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1 // SPDX-License-Identifier: GPL-2.0
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 #include <linux/kernel.h>
12 #include <linux/types.h>
13 #include <linux/interrupt.h>
14 #include <linux/list.h>
15 #include <linux/timer.h>
16 #include <linux/init.h>
17 #include <linux/gpio.h>
18 #include <linux/gpio/machine.h>
19 #include <linux/input.h>
20 #include <linux/io.h>
21 #include <linux/serial_core.h>
22 #include <linux/serial_s3c.h>
23 #include <linux/dm9000.h>
24 #include <linux/property.h>
25 #include <linux/platform_device.h>
26 #include <linux/gpio_keys.h>
27 #include <linux/i2c.h>
28 #include <linux/mmc/host.h>
29 
30 #include <asm/mach/arch.h>
31 #include <asm/mach/map.h>
32 
33 #include <mach/hardware.h>
34 #include <mach/fb.h>
35 #include <asm/mach-types.h>
36 
37 #include <mach/regs-gpio.h>
38 #include <linux/platform_data/leds-s3c24xx.h>
39 #include <mach/regs-lcd.h>
40 #include <mach/irqs.h>
41 #include <mach/gpio-samsung.h>
42 #include <linux/platform_data/mtd-nand-s3c2410.h>
43 #include <linux/platform_data/i2c-s3c2410.h>
44 #include <linux/platform_data/mmc-s3cmci.h>
45 #include <linux/platform_data/usb-s3c2410_udc.h>
46 
47 #include <linux/mtd/mtd.h>
48 #include <linux/mtd/rawnand.h>
49 #include <linux/mtd/nand_ecc.h>
50 #include <linux/mtd/partitions.h>
51 
52 #include <plat/gpio-cfg.h>
53 #include <plat/devs.h>
54 #include <plat/cpu.h>
55 #include <plat/samsung-time.h>
56 
57 #include <sound/s3c24xx_uda134x.h>
58 
59 #include "common.h"
60 
61 #define MACH_MINI2440_DM9K_BASE (S3C2410_CS4 + 0x300)
62 
63 static struct map_desc mini2440_iodesc[] __initdata = {
64 	/* nothing to declare, move along */
65 };
66 
67 #define UCON S3C2410_UCON_DEFAULT
68 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
69 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
70 
71 
72 static struct s3c2410_uartcfg mini2440_uartcfgs[] __initdata = {
73 	[0] = {
74 		.hwport		= 0,
75 		.flags		= 0,
76 		.ucon		= UCON,
77 		.ulcon		= ULCON,
78 		.ufcon		= UFCON,
79 	},
80 	[1] = {
81 		.hwport		= 1,
82 		.flags		= 0,
83 		.ucon		= UCON,
84 		.ulcon		= ULCON,
85 		.ufcon		= UFCON,
86 	},
87 	[2] = {
88 		.hwport		= 2,
89 		.flags		= 0,
90 		.ucon		= UCON,
91 		.ulcon		= ULCON,
92 		.ufcon		= UFCON,
93 	},
94 };
95 
96 /* USB device UDC support */
97 
98 static struct s3c2410_udc_mach_info mini2440_udc_cfg __initdata = {
99 	.pullup_pin = S3C2410_GPC(5),
100 };
101 
102 
103 /* LCD timing and setup */
104 
105 /*
106  * This macro simplifies the table bellow
107  */
108 #define _LCD_DECLARE(_clock, _xres, margin_left, margin_right, hsync, \
109 			_yres, margin_top, margin_bottom, vsync, refresh) \
110 	.width = _xres, \
111 	.xres = _xres, \
112 	.height = _yres, \
113 	.yres = _yres, \
114 	.left_margin	= margin_left,	\
115 	.right_margin	= margin_right,	\
116 	.upper_margin	= margin_top,	\
117 	.lower_margin	= margin_bottom,	\
118 	.hsync_len	= hsync,	\
119 	.vsync_len	= vsync,	\
120 	.pixclock	= ((_clock*100000000000LL) /	\
121 			   ((refresh) * \
122 			   (hsync + margin_left + _xres + margin_right) * \
123 			   (vsync + margin_top + _yres + margin_bottom))), \
124 	.bpp		= 16,\
125 	.type		= (S3C2410_LCDCON1_TFT16BPP |\
126 			   S3C2410_LCDCON1_TFT)
127 
128 static struct s3c2410fb_display mini2440_lcd_cfg[] __initdata = {
129 	[0] = {	/* mini2440 + 3.5" TFT + touchscreen */
130 		_LCD_DECLARE(
131 			7,			/* The 3.5 is quite fast */
132 			240, 21, 38, 6,		/* x timing */
133 			320, 4, 4, 2,		/* y timing */
134 			60),			/* refresh rate */
135 		.lcdcon5	= (S3C2410_LCDCON5_FRM565 |
136 				   S3C2410_LCDCON5_INVVLINE |
137 				   S3C2410_LCDCON5_INVVFRAME |
138 				   S3C2410_LCDCON5_INVVDEN |
139 				   S3C2410_LCDCON5_PWREN),
140 	},
141 	[1] = { /* mini2440 + 7" TFT + touchscreen */
142 		_LCD_DECLARE(
143 			10,			/* the 7" runs slower */
144 			800, 40, 40, 48,	/* x timing */
145 			480, 29, 3, 3,		/* y timing */
146 			50),			/* refresh rate */
147 		.lcdcon5	= (S3C2410_LCDCON5_FRM565 |
148 				   S3C2410_LCDCON5_INVVLINE |
149 				   S3C2410_LCDCON5_INVVFRAME |
150 				   S3C2410_LCDCON5_PWREN),
151 	},
152 	/* The VGA shield can outout at several resolutions. All share
153 	 * the same timings, however, anything smaller than 1024x768
154 	 * will only be displayed in the top left corner of a 1024x768
155 	 * XGA output unless you add optional dip switches to the shield.
156 	 * Therefore timings for other resolutions have been omitted here.
157 	 */
158 	[2] = {
159 		_LCD_DECLARE(
160 			10,
161 			1024, 1, 2, 2,		/* y timing */
162 			768, 200, 16, 16,	/* x timing */
163 			24),	/* refresh rate, maximum stable,
164 				 * tested with the FPGA shield
165 				 */
166 		.lcdcon5	= (S3C2410_LCDCON5_FRM565 |
167 				   S3C2410_LCDCON5_HWSWP),
168 	},
169 	/* mini2440 + 3.5" TFT (LCD-W35i, LQ035Q1DG06 type) + touchscreen*/
170 	[3] = {
171 		_LCD_DECLARE(
172 			/* clock */
173 			7,
174 			/* xres, margin_right, margin_left, hsync */
175 			320, 68, 66, 4,
176 			/* yres, margin_top, margin_bottom, vsync */
177 			240, 4, 4, 9,
178 			/* refresh rate */
179 			60),
180 		.lcdcon5	= (S3C2410_LCDCON5_FRM565 |
181 				   S3C2410_LCDCON5_INVVDEN |
182 				   S3C2410_LCDCON5_INVVFRAME |
183 				   S3C2410_LCDCON5_INVVLINE |
184 				   S3C2410_LCDCON5_INVVCLK |
185 				   S3C2410_LCDCON5_HWSWP),
186 	},
187 };
188 
189 /* todo - put into gpio header */
190 
191 #define S3C2410_GPCCON_MASK(x)	(3 << ((x) * 2))
192 #define S3C2410_GPDCON_MASK(x)	(3 << ((x) * 2))
193 
194 static struct s3c2410fb_mach_info mini2440_fb_info __initdata = {
195 	.displays	 = &mini2440_lcd_cfg[0], /* not constant! see init */
196 	.num_displays	 = 1,
197 	.default_display = 0,
198 
199 	/* Enable VD[2..7], VD[10..15], VD[18..23] and VCLK, syncs, VDEN
200 	 * and disable the pull down resistors on pins we are using for LCD
201 	 * data.
202 	 */
203 
204 	.gpcup		= (0xf << 1) | (0x3f << 10),
205 
206 	.gpccon		= (S3C2410_GPC1_VCLK   | S3C2410_GPC2_VLINE |
207 			   S3C2410_GPC3_VFRAME | S3C2410_GPC4_VM |
208 			   S3C2410_GPC10_VD2   | S3C2410_GPC11_VD3 |
209 			   S3C2410_GPC12_VD4   | S3C2410_GPC13_VD5 |
210 			   S3C2410_GPC14_VD6   | S3C2410_GPC15_VD7),
211 
212 	.gpccon_mask	= (S3C2410_GPCCON_MASK(1)  | S3C2410_GPCCON_MASK(2)  |
213 			   S3C2410_GPCCON_MASK(3)  | S3C2410_GPCCON_MASK(4)  |
214 			   S3C2410_GPCCON_MASK(10) | S3C2410_GPCCON_MASK(11) |
215 			   S3C2410_GPCCON_MASK(12) | S3C2410_GPCCON_MASK(13) |
216 			   S3C2410_GPCCON_MASK(14) | S3C2410_GPCCON_MASK(15)),
217 
218 	.gpdup		= (0x3f << 2) | (0x3f << 10),
219 
220 	.gpdcon		= (S3C2410_GPD2_VD10  | S3C2410_GPD3_VD11 |
221 			   S3C2410_GPD4_VD12  | S3C2410_GPD5_VD13 |
222 			   S3C2410_GPD6_VD14  | S3C2410_GPD7_VD15 |
223 			   S3C2410_GPD10_VD18 | S3C2410_GPD11_VD19 |
224 			   S3C2410_GPD12_VD20 | S3C2410_GPD13_VD21 |
225 			   S3C2410_GPD14_VD22 | S3C2410_GPD15_VD23),
226 
227 	.gpdcon_mask	= (S3C2410_GPDCON_MASK(2)  | S3C2410_GPDCON_MASK(3) |
228 			   S3C2410_GPDCON_MASK(4)  | S3C2410_GPDCON_MASK(5) |
229 			   S3C2410_GPDCON_MASK(6)  | S3C2410_GPDCON_MASK(7) |
230 			   S3C2410_GPDCON_MASK(10) | S3C2410_GPDCON_MASK(11)|
231 			   S3C2410_GPDCON_MASK(12) | S3C2410_GPDCON_MASK(13)|
232 			   S3C2410_GPDCON_MASK(14) | S3C2410_GPDCON_MASK(15)),
233 };
234 
235 /* MMC/SD  */
236 
237 static struct s3c24xx_mci_pdata mini2440_mmc_cfg __initdata = {
238 	.wprotect_invert	= 1,
239 	.set_power		= NULL,
240 	.ocr_avail		= MMC_VDD_32_33|MMC_VDD_33_34,
241 };
242 
243 static struct gpiod_lookup_table mini2440_mmc_gpio_table = {
244 	.dev_id = "s3c2410-sdi",
245 	.table = {
246 		/* Card detect S3C2410_GPG(8) */
247 		GPIO_LOOKUP("GPIOG", 8, "cd", GPIO_ACTIVE_LOW),
248 		/* Write protect S3C2410_GPH(8) */
249 		GPIO_LOOKUP("GPIOH", 8, "wp", GPIO_ACTIVE_HIGH),
250 		{ },
251 	},
252 };
253 
254 /* NAND Flash on MINI2440 board */
255 
256 static struct mtd_partition mini2440_default_nand_part[] __initdata = {
257 	[0] = {
258 		.name	= "u-boot",
259 		.size	= SZ_256K,
260 		.offset	= 0,
261 	},
262 	[1] = {
263 		.name	= "u-boot-env",
264 		.size	= SZ_128K,
265 		.offset	= SZ_256K,
266 	},
267 	[2] = {
268 		.name	= "kernel",
269 		/* 5 megabytes, for a kernel with no modules
270 		 * or a uImage with a ramdisk attached
271 		 */
272 		.size	= 0x00500000,
273 		.offset	= SZ_256K + SZ_128K,
274 	},
275 	[3] = {
276 		.name	= "root",
277 		.offset	= SZ_256K + SZ_128K + 0x00500000,
278 		.size	= MTDPART_SIZ_FULL,
279 	},
280 };
281 
282 static struct s3c2410_nand_set mini2440_nand_sets[] __initdata = {
283 	[0] = {
284 		.name		= "nand",
285 		.nr_chips	= 1,
286 		.nr_partitions	= ARRAY_SIZE(mini2440_default_nand_part),
287 		.partitions	= mini2440_default_nand_part,
288 		.flash_bbt	= 1, /* we use u-boot to create a BBT */
289 	},
290 };
291 
292 static struct s3c2410_platform_nand mini2440_nand_info __initdata = {
293 	.tacls		= 0,
294 	.twrph0		= 25,
295 	.twrph1		= 15,
296 	.nr_sets	= ARRAY_SIZE(mini2440_nand_sets),
297 	.sets		= mini2440_nand_sets,
298 	.ignore_unset_ecc = 1,
299 	.ecc_mode	= NAND_ECC_HW,
300 };
301 
302 /* DM9000AEP 10/100 ethernet controller */
303 
304 static struct resource mini2440_dm9k_resource[] = {
305 	[0] = DEFINE_RES_MEM(MACH_MINI2440_DM9K_BASE, 4),
306 	[1] = DEFINE_RES_MEM(MACH_MINI2440_DM9K_BASE + 4, 4),
307 	[2] = DEFINE_RES_NAMED(IRQ_EINT7, 1, NULL, IORESOURCE_IRQ
308 						| IORESOURCE_IRQ_HIGHEDGE),
309 };
310 
311 /*
312  * The DM9000 has no eeprom, and it's MAC address is set by
313  * the bootloader before starting the kernel.
314  */
315 static struct dm9000_plat_data mini2440_dm9k_pdata = {
316 	.flags		= (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
317 };
318 
319 static struct platform_device mini2440_device_eth = {
320 	.name		= "dm9000",
321 	.id		= -1,
322 	.num_resources	= ARRAY_SIZE(mini2440_dm9k_resource),
323 	.resource	= mini2440_dm9k_resource,
324 	.dev		= {
325 		.platform_data	= &mini2440_dm9k_pdata,
326 	},
327 };
328 
329 /*  CON5
330  *	+--+	 /-----\
331  *	|  |    |	|
332  *	|  |	|  BAT	|
333  *	|  |	 \_____/
334  *	|  |
335  *	|  |  +----+  +----+
336  *	|  |  | K5 |  | K1 |
337  *	|  |  +----+  +----+
338  *	|  |  +----+  +----+
339  *	|  |  | K4 |  | K2 |
340  *	|  |  +----+  +----+
341  *	|  |  +----+  +----+
342  *	|  |  | K6 |  | K3 |
343  *	|  |  +----+  +----+
344  *	  .....
345  */
346 static struct gpio_keys_button mini2440_buttons[] = {
347 	{
348 		.gpio		= S3C2410_GPG(0),		/* K1 */
349 		.code		= KEY_F1,
350 		.desc		= "Button 1",
351 		.active_low	= 1,
352 	},
353 	{
354 		.gpio		= S3C2410_GPG(3),		/* K2 */
355 		.code		= KEY_F2,
356 		.desc		= "Button 2",
357 		.active_low	= 1,
358 	},
359 	{
360 		.gpio		= S3C2410_GPG(5),		/* K3 */
361 		.code		= KEY_F3,
362 		.desc		= "Button 3",
363 		.active_low	= 1,
364 	},
365 	{
366 		.gpio		= S3C2410_GPG(6),		/* K4 */
367 		.code		= KEY_POWER,
368 		.desc		= "Power",
369 		.active_low	= 1,
370 	},
371 	{
372 		.gpio		= S3C2410_GPG(7),		/* K5 */
373 		.code		= KEY_F5,
374 		.desc		= "Button 5",
375 		.active_low	= 1,
376 	},
377 #if 0
378 	/* this pin is also known as TCLK1 and seems to already
379 	 * marked as "in use" somehow in the kernel -- possibly wrongly
380 	 */
381 	{
382 		.gpio		= S3C2410_GPG(11),	/* K6 */
383 		.code		= KEY_F6,
384 		.desc		= "Button 6",
385 		.active_low	= 1,
386 	},
387 #endif
388 };
389 
390 static struct gpio_keys_platform_data mini2440_button_data = {
391 	.buttons	= mini2440_buttons,
392 	.nbuttons	= ARRAY_SIZE(mini2440_buttons),
393 };
394 
395 static struct platform_device mini2440_button_device = {
396 	.name		= "gpio-keys",
397 	.id		= -1,
398 	.dev		= {
399 		.platform_data	= &mini2440_button_data,
400 	}
401 };
402 
403 /* LEDS */
404 
405 static struct s3c24xx_led_platdata mini2440_led1_pdata = {
406 	.name		= "led1",
407 	.gpio		= S3C2410_GPB(5),
408 	.flags		= S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
409 	.def_trigger	= "heartbeat",
410 };
411 
412 static struct s3c24xx_led_platdata mini2440_led2_pdata = {
413 	.name		= "led2",
414 	.gpio		= S3C2410_GPB(6),
415 	.flags		= S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
416 	.def_trigger	= "nand-disk",
417 };
418 
419 static struct s3c24xx_led_platdata mini2440_led3_pdata = {
420 	.name		= "led3",
421 	.gpio		= S3C2410_GPB(7),
422 	.flags		= S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
423 	.def_trigger	= "mmc0",
424 };
425 
426 static struct s3c24xx_led_platdata mini2440_led4_pdata = {
427 	.name		= "led4",
428 	.gpio		= S3C2410_GPB(8),
429 	.flags		= S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
430 	.def_trigger	= "",
431 };
432 
433 static struct s3c24xx_led_platdata mini2440_led_backlight_pdata = {
434 	.name		= "backlight",
435 	.gpio		= S3C2410_GPG(4),
436 	.def_trigger	= "backlight",
437 };
438 
439 static struct platform_device mini2440_led1 = {
440 	.name		= "s3c24xx_led",
441 	.id		= 1,
442 	.dev		= {
443 		.platform_data	= &mini2440_led1_pdata,
444 	},
445 };
446 
447 static struct platform_device mini2440_led2 = {
448 	.name		= "s3c24xx_led",
449 	.id		= 2,
450 	.dev		= {
451 		.platform_data	= &mini2440_led2_pdata,
452 	},
453 };
454 
455 static struct platform_device mini2440_led3 = {
456 	.name		= "s3c24xx_led",
457 	.id		= 3,
458 	.dev		= {
459 		.platform_data	= &mini2440_led3_pdata,
460 	},
461 };
462 
463 static struct platform_device mini2440_led4 = {
464 	.name		= "s3c24xx_led",
465 	.id		= 4,
466 	.dev		= {
467 		.platform_data	= &mini2440_led4_pdata,
468 	},
469 };
470 
471 static struct platform_device mini2440_led_backlight = {
472 	.name		= "s3c24xx_led",
473 	.id		= 5,
474 	.dev		= {
475 		.platform_data	= &mini2440_led_backlight_pdata,
476 	},
477 };
478 
479 /* AUDIO */
480 
481 static struct s3c24xx_uda134x_platform_data mini2440_audio_pins = {
482 	.l3_clk = S3C2410_GPB(4),
483 	.l3_mode = S3C2410_GPB(2),
484 	.l3_data = S3C2410_GPB(3),
485 	.model = UDA134X_UDA1341
486 };
487 
488 static struct platform_device mini2440_audio = {
489 	.name		= "s3c24xx_uda134x",
490 	.id		= 0,
491 	.dev		= {
492 		.platform_data	= &mini2440_audio_pins,
493 	},
494 };
495 
496 /*
497  * I2C devices
498  */
499 static const struct property_entry mini2440_at24_properties[] = {
500 	PROPERTY_ENTRY_U32("pagesize", 16),
501 	{ }
502 };
503 
504 static struct i2c_board_info mini2440_i2c_devs[] __initdata = {
505 	{
506 		I2C_BOARD_INFO("24c08", 0x50),
507 		.properties = mini2440_at24_properties,
508 	},
509 };
510 
511 static struct uda134x_platform_data s3c24xx_uda134x = {
512 	.l3 = {
513 		.gpio_clk = S3C2410_GPB(4),
514 		.gpio_data = S3C2410_GPB(3),
515 		.gpio_mode = S3C2410_GPB(2),
516 		.use_gpios = 1,
517 		.data_hold = 1,
518 		.data_setup = 1,
519 		.clock_high = 1,
520 		.mode_hold = 1,
521 		.mode = 1,
522 		.mode_setup = 1,
523 	},
524 	.model = UDA134X_UDA1341,
525 };
526 
527 static struct platform_device uda1340_codec = {
528 		.name = "uda134x-codec",
529 		.id = -1,
530 		.dev = {
531 			.platform_data	= &s3c24xx_uda134x,
532 		},
533 };
534 
535 static struct platform_device *mini2440_devices[] __initdata = {
536 	&s3c_device_ohci,
537 	&s3c_device_wdt,
538 	&s3c_device_i2c0,
539 	&s3c_device_rtc,
540 	&s3c_device_usbgadget,
541 	&mini2440_device_eth,
542 	&mini2440_led1,
543 	&mini2440_led2,
544 	&mini2440_led3,
545 	&mini2440_led4,
546 	&mini2440_button_device,
547 	&s3c_device_nand,
548 	&s3c_device_sdi,
549 	&s3c2440_device_dma,
550 	&s3c_device_iis,
551 	&uda1340_codec,
552 	&mini2440_audio,
553 };
554 
mini2440_map_io(void)555 static void __init mini2440_map_io(void)
556 {
557 	s3c24xx_init_io(mini2440_iodesc, ARRAY_SIZE(mini2440_iodesc));
558 	s3c24xx_init_uarts(mini2440_uartcfgs, ARRAY_SIZE(mini2440_uartcfgs));
559 	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
560 }
561 
mini2440_init_time(void)562 static void __init mini2440_init_time(void)
563 {
564 	s3c2440_init_clocks(12000000);
565 	samsung_timer_init();
566 }
567 
568 /*
569  * mini2440_features string
570  *
571  * t = Touchscreen present
572  * b = backlight control
573  * c = camera [TODO]
574  * 0-9 LCD configuration
575  *
576  */
577 static char mini2440_features_str[12] __initdata = "0tb";
578 
mini2440_features_setup(char * str)579 static int __init mini2440_features_setup(char *str)
580 {
581 	if (str)
582 		strlcpy(mini2440_features_str, str,
583 			sizeof(mini2440_features_str));
584 	return 1;
585 }
586 
587 __setup("mini2440=", mini2440_features_setup);
588 
589 #define FEATURE_SCREEN (1 << 0)
590 #define FEATURE_BACKLIGHT (1 << 1)
591 #define FEATURE_TOUCH (1 << 2)
592 #define FEATURE_CAMERA (1 << 3)
593 
594 struct mini2440_features_t {
595 	int count;
596 	int done;
597 	int lcd_index;
598 	struct platform_device *optional[8];
599 };
600 
mini2440_parse_features(struct mini2440_features_t * features,const char * features_str)601 static void __init mini2440_parse_features(
602 		struct mini2440_features_t *features,
603 		const char *features_str)
604 {
605 	const char *fp = features_str;
606 
607 	features->count = 0;
608 	features->done = 0;
609 	features->lcd_index = -1;
610 
611 	while (*fp) {
612 		char f = *fp++;
613 
614 		switch (f) {
615 		case '0'...'9':	/* tft screen */
616 			if (features->done & FEATURE_SCREEN) {
617 				pr_info("MINI2440: '%c' ignored, screen type already set\n",
618 					f);
619 			} else {
620 				int li = f - '0';
621 
622 				if (li >= ARRAY_SIZE(mini2440_lcd_cfg))
623 					pr_info("MINI2440: '%c' out of range LCD mode\n",
624 						f);
625 				else {
626 					features->optional[features->count++] =
627 							&s3c_device_lcd;
628 					features->lcd_index = li;
629 				}
630 			}
631 			features->done |= FEATURE_SCREEN;
632 			break;
633 		case 'b':
634 			if (features->done & FEATURE_BACKLIGHT)
635 				pr_info("MINI2440: '%c' ignored, backlight already set\n",
636 					f);
637 			else {
638 				features->optional[features->count++] =
639 						&mini2440_led_backlight;
640 			}
641 			features->done |= FEATURE_BACKLIGHT;
642 			break;
643 		case 't':
644 			pr_info("MINI2440: '%c' ignored, touchscreen not compiled in\n",
645 				f);
646 			break;
647 		case 'c':
648 			if (features->done & FEATURE_CAMERA)
649 				pr_info("MINI2440: '%c' ignored, camera already registered\n",
650 					f);
651 			else
652 				features->optional[features->count++] =
653 					&s3c_device_camif;
654 			features->done |= FEATURE_CAMERA;
655 			break;
656 		}
657 	}
658 }
659 
mini2440_init(void)660 static void __init mini2440_init(void)
661 {
662 	struct mini2440_features_t features = { 0 };
663 	int i;
664 
665 	pr_info("MINI2440: Option string mini2440=%s\n",
666 			mini2440_features_str);
667 
668 	/* Parse the feature string */
669 	mini2440_parse_features(&features, mini2440_features_str);
670 
671 	/* turn LCD on */
672 	s3c_gpio_cfgpin(S3C2410_GPC(0), S3C2410_GPC0_LEND);
673 
674 	/* Turn the backlight early on */
675 	WARN_ON(gpio_request_one(S3C2410_GPG(4), GPIOF_OUT_INIT_HIGH, NULL));
676 	gpio_free(S3C2410_GPG(4));
677 
678 	/* remove pullup on optional PWM backlight -- unused on 3.5 and 7"s */
679 	gpio_request_one(S3C2410_GPB(1), GPIOF_IN, NULL);
680 	s3c_gpio_setpull(S3C2410_GPB(1), S3C_GPIO_PULL_UP);
681 	gpio_free(S3C2410_GPB(1));
682 
683 	/* mark the key as input, without pullups (there is one on the board) */
684 	for (i = 0; i < ARRAY_SIZE(mini2440_buttons); i++) {
685 		s3c_gpio_setpull(mini2440_buttons[i].gpio, S3C_GPIO_PULL_UP);
686 		s3c_gpio_cfgpin(mini2440_buttons[i].gpio, S3C2410_GPIO_INPUT);
687 	}
688 	if (features.lcd_index != -1) {
689 		int li;
690 
691 		mini2440_fb_info.displays =
692 			&mini2440_lcd_cfg[features.lcd_index];
693 
694 		pr_info("MINI2440: LCD");
695 		for (li = 0; li < ARRAY_SIZE(mini2440_lcd_cfg); li++)
696 			if (li == features.lcd_index)
697 				pr_cont(" [%d:%dx%d]", li,
698 					mini2440_lcd_cfg[li].width,
699 					mini2440_lcd_cfg[li].height);
700 			else
701 				pr_cont(" %d:%dx%d", li,
702 					mini2440_lcd_cfg[li].width,
703 					mini2440_lcd_cfg[li].height);
704 		pr_cont("\n");
705 		s3c24xx_fb_set_platdata(&mini2440_fb_info);
706 	}
707 
708 	s3c24xx_udc_set_platdata(&mini2440_udc_cfg);
709 	gpiod_add_lookup_table(&mini2440_mmc_gpio_table);
710 	s3c24xx_mci_set_platdata(&mini2440_mmc_cfg);
711 	s3c_nand_set_platdata(&mini2440_nand_info);
712 	s3c_i2c0_set_platdata(NULL);
713 
714 	i2c_register_board_info(0, mini2440_i2c_devs,
715 				ARRAY_SIZE(mini2440_i2c_devs));
716 
717 	platform_add_devices(mini2440_devices, ARRAY_SIZE(mini2440_devices));
718 
719 	if (features.count)	/* the optional features */
720 		platform_add_devices(features.optional, features.count);
721 
722 }
723 
724 
725 MACHINE_START(MINI2440, "MINI2440")
726 	/* Maintainer: Michel Pollet <buserror@gmail.com> */
727 	.atag_offset	= 0x100,
728 	.map_io		= mini2440_map_io,
729 	.init_machine	= mini2440_init,
730 	.init_irq	= s3c2440_init_irq,
731 	.init_time	= mini2440_init_time,
732 MACHINE_END
733