Release 4.17 drivers/gpu/drm/amd/display/dc/inc/clock_source.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_CLOCK_SOURCE_H__
#define __DC_CLOCK_SOURCE_H__
#include "dc_types.h"
#include "include/grph_object_id.h"
#include "include/bios_parser_types.h"
struct clock_source;
struct spread_spectrum_data {
uint32_t percentage; /*> In unit of 0.01% or 0.001%*/
uint32_t percentage_divider; /*> 100 or 1000 */
uint32_t freq_range_khz;
uint32_t modulation_freq_hz;
struct spread_spectrum_flags flags;
};
struct delta_sigma_data {
uint32_t feedback_amount;
uint32_t nfrac_amount;
uint32_t ds_frac_size;
uint32_t ds_frac_amount;
};
/**
* Pixel Clock Parameters structure
* These parameters are required as input
* when calculating Pixel Clock Dividers for requested Pixel Clock
*/
struct pixel_clk_flags {
uint32_t ENABLE_SS:1;
uint32_t DISPLAY_BLANKED:1;
uint32_t PROGRAM_PIXEL_CLOCK:1;
uint32_t PROGRAM_ID_CLOCK:1;
uint32_t SUPPORT_YCBCR420:1;
};
/**
* Display Port HW De spread of Reference Clock related Parameters structure
* Store it once at boot for later usage
*/
struct csdp_ref_clk_ds_params {
bool hw_dso_n_dp_ref_clk;
/* Flag for HW De Spread enabled (if enabled SS on DP Reference Clock)*/
uint32_t avg_dp_ref_clk_khz;
/* Average DP Reference clock (in KHz)*/
uint32_t ss_percentage_on_dp_ref_clk;
/* DP Reference clock SS percentage
* (not to be mixed with DP IDCLK SS from PLL Settings)*/
uint32_t ss_percentage_divider;
/* DP Reference clock SS percentage divider */
};
struct pixel_clk_params {
uint32_t requested_pix_clk; /* in KHz */
/*> Requested Pixel Clock
* (based on Video Timing standard used for requested mode)*/
uint32_t requested_sym_clk; /* in KHz */
/*> Requested Sym Clock (relevant only for display port)*/
uint32_t dp_ref_clk; /* in KHz */
/*> DP reference clock - calculated only for DP signal for specific cases*/
struct graphics_object_id encoder_object_id;
/*> Encoder object Id - needed by VBIOS Exec table*/
enum signal_type signal_type;
/*> signalType -> Encoder Mode - needed by VBIOS Exec table*/
enum controller_id controller_id;
/*> ControllerId - which controller using this PLL*/
enum dc_color_depth color_depth;
struct csdp_ref_clk_ds_params de_spread_params;
/*> de-spread info, relevant only for on-the-fly tune-up pixel rate*/
enum dc_pixel_encoding pixel_encoding;
struct pixel_clk_flags flags;
};
/**
* Pixel Clock Dividers structure with desired Pixel Clock
* (adjusted after VBIOS exec table),
* with actually calculated Clock and reference Crystal frequency
*/
struct pll_settings {
uint32_t actual_pix_clk;
uint32_t adjusted_pix_clk;
uint32_t calculated_pix_clk;
uint32_t vco_freq;
uint32_t reference_freq;
uint32_t reference_divider;
uint32_t feedback_divider;
uint32_t fract_feedback_divider;
uint32_t pix_clk_post_divider;
uint32_t ss_percentage;
bool use_external_clk;
};
struct calc_pll_clock_source_init_data {
struct dc_bios *bp;
uint32_t min_pix_clk_pll_post_divider;
uint32_t max_pix_clk_pll_post_divider;
uint32_t min_pll_ref_divider;
uint32_t max_pll_ref_divider;
uint32_t min_override_input_pxl_clk_pll_freq_khz;
/* if not 0, override the firmware info */
uint32_t max_override_input_pxl_clk_pll_freq_khz;
/* if not 0, override the firmware info */
uint32_t num_fract_fb_divider_decimal_point;
/* number of decimal point for fractional feedback divider value */
uint32_t num_fract_fb_divider_decimal_point_precision;
/* number of decimal point to round off for fractional feedback divider value*/
struct dc_context *ctx;
};
struct calc_pll_clock_source {
uint32_t ref_freq_khz;
uint32_t min_pix_clock_pll_post_divider;
uint32_t max_pix_clock_pll_post_divider;
uint32_t min_pll_ref_divider;
uint32_t max_pll_ref_divider;
uint32_t max_vco_khz;
uint32_t min_vco_khz;
uint32_t min_pll_input_freq_khz;
uint32_t max_pll_input_freq_khz;
uint32_t fract_fb_divider_decimal_points_num;
uint32_t fract_fb_divider_factor;
uint32_t fract_fb_divider_precision;
uint32_t fract_fb_divider_precision_factor;
struct dc_context *ctx;
};
struct clock_source_funcs {
bool (*cs_power_down)(
struct clock_source *);
bool (*program_pix_clk)(struct clock_source *,
struct pixel_clk_params *, struct pll_settings *);
uint32_t (*get_pix_clk_dividers)(
struct clock_source *,
struct pixel_clk_params *,
struct pll_settings *);
uint32_t (*get_pix_rate_in_hz)(
struct clock_source *,
struct pixel_clk_params *,
struct pll_settings *);
};
struct clock_source {
const struct clock_source_funcs *funcs;
struct dc_context *ctx;
enum clock_source_id id;
bool dp_clk_src;
};
#endif
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