diff options
| author |   Jacky Liao <ziyu.liao@amd.com> | 2020-11-12 16:18:10 -0500 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2020-11-24 12:08:36 -0500 |
| commit | 3ba0a5f3eef92d3762495af9418b542ad861ca3a (patch) | |
| tree | fc0362b34f277df6c4fd12d19309b9da88e500c7 /drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp_cm.c | |
| parent | drm/amd/display: remove macro which is in header already (diff) | |
| download | linux-dev-3ba0a5f3eef92d3762495af9418b542ad861ca3a.tar.xz linux-dev-3ba0a5f3eef92d3762495af9418b542ad861ca3a.zip | |
drm/amd/display: Add GAMCOR memory shutdown support
[Why]
The GAMCOR memory blocks should be powered down when they're not in use.
This will reduce power consumption.
[How]
Write to GAMCOR_MEM_PWR_FORCE to put memory to shutdown
when GAMCOR is not used.
Signed-off-by: Jacky Liao <ziyu.liao@amd.com>
Reviewed-by: Eric Yang <eric.yang2@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp_cm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp_cm.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp_cm.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp_cm.c index 9ab63c72f21c..9da66e491116 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp_cm.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp_cm.c @@ -136,9 +136,13 @@ static void dpp3_power_on_gamcor_lut( uint32_t power_status; struct dcn3_dpp *dpp = TO_DCN30_DPP(dpp_base); - - REG_SET(CM_MEM_PWR_CTRL, 0, - GAMCOR_MEM_PWR_DIS, power_on == true ? 0:1); + if (dpp_base->ctx->dc->debug.enable_mem_low_power.bits.cm) { + REG_UPDATE(CM_MEM_PWR_CTRL, GAMCOR_MEM_PWR_FORCE, power_on ? 0 : 3); + if (power_on) + REG_WAIT(CM_MEM_PWR_STATUS, GAMCOR_MEM_PWR_STATE, 0, 1, 5); + } else + REG_SET(CM_MEM_PWR_CTRL, 0, + GAMCOR_MEM_PWR_DIS, power_on == true ? 0:1); REG_GET(CM_MEM_PWR_STATUS, GAMCOR_MEM_PWR_STATE, &power_status); if (power_status != 0) @@ -229,6 +233,8 @@ bool dpp3_program_gamcor_lut( if (params == NULL) { //bypass if we have no pwl data REG_SET(CM_GAMCOR_CONTROL, 0, CM_GAMCOR_MODE, 0); + if (dpp_base->ctx->dc->debug.enable_mem_low_power.bits.cm) + dpp3_power_on_gamcor_lut(dpp_base, false); return false; } dpp3_power_on_gamcor_lut(dpp_base, true); |