diff options
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/am335x-fb.c | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/drivers/video/am335x-fb.c b/drivers/video/am335x-fb.c index 0ec843f..bb5cc97 100644 --- a/drivers/video/am335x-fb.c +++ b/drivers/video/am335x-fb.c @@ -5,7 +5,7 @@ * minimal framebuffer driver for TI's AM335x SoC to be compatible with * Wolfgang Denk's LCD-Framework (CONFIG_LCD, common/lcd.c) * - * - supporting only 24bit RGB/TFT raster Mode (not using palette) + * - supporting 16/24/32bit RGB/TFT raster Mode (not using palette) * - sets up LCD controller as in 'am335x_lcdpanel' struct given * - starts output DMA from gd->fb_base buffer * @@ -106,6 +106,8 @@ int lcd_get_size(int *line_length) int am335xfb_init(struct am335x_lcdpanel *panel) { + u32 raster_ctrl = 0; + if (0 == gd->fb_base) { printf("ERROR: no valid fb_base stored in GLOBAL_DATA_PTR!\n"); return -1; @@ -115,6 +117,21 @@ int am335xfb_init(struct am335x_lcdpanel *panel) return -1; } + /* We can already set the bits for the raster_ctrl in this check */ + switch (panel->bpp) { + case 16: + break; + case 32: + raster_ctrl |= LCD_TFT_24BPP_UNPACK; + /* fallthrough */ + case 24: + raster_ctrl |= LCD_TFT_24BPP_MODE; + break; + default: + error("am335x-fb: invalid bpp value: %d\n", panel->bpp); + return -1; + } + debug("setting up LCD-Controller for %dx%dx%d (hfp=%d,hbp=%d,hsw=%d / ", panel->hactive, panel->vactive, panel->bpp, panel->hfp, panel->hbp, panel->hsw); @@ -126,6 +143,8 @@ int am335xfb_init(struct am335x_lcdpanel *panel) /* palette default entry */ memset((void *)gd->fb_base, 0, 0x20); *(unsigned int *)gd->fb_base = 0x4000; + /* point fb behind palette */ + gd->fb_base += 0x20; /* turn ON display through powercontrol function if accessible */ if (0 != panel->panel_power_ctrl) @@ -137,9 +156,9 @@ int am335xfb_init(struct am335x_lcdpanel *panel) lcdhw->raster_ctrl = 0; lcdhw->ctrl = LCD_CLK_DIVISOR(panel->pxl_clk_div) | LCD_RASTER_MODE; lcdhw->lcddma_fb0_base = gd->fb_base; - lcdhw->lcddma_fb0_ceiling = gd->fb_base + FBSIZE(panel) + 0x20; + lcdhw->lcddma_fb0_ceiling = gd->fb_base + FBSIZE(panel); lcdhw->lcddma_fb1_base = gd->fb_base; - lcdhw->lcddma_fb1_ceiling = gd->fb_base + FBSIZE(panel) + 0x20; + lcdhw->lcddma_fb1_ceiling = gd->fb_base + FBSIZE(panel); lcdhw->lcddma_ctrl = LCD_DMA_BURST_SIZE(LCD_DMA_BURST_16); lcdhw->raster_timing0 = LCD_HORLSB(panel->hactive) | @@ -157,14 +176,11 @@ int am335xfb_init(struct am335x_lcdpanel *panel) LCD_HBPMSB(panel->hbp) | LCD_HFPMSB(panel->hfp) | 0x0000FF00; /* clk cycles for ac-bias */ - lcdhw->raster_ctrl = LCD_TFT_24BPP_MODE | - LCD_TFT_24BPP_UNPACK | + lcdhw->raster_ctrl = raster_ctrl | LCD_PALMODE_RAWDATA | LCD_TFT_MODE | LCD_RASTER_ENABLE; - gd->fb_base += 0x20; /* point fb behind palette */ - debug("am335x-fb: waiting picture to be stable.\n."); mdelay(panel->pon_delay); |