bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-18 14:53:58 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amd/display: refactor pplib/smu communication

Browse Source 
new per SoC interface instead legacy interface with lots of un-used
field that only cause confusion

model pp_smu like one of our HW objects with func_ptr interface
to call into it.  struct pp_smu as handle to call pp/smu

Signed-off-by: Tony Cheng <tony.cheng@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tony Cheng
2017-08-13 13:50:52 -04:00
committed by Alex Deucher
parent 1e8635ea0e
commit a185048ca8
8 changed files with 209 additions and 56 deletions
Download Patch File Download Diff File Expand all files Collapse all files

131
drivers/gpu/drm/amd/display/dc/dm_pp_smu.h Normal file
View File

@@ -0,0 +1,131 @@
/*
* Copyright 2017 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 DM_PP_SMU_IF__H
#define DM_PP_SMU_IF__H
/*
* interface to PPLIB/SMU to setup clocks and pstate requirements on SoC
*/
struct pp_smu {
struct dc_context *ctx;
};
enum wm_set_id {
WM_A,
WM_B,
WM_C,
WM_D,
WM_COUNT,
};
struct pp_smu_wm_set_range {
enum wm_set_id wm_inst;
uint32_t min_fill_clk_khz;
uint32_t max_fill_clk_khz;
uint32_t min_drain_clk_khz;
uint32_t max_drain_clk_khz;
};
struct pp_smu_wm_range_sets {
uint32_t num_reader_wm_sets;
struct pp_smu_wm_set_range reader_wm_sets[WM_COUNT];
uint32_t num_writer_wm_sets;
struct pp_smu_wm_set_range writer_wm_sets[WM_COUNT];
};
struct pp_smu_display_requirement_rv {
/* PPSMC_MSG_SetDisplayCount: count
* 0 triggers S0i2 optimization
*/
unsigned int display_count;
/* PPSMC_MSG_SetHardMinFclkByFreq: khz
* FCLK will vary with DPM, but never below requested hard min
*/
unsigned int hard_min_fclk_khz;
/* PPSMC_MSG_SetHardMinDcefclkByFreq: khz
* fixed clock at requested freq, either from FCH bypass or DFS
*/
unsigned int hard_min_dcefclk_khz;
/* PPSMC_MSG_SetMinDeepSleepDcefclk: mhz
* when DF is in cstate, dcf clock is further divided down
* to just above given frequency
*/
unsigned int min_deep_sleep_dcefclk_mhz;
};
struct pp_smu_funcs_rv {
struct pp_smu pp_smu;
void (*set_display_requirement)(struct pp_smu *pp,
struct pp_smu_display_requirement_rv *req);
/* which SMU message? are reader and writer WM separate SMU msg? */
void (*set_wm_ranges)(struct pp_smu *pp,
struct pp_smu_wm_range_sets *ranges);
};
#if 0
struct pp_smu_funcs_rv {
/* PPSMC_MSG_SetDisplayCount
* 0 triggers S0i2 optimization
*/
void (*set_display_count)(struct pp_smu *pp, int count);
/* PPSMC_MSG_SetHardMinFclkByFreq
* FCLK will vary with DPM, but never below requested hard min
*/
void (*set_hard_min_fclk_by_freq)(struct pp_smu *pp, int khz);
/* PPSMC_MSG_SetHardMinDcefclkByFreq
* fixed clock at requested freq, either from FCH bypass or DFS
*/
void (*set_hard_min_dcefclk_by_freq)(struct pp_smu *pp, int khz);
/* PPSMC_MSG_SetMinDeepSleepDcefclk
* when DF is in cstate, dcf clock is further divided down
* to just above given frequency
*/
void (*set_min_deep_sleep_dcefclk)(struct pp_smu *pp, int mhz);
/* todo: aesthetic
* watermark range table
*/
/* todo: functional/feature
* PPSMC_MSG_SetHardMinSocclkByFreq: required to support DWB
*/
};
#endif
#endif /* DM_PP_SMU_IF__H */