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 46 static 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 130 131 static 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 }; 154 155 static const struct omap_lcd_config ams_delta_lcd_config __initconst = { 156 .ctrl_name = "internal", 157 }; 158 159 static 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 8 166 167 static 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" 177 178 static struct bgpio_pdata latch1_pdata = { 179 .label = LATCH1_LABEL, 180 .base = -1, 181 .ngpio = LATCH1_NGPIO, 182 }; 183 184 static 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 16 204 205 static 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" 215 216 static struct bgpio_pdata latch2_pdata = { 217 .label = LATCH2_LABEL, 218 .base = -1, 219 .ngpio = LATCH2_NGPIO, 220 }; 221 222 static 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 15 248 249 static struct regulator_consumer_supply modem_nreset_consumers[] = { 250 REGULATOR_SUPPLY("RESET#", "serial8250.1"), 251 REGULATOR_SUPPLY("POR", "cx20442-codec"), 252 }; 253 254 static 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 }; 262 263 static 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 }; 270 271 static struct platform_device modem_nreset_device = { 272 .name = "reg-fixed-voltage", 273 .id = -1, 274 .dev = { 275 .platform_data = &modem_nreset_config, 276 }, 277 }; 278 279 static 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 }; 287 288 struct modem_private_data { 289 struct regulator *regulator; 290 }; 291 292 static struct modem_private_data modem_priv; 293 294 /* 295 * Define partitions for flash device 296 */ 297 298 static 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 }; 318 319 static struct gpio_nand_platdata nand_platdata = { 320 .parts = partition_info, 321 .num_parts = ARRAY_SIZE(partition_info), 322 }; 323 324 static 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" 334 335 static 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 }; 360 361 static struct resource ams_delta_kp_resources[] = { 362 [0] = { 363 .start = INT_KEYBOARD, 364 .end = INT_KEYBOARD, 365 .flags = IORESOURCE_IRQ, 366 }, 367 }; 368 369 static const struct matrix_keymap_data ams_delta_keymap_data = { 370 .keymap = ams_delta_keymap, 371 .keymap_size = ARRAY_SIZE(ams_delta_keymap), 372 }; 373 374 static 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 }; 380 381 static 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 }; 390 391 static struct platform_device ams_delta_lcd_device = { 392 .name = "lcd_ams_delta", 393 .id = -1, 394 }; 395 396 static 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 }; 403 404 static 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 }; 430 431 static const struct gpio_led_platform_data leds_pdata __initconst = { 432 .leds = gpio_leds, 433 .num_leds = ARRAY_SIZE(gpio_leds), 434 }; 435 436 static 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 }; 453 454 static struct platform_device ams_delta_audio_device = { 455 .name = "ams-delta-audio", 456 .id = -1, 457 }; 458 459 static 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 }; 472 473 static struct platform_device cx20442_codec_device = { 474 .name = "cx20442-codec", 475 .id = -1, 476 }; 477 478 static 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 }; 490 491 static 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 }; 505 506 static 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 }; 513 514 static 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 }; 521 522 static struct fixed_voltage_config keybrd_pwr_config = { 523 .supply_name = "keybrd_pwr", 524 .microvolts = 5000000, 525 .init_data = &keybrd_pwr_initdata, 526 }; 527 528 static 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 }; 535 536 static 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 }; 543 544 static 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 }; 555 556 static 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 }; 563 564 static 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 }; 569 570 static 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 */ 577 static 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 */ 601 static 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 */ 661 static 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 } 667 668 static 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 } 740 741 static 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 } 767 768 static 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 }; 783 784 static 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 } 792 793 static struct dev_pm_domain ams_delta_modem_pm_domain = { 794 .activate = ams_delta_modem_pm_activate, 795 }; 796 797 static 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 */ 823 static 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 } 835 arch_initcall_sync(ams_delta_modem_init); 836 837 static 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 } 842 843 MACHINE_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, 853 MACHINE_END 854