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backend/drm: add support for panel orientation

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Expose the panel orientation with wlr_drm_connector_get_panel_orientation.
Leave it to the compositor to consume this information and configure the
output accordingly.

Closes: https://github.com/swaywm/wlroots/issues/1581
This commit is contained in:
Simon Ser 2021-09-19 16:36:23 +02:00 committed by Simon Zeni
parent 0c5ff5efab
commit 2e12de96ca
4 changed files with 44 additions and 0 deletions
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31
backend/drm/drm.c
View file

@ -977,6 +977,37 @@ uint32_t wlr_drm_connector_get_id(struct wlr_output *output) {
return conn->id; return conn->id;
} }
enum wl_output_transform wlr_drm_connector_get_panel_orientation(
struct wlr_output *output) {
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
if (conn->props.panel_orientation) {
return WL_OUTPUT_TRANSFORM_NORMAL;
}
char *orientation = get_drm_prop_enum(conn->backend->fd, conn->id,
conn->props.panel_orientation);
if (orientation == NULL) {
return WL_OUTPUT_TRANSFORM_NORMAL;
}
enum wl_output_transform tr;
if (strcmp(orientation, "Normal") == 0) {
tr = WL_OUTPUT_TRANSFORM_NORMAL;
} else if (strcmp(orientation, "Left Side Up") == 0) {
tr = WL_OUTPUT_TRANSFORM_90;
} else if (strcmp(orientation, "Upside Down") == 0) {
tr = WL_OUTPUT_TRANSFORM_180;
} else if (strcmp(orientation, "Right Side Up") == 0) {
tr = WL_OUTPUT_TRANSFORM_270;
} else {
wlr_drm_conn_log(conn, WLR_ERROR, "Unknown panel orientation: %s", orientation);
tr = WL_OUTPUT_TRANSFORM_NORMAL;
}
free(orientation);
return tr;
}
static const int32_t subpixel_map[] = { static const int32_t subpixel_map[] = {
[DRM_MODE_SUBPIXEL_UNKNOWN] = WL_OUTPUT_SUBPIXEL_UNKNOWN, [DRM_MODE_SUBPIXEL_UNKNOWN] = WL_OUTPUT_SUBPIXEL_UNKNOWN,
[DRM_MODE_SUBPIXEL_HORIZONTAL_RGB] = WL_OUTPUT_SUBPIXEL_HORIZONTAL_RGB, [DRM_MODE_SUBPIXEL_HORIZONTAL_RGB] = WL_OUTPUT_SUBPIXEL_HORIZONTAL_RGB,

1
backend/drm/properties.c
View file

@ -26,6 +26,7 @@ static const struct prop_info connector_info[] = {
{ "PATH", INDEX(path) }, { "PATH", INDEX(path) },
{ "link-status", INDEX(link_status) }, { "link-status", INDEX(link_status) },
{ "non-desktop", INDEX(non_desktop) }, { "non-desktop", INDEX(non_desktop) },
{ "panel orientation", INDEX(panel_orientation) },
{ "subconnector", INDEX(subconnector) }, { "subconnector", INDEX(subconnector) },
{ "vrr_capable", INDEX(vrr_capable) }, { "vrr_capable", INDEX(vrr_capable) },
#undef INDEX #undef INDEX

1
include/backend/drm/properties.h
View file

@ -19,6 +19,7 @@ union wlr_drm_connector_props {
uint32_t vrr_capable; // not guaranteed to exist uint32_t vrr_capable; // not guaranteed to exist
uint32_t subconnector; // not guaranteed to exist uint32_t subconnector; // not guaranteed to exist
uint32_t non_desktop; uint32_t non_desktop;
uint32_t panel_orientation; // not guaranteed to exist
// atomic-modesetting only // atomic-modesetting only

11
include/wlr/backend/drm.h
View file

@ -61,4 +61,15 @@ typedef struct _drmModeModeInfo drmModeModeInfo;
struct wlr_output_mode *wlr_drm_connector_add_mode(struct wlr_output *output, struct wlr_output_mode *wlr_drm_connector_add_mode(struct wlr_output *output,
const drmModeModeInfo *mode); const drmModeModeInfo *mode);
/**
* Get the connector's panel orientation.
*
* On some devices the panel is mounted in the casing in such a way that the
* top side of the panel does not match with the top side of the device. This
* function returns the output transform which needs to be applied to compensate
* for this.
*/
enum wl_output_transform wlr_drm_connector_get_panel_orientation(
struct wlr_output *output);
#endif #endif