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himax_v2_mmi: Make sure SPI bus not suspend when TP acvice

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TP:
When Palm sensor is enabled, make sure device is in active state.
Because in this situation, TP interrupt is active, and data need read
from SPI bus.

Change-Id: I611df4787632bf8f80ec01ddb1c45dc05baa4648
Signed-off-by: haojl2 <haojl2@motorola.com>
Reviewed-on: https://gerrit.mot.com/1411955
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Guobin Zhang <zhanggb@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
haojl2 2019-08-28 17:38:24 +08:00 • committed by Jialei Hao
commit e3eebc917d
1 changed files with 17 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

36
drivers/input/touchscreen/himax_v2_mmi/himax_common.c
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@ -2838,7 +2838,19 @@ static void himax_palm_sensor_release_timer_handler(unsigned long data)
static int _himax_palm_detect_sensor_set_enable(unsigned int enable)
{
I("Gesture set enable %d!", enable);
/*
* 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.
*/
if (enable == 1) {
#ifdef CONFIG_HAS_WAKELOCK
wake_lock(&private_ts->palm_gesture_read_wakelock);
#else
__pm_stay_awake(&private_ts->palm_gesture_read_wakelock);
#endif
g_core_fp.fp_palm_detection_function(1);
private_ts->palm_detection_enabled = true;
} else if (enable == 0) {
@ -2848,6 +2860,11 @@ static int _himax_palm_detect_sensor_set_enable(unsigned int enable)
}
g_core_fp.fp_palm_detection_function(0);
private_ts->palm_detection_enabled = false;
#ifdef CONFIG_HAS_WAKELOCK
wake_unlock(&private_ts->palm_gesture_read_wakelock);
#else
__pm_relax(&private_ts->palm_gesture_read_wakelock);
#endif
} else
E("unknown enable symbol\n");
@ -2975,25 +2992,6 @@ 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);