diff options
| author | Peikang Zhang <peikang.zhang@amd.com> | 2020-09-03 20:45:07 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-09-22 19:27:35 +0300 |
| commit | cbf229bbcb7fcc5f4f75f64eee7e224aa1b31ad2 (patch) | |
| tree | e267c39fea5b71a41c1c1d244fe9a0801d77bdcb /drivers/gpu | |
| parent | c15bc8d285fe052bc3a30ae5ea0919c3101981ef (diff) | |
| download | linux-cbf229bbcb7fcc5f4f75f64eee7e224aa1b31ad2.tar.xz | |
drm/amd/display: Bug in dce_is_panel_backlight_on()
[Why]
dce_is_panel_backlight_on() will return wrong value if
LVTMA_BLON_OVRD is 0
[How]
When LVTMA_BLON_OVRD is 0, read
LVTMA_PWRSEQ_TARGET_STATE instead
Signed-off-by: Peikang Zhang <peikang.zhang@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.h | 4 |
2 files changed, 11 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c b/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c index df7f826eebd8..74f7619d4154 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.c @@ -159,11 +159,15 @@ static uint32_t dce_panel_cntl_hw_init(struct panel_cntl *panel_cntl) static bool dce_is_panel_backlight_on(struct panel_cntl *panel_cntl) { struct dce_panel_cntl *dce_panel_cntl = TO_DCE_PANEL_CNTL(panel_cntl); - uint32_t value; + uint32_t blon, blon_ovrd, pwrseq_target_state; - REG_GET(PWRSEQ_CNTL, LVTMA_BLON, &value); + REG_GET_2(PWRSEQ_CNTL, LVTMA_BLON, &blon, LVTMA_BLON_OVRD, &blon_ovrd); + REG_GET(PWRSEQ_CNTL, LVTMA_PWRSEQ_TARGET_STATE, &pwrseq_target_state); - return value; + if (blon_ovrd) + return blon; + else + return pwrseq_target_state; } static bool dce_is_panel_powered_on(struct panel_cntl *panel_cntl) diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.h b/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.h index 967d04d75b98..6bd1196083a3 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.h +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_panel_cntl.h @@ -61,8 +61,10 @@ #define DCE_PANEL_CNTL_MASK_SH_LIST(mask_sh) \ DCE_PANEL_CNTL_SF(LVTMA_PWRSEQ_CNTL, LVTMA_BLON, mask_sh),\ + DCE_PANEL_CNTL_SF(LVTMA_PWRSEQ_CNTL, LVTMA_BLON_OVRD, mask_sh),\ DCE_PANEL_CNTL_SF(LVTMA_PWRSEQ_CNTL, LVTMA_DIGON, mask_sh),\ DCE_PANEL_CNTL_SF(LVTMA_PWRSEQ_CNTL, LVTMA_DIGON_OVRD, mask_sh),\ + DCE_PANEL_CNTL_SF(LVTMA_PWRSEQ_CNTL, LVTMA_PWRSEQ_TARGET_STATE, mask_sh), \ DCE_PANEL_CNTL_SF(LVTMA_PWRSEQ_STATE, LVTMA_PWRSEQ_TARGET_STATE_R, mask_sh), \ DCE_PANEL_CNTL_SF(LVTMA_PWRSEQ_REF_DIV, BL_PWM_REF_DIV, mask_sh), \ DCE_PANEL_CNTL_SF(BL_PWM_PERIOD_CNTL, BL_PWM_PERIOD, mask_sh), \ @@ -76,8 +78,10 @@ #define DCE_PANEL_CNTL_REG_FIELD_LIST(type) \ type LVTMA_BLON;\ + type LVTMA_BLON_OVRD;\ type LVTMA_DIGON;\ type LVTMA_DIGON_OVRD;\ + type LVTMA_PWRSEQ_TARGET_STATE; \ type LVTMA_PWRSEQ_TARGET_STATE_R; \ type BL_PWM_REF_DIV; \ type BL_PWM_EN; \ |