diff options
| -rw-r--r-- | drivers/video/da8xx-fb.c | 11 | ||||
| -rw-r--r-- | include/video/da8xx-fb.h | 3 |
2 files changed, 10 insertions, 4 deletions
diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c index 6b7f2da6f907..6f0fb2d50c28 100644 --- a/drivers/video/da8xx-fb.c +++ b/drivers/video/da8xx-fb.c @@ -353,8 +353,8 @@ static void lcd_blit(int load_mode, struct da8xx_fb_par *par) lcd_enable_raster(); } -/* Configure the Burst Size of DMA */ -static int lcd_cfg_dma(int burst_size) +/* Configure the Burst Size and fifo threhold of DMA */ +static int lcd_cfg_dma(int burst_size, int fifo_th) { u32 reg; @@ -378,6 +378,9 @@ static int lcd_cfg_dma(int burst_size) default: return -EINVAL; } + + reg |= (fifo_th << 8); + lcdc_write(reg, LCD_DMA_CTRL_REG); return 0; @@ -679,8 +682,8 @@ static int lcd_init(struct da8xx_fb_par *par, const struct lcd_ctrl_config *cfg, lcdc_write((lcdc_read(LCD_RASTER_TIMING_2_REG) & ~LCD_INVERT_PIXEL_CLOCK), LCD_RASTER_TIMING_2_REG); - /* Configure the DMA burst size. */ - ret = lcd_cfg_dma(cfg->dma_burst_sz); + /* Configure the DMA burst size and fifo threshold. */ + ret = lcd_cfg_dma(cfg->dma_burst_sz, cfg->fifo_th); if (ret < 0) return ret; diff --git a/include/video/da8xx-fb.h b/include/video/da8xx-fb.h index 89d43b3d4cb9..5a0e4f9efb53 100644 --- a/include/video/da8xx-fb.h +++ b/include/video/da8xx-fb.h @@ -82,6 +82,9 @@ struct lcd_ctrl_config { /* Raster Data Order Select: 1=Most-to-least 0=Least-to-most */ unsigned char raster_order; + + /* DMA FIFO threshold */ + int fifo_th; }; struct lcd_sync_arg { |