linux/drivers/gpu/drm/amd/display/dc/gpio/hw_gpio.c

/*
 * Copyright 2012-15 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: AMD
 *
 */

#include "dm_services.h"
#include "include/gpio_types.h"
#include "hw_gpio.h"

#include "reg_helper.h"
#include "gpio_regs.h"

#undef FN
#define FN(reg_name, field_name) …

#define CTX …
#define REG(reg) …

static void store_registers(
	struct hw_gpio *gpio)
{ … }

static void restore_registers(
	struct hw_gpio *gpio)
{ … }

bool dal_hw_gpio_open(
	struct hw_gpio_pin *ptr,
	enum gpio_mode mode)
{ … }

enum gpio_result dal_hw_gpio_get_value(
	const struct hw_gpio_pin *ptr,
	uint32_t *value)
{ … }

enum gpio_result dal_hw_gpio_set_value(
	const struct hw_gpio_pin *ptr,
	uint32_t value)
{ … }

enum gpio_result dal_hw_gpio_change_mode(
	struct hw_gpio_pin *ptr,
	enum gpio_mode mode)
{ … }

void dal_hw_gpio_close(
	struct hw_gpio_pin *ptr)
{ … }

enum gpio_result dal_hw_gpio_config_mode(
	struct hw_gpio *gpio,
	enum gpio_mode mode)
{ … }

void dal_hw_gpio_construct(
	struct hw_gpio *pin,
	enum gpio_id id,
	uint32_t en,
	struct dc_context *ctx)
{ … }

void dal_hw_gpio_destruct(
	struct hw_gpio *pin)
{ … }