[PATCH 25/45] drm/msm/dp: move link related operations to dp_display_unprepare()

From: Abhinav Kumar
Date: Thu Dec 05 2024 - 23:37:31 EST


Move the link related operations to dp_display_unprepare() and keep
only stream related operations in dp_display_disable().

Make dp_display_unprepare() available to other clients such as DP MST.

Signed-off-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
---
drivers/gpu/drm/msm/dp/dp_display.c | 31 ++++++++++++++++---------------
drivers/gpu/drm/msm/dp/dp_display.h | 2 ++
2 files changed, 18 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index e169cd22db960c0c30707ddbe6a79999dc2a273d..d5b8fd1d4d736ffa7929b9798601dcef0dea5211 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -936,20 +936,8 @@ static int msm_dp_display_disable(struct msm_dp_display_private *dp,

msm_dp_ctrl_clear_vsc_sdp_pkt(dp->ctrl, msm_dp_panel);

- /* dongle is still connected but sinks are disconnected */
- if (dp->link->sink_count == 0)
- msm_dp_ctrl_psm_config(dp->ctrl);
-
msm_dp_ctrl_stream_clk_off(dp->ctrl, msm_dp_panel);

- msm_dp_ctrl_off_link(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;

drm_dbg_dp(dp->drm_dev, "sink count: %d\n", dp->link->sink_count);
@@ -1678,15 +1666,28 @@ void msm_dp_display_atomic_disable(struct msm_dp *msm_dp)
msm_dp_display_disable_helper(msm_dp, msm_dp_display->panel);
}

-static void msm_dp_display_unprepare(struct msm_dp_display_private *msm_dp_display_priv)
+void msm_dp_display_unprepare(struct msm_dp *msm_dp)
{
- struct msm_dp *msm_dp = &msm_dp_display_priv->msm_dp_display;
+ struct msm_dp_display_private *msm_dp_display;

+ msm_dp_display = container_of(msm_dp, struct msm_dp_display_private, msm_dp_display);
if (!msm_dp->prepared) {
drm_dbg_dp(msm_dp->drm_dev, "Link already setup, return\n");
return;
}

+ /* dongle is still connected but sinks are disconnected */
+ if (msm_dp_display->link->sink_count == 0)
+ msm_dp_ctrl_psm_config(msm_dp_display->ctrl);
+
+ msm_dp_ctrl_off_link(msm_dp_display->ctrl);
+
+ /* re-init the PHY so that we can listen to Dongle disconnect */
+ if (msm_dp_display->link->sink_count == 0)
+ msm_dp_ctrl_reinit_phy(msm_dp_display->ctrl);
+ else
+ msm_dp_display_host_phy_exit(msm_dp_display);
+
pm_runtime_put_sync(&msm_dp->pdev->dev);

msm_dp->prepared = false;
@@ -1732,7 +1733,7 @@ void msm_dp_display_atomic_post_disable(struct msm_dp *msm_dp)

msm_dp_display_atomic_post_disable_helper(msm_dp, msm_dp_display->panel);

- msm_dp_display_unprepare(msm_dp_display);
+ msm_dp_display_unprepare(msm_dp);
}

void msm_dp_display_mode_set_helper(struct msm_dp *msm_dp,
diff --git a/drivers/gpu/drm/msm/dp/dp_display.h b/drivers/gpu/drm/msm/dp/dp_display.h
index 2b23f2bf7535d3fd513d40a8411a1903fcd560b0..82eb1c6ed1467b21742bda8eaae9c51d3207e997 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.h
+++ b/drivers/gpu/drm/msm/dp/dp_display.h
@@ -65,4 +65,6 @@ void msm_dp_display_mode_set_helper(struct msm_dp *msm_dp,
void msm_dp_display_atomic_post_disable_helper(struct msm_dp *msm_dp,
struct msm_dp_panel *msm_dp_panel);

+void msm_dp_display_unprepare(struct msm_dp *dp);
+
#endif /* _DP_DISPLAY_H_ */

--
2.34.1