From: Abhinav Kumar <quic_abhin...@quicinc.com>
Introduce the mst_streams for each DP controller to specify the number
of supported MST streams. On most platforms, the supported MST streams
number is 2 or 4. For platforms that do not support MST, define
DEFAULT_STREAM_COUNT as 1. Also exist platform that DP0 supports 4
streams while DP1 support 2 streams.
Signed-off-by: Abhinav Kumar <quic_abhin...@quicinc.com>
Signed-off-by: Yongxing Mou <quic_yong...@quicinc.com>
---
drivers/gpu/drm/msm/dp/dp_display.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c
b/drivers/gpu/drm/msm/dp/dp_display.c
index
7ed4034c89605596c874a6bf9a5a19586d6c13fb..4e0213cae4aafb468681db27b3c3fef28d44b2c0
100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -34,6 +34,7 @@ module_param(psr_enabled, bool, 0);
MODULE_PARM_DESC(psr_enabled, "enable PSR for eDP and DP displays");
#define HPD_STRING_SIZE 30
+#define DEFAULT_STREAM_COUNT 1
enum {
ISR_DISCONNECTED,
@@ -83,6 +84,7 @@ struct msm_dp_display_private {
bool core_initialized;
bool phy_initialized;
bool audio_supported;
+ bool mst_supported;
struct drm_device *drm_dev;
@@ -110,12 +112,14 @@ struct msm_dp_display_private {
bool wide_bus_supported;
struct msm_dp_audio *audio;
+ int max_stream;
};
struct msm_dp_desc {
phys_addr_t io_start;
unsigned int id;
bool wide_bus_supported;
+ int mst_streams;
};
static const struct msm_dp_desc msm_dp_desc_sa8775p[] = {
@@ -1330,6 +1334,14 @@ static int msm_dp_display_probe(struct platform_device
*pdev)
dp->msm_dp_display.is_edp =
(dp->msm_dp_display.connector_type == DRM_MODE_CONNECTOR_eDP);
+ dp->max_stream = DEFAULT_STREAM_COUNT;
+ dp->mst_supported = FALSE;
+
+ if (desc->mst_streams > DEFAULT_STREAM_COUNT) {
+ dp->max_stream = desc->mst_streams;
+ dp->mst_supported = TRUE;
+ }
+
rc = msm_dp_init_sub_modules(dp);
if (rc) {
DRM_ERROR("init sub module failed\n");
--
2.34.1
