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
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 #include <mach/mux.h>
39
40 #include <mach/hardware.h>
41 #include <mach/usb.h>
42
43 #include "ams-delta-fiq.h"
44 #include "board-ams-delta.h"
45 #include "iomap.h"
46 #include "common.h"
47
48 static const unsigned int ams_delta_keymap[] = {
49 KEY(0, 0, KEY_F1), /* Advert */
50
51 KEY(0, 3, KEY_COFFEE), /* Games */
52 KEY(0, 2, KEY_QUESTION), /* Directory */
53 KEY(2, 3, KEY_CONNECT), /* Internet */
54 KEY(1, 2, KEY_SHOP), /* Services */
55 KEY(1, 1, KEY_PHONE), /* VoiceMail */
56
57 KEY(0, 1, KEY_DELETE), /* Delete */
58 KEY(2, 2, KEY_PLAY), /* Play */
59 KEY(1, 0, KEY_PAGEUP), /* Up */
60 KEY(1, 3, KEY_PAGEDOWN), /* Down */
61 KEY(2, 0, KEY_EMAIL), /* ReadEmail */
62 KEY(2, 1, KEY_STOP), /* Stop */
63
64 /* Numeric keypad portion */
65 KEY(0, 7, KEY_KP1),
66 KEY(0, 6, KEY_KP2),
67 KEY(0, 5, KEY_KP3),
68 KEY(1, 7, KEY_KP4),
69 KEY(1, 6, KEY_KP5),
70 KEY(1, 5, KEY_KP6),
71 KEY(2, 7, KEY_KP7),
72 KEY(2, 6, KEY_KP8),
73 KEY(2, 5, KEY_KP9),
74 KEY(3, 6, KEY_KP0),
75 KEY(3, 7, KEY_KPASTERISK),
76 KEY(3, 5, KEY_KPDOT), /* # key */
77 KEY(7, 2, KEY_NUMLOCK), /* Mute */
78 KEY(7, 1, KEY_KPMINUS), /* Recall */
79 KEY(6, 1, KEY_KPPLUS), /* Redial */
80 KEY(7, 6, KEY_KPSLASH), /* Handsfree */
81 KEY(6, 0, KEY_ENTER), /* Video */
82
83 KEY(7, 4, KEY_CAMERA), /* Photo */
84
85 KEY(0, 4, KEY_F2), /* Home */
86 KEY(1, 4, KEY_F3), /* Office */
87 KEY(2, 4, KEY_F4), /* Mobile */
88 KEY(7, 7, KEY_F5), /* SMS */
89 KEY(7, 5, KEY_F6), /* Email */
90
91 /* QWERTY portion of keypad */
92 KEY(3, 4, KEY_Q),
93 KEY(3, 3, KEY_W),
94 KEY(3, 2, KEY_E),
95 KEY(3, 1, KEY_R),
96 KEY(3, 0, KEY_T),
97 KEY(4, 7, KEY_Y),
98 KEY(4, 6, KEY_U),
99 KEY(4, 5, KEY_I),
100 KEY(4, 4, KEY_O),
101 KEY(4, 3, KEY_P),
102
103 KEY(4, 2, KEY_A),
104 KEY(4, 1, KEY_S),
105 KEY(4, 0, KEY_D),
106 KEY(5, 7, KEY_F),
107 KEY(5, 6, KEY_G),
108 KEY(5, 5, KEY_H),
109 KEY(5, 4, KEY_J),
110 KEY(5, 3, KEY_K),
111 KEY(5, 2, KEY_L),
112
113 KEY(5, 1, KEY_Z),
114 KEY(5, 0, KEY_X),
115 KEY(6, 7, KEY_C),
116 KEY(6, 6, KEY_V),
117 KEY(6, 5, KEY_B),
118 KEY(6, 4, KEY_N),
119 KEY(6, 3, KEY_M),
120 KEY(6, 2, KEY_SPACE),
121
122 KEY(7, 0, KEY_LEFTSHIFT), /* Vol up */
123 KEY(7, 3, KEY_LEFTCTRL), /* Vol down */
124 };
125
126 #define LATCH1_PHYS 0x01000000
127 #define LATCH1_VIRT 0xEA000000
128 #define MODEM_PHYS 0x04000000
129 #define MODEM_VIRT 0xEB000000
130 #define LATCH2_PHYS 0x08000000
131 #define LATCH2_VIRT 0xEC000000
132
133 static struct map_desc ams_delta_io_desc[] __initdata = {
134 /* AMS_DELTA_LATCH1 */
135 {
136 .virtual = LATCH1_VIRT,
137 .pfn = __phys_to_pfn(LATCH1_PHYS),
138 .length = 0x01000000,
139 .type = MT_DEVICE
140 },
141 /* AMS_DELTA_LATCH2 */
142 {
143 .virtual = LATCH2_VIRT,
144 .pfn = __phys_to_pfn(LATCH2_PHYS),
145 .length = 0x01000000,
146 .type = MT_DEVICE
147 },
148 /* AMS_DELTA_MODEM */
149 {
150 .virtual = MODEM_VIRT,
151 .pfn = __phys_to_pfn(MODEM_PHYS),
152 .length = 0x01000000,
153 .type = MT_DEVICE
154 }
155 };
156
157 static const struct omap_lcd_config ams_delta_lcd_config __initconst = {
158 .ctrl_name = "internal",
159 };
160
161 static struct omap_usb_config ams_delta_usb_config __initdata = {
162 .register_host = 1,
163 .hmc_mode = 16,
164 .pins[0] = 2,
165 };
166
167 #define LATCH1_NGPIO 8
168
169 static struct resource latch1_resources[] = {
170 [0] = {
171 .name = "dat",
172 .start = LATCH1_PHYS,
173 .end = LATCH1_PHYS + (LATCH1_NGPIO - 1) / 8,
174 .flags = IORESOURCE_MEM,
175 },
176 };
177
178 #define LATCH1_LABEL "latch1"
179
180 static struct bgpio_pdata latch1_pdata = {
181 .label = LATCH1_LABEL,
182 .base = -1,
183 .ngpio = LATCH1_NGPIO,
184 };
185
186 static struct platform_device latch1_gpio_device = {
187 .name = "basic-mmio-gpio",
188 .id = 0,
189 .resource = latch1_resources,
190 .num_resources = ARRAY_SIZE(latch1_resources),
191 .dev = {
192 .platform_data = &latch1_pdata,
193 },
194 };
195
196 #define LATCH1_PIN_LED_CAMERA 0
197 #define LATCH1_PIN_LED_ADVERT 1
198 #define LATCH1_PIN_LED_MAIL 2
199 #define LATCH1_PIN_LED_HANDSFREE 3
200 #define LATCH1_PIN_LED_VOICEMAIL 4
201 #define LATCH1_PIN_LED_VOICE 5
202 #define LATCH1_PIN_DOCKIT1 6
203 #define LATCH1_PIN_DOCKIT2 7
204
205 #define LATCH2_NGPIO 16
206
207 static struct resource latch2_resources[] = {
208 [0] = {
209 .name = "dat",
210 .start = LATCH2_PHYS,
211 .end = LATCH2_PHYS + (LATCH2_NGPIO - 1) / 8,
212 .flags = IORESOURCE_MEM,
213 },
214 };
215
216 #define LATCH2_LABEL "latch2"
217
218 static struct bgpio_pdata latch2_pdata = {
219 .label = LATCH2_LABEL,
220 .base = -1,
221 .ngpio = LATCH2_NGPIO,
222 };
223
224 static struct platform_device latch2_gpio_device = {
225 .name = "basic-mmio-gpio",
226 .id = 1,
227 .resource = latch2_resources,
228 .num_resources = ARRAY_SIZE(latch2_resources),
229 .dev = {
230 .platform_data = &latch2_pdata,
231 },
232 };
233
234 #define LATCH2_PIN_LCD_VBLEN 0
235 #define LATCH2_PIN_LCD_NDISP 1
236 #define LATCH2_PIN_NAND_NCE 2
237 #define LATCH2_PIN_NAND_NRE 3
238 #define LATCH2_PIN_NAND_NWP 4
239 #define LATCH2_PIN_NAND_NWE 5
240 #define LATCH2_PIN_NAND_ALE 6
241 #define LATCH2_PIN_NAND_CLE 7
242 #define LATCH2_PIN_KEYBRD_PWR 8
243 #define LATCH2_PIN_KEYBRD_DATAOUT 9
244 #define LATCH2_PIN_SCARD_RSTIN 10
245 #define LATCH2_PIN_SCARD_CMDVCC 11
246 #define LATCH2_PIN_MODEM_NRESET 12
247 #define LATCH2_PIN_MODEM_CODEC 13
248 #define LATCH2_PIN_HANDSFREE_MUTE 14
249 #define LATCH2_PIN_HANDSET_MUTE 15
250
251 static struct regulator_consumer_supply modem_nreset_consumers[] = {
252 REGULATOR_SUPPLY("RESET#", "serial8250.1"),
253 REGULATOR_SUPPLY("POR", "cx20442-codec"),
254 };
255
256 static struct regulator_init_data modem_nreset_data = {
257 .constraints = {
258 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
259 .boot_on = 1,
260 },
261 .num_consumer_supplies = ARRAY_SIZE(modem_nreset_consumers),
262 .consumer_supplies = modem_nreset_consumers,
263 };
264
265 static struct fixed_voltage_config modem_nreset_config = {
266 .supply_name = "modem_nreset",
267 .microvolts = 3300000,
268 .startup_delay = 25000,
269 .enabled_at_boot = 1,
270 .init_data = &modem_nreset_data,
271 };
272
273 static struct platform_device modem_nreset_device = {
274 .name = "reg-fixed-voltage",
275 .id = -1,
276 .dev = {
277 .platform_data = &modem_nreset_config,
278 },
279 };
280
281 static struct gpiod_lookup_table ams_delta_nreset_gpiod_table = {
282 .dev_id = "reg-fixed-voltage",
283 .table = {
284 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_NRESET,
285 NULL, GPIO_ACTIVE_HIGH),
286 { },
287 },
288 };
289
290 struct modem_private_data {
291 struct regulator *regulator;
292 };
293
294 static struct modem_private_data modem_priv;
295
296 /*
297 * Define partitions for flash device
298 */
299
300 static struct mtd_partition partition_info[] = {
301 { .name = "Kernel",
302 .offset = 0,
303 .size = 3 * SZ_1M + SZ_512K },
304 { .name = "u-boot",
305 .offset = 3 * SZ_1M + SZ_512K,
306 .size = SZ_256K },
307 { .name = "u-boot params",
308 .offset = 3 * SZ_1M + SZ_512K + SZ_256K,
309 .size = SZ_256K },
310 { .name = "Amstrad LDR",
311 .offset = 4 * SZ_1M,
312 .size = SZ_256K },
313 { .name = "File system",
314 .offset = 4 * SZ_1M + 1 * SZ_256K,
315 .size = 27 * SZ_1M },
316 { .name = "PBL reserved",
317 .offset = 32 * SZ_1M - 3 * SZ_256K,
318 .size = 3 * SZ_256K },
319 };
320
321 static struct gpio_nand_platdata nand_platdata = {
322 .parts = partition_info,
323 .num_parts = ARRAY_SIZE(partition_info),
324 };
325
326 static struct platform_device ams_delta_nand_device = {
327 .name = "ams-delta-nand",
328 .id = -1,
329 .dev = {
330 .platform_data = &nand_platdata,
331 },
332 };
333
334 #define OMAP_GPIO_LABEL "gpio-0-15"
335 #define OMAP_MPUIO_LABEL "mpuio"
336
337 static struct gpiod_lookup_table ams_delta_nand_gpio_table = {
338 .table = {
339 GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_NAND_RB, "rdy",
340 0),
341 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NCE, "nce",
342 GPIO_ACTIVE_LOW),
343 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NRE, "nre",
344 GPIO_ACTIVE_LOW),
345 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWP, "nwp",
346 GPIO_ACTIVE_LOW),
347 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWE, "nwe",
348 GPIO_ACTIVE_LOW),
349 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_ALE, "ale", 0),
350 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_CLE, "cle", 0),
351 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 0, "data", 0, 0),
352 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 1, "data", 1, 0),
353 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 2, "data", 2, 0),
354 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 3, "data", 3, 0),
355 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 4, "data", 4, 0),
356 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 5, "data", 5, 0),
357 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 6, "data", 6, 0),
358 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 7, "data", 7, 0),
359 { },
360 },
361 };
362
363 static struct resource ams_delta_kp_resources[] = {
364 [0] = {
365 .start = INT_KEYBOARD,
366 .end = INT_KEYBOARD,
367 .flags = IORESOURCE_IRQ,
368 },
369 };
370
371 static const struct matrix_keymap_data ams_delta_keymap_data = {
372 .keymap = ams_delta_keymap,
373 .keymap_size = ARRAY_SIZE(ams_delta_keymap),
374 };
375
376 static struct omap_kp_platform_data ams_delta_kp_data = {
377 .rows = 8,
378 .cols = 8,
379 .keymap_data = &ams_delta_keymap_data,
380 .delay = 9,
381 };
382
383 static struct platform_device ams_delta_kp_device = {
384 .name = "omap-keypad",
385 .id = -1,
386 .dev = {
387 .platform_data = &ams_delta_kp_data,
388 },
389 .num_resources = ARRAY_SIZE(ams_delta_kp_resources),
390 .resource = ams_delta_kp_resources,
391 };
392
393 static struct platform_device ams_delta_lcd_device = {
394 .name = "lcd_ams_delta",
395 .id = -1,
396 };
397
398 static struct gpiod_lookup_table ams_delta_lcd_gpio_table = {
399 .table = {
400 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_VBLEN, "vblen", 0),
401 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_NDISP, "ndisp", 0),
402 { },
403 },
404 };
405
406 static struct gpio_led gpio_leds[] __initdata = {
407 [LATCH1_PIN_LED_CAMERA] = {
408 .name = "camera",
409 .default_state = LEDS_GPIO_DEFSTATE_OFF,
410 #ifdef CONFIG_LEDS_TRIGGERS
411 .default_trigger = "ams_delta_camera",
412 #endif
413 },
414 [LATCH1_PIN_LED_ADVERT] = {
415 .name = "advert",
416 .default_state = LEDS_GPIO_DEFSTATE_OFF,
417 },
418 [LATCH1_PIN_LED_MAIL] = {
419 .name = "email",
420 .default_state = LEDS_GPIO_DEFSTATE_OFF,
421 },
422 [LATCH1_PIN_LED_HANDSFREE] = {
423 .name = "handsfree",
424 .default_state = LEDS_GPIO_DEFSTATE_OFF,
425 },
426 [LATCH1_PIN_LED_VOICEMAIL] = {
427 .name = "voicemail",
428 .default_state = LEDS_GPIO_DEFSTATE_OFF,
429 },
430 [LATCH1_PIN_LED_VOICE] = {
431 .name = "voice",
432 .default_state = LEDS_GPIO_DEFSTATE_OFF,
433 },
434 };
435
436 static const struct gpio_led_platform_data leds_pdata __initconst = {
437 .leds = gpio_leds,
438 .num_leds = ARRAY_SIZE(gpio_leds),
439 };
440
441 static struct gpiod_lookup_table leds_gpio_table = {
442 .table = {
443 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_CAMERA, NULL,
444 LATCH1_PIN_LED_CAMERA, 0),
445 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_ADVERT, NULL,
446 LATCH1_PIN_LED_ADVERT, 0),
447 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_MAIL, NULL,
448 LATCH1_PIN_LED_MAIL, 0),
449 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_HANDSFREE, NULL,
450 LATCH1_PIN_LED_HANDSFREE, 0),
451 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICEMAIL, NULL,
452 LATCH1_PIN_LED_VOICEMAIL, 0),
453 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICE, NULL,
454 LATCH1_PIN_LED_VOICE, 0),
455 { },
456 },
457 };
458
459 #ifdef CONFIG_LEDS_TRIGGERS
460 DEFINE_LED_TRIGGER(ams_delta_camera_led_trigger);
461 #endif
462
463 static struct platform_device ams_delta_audio_device = {
464 .name = "ams-delta-audio",
465 .id = -1,
466 };
467
468 static struct gpiod_lookup_table ams_delta_audio_gpio_table = {
469 .table = {
470 GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_HOOK_SWITCH,
471 "hook_switch", 0),
472 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_CODEC,
473 "modem_codec", 0),
474 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSFREE_MUTE,
475 "handsfree_mute", 0),
476 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSET_MUTE,
477 "handset_mute", 0),
478 { },
479 },
480 };
481
482 static struct platform_device cx20442_codec_device = {
483 .name = "cx20442-codec",
484 .id = -1,
485 };
486
487 static struct resource ams_delta_serio_resources[] = {
488 {
489 .flags = IORESOURCE_IRQ,
490 /*
491 * Initialize IRQ resource with invalid IRQ number.
492 * It will be replaced with dynamically allocated GPIO IRQ
493 * obtained from GPIO chip as soon as the chip is available.
494 */
495 .start = -EINVAL,
496 .end = -EINVAL,
497 },
498 };
499
500 static struct platform_device ams_delta_serio_device = {
501 .name = "ams-delta-serio",
502 .id = PLATFORM_DEVID_NONE,
503 .dev = {
504 /*
505 * Initialize .platform_data explicitly with NULL to
506 * indicate it is going to be used. It will be replaced
507 * with FIQ buffer address as soon as FIQ is initialized.
508 */
509 .platform_data = NULL,
510 },
511 .num_resources = ARRAY_SIZE(ams_delta_serio_resources),
512 .resource = ams_delta_serio_resources,
513 };
514
515 static struct regulator_consumer_supply keybrd_pwr_consumers[] = {
516 /*
517 * Initialize supply .dev_name with NULL. It will be replaced
518 * with serio dev_name() as soon as the serio device is registered.
519 */
520 REGULATOR_SUPPLY("vcc", NULL),
521 };
522
523 static struct regulator_init_data keybrd_pwr_initdata = {
524 .constraints = {
525 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
526 },
527 .num_consumer_supplies = ARRAY_SIZE(keybrd_pwr_consumers),
528 .consumer_supplies = keybrd_pwr_consumers,
529 };
530
531 static struct fixed_voltage_config keybrd_pwr_config = {
532 .supply_name = "keybrd_pwr",
533 .microvolts = 5000000,
534 .init_data = &keybrd_pwr_initdata,
535 };
536
537 static struct platform_device keybrd_pwr_device = {
538 .name = "reg-fixed-voltage",
539 .id = PLATFORM_DEVID_AUTO,
540 .dev = {
541 .platform_data = &keybrd_pwr_config,
542 },
543 };
544
545 static struct gpiod_lookup_table keybrd_pwr_gpio_table = {
546 .table = {
547 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_KEYBRD_PWR, NULL,
548 GPIO_ACTIVE_HIGH),
549 { },
550 },
551 };
552
553 static struct platform_device *ams_delta_devices[] __initdata = {
554 &latch1_gpio_device,
555 &latch2_gpio_device,
556 &ams_delta_kp_device,
557 &ams_delta_audio_device,
558 &ams_delta_serio_device,
559 &ams_delta_nand_device,
560 &ams_delta_lcd_device,
561 &cx20442_codec_device,
562 };
563
564 static struct gpiod_lookup_table *ams_delta_gpio_tables[] __initdata = {
565 &ams_delta_nreset_gpiod_table,
566 &ams_delta_audio_gpio_table,
567 &keybrd_pwr_gpio_table,
568 &ams_delta_lcd_gpio_table,
569 &ams_delta_nand_gpio_table,
570 };
571
572 /*
573 * Some drivers may not use GPIO lookup tables but need to be provided
574 * with GPIO numbers. The same applies to GPIO based IRQ lines - some
575 * drivers may even not use GPIO layer but expect just IRQ numbers.
576 * We could either define GPIO lookup tables then use them on behalf
577 * of those devices, or we can use GPIO driver level methods for
578 * identification of GPIO and IRQ numbers. For the purpose of the latter,
579 * defina a helper function which identifies GPIO chips by their labels.
580 */
gpiochip_match_by_label(struct gpio_chip * chip,void * data)581 static int gpiochip_match_by_label(struct gpio_chip *chip, void *data)
582 {
583 char *label = data;
584
585 return !strcmp(label, chip->label);
586 }
587
588 static struct gpiod_hog ams_delta_gpio_hogs[] = {
589 GPIO_HOG(LATCH2_LABEL, LATCH2_PIN_KEYBRD_DATAOUT, "keybrd_dataout",
590 GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW),
591 {},
592 };
593
594 static struct plat_serial8250_port ams_delta_modem_ports[];
595
596 /*
597 * Obtain MODEM IRQ GPIO descriptor using its hardware pin
598 * number and assign related IRQ number to the MODEM port.
599 * Keep the GPIO descriptor open so nobody steps in.
600 */
modem_assign_irq(struct gpio_chip * chip)601 static void __init modem_assign_irq(struct gpio_chip *chip)
602 {
603 struct gpio_desc *gpiod;
604
605 gpiod = gpiochip_request_own_desc(chip, AMS_DELTA_GPIO_PIN_MODEM_IRQ,
606 "modem_irq", GPIO_ACTIVE_HIGH,
607 GPIOD_IN);
608 if (IS_ERR(gpiod)) {
609 pr_err("%s: modem IRQ GPIO request failed (%ld)\n", __func__,
610 PTR_ERR(gpiod));
611 } else {
612 ams_delta_modem_ports[0].irq = gpiod_to_irq(gpiod);
613 }
614 }
615
616 /*
617 * The purpose of this function is to take care of proper initialization of
618 * devices and data structures which depend on GPIO lines provided by OMAP GPIO
619 * banks but their drivers don't use GPIO lookup tables or GPIO layer at all.
620 * The function may be called as soon as OMAP GPIO devices are probed.
621 * Since that happens at postcore_initcall, it can be called successfully
622 * from init_machine or later.
623 * Dependent devices may be registered from within this function or later.
624 */
omap_gpio_deps_init(void)625 static void __init omap_gpio_deps_init(void)
626 {
627 struct gpio_chip *chip;
628
629 chip = gpiochip_find(OMAP_GPIO_LABEL, gpiochip_match_by_label);
630 if (!chip) {
631 pr_err("%s: OMAP GPIO chip not found\n", __func__);
632 return;
633 }
634
635 /*
636 * Start with FIQ initialization as it may have to request
637 * and release successfully each OMAP GPIO pin in turn.
638 */
639 ams_delta_init_fiq(chip, &ams_delta_serio_device);
640
641 modem_assign_irq(chip);
642 }
643
644 /*
645 * Initialize latch2 pins with values which are safe for dependent on-board
646 * devices or useful for their successull initialization even before GPIO
647 * driver takes control over the latch pins:
648 * - LATCH2_PIN_LCD_VBLEN = 0
649 * - LATCH2_PIN_LCD_NDISP = 0 Keep LCD device powered off before its
650 * driver takes control over it.
651 * - LATCH2_PIN_NAND_NCE = 0
652 * - LATCH2_PIN_NAND_NWP = 0 Keep NAND device down and write-
653 * protected before its driver takes
654 * control over it.
655 * - LATCH2_PIN_KEYBRD_PWR = 0 Keep keyboard powered off before serio
656 * driver takes control over it.
657 * - LATCH2_PIN_KEYBRD_DATAOUT = 0 Keep low to avoid corruption of first
658 * byte of data received from attached
659 * keyboard when serio device is probed;
660 * the pin is also hogged low by the latch2
661 * GPIO driver as soon as it is ready.
662 * - LATCH2_PIN_MODEM_NRESET = 1 Enable voice MODEM device, allowing for
663 * its successful probe even before a
664 * regulator it depends on, which in turn
665 * takes control over the pin, is set up.
666 * - LATCH2_PIN_MODEM_CODEC = 1 Attach voice MODEM CODEC data port
667 * to the MODEM so the CODEC is under
668 * control even if audio driver doesn't
669 * take it over.
670 */
ams_delta_latch2_init(void)671 static void __init ams_delta_latch2_init(void)
672 {
673 u16 latch2 = 1 << LATCH2_PIN_MODEM_NRESET | 1 << LATCH2_PIN_MODEM_CODEC;
674
675 __raw_writew(latch2, LATCH2_VIRT);
676 }
677
ams_delta_init(void)678 static void __init ams_delta_init(void)
679 {
680 struct platform_device *leds_pdev;
681
682 /* mux pins for uarts */
683 omap_cfg_reg(UART1_TX);
684 omap_cfg_reg(UART1_RTS);
685
686 /* parallel camera interface */
687 omap_cfg_reg(H19_1610_CAM_EXCLK);
688 omap_cfg_reg(J15_1610_CAM_LCLK);
689 omap_cfg_reg(L18_1610_CAM_VS);
690 omap_cfg_reg(L15_1610_CAM_HS);
691 omap_cfg_reg(L19_1610_CAM_D0);
692 omap_cfg_reg(K14_1610_CAM_D1);
693 omap_cfg_reg(K15_1610_CAM_D2);
694 omap_cfg_reg(K19_1610_CAM_D3);
695 omap_cfg_reg(K18_1610_CAM_D4);
696 omap_cfg_reg(J14_1610_CAM_D5);
697 omap_cfg_reg(J19_1610_CAM_D6);
698 omap_cfg_reg(J18_1610_CAM_D7);
699
700 omap_gpio_deps_init();
701 ams_delta_latch2_init();
702 gpiod_add_hogs(ams_delta_gpio_hogs);
703
704 omap_serial_init();
705 omap_register_i2c_bus(1, 100, NULL, 0);
706
707 omap1_usb_init(&ams_delta_usb_config);
708 #ifdef CONFIG_LEDS_TRIGGERS
709 led_trigger_register_simple("ams_delta_camera",
710 &ams_delta_camera_led_trigger);
711 #endif
712 platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));
713
714 /*
715 * As soon as regulator consumers have been registered, assign their
716 * dev_names to consumer supply entries of respective regulators.
717 */
718 keybrd_pwr_consumers[0].dev_name =
719 dev_name(&ams_delta_serio_device.dev);
720
721 /*
722 * Once consumer supply entries are populated with dev_names,
723 * register regulator devices. At this stage only the keyboard
724 * power regulator has its consumer supply table fully populated.
725 */
726 platform_device_register(&keybrd_pwr_device);
727
728 /*
729 * As soon as GPIO consumers have been registered, assign
730 * their dev_names to respective GPIO lookup tables.
731 */
732 ams_delta_audio_gpio_table.dev_id =
733 dev_name(&ams_delta_audio_device.dev);
734 keybrd_pwr_gpio_table.dev_id = dev_name(&keybrd_pwr_device.dev);
735 ams_delta_nand_gpio_table.dev_id = dev_name(&ams_delta_nand_device.dev);
736 ams_delta_lcd_gpio_table.dev_id = dev_name(&ams_delta_lcd_device.dev);
737
738 /*
739 * Once GPIO lookup tables are populated with dev_names, register them.
740 */
741 gpiod_add_lookup_tables(ams_delta_gpio_tables,
742 ARRAY_SIZE(ams_delta_gpio_tables));
743
744 leds_pdev = gpio_led_register_device(PLATFORM_DEVID_NONE, &leds_pdata);
745 if (!IS_ERR_OR_NULL(leds_pdev)) {
746 leds_gpio_table.dev_id = dev_name(&leds_pdev->dev);
747 gpiod_add_lookup_table(&leds_gpio_table);
748 }
749
750 omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1);
751
752 omapfb_set_lcd_config(&ams_delta_lcd_config);
753 }
754
modem_pm(struct uart_port * port,unsigned int state,unsigned old)755 static void modem_pm(struct uart_port *port, unsigned int state, unsigned old)
756 {
757 struct modem_private_data *priv = port->private_data;
758 int ret;
759
760 if (!priv)
761 return;
762
763 if (IS_ERR(priv->regulator))
764 return;
765
766 if (state == old)
767 return;
768
769 if (state == 0)
770 ret = regulator_enable(priv->regulator);
771 else if (old == 0)
772 ret = regulator_disable(priv->regulator);
773 else
774 ret = 0;
775
776 if (ret)
777 dev_warn(port->dev,
778 "ams_delta modem_pm: failed to %sable regulator: %d\n",
779 state ? "dis" : "en", ret);
780 }
781
782 static struct plat_serial8250_port ams_delta_modem_ports[] = {
783 {
784 .membase = IOMEM(MODEM_VIRT),
785 .mapbase = MODEM_PHYS,
786 .irq = IRQ_NOTCONNECTED, /* changed later */
787 .flags = UPF_BOOT_AUTOCONF,
788 .irqflags = IRQF_TRIGGER_RISING,
789 .iotype = UPIO_MEM,
790 .regshift = 1,
791 .uartclk = BASE_BAUD * 16,
792 .pm = modem_pm,
793 .private_data = &modem_priv,
794 },
795 { },
796 };
797
798 static struct platform_device ams_delta_modem_device = {
799 .name = "serial8250",
800 .id = PLAT8250_DEV_PLATFORM1,
801 .dev = {
802 .platform_data = ams_delta_modem_ports,
803 },
804 };
805
modem_nreset_init(void)806 static int __init modem_nreset_init(void)
807 {
808 int err;
809
810 err = platform_device_register(&modem_nreset_device);
811 if (err)
812 pr_err("Couldn't register the modem regulator device\n");
813
814 return err;
815 }
816
817
818 /*
819 * This function expects MODEM IRQ number already assigned to the port.
820 * The MODEM device requires its RESET# pin kept high during probe.
821 * That requirement can be fulfilled in several ways:
822 * - with a descriptor of already functional modem_nreset regulator
823 * assigned to the MODEM private data,
824 * - with the regulator not yet controlled by modem_pm function but
825 * already enabled by default on probe,
826 * - before the modem_nreset regulator is probed, with the pin already
827 * set high explicitly.
828 * The last one is already guaranteed by ams_delta_latch2_init() called
829 * from machine_init.
830 * In order to avoid taking over ttyS0 device slot, the MODEM device
831 * should be registered after OMAP serial ports. Since those ports
832 * are registered at arch_initcall, this function can be called safely
833 * at arch_initcall_sync earliest.
834 */
ams_delta_modem_init(void)835 static int __init ams_delta_modem_init(void)
836 {
837 int err;
838
839 if (!machine_is_ams_delta())
840 return -ENODEV;
841
842 omap_cfg_reg(M14_1510_GPIO2);
843
844 /* Initialize the modem_nreset regulator consumer before use */
845 modem_priv.regulator = ERR_PTR(-ENODEV);
846
847 err = platform_device_register(&ams_delta_modem_device);
848
849 return err;
850 }
851 arch_initcall_sync(ams_delta_modem_init);
852
late_init(void)853 static int __init late_init(void)
854 {
855 int err;
856
857 err = modem_nreset_init();
858 if (err)
859 return err;
860
861 /*
862 * Once the modem device is registered, the modem_nreset
863 * regulator can be requested on behalf of that device.
864 */
865 modem_priv.regulator = regulator_get(&ams_delta_modem_device.dev,
866 "RESET#");
867 if (IS_ERR(modem_priv.regulator)) {
868 err = PTR_ERR(modem_priv.regulator);
869 goto unregister;
870 }
871 return 0;
872
873 unregister:
874 platform_device_unregister(&ams_delta_modem_device);
875 return err;
876 }
877
ams_delta_init_late(void)878 static void __init ams_delta_init_late(void)
879 {
880 omap1_init_late();
881 late_init();
882 }
883
ams_delta_map_io(void)884 static void __init ams_delta_map_io(void)
885 {
886 omap15xx_map_io();
887 iotable_init(ams_delta_io_desc, ARRAY_SIZE(ams_delta_io_desc));
888 }
889
890 MACHINE_START(AMS_DELTA, "Amstrad E3 (Delta)")
891 /* Maintainer: Jonathan McDowell <noodles@earth.li> */
892 .atag_offset = 0x100,
893 .map_io = ams_delta_map_io,
894 .init_early = omap1_init_early,
895 .init_irq = omap1_init_irq,
896 .handle_irq = omap1_handle_irq,
897 .init_machine = ams_delta_init,
898 .init_late = ams_delta_init_late,
899 .init_time = omap1_timer_init,
900 .restart = omap1_restart,
901 MACHINE_END
902