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drivers: video: msm: fixed the color banding issue. (Credit to marc1706)

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dfe41d02ca
This commit is contained in:
tytung
2011-11-10 01:31:07 +08:00
parent dc9dd2b9a1
commit 6d2048e7da
1 changed files with 13 additions and 9 deletions
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22
drivers/video/msm/mdp_lcdc.c
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@@ -163,7 +163,6 @@ static int lcdc_hw_init(struct mdp_lcdc_info *lcdc)
clk_set_rate(lcdc->pclk, lcdc->parms.clk_rate);
clk_set_rate(lcdc->pad_pclk, lcdc->parms.clk_rate);
#ifndef CONFIG_MACH_HTCLEO
/* write the lcdc params */
mdp_writel(lcdc->mdp, lcdc->parms.hsync_ctl, MDP_LCDC_HSYNC_CTL);
mdp_writel(lcdc->mdp, lcdc->parms.vsync_period, MDP_LCDC_VSYNC_PERIOD);
@@ -191,15 +190,21 @@ static int lcdc_hw_init(struct mdp_lcdc_info *lcdc)
mdp_writel(lcdc->mdp, 0, MDP_DMA_P_OUT_XY);
dma_cfg = mdp_readl(lcdc->mdp, MDP_DMA_P_CONFIG);
if (lcdc->pdata->overrides & MSM_MDP_LCDC_DMA_PACK_ALIGN_LSB)
dma_cfg &= ~DMA_PACK_ALIGN_MSB;
else
dma_cfg |= DMA_PACK_ALIGN_MSB;
dma_cfg |= (DMA_PACK_PATTERN_RGB |
DMA_DITHER_EN);
#if defined(CONFIG_MACH_HTCLEO)
dma_cfg |= (DMA_PACK_ALIGN_MSB |
DMA_PACK_PATTERN_RGB |
DMA_DITHER_EN);
dma_cfg |= DMA_OUT_SEL_LCDC;
dma_cfg |= DMA_IBUF_FORMAT_RGB565;
//dma_cfg &= ~DMA_DITHER_EN; // solve color banding issue - marc1706
dma_cfg &= ~DMA_DST_BITS_MASK;
#else
dma_cfg |= (DMA_PACK_ALIGN_LSB |
DMA_PACK_PATTERN_RGB |
DMA_DITHER_EN);
dma_cfg |= DMA_OUT_SEL_LCDC;
dma_cfg &= ~DMA_DST_BITS_MASK;
#endif
if(lcdc->color_format == MSM_MDP_OUT_IF_FMT_RGB565)
dma_cfg |= DMA_DSTC0G_6BITS | DMA_DSTC1B_5BITS | DMA_DSTC2R_5BITS;
@@ -210,7 +215,6 @@ static int lcdc_hw_init(struct mdp_lcdc_info *lcdc)
/* enable the lcdc timing generation */
mdp_writel(lcdc->mdp, 1, MDP_LCDC_EN);
#endif
return 0;
}