From: Tom Chung <chiahsuan.chung@xxxxxxx>
[Why]
PSR-SU may cause some glitching randomly on some OLED panel.
[How]
Disable the PSR-SU for certain PSR-SU OLED panel.
Reviewed-by: Sun peng Li <sunpeng.li@xxxxxxx>
Signed-off-by: Tom Chung <chiahsuan.chung@xxxxxxx>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@xxxxxxx>
---
.../drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c | 20 +++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c
index 45858bf1523d..104f03868266 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c
@@ -30,6 +30,23 @@
#include "amdgpu_dm.h"
#include "modules/power/power_helpers.h"
+static bool is_specific_oled_panel(struct dc_link *link)
+{
+ if (!link->dpcd_sink_ext_caps.bits.oled)
+ return false;
+
+ /* Disable PSR-SU for some OLED panels to avoid glitches */
+ if (link->dpcd_caps.sink_dev_id == 0xBA4159) {
+ uint8_t sink_dev_id_str1[] = {'4', '0', 'C', 'U', '1'};
+
+ if (!memcmp(link->dpcd_caps.sink_dev_id_str, sink_dev_id_str1,
+ sizeof(sink_dev_id_str1)))
+ return true;
+ }
+
+ return false;
+}
+
static bool link_supports_psrsu(struct dc_link *link)
{
struct dc *dc = link->ctx->dc;
@@ -40,6 +57,9 @@ static bool link_supports_psrsu(struct dc_link *link)
if (dc->ctx->dce_version < DCN_VERSION_3_1)
return false;
+ if (is_specific_oled_panel(link))
+ return false;
+
if (!is_psr_su_specific_panel(link))
return false;
--
2.34.1
