Merge "input: touchscreen: reduce lpm current of avdd reg for ITE tech" (1eeff40f) · Commits · e / devices / android_kernel_xiaomi_markw

Documentation/devicetree/bindings/input/touchscreen/it7258_ts_i2c.txt

+2 −0

Original line number	Diff line number	Diff line
		@@ -45,6 +45,7 @@ Optional properties:
		- ite,low-reset : boolean, if the controller needs low-state of the reset gpio while
		initializing, and reset gpio should be made as high-state to reset the
		controller. It means the controller needs "active-high" reset gpio.
		- ite,avdd-lpm-cur : avdd lpm current value(mA) in suspend state.

		Required properties palm-detect-en feature:
		- ite,palm-detect-keycode : The keycode that is required to be sent when
		@@ -76,5 +77,6 @@ Example:
		ite,num-fingers = <2>;
		ite,reset-delay = <20>;
		ite,low-reset;
		ite,vdd-lpm-cur = <3000>;
		};
		};

drivers/input/touchscreen/it7258_ts_i2c.c

+27 −0

Original line number	Diff line number	Diff line
		@@ -168,6 +168,7 @@ struct IT7260_ts_platform_data {
		unsigned int disp_maxy;
		unsigned num_of_fingers;
		unsigned int reset_delay;
		unsigned int avdd_lpm_cur;
		bool low_reset;
		};

		@@ -1493,6 +1494,14 @@ static int IT7260_parse_dt(struct device *dev,
		return rc;
		}

		rc = of_property_read_u32(np, "ite,avdd-lpm-cur", &temp_val);
		if (!rc) {
		pdata->avdd_lpm_cur = temp_val;
		} else if (rc && (rc != -EINVAL)) {
		dev_err(dev, "Unable to read avdd lpm current value %d\n", rc);
		return rc;
		}

		pdata->low_reset = of_property_read_bool(np, "ite,low-reset");

		rc = IT7260_get_dt_coords(dev, "ite,display-coords", pdata);
		@@ -1872,6 +1881,15 @@ static int IT7260_ts_resume(struct device *dev)

		if (device_may_wakeup(dev)) {
		if (gl_ts->device_needs_wakeup) {
		/* Set active current for the avdd regulator */
		if (gl_ts->pdata->avdd_lpm_cur) {
		retval = reg_set_optimum_mode_check(gl_ts->avdd,
		IT_I2C_ACTIVE_LOAD_UA);
		if (retval < 0)
		dev_err(dev, "Regulator avdd set_opt failed at resume rc=%d\n",
		retval);
		}

		gl_ts->device_needs_wakeup = false;
		disable_irq_wake(gl_ts->client->irq);
		}
		@@ -1910,6 +1928,15 @@ static int IT7260_ts_suspend(struct device *dev)
		/* put the device in low power idle mode */
		IT7260_ts_chipLowPowerMode(PWR_CTL_LOW_POWER_MODE);

		/* Set lpm current for avdd regulator */
		if (gl_ts->pdata->avdd_lpm_cur) {
		retval = reg_set_optimum_mode_check(gl_ts->avdd,
		gl_ts->pdata->avdd_lpm_cur);
		if (retval < 0)
		dev_err(dev, "Regulator avdd set_opt failed at suspend rc=%d\n",
		retval);
		}

		gl_ts->device_needs_wakeup = true;
		enable_irq_wake(gl_ts->client->irq);
		}