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-rw-r--r--drivers/gpu/drm/exynos/exynos_mixer.c193
1 files changed, 118 insertions, 75 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index b20c063d0b08..6c2c49912f13 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -60,6 +60,8 @@ struct hdmi_win_data {
unsigned int mode_width;
unsigned int mode_height;
unsigned int scan_flags;
+ bool enabled;
+ bool resume;
};
struct mixer_resources {
@@ -688,60 +690,6 @@ static int mixer_iommu_on(void *ctx, bool enable)
return 0;
}
-static void mixer_poweron(struct mixer_context *ctx)
-{
- struct mixer_resources *res = &ctx->mixer_res;
-
- DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
-
- mutex_lock(&ctx->mixer_mutex);
- if (ctx->powered) {
- mutex_unlock(&ctx->mixer_mutex);
- return;
- }
- ctx->powered = true;
- mutex_unlock(&ctx->mixer_mutex);
-
- pm_runtime_get_sync(ctx->dev);
-
- clk_enable(res->mixer);
- if (ctx->vp_enabled) {
- clk_enable(res->vp);
- clk_enable(res->sclk_mixer);
- }
-
- mixer_reg_write(res, MXR_INT_EN, ctx->int_en);
- mixer_win_reset(ctx);
-}
-
-static void mixer_poweroff(struct mixer_context *ctx)
-{
- struct mixer_resources *res = &ctx->mixer_res;
-
- DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
-
- mutex_lock(&ctx->mixer_mutex);
- if (!ctx->powered)
- goto out;
- mutex_unlock(&ctx->mixer_mutex);
-
- ctx->int_en = mixer_reg_read(res, MXR_INT_EN);
-
- clk_disable(res->mixer);
- if (ctx->vp_enabled) {
- clk_disable(res->vp);
- clk_disable(res->sclk_mixer);
- }
-
- pm_runtime_put_sync(ctx->dev);
-
- mutex_lock(&ctx->mixer_mutex);
- ctx->powered = false;
-
-out:
- mutex_unlock(&ctx->mixer_mutex);
-}
-
static int mixer_enable_vblank(void *ctx, int pipe)
{
struct mixer_context *mixer_ctx = ctx;
@@ -769,27 +717,6 @@ static void mixer_disable_vblank(void *ctx)
mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
}
-static void mixer_dpms(void *ctx, int mode)
-{
- struct mixer_context *mixer_ctx = ctx;
-
- DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
-
- switch (mode) {
- case DRM_MODE_DPMS_ON:
- mixer_poweron(mixer_ctx);
- break;
- case DRM_MODE_DPMS_STANDBY:
- case DRM_MODE_DPMS_SUSPEND:
- case DRM_MODE_DPMS_OFF:
- mixer_poweroff(mixer_ctx);
- break;
- default:
- DRM_DEBUG_KMS("unknown dpms mode: %d\n", mode);
- break;
- }
-}
-
static void mixer_win_mode_set(void *ctx,
struct exynos_drm_overlay *overlay)
{
@@ -856,6 +783,8 @@ static void mixer_win_commit(void *ctx, int win)
vp_video_buffer(mixer_ctx, win);
else
mixer_graph_buffer(mixer_ctx, win);
+
+ mixer_ctx->win_data[win].enabled = true;
}
static void mixer_win_disable(void *ctx, int win)
@@ -866,6 +795,14 @@ static void mixer_win_disable(void *ctx, int win)
DRM_DEBUG_KMS("[%d] %s, win: %d\n", __LINE__, __func__, win);
+ mutex_lock(&mixer_ctx->mixer_mutex);
+ if (!mixer_ctx->powered) {
+ mutex_unlock(&mixer_ctx->mixer_mutex);
+ mixer_ctx->win_data[win].resume = false;
+ return;
+ }
+ mutex_unlock(&mixer_ctx->mixer_mutex);
+
spin_lock_irqsave(&res->reg_slock, flags);
mixer_vsync_set_update(mixer_ctx, false);
@@ -873,6 +810,8 @@ static void mixer_win_disable(void *ctx, int win)
mixer_vsync_set_update(mixer_ctx, true);
spin_unlock_irqrestore(&res->reg_slock, flags);
+
+ mixer_ctx->win_data[win].enabled = false;
}
static void mixer_wait_for_vblank(void *ctx)
@@ -898,6 +837,110 @@ static void mixer_wait_for_vblank(void *ctx)
DRM_DEBUG_KMS("vblank wait timed out.\n");
}
+static void mixer_window_suspend(struct mixer_context *ctx)
+{
+ struct hdmi_win_data *win_data;
+ int i;
+
+ for (i = 0; i < MIXER_WIN_NR; i++) {
+ win_data = &ctx->win_data[i];
+ win_data->resume = win_data->enabled;
+ mixer_win_disable(ctx, i);
+ }
+ mixer_wait_for_vblank(ctx);
+}
+
+static void mixer_window_resume(struct mixer_context *ctx)
+{
+ struct hdmi_win_data *win_data;
+ int i;
+
+ for (i = 0; i < MIXER_WIN_NR; i++) {
+ win_data = &ctx->win_data[i];
+ win_data->enabled = win_data->resume;
+ win_data->resume = false;
+ }
+}
+
+static void mixer_poweron(struct mixer_context *ctx)
+{
+ struct mixer_resources *res = &ctx->mixer_res;
+
+ DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
+
+ mutex_lock(&ctx->mixer_mutex);
+ if (ctx->powered) {
+ mutex_unlock(&ctx->mixer_mutex);
+ return;
+ }
+ ctx->powered = true;
+ mutex_unlock(&ctx->mixer_mutex);
+
+ pm_runtime_get_sync(ctx->dev);
+
+ clk_enable(res->mixer);
+ if (ctx->vp_enabled) {
+ clk_enable(res->vp);
+ clk_enable(res->sclk_mixer);
+ }
+
+ mixer_reg_write(res, MXR_INT_EN, ctx->int_en);
+ mixer_win_reset(ctx);
+
+ mixer_window_resume(ctx);
+}
+
+static void mixer_poweroff(struct mixer_context *ctx)
+{
+ struct mixer_resources *res = &ctx->mixer_res;
+
+ DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
+
+ mutex_lock(&ctx->mixer_mutex);
+ if (!ctx->powered)
+ goto out;
+ mutex_unlock(&ctx->mixer_mutex);
+
+ mixer_window_suspend(ctx);
+
+ ctx->int_en = mixer_reg_read(res, MXR_INT_EN);
+
+ clk_disable(res->mixer);
+ if (ctx->vp_enabled) {
+ clk_disable(res->vp);
+ clk_disable(res->sclk_mixer);
+ }
+
+ pm_runtime_put_sync(ctx->dev);
+
+ mutex_lock(&ctx->mixer_mutex);
+ ctx->powered = false;
+
+out:
+ mutex_unlock(&ctx->mixer_mutex);
+}
+
+static void mixer_dpms(void *ctx, int mode)
+{
+ struct mixer_context *mixer_ctx = ctx;
+
+ DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
+
+ switch (mode) {
+ case DRM_MODE_DPMS_ON:
+ mixer_poweron(mixer_ctx);
+ break;
+ case DRM_MODE_DPMS_STANDBY:
+ case DRM_MODE_DPMS_SUSPEND:
+ case DRM_MODE_DPMS_OFF:
+ mixer_poweroff(mixer_ctx);
+ break;
+ default:
+ DRM_DEBUG_KMS("unknown dpms mode: %d\n", mode);
+ break;
+ }
+}
+
static struct exynos_mixer_ops mixer_ops = {
/* manager */
.iommu_on = mixer_iommu_on,
generated by cgit v1.2.3 (git 2.39.0) at 2024-10-24 16:36:30 +0300