2 * linux/arch/arm/mach-omap1/board-ams-delta.c
4 * Modified from board-generic.c
6 * Board specific inits for the Amstrad E3 (codename Delta) videophone
8 * Copyright (C) 2006 Jonathan McDowell <noodles@earth.li>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
14 #include <linux/gpio/driver.h>
15 #include <linux/gpio/machine.h>
16 #include <linux/gpio.h>
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/input.h>
20 #include <linux/interrupt.h>
21 #include <linux/leds.h>
22 #include <linux/platform_device.h>
23 #include <linux/regulator/consumer.h>
24 #include <linux/regulator/fixed.h>
25 #include <linux/regulator/machine.h>
26 #include <linux/serial_8250.h>
27 #include <linux/export.h>
28 #include <linux/omapfb.h>
30 #include <linux/platform_data/gpio-omap.h>
32 #include <media/soc_camera.h>
34 #include <asm/serial.h>
35 #include <asm/mach-types.h>
36 #include <asm/mach/arch.h>
37 #include <asm/mach/map.h>
39 #include <mach/board-ams-delta.h>
40 #include <linux/platform_data/keypad-omap.h>
43 #include <mach/hardware.h>
47 #include "ams-delta-fiq.h"
51 static const unsigned int ams_delta_keymap[] = {
52 KEY(0, 0, KEY_F1), /* Advert */
54 KEY(0, 3, KEY_COFFEE), /* Games */
55 KEY(0, 2, KEY_QUESTION), /* Directory */
56 KEY(2, 3, KEY_CONNECT), /* Internet */
57 KEY(1, 2, KEY_SHOP), /* Services */
58 KEY(1, 1, KEY_PHONE), /* VoiceMail */
60 KEY(0, 1, KEY_DELETE), /* Delete */
61 KEY(2, 2, KEY_PLAY), /* Play */
62 KEY(1, 0, KEY_PAGEUP), /* Up */
63 KEY(1, 3, KEY_PAGEDOWN), /* Down */
64 KEY(2, 0, KEY_EMAIL), /* ReadEmail */
65 KEY(2, 1, KEY_STOP), /* Stop */
67 /* Numeric keypad portion */
78 KEY(3, 7, KEY_KPASTERISK),
79 KEY(3, 5, KEY_KPDOT), /* # key */
80 KEY(7, 2, KEY_NUMLOCK), /* Mute */
81 KEY(7, 1, KEY_KPMINUS), /* Recall */
82 KEY(6, 1, KEY_KPPLUS), /* Redial */
83 KEY(7, 6, KEY_KPSLASH), /* Handsfree */
84 KEY(6, 0, KEY_ENTER), /* Video */
86 KEY(7, 4, KEY_CAMERA), /* Photo */
88 KEY(0, 4, KEY_F2), /* Home */
89 KEY(1, 4, KEY_F3), /* Office */
90 KEY(2, 4, KEY_F4), /* Mobile */
91 KEY(7, 7, KEY_F5), /* SMS */
92 KEY(7, 5, KEY_F6), /* Email */
94 /* QWERTY portion of keypad */
123 KEY(6, 2, KEY_SPACE),
125 KEY(7, 0, KEY_LEFTSHIFT), /* Vol up */
126 KEY(7, 3, KEY_LEFTCTRL), /* Vol down */
129 #define LATCH1_PHYS 0x01000000
130 #define LATCH1_VIRT 0xEA000000
131 #define MODEM_PHYS 0x04000000
132 #define MODEM_VIRT 0xEB000000
133 #define LATCH2_PHYS 0x08000000
134 #define LATCH2_VIRT 0xEC000000
136 static struct map_desc ams_delta_io_desc[] __initdata = {
137 /* AMS_DELTA_LATCH1 */
139 .virtual = LATCH1_VIRT,
140 .pfn = __phys_to_pfn(LATCH1_PHYS),
141 .length = 0x01000000,
144 /* AMS_DELTA_LATCH2 */
146 .virtual = LATCH2_VIRT,
147 .pfn = __phys_to_pfn(LATCH2_PHYS),
148 .length = 0x01000000,
151 /* AMS_DELTA_MODEM */
153 .virtual = MODEM_VIRT,
154 .pfn = __phys_to_pfn(MODEM_PHYS),
155 .length = 0x01000000,
160 static const struct omap_lcd_config ams_delta_lcd_config __initconst = {
161 .ctrl_name = "internal",
164 static struct omap_usb_config ams_delta_usb_config __initdata = {
170 #define LATCH1_GPIO_BASE 232
171 #define LATCH1_NGPIO 8
173 static struct resource latch1_resources[] = {
176 .start = LATCH1_PHYS,
177 .end = LATCH1_PHYS + (LATCH1_NGPIO - 1) / 8,
178 .flags = IORESOURCE_MEM,
182 #define LATCH1_LABEL "latch1"
184 static struct bgpio_pdata latch1_pdata = {
185 .label = LATCH1_LABEL,
186 .base = LATCH1_GPIO_BASE,
187 .ngpio = LATCH1_NGPIO,
190 static struct platform_device latch1_gpio_device = {
191 .name = "basic-mmio-gpio",
193 .resource = latch1_resources,
194 .num_resources = ARRAY_SIZE(latch1_resources),
196 .platform_data = &latch1_pdata,
200 #define LATCH1_PIN_LED_CAMERA 0
201 #define LATCH1_PIN_LED_ADVERT 1
202 #define LATCH1_PIN_LED_MAIL 2
203 #define LATCH1_PIN_LED_HANDSFREE 3
204 #define LATCH1_PIN_LED_VOICEMAIL 4
205 #define LATCH1_PIN_LED_VOICE 5
206 #define LATCH1_PIN_DOCKIT1 6
207 #define LATCH1_PIN_DOCKIT2 7
209 static struct resource latch2_resources[] = {
212 .start = LATCH2_PHYS,
213 .end = LATCH2_PHYS + (AMS_DELTA_LATCH2_NGPIO - 1) / 8,
214 .flags = IORESOURCE_MEM,
218 #define LATCH2_LABEL "latch2"
220 static struct bgpio_pdata latch2_pdata = {
221 .label = LATCH2_LABEL,
222 .base = AMS_DELTA_LATCH2_GPIO_BASE,
223 .ngpio = AMS_DELTA_LATCH2_NGPIO,
226 static struct platform_device latch2_gpio_device = {
227 .name = "basic-mmio-gpio",
229 .resource = latch2_resources,
230 .num_resources = ARRAY_SIZE(latch2_resources),
232 .platform_data = &latch2_pdata,
236 #define LATCH2_PIN_LCD_VBLEN 0
237 #define LATCH2_PIN_LCD_NDISP 1
238 #define LATCH2_PIN_NAND_NCE 2
239 #define LATCH2_PIN_NAND_NRE 3
240 #define LATCH2_PIN_NAND_NWP 4
241 #define LATCH2_PIN_NAND_NWE 5
242 #define LATCH2_PIN_NAND_ALE 6
243 #define LATCH2_PIN_NAND_CLE 7
244 #define LATCH2_PIN_KEYBRD_PWR 8
245 #define LATCH2_PIN_KEYBRD_DATAOUT 9
246 #define LATCH2_PIN_SCARD_RSTIN 10
247 #define LATCH2_PIN_SCARD_CMDVCC 11
248 #define LATCH2_PIN_MODEM_NRESET 12
249 #define LATCH2_PIN_MODEM_CODEC 13
250 #define LATCH2_PIN_HOOKFLASH1 14
251 #define LATCH2_PIN_HOOKFLASH2 15
253 static struct regulator_consumer_supply modem_nreset_consumers[] = {
254 REGULATOR_SUPPLY("RESET#", "serial8250.1"),
255 REGULATOR_SUPPLY("POR", "cx20442-codec"),
258 static struct regulator_init_data modem_nreset_data = {
260 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
263 .num_consumer_supplies = ARRAY_SIZE(modem_nreset_consumers),
264 .consumer_supplies = modem_nreset_consumers,
267 static struct fixed_voltage_config modem_nreset_config = {
268 .supply_name = "modem_nreset",
269 .microvolts = 3300000,
270 .startup_delay = 25000,
272 .enabled_at_boot = 1,
273 .init_data = &modem_nreset_data,
276 static struct platform_device modem_nreset_device = {
277 .name = "reg-fixed-voltage",
280 .platform_data = &modem_nreset_config,
284 static struct gpiod_lookup_table ams_delta_nreset_gpiod_table = {
285 .dev_id = "reg-fixed-voltage",
287 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_NRESET,
288 NULL, GPIO_ACTIVE_HIGH),
293 struct modem_private_data {
294 struct regulator *regulator;
297 static struct modem_private_data modem_priv;
299 static struct platform_device ams_delta_nand_device = {
300 .name = "ams-delta-nand",
304 #define OMAP_GPIO_LABEL "gpio-0-15"
305 #define OMAP_MPUIO_LABEL "mpuio"
307 static struct gpiod_lookup_table ams_delta_nand_gpio_table = {
309 GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_NAND_RB, "rdy",
311 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NCE, "nce", 0),
312 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NRE, "nre", 0),
313 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWP, "nwp", 0),
314 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWE, "nwe", 0),
315 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_ALE, "ale", 0),
316 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_CLE, "cle", 0),
317 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 0, "data", 0, 0),
318 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 1, "data", 1, 0),
319 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 2, "data", 2, 0),
320 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 3, "data", 3, 0),
321 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 4, "data", 4, 0),
322 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 5, "data", 5, 0),
323 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 6, "data", 6, 0),
324 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 7, "data", 7, 0),
329 static struct resource ams_delta_kp_resources[] = {
331 .start = INT_KEYBOARD,
333 .flags = IORESOURCE_IRQ,
337 static const struct matrix_keymap_data ams_delta_keymap_data = {
338 .keymap = ams_delta_keymap,
339 .keymap_size = ARRAY_SIZE(ams_delta_keymap),
342 static struct omap_kp_platform_data ams_delta_kp_data = {
345 .keymap_data = &ams_delta_keymap_data,
349 static struct platform_device ams_delta_kp_device = {
350 .name = "omap-keypad",
353 .platform_data = &ams_delta_kp_data,
355 .num_resources = ARRAY_SIZE(ams_delta_kp_resources),
356 .resource = ams_delta_kp_resources,
359 static struct platform_device ams_delta_lcd_device = {
360 .name = "lcd_ams_delta",
364 static struct gpiod_lookup_table ams_delta_lcd_gpio_table = {
366 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_VBLEN, "vblen", 0),
367 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_NDISP, "ndisp", 0),
373 * Dynamically allocated GPIO numbers must be obtained fromm GPIO device
374 * before they can be put in the gpio_led table. Before that happens,
375 * initialize the table with invalid GPIO numbers, not 0.
377 static struct gpio_led gpio_leds[] __initdata = {
378 [LATCH1_PIN_LED_CAMERA] = {
381 .default_state = LEDS_GPIO_DEFSTATE_OFF,
382 #ifdef CONFIG_LEDS_TRIGGERS
383 .default_trigger = "ams_delta_camera",
386 [LATCH1_PIN_LED_ADVERT] = {
389 .default_state = LEDS_GPIO_DEFSTATE_OFF,
391 [LATCH1_PIN_LED_MAIL] = {
394 .default_state = LEDS_GPIO_DEFSTATE_OFF,
396 [LATCH1_PIN_LED_HANDSFREE] = {
399 .default_state = LEDS_GPIO_DEFSTATE_OFF,
401 [LATCH1_PIN_LED_VOICEMAIL] = {
404 .default_state = LEDS_GPIO_DEFSTATE_OFF,
406 [LATCH1_PIN_LED_VOICE] = {
409 .default_state = LEDS_GPIO_DEFSTATE_OFF,
413 static const struct gpio_led_platform_data leds_pdata __initconst = {
415 .num_leds = ARRAY_SIZE(gpio_leds),
418 static struct i2c_board_info ams_delta_camera_board_info[] = {
420 I2C_BOARD_INFO("ov6650", 0x60),
424 #ifdef CONFIG_LEDS_TRIGGERS
425 DEFINE_LED_TRIGGER(ams_delta_camera_led_trigger);
427 static int ams_delta_camera_power(struct device *dev, int power)
433 led_trigger_event(ams_delta_camera_led_trigger, LED_FULL);
435 led_trigger_event(ams_delta_camera_led_trigger, LED_OFF);
439 #define ams_delta_camera_power NULL
442 static struct soc_camera_link ams_delta_iclink = {
443 .bus_id = 0, /* OMAP1 SoC camera bus */
445 .board_info = &ams_delta_camera_board_info[0],
446 .module_name = "ov6650",
447 .power = ams_delta_camera_power,
450 static struct platform_device ams_delta_camera_device = {
451 .name = "soc-camera-pdrv",
454 .platform_data = &ams_delta_iclink,
458 static struct omap1_cam_platform_data ams_delta_camera_platform_data = {
459 .camexclk_khz = 12000, /* default 12MHz clock, no extra DPLL */
460 .lclk_khz_max = 1334, /* results in 5fps CIF, 10fps QCIF */
463 static struct platform_device ams_delta_audio_device = {
464 .name = "ams-delta-audio",
468 static struct gpiod_lookup_table ams_delta_audio_gpio_table = {
470 GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_HOOK_SWITCH,
472 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_CODEC,
478 static struct platform_device cx20442_codec_device = {
479 .name = "cx20442-codec",
483 static struct resource ams_delta_serio_resources[] = {
485 .flags = IORESOURCE_IRQ,
487 * Initialize IRQ resource with invalid IRQ number.
488 * It will be replaced with dynamically allocated GPIO IRQ
489 * obtained from GPIO chip as soon as the chip is available.
496 static struct platform_device ams_delta_serio_device = {
497 .name = "ams-delta-serio",
498 .id = PLATFORM_DEVID_NONE,
501 * Initialize .platform_data explicitly with NULL to
502 * indicate it is going to be used. It will be replaced
503 * with FIQ buffer address as soon as FIQ is initialized.
505 .platform_data = NULL,
507 .num_resources = ARRAY_SIZE(ams_delta_serio_resources),
508 .resource = ams_delta_serio_resources,
511 static struct regulator_consumer_supply keybrd_pwr_consumers[] = {
513 * Initialize supply .dev_name with NULL. It will be replaced
514 * with serio dev_name() as soon as the serio device is registered.
516 REGULATOR_SUPPLY("vcc", NULL),
519 static struct regulator_init_data keybrd_pwr_initdata = {
521 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
523 .num_consumer_supplies = ARRAY_SIZE(keybrd_pwr_consumers),
524 .consumer_supplies = keybrd_pwr_consumers,
527 static struct fixed_voltage_config keybrd_pwr_config = {
528 .supply_name = "keybrd_pwr",
529 .microvolts = 5000000,
531 .init_data = &keybrd_pwr_initdata,
534 static struct platform_device keybrd_pwr_device = {
535 .name = "reg-fixed-voltage",
536 .id = PLATFORM_DEVID_AUTO,
538 .platform_data = &keybrd_pwr_config,
542 static struct gpiod_lookup_table keybrd_pwr_gpio_table = {
544 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_KEYBRD_PWR, NULL,
550 static struct platform_device *ams_delta_devices[] __initdata = {
553 &ams_delta_kp_device,
554 &ams_delta_camera_device,
555 &ams_delta_audio_device,
556 &ams_delta_serio_device,
557 &ams_delta_nand_device,
558 &ams_delta_lcd_device,
559 &cx20442_codec_device,
562 static struct gpiod_lookup_table *ams_delta_gpio_tables[] __initdata = {
563 &ams_delta_nreset_gpiod_table,
564 &ams_delta_audio_gpio_table,
565 &keybrd_pwr_gpio_table,
566 &ams_delta_lcd_gpio_table,
567 &ams_delta_nand_gpio_table,
571 * Some drivers may not use GPIO lookup tables but need to be provided
572 * with GPIO numbers. The same applies to GPIO based IRQ lines - some
573 * drivers may even not use GPIO layer but expect just IRQ numbers.
574 * We could either define GPIO lookup tables then use them on behalf
575 * of those devices, or we can use GPIO driver level methods for
576 * identification of GPIO and IRQ numbers. For the purpose of the latter,
577 * defina a helper function which identifies GPIO chips by their labels.
579 static int gpiochip_match_by_label(struct gpio_chip *chip, void *data)
583 return !strcmp(label, chip->label);
586 static struct gpiod_hog ams_delta_gpio_hogs[] = {
587 GPIO_HOG(LATCH2_LABEL, LATCH2_PIN_KEYBRD_DATAOUT, "keybrd_dataout",
588 GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW),
592 static struct plat_serial8250_port ams_delta_modem_ports[];
595 * Obtain MODEM IRQ GPIO descriptor using its hardware pin
596 * number and assign related IRQ number to the MODEM port.
597 * Keep the GPIO descriptor open so nobody steps in.
599 static void __init modem_assign_irq(struct gpio_chip *chip)
601 struct gpio_desc *gpiod;
603 gpiod = gpiochip_request_own_desc(chip, AMS_DELTA_GPIO_PIN_MODEM_IRQ,
606 pr_err("%s: modem IRQ GPIO request failed (%ld)\n", __func__,
609 gpiod_direction_input(gpiod);
610 ams_delta_modem_ports[0].irq = gpiod_to_irq(gpiod);
615 * The purpose of this function is to take care of proper initialization of
616 * devices and data structures which depend on GPIO lines provided by OMAP GPIO
617 * banks but their drivers don't use GPIO lookup tables or GPIO layer at all.
618 * The function may be called as soon as OMAP GPIO devices are probed.
619 * Since that happens at postcore_initcall, it can be called successfully
620 * from init_machine or later.
621 * Dependent devices may be registered from within this function or later.
623 static void __init omap_gpio_deps_init(void)
625 struct gpio_chip *chip;
627 chip = gpiochip_find(OMAP_GPIO_LABEL, gpiochip_match_by_label);
629 pr_err("%s: OMAP GPIO chip not found\n", __func__);
634 * Start with FIQ initialization as it may have to request
635 * and release successfully each OMAP GPIO pin in turn.
637 ams_delta_init_fiq(chip, &ams_delta_serio_device);
639 modem_assign_irq(chip);
643 * Initialize latch2 pins with values which are safe for dependent on-board
644 * devices or useful for their successull initialization even before GPIO
645 * driver takes control over the latch pins:
646 * - LATCH2_PIN_LCD_VBLEN = 0
647 * - LATCH2_PIN_LCD_NDISP = 0 Keep LCD device powered off before its
648 * driver takes control over it.
649 * - LATCH2_PIN_NAND_NCE = 0
650 * - LATCH2_PIN_NAND_NWP = 0 Keep NAND device down and write-
651 * protected before its driver takes
653 * - LATCH2_PIN_KEYBRD_PWR = 0 Keep keyboard powered off before serio
654 * driver takes control over it.
655 * - LATCH2_PIN_KEYBRD_DATAOUT = 0 Keep low to avoid corruption of first
656 * byte of data received from attached
657 * keyboard when serio device is probed;
658 * the pin is also hogged low by the latch2
659 * GPIO driver as soon as it is ready.
660 * - LATCH2_PIN_MODEM_NRESET = 1 Enable voice MODEM device, allowing for
661 * its successful probe even before a
662 * regulator it depends on, which in turn
663 * takes control over the pin, is set up.
664 * - LATCH2_PIN_MODEM_CODEC = 1 Attach voice MODEM CODEC data port
665 * to the MODEM so the CODEC is under
666 * control even if audio driver doesn't
669 static void __init ams_delta_latch2_init(void)
671 u16 latch2 = 1 << LATCH2_PIN_MODEM_NRESET | 1 << LATCH2_PIN_MODEM_CODEC;
673 __raw_writew(latch2, LATCH2_VIRT);
676 static void __init ams_delta_init(void)
678 /* mux pins for uarts */
679 omap_cfg_reg(UART1_TX);
680 omap_cfg_reg(UART1_RTS);
682 /* parallel camera interface */
683 omap_cfg_reg(H19_1610_CAM_EXCLK);
684 omap_cfg_reg(J15_1610_CAM_LCLK);
685 omap_cfg_reg(L18_1610_CAM_VS);
686 omap_cfg_reg(L15_1610_CAM_HS);
687 omap_cfg_reg(L19_1610_CAM_D0);
688 omap_cfg_reg(K14_1610_CAM_D1);
689 omap_cfg_reg(K15_1610_CAM_D2);
690 omap_cfg_reg(K19_1610_CAM_D3);
691 omap_cfg_reg(K18_1610_CAM_D4);
692 omap_cfg_reg(J14_1610_CAM_D5);
693 omap_cfg_reg(J19_1610_CAM_D6);
694 omap_cfg_reg(J18_1610_CAM_D7);
696 omap_gpio_deps_init();
697 ams_delta_latch2_init();
698 gpiod_add_hogs(ams_delta_gpio_hogs);
701 omap_register_i2c_bus(1, 100, NULL, 0);
703 omap1_usb_init(&ams_delta_usb_config);
704 omap1_set_camera_info(&ams_delta_camera_platform_data);
705 #ifdef CONFIG_LEDS_TRIGGERS
706 led_trigger_register_simple("ams_delta_camera",
707 &ams_delta_camera_led_trigger);
709 platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));
712 * As soon as regulator consumers have been registered, assign their
713 * dev_names to consumer supply entries of respective regulators.
715 keybrd_pwr_consumers[0].dev_name =
716 dev_name(&ams_delta_serio_device.dev);
719 * Once consumer supply entries are populated with dev_names,
720 * register regulator devices. At this stage only the keyboard
721 * power regulator has its consumer supply table fully populated.
723 platform_device_register(&keybrd_pwr_device);
726 * As soon as GPIO consumers have been registered, assign
727 * their dev_names to respective GPIO lookup tables.
729 ams_delta_audio_gpio_table.dev_id =
730 dev_name(&ams_delta_audio_device.dev);
731 keybrd_pwr_gpio_table.dev_id = dev_name(&keybrd_pwr_device.dev);
732 ams_delta_nand_gpio_table.dev_id = dev_name(&ams_delta_nand_device.dev);
733 ams_delta_lcd_gpio_table.dev_id = dev_name(&ams_delta_lcd_device.dev);
736 * Once GPIO lookup tables are populated with dev_names, register them.
738 gpiod_add_lookup_tables(ams_delta_gpio_tables,
739 ARRAY_SIZE(ams_delta_gpio_tables));
741 omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1);
743 omapfb_set_lcd_config(&ams_delta_lcd_config);
746 static void modem_pm(struct uart_port *port, unsigned int state, unsigned old)
748 struct modem_private_data *priv = port->private_data;
754 if (IS_ERR(priv->regulator))
761 ret = regulator_enable(priv->regulator);
763 ret = regulator_disable(priv->regulator);
769 "ams_delta modem_pm: failed to %sable regulator: %d\n",
770 state ? "dis" : "en", ret);
773 static struct plat_serial8250_port ams_delta_modem_ports[] = {
775 .membase = IOMEM(MODEM_VIRT),
776 .mapbase = MODEM_PHYS,
777 .irq = IRQ_NOTCONNECTED, /* changed later */
778 .flags = UPF_BOOT_AUTOCONF,
779 .irqflags = IRQF_TRIGGER_RISING,
782 .uartclk = BASE_BAUD * 16,
784 .private_data = &modem_priv,
789 static struct platform_device ams_delta_modem_device = {
790 .name = "serial8250",
791 .id = PLAT8250_DEV_PLATFORM1,
793 .platform_data = ams_delta_modem_ports,
798 * leds-gpio driver doesn't make use of GPIO lookup tables,
799 * it has to be provided with GPIO numbers over platform data
800 * if GPIO descriptor info can't be obtained from device tree.
801 * We could either define GPIO lookup tables and use them on behalf
802 * of the leds-gpio device, or we can use GPIO driver level methods
803 * for identification of GPIO numbers as long as we don't support
804 * device tree. Let's do the latter.
806 static void __init ams_delta_led_init(struct gpio_chip *chip)
808 struct gpio_desc *gpiod;
811 for (i = LATCH1_PIN_LED_CAMERA; i < LATCH1_PIN_DOCKIT1; i++) {
812 gpiod = gpiochip_request_own_desc(chip, i, NULL);
814 pr_warn("%s: %s GPIO %d request failed (%ld)\n",
815 __func__, LATCH1_LABEL, i, PTR_ERR(gpiod));
819 /* Assign GPIO numbers to LED device. */
820 gpio_leds[i].gpio = desc_to_gpio(gpiod);
822 gpiochip_free_own_desc(gpiod);
825 gpio_led_register_device(PLATFORM_DEVID_NONE, &leds_pdata);
829 * The purpose of this function is to take care of assignment of GPIO numbers
830 * to platform devices which depend on GPIO lines provided by Amstrad Delta
831 * latch1 and/or latch2 GPIO devices but don't use GPIO lookup tables.
832 * The function may be called as soon as latch1/latch2 GPIO devices are
833 * initilized. Since basic-mmio-gpio driver is not registered before
834 * device_initcall, this may happen at erliest during device_initcall_sync.
835 * Dependent devices shouldn't be registered before that, their
836 * registration may be performed from within this function or later.
838 static int __init ams_delta_gpio_init(void)
840 struct gpio_chip *chip;
842 if (!machine_is_ams_delta())
845 chip = gpiochip_find(LATCH1_LABEL, gpiochip_match_by_label);
847 pr_err("%s: latch1 GPIO chip not found\n", __func__);
849 ams_delta_led_init(chip);
853 device_initcall_sync(ams_delta_gpio_init);
855 static int __init modem_nreset_init(void)
859 err = platform_device_register(&modem_nreset_device);
861 pr_err("Couldn't register the modem regulator device\n");
868 * This function expects MODEM IRQ number already assigned to the port.
869 * The MODEM device requires its RESET# pin kept high during probe.
870 * That requirement can be fulfilled in several ways:
871 * - with a descriptor of already functional modem_nreset regulator
872 * assigned to the MODEM private data,
873 * - with the regulator not yet controlled by modem_pm function but
874 * already enabled by default on probe,
875 * - before the modem_nreset regulator is probed, with the pin already
876 * set high explicitly.
877 * The last one is already guaranteed by ams_delta_latch2_init() called
879 * In order to avoid taking over ttyS0 device slot, the MODEM device
880 * should be registered after OMAP serial ports. Since those ports
881 * are registered at arch_initcall, this function can be called safely
882 * at arch_initcall_sync earliest.
884 static int __init ams_delta_modem_init(void)
888 if (!machine_is_ams_delta())
891 omap_cfg_reg(M14_1510_GPIO2);
893 /* Initialize the modem_nreset regulator consumer before use */
894 modem_priv.regulator = ERR_PTR(-ENODEV);
896 err = platform_device_register(&ams_delta_modem_device);
900 arch_initcall_sync(ams_delta_modem_init);
902 static int __init late_init(void)
906 err = modem_nreset_init();
911 * Once the modem device is registered, the modem_nreset
912 * regulator can be requested on behalf of that device.
914 modem_priv.regulator = regulator_get(&ams_delta_modem_device.dev,
916 if (IS_ERR(modem_priv.regulator)) {
917 err = PTR_ERR(modem_priv.regulator);
923 platform_device_unregister(&ams_delta_modem_device);
927 static void __init ams_delta_init_late(void)
933 static void __init ams_delta_map_io(void)
936 iotable_init(ams_delta_io_desc, ARRAY_SIZE(ams_delta_io_desc));
939 MACHINE_START(AMS_DELTA, "Amstrad E3 (Delta)")
940 /* Maintainer: Jonathan McDowell <noodles@earth.li> */
941 .atag_offset = 0x100,
942 .map_io = ams_delta_map_io,
943 .init_early = omap1_init_early,
944 .init_irq = omap1_init_irq,
945 .handle_irq = omap1_handle_irq,
946 .init_machine = ams_delta_init,
947 .init_late = ams_delta_init_late,
948 .init_time = omap1_timer_init,
949 .restart = omap1_restart,