Changeset 107707 in vbox

Timestamp:

Jan 13, 2025 3:15:14 PM (7 days ago)

Author:

vboxsync

Message:

Additions: Linux: vboxvideo: Restored .gamma_set callback which was removed in r88784, bugref:4567.

This callback is still needed for legacy DRM stack in order to make DRM_IOCTL_MODE_SETGAMMA ioctl
work when triggered from libdrm. Without it, guest graphics can be freezed with the following
messages in system log:

Page flip failed: drmModeCrtcSetGamma on CRTC XX failed: Function not implemented

File:

• trunk/src/VBox/Additions/linux/drm/vbox_mode.c (modified) (2 diffs)

trunk/src/VBox/Additions/linux/drm/vbox_mode.c

@@ -360 +360 @@
 }
 
+#if RTLNX_VER_MIN(4,8,0)
+static int vbox_crtc_gamma_set(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
+                               uint32_t size, struct drm_modeset_acquire_ctx *ctx)
+{
+    return 0;
+}
+#elif RTLNX_VER_MIN(2,6,29) /* RTLNX_VER_MIN <= 4.8.0 */
+static void vbox_crtc_gamma_set(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
+                               uint32_t size, struct drm_modeset_acquire_ctx *ctx)
+{
+}
+#endif /* RTLNX_VER_MIN >= 4.8.0 */
+
 static void vbox_crtc_destroy(struct drm_crtc *crtc)
 {
@@ -371 +384 @@
     .reset = vbox_crtc_reset,
     .set_config = drm_crtc_helper_set_config,
-    /* .gamma_set = vbox_crtc_gamma_set, */
+#if RTLNX_VER_MIN(2,6,29)
+    .gamma_set = vbox_crtc_gamma_set,
+#endif
     .page_flip = vbox_crtc_page_flip,
     .destroy = vbox_crtc_destroy,