* [PATCH v2] extcon: gpio: Add power resume support
@ 2013-12-27 5:40 rjying
2014-01-07 2:26 ` Barry Song
2014-01-07 2:52 ` Chanwoo Choi
0 siblings, 2 replies; 3+ messages in thread
From: rjying @ 2013-12-27 5:40 UTC (permalink / raw)
To: linux-arm-kernel
From: Rongjun Ying <rongjun.ying@csr.com>
When system on the suspend state, Some SoC can't get gpio interrupt.
After system resume, need send extcon uevent to userspace.
Signed-off-by: Rongjun Ying <rongjun.ying@csr.com>
---
-v2: Add lost_sleep_irq flags.
drivers/extcon/extcon-gpio.c | 20 ++++++++++++++++++++
include/linux/extcon/extcon-gpio.h | 1 +
2 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c
index 7e0dff5..fde52c1 100644
--- a/drivers/extcon/extcon-gpio.c
+++ b/drivers/extcon/extcon-gpio.c
@@ -40,6 +40,7 @@ struct gpio_extcon_data {
int irq;
struct delayed_work work;
unsigned long debounce_jiffies;
+ bool lost_sleep_irq;
};
static void gpio_extcon_work(struct work_struct *work)
@@ -103,6 +104,7 @@ static int gpio_extcon_probe(struct platform_device *pdev)
extcon_data->gpio_active_low = pdata->gpio_active_low;
extcon_data->state_on = pdata->state_on;
extcon_data->state_off = pdata->state_off;
+ extcon_data->lost_sleep_irq = pdata->lost_sleep_irq;
if (pdata->state_on && pdata->state_off)
extcon_data->edev.print_state = extcon_gpio_print_state;
if (pdata->debounce) {
@@ -159,12 +161,30 @@ static int gpio_extcon_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int gpio_extcon_resume(struct device *dev)
+{
+ struct gpio_extcon_data *extcon_data;
+
+ extcon_data = dev_get_drvdata(dev);
+ if (extcon_data->lost_sleep_irq)
+ queue_delayed_work(system_power_efficient_wq,
+ &extcon_data->work, extcon_data->debounce_jiffies);
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops gpio_extcon_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(NULL, gpio_extcon_resume)
+};
+
static struct platform_driver gpio_extcon_driver = {
.probe = gpio_extcon_probe,
.remove = gpio_extcon_remove,
.driver = {
.name = "extcon-gpio",
.owner = THIS_MODULE,
+ .pm = &gpio_extcon_pm_ops,
},
};
diff --git a/include/linux/extcon/extcon-gpio.h b/include/linux/extcon/extcon-gpio.h
index 4195810..c7f0c3e 100644
--- a/include/linux/extcon/extcon-gpio.h
+++ b/include/linux/extcon/extcon-gpio.h
@@ -51,6 +51,7 @@ struct gpio_extcon_platform_data {
/* if NULL, "0" or "1" will be printed */
const char *state_on;
const char *state_off;
+ bool lost_sleep_irq;
};
#endif /* __EXTCON_GPIO_H__ */
--
1.7.5.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH v2] extcon: gpio: Add power resume support
2013-12-27 5:40 [PATCH v2] extcon: gpio: Add power resume support rjying
@ 2014-01-07 2:26 ` Barry Song
2014-01-07 2:52 ` Chanwoo Choi
1 sibling, 0 replies; 3+ messages in thread
From: Barry Song @ 2014-01-07 2:26 UTC (permalink / raw)
To: linux-arm-kernel
2013/12/27 rjying <rjying@gmail.com>:
> From: Rongjun Ying <rongjun.ying@csr.com>
>
> When system on the suspend state, Some SoC can't get gpio interrupt.
> After system resume, need send extcon uevent to userspace.
>
> Signed-off-by: Rongjun Ying <rongjun.ying@csr.com>
Reviewed-by: Barry Song <Baohua.Song@csr.com>
for CSR SiRFSoC, we need similar patch in extcon to make the lost
plug/unplug event during sleeping to be resent.
> ---
> -v2: Add lost_sleep_irq flags.
>
> drivers/extcon/extcon-gpio.c | 20 ++++++++++++++++++++
> include/linux/extcon/extcon-gpio.h | 1 +
> 2 files changed, 21 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c
> index 7e0dff5..fde52c1 100644
> --- a/drivers/extcon/extcon-gpio.c
> +++ b/drivers/extcon/extcon-gpio.c
> @@ -40,6 +40,7 @@ struct gpio_extcon_data {
> int irq;
> struct delayed_work work;
> unsigned long debounce_jiffies;
> + bool lost_sleep_irq;
> };
>
> static void gpio_extcon_work(struct work_struct *work)
> @@ -103,6 +104,7 @@ static int gpio_extcon_probe(struct platform_device *pdev)
> extcon_data->gpio_active_low = pdata->gpio_active_low;
> extcon_data->state_on = pdata->state_on;
> extcon_data->state_off = pdata->state_off;
> + extcon_data->lost_sleep_irq = pdata->lost_sleep_irq;
> if (pdata->state_on && pdata->state_off)
> extcon_data->edev.print_state = extcon_gpio_print_state;
> if (pdata->debounce) {
> @@ -159,12 +161,30 @@ static int gpio_extcon_remove(struct platform_device *pdev)
> return 0;
> }
>
> +#ifdef CONFIG_PM_SLEEP
> +static int gpio_extcon_resume(struct device *dev)
> +{
> + struct gpio_extcon_data *extcon_data;
> +
> + extcon_data = dev_get_drvdata(dev);
> + if (extcon_data->lost_sleep_irq)
> + queue_delayed_work(system_power_efficient_wq,
> + &extcon_data->work, extcon_data->debounce_jiffies);
> + return 0;
> +}
> +#endif
> +
> +static const struct dev_pm_ops gpio_extcon_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(NULL, gpio_extcon_resume)
> +};
> +
> static struct platform_driver gpio_extcon_driver = {
> .probe = gpio_extcon_probe,
> .remove = gpio_extcon_remove,
> .driver = {
> .name = "extcon-gpio",
> .owner = THIS_MODULE,
> + .pm = &gpio_extcon_pm_ops,
> },
> };
>
> diff --git a/include/linux/extcon/extcon-gpio.h b/include/linux/extcon/extcon-gpio.h
> index 4195810..c7f0c3e 100644
> --- a/include/linux/extcon/extcon-gpio.h
> +++ b/include/linux/extcon/extcon-gpio.h
> @@ -51,6 +51,7 @@ struct gpio_extcon_platform_data {
> /* if NULL, "0" or "1" will be printed */
> const char *state_on;
> const char *state_off;
> + bool lost_sleep_irq;
> };
>
> #endif /* __EXTCON_GPIO_H__ */
> --
> 1.7.5.4
-barry
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH v2] extcon: gpio: Add power resume support
2013-12-27 5:40 [PATCH v2] extcon: gpio: Add power resume support rjying
2014-01-07 2:26 ` Barry Song
@ 2014-01-07 2:52 ` Chanwoo Choi
1 sibling, 0 replies; 3+ messages in thread
From: Chanwoo Choi @ 2014-01-07 2:52 UTC (permalink / raw)
To: linux-arm-kernel
On 12/27/2013 02:40 PM, rjying wrote:
> From: Rongjun Ying <rongjun.ying@csr.com>
>
> When system on the suspend state, Some SoC can't get gpio interrupt.
> After system resume, need send extcon uevent to userspace.
>
> Signed-off-by: Rongjun Ying <rongjun.ying@csr.com>
> ---
> -v2: Add lost_sleep_irq flags.
>
> drivers/extcon/extcon-gpio.c | 20 ++++++++++++++++++++
> include/linux/extcon/extcon-gpio.h | 1 +
> 2 files changed, 21 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c
> index 7e0dff5..fde52c1 100644
> --- a/drivers/extcon/extcon-gpio.c
> +++ b/drivers/extcon/extcon-gpio.c
> @@ -40,6 +40,7 @@ struct gpio_extcon_data {
> int irq;
> struct delayed_work work;
> unsigned long debounce_jiffies;
> + bool lost_sleep_irq;
I prefer 'check_on_resume' instead of 'load_sleep_irq'.
> };
>
> static void gpio_extcon_work(struct work_struct *work)
> @@ -103,6 +104,7 @@ static int gpio_extcon_probe(struct platform_device *pdev)
> extcon_data->gpio_active_low = pdata->gpio_active_low;
> extcon_data->state_on = pdata->state_on;
> extcon_data->state_off = pdata->state_off;
> + extcon_data->lost_sleep_irq = pdata->lost_sleep_irq;
ditto.
> if (pdata->state_on && pdata->state_off)
> extcon_data->edev.print_state = extcon_gpio_print_state;
> if (pdata->debounce) {
> @@ -159,12 +161,30 @@ static int gpio_extcon_remove(struct platform_device *pdev)
> return 0;
> }
>
> +#ifdef CONFIG_PM_SLEEP
> +static int gpio_extcon_resume(struct device *dev)
> +{
> + struct gpio_extcon_data *extcon_data;
> +
> + extcon_data = dev_get_drvdata(dev);
> + if (extcon_data->lost_sleep_irq)
ditto.
> + queue_delayed_work(system_power_efficient_wq,
> + &extcon_data->work, extcon_data->debounce_jiffies);
> + return 0;
> +}
> +#endif
> +
> +static const struct dev_pm_ops gpio_extcon_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(NULL, gpio_extcon_resume)
> +};
> +
> static struct platform_driver gpio_extcon_driver = {
> .probe = gpio_extcon_probe,
> .remove = gpio_extcon_remove,
> .driver = {
> .name = "extcon-gpio",
> .owner = THIS_MODULE,
> + .pm = &gpio_extcon_pm_ops,
> },
> };
>
> diff --git a/include/linux/extcon/extcon-gpio.h b/include/linux/extcon/extcon-gpio.h
> index 4195810..c7f0c3e 100644
> --- a/include/linux/extcon/extcon-gpio.h
> +++ b/include/linux/extcon/extcon-gpio.h
> @@ -51,6 +51,7 @@ struct gpio_extcon_platform_data {
> /* if NULL, "0" or "1" will be printed */
> const char *state_on;
> const char *state_off;
> + bool lost_sleep_irq;
ditto.
> };
>
> #endif /* __EXTCON_GPIO_H__ */
>
Thanks,
Chanwoo Choi
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-12-27 5:40 [PATCH v2] extcon: gpio: Add power resume support rjying
2014-01-07 2:26 ` Barry Song
2014-01-07 2:52 ` Chanwoo Choi
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