| Message ID | 1625592020-22658-6-git-send-email-khsieh@codeaurora.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | add fixes to pass DP Link Layer compliance test cases | expand |
Quoting Kuogee Hsieh (2021-07-06 10:20:18) > Response with correct edid checksum saved at connector after corrupted edid > checksum read. This fixes Link Layer CTS cases 4.2.2.3, 4.2.2.6. > > Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org> > --- > drivers/gpu/drm/msm/dp/dp_panel.c | 9 +++++++-- > 1 file changed, 7 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c b/drivers/gpu/drm/msm/dp/dp_panel.c > index 88196f7..0fdb551 100644 > --- a/drivers/gpu/drm/msm/dp/dp_panel.c > +++ b/drivers/gpu/drm/msm/dp/dp_panel.c > @@ -271,7 +271,7 @@ static u8 dp_panel_get_edid_checksum(struct edid *edid) > { > struct edid *last_block; > u8 *raw_edid; > - bool is_edid_corrupt; > + bool is_edid_corrupt = false; > > if (!edid) { > DRM_ERROR("invalid edid input\n"); > @@ -303,7 +303,12 @@ void dp_panel_handle_sink_request(struct dp_panel *dp_panel) > panel = container_of(dp_panel, struct dp_panel_private, dp_panel); > > if (panel->link->sink_request & DP_TEST_LINK_EDID_READ) { > - u8 checksum = dp_panel_get_edid_checksum(dp_panel->edid); > + u8 checksum; > + > + if (dp_panel->edid) > + checksum = dp_panel_get_edid_checksum(dp_panel->edid); > + else > + checksum = dp_panel->connector->real_edid_checksum; > > dp_link_send_edid_checksum(panel->link, checksum); It looks like this can be drm_dp_send_real_edid_checksum()? Then we don't have to look at the connector internals sometimes and can drop dp_panel_get_edid_checksum() entirely? > dp_link_send_test_response(panel->link);
On 2021-07-08 00:14, Stephen Boyd wrote: > Quoting Kuogee Hsieh (2021-07-06 10:20:18) >> Response with correct edid checksum saved at connector after corrupted >> edid >> checksum read. This fixes Link Layer CTS cases 4.2.2.3, 4.2.2.6. >> >> Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org> >> --- >> drivers/gpu/drm/msm/dp/dp_panel.c | 9 +++++++-- >> 1 file changed, 7 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c >> b/drivers/gpu/drm/msm/dp/dp_panel.c >> index 88196f7..0fdb551 100644 >> --- a/drivers/gpu/drm/msm/dp/dp_panel.c >> +++ b/drivers/gpu/drm/msm/dp/dp_panel.c >> @@ -271,7 +271,7 @@ static u8 dp_panel_get_edid_checksum(struct edid >> *edid) >> { >> struct edid *last_block; >> u8 *raw_edid; >> - bool is_edid_corrupt; >> + bool is_edid_corrupt = false; >> >> if (!edid) { >> DRM_ERROR("invalid edid input\n"); >> @@ -303,7 +303,12 @@ void dp_panel_handle_sink_request(struct dp_panel >> *dp_panel) >> panel = container_of(dp_panel, struct dp_panel_private, >> dp_panel); >> >> if (panel->link->sink_request & DP_TEST_LINK_EDID_READ) { >> - u8 checksum = >> dp_panel_get_edid_checksum(dp_panel->edid); >> + u8 checksum; >> + >> + if (dp_panel->edid) >> + checksum = >> dp_panel_get_edid_checksum(dp_panel->edid); >> + else >> + checksum = >> dp_panel->connector->real_edid_checksum; >> >> dp_link_send_edid_checksum(panel->link, checksum); > > It looks like this can be drm_dp_send_real_edid_checksum()? Then we > don't have to look at the connector internals sometimes and can drop > dp_panel_get_edid_checksum() entirely? you still need to pass read edid checksum into drm_dp_send_real_edid_checksum(). > >> dp_link_send_test_response(panel->link);
diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c b/drivers/gpu/drm/msm/dp/dp_panel.c index 88196f7..0fdb551 100644 --- a/drivers/gpu/drm/msm/dp/dp_panel.c +++ b/drivers/gpu/drm/msm/dp/dp_panel.c @@ -271,7 +271,7 @@ static u8 dp_panel_get_edid_checksum(struct edid *edid) { struct edid *last_block; u8 *raw_edid; - bool is_edid_corrupt; + bool is_edid_corrupt = false; if (!edid) { DRM_ERROR("invalid edid input\n"); @@ -303,7 +303,12 @@ void dp_panel_handle_sink_request(struct dp_panel *dp_panel) panel = container_of(dp_panel, struct dp_panel_private, dp_panel); if (panel->link->sink_request & DP_TEST_LINK_EDID_READ) { - u8 checksum = dp_panel_get_edid_checksum(dp_panel->edid); + u8 checksum; + + if (dp_panel->edid) + checksum = dp_panel_get_edid_checksum(dp_panel->edid); + else + checksum = dp_panel->connector->real_edid_checksum; dp_link_send_edid_checksum(panel->link, checksum); dp_link_send_test_response(panel->link);
Response with correct edid checksum saved at connector after corrupted edid checksum read. This fixes Link Layer CTS cases 4.2.2.3, 4.2.2.6. Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org> --- drivers/gpu/drm/msm/dp/dp_panel.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)