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 #include <mach/irqs.h>
35
36 #include <asm/irq.h>
37 #include <asm/mach-types.h>
38
39 #include <linux/platform_data/i2c-s3c2410.h>
40 #include <mach/gpio-samsung.h>
41 #include <plat/fb.h>
42 #include <linux/platform_data/mtd-nand-s3c2410.h>
43
44 #include <plat/devs.h>
45 #include <plat/cpu.h>
46 #include <plat/samsung-time.h>
47
48 #include "common.h"
49
50 #define UCON S3C2410_UCON_DEFAULT
51 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
52 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
53
54 static struct s3c2410_uartcfg hmt_uartcfgs[] __initdata = {
55 [0] = {
56 .hwport = 0,
57 .flags = 0,
58 .ucon = UCON,
59 .ulcon = ULCON,
60 .ufcon = UFCON,
61 },
62 [1] = {
63 .hwport = 1,
64 .flags = 0,
65 .ucon = UCON,
66 .ulcon = ULCON,
67 .ufcon = UFCON,
68 },
69 [2] = {
70 .hwport = 2,
71 .flags = 0,
72 .ucon = UCON,
73 .ulcon = ULCON,
74 .ufcon = UFCON,
75 },
76 };
77
78 static struct pwm_lookup hmt_pwm_lookup[] = {
79 PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL,
80 1000000000 / (100 * 256 * 20), PWM_POLARITY_NORMAL),
81 };
82
hmt_bl_init(struct device * dev)83 static int hmt_bl_init(struct device *dev)
84 {
85 int ret;
86
87 ret = gpio_request(S3C64XX_GPB(4), "lcd backlight enable");
88 if (!ret)
89 ret = gpio_direction_output(S3C64XX_GPB(4), 0);
90
91 return ret;
92 }
93
hmt_bl_notify(struct device * dev,int brightness)94 static int hmt_bl_notify(struct device *dev, int brightness)
95 {
96 /*
97 * translate from CIELUV/CIELAB L*->brightness, E.G. from
98 * perceived luminance to light output. Assumes range 0..25600
99 */
100 if (brightness < 0x800) {
101 /* Y = Yn * L / 903.3 */
102 brightness = (100*256 * brightness + 231245/2) / 231245;
103 } else {
104 /* Y = Yn * ((L + 16) / 116 )^3 */
105 int t = (brightness*4 + 16*1024 + 58)/116;
106 brightness = 25 * ((t * t * t + 0x100000/2) / 0x100000);
107 }
108
109 gpio_set_value(S3C64XX_GPB(4), brightness);
110
111 return brightness;
112 }
113
hmt_bl_exit(struct device * dev)114 static void hmt_bl_exit(struct device *dev)
115 {
116 gpio_free(S3C64XX_GPB(4));
117 }
118
119 static struct platform_pwm_backlight_data hmt_backlight_data = {
120 .max_brightness = 100 * 256,
121 .dft_brightness = 40 * 256,
122 .enable_gpio = -1,
123 .init = hmt_bl_init,
124 .notify = hmt_bl_notify,
125 .exit = hmt_bl_exit,
126
127 };
128
129 static struct platform_device hmt_backlight_device = {
130 .name = "pwm-backlight",
131 .dev = {
132 .parent = &samsung_device_pwm.dev,
133 .platform_data = &hmt_backlight_data,
134 },
135 };
136
137 static struct s3c_fb_pd_win hmt_fb_win0 = {
138 .max_bpp = 32,
139 .default_bpp = 16,
140 .xres = 800,
141 .yres = 480,
142 };
143
144 static struct fb_videomode hmt_lcd_timing = {
145 .left_margin = 8,
146 .right_margin = 13,
147 .upper_margin = 7,
148 .lower_margin = 5,
149 .hsync_len = 3,
150 .vsync_len = 1,
151 .xres = 800,
152 .yres = 480,
153 };
154
155 /* 405566 clocks per frame => 60Hz refresh requires 24333960Hz clock */
156 static struct s3c_fb_platdata hmt_lcd_pdata __initdata = {
157 .setup_gpio = s3c64xx_fb_gpio_setup_24bpp,
158 .vtiming = &hmt_lcd_timing,
159 .win[0] = &hmt_fb_win0,
160 .vidcon0 = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
161 .vidcon1 = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
162 };
163
164 static struct mtd_partition hmt_nand_part[] = {
165 [0] = {
166 .name = "uboot",
167 .size = SZ_512K,
168 .offset = 0,
169 },
170 [1] = {
171 .name = "uboot-env1",
172 .size = SZ_256K,
173 .offset = SZ_512K,
174 },
175 [2] = {
176 .name = "uboot-env2",
177 .size = SZ_256K,
178 .offset = SZ_512K + SZ_256K,
179 },
180 [3] = {
181 .name = "kernel",
182 .size = SZ_2M,
183 .offset = SZ_1M,
184 },
185 [4] = {
186 .name = "rootfs",
187 .size = MTDPART_SIZ_FULL,
188 .offset = SZ_1M + SZ_2M,
189 },
190 };
191
192 static struct s3c2410_nand_set hmt_nand_sets[] = {
193 [0] = {
194 .name = "nand",
195 .nr_chips = 1,
196 .nr_partitions = ARRAY_SIZE(hmt_nand_part),
197 .partitions = hmt_nand_part,
198 },
199 };
200
201 static struct s3c2410_platform_nand hmt_nand_info = {
202 .tacls = 25,
203 .twrph0 = 55,
204 .twrph1 = 40,
205 .nr_sets = ARRAY_SIZE(hmt_nand_sets),
206 .sets = hmt_nand_sets,
207 };
208
209 static struct gpio_led hmt_leds[] = {
210 { /* left function keys */
211 .name = "left:blue",
212 .gpio = S3C64XX_GPO(12),
213 .default_trigger = "default-on",
214 },
215 { /* right function keys - red */
216 .name = "right:red",
217 .gpio = S3C64XX_GPO(13),
218 },
219 { /* right function keys - green */
220 .name = "right:green",
221 .gpio = S3C64XX_GPO(14),
222 },
223 { /* right function keys - blue */
224 .name = "right:blue",
225 .gpio = S3C64XX_GPO(15),
226 .default_trigger = "default-on",
227 },
228 };
229
230 static struct gpio_led_platform_data hmt_led_data = {
231 .num_leds = ARRAY_SIZE(hmt_leds),
232 .leds = hmt_leds,
233 };
234
235 static struct platform_device hmt_leds_device = {
236 .name = "leds-gpio",
237 .id = -1,
238 .dev.platform_data = &hmt_led_data,
239 };
240
241 static struct map_desc hmt_iodesc[] = {};
242
243 static struct platform_device *hmt_devices[] __initdata = {
244 &s3c_device_i2c0,
245 &s3c_device_nand,
246 &s3c_device_fb,
247 &s3c_device_ohci,
248 &samsung_device_pwm,
249 &hmt_backlight_device,
250 &hmt_leds_device,
251 };
252
hmt_map_io(void)253 static void __init hmt_map_io(void)
254 {
255 s3c64xx_init_io(hmt_iodesc, ARRAY_SIZE(hmt_iodesc));
256 s3c64xx_set_xtal_freq(12000000);
257 s3c24xx_init_uarts(hmt_uartcfgs, ARRAY_SIZE(hmt_uartcfgs));
258 samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
259 }
260
hmt_machine_init(void)261 static void __init hmt_machine_init(void)
262 {
263 s3c_i2c0_set_platdata(NULL);
264 s3c_fb_set_platdata(&hmt_lcd_pdata);
265 s3c_nand_set_platdata(&hmt_nand_info);
266
267 gpio_request(S3C64XX_GPC(7), "usb power");
268 gpio_direction_output(S3C64XX_GPC(7), 0);
269 gpio_request(S3C64XX_GPM(0), "usb power");
270 gpio_direction_output(S3C64XX_GPM(0), 1);
271 gpio_request(S3C64XX_GPK(7), "usb power");
272 gpio_direction_output(S3C64XX_GPK(7), 1);
273 gpio_request(S3C64XX_GPF(13), "usb power");
274 gpio_direction_output(S3C64XX_GPF(13), 1);
275
276 pwm_add_table(hmt_pwm_lookup, ARRAY_SIZE(hmt_pwm_lookup));
277 platform_add_devices(hmt_devices, ARRAY_SIZE(hmt_devices));
278 }
279
280 MACHINE_START(HMT, "Airgoo-HMT")
281 /* Maintainer: Peter Korsgaard <jacmet@sunsite.dk> */
282 .atag_offset = 0x100,
283 .nr_irqs = S3C64XX_NR_IRQS,
284 .init_irq = s3c6410_init_irq,
285 .map_io = hmt_map_io,
286 .init_machine = hmt_machine_init,
287 .init_time = samsung_timer_init,
288 .restart = s3c64xx_restart,
289 MACHINE_END
290