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drm/exynos: mixer: Make plane alpha configurable

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The mixer hardware supports variable plane alpha. Currently planes are
opaque, make this configurable.

Tested on Odroid-U3 with Exynos 4412 CPU, kernel next-20180913
using modetest.

Signed-off-by: Christoph Manszewski <c.manszewski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Christoph Manszewski
2018-09-21 14:24:38 +02:00
committed by Inki Dae
parent 482582c021
commit 6ac99a328e
4 changed files with 30 additions and 16 deletions
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5
drivers/gpu/drm/exynos/regs-mixer.h
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@@ -109,12 +109,15 @@
#define MXR_CFG_SCAN_HD (1 << 0)
#define MXR_CFG_SCAN_MASK 0x47
/* bits for MXR_VIDEO_CFG */
#define MXR_VID_CFG_BLEND_EN (1 << 16)
/* bits for MXR_GRAPHICn_CFG */
#define MXR_GRP_CFG_COLOR_KEY_DISABLE (1 << 21)
#define MXR_GRP_CFG_BLEND_PRE_MUL (1 << 20)
#define MXR_GRP_CFG_WIN_BLEND_EN (1 << 17)
#define MXR_GRP_CFG_PIXEL_BLEND_EN (1 << 16)
#define MXR_GRP_CFG_MISC_MASK ((3 << 16) | (3 << 20))
#define MXR_GRP_CFG_MISC_MASK ((3 << 16) | (3 << 20) | 0xff)
#define MXR_GRP_CFG_FORMAT_VAL(x) MXR_MASK_VAL(x, 11, 8)
#define MXR_GRP_CFG_FORMAT_MASK MXR_GRP_CFG_FORMAT_VAL(~0)
#define MXR_GRP_CFG_ALPHA_VAL(x) MXR_MASK_VAL(x, 7, 0)