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Commit 51c5d714 authored by Subbaraman Narayanamurthy's avatar Subbaraman Narayanamurthy Committed by David Collins
Browse files

pinctrl: qcom: spmi-gpio: add support to enable/disable output 



Currently, if the GPIO is configured as output in the bootloader
and user changes the mode to input in HLOS, it would end up
getting configured as input/output. Functionally, this is fine;
however, there may be some requirements where the output needs
to be disabled so that it can be used only for input.

Add support to enable/disable output mode through "output-enable"
or "output-disable" pinctrl properties.

Change-Id: Ie857f94d529a6209bcb82ef3775d414f19d5678a
Signed-off-by: default avatarSubbaraman Narayanamurthy <subbaram@codeaurora.org>
parent acd8d0b9

drivers/pinctrl/qcom/pinctrl-spmi-gpio.c

+8 −10
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 * Copyright (c) 2012-2014, 2016-2017 The Linux Foundation. All rights reserved.

 */



#include <linux/gpio.h>
@@ -437,6 +429,9 @@ static int pmic_gpio_config_get(struct pinctrl_dev *pctldev, 
			return -EINVAL;

		arg = 1;

		break;

	case PIN_CONFIG_OUTPUT_ENABLE:

		arg = pad->output_enabled;

		break;

	case PIN_CONFIG_OUTPUT:

		arg = pad->out_value;

		break;
@@ -516,6 +511,9 @@ static int pmic_gpio_config_set(struct pinctrl_dev *pctldev, unsigned int pin, 
		case PIN_CONFIG_INPUT_ENABLE:

			pad->input_enabled = arg ? true : false;

			break;

		case PIN_CONFIG_OUTPUT_ENABLE:

			pad->output_enabled = arg ? true : false;

			break;

		case PIN_CONFIG_OUTPUT:

			pad->output_enabled = true;

			pad->out_value = arg;