Hi James,
On Mon, Jan 04, 2016 at 02:57:50PM +0800, james.chen wrote:
> From: "james.chen" <james.c...@emc.com.tw>
>
> Fix function of wake-on-touch on suspend/resume.
> The function of device_may_wakeup will return true if
> the device supports wake-on-touch (for example, kitty and buddy).
> So, modify the code from "if (device_may_wakeup(dev))" to
> "if (!device_may_wakeup(dev))". And adjust the condition check of
> keep_power_in_suspend (designed for minnie).
> 2016.1.4: modify retry back to retry_cnt.
>
> Signed-off-by: james.chen <james.c...@emc.com.tw>
I already applied a version of this patch and it is in mainline.
Thanks.
> ---
> drivers/input/touchscreen/elants_i2c.c | 29 +++++++++++++++--------------
> 1 file changed, 15 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/input/touchscreen/elants_i2c.c
> b/drivers/input/touchscreen/elants_i2c.c
> index 17cc20e..3739646 100644
> --- a/drivers/input/touchscreen/elants_i2c.c
> +++ b/drivers/input/touchscreen/elants_i2c.c
> @@ -1316,24 +1316,25 @@ static int __maybe_unused elants_i2c_suspend(struct
> device *dev)
>
> disable_irq(client->irq);
>
> - if (device_may_wakeup(dev) || ts->keep_power_in_suspend) {
> + if (device_may_wakeup(dev)) {
> + /*
> + * The device will automatically enter idle mode
> + * that has reduced power consumption.
> + */
> + ts->wake_irq_enabled = (enable_irq_wake(client->irq) == 0);
> + } else if (ts->keep_power_in_suspend) {
> for (retry_cnt = 0; retry_cnt < MAX_RETRIES; retry_cnt++) {
> error = elants_i2c_send(client, set_sleep_cmd,
> - sizeof(set_sleep_cmd));
> + sizeof(set_sleep_cmd));
> if (!error)
> break;
>
> dev_err(&client->dev,
> "suspend command failed: %d\n", error);
> }
> -
> - if (device_may_wakeup(dev))
> - ts->wake_irq_enabled =
> - (enable_irq_wake(client->irq) == 0);
> } else {
> - elants_i2c_power_off(ts);
> + elants_i2c_power_off(ts);
> }
> -
> return 0;
> }
>
> @@ -1345,13 +1346,14 @@ static int __maybe_unused elants_i2c_resume(struct
> device *dev)
> int retry_cnt;
> int error;
>
> - if (device_may_wakeup(dev) && ts->wake_irq_enabled)
> - disable_irq_wake(client->irq);
> -
> - if (ts->keep_power_in_suspend) {
> + if (device_may_wakeup(dev)) {
> + if (ts->wake_irq_enabled)
> + disable_irq_wake(client->irq);
> + elants_i2c_sw_reset(client);
> + } else if (ts->keep_power_in_suspend) {
> for (retry_cnt = 0; retry_cnt < MAX_RETRIES; retry_cnt++) {
> error = elants_i2c_send(client, set_active_cmd,
> - sizeof(set_active_cmd));
> + sizeof(set_active_cmd));
> if (!error)
> break;
>
> @@ -1362,7 +1364,6 @@ static int __maybe_unused elants_i2c_resume(struct
> device *dev)
> elants_i2c_power_on(ts);
> elants_i2c_initialize(ts);
> }
> -
> ts->state = ELAN_STATE_NORMAL;
> enable_irq(client->irq);
>
> --
> 1.8.3.2
>
--
Dmitry
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