| Message ID | 1437367814-27785-2-git-send-email-vigneshr@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
* Vignesh R <vigneshr@ti.com> [150719 21:53]: > @@ -445,6 +443,8 @@ static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev) > dev_dbg(dev, "%s: x %d, y %d, gpio %d\n", __func__, > pdata->x_max + 1, pdata->y_max + 1, pdata->gpio_attb); > > + pdata->wakeirq = of_irq_get_byname(dev->of_node, "wakeupirq"); > + > return pdata; What about handling -EPROVE_DEFER here? At least pinctrl-single can be be a loadable module for the dedicated wakeirqs. Regarads, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Sun, Jul 19, 2015 at 11:09:30PM -0700, Tony Lindgren wrote: > * Vignesh R <vigneshr@ti.com> [150719 21:53]: > > @@ -445,6 +443,8 @@ static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev) > > dev_dbg(dev, "%s: x %d, y %d, gpio %d\n", __func__, > > pdata->x_max + 1, pdata->y_max + 1, pdata->gpio_attb); > > > > + pdata->wakeirq = of_irq_get_byname(dev->of_node, "wakeupirq"); > > + > > return pdata; > > What about handling -EPROVE_DEFER here? At least pinctrl-single can be > be a loadable module for the dedicated wakeirqs. Right. I think we should only allow -ENODATA to continue and return error in all other cases. Also, I think "irq" suffix on name is redundant. Thanks.
On Mon, Jul 20, 2015 at 10:20:13AM +0530, Vignesh R wrote: > On am437x-gp-evm, pixcir touchscreen can wake the system from low power > state by generating wake-up interrupt via pinctrl and IO daisy chain. > Add support for optional wakeup interrupt source by regsitering to > automated wake IRQ framework introduced by commit 4990d4fe327b ("PM / > Wakeirq: Add automated device wake IRQ handling"). > This is similar in approach to commit 2a0b965cfb6e ("serial: omap: Add > support for optional wake-up") > > Signed-off-by: Vignesh R <vigneshr@ti.com> > --- > v2: > * use of_irq_get_byname() > * remove enable/disable_wake_irq() > > drivers/input/touchscreen/pixcir_i2c_ts.c | 17 +++++++++++++---- > include/linux/input/pixcir_ts.h | 1 + > 2 files changed, 14 insertions(+), 4 deletions(-) > > diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c > index 8f3e243a62bf..b9cebf274678 100644 > --- a/drivers/input/touchscreen/pixcir_i2c_ts.c > +++ b/drivers/input/touchscreen/pixcir_i2c_ts.c > @@ -29,6 +29,8 @@ > #include <linux/of.h> > #include <linux/of_gpio.h> > #include <linux/of_device.h> > +#include <linux/of_irq.h> > +#include <linux/pm_wakeirq.h> > > #define PIXCIR_MAX_SLOTS 5 /* Max fingers supported by driver */ > > @@ -364,8 +366,6 @@ static int __maybe_unused pixcir_i2c_ts_suspend(struct device *dev) > goto unlock; > } > } > - > - enable_irq_wake(client->irq); > } else if (input->users) { > ret = pixcir_stop(ts); > } > @@ -386,8 +386,6 @@ static int __maybe_unused pixcir_i2c_ts_resume(struct device *dev) > mutex_lock(&input->mutex); > > if (device_may_wakeup(&client->dev)) { > - disable_irq_wake(client->irq); > - > if (!input->users) { > ret = pixcir_stop(ts); > if (ret) { > @@ -445,6 +443,8 @@ static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev) > dev_dbg(dev, "%s: x %d, y %d, gpio %d\n", __func__, > pdata->x_max + 1, pdata->y_max + 1, pdata->gpio_attb); > > + pdata->wakeirq = of_irq_get_byname(dev->of_node, "wakeupirq"); > + > return pdata; > } > #else > @@ -564,11 +564,20 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client, > i2c_set_clientdata(client, tsdata); > device_init_wakeup(&client->dev, 1); > > + /* Register wakeirq */ > + error = pdata->wakeirq ? Hmm, I guess the condition should be pdata->wakeirq > 0. > + dev_pm_set_dedicated_wake_irq(dev, pdata->wakeirq) : > + dev_pm_set_wake_irq(dev, client->irq); > + if (error) > + dev_info(dev, "unable to get wakeirq %d\n", > + error); > + > return 0; > } > > static int pixcir_i2c_ts_remove(struct i2c_client *client) > { > + dev_pm_clear_wake_irq(&client->dev); > device_init_wakeup(&client->dev, 0); > > return 0; > diff --git a/include/linux/input/pixcir_ts.h b/include/linux/input/pixcir_ts.h > index 7bae83b7c396..da573de5a5ee 100644 > --- a/include/linux/input/pixcir_ts.h > +++ b/include/linux/input/pixcir_ts.h > @@ -58,6 +58,7 @@ struct pixcir_ts_platform_data { > int x_max; > int y_max; > int gpio_attb; /* GPIO connected to ATTB line */ > + int wakeirq; > struct pixcir_i2c_chip_data chip; > }; > > -- > 2.4.5 >
Hi Dmitry, On 07/20/2015 11:54 AM, Dmitry Torokhov wrote: > On Sun, Jul 19, 2015 at 11:09:30PM -0700, Tony Lindgren wrote: >> * Vignesh R <vigneshr@ti.com> [150719 21:53]: >>> @@ -445,6 +443,8 @@ static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev) >>> dev_dbg(dev, "%s: x %d, y %d, gpio %d\n", __func__, >>> pdata->x_max + 1, pdata->y_max + 1, pdata->gpio_attb); >>> >>> + pdata->wakeirq = of_irq_get_byname(dev->of_node, "wakeupirq"); >>> + >>> return pdata; >> >> What about handling -EPROVE_DEFER here? At least pinctrl-single can be >> be a loadable module for the dedicated wakeirqs. > > Right. I think we should only allow -ENODATA to continue and return > error in all other cases. -EINVAL will be returned if "interrupt-names" is not specified. I will make execption for -ENODATA & -EINVAL, and return error in all other cases? > > Also, I think "irq" suffix on name is redundant. Ok, will drop "irq" suffix: + interrupt-names = "tsc", "wakeup"; > > Thanks. >
diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c index 8f3e243a62bf..b9cebf274678 100644 --- a/drivers/input/touchscreen/pixcir_i2c_ts.c +++ b/drivers/input/touchscreen/pixcir_i2c_ts.c @@ -29,6 +29,8 @@ #include <linux/of.h> #include <linux/of_gpio.h> #include <linux/of_device.h> +#include <linux/of_irq.h> +#include <linux/pm_wakeirq.h> #define PIXCIR_MAX_SLOTS 5 /* Max fingers supported by driver */ @@ -364,8 +366,6 @@ static int __maybe_unused pixcir_i2c_ts_suspend(struct device *dev) goto unlock; } } - - enable_irq_wake(client->irq); } else if (input->users) { ret = pixcir_stop(ts); } @@ -386,8 +386,6 @@ static int __maybe_unused pixcir_i2c_ts_resume(struct device *dev) mutex_lock(&input->mutex); if (device_may_wakeup(&client->dev)) { - disable_irq_wake(client->irq); - if (!input->users) { ret = pixcir_stop(ts); if (ret) { @@ -445,6 +443,8 @@ static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev) dev_dbg(dev, "%s: x %d, y %d, gpio %d\n", __func__, pdata->x_max + 1, pdata->y_max + 1, pdata->gpio_attb); + pdata->wakeirq = of_irq_get_byname(dev->of_node, "wakeupirq"); + return pdata; } #else @@ -564,11 +564,20 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client, i2c_set_clientdata(client, tsdata); device_init_wakeup(&client->dev, 1); + /* Register wakeirq */ + error = pdata->wakeirq ? + dev_pm_set_dedicated_wake_irq(dev, pdata->wakeirq) : + dev_pm_set_wake_irq(dev, client->irq); + if (error) + dev_info(dev, "unable to get wakeirq %d\n", + error); + return 0; } static int pixcir_i2c_ts_remove(struct i2c_client *client) { + dev_pm_clear_wake_irq(&client->dev); device_init_wakeup(&client->dev, 0); return 0; diff --git a/include/linux/input/pixcir_ts.h b/include/linux/input/pixcir_ts.h index 7bae83b7c396..da573de5a5ee 100644 --- a/include/linux/input/pixcir_ts.h +++ b/include/linux/input/pixcir_ts.h @@ -58,6 +58,7 @@ struct pixcir_ts_platform_data { int x_max; int y_max; int gpio_attb; /* GPIO connected to ATTB line */ + int wakeirq; struct pixcir_i2c_chip_data chip; };
On am437x-gp-evm, pixcir touchscreen can wake the system from low power state by generating wake-up interrupt via pinctrl and IO daisy chain. Add support for optional wakeup interrupt source by regsitering to automated wake IRQ framework introduced by commit 4990d4fe327b ("PM / Wakeirq: Add automated device wake IRQ handling"). This is similar in approach to commit 2a0b965cfb6e ("serial: omap: Add support for optional wake-up") Signed-off-by: Vignesh R <vigneshr@ti.com> --- v2: * use of_irq_get_byname() * remove enable/disable_wake_irq() drivers/input/touchscreen/pixcir_i2c_ts.c | 17 +++++++++++++---- include/linux/input/pixcir_ts.h | 1 + 2 files changed, 14 insertions(+), 4 deletions(-)