On 2024/12/6 16:52, Dmitry Baryshkov wrote:
On Thu, Dec 05, 2024 at 08:31:36PM -0800, Abhinav Kumar wrote:
Add a helper to check whether a dp_panel is mst capable.
Signed-off-by: Abhinav Kumar <quic_abhin...@quicinc.com>
---
drivers/gpu/drm/msm/dp/dp_aux.h | 1 +
drivers/gpu/drm/msm/dp/dp_panel.c | 14 ++++++++++++++
drivers/gpu/drm/msm/dp/dp_panel.h | 1 +
3 files changed, 16 insertions(+)
diff --git a/drivers/gpu/drm/msm/dp/dp_aux.h b/drivers/gpu/drm/msm/dp/dp_aux.h
index
39c5b4c8596ab28d822493a6b4d479f5f786cdee..cb97a73cdd6ea74b612053bec578247a42214f23
100644
--- a/drivers/gpu/drm/msm/dp/dp_aux.h
+++ b/drivers/gpu/drm/msm/dp/dp_aux.h
@@ -8,6 +8,7 @@
#include "dp_catalog.h"
#include <drm/display/drm_dp_helper.h>
+#include <drm/display/drm_dp_mst_helper.h>
int msm_dp_aux_register(struct drm_dp_aux *msm_dp_aux);
void msm_dp_aux_unregister(struct drm_dp_aux *msm_dp_aux);
diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c
b/drivers/gpu/drm/msm/dp/dp_panel.c
index
d277e9b2cbc03688976b6aa481ee724b186bab51..172de804dec445cb08ad8e3f058407f483cd6684
100644
--- a/drivers/gpu/drm/msm/dp/dp_panel.c
+++ b/drivers/gpu/drm/msm/dp/dp_panel.c
@@ -108,6 +108,20 @@ static u32 msm_dp_panel_get_supported_bpp(struct
msm_dp_panel *msm_dp_panel,
return min_supported_bpp;
}
+bool msm_dp_panel_read_mst_cap(struct msm_dp_panel *msm_dp_panel)
+{
+ struct msm_dp_panel_private *panel;
+
+ if (!msm_dp_panel) {
+ DRM_ERROR("invalid input\n");
+ return 0;
+ }
+
+ panel = container_of(msm_dp_panel, struct msm_dp_panel_private,
msm_dp_panel);
+
+ return drm_dp_read_mst_cap(panel->aux, msm_dp_panel->dpcd);
So, it's a one-line wrapper. Do we actually need it?
It beacuse the point of aux is in msm_dp_panel_private, so if we want to
call drm_dp_read_mst_cap in other file, we need this wrapper.
+}
+
int msm_dp_panel_read_link_caps(struct msm_dp_panel *msm_dp_panel,
struct drm_connector *connector)
{
diff --git a/drivers/gpu/drm/msm/dp/dp_panel.h
b/drivers/gpu/drm/msm/dp/dp_panel.h
index
7a38655c443af597c84fb78c6702b2a3ef9822ed..363b416e4cbe290f9c0e6171d6c0c5170f9fea62
100644
--- a/drivers/gpu/drm/msm/dp/dp_panel.h
+++ b/drivers/gpu/drm/msm/dp/dp_panel.h
@@ -67,6 +67,7 @@ int msm_dp_panel_get_modes(struct msm_dp_panel *msm_dp_panel,
struct drm_connector *connector);
void msm_dp_panel_handle_sink_request(struct msm_dp_panel *msm_dp_panel);
void msm_dp_panel_tpg_config(struct msm_dp_panel *msm_dp_panel, bool enable);
+bool msm_dp_panel_read_mst_cap(struct msm_dp_panel *dp_panel);
/**
* is_link_rate_valid() - validates the link rate
--
2.34.1
