arch/arm/mach-omap1/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/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 /*
 565  * Some drivers may not use GPIO lookup tables but need to be provided
 566  * with GPIO numbers.  The same applies to GPIO based IRQ lines - some
 567  * drivers may even not use GPIO layer but expect just IRQ numbers.
 568  * We could either define GPIO lookup tables then use them on behalf
 569  * of those devices, or we can use GPIO driver level methods for
 570  * identification of GPIO and IRQ numbers. For the purpose of the latter,
 571  * defina a helper function which identifies GPIO chips by their labels.
 572  */
 573 static int gpiochip_match_by_label(struct gpio_chip *chip, void *data)
 574 {
 575         char *label = data;
 576
 577         return !strcmp(label, chip->label);
 578 }
 579
 580 static struct gpiod_hog ams_delta_gpio_hogs[] = {
 581         GPIO_HOG(LATCH2_LABEL, LATCH2_PIN_KEYBRD_DATAOUT, "keybrd_dataout",
 582                  GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW),
 583         {},
 584 };
 585
 586 static struct plat_serial8250_port ams_delta_modem_ports[];
 587
 588 /*
 589  * Obtain MODEM IRQ GPIO descriptor using its hardware pin
 590  * number and assign related IRQ number to the MODEM port.
 591  * Keep the GPIO descriptor open so nobody steps in.
 592  */
 593 static void __init modem_assign_irq(struct gpio_chip *chip)
 594 {
 595         struct gpio_desc *gpiod;
 596
 597         gpiod = gpiochip_request_own_desc(chip, AMS_DELTA_GPIO_PIN_MODEM_IRQ,
 598                                           "modem_irq", GPIO_ACTIVE_HIGH,
 599                                           GPIOD_IN);
 600         if (IS_ERR(gpiod)) {
 601                 pr_err("%s: modem IRQ GPIO request failed (%ld)\n", __func__,
 602                        PTR_ERR(gpiod));
 603         } else {
 604                 ams_delta_modem_ports[0].irq = gpiod_to_irq(gpiod);
 605         }
 606 }
 607
 608 /*
 609  * The purpose of this function is to take care of proper initialization of
 610  * devices and data structures which depend on GPIO lines provided by OMAP GPIO
 611  * banks but their drivers don't use GPIO lookup tables or GPIO layer at all.
 612  * The function may be called as soon as OMAP GPIO devices are probed.
 613  * Since that happens at postcore_initcall, it can be called successfully
 614  * from init_machine or later.
 615  * Dependent devices may be registered from within this function or later.
 616  */
 617 static void __init omap_gpio_deps_init(void)
 618 {
 619         struct gpio_chip *chip;
 620
 621         chip = gpiochip_find(OMAP_GPIO_LABEL, gpiochip_match_by_label);
 622         if (!chip) {
 623                 pr_err("%s: OMAP GPIO chip not found\n", __func__);
 624                 return;
 625         }
 626
 627         /*
 628          * Start with FIQ initialization as it may have to request
 629          * and release successfully each OMAP GPIO pin in turn.
 630          */
 631         ams_delta_init_fiq(chip, &ams_delta_serio_device);
 632
 633         modem_assign_irq(chip);
 634 }
 635
 636 /*
 637  * Initialize latch2 pins with values which are safe for dependent on-board
 638  * devices or useful for their successull initialization even before GPIO
 639  * driver takes control over the latch pins:
 640  * - LATCH2_PIN_LCD_VBLEN       = 0
 641  * - LATCH2_PIN_LCD_NDISP       = 0     Keep LCD device powered off before its
 642  *                                      driver takes control over it.
 643  * - LATCH2_PIN_NAND_NCE        = 0
 644  * - LATCH2_PIN_NAND_NWP        = 0     Keep NAND device down and write-
 645  *                                      protected before its driver takes
 646  *                                      control over it.
 647  * - LATCH2_PIN_KEYBRD_PWR      = 0     Keep keyboard powered off before serio
 648  *                                      driver takes control over it.
 649  * - LATCH2_PIN_KEYBRD_DATAOUT  = 0     Keep low to avoid corruption of first
 650  *                                      byte of data received from attached
 651  *                                      keyboard when serio device is probed;
 652  *                                      the pin is also hogged low by the latch2
 653  *                                      GPIO driver as soon as it is ready.
 654  * - LATCH2_PIN_MODEM_NRESET    = 1     Enable voice MODEM device, allowing for
 655  *                                      its successful probe even before a
 656  *                                      regulator it depends on, which in turn
 657  *                                      takes control over the pin, is set up.
 658  * - LATCH2_PIN_MODEM_CODEC     = 1     Attach voice MODEM CODEC data port
 659  *                                      to the MODEM so the CODEC is under
 660  *                                      control even if audio driver doesn't
 661  *                                      take it over.
 662  */
 663 static void __init ams_delta_latch2_init(void)
 664 {
 665         u16 latch2 = 1 << LATCH2_PIN_MODEM_NRESET | 1 << LATCH2_PIN_MODEM_CODEC;
 666
 667         __raw_writew(latch2, IOMEM(LATCH2_VIRT));
 668 }
 669
 670 static void __init ams_delta_init(void)
 671 {
 672         struct platform_device *leds_pdev;
 673
 674         /* mux pins for uarts */
 675         omap_cfg_reg(UART1_TX);
 676         omap_cfg_reg(UART1_RTS);
 677
 678         /* parallel camera interface */
 679         omap_cfg_reg(H19_1610_CAM_EXCLK);
 680         omap_cfg_reg(J15_1610_CAM_LCLK);
 681         omap_cfg_reg(L18_1610_CAM_VS);
 682         omap_cfg_reg(L15_1610_CAM_HS);
 683         omap_cfg_reg(L19_1610_CAM_D0);
 684         omap_cfg_reg(K14_1610_CAM_D1);
 685         omap_cfg_reg(K15_1610_CAM_D2);
 686         omap_cfg_reg(K19_1610_CAM_D3);
 687         omap_cfg_reg(K18_1610_CAM_D4);
 688         omap_cfg_reg(J14_1610_CAM_D5);
 689         omap_cfg_reg(J19_1610_CAM_D6);
 690         omap_cfg_reg(J18_1610_CAM_D7);
 691
 692         omap_gpio_deps_init();
 693         ams_delta_latch2_init();
 694         gpiod_add_hogs(ams_delta_gpio_hogs);
 695
 696         omap_serial_init();
 697         omap_register_i2c_bus(1, 100, NULL, 0);
 698
 699         omap1_usb_init(&ams_delta_usb_config);
 700         platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));
 701
 702         /*
 703          * As soon as regulator consumers have been registered, assign their
 704          * dev_names to consumer supply entries of respective regulators.
 705          */
 706         keybrd_pwr_consumers[0].dev_name =
 707                         dev_name(&ams_delta_serio_device.dev);
 708
 709         /*
 710          * Once consumer supply entries are populated with dev_names,
 711          * register regulator devices.  At this stage only the keyboard
 712          * power regulator has its consumer supply table fully populated.
 713          */
 714         platform_device_register(&keybrd_pwr_device);
 715
 716         /*
 717          * As soon as GPIO consumers have been registered, assign
 718          * their dev_names to respective GPIO lookup tables.
 719          */
 720         ams_delta_audio_gpio_table.dev_id =
 721                         dev_name(&ams_delta_audio_device.dev);
 722         keybrd_pwr_gpio_table.dev_id = dev_name(&keybrd_pwr_device.dev);
 723         ams_delta_nand_gpio_table.dev_id = dev_name(&ams_delta_nand_device.dev);
 724         ams_delta_lcd_gpio_table.dev_id = dev_name(&ams_delta_lcd_device.dev);
 725
 726         /*
 727          * Once GPIO lookup tables are populated with dev_names, register them.
 728          */
 729         gpiod_add_lookup_tables(ams_delta_gpio_tables,
 730                                 ARRAY_SIZE(ams_delta_gpio_tables));
 731
 732         leds_pdev = gpio_led_register_device(PLATFORM_DEVID_NONE, &leds_pdata);
 733         if (!IS_ERR_OR_NULL(leds_pdev)) {
 734                 leds_gpio_table.dev_id = dev_name(&leds_pdev->dev);
 735                 gpiod_add_lookup_table(&leds_gpio_table);
 736         }
 737
 738         omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1);
 739
 740         omapfb_set_lcd_config(&ams_delta_lcd_config);
 741 }
 742
 743 static void modem_pm(struct uart_port *port, unsigned int state, unsigned old)
 744 {
 745         struct modem_private_data *priv = port->private_data;
 746         int ret;
 747
 748         if (!priv)
 749                 return;
 750
 751         if (IS_ERR(priv->regulator))
 752                 return;
 753
 754         if (state == old)
 755                 return;
 756
 757         if (state == 0)
 758                 ret = regulator_enable(priv->regulator);
 759         else if (old == 0)
 760                 ret = regulator_disable(priv->regulator);
 761         else
 762                 ret = 0;
 763
 764         if (ret)
 765                 dev_warn(port->dev,
 766                          "ams_delta modem_pm: failed to %sable regulator: %d\n",
 767                          state ? "dis" : "en", ret);
 768 }
 769
 770 static struct plat_serial8250_port ams_delta_modem_ports[] = {
 771         {
 772                 .membase        = IOMEM(MODEM_VIRT),
 773                 .mapbase        = MODEM_PHYS,
 774                 .irq            = IRQ_NOTCONNECTED, /* changed later */
 775                 .flags          = UPF_BOOT_AUTOCONF,
 776                 .irqflags       = IRQF_TRIGGER_RISING,
 777                 .iotype         = UPIO_MEM,
 778                 .regshift       = 1,
 779                 .uartclk        = BASE_BAUD * 16,
 780                 .pm             = modem_pm,
 781                 .private_data   = &modem_priv,
 782         },
 783         { },
 784 };
 785
 786 static int ams_delta_modem_pm_activate(struct device *dev)
 787 {
 788         modem_priv.regulator = regulator_get(dev, "RESET#");
 789         if (IS_ERR(modem_priv.regulator))
 790                 return -EPROBE_DEFER;
 791
 792         return 0;
 793 }
 794
 795 static struct dev_pm_domain ams_delta_modem_pm_domain = {
 796         .activate       = ams_delta_modem_pm_activate,
 797 };
 798
 799 static struct platform_device ams_delta_modem_device = {
 800         .name   = "serial8250",
 801         .id     = PLAT8250_DEV_PLATFORM1,
 802         .dev            = {
 803                 .platform_data = ams_delta_modem_ports,
 804                 .pm_domain = &ams_delta_modem_pm_domain,
 805         },
 806 };
 807
 808 /*
 809  * This function expects MODEM IRQ number already assigned to the port.
 810  * The MODEM device requires its RESET# pin kept high during probe.
 811  * That requirement can be fulfilled in several ways:
 812  * - with a descriptor of already functional modem_nreset regulator
 813  *   assigned to the MODEM private data,
 814  * - with the regulator not yet controlled by modem_pm function but
 815  *   already enabled by default on probe,
 816  * - before the modem_nreset regulator is probed, with the pin already
 817  *   set high explicitly.
 818  * The last one is already guaranteed by ams_delta_latch2_init() called
 819  * from machine_init.
 820  * In order to avoid taking over ttyS0 device slot, the MODEM device
 821  * should be registered after OMAP serial ports.  Since those ports
 822  * are registered at arch_initcall, this function can be called safely
 823  * at arch_initcall_sync earliest.
 824  */
 825 static int __init ams_delta_modem_init(void)
 826 {
 827         if (!machine_is_ams_delta())
 828                 return -ENODEV;
 829
 830         omap_cfg_reg(M14_1510_GPIO2);
 831
 832         /* Initialize the modem_nreset regulator consumer before use */
 833         modem_priv.regulator = ERR_PTR(-ENODEV);
 834
 835         return platform_device_register(&ams_delta_modem_device);
 836 }
 837 arch_initcall_sync(ams_delta_modem_init);
 838
 839 static void __init ams_delta_map_io(void)
 840 {
 841         omap1_map_io();
 842         iotable_init(ams_delta_io_desc, ARRAY_SIZE(ams_delta_io_desc));
 843 }
 844
 845 MACHINE_START(AMS_DELTA, "Amstrad E3 (Delta)")
 846         /* Maintainer: Jonathan McDowell <noodles@earth.li> */
 847         .atag_offset    = 0x100,
 848         .map_io         = ams_delta_map_io,
 849         .init_early     = omap1_init_early,
 850         .init_irq       = omap1_init_irq,
 851         .init_machine   = ams_delta_init,
 852         .init_late      = omap1_init_late,
 853         .init_time      = omap1_timer_init,
 854         .restart        = omap1_restart,
 855 MACHINE_END