The fimd hardware supports variable plane alpha. Currently planes
are opaque, make this configurable.
Tested on TRATS2 with Exynos 4412 CPU, on top of exynos-drm-next.
Signed-off-by: Christoph Manszewski <c.manszewski@xxxxxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_drm_fimd.c | 69 +++++++++++++++++++++++---------
include/video/samsung_fimd.h | 1 +
2 files changed, 51 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index b7f56935a46b..06d5d2422246 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -229,6 +229,21 @@ static const uint32_t fimd_formats[] = {
DRM_FORMAT_ARGB8888,
};
+static const unsigned int capabilities[WINDOWS_NR] = {
+ 0,
+ EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
+ EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
+ EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
+ EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
+};
+
+static inline void fimd_set_bits(struct fimd_context *ctx, u32 reg, u32 mask,
+ u32 val)
+{
+ val = (val & mask) | (readl(ctx->regs + reg) & ~mask);
+ writel(val, ctx->regs + reg);
+}
+
static int fimd_enable_vblank(struct exynos_drm_crtc *crtc)
{
struct fimd_context *ctx = crtc->ctx;
@@ -552,10 +567,38 @@ static void fimd_commit(struct exynos_drm_crtc *crtc)
writel(val, ctx->regs + VIDCON0);
}
+static void fimd_win_set_bldmod(struct fimd_context *ctx, unsigned int win,
+ struct drm_framebuffer *fb)
+{
+ struct exynos_drm_plane plane = ctx->planes[win];
+ struct exynos_drm_plane_state *state =
+ to_exynos_plane_state(plane.base.state);
+ unsigned int alpha = state->base.alpha;
+ u32 win_alpha = alpha >> 8;
+ u32 val = 0;
+
+ /* OSD alpha */
+ val = VIDISD14C_ALPHA0_R(alpha >> 4) |
+ VIDISD14C_ALPHA0_G(win_alpha >> 4) |
+ VIDISD14C_ALPHA0_B(win_alpha >> 4) |
+ VIDISD14C_ALPHA1_R(win_alpha >> 4) |
+ VIDISD14C_ALPHA1_G(win_alpha >> 4) |
+ VIDISD14C_ALPHA1_B(win_alpha >> 4);
+
+ writel(val, ctx->regs + VIDOSD_C(win));
+
+ val = VIDW_ALPHA_R(win_alpha & 0xf) | VIDW_ALPHA_G(win_alpha & 0xf) |
+ VIDW_ALPHA_G(win_alpha & 0xf);
+ writel(val, ctx->regs + VIDWnALPHA0(win));
+ writel(val, ctx->regs + VIDWnALPHA1(win));
+ fimd_set_bits(ctx, BLENDCON, BLENDCON_NEW_MASK,
+ BLENDCON_NEW_8BIT_ALPHA_VALUE);
+}
static void fimd_win_set_pixfmt(struct fimd_context *ctx, unsigned int win,
- uint32_t pixel_format, int width)
+ struct drm_framebuffer *fb, int width)
{
+ uint32_t pixel_format = fb->format->format;
unsigned long val;
val = WINCONx_ENWIN;
@@ -596,6 +639,7 @@ static void fimd_win_set_pixfmt(struct fimd_context *ctx, unsigned int win,
| WINCON1_BLD_PIX | WINCON1_ALPHA_SEL;
val |= WINCONx_WSWP;
val |= WINCONx_BURSTLEN_16WORD;
+ val |= WINCON1_ALPHA_MUL;
break;
}
@@ -607,7 +651,7 @@ static void fimd_win_set_pixfmt(struct fimd_context *ctx, unsigned int win,
* still better to change dma-burst than displaying garbage.
*/
- if (width < MIN_FB_WIDTH_FOR_16WORD_BURST) {
+ if (fb->width < MIN_FB_WIDTH_FOR_16WORD_BURST) {
val &= ~WINCONx_BURSTLEN_MASK;
val |= WINCONx_BURSTLEN_4WORD;
}
@@ -615,22 +659,8 @@ static void fimd_win_set_pixfmt(struct fimd_context *ctx, unsigned int win,
writel(val, ctx->regs + WINCON(win));
/* hardware window 0 doesn't support alpha channel. */
- if (win != 0) {
- /* OSD alpha */
- val = VIDISD14C_ALPHA0_R(0xf) |
- VIDISD14C_ALPHA0_G(0xf) |
- VIDISD14C_ALPHA0_B(0xf) |
- VIDISD14C_ALPHA1_R(0xf) |
- VIDISD14C_ALPHA1_G(0xf) |
- VIDISD14C_ALPHA1_B(0xf);
-
- writel(val, ctx->regs + VIDOSD_C(win));
-
- val = VIDW_ALPHA_R(0xf) | VIDW_ALPHA_G(0xf) |
- VIDW_ALPHA_G(0xf);
- writel(val, ctx->regs + VIDWnALPHA0(win));
- writel(val, ctx->regs + VIDWnALPHA1(win));
- }
+ if (win != 0)
+ fimd_win_set_bldmod(ctx, win, fb);
}
static void fimd_win_set_colkey(struct fimd_context *ctx, unsigned int win)
@@ -786,7 +816,7 @@ static void fimd_update_plane(struct exynos_drm_crtc *crtc,
DRM_DEBUG_KMS("osd size = 0x%x\n", (unsigned int)val);
}
- fimd_win_set_pixfmt(ctx, win, fb->format->format, state->src.w);
+ fimd_win_set_pixfmt(ctx, win, fb, state->src.w);
/* hardware window 0 doesn't support color key. */
if (win != 0)
@@ -988,6 +1018,7 @@ static int fimd_bind(struct device *dev, struct device *master, void *data)
ctx->configs[i].num_pixel_formats = ARRAY_SIZE(fimd_formats);
ctx->configs[i].zpos = i;
ctx->configs[i].type = fimd_win_types[i];
+ ctx->configs[i].capabilities = capabilities[i];
ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
&ctx->configs[i]);
if (ret)
diff --git a/include/video/samsung_fimd.h b/include/video/samsung_fimd.h
index d8fc96ed11e9..f070b7c0d2cf 100644
--- a/include/video/samsung_fimd.h
+++ b/include/video/samsung_fimd.h
@@ -211,6 +211,7 @@
#define WINCON0_BPPMODE_24BPP_888 (0xb << 2)
#define WINCON1_LOCALSEL_CAMIF (1 << 23)
+#define WINCON1_ALPHA_MUL (1 << 7)
#define WINCON1_BLD_PIX (1 << 6)
#define WINCON1_BPPMODE_MASK (0xf << 2)
#define WINCON1_BPPMODE_SHIFT 2
--
2.7.4
