diff options
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/arc/arcpgu_crtc.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/gpu/drm/arc/arcpgu_crtc.c b/drivers/gpu/drm/arc/arcpgu_crtc.c index dfaddbb7da0d..31d9824c46cc 100644 --- a/drivers/gpu/drm/arc/arcpgu_crtc.c +++ b/drivers/gpu/drm/arc/arcpgu_crtc.c @@ -32,6 +32,7 @@ static void arc_pgu_set_pxl_fmt(struct drm_crtc *crtc) uint32_t pixel_format = fb->format->format; struct simplefb_format *format = NULL; int i; + u32 reg_ctrl; for (i = 0; i < ARRAY_SIZE(supported_formats); i++) { if (supported_formats[i].fourcc == pixel_format) @@ -41,11 +42,12 @@ static void arc_pgu_set_pxl_fmt(struct drm_crtc *crtc) if (WARN_ON(!format)) return; - if (format->fourcc == DRM_FORMAT_RGB888) - arc_pgu_write(arcpgu, ARCPGU_REG_CTRL, - arc_pgu_read(arcpgu, ARCPGU_REG_CTRL) | - ARCPGU_MODE_RGB888_MASK); - + reg_ctrl = arc_pgu_read(arcpgu, ARCPGU_REG_CTRL); + if (format->fourcc == DRM_FORMAT_RGB565) + reg_ctrl &= ~ARCPGU_MODE_RGB888_MASK; + else + reg_ctrl |= ARCPGU_MODE_RGB888_MASK; + arc_pgu_write(arcpgu, ARCPGU_REG_CTRL, reg_ctrl); } static const struct drm_crtc_funcs arc_pgu_crtc_funcs = { |