drm/hdlcd: Fix up crtc_state->event handling

event_list just reimplemented what drm_crtc_arm_vblank_event does. And
we also need to send out drm events when shutting down a pipe.

With this it's possible to use the new nonblocking commit support in
the helpers.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>

diff --git a/drivers/gpu/drm/arm/hdlcd_crtc.c b/drivers/gpu/drm/arm/hdlcd_crtc.c
index d1e8d31..97326c3 100644 (file)
--- a/drivers/gpu/drm/arm/hdlcd_crtc.c
+++ b/drivers/gpu/drm/arm/hdlcd_crtc.c
@@ -189,19 +189,17 @@ static void hdlcd_crtc_atomic_begin(struct drm_crtc *crtc,
                                    struct drm_crtc_state *state)
 {
        struct hdlcd_drm_private *hdlcd = crtc_to_hdlcd_priv(crtc);
-       unsigned long flags;
-
-       if (crtc->state->event) {
-               struct drm_pending_vblank_event *event = crtc->state->event;
+       struct drm_pending_vblank_event *event = crtc->state->event;
 
+       if (event) {
                crtc->state->event = NULL;
-               event->pipe = drm_crtc_index(crtc);
-
-               WARN_ON(drm_crtc_vblank_get(crtc) != 0);
 
-               spin_lock_irqsave(&crtc->dev->event_lock, flags);
-               list_add_tail(&event->base.link, &hdlcd->event_list);
-               spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
+               spin_lock_irq(&crtc->dev->event_lock);
+               if (drm_crtc_vblank_get(crtc) == 0)
+                       drm_crtc_arm_vblank_event(crtc, event);
+               else
+                       drm_crtc_send_vblank_event(crtc, event);
+               spin_unlock_irq(&crtc->dev->event_lock);
        }
 }
 

diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c
index 21b1427..fb172d2 100644 (file)
--- a/drivers/gpu/drm/arm/hdlcd_drv.c
+++ b/drivers/gpu/drm/arm/hdlcd_drv.c
@@ -49,8 +49,6 @@ static int hdlcd_load(struct drm_device *drm, unsigned long flags)
        atomic_set(&hdlcd->dma_end_count, 0);
 #endif
 
-       INIT_LIST_HEAD(&hdlcd->event_list);
-
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        hdlcd->mmio = devm_ioremap_resource(drm->dev, res);
        if (IS_ERR(hdlcd->mmio)) {
@@ -160,24 +158,9 @@ static irqreturn_t hdlcd_irq(int irq, void *arg)
                atomic_inc(&hdlcd->vsync_count);
 
 #endif
-       if (irq_status & HDLCD_INTERRUPT_VSYNC) {
-               bool events_sent = false;
-               unsigned long flags;
-               struct drm_pending_vblank_event *e, *t;
-
+       if (irq_status & HDLCD_INTERRUPT_VSYNC)
                drm_crtc_handle_vblank(&hdlcd->crtc);
 
-               spin_lock_irqsave(&drm->event_lock, flags);
-               list_for_each_entry_safe(e, t, &hdlcd->event_list, base.link) {
-                       list_del(&e->base.link);
-                       drm_crtc_send_vblank_event(&hdlcd->crtc, e);
-                       events_sent = true;
-               }
-               if (events_sent)
-                       drm_crtc_vblank_put(&hdlcd->crtc);
-               spin_unlock_irqrestore(&drm->event_lock, flags);
-       }
-
        /* acknowledge interrupt(s) */
        hdlcd_write(hdlcd, HDLCD_REG_INT_CLEAR, irq_status);
 

diff --git a/drivers/gpu/drm/arm/hdlcd_drv.h b/drivers/gpu/drm/arm/hdlcd_drv.h
index e7cea82..922a1dc 100644 (file)
--- a/drivers/gpu/drm/arm/hdlcd_drv.h
+++ b/drivers/gpu/drm/arm/hdlcd_drv.h
@@ -10,7 +10,6 @@ struct hdlcd_drm_private {
        struct clk                      *clk;
        struct drm_fbdev_cma            *fbdev;
        struct drm_framebuffer          *fb;
-       struct list_head                event_list;
        struct drm_crtc                 crtc;
        struct drm_plane                *plane;
        struct drm_atomic_state         *state;