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/serial_s3c.h>
15 #include <linux/platform_device.h>
16 #include <linux/io.h>
17 #include <linux/i2c.h>
18 #include <linux/fb.h>
19 #include <linux/gpio.h>
20 #include <linux/delay.h>
21 #include <linux/leds.h>
22 #include <linux/pwm.h>
23 #include <linux/pwm_backlight.h>
24 #include <linux/mtd/mtd.h>
25 #include <linux/mtd/partitions.h>
26
27 #include <asm/mach/arch.h>
28 #include <asm/mach/map.h>
29 #include <asm/mach/irq.h>
30
31 #include <video/samsung_fimd.h>
32 #include <mach/hardware.h>
33 #include <mach/map.h>
34
35 #include <asm/irq.h>
36 #include <asm/mach-types.h>
37
38 #include <linux/platform_data/i2c-s3c2410.h>
39 #include <mach/gpio-samsung.h>
40 #include <plat/fb.h>
41 #include <linux/platform_data/mtd-nand-s3c2410.h>
42
43 #include <plat/devs.h>
44 #include <plat/cpu.h>
45 #include <plat/samsung-time.h>
46
47 #include "common.h"
48
49 #define UCON S3C2410_UCON_DEFAULT
50 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
51 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
52
53 static struct s3c2410_uartcfg hmt_uartcfgs[] __initdata = {
54 [0] = {
55 .hwport = 0,
56 .flags = 0,
57 .ucon = UCON,
58 .ulcon = ULCON,
59 .ufcon = UFCON,
60 },
61 [1] = {
62 .hwport = 1,
63 .flags = 0,
64 .ucon = UCON,
65 .ulcon = ULCON,
66 .ufcon = UFCON,
67 },
68 [2] = {
69 .hwport = 2,
70 .flags = 0,
71 .ucon = UCON,
72 .ulcon = ULCON,
73 .ufcon = UFCON,
74 },
75 };
76
77 static struct pwm_lookup hmt_pwm_lookup[] = {
78 PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL,
79 1000000000 / (100 * 256 * 20), PWM_POLARITY_NORMAL),
80 };
81
hmt_bl_init(struct device * dev)82 static int hmt_bl_init(struct device *dev)
83 {
84 int ret;
85
86 ret = gpio_request(S3C64XX_GPB(4), "lcd backlight enable");
87 if (!ret)
88 ret = gpio_direction_output(S3C64XX_GPB(4), 0);
89
90 return ret;
91 }
92
hmt_bl_notify(struct device * dev,int brightness)93 static int hmt_bl_notify(struct device *dev, int brightness)
94 {
95 /*
96 * translate from CIELUV/CIELAB L*->brightness, E.G. from
97 * perceived luminance to light output. Assumes range 0..25600
98 */
99 if (brightness < 0x800) {
100 /* Y = Yn * L / 903.3 */
101 brightness = (100*256 * brightness + 231245/2) / 231245;
102 } else {
103 /* Y = Yn * ((L + 16) / 116 )^3 */
104 int t = (brightness*4 + 16*1024 + 58)/116;
105 brightness = 25 * ((t * t * t + 0x100000/2) / 0x100000);
106 }
107
108 gpio_set_value(S3C64XX_GPB(4), brightness);
109
110 return brightness;
111 }
112
hmt_bl_exit(struct device * dev)113 static void hmt_bl_exit(struct device *dev)
114 {
115 gpio_free(S3C64XX_GPB(4));
116 }
117
118 static struct platform_pwm_backlight_data hmt_backlight_data = {
119 .max_brightness = 100 * 256,
120 .dft_brightness = 40 * 256,
121 .enable_gpio = -1,
122 .init = hmt_bl_init,
123 .notify = hmt_bl_notify,
124 .exit = hmt_bl_exit,
125
126 };
127
128 static struct platform_device hmt_backlight_device = {
129 .name = "pwm-backlight",
130 .dev = {
131 .parent = &samsung_device_pwm.dev,
132 .platform_data = &hmt_backlight_data,
133 },
134 };
135
136 static struct s3c_fb_pd_win hmt_fb_win0 = {
137 .max_bpp = 32,
138 .default_bpp = 16,
139 .xres = 800,
140 .yres = 480,
141 };
142
143 static struct fb_videomode hmt_lcd_timing = {
144 .left_margin = 8,
145 .right_margin = 13,
146 .upper_margin = 7,
147 .lower_margin = 5,
148 .hsync_len = 3,
149 .vsync_len = 1,
150 .xres = 800,
151 .yres = 480,
152 };
153
154 /* 405566 clocks per frame => 60Hz refresh requires 24333960Hz clock */
155 static struct s3c_fb_platdata hmt_lcd_pdata __initdata = {
156 .setup_gpio = s3c64xx_fb_gpio_setup_24bpp,
157 .vtiming = &hmt_lcd_timing,
158 .win[0] = &hmt_fb_win0,
159 .vidcon0 = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
160 .vidcon1 = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
161 };
162
163 static struct mtd_partition hmt_nand_part[] = {
164 [0] = {
165 .name = "uboot",
166 .size = SZ_512K,
167 .offset = 0,
168 },
169 [1] = {
170 .name = "uboot-env1",
171 .size = SZ_256K,
172 .offset = SZ_512K,
173 },
174 [2] = {
175 .name = "uboot-env2",
176 .size = SZ_256K,
177 .offset = SZ_512K + SZ_256K,
178 },
179 [3] = {
180 .name = "kernel",
181 .size = SZ_2M,
182 .offset = SZ_1M,
183 },
184 [4] = {
185 .name = "rootfs",
186 .size = MTDPART_SIZ_FULL,
187 .offset = SZ_1M + SZ_2M,
188 },
189 };
190
191 static struct s3c2410_nand_set hmt_nand_sets[] = {
192 [0] = {
193 .name = "nand",
194 .nr_chips = 1,
195 .nr_partitions = ARRAY_SIZE(hmt_nand_part),
196 .partitions = hmt_nand_part,
197 },
198 };
199
200 static struct s3c2410_platform_nand hmt_nand_info = {
201 .tacls = 25,
202 .twrph0 = 55,
203 .twrph1 = 40,
204 .nr_sets = ARRAY_SIZE(hmt_nand_sets),
205 .sets = hmt_nand_sets,
206 };
207
208 static struct gpio_led hmt_leds[] = {
209 { /* left function keys */
210 .name = "left:blue",
211 .gpio = S3C64XX_GPO(12),
212 .default_trigger = "default-on",
213 },
214 { /* right function keys - red */
215 .name = "right:red",
216 .gpio = S3C64XX_GPO(13),
217 },
218 { /* right function keys - green */
219 .name = "right:green",
220 .gpio = S3C64XX_GPO(14),
221 },
222 { /* right function keys - blue */
223 .name = "right:blue",
224 .gpio = S3C64XX_GPO(15),
225 .default_trigger = "default-on",
226 },
227 };
228
229 static struct gpio_led_platform_data hmt_led_data = {
230 .num_leds = ARRAY_SIZE(hmt_leds),
231 .leds = hmt_leds,
232 };
233
234 static struct platform_device hmt_leds_device = {
235 .name = "leds-gpio",
236 .id = -1,
237 .dev.platform_data = &hmt_led_data,
238 };
239
240 static struct map_desc hmt_iodesc[] = {};
241
242 static struct platform_device *hmt_devices[] __initdata = {
243 &s3c_device_i2c0,
244 &s3c_device_nand,
245 &s3c_device_fb,
246 &s3c_device_ohci,
247 &samsung_device_pwm,
248 &hmt_backlight_device,
249 &hmt_leds_device,
250 };
251
hmt_map_io(void)252 static void __init hmt_map_io(void)
253 {
254 s3c64xx_init_io(hmt_iodesc, ARRAY_SIZE(hmt_iodesc));
255 s3c64xx_set_xtal_freq(12000000);
256 s3c24xx_init_uarts(hmt_uartcfgs, ARRAY_SIZE(hmt_uartcfgs));
257 samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
258 }
259
hmt_machine_init(void)260 static void __init hmt_machine_init(void)
261 {
262 s3c_i2c0_set_platdata(NULL);
263 s3c_fb_set_platdata(&hmt_lcd_pdata);
264 s3c_nand_set_platdata(&hmt_nand_info);
265
266 gpio_request(S3C64XX_GPC(7), "usb power");
267 gpio_direction_output(S3C64XX_GPC(7), 0);
268 gpio_request(S3C64XX_GPM(0), "usb power");
269 gpio_direction_output(S3C64XX_GPM(0), 1);
270 gpio_request(S3C64XX_GPK(7), "usb power");
271 gpio_direction_output(S3C64XX_GPK(7), 1);
272 gpio_request(S3C64XX_GPF(13), "usb power");
273 gpio_direction_output(S3C64XX_GPF(13), 1);
274
275 pwm_add_table(hmt_pwm_lookup, ARRAY_SIZE(hmt_pwm_lookup));
276 platform_add_devices(hmt_devices, ARRAY_SIZE(hmt_devices));
277 }
278
279 MACHINE_START(HMT, "Airgoo-HMT")
280 /* Maintainer: Peter Korsgaard <jacmet@sunsite.dk> */
281 .atag_offset = 0x100,
282 .init_irq = s3c6410_init_irq,
283 .map_io = hmt_map_io,
284 .init_machine = hmt_machine_init,
285 .init_time = samsung_timer_init,
286 .restart = s3c64xx_restart,
287 MACHINE_END
288