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drm/tilcdc: use flip-work helper

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Signed-off-by: Rob Clark <robdclark@gmail.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Rob Clark 2013-08-07 13:41:20 -04:00 committed by Dave Airlie
parent cabaafc789
commit a464d618c7
1 changed files with 12 additions and 21 deletions
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33
drivers/gpu/drm/tilcdc/tilcdc_crtc.c
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@ -15,7 +15,7 @@
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/kfifo.h>
#include "drm_flip_work.h"
#include "tilcdc_drv.h"
#include "tilcdc_regs.h"
@ -35,21 +35,18 @@ struct tilcdc_crtc {
struct drm_framebuffer *scanout[2];
/* for deferred fb unref's: */
DECLARE_KFIFO_PTR(unref_fifo, struct drm_framebuffer *);
struct work_struct work;
struct drm_flip_work unref_work;
};
#define to_tilcdc_crtc(x) container_of(x, struct tilcdc_crtc, base)
static void unref_worker(struct work_struct *work)
static void unref_worker(struct drm_flip_work *work, void *val)
{
struct tilcdc_crtc *tilcdc_crtc =
container_of(work, struct tilcdc_crtc, work);
container_of(work, struct tilcdc_crtc, unref_work);
struct drm_device *dev = tilcdc_crtc->base.dev;
struct drm_framebuffer *fb;
mutex_lock(&dev->mode_config.mutex);
while (kfifo_get(&tilcdc_crtc->unref_fifo, &fb))
drm_framebuffer_unreference(fb);
drm_framebuffer_unreference(val);
mutex_unlock(&dev->mode_config.mutex);
}
@ -68,19 +65,14 @@ static void set_scanout(struct drm_crtc *crtc, int n)
};
struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct tilcdc_drm_private *priv = dev->dev_private;
pm_runtime_get_sync(dev->dev);
tilcdc_write(dev, base_reg[n], tilcdc_crtc->start);
tilcdc_write(dev, ceil_reg[n], tilcdc_crtc->end);
if (tilcdc_crtc->scanout[n]) {
if (kfifo_put(&tilcdc_crtc->unref_fifo,
(const struct drm_framebuffer **)&tilcdc_crtc->scanout[n])) {
struct tilcdc_drm_private *priv = dev->dev_private;
queue_work(priv->wq, &tilcdc_crtc->work);
} else {
dev_err(dev->dev, "unref fifo full!\n");
drm_framebuffer_unreference(tilcdc_crtc->scanout[n]);
}
drm_flip_work_queue(&tilcdc_crtc->unref_work, tilcdc_crtc->scanout[n]);
drm_flip_work_commit(&tilcdc_crtc->unref_work, priv->wq);
}
tilcdc_crtc->scanout[n] = crtc->fb;
drm_framebuffer_reference(tilcdc_crtc->scanout[n]);
@ -149,8 +141,8 @@ static void tilcdc_crtc_destroy(struct drm_crtc *crtc)
WARN_ON(tilcdc_crtc->dpms == DRM_MODE_DPMS_ON);
drm_crtc_cleanup(crtc);
WARN_ON(!kfifo_is_empty(&tilcdc_crtc->unref_fifo));
kfifo_free(&tilcdc_crtc->unref_fifo);
drm_flip_work_cleanup(&tilcdc_crtc->unref_work);
kfree(tilcdc_crtc);
}
@ -671,14 +663,13 @@ struct drm_crtc *tilcdc_crtc_create(struct drm_device *dev)
tilcdc_crtc->dpms = DRM_MODE_DPMS_OFF;
init_waitqueue_head(&tilcdc_crtc->frame_done_wq);
ret = kfifo_alloc(&tilcdc_crtc->unref_fifo, 16, GFP_KERNEL);
ret = drm_flip_work_init(&tilcdc_crtc->unref_work, 16,
"unref", unref_worker);
if (ret) {
dev_err(dev->dev, "could not allocate unref FIFO\n");
goto fail;
}
INIT_WORK(&tilcdc_crtc->work, unref_worker);
ret = drm_crtc_init(dev, crtc, &tilcdc_crtc_funcs);
if (ret < 0)
goto fail;