diff options
author | Peter Korsgaard <jacmet@sunsite.dk> | 2009-07-01 11:47:09 -0400 |
---|---|---|
committer | Ben Dooks <ben-linux@fluff.org> | 2009-07-30 19:08:46 -0400 |
commit | 2896bda4824c1e4d34852e355916e34671e38a11 (patch) | |
tree | 2635a653b3ec725a980aa708997d755d69761ba2 /arch/arm/mach-s3c6410/mach-hmt.c | |
parent | 9b71de49b030ad8fd4d13d38571b5c42dc9ed8dd (diff) |
ARM: S3C6410: airgoo hmt board support
Add support for the Airgoo HMT (home media terminal) device.
The HMT is a tablet device with a s3c6410, a 7" LCD and a number
of peripheral connections.
For more details of the hardware specs, see:
http://article.gmane.org/gmane.linux.debian.devel.embedded/4307
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
[ben-linux@fluff.org: subject rewrite]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/mach-s3c6410/mach-hmt.c')
-rw-r--r-- | arch/arm/mach-s3c6410/mach-hmt.c | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c6410/mach-hmt.c b/arch/arm/mach-s3c6410/mach-hmt.c new file mode 100644 index 000000000000..c5741056193f --- /dev/null +++ b/arch/arm/mach-s3c6410/mach-hmt.c | |||
@@ -0,0 +1,276 @@ | |||
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 | ||