linux_kernel/drivers/gpu/drm/amd/display/dc/inc/hw/abm.h

/* 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
 *
 */

#ifndef __DC_ABM_H__
#define __DC_ABM_H__

#include "dm_services_types.h"

struct abm_backlight_registers {
	unsigned int BL_PWM_CNTL;
	unsigned int BL_PWM_CNTL2;
	unsigned int BL_PWM_PERIOD_CNTL;
	unsigned int LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV;
};

struct abm {
	struct dc_context *ctx;
	const struct abm_funcs *funcs;

	/* registers setting needs to be saved and restored at InitBacklight */
	struct abm_backlight_registers stored_backlight_registers;
};

struct abm_funcs {
	void (*abm_init)(struct abm *abm);
	bool (*set_abm_level)(struct abm *abm, unsigned int abm_level);
	bool (*set_abm_immediate_disable)(struct abm *abm);
	bool (*init_backlight)(struct abm *abm);
	bool (*set_backlight_level)(struct abm *abm,
			unsigned int backlight_level,
			unsigned int frame_ramp,
			unsigned int controller_id);
	unsigned int (*get_current_backlight_8_bit)(struct abm *abm);
	bool (*is_dmcu_initialized)(struct abm *abm);
};

#endif