From: Kuogee Hsieh <quic_khsieh@quicinc.com> To: <robdclark@gmail.com>, <sean@poorly.run>, <swboyd@chromium.org>, <vkoul@kernel.org>, <daniel@ffwll.ch>, <airlied@linux.ie>, <agross@kernel.org>, <dmitry.baryshkov@linaro.org>, <bjorn.andersson@linaro.org> Cc: linux-arm-msm@vger.kernel.org, quic_abhinavk@quicinc.com, dri-devel@lists.freedesktop.org, quic_khsieh@quicinc.com, aravindh@codeaurora.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] drm/msm/dp: always add fail-safe mode into connector mode list Date: Mon, 24 Jan 2022 15:17:54 -0800 [thread overview] Message-ID: <1643066274-25814-1-git-send-email-quic_khsieh@quicinc.com> (raw) Some of DP link compliant test expects to return fail-safe mode if prefer detailed timing mode can not be supported by mainlink's lane and rate after link training. Therefore add fail-safe mode into connector mode list as backup mode. This patch fixes test case 4.2.2.1. Changes in v2: -- add Fixes text string Fixes: 4b85d405cfe9 ( "drm/msm/dp: reduce link rate if failed at link training 1") Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com> --- drivers/gpu/drm/msm/dp/dp_panel.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c b/drivers/gpu/drm/msm/dp/dp_panel.c index 71db10c..f141872 100644 --- a/drivers/gpu/drm/msm/dp/dp_panel.c +++ b/drivers/gpu/drm/msm/dp/dp_panel.c @@ -212,6 +212,11 @@ int dp_panel_read_sink_caps(struct dp_panel *dp_panel, if (drm_add_modes_noedid(connector, 640, 480)) drm_set_preferred_mode(connector, 640, 480); mutex_unlock(&connector->dev->mode_config.mutex); + } else { + /* always add fail-safe mode as backup mode */ + mutex_lock(&connector->dev->mode_config.mutex); + drm_add_modes_noedid(connector, 640, 480); + mutex_unlock(&connector->dev->mode_config.mutex); } if (panel->aux_cfg_update_done) { -- 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 <quic_khsieh@quicinc.com> To: <robdclark@gmail.com>, <sean@poorly.run>, <swboyd@chromium.org>, <vkoul@kernel.org>, <daniel@ffwll.ch>, <airlied@linux.ie>, <agross@kernel.org>, <dmitry.baryshkov@linaro.org>, <bjorn.andersson@linaro.org> Cc: <quic_abhinavk@quicinc.com>, <aravindh@codeaurora.org>, <quic_khsieh@quicinc.com>, <freedreno@lists.freedesktop.org>, <dri-devel@lists.freedesktop.org>, <linux-arm-msm@vger.kernel.org>, <linux-kernel@vger.kernel.org> Subject: [PATCH v2] drm/msm/dp: always add fail-safe mode into connector mode list Date: Mon, 24 Jan 2022 15:17:54 -0800 [thread overview] Message-ID: <1643066274-25814-1-git-send-email-quic_khsieh@quicinc.com> (raw) Some of DP link compliant test expects to return fail-safe mode if prefer detailed timing mode can not be supported by mainlink's lane and rate after link training. Therefore add fail-safe mode into connector mode list as backup mode. This patch fixes test case 4.2.2.1. Changes in v2: -- add Fixes text string Fixes: 4b85d405cfe9 ( "drm/msm/dp: reduce link rate if failed at link training 1") Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com> --- drivers/gpu/drm/msm/dp/dp_panel.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c b/drivers/gpu/drm/msm/dp/dp_panel.c index 71db10c..f141872 100644 --- a/drivers/gpu/drm/msm/dp/dp_panel.c +++ b/drivers/gpu/drm/msm/dp/dp_panel.c @@ -212,6 +212,11 @@ int dp_panel_read_sink_caps(struct dp_panel *dp_panel, if (drm_add_modes_noedid(connector, 640, 480)) drm_set_preferred_mode(connector, 640, 480); mutex_unlock(&connector->dev->mode_config.mutex); + } else { + /* always add fail-safe mode as backup mode */ + mutex_lock(&connector->dev->mode_config.mutex); + drm_add_modes_noedid(connector, 640, 480); + mutex_unlock(&connector->dev->mode_config.mutex); } if (panel->aux_cfg_update_done) { -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
next reply other threads:[~2022-01-24 23:18 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-01-24 23:17 Kuogee Hsieh [this message] 2022-01-24 23:17 ` [PATCH v2] drm/msm/dp: always add fail-safe mode into connector mode list Kuogee Hsieh 2022-02-14 16:41 ` Kuogee Hsieh 2022-02-14 16:41 ` Kuogee Hsieh 2022-02-16 19:32 ` Stephen Boyd 2022-02-16 19:32 ` Stephen Boyd
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