Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
[linux-2.6.git] / arch / arm / mach-s3c6410 / mach-hmt.c
1 /* mach-hmt.c - Platform code for Airgoo HMT
2  *
3  * Copyright 2009 Peter Korsgaard <jacmet@sunsite.dk>
4  *
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.
8  *
9 */
10
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>
24
25 #include <asm/mach/arch.h>
26 #include <asm/mach/map.h>
27 #include <asm/mach/irq.h>
28
29 #include <mach/hardware.h>
30 #include <mach/regs-fb.h>
31 #include <mach/map.h>
32
33 #include <asm/irq.h>
34 #include <asm/mach-types.h>
35
36 #include <plat/regs-serial.h>
37 #include <plat/iic.h>
38 #include <plat/fb.h>
39 #include <plat/nand.h>
40
41 #include <plat/s3c6410.h>
42 #include <plat/clock.h>
43 #include <plat/devs.h>
44 #include <plat/cpu.h>
45
46 #define UCON S3C2410_UCON_DEFAULT
47 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
48 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
49
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,
57         },
58         [1] = {
59                 .hwport      = 1,
60                 .flags       = 0,
61                 .ucon        = UCON,
62                 .ulcon       = ULCON,
63                 .ufcon       = UFCON,
64         },
65         [2] = {
66                 .hwport      = 2,
67                 .flags       = 0,
68                 .ucon        = UCON,
69                 .ulcon       = ULCON,
70                 .ufcon       = UFCON,
71         },
72 };
73
74 static int hmt_bl_init(struct device *dev)
75 {
76         int ret;
77
78         ret = gpio_request(S3C64XX_GPB(4), "lcd backlight enable");
79         if (!ret)
80                 ret = gpio_direction_output(S3C64XX_GPB(4), 0);
81
82         return ret;
83 }
84
85 static int hmt_bl_notify(int brightness)
86 {
87         /*
88          * translate from CIELUV/CIELAB L*->brightness, E.G. from
89          * perceived luminance to light output. Assumes range 0..25600
90          */
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);
98         }
99
100         gpio_set_value(S3C64XX_GPB(4), brightness);
101
102         return brightness;
103 }
104
105 static void hmt_bl_exit(struct device *dev)
106 {
107         gpio_free(S3C64XX_GPB(4));
108 }
109
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,
118
119 };
120
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,
126         },
127 };
128
129 static struct s3c_fb_pd_win hmt_fb_win0 = {
130         .win_mode       = {
131                 .pixclock       = 41094,
132                 .left_margin    = 8,
133                 .right_margin   = 13,
134                 .upper_margin   = 7,
135                 .lower_margin   = 5,
136                 .hsync_len      = 3,
137                 .vsync_len      = 1,
138                 .xres           = 800,
139                 .yres           = 480,
140         },
141         .max_bpp        = 32,
142         .default_bpp    = 16,
143 };
144
145 /* 405566 clocks per frame => 60Hz refresh requires 24333960Hz clock */
146 static struct s3c_fb_platdata hmt_lcd_pdata __initdata = {
147         .setup_gpio     = s3c64xx_fb_gpio_setup_24bpp,
148         .win[0]         = &hmt_fb_win0,
149         .vidcon0        = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
150         .vidcon1        = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
151 };
152
153 static struct mtd_partition hmt_nand_part[] = {
154         [0] = {
155                 .name   = "uboot",
156                 .size   = SZ_512K,
157                 .offset = 0,
158         },
159         [1] = {
160                 .name   = "uboot-env1",
161                 .size   = SZ_256K,
162                 .offset = SZ_512K,
163         },
164         [2] = {
165                 .name   = "uboot-env2",
166                 .size   = SZ_256K,
167                 .offset = SZ_512K + SZ_256K,
168         },
169         [3] = {
170                 .name   = "kernel",
171                 .size   = SZ_2M,
172                 .offset = SZ_1M,
173         },
174         [4] = {
175                 .name   = "rootfs",
176                 .size   = MTDPART_SIZ_FULL,
177                 .offset = SZ_1M + SZ_2M,
178         },
179 };
180
181 static struct s3c2410_nand_set hmt_nand_sets[] = {
182         [0] = {
183                 .name           = "nand",
184                 .nr_chips       = 1,
185                 .nr_partitions  = ARRAY_SIZE(hmt_nand_part),
186                 .partitions     = hmt_nand_part,
187         },
188 };
189
190 static struct s3c2410_platform_nand hmt_nand_info = {
191         .tacls          = 25,
192         .twrph0         = 55,
193         .twrph1         = 40,
194         .nr_sets        = ARRAY_SIZE(hmt_nand_sets),
195         .sets           = hmt_nand_sets,
196 };
197
198 static struct gpio_led hmt_leds[] = {
199         { /* left function keys */
200                 .name                   = "left:blue",
201                 .gpio                   = S3C64XX_GPO(12),
202                 .default_trigger        = "default-on",
203         },
204         { /* right function keys - red */
205                 .name                   = "right:red",
206                 .gpio                   = S3C64XX_GPO(13),
207         },
208         { /* right function keys - green */
209                 .name                   = "right:green",
210                 .gpio                   = S3C64XX_GPO(14),
211         },
212         { /* right function keys - blue */
213                 .name                   = "right:blue",
214                 .gpio                   = S3C64XX_GPO(15),
215                 .default_trigger        = "default-on",
216         },
217 };
218
219 static struct gpio_led_platform_data hmt_led_data = {
220         .num_leds = ARRAY_SIZE(hmt_leds),
221         .leds = hmt_leds,
222 };
223
224 static struct platform_device hmt_leds_device = {
225         .name                   = "leds-gpio",
226         .id                     = -1,
227         .dev.platform_data      = &hmt_led_data,
228 };
229
230 static struct map_desc hmt_iodesc[] = {};
231
232 static struct platform_device *hmt_devices[] __initdata = {
233         &s3c_device_i2c0,
234         &s3c_device_nand,
235         &s3c_device_fb,
236         &s3c_device_usb,
237         &s3c_device_timer[1],
238         &hmt_backlight_device,
239         &hmt_leds_device,
240 };
241
242 static void __init hmt_map_io(void)
243 {
244         s3c64xx_init_io(hmt_iodesc, ARRAY_SIZE(hmt_iodesc));
245         s3c24xx_init_clocks(12000000);
246         s3c24xx_init_uarts(hmt_uartcfgs, ARRAY_SIZE(hmt_uartcfgs));
247 }
248
249 static void __init hmt_machine_init(void)
250 {
251         s3c_i2c0_set_platdata(NULL);
252         s3c_fb_set_platdata(&hmt_lcd_pdata);
253         s3c_device_nand.dev.platform_data = &hmt_nand_info;
254
255         gpio_request(S3C64XX_GPC(7), "usb power");
256         gpio_direction_output(S3C64XX_GPC(7), 0);
257         gpio_request(S3C64XX_GPM(0), "usb power");
258         gpio_direction_output(S3C64XX_GPM(0), 1);
259         gpio_request(S3C64XX_GPK(7), "usb power");
260         gpio_direction_output(S3C64XX_GPK(7), 1);
261         gpio_request(S3C64XX_GPF(13), "usb power");
262         gpio_direction_output(S3C64XX_GPF(13), 1);
263
264         platform_add_devices(hmt_devices, ARRAY_SIZE(hmt_devices));
265 }
266
267 MACHINE_START(HMT, "Airgoo-HMT")
268         /* Maintainer: Peter Korsgaard <jacmet@sunsite.dk> */
269         .phys_io        = S3C_PA_UART & 0xfff00000,
270         .io_pg_offst    = (((u32)S3C_VA_UART) >> 18) & 0xfffc,
271         .boot_params    = S3C64XX_PA_SDRAM + 0x100,
272         .init_irq       = s3c6410_init_irq,
273         .map_io         = hmt_map_io,
274         .init_machine   = hmt_machine_init,
275         .timer          = &s3c24xx_timer,
276 MACHINE_END