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soc: soundwire: Add support for GPIO interrupt path

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In trinket target, interrupt for wakeup is provided via
chip TLMM. Add required support to handle wakeup
interrupt on SWR data line triggered over this TLMM line.

Change-Id: I7fb6d7009a6271d54d0f11f99930b0d039f57129
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>
This commit is contained in:
Laxminath Kasam 2019-01-10 14:43:03 +05:30 committed by Meng Wang
parent 452772abf9
commit a60239e354
1 changed files with 21 additions and 8 deletions
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29
soc/swr-mstr-ctrl.c
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@ -14,6 +14,8 @@
#include <linux/kthread.h>
#include <linux/bitops.h>
#include <linux/clk.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
#include <linux/debugfs.h>
@ -2168,17 +2170,28 @@ static int swrm_device_down(struct device *dev)
int swrm_register_wake_irq(struct swr_mstr_ctrl *swrm)
{
int ret = 0;
int irq, dir_apps_irq;
if (!swrm->ipc_wakeup) {
swrm->wake_irq = platform_get_irq_byname(swrm->pdev,
"swr_wake_irq");
if (swrm->wake_irq < 0) {
dev_err(swrm->dev,
"%s() error getting wake irq handle: %d\n",
__func__, swrm->wake_irq);
return -EINVAL;
irq = of_get_named_gpio(swrm->dev->of_node,
"qcom,swr-wakeup-irq", 0);
if (gpio_is_valid(irq)) {
swrm->wake_irq = gpio_to_irq(irq);
if (swrm->wake_irq < 0) {
dev_err(swrm->dev,
"Unable to configure irq\n");
return swrm->wake_irq;
}
} else {
dir_apps_irq = platform_get_irq_byname(swrm->pdev,
"swr_wake_irq");
if (dir_apps_irq < 0) {
dev_err(swrm->dev,
"TLMM connect gpio not found\n");
return -EINVAL;
}
swrm->wake_irq = dir_apps_irq;
}
ret = request_threaded_irq(swrm->wake_irq, NULL,
swrm_wakeup_interrupt,
IRQF_TRIGGER_HIGH | IRQF_ONESHOT,