This updates the blending setup when the layer configuration
changes (triggered by mixer_win_{commit,disable}).
Extra care has to be taken for the layer that is currently
being enabled/disabled.
Signed-off-by: Tobias Jakobi <tjakobi@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_mixer.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 3ab7a01..430d10c 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -177,6 +177,18 @@ static inline bool is_alpha_format(const struct mixer_context* ctx, unsigned int
}
}
+static inline unsigned int layer_bitmask(const struct mixer_context* ctx)
+{
+ unsigned int i, mask = 0;
+
+ for (i = 0; i < MIXER_WIN_NR; ++i) {
+ if (ctx->planes[i].enabled)
+ mask |= (1 << i);
+ }
+
+ return mask;
+}
+
static inline u32 vp_reg_read(struct mixer_resources *res, u32 reg_id)
{
return readl(res->vp_regs + reg_id);
@@ -513,6 +525,7 @@ static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win, bool enable)
{
struct mixer_resources *res = &ctx->mixer_res;
+ unsigned int enable_state;
u32 val = enable ? ~0 : 0;
switch (win) {
@@ -530,6 +543,16 @@ static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win, bool en
}
break;
}
+
+ /* Determine the current enabled/disabled state of the layers. */
+ enable_state = layer_bitmask(ctx);
+ if (enable)
+ enable_state |= (1 << win);
+ else
+ enable_state &= ~(1 << win);
+
+ /* Layer configuration has changed, update blending setup. */
+ mixer_layer_blending(ctx, enable_state);
}
static void mixer_run(struct mixer_context *ctx)
--
2.0.5
--
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