drm/exynos: use drm core to handle page-flip event

Exynos DRM framework handled page-flip event with custom code.
The patch replaces it with drm-core vblank queue.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

8 files changed, 21 insertions, 78 deletions

diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
index ac21b4000835..6ca1f3117fe8 100644
--- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
@@ -551,7 +551,6 @@ static irqreturn_t decon_irq_handler(int irq, void *dev_id)
 {
         struct decon_context *ctx = dev_id;
         u32 val;
-        int win;
 
         if (!test_bit(BIT_CLKS_ENABLED, &ctx->flags))
                 goto out;
@@ -560,16 +559,6 @@ static irqreturn_t decon_irq_handler(int irq, void *dev_id)
         val &= VIDINTCON1_INTFRMDONEPEND | VIDINTCON1_INTFRMPEND;
 
         if (val) {
-                for (win = ctx->first_win; win < WINDOWS_NR ; win++) {
-                        struct exynos_drm_plane *plane = &ctx->planes[win];
-
-                        if (!plane->pending_fb)
-                                continue;
-
-                        exynos_drm_crtc_finish_update(ctx->crtc, plane);
-                }
-
-                /* clear */
                 writel(val, ctx->addr + DECON_VIDINTCON1);
                 drm_crtc_handle_vblank(&ctx->crtc->base);
         }
diff --git a/drivers/gpu/drm/exynos/exynos7_drm_decon.c b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
index 7f9901b7777b..f4d5a2133777 100644
--- a/drivers/gpu/drm/exynos/exynos7_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
@@ -603,7 +603,6 @@ static irqreturn_t decon_irq_handler(int irq, void *dev_id)
 {
         struct decon_context *ctx = (struct decon_context *)dev_id;
         u32 val, clear_bit;
-        int win;
 
         val = readl(ctx->regs + VIDINTCON1);
 
@@ -617,14 +616,6 @@ static irqreturn_t decon_irq_handler(int irq, void *dev_id)
 
         if (!ctx->i80_if) {
                 drm_crtc_handle_vblank(&ctx->crtc->base);
-                for (win = 0 ; win < WINDOWS_NR ; win++) {
-                        struct exynos_drm_plane *plane = &ctx->planes[win];
-
-                        if (!plane->pending_fb)
-                                continue;
-
-                        exynos_drm_crtc_finish_update(ctx->crtc, plane);
-                }
 
                 /* set wait vsync event to zero and wake up queue. */
                 if (atomic_read(&ctx->wait_vsync_event)) {
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index 5b6845bc18fc..2530bf57716a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -69,8 +69,6 @@ static void exynos_crtc_atomic_begin(struct drm_crtc *crtc,
 {
         struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
 
-        exynos_crtc->event = crtc->state->event;
-
         if (exynos_crtc->ops->atomic_begin)
                 exynos_crtc->ops->atomic_begin(exynos_crtc);
 }
@@ -79,9 +77,24 @@ static void exynos_crtc_atomic_flush(struct drm_crtc *crtc,
                                      struct drm_crtc_state *old_crtc_state)
 {
         struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+        struct drm_pending_vblank_event *event;
+        unsigned long flags;
 
         if (exynos_crtc->ops->atomic_flush)
                 exynos_crtc->ops->atomic_flush(exynos_crtc);
+
+        event = crtc->state->event;
+        if (event) {
+                crtc->state->event = NULL;
+
+                spin_lock_irqsave(&crtc->dev->event_lock, flags);
+                if (drm_crtc_vblank_get(crtc) == 0)
+                        drm_crtc_arm_vblank_event(crtc, event);
+                else
+                        drm_crtc_send_vblank_event(crtc, event);
+                spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
+        }
+
 }
 
 static const struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
@@ -173,22 +186,6 @@ void exynos_drm_crtc_disable_vblank(struct drm_device *dev, unsigned int pipe)
                 exynos_crtc->ops->disable_vblank(exynos_crtc);
 }
 
-void exynos_drm_crtc_finish_update(struct exynos_drm_crtc *exynos_crtc,
-                                struct exynos_drm_plane *exynos_plane)
-{
-        struct drm_crtc *crtc = &exynos_crtc->base;
-        unsigned long flags;
-
-        exynos_plane->pending_fb = NULL;
-
-        spin_lock_irqsave(&crtc->dev->event_lock, flags);
-        if (exynos_crtc->event)
-                drm_crtc_send_vblank_event(crtc, exynos_crtc->event);
-
-        exynos_crtc->event = NULL;
-        spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
-}
-
 int exynos_drm_crtc_get_pipe_from_type(struct drm_device *drm_dev,
                                        enum exynos_drm_output_type out_type)
 {
@@ -216,18 +213,19 @@ void exynos_drm_crtc_te_handler(struct drm_crtc *crtc)
 void exynos_drm_crtc_cancel_page_flip(struct drm_crtc *crtc,
                                         struct drm_file *file)
 {
-        struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
         struct drm_pending_vblank_event *e;
         unsigned long flags;
 
         spin_lock_irqsave(&crtc->dev->event_lock, flags);
 
-        e = exynos_crtc->event;
+        e = crtc->state->event;
         if (e && e->base.file_priv == file)
-                exynos_crtc->event = NULL;
+                crtc->state->event = NULL;
+        else
+                e = NULL;
 
         spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 
-        if (e && e->base.file_priv == file)
+        if (e)
                 drm_event_cancel_free(crtc->dev, &e->base);
 }
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index cee3a4c76106..d215149e737b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -86,7 +86,6 @@ struct exynos_drm_plane {
         struct drm_plane base;
         const struct exynos_drm_plane_config *config;
         unsigned int index;
-        struct drm_framebuffer *pending_fb;
 };
 
 #define EXYNOS_DRM_PLANE_CAP_DOUBLE     (1 << 0)
@@ -172,7 +171,6 @@ struct exynos_drm_crtc {
         struct drm_crtc                 base;
         enum exynos_drm_output_type     type;
         unsigned int                    pipe;
-        struct drm_pending_vblank_event *event;
         const struct exynos_drm_crtc_ops        *ops;
         void                            *ctx;
         struct exynos_drm_clk           *pipe_clk;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 27efe3087d18..e2e405170d35 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -962,8 +962,7 @@ static const struct exynos_drm_crtc_ops fimd_crtc_ops = {
 static irqreturn_t fimd_irq_handler(int irq, void *dev_id)
 {
         struct fimd_context *ctx = (struct fimd_context *)dev_id;
-        u32 val, clear_bit, start, start_s;
-        int win;
+        u32 val, clear_bit;
 
         val = readl(ctx->regs + VIDINTCON1);
 
@@ -978,18 +977,6 @@ static irqreturn_t fimd_irq_handler(int irq, void *dev_id)
         if (!ctx->i80_if)
                 drm_crtc_handle_vblank(&ctx->crtc->base);
 
-        for (win = 0 ; win < WINDOWS_NR ; win++) {
-                struct exynos_drm_plane *plane = &ctx->planes[win];
-
-                if (!plane->pending_fb)
-                        continue;
-
-                start = readl(ctx->regs + VIDWx_BUF_START(win, 0));
-                start_s = readl(ctx->regs + VIDWx_BUF_START_S(win, 0));
-                if (start == start_s)
-                        exynos_drm_crtc_finish_update(ctx->crtc, plane);
-        }
-
         if (ctx->i80_if) {
                 /* Exits triggering mode */
                 atomic_set(&ctx->triggering, 0);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.c b/drivers/gpu/drm/exynos/exynos_drm_plane.c
index 7f32419b25ea..c2f17f30afab 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_plane.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c
@@ -238,7 +238,6 @@ static void exynos_plane_atomic_update(struct drm_plane *plane,
                 return;
 
         plane->crtc = state->crtc;
-        exynos_plane->pending_fb = state->fb;
 
         if (exynos_crtc->ops->update_plane)
                 exynos_crtc->ops->update_plane(exynos_crtc, exynos_plane);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_vidi.c b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
index a91dad65e908..57fe514d5c5b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_vidi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
@@ -175,7 +175,6 @@ static const struct exynos_drm_crtc_ops vidi_crtc_ops = {
 static void vidi_fake_vblank_timer(unsigned long arg)
 {
         struct vidi_context *ctx = (void *)arg;
-        int win;
 
         if (ctx->pipe < 0)
                 return;
@@ -183,15 +182,6 @@ static void vidi_fake_vblank_timer(unsigned long arg)
         if (drm_crtc_handle_vblank(&ctx->crtc->base))
                 mod_timer(&ctx->timer,
                         jiffies + msecs_to_jiffies(VIDI_REFRESH_TIME) - 1);
-
-        for (win = 0 ; win < WINDOWS_NR ; win++) {
-                struct exynos_drm_plane *plane = &ctx->planes[win];
-
-                if (!plane->pending_fb)
-                        continue;
-
-                exynos_drm_crtc_finish_update(ctx->crtc, plane);
-        }
 }
 
 static ssize_t vidi_show_connection(struct device *dev,
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index bea3cbd39a25..edb20a34c66c 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -754,7 +754,6 @@ static irqreturn_t mixer_irq_handler(int irq, void *arg)
         struct mixer_context *ctx = arg;
         struct mixer_resources *res = &ctx->mixer_res;
         u32 val, base, shadow;
-        int win;
 
         spin_lock(&res->reg_slock);
 
@@ -781,14 +780,6 @@ static irqreturn_t mixer_irq_handler(int irq, void *arg)
                 }
 
                 drm_crtc_handle_vblank(&ctx->crtc->base);
-                for (win = 0 ; win < MIXER_WIN_NR ; win++) {
-                        struct exynos_drm_plane *plane = &ctx->planes[win];
-
-                        if (!plane->pending_fb)
-                                continue;
-
-                        exynos_drm_crtc_finish_update(ctx->crtc, plane);
-                }
         }
 
 out: