diff options
| author | Eric Huang <JinHuiEric.Huang@amd.com> | 2016-03-30 16:30:12 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-05-04 20:18:40 -0400 |
| commit | a4333b4c9960a8f8d699910d4ae11c5eaefd8c25 (patch) | |
| tree | 80904450ff4a137acf6ce378cb0e9e28aea3ba06 /drivers/gpu | |
| parent | a1d29476d666f5972f200c49e76df339ced6b07a (diff) | |
drm/amd/powerplay: add deep sleep divider id into DPM table on Tonga
Add a proper implementation for setting the deep sleep divider.
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c index 0d5d8372953e..fee783555365 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c @@ -2415,6 +2415,25 @@ int tonga_calculate_sclk_params(struct pp_hwmgr *hwmgr, return 0; } +static uint8_t tonga_get_sleep_divider_id_from_clock(struct pp_hwmgr *hwmgr, + uint32_t engine_clock, uint32_t min_engine_clock_in_sr) +{ + uint32_t i, temp; + uint32_t min = (min_engine_clock_in_sr > TONGA_MINIMUM_ENGINE_CLOCK) ? + min_engine_clock_in_sr : TONGA_MINIMUM_ENGINE_CLOCK; + + PP_ASSERT_WITH_CODE((engine_clock >= min), + "Engine clock can't satisfy stutter requirement!", return 0); + + for (i = TONGA_MAX_DEEPSLEEP_DIVIDER_ID;; i--) { + temp = engine_clock / (1 << i); + + if(temp >= min || i == 0) + break; + } + return (uint8_t)i; +} + /** * Populates single SMC SCLK structure using the provided engine clock * @@ -2463,12 +2482,12 @@ static int tonga_populate_single_graphic_level(struct pp_hwmgr *hwmgr, uint32_t *get the DAL clock. do it in funture. PECI_GetMinClockSettings(hwmgr->peci, &minClocks); data->display_timing.min_clock_insr = minClocks.engineClockInSR; - - if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_SclkDeepSleep)) - { - graphic_level->DeepSleepDivId = PhwTonga_GetSleepDividerIdFromClock(hwmgr, engine_clock, minClocks.engineClockInSR); - } */ + if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps, + PHM_PlatformCaps_SclkDeepSleep)) + graphic_level->DeepSleepDivId = + tonga_get_sleep_divider_id_from_clock(hwmgr, engine_clock, + data->display_timing.min_clock_insr); /* Default to slow, highest DPM level will be set to PPSMC_DISPLAY_WATERMARK_LOW later.*/ graphic_level->DisplayWatermark = PPSMC_DISPLAY_WATERMARK_LOW; |