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/kernel.h>
15 #include <linux/init.h>
16 #include <linux/input.h>
17 #include <linux/interrupt.h>
18 #include <linux/leds.h>
19 #include <linux/mtd/nand-gpio.h>
20 #include <linux/mtd/partitions.h>
21 #include <linux/platform_device.h>
22 #include <linux/regulator/consumer.h>
23 #include <linux/regulator/fixed.h>
24 #include <linux/regulator/machine.h>
25 #include <linux/serial_8250.h>
26 #include <linux/export.h>
27 #include <linux/omapfb.h>
28 #include <linux/io.h>
29 #include <linux/platform_data/gpio-omap.h>
30 #include <linux/soc/ti/omap1-mux.h>
31
32 #include <asm/serial.h>
33 #include <asm/mach-types.h>
34 #include <asm/mach/arch.h>
35 #include <asm/mach/map.h>
36
37 #include <linux/platform_data/keypad-omap.h>
38
39 #include "hardware.h"
40 #include "usb.h"
41 #include "ams-delta-fiq.h"
42 #include "board-ams-delta.h"
43 #include "iomap.h"
44 #include "common.h"
45
46 static const unsigned int ams_delta_keymap[] = {
47 KEY(0, 0, KEY_F1), /* Advert */
48
49 KEY(0, 3, KEY_COFFEE), /* Games */
50 KEY(0, 2, KEY_QUESTION), /* Directory */
51 KEY(2, 3, KEY_CONNECT), /* Internet */
52 KEY(1, 2, KEY_SHOP), /* Services */
53 KEY(1, 1, KEY_PHONE), /* VoiceMail */
54
55 KEY(0, 1, KEY_DELETE), /* Delete */
56 KEY(2, 2, KEY_PLAY), /* Play */
57 KEY(1, 0, KEY_PAGEUP), /* Up */
58 KEY(1, 3, KEY_PAGEDOWN), /* Down */
59 KEY(2, 0, KEY_EMAIL), /* ReadEmail */
60 KEY(2, 1, KEY_STOP), /* Stop */
61
62 /* Numeric keypad portion */
63 KEY(0, 7, KEY_KP1),
64 KEY(0, 6, KEY_KP2),
65 KEY(0, 5, KEY_KP3),
66 KEY(1, 7, KEY_KP4),
67 KEY(1, 6, KEY_KP5),
68 KEY(1, 5, KEY_KP6),
69 KEY(2, 7, KEY_KP7),
70 KEY(2, 6, KEY_KP8),
71 KEY(2, 5, KEY_KP9),
72 KEY(3, 6, KEY_KP0),
73 KEY(3, 7, KEY_KPASTERISK),
74 KEY(3, 5, KEY_KPDOT), /* # key */
75 KEY(7, 2, KEY_NUMLOCK), /* Mute */
76 KEY(7, 1, KEY_KPMINUS), /* Recall */
77 KEY(6, 1, KEY_KPPLUS), /* Redial */
78 KEY(7, 6, KEY_KPSLASH), /* Handsfree */
79 KEY(6, 0, KEY_ENTER), /* Video */
80
81 KEY(7, 4, KEY_CAMERA), /* Photo */
82
83 KEY(0, 4, KEY_F2), /* Home */
84 KEY(1, 4, KEY_F3), /* Office */
85 KEY(2, 4, KEY_F4), /* Mobile */
86 KEY(7, 7, KEY_F5), /* SMS */
87 KEY(7, 5, KEY_F6), /* Email */
88
89 /* QWERTY portion of keypad */
90 KEY(3, 4, KEY_Q),
91 KEY(3, 3, KEY_W),
92 KEY(3, 2, KEY_E),
93 KEY(3, 1, KEY_R),
94 KEY(3, 0, KEY_T),
95 KEY(4, 7, KEY_Y),
96 KEY(4, 6, KEY_U),
97 KEY(4, 5, KEY_I),
98 KEY(4, 4, KEY_O),
99 KEY(4, 3, KEY_P),
100
101 KEY(4, 2, KEY_A),
102 KEY(4, 1, KEY_S),
103 KEY(4, 0, KEY_D),
104 KEY(5, 7, KEY_F),
105 KEY(5, 6, KEY_G),
106 KEY(5, 5, KEY_H),
107 KEY(5, 4, KEY_J),
108 KEY(5, 3, KEY_K),
109 KEY(5, 2, KEY_L),
110
111 KEY(5, 1, KEY_Z),
112 KEY(5, 0, KEY_X),
113 KEY(6, 7, KEY_C),
114 KEY(6, 6, KEY_V),
115 KEY(6, 5, KEY_B),
116 KEY(6, 4, KEY_N),
117 KEY(6, 3, KEY_M),
118 KEY(6, 2, KEY_SPACE),
119
120 KEY(7, 0, KEY_LEFTSHIFT), /* Vol up */
121 KEY(7, 3, KEY_LEFTCTRL), /* Vol down */
122 };
123
124 #define LATCH1_PHYS 0x01000000
125 #define LATCH1_VIRT 0xEA000000
126 #define MODEM_PHYS 0x04000000
127 #define MODEM_VIRT 0xEB000000
128 #define LATCH2_PHYS 0x08000000
129 #define LATCH2_VIRT 0xEC000000
130
131 static struct map_desc ams_delta_io_desc[] __initdata = {
132 /* AMS_DELTA_LATCH1 */
133 {
134 .virtual = LATCH1_VIRT,
135 .pfn = __phys_to_pfn(LATCH1_PHYS),
136 .length = 0x01000000,
137 .type = MT_DEVICE
138 },
139 /* AMS_DELTA_LATCH2 */
140 {
141 .virtual = LATCH2_VIRT,
142 .pfn = __phys_to_pfn(LATCH2_PHYS),
143 .length = 0x01000000,
144 .type = MT_DEVICE
145 },
146 /* AMS_DELTA_MODEM */
147 {
148 .virtual = MODEM_VIRT,
149 .pfn = __phys_to_pfn(MODEM_PHYS),
150 .length = 0x01000000,
151 .type = MT_DEVICE
152 }
153 };
154
155 static const struct omap_lcd_config ams_delta_lcd_config __initconst = {
156 .ctrl_name = "internal",
157 };
158
159 static struct omap_usb_config ams_delta_usb_config __initdata = {
160 .register_host = 1,
161 .hmc_mode = 16,
162 .pins[0] = 2,
163 };
164
165 #define LATCH1_NGPIO 8
166
167 static struct resource latch1_resources[] = {
168 [0] = {
169 .name = "dat",
170 .start = LATCH1_PHYS,
171 .end = LATCH1_PHYS + (LATCH1_NGPIO - 1) / 8,
172 .flags = IORESOURCE_MEM,
173 },
174 };
175
176 #define LATCH1_LABEL "latch1"
177
178 static struct bgpio_pdata latch1_pdata = {
179 .label = LATCH1_LABEL,
180 .base = -1,
181 .ngpio = LATCH1_NGPIO,
182 };
183
184 static struct platform_device latch1_gpio_device = {
185 .name = "basic-mmio-gpio",
186 .id = 0,
187 .resource = latch1_resources,
188 .num_resources = ARRAY_SIZE(latch1_resources),
189 .dev = {
190 .platform_data = &latch1_pdata,
191 },
192 };
193
194 #define LATCH1_PIN_LED_CAMERA 0
195 #define LATCH1_PIN_LED_ADVERT 1
196 #define LATCH1_PIN_LED_MAIL 2
197 #define LATCH1_PIN_LED_HANDSFREE 3
198 #define LATCH1_PIN_LED_VOICEMAIL 4
199 #define LATCH1_PIN_LED_VOICE 5
200 #define LATCH1_PIN_DOCKIT1 6
201 #define LATCH1_PIN_DOCKIT2 7
202
203 #define LATCH2_NGPIO 16
204
205 static struct resource latch2_resources[] = {
206 [0] = {
207 .name = "dat",
208 .start = LATCH2_PHYS,
209 .end = LATCH2_PHYS + (LATCH2_NGPIO - 1) / 8,
210 .flags = IORESOURCE_MEM,
211 },
212 };
213
214 #define LATCH2_LABEL "latch2"
215
216 static struct bgpio_pdata latch2_pdata = {
217 .label = LATCH2_LABEL,
218 .base = -1,
219 .ngpio = LATCH2_NGPIO,
220 };
221
222 static struct platform_device latch2_gpio_device = {
223 .name = "basic-mmio-gpio",
224 .id = 1,
225 .resource = latch2_resources,
226 .num_resources = ARRAY_SIZE(latch2_resources),
227 .dev = {
228 .platform_data = &latch2_pdata,
229 },
230 };
231
232 #define LATCH2_PIN_LCD_VBLEN 0
233 #define LATCH2_PIN_LCD_NDISP 1
234 #define LATCH2_PIN_NAND_NCE 2
235 #define LATCH2_PIN_NAND_NRE 3
236 #define LATCH2_PIN_NAND_NWP 4
237 #define LATCH2_PIN_NAND_NWE 5
238 #define LATCH2_PIN_NAND_ALE 6
239 #define LATCH2_PIN_NAND_CLE 7
240 #define LATCH2_PIN_KEYBRD_PWR 8
241 #define LATCH2_PIN_KEYBRD_DATAOUT 9
242 #define LATCH2_PIN_SCARD_RSTIN 10
243 #define LATCH2_PIN_SCARD_CMDVCC 11
244 #define LATCH2_PIN_MODEM_NRESET 12
245 #define LATCH2_PIN_MODEM_CODEC 13
246 #define LATCH2_PIN_HANDSFREE_MUTE 14
247 #define LATCH2_PIN_HANDSET_MUTE 15
248
249 static struct regulator_consumer_supply modem_nreset_consumers[] = {
250 REGULATOR_SUPPLY("RESET#", "serial8250.1"),
251 REGULATOR_SUPPLY("POR", "cx20442-codec"),
252 };
253
254 static struct regulator_init_data modem_nreset_data = {
255 .constraints = {
256 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
257 .boot_on = 1,
258 },
259 .num_consumer_supplies = ARRAY_SIZE(modem_nreset_consumers),
260 .consumer_supplies = modem_nreset_consumers,
261 };
262
263 static struct fixed_voltage_config modem_nreset_config = {
264 .supply_name = "modem_nreset",
265 .microvolts = 3300000,
266 .startup_delay = 25000,
267 .enabled_at_boot = 1,
268 .init_data = &modem_nreset_data,
269 };
270
271 static struct platform_device modem_nreset_device = {
272 .name = "reg-fixed-voltage",
273 .id = -1,
274 .dev = {
275 .platform_data = &modem_nreset_config,
276 },
277 };
278
279 static struct gpiod_lookup_table ams_delta_nreset_gpiod_table = {
280 .dev_id = "reg-fixed-voltage",
281 .table = {
282 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_NRESET,
283 NULL, GPIO_ACTIVE_HIGH),
284 { },
285 },
286 };
287
288 struct modem_private_data {
289 struct regulator *regulator;
290 };
291
292 static struct modem_private_data modem_priv;
293
294 /*
295 * Define partitions for flash device
296 */
297
298 static struct mtd_partition partition_info[] = {
299 { .name = "Kernel",
300 .offset = 0,
301 .size = 3 * SZ_1M + SZ_512K },
302 { .name = "u-boot",
303 .offset = 3 * SZ_1M + SZ_512K,
304 .size = SZ_256K },
305 { .name = "u-boot params",
306 .offset = 3 * SZ_1M + SZ_512K + SZ_256K,
307 .size = SZ_256K },
308 { .name = "Amstrad LDR",
309 .offset = 4 * SZ_1M,
310 .size = SZ_256K },
311 { .name = "File system",
312 .offset = 4 * SZ_1M + 1 * SZ_256K,
313 .size = 27 * SZ_1M },
314 { .name = "PBL reserved",
315 .offset = 32 * SZ_1M - 3 * SZ_256K,
316 .size = 3 * SZ_256K },
317 };
318
319 static struct gpio_nand_platdata nand_platdata = {
320 .parts = partition_info,
321 .num_parts = ARRAY_SIZE(partition_info),
322 };
323
324 static struct platform_device ams_delta_nand_device = {
325 .name = "ams-delta-nand",
326 .id = -1,
327 .dev = {
328 .platform_data = &nand_platdata,
329 },
330 };
331
332 #define OMAP_GPIO_LABEL "gpio-0-15"
333 #define OMAP_MPUIO_LABEL "mpuio"
334
335 static struct gpiod_lookup_table ams_delta_nand_gpio_table = {
336 .table = {
337 GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_NAND_RB, "rdy",
338 0),
339 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NCE, "nce",
340 GPIO_ACTIVE_LOW),
341 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NRE, "nre",
342 GPIO_ACTIVE_LOW),
343 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWP, "nwp",
344 GPIO_ACTIVE_LOW),
345 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWE, "nwe",
346 GPIO_ACTIVE_LOW),
347 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_ALE, "ale", 0),
348 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_CLE, "cle", 0),
349 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 0, "data", 0, 0),
350 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 1, "data", 1, 0),
351 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 2, "data", 2, 0),
352 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 3, "data", 3, 0),
353 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 4, "data", 4, 0),
354 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 5, "data", 5, 0),
355 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 6, "data", 6, 0),
356 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 7, "data", 7, 0),
357 { },
358 },
359 };
360
361 static struct resource ams_delta_kp_resources[] = {
362 [0] = {
363 .start = INT_KEYBOARD,
364 .end = INT_KEYBOARD,
365 .flags = IORESOURCE_IRQ,
366 },
367 };
368
369 static const struct matrix_keymap_data ams_delta_keymap_data = {
370 .keymap = ams_delta_keymap,
371 .keymap_size = ARRAY_SIZE(ams_delta_keymap),
372 };
373
374 static struct omap_kp_platform_data ams_delta_kp_data = {
375 .rows = 8,
376 .cols = 8,
377 .keymap_data = &ams_delta_keymap_data,
378 .delay = 9,
379 };
380
381 static struct platform_device ams_delta_kp_device = {
382 .name = "omap-keypad",
383 .id = -1,
384 .dev = {
385 .platform_data = &ams_delta_kp_data,
386 },
387 .num_resources = ARRAY_SIZE(ams_delta_kp_resources),
388 .resource = ams_delta_kp_resources,
389 };
390
391 static struct platform_device ams_delta_lcd_device = {
392 .name = "lcd_ams_delta",
393 .id = -1,
394 };
395
396 static struct gpiod_lookup_table ams_delta_lcd_gpio_table = {
397 .table = {
398 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_VBLEN, "vblen", 0),
399 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_NDISP, "ndisp", 0),
400 { },
401 },
402 };
403
404 static struct gpio_led gpio_leds[] __initdata = {
405 [LATCH1_PIN_LED_CAMERA] = {
406 .name = "camera",
407 .default_state = LEDS_GPIO_DEFSTATE_OFF,
408 },
409 [LATCH1_PIN_LED_ADVERT] = {
410 .name = "advert",
411 .default_state = LEDS_GPIO_DEFSTATE_OFF,
412 },
413 [LATCH1_PIN_LED_MAIL] = {
414 .name = "email",
415 .default_state = LEDS_GPIO_DEFSTATE_OFF,
416 },
417 [LATCH1_PIN_LED_HANDSFREE] = {
418 .name = "handsfree",
419 .default_state = LEDS_GPIO_DEFSTATE_OFF,
420 },
421 [LATCH1_PIN_LED_VOICEMAIL] = {
422 .name = "voicemail",
423 .default_state = LEDS_GPIO_DEFSTATE_OFF,
424 },
425 [LATCH1_PIN_LED_VOICE] = {
426 .name = "voice",
427 .default_state = LEDS_GPIO_DEFSTATE_OFF,
428 },
429 };
430
431 static const struct gpio_led_platform_data leds_pdata __initconst = {
432 .leds = gpio_leds,
433 .num_leds = ARRAY_SIZE(gpio_leds),
434 };
435
436 static struct gpiod_lookup_table leds_gpio_table = {
437 .table = {
438 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_CAMERA, NULL,
439 LATCH1_PIN_LED_CAMERA, 0),
440 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_ADVERT, NULL,
441 LATCH1_PIN_LED_ADVERT, 0),
442 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_MAIL, NULL,
443 LATCH1_PIN_LED_MAIL, 0),
444 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_HANDSFREE, NULL,
445 LATCH1_PIN_LED_HANDSFREE, 0),
446 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICEMAIL, NULL,
447 LATCH1_PIN_LED_VOICEMAIL, 0),
448 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICE, NULL,
449 LATCH1_PIN_LED_VOICE, 0),
450 { },
451 },
452 };
453
454 static struct platform_device ams_delta_audio_device = {
455 .name = "ams-delta-audio",
456 .id = -1,
457 };
458
459 static struct gpiod_lookup_table ams_delta_audio_gpio_table = {
460 .table = {
461 GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_HOOK_SWITCH,
462 "hook_switch", 0),
463 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_CODEC,
464 "modem_codec", 0),
465 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSFREE_MUTE,
466 "handsfree_mute", 0),
467 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSET_MUTE,
468 "handset_mute", 0),
469 { },
470 },
471 };
472
473 static struct platform_device cx20442_codec_device = {
474 .name = "cx20442-codec",
475 .id = -1,
476 };
477
478 static struct resource ams_delta_serio_resources[] = {
479 {
480 .flags = IORESOURCE_IRQ,
481 /*
482 * Initialize IRQ resource with invalid IRQ number.
483 * It will be replaced with dynamically allocated GPIO IRQ
484 * obtained from GPIO chip as soon as the chip is available.
485 */
486 .start = -EINVAL,
487 .end = -EINVAL,
488 },
489 };
490
491 static struct platform_device ams_delta_serio_device = {
492 .name = "ams-delta-serio",
493 .id = PLATFORM_DEVID_NONE,
494 .dev = {
495 /*
496 * Initialize .platform_data explicitly with NULL to
497 * indicate it is going to be used. It will be replaced
498 * with FIQ buffer address as soon as FIQ is initialized.
499 */
500 .platform_data = NULL,
501 },
502 .num_resources = ARRAY_SIZE(ams_delta_serio_resources),
503 .resource = ams_delta_serio_resources,
504 };
505
506 static struct regulator_consumer_supply keybrd_pwr_consumers[] = {
507 /*
508 * Initialize supply .dev_name with NULL. It will be replaced
509 * with serio dev_name() as soon as the serio device is registered.
510 */
511 REGULATOR_SUPPLY("vcc", NULL),
512 };
513
514 static struct regulator_init_data keybrd_pwr_initdata = {
515 .constraints = {
516 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
517 },
518 .num_consumer_supplies = ARRAY_SIZE(keybrd_pwr_consumers),
519 .consumer_supplies = keybrd_pwr_consumers,
520 };
521
522 static struct fixed_voltage_config keybrd_pwr_config = {
523 .supply_name = "keybrd_pwr",
524 .microvolts = 5000000,
525 .init_data = &keybrd_pwr_initdata,
526 };
527
528 static struct platform_device keybrd_pwr_device = {
529 .name = "reg-fixed-voltage",
530 .id = PLATFORM_DEVID_AUTO,
531 .dev = {
532 .platform_data = &keybrd_pwr_config,
533 },
534 };
535
536 static struct gpiod_lookup_table keybrd_pwr_gpio_table = {
537 .table = {
538 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_KEYBRD_PWR, NULL,
539 GPIO_ACTIVE_HIGH),
540 { },
541 },
542 };
543
544 static struct platform_device *ams_delta_devices[] __initdata = {
545 &latch1_gpio_device,
546 &latch2_gpio_device,
547 &ams_delta_kp_device,
548 &ams_delta_audio_device,
549 &ams_delta_serio_device,
550 &ams_delta_nand_device,
551 &ams_delta_lcd_device,
552 &cx20442_codec_device,
553 &modem_nreset_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 */
gpiochip_match_by_label(struct gpio_chip * chip,void * data)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 */
modem_assign_irq(struct gpio_chip * chip)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 */
omap_gpio_deps_init(void)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 */
ams_delta_latch2_init(void)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
ams_delta_init(void)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
modem_pm(struct uart_port * port,unsigned int state,unsigned old)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
ams_delta_modem_pm_activate(struct device * dev)786 static int ams_delta_modem_pm_activate(struct device *dev)
787 {
788 modem_priv.regulator = regulator_get(dev, "RESET#");
789 if (IS_ERR(modem_priv.regulator))
790 return -EPROBE_DEFER;
791
792 return 0;
793 }
794
795 static struct dev_pm_domain ams_delta_modem_pm_domain = {
796 .activate = ams_delta_modem_pm_activate,
797 };
798
799 static struct platform_device ams_delta_modem_device = {
800 .name = "serial8250",
801 .id = PLAT8250_DEV_PLATFORM1,
802 .dev = {
803 .platform_data = ams_delta_modem_ports,
804 .pm_domain = &ams_delta_modem_pm_domain,
805 },
806 };
807
808 /*
809 * This function expects MODEM IRQ number already assigned to the port.
810 * The MODEM device requires its RESET# pin kept high during probe.
811 * That requirement can be fulfilled in several ways:
812 * - with a descriptor of already functional modem_nreset regulator
813 * assigned to the MODEM private data,
814 * - with the regulator not yet controlled by modem_pm function but
815 * already enabled by default on probe,
816 * - before the modem_nreset regulator is probed, with the pin already
817 * set high explicitly.
818 * The last one is already guaranteed by ams_delta_latch2_init() called
819 * from machine_init.
820 * In order to avoid taking over ttyS0 device slot, the MODEM device
821 * should be registered after OMAP serial ports. Since those ports
822 * are registered at arch_initcall, this function can be called safely
823 * at arch_initcall_sync earliest.
824 */
ams_delta_modem_init(void)825 static int __init ams_delta_modem_init(void)
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 return platform_device_register(&ams_delta_modem_device);
836 }
837 arch_initcall_sync(ams_delta_modem_init);
838
ams_delta_map_io(void)839 static void __init ams_delta_map_io(void)
840 {
841 omap1_map_io();
842 iotable_init(ams_delta_io_desc, ARRAY_SIZE(ams_delta_io_desc));
843 }
844
845 MACHINE_START(AMS_DELTA, "Amstrad E3 (Delta)")
846 /* Maintainer: Jonathan McDowell <noodles@earth.li> */
847 .atag_offset = 0x100,
848 .map_io = ams_delta_map_io,
849 .init_early = omap1_init_early,
850 .init_irq = omap1_init_irq,
851 .init_machine = ams_delta_init,
852 .init_late = omap1_init_late,
853 .init_time = omap1_timer_init,
854 .restart = omap1_restart,
855 MACHINE_END
856