160 lines
4.0 KiB
C
160 lines
4.0 KiB
C
/* e800_lcd.c
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*
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* This file contains the definitions for the LCD timings and functions
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* to control the LCD power / frontlighting via the w100fb driver.
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*
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* (c) 2005 Ian Molton <spyro@f2s.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/fb.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <asm/mach-types.h>
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#include <video/w100fb.h>
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static struct w100_gen_regs e800_lcd_regs = {
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.lcd_format = 0x00008003,
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.lcdd_cntl1 = 0x02a00000,
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.lcdd_cntl2 = 0x0003ffff,
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.genlcd_cntl1 = 0x000ff2a3,
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.genlcd_cntl2 = 0x000002a3,
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.genlcd_cntl3 = 0x000102aa,
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};
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static struct w100_mode e800_lcd_mode[2] = {
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[0] = {
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.xres = 480,
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.yres = 640,
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.left_margin = 52,
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.right_margin = 148,
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.upper_margin = 2,
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.lower_margin = 6,
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.crtc_ss = 0x80350034,
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.crtc_ls = 0x802b0026,
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.crtc_gs = 0x80160016,
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.crtc_vpos_gs = 0x00020003,
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.crtc_rev = 0x0040001d,
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.crtc_dclk = 0xe0000000,
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.crtc_gclk = 0x82a50049,
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.crtc_goe = 0x80ee001c,
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.crtc_ps1_active = 0x00000000,
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.pll_freq = 128,
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.pixclk_divider = 4,
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.pixclk_divider_rotated = 6,
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.pixclk_src = CLK_SRC_PLL,
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.sysclk_divider = 0,
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.sysclk_src = CLK_SRC_PLL,
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},
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[1] = {
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.xres = 240,
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.yres = 320,
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.left_margin = 15,
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.right_margin = 88,
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.upper_margin = 0,
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.lower_margin = 7,
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.crtc_ss = 0xd010000f,
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.crtc_ls = 0x80070003,
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.crtc_gs = 0x80000000,
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.crtc_vpos_gs = 0x01460147,
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.crtc_rev = 0x00400003,
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.crtc_dclk = 0xa1700030,
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.crtc_gclk = 0x814b0008,
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.crtc_goe = 0x80cc0015,
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.crtc_ps1_active = 0x00000000,
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.pll_freq = 100,
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.pixclk_divider = 6, /* Wince uses 14 which gives a 7MHz pclk. */
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.pixclk_divider_rotated = 6, /* we want a 14MHz one (much nicer to look at) */
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.pixclk_src = CLK_SRC_PLL,
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.sysclk_divider = 0,
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.sysclk_src = CLK_SRC_PLL,
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}
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};
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static struct w100_gpio_regs e800_w100_gpio_info = {
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.init_data1 = 0xc13fc019,
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.gpio_dir1 = 0x3e40df7f,
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.gpio_oe1 = 0x003c3000,
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.init_data2 = 0x00000000,
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.gpio_dir2 = 0x00000000,
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.gpio_oe2 = 0x00000000,
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};
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static struct w100_mem_info e800_w100_mem_info = {
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.ext_cntl = 0x09640011,
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.sdram_mode_reg = 0x00600021,
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.ext_timing_cntl = 0x10001545,
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.io_cntl = 0x7ddd7333,
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.size = 0x1fffff,
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};
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static void e800_tg_change(struct w100fb_par *par)
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{
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unsigned long tmp;
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tmp = w100fb_gpio_read(W100_GPIO_PORT_A);
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if (par->mode->xres == 480)
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tmp |= 0x100;
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else
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tmp &= ~0x100;
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w100fb_gpio_write(W100_GPIO_PORT_A, tmp);
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}
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static struct w100_tg_info e800_tg_info = {
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.change = e800_tg_change,
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};
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static struct w100fb_mach_info e800_fb_info = {
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.modelist = e800_lcd_mode,
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.num_modes = 2,
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.regs = &e800_lcd_regs,
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.gpio = &e800_w100_gpio_info,
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.mem = &e800_w100_mem_info,
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.tg = &e800_tg_info,
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.xtal_freq = 16000000,
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};
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static struct resource e800_fb_resources[] = {
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[0] = {
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.start = 0x0c000000,
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.end = 0x0cffffff,
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.flags = IORESOURCE_MEM,
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},
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};
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/* ----------------------- device declarations -------------------------- */
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static struct platform_device e800_fb_device = {
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.name = "w100fb",
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.id = -1,
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.dev = {
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.platform_data = &e800_fb_info,
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},
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.num_resources = ARRAY_SIZE(e800_fb_resources),
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.resource = e800_fb_resources,
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};
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static int e800_lcd_init(void)
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{
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if (!machine_is_e800())
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return -ENODEV;
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return platform_device_register(&e800_fb_device);
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}
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module_init(e800_lcd_init);
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MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
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MODULE_DESCRIPTION("e800 lcd driver");
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MODULE_LICENSE("GPLv2");
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