Re: [PATCH 3/4] drm/uapi: document the USB subconnector type

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On 02/08/2023 21:55, Laurent Pinchart wrote:
Hi Dmitry,

Thank you for the patch.

On Sat, Jul 29, 2023 at 03:49:12AM +0300, Dmitry Baryshkov wrote:
To properly define the USB-C DP altmode connectors, add the USB
subconnector type.

Suggested-by: Simon Ser <contact@xxxxxxxxxxx>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
  drivers/gpu/drm/drm_connector.c | 1 +
  include/uapi/drm/drm_mode.h     | 1 +
  2 files changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index a6066e4a5e9a..9e96b038f5d0 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -1050,6 +1050,7 @@ static const struct drm_prop_enum_list drm_dp_subconnector_enum_list[] = {
  	{ DRM_MODE_SUBCONNECTOR_DisplayPort, "DP"        }, /* DP */
  	{ DRM_MODE_SUBCONNECTOR_Wireless,    "Wireless"  }, /* DP */
  	{ DRM_MODE_SUBCONNECTOR_Native,	     "Native"    }, /* DP */
+	{ DRM_MODE_SUBCONNECTOR_USB,	     "USB"       }, /* DP */

Should this be DRM_MODE_SUBCONNECTOR_USB_C and "USB-C", in case we get
another USB type later ?

Hmm, which id should I use for micro-USB then? (consider anx7808, SlimPort). I thought about using DRM_MODE_SUBCONNECTOR_USB for both of them. But maybe I should add another subtype for SlimPort.


  };
DRM_ENUM_NAME_FN(drm_get_dp_subconnector_name,
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index 92d96a2b6763..0f74918b011c 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -398,6 +398,7 @@ enum drm_mode_subconnector {
  	DRM_MODE_SUBCONNECTOR_HDMIA       = 11, /*            DP */
  	DRM_MODE_SUBCONNECTOR_Native      = 15, /*            DP */
  	DRM_MODE_SUBCONNECTOR_Wireless    = 18, /*            DP */
+	DRM_MODE_SUBCONNECTOR_USB         = 20, /*            DP */
  };
#define DRM_MODE_CONNECTOR_Unknown 0


--
With best wishes
Dmitry




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