[linux-sunxi] [PATCH RESEND v5 08/23] drm/sun4i: frontend: Add support for packed YUV422 input formats

[Paul Kocialkowski]

This introduces support for packed YUV formats with 4:2:2 sampling using
the frontend. Definitions are introduced for the data format and pixel
sequence input format register values.

Signed-off-by: Paul Kocialkowski <paul.kocialkow...@bootlin.com>
Acked-by: Maxime Ripard <maxime.rip...@bootlin.com>
---
 drivers/gpu/drm/sun4i/sun4i_frontend.c | 22 ++++++++++++++++++++++
 drivers/gpu/drm/sun4i/sun4i_frontend.h |  5 +++++
 2 files changed, 27 insertions(+)

diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.c 
b/drivers/gpu/drm/sun4i/sun4i_frontend.c
index bf37a4ea81c5..1946dd9e58d9 100644
--- a/drivers/gpu/drm/sun4i/sun4i_frontend.c
+++ b/drivers/gpu/drm/sun4i/sun4i_frontend.c
@@ -133,6 +133,8 @@ sun4i_frontend_drm_format_to_input_fmt(const struct 
drm_format_info *format,
 {
        if (!format->is_yuv)
                *val = SUN4I_FRONTEND_INPUT_FMT_DATA_FMT_RGB;
+       else if (drm_format_info_is_yuv_sampling_422(format))
+               *val = SUN4I_FRONTEND_INPUT_FMT_DATA_FMT_YUV422;
        else
                return -EINVAL;
 
@@ -160,10 +162,26 @@ sun4i_frontend_drm_format_to_input_sequence(const struct 
drm_format_info *format
                *val = SUN4I_FRONTEND_INPUT_FMT_DATA_PS_BGRX;
                return 0;
 
+       case DRM_FORMAT_UYVY:
+               *val = SUN4I_FRONTEND_INPUT_FMT_DATA_PS_UYVY;
+               return 0;
+
+       case DRM_FORMAT_VYUY:
+               *val = SUN4I_FRONTEND_INPUT_FMT_DATA_PS_VYUY;
+               return 0;
+
        case DRM_FORMAT_XRGB8888:
                *val = SUN4I_FRONTEND_INPUT_FMT_DATA_PS_XRGB;
                return 0;
 
+       case DRM_FORMAT_YUYV:
+               *val = SUN4I_FRONTEND_INPUT_FMT_DATA_PS_YUYV;
+               return 0;
+
+       case DRM_FORMAT_YVYU:
+               *val = SUN4I_FRONTEND_INPUT_FMT_DATA_PS_YVYU;
+               return 0;
+
        default:
                return -EINVAL;
        }
@@ -187,7 +205,11 @@ static int 
sun4i_frontend_drm_format_to_output_fmt(uint32_t fmt, u32 *val)
 
 static const uint32_t sun4i_frontend_formats[] = {
        DRM_FORMAT_BGRX8888,
+       DRM_FORMAT_UYVY,
+       DRM_FORMAT_VYUY,
        DRM_FORMAT_XRGB8888,
+       DRM_FORMAT_YUYV,
+       DRM_FORMAT_YVYU,
 };
 
 bool sun4i_frontend_format_is_supported(uint32_t fmt, uint64_t modifier)
diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.h 
b/drivers/gpu/drm/sun4i/sun4i_frontend.h
index 17b46ecf7d9e..e287a71a0db9 100644
--- a/drivers/gpu/drm/sun4i/sun4i_frontend.h
+++ b/drivers/gpu/drm/sun4i/sun4i_frontend.h
@@ -27,7 +27,12 @@
 
 #define SUN4I_FRONTEND_INPUT_FMT_REG           0x04c
 #define SUN4I_FRONTEND_INPUT_FMT_DATA_MOD_PACKED       (1 << 8)
+#define SUN4I_FRONTEND_INPUT_FMT_DATA_FMT_YUV422       (1 << 4)
 #define SUN4I_FRONTEND_INPUT_FMT_DATA_FMT_RGB          (5 << 4)
+#define SUN4I_FRONTEND_INPUT_FMT_DATA_PS_UYVY          0
+#define SUN4I_FRONTEND_INPUT_FMT_DATA_PS_YUYV          1
+#define SUN4I_FRONTEND_INPUT_FMT_DATA_PS_VYUY          2
+#define SUN4I_FRONTEND_INPUT_FMT_DATA_PS_YVYU          3
 #define SUN4I_FRONTEND_INPUT_FMT_DATA_PS_BGRX          0
 #define SUN4I_FRONTEND_INPUT_FMT_DATA_PS_XRGB          1
 
-- 
2.20.1

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