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 */
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
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
modem_nreset_init(void)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 */
ams_delta_modem_init(void)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
late_init(void)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
ams_delta_init_late(void)866 static void __init ams_delta_init_late(void)
867 {
868 omap1_init_late();
869 late_init();
870 }
871
ams_delta_map_io(void)872 static void __init ams_delta_map_io(void)
873 {
874 omap15xx_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