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Input: omap4-keypad - set up interrupt as wakeup source 

Marking main interrupt as wakeup interrupt in probe allows us to drop
custom suspend/resume methods whose only purpose was to configure interrupt
for waking up the system.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2020-11-22 17:52:32 -08:00
parent 278b13ce3a
commit c1b46cd4df
1 changed files with 8 additions and 35 deletions
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43
drivers/input/keyboard/omap4-keypad.c
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@ -18,6 +18,7 @@
#include <linux/input/matrix_keypad.h> #include <linux/input/matrix_keypad.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/pm_runtime.h> #include <linux/pm_runtime.h>
#include <linux/pm_wakeirq.h>
/* OMAP4 registers */ /* OMAP4 registers */
#define OMAP4_KBD_REVISION 0x00 #define OMAP4_KBD_REVISION 0x00
@ -69,7 +70,6 @@ struct omap4_keypad {
struct input_dev *input; struct input_dev *input;
void __iomem *base; void __iomem *base;
bool irq_wake_enabled;
unsigned int irq; unsigned int irq;
unsigned int rows; unsigned int rows;
@ -376,6 +376,11 @@ static int omap4_keypad_probe(struct platform_device *pdev)
} }
device_init_wakeup(&pdev->dev, true); device_init_wakeup(&pdev->dev, true);
error = dev_pm_set_wake_irq(&pdev->dev, keypad_data->irq);
if (error)
dev_warn(&pdev->dev,
"failed to set up wakeup irq: %d\n", error);
platform_set_drvdata(pdev, keypad_data); platform_set_drvdata(pdev, keypad_data);
return 0; return 0;
@ -401,6 +406,8 @@ static int omap4_keypad_remove(struct platform_device *pdev)
struct omap4_keypad *keypad_data = platform_get_drvdata(pdev); struct omap4_keypad *keypad_data = platform_get_drvdata(pdev);
struct resource *res; struct resource *res;
dev_pm_clear_wake_irq(&pdev->dev);
free_irq(keypad_data->irq, keypad_data); free_irq(keypad_data->irq, keypad_data);
pm_runtime_disable(&pdev->dev); pm_runtime_disable(&pdev->dev);
@ -424,45 +431,11 @@ static const struct of_device_id omap_keypad_dt_match[] = {
}; };
MODULE_DEVICE_TABLE(of, omap_keypad_dt_match); MODULE_DEVICE_TABLE(of, omap_keypad_dt_match);
#ifdef CONFIG_PM_SLEEP
static int omap4_keypad_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct omap4_keypad *keypad_data = platform_get_drvdata(pdev);
int error;
if (device_may_wakeup(&pdev->dev)) {
error = enable_irq_wake(keypad_data->irq);
if (!error)
keypad_data->irq_wake_enabled = true;
}
return 0;
}
static int omap4_keypad_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct omap4_keypad *keypad_data = platform_get_drvdata(pdev);
if (device_may_wakeup(&pdev->dev) && keypad_data->irq_wake_enabled) {
disable_irq_wake(keypad_data->irq);
keypad_data->irq_wake_enabled = false;
}
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(omap4_keypad_pm_ops,
omap4_keypad_suspend, omap4_keypad_resume);
static struct platform_driver omap4_keypad_driver = { static struct platform_driver omap4_keypad_driver = {
.probe = omap4_keypad_probe, .probe = omap4_keypad_probe,
.remove = omap4_keypad_remove, .remove = omap4_keypad_remove,
.driver = { .driver = {
.name = "omap4-keypad", .name = "omap4-keypad",
.pm = &omap4_keypad_pm_ops,
.of_match_table = omap_keypad_dt_match, .of_match_table = omap_keypad_dt_match,
}, },
}; };