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1 /* linux/arch/arm/mach-s3c2440/mach-mini2440.c
2  *
3  * Copyright (c) 2008 Ramax Lo <ramaxlo@gmail.com>
4  *      Based on mach-anubis.c by Ben Dooks <ben@simtec.co.uk>
5  *      and modifications by SBZ <sbz@spgui.org> and
6  *      Weibing <http://weibing.blogbus.com> and
7  *      Michel Pollet <buserror@gmail.com>
8  *
9  * For product information, visit http://code.google.com/p/mini2440/
10  *
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License version 2 as
13  * published by the Free Software Foundation.
14 */
15 
16 #include <linux/kernel.h>
17 #include <linux/types.h>
18 #include <linux/interrupt.h>
19 #include <linux/list.h>
20 #include <linux/timer.h>
21 #include <linux/init.h>
22 #include <linux/gpio.h>
23 #include <linux/input.h>
24 #include <linux/io.h>
25 #include <linux/serial_core.h>
26 #include <linux/serial_s3c.h>
27 #include <linux/dm9000.h>
28 #include <linux/platform_data/at24.h>
29 #include <linux/platform_device.h>
30 #include <linux/gpio_keys.h>
31 #include <linux/i2c.h>
32 #include <linux/mmc/host.h>
33 
34 #include <asm/mach/arch.h>
35 #include <asm/mach/map.h>
36 
37 #include <mach/hardware.h>
38 #include <mach/fb.h>
39 #include <asm/mach-types.h>
40 
41 #include <mach/regs-gpio.h>
42 #include <linux/platform_data/leds-s3c24xx.h>
43 #include <mach/regs-lcd.h>
44 #include <mach/irqs.h>
45 #include <mach/gpio-samsung.h>
46 #include <linux/platform_data/mtd-nand-s3c2410.h>
47 #include <linux/platform_data/i2c-s3c2410.h>
48 #include <linux/platform_data/mmc-s3cmci.h>
49 #include <linux/platform_data/usb-s3c2410_udc.h>
50 
51 #include <linux/mtd/mtd.h>
52 #include <linux/mtd/nand.h>
53 #include <linux/mtd/nand_ecc.h>
54 #include <linux/mtd/partitions.h>
55 
56 #include <plat/gpio-cfg.h>
57 #include <plat/devs.h>
58 #include <plat/cpu.h>
59 #include <plat/samsung-time.h>
60 
61 #include <sound/s3c24xx_uda134x.h>
62 
63 #include "common.h"
64 
65 #define MACH_MINI2440_DM9K_BASE (S3C2410_CS4 + 0x300)
66 
67 static struct map_desc mini2440_iodesc[] __initdata = {
68 	/* nothing to declare, move along */
69 };
70 
71 #define UCON S3C2410_UCON_DEFAULT
72 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
73 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
74 
75 
76 static struct s3c2410_uartcfg mini2440_uartcfgs[] __initdata = {
77 	[0] = {
78 		.hwport	     = 0,
79 		.flags	     = 0,
80 		.ucon	     = UCON,
81 		.ulcon	     = ULCON,
82 		.ufcon	     = UFCON,
83 	},
84 	[1] = {
85 		.hwport	     = 1,
86 		.flags	     = 0,
87 		.ucon	     = UCON,
88 		.ulcon	     = ULCON,
89 		.ufcon	     = UFCON,
90 	},
91 	[2] = {
92 		.hwport	     = 2,
93 		.flags	     = 0,
94 		.ucon	     = UCON,
95 		.ulcon	     = ULCON,
96 		.ufcon	     = UFCON,
97 	},
98 };
99 
100 /* USB device UDC support */
101 
102 static struct s3c2410_udc_mach_info mini2440_udc_cfg __initdata = {
103 	.pullup_pin = S3C2410_GPC(5),
104 };
105 
106 
107 /* LCD timing and setup */
108 
109 /*
110  * This macro simplifies the table bellow
111  */
112 #define _LCD_DECLARE(_clock,_xres,margin_left,margin_right,hsync, \
113 			_yres,margin_top,margin_bottom,vsync, refresh) \
114 	.width = _xres, \
115 	.xres = _xres, \
116 	.height = _yres, \
117 	.yres = _yres, \
118 	.left_margin	= margin_left,	\
119 	.right_margin	= margin_right,	\
120 	.upper_margin	= margin_top,	\
121 	.lower_margin	= margin_bottom,	\
122 	.hsync_len	= hsync,	\
123 	.vsync_len	= vsync,	\
124 	.pixclock	= ((_clock*100000000000LL) /	\
125 			   ((refresh) * \
126 			   (hsync + margin_left + _xres + margin_right) * \
127 			   (vsync + margin_top + _yres + margin_bottom))), \
128 	.bpp		= 16,\
129 	.type		= (S3C2410_LCDCON1_TFT16BPP |\
130 			   S3C2410_LCDCON1_TFT)
131 
132 static struct s3c2410fb_display mini2440_lcd_cfg[] __initdata = {
133 	[0] = {	/* mini2440 + 3.5" TFT + touchscreen */
134 		_LCD_DECLARE(
135 			7,			/* The 3.5 is quite fast */
136 			240, 21, 38, 6, 	/* x timing */
137 			320, 4, 4, 2,		/* y timing */
138 			60),			/* refresh rate */
139 		.lcdcon5	= (S3C2410_LCDCON5_FRM565 |
140 				   S3C2410_LCDCON5_INVVLINE |
141 				   S3C2410_LCDCON5_INVVFRAME |
142 				   S3C2410_LCDCON5_INVVDEN |
143 				   S3C2410_LCDCON5_PWREN),
144 	},
145 	[1] = { /* mini2440 + 7" TFT + touchscreen */
146 		_LCD_DECLARE(
147 			10,			/* the 7" runs slower */
148 			800, 40, 40, 48, 	/* x timing */
149 			480, 29, 3, 3,		/* y timing */
150 			50),			/* refresh rate */
151 		.lcdcon5	= (S3C2410_LCDCON5_FRM565 |
152 				   S3C2410_LCDCON5_INVVLINE |
153 				   S3C2410_LCDCON5_INVVFRAME |
154 				   S3C2410_LCDCON5_PWREN),
155 	},
156 	/* The VGA shield can outout at several resolutions. All share
157 	 * the same timings, however, anything smaller than 1024x768
158 	 * will only be displayed in the top left corner of a 1024x768
159 	 * XGA output unless you add optional dip switches to the shield.
160 	 * Therefore timings for other resolutions have been omitted here.
161 	 */
162 	[2] = {
163 		_LCD_DECLARE(
164 			10,
165 			1024, 1, 2, 2,		/* y timing */
166 			768, 200, 16, 16, 	/* x timing */
167 			24),	/* refresh rate, maximum stable,
168 				 tested with the FPGA shield */
169 		.lcdcon5	= (S3C2410_LCDCON5_FRM565 |
170 				   S3C2410_LCDCON5_HWSWP),
171 	},
172 	/* mini2440 + 3.5" TFT (LCD-W35i, LQ035Q1DG06 type) + touchscreen*/
173 	[3] = {
174 		_LCD_DECLARE(
175 			/* clock */
176 			7,
177 			/* xres, margin_right, margin_left, hsync */
178 			320, 68, 66, 4,
179 			/* yres, margin_top, margin_bottom, vsync */
180 			240, 4, 4, 9,
181 			/* refresh rate */
182 			60),
183 		.lcdcon5	= (S3C2410_LCDCON5_FRM565 |
184 				   S3C2410_LCDCON5_INVVDEN |
185 				   S3C2410_LCDCON5_INVVFRAME |
186 				   S3C2410_LCDCON5_INVVLINE |
187 				   S3C2410_LCDCON5_INVVCLK |
188 				   S3C2410_LCDCON5_HWSWP),
189 	},
190 };
191 
192 /* todo - put into gpio header */
193 
194 #define S3C2410_GPCCON_MASK(x)	(3 << ((x) * 2))
195 #define S3C2410_GPDCON_MASK(x)	(3 << ((x) * 2))
196 
197 static struct s3c2410fb_mach_info mini2440_fb_info __initdata = {
198 	.displays	 = &mini2440_lcd_cfg[0], /* not constant! see init */
199 	.num_displays	 = 1,
200 	.default_display = 0,
201 
202 	/* Enable VD[2..7], VD[10..15], VD[18..23] and VCLK, syncs, VDEN
203 	 * and disable the pull down resistors on pins we are using for LCD
204 	 * data. */
205 
206 	.gpcup		= (0xf << 1) | (0x3f << 10),
207 
208 	.gpccon		= (S3C2410_GPC1_VCLK   | S3C2410_GPC2_VLINE |
209 			   S3C2410_GPC3_VFRAME | S3C2410_GPC4_VM |
210 			   S3C2410_GPC10_VD2   | S3C2410_GPC11_VD3 |
211 			   S3C2410_GPC12_VD4   | S3C2410_GPC13_VD5 |
212 			   S3C2410_GPC14_VD6   | S3C2410_GPC15_VD7),
213 
214 	.gpccon_mask	= (S3C2410_GPCCON_MASK(1)  | S3C2410_GPCCON_MASK(2)  |
215 			   S3C2410_GPCCON_MASK(3)  | S3C2410_GPCCON_MASK(4)  |
216 			   S3C2410_GPCCON_MASK(10) | S3C2410_GPCCON_MASK(11) |
217 			   S3C2410_GPCCON_MASK(12) | S3C2410_GPCCON_MASK(13) |
218 			   S3C2410_GPCCON_MASK(14) | S3C2410_GPCCON_MASK(15)),
219 
220 	.gpdup		= (0x3f << 2) | (0x3f << 10),
221 
222 	.gpdcon		= (S3C2410_GPD2_VD10  | S3C2410_GPD3_VD11 |
223 			   S3C2410_GPD4_VD12  | S3C2410_GPD5_VD13 |
224 			   S3C2410_GPD6_VD14  | S3C2410_GPD7_VD15 |
225 			   S3C2410_GPD10_VD18 | S3C2410_GPD11_VD19 |
226 			   S3C2410_GPD12_VD20 | S3C2410_GPD13_VD21 |
227 			   S3C2410_GPD14_VD22 | S3C2410_GPD15_VD23),
228 
229 	.gpdcon_mask	= (S3C2410_GPDCON_MASK(2)  | S3C2410_GPDCON_MASK(3) |
230 			   S3C2410_GPDCON_MASK(4)  | S3C2410_GPDCON_MASK(5) |
231 			   S3C2410_GPDCON_MASK(6)  | S3C2410_GPDCON_MASK(7) |
232 			   S3C2410_GPDCON_MASK(10) | S3C2410_GPDCON_MASK(11)|
233 			   S3C2410_GPDCON_MASK(12) | S3C2410_GPDCON_MASK(13)|
234 			   S3C2410_GPDCON_MASK(14) | S3C2410_GPDCON_MASK(15)),
235 };
236 
237 /* MMC/SD  */
238 
239 static struct s3c24xx_mci_pdata mini2440_mmc_cfg __initdata = {
240    .gpio_detect   = S3C2410_GPG(8),
241    .gpio_wprotect = S3C2410_GPH(8),
242    .set_power     = NULL,
243    .ocr_avail     = MMC_VDD_32_33|MMC_VDD_33_34,
244 };
245 
246 /* NAND Flash on MINI2440 board */
247 
248 static struct mtd_partition mini2440_default_nand_part[] __initdata = {
249 	[0] = {
250 		.name	= "u-boot",
251 		.size	= SZ_256K,
252 		.offset	= 0,
253 	},
254 	[1] = {
255 		.name	= "u-boot-env",
256 		.size	= SZ_128K,
257 		.offset	= SZ_256K,
258 	},
259 	[2] = {
260 		.name	= "kernel",
261 		/* 5 megabytes, for a kernel with no modules
262 		 * or a uImage with a ramdisk attached */
263 		.size	= 0x00500000,
264 		.offset	= SZ_256K + SZ_128K,
265 	},
266 	[3] = {
267 		.name	= "root",
268 		.offset	= SZ_256K + SZ_128K + 0x00500000,
269 		.size	= MTDPART_SIZ_FULL,
270 	},
271 };
272 
273 static struct s3c2410_nand_set mini2440_nand_sets[] __initdata = {
274 	[0] = {
275 		.name		= "nand",
276 		.nr_chips	= 1,
277 		.nr_partitions	= ARRAY_SIZE(mini2440_default_nand_part),
278 		.partitions	= mini2440_default_nand_part,
279 		.flash_bbt 	= 1, /* we use u-boot to create a BBT */
280 	},
281 };
282 
283 static struct s3c2410_platform_nand mini2440_nand_info __initdata = {
284 	.tacls		= 0,
285 	.twrph0		= 25,
286 	.twrph1		= 15,
287 	.nr_sets	= ARRAY_SIZE(mini2440_nand_sets),
288 	.sets		= mini2440_nand_sets,
289 	.ignore_unset_ecc = 1,
290 };
291 
292 /* DM9000AEP 10/100 ethernet controller */
293 
294 static struct resource mini2440_dm9k_resource[] = {
295 	[0] = DEFINE_RES_MEM(MACH_MINI2440_DM9K_BASE, 4),
296 	[1] = DEFINE_RES_MEM(MACH_MINI2440_DM9K_BASE + 4, 4),
297 	[2] = DEFINE_RES_NAMED(IRQ_EINT7, 1, NULL, IORESOURCE_IRQ \
298 						| IORESOURCE_IRQ_HIGHEDGE),
299 };
300 
301 /*
302  * The DM9000 has no eeprom, and it's MAC address is set by
303  * the bootloader before starting the kernel.
304  */
305 static struct dm9000_plat_data mini2440_dm9k_pdata = {
306 	.flags		= (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
307 };
308 
309 static struct platform_device mini2440_device_eth = {
310 	.name		= "dm9000",
311 	.id		= -1,
312 	.num_resources	= ARRAY_SIZE(mini2440_dm9k_resource),
313 	.resource	= mini2440_dm9k_resource,
314 	.dev		= {
315 		.platform_data	= &mini2440_dm9k_pdata,
316 	},
317 };
318 
319 /*  CON5
320  *	+--+	 /-----\
321  *	|  |    |	|
322  *	|  |	|  BAT	|
323  *	|  |	 \_____/
324  *	|  |
325  *	|  |  +----+  +----+
326  *	|  |  | K5 |  | K1 |
327  *	|  |  +----+  +----+
328  *	|  |  +----+  +----+
329  *	|  |  | K4 |  | K2 |
330  *	|  |  +----+  +----+
331  *	|  |  +----+  +----+
332  *	|  |  | K6 |  | K3 |
333  *	|  |  +----+  +----+
334  *	  .....
335  */
336 static struct gpio_keys_button mini2440_buttons[] = {
337 	{
338 		.gpio		= S3C2410_GPG(0),		/* K1 */
339 		.code		= KEY_F1,
340 		.desc		= "Button 1",
341 		.active_low	= 1,
342 	},
343 	{
344 		.gpio		= S3C2410_GPG(3),		/* K2 */
345 		.code		= KEY_F2,
346 		.desc		= "Button 2",
347 		.active_low	= 1,
348 	},
349 	{
350 		.gpio		= S3C2410_GPG(5),		/* K3 */
351 		.code		= KEY_F3,
352 		.desc		= "Button 3",
353 		.active_low	= 1,
354 	},
355 	{
356 		.gpio		= S3C2410_GPG(6),		/* K4 */
357 		.code		= KEY_POWER,
358 		.desc		= "Power",
359 		.active_low	= 1,
360 	},
361 	{
362 		.gpio		= S3C2410_GPG(7),		/* K5 */
363 		.code		= KEY_F5,
364 		.desc		= "Button 5",
365 		.active_low	= 1,
366 	},
367 #if 0
368 	/* this pin is also known as TCLK1 and seems to already
369 	 * marked as "in use" somehow in the kernel -- possibly wrongly */
370 	{
371 		.gpio		= S3C2410_GPG(11),	/* K6 */
372 		.code		= KEY_F6,
373 		.desc		= "Button 6",
374 		.active_low	= 1,
375 	},
376 #endif
377 };
378 
379 static struct gpio_keys_platform_data mini2440_button_data = {
380 	.buttons	= mini2440_buttons,
381 	.nbuttons	= ARRAY_SIZE(mini2440_buttons),
382 };
383 
384 static struct platform_device mini2440_button_device = {
385 	.name		= "gpio-keys",
386 	.id		= -1,
387 	.dev		= {
388 		.platform_data	= &mini2440_button_data,
389 	}
390 };
391 
392 /* LEDS */
393 
394 static struct s3c24xx_led_platdata mini2440_led1_pdata = {
395 	.name		= "led1",
396 	.gpio		= S3C2410_GPB(5),
397 	.flags		= S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
398 	.def_trigger	= "heartbeat",
399 };
400 
401 static struct s3c24xx_led_platdata mini2440_led2_pdata = {
402 	.name		= "led2",
403 	.gpio		= S3C2410_GPB(6),
404 	.flags		= S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
405 	.def_trigger	= "nand-disk",
406 };
407 
408 static struct s3c24xx_led_platdata mini2440_led3_pdata = {
409 	.name		= "led3",
410 	.gpio		= S3C2410_GPB(7),
411 	.flags		= S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
412 	.def_trigger	= "mmc0",
413 };
414 
415 static struct s3c24xx_led_platdata mini2440_led4_pdata = {
416 	.name		= "led4",
417 	.gpio		= S3C2410_GPB(8),
418 	.flags		= S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
419 	.def_trigger	= "",
420 };
421 
422 static struct s3c24xx_led_platdata mini2440_led_backlight_pdata = {
423 	.name		= "backlight",
424 	.gpio		= S3C2410_GPG(4),
425 	.def_trigger	= "backlight",
426 };
427 
428 static struct platform_device mini2440_led1 = {
429 	.name		= "s3c24xx_led",
430 	.id		= 1,
431 	.dev		= {
432 		.platform_data	= &mini2440_led1_pdata,
433 	},
434 };
435 
436 static struct platform_device mini2440_led2 = {
437 	.name		= "s3c24xx_led",
438 	.id		= 2,
439 	.dev		= {
440 		.platform_data	= &mini2440_led2_pdata,
441 	},
442 };
443 
444 static struct platform_device mini2440_led3 = {
445 	.name		= "s3c24xx_led",
446 	.id		= 3,
447 	.dev		= {
448 		.platform_data	= &mini2440_led3_pdata,
449 	},
450 };
451 
452 static struct platform_device mini2440_led4 = {
453 	.name		= "s3c24xx_led",
454 	.id		= 4,
455 	.dev		= {
456 		.platform_data	= &mini2440_led4_pdata,
457 	},
458 };
459 
460 static struct platform_device mini2440_led_backlight = {
461 	.name		= "s3c24xx_led",
462 	.id		= 5,
463 	.dev		= {
464 		.platform_data	= &mini2440_led_backlight_pdata,
465 	},
466 };
467 
468 /* AUDIO */
469 
470 static struct s3c24xx_uda134x_platform_data mini2440_audio_pins = {
471 	.l3_clk = S3C2410_GPB(4),
472 	.l3_mode = S3C2410_GPB(2),
473 	.l3_data = S3C2410_GPB(3),
474 	.model = UDA134X_UDA1341
475 };
476 
477 static struct platform_device mini2440_audio = {
478 	.name		= "s3c24xx_uda134x",
479 	.id		= 0,
480 	.dev		= {
481 		.platform_data	= &mini2440_audio_pins,
482 	},
483 };
484 
485 /*
486  * I2C devices
487  */
488 static struct at24_platform_data at24c08 = {
489 	.byte_len	= SZ_8K / 8,
490 	.page_size	= 16,
491 };
492 
493 static struct i2c_board_info mini2440_i2c_devs[] __initdata = {
494 	{
495 		I2C_BOARD_INFO("24c08", 0x50),
496 		.platform_data = &at24c08,
497 	},
498 };
499 
500 static struct platform_device uda1340_codec = {
501 		.name = "uda134x-codec",
502 		.id = -1,
503 };
504 
505 static struct platform_device *mini2440_devices[] __initdata = {
506 	&s3c_device_ohci,
507 	&s3c_device_wdt,
508 	&s3c_device_i2c0,
509 	&s3c_device_rtc,
510 	&s3c_device_usbgadget,
511 	&mini2440_device_eth,
512 	&mini2440_led1,
513 	&mini2440_led2,
514 	&mini2440_led3,
515 	&mini2440_led4,
516 	&mini2440_button_device,
517 	&s3c_device_nand,
518 	&s3c_device_sdi,
519 	&s3c_device_iis,
520 	&uda1340_codec,
521 	&mini2440_audio,
522 };
523 
mini2440_map_io(void)524 static void __init mini2440_map_io(void)
525 {
526 	s3c24xx_init_io(mini2440_iodesc, ARRAY_SIZE(mini2440_iodesc));
527 	s3c24xx_init_uarts(mini2440_uartcfgs, ARRAY_SIZE(mini2440_uartcfgs));
528 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
529 }
530 
mini2440_init_time(void)531 static void __init mini2440_init_time(void)
532 {
533 	s3c2440_init_clocks(12000000);
534 	samsung_timer_init();
535 }
536 
537 /*
538  * mini2440_features string
539  *
540  * t = Touchscreen present
541  * b = backlight control
542  * c = camera [TODO]
543  * 0-9 LCD configuration
544  *
545  */
546 static char mini2440_features_str[12] __initdata = "0tb";
547 
mini2440_features_setup(char * str)548 static int __init mini2440_features_setup(char *str)
549 {
550 	if (str)
551 		strlcpy(mini2440_features_str, str, sizeof(mini2440_features_str));
552 	return 1;
553 }
554 
555 __setup("mini2440=", mini2440_features_setup);
556 
557 #define FEATURE_SCREEN (1 << 0)
558 #define FEATURE_BACKLIGHT (1 << 1)
559 #define FEATURE_TOUCH (1 << 2)
560 #define FEATURE_CAMERA (1 << 3)
561 
562 struct mini2440_features_t {
563 	int count;
564 	int done;
565 	int lcd_index;
566 	struct platform_device *optional[8];
567 };
568 
mini2440_parse_features(struct mini2440_features_t * features,const char * features_str)569 static void __init mini2440_parse_features(
570 		struct mini2440_features_t * features,
571 		const char * features_str )
572 {
573 	const char * fp = features_str;
574 
575 	features->count = 0;
576 	features->done = 0;
577 	features->lcd_index = -1;
578 
579 	while (*fp) {
580 		char f = *fp++;
581 
582 		switch (f) {
583 		case '0'...'9':	/* tft screen */
584 			if (features->done & FEATURE_SCREEN) {
585 				printk(KERN_INFO "MINI2440: '%c' ignored, "
586 					"screen type already set\n", f);
587 			} else {
588 				int li = f - '0';
589 				if (li >= ARRAY_SIZE(mini2440_lcd_cfg))
590 					printk(KERN_INFO "MINI2440: "
591 						"'%c' out of range LCD mode\n", f);
592 				else {
593 					features->optional[features->count++] =
594 							&s3c_device_lcd;
595 					features->lcd_index = li;
596 				}
597 			}
598 			features->done |= FEATURE_SCREEN;
599 			break;
600 		case 'b':
601 			if (features->done & FEATURE_BACKLIGHT)
602 				printk(KERN_INFO "MINI2440: '%c' ignored, "
603 					"backlight already set\n", f);
604 			else {
605 				features->optional[features->count++] =
606 						&mini2440_led_backlight;
607 			}
608 			features->done |= FEATURE_BACKLIGHT;
609 			break;
610 		case 't':
611 			printk(KERN_INFO "MINI2440: '%c' ignored, "
612 				"touchscreen not compiled in\n", f);
613 			break;
614 		case 'c':
615 			if (features->done & FEATURE_CAMERA)
616 				printk(KERN_INFO "MINI2440: '%c' ignored, "
617 					"camera already registered\n", f);
618 			else
619 				features->optional[features->count++] =
620 					&s3c_device_camif;
621 			features->done |= FEATURE_CAMERA;
622 			break;
623 		}
624 	}
625 }
626 
mini2440_init(void)627 static void __init mini2440_init(void)
628 {
629 	struct mini2440_features_t features = { 0 };
630 	int i;
631 
632 	printk(KERN_INFO "MINI2440: Option string mini2440=%s\n",
633 			mini2440_features_str);
634 
635 	/* Parse the feature string */
636 	mini2440_parse_features(&features, mini2440_features_str);
637 
638 	/* turn LCD on */
639 	s3c_gpio_cfgpin(S3C2410_GPC(0), S3C2410_GPC0_LEND);
640 
641 	/* Turn the backlight early on */
642 	WARN_ON(gpio_request_one(S3C2410_GPG(4), GPIOF_OUT_INIT_HIGH, NULL));
643 	gpio_free(S3C2410_GPG(4));
644 
645 	/* remove pullup on optional PWM backlight -- unused on 3.5 and 7"s */
646 	gpio_request_one(S3C2410_GPB(1), GPIOF_IN, NULL);
647 	s3c_gpio_setpull(S3C2410_GPB(1), S3C_GPIO_PULL_UP);
648 	gpio_free(S3C2410_GPB(1));
649 
650 	/* mark the key as input, without pullups (there is one on the board) */
651 	for (i = 0; i < ARRAY_SIZE(mini2440_buttons); i++) {
652 		s3c_gpio_setpull(mini2440_buttons[i].gpio, S3C_GPIO_PULL_UP);
653 		s3c_gpio_cfgpin(mini2440_buttons[i].gpio, S3C2410_GPIO_INPUT);
654 	}
655 	if (features.lcd_index != -1) {
656 		int li;
657 
658 		mini2440_fb_info.displays =
659 			&mini2440_lcd_cfg[features.lcd_index];
660 
661 		printk(KERN_INFO "MINI2440: LCD");
662 		for (li = 0; li < ARRAY_SIZE(mini2440_lcd_cfg); li++)
663 			if (li == features.lcd_index)
664 				printk(" [%d:%dx%d]", li,
665 					mini2440_lcd_cfg[li].width,
666 					mini2440_lcd_cfg[li].height);
667 			else
668 				printk(" %d:%dx%d", li,
669 					mini2440_lcd_cfg[li].width,
670 					mini2440_lcd_cfg[li].height);
671 		printk("\n");
672 		s3c24xx_fb_set_platdata(&mini2440_fb_info);
673 	}
674 
675 	s3c24xx_udc_set_platdata(&mini2440_udc_cfg);
676 	s3c24xx_mci_set_platdata(&mini2440_mmc_cfg);
677 	s3c_nand_set_platdata(&mini2440_nand_info);
678 	s3c_i2c0_set_platdata(NULL);
679 
680 	i2c_register_board_info(0, mini2440_i2c_devs,
681 				ARRAY_SIZE(mini2440_i2c_devs));
682 
683 	platform_add_devices(mini2440_devices, ARRAY_SIZE(mini2440_devices));
684 
685 	if (features.count)	/* the optional features */
686 		platform_add_devices(features.optional, features.count);
687 
688 }
689 
690 
691 MACHINE_START(MINI2440, "MINI2440")
692 	/* Maintainer: Michel Pollet <buserror@gmail.com> */
693 	.atag_offset	= 0x100,
694 	.map_io		= mini2440_map_io,
695 	.init_machine	= mini2440_init,
696 	.init_irq	= s3c2440_init_irq,
697 	.init_time	= mini2440_init_time,
698 MACHINE_END
699