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e800_lcd.c

/* e800_lcd.c
 *
 * This file contains the definitions for the LCD timings and functions
 * to control the LCD power / frontlighting via the w100fb driver.
 *
 * (c) 2005 Ian Molton <spyro@f2s.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#include <linux/module.h>
#include <linux/device.h>
#include <linux/fb.h>
#include <linux/err.h>
#include <linux/platform_device.h>

#include <asm/mach-types.h>

#include <video/w100fb.h>

static struct w100_gen_regs e800_lcd_regs = {
      .lcd_format =            0x00008003,
      .lcdd_cntl1 =            0x02a00000,
      .lcdd_cntl2 =            0x0003ffff,
      .genlcd_cntl1 =          0x000ff2a3,
      .genlcd_cntl2 =          0x000002a3,
      .genlcd_cntl3 =          0x000102aa,
};

static struct w100_mode e800_lcd_mode[2] = {
      [0] = {
            .xres            = 480,
            .yres            = 640,
            .left_margin     = 52,
            .right_margin    = 148,
            .upper_margin    = 2,
            .lower_margin    = 6,
            .crtc_ss         = 0x80350034,
            .crtc_ls         = 0x802b0026,
            .crtc_gs         = 0x80160016,
            .crtc_vpos_gs    = 0x00020003,
            .crtc_rev        = 0x0040001d,
            .crtc_dclk       = 0xe0000000,
            .crtc_gclk       = 0x82a50049,
            .crtc_goe        = 0x80ee001c,
            .crtc_ps1_active = 0x00000000,
            .pll_freq        = 128,
            .pixclk_divider         = 4,
            .pixclk_divider_rotated = 6,
            .pixclk_src     = CLK_SRC_PLL,
            .sysclk_divider  = 0,
            .sysclk_src     = CLK_SRC_PLL,
      },
      [1] = {
            .xres            = 240,
            .yres            = 320,
            .left_margin     = 15,
            .right_margin    = 88,
            .upper_margin    = 0,
            .lower_margin    = 7,
            .crtc_ss         = 0xd010000f,
            .crtc_ls         = 0x80070003,
            .crtc_gs         = 0x80000000,
            .crtc_vpos_gs    = 0x01460147,
            .crtc_rev        = 0x00400003,
            .crtc_dclk       = 0xa1700030,
            .crtc_gclk       = 0x814b0008,
            .crtc_goe        = 0x80cc0015,
            .crtc_ps1_active = 0x00000000,
            .pll_freq        = 100,
            .pixclk_divider         = 6, /* Wince uses 14 which gives a 7MHz pclk. */
            .pixclk_divider_rotated = 6, /* we want a 14MHz one (much nicer to look at) */
            .pixclk_src     = CLK_SRC_PLL,
            .sysclk_divider  = 0,
            .sysclk_src     = CLK_SRC_PLL,
      }
};


static struct w100_gpio_regs e800_w100_gpio_info = {
      .init_data1 = 0xc13fc019,
      .gpio_dir1  = 0x3e40df7f,
      .gpio_oe1   = 0x003c3000,
      .init_data2 = 0x00000000,
      .gpio_dir2  = 0x00000000,
      .gpio_oe2   = 0x00000000,
};

static struct w100_mem_info e800_w100_mem_info = {
      .ext_cntl        = 0x09640011,
      .sdram_mode_reg  = 0x00600021,
      .ext_timing_cntl = 0x10001545,
      .io_cntl         = 0x7ddd7333,
      .size            = 0x1fffff,
};

static void e800_tg_change(struct w100fb_par *par)
{
      unsigned long tmp;

      tmp = w100fb_gpio_read(W100_GPIO_PORT_A);
      if (par->mode->xres == 480)
            tmp |= 0x100;
      else
            tmp &= ~0x100;
      w100fb_gpio_write(W100_GPIO_PORT_A, tmp);
}

static struct w100_tg_info e800_tg_info = {
      .change = e800_tg_change,
};

static struct w100fb_mach_info e800_fb_info = {
      .modelist   = e800_lcd_mode,
      .num_modes  = 2,
      .regs       = &e800_lcd_regs,
      .gpio       = &e800_w100_gpio_info,
      .mem        = &e800_w100_mem_info,
      .tg         = &e800_tg_info,
      .xtal_freq  = 16000000,
};

static struct resource e800_fb_resources[] = {
      [0] = {
            .start          = 0x0c000000,
            .end            = 0x0cffffff,
            .flags          = IORESOURCE_MEM,
      },
};

/* ----------------------- device declarations -------------------------- */


static struct platform_device e800_fb_device = {
      .name           = "w100fb",
      .id             = -1,
      .dev            = {
            .platform_data  = &e800_fb_info,
      },
      .num_resources  = ARRAY_SIZE(e800_fb_resources),
      .resource       = e800_fb_resources,
};

static int e800_lcd_init(void)
{
      if (!machine_is_e800())
            return -ENODEV;

      return platform_device_register(&e800_fb_device);
}

module_init(e800_lcd_init);

MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
MODULE_DESCRIPTION("e800 lcd driver");
MODULE_LICENSE("GPLv2");

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