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    Subject[PATCH v2 20/43] drm/sun4i: frontend: Determine input format based on colorspace
    Date
    Since all the RGB input formats have the same value for the DATA_FMT
    field of the INPUT_FMT register, we can group them when the format is
    known to be RGB. Here, we assume that a non-YUV format is RGB, because
    the hardware does not support any other colorspace than RGB and YUV.
    Thus, we can use the associated common DRM helper.

    Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
    ---
    drivers/gpu/drm/sun4i/sun4i_frontend.c | 10 ++++------
    1 file changed, 4 insertions(+), 6 deletions(-)

    diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.c b/drivers/gpu/drm/sun4i/sun4i_frontend.c
    index a16697b0eac5..7a8efbd516ac 100644
    --- a/drivers/gpu/drm/sun4i/sun4i_frontend.c
    +++ b/drivers/gpu/drm/sun4i/sun4i_frontend.c
    @@ -106,14 +106,12 @@ 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_XRGB8888:
    + if (!drm_format_is_yuv(fmt))
    *val = SUN4I_FRONTEND_INPUT_FMT_DATA_FMT_RGB;
    - return 0;
    -
    - default:
    + else
    return -EINVAL;
    - }
    +
    + return 0;
    }

    static int sun4i_frontend_drm_format_to_input_mode(uint32_t fmt, u32 *val)
    --
    2.19.1
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