Load palette at the end of mode_set_nofb(). Moving the palette loading to mode_set_nofb() saves us from storing and restoring of framebuffer addresses in dma registers that were just recently written there.
Signed-off-by: Jyri Sarha jsarha@ti.com --- drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 25 +++++-------------------- 1 file changed, 5 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c index f736a89..4472540 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c @@ -121,15 +121,12 @@ static void set_scanout(struct drm_crtc *crtc, struct drm_framebuffer *fb) */ static void tilcdc_crtc_load_palette(struct drm_crtc *crtc) { - u32 dma_fb_base, dma_fb_ceiling, raster_ctl; 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); - raster_ctl = tilcdc_read(dev, LCDC_RASTER_CTRL_REG); + reinit_completion(&tilcdc_crtc->palette_loaded);
/* Tell the LCDC where the palette is located. */ tilcdc_write(dev, LCDC_DMA_FB_BASE_ADDR_0_REG, @@ -164,11 +161,6 @@ static void tilcdc_crtc_load_palette(struct drm_crtc *crtc) tilcdc_clear(dev, LCDC_RASTER_CTRL_REG, LCDC_V1_PL_INT_ENA); else tilcdc_write(dev, LCDC_INT_ENABLE_CLR_REG, LCDC_V2_PL_INT_ENA); - - /* Restore the registers. */ - tilcdc_write(dev, LCDC_DMA_FB_BASE_ADDR_0_REG, dma_fb_base); - tilcdc_write(dev, LCDC_DMA_FB_CEILING_ADDR_0_REG, dma_fb_ceiling); - tilcdc_write(dev, LCDC_RASTER_CTRL_REG, raster_ctl); }
static void tilcdc_crtc_enable_irqs(struct drm_device *dev) @@ -239,9 +231,6 @@ static void tilcdc_crtc_enable(struct drm_crtc *crtc)
reset(crtc);
- if (!completion_done(&tilcdc_crtc->palette_loaded)) - tilcdc_crtc_load_palette(crtc); - tilcdc_crtc_enable_irqs(dev);
tilcdc_clear(dev, LCDC_DMA_CTRL_REG, LCDC_DUAL_FRAME_BUFFER_ENABLE); @@ -285,12 +274,6 @@ static void tilcdc_crtc_off(struct drm_crtc *crtc, bool shutdown) __func__); }
- /* - * LCDC will not retain the palette when reset. Make sure it gets - * reloaded on tilcdc_crtc_enable(). - */ - reinit_completion(&tilcdc_crtc->palette_loaded); - drm_crtc_vblank_off(crtc);
tilcdc_crtc_disable_irqs(dev); @@ -678,10 +661,12 @@ static void tilcdc_crtc_mode_set_nofb(struct drm_crtc *crtc)
drm_framebuffer_reference(fb);
- set_scanout(crtc, fb); - tilcdc_crtc_set_clk(crtc);
+ tilcdc_crtc_load_palette(crtc); + + set_scanout(crtc, fb); + crtc->hwmode = crtc->state->adjusted_mode; }