diff options
Diffstat (limited to 'drivers/gpu/drm/drm_modes.c')
| -rw-r--r-- | drivers/gpu/drm/drm_modes.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index 6d8b941c8200..9731aeba40a6 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -615,6 +615,46 @@ void drm_display_mode_from_videomode(const struct videomode *vm, } EXPORT_SYMBOL_GPL(drm_display_mode_from_videomode); +/** + * drm_display_mode_to_videomode - fill in @vm using @dmode, + * @dmode: drm_display_mode structure to use as source + * @vm: videomode structure to use as destination + * + * Fills out @vm using the display mode specified in @dmode. + */ +void drm_display_mode_to_videomode(const struct drm_display_mode *dmode, + struct videomode *vm) +{ + vm->hactive = dmode->hdisplay; + vm->hfront_porch = dmode->hsync_start - dmode->hdisplay; + vm->hsync_len = dmode->hsync_end - dmode->hsync_start; + vm->hback_porch = dmode->htotal - dmode->hsync_end; + + vm->vactive = dmode->vdisplay; + vm->vfront_porch = dmode->vsync_start - dmode->vdisplay; + vm->vsync_len = dmode->vsync_end - dmode->vsync_start; + vm->vback_porch = dmode->vtotal - dmode->vsync_end; + + vm->pixelclock = dmode->clock * 1000; + + vm->flags = 0; + if (dmode->flags & DRM_MODE_FLAG_PHSYNC) + vm->flags |= DISPLAY_FLAGS_HSYNC_HIGH; + else if (dmode->flags & DRM_MODE_FLAG_NHSYNC) + vm->flags |= DISPLAY_FLAGS_HSYNC_LOW; + if (dmode->flags & DRM_MODE_FLAG_PVSYNC) + vm->flags |= DISPLAY_FLAGS_VSYNC_HIGH; + else if (dmode->flags & DRM_MODE_FLAG_NVSYNC) + vm->flags |= DISPLAY_FLAGS_VSYNC_LOW; + if (dmode->flags & DRM_MODE_FLAG_INTERLACE) + vm->flags |= DISPLAY_FLAGS_INTERLACED; + if (dmode->flags & DRM_MODE_FLAG_DBLSCAN) + vm->flags |= DISPLAY_FLAGS_DOUBLESCAN; + if (dmode->flags & DRM_MODE_FLAG_DBLCLK) + vm->flags |= DISPLAY_FLAGS_DOUBLECLK; +} +EXPORT_SYMBOL_GPL(drm_display_mode_to_videomode); + #ifdef CONFIG_OF /** * of_get_drm_display_mode - get a drm_display_mode from devicetree |