diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index eb2322175624..9803da5fd6b3 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -14082,10 +14082,37 @@ static void intel_atomic_state_free(struct drm_atomic_state *state) kfree(state); } +static enum drm_mode_status +intel_mode_valid(struct drm_device *dev, + const struct drm_display_mode *mode) +{ + if (mode->vscan > 1) + return MODE_NO_VSCAN; + + if (mode->flags & DRM_MODE_FLAG_DBLSCAN) + return MODE_NO_DBLESCAN; + + if (mode->flags & DRM_MODE_FLAG_HSKEW) + return MODE_H_ILLEGAL; + + if (mode->flags & (DRM_MODE_FLAG_CSYNC | + DRM_MODE_FLAG_NCSYNC | + DRM_MODE_FLAG_PCSYNC)) + return MODE_HSYNC; + + if (mode->flags & (DRM_MODE_FLAG_BCAST | + DRM_MODE_FLAG_PIXMUX | + DRM_MODE_FLAG_CLKDIV2)) + return MODE_BAD; + + return MODE_OK; +} + static const struct drm_mode_config_funcs intel_mode_funcs = { .fb_create = intel_user_framebuffer_create, .get_format_info = intel_get_format_info, .output_poll_changed = intel_fbdev_output_poll_changed, + .mode_valid = intel_mode_valid, .atomic_check = intel_atomic_check, .atomic_commit = intel_atomic_commit, .atomic_state_alloc = intel_atomic_state_alloc, |