[PATCH v2 06/27] drm/sun4i: Explain color macro in DE2 driver

Jernej Skrabec
2017-12-01T06:05:29Z

Color attribute have same format troughout the whole driver.

Rename macro, add comment with simple explanation and remove redundant
definitions.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
---
drivers/gpu/drm/sun4i/sun8i_mixer.c | 8 +++++---
drivers/gpu/drm/sun4i/sun8i_mixer.h | 4 ++--
2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c
index f4a7fa0ba7ad..5144e6d0ac56 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
@@ -317,17 +317,19 @@ static int sun8i_mixer_bind(struct device *dev, struct device *master,
regmap_write(mixer->engine.regs, SUN8I_MIXER_GLOBAL_CTL,
SUN8I_MIXER_GLOBAL_CTL_RT_EN);

+ /* Set background color to black */
+ regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_BKCOLOR,
+ SUN8I_MIXER_BLEND_COLOR_BLACK);
+
/* Initialize blender */
regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_FCOLOR_CTL,
SUN8I_MIXER_BLEND_FCOLOR_CTL_DEF);
- regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_BKCOLOR,
- SUN8I_MIXER_BLEND_BKCOLOR_DEF);
regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_MODE(0),
SUN8I_MIXER_BLEND_MODE_DEF);

regmap_write(mixer->engine.regs,
SUN8I_MIXER_BLEND_ATTR_FCOLOR(0),
- SUN8I_MIXER_BLEND_ATTR_FCOLOR_DEF);
+ SUN8I_MIXER_BLEND_COLOR_BLACK);

/* Select the first UI channel */
DRM_DEBUG_DRIVER("Selecting channel %d (first UI channel)\n",
diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.h b/drivers/gpu/drm/sun4i/sun8i_mixer.h
index db005a4bca43..9b50733298b8 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.h
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.h
@@ -45,10 +45,10 @@
#define SUN8I_MIXER_BLEND_CK_MIN(x) (0x10e0 + 0x04 * (x))
#define SUN8I_MIXER_BLEND_OUTCTL 0x10fc

+/* colors are always in AARRGGBB format */
+#define SUN8I_MIXER_BLEND_COLOR_BLACK 0xff000000
/* The following numbers are some still unknown magic numbers */
-#define SUN8I_MIXER_BLEND_ATTR_FCOLOR_DEF 0xff000000
#define SUN8I_MIXER_BLEND_FCOLOR_CTL_DEF 0x00000101
-#define SUN8I_MIXER_BLEND_BKCOLOR_DEF 0xff000000
#define SUN8I_MIXER_BLEND_MODE_DEF 0x03010301

#define SUN8I_MIXER_BLEND_OUTCTL_INTERLACED BIT(1)
--
2.15.1