text: /*
   * 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 <fsl_diu_fb.h>
  
  DECLARE_GLOBAL_DATA_PTR;
  
  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 platform_diu_init(unsigned int xres, unsigned int yres, const char *port)
  {
  	unsigned int pixel_format = 0x88883316;
  
  	debug("mpc5121_diu_init\n");
  	return fsl_diu_init(xres, yres, pixel_format, 0);
  }
  