int am335xfb_init(struct am335x_lcdpanel *panel)
{
if (0 == gd->fb_base) {
printf("ERROR: no valid fb_base stored in GLOBAL_DATA_PTR!\n");
return -1;
}
if (0 == panel) {
printf("ERROR: missing ptr to am335x_lcdpanel!\n");
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);
debug("vfp=%d,vbp=%d,vsw=%d / clk-div=%d)\n",
panel->vfp, panel->vfp, panel->vsw, panel->pxl_clk_div);
debug("using frambuffer at 0x%08x with size %d.\n",
(unsigned int)gd->fb_base, FBSIZE(panel));
/* palette default entry */
memset((void *)gd->fb_base, 0, 0x20);
*(unsigned int *)gd->fb_base = 0x4000;
lcdhw->clkc_enable = LCD_CORECLKEN | LCD_LIDDCLKEN | LCD_DMACLKEN;
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_fb1_base = gd->fb_base;
lcdhw->lcddma_fb1_ceiling = gd->fb_base + FBSIZE(panel) + 0x20;
lcdhw->lcddma_ctrl = LCD_DMA_BURST_SIZE(LCD_DMA_BURST_16);
lcdhw->raster_timing0 = LCD_HORLSB(panel->hactive) |
LCD_HORMSB(panel->hactive) |
LCD_HFPLSB(panel->hfp) |
LCD_HBPLSB(panel->hbp) |
LCD_HSWLSB(panel->hsw);
lcdhw->raster_timing1 = LCD_VBP(panel->vbp) |
LCD_VFP(panel->vfp) |
LCD_VSW(panel->vsw) |
LCD_VERLSB(panel->vactive);
lcdhw->raster_timing2 = LCD_HSWMSB(panel->hsw) |
LCD_VERMSB(panel->vactive) |
LCD_INVMASK(panel->pol) |
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 |
LCD_PALMODE_RAWDATA |
LCD_TFT_MODE |
LCD_RASTER_ENABLE;
gd->fb_base += 0x20; /* point fb behind palette */
/* turn ON display through powercontrol function if accessible */
if (0 != panel->panel_power_ctrl) {
mdelay(panel->pon_delay);
panel->panel_power_ctrl(1);
}
return 0;
}
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;
}
if (0 == panel) {
printf("ERROR: missing ptr to am335x_lcdpanel!\n");
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);
debug("vfp=%d,vbp=%d,vsw=%d / clk-div=%d)\n",
panel->vfp, panel->vfp, panel->vsw, panel->pxl_clk_div);
debug("using frambuffer at 0x%08x with size %d.\n",
(unsigned int)gd->fb_base, FBSIZE(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)
panel->panel_power_ctrl(1);
debug("am335x-fb: wait for stable power ...\n");
mdelay(panel->pup_delay);
lcdhw->clkc_enable = LCD_CORECLKEN | LCD_LIDDCLKEN | LCD_DMACLKEN;
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);
lcdhw->lcddma_fb1_base = gd->fb_base;
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) |
LCD_HORMSB(panel->hactive) |
LCD_HFPLSB(panel->hfp) |
LCD_HBPLSB(panel->hbp) |
LCD_HSWLSB(panel->hsw);
lcdhw->raster_timing1 = LCD_VBP(panel->vbp) |
LCD_VFP(panel->vfp) |
LCD_VSW(panel->vsw) |
LCD_VERLSB(panel->vactive);
lcdhw->raster_timing2 = LCD_HSWMSB(panel->hsw) |
LCD_VERMSB(panel->vactive) |
LCD_INVMASK(panel->pol) |
LCD_HBPMSB(panel->hbp) |
LCD_HFPMSB(panel->hfp) |
0x0000FF00; /* clk cycles for ac-bias */
lcdhw->raster_ctrl = raster_ctrl |
LCD_PALMODE_RAWDATA |
LCD_TFT_MODE |
LCD_RASTER_ENABLE;
debug("am335x-fb: waiting picture to be stable.\n.");
mdelay(panel->pon_delay);
return 0;
}