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/*
* Copyright 2008 Freescale Semiconductor, Inc.
* York Sun <yorksun@freescale.com>
*
* FSL DIU Framebuffer driver
*
* 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
*/
#include <common.h>
#include <command.h>
#include <asm/io.h>
#include "../../../../board/freescale/common/fsl_diu_fb.h"
#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
#include <stdio_dev.h>
#include <video_fb.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
static int xres, yres;
void diu_set_pixel_clock(unsigned int pixclock)
{
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
volatile clk512x_t *clk = &immap->clk;
volatile unsigned int *clkdvdr = &clk->scfr[0];
unsigned long speed_ccb, temp, pixval;
speed_ccb = get_bus_freq(0) * 4;
temp = 1000000000/pixclock;
temp *= 1000;
pixval = speed_ccb / temp;
debug("DIU pixval = %lu\n", pixval);
/* Modify PXCLK in GUTS CLKDVDR */
debug("DIU: Current value of CLKDVDR = 0x%08x\n", in_be32(clkdvdr));
temp = in_be32(clkdvdr) & 0xFFFFFF00;
out_be32(clkdvdr, temp | (pixval & 0xFF));
debug("DIU: Modified value of CLKDVDR = 0x%08x\n", in_be32(clkdvdr));
}
int mpc5121_diu_init(void)
{
unsigned int pixel_format;
#if defined(CONFIG_VIDEO_XRES) & defined(CONFIG_VIDEO_YRES)
xres = CONFIG_VIDEO_XRES;
yres = CONFIG_VIDEO_YRES;
#else
xres = 1024;
yres = 768;
#endif
pixel_format = 0x88883316;
debug("mpc5121_diu_init\n");
return fsl_diu_init(xres, pixel_format, 0);
}
#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
/*
* The Graphic Device
*/
GraphicDevice ctfb;
void *video_hw_init(void)
{
GraphicDevice *pGD = (GraphicDevice *) &ctfb;
struct fb_info *info;
if (mpc5121_diu_init() < 0)
return NULL;
/* fill in Graphic device struct */
sprintf(pGD->modeIdent, "%dx%dx%d %dkHz %dHz",
xres, yres, 32, 64, 60);
pGD->frameAdrs = (unsigned int)fsl_fb_open(&info);
pGD->winSizeX = xres;
pGD->winSizeY = yres;
pGD->plnSizeX = pGD->winSizeX;
pGD->plnSizeY = pGD->winSizeY;
pGD->gdfBytesPP = 4;
pGD->gdfIndex = GDF_32BIT_X888RGB;
pGD->isaBase = 0;
pGD->pciBase = 0;
pGD->memSize = info->screen_size;
/* Cursor Start Address */
pGD->dprBase = 0;
pGD->vprBase = 0;
pGD->cprBase = 0;
return (void *)pGD;
}
#endif /* defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) */
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