korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-15 23:14:31 +08:00
Code Issues Packages Projects Releases Wiki Activity

drm/tilcdc: Add timeout wait for palette loading to complete

Browse Source 
Add timeout wait for palette loadind to complete. We do not want to
hang forever if palette loaded interrupt does not arrive for some
reason.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Tested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Jyri Sarha 2016-11-17 18:46:16 +02:00
parent 55e165c4d9
commit e59f5af9fb
1 changed files with 5 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/tilcdc/tilcdc_crtc.c
View File

@ -125,6 +125,7 @@ static void tilcdc_crtc_load_palette(struct drm_crtc *crtc)
struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct tilcdc_drm_private *priv = dev->dev_private;
int ret;
dma_fb_base = tilcdc_read(dev, LCDC_DMA_FB_BASE_ADDR_0_REG);
dma_fb_ceiling = tilcdc_read(dev, LCDC_DMA_FB_CEILING_ADDR_0_REG);
@ -152,7 +153,10 @@ static void tilcdc_crtc_load_palette(struct drm_crtc *crtc)
tilcdc_clear_irqstatus(dev, 0xffffffff);
tilcdc_set(dev, LCDC_RASTER_CTRL_REG, LCDC_RASTER_ENABLE);
wait_for_completion(&tilcdc_crtc->palette_loaded);
ret = wait_for_completion_timeout(&tilcdc_crtc->palette_loaded,
msecs_to_jiffies(50));
if (ret == 0)
dev_err(dev->dev, "%s: Palette loading timeout", __func__);
/* Disable LCDC DMA and DMA Palette Loaded Interrupt. */
tilcdc_clear(dev, LCDC_RASTER_CTRL_REG, LCDC_RASTER_ENABLE);