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himax_v2_mmi: Add wakelock before SPI operation

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If palm detect function is enabled, interrupt will not disable,
IC works in normal mode.
But in case touch event is reported to input subsystem, skip touch event
when suspend flag is true. So input subsystem will not take wakelock
because no one report event.
In this case, we still need read data from IC, so AP can not enter
suspend. Add a 10ms wakelock when this function is enabled.
(TP report rate is around 100Hz).

Change-Id: I867a90844edc2d9372bf6b15f776f6b1a66ef51a
Signed-off-by: haojl2 <haojl2@motorola.com>
Reviewed-on: https://gerrit.mot.com/1409612
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Zhenxin Xi <xizx@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
haojl2 2019-08-25 01:47:18 +08:00 • committed by Jialei Hao
commit b38f0056ad
2 changed files with 34 additions and 0 deletions
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29
drivers/input/touchscreen/himax_v2_mmi/himax_common.c
View file

@ -2902,6 +2902,11 @@ static int himax_palm_detect_sensor_init(struct himax_ts_data *data)
#else
wakeup_source_init(&data->palm_gesture_wakelock, "palm_detect_wl");
#endif
#ifdef CONFIG_HAS_WAKELOCK
wake_lock_init(&data->palm_gesture_read_wakelock, WAKE_LOCK_SUSPEND, "palm_read_wl");
#else
wakeup_source_init(&data->palm_gesture_read_wakelock, "palm_read_wl");
#endif
data->palm_release_fimer.function = himax_palm_sensor_release_timer_handler;
init_timer(&data->palm_release_fimer);
@ -2930,6 +2935,11 @@ int himax_palm_detect_sensor_remove(struct himax_ts_data *data)
wake_lock_destroy(&data->palm_gesture_wakelock);
#else
wakeup_source_trash(&data->palm_gesture_wakelock);
#endif
#ifdef CONFIG_HAS_WAKELOCK
wake_lock_destroy(&data->palm_gesture_read_wakelock);
#else
wakeup_source_trash(&data->palm_gesture_read_wakelock);
#endif
data->palm_sensor_pdata = NULL;
data->palm_detection_enabled = false;
@ -2943,6 +2953,25 @@ void himax_ts_work(struct himax_ts_data *ts)
int ts_status = HX_TS_NORMAL_END;
int ts_path = 0;
/*
* If palm detect function is enabled, interrupt will not disable, IC works in
* normal mode. But in case touch event is reported to input subsystem, skip
* touch event when suspend flag is true. So input subsystem will not take
* wakelock because no one report event.
* In this case, we still need read data from IC, so AP can not enter suspend.
* Add a 10ms wakelock when this function is enabled. (TP report rate is around
* 100Hz).
*/
#ifdef HIMAX_PALM_SENSOR_EN
if (ts->palm_detection_enabled) {
#ifdef CONFIG_HAS_WAKELOCK
wake_lock_timeout(&ts->palm_gesture_read_wakelock, 10);
#else
__pm_wakeup_event(&ts->palm_gesture_read_wakelock, 10);
#endif
}
#endif
if (debug_data != NULL)
debug_data->fp_ts_dbg_func(ts, HX_FINGER_ON);

5
drivers/input/touchscreen/himax_v2_mmi/himax_common.h
View file

@ -478,6 +478,11 @@ struct himax_ts_data {
#else
struct wakeup_source palm_gesture_wakelock;
#endif
#ifdef CONFIG_HAS_WAKELOCK
struct wake_lock palm_gesture_read_wakelock;
#else
struct wakeup_source palm_gesture_read_wakelock;
#endif
#endif
};