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ARM: SoC driver updates for 3.18

Browse source 
These are changes for drivers that are intimately tied to some SoC
 and for some reason could not get merged through the respective
 subsystem maintainer tree.
 
 Most of the new code is for the Keystone Navigator driver, which is
 new base support that is going to be needed for their hardware
 accelerated network driver and other units.
 
 Most of the commits are for moving old code around from at91 and omap
 for things that are done in device drivers nowadays.
 
 - at91: move reset, poweroff, memory and clocksource code into drivers
   directories
 - socfpga: add edac driver (through arm-soc, as requested by Boris)
 - omap: move omap-intc code to drivers/irqchip
 - sunxi: added an RTC driver for sun6i
 - omap: mailbox driver related changes
 - keystone: support for the "Navigator" component
 - versatile: new reboot, led and soc drivers
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Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "These are changes for drivers that are intimately tied to some SoC and
  for some reason could not get merged through the respective subsystem
  maintainer tree.

  Most of the new code is for the Keystone Navigator driver, which is
  new base support that is going to be needed for their hardware
  accelerated network driver and other units.

  Most of the commits are for moving old code around from at91 and omap
  for things that are done in device drivers nowadays.

   - at91: move reset, poweroff, memory and clocksource code into
     drivers directories
   - socfpga: add edac driver (through arm-soc, as requested by Boris)
   - omap: move omap-intc code to drivers/irqchip
   - sunxi: added an RTC driver for sun6i
   - omap: mailbox driver related changes
   - keystone: support for the "Navigator" component
   - versatile: new reboot, led and soc drivers"

* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (92 commits)
  bus: arm-ccn: Fix spurious warning message
  leds: add device tree bindings for register bit LEDs
  soc: add driver for the ARM RealView
  power: reset: driver for the Versatile syscon reboot
  leds: add a driver for syscon-based LEDs
  drivers/soc: ti: fix build break with modules
  MAINTAINERS: Add Keystone Multicore Navigator drivers entry
  soc: ti: add Keystone Navigator DMA support
  Documentation: dt: soc: add Keystone Navigator DMA bindings
  soc: ti: add Keystone Navigator QMSS driver
  Documentation: dt: soc: add Keystone Navigator QMSS bindings
  rtc: sunxi: Depend on platforms sun4i/sun7i that actually have the rtc
  rtc: sun6i: Add sun6i RTC driver
  irqchip: omap-intc: remove unnecessary comments
  irqchip: omap-intc: correct maximum number or MIR registers
  irqchip: omap-intc: enable TURBO idle mode
  irqchip: omap-intc: enable IP protection
  irqchip: omap-intc: remove unnecesary of_address_to_resource() call
  irqchip: omap-intc: comment style cleanup
  irqchip: omap-intc: minor improvement to omap_irq_pending()
  ...
This commit is contained in:
Linus Torvalds 2014-10-08 17:37:16 -04:00
commit 8b45bc892e
108 changed files with 7609 additions and 1299 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
Documentation/devicetree/bindings/arm/atmel-at91.txt
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@ -98,8 +98,8 @@ RAMC SDRAM/DDR Controller required properties:
- compatible: Should be "atmel,at91rm9200-sdramc",
"atmel,at91sam9260-sdramc",
"atmel,at91sam9g45-ddramc",
"atmel,sama5d3-ddramc",
- reg: Should contain registers location and length
For at91sam9263 and at91sam9g45 you must specify 2 entries.
Examples:
@ -108,12 +108,6 @@ Examples:
reg = <0xffffe800 0x200>;
};
ramc0: ramc@ffffe400 {
compatible = "atmel,at91sam9g45-ddramc";
reg = <0xffffe400 0x200
0xffffe600 0x200>;
};
SHDWC Shutdown Controller
required properties:

99
Documentation/devicetree/bindings/leds/register-bit-led.txt Normal file
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@ -0,0 +1,99 @@
Device Tree Bindings for Register Bit LEDs
Register bit leds are used with syscon multifunctional devices
where single bits in a certain register can turn on/off a
single LED. The register bit LEDs appear as children to the
syscon device, with the proper compatible string. For the
syscon bindings see:
Documentation/devicetree/bindings/mfd/syscon.txt
Each LED is represented as a sub-node of the syscon device. Each
node's name represents the name of the corresponding LED.
LED sub-node properties:
Required properties:
- compatible : must be "register-bit-led"
- offset : register offset to the register controlling this LED
- mask : bit mask for the bit controlling this LED in the register
typically 0x01, 0x02, 0x04 ...
Optional properties:
- label : (optional)
see Documentation/devicetree/bindings/leds/common.txt
- linux,default-trigger : (optional)
see Documentation/devicetree/bindings/leds/common.txt
- default-state: (optional) The initial state of the LED. Valid
values are "on", "off", and "keep". If the LED is already on or off
and the default-state property is set the to same value, then no
glitch should be produced where the LED momentarily turns off (or
on). The "keep" setting will keep the LED at whatever its current
state is, without producing a glitch. The default is off if this
property is not present.
Example:
syscon: syscon@10000000 {
compatible = "arm,realview-pb1176-syscon", "syscon";
reg = <0x10000000 0x1000>;
led@08.0 {
compatible = "register-bit-led";
offset = <0x08>;
mask = <0x01>;
label = "versatile:0";
linux,default-trigger = "heartbeat";
default-state = "on";
};
led@08.1 {
compatible = "register-bit-led";
offset = <0x08>;
mask = <0x02>;
label = "versatile:1";
linux,default-trigger = "mmc0";
default-state = "off";
};
led@08.2 {
compatible = "register-bit-led";
offset = <0x08>;
mask = <0x04>;
label = "versatile:2";
linux,default-trigger = "cpu0";
default-state = "off";
};
led@08.3 {
compatible = "register-bit-led";
offset = <0x08>;
mask = <0x08>;
label = "versatile:3";
default-state = "off";
};
led@08.4 {
compatible = "register-bit-led";
offset = <0x08>;
mask = <0x10>;
label = "versatile:4";
default-state = "off";
};
led@08.5 {
compatible = "register-bit-led";
offset = <0x08>;
mask = <0x20>;
label = "versatile:5";
default-state = "off";
};
led@08.6 {
compatible = "register-bit-led";
offset = <0x08>;
mask = <0x40>;
label = "versatile:6";
default-state = "off";
};
led@08.7 {
compatible = "register-bit-led";
offset = <0x08>;
mask = <0x80>;
label = "versatile:7";
default-state = "off";
};
};

108
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@ -0,0 +1,108 @@
OMAP2+ Mailbox Driver
=====================
The OMAP mailbox hardware facilitates communication between different processors
using a queued mailbox interrupt mechanism. The IP block is external to the
various processor subsystems and is connected on an interconnect bus. The
communication is achieved through a set of registers for message storage and
interrupt configuration registers.
Each mailbox IP block has a certain number of h/w fifo queues and output
interrupt lines. An output interrupt line is routed to an interrupt controller
within a processor subsystem, and there can be more than one line going to a
specific processor's interrupt controller. The interrupt line connections are
fixed for an instance and are dictated by the IP integration into the SoC
(excluding the SoCs that have a Interrupt Crossbar IP). Each interrupt line is
programmable through a set of interrupt configuration registers, and have a rx
and tx interrupt source per h/w fifo. Communication between different processors
is achieved through the appropriate programming of the rx and tx interrupt
sources on the appropriate interrupt lines.
The number of h/w fifo queues and interrupt lines dictate the usable registers.
All the current OMAP SoCs except for the newest DRA7xx SoC has a single IP
instance. DRA7xx has multiple instances with different number of h/w fifo queues
and interrupt lines between different instances. The interrupt lines can also be
routed to different processor sub-systems on DRA7xx as they are routed through
the Crossbar, a kind of interrupt router/multiplexer.
Mailbox Device Node:
====================
A Mailbox device node is used to represent a Mailbox IP instance within a SoC.
The sub-mailboxes are represented as child nodes of this parent node.
Required properties:
--------------------
- compatible: Should be one of the following,
"ti,omap2-mailbox" for OMAP2420, OMAP2430 SoCs
"ti,omap3-mailbox" for OMAP3430, OMAP3630 SoCs
"ti,omap4-mailbox" for OMAP44xx, OMAP54xx, AM33xx,
AM43xx and DRA7xx SoCs
- reg: Contains the mailbox register address range (base
address and length)
- interrupts: Contains the interrupt information for the mailbox
device. The format is dependent on which interrupt
controller the OMAP device uses
- ti,hwmods: Name of the hwmod associated with the mailbox
- ti,mbox-num-users: Number of targets (processor devices) that the mailbox
device can interrupt
- ti,mbox-num-fifos: Number of h/w fifo queues within the mailbox IP block
Child Nodes:
============
A child node is used for representing the actual sub-mailbox device that is
used for the communication between the host processor and a remote processor.
Each child node should have a unique node name across all the different
mailbox device nodes.
Required properties:
--------------------
- ti,mbox-tx: sub-mailbox descriptor property defining a Tx fifo
- ti,mbox-rx: sub-mailbox descriptor property defining a Rx fifo
Sub-mailbox Descriptor Data
---------------------------
Each of the above ti,mbox-tx and ti,mbox-rx properties should have 3 cells of
data that represent the following:
Cell #1 (fifo_id) - mailbox fifo id used either for transmitting
(ti,mbox-tx) or for receiving (ti,mbox-rx)
Cell #2 (irq_id) - irq identifier index number to use from the parent's
interrupts data. Should be 0 for most of the cases, a
positive index value is seen only on mailboxes that have
multiple interrupt lines connected to the MPU processor.
Cell #3 (usr_id) - mailbox user id for identifying the interrupt line
associated with generating a tx/rx fifo interrupt.
Example:
--------
/* OMAP4 */
mailbox: mailbox@4a0f4000 {
compatible = "ti,omap4-mailbox";
reg = <0x4a0f4000 0x200>;
interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
ti,hwmods = "mailbox";
ti,mbox-num-users = <3>;
ti,mbox-num-fifos = <8>;
mbox_ipu: mbox_ipu {
ti,mbox-tx = <0 0 0>;
ti,mbox-rx = <1 0 0>;
};
mbox_dsp: mbox_dsp {
ti,mbox-tx = <3 0 0>;
ti,mbox-rx = <2 0 0>;
};
};
/* AM33xx */
mailbox: mailbox@480C8000 {
compatible = "ti,omap4-mailbox";
reg = <0x480C8000 0x200>;
interrupts = <77>;
ti,hwmods = "mailbox";
ti,mbox-num-users = <4>;
ti,mbox-num-fifos = <8>;
mbox_wkupm3: wkup_m3 {
ti,mbox-tx = <0 0 0>;
ti,mbox-rx = <0 0 3>;
};
};

17
Documentation/devicetree/bindings/rtc/sun6i-rtc.txt Normal file
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@ -0,0 +1,17 @@
* sun6i Real Time Clock
RTC controller for the Allwinner A31
Required properties:
- compatible : Should be "allwinner,sun6i-a31-rtc"
- reg : physical base address of the controller and length of
memory mapped region.
- interrupts : IRQ lines for the RTC alarm 0 and alarm 1, in that order.
Example:
rtc: rtc@01f00000 {
compatible = "allwinner,sun6i-a31-rtc";
reg = <0x01f00000 0x54>;
interrupts = <0 40 4>, <0 41 4>;
};

111
Documentation/devicetree/bindings/soc/ti/keystone-navigator-dma.txt Normal file
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@ -0,0 +1,111 @@
Keystone Navigator DMA Controller
This document explains the device tree bindings for the packet dma
on keystone devices. The Keystone Navigator DMA driver sets up the dma
channels and flows for the QMSS(Queue Manager SubSystem) who triggers
the actual data movements across clients using destination queues. Every
client modules like NETCP(Network Coprocessor), SRIO(Serial Rapid IO),
CRYPTO Engines etc has its own instance of dma hardware. QMSS has also
an internal packet DMA module which is used as an infrastructure DMA
with zero copy.
Navigator DMA cloud layout:
------------------
| Navigator DMAs |
------------------
|
|-> DMA instance #0
|
|-> DMA instance #1
.
.
|
|-> DMA instance #n
Navigator DMA properties:
Required properties:
- compatible: Should be "ti,keystone-navigator-dma"
- clocks: phandle to dma instances clocks. The clock handles can be as
many as the dma instances. The order should be maintained as per
the dma instances.
- ti,navigator-cloud-address: Should contain base address for the multi-core
navigator cloud and number of addresses depends on SOC integration
configuration.. Navigator cloud global address needs to be programmed
into DMA and the DMA uses it as the physical addresses to reach queue
managers. Note that these addresses though points to queue managers,
they are relevant only from DMA perspective. The QMSS may not choose to
use them since it has a different address space view to reach all
its components.
DMA instance properties:
Required properties:
- reg: Should contain register location and length of the following dma
register regions. Register regions should be specified in the following
order.
- Global control register region (global).
- Tx DMA channel configuration register region (txchan).
- Rx DMA channel configuration register region (rxchan).
- Tx DMA channel Scheduler configuration register region (txsched).
- Rx DMA flow configuration register region (rxflow).
Optional properties:
- reg-names: Names for the register regions.
- ti,enable-all: Enable all DMA channels vs clients opening specific channels
what they need. This property is useful for the userspace fast path
case where the linux drivers enables the channels used by userland
stack.
- ti,loop-back: To loopback Tx streaming I/F to Rx streaming I/F. Used for
infrastructure transfers.
- ti,rx-retry-timeout: Number of dma cycles to wait before retry on buffer
starvation.
Example:
knav_dmas: knav_dmas@0 {
compatible = "ti,keystone-navigator-dma";
clocks = <&papllclk>, <&clkxge>;
#address-cells = <1>;
#size-cells = <1>;
ranges;
ti,navigator-cloud-address = <0x23a80000 0x23a90000
0x23aa0000 0x23ab0000>;
dma_gbe: dma_gbe@0 {
reg = <0x2004000 0x100>,
<0x2004400 0x120>,
<0x2004800 0x300>,
<0x2004c00 0x120>,
<0x2005000 0x400>;
reg-names = "global", "txchan", "rxchan",
"txsched", "rxflow";
};
dma_xgbe: dma_xgbe@0 {
reg = <0x2fa1000 0x100>,
<0x2fa1400 0x200>,
<0x2fa1800 0x200>,
<0x2fa1c00 0x200>,
<0x2fa2000 0x400>;
reg-names = "global", "txchan", "rxchan",
"txsched", "rxflow";
};
};
Navigator DMA client:
Required properties:
- ti,navigator-dmas: List of one or more DMA specifiers, each consisting of
- A phandle pointing to DMA instance node
- A DMA channel number as a phandle arg.
- ti,navigator-dma-names: Contains dma channel name for each DMA specifier in
the 'ti,navigator-dmas' property.
Example:
netcp: netcp@2090000 {
..
ti,navigator-dmas = <&dma_gbe 22>,
<&dma_gbe 23>,
<&dma_gbe 8>;
ti,navigator-dma-names = "netrx0", "netrx1", "nettx";
..
};

232
Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt Normal file
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@ -0,0 +1,232 @@
* Texas Instruments Keystone Navigator Queue Management SubSystem driver
The QMSS (Queue Manager Sub System) found on Keystone SOCs is one of
the main hardware sub system which forms the backbone of the Keystone
multi-core Navigator. QMSS consist of queue managers, packed-data structure
processors(PDSP), linking RAM, descriptor pools and infrastructure
Packet DMA.
The Queue Manager is a hardware module that is responsible for accelerating
management of the packet queues. Packets are queued/de-queued by writing or
reading descriptor address to a particular memory mapped location. The PDSPs
perform QMSS related functions like accumulation, QoS, or event management.
Linking RAM registers are used to link the descriptors which are stored in
descriptor RAM. Descriptor RAM is configurable as internal or external memory.
The QMSS driver manages the PDSP setups, linking RAM regions,
queue pool management (allocation, push, pop and notify) and descriptor
pool management.
Required properties:
- compatible : Must be "ti,keystone-navigator-qmss";
- clocks : phandle to the reference clock for this device.
- queue-range : <start number> total range of queue numbers for the device.
- linkram0 : <address size> for internal link ram, where size is the total
link ram entries.
- linkram1 : <address size> for external link ram, where size is the total
external link ram entries. If the address is specified as "0"
driver will allocate memory.
- qmgrs : child node describing the individual queue managers on the
SoC. On keystone 1 devices there should be only one node.
On keystone 2 devices there can be more than 1 node.
-- managed-queues : the actual queues managed by each queue manager
instance, specified as <"base queue #" "# of queues">.
-- reg : Address and size of the register set for the device.
Register regions should be specified in the following
order
- Queue Peek region.
- Queue status RAM.
- Queue configuration region.
- Descriptor memory setup region.
- Queue Management/Queue Proxy region for queue Push.
- Queue Management/Queue Proxy region for queue Pop.
- queue-pools : child node classifying the queue ranges into pools.
Queue ranges are grouped into 3 type of pools:
- qpend : pool of qpend(interruptible) queues
- general-purpose : pool of general queues, primarly used
as free descriptor queues or the
transmit DMA queues.
- accumulator : pool of queues on PDSP accumulator channel
Each range can have the following properties:
-- qrange : number of queues to use per queue range, specified as
<"base queue #" "# of queues">.
-- interrupts : Optional property to specify the interrupt mapping
for interruptible queues. The driver additionaly sets
the interrupt affinity hint based on the cpu mask.
-- qalloc-by-id : Optional property to specify that the queues in this
range can only be allocated by queue id.
-- accumulator : Accumulator channel specification. Any of the PDSPs in
QMSS can be loaded with the accumulator firmware. The
accumulator firmware’s job is to poll a select number of
queues looking for descriptors that have been pushed
into them. Descriptors are popped from the queue and
placed in a buffer provided by the host. When the list
becomes full or a programmed time period expires, the
accumulator triggers an interrupt to the host to read
the buffer for descriptor information. This firmware
comes in 16, 32, and 48 channel builds. Each of these
channels can be configured to monitor 32 contiguous
queues. Accumulator channel property is specified as:
<pdsp-id, channel, entries, pacing mode, latency>
pdsp-id : QMSS PDSP running accumulator firmware
on which the channel has to be
configured
channel : Accumulator channel number
entries : Size of the accumulator descriptor list
pacing mode : Interrupt pacing mode
0 : None, i.e interrupt on list full only
1 : Time delay since last interrupt
2 : Time delay since first new packet
3 : Time delay since last new packet
latency : time to delay the interrupt, specified
in microseconds.
-- multi-queue : Optional property to specify that the channel has to
monitor upto 32 queues starting at the base queue #.
- descriptor-regions : child node describing the memory regions for keystone
navigator packet DMA descriptors. The memory for
descriptors will be allocated by the driver.
-- id : region number in QMSS.
-- region-spec : specifies the number of descriptors in the
region, specified as
<"# of descriptors" "descriptor size">.
-- link-index : start index, i.e. index of the first
descriptor in the region.
Optional properties:
- dma-coherent : Present if DMA operations are coherent.
- pdsps : child node describing the PDSP configuration.
-- firmware : firmware to be loaded on the PDSP.
-- id : the qmss pdsp that will run the firmware.
-- reg : Address and size of the register set for the PDSP.
Register regions should be specified in the following
order
- PDSP internal RAM region.
- PDSP control/status region registers.
- QMSS interrupt distributor registers.
- PDSP command interface region.
Example:
qmss: qmss@2a40000 {
compatible = "ti,keystone-qmss";
dma-coherent;
#address-cells = <1>;
#size-cells = <1>;
clocks = <&chipclk13>;
ranges;
queue-range = <0 0x4000>;
linkram0 = <0x100000 0x8000>;
linkram1 = <0x0 0x10000>;
qmgrs {
#address-cells = <1>;
#size-cells = <1>;
ranges;
qmgr0 {
managed-queues = <0 0x2000>;
reg = <0x2a40000 0x20000>,
<0x2a06000 0x400>,
<0x2a02000 0x1000>,
<0x2a03000 0x1000>,
<0x23a80000 0x20000>,
<0x2a80000 0x20000>;
};
qmgr1 {
managed-queues = <0x2000 0x2000>;
reg = <0x2a60000 0x20000>,
<0x2a06400 0x400>,
<0x2a04000 0x1000>,
<0x2a05000 0x1000>,
<0x23aa0000 0x20000>,
<0x2aa0000 0x20000>;
};
};
queue-pools {
qpend {
qpend-0 {
qrange = <658 8>;
interrupts =<0 40 0xf04 0 41 0xf04 0 42 0xf04
0 43 0xf04 0 44 0xf04 0 45 0xf04
0 46 0xf04 0 47 0xf04>;
};
qpend-1 {
qrange = <8704 16>;
interrupts = <0 48 0xf04 0 49 0xf04 0 50 0xf04
0 51 0xf04 0 52 0xf04 0 53 0xf04
0 54 0xf04 0 55 0xf04 0 56 0xf04
0 57 0xf04 0 58 0xf04 0 59 0xf04
0 60 0xf04 0 61 0xf04 0 62 0xf04
0 63 0xf04>;
qalloc-by-id;
};
qpend-2 {
qrange = <8720 16>;
interrupts = <0 64 0xf04 0 65 0xf04 0 66 0xf04
0 59 0xf04 0 68 0xf04 0 69 0xf04
0 70 0xf04 0 71 0xf04 0 72 0xf04
0 73 0xf04 0 74 0xf04 0 75 0xf04
0 76 0xf04 0 77 0xf04 0 78 0xf04
0 79 0xf04>;
};
};
general-purpose {
gp-0 {
qrange = <4000 64>;
};
netcp-tx {
qrange = <640 9>;
qalloc-by-id;
};
};
accumulator {
acc-0 {
qrange = <128 32>;
accumulator = <0 36 16 2 50>;
interrupts = <0 215 0xf01>;
multi-queue;
qalloc-by-id;
};
acc-1 {
qrange = <160 32>;
accumulator = <0 37 16 2 50>;
interrupts = <0 216 0xf01>;
multi-queue;
};
acc-2 {
qrange = <192 32>;
accumulator = <0 38 16 2 50>;
interrupts = <0 217 0xf01>;
multi-queue;
};
acc-3 {
qrange = <224 32>;
accumulator = <0 39 16 2 50>;
interrupts = <0 218 0xf01>;
multi-queue;
};
};
};
descriptor-regions {
#address-cells = <1>;
#size-cells = <1>;
ranges;
region-12 {
id = <12>;
region-spec = <8192 128>; /* num_desc desc_size */
link-index = <0x4000>;
};
};
pdsps {
#address-cells = <1>;
#size-cells = <1>;
ranges;
pdsp0@0x2a10000 {
firmware = "keystone/qmss_pdsp_acc48_k2_le_1_0_0_8.fw";
reg = <0x2a10000 0x1000>,
<0x2a0f000 0x100>,
<0x2a0c000 0x3c8>,
<0x2a20000 0x4000>;
id = <0>;
};
};
}; /* qmss */

14
MAINTAINERS
View file

@ -1404,6 +1404,11 @@ M: Dinh Nguyen <dinguyen@opensource.altera.com>
S: Maintained
F: drivers/clk/socfpga/
ARM/SOCFPGA EDAC SUPPORT
M: Thor Thayer <tthayer@opensource.altera.com>
S: Maintained
F: drivers/edac/altera_edac.
ARM/STI ARCHITECTURE
M: Srinivas Kandagatla <srinivas.kandagatla@gmail.com>
M: Maxime Coquelin <maxime.coquelin@st.com>
@ -9194,6 +9199,15 @@ F: drivers/misc/tifm*
F: drivers/mmc/host/tifm_sd.c
F: include/linux/tifm.h
TI KEYSTONE MULTICORE NAVIGATOR DRIVERS
M: Santosh Shilimkar <santosh.shilimkar@ti.com>
L: linux-kernel@vger.kernel.org
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: drivers/soc/ti/*
T: git git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone.git
TI LM49xxx FAMILY ASoC CODEC DRIVERS
M: M R Swami Reddy <mr.swami.reddy@ti.com>
M: Vishwas A Deshpande <vishwas.a.deshpande@ti.com>

3
arch/arm/boot/dts/am33xx.dtsi
View file

@ -133,10 +133,9 @@
};
intc: interrupt-controller@48200000 {
compatible = "ti,omap2-intc";
compatible = "ti,am33xx-intc";
interrupt-controller;
#interrupt-cells = <1>;
ti,intc-size = <128>;
reg = <0x48200000 0x1000>;
};

1
arch/arm/boot/dts/omap2.dtsi
View file

@ -75,7 +75,6 @@
compatible = "ti,omap2-intc";
interrupt-controller;
#interrupt-cells = <1>;
ti,intc-size = <96>;
reg = <0x480FE000 0x1000>;
};

7
arch/arm/boot/dts/omap2420-n810.dts
View file

@ -6,3 +6,10 @@
model = "Nokia N810";
compatible = "nokia,n810", "nokia,n8x0", "ti,omap2420", "ti,omap2";
};
&i2c2 {
aic3x@18 {
compatible = "tlv320aic3x";
reg = <0x18>;
};
};

6
arch/arm/boot/dts/omap2420-n8x0-common.dtsi
View file

@ -27,6 +27,12 @@
&i2c1 {
clock-frequency = <400000>;
pmic@72 {
compatible = "menelaus";
reg = <0x72>;
interrupts = <7 IRQ_TYPE_EDGE_RISING>;
};
};
&i2c2 {

3
arch/arm/boot/dts/omap3.dtsi
View file

@ -141,10 +141,9 @@
};
intc: interrupt-controller@48200000 {
compatible = "ti,omap2-intc";
compatible = "ti,omap3-intc";
interrupt-controller;
#interrupt-cells = <1>;
ti,intc-size = <96>;
reg = <0x48200000 0x1000>;
};

17
arch/arm/mach-at91/Kconfig
View file

@ -36,17 +36,6 @@ config OLD_IRQ_AT91
select MULTI_IRQ_HANDLER
select SPARSE_IRQ
config AT91_SAM9_ALT_RESET
bool
default !ARCH_AT91X40
config AT91_SAM9G45_RESET
bool
default !ARCH_AT91X40
config AT91_SAM9_TIME
bool
config HAVE_AT91_SMD
bool
@ -55,18 +44,20 @@ config HAVE_AT91_H32MX
config SOC_AT91SAM9
bool
select AT91_SAM9_TIME
select ATMEL_AIC_IRQ if !OLD_IRQ_AT91
select CPU_ARM926T
select GENERIC_CLOCKEVENTS
select MEMORY if USE_OF
select ATMEL_SDRAMC if USE_OF
config SOC_SAMA5
bool
select AT91_SAM9_TIME
select ATMEL_AIC5_IRQ
select CPU_V7
select GENERIC_CLOCKEVENTS
select USE_OF
select MEMORY
select ATMEL_SDRAMC
menu "Atmel AT91 System-on-Chip"

3
arch/arm/mach-at91/Makefile
View file

@ -9,9 +9,6 @@ obj- :=
obj-$(CONFIG_OLD_IRQ_AT91) += irq.o
obj-$(CONFIG_OLD_CLK_AT91) += clock.o
obj-$(CONFIG_AT91_SAM9_ALT_RESET) += at91sam9_alt_reset.o
obj-$(CONFIG_AT91_SAM9G45_RESET) += at91sam9g45_reset.o
obj-$(CONFIG_AT91_SAM9_TIME) += at91sam926x_time.o
obj-$(CONFIG_SOC_AT91SAM9) += sam9_smc.o
# CPU-specific support

53
arch/arm/mach-at91/at91_rstc.h
View file

@ -1,53 +0,0 @@
/*
* arch/arm/mach-at91/include/mach/at91_rstc.h
*
* Copyright (C) 2007 Andrew Victor
* Copyright (C) 2007 Atmel Corporation.
*
* Reset Controller (RSTC) - System peripherals regsters.
* Based on AT91SAM9261 datasheet revision D.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef AT91_RSTC_H
#define AT91_RSTC_H
#ifndef __ASSEMBLY__
extern void __iomem *at91_rstc_base;
#define at91_rstc_read(field) \
__raw_readl(at91_rstc_base + field)
#define at91_rstc_write(field, value) \
__raw_writel(value, at91_rstc_base + field)
#else
.extern at91_rstc_base
#endif
#define AT91_RSTC_CR 0x00 /* Reset Controller Control Register */
#define AT91_RSTC_PROCRST (1 << 0) /* Processor Reset */
#define AT91_RSTC_PERRST (1 << 2) /* Peripheral Reset */
#define AT91_RSTC_EXTRST (1 << 3) /* External Reset */
#define AT91_RSTC_KEY (0xa5 << 24) /* KEY Password */
#define AT91_RSTC_SR 0x04 /* Reset Controller Status Register */
#define AT91_RSTC_URSTS (1 << 0) /* User Reset Status */
#define AT91_RSTC_RSTTYP (7 << 8) /* Reset Type */
#define AT91_RSTC_RSTTYP_GENERAL (0 << 8)
#define AT91_RSTC_RSTTYP_WAKEUP (1 << 8)
#define AT91_RSTC_RSTTYP_WATCHDOG (2 << 8)
#define AT91_RSTC_RSTTYP_SOFTWARE (3 << 8)
#define AT91_RSTC_RSTTYP_USER (4 << 8)
#define AT91_RSTC_NRSTL (1 << 16) /* NRST Pin Level */
#define AT91_RSTC_SRCMP (1 << 17) /* Software Reset Command in Progress */
#define AT91_RSTC_MR 0x08 /* Reset Controller Mode Register */
#define AT91_RSTC_URSTEN (1 << 0) /* User Reset Enable */
#define AT91_RSTC_URSTIEN (1 << 4) /* User Reset Interrupt Enable */
#define AT91_RSTC_ERSTL (0xf << 8) /* External Reset Length */
#endif

50
arch/arm/mach-at91/at91_shdwc.h
View file

@ -1,50 +0,0 @@
/*
* arch/arm/mach-at91/include/mach/at91_shdwc.h
*
* Copyright (C) 2007 Andrew Victor
* Copyright (C) 2007 Atmel Corporation.
*
* Shutdown Controller (SHDWC) - System peripherals regsters.
* Based on AT91SAM9261 datasheet revision D.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef AT91_SHDWC_H
#define AT91_SHDWC_H
#ifndef __ASSEMBLY__
extern void __iomem *at91_shdwc_base;
#define at91_shdwc_read(field) \
__raw_readl(at91_shdwc_base + field)
#define at91_shdwc_write(field, value) \
__raw_writel(value, at91_shdwc_base + field)
#endif
#define AT91_SHDW_CR 0x00 /* Shut Down Control Register */
#define AT91_SHDW_SHDW (1 << 0) /* Shut Down command */
#define AT91_SHDW_KEY (0xa5 << 24) /* KEY Password */
#define AT91_SHDW_MR 0x04 /* Shut Down Mode Register */
#define AT91_SHDW_WKMODE0 (3 << 0) /* Wake-up 0 Mode Selection */
#define AT91_SHDW_WKMODE0_NONE 0
#define AT91_SHDW_WKMODE0_HIGH 1
#define AT91_SHDW_WKMODE0_LOW 2
#define AT91_SHDW_WKMODE0_ANYLEVEL 3
#define AT91_SHDW_CPTWK0_MAX 0xf /* Maximum Counter On Wake Up 0 */
#define AT91_SHDW_CPTWK0 (AT91_SHDW_CPTWK0_MAX << 4) /* Counter On Wake Up 0 */
#define AT91_SHDW_CPTWK0_(x) ((x) << 4)
#define AT91_SHDW_RTTWKEN (1 << 16) /* Real Time Timer Wake-up Enable */
#define AT91_SHDW_RTCWKEN (1 << 17) /* Real Time Clock Wake-up Enable */
#define AT91_SHDW_SR 0x08 /* Shut Down Status Register */
#define AT91_SHDW_WAKEUP0 (1 << 0) /* Wake-up 0 Status */
#define AT91_SHDW_RTTWK (1 << 16) /* Real-time Timer Wake-up */
#define AT91_SHDW_RTCWK (1 << 17) /* Real-time Clock Wake-up [SAM9RL] */
#endif

51
arch/arm/mach-at91/at91sam9260.c
View file

@ -11,6 +11,7 @@
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/clk/at91_pmc.h>
#include <asm/proc-fns.h>
@ -24,7 +25,6 @@
#include <mach/hardware.h>
#include "at91_aic.h"
#include "at91_rstc.h"
#include "soc.h"
#include "generic.h"
#include "sam9_smc.h"
@ -342,8 +342,6 @@ static void __init at91sam9260_map_io(void)
static void __init at91sam9260_ioremap_registers(void)
{
at91_ioremap_shdwc(AT91SAM9260_BASE_SHDWC);
at91_ioremap_rstc(AT91SAM9260_BASE_RSTC);
at91_ioremap_ramc(0, AT91SAM9260_BASE_SDRAMC, 512);
at91sam926x_ioremap_pit(AT91SAM9260_BASE_PIT);
at91sam9_ioremap_smc(0, AT91SAM9260_BASE_SMC);
@ -354,7 +352,6 @@ static void __init at91sam9260_ioremap_registers(void)
static void __init at91sam9260_initialize(void)
{
arm_pm_idle = at91sam9_idle;
arm_pm_restart = at91sam9_alt_restart;
at91_sysirq_mask_rtt(AT91SAM9260_BASE_RTT);
@ -362,6 +359,45 @@ static void __init at91sam9260_initialize(void)
at91_gpio_init(at91sam9260_gpio, 3);
}
static struct resource rstc_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_RSTC,
.end = AT91SAM9260_BASE_RSTC + SZ_16 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9260_BASE_SDRAMC,
.end = AT91SAM9260_BASE_SDRAMC + SZ_512 - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device rstc_device = {
.name = "at91-sam9260-reset",
.resource = rstc_resources,
.num_resources = ARRAY_SIZE(rstc_resources),
};
static struct resource shdwc_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_SHDWC,
.end = AT91SAM9260_BASE_SHDWC + SZ_16 - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device shdwc_device = {
.name = "at91-poweroff",
.resource = shdwc_resources,
.num_resources = ARRAY_SIZE(shdwc_resources),
};
static void __init at91sam9260_register_devices(void)
{
platform_device_register(&rstc_device);
platform_device_register(&shdwc_device);
}
/* --------------------------------------------------------------------
* Interrupt initialization
* -------------------------------------------------------------------- */
@ -404,6 +440,11 @@ static unsigned int at91sam9260_default_irq_priority[NR_AIC_IRQS] __initdata = {
0, /* Advanced Interrupt Controller */
};
static void __init at91sam9260_init_time(void)
{
at91sam926x_pit_init(NR_IRQS_LEGACY + AT91_ID_SYS);
}
AT91_SOC_START(at91sam9260)
.map_io = at91sam9260_map_io,
.default_irq_priority = at91sam9260_default_irq_priority,
@ -411,5 +452,7 @@ AT91_SOC_START(at91sam9260)
| (1 << AT91SAM9260_ID_IRQ2),
.ioremap_registers = at91sam9260_ioremap_registers,
.register_clocks = at91sam9260_register_clocks,
.register_devices = at91sam9260_register_devices,
.init = at91sam9260_initialize,
.init_time = at91sam9260_init_time,
AT91_SOC_END

51
arch/arm/mach-at91/at91sam9261.c
View file

@ -11,6 +11,7 @@
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/clk/at91_pmc.h>
#include <asm/proc-fns.h>
@ -23,7 +24,6 @@
#include <mach/hardware.h>
#include "at91_aic.h"
#include "at91_rstc.h"
#include "soc.h"
#include "generic.h"
#include "sam9_smc.h"
@ -301,8 +301,6 @@ static void __init at91sam9261_map_io(void)
static void __init at91sam9261_ioremap_registers(void)
{
at91_ioremap_shdwc(AT91SAM9261_BASE_SHDWC);
at91_ioremap_rstc(AT91SAM9261_BASE_RSTC);
at91_ioremap_ramc(0, AT91SAM9261_BASE_SDRAMC, 512);
at91sam926x_ioremap_pit(AT91SAM9261_BASE_PIT);
at91sam9_ioremap_smc(0, AT91SAM9261_BASE_SMC);
@ -313,7 +311,6 @@ static void __init at91sam9261_ioremap_registers(void)
static void __init at91sam9261_initialize(void)
{
arm_pm_idle = at91sam9_idle;
arm_pm_restart = at91sam9_alt_restart;
at91_sysirq_mask_rtt(AT91SAM9261_BASE_RTT);
@ -321,6 +318,45 @@ static void __init at91sam9261_initialize(void)
at91_gpio_init(at91sam9261_gpio, 3);
}
static struct resource rstc_resources[] = {
[0] = {
.start = AT91SAM9261_BASE_RSTC,
.end = AT91SAM9261_BASE_RSTC + SZ_16 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9261_BASE_SDRAMC,
.end = AT91SAM9261_BASE_SDRAMC + SZ_512 - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device rstc_device = {
.name = "at91-sam9260-reset",
.resource = rstc_resources,
.num_resources = ARRAY_SIZE(rstc_resources),
};
static struct resource shdwc_resources[] = {
[0] = {
.start = AT91SAM9261_BASE_SHDWC,
.end = AT91SAM9261_BASE_SHDWC + SZ_16 - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device shdwc_device = {
.name = "at91-poweroff",
.resource = shdwc_resources,
.num_resources = ARRAY_SIZE(shdwc_resources),
};
static void __init at91sam9261_register_devices(void)
{
platform_device_register(&rstc_device);
platform_device_register(&shdwc_device);
}
/* --------------------------------------------------------------------
* Interrupt initialization
* -------------------------------------------------------------------- */
@ -363,6 +399,11 @@ static unsigned int at91sam9261_default_irq_priority[NR_AIC_IRQS] __initdata = {
0, /* Advanced Interrupt Controller */
};
static void __init at91sam9261_init_time(void)
{
at91sam926x_pit_init(NR_IRQS_LEGACY + AT91_ID_SYS);
}
AT91_SOC_START(at91sam9261)
.map_io = at91sam9261_map_io,
.default_irq_priority = at91sam9261_default_irq_priority,
@ -370,5 +411,7 @@ AT91_SOC_START(at91sam9261)
| (1 << AT91SAM9261_ID_IRQ2),
.ioremap_registers = at91sam9261_ioremap_registers,
.register_clocks = at91sam9261_register_clocks,
.register_devices = at91sam9261_register_devices,
.init = at91sam9261_initialize,
.init_time = at91sam9261_init_time,
AT91_SOC_END

51
arch/arm/mach-at91/at91sam9263.c
View file

@ -11,6 +11,7 @@
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/clk/at91_pmc.h>
#include <asm/proc-fns.h>
@ -22,7 +23,6 @@
#include <mach/hardware.h>
#include "at91_aic.h"
#include "at91_rstc.h"
#include "soc.h"
#include "generic.h"
#include "sam9_smc.h"
@ -321,8 +321,6 @@ static void __init at91sam9263_map_io(void)
static void __init at91sam9263_ioremap_registers(void)
{
at91_ioremap_shdwc(AT91SAM9263_BASE_SHDWC);
at91_ioremap_rstc(AT91SAM9263_BASE_RSTC);
at91_ioremap_ramc(0, AT91SAM9263_BASE_SDRAMC0, 512);
at91_ioremap_ramc(1, AT91SAM9263_BASE_SDRAMC1, 512);
at91sam926x_ioremap_pit(AT91SAM9263_BASE_PIT);
@ -335,7 +333,6 @@ static void __init at91sam9263_ioremap_registers(void)
static void __init at91sam9263_initialize(void)
{
arm_pm_idle = at91sam9_idle;
arm_pm_restart = at91sam9_alt_restart;
at91_sysirq_mask_rtt(AT91SAM9263_BASE_RTT0);
at91_sysirq_mask_rtt(AT91SAM9263_BASE_RTT1);
@ -344,6 +341,45 @@ static void __init at91sam9263_initialize(void)
at91_gpio_init(at91sam9263_gpio, 5);
}
static struct resource rstc_resources[] = {
[0] = {
.start = AT91SAM9263_BASE_RSTC,
.end = AT91SAM9263_BASE_RSTC + SZ_16 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9263_BASE_SDRAMC0,
.end = AT91SAM9263_BASE_SDRAMC0 + SZ_512 - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device rstc_device = {
.name = "at91-sam9260-reset",
.resource = rstc_resources,
.num_resources = ARRAY_SIZE(rstc_resources),
};
static struct resource shdwc_resources[] = {
[0] = {
.start = AT91SAM9263_BASE_SHDWC,
.end = AT91SAM9263_BASE_SHDWC + SZ_16 - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device shdwc_device = {
.name = "at91-poweroff",
.resource = shdwc_resources,
.num_resources = ARRAY_SIZE(shdwc_resources),
};
static void __init at91sam9263_register_devices(void)
{
platform_device_register(&rstc_device);
platform_device_register(&shdwc_device);
}
/* --------------------------------------------------------------------
* Interrupt initialization
* -------------------------------------------------------------------- */
@ -386,11 +422,18 @@ static unsigned int at91sam9263_default_irq_priority[NR_AIC_IRQS] __initdata = {
0, /* Advanced Interrupt Controller (IRQ1) */
};
static void __init at91sam9263_init_time(void)
{
at91sam926x_pit_init(NR_IRQS_LEGACY + AT91_ID_SYS);
}
AT91_SOC_START(at91sam9263)
.map_io = at91sam9263_map_io,
.default_irq_priority = at91sam9263_default_irq_priority,
.extern_irq = (1 << AT91SAM9263_ID_IRQ0) | (1 << AT91SAM9263_ID_IRQ1),
.ioremap_registers = at91sam9263_ioremap_registers,
.register_clocks = at91sam9263_register_clocks,
.register_devices = at91sam9263_register_devices,
.init = at91sam9263_initialize,
.init_time = at91sam9263_init_time,
AT91_SOC_END

294
arch/arm/mach-at91/at91sam926x_time.c
View file

@ -1,294 +0,0 @@
/*
* at91sam926x_time.c - Periodic Interval Timer (PIT) for at91sam926x
*
* Copyright (C) 2005-2006 M. Amine SAYA, ATMEL Rousset, France
* Revision 2005 M. Nicolas Diremdjian, ATMEL Rousset, France
* Converted to ClockSource/ClockEvents by David Brownell.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/clk.h>
#include <linux/clockchips.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <asm/mach/time.h>
#include <mach/hardware.h>
#define AT91_PIT_MR 0x00 /* Mode Register */
#define AT91_PIT_PITIEN (1 << 25) /* Timer Interrupt Enable */
#define AT91_PIT_PITEN (1 << 24) /* Timer Enabled */
#define AT91_PIT_PIV (0xfffff) /* Periodic Interval Value */
#define AT91_PIT_SR 0x04 /* Status Register */
#define AT91_PIT_PITS (1 << 0) /* Timer Status */
#define AT91_PIT_PIVR 0x08 /* Periodic Interval Value Register */
#define AT91_PIT_PIIR 0x0c /* Periodic Interval Image Register */
#define AT91_PIT_PICNT (0xfff << 20) /* Interval Counter */
#define AT91_PIT_CPIV (0xfffff) /* Inverval Value */
#define PIT_CPIV(x) ((x) & AT91_PIT_CPIV)
#define PIT_PICNT(x) (((x) & AT91_PIT_PICNT) >> 20)
static u32 pit_cycle; /* write-once */
static u32 pit_cnt; /* access only w/system irq blocked */
static void __iomem *pit_base_addr __read_mostly;
static struct clk *mck;
static inline unsigned int pit_read(unsigned int reg_offset)
{
return __raw_readl(pit_base_addr + reg_offset);
}
static inline void pit_write(unsigned int reg_offset, unsigned long value)
{
__raw_writel(value, pit_base_addr + reg_offset);
}
/*
* Clocksource: just a monotonic counter of MCK/16 cycles.
* We don't care whether or not PIT irqs are enabled.
*/
static cycle_t read_pit_clk(struct clocksource *cs)
{
unsigned long flags;
u32 elapsed;
u32 t;
raw_local_irq_save(flags);
elapsed = pit_cnt;
t = pit_read(AT91_PIT_PIIR);
raw_local_irq_restore(flags);
elapsed += PIT_PICNT(t) * pit_cycle;
elapsed += PIT_CPIV(t);
return elapsed;
}
static struct clocksource pit_clk = {
.name = "pit",
.rating = 175,
.read = read_pit_clk,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
/*
* Clockevent device: interrupts every 1/HZ (== pit_cycles * MCK/16)
*/
static void
pit_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev)
{
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
/* update clocksource counter */
pit_cnt += pit_cycle * PIT_PICNT(pit_read(AT91_PIT_PIVR));
pit_write(AT91_PIT_MR, (pit_cycle - 1) | AT91_PIT_PITEN
| AT91_PIT_PITIEN);
break;
case CLOCK_EVT_MODE_ONESHOT:
BUG();
/* FALLTHROUGH */
case CLOCK_EVT_MODE_SHUTDOWN:
case CLOCK_EVT_MODE_UNUSED:
/* disable irq, leaving the clocksource active */
pit_write(AT91_PIT_MR, (pit_cycle - 1) | AT91_PIT_PITEN);
break;
case CLOCK_EVT_MODE_RESUME:
break;
}
}
static void at91sam926x_pit_suspend(struct clock_event_device *cedev)
{
/* Disable timer */
pit_write(AT91_PIT_MR, 0);
}
static void at91sam926x_pit_reset(void)
{
/* Disable timer and irqs */
pit_write(AT91_PIT_MR, 0);
/* Clear any pending interrupts, wait for PIT to stop counting */
while (PIT_CPIV(pit_read(AT91_PIT_PIVR)) != 0)
cpu_relax();
/* Start PIT but don't enable IRQ */
pit_write(AT91_PIT_MR, (pit_cycle - 1) | AT91_PIT_PITEN);
}
static void at91sam926x_pit_resume(struct clock_event_device *cedev)
{
at91sam926x_pit_reset();
}
static struct clock_event_device pit_clkevt = {
.name = "pit",
.features = CLOCK_EVT_FEAT_PERIODIC,
.shift = 32,
.rating = 100,
.set_mode = pit_clkevt_mode,
.suspend = at91sam926x_pit_suspend,
.resume = at91sam926x_pit_resume,
};
/*
* IRQ handler for the timer.
*/
static irqreturn_t at91sam926x_pit_interrupt(int irq, void *dev_id)
{
/*
* irqs should be disabled here, but as the irq is shared they are only
* guaranteed to be off if the timer irq is registered first.
*/
WARN_ON_ONCE(!irqs_disabled());
/* The PIT interrupt may be disabled, and is shared */
if ((pit_clkevt.mode == CLOCK_EVT_MODE_PERIODIC)
&& (pit_read(AT91_PIT_SR) & AT91_PIT_PITS)) {
unsigned nr_ticks;
/* Get number of ticks performed before irq, and ack it */
nr_ticks = PIT_PICNT(pit_read(AT91_PIT_PIVR));
do {
pit_cnt += pit_cycle;
pit_clkevt.event_handler(&pit_clkevt);
nr_ticks--;
} while (nr_ticks);
return IRQ_HANDLED;
}
return IRQ_NONE;
}
static struct irqaction at91sam926x_pit_irq = {
.name = "at91_tick",
.flags = IRQF_SHARED | IRQF_TIMER | IRQF_IRQPOLL,
.handler = at91sam926x_pit_interrupt,
.irq = NR_IRQS_LEGACY + AT91_ID_SYS,
};
#ifdef CONFIG_OF
static struct of_device_id pit_timer_ids[] = {
{ .compatible = "atmel,at91sam9260-pit" },
{ /* sentinel */ }
};
static int __init of_at91sam926x_pit_init(void)
{
struct device_node *np;
int ret;
np = of_find_matching_node(NULL, pit_timer_ids);
if (!np)
goto err;
pit_base_addr = of_iomap(np, 0);
if (!pit_base_addr)
goto node_err;
mck = of_clk_get(np, 0);
/* Get the interrupts property */
ret = irq_of_parse_and_map(np, 0);
if (!ret) {
pr_crit("AT91: PIT: Unable to get IRQ from DT\n");
if (!IS_ERR(mck))
clk_put(mck);
goto ioremap_err;
}
at91sam926x_pit_irq.irq = ret;
of_node_put(np);
return 0;
ioremap_err:
iounmap(pit_base_addr);
node_err:
of_node_put(np);
err:
return -EINVAL;
}
#else
static int __init of_at91sam926x_pit_init(void)
{
return -EINVAL;
}
#endif
/*
* Set up both clocksource and clockevent support.
*/
void __init at91sam926x_pit_init(void)
{
unsigned long pit_rate;
unsigned bits;
int ret;
mck = ERR_PTR(-ENOENT);
/* For device tree enabled device: initialize here */
of_at91sam926x_pit_init();
/*
* Use our actual MCK to figure out how many MCK/16 ticks per
* 1/HZ period (instead of a compile-time constant LATCH).
*/
if (IS_ERR(mck))
mck = clk_get(NULL, "mck");
if (IS_ERR(mck))
panic("AT91: PIT: Unable to get mck clk\n");
pit_rate = clk_get_rate(mck) / 16;
pit_cycle = (pit_rate + HZ/2) / HZ;
WARN_ON(((pit_cycle - 1) & ~AT91_PIT_PIV) != 0);
/* Initialize and enable the timer */
at91sam926x_pit_reset();
/*
* Register clocksource. The high order bits of PIV are unused,
* so this isn't a 32-bit counter unless we get clockevent irqs.
*/
bits = 12 /* PICNT */ + ilog2(pit_cycle) /* PIV */;
pit_clk.mask = CLOCKSOURCE_MASK(bits);
clocksource_register_hz(&pit_clk, pit_rate);
/* Set up irq handler */
ret = setup_irq(at91sam926x_pit_irq.irq, &at91sam926x_pit_irq);
if (ret)
pr_crit("AT91: PIT: Unable to setup IRQ\n");
/* Set up and register clockevents */
pit_clkevt.mult = div_sc(pit_rate, NSEC_PER_SEC, pit_clkevt.shift);
pit_clkevt.cpumask = cpumask_of(0);
clockevents_register_device(&pit_clkevt);
}
void __init at91sam926x_ioremap_pit(u32 addr)
{
#if defined(CONFIG_OF)
struct device_node *np =
of_find_matching_node(NULL, pit_timer_ids);
if (np) {
of_node_put(np);
return;
}
#endif
pit_base_addr = ioremap(addr, 16);
if (!pit_base_addr)
panic("Impossible to ioremap PIT\n");
}

40
arch/arm/mach-at91/at91sam9_alt_reset.S
View file

@ -1,40 +0,0 @@
/*
* reset AT91SAM9G20 as per errata
*
* (C) BitBox Ltd 2010
*
* unless the SDRAM is cleanly shutdown before we hit the
* reset register it can be left driving the data bus and
* killing the chance of a subsequent boot from NAND
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/linkage.h>
#include <mach/hardware.h>
#include <mach/at91_ramc.h>
#include "at91_rstc.h"
.arm
.globl at91sam9_alt_restart
at91sam9_alt_restart: ldr r0, =at91_ramc_base @ preload constants
ldr r0, [r0]
ldr r4, =at91_rstc_base
ldr r1, [r4]
mov r2, #1
mov r3, #AT91_SDRAMC_LPCB_POWER_DOWN
ldr r4, =AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST
.balign 32 @ align to cache line
str r2, [r0, #AT91_SDRAMC_TR] @ disable SDRAM access
str r3, [r0, #AT91_SDRAMC_LPR] @ power down SDRAM
str r4, [r1, #AT91_RSTC_CR] @ reset processor
b .

55
arch/arm/mach-at91/at91sam9g45.c
View file

@ -13,6 +13,7 @@
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <linux/clk/at91_pmc.h>
#include <linux/platform_device.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
@ -371,8 +372,6 @@ static void __init at91sam9g45_map_io(void)
static void __init at91sam9g45_ioremap_registers(void)
{
at91_ioremap_shdwc(AT91SAM9G45_BASE_SHDWC);
at91_ioremap_rstc(AT91SAM9G45_BASE_RSTC);
at91_ioremap_ramc(0, AT91SAM9G45_BASE_DDRSDRC1, 512);
at91_ioremap_ramc(1, AT91SAM9G45_BASE_DDRSDRC0, 512);
at91sam926x_ioremap_pit(AT91SAM9G45_BASE_PIT);
@ -384,7 +383,6 @@ static void __init at91sam9g45_ioremap_registers(void)
static void __init at91sam9g45_initialize(void)
{
arm_pm_idle = at91sam9_idle;
arm_pm_restart = at91sam9g45_restart;
at91_sysirq_mask_rtc(AT91SAM9G45_BASE_RTC);
at91_sysirq_mask_rtt(AT91SAM9G45_BASE_RTT);
@ -393,6 +391,50 @@ static void __init at91sam9g45_initialize(void)
at91_gpio_init(at91sam9g45_gpio, 5);
}
static struct resource rstc_resources[] = {
[0] = {
.start = AT91SAM9G45_BASE_RSTC,
.end = AT91SAM9G45_BASE_RSTC + SZ_16 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9G45_BASE_DDRSDRC1,
.end = AT91SAM9G45_BASE_DDRSDRC1 + SZ_512 - 1,
.flags = IORESOURCE_MEM,
},
[2] = {
.start = AT91SAM9G45_BASE_DDRSDRC0,
.end = AT91SAM9G45_BASE_DDRSDRC0 + SZ_512 - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device rstc_device = {
.name = "at91-sam9g45-reset",
.resource = rstc_resources,
.num_resources = ARRAY_SIZE(rstc_resources),
};
static struct resource shdwc_resources[] = {
[0] = {
.start = AT91SAM9G45_BASE_SHDWC,
.end = AT91SAM9G45_BASE_SHDWC + SZ_16 - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device shdwc_device = {
.name = "at91-poweroff",
.resource = shdwc_resources,
.num_resources = ARRAY_SIZE(shdwc_resources),
};
static void __init at91sam9g45_register_devices(void)
{
platform_device_register(&rstc_device);
platform_device_register(&shdwc_device);
}
/* --------------------------------------------------------------------
* Interrupt initialization
* -------------------------------------------------------------------- */
@ -435,11 +477,18 @@ static unsigned int at91sam9g45_default_irq_priority[NR_AIC_IRQS] __initdata = {
0, /* Advanced Interrupt Controller (IRQ0) */
};
static void __init at91sam9g45_init_time(void)
{
at91sam926x_pit_init(NR_IRQS_LEGACY + AT91_ID_SYS);
}
AT91_SOC_START(at91sam9g45)
.map_io = at91sam9g45_map_io,
.default_irq_priority = at91sam9g45_default_irq_priority,
.extern_irq = (1 << AT91SAM9G45_ID_IRQ0),
.ioremap_registers = at91sam9g45_ioremap_registers,
.register_clocks = at91sam9g45_register_clocks,
.register_devices = at91sam9g45_register_devices,
.init = at91sam9g45_initialize,
.init_time = at91sam9g45_init_time,
AT91_SOC_END

45
arch/arm/mach-at91/at91sam9g45_reset.S
View file

@ -1,45 +0,0 @@
/*
* reset AT91SAM9G45 as per errata
*
* Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcosoft.com>
*
* unless the SDRAM is cleanly shutdown before we hit the
* reset register it can be left driving the data bus and
* killing the chance of a subsequent boot from NAND
*
* GPLv2 Only
*/
#include <linux/linkage.h>
#include <mach/hardware.h>
#include <mach/at91_ramc.h>
#include "at91_rstc.h"
.arm
/*
* at91_ramc_base is an array void*
* init at NULL if only one DDR controler is present in or DT
*/
.globl at91sam9g45_restart
at91sam9g45_restart:
ldr r5, =at91_ramc_base @ preload constants
ldr r0, [r5]
ldr r5, [r5, #4] @ ddr1
cmp r5, #0
ldr r4, =at91_rstc_base
ldr r1, [r4]
mov r2, #1
mov r3, #AT91_DDRSDRC_LPCB_POWER_DOWN
ldr r4, =AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST
.balign 32 @ align to cache line
strne r2, [r5, #AT91_DDRSDRC_RTR] @ disable DDR1 access
strne r3, [r5, #AT91_DDRSDRC_LPR] @ power down DDR1
str r2, [r0, #AT91_DDRSDRC_RTR] @ disable DDR0 access
str r3, [r0, #AT91_DDRSDRC_LPR] @ power down DDR0
str r4, [r1, #AT91_RSTC_CR] @ reset processor
b .

51
arch/arm/mach-at91/at91sam9rl.c
View file

@ -10,6 +10,7 @@
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/clk/at91_pmc.h>
#include <asm/proc-fns.h>
@ -23,7 +24,6 @@
#include <mach/hardware.h>
#include "at91_aic.h"
#include "at91_rstc.h"
#include "soc.h"
#include "generic.h"
#include "sam9_smc.h"
@ -311,8 +311,6 @@ static void __init at91sam9rl_map_io(void)
static void __init at91sam9rl_ioremap_registers(void)
{
at91_ioremap_shdwc(AT91SAM9RL_BASE_SHDWC);
at91_ioremap_rstc(AT91SAM9RL_BASE_RSTC);
at91_ioremap_ramc(0, AT91SAM9RL_BASE_SDRAMC, 512);
at91sam926x_ioremap_pit(AT91SAM9RL_BASE_PIT);
at91sam9_ioremap_smc(0, AT91SAM9RL_BASE_SMC);
@ -323,7 +321,6 @@ static void __init at91sam9rl_ioremap_registers(void)
static void __init at91sam9rl_initialize(void)
{
arm_pm_idle = at91sam9_idle;
arm_pm_restart = at91sam9_alt_restart;
at91_sysirq_mask_rtc(AT91SAM9RL_BASE_RTC);
at91_sysirq_mask_rtt(AT91SAM9RL_BASE_RTT);
@ -332,6 +329,45 @@ static void __init at91sam9rl_initialize(void)
at91_gpio_init(at91sam9rl_gpio, 4);
}
static struct resource rstc_resources[] = {
[0] = {
.start = AT91SAM9RL_BASE_RSTC,
.end = AT91SAM9RL_BASE_RSTC + SZ_16 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9RL_BASE_SDRAMC,
.end = AT91SAM9RL_BASE_SDRAMC + SZ_512 - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device rstc_device = {
.name = "at91-sam9260-reset",
.resource = rstc_resources,
.num_resources = ARRAY_SIZE(rstc_resources),
};
static struct resource shdwc_resources[] = {
[0] = {
.start = AT91SAM9RL_BASE_SHDWC,
.end = AT91SAM9RL_BASE_SHDWC + SZ_16 - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device shdwc_device = {
.name = "at91-poweroff",
.resource = shdwc_resources,
.num_resources = ARRAY_SIZE(shdwc_resources),
};
static void __init at91sam9rl_register_devices(void)
{
platform_device_register(&rstc_device);
platform_device_register(&shdwc_device);
}
/* --------------------------------------------------------------------
* Interrupt initialization
* -------------------------------------------------------------------- */
@ -374,6 +410,11 @@ static unsigned int at91sam9rl_default_irq_priority[NR_AIC_IRQS] __initdata = {
0, /* Advanced Interrupt Controller */
};
static void __init at91sam9rl_init_time(void)
{
at91sam926x_pit_init(NR_IRQS_LEGACY + AT91_ID_SYS);
}
AT91_SOC_START(at91sam9rl)
.map_io = at91sam9rl_map_io,
.default_irq_priority = at91sam9rl_default_irq_priority,
@ -382,5 +423,7 @@ AT91_SOC_START(at91sam9rl)
#if defined(CONFIG_OLD_CLK_AT91)
.register_clocks = at91sam9rl_register_clocks,
#endif
.register_devices = at91sam9rl_register_devices,
.init = at91sam9rl_initialize,
.init_time = at91sam9rl_init_time,
AT91_SOC_END

4
arch/arm/mach-at91/board-afeb-9260v1.c
View file

@ -167,6 +167,8 @@ static struct at91_cf_data afeb9260_cf_data = {
static void __init afeb9260_board_init(void)
{
at91_register_devices();
/* Serial */
/* DBGU on ttyS0. (Rx & Tx only) */
at91_register_uart(0, 0, 0);
@ -211,7 +213,7 @@ static void __init afeb9260_board_init(void)
MACHINE_START(AFEB9260, "Custom afeb9260 board")
/* Maintainer: Sergey Lapin <slapin@ossfans.org> */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = afeb9260_init_early,

4
arch/arm/mach-at91/board-cam60.c
View file

@ -170,6 +170,8 @@ static void __init cam60_add_device_nand(void)
static void __init cam60_board_init(void)
{
at91_register_devices();
/* Serial */
/* DBGU on ttyS0. (Rx & Tx only) */
at91_register_uart(0, 0, 0);
@ -188,7 +190,7 @@ static void __init cam60_board_init(void)
MACHINE_START(CAM60, "KwikByte CAM60")
/* Maintainer: KwikByte */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = cam60_init_early,

4
arch/arm/mach-at91/board-cpu9krea.c
View file

@ -322,6 +322,8 @@ static struct mci_platform_data __initdata cpu9krea_mci0_data = {
static void __init cpu9krea_board_init(void)
{
at91_register_devices();
/* NOR */
cpu9krea_add_device_nor();
/* Serial */
@ -375,7 +377,7 @@ MACHINE_START(CPUAT9260, "Eukrea CPU9260")
MACHINE_START(CPUAT9G20, "Eukrea CPU9G20")
#endif
/* Maintainer: Eric Benard - EUKREA Electromatique */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = cpu9krea_init_early,

10
arch/arm/mach-at91/board-dt-sam9.c
View file

@ -25,15 +25,6 @@
#include "board.h"
#include "generic.h"
static void __init sam9_dt_timer_init(void)
{
#if defined(CONFIG_COMMON_CLK)
of_clk_init(NULL);
#endif
at91sam926x_pit_init();
}
static const char *at91_dt_board_compat[] __initdata = {
"atmel,at91sam9",
NULL
@ -41,7 +32,6 @@ static const char *at91_dt_board_compat[] __initdata = {
DT_MACHINE_START(at91sam_dt, "Atmel AT91SAM (Device Tree)")
/* Maintainer: Atmel */
.init_time = sam9_dt_timer_init,
.map_io = at91_map_io,
.init_early = at91_dt_initialize,
.dt_compat = at91_dt_board_compat,

9
arch/arm/mach-at91/board-dt-sama5.c
View file

@ -27,14 +27,6 @@
#include "at91_aic.h"
#include "generic.h"
static void __init sama5_dt_timer_init(void)
{
#if defined(CONFIG_COMMON_CLK)
of_clk_init(NULL);
#endif
at91sam926x_pit_init();
}
static void __init sama5_dt_device_init(void)
{
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
@ -47,7 +39,6 @@ static const char *sama5_dt_board_compat[] __initconst = {
DT_MACHINE_START(sama5_dt, "Atmel SAMA5 (Device Tree)")
/* Maintainer: Atmel */
.init_time = sama5_dt_timer_init,
.map_io = at91_map_io,
.init_early = at91_dt_initialize,
.init_machine = sama5_dt_device_init,

4
arch/arm/mach-at91/board-flexibity.c
View file

@ -138,6 +138,8 @@ static struct gpio_led flexibity_leds[] = {
static void __init flexibity_board_init(void)
{
at91_register_devices();
/* Serial */
/* DBGU on ttyS0. (Rx & Tx only) */
at91_register_uart(0, 0, 0);
@ -160,7 +162,7 @@ static void __init flexibity_board_init(void)
MACHINE_START(FLEXIBITY, "Flexibity Connect")
/* Maintainer: Maxim Osipov */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = flexibity_init_early,

2
arch/arm/mach-at91/board-gsia18s.c
View file

@ -576,7 +576,7 @@ static void __init gsia18s_board_init(void)
}
MACHINE_START(GSIA18S, "GS_IA18_S")
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = gsia18s_init_early,

2
arch/arm/mach-at91/board-pcontrol-g20.c
View file

@ -219,7 +219,7 @@ static void __init pcontrol_g20_board_init(void)
MACHINE_START(PCONTROL_G20, "PControl G20")
/* Maintainer: pgsellmann@portner-elektronik.at */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = pcontrol_g20_init_early,

4
arch/arm/mach-at91/board-sam9-l9260.c
View file

@ -187,6 +187,8 @@ static struct gpio_led ek_leds[] = {
static void __init ek_board_init(void)
{
at91_register_devices();
/* Serial */
/* DBGU on ttyS0. (Rx & Tx only) */
at91_register_uart(0, 0, 0);
@ -219,7 +221,7 @@ static void __init ek_board_init(void)
MACHINE_START(SAM9_L9260, "Olimex SAM9-L9260")
/* Maintainer: Olimex */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = ek_init_early,

5
arch/arm/mach-at91/board-sam9260ek.c
View file

@ -45,7 +45,6 @@
#include <mach/system_rev.h>
#include "at91_aic.h"
#include "at91_shdwc.h"
#include "board.h"
#include "sam9_smc.h"
#include "generic.h"
@ -307,6 +306,8 @@ static void __init ek_add_device_buttons(void) {}
static void __init ek_board_init(void)
{
at91_register_devices();
/* Serial */
/* DBGU on ttyS0. (Rx & Tx only) */
at91_register_uart(0, 0, 0);
@ -344,7 +345,7 @@ static void __init ek_board_init(void)
MACHINE_START(AT91SAM9260EK, "Atmel AT91SAM9260-EK")
/* Maintainer: Atmel */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = ek_init_early,

7
arch/arm/mach-at91/board-sam9261ek.c
View file

@ -49,7 +49,6 @@
#include <mach/system_rev.h>
#include "at91_aic.h"
#include "at91_shdwc.h"
#include "board.h"
#include "sam9_smc.h"
#include "generic.h"
@ -561,6 +560,8 @@ static struct gpio_led ek_leds[] = {
static void __init ek_board_init(void)
{
at91_register_devices();
/* Serial */
/* DBGU on ttyS0. (Rx & Tx only) */
at91_register_uart(0, 0, 0);
@ -603,7 +604,7 @@ static void __init ek_board_init(void)
MACHINE_START(AT91SAM9261EK, "Atmel AT91SAM9261-EK")
/* Maintainer: Atmel */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = ek_init_early,
@ -613,7 +614,7 @@ MACHINE_END
MACHINE_START(AT91SAM9G10EK, "Atmel AT91SAM9G10-EK")
/* Maintainer: Atmel */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = ek_init_early,

5
arch/arm/mach-at91/board-sam9263ek.c
View file

@ -50,7 +50,6 @@
#include <mach/system_rev.h>
#include "at91_aic.h"
#include "at91_shdwc.h"
#include "board.h"
#include "sam9_smc.h"
#include "generic.h"
@ -439,6 +438,8 @@ static struct platform_device *devices[] __initdata = {
static void __init ek_board_init(void)
{
at91_register_devices();
/* Serial */
/* DBGU on ttyS0. (Rx & Tx only) */
at91_register_uart(0, 0, 0);
@ -483,7 +484,7 @@ static void __init ek_board_init(void)
MACHINE_START(AT91SAM9263EK, "Atmel AT91SAM9263-EK")
/* Maintainer: Atmel */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = ek_init_early,

4
arch/arm/mach-at91/board-sam9g20ek.c
View file

@ -410,7 +410,7 @@ static void __init ek_board_init(void)
MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
/* Maintainer: Atmel */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = ek_init_early,
@ -420,7 +420,7 @@ MACHINE_END
MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
/* Maintainer: Atmel */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = ek_init_early,

5
arch/arm/mach-at91/board-sam9m10g45ek.c
View file

@ -48,7 +48,6 @@
#include <mach/system_rev.h>
#include "at91_aic.h"
#include "at91_shdwc.h"
#include "board.h"
#include "sam9_smc.h"
#include "generic.h"
@ -471,6 +470,8 @@ static struct platform_device *devices[] __initdata = {
static void __init ek_board_init(void)
{
at91_register_devices();
/* Serial */
/* DGBU on ttyS0. (Rx & Tx only) */
at91_register_uart(0, 0, 0);
@ -517,7 +518,7 @@ static void __init ek_board_init(void)
MACHINE_START(AT91SAM9M10G45EK, "Atmel AT91SAM9M10G45-EK")
/* Maintainer: Atmel */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = ek_init_early,

5
arch/arm/mach-at91/board-sam9rlek.c
View file

@ -35,7 +35,6 @@
#include "at91_aic.h"
#include "at91_shdwc.h"
#include "board.h"
#include "sam9_smc.h"
#include "generic.h"
@ -292,6 +291,8 @@ static void __init ek_add_device_buttons(void) {}
static void __init ek_board_init(void)
{
at91_register_devices();
/* Serial */
/* DBGU on ttyS0. (Rx & Tx only) */
at91_register_uart(0, 0, 0);
@ -323,7 +324,7 @@ static void __init ek_board_init(void)
MACHINE_START(AT91SAM9RLEK, "Atmel AT91SAM9RL-EK")
/* Maintainer: Atmel */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = ek_init_early,

4
arch/arm/mach-at91/board-snapper9260.c
View file

@ -154,6 +154,8 @@ static void __init snapper9260_add_device_nand(void)
static void __init snapper9260_board_init(void)
{
at91_register_devices();
at91_add_device_i2c(snapper9260_i2c_devices,
ARRAY_SIZE(snapper9260_i2c_devices));
@ -178,7 +180,7 @@ static void __init snapper9260_board_init(void)
}
MACHINE_START(SNAPPER_9260, "Bluewater Systems Snapper 9260/9G20 module")
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = snapper9260_init_early,

4
arch/arm/mach-at91/board-stamp9g20.c
View file

@ -275,7 +275,7 @@ static void __init stamp9g20evb_board_init(void)
MACHINE_START(PORTUXG20, "taskit PortuxG20")
/* Maintainer: taskit GmbH */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = stamp9g20_init_early,
@ -285,7 +285,7 @@ MACHINE_END
MACHINE_START(STAMP9G20, "taskit Stamp9G20")
/* Maintainer: taskit GmbH */
.init_time = at91sam926x_pit_init,
.init_time = at91_init_time,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = stamp9g20_init_early,

18
arch/arm/mach-at91/generic.h
View file

@ -8,6 +8,9 @@
* published by the Free Software Foundation.
*/
#ifndef _AT91_GENERIC_H
#define _AT91_GENERIC_H
#include <linux/clkdev.h>
#include <linux/of.h>
#include <linux/reboot.h>
@ -38,12 +41,15 @@ extern int __init at91_aic5_of_init(struct device_node *node,
extern void __init at91_sysirq_mask_rtc(u32 rtc_base);
extern void __init at91_sysirq_mask_rtt(u32 rtt_base);
/* Devices */
extern void __init at91_register_devices(void);
/* Timer */
extern void __init at91_init_time(void);
extern void at91rm9200_ioremap_st(u32 addr);
extern void at91rm9200_timer_init(void);
extern void at91sam926x_ioremap_pit(u32 addr);
extern void at91sam926x_pit_init(void);
extern void at91sam926x_pit_init(int irq);
extern void at91x40_timer_init(void);
/* Clocks */
@ -63,14 +69,6 @@ extern void at91_irq_resume(void);
/* idle */
extern void at91sam9_idle(void);
/* reset */
extern void at91_ioremap_rstc(u32 base_addr);
extern void at91sam9_alt_restart(enum reboot_mode, const char *);
extern void at91sam9g45_restart(enum reboot_mode, const char *);
/* shutdown */
extern void at91_ioremap_shdwc(u32 base_addr);
/* Matrix */
extern void at91_ioremap_matrix(u32 base_addr);
@ -91,3 +89,5 @@ extern int __init at91_gpio_of_irq_setup(struct device_node *node,
struct device_node *parent);
extern u32 at91_get_extern_irq(void);
#endif /* _AT91_GENERIC_H */

72
arch/arm/mach-at91/pm.c
View file

@ -34,79 +34,8 @@
#include "pm.h"
#include "gpio.h"
/*
* Show the reason for the previous system reset.
*/
#include "at91_rstc.h"
#include "at91_shdwc.h"
static void (*at91_pm_standby)(void);
static void __init show_reset_status(void)
{
static char reset[] __initdata = "reset";
static char general[] __initdata = "general";
static char wakeup[] __initdata = "wakeup";
static char watchdog[] __initdata = "watchdog";
static char software[] __initdata = "software";
static char user[] __initdata = "user";
static char unknown[] __initdata = "unknown";
static char signal[] __initdata = "signal";
static char rtc[] __initdata = "rtc";
static char rtt[] __initdata = "rtt";
static char restore[] __initdata = "power-restored";
char *reason, *r2 = reset;
u32 reset_type, wake_type;
if (!at91_shdwc_base || !at91_rstc_base)
return;
reset_type = at91_rstc_read(AT91_RSTC_SR) & AT91_RSTC_RSTTYP;
wake_type = at91_shdwc_read(AT91_SHDW_SR);
switch (reset_type) {
case AT91_RSTC_RSTTYP_GENERAL:
reason = general;
break;
case AT91_RSTC_RSTTYP_WAKEUP:
/* board-specific code enabled the wakeup sources */
reason = wakeup;
/* "wakeup signal" */
if (wake_type & AT91_SHDW_WAKEUP0)
r2 = signal;
else {
r2 = reason;
if (wake_type & AT91_SHDW_RTTWK) /* rtt wakeup */
reason = rtt;
else if (wake_type & AT91_SHDW_RTCWK) /* rtc wakeup */
reason = rtc;
else if (wake_type == 0) /* power-restored wakeup */
reason = restore;
else /* unknown wakeup */
reason = unknown;
}
break;
case AT91_RSTC_RSTTYP_WATCHDOG:
reason = watchdog;
break;
case AT91_RSTC_RSTTYP_SOFTWARE:
reason = software;
break;
case AT91_RSTC_RSTTYP_USER:
reason = user;
break;
default:
reason = unknown;
break;
}
pr_info("AT91: Starting after %s %s\n", reason, r2);
}
static int at91_pm_valid_state(suspend_state_t state)
{
switch (state) {
@ -346,7 +275,6 @@ static int __init at91_pm_init(void)
suspend_set_ops(&at91_pm_ops);
show_reset_status();
return 0;
}
arch_initcall(at91_pm_init);

185
arch/arm/mach-at91/setup.c
View file

@ -5,6 +5,8 @@
* Under GPLv2
*/
#define pr_fmt(fmt) "AT91: " fmt
#include <linux/module.h>
#include <linux/io.h>
#include <linux/mm.h>
@ -20,7 +22,6 @@
#include <mach/cpu.h>
#include <mach/at91_dbgu.h>
#include "at91_shdwc.h"
#include "soc.h"
#include "generic.h"
#include "pm.h"
@ -37,7 +38,7 @@ void __init at91rm9200_set_type(int type)
else
at91_soc_initdata.subtype = AT91_SOC_RM9200_BGA;
pr_info("AT91: filled in soc subtype: %s\n",
pr_info("filled in soc subtype: %s\n",
at91_get_soc_subtype(&at91_soc_initdata));
}
@ -67,7 +68,7 @@ void __init at91_ioremap_ramc(int id, u32 addr, u32 size)
}
at91_ramc_base[id] = ioremap(addr, size);
if (!at91_ramc_base[id])
panic("Impossible to ioremap ramc.%d 0x%x\n", id, addr);
panic(pr_fmt("Impossible to ioremap ramc.%d 0x%x\n"), id, addr);
}
static struct map_desc sram_desc[2] __initdata;
@ -84,7 +85,7 @@ void __init at91_init_sram(int bank, unsigned long base, unsigned int length)
desc->length = length;
desc->type = MT_MEMORY_RWX_NONCACHED;
pr_info("AT91: sram at 0x%lx of 0x%x mapped at 0x%lx\n",
pr_info("sram at 0x%lx of 0x%x mapped at 0x%lx\n",
base, length, desc->virtual);
iotable_init(desc, 1);
@ -367,45 +368,21 @@ void __init at91_map_io(void)
soc_detect(AT91_BASE_DBGU1);
if (!at91_soc_is_detected())
panic("AT91: Impossible to detect the SOC type");
panic(pr_fmt("Impossible to detect the SOC type"));
pr_info("AT91: Detected soc type: %s\n",
pr_info("Detected soc type: %s\n",
at91_get_soc_type(&at91_soc_initdata));
if (at91_soc_initdata.subtype != AT91_SOC_SUBTYPE_NONE)
pr_info("AT91: Detected soc subtype: %s\n",
pr_info("Detected soc subtype: %s\n",
at91_get_soc_subtype(&at91_soc_initdata));
if (!at91_soc_is_enabled())
panic("AT91: Soc not enabled");
panic(pr_fmt("Soc not enabled"));
if (at91_boot_soc.map_io)
at91_boot_soc.map_io();
}
void __iomem *at91_shdwc_base = NULL;
static void at91sam9_poweroff(void)
{
at91_shdwc_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
}
void __init at91_ioremap_shdwc(u32 base_addr)
{
at91_shdwc_base = ioremap(base_addr, 16);
if (!at91_shdwc_base)
panic("Impossible to ioremap at91_shdwc_base\n");
pm_power_off = at91sam9_poweroff;
}
void __iomem *at91_rstc_base;
void __init at91_ioremap_rstc(u32 base_addr)
{
at91_rstc_base = ioremap(base_addr, 16);
if (!at91_rstc_base)
panic("Impossible to ioremap at91_rstc_base\n");
}
void __init at91_alt_map_io(void)
{
/* Map peripherals */
@ -438,42 +415,15 @@ void __init at91_ioremap_matrix(u32 base_addr)
{
at91_matrix_base = ioremap(base_addr, 512);
if (!at91_matrix_base)
panic("Impossible to ioremap at91_matrix_base\n");
panic(pr_fmt("Impossible to ioremap at91_matrix_base\n"));
}
#if defined(CONFIG_OF) && !defined(CONFIG_ARCH_AT91X40)
static struct of_device_id rstc_ids[] = {
{ .compatible = "atmel,at91sam9260-rstc", .data = at91sam9_alt_restart },
{ .compatible = "atmel,at91sam9g45-rstc", .data = at91sam9g45_restart },
{ /*sentinel*/ }
};
static void at91_dt_rstc(void)
{
struct device_node *np;
const struct of_device_id *of_id;
np = of_find_matching_node(NULL, rstc_ids);
if (!np)
panic("unable to find compatible rstc node in dtb\n");
at91_rstc_base = of_iomap(np, 0);
if (!at91_rstc_base)
panic("unable to map rstc cpu registers\n");
of_id = of_match_node(rstc_ids, np);
if (!of_id)
panic("AT91: rtsc no restart function available\n");
arm_pm_restart = of_id->data;
of_node_put(np);
}
static struct of_device_id ramc_ids[] = {
{ .compatible = "atmel,at91rm9200-sdramc", .data = at91rm9200_standby },
{ .compatible = "atmel,at91sam9260-sdramc", .data = at91sam9_sdram_standby },
{ .compatible = "atmel,at91sam9g45-ddramc", .data = at91_ddr_standby },
{ .compatible = "atmel,sama5d3-ddramc", .data = at91_ddr_standby },
{ /*sentinel*/ }
};
@ -481,100 +431,29 @@ static void at91_dt_ramc(void)
{
struct device_node *np;
const struct of_device_id *of_id;
int idx = 0;
const void *standby = NULL;
np = of_find_matching_node(NULL, ramc_ids);
if (!np)
panic("unable to find compatible ram controller node in dtb\n");
for_each_matching_node_and_match(np, ramc_ids, &of_id) {
at91_ramc_base[idx] = of_iomap(np, 0);
if (!at91_ramc_base[idx])
panic(pr_fmt("unable to map ramc[%d] cpu registers\n"), idx);
at91_ramc_base[0] = of_iomap(np, 0);
if (!at91_ramc_base[0])
panic("unable to map ramc[0] cpu registers\n");
/* the controller may have 2 banks */
at91_ramc_base[1] = of_iomap(np, 1);
if (!standby)
standby = of_id->data;
of_id = of_match_node(ramc_ids, np);
if (!of_id)
pr_warn("AT91: ramc no standby function available\n");
else
at91_pm_set_standby(of_id->data);
idx++;
}
of_node_put(np);
}
if (!idx)
panic(pr_fmt("unable to find compatible ram controller node in dtb\n"));
static struct of_device_id shdwc_ids[] = {
{ .compatible = "atmel,at91sam9260-shdwc", },
{ .compatible = "atmel,at91sam9rl-shdwc", },
{ .compatible = "atmel,at91sam9x5-shdwc", },
{ /*sentinel*/ }
};
static const char *shdwc_wakeup_modes[] = {
[AT91_SHDW_WKMODE0_NONE] = "none",
[AT91_SHDW_WKMODE0_HIGH] = "high",
[AT91_SHDW_WKMODE0_LOW] = "low",
[AT91_SHDW_WKMODE0_ANYLEVEL] = "any",
};
const int at91_dtget_shdwc_wakeup_mode(struct device_node *np)
{
const char *pm;
int err, i;
err = of_property_read_string(np, "atmel,wakeup-mode", &pm);
if (err < 0)
return AT91_SHDW_WKMODE0_ANYLEVEL;
for (i = 0; i < ARRAY_SIZE(shdwc_wakeup_modes); i++)
if (!strcasecmp(pm, shdwc_wakeup_modes[i]))
return i;
return -ENODEV;
}
static void at91_dt_shdwc(void)
{
struct device_node *np;
int wakeup_mode;
u32 reg;
u32 mode = 0;
np = of_find_matching_node(NULL, shdwc_ids);
if (!np) {
pr_debug("AT91: unable to find compatible shutdown (shdwc) controller node in dtb\n");
if (!standby) {
pr_warn("ramc no standby function available\n");
return;
}
at91_shdwc_base = of_iomap(np, 0);
if (!at91_shdwc_base)
panic("AT91: unable to map shdwc cpu registers\n");
wakeup_mode = at91_dtget_shdwc_wakeup_mode(np);
if (wakeup_mode < 0) {
pr_warn("AT91: shdwc unknown wakeup mode\n");
goto end;
}
if (!of_property_read_u32(np, "atmel,wakeup-counter", &reg)) {
if (reg > AT91_SHDW_CPTWK0_MAX) {
pr_warn("AT91: shdwc wakeup counter 0x%x > 0x%x reduce it to 0x%x\n",
reg, AT91_SHDW_CPTWK0_MAX, AT91_SHDW_CPTWK0_MAX);
reg = AT91_SHDW_CPTWK0_MAX;
}
mode |= AT91_SHDW_CPTWK0_(reg);
}
if (of_property_read_bool(np, "atmel,wakeup-rtc-timer"))
mode |= AT91_SHDW_RTCWKEN;
if (of_property_read_bool(np, "atmel,wakeup-rtt-timer"))
mode |= AT91_SHDW_RTTWKEN;
at91_shdwc_write(AT91_SHDW_MR, wakeup_mode | mode);
end:
pm_power_off = at91sam9_poweroff;
of_node_put(np);
at91_pm_set_standby(standby);
}
void __init at91rm9200_dt_initialize(void)
@ -593,9 +472,7 @@ void __init at91rm9200_dt_initialize(void)
void __init at91_dt_initialize(void)
{
at91_dt_rstc();
at91_dt_ramc();
at91_dt_shdwc();
/* Init clock subsystem */
at91_dt_clock_init();
@ -623,3 +500,13 @@ void __init at91_initialize(unsigned long main_clock)
pinctrl_provide_dummies();
}
void __init at91_register_devices(void)
{
at91_boot_soc.register_devices();
}
void __init at91_init_time(void)
{
at91_boot_soc.init_time();
}

2
arch/arm/mach-at91/soc.h
View file

@ -11,7 +11,9 @@ struct at91_init_soc {
void (*map_io)(void);
void (*ioremap_registers)(void);
void (*register_clocks)(void);
void (*register_devices)(void);
void (*init)(void);
void (*init_time)(void);
};
extern struct at91_init_soc at91_boot_soc;

1
arch/arm/mach-omap2/Kconfig
View file

@ -83,6 +83,7 @@ config ARCH_OMAP2PLUS
select PINCTRL
select SOC_BUS
select TI_PRIV_EDMA
select OMAP_IRQCHIP
help
Systems based on OMAP2, OMAP3, OMAP4 or OMAP5

3
arch/arm/mach-omap2/Makefile
View file

@ -10,7 +10,6 @@ obj-y := id.o io.o control.o mux.o devices.o fb.o serial.o gpmc.o timer.o pm.o \
common.o gpio.o dma.o wd_timer.o display.o i2c.o hdq1w.o omap_hwmod.o \
omap_device.o sram.o drm.o
omap-2-3-common = irq.o
hwmod-common = omap_hwmod.o omap_hwmod_reset.o \
omap_hwmod_common_data.o
clock-common = clock.o clock_common_data.o \
@ -20,7 +19,7 @@ secure-common = omap-smc.o omap-secure.o
obj-$(CONFIG_ARCH_OMAP2) += $(omap-2-3-common) $(hwmod-common)
obj-$(CONFIG_ARCH_OMAP3) += $(omap-2-3-common) $(hwmod-common) $(secure-common)
obj-$(CONFIG_ARCH_OMAP4) += $(hwmod-common) $(secure-common)
obj-$(CONFIG_SOC_AM33XX) += irq.o $(hwmod-common)
obj-$(CONFIG_SOC_AM33XX) += $(hwmod-common)
obj-$(CONFIG_SOC_OMAP5) += $(hwmod-common) $(secure-common)
obj-$(CONFIG_SOC_AM43XX) += $(hwmod-common) $(secure-common)
obj-$(CONFIG_SOC_DRA7XX) += $(hwmod-common) $(secure-common)

1
arch/arm/mach-omap2/board-3430sdp.c
View file

@ -625,7 +625,6 @@ MACHINE_START(OMAP_3430SDP, "OMAP3430 3430SDP board")
.map_io = omap3_map_io,
.init_early = omap3430_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = omap_3430sdp_init,
.init_late = omap3430_init_late,
.init_time = omap3_sync32k_timer_init,

1
arch/arm/mach-omap2/board-am3517crane.c
View file

@ -142,7 +142,6 @@ MACHINE_START(CRANEBOARD, "AM3517/05 CRANEBOARD")
.map_io = omap3_map_io,
.init_early = am35xx_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = am3517_crane_init,
.init_late = am35xx_init_late,
.init_time = omap3_sync32k_timer_init,

1
arch/arm/mach-omap2/board-am3517evm.c
View file

@ -366,7 +366,6 @@ MACHINE_START(OMAP3517EVM, "OMAP3517/AM3517 EVM")
.map_io = omap3_map_io,
.init_early = am35xx_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = am3517_evm_init,
.init_late = am35xx_init_late,
.init_time = omap3_sync32k_timer_init,

2
arch/arm/mach-omap2/board-cm-t35.c
View file

@ -766,7 +766,6 @@ MACHINE_START(CM_T35, "Compulab CM-T35")
.map_io = omap3_map_io,
.init_early = omap35xx_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = cm_t35_init,
.init_late = omap35xx_init_late,
.init_time = omap3_sync32k_timer_init,
@ -779,7 +778,6 @@ MACHINE_START(CM_T3730, "Compulab CM-T3730")
.map_io = omap3_map_io,
.init_early = omap3630_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = cm_t3730_init,
.init_late = omap3630_init_late,
.init_time = omap3_sync32k_timer_init,

1
arch/arm/mach-omap2/board-cm-t3517.c
View file

@ -329,7 +329,6 @@ MACHINE_START(CM_T3517, "Compulab CM-T3517")
.map_io = omap3_map_io,
.init_early = am35xx_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = cm_t3517_init,
.init_late = am35xx_init_late,
.init_time = omap3_gptimer_timer_init,

1
arch/arm/mach-omap2/board-devkit8000.c
View file

@ -647,7 +647,6 @@ MACHINE_START(DEVKIT8000, "OMAP3 Devkit8000")
.map_io = omap3_map_io,
.init_early = omap35xx_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = devkit8000_init,
.init_late = omap35xx_init_late,
.init_time = omap3_secure_sync32k_timer_init,

14
arch/arm/mach-omap2/board-generic.c
View file

@ -52,8 +52,6 @@ DT_MACHINE_START(OMAP242X_DT, "Generic OMAP2420 (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap242x_map_io,
.init_early = omap2420_init_early,
.init_irq = omap_intc_of_init,
.handle_irq = omap2_intc_handle_irq,
.init_machine = omap_generic_init,
.init_time = omap2_sync32k_timer_init,
.dt_compat = omap242x_boards_compat,
@ -71,8 +69,6 @@ DT_MACHINE_START(OMAP243X_DT, "Generic OMAP2430 (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap243x_map_io,
.init_early = omap2430_init_early,
.init_irq = omap_intc_of_init,
.handle_irq = omap2_intc_handle_irq,
.init_machine = omap_generic_init,
.init_time = omap2_sync32k_timer_init,
.dt_compat = omap243x_boards_compat,
@ -91,8 +87,6 @@ DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap3_map_io,
.init_early = omap3430_init_early,
.init_irq = omap_intc_of_init,
.handle_irq = omap3_intc_handle_irq,
.init_machine = omap_generic_init,
.init_late = omap3_init_late,
.init_time = omap3_sync32k_timer_init,
@ -109,8 +103,6 @@ DT_MACHINE_START(OMAP36XX_DT, "Generic OMAP36xx (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap3_map_io,
.init_early = omap3630_init_early,
.init_irq = omap_intc_of_init,
.handle_irq = omap3_intc_handle_irq,
.init_machine = omap_generic_init,
.init_late = omap3_init_late,
.init_time = omap3_sync32k_timer_init,
@ -128,8 +120,6 @@ DT_MACHINE_START(OMAP3_GP_DT, "Generic OMAP3-GP (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap3_map_io,
.init_early = omap3430_init_early,
.init_irq = omap_intc_of_init,
.handle_irq = omap3_intc_handle_irq,
.init_machine = omap_generic_init,
.init_late = omap3_init_late,
.init_time = omap3_secure_sync32k_timer_init,
@ -146,8 +136,6 @@ DT_MACHINE_START(AM3517_DT, "Generic AM3517 (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap3_map_io,
.init_early = am35xx_init_early,
.init_irq = omap_intc_of_init,
.handle_irq = omap3_intc_handle_irq,
.init_machine = omap_generic_init,
.init_late = omap3_init_late,
.init_time = omap3_gptimer_timer_init,
@ -166,8 +154,6 @@ DT_MACHINE_START(AM33XX_DT, "Generic AM33XX (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = am33xx_map_io,
.init_early = am33xx_init_early,
.init_irq = omap_intc_of_init,
.handle_irq = omap3_intc_handle_irq,
.init_machine = omap_generic_init,
.init_late = am33xx_init_late,
.init_time = omap3_gptimer_timer_init,

1
arch/arm/mach-omap2/board-ldp.c
View file

@ -422,7 +422,6 @@ MACHINE_START(OMAP_LDP, "OMAP LDP board")
.map_io = omap3_map_io,
.init_early = omap3430_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = omap_ldp_init,
.init_late = omap3430_init_late,
.init_time = omap3_sync32k_timer_init,

26
arch/arm/mach-omap2/board-n8x0.c
View file

@ -33,6 +33,7 @@
#include "mmc.h"
#include "soc.h"
#include "gpmc-onenand.h"
#include "common-board-devices.h"
#define TUSB6010_ASYNC_CS 1
#define TUSB6010_SYNC_CS 4
@ -568,29 +569,14 @@ static int n8x0_menelaus_late_init(struct device *dev)
}
#endif
static struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = {
struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = {
.late_init = n8x0_menelaus_late_init,
};
static struct i2c_board_info __initdata n8x0_i2c_board_info_1[] __initdata = {
{
I2C_BOARD_INFO("menelaus", 0x72),
.irq = 7 + OMAP_INTC_START,
.platform_data = &n8x0_menelaus_platform_data,
},
};
static struct aic3x_pdata n810_aic33_data __initdata = {
struct aic3x_pdata n810_aic33_data __initdata = {
.gpio_reset = 118,
};
static struct i2c_board_info n810_i2c_board_info_2[] __initdata = {
{
I2C_BOARD_INFO("tlv320aic3x", 0x18),
.platform_data = &n810_aic33_data,
},
};
static int __init n8x0_late_initcall(void)
{
if (!board_caps)
@ -612,11 +598,5 @@ void * __init n8x0_legacy_init(void)
board_check_revision();
spi_register_board_info(n800_spi_board_info,
ARRAY_SIZE(n800_spi_board_info));
i2c_register_board_info(0, n8x0_i2c_board_info_1,
ARRAY_SIZE(n8x0_i2c_board_info_1));
if (board_is_n810())
i2c_register_board_info(1, n810_i2c_board_info_2,
ARRAY_SIZE(n810_i2c_board_info_2));
return &mmc1_data;
}

1
arch/arm/mach-omap2/board-omap3beagle.c
View file

@ -588,7 +588,6 @@ MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
.map_io = omap3_map_io,
.init_early = omap3_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = omap3_beagle_init,
.init_late = omap3_init_late,
.init_time = omap3_secure_sync32k_timer_init,

2
arch/arm/mach-omap2/board-omap3logic.c
View file

@ -230,7 +230,6 @@ MACHINE_START(OMAP3_TORPEDO, "Logic OMAP3 Torpedo board")
.map_io = omap3_map_io,
.init_early = omap35xx_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = omap3logic_init,
.init_late = omap35xx_init_late,
.init_time = omap3_sync32k_timer_init,
@ -243,7 +242,6 @@ MACHINE_START(OMAP3530_LV_SOM, "OMAP Logic 3530 LV SOM board")
.map_io = omap3_map_io,
.init_early = omap35xx_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = omap3logic_init,
.init_late = omap35xx_init_late,
.init_time = omap3_sync32k_timer_init,

1
arch/arm/mach-omap2/board-omap3pandora.c
View file

@ -624,7 +624,6 @@ MACHINE_START(OMAP3_PANDORA, "Pandora Handheld Console")
.map_io = omap3_map_io,
.init_early = omap35xx_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = omap3pandora_init,
.init_late = omap35xx_init_late,
.init_time = omap3_sync32k_timer_init,

1
arch/arm/mach-omap2/board-omap3stalker.c
View file

@ -426,7 +426,6 @@ MACHINE_START(SBC3530, "OMAP3 STALKER")
.map_io = omap3_map_io,
.init_early = omap35xx_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = omap3_stalker_init,
.init_late = omap35xx_init_late,
.init_time = omap3_secure_sync32k_timer_init,

1
arch/arm/mach-omap2/board-omap3touchbook.c
View file

@ -388,7 +388,6 @@ MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
.map_io = omap3_map_io,
.init_early = omap3430_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = omap3_touchbook_init,
.init_late = omap3430_init_late,
.init_time = omap3_secure_sync32k_timer_init,

1
arch/arm/mach-omap2/board-overo.c
View file

@ -564,7 +564,6 @@ MACHINE_START(OVERO, "Gumstix Overo")
.map_io = omap3_map_io,
.init_early = omap35xx_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = overo_init,
.init_late = omap35xx_init_late,
.init_time = omap3_sync32k_timer_init,

1
arch/arm/mach-omap2/board-rx51.c
View file

@ -134,7 +134,6 @@ MACHINE_START(NOKIA_RX51, "Nokia RX-51 board")
.map_io = omap3_map_io,
.init_early = omap3430_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = rx51_init,
.init_late = omap3430_init_late,
.init_time = omap3_sync32k_timer_init,

5
arch/arm/mach-omap2/common-board-devices.h
View file

@ -1,6 +1,8 @@
#ifndef __OMAP_COMMON_BOARD_DEVICES__
#define __OMAP_COMMON_BOARD_DEVICES__
#include <sound/tlv320aic3x.h>
#include <linux/mfd/menelaus.h>
#include "twl-common.h"
#define NAND_BLOCK_SIZE SZ_128K
@ -12,4 +14,7 @@ void omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
struct ads7846_platform_data *board_pdata);
void *n8x0_legacy_init(void);
extern struct menelaus_platform_data n8x0_menelaus_platform_data;
extern struct aic3x_pdata n810_aic33_data;
#endif /* __OMAP_COMMON_BOARD_DEVICES__ */

23
arch/arm/mach-omap2/common.h
View file

@ -32,6 +32,7 @@
#include <linux/i2c/twl.h>
#include <linux/i2c-omap.h>
#include <linux/reboot.h>
#include <linux/irqchip/irq-omap-intc.h>
#include <asm/proc-fns.h>
@ -210,18 +211,6 @@ extern struct device *omap2_get_iva_device(void);
extern struct device *omap2_get_l3_device(void);
extern struct device *omap4_get_dsp_device(void);
void omap2_init_irq(void);
void omap3_init_irq(void);
void ti81xx_init_irq(void);
extern int omap_irq_pending(void);
void omap_intc_save_context(void);
void omap_intc_restore_context(void);
void omap3_intc_suspend(void);
void omap3_intc_prepare_idle(void);
void omap3_intc_resume_idle(void);
void omap2_intc_handle_irq(struct pt_regs *regs);
void omap3_intc_handle_irq(struct pt_regs *regs);
void omap_intc_of_init(void);
void omap_gic_of_init(void);
#ifdef CONFIG_CACHE_L2X0
@ -229,16 +218,6 @@ extern void __iomem *omap4_get_l2cache_base(void);
#endif
struct device_node;
#ifdef CONFIG_OF
int __init intc_of_init(struct device_node *node,
struct device_node *parent);
#else
int __init intc_of_init(struct device_node *node,
struct device_node *parent)
{
return 0;
}
#endif
#ifdef CONFIG_SMP
extern void __iomem *omap4_get_scu_base(void);

380
arch/arm/mach-omap2/irq.c
View file

@ -1,380 +0,0 @@
/*
* linux/arch/arm/mach-omap2/irq.c
*
* Interrupt handler for OMAP2 boards.
*
* Copyright (C) 2005 Nokia Corporation
* Author: Paul Mundt <paul.mundt@nokia.com>
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <asm/exception.h>
#include <asm/mach/irq.h>
#include <linux/irqdomain.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include "soc.h"
#include "iomap.h"
#include "common.h"
/* selected INTC register offsets */
#define INTC_REVISION 0x0000
#define INTC_SYSCONFIG 0x0010
#define INTC_SYSSTATUS 0x0014
#define INTC_SIR 0x0040
#define INTC_CONTROL 0x0048
#define INTC_PROTECTION 0x004C
#define INTC_IDLE 0x0050
#define INTC_THRESHOLD 0x0068
#define INTC_MIR0 0x0084
#define INTC_MIR_CLEAR0 0x0088
#define INTC_MIR_SET0 0x008c
#define INTC_PENDING_IRQ0 0x0098
/* Number of IRQ state bits in each MIR register */
#define IRQ_BITS_PER_REG 32
#define OMAP2_IRQ_BASE OMAP2_L4_IO_ADDRESS(OMAP24XX_IC_BASE)
#define OMAP3_IRQ_BASE OMAP2_L4_IO_ADDRESS(OMAP34XX_IC_BASE)
#define INTCPS_SIR_IRQ_OFFSET 0x0040 /* omap2/3 active interrupt offset */
#define ACTIVEIRQ_MASK 0x7f /* omap2/3 active interrupt bits */
#define INTCPS_NR_MIR_REGS 3
#define INTCPS_NR_IRQS 96
/*
* OMAP2 has a number of different interrupt controllers, each interrupt
* controller is identified as its own "bank". Register definitions are
* fairly consistent for each bank, but not all registers are implemented
* for each bank.. when in doubt, consult the TRM.
*/
static struct omap_irq_bank {
void __iomem *base_reg;
unsigned int nr_irqs;
} __attribute__ ((aligned(4))) irq_banks[] = {
{
/* MPU INTC */
.nr_irqs = 96,
},
};
static struct irq_domain *domain;
/* Structure to save interrupt controller context */
struct omap3_intc_regs {
u32 sysconfig;
u32 protection;
u32 idle;
u32 threshold;
u32 ilr[INTCPS_NR_IRQS];
u32 mir[INTCPS_NR_MIR_REGS];
};
/* INTC bank register get/set */
static void intc_bank_write_reg(u32 val, struct omap_irq_bank *bank, u16 reg)
{
writel_relaxed(val, bank->base_reg + reg);
}
static u32 intc_bank_read_reg(struct omap_irq_bank *bank, u16 reg)
{
return readl_relaxed(bank->base_reg + reg);
}
/* XXX: FIQ and additional INTC support (only MPU at the moment) */
static void omap_ack_irq(struct irq_data *d)
{
intc_bank_write_reg(0x1, &irq_banks[0], INTC_CONTROL);
}
static void omap_mask_ack_irq(struct irq_data *d)
{
irq_gc_mask_disable_reg(d);
omap_ack_irq(d);
}
static void __init omap_irq_bank_init_one(struct omap_irq_bank *bank)
{
unsigned long tmp;
tmp = intc_bank_read_reg(bank, INTC_REVISION) & 0xff;
pr_info("IRQ: Found an INTC at 0x%p (revision %ld.%ld) with %d interrupts\n",
bank->base_reg, tmp >> 4, tmp & 0xf, bank->nr_irqs);
tmp = intc_bank_read_reg(bank, INTC_SYSCONFIG);
tmp |= 1 << 1; /* soft reset */
intc_bank_write_reg(tmp, bank, INTC_SYSCONFIG);
while (!(intc_bank_read_reg(bank, INTC_SYSSTATUS) & 0x1))
/* Wait for reset to complete */;
/* Enable autoidle */
intc_bank_write_reg(1 << 0, bank, INTC_SYSCONFIG);
}
int omap_irq_pending(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(irq_banks); i++) {
struct omap_irq_bank *bank = irq_banks + i;
int irq;
for (irq = 0; irq < bank->nr_irqs; irq += 32)
if (intc_bank_read_reg(bank, INTC_PENDING_IRQ0 +
((irq >> 5) << 5)))
return 1;
}
return 0;
}
static __init void
omap_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num)
{
struct irq_chip_generic *gc;
struct irq_chip_type *ct;
gc = irq_alloc_generic_chip("INTC", 1, irq_start, base,
handle_level_irq);
ct = gc->chip_types;
ct->chip.irq_ack = omap_mask_ack_irq;
ct->chip.irq_mask = irq_gc_mask_disable_reg;
ct->chip.irq_unmask = irq_gc_unmask_enable_reg;
ct->chip.flags |= IRQCHIP_SKIP_SET_WAKE;
ct->regs.enable = INTC_MIR_CLEAR0;
ct->regs.disable = INTC_MIR_SET0;
irq_setup_generic_chip(gc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE,
IRQ_NOREQUEST | IRQ_NOPROBE, 0);
}
static void __init omap_init_irq(u32 base, int nr_irqs,
struct device_node *node)
{
void __iomem *omap_irq_base;
unsigned long nr_of_irqs = 0;
unsigned int nr_banks = 0;
int i, j, irq_base;
omap_irq_base = ioremap(base, SZ_4K);
if (WARN_ON(!omap_irq_base))
return;
irq_base = irq_alloc_descs(-1, 0, nr_irqs, 0);
if (irq_base < 0) {
pr_warn("Couldn't allocate IRQ numbers\n");
irq_base = 0;
}
domain = irq_domain_add_legacy(node, nr_irqs, irq_base, 0,
&irq_domain_simple_ops, NULL);
for (i = 0; i < ARRAY_SIZE(irq_banks); i++) {
struct omap_irq_bank *bank = irq_banks + i;
bank->nr_irqs = nr_irqs;
/* Static mapping, never released */
bank->base_reg = ioremap(base, SZ_4K);
if (!bank->base_reg) {
pr_err("Could not ioremap irq bank%i\n", i);
continue;
}
omap_irq_bank_init_one(bank);
for (j = 0; j < bank->nr_irqs; j += 32)
omap_alloc_gc(bank->base_reg + j, j + irq_base, 32);
nr_of_irqs += bank->nr_irqs;
nr_banks++;
}
pr_info("Total of %ld interrupts on %d active controller%s\n",
nr_of_irqs, nr_banks, nr_banks > 1 ? "s" : "");
}
void __init omap2_init_irq(void)
{
omap_init_irq(OMAP24XX_IC_BASE, 96, NULL);
}
void __init omap3_init_irq(void)
{
omap_init_irq(OMAP34XX_IC_BASE, 96, NULL);
}
void __init ti81xx_init_irq(void)
{
omap_init_irq(OMAP34XX_IC_BASE, 128, NULL);
}
static inline void omap_intc_handle_irq(void __iomem *base_addr, struct pt_regs *regs)
{
u32 irqnr;
int handled_irq = 0;
do {
irqnr = readl_relaxed(base_addr + 0x98);
if (irqnr)
goto out;
irqnr = readl_relaxed(base_addr + 0xb8);
if (irqnr)
goto out;
irqnr = readl_relaxed(base_addr + 0xd8);
#if IS_ENABLED(CONFIG_SOC_TI81XX) || IS_ENABLED(CONFIG_SOC_AM33XX)
if (irqnr)
goto out;
irqnr = readl_relaxed(base_addr + 0xf8);
#endif
out:
if (!irqnr)
break;
irqnr = readl_relaxed(base_addr + INTCPS_SIR_IRQ_OFFSET);
irqnr &= ACTIVEIRQ_MASK;
if (irqnr) {
irqnr = irq_find_mapping(domain, irqnr);
handle_IRQ(irqnr, regs);
handled_irq = 1;
}
} while (irqnr);
/* If an irq is masked or deasserted while active, we will
* keep ending up here with no irq handled. So remove it from
* the INTC with an ack.*/
if (!handled_irq)
omap_ack_irq(NULL);
}
asmlinkage void __exception_irq_entry omap2_intc_handle_irq(struct pt_regs *regs)
{
void __iomem *base_addr = OMAP2_IRQ_BASE;
omap_intc_handle_irq(base_addr, regs);
}
int __init intc_of_init(struct device_node *node,
struct device_node *parent)
{
struct resource res;
u32 nr_irq = 96;
if (WARN_ON(!node))
return -ENODEV;
if (of_address_to_resource(node, 0, &res)) {
WARN(1, "unable to get intc registers\n");
return -EINVAL;
}
if (of_property_read_u32(node, "ti,intc-size", &nr_irq))
pr_warn("unable to get intc-size, default to %d\n", nr_irq);
omap_init_irq(res.start, nr_irq, of_node_get(node));
return 0;
}
static const struct of_device_id irq_match[] __initconst = {
{ .compatible = "ti,omap2-intc", .data = intc_of_init, },
{ }
};
void __init omap_intc_of_init(void)
{
of_irq_init(irq_match);
}
#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_SOC_AM33XX)
static struct omap3_intc_regs intc_context[ARRAY_SIZE(irq_banks)];
void omap_intc_save_context(void)
{
int ind = 0, i = 0;
for (ind = 0; ind < ARRAY_SIZE(irq_banks); ind++) {
struct omap_irq_bank *bank = irq_banks + ind;
intc_context[ind].sysconfig =
intc_bank_read_reg(bank, INTC_SYSCONFIG);
intc_context[ind].protection =
intc_bank_read_reg(bank, INTC_PROTECTION);
intc_context[ind].idle =
intc_bank_read_reg(bank, INTC_IDLE);
intc_context[ind].threshold =
intc_bank_read_reg(bank, INTC_THRESHOLD);
for (i = 0; i < INTCPS_NR_IRQS; i++)
intc_context[ind].ilr[i] =
intc_bank_read_reg(bank, (0x100 + 0x4*i));
for (i = 0; i < INTCPS_NR_MIR_REGS; i++)
intc_context[ind].mir[i] =
intc_bank_read_reg(&irq_banks[0], INTC_MIR0 +
(0x20 * i));
}
}
void omap_intc_restore_context(void)
{
int ind = 0, i = 0;
for (ind = 0; ind < ARRAY_SIZE(irq_banks); ind++) {
struct omap_irq_bank *bank = irq_banks + ind;
intc_bank_write_reg(intc_context[ind].sysconfig,
bank, INTC_SYSCONFIG);
intc_bank_write_reg(intc_context[ind].sysconfig,
bank, INTC_SYSCONFIG);
intc_bank_write_reg(intc_context[ind].protection,
bank, INTC_PROTECTION);
intc_bank_write_reg(intc_context[ind].idle,
bank, INTC_IDLE);
intc_bank_write_reg(intc_context[ind].threshold,
bank, INTC_THRESHOLD);
for (i = 0; i < INTCPS_NR_IRQS; i++)
intc_bank_write_reg(intc_context[ind].ilr[i],
bank, (0x100 + 0x4*i));
for (i = 0; i < INTCPS_NR_MIR_REGS; i++)
intc_bank_write_reg(intc_context[ind].mir[i],
&irq_banks[0], INTC_MIR0 + (0x20 * i));
}
/* MIRs are saved and restore with other PRCM registers */
}
void omap3_intc_suspend(void)
{
/* A pending interrupt would prevent OMAP from entering suspend */
omap_ack_irq(NULL);
}
void omap3_intc_prepare_idle(void)
{
/*
* Disable autoidle as it can stall interrupt controller,
* cf. errata ID i540 for 3430 (all revisions up to 3.1.x)
*/
intc_bank_write_reg(0, &irq_banks[0], INTC_SYSCONFIG);
}
void omap3_intc_resume_idle(void)
{
/* Re-enable autoidle */
intc_bank_write_reg(1, &irq_banks[0], INTC_SYSCONFIG);
}
asmlinkage void __exception_irq_entry omap3_intc_handle_irq(struct pt_regs *regs)
{
void __iomem *base_addr = OMAP3_IRQ_BASE;
omap_intc_handle_irq(base_addr, regs);
}
#endif /* CONFIG_ARCH_OMAP3 */

2
arch/arm/mach-omap2/pdata-quirks.c
View file

@ -344,6 +344,8 @@ static struct pdata_init auxdata_quirks[] __initdata = {
struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
#ifdef CONFIG_MACH_NOKIA_N8X0
OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data),
OF_DEV_AUXDATA("tlv320aic3x", 0x18, "2-0018", &n810_aic33_data),
#endif
#ifdef CONFIG_ARCH_OMAP3
OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),

2
drivers/Kconfig
View file

@ -148,6 +148,8 @@ source "drivers/remoteproc/Kconfig"
source "drivers/rpmsg/Kconfig"
source "drivers/soc/Kconfig"
source "drivers/devfreq/Kconfig"
source "drivers/extcon/Kconfig"

5
drivers/bus/arm-ccn.c
View file

@ -57,6 +57,7 @@
#define CCN_DT_PMCCNTRSR 0x0190
#define CCN_DT_PMOVSR 0x0198
#define CCN_DT_PMOVSR_CLR 0x01a0
#define CCN_DT_PMOVSR_CLR__MASK 0x1f
#define CCN_DT_PMCR 0x01a8
#define CCN_DT_PMCR__OVFL_INTR_EN (1 << 6)
#define CCN_DT_PMCR__PMU_EN (1 << 0)
@ -1051,7 +1052,8 @@ static irqreturn_t arm_ccn_pmu_overflow_handler(struct arm_ccn_dt *dt)
struct perf_event *event = dt->pmu_counters[idx].event;
int overflowed = pmovsr & BIT(idx);
WARN_ON_ONCE(overflowed && !event);
WARN_ON_ONCE(overflowed && !event &&
idx != CCN_IDX_PMU_CYCLE_COUNTER);
if (!event || !overflowed)
continue;
@ -1087,6 +1089,7 @@ static int arm_ccn_pmu_init(struct arm_ccn *ccn)
/* Initialize DT subsystem */
ccn->dt.base = ccn->base + CCN_REGION_SIZE;
spin_lock_init(&ccn->dt.config_lock);
writel(CCN_DT_PMOVSR_CLR__MASK, ccn->dt.base + CCN_DT_PMOVSR_CLR);
writel(CCN_DT_CTL__DT_EN, ccn->dt.base + CCN_DT_CTL);
writel(CCN_DT_PMCR__OVFL_INTR_EN | CCN_DT_PMCR__PMU_EN,
ccn->dt.base + CCN_DT_PMCR);

8
drivers/clk/at91/clk-system.c
View file

@ -119,13 +119,7 @@ at91_clk_register_system(struct at91_pmc *pmc, const char *name,
init.ops = &system_ops;
init.parent_names = &parent_name;
init.num_parents = 1;
/*
* CLK_IGNORE_UNUSED is used to avoid ddrck switch off.
* TODO : we should implement a driver supporting at91 ddr controller
* (see drivers/memory) which would request and enable the ddrck clock.
* When this is done we will be able to remove CLK_IGNORE_UNUSED flag.
*/
init.flags = CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED;
init.flags = CLK_SET_RATE_PARENT;
sys->id = id;
sys->hw.init = &init;

4
drivers/clocksource/Kconfig
View file

@ -120,6 +120,10 @@ config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
help
Use ARM global timer clock source as sched_clock
config ATMEL_PIT
select CLKSRC_OF if OF
def_bool SOC_AT91SAM9 || SOC_SAMA5
config CLKSRC_METAG_GENERIC
def_bool y if METAG
help

1
drivers/clocksource/Makefile
View file

@ -1,4 +1,5 @@
obj-$(CONFIG_CLKSRC_OF) += clksrc-of.o
obj-$(CONFIG_ATMEL_PIT) += timer-atmel-pit.o
obj-$(CONFIG_ATMEL_TCB_CLKSRC) += tcb_clksrc.o
obj-$(CONFIG_X86_PM_TIMER) += acpi_pm.o
obj-$(CONFIG_SCx200HR_TIMER) += scx200_hrt.o

296
drivers/clocksource/timer-atmel-pit.c Normal file
View file

@ -0,0 +1,296 @@
/*
* at91sam926x_time.c - Periodic Interval Timer (PIT) for at91sam926x
*
* Copyright (C) 2005-2006 M. Amine SAYA, ATMEL Rousset, France
* Revision 2005 M. Nicolas Diremdjian, ATMEL Rousset, France
* Converted to ClockSource/ClockEvents by David Brownell.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#define pr_fmt(fmt) "AT91: PIT: " fmt
#include <linux/clk.h>
#include <linux/clockchips.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/slab.h>
#define AT91_PIT_MR 0x00 /* Mode Register */
#define AT91_PIT_PITIEN BIT(25) /* Timer Interrupt Enable */
#define AT91_PIT_PITEN BIT(24) /* Timer Enabled */
#define AT91_PIT_PIV GENMASK(19, 0) /* Periodic Interval Value */
#define AT91_PIT_SR 0x04 /* Status Register */
#define AT91_PIT_PITS BIT(0) /* Timer Status */
#define AT91_PIT_PIVR 0x08 /* Periodic Interval Value Register */
#define AT91_PIT_PIIR 0x0c /* Periodic Interval Image Register */
#define AT91_PIT_PICNT GENMASK(31, 20) /* Interval Counter */
#define AT91_PIT_CPIV GENMASK(19, 0) /* Inverval Value */
#define PIT_CPIV(x) ((x) & AT91_PIT_CPIV)
#define PIT_PICNT(x) (((x) & AT91_PIT_PICNT) >> 20)
struct pit_data {
struct clock_event_device clkevt;
struct clocksource clksrc;
void __iomem *base;
u32 cycle;
u32 cnt;
unsigned int irq;
struct clk *mck;
};
static inline struct pit_data *clksrc_to_pit_data(struct clocksource *clksrc)
{
return container_of(clksrc, struct pit_data, clksrc);
}
static inline struct pit_data *clkevt_to_pit_data(struct clock_event_device *clkevt)
{
return container_of(clkevt, struct pit_data, clkevt);
}
static inline unsigned int pit_read(void __iomem *base, unsigned int reg_offset)
{
return __raw_readl(base + reg_offset);
}
static inline void pit_write(void __iomem *base, unsigned int reg_offset, unsigned long value)
{
__raw_writel(value, base + reg_offset);
}
/*
* Clocksource: just a monotonic counter of MCK/16 cycles.
* We don't care whether or not PIT irqs are enabled.
*/
static cycle_t read_pit_clk(struct clocksource *cs)
{
struct pit_data *data = clksrc_to_pit_data(cs);
unsigned long flags;
u32 elapsed;
u32 t;
raw_local_irq_save(flags);
elapsed = data->cnt;
t = pit_read(data->base, AT91_PIT_PIIR);
raw_local_irq_restore(flags);
elapsed += PIT_PICNT(t) * data->cycle;
elapsed += PIT_CPIV(t);
return elapsed;
}
/*
* Clockevent device: interrupts every 1/HZ (== pit_cycles * MCK/16)
*/
static void
pit_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev)
{
struct pit_data *data = clkevt_to_pit_data(dev);
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
/* update clocksource counter */
data->cnt += data->cycle * PIT_PICNT(pit_read(data->base, AT91_PIT_PIVR));
pit_write(data->base, AT91_PIT_MR,
(data->cycle - 1) | AT91_PIT_PITEN | AT91_PIT_PITIEN);
break;
case CLOCK_EVT_MODE_ONESHOT:
BUG();
/* FALLTHROUGH */
case CLOCK_EVT_MODE_SHUTDOWN:
case CLOCK_EVT_MODE_UNUSED:
/* disable irq, leaving the clocksource active */
pit_write(data->base, AT91_PIT_MR,
(data->cycle - 1) | AT91_PIT_PITEN);
break;
case CLOCK_EVT_MODE_RESUME:
break;
}
}
static void at91sam926x_pit_suspend(struct clock_event_device *cedev)
{
struct pit_data *data = clkevt_to_pit_data(cedev);
/* Disable timer */
pit_write(data->base, AT91_PIT_MR, 0);
}
static void at91sam926x_pit_reset(struct pit_data *data)
{
/* Disable timer and irqs */
pit_write(data->base, AT91_PIT_MR, 0);
/* Clear any pending interrupts, wait for PIT to stop counting */
while (PIT_CPIV(pit_read(data->base, AT91_PIT_PIVR)) != 0)
cpu_relax();
/* Start PIT but don't enable IRQ */
pit_write(data->base, AT91_PIT_MR,
(data->cycle - 1) | AT91_PIT_PITEN);
}
static void at91sam926x_pit_resume(struct clock_event_device *cedev)
{
struct pit_data *data = clkevt_to_pit_data(cedev);
at91sam926x_pit_reset(data);
}
/*
* IRQ handler for the timer.
*/
static irqreturn_t at91sam926x_pit_interrupt(int irq, void *dev_id)
{
struct pit_data *data = dev_id;
/*
* irqs should be disabled here, but as the irq is shared they are only
* guaranteed to be off if the timer irq is registered first.
*/
WARN_ON_ONCE(!irqs_disabled());
/* The PIT interrupt may be disabled, and is shared */
if ((data->clkevt.mode == CLOCK_EVT_MODE_PERIODIC) &&
(pit_read(data->base, AT91_PIT_SR) & AT91_PIT_PITS)) {
unsigned nr_ticks;
/* Get number of ticks performed before irq, and ack it */
nr_ticks = PIT_PICNT(pit_read(data->base, AT91_PIT_PIVR));
do {
data->cnt += data->cycle;
data->clkevt.event_handler(&data->clkevt);
nr_ticks--;
} while (nr_ticks);
return IRQ_HANDLED;
}
return IRQ_NONE;
}
/*
* Set up both clocksource and clockevent support.
*/
static void __init at91sam926x_pit_common_init(struct pit_data *data)
{
unsigned long pit_rate;
unsigned bits;
int ret;
/*
* Use our actual MCK to figure out how many MCK/16 ticks per
* 1/HZ period (instead of a compile-time constant LATCH).
*/
pit_rate = clk_get_rate(data->mck) / 16;
data->cycle = DIV_ROUND_CLOSEST(pit_rate, HZ);
WARN_ON(((data->cycle - 1) & ~AT91_PIT_PIV) != 0);
/* Initialize and enable the timer */
at91sam926x_pit_reset(data);
/*
* Register clocksource. The high order bits of PIV are unused,
* so this isn't a 32-bit counter unless we get clockevent irqs.
*/
bits = 12 /* PICNT */ + ilog2(data->cycle) /* PIV */;
data->clksrc.mask = CLOCKSOURCE_MASK(bits);
data->clksrc.name = "pit";
data->clksrc.rating = 175;
data->clksrc.read = read_pit_clk,
data->clksrc.flags = CLOCK_SOURCE_IS_CONTINUOUS,
clocksource_register_hz(&data->clksrc, pit_rate);
/* Set up irq handler */
ret = request_irq(data->irq, at91sam926x_pit_interrupt,
IRQF_SHARED | IRQF_TIMER | IRQF_IRQPOLL,
"at91_tick", data);
if (ret)
panic(pr_fmt("Unable to setup IRQ\n"));
/* Set up and register clockevents */
data->clkevt.name = "pit";
data->clkevt.features = CLOCK_EVT_FEAT_PERIODIC;
data->clkevt.shift = 32;
data->clkevt.mult = div_sc(pit_rate, NSEC_PER_SEC, data->clkevt.shift);
data->clkevt.rating = 100;
data->clkevt.cpumask = cpumask_of(0);
data->clkevt.set_mode = pit_clkevt_mode;
data->clkevt.resume = at91sam926x_pit_resume;
data->clkevt.suspend = at91sam926x_pit_suspend;
clockevents_register_device(&data->clkevt);
}
static void __init at91sam926x_pit_dt_init(struct device_node *node)
{
struct pit_data *data;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
panic(pr_fmt("Unable to allocate memory\n"));
data->base = of_iomap(node, 0);
if (!data->base)
panic(pr_fmt("Could not map PIT address\n"));
data->mck = of_clk_get(node, 0);
if (IS_ERR(data->mck))
/* Fallback on clkdev for !CCF-based boards */
data->mck = clk_get(NULL, "mck");
if (IS_ERR(data->mck))
panic(pr_fmt("Unable to get mck clk\n"));
/* Get the interrupts property */
data->irq = irq_of_parse_and_map(node, 0);
if (!data->irq)
panic(pr_fmt("Unable to get IRQ from DT\n"));
at91sam926x_pit_common_init(data);
}
CLOCKSOURCE_OF_DECLARE(at91sam926x_pit, "atmel,at91sam9260-pit",
at91sam926x_pit_dt_init);
static void __iomem *pit_base_addr;
void __init at91sam926x_pit_init(int irq)
{
struct pit_data *data;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
panic(pr_fmt("Unable to allocate memory\n"));
data->base = pit_base_addr;
data->mck = clk_get(NULL, "mck");
if (IS_ERR(data->mck))
panic(pr_fmt("Unable to get mck clk\n"));
data->irq = irq;
at91sam926x_pit_common_init(data);
}
void __init at91sam926x_ioremap_pit(u32 addr)
{
if (of_have_populated_dt())
return;
pit_base_addr = ioremap(addr, 16);
if (!pit_base_addr)
panic(pr_fmt("Impossible to ioremap PIT\n"));
}

9
drivers/edac/Kconfig
View file

@ -376,4 +376,13 @@ config EDAC_OCTEON_PCI
Support for error detection and correction on the
Cavium Octeon family of SOCs.
config EDAC_ALTERA_MC
tristate "Altera SDRAM Memory Controller EDAC"
depends on EDAC_MM_EDAC && ARCH_SOCFPGA
help
Support for error detection and correction on the
Altera SDRAM memory controller. Note that the
preloader must initialize the SDRAM before loading
the kernel.
endif # EDAC

2
drivers/edac/Makefile
View file

@ -65,3 +65,5 @@ obj-$(CONFIG_EDAC_OCTEON_PC) += octeon_edac-pc.o
obj-$(CONFIG_EDAC_OCTEON_L2C) += octeon_edac-l2c.o
obj-$(CONFIG_EDAC_OCTEON_LMC) += octeon_edac-lmc.o
obj-$(CONFIG_EDAC_OCTEON_PCI) += octeon_edac-pci.o
obj-$(CONFIG_EDAC_ALTERA_MC) += altera_edac.o

410
drivers/edac/altera_edac.c Normal file
View file

@ -0,0 +1,410 @@
/*
* Copyright Altera Corporation (C) 2014. All rights reserved.
* Copyright 2011-2012 Calxeda, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*
* Adapted from the highbank_mc_edac driver.
*/
#include <linux/ctype.h>
#include <linux/edac.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/types.h>
#include <linux/uaccess.h>
#include "edac_core.h"
#include "edac_module.h"
#define EDAC_MOD_STR "altera_edac"
#define EDAC_VERSION "1"
/* SDRAM Controller CtrlCfg Register */
#define CTLCFG_OFST 0x00
/* SDRAM Controller CtrlCfg Register Bit Masks */
#define CTLCFG_ECC_EN 0x400
#define CTLCFG_ECC_CORR_EN 0x800
#define CTLCFG_GEN_SB_ERR 0x2000
#define CTLCFG_GEN_DB_ERR 0x4000
#define CTLCFG_ECC_AUTO_EN (CTLCFG_ECC_EN | \
CTLCFG_ECC_CORR_EN)
/* SDRAM Controller Address Width Register */
#define DRAMADDRW_OFST 0x2C
/* SDRAM Controller Address Widths Field Register */
#define DRAMADDRW_COLBIT_MASK 0x001F
#define DRAMADDRW_COLBIT_SHIFT 0
#define DRAMADDRW_ROWBIT_MASK 0x03E0
#define DRAMADDRW_ROWBIT_SHIFT 5
#define DRAMADDRW_BANKBIT_MASK 0x1C00
#define DRAMADDRW_BANKBIT_SHIFT 10
#define DRAMADDRW_CSBIT_MASK 0xE000
#define DRAMADDRW_CSBIT_SHIFT 13
/* SDRAM Controller Interface Data Width Register */
#define DRAMIFWIDTH_OFST 0x30
/* SDRAM Controller Interface Data Width Defines */
#define DRAMIFWIDTH_16B_ECC 24
#define DRAMIFWIDTH_32B_ECC 40
/* SDRAM Controller DRAM Status Register */
#define DRAMSTS_OFST 0x38
/* SDRAM Controller DRAM Status Register Bit Masks */
#define DRAMSTS_SBEERR 0x04
#define DRAMSTS_DBEERR 0x08
#define DRAMSTS_CORR_DROP 0x10
/* SDRAM Controller DRAM IRQ Register */
#define DRAMINTR_OFST 0x3C
/* SDRAM Controller DRAM IRQ Register Bit Masks */
#define DRAMINTR_INTREN 0x01
#define DRAMINTR_SBEMASK 0x02
#define DRAMINTR_DBEMASK 0x04
#define DRAMINTR_CORRDROPMASK 0x08
#define DRAMINTR_INTRCLR 0x10
/* SDRAM Controller Single Bit Error Count Register */
#define SBECOUNT_OFST 0x40
/* SDRAM Controller Single Bit Error Count Register Bit Masks */
#define SBECOUNT_MASK 0x0F
/* SDRAM Controller Double Bit Error Count Register */
#define DBECOUNT_OFST 0x44
/* SDRAM Controller Double Bit Error Count Register Bit Masks */
#define DBECOUNT_MASK 0x0F
/* SDRAM Controller ECC Error Address Register */
#define ERRADDR_OFST 0x48
/* SDRAM Controller ECC Error Address Register Bit Masks */
#define ERRADDR_MASK 0xFFFFFFFF
/* Altera SDRAM Memory Controller data */
struct altr_sdram_mc_data {
struct regmap *mc_vbase;
};
static irqreturn_t altr_sdram_mc_err_handler(int irq, void *dev_id)
{
struct mem_ctl_info *mci = dev_id;
struct altr_sdram_mc_data *drvdata = mci->pvt_info;
u32 status, err_count, err_addr;
/* Error Address is shared by both SBE & DBE */
regmap_read(drvdata->mc_vbase, ERRADDR_OFST, &err_addr);
regmap_read(drvdata->mc_vbase, DRAMSTS_OFST, &status);
if (status & DRAMSTS_DBEERR) {
regmap_read(drvdata->mc_vbase, DBECOUNT_OFST, &err_count);
panic("\nEDAC: [%d Uncorrectable errors @ 0x%08X]\n",
err_count, err_addr);
}
if (status & DRAMSTS_SBEERR) {
regmap_read(drvdata->mc_vbase, SBECOUNT_OFST, &err_count);
edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, err_count,
err_addr >> PAGE_SHIFT,
err_addr & ~PAGE_MASK, 0,
0, 0, -1, mci->ctl_name, "");
}
regmap_write(drvdata->mc_vbase, DRAMINTR_OFST,
(DRAMINTR_INTRCLR | DRAMINTR_INTREN));
return IRQ_HANDLED;
}
#ifdef CONFIG_EDAC_DEBUG
static ssize_t altr_sdr_mc_err_inject_write(struct file *file,
const char __user *data,
size_t count, loff_t *ppos)
{
struct mem_ctl_info *mci = file->private_data;
struct altr_sdram_mc_data *drvdata = mci->pvt_info;
u32 *ptemp;
dma_addr_t dma_handle;
u32 reg, read_reg;
ptemp = dma_alloc_coherent(mci->pdev, 16, &dma_handle, GFP_KERNEL);
if (!ptemp) {
dma_free_coherent(mci->pdev, 16, ptemp, dma_handle);
edac_printk(KERN_ERR, EDAC_MC,
"Inject: Buffer Allocation error\n");
return -ENOMEM;
}
regmap_read(drvdata->mc_vbase, CTLCFG_OFST, &read_reg);
read_reg &= ~(CTLCFG_GEN_SB_ERR | CTLCFG_GEN_DB_ERR);
/* Error are injected by writing a word while the SBE or DBE
* bit in the CTLCFG register is set. Reading the word will
* trigger the SBE or DBE error and the corresponding IRQ.
*/
if (count == 3) {
edac_printk(KERN_ALERT, EDAC_MC,
"Inject Double bit error\n");
regmap_write(drvdata->mc_vbase, CTLCFG_OFST,
(read_reg | CTLCFG_GEN_DB_ERR));
} else {
edac_printk(KERN_ALERT, EDAC_MC,
"Inject Single bit error\n");
regmap_write(drvdata->mc_vbase, CTLCFG_OFST,
(read_reg | CTLCFG_GEN_SB_ERR));
}
ptemp[0] = 0x5A5A5A5A;
ptemp[1] = 0xA5A5A5A5;
/* Clear the error injection bits */
regmap_write(drvdata->mc_vbase, CTLCFG_OFST, read_reg);
/* Ensure it has been written out */
wmb();
/*
* To trigger the error, we need to read the data back
* (the data was written with errors above).
* The ACCESS_ONCE macros and printk are used to prevent the
* the compiler optimizing these reads out.
*/
reg = ACCESS_ONCE(ptemp[0]);
read_reg = ACCESS_ONCE(ptemp[1]);
/* Force Read */
rmb();
edac_printk(KERN_ALERT, EDAC_MC, "Read Data [0x%X, 0x%X]\n",
reg, read_reg);
dma_free_coherent(mci->pdev, 16, ptemp, dma_handle);
return count;
}
static const struct file_operations altr_sdr_mc_debug_inject_fops = {
.open = simple_open,
.write = altr_sdr_mc_err_inject_write,
.llseek = generic_file_llseek,
};
static void altr_sdr_mc_create_debugfs_nodes(struct mem_ctl_info *mci)
{
if (mci->debugfs)
debugfs_create_file("inject_ctrl", S_IWUSR, mci->debugfs, mci,
&altr_sdr_mc_debug_inject_fops);
}
#else
static void altr_sdr_mc_create_debugfs_nodes(struct mem_ctl_info *mci)
{}
#endif
/* Get total memory size in bytes */
static u32 altr_sdram_get_total_mem_size(struct regmap *mc_vbase)
{
u32 size, read_reg, row, bank, col, cs, width;
if (regmap_read(mc_vbase, DRAMADDRW_OFST, &read_reg) < 0)
return 0;
if (regmap_read(mc_vbase, DRAMIFWIDTH_OFST, &width) < 0)
return 0;
col = (read_reg & DRAMADDRW_COLBIT_MASK) >>
DRAMADDRW_COLBIT_SHIFT;
row = (read_reg & DRAMADDRW_ROWBIT_MASK) >>
DRAMADDRW_ROWBIT_SHIFT;
bank = (read_reg & DRAMADDRW_BANKBIT_MASK) >>
DRAMADDRW_BANKBIT_SHIFT;
cs = (read_reg & DRAMADDRW_CSBIT_MASK) >>
DRAMADDRW_CSBIT_SHIFT;
/* Correct for ECC as its not addressible */
if (width == DRAMIFWIDTH_32B_ECC)
width = 32;
if (width == DRAMIFWIDTH_16B_ECC)
width = 16;
/* calculate the SDRAM size base on this info */
size = 1 << (row + bank + col);
size = size * cs * (width / 8);
return size;
}
static int altr_sdram_probe(struct platform_device *pdev)
{
struct edac_mc_layer layers[2];
struct mem_ctl_info *mci;
struct altr_sdram_mc_data *drvdata;
struct regmap *mc_vbase;
struct dimm_info *dimm;
u32 read_reg, mem_size;
int irq;
int res = 0;
/* Validate the SDRAM controller has ECC enabled */
/* Grab the register range from the sdr controller in device tree */
mc_vbase = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
"altr,sdr-syscon");
if (IS_ERR(mc_vbase)) {
edac_printk(KERN_ERR, EDAC_MC,
"regmap for altr,sdr-syscon lookup failed.\n");
return -ENODEV;
}
if (regmap_read(mc_vbase, CTLCFG_OFST, &read_reg) ||
((read_reg & CTLCFG_ECC_AUTO_EN) != CTLCFG_ECC_AUTO_EN)) {
edac_printk(KERN_ERR, EDAC_MC,
"No ECC/ECC disabled [0x%08X]\n", read_reg);
return -ENODEV;
}
/* Grab memory size from device tree. */
mem_size = altr_sdram_get_total_mem_size(mc_vbase);
if (!mem_size) {
edac_printk(KERN_ERR, EDAC_MC,
"Unable to calculate memory size\n");
return -ENODEV;
}
/* Ensure the SDRAM Interrupt is disabled and cleared */
if (regmap_write(mc_vbase, DRAMINTR_OFST, DRAMINTR_INTRCLR)) {
edac_printk(KERN_ERR, EDAC_MC,
"Error clearing SDRAM ECC IRQ\n");
return -ENODEV;
}
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
edac_printk(KERN_ERR, EDAC_MC,
"No irq %d in DT\n", irq);
return -ENODEV;
}
layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
layers[0].size = 1;
layers[0].is_virt_csrow = true;
layers[1].type = EDAC_MC_LAYER_CHANNEL;
layers[1].size = 1;
layers[1].is_virt_csrow = false;
mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers,
sizeof(struct altr_sdram_mc_data));
if (!mci)
return -ENOMEM;
mci->pdev = &pdev->dev;
drvdata = mci->pvt_info;
drvdata->mc_vbase = mc_vbase;
platform_set_drvdata(pdev, mci);
if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
res = -ENOMEM;
goto free;
}
mci->mtype_cap = MEM_FLAG_DDR3;
mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED;
mci->edac_cap = EDAC_FLAG_SECDED;
mci->mod_name = EDAC_MOD_STR;
mci->mod_ver = EDAC_VERSION;
mci->ctl_name = dev_name(&pdev->dev);
mci->scrub_mode = SCRUB_SW_SRC;
mci->dev_name = dev_name(&pdev->dev);
dimm = *mci->dimms;
dimm->nr_pages = ((mem_size - 1) >> PAGE_SHIFT) + 1;
dimm->grain = 8;
dimm->dtype = DEV_X8;
dimm->mtype = MEM_DDR3;
dimm->edac_mode = EDAC_SECDED;
res = edac_mc_add_mc(mci);
if (res < 0)
goto err;
res = devm_request_irq(&pdev->dev, irq, altr_sdram_mc_err_handler,
0, dev_name(&pdev->dev), mci);
if (res < 0) {
edac_mc_printk(mci, KERN_ERR,
"Unable to request irq %d\n", irq);
res = -ENODEV;
goto err2;
}
if (regmap_write(drvdata->mc_vbase, DRAMINTR_OFST,
(DRAMINTR_INTRCLR | DRAMINTR_INTREN))) {
edac_mc_printk(mci, KERN_ERR,
"Error enabling SDRAM ECC IRQ\n");
res = -ENODEV;
goto err2;
}
altr_sdr_mc_create_debugfs_nodes(mci);
devres_close_group(&pdev->dev, NULL);
return 0;
err2:
edac_mc_del_mc(&pdev->dev);
err:
devres_release_group(&pdev->dev, NULL);
free:
edac_mc_free(mci);
edac_printk(KERN_ERR, EDAC_MC,
"EDAC Probe Failed; Error %d\n", res);
return res;
}
static int altr_sdram_remove(struct platform_device *pdev)
{
struct mem_ctl_info *mci = platform_get_drvdata(pdev);
edac_mc_del_mc(&pdev->dev);
edac_mc_free(mci);
platform_set_drvdata(pdev, NULL);
return 0;
}
static const struct of_device_id altr_sdram_ctrl_of_match[] = {
{ .compatible = "altr,sdram-edac", },
{},
};
MODULE_DEVICE_TABLE(of, altr_sdram_ctrl_of_match);
static struct platform_driver altr_sdram_edac_driver = {
.probe = altr_sdram_probe,
.remove = altr_sdram_remove,
.driver = {
.name = "altr_sdram_edac",
.of_match_table = altr_sdram_ctrl_of_match,
},
};
module_platform_driver(altr_sdram_edac_driver);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Thor Thayer");
MODULE_DESCRIPTION("EDAC Driver for Altera SDRAM Controller");

5
drivers/irqchip/Kconfig
View file

@ -75,6 +75,11 @@ config OR1K_PIC
bool
select IRQ_DOMAIN
config OMAP_IRQCHIP
bool
select GENERIC_IRQ_CHIP
select IRQ_DOMAIN
config ORION_IRQCHIP
bool
select IRQ_DOMAIN

1
drivers/irqchip/Makefile
View file

@ -13,6 +13,7 @@ obj-$(CONFIG_ARCH_MOXART) += irq-moxart.o
obj-$(CONFIG_CLPS711X_IRQCHIP) += irq-clps711x.o
obj-$(CONFIG_OR1K_PIC) += irq-or1k-pic.o
obj-$(CONFIG_ORION_IRQCHIP) += irq-orion.o
obj-$(CONFIG_OMAP_IRQCHIP) += irq-omap-intc.o
obj-$(CONFIG_ARCH_SUNXI) += irq-sun4i.o
obj-$(CONFIG_ARCH_SUNXI) += irq-sunxi-nmi.o
obj-$(CONFIG_ARCH_SPEAR3XX) += spear-shirq.o

403
drivers/irqchip/irq-omap-intc.c Normal file
View file

@ -0,0 +1,403 @@
/*
* linux/arch/arm/mach-omap2/irq.c
*
* Interrupt handler for OMAP2 boards.
*
* Copyright (C) 2005 Nokia Corporation
* Author: Paul Mundt <paul.mundt@nokia.com>
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <asm/exception.h>
#include <linux/irqdomain.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include "irqchip.h"
/* Define these here for now until we drop all board-files */
#define OMAP24XX_IC_BASE 0x480fe000
#define OMAP34XX_IC_BASE 0x48200000
/* selected INTC register offsets */
#define INTC_REVISION 0x0000
#define INTC_SYSCONFIG 0x0010
#define INTC_SYSSTATUS 0x0014
#define INTC_SIR 0x0040
#define INTC_CONTROL 0x0048
#define INTC_PROTECTION 0x004C
#define INTC_IDLE 0x0050
#define INTC_THRESHOLD 0x0068
#define INTC_MIR0 0x0084
#define INTC_MIR_CLEAR0 0x0088
#define INTC_MIR_SET0 0x008c
#define INTC_PENDING_IRQ0 0x0098
#define INTC_PENDING_IRQ1 0x00b8
#define INTC_PENDING_IRQ2 0x00d8
#define INTC_PENDING_IRQ3 0x00f8
#define INTC_ILR0 0x0100
#define ACTIVEIRQ_MASK 0x7f /* omap2/3 active interrupt bits */
#define INTCPS_NR_ILR_REGS 128
#define INTCPS_NR_MIR_REGS 4
#define INTC_IDLE_FUNCIDLE (1 << 0)
#define INTC_IDLE_TURBO (1 << 1)
#define INTC_PROTECTION_ENABLE (1 << 0)
struct omap_intc_regs {
u32 sysconfig;
u32 protection;
u32 idle;
u32 threshold;
u32 ilr[INTCPS_NR_ILR_REGS];
u32 mir[INTCPS_NR_MIR_REGS];
};
static struct omap_intc_regs intc_context;
static struct irq_domain *domain;
static void __iomem *omap_irq_base;
static int omap_nr_pending = 3;
static int omap_nr_irqs = 96;
static void intc_writel(u32 reg, u32 val)
{
writel_relaxed(val, omap_irq_base + reg);
}
static u32 intc_readl(u32 reg)
{
return readl_relaxed(omap_irq_base + reg);
}
void omap_intc_save_context(void)
{
int i;
intc_context.sysconfig =
intc_readl(INTC_SYSCONFIG);
intc_context.protection =
intc_readl(INTC_PROTECTION);
intc_context.idle =
intc_readl(INTC_IDLE);
intc_context.threshold =
intc_readl(INTC_THRESHOLD);
for (i = 0; i < omap_nr_irqs; i++)
intc_context.ilr[i] =
intc_readl((INTC_ILR0 + 0x4 * i));
for (i = 0; i < INTCPS_NR_MIR_REGS; i++)
intc_context.mir[i] =
intc_readl(INTC_MIR0 + (0x20 * i));
}
void omap_intc_restore_context(void)
{
int i;
intc_writel(INTC_SYSCONFIG, intc_context.sysconfig);
intc_writel(INTC_PROTECTION, intc_context.protection);
intc_writel(INTC_IDLE, intc_context.idle);
intc_writel(INTC_THRESHOLD, intc_context.threshold);
for (i = 0; i < omap_nr_irqs; i++)
intc_writel(INTC_ILR0 + 0x4 * i,
intc_context.ilr[i]);
for (i = 0; i < INTCPS_NR_MIR_REGS; i++)
intc_writel(INTC_MIR0 + 0x20 * i,
intc_context.mir[i]);
/* MIRs are saved and restore with other PRCM registers */
}
void omap3_intc_prepare_idle(void)
{
/*
* Disable autoidle as it can stall interrupt controller,
* cf. errata ID i540 for 3430 (all revisions up to 3.1.x)
*/
intc_writel(INTC_SYSCONFIG, 0);
intc_writel(INTC_IDLE, INTC_IDLE_TURBO);
}
void omap3_intc_resume_idle(void)
{
/* Re-enable autoidle */
intc_writel(INTC_SYSCONFIG, 1);
intc_writel(INTC_IDLE, 0);
}
/* XXX: FIQ and additional INTC support (only MPU at the moment) */
static void omap_ack_irq(struct irq_data *d)
{
intc_writel(INTC_CONTROL, 0x1);
}
static void omap_mask_ack_irq(struct irq_data *d)
{
irq_gc_mask_disable_reg(d);
omap_ack_irq(d);
}
static void __init omap_irq_soft_reset(void)
{
unsigned long tmp;
tmp = intc_readl(INTC_REVISION) & 0xff;
pr_info("IRQ: Found an INTC at 0x%p (revision %ld.%ld) with %d interrupts\n",
omap_irq_base, tmp >> 4, tmp & 0xf, omap_nr_irqs);
tmp = intc_readl(INTC_SYSCONFIG);
tmp |= 1 << 1; /* soft reset */
intc_writel(INTC_SYSCONFIG, tmp);
while (!(intc_readl(INTC_SYSSTATUS) & 0x1))
/* Wait for reset to complete */;
/* Enable autoidle */
intc_writel(INTC_SYSCONFIG, 1 << 0);
}
int omap_irq_pending(void)
{
int i;
for (i = 0; i < omap_nr_pending; i++)
if (intc_readl(INTC_PENDING_IRQ0 + (0x20 * i)))
return 1;
return 0;
}
void omap3_intc_suspend(void)
{
/* A pending interrupt would prevent OMAP from entering suspend */
omap_ack_irq(NULL);
}
static int __init omap_alloc_gc_of(struct irq_domain *d, void __iomem *base)
{
int ret;
int i;
ret = irq_alloc_domain_generic_chips(d, 32, 1, "INTC",
handle_level_irq, IRQ_NOREQUEST | IRQ_NOPROBE,
IRQ_LEVEL, 0);
if (ret) {
pr_warn("Failed to allocate irq chips\n");
return ret;
}
for (i = 0; i < omap_nr_pending; i++) {
struct irq_chip_generic *gc;
struct irq_chip_type *ct;
gc = irq_get_domain_generic_chip(d, 32 * i);
gc->reg_base = base;
ct = gc->chip_types;
ct->type = IRQ_TYPE_LEVEL_MASK;
ct->handler = handle_level_irq;
ct->chip.irq_ack = omap_mask_ack_irq;
ct->chip.irq_mask = irq_gc_mask_disable_reg;
ct->chip.irq_unmask = irq_gc_unmask_enable_reg;
ct->chip.flags |= IRQCHIP_SKIP_SET_WAKE;
ct->regs.enable = INTC_MIR_CLEAR0 + 32 * i;
ct->regs.disable = INTC_MIR_SET0 + 32 * i;
}
return 0;
}
static void __init omap_alloc_gc_legacy(void __iomem *base,
unsigned int irq_start, unsigned int num)
{
struct irq_chip_generic *gc;
struct irq_chip_type *ct;
gc = irq_alloc_generic_chip("INTC", 1, irq_start, base,
handle_level_irq);
ct = gc->chip_types;
ct->chip.irq_ack = omap_mask_ack_irq;
ct->chip.irq_mask = irq_gc_mask_disable_reg;
ct->chip.irq_unmask = irq_gc_unmask_enable_reg;
ct->chip.flags |= IRQCHIP_SKIP_SET_WAKE;
ct->regs.enable = INTC_MIR_CLEAR0;
ct->regs.disable = INTC_MIR_SET0;
irq_setup_generic_chip(gc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE,
IRQ_NOREQUEST | IRQ_NOPROBE, 0);
}
static int __init omap_init_irq_of(struct device_node *node)
{
int ret;
omap_irq_base = of_iomap(node, 0);
if (WARN_ON(!omap_irq_base))
return -ENOMEM;
domain = irq_domain_add_linear(node, omap_nr_irqs,
&irq_generic_chip_ops, NULL);
omap_irq_soft_reset();
ret = omap_alloc_gc_of(domain, omap_irq_base);
if (ret < 0)
irq_domain_remove(domain);
return ret;
}
static int __init omap_init_irq_legacy(u32 base)
{
int j, irq_base;
omap_irq_base = ioremap(base, SZ_4K);
if (WARN_ON(!omap_irq_base))
return -ENOMEM;
irq_base = irq_alloc_descs(-1, 0, omap_nr_irqs, 0);
if (irq_base < 0) {
pr_warn("Couldn't allocate IRQ numbers\n");
irq_base = 0;
}
domain = irq_domain_add_legacy(NULL, omap_nr_irqs, irq_base, 0,
&irq_domain_simple_ops, NULL);
omap_irq_soft_reset();
for (j = 0; j < omap_nr_irqs; j += 32)
omap_alloc_gc_legacy(omap_irq_base + j, j + irq_base, 32);
return 0;
}
static void __init omap_irq_enable_protection(void)
{
u32 reg;
reg = intc_readl(INTC_PROTECTION);
reg |= INTC_PROTECTION_ENABLE;
intc_writel(INTC_PROTECTION, reg);
}
static int __init omap_init_irq(u32 base, struct device_node *node)
{
int ret;
if (node)
ret = omap_init_irq_of(node);
else
ret = omap_init_irq_legacy(base);
if (ret == 0)
omap_irq_enable_protection();
return ret;
}
static asmlinkage void __exception_irq_entry
omap_intc_handle_irq(struct pt_regs *regs)
{
u32 irqnr = 0;
int handled_irq = 0;
int i;
do {
for (i = 0; i < omap_nr_pending; i++) {
irqnr = intc_readl(INTC_PENDING_IRQ0 + (0x20 * i));
if (irqnr)
goto out;
}
out:
if (!irqnr)
break;
irqnr = intc_readl(INTC_SIR);
irqnr &= ACTIVEIRQ_MASK;
if (irqnr) {
irqnr = irq_find_mapping(domain, irqnr);
handle_IRQ(irqnr, regs);
handled_irq = 1;
}
} while (irqnr);
/*
* If an irq is masked or deasserted while active, we will
* keep ending up here with no irq handled. So remove it from
* the INTC with an ack.
*/
if (!handled_irq)
omap_ack_irq(NULL);
}
void __init omap2_init_irq(void)
{
omap_nr_irqs = 96;
omap_nr_pending = 3;
omap_init_irq(OMAP24XX_IC_BASE, NULL);
set_handle_irq(omap_intc_handle_irq);
}
void __init omap3_init_irq(void)
{
omap_nr_irqs = 96;
omap_nr_pending = 3;
omap_init_irq(OMAP34XX_IC_BASE, NULL);
set_handle_irq(omap_intc_handle_irq);
}
void __init ti81xx_init_irq(void)
{
omap_nr_irqs = 96;
omap_nr_pending = 4;
omap_init_irq(OMAP34XX_IC_BASE, NULL);
set_handle_irq(omap_intc_handle_irq);
}
static int __init intc_of_init(struct device_node *node,
struct device_node *parent)
{
int ret;
omap_nr_pending = 3;
omap_nr_irqs = 96;
if (WARN_ON(!node))
return -ENODEV;
if (of_device_is_compatible(node, "ti,am33xx-intc")) {
omap_nr_irqs = 128;
omap_nr_pending = 4;
}
ret = omap_init_irq(-1, of_node_get(node));
if (ret < 0)
return ret;
set_handle_irq(omap_intc_handle_irq);
return 0;
}
IRQCHIP_DECLARE(omap2_intc, "ti,omap2-intc", intc_of_init);
IRQCHIP_DECLARE(omap3_intc, "ti,omap3-intc", intc_of_init);
IRQCHIP_DECLARE(am33xx_intc, "ti,am33xx-intc", intc_of_init);

10
drivers/leds/Kconfig
View file

@ -478,6 +478,16 @@ config LEDS_BLINKM
This option enables support for the BlinkM RGB LED connected
through I2C. Say Y to enable support for the BlinkM LED.
config LEDS_SYSCON
bool "LED support for LEDs on system controllers"
depends on LEDS_CLASS=y
depends on MFD_SYSCON
depends on OF
help
This option enabled support for the LEDs on syscon type
devices. This will only work with device tree enabled
devices.
config LEDS_VERSATILE
tristate "LED support for the ARM Versatile and RealView"
depends on ARCH_REALVIEW || ARCH_VERSATILE

1
drivers/leds/Makefile
View file

@ -53,6 +53,7 @@ obj-$(CONFIG_LEDS_ASIC3) += leds-asic3.o
obj-$(CONFIG_LEDS_MAX8997) += leds-max8997.o
obj-$(CONFIG_LEDS_LM355x) += leds-lm355x.o
obj-$(CONFIG_LEDS_BLINKM) += leds-blinkm.o
obj-$(CONFIG_LEDS_SYSCON) += leds-syscon.o
obj-$(CONFIG_LEDS_VERSATILE) += leds-versatile.o
# LED SPI Drivers

166
drivers/leds/leds-syscon.c Normal file
View file

@ -0,0 +1,166 @@
/*
* Generic Syscon LEDs Driver
*
* Copyright (c) 2014, Linaro Limited
* Author: Linus Walleij <linus.walleij@linaro.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* This driver provides system reboot functionality for APM X-Gene SoC.
* For system shutdown, this is board specify. If a board designer
* implements GPIO shutdown, use the gpio-poweroff.c driver.
*/
#include <linux/io.h>
#include <linux/of_device.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/stat.h>
#include <linux/slab.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include <linux/leds.h>
/**
* struct syscon_led - state container for syscon based LEDs
* @cdev: LED class device for this LED
* @map: regmap to access the syscon device backing this LED
* @offset: the offset into the syscon regmap for the LED register
* @mask: the bit in the register corresponding to the LED
* @state: current state of the LED
*/
struct syscon_led {
struct led_classdev cdev;
struct regmap *map;
u32 offset;
u32 mask;
bool state;
};
static void syscon_led_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
struct syscon_led *sled =
container_of(led_cdev, struct syscon_led, cdev);
u32 val;
int ret;
if (value == LED_OFF) {
val = 0;
sled->state = false;
} else {
val = sled->mask;
sled->state = true;
}
ret = regmap_update_bits(sled->map, sled->offset, sled->mask, val);
if (ret < 0)
dev_err(sled->cdev.dev, "error updating LED status\n");
}
static const struct of_device_id syscon_match[] = {
{ .compatible = "syscon", },
{},
};
static int __init syscon_leds_init(void)
{
const struct of_device_id *devid;
struct device_node *np;
struct device_node *child;
struct regmap *map;
struct platform_device *pdev;
struct device *dev;
int ret;
np = of_find_matching_node_and_match(NULL, syscon_match,
&devid);
if (!np)
return -ENODEV;
map = syscon_node_to_regmap(np);
if (IS_ERR(map))
return PTR_ERR(map);
/*
* If the map is there, the device should be there, we allocate
* memory on the syscon device's behalf here.
*/
pdev = of_find_device_by_node(np);
if (!pdev)
return -ENODEV;
dev = &pdev->dev;
for_each_available_child_of_node(np, child) {
struct syscon_led *sled;
const char *state;
/* Only check for register-bit-leds */
if (of_property_match_string(child, "compatible",
"register-bit-led") < 0)
continue;
sled = devm_kzalloc(dev, sizeof(*sled), GFP_KERNEL);
if (!sled)
return -ENOMEM;
sled->map = map;
if (of_property_read_u32(child, "offset", &sled->offset))
return -EINVAL;
if (of_property_read_u32(child, "mask", &sled->mask))
return -EINVAL;
sled->cdev.name =
of_get_property(child, "label", NULL) ? : child->name;
sled->cdev.default_trigger =
of_get_property(child, "linux,default-trigger", NULL);
state = of_get_property(child, "default-state", NULL);
if (state) {
if (!strcmp(state, "keep")) {
u32 val;
ret = regmap_read(map, sled->offset, &val);
if (ret < 0)
return ret;
sled->state = !!(val & sled->mask);
} else if (!strcmp(state, "on")) {
sled->state = true;
ret = regmap_update_bits(map, sled->offset,
sled->mask,
sled->mask);
if (ret < 0)
return ret;
} else {
sled->state = false;
ret = regmap_update_bits(map, sled->offset,
sled->mask, 0);
if (ret < 0)
return ret;
}
}
sled->cdev.brightness_set = syscon_led_set;
ret = led_classdev_register(dev, &sled->cdev);
if (ret < 0)
return ret;
dev_info(dev, "registered LED %s\n", sled->cdev.name);
}
return 0;
}
device_initcall(syscon_leds_init);

156
drivers/mailbox/omap-mailbox.c
View file

@ -31,6 +31,7 @@
#include <linux/err.h>
#include <linux/notifier.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/platform_data/mailbox-omap.h>
@ -94,6 +95,18 @@ struct omap_mbox_device {
struct list_head elem;
};
struct omap_mbox_fifo_info {
int tx_id;
int tx_usr;
int tx_irq;
int rx_id;
int rx_usr;
int rx_irq;
const char *name;
};
struct omap_mbox {
const char *name;
int irq;
@ -587,24 +600,118 @@ static int omap_mbox_unregister(struct omap_mbox_device *mdev)
return 0;
}
static const struct of_device_id omap_mailbox_of_match[] = {
{
.compatible = "ti,omap2-mailbox",
.data = (void *)MBOX_INTR_CFG_TYPE1,
},
{
.compatible = "ti,omap3-mailbox",
.data = (void *)MBOX_INTR_CFG_TYPE1,
},
{
.compatible = "ti,omap4-mailbox",
.data = (void *)MBOX_INTR_CFG_TYPE2,
},
{
/* end */
},
};
MODULE_DEVICE_TABLE(of, omap_mailbox_of_match);
static int omap_mbox_probe(struct platform_device *pdev)
{
struct resource *mem;
int ret;
struct omap_mbox **list, *mbox, *mboxblk;
struct omap_mbox_pdata *pdata = pdev->dev.platform_data;
struct omap_mbox_dev_info *info;
struct omap_mbox_dev_info *info = NULL;
struct omap_mbox_fifo_info *finfo, *finfoblk;
struct omap_mbox_device *mdev;
struct omap_mbox_fifo *fifo;
u32 intr_type;
struct device_node *node = pdev->dev.of_node;
struct device_node *child;
const struct of_device_id *match;
u32 intr_type, info_count;
u32 num_users, num_fifos;
u32 tmp[3];
u32 l;
int i;
if (!pdata || !pdata->info_cnt || !pdata->info) {
if (!node && (!pdata || !pdata->info_cnt || !pdata->info)) {
pr_err("%s: platform not supported\n", __func__);
return -ENODEV;
}
if (node) {
match = of_match_device(omap_mailbox_of_match, &pdev->dev);
if (!match)
return -ENODEV;
intr_type = (u32)match->data;
if (of_property_read_u32(node, "ti,mbox-num-users",
&num_users))
return -ENODEV;
if (of_property_read_u32(node, "ti,mbox-num-fifos",
&num_fifos))
return -ENODEV;
info_count = of_get_available_child_count(node);
if (!info_count) {
dev_err(&pdev->dev, "no available mbox devices found\n");
return -ENODEV;
}
} else { /* non-DT device creation */
info_count = pdata->info_cnt;
info = pdata->info;
intr_type = pdata->intr_type;
num_users = pdata->num_users;
num_fifos = pdata->num_fifos;
}
finfoblk = devm_kzalloc(&pdev->dev, info_count * sizeof(*finfoblk),
GFP_KERNEL);
if (!finfoblk)
return -ENOMEM;
finfo = finfoblk;
child = NULL;
for (i = 0; i < info_count; i++, finfo++) {
if (node) {
child = of_get_next_available_child(node, child);
ret = of_property_read_u32_array(child, "ti,mbox-tx",
tmp, ARRAY_SIZE(tmp));
if (ret)
return ret;
finfo->tx_id = tmp[0];
finfo->tx_irq = tmp[1];
finfo->tx_usr = tmp[2];
ret = of_property_read_u32_array(child, "ti,mbox-rx",
tmp, ARRAY_SIZE(tmp));
if (ret)
return ret;
finfo->rx_id = tmp[0];
finfo->rx_irq = tmp[1];
finfo->rx_usr = tmp[2];
finfo->name = child->name;
} else {
finfo->tx_id = info->tx_id;
finfo->rx_id = info->rx_id;
finfo->tx_usr = info->usr_id;
finfo->tx_irq = info->irq_id;
finfo->rx_usr = info->usr_id;
finfo->rx_irq = info->irq_id;
finfo->name = info->name;
info++;
}
if (finfo->tx_id >= num_fifos || finfo->rx_id >= num_fifos ||
finfo->tx_usr >= num_users || finfo->rx_usr >= num_users)
return -EINVAL;
}
mdev = devm_kzalloc(&pdev->dev, sizeof(*mdev), GFP_KERNEL);
if (!mdev)
return -ENOMEM;
@ -615,41 +722,40 @@ static int omap_mbox_probe(struct platform_device *pdev)
return PTR_ERR(mdev->mbox_base);
/* allocate one extra for marking end of list */
list = devm_kzalloc(&pdev->dev, (pdata->info_cnt + 1) * sizeof(*list),
list = devm_kzalloc(&pdev->dev, (info_count + 1) * sizeof(*list),
GFP_KERNEL);
if (!list)
return -ENOMEM;
mboxblk = devm_kzalloc(&pdev->dev, pdata->info_cnt * sizeof(*mbox),
mboxblk = devm_kzalloc(&pdev->dev, info_count * sizeof(*mbox),
GFP_KERNEL);
if (!mboxblk)
return -ENOMEM;
info = pdata->info;
intr_type = pdata->intr_type;
mbox = mboxblk;
for (i = 0; i < pdata->info_cnt; i++, info++) {
finfo = finfoblk;
for (i = 0; i < info_count; i++, finfo++) {
fifo = &mbox->tx_fifo;
fifo->msg = MAILBOX_MESSAGE(info->tx_id);
fifo->fifo_stat = MAILBOX_FIFOSTATUS(info->tx_id);
fifo->intr_bit = MAILBOX_IRQ_NOTFULL(info->tx_id);
fifo->irqenable = MAILBOX_IRQENABLE(intr_type, info->usr_id);
fifo->irqstatus = MAILBOX_IRQSTATUS(intr_type, info->usr_id);
fifo->irqdisable = MAILBOX_IRQDISABLE(intr_type, info->usr_id);
fifo->msg = MAILBOX_MESSAGE(finfo->tx_id);
fifo->fifo_stat = MAILBOX_FIFOSTATUS(finfo->tx_id);
fifo->intr_bit = MAILBOX_IRQ_NOTFULL(finfo->tx_id);
fifo->irqenable = MAILBOX_IRQENABLE(intr_type, finfo->tx_usr);
fifo->irqstatus = MAILBOX_IRQSTATUS(intr_type, finfo->tx_usr);
fifo->irqdisable = MAILBOX_IRQDISABLE(intr_type, finfo->tx_usr);
fifo = &mbox->rx_fifo;
fifo->msg = MAILBOX_MESSAGE(info->rx_id);
fifo->msg_stat = MAILBOX_MSGSTATUS(info->rx_id);
fifo->intr_bit = MAILBOX_IRQ_NEWMSG(info->rx_id);
fifo->irqenable = MAILBOX_IRQENABLE(intr_type, info->usr_id);
fifo->irqstatus = MAILBOX_IRQSTATUS(intr_type, info->usr_id);
fifo->irqdisable = MAILBOX_IRQDISABLE(intr_type, info->usr_id);
fifo->msg = MAILBOX_MESSAGE(finfo->rx_id);
fifo->msg_stat = MAILBOX_MSGSTATUS(finfo->rx_id);
fifo->intr_bit = MAILBOX_IRQ_NEWMSG(finfo->rx_id);
fifo->irqenable = MAILBOX_IRQENABLE(intr_type, finfo->rx_usr);
fifo->irqstatus = MAILBOX_IRQSTATUS(intr_type, finfo->rx_usr);
fifo->irqdisable = MAILBOX_IRQDISABLE(intr_type, finfo->rx_usr);
mbox->intr_type = intr_type;
mbox->parent = mdev;
mbox->name = info->name;
mbox->irq = platform_get_irq(pdev, info->irq_id);
mbox->name = finfo->name;
mbox->irq = platform_get_irq(pdev, finfo->tx_irq);
if (mbox->irq < 0)
return mbox->irq;
list[i] = mbox++;
@ -657,8 +763,8 @@ static int omap_mbox_probe(struct platform_device *pdev)
mutex_init(&mdev->cfg_lock);
mdev->dev = &pdev->dev;
mdev->num_users = pdata->num_users;
mdev->num_fifos = pdata->num_fifos;
mdev->num_users = num_users;
mdev->num_fifos = num_fifos;
mdev->mboxes = list;
ret = omap_mbox_register(mdev);
if (ret)
@ -684,6 +790,7 @@ static int omap_mbox_probe(struct platform_device *pdev)
if (ret < 0)
goto unregister;
devm_kfree(&pdev->dev, finfoblk);
return 0;
unregister:
@ -708,6 +815,7 @@ static struct platform_driver omap_mbox_driver = {
.driver = {
.name = "omap-mailbox",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(omap_mailbox_of_match),
},
};

10
drivers/memory/Kconfig
View file

@ -7,6 +7,16 @@ menuconfig MEMORY
if MEMORY
config ATMEL_SDRAMC
bool "Atmel (Multi-port DDR-)SDRAM Controller"
default y
depends on ARCH_AT91 && OF
help
This driver is for Atmel SDRAM Controller or Atmel Multi-port
DDR-SDRAM Controller available on Atmel AT91SAM9 and SAMA5 SoCs.
Starting with the at91sam9g45, this controller supports SDR, DDR and
LP-DDR memories.
config TI_AEMIF
tristate "Texas Instruments AEMIF driver"
depends on (ARCH_DAVINCI || ARCH_KEYSTONE) && OF

1
drivers/memory/Makefile
View file

@ -5,6 +5,7 @@
ifeq ($(CONFIG_DDR),y)
obj-$(CONFIG_OF) += of_memory.o
endif
obj-$(CONFIG_ATMEL_SDRAMC) += atmel-sdramc.o
obj-$(CONFIG_TI_AEMIF) += ti-aemif.o
obj-$(CONFIG_TI_EMIF) += emif.o
obj-$(CONFIG_FSL_CORENET_CF) += fsl-corenet-cf.o

98
drivers/memory/atmel-sdramc.c Normal file
View file

@ -0,0 +1,98 @@
/*
* Atmel (Multi-port DDR-)SDRAM Controller driver
*
* Copyright (C) 2014 Atmel
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
struct at91_ramc_caps {
bool has_ddrck;
bool has_mpddr_clk;
};
static const struct at91_ramc_caps at91rm9200_caps = { };
static const struct at91_ramc_caps at91sam9g45_caps = {
.has_ddrck = 1,
.has_mpddr_clk = 0,
};
static const struct at91_ramc_caps sama5d3_caps = {
.has_ddrck = 1,
.has_mpddr_clk = 1,
};
static const struct of_device_id atmel_ramc_of_match[] = {
{ .compatible = "atmel,at91rm9200-sdramc", .data = &at91rm9200_caps, },
{ .compatible = "atmel,at91sam9260-sdramc", .data = &at91rm9200_caps, },
{ .compatible = "atmel,at91sam9g45-ddramc", .data = &at91sam9g45_caps, },
{ .compatible = "atmel,sama5d3-ddramc", .data = &sama5d3_caps, },
{},
};
MODULE_DEVICE_TABLE(of, atmel_ramc_of_match);
static int atmel_ramc_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
const struct at91_ramc_caps *caps;
struct clk *clk;
match = of_match_device(atmel_ramc_of_match, &pdev->dev);
caps = match->data;
if (caps->has_ddrck) {
clk = devm_clk_get(&pdev->dev, "ddrck");
if (IS_ERR(clk))
return PTR_ERR(clk);
clk_prepare_enable(clk);
}
if (caps->has_mpddr_clk) {
clk = devm_clk_get(&pdev->dev, "mpddr");
if (IS_ERR(clk)) {
pr_err("AT91 RAMC: couldn't get mpddr clock\n");
return PTR_ERR(clk);
}
clk_prepare_enable(clk);
}
return 0;
}
static struct platform_driver atmel_ramc_driver = {
.probe = atmel_ramc_probe,
.driver = {
.name = "atmel-ramc",
.owner = THIS_MODULE,
.of_match_table = atmel_ramc_of_match,
},
};
static int __init atmel_ramc_init(void)
{
return platform_driver_register(&atmel_ramc_driver);
}
module_init(atmel_ramc_init);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Alexandre Belloni <alexandre.belloni@free-electrons.com>");
MODULE_DESCRIPTION("Atmel (Multi-port DDR-)SDRAM Controller");

42
drivers/power/reset/Kconfig
View file

@ -6,15 +6,33 @@ menuconfig POWER_RESET
Say Y here to enable board reset and power off
if POWER_RESET
config POWER_RESET_AS3722
bool "ams AS3722 power-off driver"
depends on MFD_AS3722 && POWER_RESET
depends on MFD_AS3722
help
This driver supports turning off board via a ams AS3722 power-off.
config POWER_RESET_AT91_POWEROFF
bool "Atmel AT91 poweroff driver"
depends on ARCH_AT91
default SOC_AT91SAM9 || SOC_SAMA5
help
This driver supports poweroff for Atmel AT91SAM9 and SAMA5
SoCs
config POWER_RESET_AT91_RESET
bool "Atmel AT91 reset driver"
depends on ARCH_AT91
default SOC_AT91SAM9 || SOC_SAMA5
help
This driver supports restart for Atmel AT91SAM9 and SAMA5
SoCs
config POWER_RESET_AXXIA
bool "LSI Axxia reset driver"
depends on POWER_RESET && ARCH_AXXIA
depends on ARCH_AXXIA
help
This driver supports restart for Axxia SoC.
@ -33,7 +51,7 @@ config POWER_RESET_BRCMSTB
config POWER_RESET_GPIO
bool "GPIO power-off driver"
depends on OF_GPIO && POWER_RESET
depends on OF_GPIO
help
This driver supports turning off your board via a GPIO line.
If your board needs a GPIO high/low to power down, say Y and
@ -47,13 +65,13 @@ config POWER_RESET_HISI
config POWER_RESET_MSM
bool "Qualcomm MSM power-off driver"
depends on POWER_RESET && ARCH_QCOM
depends on ARCH_QCOM
help
Power off and restart support for Qualcomm boards.
config POWER_RESET_QNAP
bool "QNAP power-off driver"
depends on OF_GPIO && POWER_RESET && PLAT_ORION
depends on OF_GPIO && PLAT_ORION
help
This driver supports turning off QNAP NAS devices by sending
commands to the microcontroller which controls the main power.
@ -71,14 +89,22 @@ config POWER_RESET_RESTART
config POWER_RESET_SUN6I
bool "Allwinner A31 SoC reset driver"
depends on ARCH_SUNXI
depends on POWER_RESET
help
Reboot support for the Allwinner A31 SoCs.
config POWER_RESET_VERSATILE
bool "ARM Versatile family reboot driver"
depends on ARM
depends on MFD_SYSCON
depends on OF
help
Power off and restart support for ARM Versatile family of
reference boards.
config POWER_RESET_VEXPRESS
bool "ARM Versatile Express power-off and reset driver"
depends on ARM || ARM64
depends on POWER_RESET && VEXPRESS_CONFIG
depends on VEXPRESS_CONFIG
help
Power off and reset support for the ARM Ltd. Versatile
Express boards.
@ -86,7 +112,6 @@ config POWER_RESET_VEXPRESS
config POWER_RESET_XGENE
bool "APM SoC X-Gene reset driver"
depends on ARM64
depends on POWER_RESET
help
Reboot support for the APM SoC X-Gene Eval boards.
@ -97,3 +122,4 @@ config POWER_RESET_KEYSTONE
help
Reboot support for the KEYSTONE SoCs.
endif

3
drivers/power/reset/Makefile
View file

@ -1,4 +1,6 @@
obj-$(CONFIG_POWER_RESET_AS3722) += as3722-poweroff.o
obj-$(CONFIG_POWER_RESET_AT91_POWEROFF) += at91-poweroff.o
obj-$(CONFIG_POWER_RESET_AT91_RESET) += at91-reset.o
obj-$(CONFIG_POWER_RESET_AXXIA) += axxia-reset.o
obj-$(CONFIG_POWER_RESET_BRCMSTB) += brcmstb-reboot.o
obj-$(CONFIG_POWER_RESET_GPIO) += gpio-poweroff.o
@ -7,6 +9,7 @@ obj-$(CONFIG_POWER_RESET_MSM) += msm-poweroff.o
obj-$(CONFIG_POWER_RESET_QNAP) += qnap-poweroff.o
obj-$(CONFIG_POWER_RESET_RESTART) += restart-poweroff.o
obj-$(CONFIG_POWER_RESET_SUN6I) += sun6i-reboot.o
obj-$(CONFIG_POWER_RESET_VERSATILE) += arm-versatile-reboot.o
obj-$(CONFIG_POWER_RESET_VEXPRESS) += vexpress-poweroff.o
obj-$(CONFIG_POWER_RESET_XGENE) += xgene-reboot.o
obj-$(CONFIG_POWER_RESET_KEYSTONE) += keystone-reset.o

111
drivers/power/reset/arm-versatile-reboot.c Normal file
View file

@ -0,0 +1,111 @@
/*
* Copyright (C) 2014 Linaro Ltd.
*
* Author: Linus Walleij <linus.walleij@linaro.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2, as
* published by the Free Software Foundation.
*
*/
#include <linux/init.h>
#include <linux/mfd/syscon.h>
#include <linux/reboot.h>
#include <linux/regmap.h>
#include <linux/of.h>
#include <asm/system_misc.h>
#define REALVIEW_SYS_LOCK_OFFSET 0x20
#define REALVIEW_SYS_LOCK_VAL 0xA05F
#define REALVIEW_SYS_RESETCTL_OFFSET 0x40
/*
* We detect the different syscon types from the compatible strings.
*/
enum versatile_reboot {
REALVIEW_REBOOT_EB,
REALVIEW_REBOOT_PB1176,
REALVIEW_REBOOT_PB11MP,
REALVIEW_REBOOT_PBA8,
REALVIEW_REBOOT_PBX,
};
/* Pointer to the system controller */
static struct regmap *syscon_regmap;
static enum versatile_reboot versatile_reboot_type;
static const struct of_device_id versatile_reboot_of_match[] = {
{
.compatible = "arm,realview-eb-syscon",
.data = (void *)REALVIEW_REBOOT_EB,
},
{
.compatible = "arm,realview-pb1176-syscon",
.data = (void *)REALVIEW_REBOOT_PB1176,
},
{
.compatible = "arm,realview-pb11mp-syscon",
.data = (void *)REALVIEW_REBOOT_PB11MP,
},
{
.compatible = "arm,realview-pba8-syscon",
.data = (void *)REALVIEW_REBOOT_PBA8,
},
{
.compatible = "arm,realview-pbx-syscon",
.data = (void *)REALVIEW_REBOOT_PBX,
},
};
static void versatile_reboot(enum reboot_mode mode, const char *cmd)
{
/* Unlock the reset register */
regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET,
REALVIEW_SYS_LOCK_VAL);
/* Then hit reset on the different machines */
switch (versatile_reboot_type) {
case REALVIEW_REBOOT_EB:
regmap_write(syscon_regmap,
REALVIEW_SYS_RESETCTL_OFFSET, 0x0008);
break;
case REALVIEW_REBOOT_PB1176:
regmap_write(syscon_regmap,
REALVIEW_SYS_RESETCTL_OFFSET, 0x0100);
break;
case REALVIEW_REBOOT_PB11MP:
case REALVIEW_REBOOT_PBA8:
regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET,
0x0000);
regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET,
0x0004);
break;
case REALVIEW_REBOOT_PBX:
regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET,
0x00f0);
regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET,
0x00f4);
break;
}
dsb();
}
static int __init versatile_reboot_probe(void)
{
const struct of_device_id *reboot_id;
struct device_node *np;
np = of_find_matching_node_and_match(NULL, versatile_reboot_of_match,
&reboot_id);
if (!np)
return -ENODEV;
versatile_reboot_type = (enum versatile_reboot)reboot_id->data;
syscon_regmap = syscon_node_to_regmap(np);
if (IS_ERR(syscon_regmap))
return PTR_ERR(syscon_regmap);
arm_pm_restart = versatile_reboot;
pr_info("versatile reboot driver registered\n");
return 0;
}
device_initcall(versatile_reboot_probe);

156
drivers/power/reset/at91-poweroff.c Normal file
View file

@ -0,0 +1,156 @@
/*
* Atmel AT91 SAM9 SoCs reset code
*
* Copyright (C) 2007 Atmel Corporation.
* Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* Copyright (C) 2014 Free Electrons
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/printk.h>
#define AT91_SHDW_CR 0x00 /* Shut Down Control Register */
#define AT91_SHDW_SHDW BIT(0) /* Shut Down command */
#define AT91_SHDW_KEY (0xa5 << 24) /* KEY Password */
#define AT91_SHDW_MR 0x04 /* Shut Down Mode Register */
#define AT91_SHDW_WKMODE0 GENMASK(2, 0) /* Wake-up 0 Mode Selection */
#define AT91_SHDW_CPTWK0_MAX 0xf /* Maximum Counter On Wake Up 0 */
#define AT91_SHDW_CPTWK0 (AT91_SHDW_CPTWK0_MAX << 4) /* Counter On Wake Up 0 */
#define AT91_SHDW_CPTWK0_(x) ((x) << 4)
#define AT91_SHDW_RTTWKEN BIT(16) /* Real Time Timer Wake-up Enable */
#define AT91_SHDW_RTCWKEN BIT(17) /* Real Time Clock Wake-up Enable */
#define AT91_SHDW_SR 0x08 /* Shut Down Status Register */
#define AT91_SHDW_WAKEUP0 BIT(0) /* Wake-up 0 Status */
#define AT91_SHDW_RTTWK BIT(16) /* Real-time Timer Wake-up */
#define AT91_SHDW_RTCWK BIT(17) /* Real-time Clock Wake-up [SAM9RL] */
enum wakeup_type {
AT91_SHDW_WKMODE0_NONE = 0,
AT91_SHDW_WKMODE0_HIGH = 1,
AT91_SHDW_WKMODE0_LOW = 2,
AT91_SHDW_WKMODE0_ANYLEVEL = 3,
};
static const char *shdwc_wakeup_modes[] = {
[AT91_SHDW_WKMODE0_NONE] = "none",
[AT91_SHDW_WKMODE0_HIGH] = "high",
[AT91_SHDW_WKMODE0_LOW] = "low",
[AT91_SHDW_WKMODE0_ANYLEVEL] = "any",
};
static void __iomem *at91_shdwc_base;
static void __init at91_wakeup_status(void)
{
u32 reg = readl(at91_shdwc_base + AT91_SHDW_SR);
char *reason = "unknown";
/* Simple power-on, just bail out */
if (!reg)
return;
if (reg & AT91_SHDW_RTTWK)
reason = "RTT";
else if (reg & AT91_SHDW_RTCWK)
reason = "RTC";
pr_info("AT91: Wake-Up source: %s\n", reason);
}
static void at91_poweroff(void)
{
writel(AT91_SHDW_KEY | AT91_SHDW_SHDW, at91_shdwc_base + AT91_SHDW_CR);
}
const enum wakeup_type at91_poweroff_get_wakeup_mode(struct device_node *np)
{
const char *pm;
int err, i;
err = of_property_read_string(np, "atmel,wakeup-mode", &pm);
if (err < 0)
return AT91_SHDW_WKMODE0_ANYLEVEL;
for (i = 0; i < ARRAY_SIZE(shdwc_wakeup_modes); i++)
if (!strcasecmp(pm, shdwc_wakeup_modes[i]))
return i;
return -ENODEV;
}
static void at91_poweroff_dt_set_wakeup_mode(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
enum wakeup_type wakeup_mode;
u32 mode = 0, tmp;
wakeup_mode = at91_poweroff_get_wakeup_mode(np);
if (wakeup_mode < 0) {
dev_warn(&pdev->dev, "shdwc unknown wakeup mode\n");
return;
}
if (!of_property_read_u32(np, "atmel,wakeup-counter", &tmp)) {
if (tmp > AT91_SHDW_CPTWK0_MAX) {
dev_warn(&pdev->dev,
"shdwc wakeup counter 0x%x > 0x%x reduce it to 0x%x\n",
tmp, AT91_SHDW_CPTWK0_MAX, AT91_SHDW_CPTWK0_MAX);
tmp = AT91_SHDW_CPTWK0_MAX;
}
mode |= AT91_SHDW_CPTWK0_(tmp);
}
if (of_property_read_bool(np, "atmel,wakeup-rtc-timer"))
mode |= AT91_SHDW_RTCWKEN;
if (of_property_read_bool(np, "atmel,wakeup-rtt-timer"))
mode |= AT91_SHDW_RTTWKEN;
writel(wakeup_mode | mode, at91_shdwc_base + AT91_SHDW_MR);
}
static int at91_poweroff_probe(struct platform_device *pdev)
{
struct resource *res;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
at91_shdwc_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(at91_shdwc_base)) {
dev_err(&pdev->dev, "Could not map reset controller address\n");
return PTR_ERR(at91_shdwc_base);
}
at91_wakeup_status();
if (pdev->dev.of_node)
at91_poweroff_dt_set_wakeup_mode(pdev);
pm_power_off = at91_poweroff;
return 0;
}
static struct of_device_id at91_poweroff_of_match[] = {
{ .compatible = "atmel,at91sam9260-shdwc", },
{ .compatible = "atmel,at91sam9rl-shdwc", },
{ .compatible = "atmel,at91sam9x5-shdwc", },
{ /*sentinel*/ }
};
static struct platform_driver at91_poweroff_driver = {
.probe = at91_poweroff_probe,
.driver = {
.name = "at91-poweroff",
.of_match_table = at91_poweroff_of_match,
},
};
module_platform_driver(at91_poweroff_driver);

252
drivers/power/reset/at91-reset.c Normal file
View file

@ -0,0 +1,252 @@
/*
* Atmel AT91 SAM9 SoCs reset code
*
* Copyright (C) 2007 Atmel Corporation.
* Copyright (C) BitBox Ltd 2010
* Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcosoft.com>
* Copyright (C) 2014 Free Electrons
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/reboot.h>
#include <asm/system_misc.h>
#include <mach/at91sam9_ddrsdr.h>
#include <mach/at91sam9_sdramc.h>
#define AT91_RSTC_CR 0x00 /* Reset Controller Control Register */
#define AT91_RSTC_PROCRST BIT(0) /* Processor Reset */
#define AT91_RSTC_PERRST BIT(2) /* Peripheral Reset */
#define AT91_RSTC_EXTRST BIT(3) /* External Reset */
#define AT91_RSTC_KEY (0xa5 << 24) /* KEY Password */
#define AT91_RSTC_SR 0x04 /* Reset Controller Status Register */
#define AT91_RSTC_URSTS BIT(0) /* User Reset Status */
#define AT91_RSTC_RSTTYP GENMASK(10, 8) /* Reset Type */
#define AT91_RSTC_NRSTL BIT(16) /* NRST Pin Level */
#define AT91_RSTC_SRCMP BIT(17) /* Software Reset Command in Progress */
#define AT91_RSTC_MR 0x08 /* Reset Controller Mode Register */
#define AT91_RSTC_URSTEN BIT(0) /* User Reset Enable */
#define AT91_RSTC_URSTIEN BIT(4) /* User Reset Interrupt Enable */
#define AT91_RSTC_ERSTL GENMASK(11, 8) /* External Reset Length */
enum reset_type {
RESET_TYPE_GENERAL = 0,
RESET_TYPE_WAKEUP = 1,
RESET_TYPE_WATCHDOG = 2,
RESET_TYPE_SOFTWARE = 3,
RESET_TYPE_USER = 4,
};
static void __iomem *at91_ramc_base[2], *at91_rstc_base;
/*
* unless the SDRAM is cleanly shutdown before we hit the
* reset register it can be left driving the data bus and
* killing the chance of a subsequent boot from NAND
*/
static void at91sam9260_restart(enum reboot_mode mode, const char *cmd)
{
asm volatile(
/* Align to cache lines */
".balign 32\n\t"
/* Disable SDRAM accesses */
"str %2, [%0, #" __stringify(AT91_SDRAMC_TR) "]\n\t"
/* Power down SDRAM */
"str %3, [%0, #" __stringify(AT91_SDRAMC_LPR) "]\n\t"
/* Reset CPU */
"str %4, [%1, #" __stringify(AT91_RSTC_CR) "]\n\t"
"b .\n\t"
:
: "r" (at91_ramc_base[0]),
"r" (at91_rstc_base),
"r" (1),
"r" (AT91_SDRAMC_LPCB_POWER_DOWN),
"r" (AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST));
}
static void at91sam9g45_restart(enum reboot_mode mode, const char *cmd)
{
asm volatile(
/*
* Test wether we have a second RAM controller to care
* about.
*
* First, test that we can dereference the virtual address.
*/
"cmp %1, #0\n\t"
"beq 1f\n\t"
/* Then, test that the RAM controller is enabled */
"ldr r0, [%1]\n\t"
"cmp r0, #0\n\t"
/* Align to cache lines */
".balign 32\n\t"
/* Disable SDRAM0 accesses */
"1: str %3, [%0, #" __stringify(AT91_DDRSDRC_RTR) "]\n\t"
/* Power down SDRAM0 */
" str %4, [%0, #" __stringify(AT91_DDRSDRC_RTR) "]\n\t"
/* Disable SDRAM1 accesses */
" strne %3, [%1, #" __stringify(AT91_DDRSDRC_RTR) "]\n\t"
/* Power down SDRAM1 */
" strne %4, [%1, #" __stringify(AT91_DDRSDRC_RTR) "]\n\t"
/* Reset CPU */
" str %5, [%2, #" __stringify(AT91_RSTC_CR) "]\n\t"
" b .\n\t"
:
: "r" (at91_ramc_base[0]),
"r" (at91_ramc_base[1]),
"r" (at91_rstc_base),
"r" (1),
"r" (AT91_DDRSDRC_LPCB_POWER_DOWN),
"r" (AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST)
: "r0");
}
static void __init at91_reset_status(struct platform_device *pdev)
{
u32 reg = readl(at91_rstc_base + AT91_RSTC_SR);
char *reason;
switch ((reg & AT91_RSTC_RSTTYP) >> 8) {
case RESET_TYPE_GENERAL:
reason = "general reset";
break;
case RESET_TYPE_WAKEUP:
reason = "wakeup";
break;
case RESET_TYPE_WATCHDOG:
reason = "watchdog reset";
break;
case RESET_TYPE_SOFTWARE:
reason = "software reset";
break;
case RESET_TYPE_USER:
reason = "user reset";
break;
default:
reason = "unknown reset";
break;
}
pr_info("AT91: Starting after %s\n", reason);
}
static struct of_device_id at91_ramc_of_match[] = {
{ .compatible = "atmel,at91sam9260-sdramc", },
{ .compatible = "atmel,at91sam9g45-ddramc", },
{ .compatible = "atmel,sama5d3-ddramc", },
{ /* sentinel */ }
};
static struct of_device_id at91_reset_of_match[] = {
{ .compatible = "atmel,at91sam9260-rstc", .data = at91sam9260_restart },
{ .compatible = "atmel,at91sam9g45-rstc", .data = at91sam9g45_restart },
{ /* sentinel */ }
};
static int at91_reset_of_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
struct device_node *np;
int idx = 0;
at91_rstc_base = of_iomap(pdev->dev.of_node, 0);
if (!at91_rstc_base) {
dev_err(&pdev->dev, "Could not map reset controller address\n");
return -ENODEV;
}
for_each_matching_node(np, at91_ramc_of_match) {
at91_ramc_base[idx] = of_iomap(np, 0);
if (!at91_ramc_base[idx]) {
dev_err(&pdev->dev, "Could not map ram controller address\n");
return -ENODEV;
}
idx++;
}
match = of_match_node(at91_reset_of_match, pdev->dev.of_node);
arm_pm_restart = match->data;
return 0;
}
static int at91_reset_platform_probe(struct platform_device *pdev)
{
const struct platform_device_id *match;
struct resource *res;
int idx = 0;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
at91_rstc_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(at91_rstc_base)) {
dev_err(&pdev->dev, "Could not map reset controller address\n");
return PTR_ERR(at91_rstc_base);
}
for (idx = 0; idx < 2; idx++) {
res = platform_get_resource(pdev, IORESOURCE_MEM, idx + 1 );
at91_ramc_base[idx] = devm_ioremap(&pdev->dev, res->start,
resource_size(res));
if (IS_ERR(at91_ramc_base[idx])) {
dev_err(&pdev->dev, "Could not map ram controller address\n");
return PTR_ERR(at91_ramc_base[idx]);
}
}
match = platform_get_device_id(pdev);
arm_pm_restart = (void (*)(enum reboot_mode, const char*))
match->driver_data;
return 0;
}
static int at91_reset_probe(struct platform_device *pdev)
{
int ret;
if (pdev->dev.of_node)
ret = at91_reset_of_probe(pdev);
else
ret = at91_reset_platform_probe(pdev);
if (ret)
return ret;
at91_reset_status(pdev);
return 0;
}
static struct platform_device_id at91_reset_plat_match[] = {
{ "at91-sam9260-reset", (unsigned long)at91sam9260_restart },
{ "at91-sam9g45-reset", (unsigned long)at91sam9g45_restart },
{ /* sentinel */ }
};
static struct platform_driver at91_reset_driver = {
.probe = at91_reset_probe,
.driver = {
.name = "at91-reset",
.of_match_table = at91_reset_of_match,
},
.id_table = at91_reset_plat_match,
};
module_platform_driver(at91_reset_driver);

9
drivers/rtc/Kconfig
View file

@ -1175,9 +1175,16 @@ config RTC_DRV_SUN4V
If you say Y here you will get support for the Hypervisor
based RTC on SUN4V systems.
config RTC_DRV_SUN6I
tristate "Allwinner A31 RTC"
depends on MACH_SUN6I || MACH_SUN8I
help
If you say Y here you will get support for the RTC found on
Allwinner A31.
config RTC_DRV_SUNXI
tristate "Allwinner sun4i/sun7i RTC"
depends on ARCH_SUNXI
depends on MACH_SUN4I || MACH_SUN7I
help
If you say Y here you will get support for the RTC found on
Allwinner A10/A20.

1
drivers/rtc/Makefile
View file

@ -128,6 +128,7 @@ obj-$(CONFIG_RTC_DRV_STARFIRE) += rtc-starfire.o
obj-$(CONFIG_RTC_DRV_STK17TA8) += rtc-stk17ta8.o
obj-$(CONFIG_RTC_DRV_STMP) += rtc-stmp3xxx.o
obj-$(CONFIG_RTC_DRV_SUN4V) += rtc-sun4v.o
obj-$(CONFIG_RTC_DRV_SUN6I) += rtc-sun6i.o
obj-$(CONFIG_RTC_DRV_SUNXI) += rtc-sunxi.o
obj-$(CONFIG_RTC_DRV_TEGRA) += rtc-tegra.o
obj-$(CONFIG_RTC_DRV_TEST) += rtc-test.o

447
drivers/rtc/rtc-sun6i.c Normal file
View file

@ -0,0 +1,447 @@
/*
* An RTC driver for Allwinner A31/A23
*
* Copyright (c) 2014, Chen-Yu Tsai <wens@csie.org>
*
* based on rtc-sunxi.c
*
* An RTC driver for Allwinner A10/A20
*
* Copyright (c) 2013, Carlo Caione <carlo.caione@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/rtc.h>
#include <linux/types.h>
/* Control register */
#define SUN6I_LOSC_CTRL 0x0000
#define SUN6I_LOSC_CTRL_ALM_DHMS_ACC BIT(9)
#define SUN6I_LOSC_CTRL_RTC_HMS_ACC BIT(8)
#define SUN6I_LOSC_CTRL_RTC_YMD_ACC BIT(7)
#define SUN6I_LOSC_CTRL_ACC_MASK GENMASK(9, 7)
/* RTC */
#define SUN6I_RTC_YMD 0x0010
#define SUN6I_RTC_HMS 0x0014
/* Alarm 0 (counter) */
#define SUN6I_ALRM_COUNTER 0x0020
#define SUN6I_ALRM_CUR_VAL 0x0024
#define SUN6I_ALRM_EN 0x0028
#define SUN6I_ALRM_EN_CNT_EN BIT(0)
#define SUN6I_ALRM_IRQ_EN 0x002c
#define SUN6I_ALRM_IRQ_EN_CNT_IRQ_EN BIT(0)
#define SUN6I_ALRM_IRQ_STA 0x0030
#define SUN6I_ALRM_IRQ_STA_CNT_IRQ_PEND BIT(0)
/* Alarm 1 (wall clock) */
#define SUN6I_ALRM1_EN 0x0044
#define SUN6I_ALRM1_IRQ_EN 0x0048
#define SUN6I_ALRM1_IRQ_STA 0x004c
#define SUN6I_ALRM1_IRQ_STA_WEEK_IRQ_PEND BIT(0)
/* Alarm config */
#define SUN6I_ALARM_CONFIG 0x0050
#define SUN6I_ALARM_CONFIG_WAKEUP BIT(0)
/*
* Get date values
*/
#define SUN6I_DATE_GET_DAY_VALUE(x) ((x) & 0x0000001f)
#define SUN6I_DATE_GET_MON_VALUE(x) (((x) & 0x00000f00) >> 8)
#define SUN6I_DATE_GET_YEAR_VALUE(x) (((x) & 0x003f0000) >> 16)
#define SUN6I_LEAP_GET_VALUE(x) (((x) & 0x00400000) >> 22)
/*
* Get time values
*/
#define SUN6I_TIME_GET_SEC_VALUE(x) ((x) & 0x0000003f)
#define SUN6I_TIME_GET_MIN_VALUE(x) (((x) & 0x00003f00) >> 8)
#define SUN6I_TIME_GET_HOUR_VALUE(x) (((x) & 0x001f0000) >> 16)
/*
* Set date values
*/
#define SUN6I_DATE_SET_DAY_VALUE(x) ((x) & 0x0000001f)
#define SUN6I_DATE_SET_MON_VALUE(x) ((x) << 8 & 0x00000f00)
#define SUN6I_DATE_SET_YEAR_VALUE(x) ((x) << 16 & 0x003f0000)
#define SUN6I_LEAP_SET_VALUE(x) ((x) << 22 & 0x00400000)
/*
* Set time values
*/
#define SUN6I_TIME_SET_SEC_VALUE(x) ((x) & 0x0000003f)
#define SUN6I_TIME_SET_MIN_VALUE(x) ((x) << 8 & 0x00003f00)
#define SUN6I_TIME_SET_HOUR_VALUE(x) ((x) << 16 & 0x001f0000)
/*
* The year parameter passed to the driver is usually an offset relative to
* the year 1900. This macro is used to convert this offset to another one
* relative to the minimum year allowed by the hardware.
*
* The year range is 1970 - 2033. This range is selected to match Allwinner's
* driver, even though it is somewhat limited.
*/
#define SUN6I_YEAR_MIN 1970
#define SUN6I_YEAR_MAX 2033
#define SUN6I_YEAR_OFF (SUN6I_YEAR_MIN - 1900)
struct sun6i_rtc_dev {
struct rtc_device *rtc;
struct device *dev;
void __iomem *base;
int irq;
unsigned long alarm;
};
static irqreturn_t sun6i_rtc_alarmirq(int irq, void *id)
{
struct sun6i_rtc_dev *chip = (struct sun6i_rtc_dev *) id;
u32 val;
val = readl(chip->base + SUN6I_ALRM_IRQ_STA);
if (val & SUN6I_ALRM_IRQ_STA_CNT_IRQ_PEND) {
val |= SUN6I_ALRM_IRQ_STA_CNT_IRQ_PEND;
writel(val, chip->base + SUN6I_ALRM_IRQ_STA);
rtc_update_irq(chip->rtc, 1, RTC_AF | RTC_IRQF);
return IRQ_HANDLED;
}
return IRQ_NONE;
}
static void sun6i_rtc_setaie(int to, struct sun6i_rtc_dev *chip)
{
u32 alrm_val = 0;
u32 alrm_irq_val = 0;
u32 alrm_wake_val = 0;
if (to) {
alrm_val = SUN6I_ALRM_EN_CNT_EN;
alrm_irq_val = SUN6I_ALRM_IRQ_EN_CNT_IRQ_EN;
alrm_wake_val = SUN6I_ALARM_CONFIG_WAKEUP;
} else {
writel(SUN6I_ALRM_IRQ_STA_CNT_IRQ_PEND,
chip->base + SUN6I_ALRM_IRQ_STA);
}
writel(alrm_val, chip->base + SUN6I_ALRM_EN);
writel(alrm_irq_val, chip->base + SUN6I_ALRM_IRQ_EN);
writel(alrm_wake_val, chip->base + SUN6I_ALARM_CONFIG);
}
static int sun6i_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
{
struct sun6i_rtc_dev *chip = dev_get_drvdata(dev);
u32 date, time;
/*
* read again in case it changes
*/
do {
date = readl(chip->base + SUN6I_RTC_YMD);
time = readl(chip->base + SUN6I_RTC_HMS);
} while ((date != readl(chip->base + SUN6I_RTC_YMD)) ||
(time != readl(chip->base + SUN6I_RTC_HMS)));
rtc_tm->tm_sec = SUN6I_TIME_GET_SEC_VALUE(time);
rtc_tm->tm_min = SUN6I_TIME_GET_MIN_VALUE(time);
rtc_tm->tm_hour = SUN6I_TIME_GET_HOUR_VALUE(time);
rtc_tm->tm_mday = SUN6I_DATE_GET_DAY_VALUE(date);
rtc_tm->tm_mon = SUN6I_DATE_GET_MON_VALUE(date);
rtc_tm->tm_year = SUN6I_DATE_GET_YEAR_VALUE(date);
rtc_tm->tm_mon -= 1;
/*
* switch from (data_year->min)-relative offset to
* a (1900)-relative one
*/
rtc_tm->tm_year += SUN6I_YEAR_OFF;
return rtc_valid_tm(rtc_tm);
}
static int sun6i_rtc_getalarm(struct device *dev, struct rtc_wkalrm *wkalrm)
{
struct sun6i_rtc_dev *chip = dev_get_drvdata(dev);
u32 alrm_st;
u32 alrm_en;
alrm_en = readl(chip->base + SUN6I_ALRM_IRQ_EN);
alrm_st = readl(chip->base + SUN6I_ALRM_IRQ_STA);
wkalrm->enabled = !!(alrm_en & SUN6I_ALRM_EN_CNT_EN);
wkalrm->pending = !!(alrm_st & SUN6I_ALRM_EN_CNT_EN);
rtc_time_to_tm(chip->alarm, &wkalrm->time);
return 0;
}
static int sun6i_rtc_setalarm(struct device *dev, struct rtc_wkalrm *wkalrm)
{
struct sun6i_rtc_dev *chip = dev_get_drvdata(dev);
struct rtc_time *alrm_tm = &wkalrm->time;
struct rtc_time tm_now;
unsigned long time_now = 0;
unsigned long time_set = 0;
unsigned long time_gap = 0;
int ret = 0;
ret = sun6i_rtc_gettime(dev, &tm_now);
if (ret < 0) {
dev_err(dev, "Error in getting time\n");
return -EINVAL;
}
rtc_tm_to_time(alrm_tm, &time_set);
rtc_tm_to_time(&tm_now, &time_now);
if (time_set <= time_now) {
dev_err(dev, "Date to set in the past\n");
return -EINVAL;
}
time_gap = time_set - time_now;
if (time_gap > U32_MAX) {
dev_err(dev, "Date too far in the future\n");
return -EINVAL;
}
sun6i_rtc_setaie(0, chip);
writel(0, chip->base + SUN6I_ALRM_COUNTER);
usleep_range(100, 300);
writel(time_gap, chip->base + SUN6I_ALRM_COUNTER);
chip->alarm = time_set;
sun6i_rtc_setaie(wkalrm->enabled, chip);
return 0;
}
static int sun6i_rtc_wait(struct sun6i_rtc_dev *chip, int offset,
unsigned int mask, unsigned int ms_timeout)
{
const unsigned long timeout = jiffies + msecs_to_jiffies(ms_timeout);
u32 reg;
do {
reg = readl(chip->base + offset);
reg &= mask;
if (!reg)
return 0;
} while (time_before(jiffies, timeout));
return -ETIMEDOUT;
}
static int sun6i_rtc_settime(struct device *dev, struct rtc_time *rtc_tm)
{
struct sun6i_rtc_dev *chip = dev_get_drvdata(dev);
u32 date = 0;
u32 time = 0;
int year;
year = rtc_tm->tm_year + 1900;
if (year < SUN6I_YEAR_MIN || year > SUN6I_YEAR_MAX) {
dev_err(dev, "rtc only supports year in range %d - %d\n",
SUN6I_YEAR_MIN, SUN6I_YEAR_MAX);
return -EINVAL;
}
rtc_tm->tm_year -= SUN6I_YEAR_OFF;
rtc_tm->tm_mon += 1;
date = SUN6I_DATE_SET_DAY_VALUE(rtc_tm->tm_mday) |
SUN6I_DATE_SET_MON_VALUE(rtc_tm->tm_mon) |
SUN6I_DATE_SET_YEAR_VALUE(rtc_tm->tm_year);
if (is_leap_year(year))
date |= SUN6I_LEAP_SET_VALUE(1);
time = SUN6I_TIME_SET_SEC_VALUE(rtc_tm->tm_sec) |
SUN6I_TIME_SET_MIN_VALUE(rtc_tm->tm_min) |
SUN6I_TIME_SET_HOUR_VALUE(rtc_tm->tm_hour);
/* Check whether registers are writable */
if (sun6i_rtc_wait(chip, SUN6I_LOSC_CTRL,
SUN6I_LOSC_CTRL_ACC_MASK, 50)) {
dev_err(dev, "rtc is still busy.\n");
return -EBUSY;
}
writel(time, chip->base + SUN6I_RTC_HMS);
/*
* After writing the RTC HH-MM-SS register, the
* SUN6I_LOSC_CTRL_RTC_HMS_ACC bit is set and it will not
* be cleared until the real writing operation is finished
*/
if (sun6i_rtc_wait(chip, SUN6I_LOSC_CTRL,
SUN6I_LOSC_CTRL_RTC_HMS_ACC, 50)) {
dev_err(dev, "Failed to set rtc time.\n");
return -ETIMEDOUT;
}
writel(date, chip->base + SUN6I_RTC_YMD);
/*
* After writing the RTC YY-MM-DD register, the
* SUN6I_LOSC_CTRL_RTC_YMD_ACC bit is set and it will not
* be cleared until the real writing operation is finished
*/
if (sun6i_rtc_wait(chip, SUN6I_LOSC_CTRL,
SUN6I_LOSC_CTRL_RTC_YMD_ACC, 50)) {
dev_err(dev, "Failed to set rtc time.\n");
return -ETIMEDOUT;
}
return 0;
}
static int sun6i_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
struct sun6i_rtc_dev *chip = dev_get_drvdata(dev);
if (!enabled)
sun6i_rtc_setaie(enabled, chip);
return 0;
}
static const struct rtc_class_ops sun6i_rtc_ops = {
.read_time = sun6i_rtc_gettime,
.set_time = sun6i_rtc_settime,
.read_alarm = sun6i_rtc_getalarm,
.set_alarm = sun6i_rtc_setalarm,
.alarm_irq_enable = sun6i_rtc_alarm_irq_enable
};
static int sun6i_rtc_probe(struct platform_device *pdev)
{
struct sun6i_rtc_dev *chip;
struct resource *res;
int ret;
chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
if (!chip)
return -ENOMEM;
platform_set_drvdata(pdev, chip);
chip->dev = &pdev->dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
chip->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(chip->base))
return PTR_ERR(chip->base);
chip->irq = platform_get_irq(pdev, 0);
if (chip->irq < 0) {
dev_err(&pdev->dev, "No IRQ resource\n");
return chip->irq;
}
ret = devm_request_irq(&pdev->dev, chip->irq, sun6i_rtc_alarmirq,
0, dev_name(&pdev->dev), chip);
if (ret) {
dev_err(&pdev->dev, "Could not request IRQ\n");
return ret;
}
/* clear the alarm counter value */
writel(0, chip->base + SUN6I_ALRM_COUNTER);
/* disable counter alarm */
writel(0, chip->base + SUN6I_ALRM_EN);
/* disable counter alarm interrupt */
writel(0, chip->base + SUN6I_ALRM_IRQ_EN);
/* disable week alarm */
writel(0, chip->base + SUN6I_ALRM1_EN);
/* disable week alarm interrupt */
writel(0, chip->base + SUN6I_ALRM1_IRQ_EN);
/* clear counter alarm pending interrupts */
writel(SUN6I_ALRM_IRQ_STA_CNT_IRQ_PEND,
chip->base + SUN6I_ALRM_IRQ_STA);
/* clear week alarm pending interrupts */
writel(SUN6I_ALRM1_IRQ_STA_WEEK_IRQ_PEND,
chip->base + SUN6I_ALRM1_IRQ_STA);
/* disable alarm wakeup */
writel(0, chip->base + SUN6I_ALARM_CONFIG);
chip->rtc = rtc_device_register("rtc-sun6i", &pdev->dev,
&sun6i_rtc_ops, THIS_MODULE);
if (IS_ERR(chip->rtc)) {
dev_err(&pdev->dev, "unable to register device\n");
return PTR_ERR(chip->rtc);
}
dev_info(&pdev->dev, "RTC enabled\n");
return 0;
}
static int sun6i_rtc_remove(struct platform_device *pdev)
{
struct sun6i_rtc_dev *chip = platform_get_drvdata(pdev);
rtc_device_unregister(chip->rtc);
return 0;
}
static const struct of_device_id sun6i_rtc_dt_ids[] = {
{ .compatible = "allwinner,sun6i-a31-rtc" },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, sun6i_rtc_dt_ids);
static struct platform_driver sun6i_rtc_driver = {
.probe = sun6i_rtc_probe,
.remove = sun6i_rtc_remove,
.driver = {
.name = "sun6i-rtc",
.of_match_table = sun6i_rtc_dt_ids,
},
};
module_platform_driver(sun6i_rtc_driver);
MODULE_DESCRIPTION("sun6i RTC driver");
MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");
MODULE_LICENSE("GPL");

2
drivers/soc/Kconfig
View file

@ -1,5 +1,7 @@
menu "SOC (System On Chip) specific Drivers"
source "drivers/soc/qcom/Kconfig"
source "drivers/soc/ti/Kconfig"
source "drivers/soc/versatile/Kconfig"
endmenu

2
drivers/soc/Makefile
View file

@ -4,3 +4,5 @@
obj-$(CONFIG_ARCH_QCOM) += qcom/
obj-$(CONFIG_ARCH_TEGRA) += tegra/
obj-$(CONFIG_SOC_TI) += ti/
obj-$(CONFIG_PLAT_VERSATILE) += versatile/

31
drivers/soc/ti/Kconfig Normal file
View file

@ -0,0 +1,31 @@
#
# TI SOC drivers
#
menuconfig SOC_TI
bool "TI SOC drivers support"
if SOC_TI
config KEYSTONE_NAVIGATOR_QMSS
tristate "Keystone Queue Manager Sub System"
depends on ARCH_KEYSTONE
help
Say y here to support the Keystone multicore Navigator Queue
Manager support. The Queue Manager is a hardware module that
is responsible for accelerating management of the packet queues.
Packets are queued/de-queued by writing/reading descriptor address
to a particular memory mapped location in the Queue Manager module.
If unsure, say N.
config KEYSTONE_NAVIGATOR_DMA
tristate "TI Keystone Navigator Packet DMA support"
depends on ARCH_KEYSTONE
help
Say y tp enable support for the Keystone Navigator Packet DMA on
on Keystone family of devices. It sets up the dma channels for the
Queue Manager Sub System.
If unsure, say N.
endif # SOC_TI

5
drivers/soc/ti/Makefile Normal file
View file

@ -0,0 +1,5 @@
#
# TI Keystone SOC drivers
#
obj-$(CONFIG_KEYSTONE_NAVIGATOR_QMSS) += knav_qmss_queue.o knav_qmss_acc.o
obj-$(CONFIG_KEYSTONE_NAVIGATOR_DMA) += knav_dma.o

815
drivers/soc/ti/knav_dma.c Normal file
View file

@ -0,0 +1,815 @@
/*
* Copyright (C) 2014 Texas Instruments Incorporated
* Authors: Santosh Shilimkar <santosh.shilimkar@ti.com>
* Sandeep Nair <sandeep_n@ti.com>
* Cyril Chemparathy <cyril@ti.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/io.h>
#include <linux/sched.h>
#include <linux/module.h>
#include <linux/dma-direction.h>
#include <linux/interrupt.h>
#include <linux/pm_runtime.h>
#include <linux/of_dma.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/soc/ti/knav_dma.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#define REG_MASK 0xffffffff
#define DMA_LOOPBACK BIT(31)
#define DMA_ENABLE BIT(31)
#define DMA_TEARDOWN BIT(30)
#define DMA_TX_FILT_PSWORDS BIT(29)
#define DMA_TX_FILT_EINFO BIT(30)
#define DMA_TX_PRIO_SHIFT 0
#define DMA_RX_PRIO_SHIFT 16
#define DMA_PRIO_MASK GENMASK(3, 0)
#define DMA_PRIO_DEFAULT 0
#define DMA_RX_TIMEOUT_DEFAULT 17500 /* cycles */
#define DMA_RX_TIMEOUT_MASK GENMASK(16, 0)
#define DMA_RX_TIMEOUT_SHIFT 0
#define CHAN_HAS_EPIB BIT(30)
#define CHAN_HAS_PSINFO BIT(29)
#define CHAN_ERR_RETRY BIT(28)
#define CHAN_PSINFO_AT_SOP BIT(25)
#define CHAN_SOP_OFF_SHIFT 16
#define CHAN_SOP_OFF_MASK GENMASK(9, 0)
#define DESC_TYPE_SHIFT 26
#define DESC_TYPE_MASK GENMASK(2, 0)
/*
* QMGR & QNUM together make up 14 bits with QMGR as the 2 MSb's in the logical
* navigator cloud mapping scheme.
* using the 14bit physical queue numbers directly maps into this scheme.
*/
#define CHAN_QNUM_MASK GENMASK(14, 0)
#define DMA_MAX_QMS 4
#define DMA_TIMEOUT 1 /* msecs */
#define DMA_INVALID_ID 0xffff
struct reg_global {
u32 revision;
u32 perf_control;
u32 emulation_control;
u32 priority_control;
u32 qm_base_address[DMA_MAX_QMS];
};
struct reg_chan {
u32 control;
u32 mode;
u32 __rsvd[6];
};
struct reg_tx_sched {
u32 prio;
};
struct reg_rx_flow {
u32 control;
u32 tags;
u32 tag_sel;
u32 fdq_sel[2];
u32 thresh[3];
};
struct knav_dma_pool_device {
struct device *dev;
struct list_head list;
};
struct knav_dma_device {
bool loopback, enable_all;
unsigned tx_priority, rx_priority, rx_timeout;
unsigned logical_queue_managers;
unsigned qm_base_address[DMA_MAX_QMS];
struct reg_global __iomem *reg_global;
struct reg_chan __iomem *reg_tx_chan;
struct reg_rx_flow __iomem *reg_rx_flow;
struct reg_chan __iomem *reg_rx_chan;
struct reg_tx_sched __iomem *reg_tx_sched;
unsigned max_rx_chan, max_tx_chan;
unsigned max_rx_flow;
char name[32];
atomic_t ref_count;
struct list_head list;
struct list_head chan_list;
spinlock_t lock;
};
struct knav_dma_chan {
enum dma_transfer_direction direction;
struct knav_dma_device *dma;
atomic_t ref_count;
/* registers */
struct reg_chan __iomem *reg_chan;
struct reg_tx_sched __iomem *reg_tx_sched;
struct reg_rx_flow __iomem *reg_rx_flow;
/* configuration stuff */
unsigned channel, flow;
struct knav_dma_cfg cfg;
struct list_head list;
spinlock_t lock;
};
#define chan_number(ch) ((ch->direction == DMA_MEM_TO_DEV) ? \
ch->channel : ch->flow)
static struct knav_dma_pool_device *kdev;
static bool check_config(struct knav_dma_chan *chan, struct knav_dma_cfg *cfg)
{
if (!memcmp(&chan->cfg, cfg, sizeof(*cfg)))
return true;
else
return false;
}
static int chan_start(struct knav_dma_chan *chan,
struct knav_dma_cfg *cfg)
{
u32 v = 0;
spin_lock(&chan->lock);
if ((chan->direction == DMA_MEM_TO_DEV) && chan->reg_chan) {
if (cfg->u.tx.filt_pswords)
v |= DMA_TX_FILT_PSWORDS;
if (cfg->u.tx.filt_einfo)
v |= DMA_TX_FILT_EINFO;
writel_relaxed(v, &chan->reg_chan->mode);
writel_relaxed(DMA_ENABLE, &chan->reg_chan->control);
}
if (chan->reg_tx_sched)
writel_relaxed(cfg->u.tx.priority, &chan->reg_tx_sched->prio);
if (chan->reg_rx_flow) {
v = 0;
if (cfg->u.rx.einfo_present)
v |= CHAN_HAS_EPIB;
if (cfg->u.rx.psinfo_present)
v |= CHAN_HAS_PSINFO;
if (cfg->u.rx.err_mode == DMA_RETRY)
v |= CHAN_ERR_RETRY;
v |= (cfg->u.rx.desc_type & DESC_TYPE_MASK) << DESC_TYPE_SHIFT;
if (cfg->u.rx.psinfo_at_sop)
v |= CHAN_PSINFO_AT_SOP;
v |= (cfg->u.rx.sop_offset & CHAN_SOP_OFF_MASK)
<< CHAN_SOP_OFF_SHIFT;
v |= cfg->u.rx.dst_q & CHAN_QNUM_MASK;
writel_relaxed(v, &chan->reg_rx_flow->control);
writel_relaxed(0, &chan->reg_rx_flow->tags);
writel_relaxed(0, &chan->reg_rx_flow->tag_sel);
v = cfg->u.rx.fdq[0] << 16;
v |= cfg->u.rx.fdq[1] & CHAN_QNUM_MASK;
writel_relaxed(v, &chan->reg_rx_flow->fdq_sel[0]);
v = cfg->u.rx.fdq[2] << 16;
v |= cfg->u.rx.fdq[3] & CHAN_QNUM_MASK;
writel_relaxed(v, &chan->reg_rx_flow->fdq_sel[1]);
writel_relaxed(0, &chan->reg_rx_flow->thresh[0]);
writel_relaxed(0, &chan->reg_rx_flow->thresh[1]);
writel_relaxed(0, &chan->reg_rx_flow->thresh[2]);
}
/* Keep a copy of the cfg */
memcpy(&chan->cfg, cfg, sizeof(*cfg));
spin_unlock(&chan->lock);
return 0;
}
static int chan_teardown(struct knav_dma_chan *chan)
{
unsigned long end, value;
if (!chan->reg_chan)
return 0;
/* indicate teardown */
writel_relaxed(DMA_TEARDOWN, &chan->reg_chan->control);
/* wait for the dma to shut itself down */
end = jiffies + msecs_to_jiffies(DMA_TIMEOUT);
do {
value = readl_relaxed(&chan->reg_chan->control);
if ((value & DMA_ENABLE) == 0)
break;
} while (time_after(end, jiffies));
if (readl_relaxed(&chan->reg_chan->control) & DMA_ENABLE) {
dev_err(kdev->dev, "timeout waiting for teardown\n");
return -ETIMEDOUT;
}
return 0;
}
static void chan_stop(struct knav_dma_chan *chan)
{
spin_lock(&chan->lock);
if (chan->reg_rx_flow) {
/* first detach fdqs, starve out the flow */
writel_relaxed(0, &chan->reg_rx_flow->fdq_sel[0]);
writel_relaxed(0, &chan->reg_rx_flow->fdq_sel[1]);
writel_relaxed(0, &chan->reg_rx_flow->thresh[0]);
writel_relaxed(0, &chan->reg_rx_flow->thresh[1]);
writel_relaxed(0, &chan->reg_rx_flow->thresh[2]);
}
/* teardown the dma channel */
chan_teardown(chan);
/* then disconnect the completion side */
if (chan->reg_rx_flow) {
writel_relaxed(0, &chan->reg_rx_flow->control);
writel_relaxed(0, &chan->reg_rx_flow->tags);
writel_relaxed(0, &chan->reg_rx_flow->tag_sel);
}
memset(&chan->cfg, 0, sizeof(struct knav_dma_cfg));
spin_unlock(&chan->lock);
dev_dbg(kdev->dev, "channel stopped\n");
}
static void dma_hw_enable_all(struct knav_dma_device *dma)
{
int i;
for (i = 0; i < dma->max_tx_chan; i++) {
writel_relaxed(0, &dma->reg_tx_chan[i].mode);
writel_relaxed(DMA_ENABLE, &dma->reg_tx_chan[i].control);
}
}
static void knav_dma_hw_init(struct knav_dma_device *dma)
{
unsigned v;
int i;
spin_lock(&dma->lock);
v = dma->loopback ? DMA_LOOPBACK : 0;
writel_relaxed(v, &dma->reg_global->emulation_control);
v = readl_relaxed(&dma->reg_global->perf_control);
v |= ((dma->rx_timeout & DMA_RX_TIMEOUT_MASK) << DMA_RX_TIMEOUT_SHIFT);
writel_relaxed(v, &dma->reg_global->perf_control);
v = ((dma->tx_priority << DMA_TX_PRIO_SHIFT) |
(dma->rx_priority << DMA_RX_PRIO_SHIFT));
writel_relaxed(v, &dma->reg_global->priority_control);
/* Always enable all Rx channels. Rx paths are managed using flows */
for (i = 0; i < dma->max_rx_chan; i++)
writel_relaxed(DMA_ENABLE, &dma->reg_rx_chan[i].control);
for (i = 0; i < dma->logical_queue_managers; i++)
writel_relaxed(dma->qm_base_address[i],
&dma->reg_global->qm_base_address[i]);
spin_unlock(&dma->lock);
}
static void knav_dma_hw_destroy(struct knav_dma_device *dma)
{
int i;
unsigned v;
spin_lock(&dma->lock);
v = ~DMA_ENABLE & REG_MASK;
for (i = 0; i < dma->max_rx_chan; i++)
writel_relaxed(v, &dma->reg_rx_chan[i].control);
for (i = 0; i < dma->max_tx_chan; i++)
writel_relaxed(v, &dma->reg_tx_chan[i].control);
spin_unlock(&dma->lock);
}
static void dma_debug_show_channels(struct seq_file *s,
struct knav_dma_chan *chan)
{
int i;
seq_printf(s, "\t%s %d:\t",
((chan->direction == DMA_MEM_TO_DEV) ? "tx chan" : "rx flow"),
chan_number(chan));
if (chan->direction == DMA_MEM_TO_DEV) {
seq_printf(s, "einfo - %d, pswords - %d, priority - %d\n",
chan->cfg.u.tx.filt_einfo,
chan->cfg.u.tx.filt_pswords,
chan->cfg.u.tx.priority);
} else {
seq_printf(s, "einfo - %d, psinfo - %d, desc_type - %d\n",
chan->cfg.u.rx.einfo_present,
chan->cfg.u.rx.psinfo_present,
chan->cfg.u.rx.desc_type);
seq_printf(s, "\t\t\tdst_q: [%d], thresh: %d fdq: ",
chan->cfg.u.rx.dst_q,
chan->cfg.u.rx.thresh);
for (i = 0; i < KNAV_DMA_FDQ_PER_CHAN; i++)
seq_printf(s, "[%d]", chan->cfg.u.rx.fdq[i]);
seq_printf(s, "\n");
}
}
static void dma_debug_show_devices(struct seq_file *s,
struct knav_dma_device *dma)
{
struct knav_dma_chan *chan;
list_for_each_entry(chan, &dma->chan_list, list) {
if (atomic_read(&chan->ref_count))
dma_debug_show_channels(s, chan);
}
}
static int dma_debug_show(struct seq_file *s, void *v)
{
struct knav_dma_device *dma;
list_for_each_entry(dma, &kdev->list, list) {
if (atomic_read(&dma->ref_count)) {
seq_printf(s, "%s : max_tx_chan: (%d), max_rx_flows: (%d)\n",
dma->name, dma->max_tx_chan, dma->max_rx_flow);
dma_debug_show_devices(s, dma);
}
}
return 0;
}
static int knav_dma_debug_open(struct inode *inode, struct file *file)
{
return single_open(file, dma_debug_show, NULL);
}
static const struct file_operations knav_dma_debug_ops = {
.open = knav_dma_debug_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int of_channel_match_helper(struct device_node *np, const char *name,
const char **dma_instance)
{
struct of_phandle_args args;
struct device_node *dma_node;
int index;
dma_node = of_parse_phandle(np, "ti,navigator-dmas", 0);
if (!dma_node)
return -ENODEV;
*dma_instance = dma_node->name;
index = of_property_match_string(np, "ti,navigator-dma-names", name);
if (index < 0) {
dev_err(kdev->dev, "No 'ti,navigator-dma-names' propery\n");
return -ENODEV;
}
if (of_parse_phandle_with_fixed_args(np, "ti,navigator-dmas",
1, index, &args)) {
dev_err(kdev->dev, "Missing the pahndle args name %s\n", name);
return -ENODEV;
}
if (args.args[0] < 0) {
dev_err(kdev->dev, "Missing args for %s\n", name);
return -ENODEV;
}
return args.args[0];
}
/**
* knav_dma_open_channel() - try to setup an exclusive slave channel
* @dev: pointer to client device structure
* @name: slave channel name
* @config: dma configuration parameters
*
* Returns pointer to appropriate DMA channel on success or NULL.
*/
void *knav_dma_open_channel(struct device *dev, const char *name,
struct knav_dma_cfg *config)
{
struct knav_dma_chan *chan;
struct knav_dma_device *dma;
bool found = false;
int chan_num = -1;
const char *instance;
if (!kdev) {
pr_err("keystone-navigator-dma driver not registered\n");
return (void *)-EINVAL;
}
chan_num = of_channel_match_helper(dev->of_node, name, &instance);
if (chan_num < 0) {
dev_err(kdev->dev, "No DMA instace with name %s\n", name);
return (void *)-EINVAL;
}
dev_dbg(kdev->dev, "initializing %s channel %d from DMA %s\n",
config->direction == DMA_MEM_TO_DEV ? "transmit" :
config->direction == DMA_DEV_TO_MEM ? "receive" :
"unknown", chan_num, instance);
if (config->direction != DMA_MEM_TO_DEV &&
config->direction != DMA_DEV_TO_MEM) {
dev_err(kdev->dev, "bad direction\n");
return (void *)-EINVAL;
}
/* Look for correct dma instance */
list_for_each_entry(dma, &kdev->list, list) {
if (!strcmp(dma->name, instance)) {
found = true;
break;
}
}
if (!found) {
dev_err(kdev->dev, "No DMA instace with name %s\n", instance);
return (void *)-EINVAL;
}
/* Look for correct dma channel from dma instance */
found = false;
list_for_each_entry(chan, &dma->chan_list, list) {
if (config->direction == DMA_MEM_TO_DEV) {
if (chan->channel == chan_num) {
found = true;
break;
}
} else {
if (chan->flow == chan_num) {
found = true;
break;
}
}
}
if (!found) {
dev_err(kdev->dev, "channel %d is not in DMA %s\n",
chan_num, instance);
return (void *)-EINVAL;
}
if (atomic_read(&chan->ref_count) >= 1) {
if (!check_config(chan, config)) {
dev_err(kdev->dev, "channel %d config miss-match\n",
chan_num);
return (void *)-EINVAL;
}
}
if (atomic_inc_return(&chan->dma->ref_count) <= 1)
knav_dma_hw_init(chan->dma);
if (atomic_inc_return(&chan->ref_count) <= 1)
chan_start(chan, config);
dev_dbg(kdev->dev, "channel %d opened from DMA %s\n",
chan_num, instance);
return chan;
}
EXPORT_SYMBOL_GPL(knav_dma_open_channel);
/**
* knav_dma_close_channel() - Destroy a dma channel
*
* channel: dma channel handle
*
*/
void knav_dma_close_channel(void *channel)
{
struct knav_dma_chan *chan = channel;
if (!kdev) {
pr_err("keystone-navigator-dma driver not registered\n");
return;
}
if (atomic_dec_return(&chan->ref_count) <= 0)
chan_stop(chan);
if (atomic_dec_return(&chan->dma->ref_count) <= 0)
knav_dma_hw_destroy(chan->dma);
dev_dbg(kdev->dev, "channel %d or flow %d closed from DMA %s\n",
chan->channel, chan->flow, chan->dma->name);
}
EXPORT_SYMBOL_GPL(knav_dma_close_channel);
static void __iomem *pktdma_get_regs(struct knav_dma_device *dma,
struct device_node *node,
unsigned index, resource_size_t *_size)
{
struct device *dev = kdev->dev;
struct resource res;
void __iomem *regs;
int ret;
ret = of_address_to_resource(node, index, &res);
if (ret) {
dev_err(dev, "Can't translate of node(%s) address for index(%d)\n",
node->name, index);
return ERR_PTR(ret);
}
regs = devm_ioremap_resource(kdev->dev, &res);
if (IS_ERR(regs))
dev_err(dev, "Failed to map register base for index(%d) node(%s)\n",
index, node->name);
if (_size)
*_size = resource_size(&res);
return regs;
}
static int pktdma_init_rx_chan(struct knav_dma_chan *chan, u32 flow)
{
struct knav_dma_device *dma = chan->dma;
chan->flow = flow;
chan->reg_rx_flow = dma->reg_rx_flow + flow;
chan->channel = DMA_INVALID_ID;
dev_dbg(kdev->dev, "rx flow(%d) (%p)\n", chan->flow, chan->reg_rx_flow);
return 0;
}
static int pktdma_init_tx_chan(struct knav_dma_chan *chan, u32 channel)
{
struct knav_dma_device *dma = chan->dma;
chan->channel = channel;
chan->reg_chan = dma->reg_tx_chan + channel;
chan->reg_tx_sched = dma->reg_tx_sched + channel;
chan->flow = DMA_INVALID_ID;
dev_dbg(kdev->dev, "tx channel(%d) (%p)\n", chan->channel, chan->reg_chan);
return 0;
}
static int pktdma_init_chan(struct knav_dma_device *dma,
enum dma_transfer_direction dir,
unsigned chan_num)
{
struct device *dev = kdev->dev;
struct knav_dma_chan *chan;
int ret = -EINVAL;
chan = devm_kzalloc(dev, sizeof(*chan), GFP_KERNEL);
if (!chan)
return -ENOMEM;
INIT_LIST_HEAD(&chan->list);
chan->dma = dma;
chan->direction = DMA_NONE;
atomic_set(&chan->ref_count, 0);
spin_lock_init(&chan->lock);
if (dir == DMA_MEM_TO_DEV) {
chan->direction = dir;
ret = pktdma_init_tx_chan(chan, chan_num);
} else if (dir == DMA_DEV_TO_MEM) {
chan->direction = dir;
ret = pktdma_init_rx_chan(chan, chan_num);
} else {
dev_err(dev, "channel(%d) direction unknown\n", chan_num);
}
list_add_tail(&chan->list, &dma->chan_list);
return ret;
}
static int dma_init(struct device_node *cloud, struct device_node *dma_node)
{
unsigned max_tx_chan, max_rx_chan, max_rx_flow, max_tx_sched;
struct device_node *node = dma_node;
struct knav_dma_device *dma;
int ret, len, num_chan = 0;
resource_size_t size;
u32 timeout;
u32 i;
dma = devm_kzalloc(kdev->dev, sizeof(*dma), GFP_KERNEL);
if (!dma) {
dev_err(kdev->dev, "could not allocate driver mem\n");
return -ENOMEM;
}
INIT_LIST_HEAD(&dma->list);
INIT_LIST_HEAD(&dma->chan_list);
if (!of_find_property(cloud, "ti,navigator-cloud-address", &len)) {
dev_err(kdev->dev, "unspecified navigator cloud addresses\n");
return -ENODEV;
}
dma->logical_queue_managers = len / sizeof(u32);
if (dma->logical_queue_managers > DMA_MAX_QMS) {
dev_warn(kdev->dev, "too many queue mgrs(>%d) rest ignored\n",
dma->logical_queue_managers);
dma->logical_queue_managers = DMA_MAX_QMS;
}
ret = of_property_read_u32_array(cloud, "ti,navigator-cloud-address",
dma->qm_base_address,
dma->logical_queue_managers);
if (ret) {
dev_err(kdev->dev, "invalid navigator cloud addresses\n");
return -ENODEV;
}
dma->reg_global = pktdma_get_regs(dma, node, 0, &size);
if (!dma->reg_global)
return -ENODEV;
if (size < sizeof(struct reg_global)) {
dev_err(kdev->dev, "bad size %pa for global regs\n", &size);
return -ENODEV;
}
dma->reg_tx_chan = pktdma_get_regs(dma, node, 1, &size);
if (!dma->reg_tx_chan)
return -ENODEV;
max_tx_chan = size / sizeof(struct reg_chan);
dma->reg_rx_chan = pktdma_get_regs(dma, node, 2, &size);
if (!dma->reg_rx_chan)
return -ENODEV;
max_rx_chan = size / sizeof(struct reg_chan);
dma->reg_tx_sched = pktdma_get_regs(dma, node, 3, &size);
if (!dma->reg_tx_sched)
return -ENODEV;
max_tx_sched = size / sizeof(struct reg_tx_sched);
dma->reg_rx_flow = pktdma_get_regs(dma, node, 4, &size);
if (!dma->reg_rx_flow)
return -ENODEV;
max_rx_flow = size / sizeof(struct reg_rx_flow);
dma->rx_priority = DMA_PRIO_DEFAULT;
dma->tx_priority = DMA_PRIO_DEFAULT;
dma->enable_all = (of_get_property(node, "ti,enable-all", NULL) != NULL);
dma->loopback = (of_get_property(node, "ti,loop-back", NULL) != NULL);
ret = of_property_read_u32(node, "ti,rx-retry-timeout", &timeout);
if (ret < 0) {
dev_dbg(kdev->dev, "unspecified rx timeout using value %d\n",
DMA_RX_TIMEOUT_DEFAULT);
timeout = DMA_RX_TIMEOUT_DEFAULT;
}
dma->rx_timeout = timeout;
dma->max_rx_chan = max_rx_chan;
dma->max_rx_flow = max_rx_flow;
dma->max_tx_chan = min(max_tx_chan, max_tx_sched);
atomic_set(&dma->ref_count, 0);
strcpy(dma->name, node->name);
spin_lock_init(&dma->lock);
for (i = 0; i < dma->max_tx_chan; i++) {
if (pktdma_init_chan(dma, DMA_MEM_TO_DEV, i) >= 0)
num_chan++;
}
for (i = 0; i < dma->max_rx_flow; i++) {
if (pktdma_init_chan(dma, DMA_DEV_TO_MEM, i) >= 0)
num_chan++;
}
list_add_tail(&dma->list, &kdev->list);
/*
* For DSP software usecases or userpace transport software, setup all
* the DMA hardware resources.
*/
if (dma->enable_all) {
atomic_inc(&dma->ref_count);
knav_dma_hw_init(dma);
dma_hw_enable_all(dma);
}
dev_info(kdev->dev, "DMA %s registered %d logical channels, flows %d, tx chans: %d, rx chans: %d%s\n",
dma->name, num_chan, dma->max_rx_flow,
dma->max_tx_chan, dma->max_rx_chan,
dma->loopback ? ", loopback" : "");
return 0;
}
static int knav_dma_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *node = pdev->dev.of_node;
struct device_node *child;
int ret = 0;
if (!node) {
dev_err(&pdev->dev, "could not find device info\n");
return -EINVAL;
}
kdev = devm_kzalloc(dev,
sizeof(struct knav_dma_pool_device), GFP_KERNEL);
if (!kdev) {
dev_err(dev, "could not allocate driver mem\n");
return -ENOMEM;
}
kdev->dev = dev;
INIT_LIST_HEAD(&kdev->list);
pm_runtime_enable(kdev->dev);
ret = pm_runtime_get_sync(kdev->dev);
if (ret < 0) {
dev_err(kdev->dev, "unable to enable pktdma, err %d\n", ret);
return ret;
}
/* Initialise all packet dmas */
for_each_child_of_node(node, child) {
ret = dma_init(node, child);
if (ret) {
dev_err(&pdev->dev, "init failed with %d\n", ret);
break;
}
}
if (list_empty(&kdev->list)) {
dev_err(dev, "no valid dma instance\n");
return -ENODEV;
}
debugfs_create_file("knav_dma", S_IFREG | S_IRUGO, NULL, NULL,
&knav_dma_debug_ops);
return ret;
}
static int knav_dma_remove(struct platform_device *pdev)
{
struct knav_dma_device *dma;
list_for_each_entry(dma, &kdev->list, list) {
if (atomic_dec_return(&dma->ref_count) == 0)
knav_dma_hw_destroy(dma);
}
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
return 0;
}
static struct of_device_id of_match[] = {
{ .compatible = "ti,keystone-navigator-dma", },
{},
};
MODULE_DEVICE_TABLE(of, of_match);
static struct platform_driver knav_dma_driver = {
.probe = knav_dma_probe,
.remove = knav_dma_remove,
.driver = {
.name = "keystone-navigator-dma",
.owner = THIS_MODULE,
.of_match_table = of_match,
},
};
module_platform_driver(knav_dma_driver);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("TI Keystone Navigator Packet DMA driver");
MODULE_AUTHOR("Sandeep Nair <sandeep_n@ti.com>");
MODULE_AUTHOR("Santosh Shilimkar <santosh.shilimkar@ti.com>");

386
drivers/soc/ti/knav_qmss.h Normal file
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/*
* Keystone Navigator QMSS driver internal header
*
* Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
* Author: Sandeep Nair <sandeep_n@ti.com>
* Cyril Chemparathy <cyril@ti.com>
* Santosh Shilimkar <santosh.shilimkar@ti.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#ifndef __KNAV_QMSS_H__
#define __KNAV_QMSS_H__
#define THRESH_GTE BIT(7)
#define THRESH_LT 0
#define PDSP_CTRL_PC_MASK 0xffff0000
#define PDSP_CTRL_SOFT_RESET BIT(0)
#define PDSP_CTRL_ENABLE BIT(1)
#define PDSP_CTRL_RUNNING BIT(15)
#define ACC_MAX_CHANNEL 48
#define ACC_DEFAULT_PERIOD 25 /* usecs */
#define ACC_CHANNEL_INT_BASE 2
#define ACC_LIST_ENTRY_TYPE 1
#define ACC_LIST_ENTRY_WORDS (1 << ACC_LIST_ENTRY_TYPE)
#define ACC_LIST_ENTRY_QUEUE_IDX 0
#define ACC_LIST_ENTRY_DESC_IDX (ACC_LIST_ENTRY_WORDS - 1)
#define ACC_CMD_DISABLE_CHANNEL 0x80
#define ACC_CMD_ENABLE_CHANNEL 0x81
#define ACC_CFG_MULTI_QUEUE BIT(21)
#define ACC_INTD_OFFSET_EOI (0x0010)
#define ACC_INTD_OFFSET_COUNT(ch) (0x0300 + 4 * (ch))
#define ACC_INTD_OFFSET_STATUS(ch) (0x0200 + 4 * ((ch) / 32))
#define RANGE_MAX_IRQS 64
#define ACC_DESCS_MAX SZ_1K
#define ACC_DESCS_MASK (ACC_DESCS_MAX - 1)
#define DESC_SIZE_MASK 0xful
#define DESC_PTR_MASK (~DESC_SIZE_MASK)
#define KNAV_NAME_SIZE 32
enum knav_acc_result {
ACC_RET_IDLE,
ACC_RET_SUCCESS,
ACC_RET_INVALID_COMMAND,
ACC_RET_INVALID_CHANNEL,
ACC_RET_INACTIVE_CHANNEL,
ACC_RET_ACTIVE_CHANNEL,
ACC_RET_INVALID_QUEUE,
ACC_RET_INVALID_RET,
};
struct knav_reg_config {
u32 revision;
u32 __pad1;
u32 divert;
u32 link_ram_base0;
u32 link_ram_size0;
u32 link_ram_base1;
u32 __pad2[2];
u32 starvation[0];
};
struct knav_reg_region {
u32 base;
u32 start_index;
u32 size_count;
u32 __pad;
};
struct knav_reg_pdsp_regs {
u32 control;
u32 status;
u32 cycle_count;
u32 stall_count;
};
struct knav_reg_acc_command {
u32 command;
u32 queue_mask;
u32 list_phys;
u32 queue_num;
u32 timer_config;
};
struct knav_link_ram_block {
dma_addr_t phys;
void *virt;
size_t size;
};
struct knav_acc_info {
u32 pdsp_id;
u32 start_channel;
u32 list_entries;
u32 pacing_mode;
u32 timer_count;
int mem_size;
int list_size;
struct knav_pdsp_info *pdsp;
};
struct knav_acc_channel {
u32 channel;
u32 list_index;
u32 open_mask;
u32 *list_cpu[2];
dma_addr_t list_dma[2];
char name[KNAV_NAME_SIZE];
atomic_t retrigger_count;
};
struct knav_pdsp_info {
const char *name;
struct knav_reg_pdsp_regs __iomem *regs;
union {
void __iomem *command;
struct knav_reg_acc_command __iomem *acc_command;
u32 __iomem *qos_command;
};
void __iomem *intd;
u32 __iomem *iram;
const char *firmware;
u32 id;
struct list_head list;
};
struct knav_qmgr_info {
unsigned start_queue;
unsigned num_queues;
struct knav_reg_config __iomem *reg_config;
struct knav_reg_region __iomem *reg_region;
struct knav_reg_queue __iomem *reg_push, *reg_pop, *reg_peek;
void __iomem *reg_status;
struct list_head list;
};
#define KNAV_NUM_LINKRAM 2
/**
* struct knav_queue_stats: queue statistics
* pushes: number of push operations
* pops: number of pop operations
* push_errors: number of push errors
* pop_errors: number of pop errors
* notifies: notifier counts
*/
struct knav_queue_stats {
atomic_t pushes;
atomic_t pops;
atomic_t push_errors;
atomic_t pop_errors;
atomic_t notifies;
};
/**
* struct knav_reg_queue: queue registers
* @entry_count: valid entries in the queue
* @byte_count: total byte count in thhe queue
* @packet_size: packet size for the queue
* @ptr_size_thresh: packet pointer size threshold
*/
struct knav_reg_queue {
u32 entry_count;
u32 byte_count;
u32 packet_size;
u32 ptr_size_thresh;
};
/**
* struct knav_region: qmss region info
* @dma_start, dma_end: start and end dma address
* @virt_start, virt_end: start and end virtual address
* @desc_size: descriptor size
* @used_desc: consumed descriptors
* @id: region number
* @num_desc: total descriptors
* @link_index: index of the first descriptor
* @name: region name
* @list: instance in the device's region list
* @pools: list of descriptor pools in the region
*/
struct knav_region {
dma_addr_t dma_start, dma_end;
void *virt_start, *virt_end;
unsigned desc_size;
unsigned used_desc;
unsigned id;
unsigned num_desc;
unsigned link_index;
const char *name;
struct list_head list;
struct list_head pools;
};
/**
* struct knav_pool: qmss pools
* @dev: device pointer
* @region: qmss region info
* @queue: queue registers
* @kdev: qmss device pointer
* @region_offset: offset from the base
* @num_desc: total descriptors
* @desc_size: descriptor size
* @region_id: region number
* @name: pool name
* @list: list head
* @region_inst: instance in the region's pool list
*/
struct knav_pool {
struct device *dev;
struct knav_region *region;
struct knav_queue *queue;
struct knav_device *kdev;
int region_offset;
int num_desc;
int desc_size;
int region_id;
const char *name;
struct list_head list;
struct list_head region_inst;
};
/**
* struct knav_queue_inst: qmss queue instace properties
* @descs: descriptor pointer
* @desc_head, desc_tail, desc_count: descriptor counters
* @acc: accumulator channel pointer
* @kdev: qmss device pointer
* @range: range info
* @qmgr: queue manager info
* @id: queue instace id
* @irq_num: irq line number
* @notify_needed: notifier needed based on queue type
* @num_notifiers: total notifiers
* @handles: list head
* @name: queue instance name
* @irq_name: irq line name
*/
struct knav_queue_inst {
u32 *descs;
atomic_t desc_head, desc_tail, desc_count;
struct knav_acc_channel *acc;
struct knav_device *kdev;
struct knav_range_info *range;
struct knav_qmgr_info *qmgr;
u32 id;
int irq_num;
int notify_needed;
atomic_t num_notifiers;
struct list_head handles;
const char *name;
const char *irq_name;
};
/**
* struct knav_queue: qmss queue properties
* @reg_push, reg_pop, reg_peek: push, pop queue registers
* @inst: qmss queue instace properties
* @notifier_fn: notifier function
* @notifier_fn_arg: notifier function argument
* @notifier_enabled: notier enabled for a give queue
* @rcu: rcu head
* @flags: queue flags
* @list: list head
*/
struct knav_queue {
struct knav_reg_queue __iomem *reg_push, *reg_pop, *reg_peek;
struct knav_queue_inst *inst;
struct knav_queue_stats stats;
knav_queue_notify_fn notifier_fn;
void *notifier_fn_arg;
atomic_t notifier_enabled;
struct rcu_head rcu;
unsigned flags;
struct list_head list;
};
struct knav_device {
struct device *dev;
unsigned base_id;
unsigned num_queues;
unsigned num_queues_in_use;
unsigned inst_shift;
struct knav_link_ram_block link_rams[KNAV_NUM_LINKRAM];
void *instances;
struct list_head regions;
struct list_head queue_ranges;
struct list_head pools;
struct list_head pdsps;
struct list_head qmgrs;
};
struct knav_range_ops {
int (*init_range)(struct knav_range_info *range);
int (*free_range)(struct knav_range_info *range);
int (*init_queue)(struct knav_range_info *range,
struct knav_queue_inst *inst);
int (*open_queue)(struct knav_range_info *range,
struct knav_queue_inst *inst, unsigned flags);
int (*close_queue)(struct knav_range_info *range,
struct knav_queue_inst *inst);
int (*set_notify)(struct knav_range_info *range,
struct knav_queue_inst *inst, bool enabled);
};
struct knav_irq_info {
int irq;
u32 cpu_map;
};
struct knav_range_info {
const char *name;
struct knav_device *kdev;
unsigned queue_base;
unsigned num_queues;
void *queue_base_inst;
unsigned flags;
struct list_head list;
struct knav_range_ops *ops;
struct knav_acc_info acc_info;
struct knav_acc_channel *acc;
unsigned num_irqs;
struct knav_irq_info irqs[RANGE_MAX_IRQS];
};
#define RANGE_RESERVED BIT(0)
#define RANGE_HAS_IRQ BIT(1)
#define RANGE_HAS_ACCUMULATOR BIT(2)
#define RANGE_MULTI_QUEUE BIT(3)
#define for_each_region(kdev, region) \
list_for_each_entry(region, &kdev->regions, list)
#define first_region(kdev) \
list_first_entry(&kdev->regions, \
struct knav_region, list)
#define for_each_queue_range(kdev, range) \
list_for_each_entry(range, &kdev->queue_ranges, list)
#define first_queue_range(kdev) \
list_first_entry(&kdev->queue_ranges, \
struct knav_range_info, list)
#define for_each_pool(kdev, pool) \
list_for_each_entry(pool, &kdev->pools, list)
#define for_each_pdsp(kdev, pdsp) \
list_for_each_entry(pdsp, &kdev->pdsps, list)
#define for_each_qmgr(kdev, qmgr) \
list_for_each_entry(qmgr, &kdev->qmgrs, list)
static inline struct knav_pdsp_info *
knav_find_pdsp(struct knav_device *kdev, unsigned pdsp_id)
{
struct knav_pdsp_info *pdsp;
for_each_pdsp(kdev, pdsp)
if (pdsp_id == pdsp->id)
return pdsp;
return NULL;
}
extern int knav_init_acc_range(struct knav_device *kdev,
struct device_node *node,
struct knav_range_info *range);
extern void knav_queue_notify(struct knav_queue_inst *inst);
#endif /* __KNAV_QMSS_H__ */

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