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Differential D35984 Diff 108695 graphics/drm-fbsd13-kmod/files/patch-drm_fb_helper_freebsd.c

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graphics/drm-fbsd13-kmod/files/patch-drm_fb_helper_freebsd.c

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diff -ru drivers/gpu/drm/drm_fb_helper_freebsd.c drivers/gpu/drm/drm_fb_helper_freebsd.c
--- drivers/gpu/drm/drm_fb_helper_freebsd.c 2022-04-26 02:24:02.000000000 -0600
+++ drivers/gpu/drm/drm_fb_helper_freebsd.c 2022-07-02 13:57:55.679647000 -0600
@@ -48,7 +48,9 @@
int
fb_get_options(const char *connector_name, char **option)
{
+ int rotation;
char tunable[64];
+ char (*optbuf)[sizeof(",rotate=360")];
/*
* A user may use loader tunables to set a specific mode for the
@@ -62,15 +64,34 @@
* Example of a mode applied to all connectors not having a
* connector-specific mode:
* kern.vt.fb.default_mode="640x480"
+ *
+ * Example of a mode option applied to all connectors not having a
+ * connector-specific mode, where the angle is the number of degrees
+ * counter-clockwise to rotate the display:
+ * kern.vt.fb.default_mode=",rotate=270"
*/
snprintf(tunable, sizeof(tunable), "kern.vt.fb.modes.%s",
connector_name);
DRM_INFO("Connector %s: get mode from tunables:\n", connector_name);
DRM_INFO(" - %s\n", tunable);
DRM_INFO(" - kern.vt.fb.default_mode\n");
+ DRM_INFO(" - screen.rotate\n");
*option = kern_getenv(tunable);
if (*option == NULL)
- *option = kern_getenv("kern.vt.fb.default_mode");
+ *option = kern_getenv("kern.vt.fb.default_mode");
+ if (*option == NULL) {
+ if (getenv_int("screen.rotate", &rotation) != 0) {
+ switch (rotation) {
+ case 90:
+ case 270:
+ rotation = (rotation + 180) % 360;
+ case 180:
+ optbuf = malloc(sizeof(*optbuf), DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
+ snprintf(*optbuf, sizeof(*optbuf), ",rotate=%d", rotation);
+ *option = *optbuf;
+ }
+ }
+ }
return (*option != NULL ? 0 : -ENOENT);
}