Nikita Yushchenko 0759c886f4 rtc: ds1307: add basic support for ds1341 chip ... This adds support for reading and writing date/time from/to ds1341 chip. ds1341 chip has other features - alarms, input clock (can be used instead of intercal oscillator for better accuracy), output clock ("square wave generation"). However, not all of that is available at the same time. Same chip pins, CLKIN/nINTA and SQW/nINTB, can be used either for input/output clocks, or for alarm interrupts. Role of these pins on particular board depends on hardware wiring. We can add device tree properties that describe if each of pins is wired as clock, or as interrupt, or left unconnected, and enable support for corresponding functionality based on that. But that is cumbersome, requires hardware for testing, and has to deal with bit enabling/disabling output clock also affects which pins alarm interrupts are routed to. Another factor is that there are hardware setups (i.e. ZII RDU2) that power DS1341 from SuperCap, which makes power saving critical. For such setups, kernel driver should leave register bits that control mentioned pins in the state configured by bootloader. Given all that, it was decided to limit support to "only date/time" for now. That is enough for common use case. Full (and cumbersome) implementation can be added later if ever needed. Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Aleksander Morgado <aleksander@aleksander.es> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>		2017-09-01 01:10:18 +02:00
..
accessibility
acpi	ACPI fixes for v4.13-rc1	2017-07-14 22:27:13 -07:00
amba
android
ata	Merge branch 'for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata	2017-07-06 09:41:58 -07:00
atm	net: convert sock.sk_wmem_alloc from atomic_t to refcount_t	2017-07-01 07:39:08 -07:00
auxdisplay
base	Device properties framework fix for v4.13-rc1	2017-07-14 22:39:35 -07:00
bcma
block	Merge branch 'for-linus' of git://git.kernel.dk/linux-block	2017-07-11 15:36:52 -07:00
bluetooth	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-07-05 12:31:59 -07:00
bus	main drm pull for v4.13	2017-07-09 18:48:37 -07:00
cdrom	block: don't set bounce limit in blk_init_queue	2017-06-27 12:13:45 -06:00
char	Add wait_for_random_bytes() and get_random_*_wait() functions so that	2017-07-15 12:44:02 -07:00
clk	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2017-07-15 10:59:54 -07:00
clocksource	ARM: SoC driver updates	2017-07-04 14:47:47 -07:00
connector
cpufreq	Power management fixes for v4.13-rc1	2017-07-14 22:24:25 -07:00
cpuidle	powerpc updates for 4.13	2017-07-07 13:55:45 -07:00
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2017-07-14 22:49:50 -07:00
dax	Writeback error handling fixes (pile #2)	2017-07-07 19:38:17 -07:00
dca
devfreq	PM / devfreq: constify attribute_group structures.	2017-07-06 10:17:24 +09:00
dio
dma	dmaengine updates for 4.13-rc1	2017-07-08 12:36:50 -07:00
dma-buf
edac	EDAC, pnd2: Fix Apollo Lake DIMM detection	2017-06-29 10:37:50 +02:00
eisa
extcon
firewire
firmware	efi: avoid fortify checks in EFI stub	2017-07-12 16:26:02 -07:00
fmc
fpga
fsi
gpio	Merge (most of) tag 'mfd-next-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd	2017-07-07 13:30:05 -07:00
gpu	Merge branch 'work.__copy_to_user' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-15 11:47:27 -07:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid	2017-07-10 09:22:48 -07:00
hsi	HSI changes for the v4.13 series	2017-07-04 14:28:22 -07:00
hv	SCSI misc on 20170704	2017-07-06 12:10:33 -07:00
hwmon	hwmon: (aspeed-pwm-tacho) Poll with short sleeps.	2017-06-24 08:58:06 -07:00
hwspinlock
hwtracing	Char/Misc patches for 4.13-rc1	2017-07-03 20:55:59 -07:00
i2c	Merge branch 'i2c/for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2017-07-12 10:04:56 -07:00
ide
idle	intel_idle: Use more common logging style	2017-06-29 22:58:35 +02:00
iio	hwmon updates for v4.13:	2017-07-04 11:48:27 -07:00
infiniband	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2017-07-13 14:27:32 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2017-07-14 22:53:37 -07:00
iommu	IOMMU Updates for Linux v4.13	2017-07-12 10:00:04 -07:00
ipack
irqchip	arm64 updates for 4.13:	2017-07-05 17:09:27 -07:00
isdn	Merge branch 'work.misc-set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-05 13:13:32 -07:00
leds	LED updates for 4.13	2017-07-06 11:32:40 -07:00
lguest
lightnvm	lightnvm: pblk: remove unnecessary checks	2017-07-07 13:17:36 -06:00
macintosh	Merge branch 'work.misc-set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-05 13:13:32 -07:00
mailbox	Merge branch 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration	2017-07-07 10:24:07 -07:00
mcb
md	Merge branch 'for-linus' of git://git.kernel.dk/linux-block	2017-07-11 15:36:52 -07:00
media	main drm pull for v4.13	2017-07-09 18:48:37 -07:00
memory	ARM: SoC driver updates	2017-07-04 14:47:47 -07:00
memstick
message
mfd	chrome-platform-for-linus-4.13	2017-07-11 09:55:47 -07:00
misc	powerpc updates for 4.13	2017-07-07 13:55:45 -07:00
mmc	MMC core:	2017-07-14 13:10:06 -07:00
mtd	MTD updates for v4.13-rc1:	2017-07-13 12:07:44 -07:00
mux
net	New IDT NTB driver and changes to the NTB infrastructure to allow for	2017-07-14 13:31:52 -07:00
nfc	NFC 4.13 pull request	2017-07-01 14:30:39 -07:00
ntb	ntb: Add error path/handling to Debug FS entry creation	2017-07-06 11:30:08 -04:00
nubus
nvdimm	Merge branch 'for-linus' of git://git.kernel.dk/linux-block	2017-07-11 15:36:52 -07:00
nvme	Merge branch 'for-linus' of git://git.kernel.dk/linux-block	2017-07-11 15:36:52 -07:00
nvmem
of	Device properties framework updates for v4.13-rc1	2017-07-10 15:23:45 -07:00
oprofile
parisc	parisc: ->mapping_error	2017-07-05 21:46:42 +02:00
parport
pci	Power management fixes for v4.13-rc1	2017-07-14 22:24:25 -07:00
pcmcia
perf	Merge branch 'aarch64/for-next/ras-apei' into aarch64/for-next/core	2017-06-26 10:54:27 +01:00
phy
pinctrl	This is the big bulk of pin control changes for the v4.13 series:	2017-07-06 11:38:59 -07:00
platform	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2017-07-15 10:59:54 -07:00
pnp	This is the bulk of GPIO changes for the v4.13 series:	2017-07-07 12:40:27 -07:00
power	power supply and reset changes for the v4.13 series (part 2)	2017-07-13 11:47:59 -07:00
powercap	powercap/RAPL: prevent overridding bits outside of the mask	2017-06-28 00:38:34 +02:00
pps
ps3
ptp	ptp: dte: Use LL suffix for 64-bit constants	2017-07-06 11:40:58 +01:00
pwm	pwm: Changes for v4.13-rc1	2017-07-13 11:49:52 -07:00
rapidio
ras	arm64 updates for 4.13:	2017-07-05 17:09:27 -07:00
regulator	Merge remote-tracking branches 'regulator/topic/settle', 'regulator/topic/tps65910' and 'regulator/topic/tps65917' into regulator-next	2017-07-03 16:52:21 +01:00
remoteproc	remoteproc/keystone: Fix circular dependencies for ARM configs	2017-06-27 16:21:34 -07:00
reset	ARM: SoC driver updates	2017-07-04 14:47:47 -07:00
rpmsg	rpmsg updates for v4.13	2017-07-06 15:38:31 -07:00
rtc	rtc: ds1307: add basic support for ds1341 chip	2017-09-01 01:10:18 +02:00
s390	drivers: s390: move static and inline before return type	2017-07-12 16:26:04 -07:00
sbus	block: don't set bounce limit in blk_init_queue	2017-06-27 12:13:45 -06:00
scsi	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2017-07-13 14:27:32 -07:00
sfi
sh	drivers/sh/intc/virq.c: delete an error message for a failed memory allocation in add_virq_to_pirq()	2017-07-06 16:24:30 -07:00
sn
soc	ARM: SoC driver updates	2017-07-04 14:47:47 -07:00
spi	Merge branch 'for-spi' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-08 10:41:53 -07:00
spmi
ssb
staging	MTD updates for v4.13-rc1:	2017-07-13 12:07:44 -07:00
target	Add wait_for_random_bytes() and get_random_*_wait() functions so that	2017-07-15 12:44:02 -07:00
tc
tee
thermal	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2017-07-14 13:12:32 -07:00
thunderbolt
tty	drivers: tty: serial: move inline before return type	2017-07-12 16:26:04 -07:00
uio
usb	USB: serial: safe_serial: move __inline__ before return type	2017-07-12 16:26:04 -07:00
uwb	driver core patches for 4.13-rc1	2017-07-03 20:27:48 -07:00
vfio	VFIO updates for v4.13-rc1	2017-07-13 12:23:54 -07:00
vhost	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2017-07-13 14:27:32 -07:00
video	Merge branch 'akpm' (patches from Andrew)	2017-07-13 12:38:49 -07:00
virt
virtio
vlynq
vme
w1
watchdog	Merge git://www.linux-watchdog.org/linux-watchdog	2017-07-11 09:59:37 -07:00
xen	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2017-07-13 14:27:32 -07:00
zorro
Kconfig
Makefile