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/property.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
47static 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
132static 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
156static const struct omap_lcd_config ams_delta_lcd_config __initconst = {
157 .ctrl_name = "internal",
158};
159
160static 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
168static 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
179static const struct property_entry latch1_gpio_props[] = {
180 PROPERTY_ENTRY_STRING("label", LATCH1_LABEL),
181 PROPERTY_ENTRY_U32("ngpios", LATCH1_NGPIO),
182 { }
183};
184
185static const struct platform_device_info latch1_gpio_devinfo = {
186 .name = "basic-mmio-gpio",
187 .id = 0,
188 .res = latch1_resources,
189 .num_res = ARRAY_SIZE(latch1_resources),
190 .properties = latch1_gpio_props,
191};
192
193#define LATCH1_PIN_LED_CAMERA 0
194#define LATCH1_PIN_LED_ADVERT 1
195#define LATCH1_PIN_LED_MAIL 2
196#define LATCH1_PIN_LED_HANDSFREE 3
197#define LATCH1_PIN_LED_VOICEMAIL 4
198#define LATCH1_PIN_LED_VOICE 5
199#define LATCH1_PIN_DOCKIT1 6
200#define LATCH1_PIN_DOCKIT2 7
201
202#define LATCH2_NGPIO 16
203
204static struct resource latch2_resources[] = {
205 [0] = {
206 .name = "dat",
207 .start = LATCH2_PHYS,
208 .end = LATCH2_PHYS + (LATCH2_NGPIO - 1) / 8,
209 .flags = IORESOURCE_MEM,
210 },
211};
212
213#define LATCH2_LABEL "latch2"
214
215static const struct property_entry latch2_gpio_props[] = {
216 PROPERTY_ENTRY_STRING("label", LATCH2_LABEL),
217 PROPERTY_ENTRY_U32("ngpios", LATCH2_NGPIO),
218 { }
219};
220
221static struct platform_device_info latch2_gpio_devinfo = {
222 .name = "basic-mmio-gpio",
223 .id = 1,
224 .res = latch2_resources,
225 .num_res = ARRAY_SIZE(latch2_resources),
226 .properties = latch2_gpio_props,
227};
228
229#define LATCH2_PIN_LCD_VBLEN 0
230#define LATCH2_PIN_LCD_NDISP 1
231#define LATCH2_PIN_NAND_NCE 2
232#define LATCH2_PIN_NAND_NRE 3
233#define LATCH2_PIN_NAND_NWP 4
234#define LATCH2_PIN_NAND_NWE 5
235#define LATCH2_PIN_NAND_ALE 6
236#define LATCH2_PIN_NAND_CLE 7
237#define LATCH2_PIN_KEYBRD_PWR 8
238#define LATCH2_PIN_KEYBRD_DATAOUT 9
239#define LATCH2_PIN_SCARD_RSTIN 10
240#define LATCH2_PIN_SCARD_CMDVCC 11
241#define LATCH2_PIN_MODEM_NRESET 12
242#define LATCH2_PIN_MODEM_CODEC 13
243#define LATCH2_PIN_HANDSFREE_MUTE 14
244#define LATCH2_PIN_HANDSET_MUTE 15
245
246static struct regulator_consumer_supply modem_nreset_consumers[] = {
247 REGULATOR_SUPPLY("RESET#", "serial8250.1"),
248 REGULATOR_SUPPLY("POR", "cx20442-codec"),
249};
250
251static struct regulator_init_data modem_nreset_data = {
252 .constraints = {
253 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
254 .boot_on = 1,
255 },
256 .num_consumer_supplies = ARRAY_SIZE(modem_nreset_consumers),
257 .consumer_supplies = modem_nreset_consumers,
258};
259
260static struct fixed_voltage_config modem_nreset_config = {
261 .supply_name = "modem_nreset",
262 .microvolts = 3300000,
263 .startup_delay = 25000,
264 .enabled_at_boot = 1,
265 .init_data = &modem_nreset_data,
266};
267
268static struct platform_device modem_nreset_device = {
269 .name = "reg-fixed-voltage",
270 .id = -1,
271 .dev = {
272 .platform_data = &modem_nreset_config,
273 },
274};
275
276static struct gpiod_lookup_table ams_delta_nreset_gpiod_table = {
277 .dev_id = "reg-fixed-voltage",
278 .table = {
279 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_NRESET,
280 NULL, GPIO_ACTIVE_HIGH),
281 { },
282 },
283};
284
285struct modem_private_data {
286 struct regulator *regulator;
287};
288
289static struct modem_private_data modem_priv;
290
291/*
292 * Define partitions for flash device
293 */
294
295static struct mtd_partition partition_info[] = {
296 { .name = "Kernel",
297 .offset = 0,
298 .size = 3 * SZ_1M + SZ_512K },
299 { .name = "u-boot",
300 .offset = 3 * SZ_1M + SZ_512K,
301 .size = SZ_256K },
302 { .name = "u-boot params",
303 .offset = 3 * SZ_1M + SZ_512K + SZ_256K,
304 .size = SZ_256K },
305 { .name = "Amstrad LDR",
306 .offset = 4 * SZ_1M,
307 .size = SZ_256K },
308 { .name = "File system",
309 .offset = 4 * SZ_1M + 1 * SZ_256K,
310 .size = 27 * SZ_1M },
311 { .name = "PBL reserved",
312 .offset = 32 * SZ_1M - 3 * SZ_256K,
313 .size = 3 * SZ_256K },
314};
315
316static struct gpio_nand_platdata nand_platdata = {
317 .parts = partition_info,
318 .num_parts = ARRAY_SIZE(partition_info),
319};
320
321static struct platform_device ams_delta_nand_device = {
322 .name = "ams-delta-nand",
323 .id = -1,
324 .dev = {
325 .platform_data = &nand_platdata,
326 },
327};
328
329#define OMAP_GPIO_LABEL "gpio-0-15"
330#define OMAP_MPUIO_LABEL "mpuio"
331
332static struct gpiod_lookup_table ams_delta_nand_gpio_table = {
333 .table = {
334 GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_NAND_RB, "rdy",
335 0),
336 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NCE, "nce",
337 GPIO_ACTIVE_LOW),
338 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NRE, "nre",
339 GPIO_ACTIVE_LOW),
340 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWP, "nwp",
341 GPIO_ACTIVE_LOW),
342 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWE, "nwe",
343 GPIO_ACTIVE_LOW),
344 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_ALE, "ale", 0),
345 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_CLE, "cle", 0),
346 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 0, "data", 0, 0),
347 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 1, "data", 1, 0),
348 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 2, "data", 2, 0),
349 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 3, "data", 3, 0),
350 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 4, "data", 4, 0),
351 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 5, "data", 5, 0),
352 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 6, "data", 6, 0),
353 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 7, "data", 7, 0),
354 { },
355 },
356};
357
358static struct resource ams_delta_kp_resources[] = {
359 [0] = {
360 .start = INT_KEYBOARD,
361 .end = INT_KEYBOARD,
362 .flags = IORESOURCE_IRQ,
363 },
364};
365
366static const struct matrix_keymap_data ams_delta_keymap_data = {
367 .keymap = ams_delta_keymap,
368 .keymap_size = ARRAY_SIZE(ams_delta_keymap),
369};
370
371static struct omap_kp_platform_data ams_delta_kp_data = {
372 .rows = 8,
373 .cols = 8,
374 .keymap_data = &ams_delta_keymap_data,
375 .delay = 9,
376};
377
378static struct platform_device ams_delta_kp_device = {
379 .name = "omap-keypad",
380 .id = -1,
381 .dev = {
382 .platform_data = &ams_delta_kp_data,
383 },
384 .num_resources = ARRAY_SIZE(ams_delta_kp_resources),
385 .resource = ams_delta_kp_resources,
386};
387
388static struct platform_device ams_delta_lcd_device = {
389 .name = "lcd_ams_delta",
390 .id = -1,
391};
392
393static struct gpiod_lookup_table ams_delta_lcd_gpio_table = {
394 .table = {
395 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_VBLEN, "vblen", 0),
396 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_NDISP, "ndisp", 0),
397 { },
398 },
399};
400
401static struct gpio_led gpio_leds[] __initdata = {
402 [LATCH1_PIN_LED_CAMERA] = {
403 .name = "camera",
404 .default_state = LEDS_GPIO_DEFSTATE_OFF,
405 },
406 [LATCH1_PIN_LED_ADVERT] = {
407 .name = "advert",
408 .default_state = LEDS_GPIO_DEFSTATE_OFF,
409 },
410 [LATCH1_PIN_LED_MAIL] = {
411 .name = "email",
412 .default_state = LEDS_GPIO_DEFSTATE_OFF,
413 },
414 [LATCH1_PIN_LED_HANDSFREE] = {
415 .name = "handsfree",
416 .default_state = LEDS_GPIO_DEFSTATE_OFF,
417 },
418 [LATCH1_PIN_LED_VOICEMAIL] = {
419 .name = "voicemail",
420 .default_state = LEDS_GPIO_DEFSTATE_OFF,
421 },
422 [LATCH1_PIN_LED_VOICE] = {
423 .name = "voice",
424 .default_state = LEDS_GPIO_DEFSTATE_OFF,
425 },
426};
427
428static const struct gpio_led_platform_data leds_pdata __initconst = {
429 .leds = gpio_leds,
430 .num_leds = ARRAY_SIZE(gpio_leds),
431};
432
433static struct gpiod_lookup_table leds_gpio_table = {
434 .table = {
435 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_CAMERA, NULL,
436 LATCH1_PIN_LED_CAMERA, 0),
437 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_ADVERT, NULL,
438 LATCH1_PIN_LED_ADVERT, 0),
439 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_MAIL, NULL,
440 LATCH1_PIN_LED_MAIL, 0),
441 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_HANDSFREE, NULL,
442 LATCH1_PIN_LED_HANDSFREE, 0),
443 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICEMAIL, NULL,
444 LATCH1_PIN_LED_VOICEMAIL, 0),
445 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICE, NULL,
446 LATCH1_PIN_LED_VOICE, 0),
447 { },
448 },
449};
450
451static struct platform_device ams_delta_audio_device = {
452 .name = "ams-delta-audio",
453 .id = -1,
454};
455
456static struct gpiod_lookup_table ams_delta_audio_gpio_table = {
457 .table = {
458 GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_HOOK_SWITCH,
459 "hook_switch", 0),
460 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_CODEC,
461 "modem_codec", 0),
462 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSFREE_MUTE,
463 "handsfree_mute", 0),
464 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSET_MUTE,
465 "handset_mute", 0),
466 { },
467 },
468};
469
470static struct platform_device cx20442_codec_device = {
471 .name = "cx20442-codec",
472 .id = -1,
473};
474
475static struct resource ams_delta_serio_resources[] = {
476 {
477 .flags = IORESOURCE_IRQ,
478 /*
479 * Initialize IRQ resource with invalid IRQ number.
480 * It will be replaced with dynamically allocated GPIO IRQ
481 * obtained from GPIO chip as soon as the chip is available.
482 */
483 .start = -EINVAL,
484 .end = -EINVAL,
485 },
486};
487
488static struct platform_device ams_delta_serio_device = {
489 .name = "ams-delta-serio",
490 .id = PLATFORM_DEVID_NONE,
491 .dev = {
492 /*
493 * Initialize .platform_data explicitly with NULL to
494 * indicate it is going to be used. It will be replaced
495 * with FIQ buffer address as soon as FIQ is initialized.
496 */
497 .platform_data = NULL,
498 },
499 .num_resources = ARRAY_SIZE(ams_delta_serio_resources),
500 .resource = ams_delta_serio_resources,
501};
502
503static struct regulator_consumer_supply keybrd_pwr_consumers[] = {
504 /*
505 * Initialize supply .dev_name with NULL. It will be replaced
506 * with serio dev_name() as soon as the serio device is registered.
507 */
508 REGULATOR_SUPPLY("vcc", NULL),
509};
510
511static struct regulator_init_data keybrd_pwr_initdata = {
512 .constraints = {
513 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
514 },
515 .num_consumer_supplies = ARRAY_SIZE(keybrd_pwr_consumers),
516 .consumer_supplies = keybrd_pwr_consumers,
517};
518
519static struct fixed_voltage_config keybrd_pwr_config = {
520 .supply_name = "keybrd_pwr",
521 .microvolts = 5000000,
522 .init_data = &keybrd_pwr_initdata,
523};
524
525static struct platform_device keybrd_pwr_device = {
526 .name = "reg-fixed-voltage",
527 .id = PLATFORM_DEVID_AUTO,
528 .dev = {
529 .platform_data = &keybrd_pwr_config,
530 },
531};
532
533static struct gpiod_lookup_table keybrd_pwr_gpio_table = {
534 .table = {
535 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_KEYBRD_PWR, NULL,
536 GPIO_ACTIVE_HIGH),
537 { },
538 },
539};
540
541static struct platform_device *ams_delta_devices[] __initdata = {
542 &ams_delta_kp_device,
543 &ams_delta_audio_device,
544 &ams_delta_serio_device,
545 &ams_delta_nand_device,
546 &ams_delta_lcd_device,
547 &cx20442_codec_device,
548 &modem_nreset_device,
549};
550
551static struct gpiod_lookup_table *ams_delta_gpio_tables[] __initdata = {
552 &ams_delta_nreset_gpiod_table,
553 &ams_delta_audio_gpio_table,
554 &keybrd_pwr_gpio_table,
555 &ams_delta_lcd_gpio_table,
556 &ams_delta_nand_gpio_table,
557};
558
559static struct gpiod_hog ams_delta_gpio_hogs[] = {
560 GPIO_HOG(LATCH2_LABEL, LATCH2_PIN_KEYBRD_DATAOUT, "keybrd_dataout",
561 GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW),
562 {},
563};
564
565static struct plat_serial8250_port ams_delta_modem_ports[];
566
567/*
568 * Obtain MODEM IRQ GPIO descriptor using its hardware pin
569 * number and assign related IRQ number to the MODEM port.
570 * Keep the GPIO descriptor open so nobody steps in.
571 */
572static void __init modem_assign_irq(struct gpio_chip *chip)
573{
574 struct gpio_desc *gpiod;
575
576 gpiod = gpiochip_request_own_desc(gc: chip, hwnum: AMS_DELTA_GPIO_PIN_MODEM_IRQ,
577 label: "modem_irq", lflags: GPIO_ACTIVE_HIGH,
578 dflags: GPIOD_IN);
579 if (IS_ERR(ptr: gpiod)) {
580 pr_err("%s: modem IRQ GPIO request failed (%ld)\n", __func__,
581 PTR_ERR(gpiod));
582 } else {
583 ams_delta_modem_ports[0].irq = gpiod_to_irq(desc: gpiod);
584 }
585}
586
587/*
588 * The purpose of this function is to take care of proper initialization of
589 * devices and data structures which depend on GPIO lines provided by OMAP GPIO
590 * banks but their drivers don't use GPIO lookup tables or GPIO layer at all.
591 * The function may be called as soon as OMAP GPIO devices are probed.
592 * Since that happens at postcore_initcall, it can be called successfully
593 * from init_machine or later.
594 * Dependent devices may be registered from within this function or later.
595 */
596static void __init omap_gpio_deps_init(void)
597{
598 struct gpio_device *gdev;
599 struct gpio_chip *chip;
600
601 /*
602 * Some drivers may not use GPIO lookup tables but need to be provided
603 * with GPIO numbers. The same applies to GPIO based IRQ lines - some
604 * drivers may even not use GPIO layer but expect just IRQ numbers.
605 * We could either define GPIO lookup tables then use them on behalf
606 * of those devices, or we can use GPIO driver level methods for
607 * identification of GPIO and IRQ numbers.
608 *
609 * This reference will be leaked but that's alright as this device
610 * never goes down.
611 */
612 gdev = gpio_device_find_by_label(OMAP_GPIO_LABEL);
613 if (!gdev) {
614 pr_err("%s: OMAP GPIO device not found\n", __func__);
615 return;
616 }
617
618 chip = gpio_device_get_chip(gdev);
619
620 /*
621 * Start with FIQ initialization as it may have to request
622 * and release successfully each OMAP GPIO pin in turn.
623 */
624 ams_delta_init_fiq(chip, pdev: &ams_delta_serio_device);
625
626 modem_assign_irq(chip);
627}
628
629/*
630 * Initialize latch2 pins with values which are safe for dependent on-board
631 * devices or useful for their successull initialization even before GPIO
632 * driver takes control over the latch pins:
633 * - LATCH2_PIN_LCD_VBLEN = 0
634 * - LATCH2_PIN_LCD_NDISP = 0 Keep LCD device powered off before its
635 * driver takes control over it.
636 * - LATCH2_PIN_NAND_NCE = 0
637 * - LATCH2_PIN_NAND_NWP = 0 Keep NAND device down and write-
638 * protected before its driver takes
639 * control over it.
640 * - LATCH2_PIN_KEYBRD_PWR = 0 Keep keyboard powered off before serio
641 * driver takes control over it.
642 * - LATCH2_PIN_KEYBRD_DATAOUT = 0 Keep low to avoid corruption of first
643 * byte of data received from attached
644 * keyboard when serio device is probed;
645 * the pin is also hogged low by the latch2
646 * GPIO driver as soon as it is ready.
647 * - LATCH2_PIN_MODEM_NRESET = 1 Enable voice MODEM device, allowing for
648 * its successful probe even before a
649 * regulator it depends on, which in turn
650 * takes control over the pin, is set up.
651 * - LATCH2_PIN_MODEM_CODEC = 1 Attach voice MODEM CODEC data port
652 * to the MODEM so the CODEC is under
653 * control even if audio driver doesn't
654 * take it over.
655 */
656static void __init ams_delta_latch2_init(void)
657{
658 u16 latch2 = 1 << LATCH2_PIN_MODEM_NRESET | 1 << LATCH2_PIN_MODEM_CODEC;
659
660 __raw_writew(val: latch2, addr: IOMEM(LATCH2_VIRT));
661}
662
663static void __init ams_delta_init(void)
664{
665 struct platform_device *leds_pdev;
666
667 /* mux pins for uarts */
668 omap_cfg_reg(reg_cfg: UART1_TX);
669 omap_cfg_reg(reg_cfg: UART1_RTS);
670
671 /* parallel camera interface */
672 omap_cfg_reg(reg_cfg: H19_1610_CAM_EXCLK);
673 omap_cfg_reg(reg_cfg: J15_1610_CAM_LCLK);
674 omap_cfg_reg(reg_cfg: L18_1610_CAM_VS);
675 omap_cfg_reg(reg_cfg: L15_1610_CAM_HS);
676 omap_cfg_reg(reg_cfg: L19_1610_CAM_D0);
677 omap_cfg_reg(reg_cfg: K14_1610_CAM_D1);
678 omap_cfg_reg(reg_cfg: K15_1610_CAM_D2);
679 omap_cfg_reg(reg_cfg: K19_1610_CAM_D3);
680 omap_cfg_reg(reg_cfg: K18_1610_CAM_D4);
681 omap_cfg_reg(reg_cfg: J14_1610_CAM_D5);
682 omap_cfg_reg(reg_cfg: J19_1610_CAM_D6);
683 omap_cfg_reg(reg_cfg: J18_1610_CAM_D7);
684
685 omap_gpio_deps_init();
686 ams_delta_latch2_init();
687 gpiod_add_hogs(hogs: ams_delta_gpio_hogs);
688
689 omap_serial_init();
690 omap_register_i2c_bus(bus_id: 1, clkrate: 100, NULL, len: 0);
691
692 omap1_usb_init(pdata: &ams_delta_usb_config);
693 platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));
694
695 platform_device_register_full(pdevinfo: &latch1_gpio_devinfo);
696 platform_device_register_full(pdevinfo: &latch2_gpio_devinfo);
697
698 /*
699 * As soon as regulator consumers have been registered, assign their
700 * dev_names to consumer supply entries of respective regulators.
701 */
702 keybrd_pwr_consumers[0].dev_name =
703 dev_name(dev: &ams_delta_serio_device.dev);
704
705 /*
706 * Once consumer supply entries are populated with dev_names,
707 * register regulator devices. At this stage only the keyboard
708 * power regulator has its consumer supply table fully populated.
709 */
710 platform_device_register(&keybrd_pwr_device);
711
712 /*
713 * As soon as GPIO consumers have been registered, assign
714 * their dev_names to respective GPIO lookup tables.
715 */
716 ams_delta_audio_gpio_table.dev_id =
717 dev_name(dev: &ams_delta_audio_device.dev);
718 keybrd_pwr_gpio_table.dev_id = dev_name(dev: &keybrd_pwr_device.dev);
719 ams_delta_nand_gpio_table.dev_id = dev_name(dev: &ams_delta_nand_device.dev);
720 ams_delta_lcd_gpio_table.dev_id = dev_name(dev: &ams_delta_lcd_device.dev);
721
722 /*
723 * Once GPIO lookup tables are populated with dev_names, register them.
724 */
725 gpiod_add_lookup_tables(tables: ams_delta_gpio_tables,
726 ARRAY_SIZE(ams_delta_gpio_tables));
727
728 leds_pdev = gpio_led_register_device(PLATFORM_DEVID_NONE, pdata: &leds_pdata);
729 if (!IS_ERR_OR_NULL(ptr: leds_pdev)) {
730 leds_gpio_table.dev_id = dev_name(dev: &leds_pdev->dev);
731 gpiod_add_lookup_table(table: &leds_gpio_table);
732 }
733
734 omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1);
735
736 omapfb_set_lcd_config(config: &ams_delta_lcd_config);
737}
738
739static void modem_pm(struct uart_port *port, unsigned int state, unsigned old)
740{
741 struct modem_private_data *priv = port->private_data;
742 int ret;
743
744 if (!priv)
745 return;
746
747 if (IS_ERR(ptr: priv->regulator))
748 return;
749
750 if (state == old)
751 return;
752
753 if (state == 0)
754 ret = regulator_enable(regulator: priv->regulator);
755 else if (old == 0)
756 ret = regulator_disable(regulator: priv->regulator);
757 else
758 ret = 0;
759
760 if (ret)
761 dev_warn(port->dev,
762 "ams_delta modem_pm: failed to %sable regulator: %d\n",
763 state ? "dis" : "en", ret);
764}
765
766static struct plat_serial8250_port ams_delta_modem_ports[] = {
767 {
768 .membase = IOMEM(MODEM_VIRT),
769 .mapbase = MODEM_PHYS,
770 .irq = IRQ_NOTCONNECTED, /* changed later */
771 .flags = UPF_BOOT_AUTOCONF,
772 .irqflags = IRQF_TRIGGER_RISING,
773 .iotype = UPIO_MEM,
774 .regshift = 1,
775 .uartclk = BASE_BAUD * 16,
776 .pm = modem_pm,
777 .private_data = &modem_priv,
778 },
779 { },
780};
781
782static int ams_delta_modem_pm_activate(struct device *dev)
783{
784 modem_priv.regulator = regulator_get(dev, id: "RESET#");
785 if (IS_ERR(ptr: modem_priv.regulator))
786 return -EPROBE_DEFER;
787
788 return 0;
789}
790
791static struct dev_pm_domain ams_delta_modem_pm_domain = {
792 .activate = ams_delta_modem_pm_activate,
793};
794
795static struct platform_device ams_delta_modem_device = {
796 .name = "serial8250",
797 .id = PLAT8250_DEV_PLATFORM1,
798 .dev = {
799 .platform_data = ams_delta_modem_ports,
800 .pm_domain = &ams_delta_modem_pm_domain,
801 },
802};
803
804/*
805 * This function expects MODEM IRQ number already assigned to the port.
806 * The MODEM device requires its RESET# pin kept high during probe.
807 * That requirement can be fulfilled in several ways:
808 * - with a descriptor of already functional modem_nreset regulator
809 * assigned to the MODEM private data,
810 * - with the regulator not yet controlled by modem_pm function but
811 * already enabled by default on probe,
812 * - before the modem_nreset regulator is probed, with the pin already
813 * set high explicitly.
814 * The last one is already guaranteed by ams_delta_latch2_init() called
815 * from machine_init.
816 * In order to avoid taking over ttyS0 device slot, the MODEM device
817 * should be registered after OMAP serial ports. Since those ports
818 * are registered at arch_initcall, this function can be called safely
819 * at arch_initcall_sync earliest.
820 */
821static int __init ams_delta_modem_init(void)
822{
823 if (!machine_is_ams_delta())
824 return -ENODEV;
825
826 omap_cfg_reg(reg_cfg: M14_1510_GPIO2);
827
828 /* Initialize the modem_nreset regulator consumer before use */
829 modem_priv.regulator = ERR_PTR(error: -ENODEV);
830
831 return platform_device_register(&ams_delta_modem_device);
832}
833arch_initcall_sync(ams_delta_modem_init);
834
835static void __init ams_delta_map_io(void)
836{
837 omap1_map_io();
838 iotable_init(ams_delta_io_desc, ARRAY_SIZE(ams_delta_io_desc));
839}
840
841MACHINE_START(AMS_DELTA, "Amstrad E3 (Delta)")
842 /* Maintainer: Jonathan McDowell <noodles@earth.li> */
843 .atag_offset = 0x100,
844 .map_io = ams_delta_map_io,
845 .init_early = omap1_init_early,
846 .init_irq = omap1_init_irq,
847 .init_machine = ams_delta_init,
848 .init_late = omap1_init_late,
849 .init_time = omap1_timer_init,
850 .restart = omap1_restart,
851MACHINE_END
852

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