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Commit c894e4be authored by Sarada Prasanna Garnayak's avatar Sarada Prasanna Garnayak
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input: synaptics_i2c_rmi4: Turn off the reset gpio before freeing it. 



Set the direction of reset GPIO to input before freeing it. This
eliminates any leakage current which may be there.

CRs-Fixed: 553847
Change-Id: Ib439de058326bf0d14d6e18b0a6198b4f682daf8
Signed-off-by: default avatarSarada Prasanna Garnayak <c_sgarna@codeaurora.org>
parent 76784e6b

drivers/input/touchscreen/synaptics_i2c_rmi4.c

+15 −1
Original line number Diff line number Diff line
@@ -2662,9 +2662,23 @@ static int synaptics_rmi4_gpio_configure(struct synaptics_rmi4_data *rmi4_data, 
		if (rmi4_data->board->disable_gpios) {

			if (gpio_is_valid(rmi4_data->board->irq_gpio))

				gpio_free(rmi4_data->board->irq_gpio);

			if (gpio_is_valid(rmi4_data->board->reset_gpio))

			if (gpio_is_valid(rmi4_data->board->reset_gpio)) {

				/*

				 * This is intended to save leakage current

				 * only. Even if the call(gpio_direction_input)

				 * fails, only leakage current will be more but

				 * functionality will not be affected.

				 */

				retval = gpio_direction_input(rmi4_data->

							board->reset_gpio);

				if (retval) {

					dev_err(&rmi4_data->i2c_client->dev,

					"unable to set direction for gpio "

					"[%d]\n", rmi4_data->board->irq_gpio);

				}

				gpio_free(rmi4_data->board->reset_gpio);

			}

		}



		return 0;

	}