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input: touchscreen: nt36xxx: Avoid i2c transfer in LA during TUI

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Synchronize Touch Interrupt and TUI Enable Session to avoid I2C Transfer.

Change-Id: I44d6819316717bf0ed4b6bff6601a7749a97b921
Signed-off-by: Ravikanth Tuniki <rtunik@codeaurora.org>
This commit is contained in:
Ravikanth Tuniki 2021-05-11 12:38:17 +05:30 • committed by Gerrit - the friendly Code Review server
commit da05beeacd
2 changed files with 36 additions and 0 deletions
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34
drivers/input/touchscreen/nt36xxx/nt36xxx.c
View file

@ -978,6 +978,8 @@ 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;
if (atomic_read(&ts->pvm_interrupt_underway))
wait_for_completion_interruptible(&ts->trusted_touch_interrupt);
atomic_set(&ts->trusted_touch_underway, 1);
#if BOOT_UPDATE_FIRMWARE
@ -988,6 +990,7 @@ static int nvt_ts_trusted_touch_pvm_vm_mode_enable(struct nvt_ts_data *ts)
if (nvt_ts_bus_get(ts) < 0) {
pr_err("nvt_ts_bus_get failed\n");
rc = -EIO;
atomic_set(&ts->trusted_touch_underway, 0);
return rc;
}
@ -1178,6 +1181,7 @@ static void nvt_ts_trusted_touch_init(struct nvt_ts_data *ts)
init_completion(&ts->trusted_touch_powerdown);
init_completion(&ts->touch_suspend_resume);
init_completion(&ts->trusted_touch_interrupt);
/* Get clocks */
ts->core_clk = devm_clk_get(ts->client->dev.parent,
@ -2043,8 +2047,26 @@ static irqreturn_t nvt_ts_work_func(int irq, void *data)
}
#endif
#ifdef CONFIG_NOVATEK_TRUSTED_TOUCH
#ifndef CONFIG_ARCH_QTI_VM
atomic_set(&ts->pvm_interrupt_underway, 1);
reinit_completion(&ts->trusted_touch_interrupt);
#endif
#endif
mutex_lock(&ts->lock);
#ifdef CONFIG_NOVATEK_TRUSTED_TOUCH
#ifndef CONFIG_ARCH_QTI_VM
if (atomic_read(&ts->trusted_touch_underway)) {
mutex_unlock(&ts->lock);
atomic_set(&ts->pvm_interrupt_underway, 0);
input_report_key(ts->input_dev, BTN_TOUCH, 0);
input_sync(ts->input_dev);
return IRQ_HANDLED;
}
#endif
#endif
ret = CTP_I2C_READ(ts->client, I2C_FW_Address, point_data, POINT_DATA_LEN + 1);
if (ret < 0) {
NVT_ERR("CTP_I2C_READ failed.(%d)\n", ret);
@ -2063,6 +2085,12 @@ static irqreturn_t nvt_ts_work_func(int irq, void *data)
input_id = (uint8_t)(point_data[1] >> 3);
nvt_ts_wakeup_gesture_report(input_id, point_data);
mutex_unlock(&ts->lock);
#ifdef CONFIG_NOVATEK_TRUSTED_TOUCH
#ifndef CONFIG_ARCH_QTI_VM
complete(&ts->trusted_touch_interrupt);
atomic_set(&ts->pvm_interrupt_underway, 0);
#endif
#endif
return IRQ_HANDLED;
}
#endif
@ -2161,6 +2189,12 @@ static irqreturn_t nvt_ts_work_func(int irq, void *data)
XFER_ERROR:
mutex_unlock(&ts->lock);
#ifdef CONFIG_NOVATEK_TRUSTED_TOUCH
#ifndef CONFIG_ARCH_QTI_VM
complete(&ts->trusted_touch_interrupt);
atomic_set(&ts->pvm_interrupt_underway, 0);
#endif
#endif
return IRQ_HANDLED;
}

2
drivers/input/touchscreen/nt36xxx/nt36xxx.h
View file

@ -199,6 +199,7 @@ struct nvt_ts_data {
const char *touch_environment;
struct completion trusted_touch_powerdown;
struct completion touch_suspend_resume;
struct completion trusted_touch_interrupt;
struct clk *core_clk;
struct clk *iface_clk;
atomic_t trusted_touch_initialized;
@ -209,6 +210,7 @@ struct nvt_ts_data {
atomic_t trusted_touch_abort_status;
atomic_t delayed_vm_probe_pending;
atomic_t trusted_touch_mode;
atomic_t pvm_interrupt_underway;
#endif
};