Esempio n. 1
0
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;
}
Esempio n. 2
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;
}