1 /* 2 * Copyright 2012-16 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: AMD 23 * 24 */ 25 26 #ifndef __DISPLAY_CLOCK_H__ 27 #define __DISPLAY_CLOCK_H__ 28 29 #include "dm_services_types.h" 30 #include "dc.h" 31 32 /* Structure containing all state-dependent clocks 33 * (dependent on "enum clocks_state") */ 34 struct state_dependent_clocks { 35 int display_clk_khz; 36 int pixel_clk_khz; 37 }; 38 39 struct dccg { 40 struct dc_context *ctx; 41 const struct display_clock_funcs *funcs; 42 43 enum dm_pp_clocks_state max_clks_state; 44 enum dm_pp_clocks_state cur_min_clks_state; 45 struct dc_clocks clks; 46 }; 47 48 struct display_clock_funcs { 49 void (*update_clocks)(struct dccg *dccg, 50 struct dc_clocks *new_clocks, 51 bool safe_to_lower); 52 int (*set_dispclk)(struct dccg *dccg, 53 int requested_clock_khz); 54 55 int (*get_dp_ref_clk_frequency)(struct dccg *dccg); 56 }; 57 58 #endif /* __DISPLAY_CLOCK_H__ */ 59