board-ams-delta.c

  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(chip, AMS_DELTA_GPIO_PIN_MODEM_IRQ,
577					  "modem_irq", GPIO_ACTIVE_HIGH,
578					  GPIOD_IN);
579	if (IS_ERR(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(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, &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(latch2, 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(UART1_TX);
669	omap_cfg_reg(UART1_RTS);
670
671	/* parallel camera interface */
672	omap_cfg_reg(H19_1610_CAM_EXCLK);
673	omap_cfg_reg(J15_1610_CAM_LCLK);
674	omap_cfg_reg(L18_1610_CAM_VS);
675	omap_cfg_reg(L15_1610_CAM_HS);
676	omap_cfg_reg(L19_1610_CAM_D0);
677	omap_cfg_reg(K14_1610_CAM_D1);
678	omap_cfg_reg(K15_1610_CAM_D2);
679	omap_cfg_reg(K19_1610_CAM_D3);
680	omap_cfg_reg(K18_1610_CAM_D4);
681	omap_cfg_reg(J14_1610_CAM_D5);
682	omap_cfg_reg(J19_1610_CAM_D6);
683	omap_cfg_reg(J18_1610_CAM_D7);
684
685	omap_gpio_deps_init();
686	ams_delta_latch2_init();
687	gpiod_add_hogs(ams_delta_gpio_hogs);
688
689	omap_serial_init();
690	omap_register_i2c_bus(1, 100, NULL, 0);
691
692	omap1_usb_init(&ams_delta_usb_config);
693	platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));
694
695	platform_device_register_full(&latch1_gpio_devinfo);
696	platform_device_register_full(&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(&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(&ams_delta_audio_device.dev);
718	keybrd_pwr_gpio_table.dev_id = dev_name(&keybrd_pwr_device.dev);
719	ams_delta_nand_gpio_table.dev_id = dev_name(&ams_delta_nand_device.dev);
720	ams_delta_lcd_gpio_table.dev_id = dev_name(&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(ams_delta_gpio_tables,
726				ARRAY_SIZE(ams_delta_gpio_tables));
727
728	leds_pdev = gpio_led_register_device(PLATFORM_DEVID_NONE, &leds_pdata);
729	if (!IS_ERR_OR_NULL(leds_pdev)) {
730		leds_gpio_table.dev_id = dev_name(&leds_pdev->dev);
731		gpiod_add_lookup_table(&leds_gpio_table);
732	}
733
734	omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1);
735
736	omapfb_set_lcd_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(priv->regulator))
748		return;
749
750	if (state == old)
751		return;
752
753	if (state == 0)
754		ret = regulator_enable(priv->regulator);
755	else if (old == 0)
756		ret = regulator_disable(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, "RESET#");
785	if (IS_ERR(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(M14_1510_GPIO2);
827
828	/* Initialize the modem_nreset regulator consumer before use */
829	modem_priv.regulator = ERR_PTR(-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