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Commit 2efec4f3 authored by Tomi Valkeinen's avatar Tomi Valkeinen Committed by Jyri Sarha
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drm/tilcdc: split reset to a separate function 



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: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
[Added description to the patch, changed mdelay(500) to usleep_range(250, 1000)]
Signed-off-by: default avatarJyri Sarha <jsarha@ti.com>
parent 1aea1e79

drivers/gpu/drm/tilcdc/tilcdc_crtc.c

+14 −7
Original line number Diff line number Diff line
@@ -112,18 +112,25 @@ 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 tilcdc_drm_private *priv = dev->dev_private;



	if (priv->rev == 2) {

	if (priv->rev != 2)

		return;



	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);

		msleep(1);

}



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_RASTER_CTRL_REG, LCDC_PALETTE_LOAD_MODE(DATA_ONLY));

	tilcdc_set(dev, LCDC_RASTER_CTRL_REG, LCDC_RASTER_ENABLE);