From: Kuogee Hsieh <khsieh@codeaurora.org> To: dri-devel@lists.freedesktop.org, robdclark@gmail.com, sean@poorly.run, swboyd@chromium.org Cc: Kuogee Hsieh <khsieh@codeaurora.org>, abhinavk@codeaurora.org, aravindh@codeaurora.org, airlied@linux.ie, daniel@ffwll.ch, bjorn.andersson@linaro.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 5/7] drm/msm/dp: return correct edid checksum after corrupted edid checksum read Date: Tue, 13 Jul 2021 08:54:05 -0700 [thread overview] Message-ID: <1626191647-13901-6-git-send-email-khsieh@codeaurora.org> (raw) In-Reply-To: <1626191647-13901-1-git-send-email-khsieh@codeaurora.org> 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); dp_link_send_test_response(panel->link); -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
WARNING: multiple messages have this Message-ID (diff)
From: Kuogee Hsieh <khsieh@codeaurora.org> To: dri-devel@lists.freedesktop.org, robdclark@gmail.com, sean@poorly.run, swboyd@chromium.org Cc: airlied@linux.ie, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, abhinavk@codeaurora.org, bjorn.andersson@linaro.org, Kuogee Hsieh <khsieh@codeaurora.org>, aravindh@codeaurora.org, freedreno@lists.freedesktop.org Subject: [PATCH v2 5/7] drm/msm/dp: return correct edid checksum after corrupted edid checksum read Date: Tue, 13 Jul 2021 08:54:05 -0700 [thread overview] Message-ID: <1626191647-13901-6-git-send-email-khsieh@codeaurora.org> (raw) In-Reply-To: <1626191647-13901-1-git-send-email-khsieh@codeaurora.org> 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); dp_link_send_test_response(panel->link); -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2021-07-13 15:55 UTC|newest] Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-13 15:54 [PATCH v2 0/7] add fixes to pass DP Link Layer compliance test cases Kuogee Hsieh 2021-07-13 15:54 ` Kuogee Hsieh 2021-07-13 15:54 ` [PATCH v2 1/7] drm/msm/dp: use dp_ctrl_off_link_stream during PHY compliance test run Kuogee Hsieh 2021-07-13 15:54 ` Kuogee Hsieh 2021-07-22 19:01 ` Stephen Boyd 2021-07-22 19:01 ` Stephen Boyd 2021-07-13 15:54 ` [PATCH v2 2/7] drm/msm/dp: reduce link rate if failed at link training 1 Kuogee Hsieh 2021-07-13 15:54 ` Kuogee Hsieh 2021-07-22 19:05 ` Stephen Boyd 2021-07-22 19:05 ` Stephen Boyd 2021-07-13 15:54 ` [PATCH v2 3/7] drm/msm/dp: reset aux controller after dp_aux_cmd_fifo_tx() failed Kuogee Hsieh 2021-07-13 15:54 ` Kuogee Hsieh 2021-07-22 19:08 ` Stephen Boyd 2021-07-22 19:08 ` Stephen Boyd 2021-07-13 15:54 ` [PATCH v2 4/7] drm/msm/dp: replug event is converted into an unplug followed by an plug events Kuogee Hsieh 2021-07-13 15:54 ` Kuogee Hsieh 2021-07-22 19:24 ` Stephen Boyd 2021-07-22 19:24 ` Stephen Boyd 2021-07-13 15:54 ` Kuogee Hsieh [this message] 2021-07-13 15:54 ` [PATCH v2 5/7] drm/msm/dp: return correct edid checksum after corrupted edid checksum read Kuogee Hsieh 2021-07-22 19:23 ` Stephen Boyd 2021-07-22 19:23 ` Stephen Boyd 2021-07-29 16:17 ` khsieh 2021-07-29 16:17 ` khsieh 2021-07-13 15:54 ` [PATCH v2 6/7] drm/msm/dp: do not end dp link training until video is ready Kuogee Hsieh 2021-07-13 15:54 ` Kuogee Hsieh 2021-07-22 19:15 ` Stephen Boyd 2021-07-22 19:15 ` Stephen Boyd 2021-07-13 15:54 ` [PATCH v2 7/7] drm/msm/dp: retrain link when loss of symbol lock detected Kuogee Hsieh 2021-07-13 15:54 ` Kuogee Hsieh 2021-07-22 19:14 ` Stephen Boyd 2021-07-22 19:14 ` Stephen Boyd
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