drivers/gpu/drm/amd/display/dc/inc/hw/display_clock.h

/*
 * Copyright 2012-16 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 __DISPLAY_CLOCK_H__
#define __DISPLAY_CLOCK_H__

#include "dm_services_types.h"
#include "dc.h"

/* Structure containing all state-dependent clocks
 * (dependent on "enum clocks_state") */
struct state_dependent_clocks {
	int display_clk_khz;
	int pixel_clk_khz;
};

struct dccg {
	struct dc_context *ctx;
	const struct display_clock_funcs *funcs;

	enum dm_pp_clocks_state max_clks_state;
	enum dm_pp_clocks_state cur_min_clks_state;
	struct dc_clocks clks;
};

struct display_clock_funcs {
	void (*update_clocks)(struct dccg *dccg,
			struct dc_clocks *new_clocks,
			bool safe_to_lower);
	int (*set_dispclk)(struct dccg *dccg,
		int requested_clock_khz);

	int (*get_dp_ref_clk_frequency)(struct dccg *dccg);
};

#endif /* __DISPLAY_CLOCK_H__ */