xref: /linux/arch/arm/mach-omap1/board-ams-delta.c (revision 8a922b7728a93d837954315c98b84f6b78de0c4f) 
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * linux/arch/arm/mach-omap1/board-ams-delta.c
4  *
5  * Modified from board-generic.c
6  *
7  * Board specific inits for the Amstrad E3 (codename Delta) videophone
8  *
9  * Copyright (C) 2006 Jonathan McDowell <noodles@earth.li>
10  */
11 #include <linux/gpio/driver.h>
12 #include <linux/gpio/machine.h>
13 #include <linux/gpio/consumer.h>
14 #include <linux/gpio.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/input.h>
18 #include <linux/interrupt.h>
19 #include <linux/leds.h>
20 #include <linux/mtd/nand-gpio.h>
21 #include <linux/mtd/partitions.h>
22 #include <linux/platform_device.h>
23 #include <linux/regulator/consumer.h>
24 #include <linux/regulator/fixed.h>
25 #include <linux/regulator/machine.h>
26 #include <linux/serial_8250.h>
27 #include <linux/export.h>
28 #include <linux/omapfb.h>
29 #include <linux/io.h>
30 #include <linux/platform_data/gpio-omap.h>
31 #include <linux/soc/ti/omap1-mux.h>
32 
33 #include <asm/serial.h>
34 #include <asm/mach-types.h>
35 #include <asm/mach/arch.h>
36 #include <asm/mach/map.h>
37 
38 #include <linux/platform_data/keypad-omap.h>
39 
40 #include "hardware.h"
41 #include "usb.h"
42 #include "ams-delta-fiq.h"
43 #include "board-ams-delta.h"
44 #include "iomap.h"
45 #include "common.h"
46 
47 static const unsigned int ams_delta_keymap[] = {
48 	KEY(0, 0, KEY_F1),		/* Advert    */
49 
50 	KEY(0, 3, KEY_COFFEE),		/* Games     */
51 	KEY(0, 2, KEY_QUESTION),	/* Directory */
52 	KEY(2, 3, KEY_CONNECT),		/* Internet  */
53 	KEY(1, 2, KEY_SHOP),		/* Services  */
54 	KEY(1, 1, KEY_PHONE),		/* VoiceMail */
55 
56 	KEY(0, 1, KEY_DELETE),		/* Delete    */
57 	KEY(2, 2, KEY_PLAY),		/* Play      */
58 	KEY(1, 0, KEY_PAGEUP),		/* Up        */
59 	KEY(1, 3, KEY_PAGEDOWN),	/* Down      */
60 	KEY(2, 0, KEY_EMAIL),		/* ReadEmail */
61 	KEY(2, 1, KEY_STOP),		/* Stop      */
62 
63 	/* Numeric keypad portion */
64 	KEY(0, 7, KEY_KP1),
65 	KEY(0, 6, KEY_KP2),
66 	KEY(0, 5, KEY_KP3),
67 	KEY(1, 7, KEY_KP4),
68 	KEY(1, 6, KEY_KP5),
69 	KEY(1, 5, KEY_KP6),
70 	KEY(2, 7, KEY_KP7),
71 	KEY(2, 6, KEY_KP8),
72 	KEY(2, 5, KEY_KP9),
73 	KEY(3, 6, KEY_KP0),
74 	KEY(3, 7, KEY_KPASTERISK),
75 	KEY(3, 5, KEY_KPDOT),		/* # key     */
76 	KEY(7, 2, KEY_NUMLOCK),		/* Mute      */
77 	KEY(7, 1, KEY_KPMINUS),		/* Recall    */
78 	KEY(6, 1, KEY_KPPLUS),		/* Redial    */
79 	KEY(7, 6, KEY_KPSLASH),		/* Handsfree */
80 	KEY(6, 0, KEY_ENTER),		/* Video     */
81 
82 	KEY(7, 4, KEY_CAMERA),		/* Photo     */
83 
84 	KEY(0, 4, KEY_F2),		/* Home      */
85 	KEY(1, 4, KEY_F3),		/* Office    */
86 	KEY(2, 4, KEY_F4),		/* Mobile    */
87 	KEY(7, 7, KEY_F5),		/* SMS       */
88 	KEY(7, 5, KEY_F6),		/* Email     */
89 
90 	/* QWERTY portion of keypad */
91 	KEY(3, 4, KEY_Q),
92 	KEY(3, 3, KEY_W),
93 	KEY(3, 2, KEY_E),
94 	KEY(3, 1, KEY_R),
95 	KEY(3, 0, KEY_T),
96 	KEY(4, 7, KEY_Y),
97 	KEY(4, 6, KEY_U),
98 	KEY(4, 5, KEY_I),
99 	KEY(4, 4, KEY_O),
100 	KEY(4, 3, KEY_P),
101 
102 	KEY(4, 2, KEY_A),
103 	KEY(4, 1, KEY_S),
104 	KEY(4, 0, KEY_D),
105 	KEY(5, 7, KEY_F),
106 	KEY(5, 6, KEY_G),
107 	KEY(5, 5, KEY_H),
108 	KEY(5, 4, KEY_J),
109 	KEY(5, 3, KEY_K),
110 	KEY(5, 2, KEY_L),
111 
112 	KEY(5, 1, KEY_Z),
113 	KEY(5, 0, KEY_X),
114 	KEY(6, 7, KEY_C),
115 	KEY(6, 6, KEY_V),
116 	KEY(6, 5, KEY_B),
117 	KEY(6, 4, KEY_N),
118 	KEY(6, 3, KEY_M),
119 	KEY(6, 2, KEY_SPACE),
120 
121 	KEY(7, 0, KEY_LEFTSHIFT),	/* Vol up    */
122 	KEY(7, 3, KEY_LEFTCTRL),	/* Vol down  */
123 };
124 
125 #define LATCH1_PHYS	0x01000000
126 #define LATCH1_VIRT	0xEA000000
127 #define MODEM_PHYS	0x04000000
128 #define MODEM_VIRT	0xEB000000
129 #define LATCH2_PHYS	0x08000000
130 #define LATCH2_VIRT	0xEC000000
131 
132 static struct map_desc ams_delta_io_desc[] __initdata = {
133 	/* AMS_DELTA_LATCH1 */
134 	{
135 		.virtual	= LATCH1_VIRT,
136 		.pfn		= __phys_to_pfn(LATCH1_PHYS),
137 		.length		= 0x01000000,
138 		.type		= MT_DEVICE
139 	},
140 	/* AMS_DELTA_LATCH2 */
141 	{
142 		.virtual	= LATCH2_VIRT,
143 		.pfn		= __phys_to_pfn(LATCH2_PHYS),
144 		.length		= 0x01000000,
145 		.type		= MT_DEVICE
146 	},
147 	/* AMS_DELTA_MODEM */
148 	{
149 		.virtual	= MODEM_VIRT,
150 		.pfn		= __phys_to_pfn(MODEM_PHYS),
151 		.length		= 0x01000000,
152 		.type		= MT_DEVICE
153 	}
154 };
155 
156 static const struct omap_lcd_config ams_delta_lcd_config __initconst = {
157 	.ctrl_name	= "internal",
158 };
159 
160 static struct omap_usb_config ams_delta_usb_config __initdata = {
161 	.register_host	= 1,
162 	.hmc_mode	= 16,
163 	.pins[0]	= 2,
164 };
165 
166 #define LATCH1_NGPIO		8
167 
168 static struct resource latch1_resources[] = {
169 	[0] = {
170 		.name	= "dat",
171 		.start	= LATCH1_PHYS,
172 		.end	= LATCH1_PHYS + (LATCH1_NGPIO - 1) / 8,
173 		.flags	= IORESOURCE_MEM,
174 	},
175 };
176 
177 #define LATCH1_LABEL	"latch1"
178 
179 static struct bgpio_pdata latch1_pdata = {
180 	.label	= LATCH1_LABEL,
181 	.base	= -1,
182 	.ngpio	= LATCH1_NGPIO,
183 };
184 
185 static struct platform_device latch1_gpio_device = {
186 	.name		= "basic-mmio-gpio",
187 	.id		= 0,
188 	.resource	= latch1_resources,
189 	.num_resources	= ARRAY_SIZE(latch1_resources),
190 	.dev		= {
191 		.platform_data	= &latch1_pdata,
192 	},
193 };
194 
195 #define LATCH1_PIN_LED_CAMERA		0
196 #define LATCH1_PIN_LED_ADVERT		1
197 #define LATCH1_PIN_LED_MAIL		2
198 #define LATCH1_PIN_LED_HANDSFREE	3
199 #define LATCH1_PIN_LED_VOICEMAIL	4
200 #define LATCH1_PIN_LED_VOICE		5
201 #define LATCH1_PIN_DOCKIT1		6
202 #define LATCH1_PIN_DOCKIT2		7
203 
204 #define LATCH2_NGPIO			16
205 
206 static struct resource latch2_resources[] = {
207 	[0] = {
208 		.name	= "dat",
209 		.start	= LATCH2_PHYS,
210 		.end	= LATCH2_PHYS + (LATCH2_NGPIO - 1) / 8,
211 		.flags	= IORESOURCE_MEM,
212 	},
213 };
214 
215 #define LATCH2_LABEL	"latch2"
216 
217 static struct bgpio_pdata latch2_pdata = {
218 	.label	= LATCH2_LABEL,
219 	.base	= -1,
220 	.ngpio	= LATCH2_NGPIO,
221 };
222 
223 static struct platform_device latch2_gpio_device = {
224 	.name		= "basic-mmio-gpio",
225 	.id		= 1,
226 	.resource	= latch2_resources,
227 	.num_resources	= ARRAY_SIZE(latch2_resources),
228 	.dev		= {
229 		.platform_data	= &latch2_pdata,
230 	},
231 };
232 
233 #define LATCH2_PIN_LCD_VBLEN		0
234 #define LATCH2_PIN_LCD_NDISP		1
235 #define LATCH2_PIN_NAND_NCE		2
236 #define LATCH2_PIN_NAND_NRE		3
237 #define LATCH2_PIN_NAND_NWP		4
238 #define LATCH2_PIN_NAND_NWE		5
239 #define LATCH2_PIN_NAND_ALE		6
240 #define LATCH2_PIN_NAND_CLE		7
241 #define LATCH2_PIN_KEYBRD_PWR		8
242 #define LATCH2_PIN_KEYBRD_DATAOUT	9
243 #define LATCH2_PIN_SCARD_RSTIN		10
244 #define LATCH2_PIN_SCARD_CMDVCC		11
245 #define LATCH2_PIN_MODEM_NRESET		12
246 #define LATCH2_PIN_MODEM_CODEC		13
247 #define LATCH2_PIN_HANDSFREE_MUTE	14
248 #define LATCH2_PIN_HANDSET_MUTE		15
249 
250 static struct regulator_consumer_supply modem_nreset_consumers[] = {
251 	REGULATOR_SUPPLY("RESET#", "serial8250.1"),
252 	REGULATOR_SUPPLY("POR", "cx20442-codec"),
253 };
254 
255 static struct regulator_init_data modem_nreset_data = {
256 	.constraints		= {
257 		.valid_ops_mask		= REGULATOR_CHANGE_STATUS,
258 		.boot_on		= 1,
259 	},
260 	.num_consumer_supplies	= ARRAY_SIZE(modem_nreset_consumers),
261 	.consumer_supplies	= modem_nreset_consumers,
262 };
263 
264 static struct fixed_voltage_config modem_nreset_config = {
265 	.supply_name		= "modem_nreset",
266 	.microvolts		= 3300000,
267 	.startup_delay		= 25000,
268 	.enabled_at_boot	= 1,
269 	.init_data		= &modem_nreset_data,
270 };
271 
272 static struct platform_device modem_nreset_device = {
273 	.name	= "reg-fixed-voltage",
274 	.id	= -1,
275 	.dev	= {
276 		.platform_data	= &modem_nreset_config,
277 	},
278 };
279 
280 static struct gpiod_lookup_table ams_delta_nreset_gpiod_table = {
281 	.dev_id = "reg-fixed-voltage",
282 	.table = {
283 		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_NRESET,
284 			    NULL, GPIO_ACTIVE_HIGH),
285 		{ },
286 	},
287 };
288 
289 struct modem_private_data {
290 	struct regulator *regulator;
291 };
292 
293 static struct modem_private_data modem_priv;
294 
295 /*
296  * Define partitions for flash device
297  */
298 
299 static struct mtd_partition partition_info[] = {
300 	{ .name		= "Kernel",
301 	  .offset	= 0,
302 	  .size		= 3 * SZ_1M + SZ_512K },
303 	{ .name		= "u-boot",
304 	  .offset	= 3 * SZ_1M + SZ_512K,
305 	  .size		= SZ_256K },
306 	{ .name		= "u-boot params",
307 	  .offset	= 3 * SZ_1M + SZ_512K + SZ_256K,
308 	  .size		= SZ_256K },
309 	{ .name		= "Amstrad LDR",
310 	  .offset	= 4 * SZ_1M,
311 	  .size		= SZ_256K },
312 	{ .name		= "File system",
313 	  .offset	= 4 * SZ_1M + 1 * SZ_256K,
314 	  .size		= 27 * SZ_1M },
315 	{ .name		= "PBL reserved",
316 	  .offset	= 32 * SZ_1M - 3 * SZ_256K,
317 	  .size		=  3 * SZ_256K },
318 };
319 
320 static struct gpio_nand_platdata nand_platdata = {
321 	.parts		= partition_info,
322 	.num_parts	= ARRAY_SIZE(partition_info),
323 };
324 
325 static struct platform_device ams_delta_nand_device = {
326 	.name	= "ams-delta-nand",
327 	.id	= -1,
328 	.dev	= {
329 		.platform_data = &nand_platdata,
330 	},
331 };
332 
333 #define OMAP_GPIO_LABEL		"gpio-0-15"
334 #define OMAP_MPUIO_LABEL	"mpuio"
335 
336 static struct gpiod_lookup_table ams_delta_nand_gpio_table = {
337 	.table = {
338 		GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_NAND_RB, "rdy",
339 			    0),
340 		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NCE, "nce",
341 			    GPIO_ACTIVE_LOW),
342 		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NRE, "nre",
343 			    GPIO_ACTIVE_LOW),
344 		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWP, "nwp",
345 			    GPIO_ACTIVE_LOW),
346 		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWE, "nwe",
347 			    GPIO_ACTIVE_LOW),
348 		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_ALE, "ale", 0),
349 		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_CLE, "cle", 0),
350 		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 0, "data", 0, 0),
351 		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 1, "data", 1, 0),
352 		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 2, "data", 2, 0),
353 		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 3, "data", 3, 0),
354 		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 4, "data", 4, 0),
355 		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 5, "data", 5, 0),
356 		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 6, "data", 6, 0),
357 		GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 7, "data", 7, 0),
358 		{ },
359 	},
360 };
361 
362 static struct resource ams_delta_kp_resources[] = {
363 	[0] = {
364 		.start	= INT_KEYBOARD,
365 		.end	= INT_KEYBOARD,
366 		.flags	= IORESOURCE_IRQ,
367 	},
368 };
369 
370 static const struct matrix_keymap_data ams_delta_keymap_data = {
371 	.keymap		= ams_delta_keymap,
372 	.keymap_size	= ARRAY_SIZE(ams_delta_keymap),
373 };
374 
375 static struct omap_kp_platform_data ams_delta_kp_data = {
376 	.rows		= 8,
377 	.cols		= 8,
378 	.keymap_data	= &ams_delta_keymap_data,
379 	.delay		= 9,
380 };
381 
382 static struct platform_device ams_delta_kp_device = {
383 	.name		= "omap-keypad",
384 	.id		= -1,
385 	.dev		= {
386 		.platform_data = &ams_delta_kp_data,
387 	},
388 	.num_resources	= ARRAY_SIZE(ams_delta_kp_resources),
389 	.resource	= ams_delta_kp_resources,
390 };
391 
392 static struct platform_device ams_delta_lcd_device = {
393 	.name	= "lcd_ams_delta",
394 	.id	= -1,
395 };
396 
397 static struct gpiod_lookup_table ams_delta_lcd_gpio_table = {
398 	.table = {
399 		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_VBLEN, "vblen", 0),
400 		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_NDISP, "ndisp", 0),
401 		{ },
402 	},
403 };
404 
405 static struct gpio_led gpio_leds[] __initdata = {
406 	[LATCH1_PIN_LED_CAMERA] = {
407 		.name		 = "camera",
408 		.default_state	 = LEDS_GPIO_DEFSTATE_OFF,
409 	},
410 	[LATCH1_PIN_LED_ADVERT] = {
411 		.name		 = "advert",
412 		.default_state	 = LEDS_GPIO_DEFSTATE_OFF,
413 	},
414 	[LATCH1_PIN_LED_MAIL] = {
415 		.name		 = "email",
416 		.default_state	 = LEDS_GPIO_DEFSTATE_OFF,
417 	},
418 	[LATCH1_PIN_LED_HANDSFREE] = {
419 		.name		 = "handsfree",
420 		.default_state	 = LEDS_GPIO_DEFSTATE_OFF,
421 	},
422 	[LATCH1_PIN_LED_VOICEMAIL] = {
423 		.name		 = "voicemail",
424 		.default_state	 = LEDS_GPIO_DEFSTATE_OFF,
425 	},
426 	[LATCH1_PIN_LED_VOICE] = {
427 		.name		 = "voice",
428 		.default_state	 = LEDS_GPIO_DEFSTATE_OFF,
429 	},
430 };
431 
432 static const struct gpio_led_platform_data leds_pdata __initconst = {
433 	.leds		= gpio_leds,
434 	.num_leds	= ARRAY_SIZE(gpio_leds),
435 };
436 
437 static struct gpiod_lookup_table leds_gpio_table = {
438 	.table = {
439 		GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_CAMERA, NULL,
440 				LATCH1_PIN_LED_CAMERA, 0),
441 		GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_ADVERT, NULL,
442 				LATCH1_PIN_LED_ADVERT, 0),
443 		GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_MAIL, NULL,
444 				LATCH1_PIN_LED_MAIL, 0),
445 		GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_HANDSFREE, NULL,
446 				LATCH1_PIN_LED_HANDSFREE, 0),
447 		GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICEMAIL, NULL,
448 				LATCH1_PIN_LED_VOICEMAIL, 0),
449 		GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICE, NULL,
450 				LATCH1_PIN_LED_VOICE, 0),
451 		{ },
452 	},
453 };
454 
455 static struct platform_device ams_delta_audio_device = {
456 	.name   = "ams-delta-audio",
457 	.id     = -1,
458 };
459 
460 static struct gpiod_lookup_table ams_delta_audio_gpio_table = {
461 	.table = {
462 		GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_HOOK_SWITCH,
463 			    "hook_switch", 0),
464 		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_CODEC,
465 			    "modem_codec", 0),
466 		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSFREE_MUTE,
467 			    "handsfree_mute", 0),
468 		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSET_MUTE,
469 			    "handset_mute", 0),
470 		{ },
471 	},
472 };
473 
474 static struct platform_device cx20442_codec_device = {
475 	.name   = "cx20442-codec",
476 	.id     = -1,
477 };
478 
479 static struct resource ams_delta_serio_resources[] = {
480 	{
481 		.flags	= IORESOURCE_IRQ,
482 		/*
483 		 * Initialize IRQ resource with invalid IRQ number.
484 		 * It will be replaced with dynamically allocated GPIO IRQ
485 		 * obtained from GPIO chip as soon as the chip is available.
486 		 */
487 		.start	= -EINVAL,
488 		.end	= -EINVAL,
489 	},
490 };
491 
492 static struct platform_device ams_delta_serio_device = {
493 	.name		= "ams-delta-serio",
494 	.id		= PLATFORM_DEVID_NONE,
495 	.dev		= {
496 		/*
497 		 * Initialize .platform_data explicitly with NULL to
498 		 * indicate it is going to be used.  It will be replaced
499 		 * with FIQ buffer address as soon as FIQ is initialized.
500 		 */
501 		.platform_data = NULL,
502 	},
503 	.num_resources	= ARRAY_SIZE(ams_delta_serio_resources),
504 	.resource	= ams_delta_serio_resources,
505 };
506 
507 static struct regulator_consumer_supply keybrd_pwr_consumers[] = {
508 	/*
509 	 * Initialize supply .dev_name with NULL.  It will be replaced
510 	 * with serio dev_name() as soon as the serio device is registered.
511 	 */
512 	REGULATOR_SUPPLY("vcc", NULL),
513 };
514 
515 static struct regulator_init_data keybrd_pwr_initdata = {
516 	.constraints		= {
517 		.valid_ops_mask		= REGULATOR_CHANGE_STATUS,
518 	},
519 	.num_consumer_supplies	= ARRAY_SIZE(keybrd_pwr_consumers),
520 	.consumer_supplies	= keybrd_pwr_consumers,
521 };
522 
523 static struct fixed_voltage_config keybrd_pwr_config = {
524 	.supply_name		= "keybrd_pwr",
525 	.microvolts		= 5000000,
526 	.init_data		= &keybrd_pwr_initdata,
527 };
528 
529 static struct platform_device keybrd_pwr_device = {
530 	.name	= "reg-fixed-voltage",
531 	.id	= PLATFORM_DEVID_AUTO,
532 	.dev	= {
533 		.platform_data	= &keybrd_pwr_config,
534 	},
535 };
536 
537 static struct gpiod_lookup_table keybrd_pwr_gpio_table = {
538 	.table = {
539 		GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_KEYBRD_PWR, NULL,
540 			    GPIO_ACTIVE_HIGH),
541 		{ },
542 	},
543 };
544 
545 static struct platform_device *ams_delta_devices[] __initdata = {
546 	&latch1_gpio_device,
547 	&latch2_gpio_device,
548 	&ams_delta_kp_device,
549 	&ams_delta_audio_device,
550 	&ams_delta_serio_device,
551 	&ams_delta_nand_device,
552 	&ams_delta_lcd_device,
553 	&cx20442_codec_device,
554 };
555 
556 static struct gpiod_lookup_table *ams_delta_gpio_tables[] __initdata = {
557 	&ams_delta_nreset_gpiod_table,
558 	&ams_delta_audio_gpio_table,
559 	&keybrd_pwr_gpio_table,
560 	&ams_delta_lcd_gpio_table,
561 	&ams_delta_nand_gpio_table,
562 };
563 
564 /*
565  * Some drivers may not use GPIO lookup tables but need to be provided
566  * with GPIO numbers.  The same applies to GPIO based IRQ lines - some
567  * drivers may even not use GPIO layer but expect just IRQ numbers.
568  * We could either define GPIO lookup tables then use them on behalf
569  * of those devices, or we can use GPIO driver level methods for
570  * identification of GPIO and IRQ numbers. For the purpose of the latter,
571  * defina a helper function which identifies GPIO chips by their labels.
572  */
573 static int gpiochip_match_by_label(struct gpio_chip *chip, void *data)
574 {
575 	char *label = data;
576 
577 	return !strcmp(label, chip->label);
578 }
579 
580 static struct gpiod_hog ams_delta_gpio_hogs[] = {
581 	GPIO_HOG(LATCH2_LABEL, LATCH2_PIN_KEYBRD_DATAOUT, "keybrd_dataout",
582 		 GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW),
583 	{},
584 };
585 
586 static struct plat_serial8250_port ams_delta_modem_ports[];
587 
588 /*
589  * Obtain MODEM IRQ GPIO descriptor using its hardware pin
590  * number and assign related IRQ number to the MODEM port.
591  * Keep the GPIO descriptor open so nobody steps in.
592  */
593 static void __init modem_assign_irq(struct gpio_chip *chip)
594 {
595 	struct gpio_desc *gpiod;
596 
597 	gpiod = gpiochip_request_own_desc(chip, AMS_DELTA_GPIO_PIN_MODEM_IRQ,
598 					  "modem_irq", GPIO_ACTIVE_HIGH,
599 					  GPIOD_IN);
600 	if (IS_ERR(gpiod)) {
601 		pr_err("%s: modem IRQ GPIO request failed (%ld)\n", __func__,
602 		       PTR_ERR(gpiod));
603 	} else {
604 		ams_delta_modem_ports[0].irq = gpiod_to_irq(gpiod);
605 	}
606 }
607 
608 /*
609  * The purpose of this function is to take care of proper initialization of
610  * devices and data structures which depend on GPIO lines provided by OMAP GPIO
611  * banks but their drivers don't use GPIO lookup tables or GPIO layer at all.
612  * The function may be called as soon as OMAP GPIO devices are probed.
613  * Since that happens at postcore_initcall, it can be called successfully
614  * from init_machine or later.
615  * Dependent devices may be registered from within this function or later.
616  */
617 static void __init omap_gpio_deps_init(void)
618 {
619 	struct gpio_chip *chip;
620 
621 	chip = gpiochip_find(OMAP_GPIO_LABEL, gpiochip_match_by_label);
622 	if (!chip) {
623 		pr_err("%s: OMAP GPIO chip not found\n", __func__);
624 		return;
625 	}
626 
627 	/*
628 	 * Start with FIQ initialization as it may have to request
629 	 * and release successfully each OMAP GPIO pin in turn.
630 	 */
631 	ams_delta_init_fiq(chip, &ams_delta_serio_device);
632 
633 	modem_assign_irq(chip);
634 }
635 
636 /*
637  * Initialize latch2 pins with values which are safe for dependent on-board
638  * devices or useful for their successull initialization even before GPIO
639  * driver takes control over the latch pins:
640  * - LATCH2_PIN_LCD_VBLEN	= 0
641  * - LATCH2_PIN_LCD_NDISP	= 0	Keep LCD device powered off before its
642  *					driver takes control over it.
643  * - LATCH2_PIN_NAND_NCE	= 0
644  * - LATCH2_PIN_NAND_NWP	= 0	Keep NAND device down and write-
645  *					protected before its driver takes
646  *					control over it.
647  * - LATCH2_PIN_KEYBRD_PWR	= 0	Keep keyboard powered off before serio
648  *					driver takes control over it.
649  * - LATCH2_PIN_KEYBRD_DATAOUT	= 0	Keep low to avoid corruption of first
650  *					byte of data received from attached
651  *					keyboard when serio device is probed;
652  *					the pin is also hogged low by the latch2
653  *					GPIO driver as soon as it is ready.
654  * - LATCH2_PIN_MODEM_NRESET	= 1	Enable voice MODEM device, allowing for
655  *					its successful probe even before a
656  *					regulator it depends on, which in turn
657  *					takes control over the pin, is set up.
658  * - LATCH2_PIN_MODEM_CODEC	= 1	Attach voice MODEM CODEC data port
659  *					to the MODEM so the CODEC is under
660  *					control even if audio driver doesn't
661  *					take it over.
662  */
663 static void __init ams_delta_latch2_init(void)
664 {
665 	u16 latch2 = 1 << LATCH2_PIN_MODEM_NRESET | 1 << LATCH2_PIN_MODEM_CODEC;
666 
667 	__raw_writew(latch2, IOMEM(LATCH2_VIRT));
668 }
669 
670 static void __init ams_delta_init(void)
671 {
672 	struct platform_device *leds_pdev;
673 
674 	/* mux pins for uarts */
675 	omap_cfg_reg(UART1_TX);
676 	omap_cfg_reg(UART1_RTS);
677 
678 	/* parallel camera interface */
679 	omap_cfg_reg(H19_1610_CAM_EXCLK);
680 	omap_cfg_reg(J15_1610_CAM_LCLK);
681 	omap_cfg_reg(L18_1610_CAM_VS);
682 	omap_cfg_reg(L15_1610_CAM_HS);
683 	omap_cfg_reg(L19_1610_CAM_D0);
684 	omap_cfg_reg(K14_1610_CAM_D1);
685 	omap_cfg_reg(K15_1610_CAM_D2);
686 	omap_cfg_reg(K19_1610_CAM_D3);
687 	omap_cfg_reg(K18_1610_CAM_D4);
688 	omap_cfg_reg(J14_1610_CAM_D5);
689 	omap_cfg_reg(J19_1610_CAM_D6);
690 	omap_cfg_reg(J18_1610_CAM_D7);
691 
692 	omap_gpio_deps_init();
693 	ams_delta_latch2_init();
694 	gpiod_add_hogs(ams_delta_gpio_hogs);
695 
696 	omap_serial_init();
697 	omap_register_i2c_bus(1, 100, NULL, 0);
698 
699 	omap1_usb_init(&ams_delta_usb_config);
700 	platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));
701 
702 	/*
703 	 * As soon as regulator consumers have been registered, assign their
704 	 * dev_names to consumer supply entries of respective regulators.
705 	 */
706 	keybrd_pwr_consumers[0].dev_name =
707 			dev_name(&ams_delta_serio_device.dev);
708 
709 	/*
710 	 * Once consumer supply entries are populated with dev_names,
711 	 * register regulator devices.  At this stage only the keyboard
712 	 * power regulator has its consumer supply table fully populated.
713 	 */
714 	platform_device_register(&keybrd_pwr_device);
715 
716 	/*
717 	 * As soon as GPIO consumers have been registered, assign
718 	 * their dev_names to respective GPIO lookup tables.
719 	 */
720 	ams_delta_audio_gpio_table.dev_id =
721 			dev_name(&ams_delta_audio_device.dev);
722 	keybrd_pwr_gpio_table.dev_id = dev_name(&keybrd_pwr_device.dev);
723 	ams_delta_nand_gpio_table.dev_id = dev_name(&ams_delta_nand_device.dev);
724 	ams_delta_lcd_gpio_table.dev_id = dev_name(&ams_delta_lcd_device.dev);
725 
726 	/*
727 	 * Once GPIO lookup tables are populated with dev_names, register them.
728 	 */
729 	gpiod_add_lookup_tables(ams_delta_gpio_tables,
730 				ARRAY_SIZE(ams_delta_gpio_tables));
731 
732 	leds_pdev = gpio_led_register_device(PLATFORM_DEVID_NONE, &leds_pdata);
733 	if (!IS_ERR_OR_NULL(leds_pdev)) {
734 		leds_gpio_table.dev_id = dev_name(&leds_pdev->dev);
735 		gpiod_add_lookup_table(&leds_gpio_table);
736 	}
737 
738 	omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1);
739 
740 	omapfb_set_lcd_config(&ams_delta_lcd_config);
741 }
742 
743 static void modem_pm(struct uart_port *port, unsigned int state, unsigned old)
744 {
745 	struct modem_private_data *priv = port->private_data;
746 	int ret;
747 
748 	if (!priv)
749 		return;
750 
751 	if (IS_ERR(priv->regulator))
752 		return;
753 
754 	if (state == old)
755 		return;
756 
757 	if (state == 0)
758 		ret = regulator_enable(priv->regulator);
759 	else if (old == 0)
760 		ret = regulator_disable(priv->regulator);
761 	else
762 		ret = 0;
763 
764 	if (ret)
765 		dev_warn(port->dev,
766 			 "ams_delta modem_pm: failed to %sable regulator: %d\n",
767 			 state ? "dis" : "en", ret);
768 }
769 
770 static struct plat_serial8250_port ams_delta_modem_ports[] = {
771 	{
772 		.membase	= IOMEM(MODEM_VIRT),
773 		.mapbase	= MODEM_PHYS,
774 		.irq		= IRQ_NOTCONNECTED, /* changed later */
775 		.flags		= UPF_BOOT_AUTOCONF,
776 		.irqflags	= IRQF_TRIGGER_RISING,
777 		.iotype		= UPIO_MEM,
778 		.regshift	= 1,
779 		.uartclk	= BASE_BAUD * 16,
780 		.pm		= modem_pm,
781 		.private_data	= &modem_priv,
782 	},
783 	{ },
784 };
785 
786 static struct platform_device ams_delta_modem_device = {
787 	.name	= "serial8250",
788 	.id	= PLAT8250_DEV_PLATFORM1,
789 	.dev		= {
790 		.platform_data = ams_delta_modem_ports,
791 	},
792 };
793 
794 static int __init modem_nreset_init(void)
795 {
796 	int err;
797 
798 	err = platform_device_register(&modem_nreset_device);
799 	if (err)
800 		pr_err("Couldn't register the modem regulator device\n");
801 
802 	return err;
803 }
804 
805 
806 /*
807  * This function expects MODEM IRQ number already assigned to the port.
808  * The MODEM device requires its RESET# pin kept high during probe.
809  * That requirement can be fulfilled in several ways:
810  * - with a descriptor of already functional modem_nreset regulator
811  *   assigned to the MODEM private data,
812  * - with the regulator not yet controlled by modem_pm function but
813  *   already enabled by default on probe,
814  * - before the modem_nreset regulator is probed, with the pin already
815  *   set high explicitly.
816  * The last one is already guaranteed by ams_delta_latch2_init() called
817  * from machine_init.
818  * In order to avoid taking over ttyS0 device slot, the MODEM device
819  * should be registered after OMAP serial ports.  Since those ports
820  * are registered at arch_initcall, this function can be called safely
821  * at arch_initcall_sync earliest.
822  */
823 static int __init ams_delta_modem_init(void)
824 {
825 	int err;
826 
827 	if (!machine_is_ams_delta())
828 		return -ENODEV;
829 
830 	omap_cfg_reg(M14_1510_GPIO2);
831 
832 	/* Initialize the modem_nreset regulator consumer before use */
833 	modem_priv.regulator = ERR_PTR(-ENODEV);
834 
835 	err = platform_device_register(&ams_delta_modem_device);
836 
837 	return err;
838 }
839 arch_initcall_sync(ams_delta_modem_init);
840 
841 static int __init late_init(void)
842 {
843 	int err;
844 
845 	err = modem_nreset_init();
846 	if (err)
847 		return err;
848 
849 	/*
850 	 * Once the modem device is registered, the modem_nreset
851 	 * regulator can be requested on behalf of that device.
852 	 */
853 	modem_priv.regulator = regulator_get(&ams_delta_modem_device.dev,
854 			"RESET#");
855 	if (IS_ERR(modem_priv.regulator)) {
856 		err = PTR_ERR(modem_priv.regulator);
857 		goto unregister;
858 	}
859 	return 0;
860 
861 unregister:
862 	platform_device_unregister(&ams_delta_modem_device);
863 	return err;
864 }
865 
866 static void __init ams_delta_init_late(void)
867 {
868 	omap1_init_late();
869 	late_init();
870 }
871 
872 static void __init ams_delta_map_io(void)
873 {
874 	omap1_map_io();
875 	iotable_init(ams_delta_io_desc, ARRAY_SIZE(ams_delta_io_desc));
876 }
877 
878 MACHINE_START(AMS_DELTA, "Amstrad E3 (Delta)")
879 	/* Maintainer: Jonathan McDowell <noodles@earth.li> */
880 	.atag_offset	= 0x100,
881 	.map_io		= ams_delta_map_io,
882 	.init_early	= omap1_init_early,
883 	.init_irq	= omap1_init_irq,
884 	.handle_irq	= omap1_handle_irq,
885 	.init_machine	= ams_delta_init,
886 	.init_late	= ams_delta_init_late,
887 	.init_time	= omap1_timer_init,
888 	.restart	= omap1_restart,
889 MACHINE_END
890