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Commit c14afef4 authored by Jin Fu's avatar Jin Fu
Browse files

input: touchpanel: fix current leakage when suspend 



Pull down reset pin when susoend to fix bottom current
leakage problem.

Change-Id: I119e9ee40e3d184af5ccb9053dd058b7df088029
Signed-off-by: default avatarJin Fu <jinf@codeaurora.org>
parent 587bb985

drivers/input/touchscreen/synaptics_dsx/synaptics_dsx_core.c

+15 −6
Original line number Diff line number Diff line
@@ -4720,6 +4720,8 @@ static int synaptics_rmi4_suspend(struct device *dev) 
	struct synaptics_rmi4_exp_fhandler *exp_fhandler;

	struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev);

	unsigned char device_ctrl;

	const struct synaptics_dsx_board_data *bdata =

			rmi4_data->hw_if->board_data;



	if (rmi4_data->stay_awake)

		return 0;
@@ -4762,9 +4764,10 @@ static int synaptics_rmi4_suspend(struct device *dev) 
		synaptics_rmi4_free_fingers(rmi4_data);

	}



	if (rmi4_data->ts_pinctrl)

		pinctrl_select_state(rmi4_data->ts_pinctrl,

					rmi4_data->pinctrl_state_suspend);

	if (bdata->reset_gpio >= 0) {

		gpio_set_value(bdata->reset_gpio, bdata->reset_on_state);

		msleep(bdata->reset_active_ms);

	}



	synaptics_rmi4_enable_reg(rmi4_data, false);
@@ -4790,6 +4793,8 @@ static int synaptics_rmi4_resume(struct device *dev) 
	struct synaptics_rmi4_exp_fhandler *exp_fhandler;

	struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev);



	const struct synaptics_dsx_board_data *bdata =

			rmi4_data->hw_if->board_data;

	if (rmi4_data->stay_awake)

		return 0;
@@ -4801,9 +4806,13 @@ static int synaptics_rmi4_resume(struct device *dev) 


	synaptics_rmi4_enable_reg(rmi4_data, true);



	if (rmi4_data->ts_pinctrl)

		pinctrl_select_state(rmi4_data->ts_pinctrl,

			rmi4_data->pinctrl_state_active);

	if (bdata->reset_gpio >= 0) {

		gpio_set_value(bdata->reset_gpio, bdata->reset_on_state);

		msleep(bdata->reset_active_ms);

		gpio_set_value(bdata->reset_gpio, !bdata->reset_on_state);

		msleep(bdata->reset_delay_ms);

	}





	rmi4_data->current_page = MASK_8BIT;