video: add support for display controller in MB86R0x SoCs

This patch adds support for the display controller in
the MB86R0x SoCs.

Signed-off-by: Matthias Weisser <weisserm@arcor.de>
Acked-by: Anatolij Gustschin <agust@denx.de>

drivers/video/Makefile

@@ -32,6 +32,7 @@ COBJS-$(CONFIG_S6E63D6) += s6e63d6.o
 COBJS-$(CONFIG_VIDEO_AMBA) += amba.o
 COBJS-$(CONFIG_VIDEO_CT69000) += ct69000.o videomodes.o
 COBJS-$(CONFIG_VIDEO_MB862xx) += mb862xx.o videomodes.o
+COBJS-$(CONFIG_VIDEO_MB86R0xGDC) += mb86r0xgdc.o videomodes.o
 COBJS-$(CONFIG_VIDEO_MX3) += mx3fb.o
 COBJS-$(CONFIG_VIDEO_SED13806) += sed13806.o
 COBJS-$(CONFIG_SED156X) += sed156x.o

drivers/video/mb86r0xgdc.c

@@ -0,0 +1,186 @@
+/*
+ * (C) Copyright 2010
+ * Matthias Weisser <weisserm@arcor.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * mb86r0xgdc.c - Graphic interface for Fujitsu MB86R0x integrated graphic
+ * controller.
+ */
+
+#include <common.h>
+
+#include <malloc.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <video_fb.h>
+#include "videomodes.h"
+
+/*
+ * 4MB (at the end of system RAM)
+ */
+#define VIDEO_MEM_SIZE		0x400000
+
+#define FB_SYNC_CLK_INV		(1<<16)	/* pixel clock inverted */
+
+/*
+ * Graphic Device
+ */
+static GraphicDevice mb86r0x;
+
+static void dsp_init(struct mb86r0x_gdc_dsp *dsp, char *modestr,
+			u32 *videomem)
+{
+	struct ctfb_res_modes var_mode;
+	u32 dcm1, dcm2, dcm3;
+	u16 htp, hdp, hdb, hsp, vtr, vsp, vdp;
+	u8 hsw, vsw;
+	u32 l2m, l2em, l2oa0, l2da0, l2oa1, l2da1;
+	u16 l2dx, l2dy, l2wx, l2wy, l2ww, l2wh;
+	unsigned long div;
+	int bpp;
+	u32 i;
+
+	bpp = video_get_params(&var_mode, modestr);
+
+	if (bpp == 0) {
+		var_mode.xres = 640;
+		var_mode.yres = 480;
+		var_mode.pixclock = 39721;	/* 25MHz */
+		var_mode.left_margin = 48;
+		var_mode.right_margin = 16;
+		var_mode.upper_margin = 33;
+		var_mode.lower_margin = 10;
+		var_mode.hsync_len = 96;
+		var_mode.vsync_len = 2;
+		var_mode.sync = 0;
+		var_mode.vmode = 0;
+		bpp = 15;
+	}
+
+	/* Fill memory with white */
+	for (i = 0; i < var_mode.xres * var_mode.yres / 2; i++)
+		*videomem++ = 0xFFFFFFFF;
+
+	mb86r0x.winSizeX = var_mode.xres;
+	mb86r0x.winSizeY = var_mode.yres;
+
+	/* LCD base clock is ~ 660MHZ. We do calculations in kHz */
+	div = 660000 / (1000000000L / var_mode.pixclock);
+	if (div > 64)
+		div = 64;
+	if (0 == div)
+		div = 1;
+
+	dcm1 = (div - 1) << 8;
+	dcm2 = 0x00000000;
+	if (var_mode.sync & FB_SYNC_CLK_INV)
+		dcm3 = 0x00000100;
+	else
+		dcm3 = 0x00000000;
+
+	htp = var_mode.left_margin + var_mode.xres +
+		var_mode.hsync_len + var_mode.right_margin;
+	hdp = var_mode.xres;
+	hdb = var_mode.xres;
+	hsp = var_mode.xres + var_mode.right_margin;
+	hsw = var_mode.hsync_len;
+
+	vsw = var_mode.vsync_len;
+	vtr = var_mode.upper_margin + var_mode.yres +
+		var_mode.vsync_len + var_mode.lower_margin;
+	vsp = var_mode.yres + var_mode.lower_margin;
+	vdp = var_mode.yres;
+
+	l2m =	((var_mode.yres - 1) << (0)) |
+		(((var_mode.xres * 2) / 64) << (16)) |
+		((1) << (31));
+
+	l2em = (1 << 0) | (1 << 1);
+
+	l2oa0 = mb86r0x.frameAdrs;
+	l2da0 = mb86r0x.frameAdrs;
+	l2oa1 = mb86r0x.frameAdrs;
+	l2da1 = mb86r0x.frameAdrs;
+	l2dx = 0;
+	l2dy = 0;
+	l2wx = 0;
+	l2wy = 0;
+	l2ww = var_mode.xres;
+	l2wh = var_mode.yres - 1;
+
+	writel(dcm1, &dsp->dcm1);
+	writel(dcm2, &dsp->dcm2);
+	writel(dcm3, &dsp->dcm3);
+
+	writew(htp, &dsp->htp);
+	writew(hdp, &dsp->hdp);
+	writew(hdb, &dsp->hdb);
+	writew(hsp, &dsp->hsp);
+	writeb(hsw, &dsp->hsw);
+
+	writeb(vsw, &dsp->vsw);
+	writew(vtr, &dsp->vtr);
+	writew(vsp, &dsp->vsp);
+	writew(vdp, &dsp->vdp);
+
+	writel(l2m, &dsp->l2m);
+	writel(l2em, &dsp->l2em);
+	writel(l2oa0, &dsp->l2oa0);
+	writel(l2da0, &dsp->l2da0);
+	writel(l2oa1, &dsp->l2oa1);
+	writel(l2da1, &dsp->l2da1);
+	writew(l2dx, &dsp->l2dx);
+	writew(l2dy, &dsp->l2dy);
+	writew(l2wx, &dsp->l2wx);
+	writew(l2wy, &dsp->l2wy);
+	writew(l2ww, &dsp->l2ww);
+	writew(l2wh, &dsp->l2wh);
+
+	writel(dcm1 | (1 << 18) | (1 << 31), &dsp->dcm1);
+}
+
+void *video_hw_init(void)
+{
+	struct mb86r0x_gdc *gdc = (struct mb86r0x_gdc *) MB86R0x_GDC_BASE;
+	GraphicDevice *pGD = &mb86r0x;
+	char *s;
+	u32 *vid;
+
+	memset(pGD, 0, sizeof(GraphicDevice));
+
+	pGD->gdfIndex = GDF_15BIT_555RGB;
+	pGD->gdfBytesPP = 2;
+	pGD->memSize = VIDEO_MEM_SIZE;
+	pGD->frameAdrs = PHYS_SDRAM + PHYS_SDRAM_SIZE - VIDEO_MEM_SIZE;
+
+	vid = (u32 *)pGD->frameAdrs;
+
+	s = getenv("videomode");
+	if (s != NULL)
+		dsp_init(&gdc->dsp0, s, vid);
+
+	s = getenv("videomode1");
+	if (s != NULL)
+		dsp_init(&gdc->dsp1, s, vid);
+
+	return pGD;
+}