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/gpio.h> 15 #include <linux/kernel.h> 16 #include <linux/init.h> 17 #include <linux/input.h> 18 #include <linux/interrupt.h> 19 #include <linux/leds.h> 20 #include <linux/mtd/nand-gpio.h> 21 #include <linux/mtd/partitions.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> 29 #include <linux/io.h> 30 #include <linux/platform_data/gpio-omap.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 #include <mach/mux.h> 39 40 #include <mach/hardware.h> 41 #include <mach/usb.h> 42 43 #include "ams-delta-fiq.h" 44 #include "board-ams-delta.h" 45 #include "iomap.h" 46 #include "common.h" 47 48 static const unsigned int ams_delta_keymap[] = { 49 KEY(0, 0, KEY_F1), /* Advert */ 50 51 KEY(0, 3, KEY_COFFEE), /* Games */ 52 KEY(0, 2, KEY_QUESTION), /* Directory */ 53 KEY(2, 3, KEY_CONNECT), /* Internet */ 54 KEY(1, 2, KEY_SHOP), /* Services */ 55 KEY(1, 1, KEY_PHONE), /* VoiceMail */ 56 57 KEY(0, 1, KEY_DELETE), /* Delete */ 58 KEY(2, 2, KEY_PLAY), /* Play */ 59 KEY(1, 0, KEY_PAGEUP), /* Up */ 60 KEY(1, 3, KEY_PAGEDOWN), /* Down */ 61 KEY(2, 0, KEY_EMAIL), /* ReadEmail */ 62 KEY(2, 1, KEY_STOP), /* Stop */ 63 64 /* Numeric keypad portion */ 65 KEY(0, 7, KEY_KP1), 66 KEY(0, 6, KEY_KP2), 67 KEY(0, 5, KEY_KP3), 68 KEY(1, 7, KEY_KP4), 69 KEY(1, 6, KEY_KP5), 70 KEY(1, 5, KEY_KP6), 71 KEY(2, 7, KEY_KP7), 72 KEY(2, 6, KEY_KP8), 73 KEY(2, 5, KEY_KP9), 74 KEY(3, 6, KEY_KP0), 75 KEY(3, 7, KEY_KPASTERISK), 76 KEY(3, 5, KEY_KPDOT), /* # key */ 77 KEY(7, 2, KEY_NUMLOCK), /* Mute */ 78 KEY(7, 1, KEY_KPMINUS), /* Recall */ 79 KEY(6, 1, KEY_KPPLUS), /* Redial */ 80 KEY(7, 6, KEY_KPSLASH), /* Handsfree */ 81 KEY(6, 0, KEY_ENTER), /* Video */ 82 83 KEY(7, 4, KEY_CAMERA), /* Photo */ 84 85 KEY(0, 4, KEY_F2), /* Home */ 86 KEY(1, 4, KEY_F3), /* Office */ 87 KEY(2, 4, KEY_F4), /* Mobile */ 88 KEY(7, 7, KEY_F5), /* SMS */ 89 KEY(7, 5, KEY_F6), /* Email */ 90 91 /* QWERTY portion of keypad */ 92 KEY(3, 4, KEY_Q), 93 KEY(3, 3, KEY_W), 94 KEY(3, 2, KEY_E), 95 KEY(3, 1, KEY_R), 96 KEY(3, 0, KEY_T), 97 KEY(4, 7, KEY_Y), 98 KEY(4, 6, KEY_U), 99 KEY(4, 5, KEY_I), 100 KEY(4, 4, KEY_O), 101 KEY(4, 3, KEY_P), 102 103 KEY(4, 2, KEY_A), 104 KEY(4, 1, KEY_S), 105 KEY(4, 0, KEY_D), 106 KEY(5, 7, KEY_F), 107 KEY(5, 6, KEY_G), 108 KEY(5, 5, KEY_H), 109 KEY(5, 4, KEY_J), 110 KEY(5, 3, KEY_K), 111 KEY(5, 2, KEY_L), 112 113 KEY(5, 1, KEY_Z), 114 KEY(5, 0, KEY_X), 115 KEY(6, 7, KEY_C), 116 KEY(6, 6, KEY_V), 117 KEY(6, 5, KEY_B), 118 KEY(6, 4, KEY_N), 119 KEY(6, 3, KEY_M), 120 KEY(6, 2, KEY_SPACE), 121 122 KEY(7, 0, KEY_LEFTSHIFT), /* Vol up */ 123 KEY(7, 3, KEY_LEFTCTRL), /* Vol down */ 124 }; 125 126 #define LATCH1_PHYS 0x01000000 127 #define LATCH1_VIRT 0xEA000000 128 #define MODEM_PHYS 0x04000000 129 #define MODEM_VIRT 0xEB000000 130 #define LATCH2_PHYS 0x08000000 131 #define LATCH2_VIRT 0xEC000000 132 133 static struct map_desc ams_delta_io_desc[] __initdata = { 134 /* AMS_DELTA_LATCH1 */ 135 { 136 .virtual = LATCH1_VIRT, 137 .pfn = __phys_to_pfn(LATCH1_PHYS), 138 .length = 0x01000000, 139 .type = MT_DEVICE 140 }, 141 /* AMS_DELTA_LATCH2 */ 142 { 143 .virtual = LATCH2_VIRT, 144 .pfn = __phys_to_pfn(LATCH2_PHYS), 145 .length = 0x01000000, 146 .type = MT_DEVICE 147 }, 148 /* AMS_DELTA_MODEM */ 149 { 150 .virtual = MODEM_VIRT, 151 .pfn = __phys_to_pfn(MODEM_PHYS), 152 .length = 0x01000000, 153 .type = MT_DEVICE 154 } 155 }; 156 157 static const struct omap_lcd_config ams_delta_lcd_config __initconst = { 158 .ctrl_name = "internal", 159 }; 160 161 static struct omap_usb_config ams_delta_usb_config __initdata = { 162 .register_host = 1, 163 .hmc_mode = 16, 164 .pins[0] = 2, 165 }; 166 167 #define LATCH1_NGPIO 8 168 169 static struct resource latch1_resources[] = { 170 [0] = { 171 .name = "dat", 172 .start = LATCH1_PHYS, 173 .end = LATCH1_PHYS + (LATCH1_NGPIO - 1) / 8, 174 .flags = IORESOURCE_MEM, 175 }, 176 }; 177 178 #define LATCH1_LABEL "latch1" 179 180 static struct bgpio_pdata latch1_pdata = { 181 .label = LATCH1_LABEL, 182 .base = -1, 183 .ngpio = LATCH1_NGPIO, 184 }; 185 186 static struct platform_device latch1_gpio_device = { 187 .name = "basic-mmio-gpio", 188 .id = 0, 189 .resource = latch1_resources, 190 .num_resources = ARRAY_SIZE(latch1_resources), 191 .dev = { 192 .platform_data = &latch1_pdata, 193 }, 194 }; 195 196 #define LATCH1_PIN_LED_CAMERA 0 197 #define LATCH1_PIN_LED_ADVERT 1 198 #define LATCH1_PIN_LED_MAIL 2 199 #define LATCH1_PIN_LED_HANDSFREE 3 200 #define LATCH1_PIN_LED_VOICEMAIL 4 201 #define LATCH1_PIN_LED_VOICE 5 202 #define LATCH1_PIN_DOCKIT1 6 203 #define LATCH1_PIN_DOCKIT2 7 204 205 #define LATCH2_NGPIO 16 206 207 static struct resource latch2_resources[] = { 208 [0] = { 209 .name = "dat", 210 .start = LATCH2_PHYS, 211 .end = LATCH2_PHYS + (LATCH2_NGPIO - 1) / 8, 212 .flags = IORESOURCE_MEM, 213 }, 214 }; 215 216 #define LATCH2_LABEL "latch2" 217 218 static struct bgpio_pdata latch2_pdata = { 219 .label = LATCH2_LABEL, 220 .base = -1, 221 .ngpio = LATCH2_NGPIO, 222 }; 223 224 static struct platform_device latch2_gpio_device = { 225 .name = "basic-mmio-gpio", 226 .id = 1, 227 .resource = latch2_resources, 228 .num_resources = ARRAY_SIZE(latch2_resources), 229 .dev = { 230 .platform_data = &latch2_pdata, 231 }, 232 }; 233 234 #define LATCH2_PIN_LCD_VBLEN 0 235 #define LATCH2_PIN_LCD_NDISP 1 236 #define LATCH2_PIN_NAND_NCE 2 237 #define LATCH2_PIN_NAND_NRE 3 238 #define LATCH2_PIN_NAND_NWP 4 239 #define LATCH2_PIN_NAND_NWE 5 240 #define LATCH2_PIN_NAND_ALE 6 241 #define LATCH2_PIN_NAND_CLE 7 242 #define LATCH2_PIN_KEYBRD_PWR 8 243 #define LATCH2_PIN_KEYBRD_DATAOUT 9 244 #define LATCH2_PIN_SCARD_RSTIN 10 245 #define LATCH2_PIN_SCARD_CMDVCC 11 246 #define LATCH2_PIN_MODEM_NRESET 12 247 #define LATCH2_PIN_MODEM_CODEC 13 248 #define LATCH2_PIN_HANDSFREE_MUTE 14 249 #define LATCH2_PIN_HANDSET_MUTE 15 250 251 static struct regulator_consumer_supply modem_nreset_consumers[] = { 252 REGULATOR_SUPPLY("RESET#", "serial8250.1"), 253 REGULATOR_SUPPLY("POR", "cx20442-codec"), 254 }; 255 256 static struct regulator_init_data modem_nreset_data = { 257 .constraints = { 258 .valid_ops_mask = REGULATOR_CHANGE_STATUS, 259 .boot_on = 1, 260 }, 261 .num_consumer_supplies = ARRAY_SIZE(modem_nreset_consumers), 262 .consumer_supplies = modem_nreset_consumers, 263 }; 264 265 static struct fixed_voltage_config modem_nreset_config = { 266 .supply_name = "modem_nreset", 267 .microvolts = 3300000, 268 .startup_delay = 25000, 269 .enabled_at_boot = 1, 270 .init_data = &modem_nreset_data, 271 }; 272 273 static struct platform_device modem_nreset_device = { 274 .name = "reg-fixed-voltage", 275 .id = -1, 276 .dev = { 277 .platform_data = &modem_nreset_config, 278 }, 279 }; 280 281 static struct gpiod_lookup_table ams_delta_nreset_gpiod_table = { 282 .dev_id = "reg-fixed-voltage", 283 .table = { 284 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_NRESET, 285 NULL, GPIO_ACTIVE_HIGH), 286 { }, 287 }, 288 }; 289 290 struct modem_private_data { 291 struct regulator *regulator; 292 }; 293 294 static struct modem_private_data modem_priv; 295 296 /* 297 * Define partitions for flash device 298 */ 299 300 static struct mtd_partition partition_info[] = { 301 { .name = "Kernel", 302 .offset = 0, 303 .size = 3 * SZ_1M + SZ_512K }, 304 { .name = "u-boot", 305 .offset = 3 * SZ_1M + SZ_512K, 306 .size = SZ_256K }, 307 { .name = "u-boot params", 308 .offset = 3 * SZ_1M + SZ_512K + SZ_256K, 309 .size = SZ_256K }, 310 { .name = "Amstrad LDR", 311 .offset = 4 * SZ_1M, 312 .size = SZ_256K }, 313 { .name = "File system", 314 .offset = 4 * SZ_1M + 1 * SZ_256K, 315 .size = 27 * SZ_1M }, 316 { .name = "PBL reserved", 317 .offset = 32 * SZ_1M - 3 * SZ_256K, 318 .size = 3 * SZ_256K }, 319 }; 320 321 static struct gpio_nand_platdata nand_platdata = { 322 .parts = partition_info, 323 .num_parts = ARRAY_SIZE(partition_info), 324 }; 325 326 static struct platform_device ams_delta_nand_device = { 327 .name = "ams-delta-nand", 328 .id = -1, 329 .dev = { 330 .platform_data = &nand_platdata, 331 }, 332 }; 333 334 #define OMAP_GPIO_LABEL "gpio-0-15" 335 #define OMAP_MPUIO_LABEL "mpuio" 336 337 static struct gpiod_lookup_table ams_delta_nand_gpio_table = { 338 .table = { 339 GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_NAND_RB, "rdy", 340 0), 341 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NCE, "nce", 342 GPIO_ACTIVE_LOW), 343 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NRE, "nre", 344 GPIO_ACTIVE_LOW), 345 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWP, "nwp", 346 GPIO_ACTIVE_LOW), 347 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWE, "nwe", 348 GPIO_ACTIVE_LOW), 349 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_ALE, "ale", 0), 350 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_CLE, "cle", 0), 351 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 0, "data", 0, 0), 352 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 1, "data", 1, 0), 353 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 2, "data", 2, 0), 354 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 3, "data", 3, 0), 355 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 4, "data", 4, 0), 356 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 5, "data", 5, 0), 357 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 6, "data", 6, 0), 358 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 7, "data", 7, 0), 359 { }, 360 }, 361 }; 362 363 static struct resource ams_delta_kp_resources[] = { 364 [0] = { 365 .start = INT_KEYBOARD, 366 .end = INT_KEYBOARD, 367 .flags = IORESOURCE_IRQ, 368 }, 369 }; 370 371 static const struct matrix_keymap_data ams_delta_keymap_data = { 372 .keymap = ams_delta_keymap, 373 .keymap_size = ARRAY_SIZE(ams_delta_keymap), 374 }; 375 376 static struct omap_kp_platform_data ams_delta_kp_data = { 377 .rows = 8, 378 .cols = 8, 379 .keymap_data = &ams_delta_keymap_data, 380 .delay = 9, 381 }; 382 383 static struct platform_device ams_delta_kp_device = { 384 .name = "omap-keypad", 385 .id = -1, 386 .dev = { 387 .platform_data = &ams_delta_kp_data, 388 }, 389 .num_resources = ARRAY_SIZE(ams_delta_kp_resources), 390 .resource = ams_delta_kp_resources, 391 }; 392 393 static struct platform_device ams_delta_lcd_device = { 394 .name = "lcd_ams_delta", 395 .id = -1, 396 }; 397 398 static struct gpiod_lookup_table ams_delta_lcd_gpio_table = { 399 .table = { 400 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_VBLEN, "vblen", 0), 401 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_NDISP, "ndisp", 0), 402 { }, 403 }, 404 }; 405 406 static struct gpio_led gpio_leds[] __initdata = { 407 [LATCH1_PIN_LED_CAMERA] = { 408 .name = "camera", 409 .default_state = LEDS_GPIO_DEFSTATE_OFF, 410 #ifdef CONFIG_LEDS_TRIGGERS 411 .default_trigger = "ams_delta_camera", 412 #endif 413 }, 414 [LATCH1_PIN_LED_ADVERT] = { 415 .name = "advert", 416 .default_state = LEDS_GPIO_DEFSTATE_OFF, 417 }, 418 [LATCH1_PIN_LED_MAIL] = { 419 .name = "email", 420 .default_state = LEDS_GPIO_DEFSTATE_OFF, 421 }, 422 [LATCH1_PIN_LED_HANDSFREE] = { 423 .name = "handsfree", 424 .default_state = LEDS_GPIO_DEFSTATE_OFF, 425 }, 426 [LATCH1_PIN_LED_VOICEMAIL] = { 427 .name = "voicemail", 428 .default_state = LEDS_GPIO_DEFSTATE_OFF, 429 }, 430 [LATCH1_PIN_LED_VOICE] = { 431 .name = "voice", 432 .default_state = LEDS_GPIO_DEFSTATE_OFF, 433 }, 434 }; 435 436 static const struct gpio_led_platform_data leds_pdata __initconst = { 437 .leds = gpio_leds, 438 .num_leds = ARRAY_SIZE(gpio_leds), 439 }; 440 441 static struct gpiod_lookup_table leds_gpio_table = { 442 .table = { 443 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_CAMERA, NULL, 444 LATCH1_PIN_LED_CAMERA, 0), 445 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_ADVERT, NULL, 446 LATCH1_PIN_LED_ADVERT, 0), 447 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_MAIL, NULL, 448 LATCH1_PIN_LED_MAIL, 0), 449 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_HANDSFREE, NULL, 450 LATCH1_PIN_LED_HANDSFREE, 0), 451 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICEMAIL, NULL, 452 LATCH1_PIN_LED_VOICEMAIL, 0), 453 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICE, NULL, 454 LATCH1_PIN_LED_VOICE, 0), 455 { }, 456 }, 457 }; 458 459 #ifdef CONFIG_LEDS_TRIGGERS 460 DEFINE_LED_TRIGGER(ams_delta_camera_led_trigger); 461 #endif 462 463 static struct platform_device ams_delta_audio_device = { 464 .name = "ams-delta-audio", 465 .id = -1, 466 }; 467 468 static struct gpiod_lookup_table ams_delta_audio_gpio_table = { 469 .table = { 470 GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_HOOK_SWITCH, 471 "hook_switch", 0), 472 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_CODEC, 473 "modem_codec", 0), 474 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSFREE_MUTE, 475 "handsfree_mute", 0), 476 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSET_MUTE, 477 "handset_mute", 0), 478 { }, 479 }, 480 }; 481 482 static struct platform_device cx20442_codec_device = { 483 .name = "cx20442-codec", 484 .id = -1, 485 }; 486 487 static struct resource ams_delta_serio_resources[] = { 488 { 489 .flags = IORESOURCE_IRQ, 490 /* 491 * Initialize IRQ resource with invalid IRQ number. 492 * It will be replaced with dynamically allocated GPIO IRQ 493 * obtained from GPIO chip as soon as the chip is available. 494 */ 495 .start = -EINVAL, 496 .end = -EINVAL, 497 }, 498 }; 499 500 static struct platform_device ams_delta_serio_device = { 501 .name = "ams-delta-serio", 502 .id = PLATFORM_DEVID_NONE, 503 .dev = { 504 /* 505 * Initialize .platform_data explicitly with NULL to 506 * indicate it is going to be used. It will be replaced 507 * with FIQ buffer address as soon as FIQ is initialized. 508 */ 509 .platform_data = NULL, 510 }, 511 .num_resources = ARRAY_SIZE(ams_delta_serio_resources), 512 .resource = ams_delta_serio_resources, 513 }; 514 515 static struct regulator_consumer_supply keybrd_pwr_consumers[] = { 516 /* 517 * Initialize supply .dev_name with NULL. It will be replaced 518 * with serio dev_name() as soon as the serio device is registered. 519 */ 520 REGULATOR_SUPPLY("vcc", NULL), 521 }; 522 523 static struct regulator_init_data keybrd_pwr_initdata = { 524 .constraints = { 525 .valid_ops_mask = REGULATOR_CHANGE_STATUS, 526 }, 527 .num_consumer_supplies = ARRAY_SIZE(keybrd_pwr_consumers), 528 .consumer_supplies = keybrd_pwr_consumers, 529 }; 530 531 static struct fixed_voltage_config keybrd_pwr_config = { 532 .supply_name = "keybrd_pwr", 533 .microvolts = 5000000, 534 .init_data = &keybrd_pwr_initdata, 535 }; 536 537 static struct platform_device keybrd_pwr_device = { 538 .name = "reg-fixed-voltage", 539 .id = PLATFORM_DEVID_AUTO, 540 .dev = { 541 .platform_data = &keybrd_pwr_config, 542 }, 543 }; 544 545 static struct gpiod_lookup_table keybrd_pwr_gpio_table = { 546 .table = { 547 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_KEYBRD_PWR, NULL, 548 GPIO_ACTIVE_HIGH), 549 { }, 550 }, 551 }; 552 553 static struct platform_device *ams_delta_devices[] __initdata = { 554 &latch1_gpio_device, 555 &latch2_gpio_device, 556 &ams_delta_kp_device, 557 &ams_delta_audio_device, 558 &ams_delta_serio_device, 559 &ams_delta_nand_device, 560 &ams_delta_lcd_device, 561 &cx20442_codec_device, 562 }; 563 564 static struct gpiod_lookup_table *ams_delta_gpio_tables[] __initdata = { 565 &ams_delta_nreset_gpiod_table, 566 &ams_delta_audio_gpio_table, 567 &keybrd_pwr_gpio_table, 568 &ams_delta_lcd_gpio_table, 569 &ams_delta_nand_gpio_table, 570 }; 571 572 /* 573 * Some drivers may not use GPIO lookup tables but need to be provided 574 * with GPIO numbers. The same applies to GPIO based IRQ lines - some 575 * drivers may even not use GPIO layer but expect just IRQ numbers. 576 * We could either define GPIO lookup tables then use them on behalf 577 * of those devices, or we can use GPIO driver level methods for 578 * identification of GPIO and IRQ numbers. For the purpose of the latter, 579 * defina a helper function which identifies GPIO chips by their labels. 580 */ 581 static int gpiochip_match_by_label(struct gpio_chip *chip, void *data) 582 { 583 char *label = data; 584 585 return !strcmp(label, chip->label); 586 } 587 588 static struct gpiod_hog ams_delta_gpio_hogs[] = { 589 GPIO_HOG(LATCH2_LABEL, LATCH2_PIN_KEYBRD_DATAOUT, "keybrd_dataout", 590 GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW), 591 {}, 592 }; 593 594 static struct plat_serial8250_port ams_delta_modem_ports[]; 595 596 /* 597 * Obtain MODEM IRQ GPIO descriptor using its hardware pin 598 * number and assign related IRQ number to the MODEM port. 599 * Keep the GPIO descriptor open so nobody steps in. 600 */ 601 static void __init modem_assign_irq(struct gpio_chip *chip) 602 { 603 struct gpio_desc *gpiod; 604 605 gpiod = gpiochip_request_own_desc(chip, AMS_DELTA_GPIO_PIN_MODEM_IRQ, 606 "modem_irq", GPIO_ACTIVE_HIGH, 607 GPIOD_IN); 608 if (IS_ERR(gpiod)) { 609 pr_err("%s: modem IRQ GPIO request failed (%ld)\n", __func__, 610 PTR_ERR(gpiod)); 611 } else { 612 ams_delta_modem_ports[0].irq = gpiod_to_irq(gpiod); 613 } 614 } 615 616 /* 617 * The purpose of this function is to take care of proper initialization of 618 * devices and data structures which depend on GPIO lines provided by OMAP GPIO 619 * banks but their drivers don't use GPIO lookup tables or GPIO layer at all. 620 * The function may be called as soon as OMAP GPIO devices are probed. 621 * Since that happens at postcore_initcall, it can be called successfully 622 * from init_machine or later. 623 * Dependent devices may be registered from within this function or later. 624 */ 625 static void __init omap_gpio_deps_init(void) 626 { 627 struct gpio_chip *chip; 628 629 chip = gpiochip_find(OMAP_GPIO_LABEL, gpiochip_match_by_label); 630 if (!chip) { 631 pr_err("%s: OMAP GPIO chip not found\n", __func__); 632 return; 633 } 634 635 /* 636 * Start with FIQ initialization as it may have to request 637 * and release successfully each OMAP GPIO pin in turn. 638 */ 639 ams_delta_init_fiq(chip, &ams_delta_serio_device); 640 641 modem_assign_irq(chip); 642 } 643 644 /* 645 * Initialize latch2 pins with values which are safe for dependent on-board 646 * devices or useful for their successull initialization even before GPIO 647 * driver takes control over the latch pins: 648 * - LATCH2_PIN_LCD_VBLEN = 0 649 * - LATCH2_PIN_LCD_NDISP = 0 Keep LCD device powered off before its 650 * driver takes control over it. 651 * - LATCH2_PIN_NAND_NCE = 0 652 * - LATCH2_PIN_NAND_NWP = 0 Keep NAND device down and write- 653 * protected before its driver takes 654 * control over it. 655 * - LATCH2_PIN_KEYBRD_PWR = 0 Keep keyboard powered off before serio 656 * driver takes control over it. 657 * - LATCH2_PIN_KEYBRD_DATAOUT = 0 Keep low to avoid corruption of first 658 * byte of data received from attached 659 * keyboard when serio device is probed; 660 * the pin is also hogged low by the latch2 661 * GPIO driver as soon as it is ready. 662 * - LATCH2_PIN_MODEM_NRESET = 1 Enable voice MODEM device, allowing for 663 * its successful probe even before a 664 * regulator it depends on, which in turn 665 * takes control over the pin, is set up. 666 * - LATCH2_PIN_MODEM_CODEC = 1 Attach voice MODEM CODEC data port 667 * to the MODEM so the CODEC is under 668 * control even if audio driver doesn't 669 * take it over. 670 */ 671 static void __init ams_delta_latch2_init(void) 672 { 673 u16 latch2 = 1 << LATCH2_PIN_MODEM_NRESET | 1 << LATCH2_PIN_MODEM_CODEC; 674 675 __raw_writew(latch2, LATCH2_VIRT); 676 } 677 678 static void __init ams_delta_init(void) 679 { 680 struct platform_device *leds_pdev; 681 682 /* mux pins for uarts */ 683 omap_cfg_reg(UART1_TX); 684 omap_cfg_reg(UART1_RTS); 685 686 /* parallel camera interface */ 687 omap_cfg_reg(H19_1610_CAM_EXCLK); 688 omap_cfg_reg(J15_1610_CAM_LCLK); 689 omap_cfg_reg(L18_1610_CAM_VS); 690 omap_cfg_reg(L15_1610_CAM_HS); 691 omap_cfg_reg(L19_1610_CAM_D0); 692 omap_cfg_reg(K14_1610_CAM_D1); 693 omap_cfg_reg(K15_1610_CAM_D2); 694 omap_cfg_reg(K19_1610_CAM_D3); 695 omap_cfg_reg(K18_1610_CAM_D4); 696 omap_cfg_reg(J14_1610_CAM_D5); 697 omap_cfg_reg(J19_1610_CAM_D6); 698 omap_cfg_reg(J18_1610_CAM_D7); 699 700 omap_gpio_deps_init(); 701 ams_delta_latch2_init(); 702 gpiod_add_hogs(ams_delta_gpio_hogs); 703 704 omap_serial_init(); 705 omap_register_i2c_bus(1, 100, NULL, 0); 706 707 omap1_usb_init(&ams_delta_usb_config); 708 #ifdef CONFIG_LEDS_TRIGGERS 709 led_trigger_register_simple("ams_delta_camera", 710 &ams_delta_camera_led_trigger); 711 #endif 712 platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices)); 713 714 /* 715 * As soon as regulator consumers have been registered, assign their 716 * dev_names to consumer supply entries of respective regulators. 717 */ 718 keybrd_pwr_consumers[0].dev_name = 719 dev_name(&ams_delta_serio_device.dev); 720 721 /* 722 * Once consumer supply entries are populated with dev_names, 723 * register regulator devices. At this stage only the keyboard 724 * power regulator has its consumer supply table fully populated. 725 */ 726 platform_device_register(&keybrd_pwr_device); 727 728 /* 729 * As soon as GPIO consumers have been registered, assign 730 * their dev_names to respective GPIO lookup tables. 731 */ 732 ams_delta_audio_gpio_table.dev_id = 733 dev_name(&ams_delta_audio_device.dev); 734 keybrd_pwr_gpio_table.dev_id = dev_name(&keybrd_pwr_device.dev); 735 ams_delta_nand_gpio_table.dev_id = dev_name(&ams_delta_nand_device.dev); 736 ams_delta_lcd_gpio_table.dev_id = dev_name(&ams_delta_lcd_device.dev); 737 738 /* 739 * Once GPIO lookup tables are populated with dev_names, register them. 740 */ 741 gpiod_add_lookup_tables(ams_delta_gpio_tables, 742 ARRAY_SIZE(ams_delta_gpio_tables)); 743 744 leds_pdev = gpio_led_register_device(PLATFORM_DEVID_NONE, &leds_pdata); 745 if (!IS_ERR_OR_NULL(leds_pdev)) { 746 leds_gpio_table.dev_id = dev_name(&leds_pdev->dev); 747 gpiod_add_lookup_table(&leds_gpio_table); 748 } 749 750 omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1); 751 752 omapfb_set_lcd_config(&ams_delta_lcd_config); 753 } 754 755 static void modem_pm(struct uart_port *port, unsigned int state, unsigned old) 756 { 757 struct modem_private_data *priv = port->private_data; 758 int ret; 759 760 if (!priv) 761 return; 762 763 if (IS_ERR(priv->regulator)) 764 return; 765 766 if (state == old) 767 return; 768 769 if (state == 0) 770 ret = regulator_enable(priv->regulator); 771 else if (old == 0) 772 ret = regulator_disable(priv->regulator); 773 else 774 ret = 0; 775 776 if (ret) 777 dev_warn(port->dev, 778 "ams_delta modem_pm: failed to %sable regulator: %d\n", 779 state ? "dis" : "en", ret); 780 } 781 782 static struct plat_serial8250_port ams_delta_modem_ports[] = { 783 { 784 .membase = IOMEM(MODEM_VIRT), 785 .mapbase = MODEM_PHYS, 786 .irq = IRQ_NOTCONNECTED, /* changed later */ 787 .flags = UPF_BOOT_AUTOCONF, 788 .irqflags = IRQF_TRIGGER_RISING, 789 .iotype = UPIO_MEM, 790 .regshift = 1, 791 .uartclk = BASE_BAUD * 16, 792 .pm = modem_pm, 793 .private_data = &modem_priv, 794 }, 795 { }, 796 }; 797 798 static struct platform_device ams_delta_modem_device = { 799 .name = "serial8250", 800 .id = PLAT8250_DEV_PLATFORM1, 801 .dev = { 802 .platform_data = ams_delta_modem_ports, 803 }, 804 }; 805 806 static int __init modem_nreset_init(void) 807 { 808 int err; 809 810 err = platform_device_register(&modem_nreset_device); 811 if (err) 812 pr_err("Couldn't register the modem regulator device\n"); 813 814 return err; 815 } 816 817 818 /* 819 * This function expects MODEM IRQ number already assigned to the port. 820 * The MODEM device requires its RESET# pin kept high during probe. 821 * That requirement can be fulfilled in several ways: 822 * - with a descriptor of already functional modem_nreset regulator 823 * assigned to the MODEM private data, 824 * - with the regulator not yet controlled by modem_pm function but 825 * already enabled by default on probe, 826 * - before the modem_nreset regulator is probed, with the pin already 827 * set high explicitly. 828 * The last one is already guaranteed by ams_delta_latch2_init() called 829 * from machine_init. 830 * In order to avoid taking over ttyS0 device slot, the MODEM device 831 * should be registered after OMAP serial ports. Since those ports 832 * are registered at arch_initcall, this function can be called safely 833 * at arch_initcall_sync earliest. 834 */ 835 static int __init ams_delta_modem_init(void) 836 { 837 int err; 838 839 if (!machine_is_ams_delta()) 840 return -ENODEV; 841 842 omap_cfg_reg(M14_1510_GPIO2); 843 844 /* Initialize the modem_nreset regulator consumer before use */ 845 modem_priv.regulator = ERR_PTR(-ENODEV); 846 847 err = platform_device_register(&ams_delta_modem_device); 848 849 return err; 850 } 851 arch_initcall_sync(ams_delta_modem_init); 852 853 static int __init late_init(void) 854 { 855 int err; 856 857 err = modem_nreset_init(); 858 if (err) 859 return err; 860 861 /* 862 * Once the modem device is registered, the modem_nreset 863 * regulator can be requested on behalf of that device. 864 */ 865 modem_priv.regulator = regulator_get(&ams_delta_modem_device.dev, 866 "RESET#"); 867 if (IS_ERR(modem_priv.regulator)) { 868 err = PTR_ERR(modem_priv.regulator); 869 goto unregister; 870 } 871 return 0; 872 873 unregister: 874 platform_device_unregister(&ams_delta_modem_device); 875 return err; 876 } 877 878 static void __init ams_delta_init_late(void) 879 { 880 omap1_init_late(); 881 late_init(); 882 } 883 884 static void __init ams_delta_map_io(void) 885 { 886 omap15xx_map_io(); 887 iotable_init(ams_delta_io_desc, ARRAY_SIZE(ams_delta_io_desc)); 888 } 889 890 MACHINE_START(AMS_DELTA, "Amstrad E3 (Delta)") 891 /* Maintainer: Jonathan McDowell <noodles@earth.li> */ 892 .atag_offset = 0x100, 893 .map_io = ams_delta_map_io, 894 .init_early = omap1_init_early, 895 .init_irq = omap1_init_irq, 896 .handle_irq = omap1_handle_irq, 897 .init_machine = ams_delta_init, 898 .init_late = ams_delta_init_late, 899 .init_time = omap1_timer_init, 900 .restart = omap1_restart, 901 MACHINE_END 902