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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 | ||
3cd7b62b | 40 | #include <plat/s3c6410.h> |
2896bda4 PK |
41 | #include <plat/clock.h> |
42 | #include <plat/devs.h> | |
43 | #include <plat/cpu.h> | |
49965e65 | 44 | #include <plat/regs-fb-v4.h> |
2896bda4 PK |
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 | ||
1619ce11 | 85 | static int hmt_bl_notify(struct device *dev, int brightness) |
2896bda4 PK |
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 = { | |
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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, | |
139 | }, | |
140 | .max_bpp = 32, | |
141 | .default_bpp = 16, | |
142 | }; | |
143 | ||
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, | |
150 | }; | |
151 | ||
152 | static struct mtd_partition hmt_nand_part[] = { | |
153 | [0] = { | |
154 | .name = "uboot", | |
155 | .size = SZ_512K, | |
156 | .offset = 0, | |
157 | }, | |
158 | [1] = { | |
159 | .name = "uboot-env1", | |
160 | .size = SZ_256K, | |
161 | .offset = SZ_512K, | |
162 | }, | |
163 | [2] = { | |
164 | .name = "uboot-env2", | |
165 | .size = SZ_256K, | |
166 | .offset = SZ_512K + SZ_256K, | |
167 | }, | |
168 | [3] = { | |
169 | .name = "kernel", | |
170 | .size = SZ_2M, | |
171 | .offset = SZ_1M, | |
172 | }, | |
173 | [4] = { | |
174 | .name = "rootfs", | |
175 | .size = MTDPART_SIZ_FULL, | |
176 | .offset = SZ_1M + SZ_2M, | |
177 | }, | |
178 | }; | |
179 | ||
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, | |
186 | }, | |
187 | }; | |
188 | ||
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, | |
195 | }; | |
196 | ||
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", | |
202 | }, | |
203 | { /* right function keys - red */ | |
204 | .name = "right:red", | |
205 | .gpio = S3C64XX_GPO(13), | |
206 | }, | |
207 | { /* right function keys - green */ | |
208 | .name = "right:green", | |
209 | .gpio = S3C64XX_GPO(14), | |
210 | }, | |
211 | { /* right function keys - blue */ | |
212 | .name = "right:blue", | |
213 | .gpio = S3C64XX_GPO(15), | |
214 | .default_trigger = "default-on", | |
215 | }, | |
216 | }; | |
217 | ||
218 | static struct gpio_led_platform_data hmt_led_data = { | |
219 | .num_leds = ARRAY_SIZE(hmt_leds), | |
220 | .leds = hmt_leds, | |
221 | }; | |
222 | ||
223 | static struct platform_device hmt_leds_device = { | |
224 | .name = "leds-gpio", | |
225 | .id = -1, | |
226 | .dev.platform_data = &hmt_led_data, | |
227 | }; | |
228 | ||
229 | static struct map_desc hmt_iodesc[] = {}; | |
230 | ||
231 | static struct platform_device *hmt_devices[] __initdata = { | |
232 | &s3c_device_i2c0, | |
233 | &s3c_device_nand, | |
234 | &s3c_device_fb, | |
b813248c | 235 | &s3c_device_ohci, |
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236 | &s3c_device_timer[1], |
237 | &hmt_backlight_device, | |
238 | &hmt_leds_device, | |
239 | }; | |
240 | ||
241 | static void __init hmt_map_io(void) | |
242 | { | |
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)); | |
246 | } | |
247 | ||
248 | static void __init hmt_machine_init(void) | |
249 | { | |
250 | s3c_i2c0_set_platdata(NULL); | |
251 | s3c_fb_set_platdata(&hmt_lcd_pdata); | |
2a3a1804 | 252 | s3c_nand_set_platdata(&hmt_nand_info); |
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253 | |
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); | |
262 | ||
263 | platform_add_devices(hmt_devices, ARRAY_SIZE(hmt_devices)); | |
264 | } | |
265 | ||
266 | MACHINE_START(HMT, "Airgoo-HMT") | |
267 | /* Maintainer: Peter Korsgaard <jacmet@sunsite.dk> */ | |
170a5908 | 268 | .atag_offset = 0x100, |
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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 |