From: Paul Kocialkowski Date: Fri, 23 Nov 2018 09:24:34 +0000 (+0100) Subject: drm/sun4i: frontend: Replace ARGB with XRGB as supported format X-Git-Tag: v5.0-rc1~185^2~13^2~24 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b79a3a97f64f90dac79a9fc57a0280607306ba38;p=thirdparty%2Flinux.git drm/sun4i: frontend: Replace ARGB with XRGB as supported format The frontend documentation (for the A33) mentions that ARGB is supported as output, but with the alpha component always set to 0xff. In practice, this means that the alpha component cannot be preserved when going through the frontend. Since the information is lost, ARGB is not properly supported. As a result, expose the matching format supported by the frontend (both for input and output) as XRGB instead of ARGB. Since ARGB was the selected format for connecting the frontend to the backend, change it to XRGB to reflect this as well. The A31 and A80 SoCs apparently have a bit to enable proper alpha, but this is not supported at this point (see the comment already in the code). Signed-off-by: Paul Kocialkowski Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20181123092515.2511-3-paul.kocialkowski@bootlin.com --- diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.c b/drivers/gpu/drm/sun4i/sun4i_frontend.c index ddf6cfa6dd235..3ea9255848912 100644 --- a/drivers/gpu/drm/sun4i/sun4i_frontend.c +++ b/drivers/gpu/drm/sun4i/sun4i_frontend.c @@ -107,7 +107,7 @@ EXPORT_SYMBOL(sun4i_frontend_update_buffer); static int sun4i_frontend_drm_format_to_input_fmt(uint32_t fmt, u32 *val) { switch (fmt) { - case DRM_FORMAT_ARGB8888: + case DRM_FORMAT_XRGB8888: *val = 5; return 0; @@ -120,7 +120,6 @@ static int sun4i_frontend_drm_format_to_output_fmt(uint32_t fmt, u32 *val) { switch (fmt) { case DRM_FORMAT_XRGB8888: - case DRM_FORMAT_ARGB8888: *val = 2; return 0; diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.c b/drivers/gpu/drm/sun4i/sun4i_layer.c index 7ba0f5a6f50d7..1d007001ea71e 100644 --- a/drivers/gpu/drm/sun4i/sun4i_layer.c +++ b/drivers/gpu/drm/sun4i/sun4i_layer.c @@ -100,9 +100,9 @@ static void sun4i_backend_layer_atomic_update(struct drm_plane *plane, sun4i_frontend_update_coord(frontend, plane); sun4i_frontend_update_buffer(frontend, plane); sun4i_frontend_update_formats(frontend, plane, - DRM_FORMAT_ARGB8888); + DRM_FORMAT_XRGB8888); sun4i_backend_update_layer_frontend(backend, layer->id, - DRM_FORMAT_ARGB8888); + DRM_FORMAT_XRGB8888); sun4i_frontend_enable(frontend); } else { sun4i_backend_update_layer_formats(backend, layer->id, plane);