| Message ID | 1533050291-11502-3-git-send-email-pawel.mikolaj.chmiel@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Input: atmel_mxt_ts: Add support for optional regulators | expand |
Hello Paweł, On Tue, Jul 31, 2018 at 05:18:10PM +0200, Paweł Chmiel wrote: > According to documentation, device isn't ready for communication, > until firmware asserts the CHG line. Add missing wait for this. > > Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com> > --- > drivers/input/touchscreen/atmel_mxt_ts.c | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c > index 2cd7f6db6ba9..79e08916359f 100644 > --- a/drivers/input/touchscreen/atmel_mxt_ts.c > +++ b/drivers/input/touchscreen/atmel_mxt_ts.c > @@ -202,6 +202,7 @@ enum t100_type { > #define MXT_CRC_TIMEOUT 1000 /* msec */ > #define MXT_FW_RESET_TIME 3000 /* msec */ > #define MXT_FW_CHG_TIMEOUT 300 /* msec */ > +#define MXT_POWERON_DELAY 150 /* msec */ > > /* Command to unlock bootloader */ > #define MXT_UNLOCK_CMD_MSB 0xaa > @@ -3046,6 +3047,16 @@ static int mxt_regulator_enable(struct mxt_data *data) > msleep(MXT_REGULATOR_DELAY); > gpiod_set_value(data->reset_gpio, 1); > msleep(MXT_RESET_INVALID_CHG); > + > +retry_wait: > + reinit_completion(&data->bl_completion); > + data->in_bootloader = true; > + error = mxt_wait_for_completion(data, &data->bl_completion, > + MXT_POWERON_DELAY); Please fix the following checkpatch issues: drivers/input/touchscreen/atmel_mxt_ts.c:3078: WARNING:LONG_LINE: line over 80 characters drivers/input/touchscreen/atmel_mxt_ts.c:3078: CHECK:PARENTHESIS_ALIGNMENT: Alignment should match open parenthesis Thanks! -- Regards, George > + if (error == -EINTR) > + goto retry_wait; > + > + data->in_bootloader = false; > } > > return 0; > -- > 2.7.4 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 2cd7f6db6ba9..79e08916359f 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -202,6 +202,7 @@ enum t100_type { #define MXT_CRC_TIMEOUT 1000 /* msec */ #define MXT_FW_RESET_TIME 3000 /* msec */ #define MXT_FW_CHG_TIMEOUT 300 /* msec */ +#define MXT_POWERON_DELAY 150 /* msec */ /* Command to unlock bootloader */ #define MXT_UNLOCK_CMD_MSB 0xaa @@ -3046,6 +3047,16 @@ static int mxt_regulator_enable(struct mxt_data *data) msleep(MXT_REGULATOR_DELAY); gpiod_set_value(data->reset_gpio, 1); msleep(MXT_RESET_INVALID_CHG); + +retry_wait: + reinit_completion(&data->bl_completion); + data->in_bootloader = true; + error = mxt_wait_for_completion(data, &data->bl_completion, + MXT_POWERON_DELAY); + if (error == -EINTR) + goto retry_wait; + + data->in_bootloader = false; } return 0;
According to documentation, device isn't ready for communication, until firmware asserts the CHG line. Add missing wait for this. Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com> --- drivers/input/touchscreen/atmel_mxt_ts.c | 11 +++++++++++ 1 file changed, 11 insertions(+)