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75 lines
2.2 KiB
Diff
75 lines
2.2 KiB
Diff
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From fa76cd6f0ed305fb2870083842b1ff7bcf027655 Mon Sep 17 00:00:00 2001
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From: Sandor Yu <Sandor.yu@nxp.com>
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Date: Mon, 9 Dec 2019 17:52:35 +0800
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Subject: [PATCH] LF-323-1: drm/bridge/cdns: move link training to bridge
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enable function
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Move link training and video enable functions from mode_set to
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bridge_enable. it is more reasonable.
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cdns_dp_mode_set don't needed in HPD thread, DP link training will
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resetup in bridge_enable when cable connecting.
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Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
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Reviewed-by: Robby Cai <robby.cai@nxp.com>
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---
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drivers/gpu/drm/bridge/cadence/cdns-dp-core.c | 34 +++++++++++++--------------
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1 file changed, 16 insertions(+), 18 deletions(-)
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--- a/drivers/gpu/drm/bridge/cadence/cdns-dp-core.c
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+++ b/drivers/gpu/drm/bridge/cadence/cdns-dp-core.c
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@@ -178,19 +178,6 @@ static void cdns_dp_mode_set(struct cdns
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return;
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}
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- /* Link trainning */
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- ret = cdns_mhdp_train_link(mhdp);
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- if (ret) {
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- DRM_DEV_ERROR(mhdp->dev, "Failed link train %d\n", ret);
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- return;
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- }
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-
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- ret = cdns_mhdp_set_video_status(mhdp, CONTROL_VIDEO_VALID);
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- if (ret) {
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- DRM_DEV_ERROR(mhdp->dev, "Failed to valid video %d\n", ret);
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- return;
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- }
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-
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return;
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}
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@@ -339,6 +326,21 @@ static void cdns_dp_bridge_mode_set(stru
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static void cdn_hdp_bridge_enable(struct drm_bridge *bridge)
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{
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+ struct cdns_mhdp_device *mhdp = bridge->driver_private;
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+ int ret;
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+
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+ /* Link trainning */
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+ ret = cdns_mhdp_train_link(mhdp);
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+ if (ret) {
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+ DRM_DEV_ERROR(mhdp->dev, "Failed link train %d\n", ret);
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+ return;
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+ }
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+
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+ ret = cdns_mhdp_set_video_status(mhdp, CONTROL_VIDEO_VALID);
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+ if (ret) {
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+ DRM_DEV_ERROR(mhdp->dev, "Failed to valid video %d\n", ret);
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+ return;
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+ }
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}
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static void cdn_hdp_bridge_disable(struct drm_bridge *bridge)
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@@ -366,11 +368,7 @@ static void hotplug_work_func(struct wor
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drm_helper_hpd_irq_event(connector->dev);
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if (connector->status == connector_status_connected) {
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- /* reset video mode after cable plugin */
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- mutex_lock(&mhdp->lock);
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- cdns_dp_mode_set(mhdp);
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- mutex_unlock(&mhdp->lock);
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-
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+ /* Cable connedted */
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DRM_INFO("HDMI/DP Cable Plug In\n");
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enable_irq(mhdp->irq[IRQ_OUT]);
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} else if (connector->status == connector_status_disconnected) {
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