From: Nick Dyer <[email protected]>
This patch reports failures in suspend/resume
Signed-off-by: Nick Dyer <[email protected]>
(cherry picked from ndyer/linux/for-upstream commit 93a57575403d)
[gdavis: Resolve forward port conflicts due to applying upstream
commit 96a938aa214e ("Input: atmel_mxt_ts - remove platform
data support").]
Signed-off-by: George G. Davis <[email protected]>
[jiada: Fix compilation warning
Add commit description]
Signed-off-by: Jiada Wang <[email protected]>
---
drivers/input/touchscreen/atmel_mxt_ts.c | 51 ++++++++++++++++++------
1 file changed, 39 insertions(+), 12 deletions(-)
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index ef8baf64659e..f8783e37436f 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -3425,10 +3425,12 @@ static void mxt_reset_slots(struct mxt_data *data)
mxt_input_sync(data);
}
-static void mxt_start(struct mxt_data *data)
+static int mxt_start(struct mxt_data *data)
{
+ int ret = 0;
+
if (!data->suspended || data->in_bootloader)
- return;
+ return 0;
switch (data->suspend_mode) {
case MXT_SUSPEND_T9_CTRL:
@@ -3453,28 +3455,42 @@ static void mxt_start(struct mxt_data *data)
*/
mxt_process_messages_until_invalid(data);
- mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN);
+ ret = mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN);
+ if (ret)
+ return ret;
/* Recalibrate since chip has been in deep sleep */
- mxt_t6_command(data, MXT_COMMAND_CALIBRATE, 1, false);
+ ret = mxt_t6_command(data, MXT_COMMAND_CALIBRATE, 1, false);
+ if (ret)
+ return ret;
+
+ ret = mxt_acquire_irq(data);
+ if (ret)
+ return ret;
- mxt_acquire_irq(data);
break;
}
data->suspended = false;
+
+ return 0;
}
-static void mxt_stop(struct mxt_data *data)
+static int mxt_stop(struct mxt_data *data)
{
+ int ret;
+
if (data->suspended || data->in_bootloader)
- return;
+ return 0;
switch (data->suspend_mode) {
case MXT_SUSPEND_T9_CTRL:
/* Touch disable */
- mxt_write_object(data,
+ ret = mxt_write_object(data,
MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0);
+ if (ret)
+ return ret;
+
break;
case MXT_SUSPEND_REGULATOR:
@@ -3487,29 +3503,40 @@ static void mxt_stop(struct mxt_data *data)
default:
disable_irq(data->irq);
- mxt_set_t7_power_cfg(data, MXT_POWER_CFG_DEEPSLEEP);
+ ret = mxt_set_t7_power_cfg(data, MXT_POWER_CFG_DEEPSLEEP);
+ if (ret)
+ return ret;
mxt_reset_slots(data);
break;
}
data->suspended = true;
+ return 0;
}
static int mxt_input_open(struct input_dev *dev)
{
struct mxt_data *data = input_get_drvdata(dev);
+ int ret;
- mxt_start(data);
+ ret = mxt_start(data);
- return 0;
+ if (ret)
+ dev_err(&data->client->dev, "%s failed rc=%d\n", __func__, ret);
+
+ return ret;
}
static void mxt_input_close(struct input_dev *dev)
{
struct mxt_data *data = input_get_drvdata(dev);
+ int ret;
- mxt_stop(data);
+ ret = mxt_stop(data);
+
+ if (ret)
+ dev_err(&data->client->dev, "%s failed rc=%d\n", __func__, ret);
}
static int mxt_parse_device_properties(struct mxt_data *data)
--
2.17.1