- Introduce device-managed registration devm_mbox_controller_un/register and convert drivers to use it
- Introduce flush api to support clients that must busy-wait in atomic context - Support multiple controllers per device - Hi3660: a bugfix and constify ops structure - TI-MsgMgr: off by one bugfix. - BCM: switch to spdx license - Tegra-HSP: support for shared mailboxes and suspend/resume. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE6EwehDt/SOnwFyTyf9lkf8eYP5UFAlwsSx4ACgkQf9lkf8eY P5V7VBAAkYp05XY1IsH5x1nSqhFb+cco0pv0kwO3Sr+IhYgC3i5aD2JMtIGu3N34 8lFrNXbrodDFsY37dAd8YDP4zoJ6LGmB9Z7brjuce/Mlgj63Z7EV5R+PW6UC/thP ul9RVM3d0YoRfutHz0p8+0vgB2d90Npng6f1XhNBwniWNtzFm1QoDl/rr5QI/126 tdgpuC/79fl1ymuzrBxMx7Yn5LG4P5B834gip16qiKlhaawL98nmWoF0EyIFwSMN Oo4yxpiMPsLC1Jt9EygXOHyybt1WSgCGlKV0fk6iiugR2YmDfVaiASq8e1gBN9W8 8ILFxEFkfbR4uat3fDErymGmdQrt0pFeSBnwej30JS/GTASz5i0XAIfpVYL113t9 WzsMR8YZGW3hk1Z+ZXJhecszYhDg4GAfew2kADqmdBeG6JX8eBn0wYFRFYjYPsXR idrsWkuzYmNXUaFg10Un3OgVwmpnhB7QmiKXTeqpWkcYlrI8MiljwAK+wXh2/23S vxM+hdbKLQ++0m6iMz/9HE3b5LJlJtXwz5UDagWvgr6t0UTxviPK7xpjvgvRlUny OYd2UuC0X3dHWWflST6eWR4hWqc96KHLsTAn3X9nm+S41ijZHU+MS3B/F1Z5R1LS tU3V0JK5Q+61Va5brSr7/XO3TEy+5n1jWl92SGnayFuqnVaXZyQ= =b4QB -----END PGP SIGNATURE----- Merge tag 'mailbox-v4.21' of git://git.linaro.org/landing-teams/working/fujitsu/integration Pull mailbox updates from Jassi Brar: - Introduce device-managed registration devm_mbox_controller_un/register and convert drivers to use it - Introduce flush api to support clients that must busy-wait in atomic context - Support multiple controllers per device - Hi3660: a bugfix and constify ops structure - TI-MsgMgr: off by one bugfix. - BCM: switch to spdx license - Tegra-HSP: support for shared mailboxes and suspend/resume. * tag 'mailbox-v4.21' of git://git.linaro.org/landing-teams/working/fujitsu/integration: (30 commits) mailbox: tegra-hsp: Use device-managed registration API mailbox: tegra-hsp: use devm_kstrdup_const() mailbox: tegra-hsp: Add suspend/resume support mailbox: tegra-hsp: Add support for shared mailboxes dt-bindings: tegra186-hsp: Add shared mailboxes mailbox: Allow multiple controllers per device mailbox: Support blocking transfers in atomic context mailbox: ti-msgmgr: Use device-managed registration API mailbox: stm32-ipcc: Use device-managed registration API mailbox: rockchip: Use device-managed registration API mailbox: qcom-apcs: Use device-managed registration API mailbox: platform-mhu: Use device-managed registration API mailbox: omap: Use device-managed registration API mailbox: mtk-cmdq: Remove needless devm_kfree() calls mailbox: mtk-cmdq: Use device-managed registration API mailbox: xgene-slimpro: Use device-managed registration API mailbox: sti: Use device-managed registration API mailbox: altera: Use device-managed registration API mailbox: imx: Use device-managed registration API mailbox: hi6220: Use device-managed registration API ...
This commit is contained in:
commit
35ddb06a46
23 changed files with 612 additions and 247 deletions
|
|
@ -15,12 +15,15 @@ Required properties:
|
|||
Array of strings.
|
||||
one of:
|
||||
- "nvidia,tegra186-hsp"
|
||||
- "nvidia,tegra194-hsp", "nvidia,tegra186-hsp"
|
||||
- reg : Offset and length of the register set for the device.
|
||||
- interrupt-names
|
||||
Array of strings.
|
||||
Contains a list of names for the interrupts described by the interrupt
|
||||
property. May contain the following entries, in any order:
|
||||
- "doorbell"
|
||||
- "sharedN", where 'N' is a number from zero up to the number of
|
||||
external interrupts supported by the HSP instance minus one.
|
||||
Users of this binding MUST look up entries in the interrupt property
|
||||
by name, using this interrupt-names property to do so.
|
||||
- interrupts
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||||
|
|
@ -29,12 +32,29 @@ Required properties:
|
|||
in a matching order.
|
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- #mbox-cells : Should be 2.
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||||
|
||||
The mbox specifier of the "mboxes" property in the client node should
|
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contain two data. The first one should be the HSP type and the second
|
||||
one should be the ID that the client is going to use. Those information
|
||||
can be found in the following file.
|
||||
The mbox specifier of the "mboxes" property in the client node should contain
|
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two cells. The first cell determines the HSP type and the second cell is used
|
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to identify the mailbox that the client is going to use.
|
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|
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- <dt-bindings/mailbox/tegra186-hsp.h>.
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For doorbells, the second cell specifies the index of the doorbell to use.
|
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|
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For shared mailboxes, the second cell is composed of two fields:
|
||||
- bits 31..24:
|
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A bit mask of flags that further specify how the shared mailbox will be
|
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used. Valid flags are:
|
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- bit 31:
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Defines the direction of the mailbox. If set, the mailbox will be used
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as a producer (i.e. used to send data). If cleared, the mailbox is the
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consumer of data sent by a producer.
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- bits 23.. 0:
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The index of the shared mailbox to use. The number of available mailboxes
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may vary by instance of the HSP block and SoC generation.
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The following file contains definitions that can be used to construct mailbox
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specifiers:
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|
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<dt-bindings/mailbox/tegra186-hsp.h>
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|
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Example:
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|
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|
|
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|||
|
|
@ -152,7 +152,7 @@ static int mhu_probe(struct amba_device *adev, const struct amba_id *id)
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amba_set_drvdata(adev, mhu);
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err = mbox_controller_register(&mhu->mbox);
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err = devm_mbox_controller_register(dev, &mhu->mbox);
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if (err) {
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dev_err(dev, "Failed to register mailboxes %d\n", err);
|
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return err;
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||||
|
|
@ -162,15 +162,6 @@ static int mhu_probe(struct amba_device *adev, const struct amba_id *id)
|
|||
return 0;
|
||||
}
|
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|
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static int mhu_remove(struct amba_device *adev)
|
||||
{
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struct arm_mhu *mhu = amba_get_drvdata(adev);
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mbox_controller_unregister(&mhu->mbox);
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|
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return 0;
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}
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|
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static struct amba_id mhu_ids[] = {
|
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{
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.id = 0x1bb098,
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||||
|
|
@ -186,7 +177,6 @@ static struct amba_driver arm_mhu_driver = {
|
|||
},
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.id_table = mhu_ids,
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.probe = mhu_probe,
|
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.remove = mhu_remove,
|
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};
|
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module_amba_driver(arm_mhu_driver);
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|
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|
|
|
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|
|
@ -1665,7 +1665,7 @@ skip_debugfs:
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mbox->controller.chans[index].con_priv = &mbox->rings[index];
|
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|
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/* Register mailbox controller */
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ret = mbox_controller_register(&mbox->controller);
|
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ret = devm_mbox_controller_register(dev, &mbox->controller);
|
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if (ret)
|
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goto fail_free_debugfs_root;
|
||||
|
||||
|
|
@ -1691,8 +1691,6 @@ static int flexrm_mbox_remove(struct platform_device *pdev)
|
|||
struct device *dev = &pdev->dev;
|
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struct flexrm_mbox *mbox = platform_get_drvdata(pdev);
|
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|
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mbox_controller_unregister(&mbox->controller);
|
||||
|
||||
debugfs_remove_recursive(mbox->root);
|
||||
|
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platform_msi_domain_free_irqs(dev);
|
||||
|
|
|
|||
|
|
@ -1471,7 +1471,7 @@ static int pdc_mb_init(struct pdc_state *pdcs)
|
|||
mbc->chans[chan_index].con_priv = pdcs;
|
||||
|
||||
/* Register mailbox controller */
|
||||
err = mbox_controller_register(mbc);
|
||||
err = devm_mbox_controller_register(dev, mbc);
|
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if (err) {
|
||||
dev_crit(dev,
|
||||
"Failed to register PDC mailbox controller. Error %d.",
|
||||
|
|
@ -1641,8 +1641,6 @@ static int pdc_remove(struct platform_device *pdev)
|
|||
|
||||
pdc_hw_disable(pdcs);
|
||||
|
||||
mbox_controller_unregister(&pdcs->mbc);
|
||||
|
||||
dma_pool_destroy(pdcs->rx_buf_pool);
|
||||
dma_pool_destroy(pdcs->ring_pool);
|
||||
return 0;
|
||||
|
|
|
|||
|
|
@ -1,15 +1,9 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* Copyright (C) 2010,2015 Broadcom
|
||||
* Copyright (C) 2013-2014 Lubomir Rintel
|
||||
* Copyright (C) 2013 Craig McGeachie
|
||||
*
|
||||
* 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 device provides a mechanism for writing to the mailboxes,
|
||||
* that are shared between the ARM and the VideoCore processor
|
||||
*
|
||||
* Parts of the driver are based on:
|
||||
* - arch/arm/mach-bcm2708/vcio.c file written by Gray Girling that was
|
||||
* obtained from branch "rpi-3.6.y" of git://github.com/raspberrypi/
|
||||
|
|
@ -178,7 +172,7 @@ static int bcm2835_mbox_probe(struct platform_device *pdev)
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if (!mbox->controller.chans)
|
||||
return -ENOMEM;
|
||||
|
||||
ret = mbox_controller_register(&mbox->controller);
|
||||
ret = devm_mbox_controller_register(dev, &mbox->controller);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
|
|
@ -188,13 +182,6 @@ static int bcm2835_mbox_probe(struct platform_device *pdev)
|
|||
return ret;
|
||||
}
|
||||
|
||||
static int bcm2835_mbox_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct bcm2835_mbox *mbox = platform_get_drvdata(pdev);
|
||||
mbox_controller_unregister(&mbox->controller);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id bcm2835_mbox_of_match[] = {
|
||||
{ .compatible = "brcm,bcm2835-mbox", },
|
||||
{},
|
||||
|
|
@ -207,7 +194,6 @@ static struct platform_driver bcm2835_mbox_driver = {
|
|||
.of_match_table = bcm2835_mbox_of_match,
|
||||
},
|
||||
.probe = bcm2835_mbox_probe,
|
||||
.remove = bcm2835_mbox_remove,
|
||||
};
|
||||
module_platform_driver(bcm2835_mbox_driver);
|
||||
|
||||
|
|
|
|||
|
|
@ -38,6 +38,7 @@
|
|||
#define MBOX_AUTOMATIC_ACK 1
|
||||
|
||||
#define MBOX_STATE_IDLE BIT(4)
|
||||
#define MBOX_STATE_READY BIT(5)
|
||||
#define MBOX_STATE_ACK BIT(7)
|
||||
|
||||
#define MBOX_MSG_LEN 8
|
||||
|
|
@ -91,8 +92,8 @@ static int hi3660_mbox_check_state(struct mbox_chan *chan)
|
|||
unsigned long val;
|
||||
unsigned int ret;
|
||||
|
||||
/* Mailbox is idle so directly bail out */
|
||||
if (readl(base + MBOX_MODE_REG) & MBOX_STATE_IDLE)
|
||||
/* Mailbox is ready to use */
|
||||
if (readl(base + MBOX_MODE_REG) & MBOX_STATE_READY)
|
||||
return 0;
|
||||
|
||||
/* Wait for acknowledge from remote */
|
||||
|
|
@ -103,9 +104,9 @@ static int hi3660_mbox_check_state(struct mbox_chan *chan)
|
|||
return ret;
|
||||
}
|
||||
|
||||
/* Ensure channel is released */
|
||||
writel(0xffffffff, base + MBOX_IMASK_REG);
|
||||
writel(BIT(mchan->ack_irq), base + MBOX_SRC_REG);
|
||||
/* clear ack state, mailbox will get back to ready state */
|
||||
writel(BIT(mchan->ack_irq), base + MBOX_ICLR_REG);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -160,10 +161,6 @@ static int hi3660_mbox_startup(struct mbox_chan *chan)
|
|||
{
|
||||
int ret;
|
||||
|
||||
ret = hi3660_mbox_check_state(chan);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = hi3660_mbox_unlock(chan);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
|
@ -183,10 +180,11 @@ static int hi3660_mbox_send_data(struct mbox_chan *chan, void *msg)
|
|||
void __iomem *base = MBOX_BASE(mbox, ch);
|
||||
u32 *buf = msg;
|
||||
unsigned int i;
|
||||
int ret;
|
||||
|
||||
/* Ensure channel is released */
|
||||
writel_relaxed(0xffffffff, base + MBOX_IMASK_REG);
|
||||
writel_relaxed(BIT(mchan->ack_irq), base + MBOX_SRC_REG);
|
||||
ret = hi3660_mbox_check_state(chan);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* Clear mask for destination interrupt */
|
||||
writel_relaxed(~BIT(mchan->dst_irq), base + MBOX_IMASK_REG);
|
||||
|
|
@ -206,7 +204,7 @@ static int hi3660_mbox_send_data(struct mbox_chan *chan, void *msg)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static struct mbox_chan_ops hi3660_mbox_ops = {
|
||||
static const struct mbox_chan_ops hi3660_mbox_ops = {
|
||||
.startup = hi3660_mbox_startup,
|
||||
.send_data = hi3660_mbox_send_data,
|
||||
};
|
||||
|
|
@ -267,7 +265,7 @@ static int hi3660_mbox_probe(struct platform_device *pdev)
|
|||
for (ch = 0; ch < MBOX_CHAN_MAX; ch++)
|
||||
chan[ch].con_priv = (void *)ch;
|
||||
|
||||
err = mbox_controller_register(&mbox->controller);
|
||||
err = devm_mbox_controller_register(dev, &mbox->controller);
|
||||
if (err) {
|
||||
dev_err(dev, "Failed to register mailbox %d\n", err);
|
||||
return err;
|
||||
|
|
@ -278,17 +276,8 @@ static int hi3660_mbox_probe(struct platform_device *pdev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int hi3660_mbox_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct hi3660_mbox *mbox = platform_get_drvdata(pdev);
|
||||
|
||||
mbox_controller_unregister(&mbox->controller);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver hi3660_mbox_driver = {
|
||||
.probe = hi3660_mbox_probe,
|
||||
.remove = hi3660_mbox_remove,
|
||||
.driver = {
|
||||
.name = "hi3660-mbox",
|
||||
.of_match_table = hi3660_mbox_of_match,
|
||||
|
|
|
|||
|
|
@ -349,7 +349,7 @@ static int hi6220_mbox_probe(struct platform_device *pdev)
|
|||
mbox->controller.txpoll_period = 5;
|
||||
}
|
||||
|
||||
err = mbox_controller_register(&mbox->controller);
|
||||
err = devm_mbox_controller_register(dev, &mbox->controller);
|
||||
if (err) {
|
||||
dev_err(dev, "Failed to register mailbox %d\n", err);
|
||||
return err;
|
||||
|
|
@ -360,14 +360,6 @@ static int hi6220_mbox_probe(struct platform_device *pdev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int hi6220_mbox_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct hi6220_mbox *mbox = platform_get_drvdata(pdev);
|
||||
|
||||
mbox_controller_unregister(&mbox->controller);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver hi6220_mbox_driver = {
|
||||
.driver = {
|
||||
.name = "hi6220-mbox",
|
||||
|
|
@ -375,7 +367,6 @@ static struct platform_driver hi6220_mbox_driver = {
|
|||
.of_match_table = hi6220_mbox_of_match,
|
||||
},
|
||||
.probe = hi6220_mbox_probe,
|
||||
.remove = hi6220_mbox_remove,
|
||||
};
|
||||
|
||||
static int __init hi6220_mbox_init(void)
|
||||
|
|
|
|||
|
|
@ -324,14 +324,13 @@ static int imx_mu_probe(struct platform_device *pdev)
|
|||
|
||||
imx_mu_init_generic(priv);
|
||||
|
||||
return mbox_controller_register(&priv->mbox);
|
||||
return devm_mbox_controller_register(dev, &priv->mbox);
|
||||
}
|
||||
|
||||
static int imx_mu_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct imx_mu_priv *priv = platform_get_drvdata(pdev);
|
||||
|
||||
mbox_controller_unregister(&priv->mbox);
|
||||
clk_disable_unprepare(priv->clk);
|
||||
|
||||
return 0;
|
||||
|
|
|
|||
|
|
@ -341,7 +341,7 @@ static int altera_mbox_probe(struct platform_device *pdev)
|
|||
}
|
||||
}
|
||||
|
||||
ret = mbox_controller_register(&mbox->controller);
|
||||
ret = devm_mbox_controller_register(&pdev->dev, &mbox->controller);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "Register mailbox failed\n");
|
||||
goto err;
|
||||
|
|
@ -352,18 +352,6 @@ err:
|
|||
return ret;
|
||||
}
|
||||
|
||||
static int altera_mbox_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct altera_mbox *mbox = platform_get_drvdata(pdev);
|
||||
|
||||
if (!mbox)
|
||||
return -EINVAL;
|
||||
|
||||
mbox_controller_unregister(&mbox->controller);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id altera_mbox_match[] = {
|
||||
{ .compatible = "altr,mailbox-1.0" },
|
||||
{ /* Sentinel */ }
|
||||
|
|
@ -373,7 +361,6 @@ MODULE_DEVICE_TABLE(of, altera_mbox_match);
|
|||
|
||||
static struct platform_driver altera_mbox_driver = {
|
||||
.probe = altera_mbox_probe,
|
||||
.remove = altera_mbox_remove,
|
||||
.driver = {
|
||||
.name = DRIVER_NAME,
|
||||
.of_match_table = altera_mbox_match,
|
||||
|
|
|
|||
|
|
@ -462,7 +462,7 @@ static int sti_mbox_probe(struct platform_device *pdev)
|
|||
mbox->chans = chans;
|
||||
mbox->num_chans = STI_MBOX_CHAN_MAX;
|
||||
|
||||
ret = mbox_controller_register(mbox);
|
||||
ret = devm_mbox_controller_register(&pdev->dev, mbox);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
|
|
@ -480,7 +480,6 @@ static int sti_mbox_probe(struct platform_device *pdev)
|
|||
IRQF_ONESHOT, mdev->name, mdev);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "Can't claim IRQ %d\n", irq);
|
||||
mbox_controller_unregister(mbox);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
|
|
@ -489,18 +488,8 @@ static int sti_mbox_probe(struct platform_device *pdev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int sti_mbox_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct sti_mbox_device *mdev = platform_get_drvdata(pdev);
|
||||
|
||||
mbox_controller_unregister(mdev->mbox);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver sti_mbox_driver = {
|
||||
.probe = sti_mbox_probe,
|
||||
.remove = sti_mbox_remove,
|
||||
.driver = {
|
||||
.name = "sti-mailbox",
|
||||
.of_match_table = sti_mailbox_match,
|
||||
|
|
|
|||
|
|
@ -224,7 +224,7 @@ static int slimpro_mbox_probe(struct platform_device *pdev)
|
|||
ctx->mb_ctrl.ops = &slimpro_mbox_ops;
|
||||
ctx->mb_ctrl.num_chans = i;
|
||||
|
||||
rc = mbox_controller_register(&ctx->mb_ctrl);
|
||||
rc = devm_mbox_controller_register(&pdev->dev, &ctx->mb_ctrl);
|
||||
if (rc) {
|
||||
dev_err(&pdev->dev,
|
||||
"APM X-Gene SLIMpro MailBox register failed:%d\n", rc);
|
||||
|
|
@ -235,14 +235,6 @@ static int slimpro_mbox_probe(struct platform_device *pdev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int slimpro_mbox_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct slimpro_mbox *smb = platform_get_drvdata(pdev);
|
||||
|
||||
mbox_controller_unregister(&smb->mb_ctrl);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id slimpro_of_match[] = {
|
||||
{.compatible = "apm,xgene-slimpro-mbox" },
|
||||
{ },
|
||||
|
|
@ -259,7 +251,6 @@ MODULE_DEVICE_TABLE(acpi, slimpro_acpi_ids);
|
|||
|
||||
static struct platform_driver slimpro_mbox_driver = {
|
||||
.probe = slimpro_mbox_probe,
|
||||
.remove = slimpro_mbox_remove,
|
||||
.driver = {
|
||||
.name = "xgene-slimpro-mbox",
|
||||
.of_match_table = of_match_ptr(slimpro_of_match),
|
||||
|
|
|
|||
|
|
@ -283,6 +283,34 @@ int mbox_send_message(struct mbox_chan *chan, void *mssg)
|
|||
}
|
||||
EXPORT_SYMBOL_GPL(mbox_send_message);
|
||||
|
||||
/**
|
||||
* mbox_flush - flush a mailbox channel
|
||||
* @chan: mailbox channel to flush
|
||||
* @timeout: time, in milliseconds, to allow the flush operation to succeed
|
||||
*
|
||||
* Mailbox controllers that need to work in atomic context can implement the
|
||||
* ->flush() callback to busy loop until a transmission has been completed.
|
||||
* The implementation must call mbox_chan_txdone() upon success. Clients can
|
||||
* call the mbox_flush() function at any time after mbox_send_message() to
|
||||
* flush the transmission. After the function returns success, the mailbox
|
||||
* transmission is guaranteed to have completed.
|
||||
*
|
||||
* Returns: 0 on success or a negative error code on failure.
|
||||
*/
|
||||
int mbox_flush(struct mbox_chan *chan, unsigned long timeout)
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (!chan->mbox->ops->flush)
|
||||
return -ENOTSUPP;
|
||||
|
||||
ret = chan->mbox->ops->flush(chan, timeout);
|
||||
if (ret < 0)
|
||||
tx_tick(chan, ret);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* mbox_request_channel - Request a mailbox channel.
|
||||
* @cl: Identity of the client requesting the channel.
|
||||
|
|
@ -327,7 +355,8 @@ struct mbox_chan *mbox_request_channel(struct mbox_client *cl, int index)
|
|||
list_for_each_entry(mbox, &mbox_cons, node)
|
||||
if (mbox->dev->of_node == spec.np) {
|
||||
chan = mbox->of_xlate(mbox, &spec);
|
||||
break;
|
||||
if (!IS_ERR(chan))
|
||||
break;
|
||||
}
|
||||
|
||||
of_node_put(spec.np);
|
||||
|
|
@ -515,3 +544,73 @@ void mbox_controller_unregister(struct mbox_controller *mbox)
|
|||
mutex_unlock(&con_mutex);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(mbox_controller_unregister);
|
||||
|
||||
static void __devm_mbox_controller_unregister(struct device *dev, void *res)
|
||||
{
|
||||
struct mbox_controller **mbox = res;
|
||||
|
||||
mbox_controller_unregister(*mbox);
|
||||
}
|
||||
|
||||
static int devm_mbox_controller_match(struct device *dev, void *res, void *data)
|
||||
{
|
||||
struct mbox_controller **mbox = res;
|
||||
|
||||
if (WARN_ON(!mbox || !*mbox))
|
||||
return 0;
|
||||
|
||||
return *mbox == data;
|
||||
}
|
||||
|
||||
/**
|
||||
* devm_mbox_controller_register() - managed mbox_controller_register()
|
||||
* @dev: device owning the mailbox controller being registered
|
||||
* @mbox: mailbox controller being registered
|
||||
*
|
||||
* This function adds a device-managed resource that will make sure that the
|
||||
* mailbox controller, which is registered using mbox_controller_register()
|
||||
* as part of this function, will be unregistered along with the rest of
|
||||
* device-managed resources upon driver probe failure or driver removal.
|
||||
*
|
||||
* Returns 0 on success or a negative error code on failure.
|
||||
*/
|
||||
int devm_mbox_controller_register(struct device *dev,
|
||||
struct mbox_controller *mbox)
|
||||
{
|
||||
struct mbox_controller **ptr;
|
||||
int err;
|
||||
|
||||
ptr = devres_alloc(__devm_mbox_controller_unregister, sizeof(*ptr),
|
||||
GFP_KERNEL);
|
||||
if (!ptr)
|
||||
return -ENOMEM;
|
||||
|
||||
err = mbox_controller_register(mbox);
|
||||
if (err < 0) {
|
||||
devres_free(ptr);
|
||||
return err;
|
||||
}
|
||||
|
||||
devres_add(dev, ptr);
|
||||
*ptr = mbox;
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(devm_mbox_controller_register);
|
||||
|
||||
/**
|
||||
* devm_mbox_controller_unregister() - managed mbox_controller_unregister()
|
||||
* @dev: device owning the mailbox controller being unregistered
|
||||
* @mbox: mailbox controller being unregistered
|
||||
*
|
||||
* This function unregisters the mailbox controller and removes the device-
|
||||
* managed resource that was set up to automatically unregister the mailbox
|
||||
* controller on driver probe failure or driver removal. It's typically not
|
||||
* necessary to call this function.
|
||||
*/
|
||||
void devm_mbox_controller_unregister(struct device *dev, struct mbox_controller *mbox)
|
||||
{
|
||||
WARN_ON(devres_release(dev, __devm_mbox_controller_unregister,
|
||||
devm_mbox_controller_match, mbox));
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(devm_mbox_controller_unregister);
|
||||
|
|
|
|||
|
|
@ -337,17 +337,8 @@ static int cmdq_remove(struct platform_device *pdev)
|
|||
{
|
||||
struct cmdq *cmdq = platform_get_drvdata(pdev);
|
||||
|
||||
mbox_controller_unregister(&cmdq->mbox);
|
||||
clk_unprepare(cmdq->clock);
|
||||
|
||||
if (cmdq->mbox.chans)
|
||||
devm_kfree(&pdev->dev, cmdq->mbox.chans);
|
||||
|
||||
if (cmdq->thread)
|
||||
devm_kfree(&pdev->dev, cmdq->thread);
|
||||
|
||||
devm_kfree(&pdev->dev, cmdq);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -524,7 +515,7 @@ static int cmdq_probe(struct platform_device *pdev)
|
|||
cmdq->mbox.chans[i].con_priv = (void *)&cmdq->thread[i];
|
||||
}
|
||||
|
||||
err = mbox_controller_register(&cmdq->mbox);
|
||||
err = devm_mbox_controller_register(dev, &cmdq->mbox);
|
||||
if (err < 0) {
|
||||
dev_err(dev, "failed to register mailbox: %d\n", err);
|
||||
return err;
|
||||
|
|
|
|||
|
|
@ -486,7 +486,7 @@ static int omap_mbox_register(struct omap_mbox_device *mdev)
|
|||
list_add(&mdev->elem, &omap_mbox_devices);
|
||||
mutex_unlock(&omap_mbox_devices_lock);
|
||||
|
||||
ret = mbox_controller_register(&mdev->controller);
|
||||
ret = devm_mbox_controller_register(mdev->dev, &mdev->controller);
|
||||
|
||||
err_out:
|
||||
if (ret) {
|
||||
|
|
@ -508,8 +508,6 @@ static int omap_mbox_unregister(struct omap_mbox_device *mdev)
|
|||
list_del(&mdev->elem);
|
||||
mutex_unlock(&omap_mbox_devices_lock);
|
||||
|
||||
mbox_controller_unregister(&mdev->controller);
|
||||
|
||||
mboxes = mdev->mboxes;
|
||||
for (i = 0; mboxes[i]; i++)
|
||||
device_unregister(mboxes[i]->dev);
|
||||
|
|
|
|||
|
|
@ -163,7 +163,7 @@ static int platform_mhu_probe(struct platform_device *pdev)
|
|||
|
||||
platform_set_drvdata(pdev, mhu);
|
||||
|
||||
err = mbox_controller_register(&mhu->mbox);
|
||||
err = devm_mbox_controller_register(dev, &mhu->mbox);
|
||||
if (err) {
|
||||
dev_err(dev, "Failed to register mailboxes %d\n", err);
|
||||
return err;
|
||||
|
|
@ -173,15 +173,6 @@ static int platform_mhu_probe(struct platform_device *pdev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int platform_mhu_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct platform_mhu *mhu = platform_get_drvdata(pdev);
|
||||
|
||||
mbox_controller_unregister(&mhu->mbox);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id platform_mhu_dt_ids[] = {
|
||||
{ .compatible = "amlogic,meson-gxbb-mhu", },
|
||||
{ /* sentinel */ },
|
||||
|
|
@ -190,7 +181,6 @@ MODULE_DEVICE_TABLE(of, platform_mhu_dt_ids);
|
|||
|
||||
static struct platform_driver platform_mhu_driver = {
|
||||
.probe = platform_mhu_probe,
|
||||
.remove = platform_mhu_remove,
|
||||
.driver = {
|
||||
.name = "platform-mhu",
|
||||
.of_match_table = platform_mhu_dt_ids,
|
||||
|
|
|
|||
|
|
@ -91,7 +91,7 @@ static int qcom_apcs_ipc_probe(struct platform_device *pdev)
|
|||
apcs->mbox.chans = apcs->mbox_chans;
|
||||
apcs->mbox.num_chans = ARRAY_SIZE(apcs->mbox_chans);
|
||||
|
||||
ret = mbox_controller_register(&apcs->mbox);
|
||||
ret = devm_mbox_controller_register(&pdev->dev, &apcs->mbox);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "failed to register APCS IPC controller\n");
|
||||
return ret;
|
||||
|
|
@ -115,7 +115,6 @@ static int qcom_apcs_ipc_remove(struct platform_device *pdev)
|
|||
struct qcom_apcs_ipc *apcs = platform_get_drvdata(pdev);
|
||||
struct platform_device *clk = apcs->clk;
|
||||
|
||||
mbox_controller_unregister(&apcs->mbox);
|
||||
platform_device_unregister(clk);
|
||||
|
||||
return 0;
|
||||
|
|
|
|||
|
|
@ -247,28 +247,15 @@ static int rockchip_mbox_probe(struct platform_device *pdev)
|
|||
mb->chans[i].msg = NULL;
|
||||
}
|
||||
|
||||
ret = mbox_controller_register(&mb->mbox);
|
||||
ret = devm_mbox_controller_register(&pdev->dev, &mb->mbox);
|
||||
if (ret < 0)
|
||||
dev_err(&pdev->dev, "Failed to register mailbox: %d\n", ret);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int rockchip_mbox_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct rockchip_mbox *mb = platform_get_drvdata(pdev);
|
||||
|
||||
if (!mb)
|
||||
return -EINVAL;
|
||||
|
||||
mbox_controller_unregister(&mb->mbox);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver rockchip_mbox_driver = {
|
||||
.probe = rockchip_mbox_probe,
|
||||
.remove = rockchip_mbox_remove,
|
||||
.driver = {
|
||||
.name = "rockchip-mailbox",
|
||||
.of_match_table = of_match_ptr(rockchip_mbox_of_match),
|
||||
|
|
|
|||
|
|
@ -299,7 +299,7 @@ static int stm32_ipcc_probe(struct platform_device *pdev)
|
|||
for (i = 0; i < ipcc->controller.num_chans; i++)
|
||||
ipcc->controller.chans[i].con_priv = (void *)i;
|
||||
|
||||
ret = mbox_controller_register(&ipcc->controller);
|
||||
ret = devm_mbox_controller_register(dev, &ipcc->controller);
|
||||
if (ret)
|
||||
goto err_irq_wkp;
|
||||
|
||||
|
|
@ -329,8 +329,6 @@ static int stm32_ipcc_remove(struct platform_device *pdev)
|
|||
{
|
||||
struct stm32_ipcc *ipcc = platform_get_drvdata(pdev);
|
||||
|
||||
mbox_controller_unregister(&ipcc->controller);
|
||||
|
||||
if (ipcc->wkp)
|
||||
dev_pm_clear_wake_irq(&pdev->dev);
|
||||
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
* Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
|
||||
* Copyright (c) 2016-2018, NVIDIA CORPORATION. All rights reserved.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms and conditions of the GNU General Public License,
|
||||
|
|
@ -11,16 +11,29 @@
|
|||
* more details.
|
||||
*/
|
||||
|
||||
#include <linux/delay.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/mailbox_controller.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_device.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/pm.h>
|
||||
#include <linux/slab.h>
|
||||
|
||||
#include <dt-bindings/mailbox/tegra186-hsp.h>
|
||||
|
||||
#include "mailbox.h"
|
||||
|
||||
#define HSP_INT_IE(x) (0x100 + ((x) * 4))
|
||||
#define HSP_INT_IV 0x300
|
||||
#define HSP_INT_IR 0x304
|
||||
|
||||
#define HSP_INT_EMPTY_SHIFT 0
|
||||
#define HSP_INT_EMPTY_MASK 0xff
|
||||
#define HSP_INT_FULL_SHIFT 8
|
||||
#define HSP_INT_FULL_MASK 0xff
|
||||
|
||||
#define HSP_INT_DIMENSIONING 0x380
|
||||
#define HSP_nSM_SHIFT 0
|
||||
#define HSP_nSS_SHIFT 4
|
||||
|
|
@ -34,6 +47,11 @@
|
|||
#define HSP_DB_RAW 0x8
|
||||
#define HSP_DB_PENDING 0xc
|
||||
|
||||
#define HSP_SM_SHRD_MBOX 0x0
|
||||
#define HSP_SM_SHRD_MBOX_FULL BIT(31)
|
||||
#define HSP_SM_SHRD_MBOX_FULL_INT_IE 0x04
|
||||
#define HSP_SM_SHRD_MBOX_EMPTY_INT_IE 0x08
|
||||
|
||||
#define HSP_DB_CCPLEX 1
|
||||
#define HSP_DB_BPMP 3
|
||||
#define HSP_DB_MAX 7
|
||||
|
|
@ -55,6 +73,12 @@ struct tegra_hsp_doorbell {
|
|||
unsigned int index;
|
||||
};
|
||||
|
||||
struct tegra_hsp_mailbox {
|
||||
struct tegra_hsp_channel channel;
|
||||
unsigned int index;
|
||||
bool producer;
|
||||
};
|
||||
|
||||
struct tegra_hsp_db_map {
|
||||
const char *name;
|
||||
unsigned int master;
|
||||
|
|
@ -63,13 +87,18 @@ struct tegra_hsp_db_map {
|
|||
|
||||
struct tegra_hsp_soc {
|
||||
const struct tegra_hsp_db_map *map;
|
||||
bool has_per_mb_ie;
|
||||
};
|
||||
|
||||
struct tegra_hsp {
|
||||
struct device *dev;
|
||||
const struct tegra_hsp_soc *soc;
|
||||
struct mbox_controller mbox;
|
||||
struct mbox_controller mbox_db;
|
||||
struct mbox_controller mbox_sm;
|
||||
void __iomem *regs;
|
||||
unsigned int irq;
|
||||
unsigned int doorbell_irq;
|
||||
unsigned int *shared_irqs;
|
||||
unsigned int shared_irq;
|
||||
unsigned int num_sm;
|
||||
unsigned int num_as;
|
||||
unsigned int num_ss;
|
||||
|
|
@ -78,13 +107,10 @@ struct tegra_hsp {
|
|||
spinlock_t lock;
|
||||
|
||||
struct list_head doorbells;
|
||||
};
|
||||
struct tegra_hsp_mailbox *mailboxes;
|
||||
|
||||
static inline struct tegra_hsp *
|
||||
to_tegra_hsp(struct mbox_controller *mbox)
|
||||
{
|
||||
return container_of(mbox, struct tegra_hsp, mbox);
|
||||
}
|
||||
unsigned long mask;
|
||||
};
|
||||
|
||||
static inline u32 tegra_hsp_readl(struct tegra_hsp *hsp, unsigned int offset)
|
||||
{
|
||||
|
|
@ -158,7 +184,7 @@ static irqreturn_t tegra_hsp_doorbell_irq(int irq, void *data)
|
|||
|
||||
spin_lock(&hsp->lock);
|
||||
|
||||
for_each_set_bit(master, &value, hsp->mbox.num_chans) {
|
||||
for_each_set_bit(master, &value, hsp->mbox_db.num_chans) {
|
||||
struct tegra_hsp_doorbell *db;
|
||||
|
||||
db = __tegra_hsp_doorbell_get(hsp, master);
|
||||
|
|
@ -182,6 +208,71 @@ static irqreturn_t tegra_hsp_doorbell_irq(int irq, void *data)
|
|||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static irqreturn_t tegra_hsp_shared_irq(int irq, void *data)
|
||||
{
|
||||
struct tegra_hsp *hsp = data;
|
||||
unsigned long bit, mask;
|
||||
u32 status, value;
|
||||
void *msg;
|
||||
|
||||
status = tegra_hsp_readl(hsp, HSP_INT_IR) & hsp->mask;
|
||||
|
||||
/* process EMPTY interrupts first */
|
||||
mask = (status >> HSP_INT_EMPTY_SHIFT) & HSP_INT_EMPTY_MASK;
|
||||
|
||||
for_each_set_bit(bit, &mask, hsp->num_sm) {
|
||||
struct tegra_hsp_mailbox *mb = &hsp->mailboxes[bit];
|
||||
|
||||
if (mb->producer) {
|
||||
/*
|
||||
* Disable EMPTY interrupts until data is sent with
|
||||
* the next message. These interrupts are level-
|
||||
* triggered, so if we kept them enabled they would
|
||||
* constantly trigger until we next write data into
|
||||
* the message.
|
||||
*/
|
||||
spin_lock(&hsp->lock);
|
||||
|
||||
hsp->mask &= ~BIT(HSP_INT_EMPTY_SHIFT + mb->index);
|
||||
tegra_hsp_writel(hsp, hsp->mask,
|
||||
HSP_INT_IE(hsp->shared_irq));
|
||||
|
||||
spin_unlock(&hsp->lock);
|
||||
|
||||
mbox_chan_txdone(mb->channel.chan, 0);
|
||||
}
|
||||
}
|
||||
|
||||
/* process FULL interrupts */
|
||||
mask = (status >> HSP_INT_FULL_SHIFT) & HSP_INT_FULL_MASK;
|
||||
|
||||
for_each_set_bit(bit, &mask, hsp->num_sm) {
|
||||
struct tegra_hsp_mailbox *mb = &hsp->mailboxes[bit];
|
||||
|
||||
if (!mb->producer) {
|
||||
value = tegra_hsp_channel_readl(&mb->channel,
|
||||
HSP_SM_SHRD_MBOX);
|
||||
value &= ~HSP_SM_SHRD_MBOX_FULL;
|
||||
msg = (void *)(unsigned long)value;
|
||||
mbox_chan_received_data(mb->channel.chan, msg);
|
||||
|
||||
/*
|
||||
* Need to clear all bits here since some producers,
|
||||
* such as TCU, depend on fields in the register
|
||||
* getting cleared by the consumer.
|
||||
*
|
||||
* The mailbox API doesn't give the consumers a way
|
||||
* of doing that explicitly, so we have to make sure
|
||||
* we cover all possible cases.
|
||||
*/
|
||||
tegra_hsp_channel_writel(&mb->channel, 0x0,
|
||||
HSP_SM_SHRD_MBOX);
|
||||
}
|
||||
}
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static struct tegra_hsp_channel *
|
||||
tegra_hsp_doorbell_create(struct tegra_hsp *hsp, const char *name,
|
||||
unsigned int master, unsigned int index)
|
||||
|
|
@ -190,17 +281,17 @@ tegra_hsp_doorbell_create(struct tegra_hsp *hsp, const char *name,
|
|||
unsigned int offset;
|
||||
unsigned long flags;
|
||||
|
||||
db = kzalloc(sizeof(*db), GFP_KERNEL);
|
||||
db = devm_kzalloc(hsp->dev, sizeof(*db), GFP_KERNEL);
|
||||
if (!db)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
offset = (1 + (hsp->num_sm / 2) + hsp->num_ss + hsp->num_as) << 16;
|
||||
offset = (1 + (hsp->num_sm / 2) + hsp->num_ss + hsp->num_as) * SZ_64K;
|
||||
offset += index * 0x100;
|
||||
|
||||
db->channel.regs = hsp->regs + offset;
|
||||
db->channel.hsp = hsp;
|
||||
|
||||
db->name = kstrdup_const(name, GFP_KERNEL);
|
||||
db->name = devm_kstrdup_const(hsp->dev, name, GFP_KERNEL);
|
||||
db->master = master;
|
||||
db->index = index;
|
||||
|
||||
|
|
@ -211,13 +302,6 @@ tegra_hsp_doorbell_create(struct tegra_hsp *hsp, const char *name,
|
|||
return &db->channel;
|
||||
}
|
||||
|
||||
static void __tegra_hsp_doorbell_destroy(struct tegra_hsp_doorbell *db)
|
||||
{
|
||||
list_del(&db->list);
|
||||
kfree_const(db->name);
|
||||
kfree(db);
|
||||
}
|
||||
|
||||
static int tegra_hsp_doorbell_send_data(struct mbox_chan *chan, void *data)
|
||||
{
|
||||
struct tegra_hsp_doorbell *db = chan->con_priv;
|
||||
|
|
@ -235,8 +319,8 @@ static int tegra_hsp_doorbell_startup(struct mbox_chan *chan)
|
|||
unsigned long flags;
|
||||
u32 value;
|
||||
|
||||
if (db->master >= hsp->mbox.num_chans) {
|
||||
dev_err(hsp->mbox.dev,
|
||||
if (db->master >= chan->mbox->num_chans) {
|
||||
dev_err(chan->mbox->dev,
|
||||
"invalid master ID %u for HSP channel\n",
|
||||
db->master);
|
||||
return -EINVAL;
|
||||
|
|
@ -281,46 +365,167 @@ static void tegra_hsp_doorbell_shutdown(struct mbox_chan *chan)
|
|||
spin_unlock_irqrestore(&hsp->lock, flags);
|
||||
}
|
||||
|
||||
static const struct mbox_chan_ops tegra_hsp_doorbell_ops = {
|
||||
static const struct mbox_chan_ops tegra_hsp_db_ops = {
|
||||
.send_data = tegra_hsp_doorbell_send_data,
|
||||
.startup = tegra_hsp_doorbell_startup,
|
||||
.shutdown = tegra_hsp_doorbell_shutdown,
|
||||
};
|
||||
|
||||
static struct mbox_chan *of_tegra_hsp_xlate(struct mbox_controller *mbox,
|
||||
static int tegra_hsp_mailbox_send_data(struct mbox_chan *chan, void *data)
|
||||
{
|
||||
struct tegra_hsp_mailbox *mb = chan->con_priv;
|
||||
struct tegra_hsp *hsp = mb->channel.hsp;
|
||||
unsigned long flags;
|
||||
u32 value;
|
||||
|
||||
if (WARN_ON(!mb->producer))
|
||||
return -EPERM;
|
||||
|
||||
/* copy data and mark mailbox full */
|
||||
value = (u32)(unsigned long)data;
|
||||
value |= HSP_SM_SHRD_MBOX_FULL;
|
||||
|
||||
tegra_hsp_channel_writel(&mb->channel, value, HSP_SM_SHRD_MBOX);
|
||||
|
||||
/* enable EMPTY interrupt for the shared mailbox */
|
||||
spin_lock_irqsave(&hsp->lock, flags);
|
||||
|
||||
hsp->mask |= BIT(HSP_INT_EMPTY_SHIFT + mb->index);
|
||||
tegra_hsp_writel(hsp, hsp->mask, HSP_INT_IE(hsp->shared_irq));
|
||||
|
||||
spin_unlock_irqrestore(&hsp->lock, flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tegra_hsp_mailbox_flush(struct mbox_chan *chan,
|
||||
unsigned long timeout)
|
||||
{
|
||||
struct tegra_hsp_mailbox *mb = chan->con_priv;
|
||||
struct tegra_hsp_channel *ch = &mb->channel;
|
||||
u32 value;
|
||||
|
||||
timeout = jiffies + msecs_to_jiffies(timeout);
|
||||
|
||||
while (time_before(jiffies, timeout)) {
|
||||
value = tegra_hsp_channel_readl(ch, HSP_SM_SHRD_MBOX);
|
||||
if ((value & HSP_SM_SHRD_MBOX_FULL) == 0) {
|
||||
mbox_chan_txdone(chan, 0);
|
||||
return 0;
|
||||
}
|
||||
|
||||
udelay(1);
|
||||
}
|
||||
|
||||
return -ETIME;
|
||||
}
|
||||
|
||||
static int tegra_hsp_mailbox_startup(struct mbox_chan *chan)
|
||||
{
|
||||
struct tegra_hsp_mailbox *mb = chan->con_priv;
|
||||
struct tegra_hsp_channel *ch = &mb->channel;
|
||||
struct tegra_hsp *hsp = mb->channel.hsp;
|
||||
unsigned long flags;
|
||||
|
||||
chan->txdone_method = TXDONE_BY_IRQ;
|
||||
|
||||
/*
|
||||
* Shared mailboxes start out as consumers by default. FULL and EMPTY
|
||||
* interrupts are coalesced at the same shared interrupt.
|
||||
*
|
||||
* Keep EMPTY interrupts disabled at startup and only enable them when
|
||||
* the mailbox is actually full. This is required because the FULL and
|
||||
* EMPTY interrupts are level-triggered, so keeping EMPTY interrupts
|
||||
* enabled all the time would cause an interrupt storm while mailboxes
|
||||
* are idle.
|
||||
*/
|
||||
|
||||
spin_lock_irqsave(&hsp->lock, flags);
|
||||
|
||||
if (mb->producer)
|
||||
hsp->mask &= ~BIT(HSP_INT_EMPTY_SHIFT + mb->index);
|
||||
else
|
||||
hsp->mask |= BIT(HSP_INT_FULL_SHIFT + mb->index);
|
||||
|
||||
tegra_hsp_writel(hsp, hsp->mask, HSP_INT_IE(hsp->shared_irq));
|
||||
|
||||
spin_unlock_irqrestore(&hsp->lock, flags);
|
||||
|
||||
if (hsp->soc->has_per_mb_ie) {
|
||||
if (mb->producer)
|
||||
tegra_hsp_channel_writel(ch, 0x0,
|
||||
HSP_SM_SHRD_MBOX_EMPTY_INT_IE);
|
||||
else
|
||||
tegra_hsp_channel_writel(ch, 0x1,
|
||||
HSP_SM_SHRD_MBOX_FULL_INT_IE);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void tegra_hsp_mailbox_shutdown(struct mbox_chan *chan)
|
||||
{
|
||||
struct tegra_hsp_mailbox *mb = chan->con_priv;
|
||||
struct tegra_hsp_channel *ch = &mb->channel;
|
||||
struct tegra_hsp *hsp = mb->channel.hsp;
|
||||
unsigned long flags;
|
||||
|
||||
if (hsp->soc->has_per_mb_ie) {
|
||||
if (mb->producer)
|
||||
tegra_hsp_channel_writel(ch, 0x0,
|
||||
HSP_SM_SHRD_MBOX_EMPTY_INT_IE);
|
||||
else
|
||||
tegra_hsp_channel_writel(ch, 0x0,
|
||||
HSP_SM_SHRD_MBOX_FULL_INT_IE);
|
||||
}
|
||||
|
||||
spin_lock_irqsave(&hsp->lock, flags);
|
||||
|
||||
if (mb->producer)
|
||||
hsp->mask &= ~BIT(HSP_INT_EMPTY_SHIFT + mb->index);
|
||||
else
|
||||
hsp->mask &= ~BIT(HSP_INT_FULL_SHIFT + mb->index);
|
||||
|
||||
tegra_hsp_writel(hsp, hsp->mask, HSP_INT_IE(hsp->shared_irq));
|
||||
|
||||
spin_unlock_irqrestore(&hsp->lock, flags);
|
||||
}
|
||||
|
||||
static const struct mbox_chan_ops tegra_hsp_sm_ops = {
|
||||
.send_data = tegra_hsp_mailbox_send_data,
|
||||
.flush = tegra_hsp_mailbox_flush,
|
||||
.startup = tegra_hsp_mailbox_startup,
|
||||
.shutdown = tegra_hsp_mailbox_shutdown,
|
||||
};
|
||||
|
||||
static struct mbox_chan *tegra_hsp_db_xlate(struct mbox_controller *mbox,
|
||||
const struct of_phandle_args *args)
|
||||
{
|
||||
struct tegra_hsp *hsp = container_of(mbox, struct tegra_hsp, mbox_db);
|
||||
unsigned int type = args->args[0], master = args->args[1];
|
||||
struct tegra_hsp_channel *channel = ERR_PTR(-ENODEV);
|
||||
struct tegra_hsp *hsp = to_tegra_hsp(mbox);
|
||||
unsigned int type = args->args[0];
|
||||
unsigned int master = args->args[1];
|
||||
struct tegra_hsp_doorbell *db;
|
||||
struct mbox_chan *chan;
|
||||
unsigned long flags;
|
||||
unsigned int i;
|
||||
|
||||
switch (type) {
|
||||
case TEGRA_HSP_MBOX_TYPE_DB:
|
||||
db = tegra_hsp_doorbell_get(hsp, master);
|
||||
if (db)
|
||||
channel = &db->channel;
|
||||
if (type != TEGRA_HSP_MBOX_TYPE_DB || !hsp->doorbell_irq)
|
||||
return ERR_PTR(-ENODEV);
|
||||
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
db = tegra_hsp_doorbell_get(hsp, master);
|
||||
if (db)
|
||||
channel = &db->channel;
|
||||
|
||||
if (IS_ERR(channel))
|
||||
return ERR_CAST(channel);
|
||||
|
||||
spin_lock_irqsave(&hsp->lock, flags);
|
||||
|
||||
for (i = 0; i < hsp->mbox.num_chans; i++) {
|
||||
chan = &hsp->mbox.chans[i];
|
||||
for (i = 0; i < mbox->num_chans; i++) {
|
||||
chan = &mbox->chans[i];
|
||||
if (!chan->con_priv) {
|
||||
chan->con_priv = channel;
|
||||
channel->chan = chan;
|
||||
chan->con_priv = db;
|
||||
break;
|
||||
}
|
||||
|
||||
|
|
@ -332,17 +537,27 @@ static struct mbox_chan *of_tegra_hsp_xlate(struct mbox_controller *mbox,
|
|||
return chan ?: ERR_PTR(-EBUSY);
|
||||
}
|
||||
|
||||
static void tegra_hsp_remove_doorbells(struct tegra_hsp *hsp)
|
||||
static struct mbox_chan *tegra_hsp_sm_xlate(struct mbox_controller *mbox,
|
||||
const struct of_phandle_args *args)
|
||||
{
|
||||
struct tegra_hsp_doorbell *db, *tmp;
|
||||
unsigned long flags;
|
||||
struct tegra_hsp *hsp = container_of(mbox, struct tegra_hsp, mbox_sm);
|
||||
unsigned int type = args->args[0], index;
|
||||
struct tegra_hsp_mailbox *mb;
|
||||
|
||||
spin_lock_irqsave(&hsp->lock, flags);
|
||||
index = args->args[1] & TEGRA_HSP_SM_MASK;
|
||||
|
||||
list_for_each_entry_safe(db, tmp, &hsp->doorbells, list)
|
||||
__tegra_hsp_doorbell_destroy(db);
|
||||
if (type != TEGRA_HSP_MBOX_TYPE_SM || !hsp->shared_irqs ||
|
||||
index >= hsp->num_sm)
|
||||
return ERR_PTR(-ENODEV);
|
||||
|
||||
spin_unlock_irqrestore(&hsp->lock, flags);
|
||||
mb = &hsp->mailboxes[index];
|
||||
|
||||
if ((args->args[1] & TEGRA_HSP_SM_FLAG_TX) == 0)
|
||||
mb->producer = false;
|
||||
else
|
||||
mb->producer = true;
|
||||
|
||||
return mb->channel.chan;
|
||||
}
|
||||
|
||||
static int tegra_hsp_add_doorbells(struct tegra_hsp *hsp)
|
||||
|
|
@ -353,10 +568,8 @@ static int tegra_hsp_add_doorbells(struct tegra_hsp *hsp)
|
|||
while (map->name) {
|
||||
channel = tegra_hsp_doorbell_create(hsp, map->name,
|
||||
map->master, map->index);
|
||||
if (IS_ERR(channel)) {
|
||||
tegra_hsp_remove_doorbells(hsp);
|
||||
if (IS_ERR(channel))
|
||||
return PTR_ERR(channel);
|
||||
}
|
||||
|
||||
map++;
|
||||
}
|
||||
|
|
@ -364,10 +577,70 @@ static int tegra_hsp_add_doorbells(struct tegra_hsp *hsp)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int tegra_hsp_add_mailboxes(struct tegra_hsp *hsp, struct device *dev)
|
||||
{
|
||||
int i;
|
||||
|
||||
hsp->mailboxes = devm_kcalloc(dev, hsp->num_sm, sizeof(*hsp->mailboxes),
|
||||
GFP_KERNEL);
|
||||
if (!hsp->mailboxes)
|
||||
return -ENOMEM;
|
||||
|
||||
for (i = 0; i < hsp->num_sm; i++) {
|
||||
struct tegra_hsp_mailbox *mb = &hsp->mailboxes[i];
|
||||
|
||||
mb->index = i;
|
||||
|
||||
mb->channel.hsp = hsp;
|
||||
mb->channel.regs = hsp->regs + SZ_64K + i * SZ_32K;
|
||||
mb->channel.chan = &hsp->mbox_sm.chans[i];
|
||||
mb->channel.chan->con_priv = mb;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tegra_hsp_request_shared_irq(struct tegra_hsp *hsp)
|
||||
{
|
||||
unsigned int i, irq = 0;
|
||||
int err;
|
||||
|
||||
for (i = 0; i < hsp->num_si; i++) {
|
||||
irq = hsp->shared_irqs[i];
|
||||
if (irq <= 0)
|
||||
continue;
|
||||
|
||||
err = devm_request_irq(hsp->dev, irq, tegra_hsp_shared_irq, 0,
|
||||
dev_name(hsp->dev), hsp);
|
||||
if (err < 0) {
|
||||
dev_err(hsp->dev, "failed to request interrupt: %d\n",
|
||||
err);
|
||||
continue;
|
||||
}
|
||||
|
||||
hsp->shared_irq = i;
|
||||
|
||||
/* disable all interrupts */
|
||||
tegra_hsp_writel(hsp, 0, HSP_INT_IE(hsp->shared_irq));
|
||||
|
||||
dev_dbg(hsp->dev, "interrupt requested: %u\n", irq);
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
if (i == hsp->num_si) {
|
||||
dev_err(hsp->dev, "failed to find available interrupt\n");
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tegra_hsp_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct tegra_hsp *hsp;
|
||||
struct resource *res;
|
||||
unsigned int i;
|
||||
u32 value;
|
||||
int err;
|
||||
|
||||
|
|
@ -375,6 +648,7 @@ static int tegra_hsp_probe(struct platform_device *pdev)
|
|||
if (!hsp)
|
||||
return -ENOMEM;
|
||||
|
||||
hsp->dev = &pdev->dev;
|
||||
hsp->soc = of_device_get_match_data(&pdev->dev);
|
||||
INIT_LIST_HEAD(&hsp->doorbells);
|
||||
spin_lock_init(&hsp->lock);
|
||||
|
|
@ -392,62 +666,136 @@ static int tegra_hsp_probe(struct platform_device *pdev)
|
|||
hsp->num_si = (value >> HSP_nSI_SHIFT) & HSP_nINT_MASK;
|
||||
|
||||
err = platform_get_irq_byname(pdev, "doorbell");
|
||||
if (err >= 0)
|
||||
hsp->doorbell_irq = err;
|
||||
|
||||
if (hsp->num_si > 0) {
|
||||
unsigned int count = 0;
|
||||
|
||||
hsp->shared_irqs = devm_kcalloc(&pdev->dev, hsp->num_si,
|
||||
sizeof(*hsp->shared_irqs),
|
||||
GFP_KERNEL);
|
||||
if (!hsp->shared_irqs)
|
||||
return -ENOMEM;
|
||||
|
||||
for (i = 0; i < hsp->num_si; i++) {
|
||||
char *name;
|
||||
|
||||
name = kasprintf(GFP_KERNEL, "shared%u", i);
|
||||
if (!name)
|
||||
return -ENOMEM;
|
||||
|
||||
err = platform_get_irq_byname(pdev, name);
|
||||
if (err >= 0) {
|
||||
hsp->shared_irqs[i] = err;
|
||||
count++;
|
||||
}
|
||||
|
||||
kfree(name);
|
||||
}
|
||||
|
||||
if (count == 0) {
|
||||
devm_kfree(&pdev->dev, hsp->shared_irqs);
|
||||
hsp->shared_irqs = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/* setup the doorbell controller */
|
||||
hsp->mbox_db.of_xlate = tegra_hsp_db_xlate;
|
||||
hsp->mbox_db.num_chans = 32;
|
||||
hsp->mbox_db.dev = &pdev->dev;
|
||||
hsp->mbox_db.ops = &tegra_hsp_db_ops;
|
||||
|
||||
hsp->mbox_db.chans = devm_kcalloc(&pdev->dev, hsp->mbox_db.num_chans,
|
||||
sizeof(*hsp->mbox_db.chans),
|
||||
GFP_KERNEL);
|
||||
if (!hsp->mbox_db.chans)
|
||||
return -ENOMEM;
|
||||
|
||||
if (hsp->doorbell_irq) {
|
||||
err = tegra_hsp_add_doorbells(hsp);
|
||||
if (err < 0) {
|
||||
dev_err(&pdev->dev, "failed to add doorbells: %d\n",
|
||||
err);
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
err = devm_mbox_controller_register(&pdev->dev, &hsp->mbox_db);
|
||||
if (err < 0) {
|
||||
dev_err(&pdev->dev, "failed to get doorbell IRQ: %d\n", err);
|
||||
dev_err(&pdev->dev, "failed to register doorbell mailbox: %d\n",
|
||||
err);
|
||||
return err;
|
||||
}
|
||||
|
||||
hsp->irq = err;
|
||||
/* setup the shared mailbox controller */
|
||||
hsp->mbox_sm.of_xlate = tegra_hsp_sm_xlate;
|
||||
hsp->mbox_sm.num_chans = hsp->num_sm;
|
||||
hsp->mbox_sm.dev = &pdev->dev;
|
||||
hsp->mbox_sm.ops = &tegra_hsp_sm_ops;
|
||||
|
||||
hsp->mbox.of_xlate = of_tegra_hsp_xlate;
|
||||
hsp->mbox.num_chans = 32;
|
||||
hsp->mbox.dev = &pdev->dev;
|
||||
hsp->mbox.txdone_irq = false;
|
||||
hsp->mbox.txdone_poll = false;
|
||||
hsp->mbox.ops = &tegra_hsp_doorbell_ops;
|
||||
|
||||
hsp->mbox.chans = devm_kcalloc(&pdev->dev, hsp->mbox.num_chans,
|
||||
sizeof(*hsp->mbox.chans),
|
||||
GFP_KERNEL);
|
||||
if (!hsp->mbox.chans)
|
||||
hsp->mbox_sm.chans = devm_kcalloc(&pdev->dev, hsp->mbox_sm.num_chans,
|
||||
sizeof(*hsp->mbox_sm.chans),
|
||||
GFP_KERNEL);
|
||||
if (!hsp->mbox_sm.chans)
|
||||
return -ENOMEM;
|
||||
|
||||
err = tegra_hsp_add_doorbells(hsp);
|
||||
if (hsp->shared_irqs) {
|
||||
err = tegra_hsp_add_mailboxes(hsp, &pdev->dev);
|
||||
if (err < 0) {
|
||||
dev_err(&pdev->dev, "failed to add mailboxes: %d\n",
|
||||
err);
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
err = devm_mbox_controller_register(&pdev->dev, &hsp->mbox_sm);
|
||||
if (err < 0) {
|
||||
dev_err(&pdev->dev, "failed to add doorbells: %d\n", err);
|
||||
dev_err(&pdev->dev, "failed to register shared mailbox: %d\n",
|
||||
err);
|
||||
return err;
|
||||
}
|
||||
|
||||
platform_set_drvdata(pdev, hsp);
|
||||
|
||||
err = mbox_controller_register(&hsp->mbox);
|
||||
if (err) {
|
||||
dev_err(&pdev->dev, "failed to register mailbox: %d\n", err);
|
||||
tegra_hsp_remove_doorbells(hsp);
|
||||
return err;
|
||||
if (hsp->doorbell_irq) {
|
||||
err = devm_request_irq(&pdev->dev, hsp->doorbell_irq,
|
||||
tegra_hsp_doorbell_irq, IRQF_NO_SUSPEND,
|
||||
dev_name(&pdev->dev), hsp);
|
||||
if (err < 0) {
|
||||
dev_err(&pdev->dev,
|
||||
"failed to request doorbell IRQ#%u: %d\n",
|
||||
hsp->doorbell_irq, err);
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
err = devm_request_irq(&pdev->dev, hsp->irq, tegra_hsp_doorbell_irq,
|
||||
IRQF_NO_SUSPEND, dev_name(&pdev->dev), hsp);
|
||||
if (err < 0) {
|
||||
dev_err(&pdev->dev, "failed to request IRQ#%u: %d\n",
|
||||
hsp->irq, err);
|
||||
return err;
|
||||
if (hsp->shared_irqs) {
|
||||
err = tegra_hsp_request_shared_irq(hsp);
|
||||
if (err < 0)
|
||||
return err;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tegra_hsp_remove(struct platform_device *pdev)
|
||||
static int tegra_hsp_resume(struct device *dev)
|
||||
{
|
||||
struct tegra_hsp *hsp = platform_get_drvdata(pdev);
|
||||
struct tegra_hsp *hsp = dev_get_drvdata(dev);
|
||||
unsigned int i;
|
||||
|
||||
mbox_controller_unregister(&hsp->mbox);
|
||||
tegra_hsp_remove_doorbells(hsp);
|
||||
for (i = 0; i < hsp->num_sm; i++) {
|
||||
struct tegra_hsp_mailbox *mb = &hsp->mailboxes[i];
|
||||
|
||||
if (mb->channel.chan->cl)
|
||||
tegra_hsp_mailbox_startup(mb->channel.chan);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static SIMPLE_DEV_PM_OPS(tegra_hsp_pm_ops, NULL, tegra_hsp_resume);
|
||||
|
||||
static const struct tegra_hsp_db_map tegra186_hsp_db_map[] = {
|
||||
{ "ccplex", TEGRA_HSP_DB_MASTER_CCPLEX, HSP_DB_CCPLEX, },
|
||||
{ "bpmp", TEGRA_HSP_DB_MASTER_BPMP, HSP_DB_BPMP, },
|
||||
|
|
@ -456,10 +804,17 @@ static const struct tegra_hsp_db_map tegra186_hsp_db_map[] = {
|
|||
|
||||
static const struct tegra_hsp_soc tegra186_hsp_soc = {
|
||||
.map = tegra186_hsp_db_map,
|
||||
.has_per_mb_ie = false,
|
||||
};
|
||||
|
||||
static const struct tegra_hsp_soc tegra194_hsp_soc = {
|
||||
.map = tegra186_hsp_db_map,
|
||||
.has_per_mb_ie = true,
|
||||
};
|
||||
|
||||
static const struct of_device_id tegra_hsp_match[] = {
|
||||
{ .compatible = "nvidia,tegra186-hsp", .data = &tegra186_hsp_soc },
|
||||
{ .compatible = "nvidia,tegra194-hsp", .data = &tegra194_hsp_soc },
|
||||
{ }
|
||||
};
|
||||
|
||||
|
|
@ -467,9 +822,9 @@ static struct platform_driver tegra_hsp_driver = {
|
|||
.driver = {
|
||||
.name = "tegra-hsp",
|
||||
.of_match_table = tegra_hsp_match,
|
||||
.pm = &tegra_hsp_pm_ops,
|
||||
},
|
||||
.probe = tegra_hsp_probe,
|
||||
.remove = tegra_hsp_remove,
|
||||
};
|
||||
|
||||
static int __init tegra_hsp_init(void)
|
||||
|
|
|
|||
|
|
@ -547,7 +547,7 @@ static struct mbox_chan *ti_msgmgr_of_xlate(struct mbox_controller *mbox,
|
|||
}
|
||||
|
||||
if (d->is_sproxy) {
|
||||
if (req_pid > d->num_valid_queues)
|
||||
if (req_pid >= d->num_valid_queues)
|
||||
goto err;
|
||||
qinst = &inst->qinsts[req_pid];
|
||||
return qinst->chan;
|
||||
|
|
@ -817,26 +817,15 @@ static int ti_msgmgr_probe(struct platform_device *pdev)
|
|||
mbox->of_xlate = ti_msgmgr_of_xlate;
|
||||
|
||||
platform_set_drvdata(pdev, inst);
|
||||
ret = mbox_controller_register(mbox);
|
||||
ret = devm_mbox_controller_register(dev, mbox);
|
||||
if (ret)
|
||||
dev_err(dev, "Failed to register mbox_controller(%d)\n", ret);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int ti_msgmgr_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct ti_msgmgr_inst *inst;
|
||||
|
||||
inst = platform_get_drvdata(pdev);
|
||||
mbox_controller_unregister(&inst->mbox);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver ti_msgmgr_driver = {
|
||||
.probe = ti_msgmgr_probe,
|
||||
.remove = ti_msgmgr_remove,
|
||||
.driver = {
|
||||
.name = "ti-msgmgr",
|
||||
.of_match_table = of_match_ptr(ti_msgmgr_of_match),
|
||||
|
|
|
|||
|
|
@ -22,4 +22,15 @@
|
|||
#define TEGRA_HSP_DB_MASTER_CCPLEX 17
|
||||
#define TEGRA_HSP_DB_MASTER_BPMP 19
|
||||
|
||||
/*
|
||||
* Shared mailboxes are unidirectional, so the direction needs to be specified
|
||||
* in the device tree.
|
||||
*/
|
||||
#define TEGRA_HSP_SM_MASK 0x00ffffff
|
||||
#define TEGRA_HSP_SM_FLAG_RX (0 << 31)
|
||||
#define TEGRA_HSP_SM_FLAG_TX (1 << 31)
|
||||
|
||||
#define TEGRA_HSP_SM_RX(x) (TEGRA_HSP_SM_FLAG_RX | ((x) & TEGRA_HSP_SM_MASK))
|
||||
#define TEGRA_HSP_SM_TX(x) (TEGRA_HSP_SM_FLAG_TX | ((x) & TEGRA_HSP_SM_MASK))
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -44,6 +44,7 @@ struct mbox_chan *mbox_request_channel_byname(struct mbox_client *cl,
|
|||
const char *name);
|
||||
struct mbox_chan *mbox_request_channel(struct mbox_client *cl, int index);
|
||||
int mbox_send_message(struct mbox_chan *chan, void *mssg);
|
||||
int mbox_flush(struct mbox_chan *chan, unsigned long timeout);
|
||||
void mbox_client_txdone(struct mbox_chan *chan, int r); /* atomic */
|
||||
bool mbox_client_peek_data(struct mbox_chan *chan); /* atomic */
|
||||
void mbox_free_channel(struct mbox_chan *chan); /* may sleep */
|
||||
|
|
|
|||
|
|
@ -24,6 +24,9 @@ struct mbox_chan;
|
|||
* transmission of data is reported by the controller via
|
||||
* mbox_chan_txdone (if it has some TX ACK irq). It must not
|
||||
* sleep.
|
||||
* @flush: Called when a client requests transmissions to be blocking but
|
||||
* the context doesn't allow sleeping. Typically the controller
|
||||
* will implement a busy loop waiting for the data to flush out.
|
||||
* @startup: Called when a client requests the chan. The controller
|
||||
* could ask clients for additional parameters of communication
|
||||
* to be provided via client's chan_data. This call may
|
||||
|
|
@ -46,6 +49,7 @@ struct mbox_chan;
|
|||
*/
|
||||
struct mbox_chan_ops {
|
||||
int (*send_data)(struct mbox_chan *chan, void *data);
|
||||
int (*flush)(struct mbox_chan *chan, unsigned long timeout);
|
||||
int (*startup)(struct mbox_chan *chan);
|
||||
void (*shutdown)(struct mbox_chan *chan);
|
||||
bool (*last_tx_done)(struct mbox_chan *chan);
|
||||
|
|
@ -131,4 +135,9 @@ void mbox_controller_unregister(struct mbox_controller *mbox); /* can sleep */
|
|||
void mbox_chan_received_data(struct mbox_chan *chan, void *data); /* atomic */
|
||||
void mbox_chan_txdone(struct mbox_chan *chan, int r); /* atomic */
|
||||
|
||||
int devm_mbox_controller_register(struct device *dev,
|
||||
struct mbox_controller *mbox);
|
||||
void devm_mbox_controller_unregister(struct device *dev,
|
||||
struct mbox_controller *mbox);
|
||||
|
||||
#endif /* __MAILBOX_CONTROLLER_H */
|
||||
|
|
|
|||
Loading…
Reference in a new issue