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(chip, AMS_DELTA_GPIO_PIN_MODEM_IRQ,
582					  "modem_irq", GPIO_ACTIVE_HIGH,
583					  GPIOD_IN);
584	if (IS_ERR(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(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, &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(latch2, 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(UART1_TX);
674	omap_cfg_reg(UART1_RTS);
675
676	/* parallel camera interface */
677	omap_cfg_reg(H19_1610_CAM_EXCLK);
678	omap_cfg_reg(J15_1610_CAM_LCLK);
679	omap_cfg_reg(L18_1610_CAM_VS);
680	omap_cfg_reg(L15_1610_CAM_HS);
681	omap_cfg_reg(L19_1610_CAM_D0);
682	omap_cfg_reg(K14_1610_CAM_D1);
683	omap_cfg_reg(K15_1610_CAM_D2);
684	omap_cfg_reg(K19_1610_CAM_D3);
685	omap_cfg_reg(K18_1610_CAM_D4);
686	omap_cfg_reg(J14_1610_CAM_D5);
687	omap_cfg_reg(J19_1610_CAM_D6);
688	omap_cfg_reg(J18_1610_CAM_D7);
689
690	omap_gpio_deps_init();
691	ams_delta_latch2_init();
692	gpiod_add_hogs(ams_delta_gpio_hogs);
693
694	omap_serial_init();
695	omap_register_i2c_bus(1, 100, NULL, 0);
696
697	omap1_usb_init(&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(&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(&ams_delta_audio_device.dev);
720	keybrd_pwr_gpio_table.dev_id = dev_name(&keybrd_pwr_device.dev);
721	ams_delta_nand_gpio_table.dev_id = dev_name(&ams_delta_nand_device.dev);
722	ams_delta_lcd_gpio_table.dev_id = dev_name(&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(ams_delta_gpio_tables,
728				ARRAY_SIZE(ams_delta_gpio_tables));
729
730	leds_pdev = gpio_led_register_device(PLATFORM_DEVID_NONE, &leds_pdata);
731	if (!IS_ERR_OR_NULL(leds_pdev)) {
732		leds_gpio_table.dev_id = dev_name(&leds_pdev->dev);
733		gpiod_add_lookup_table(&leds_gpio_table);
734	}
735
736	omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1);
737
738	omapfb_set_lcd_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(priv->regulator))
750		return;
751
752	if (state == old)
753		return;
754
755	if (state == 0)
756		ret = regulator_enable(priv->regulator);
757	else if (old == 0)
758		ret = regulator_disable(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, "RESET#");
787	if (IS_ERR(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(M14_1510_GPIO2);
829
830	/* Initialize the modem_nreset regulator consumer before use */
831	modem_priv.regulator = ERR_PTR(-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