diff options
Diffstat (limited to 'drivers/gpu/drm/tilcdc/tilcdc_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c index 3d6000cd5048..773bee27a2d0 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c @@ -89,6 +89,41 @@ static void set_scanout(struct drm_crtc *crtc, struct drm_framebuffer *fb) tilcdc_crtc->curr_fb = fb; } +static void tilcdc_crtc_enable_irqs(struct drm_device *dev) +{ + struct tilcdc_drm_private *priv = dev->dev_private; + + tilcdc_clear_irqstatus(dev, 0xffffffff); + + if (priv->rev == 1) { + tilcdc_set(dev, LCDC_RASTER_CTRL_REG, + LCDC_V1_UNDERFLOW_INT_ENA); + } else { + tilcdc_write(dev, LCDC_INT_ENABLE_SET_REG, + LCDC_V2_UNDERFLOW_INT_ENA | + LCDC_V2_END_OF_FRAME0_INT_ENA | + LCDC_FRAME_DONE | LCDC_SYNC_LOST); + } +} + +static void tilcdc_crtc_disable_irqs(struct drm_device *dev) +{ + struct tilcdc_drm_private *priv = dev->dev_private; + + /* disable irqs that we might have enabled: */ + if (priv->rev == 1) { + tilcdc_clear(dev, LCDC_RASTER_CTRL_REG, + LCDC_V1_UNDERFLOW_INT_ENA | LCDC_V1_PL_INT_ENA); + tilcdc_clear(dev, LCDC_DMA_CTRL_REG, + LCDC_V1_END_OF_FRAME_INT_ENA); + } else { + tilcdc_write(dev, LCDC_INT_ENABLE_CLR_REG, + LCDC_V2_UNDERFLOW_INT_ENA | LCDC_V2_PL_INT_ENA | + LCDC_V2_END_OF_FRAME0_INT_ENA | + LCDC_FRAME_DONE | LCDC_SYNC_LOST); + } +} + static void reset(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; @@ -108,6 +143,8 @@ static void start(struct drm_crtc *crtc) reset(crtc); + tilcdc_crtc_enable_irqs(dev); + tilcdc_clear(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); @@ -138,6 +175,8 @@ static void stop(struct drm_crtc *crtc) } drm_crtc_vblank_off(crtc); + + tilcdc_crtc_disable_irqs(dev); } static void tilcdc_crtc_destroy(struct drm_crtc *crtc) |