dev_lcd_s3c2410.c

这是Skyeye 0.9 版本的源代码

/*
	dev_lcd_s3c2410.c - skyeye SAMSUNG s3c2410 lcd controllor simulation
	Copyright (C) 2003 - 2005 Skyeye Develop Group
	for help please send mail to <[e-mail]>
	
	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 
 
*/
/*
 * 06/17/2005   initial verion for s3c2410
 */

#include <armdefs.h>
#include "skyeye_device.h"
#include "dev_lcd_s3c2410.h"

static struct device_default_value s3c2410_lcd_def[] = {
  /* name         base        size   interrupt array */
  {"s3c2410x", 0x4d000000, 0x60, {0, 0, 0, 0}},
  {"s3c2440", 0x4d000000, 0x60, {0, 0, 0, 0}},
  {NULL},
};



static void
s3c2410_changed (struct device_desc *dev)
{
  struct lcd_device *lcd_dev = (struct lcd_device *) dev->dev;
  struct lcd_s3c2410_io *io = (struct lcd_s3c2410_io *) dev->data;
  struct machine_config *mc = (struct machine_config *) dev->mach;
  int bppmode = ((io->lcdcon1 >> 1) & 0xF);
  int depth = 16;

  lcd_dev->state = mc->state;

  lcd_dev->lcd_close (lcd_dev);

  /*
     if ((bppmode <= 4)) {
     if (bppmode == 4)
     depth = 12;
     else
     depth = 2^bppmode;
     } else {
     if (bppmode == 0xd)
     depth = 24;
     else
     depth = 2^(bppmode - 8);
     }
   */

  //printf("lcdsaddr1:%x\n", io->lcdsaddr1<<1);

  /* we here use lcdsaddr1 as lcd_addr_begin */
  lcd_dev->lcd_addr_begin = io->lcdsaddr1 << 1;
  lcd_dev->depth = depth;
  lcd_dev->height = ((io->lcdcon2 >> 14) & 0x3ff) + 1;
  lcd_dev->width = ((io->lcdcon3 >> 8) & 0x7ff) + 1;
  lcd_dev->lcd_open (lcd_dev);
}

static void
lcd_s3c2410_fini (struct device_desc *dev)
{
  struct lcd_s3c2410_io *io = (struct lcd_s3c2410_io *) dev->data;
  if (!dev->dev)
    free (dev->dev);
  if (!io)
    free (io);
}

static void
lcd_s3c2410_reset (struct device_desc *dev)
{
  struct lcd_device *lcd_dev = (struct lcd_device *) dev->dev;
  struct lcd_s3c2410_io *io = (struct lcd_s3c2410_io *) dev->data;

  //lcd_dev->lcd_addr_begin = 0xc0141000;
  //lcd_dev->lcd_addr_end = 0xc0141000;
}

static void
lcd_s3c2410_update (struct device_desc *dev)
{
  struct device_interrupt *intr = &dev->intr;
  struct lcd_device *lcd_dev = (struct lcd_device *) dev->dev;
  struct lcd_s3c2410_io *io = (struct lcd_s3c2410_io *) dev->data;
  struct machine_config *mc = (struct machine_config *) dev->mach;

  lcd_dev->lcd_update (lcd_dev);

}


int
lcd_s3c2410_read_word (struct device_desc *dev, u32 addr, u32 * data)
{
  struct lcd_device *lcd_dev = (struct lcd_device *) dev->dev;
  struct lcd_s3c2410_io *io = (struct lcd_s3c2410_io *) dev->data;

  int offset = (addr - dev->base);
  int ret = ADDR_HIT;

  //printf("%s:addr %x, %x\n", __FUNCTION__, addr, MACON);
  *data = 0;
  switch (offset)
    {
    case LCDCON1:
      *data = io->lcdcon1;
      break;
    case LCDCON2:
      *data = io->lcdcon2;
      break;
    case LCDCON3:
      *data = io->lcdcon3;
      break;
    case LCDCON4:
      *data = io->lcdcon4;
      break;
    case LCDCON5:
      *data = io->lcdcon5;
      break;
    default:
      break;
    }
  return ret;

}

int
lcd_s3c2410_write_word (struct device_desc *dev, u32 addr, u32 data)
{
  struct lcd_device *lcd_dev = (struct lcd_device *) dev->dev;
  struct lcd_s3c2410_io *io = (struct lcd_s3c2410_io *) dev->data;

  int offset = (addr - dev->base);
  int ret = ADDR_HIT;

  //printf("%s:mach:%x\n", __FUNCTION__, dev->mach);
  switch (offset)
    {
    case LCDCON1:
      if ((io->lcdcon1 != data) && (data & 0x1))
	{
	  io->lcdcon1 = data;
	  s3c2410_changed (dev);
	}
      break;
    case LCDCON2:
      io->lcdcon2 = data;
      break;
    case LCDCON3:
      io->lcdcon3 = data;
      break;
    case LCDCON4:
      io->lcdcon4 = data;
      break;
    case LCDCON5:
      io->lcdcon5 = data;
      break;
    case LCDSADDR1:
      io->lcdsaddr1 = data;
      break;
    case LCDSADDR2:
      io->lcdsaddr2 = data;
      break;
    case LCDSADDR3:
      io->lcdsaddr3 = data;
      break;
    default:
      ret = ADDR_NOHIT;
      break;
    }

  return ret;
}

static int
lcd_s3c2410_setup (struct device_desc *dev)
{
  int i;
  struct lcd_s3c2410_io *io;
  struct device_interrupt *intr = &dev->intr;

  dev->fini = lcd_s3c2410_fini;
  dev->reset = lcd_s3c2410_reset;
  dev->update = lcd_s3c2410_update;
  dev->read_word = lcd_s3c2410_read_word;
  dev->write_word = lcd_s3c2410_write_word;

  io = (struct lcd_s3c2410_io *) malloc (sizeof (struct lcd_s3c2410_io));
  memset (io, 0, sizeof (struct lcd_s3c2410_io));
  if (io == NULL)
    return 1;
  dev->data = (void *) io;

  lcd_s3c2410_reset (dev);


  /* see if we need to set default values.
   * */
  set_device_default (dev, s3c2410_lcd_def);


  return 0;
}

void
lcd_s3c2410_init (struct device_module_set *mod_set)
{
  int i;
  register_device_module ("s3c2410x", mod_set, &lcd_s3c2410_setup);

}