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2896bda4 PK |
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> | |
2896bda4 PK |
30 | #include <mach/map.h> |
31 | ||
32 | #include <asm/irq.h> | |
33 | #include <asm/mach-types.h> | |
34 | ||
35 | #include <plat/regs-serial.h> | |
36 | #include <plat/iic.h> | |
37 | #include <plat/fb.h> | |
38 | #include <plat/nand.h> | |
39 | ||
2896bda4 PK |
40 | #include <plat/clock.h> |
41 | #include <plat/devs.h> | |
42 | #include <plat/cpu.h> | |
49965e65 | 43 | #include <plat/regs-fb-v4.h> |
2896bda4 | 44 | |
b024043b KK |
45 | #include "common.h" |
46 | ||
2896bda4 PK |
47 | #define UCON S3C2410_UCON_DEFAULT |
48 | #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE) | |
49 | #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE) | |
50 | ||
51 | static struct s3c2410_uartcfg hmt_uartcfgs[] __initdata = { | |
52 | [0] = { | |
53 | .hwport = 0, | |
54 | .flags = 0, | |
55 | .ucon = UCON, | |
56 | .ulcon = ULCON, | |
57 | .ufcon = UFCON, | |
58 | }, | |
59 | [1] = { | |
60 | .hwport = 1, | |
61 | .flags = 0, | |
62 | .ucon = UCON, | |
63 | .ulcon = ULCON, | |
64 | .ufcon = UFCON, | |
65 | }, | |
66 | [2] = { | |
67 | .hwport = 2, | |
68 | .flags = 0, | |
69 | .ucon = UCON, | |
70 | .ulcon = ULCON, | |
71 | .ufcon = UFCON, | |
72 | }, | |
73 | }; | |
74 | ||
75 | static int hmt_bl_init(struct device *dev) | |
76 | { | |
77 | int ret; | |
78 | ||
79 | ret = gpio_request(S3C64XX_GPB(4), "lcd backlight enable"); | |
80 | if (!ret) | |
81 | ret = gpio_direction_output(S3C64XX_GPB(4), 0); | |
82 | ||
83 | return ret; | |
84 | } | |
85 | ||
1619ce11 | 86 | static int hmt_bl_notify(struct device *dev, int brightness) |
2896bda4 PK |
87 | { |
88 | /* | |
89 | * translate from CIELUV/CIELAB L*->brightness, E.G. from | |
90 | * perceived luminance to light output. Assumes range 0..25600 | |
91 | */ | |
92 | if (brightness < 0x800) { | |
93 | /* Y = Yn * L / 903.3 */ | |
94 | brightness = (100*256 * brightness + 231245/2) / 231245; | |
95 | } else { | |
96 | /* Y = Yn * ((L + 16) / 116 )^3 */ | |
97 | int t = (brightness*4 + 16*1024 + 58)/116; | |
98 | brightness = 25 * ((t * t * t + 0x100000/2) / 0x100000); | |
99 | } | |
100 | ||
101 | gpio_set_value(S3C64XX_GPB(4), brightness); | |
102 | ||
103 | return brightness; | |
104 | } | |
105 | ||
106 | static void hmt_bl_exit(struct device *dev) | |
107 | { | |
108 | gpio_free(S3C64XX_GPB(4)); | |
109 | } | |
110 | ||
111 | static struct platform_pwm_backlight_data hmt_backlight_data = { | |
112 | .pwm_id = 1, | |
113 | .max_brightness = 100 * 256, | |
114 | .dft_brightness = 40 * 256, | |
115 | .pwm_period_ns = 1000000000 / (100 * 256 * 20), | |
116 | .init = hmt_bl_init, | |
117 | .notify = hmt_bl_notify, | |
118 | .exit = hmt_bl_exit, | |
119 | ||
120 | }; | |
121 | ||
122 | static struct platform_device hmt_backlight_device = { | |
123 | .name = "pwm-backlight", | |
124 | .dev = { | |
125 | .parent = &s3c_device_timer[1].dev, | |
126 | .platform_data = &hmt_backlight_data, | |
127 | }, | |
128 | }; | |
129 | ||
130 | static struct s3c_fb_pd_win hmt_fb_win0 = { | |
131 | .win_mode = { | |
2896bda4 PK |
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, | |
b813248c | 236 | &s3c_device_ohci, |
2896bda4 PK |
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); | |
2a3a1804 | 253 | s3c_nand_set_platdata(&hmt_nand_info); |
2896bda4 PK |
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> */ | |
170a5908 | 269 | .atag_offset = 0x100, |
2896bda4 PK |
270 | .init_irq = s3c6410_init_irq, |
271 | .map_io = hmt_map_io, | |
272 | .init_machine = hmt_machine_init, | |
273 | .timer = &s3c24xx_timer, | |
274 | MACHINE_END |