dp_display_disable() handles special case of when monitor is
disconnected from the dongle while the dongle stays connected
thereby needing a separate function dp_ctrl_off_link_stream()
for this. However with a slight rework this can still be handled
by keeping common paths same for regular and special case.
Signed-off-by: Abhinav Kumar <quic_abhin...@quicinc.com>
---
drivers/gpu/drm/msm/dp/dp_ctrl.c | 29 +++++++++++++++--------------
drivers/gpu/drm/msm/dp/dp_ctrl.h | 4 ++++
drivers/gpu/drm/msm/dp/dp_display.c | 25 ++++++++++++-------------
3 files changed, 31 insertions(+), 27 deletions(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index
763bd58c24d29d49caafb76eab32b493e1618e7b..9e08996be0cb969cb96d9a3019c445ab4dfc92ef
100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -2042,30 +2042,31 @@ int msm_dp_ctrl_on_stream(struct msm_dp_ctrl
*msm_dp_ctrl)
return ret;
}
-void msm_dp_ctrl_off_link_stream(struct msm_dp_ctrl *msm_dp_ctrl)
+void msm_dp_ctrl_clear_vsc_sdp_pkt(struct msm_dp_ctrl *msm_dp_ctrl)
{
struct msm_dp_ctrl_private *ctrl;
- struct phy *phy;
ctrl = container_of(msm_dp_ctrl, struct msm_dp_ctrl_private,
msm_dp_ctrl);
- phy = ctrl->phy;
-
msm_dp_catalog_panel_disable_vsc_sdp(ctrl->catalog);
+}
- /* set dongle to D3 (power off) mode */
- msm_dp_link_psm_config(ctrl->link, &ctrl->panel->link_info, true);
+void msm_dp_ctrl_psm_config(struct msm_dp_ctrl *msm_dp_ctrl)
+{
+ struct msm_dp_ctrl_private *ctrl;
- msm_dp_catalog_ctrl_mainlink_ctrl(ctrl->catalog, false);
+ ctrl = container_of(msm_dp_ctrl, struct msm_dp_ctrl_private,
msm_dp_ctrl);
- if (ctrl->stream_clks_on) {
- clk_disable_unprepare(ctrl->pixel_clk);
- ctrl->stream_clks_on = false;
- }
+ /* set dongle to D3 (power off) mode */
+ msm_dp_link_psm_config(ctrl->link, &ctrl->panel->link_info, true);
+}
- dev_pm_opp_set_rate(ctrl->dev, 0);
- msm_dp_ctrl_link_clk_disable(&ctrl->msm_dp_ctrl);
+void msm_dp_ctrl_reinit_phy(struct msm_dp_ctrl *msm_dp_ctrl)
+{
+ struct msm_dp_ctrl_private *ctrl;
+ struct phy *phy;
- phy_power_off(phy);
+ ctrl = container_of(msm_dp_ctrl, struct msm_dp_ctrl_private,
msm_dp_ctrl);
+ phy = ctrl->phy;
/* aux channel down, reinit phy */
phy_exit(phy);
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.h b/drivers/gpu/drm/msm/dp/dp_ctrl.h
index
42745c912adbad7221c78f5cecefa730bfda1e75..0f58b63c5c7c5aab43c0db2a697ba491959b79d2
100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.h
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.h
@@ -42,4 +42,8 @@ void msm_dp_ctrl_config_psr(struct msm_dp_ctrl *msm_dp_ctrl);
int msm_dp_ctrl_core_clk_enable(struct msm_dp_ctrl *msm_dp_ctrl);
void msm_dp_ctrl_core_clk_disable(struct msm_dp_ctrl *msm_dp_ctrl);
+void msm_dp_ctrl_clear_vsc_sdp_pkt(struct msm_dp_ctrl *msm_dp_ctrl);
+void msm_dp_ctrl_psm_config(struct msm_dp_ctrl *msm_dp_ctrl);
+void msm_dp_ctrl_reinit_phy(struct msm_dp_ctrl *msm_dp_ctrl);
+
#endif /* _DP_CTRL_H_ */
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c
b/drivers/gpu/drm/msm/dp/dp_display.c
index
434380b442ec84c12c240dab6538ccdf31963cea..bbce8ca09ff70059458231982f002e1f22d2c3ab
100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -905,20 +905,19 @@ static int msm_dp_display_disable(struct
msm_dp_display_private *dp)
if (!msm_dp_display->power_on)
return 0;
- if (dp->link->sink_count == 0) {
- /*
- * irq_hpd with sink_count = 0
- * hdmi unplugged out of dongle
- */
- msm_dp_ctrl_off_link_stream(dp->ctrl);
- } else {
- /*
- * unplugged interrupt
- * dongle unplugged out of DUT
- */
- msm_dp_ctrl_off(dp->ctrl);
+ msm_dp_ctrl_clear_vsc_sdp_pkt(dp->ctrl);
+
+ /* dongle is still connected but sinks are disconnected */
+ if (dp->link->sink_count == 0)
+ msm_dp_ctrl_psm_config(dp->ctrl);
+
+ msm_dp_ctrl_off(dp->ctrl);
+
+ /* re-init the PHY so that we can listen to Dongle disconnect */
+ if (dp->link->sink_count == 0)
+ msm_dp_ctrl_reinit_phy(dp->ctrl);
+ else
msm_dp_display_host_phy_exit(dp);
- }
msm_dp_display->power_on = false;
--
2.34.1
