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drm/msm/dp: split dp_ctrl_off() into stream and link parts

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Split dp_ctrl_off() into stream and link parts so that for MST
cases we can control the link and pixel parts separately.

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/742746/
Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-11-f7779fce10f4@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
This commit is contained in:
Abhinav Kumar 2026-07-28 18:21:40 +08:00 committed by Dmitry Baryshkov
parent 2f0e61b6c5
commit a57a819262
3 changed files with 12 additions and 10 deletions
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10
drivers/gpu/drm/msm/dp/dp_ctrl.c
View File

@ -2215,7 +2215,7 @@ static int msm_dp_ctrl_on_pixel_clk(struct msm_dp_ctrl_private *ctrl, unsigned l
return ret;
}
static void msm_dp_ctrl_off_pixel_clk(struct msm_dp_ctrl *msm_dp_ctrl)
void msm_dp_ctrl_off_pixel_clk(struct msm_dp_ctrl *msm_dp_ctrl)
{
struct msm_dp_ctrl_private *ctrl;
@ -2244,7 +2244,8 @@ static int msm_dp_ctrl_process_phy_test_request(struct msm_dp_ctrl_private *ctrl
* running. Add the global reset just before disabling the
* link clocks and core clocks.
*/
msm_dp_ctrl_off(&ctrl->msm_dp_ctrl, panel);
msm_dp_ctrl_off_pixel_clk(&ctrl->msm_dp_ctrl);
msm_dp_ctrl_off_link(&ctrl->msm_dp_ctrl, panel);
ret = msm_dp_ctrl_on_link(&ctrl->msm_dp_ctrl, panel);
if (ret) {
@ -2640,8 +2641,8 @@ void msm_dp_ctrl_reinit_phy(struct msm_dp_ctrl *msm_dp_ctrl)
phy_init(phy);
}
void msm_dp_ctrl_off(struct msm_dp_ctrl *msm_dp_ctrl,
struct msm_dp_panel *panel)
void msm_dp_ctrl_off_link(struct msm_dp_ctrl *msm_dp_ctrl,
struct msm_dp_panel *panel)
{
struct msm_dp_ctrl_private *ctrl;
struct phy *phy;
@ -2655,7 +2656,6 @@ void msm_dp_ctrl_off(struct msm_dp_ctrl *msm_dp_ctrl,
msm_dp_ctrl_reset(&ctrl->msm_dp_ctrl, panel);
msm_dp_ctrl_off_pixel_clk(msm_dp_ctrl);
dev_pm_opp_set_rate(ctrl->dev, 0);
msm_dp_ctrl_link_clk_disable(&ctrl->msm_dp_ctrl);

5
drivers/gpu/drm/msm/dp/dp_ctrl.h
View File

@ -22,8 +22,9 @@ int msm_dp_ctrl_on_stream(struct msm_dp_ctrl *msm_dp_ctrl, struct msm_dp_panel *
int msm_dp_ctrl_prepare_stream_on(struct msm_dp_ctrl *msm_dp_ctrl,
struct msm_dp_panel *panel,
bool force_link_train);
void msm_dp_ctrl_off(struct msm_dp_ctrl *msm_dp_ctrl,
struct msm_dp_panel *panel);
void msm_dp_ctrl_off_link(struct msm_dp_ctrl *msm_dp_ctrl,
struct msm_dp_panel *panel);
void msm_dp_ctrl_off_pixel_clk(struct msm_dp_ctrl *msm_dp_ctrl);
void msm_dp_ctrl_push_idle(struct msm_dp_ctrl *msm_dp_ctrl);
irqreturn_t msm_dp_ctrl_isr(struct msm_dp_ctrl *msm_dp_ctrl,
struct msm_dp_panel *panel);

7
drivers/gpu/drm/msm/dp/dp_display.c
View File

@ -727,15 +727,16 @@ static int msm_dp_display_disable(struct msm_dp_display_private *dp)
/* set dongle to D3 (power off) mode */
msm_dp_link_psm_config(dp->link, &dp->panel->link_info, true);
msm_dp_ctrl_off(dp->ctrl, dp->panel);
/* re-init the PHY so that we can listen to Dongle disconnect */
msm_dp_ctrl_off_pixel_clk(dp->ctrl);
msm_dp_ctrl_off_link(dp->ctrl, dp->panel);
msm_dp_ctrl_reinit_phy(dp->ctrl);
} else {
/*
* unplugged interrupt
* dongle unplugged out of DUT
*/
msm_dp_ctrl_off(dp->ctrl, dp->panel);
msm_dp_ctrl_off_pixel_clk(dp->ctrl);
msm_dp_ctrl_off_link(dp->ctrl, dp->panel);
msm_dp_display_host_phy_exit(dp);
}