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
46static 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
131static 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
155static const struct omap_lcd_config ams_delta_lcd_config __initconst = {
156 .ctrl_name = "internal",
157};
158
159static 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
167static 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
178static struct bgpio_pdata latch1_pdata = {
179 .label = LATCH1_LABEL,
180 .base = -1,
181 .ngpio = LATCH1_NGPIO,
182};
183
184static 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
205static 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
216static struct bgpio_pdata latch2_pdata = {
217 .label = LATCH2_LABEL,
218 .base = -1,
219 .ngpio = LATCH2_NGPIO,
220};
221
222static 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
249static struct regulator_consumer_supply modem_nreset_consumers[] = {
250 REGULATOR_SUPPLY("RESET#", "serial8250.1"),
251 REGULATOR_SUPPLY("POR", "cx20442-codec"),
252};
253
254static 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
263static 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
271static 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
279static 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
288struct modem_private_data {
289 struct regulator *regulator;
290};
291
292static struct modem_private_data modem_priv;
293
294/*
295 * Define partitions for flash device
296 */
297
298static 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
319static struct gpio_nand_platdata nand_platdata = {
320 .parts = partition_info,
321 .num_parts = ARRAY_SIZE(partition_info),
322};
323
324static 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
335static 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
361static struct resource ams_delta_kp_resources[] = {
362 [0] = {
363 .start = INT_KEYBOARD,
364 .end = INT_KEYBOARD,
365 .flags = IORESOURCE_IRQ,
366 },
367};
368
369static const struct matrix_keymap_data ams_delta_keymap_data = {
370 .keymap = ams_delta_keymap,
371 .keymap_size = ARRAY_SIZE(ams_delta_keymap),
372};
373
374static 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
381static 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
391static struct platform_device ams_delta_lcd_device = {
392 .name = "lcd_ams_delta",
393 .id = -1,
394};
395
396static 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
404static 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
431static const struct gpio_led_platform_data leds_pdata __initconst = {
432 .leds = gpio_leds,
433 .num_leds = ARRAY_SIZE(gpio_leds),
434};
435
436static 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
454static struct platform_device ams_delta_audio_device = {
455 .name = "ams-delta-audio",
456 .id = -1,
457};
458
459static 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
473static struct platform_device cx20442_codec_device = {
474 .name = "cx20442-codec",
475 .id = -1,
476};
477
478static 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
491static 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
506static 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
514static 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
522static struct fixed_voltage_config keybrd_pwr_config = {
523 .supply_name = "keybrd_pwr",
524 .microvolts = 5000000,
525 .init_data = &keybrd_pwr_initdata,
526};
527
528static 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
536static 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
544static 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
556static 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
564static struct gpiod_hog ams_delta_gpio_hogs[] = {
565 GPIO_HOG(LATCH2_LABEL, LATCH2_PIN_KEYBRD_DATAOUT, "keybrd_dataout",
566 GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW),
567 {},
568};
569
570static struct plat_serial8250_port ams_delta_modem_ports[];
571
572/*
573 * Obtain MODEM IRQ GPIO descriptor using its hardware pin
574 * number and assign related IRQ number to the MODEM port.
575 * Keep the GPIO descriptor open so nobody steps in.
576 */
577static void __init modem_assign_irq(struct gpio_chip *chip)
578{
579 struct gpio_desc *gpiod;
580
581 gpiod = gpiochip_request_own_desc(gc: chip, hwnum: AMS_DELTA_GPIO_PIN_MODEM_IRQ,
582 label: "modem_irq", lflags: GPIO_ACTIVE_HIGH,
583 dflags: GPIOD_IN);
584 if (IS_ERR(ptr: gpiod)) {
585 pr_err("%s: modem IRQ GPIO request failed (%ld)\n", __func__,
586 PTR_ERR(gpiod));
587 } else {
588 ams_delta_modem_ports[0].irq = gpiod_to_irq(desc: gpiod);
589 }
590}
591
592/*
593 * The purpose of this function is to take care of proper initialization of
594 * devices and data structures which depend on GPIO lines provided by OMAP GPIO
595 * banks but their drivers don't use GPIO lookup tables or GPIO layer at all.
596 * The function may be called as soon as OMAP GPIO devices are probed.
597 * Since that happens at postcore_initcall, it can be called successfully
598 * from init_machine or later.
599 * Dependent devices may be registered from within this function or later.
600 */
601static void __init omap_gpio_deps_init(void)
602{
603 struct gpio_device *gdev;
604 struct gpio_chip *chip;
605
606 /*
607 * Some drivers may not use GPIO lookup tables but need to be provided
608 * with GPIO numbers. The same applies to GPIO based IRQ lines - some
609 * drivers may even not use GPIO layer but expect just IRQ numbers.
610 * We could either define GPIO lookup tables then use them on behalf
611 * of those devices, or we can use GPIO driver level methods for
612 * identification of GPIO and IRQ numbers.
613 *
614 * This reference will be leaked but that's alright as this device
615 * never goes down.
616 */
617 gdev = gpio_device_find_by_label(OMAP_GPIO_LABEL);
618 if (!gdev) {
619 pr_err("%s: OMAP GPIO device not found\n", __func__);
620 return;
621 }
622
623 chip = gpio_device_get_chip(gdev);
624
625 /*
626 * Start with FIQ initialization as it may have to request
627 * and release successfully each OMAP GPIO pin in turn.
628 */
629 ams_delta_init_fiq(chip, pdev: &ams_delta_serio_device);
630
631 modem_assign_irq(chip);
632}
633
634/*
635 * Initialize latch2 pins with values which are safe for dependent on-board
636 * devices or useful for their successull initialization even before GPIO
637 * driver takes control over the latch pins:
638 * - LATCH2_PIN_LCD_VBLEN = 0
639 * - LATCH2_PIN_LCD_NDISP = 0 Keep LCD device powered off before its
640 * driver takes control over it.
641 * - LATCH2_PIN_NAND_NCE = 0
642 * - LATCH2_PIN_NAND_NWP = 0 Keep NAND device down and write-
643 * protected before its driver takes
644 * control over it.
645 * - LATCH2_PIN_KEYBRD_PWR = 0 Keep keyboard powered off before serio
646 * driver takes control over it.
647 * - LATCH2_PIN_KEYBRD_DATAOUT = 0 Keep low to avoid corruption of first
648 * byte of data received from attached
649 * keyboard when serio device is probed;
650 * the pin is also hogged low by the latch2
651 * GPIO driver as soon as it is ready.
652 * - LATCH2_PIN_MODEM_NRESET = 1 Enable voice MODEM device, allowing for
653 * its successful probe even before a
654 * regulator it depends on, which in turn
655 * takes control over the pin, is set up.
656 * - LATCH2_PIN_MODEM_CODEC = 1 Attach voice MODEM CODEC data port
657 * to the MODEM so the CODEC is under
658 * control even if audio driver doesn't
659 * take it over.
660 */
661static void __init ams_delta_latch2_init(void)
662{
663 u16 latch2 = 1 << LATCH2_PIN_MODEM_NRESET | 1 << LATCH2_PIN_MODEM_CODEC;
664
665 __raw_writew(val: latch2, addr: IOMEM(LATCH2_VIRT));
666}
667
668static void __init ams_delta_init(void)
669{
670 struct platform_device *leds_pdev;
671
672 /* mux pins for uarts */
673 omap_cfg_reg(reg_cfg: UART1_TX);
674 omap_cfg_reg(reg_cfg: UART1_RTS);
675
676 /* parallel camera interface */
677 omap_cfg_reg(reg_cfg: H19_1610_CAM_EXCLK);
678 omap_cfg_reg(reg_cfg: J15_1610_CAM_LCLK);
679 omap_cfg_reg(reg_cfg: L18_1610_CAM_VS);
680 omap_cfg_reg(reg_cfg: L15_1610_CAM_HS);
681 omap_cfg_reg(reg_cfg: L19_1610_CAM_D0);
682 omap_cfg_reg(reg_cfg: K14_1610_CAM_D1);
683 omap_cfg_reg(reg_cfg: K15_1610_CAM_D2);
684 omap_cfg_reg(reg_cfg: K19_1610_CAM_D3);
685 omap_cfg_reg(reg_cfg: K18_1610_CAM_D4);
686 omap_cfg_reg(reg_cfg: J14_1610_CAM_D5);
687 omap_cfg_reg(reg_cfg: J19_1610_CAM_D6);
688 omap_cfg_reg(reg_cfg: J18_1610_CAM_D7);
689
690 omap_gpio_deps_init();
691 ams_delta_latch2_init();
692 gpiod_add_hogs(hogs: ams_delta_gpio_hogs);
693
694 omap_serial_init();
695 omap_register_i2c_bus(bus_id: 1, clkrate: 100, NULL, len: 0);
696
697 omap1_usb_init(pdata: &ams_delta_usb_config);
698 platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));
699
700 /*
701 * As soon as regulator consumers have been registered, assign their
702 * dev_names to consumer supply entries of respective regulators.
703 */
704 keybrd_pwr_consumers[0].dev_name =
705 dev_name(dev: &ams_delta_serio_device.dev);
706
707 /*
708 * Once consumer supply entries are populated with dev_names,
709 * register regulator devices. At this stage only the keyboard
710 * power regulator has its consumer supply table fully populated.
711 */
712 platform_device_register(&keybrd_pwr_device);
713
714 /*
715 * As soon as GPIO consumers have been registered, assign
716 * their dev_names to respective GPIO lookup tables.
717 */
718 ams_delta_audio_gpio_table.dev_id =
719 dev_name(dev: &ams_delta_audio_device.dev);
720 keybrd_pwr_gpio_table.dev_id = dev_name(dev: &keybrd_pwr_device.dev);
721 ams_delta_nand_gpio_table.dev_id = dev_name(dev: &ams_delta_nand_device.dev);
722 ams_delta_lcd_gpio_table.dev_id = dev_name(dev: &ams_delta_lcd_device.dev);
723
724 /*
725 * Once GPIO lookup tables are populated with dev_names, register them.
726 */
727 gpiod_add_lookup_tables(tables: ams_delta_gpio_tables,
728 ARRAY_SIZE(ams_delta_gpio_tables));
729
730 leds_pdev = gpio_led_register_device(PLATFORM_DEVID_NONE, pdata: &leds_pdata);
731 if (!IS_ERR_OR_NULL(ptr: leds_pdev)) {
732 leds_gpio_table.dev_id = dev_name(dev: &leds_pdev->dev);
733 gpiod_add_lookup_table(table: &leds_gpio_table);
734 }
735
736 omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1);
737
738 omapfb_set_lcd_config(config: &ams_delta_lcd_config);
739}
740
741static void modem_pm(struct uart_port *port, unsigned int state, unsigned old)
742{
743 struct modem_private_data *priv = port->private_data;
744 int ret;
745
746 if (!priv)
747 return;
748
749 if (IS_ERR(ptr: priv->regulator))
750 return;
751
752 if (state == old)
753 return;
754
755 if (state == 0)
756 ret = regulator_enable(regulator: priv->regulator);
757 else if (old == 0)
758 ret = regulator_disable(regulator: priv->regulator);
759 else
760 ret = 0;
761
762 if (ret)
763 dev_warn(port->dev,
764 "ams_delta modem_pm: failed to %sable regulator: %d\n",
765 state ? "dis" : "en", ret);
766}
767
768static struct plat_serial8250_port ams_delta_modem_ports[] = {
769 {
770 .membase = IOMEM(MODEM_VIRT),
771 .mapbase = MODEM_PHYS,
772 .irq = IRQ_NOTCONNECTED, /* changed later */
773 .flags = UPF_BOOT_AUTOCONF,
774 .irqflags = IRQF_TRIGGER_RISING,
775 .iotype = UPIO_MEM,
776 .regshift = 1,
777 .uartclk = BASE_BAUD * 16,
778 .pm = modem_pm,
779 .private_data = &modem_priv,
780 },
781 { },
782};
783
784static int ams_delta_modem_pm_activate(struct device *dev)
785{
786 modem_priv.regulator = regulator_get(dev, id: "RESET#");
787 if (IS_ERR(ptr: modem_priv.regulator))
788 return -EPROBE_DEFER;
789
790 return 0;
791}
792
793static struct dev_pm_domain ams_delta_modem_pm_domain = {
794 .activate = ams_delta_modem_pm_activate,
795};
796
797static struct platform_device ams_delta_modem_device = {
798 .name = "serial8250",
799 .id = PLAT8250_DEV_PLATFORM1,
800 .dev = {
801 .platform_data = ams_delta_modem_ports,
802 .pm_domain = &ams_delta_modem_pm_domain,
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 */
823static int __init ams_delta_modem_init(void)
824{
825 if (!machine_is_ams_delta())
826 return -ENODEV;
827
828 omap_cfg_reg(reg_cfg: M14_1510_GPIO2);
829
830 /* Initialize the modem_nreset regulator consumer before use */
831 modem_priv.regulator = ERR_PTR(error: -ENODEV);
832
833 return platform_device_register(&ams_delta_modem_device);
834}
835arch_initcall_sync(ams_delta_modem_init);
836
837static void __init ams_delta_map_io(void)
838{
839 omap1_map_io();
840 iotable_init(ams_delta_io_desc, ARRAY_SIZE(ams_delta_io_desc));
841}
842
843MACHINE_START(AMS_DELTA, "Amstrad E3 (Delta)")
844 /* Maintainer: Jonathan McDowell <noodles@earth.li> */
845 .atag_offset = 0x100,
846 .map_io = ams_delta_map_io,
847 .init_early = omap1_init_early,
848 .init_irq = omap1_init_irq,
849 .init_machine = ams_delta_init,
850 .init_late = omap1_init_late,
851 .init_time = omap1_timer_init,
852 .restart = omap1_restart,
853MACHINE_END
854

source code of linux/arch/arm/mach-omap1/board-ams-delta.c