xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/tilcdc: split reset to a separate function

Browse Source 
Split reset to a separate function and use usleep_range(250, 1000)
instead of msleep(1) to to keep the reset bit on long enough.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
[Added description to the patch, changed mdelay(500) to usleep_range(250, 1000)]
Signed-off-by: Jyri Sarha <jsarha@ti.com>
This commit is contained in:
Tomi Valkeinen
2015-10-20 09:37:27 +03:00
committed by Jyri Sarha
parent 1aea1e79db
commit 2efec4f306
1 changed files with 14 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/gpu/drm/tilcdc/tilcdc_crtc.c
View File

@@ -112,17 +112,24 @@ static void update_scanout(struct drm_crtc *crtc)
} }
} }
static void start(struct drm_crtc *crtc) static void reset(struct drm_crtc *crtc)
{ {
struct drm_device *dev = crtc->dev; struct drm_device *dev = crtc->dev;
struct tilcdc_drm_private *priv = dev->dev_private; struct tilcdc_drm_private *priv = dev->dev_private;
if (priv->rev == 2) { if (priv->rev != 2)
tilcdc_set(dev, LCDC_CLK_RESET_REG, LCDC_CLK_MAIN_RESET); return;
msleep(1);
tilcdc_clear(dev, LCDC_CLK_RESET_REG, LCDC_CLK_MAIN_RESET); tilcdc_set(dev, LCDC_CLK_RESET_REG, LCDC_CLK_MAIN_RESET);
msleep(1); usleep_range(250, 1000);
} tilcdc_clear(dev, LCDC_CLK_RESET_REG, LCDC_CLK_MAIN_RESET);
}
static void start(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
reset(crtc);
tilcdc_set(dev, LCDC_DMA_CTRL_REG, LCDC_DUAL_FRAME_BUFFER_ENABLE); tilcdc_set(dev, LCDC_DMA_CTRL_REG, LCDC_DUAL_FRAME_BUFFER_ENABLE);
tilcdc_set(dev, LCDC_RASTER_CTRL_REG, LCDC_PALETTE_LOAD_MODE(DATA_ONLY)); tilcdc_set(dev, LCDC_RASTER_CTRL_REG, LCDC_PALETTE_LOAD_MODE(DATA_ONLY));