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Commit e44ea453 authored by Ritesh Kumar's avatar Ritesh Kumar Committed by Gerrit - the friendly Code Review server
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input: touchscreen: nt36xxx: Use disable/enable irq wake in LA to LE 



Touch uses gpio as irq in LA. As per latest change from pinctrl,
wakeup bit is disabled/enabled when disable_irq/enable_irq is called.
During transtion from LA to LE, disable_irq is called leading to
wakeup bit getting disabled and in LE Touch interrupts does not come.
So, use disable_irq_wake to disable Touch interrupts while transition
from LA to LE and use enable_irq_wake to enable back Touch interrupts
while transition from LE to LA.

Change-Id: Iad3391af40535d51daeef881c3d62b3ec893fff2
Signed-off-by: default avatarRitesh Kumar <riteshk@codeaurora.org>
parent 6753ae03

drivers/input/touchscreen/nt36xxx/nt36xxx.c

+14 −0
Original line number Diff line number Diff line
@@ -725,6 +725,7 @@ static void nvt_ts_trusted_touch_abort_pvm(struct nvt_ts_data *ts) 
	case TRUSTED_TOUCH_PVM_INIT:

	case PVM_I2C_RESOURCE_RELEASED:

		atomic_set(&ts->trusted_touch_enabled, 0);

		atomic_set(&ts->trusted_touch_underway, 0);

	}



	atomic_set(&ts->trusted_touch_abort_status, 0);
@@ -835,6 +836,7 @@ static void nvt_trusted_touch_pvm_vm_mode_disable(struct nvt_ts_data *ts) 
	nvt_ts_trusted_touch_set_pvm_driver_state(ts,

						TRUSTED_TOUCH_PVM_INIT);

	atomic_set(&ts->trusted_touch_enabled, 0);

	atomic_set(&ts->trusted_touch_underway, 0);

	pr_info("trusted touch disabled\n");

	return;

error:
@@ -973,6 +975,7 @@ static int nvt_ts_trusted_touch_pvm_vm_mode_enable(struct nvt_ts_data *ts) 
	int rc = 0;

	struct trusted_touch_vm_info *vm_info = ts->vm_info;



	atomic_set(&ts->trusted_touch_underway, 1);

	/* i2c session start and resource acquire */

	if (nvt_ts_bus_get(ts) < 0) {

		pr_err("nvt_ts_bus_get failed\n");
@@ -1208,12 +1211,23 @@ static void nvt_irq_enable(bool enable) 


	if (enable) {

		if (!ts->irq_enabled) {

#ifdef CONFIG_NOVATEK_TRUSTED_TOUCH

			/* trusted_touch_underway is set in LA only */

			if (atomic_read(&ts->trusted_touch_underway))

				enable_irq_wake(ts->client->irq);

#else

			enable_irq(ts->client->irq);

#endif

			ts->irq_enabled = true;

		}

	} else {

		if (ts->irq_enabled) {

#ifdef CONFIG_NOVATEK_TRUSTED_TOUCH

			if (atomic_read(&ts->trusted_touch_underway))

				disable_irq_wake(ts->client->irq);

#else

			disable_irq(ts->client->irq);

#endif

			ts->irq_enabled = false;

		}

	}

drivers/input/touchscreen/nt36xxx/nt36xxx.h

+1 −0
Original line number Diff line number Diff line
@@ -202,6 +202,7 @@ struct nvt_ts_data { 
	struct clk *iface_clk;

	atomic_t trusted_touch_initialized;

	atomic_t trusted_touch_enabled;

	atomic_t trusted_touch_underway;

	atomic_t trusted_touch_event;

	atomic_t trusted_touch_abort_status;

	atomic_t delayed_vm_probe_pending;