diff options
| author | Jacky Liao <ziyu.liao@amd.com> | 2020-11-11 18:29:42 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-11-24 12:08:09 -0500 |
| commit | 49d067dcf2844efd78562069574dbe25a75eb5d2 (patch) | |
| tree | 915da0ce16bb603a3c79dbc96decfb79f6b48a28 /drivers/gpu/drm/amd/display/dc | |
| parent | 63c954a1ff8b0f63dcabf8bb2d3b3c895a69ed89 (diff) | |
| download | lwn-49d067dcf2844efd78562069574dbe25a75eb5d2.tar.gz lwn-49d067dcf2844efd78562069574dbe25a75eb5d2.zip | |
drm/amd/display: Add BLNDGAM memory shutdown support
[Why]
The BLNDGAM memory blocks should be powered down when they're not in
use. This will reduce power consumption.
[How]
1. Write to BLNDGAM_MEM_PWR_FORCE to put memory to shutdown when BLNDGAM
is not used.
2. Added a debug option to allow this behaviour to be turned off
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')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c | 13 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.h | 4 |
2 files changed, 13 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c index 29231528f052..052bab3e5e8e 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c @@ -500,9 +500,14 @@ static void dpp3_power_on_blnd_lut( { struct dcn3_dpp *dpp = TO_DCN30_DPP(dpp_base); - REG_SET(CM_MEM_PWR_CTRL, 0, - BLNDGAM_MEM_PWR_FORCE, power_on == true ? 0:1); - + if (dpp_base->ctx->dc->debug.enable_mem_low_power.bits.cm) { + REG_UPDATE(CM_MEM_PWR_CTRL, BLNDGAM_MEM_PWR_FORCE, power_on ? 0 : 3); + if (power_on) + REG_WAIT(CM_MEM_PWR_STATUS, BLNDGAM_MEM_PWR_STATE, 0, 1, 5); + } else { + REG_SET(CM_MEM_PWR_CTRL, 0, + BLNDGAM_MEM_PWR_FORCE, power_on == true ? 0 : 1); + } } static void dpp3_configure_blnd_lut( @@ -675,6 +680,8 @@ bool dpp3_program_blnd_lut( if (params == NULL) { REG_SET(CM_BLNDGAM_CONTROL, 0, CM_BLNDGAM_MODE, 0); + if (dpp_base->ctx->dc->debug.enable_mem_low_power.bits.cm) + dpp3_power_on_blnd_lut(dpp_base, false); return false; } diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.h b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.h index 81bf2ecc2831..2ae5e1f93dd4 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.h +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.h @@ -343,6 +343,7 @@ TF_SF(DSCL0_DSCL_MEM_PWR_CTRL, LUT_MEM_PWR_FORCE, mask_sh) #define DPP_REG_LIST_SH_MASK_DCN30_UPDATED(mask_sh)\ + TF_SF(CM0_CM_MEM_PWR_STATUS, BLNDGAM_MEM_PWR_STATE, mask_sh), \ TF_SF(CM0_CM_BLNDGAM_CONTROL, CM_BLNDGAM_MODE, mask_sh), \ TF_SF(CM0_CM_BLNDGAM_CONTROL, CM_BLNDGAM_MODE_CURRENT, mask_sh), \ TF_SF(CM0_CM_BLNDGAM_CONTROL, CM_BLNDGAM_SELECT_CURRENT, mask_sh), \ @@ -446,7 +447,8 @@ type CM_BLNDGAM_MODE_CURRENT; \ type CM_BLNDGAM_SELECT_CURRENT; \ type CM_BLNDGAM_SELECT; \ - type GAMCOR_MEM_PWR_STATE + type GAMCOR_MEM_PWR_STATE; \ + type BLNDGAM_MEM_PWR_STATE struct dcn3_dpp_shift { DPP_REG_FIELD_LIST_DCN3(uint8_t); |