On Thu, Jan 21, 2021 at 8:45 AM Thomas Zimmermann tzimmermann@suse.de wrote:
Hi Noralf,
glad to hear from you! Welcome back!
Am 20.01.21 um 18:42 schrieb Daniel Vetter:
On Wed, Jan 20, 2021 at 6:10 PM Noralf Trønnes noralf@tronnes.org wrote:
Add a connector type for USB connected display panels.
Signed-off-by: Noralf Trønnes noralf@tronnes.org
include/uapi/drm/drm_mode.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h index fed66a03c7ae..33024cc5d26e 100644 --- a/include/uapi/drm/drm_mode.h +++ b/include/uapi/drm/drm_mode.h @@ -367,6 +367,7 @@ enum drm_mode_subconnector { #define DRM_MODE_CONNECTOR_DPI 17 #define DRM_MODE_CONNECTOR_WRITEBACK 18 #define DRM_MODE_CONNECTOR_SPI 19 +#define DRM_MODE_CONNECTOR_USB 20
I would not call it USB. I could imagine that at some point a generic USB protocol could serve simple displays (i.e. in the sense of USB HID or data or imaging). (Maybe Thunderbold already counts.) Anyway, USB should be reserved for this case.
We end up calling those DisplayPort, since that's what's being transported over thunderbolt or usb-C. So the usb connector would be called usb-C. I think the reason we don't do fancy connector names is that adding them is a bit a pain. Plus drm/i915 specifically has some very quirky connector enumerating that doesn't match much with reality unfortunately anyway :-/ -Daniel
Best regards Thomas
Beware, new connector types have in the past resulted in userspace burning&crashing. Maybe it's become better ...
Acked-by: Daniel Vetter daniel.vetter@ffwll.ch
/**
- struct drm_mode_get_connector - Get connector metadata.
-- 2.23.0
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-- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Felix Imendörffer