drm/amd/display: Fix assertion due to disable/enable CM blocks

[why]
Some dc state transitions can result in CM blocks being disabled, then
re-enabled.  The disable will set a defer bit, but re-enable will not
clear it.  When optimizing later, an assert will be hit due to incorrect
expected HW state.

[how]
Clear defer bits if the block is re-enabled before optimization is
executed.

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Aric Cyr <Aric.Cyr@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/dpp/dcn30/dcn30_dpp.c b/drivers/gpu/drm/amd/display/dc/dpp/dcn30/dcn30_dpp.c
index 8faffc2..2ebc738 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dpp/dcn30/dcn30_dpp.c
+++ b/drivers/gpu/drm/amd/display/dc/dpp/dcn30/dcn30_dpp.c
@@ -603,6 +603,7 @@ static void dpp3_power_on_blnd_lut(
                if (power_on) {
                        REG_UPDATE(CM_MEM_PWR_CTRL, BLNDGAM_MEM_PWR_FORCE, 0);
                        REG_WAIT(CM_MEM_PWR_STATUS, BLNDGAM_MEM_PWR_STATE, 0, 1, 5);
+                       dpp_base->deferred_reg_writes.bits.disable_blnd_lut = false;
                } else {
                        dpp_base->ctx->dc->optimized_required = true;
                        dpp_base->deferred_reg_writes.bits.disable_blnd_lut = true;
@@ -620,6 +621,7 @@ static void dpp3_power_on_hdr3dlut(
                if (power_on) {
                        REG_UPDATE(CM_MEM_PWR_CTRL2, HDR3DLUT_MEM_PWR_FORCE, 0);
                        REG_WAIT(CM_MEM_PWR_STATUS2, HDR3DLUT_MEM_PWR_STATE, 0, 1, 5);
+                       dpp_base->deferred_reg_writes.bits.disable_3dlut = false;
                } else {
                        dpp_base->ctx->dc->optimized_required = true;
                        dpp_base->deferred_reg_writes.bits.disable_3dlut = true;
@@ -637,6 +639,7 @@ static void dpp3_power_on_shaper(
                if (power_on) {
                        REG_UPDATE(CM_MEM_PWR_CTRL2, SHAPER_MEM_PWR_FORCE, 0);
                        REG_WAIT(CM_MEM_PWR_STATUS2, SHAPER_MEM_PWR_STATE, 0, 1, 5);
+                       dpp_base->deferred_reg_writes.bits.disable_shaper = false;
                } else {
                        dpp_base->ctx->dc->optimized_required = true;
                        dpp_base->deferred_reg_writes.bits.disable_shaper = true;

diff --git a/drivers/gpu/drm/amd/display/dc/dpp/dcn30/dcn30_dpp_cm.c b/drivers/gpu/drm/amd/display/dc/dpp/dcn30/dcn30_dpp_cm.c
index 99581f3..e01d8e9 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dpp/dcn30/dcn30_dpp_cm.c
+++ b/drivers/gpu/drm/amd/display/dc/dpp/dcn30/dcn30_dpp_cm.c
@@ -136,6 +136,7 @@ static void dpp3_power_on_gamcor_lut(
                        if (dpp_base->ctx->dc->caps.ips_v2_support)
                                REG_UPDATE(CM_MEM_PWR_CTRL, GAMCOR_MEM_PWR_DIS, 1);
                        REG_WAIT(CM_MEM_PWR_STATUS, GAMCOR_MEM_PWR_STATE, 0, 1, 5);
+                       dpp_base->deferred_reg_writes.bits.disable_gamcor = false;
                } else {
                        dpp_base->ctx->dc->optimized_required = true;
                        dpp_base->deferred_reg_writes.bits.disable_gamcor = true;

diff --git a/drivers/gpu/drm/amd/display/dc/dpp/dcn401/dcn401_dpp_dscl.c b/drivers/gpu/drm/amd/display/dc/dpp/dcn401/dcn401_dpp_dscl.c
index df3c21e..62994ae 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dpp/dcn401/dcn401_dpp_dscl.c
+++ b/drivers/gpu/drm/amd/display/dc/dpp/dcn401/dcn401_dpp_dscl.c
@@ -161,6 +161,7 @@ static void dpp401_power_on_dscl(
                                REG_WAIT(DSCL_MEM_PWR_STATUS, LUT_MEM_PWR_STATE, 0, 1, 100);
                        } else
                                REG_WAIT(DSCL_MEM_PWR_STATUS, LUT_MEM_PWR_STATE, 0, 1, 5);
+                       dpp->base.deferred_reg_writes.bits.disable_dscl = false;
                } else {
                        if (dpp->base.ctx->dc->debug.enable_mem_low_power.bits.dscl) {
                                dpp->base.ctx->dc->optimized_required = true;