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-rw-r--r--arch/arm/mach-pxa/e800_lcd.c159
1 files changed, 159 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/e800_lcd.c b/arch/arm/mach-pxa/e800_lcd.c
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1/* e800_lcd.c
2 *
3 * This file contains the definitions for the LCD timings and functions
4 * to control the LCD power / frontlighting via the w100fb driver.
5 *
6 * (c) 2005 Ian Molton <spyro@f2s.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 */
13
14#include <linux/module.h>
15#include <linux/device.h>
16#include <linux/fb.h>
17#include <linux/err.h>
18#include <linux/platform_device.h>
19
20#include <asm/mach-types.h>
21
22#include <video/w100fb.h>
23
24static struct w100_gen_regs e800_lcd_regs = {
25 .lcd_format = 0x00008003,
26 .lcdd_cntl1 = 0x02a00000,
27 .lcdd_cntl2 = 0x0003ffff,
28 .genlcd_cntl1 = 0x000ff2a3,
29 .genlcd_cntl2 = 0x000002a3,
30 .genlcd_cntl3 = 0x000102aa,
31};
32
33static struct w100_mode e800_lcd_mode[2] = {
34 [0] = {
35 .xres = 480,
36 .yres = 640,
37 .left_margin = 52,
38 .right_margin = 148,
39 .upper_margin = 2,
40 .lower_margin = 6,
41 .crtc_ss = 0x80350034,
42 .crtc_ls = 0x802b0026,
43 .crtc_gs = 0x80160016,
44 .crtc_vpos_gs = 0x00020003,
45 .crtc_rev = 0x0040001d,
46 .crtc_dclk = 0xe0000000,
47 .crtc_gclk = 0x82a50049,
48 .crtc_goe = 0x80ee001c,
49 .crtc_ps1_active = 0x00000000,
50 .pll_freq = 128,
51 .pixclk_divider = 4,
52 .pixclk_divider_rotated = 6,
53 .pixclk_src = CLK_SRC_PLL,
54 .sysclk_divider = 0,
55 .sysclk_src = CLK_SRC_PLL,
56 },
57 [1] = {
58 .xres = 240,
59 .yres = 320,
60 .left_margin = 15,
61 .right_margin = 88,
62 .upper_margin = 0,
63 .lower_margin = 7,
64 .crtc_ss = 0xd010000f,
65 .crtc_ls = 0x80070003,
66 .crtc_gs = 0x80000000,
67 .crtc_vpos_gs = 0x01460147,
68 .crtc_rev = 0x00400003,
69 .crtc_dclk = 0xa1700030,
70 .crtc_gclk = 0x814b0008,
71 .crtc_goe = 0x80cc0015,
72 .crtc_ps1_active = 0x00000000,
73 .pll_freq = 100,
74 .pixclk_divider = 6, /* Wince uses 14 which gives a 7MHz pclk. */
75 .pixclk_divider_rotated = 6, /* we want a 14MHz one (much nicer to look at) */
76 .pixclk_src = CLK_SRC_PLL,
77 .sysclk_divider = 0,
78 .sysclk_src = CLK_SRC_PLL,
79 }
80};
81
82
83static struct w100_gpio_regs e800_w100_gpio_info = {
84 .init_data1 = 0xc13fc019,
85 .gpio_dir1 = 0x3e40df7f,
86 .gpio_oe1 = 0x003c3000,
87 .init_data2 = 0x00000000,
88 .gpio_dir2 = 0x00000000,
89 .gpio_oe2 = 0x00000000,
90};
91
92static struct w100_mem_info e800_w100_mem_info = {
93 .ext_cntl = 0x09640011,
94 .sdram_mode_reg = 0x00600021,
95 .ext_timing_cntl = 0x10001545,
96 .io_cntl = 0x7ddd7333,
97 .size = 0x1fffff,
98};
99
100static void e800_tg_change(struct w100fb_par *par)
101{
102 unsigned long tmp;
103
104 tmp = w100fb_gpio_read(W100_GPIO_PORT_A);
105 if (par->mode->xres == 480)
106 tmp |= 0x100;
107 else
108 tmp &= ~0x100;
109 w100fb_gpio_write(W100_GPIO_PORT_A, tmp);
110}
111
112static struct w100_tg_info e800_tg_info = {
113 .change = e800_tg_change,
114};
115
116static struct w100fb_mach_info e800_fb_info = {
117 .modelist = e800_lcd_mode,
118 .num_modes = 2,
119 .regs = &e800_lcd_regs,
120 .gpio = &e800_w100_gpio_info,
121 .mem = &e800_w100_mem_info,
122 .tg = &e800_tg_info,
123 .xtal_freq = 16000000,
124};
125
126static struct resource e800_fb_resources[] = {
127 [0] = {
128 .start = 0x0c000000,
129 .end = 0x0cffffff,
130 .flags = IORESOURCE_MEM,
131 },
132};
133
134/* ----------------------- device declarations -------------------------- */
135
136
137static struct platform_device e800_fb_device = {
138 .name = "w100fb",
139 .id = -1,
140 .dev = {
141 .platform_data = &e800_fb_info,
142 },
143 .num_resources = ARRAY_SIZE(e800_fb_resources),
144 .resource = e800_fb_resources,
145};
146
147static int e800_lcd_init(void)
148{
149 if (!machine_is_e800())
150 return -ENODEV;
151
152 return platform_device_register(&e800_fb_device);
153}
154
155module_init(e800_lcd_init);
156
157MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
158MODULE_DESCRIPTION("e800 lcd driver");
159MODULE_LICENSE("GPLv2");