Merge remote-tracking branch 's5p/for-next'
[linux-2.6/next.git] / arch / arm / mach-s3c64xx / mach-hmt.c
blobb3d93cc8dde0ebd5d719dd3bb4656f5b43879fde
1 /* mach-hmt.c - Platform code for Airgoo HMT
3 * Copyright 2009 Peter Korsgaard <jacmet@sunsite.dk>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 */
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/serial_core.h>
14 #include <linux/platform_device.h>
15 #include <linux/io.h>
16 #include <linux/i2c.h>
17 #include <linux/fb.h>
18 #include <linux/gpio.h>
19 #include <linux/delay.h>
20 #include <linux/leds.h>
21 #include <linux/pwm_backlight.h>
22 #include <linux/mtd/mtd.h>
23 #include <linux/mtd/partitions.h>
25 #include <asm/mach/arch.h>
26 #include <asm/mach/map.h>
27 #include <asm/mach/irq.h>
29 #include <mach/hardware.h>
30 #include <mach/map.h>
32 #include <asm/irq.h>
33 #include <asm/mach-types.h>
35 #include <plat/regs-serial.h>
36 #include <plat/iic.h>
37 #include <plat/fb.h>
38 #include <plat/nand.h>
40 #include <mach/s3c6410.h>
41 #include <plat/clock.h>
42 #include <plat/devs.h>
43 #include <plat/cpu.h>
44 #include <plat/regs-fb-v4.h>
46 #define UCON S3C2410_UCON_DEFAULT
47 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
48 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
50 static struct s3c2410_uartcfg hmt_uartcfgs[] __initdata = {
51 [0] = {
52 .hwport = 0,
53 .flags = 0,
54 .ucon = UCON,
55 .ulcon = ULCON,
56 .ufcon = UFCON,
58 [1] = {
59 .hwport = 1,
60 .flags = 0,
61 .ucon = UCON,
62 .ulcon = ULCON,
63 .ufcon = UFCON,
65 [2] = {
66 .hwport = 2,
67 .flags = 0,
68 .ucon = UCON,
69 .ulcon = ULCON,
70 .ufcon = UFCON,
74 static int hmt_bl_init(struct device *dev)
76 int ret;
78 ret = gpio_request(S3C64XX_GPB(4), "lcd backlight enable");
79 if (!ret)
80 ret = gpio_direction_output(S3C64XX_GPB(4), 0);
82 return ret;
85 static int hmt_bl_notify(struct device *dev, int brightness)
88 * translate from CIELUV/CIELAB L*->brightness, E.G. from
89 * perceived luminance to light output. Assumes range 0..25600
91 if (brightness < 0x800) {
92 /* Y = Yn * L / 903.3 */
93 brightness = (100*256 * brightness + 231245/2) / 231245;
94 } else {
95 /* Y = Yn * ((L + 16) / 116 )^3 */
96 int t = (brightness*4 + 16*1024 + 58)/116;
97 brightness = 25 * ((t * t * t + 0x100000/2) / 0x100000);
100 gpio_set_value(S3C64XX_GPB(4), brightness);
102 return brightness;
105 static void hmt_bl_exit(struct device *dev)
107 gpio_free(S3C64XX_GPB(4));
110 static struct platform_pwm_backlight_data hmt_backlight_data = {
111 .pwm_id = 1,
112 .max_brightness = 100 * 256,
113 .dft_brightness = 40 * 256,
114 .pwm_period_ns = 1000000000 / (100 * 256 * 20),
115 .init = hmt_bl_init,
116 .notify = hmt_bl_notify,
117 .exit = hmt_bl_exit,
121 static struct platform_device hmt_backlight_device = {
122 .name = "pwm-backlight",
123 .dev = {
124 .parent = &s3c_device_timer[1].dev,
125 .platform_data = &hmt_backlight_data,
129 static struct s3c_fb_pd_win hmt_fb_win0 = {
130 .win_mode = {
131 .left_margin = 8,
132 .right_margin = 13,
133 .upper_margin = 7,
134 .lower_margin = 5,
135 .hsync_len = 3,
136 .vsync_len = 1,
137 .xres = 800,
138 .yres = 480,
140 .max_bpp = 32,
141 .default_bpp = 16,
144 /* 405566 clocks per frame => 60Hz refresh requires 24333960Hz clock */
145 static struct s3c_fb_platdata hmt_lcd_pdata __initdata = {
146 .setup_gpio = s3c64xx_fb_gpio_setup_24bpp,
147 .win[0] = &hmt_fb_win0,
148 .vidcon0 = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
149 .vidcon1 = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
152 static struct mtd_partition hmt_nand_part[] = {
153 [0] = {
154 .name = "uboot",
155 .size = SZ_512K,
156 .offset = 0,
158 [1] = {
159 .name = "uboot-env1",
160 .size = SZ_256K,
161 .offset = SZ_512K,
163 [2] = {
164 .name = "uboot-env2",
165 .size = SZ_256K,
166 .offset = SZ_512K + SZ_256K,
168 [3] = {
169 .name = "kernel",
170 .size = SZ_2M,
171 .offset = SZ_1M,
173 [4] = {
174 .name = "rootfs",
175 .size = MTDPART_SIZ_FULL,
176 .offset = SZ_1M + SZ_2M,
180 static struct s3c2410_nand_set hmt_nand_sets[] = {
181 [0] = {
182 .name = "nand",
183 .nr_chips = 1,
184 .nr_partitions = ARRAY_SIZE(hmt_nand_part),
185 .partitions = hmt_nand_part,
189 static struct s3c2410_platform_nand hmt_nand_info = {
190 .tacls = 25,
191 .twrph0 = 55,
192 .twrph1 = 40,
193 .nr_sets = ARRAY_SIZE(hmt_nand_sets),
194 .sets = hmt_nand_sets,
197 static struct gpio_led hmt_leds[] = {
198 { /* left function keys */
199 .name = "left:blue",
200 .gpio = S3C64XX_GPO(12),
201 .default_trigger = "default-on",
203 { /* right function keys - red */
204 .name = "right:red",
205 .gpio = S3C64XX_GPO(13),
207 { /* right function keys - green */
208 .name = "right:green",
209 .gpio = S3C64XX_GPO(14),
211 { /* right function keys - blue */
212 .name = "right:blue",
213 .gpio = S3C64XX_GPO(15),
214 .default_trigger = "default-on",
218 static struct gpio_led_platform_data hmt_led_data = {
219 .num_leds = ARRAY_SIZE(hmt_leds),
220 .leds = hmt_leds,
223 static struct platform_device hmt_leds_device = {
224 .name = "leds-gpio",
225 .id = -1,
226 .dev.platform_data = &hmt_led_data,
229 static struct map_desc hmt_iodesc[] = {};
231 static struct platform_device *hmt_devices[] __initdata = {
232 &s3c_device_i2c0,
233 &s3c_device_nand,
234 &s3c_device_fb,
235 &s3c_device_ohci,
236 &s3c_device_timer[1],
237 &hmt_backlight_device,
238 &hmt_leds_device,
241 static void __init hmt_map_io(void)
243 s3c64xx_init_io(hmt_iodesc, ARRAY_SIZE(hmt_iodesc));
244 s3c24xx_init_clocks(12000000);
245 s3c24xx_init_uarts(hmt_uartcfgs, ARRAY_SIZE(hmt_uartcfgs));
248 static void __init hmt_machine_init(void)
250 s3c_i2c0_set_platdata(NULL);
251 s3c_fb_set_platdata(&hmt_lcd_pdata);
252 s3c_nand_set_platdata(&hmt_nand_info);
254 gpio_request(S3C64XX_GPC(7), "usb power");
255 gpio_direction_output(S3C64XX_GPC(7), 0);
256 gpio_request(S3C64XX_GPM(0), "usb power");
257 gpio_direction_output(S3C64XX_GPM(0), 1);
258 gpio_request(S3C64XX_GPK(7), "usb power");
259 gpio_direction_output(S3C64XX_GPK(7), 1);
260 gpio_request(S3C64XX_GPF(13), "usb power");
261 gpio_direction_output(S3C64XX_GPF(13), 1);
263 platform_add_devices(hmt_devices, ARRAY_SIZE(hmt_devices));
266 MACHINE_START(HMT, "Airgoo-HMT")
267 /* Maintainer: Peter Korsgaard <jacmet@sunsite.dk> */
268 .boot_params = S3C64XX_PA_SDRAM + 0x100,
269 .init_irq = s3c6410_init_irq,
270 .map_io = hmt_map_io,
271 .init_machine = hmt_machine_init,
272 .timer = &s3c24xx_timer,
273 MACHINE_END