Input: rotary_encoder - add wake up support
This patch adds wake up support to GPIO rotary encoders. Signed-off-by: Sylvain Rochet <sylvain.rochet@finsecur.com> Reviewed-by: Johan Hovold <johan@kernel.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
parent
027c71bbae
commit
47ec6e5a5f
|
@ -15,6 +15,7 @@ Optional properties:
|
||||||
- rotary-encoder,rollover: Automatic rollove when the rotary value becomes
|
- rotary-encoder,rollover: Automatic rollove when the rotary value becomes
|
||||||
greater than the specified steps or smaller than 0. For absolute axis only.
|
greater than the specified steps or smaller than 0. For absolute axis only.
|
||||||
- rotary-encoder,half-period: Makes the driver work on half-period mode.
|
- rotary-encoder,half-period: Makes the driver work on half-period mode.
|
||||||
|
- wakeup-source: Boolean, rotary encoder can wake up the system.
|
||||||
|
|
||||||
See Documentation/input/rotary-encoder.txt for more information.
|
See Documentation/input/rotary-encoder.txt for more information.
|
||||||
|
|
||||||
|
|
|
@ -109,6 +109,7 @@ static struct rotary_encoder_platform_data my_rotary_encoder_info = {
|
||||||
.inverted_a = 0,
|
.inverted_a = 0,
|
||||||
.inverted_b = 0,
|
.inverted_b = 0,
|
||||||
.half_period = false,
|
.half_period = false,
|
||||||
|
.wakeup_source = false,
|
||||||
};
|
};
|
||||||
|
|
||||||
static struct platform_device rotary_encoder_device = {
|
static struct platform_device rotary_encoder_device = {
|
||||||
|
|
|
@ -26,6 +26,7 @@
|
||||||
#include <linux/of.h>
|
#include <linux/of.h>
|
||||||
#include <linux/of_platform.h>
|
#include <linux/of_platform.h>
|
||||||
#include <linux/of_gpio.h>
|
#include <linux/of_gpio.h>
|
||||||
|
#include <linux/pm.h>
|
||||||
|
|
||||||
#define DRV_NAME "rotary-encoder"
|
#define DRV_NAME "rotary-encoder"
|
||||||
|
|
||||||
|
@ -180,6 +181,8 @@ static struct rotary_encoder_platform_data *rotary_encoder_parse_dt(struct devic
|
||||||
"rotary-encoder,rollover", NULL);
|
"rotary-encoder,rollover", NULL);
|
||||||
pdata->half_period = !!of_get_property(np,
|
pdata->half_period = !!of_get_property(np,
|
||||||
"rotary-encoder,half-period", NULL);
|
"rotary-encoder,half-period", NULL);
|
||||||
|
pdata->wakeup_source = !!of_get_property(np,
|
||||||
|
"wakeup-source", NULL);
|
||||||
|
|
||||||
return pdata;
|
return pdata;
|
||||||
}
|
}
|
||||||
|
@ -280,6 +283,8 @@ static int rotary_encoder_probe(struct platform_device *pdev)
|
||||||
goto exit_free_irq_b;
|
goto exit_free_irq_b;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
device_init_wakeup(&pdev->dev, pdata->wakeup_source);
|
||||||
|
|
||||||
platform_set_drvdata(pdev, encoder);
|
platform_set_drvdata(pdev, encoder);
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
|
@ -306,6 +311,8 @@ static int rotary_encoder_remove(struct platform_device *pdev)
|
||||||
struct rotary_encoder *encoder = platform_get_drvdata(pdev);
|
struct rotary_encoder *encoder = platform_get_drvdata(pdev);
|
||||||
const struct rotary_encoder_platform_data *pdata = encoder->pdata;
|
const struct rotary_encoder_platform_data *pdata = encoder->pdata;
|
||||||
|
|
||||||
|
device_init_wakeup(&pdev->dev, false);
|
||||||
|
|
||||||
free_irq(encoder->irq_a, encoder);
|
free_irq(encoder->irq_a, encoder);
|
||||||
free_irq(encoder->irq_b, encoder);
|
free_irq(encoder->irq_b, encoder);
|
||||||
gpio_free(pdata->gpio_a);
|
gpio_free(pdata->gpio_a);
|
||||||
|
@ -320,11 +327,41 @@ static int rotary_encoder_remove(struct platform_device *pdev)
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#ifdef CONFIG_PM_SLEEP
|
||||||
|
static int rotary_encoder_suspend(struct device *dev)
|
||||||
|
{
|
||||||
|
struct rotary_encoder *encoder = dev_get_drvdata(dev);
|
||||||
|
|
||||||
|
if (device_may_wakeup(dev)) {
|
||||||
|
enable_irq_wake(encoder->irq_a);
|
||||||
|
enable_irq_wake(encoder->irq_b);
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int rotary_encoder_resume(struct device *dev)
|
||||||
|
{
|
||||||
|
struct rotary_encoder *encoder = dev_get_drvdata(dev);
|
||||||
|
|
||||||
|
if (device_may_wakeup(dev)) {
|
||||||
|
disable_irq_wake(encoder->irq_a);
|
||||||
|
disable_irq_wake(encoder->irq_b);
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
static SIMPLE_DEV_PM_OPS(rotary_encoder_pm_ops,
|
||||||
|
rotary_encoder_suspend, rotary_encoder_resume);
|
||||||
|
|
||||||
static struct platform_driver rotary_encoder_driver = {
|
static struct platform_driver rotary_encoder_driver = {
|
||||||
.probe = rotary_encoder_probe,
|
.probe = rotary_encoder_probe,
|
||||||
.remove = rotary_encoder_remove,
|
.remove = rotary_encoder_remove,
|
||||||
.driver = {
|
.driver = {
|
||||||
.name = DRV_NAME,
|
.name = DRV_NAME,
|
||||||
|
.pm = &rotary_encoder_pm_ops,
|
||||||
.of_match_table = of_match_ptr(rotary_encoder_of_match),
|
.of_match_table = of_match_ptr(rotary_encoder_of_match),
|
||||||
}
|
}
|
||||||
};
|
};
|
||||||
|
|
|
@ -11,6 +11,7 @@ struct rotary_encoder_platform_data {
|
||||||
bool relative_axis;
|
bool relative_axis;
|
||||||
bool rollover;
|
bool rollover;
|
||||||
bool half_period;
|
bool half_period;
|
||||||
|
bool wakeup_source;
|
||||||
};
|
};
|
||||||
|
|
||||||
#endif /* __ROTARY_ENCODER_H__ */
|
#endif /* __ROTARY_ENCODER_H__ */
|
||||||
|
|
Loading…
Reference in a new issue