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drm/rockchip: dw-dp: don't send sdp when disable video stream

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When the display mode change from HDR to SDR but the vsc sdp and
hdr infoframe still send after exit HDR mode, the picture quality
will be abnormal. It need disable sdp when disable video stream.

Fixes: 0ac9316547 ("Revert "drm/rockchip: dw-dp: reset dp controller status"")

Change-Id: I060e8d8e6c9765b71831d08060a1d3ed097bbefa
Signed-off-by: Zhang Yubing <yubing.zhang@rock-chips.com>
This commit is contained in:
Zhang Yubing
2025-09-04 19:20:48 +08:00
committed by Tao Huang
parent 9e1626c671
commit 8cb70d4022
1 changed files with 8 additions and 0 deletions
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8
drivers/gpu/drm/rockchip/dw-dp.c
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@@ -3857,6 +3857,12 @@ static void dw_dp_link_disable(struct dw_dp *dp)
link->train.channel_equalized = false;
}
static void dw_dp_sdp_disalbe(struct dw_dp *dp, int stream_id)
{
regmap_write(dp->regmap, DPTX_SDP_VERTICAL_CTRL_N(stream_id), 0);
regmap_write(dp->regmap, DPTX_SDP_HORIZONTAL_CTRL_N(stream_id), 0);
}
static void dw_dp_mst_encoder_atomic_disable(struct drm_encoder *encoder,
struct drm_atomic_state *state)
{
@@ -3909,6 +3915,7 @@ static void dw_dp_mst_encoder_atomic_disable(struct drm_encoder *encoder,
drm_dp_send_power_updown_phy(&dp->mst_mgr, mst_conn->port, false);
dw_dp_video_disable(dp, mst_enc->stream_id);
dw_dp_sdp_disalbe(dp, mst_enc->stream_id);
if (!dp->active_mst_links)
dw_dp_link_disable(dp);
@@ -4490,6 +4497,7 @@ static void dw_dp_bridge_atomic_disable(struct drm_bridge *bridge,
dw_dp_enable_vop_gate(dp, bridge->encoder->crtc, dp->id, false);
dw_dp_hdcp_disable(dp);
dw_dp_video_disable(dp, 0);
dw_dp_sdp_disalbe(dp, 0);
dw_dp_link_disable(dp);
bitmap_zero(dp->sdp_reg_bank, SDP_REG_BANK_SIZE);