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/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
 462 static int ams_delta_camera_power(struct device *dev, int power)
 463 {
 464         /*
 465          * turn on camera LED
 466          */
 467         if (power)
 468                 led_trigger_event(ams_delta_camera_led_trigger, LED_FULL);
 469         else
 470                 led_trigger_event(ams_delta_camera_led_trigger, LED_OFF);
 471         return 0;
 472 }
 473 #else
 474 #define ams_delta_camera_power  NULL
 475 #endif
 476
 477 static struct platform_device ams_delta_audio_device = {
 478         .name   = "ams-delta-audio",
 479         .id     = -1,
 480 };
 481
 482 static struct gpiod_lookup_table ams_delta_audio_gpio_table = {
 483         .table = {
 484                 GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_HOOK_SWITCH,
 485                             "hook_switch", 0),
 486                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_CODEC,
 487                             "modem_codec", 0),
 488                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSFREE_MUTE,
 489                             "handsfree_mute", 0),
 490                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSET_MUTE,
 491                             "handset_mute", 0),
 492                 { },
 493         },
 494 };
 495
 496 static struct platform_device cx20442_codec_device = {
 497         .name   = "cx20442-codec",
 498         .id     = -1,
 499 };
 500
 501 static struct resource ams_delta_serio_resources[] = {
 502         {
 503                 .flags  = IORESOURCE_IRQ,
 504                 /*
 505                  * Initialize IRQ resource with invalid IRQ number.
 506                  * It will be replaced with dynamically allocated GPIO IRQ
 507                  * obtained from GPIO chip as soon as the chip is available.
 508                  */
 509                 .start  = -EINVAL,
 510                 .end    = -EINVAL,
 511         },
 512 };
 513
 514 static struct platform_device ams_delta_serio_device = {
 515         .name           = "ams-delta-serio",
 516         .id             = PLATFORM_DEVID_NONE,
 517         .dev            = {
 518                 /*
 519                  * Initialize .platform_data explicitly with NULL to
 520                  * indicate it is going to be used.  It will be replaced
 521                  * with FIQ buffer address as soon as FIQ is initialized.
 522                  */
 523                 .platform_data = NULL,
 524         },
 525         .num_resources  = ARRAY_SIZE(ams_delta_serio_resources),
 526         .resource       = ams_delta_serio_resources,
 527 };
 528
 529 static struct regulator_consumer_supply keybrd_pwr_consumers[] = {
 530         /*
 531          * Initialize supply .dev_name with NULL.  It will be replaced
 532          * with serio dev_name() as soon as the serio device is registered.
 533          */
 534         REGULATOR_SUPPLY("vcc", NULL),
 535 };
 536
 537 static struct regulator_init_data keybrd_pwr_initdata = {
 538         .constraints            = {
 539                 .valid_ops_mask         = REGULATOR_CHANGE_STATUS,
 540         },
 541         .num_consumer_supplies  = ARRAY_SIZE(keybrd_pwr_consumers),
 542         .consumer_supplies      = keybrd_pwr_consumers,
 543 };
 544
 545 static struct fixed_voltage_config keybrd_pwr_config = {
 546         .supply_name            = "keybrd_pwr",
 547         .microvolts             = 5000000,
 548         .init_data              = &keybrd_pwr_initdata,
 549 };
 550
 551 static struct platform_device keybrd_pwr_device = {
 552         .name   = "reg-fixed-voltage",
 553         .id     = PLATFORM_DEVID_AUTO,
 554         .dev    = {
 555                 .platform_data  = &keybrd_pwr_config,
 556         },
 557 };
 558
 559 static struct gpiod_lookup_table keybrd_pwr_gpio_table = {
 560         .table = {
 561                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_KEYBRD_PWR, NULL,
 562                             GPIO_ACTIVE_HIGH),
 563                 { },
 564         },
 565 };
 566
 567 static struct platform_device *ams_delta_devices[] __initdata = {
 568         &latch1_gpio_device,
 569         &latch2_gpio_device,
 570         &ams_delta_kp_device,
 571         &ams_delta_audio_device,
 572         &ams_delta_serio_device,
 573         &ams_delta_nand_device,
 574         &ams_delta_lcd_device,
 575         &cx20442_codec_device,
 576 };
 577
 578 static struct gpiod_lookup_table *ams_delta_gpio_tables[] __initdata = {
 579         &ams_delta_nreset_gpiod_table,
 580         &ams_delta_audio_gpio_table,
 581         &keybrd_pwr_gpio_table,
 582         &ams_delta_lcd_gpio_table,
 583         &ams_delta_nand_gpio_table,
 584 };
 585
 586 /*
 587  * Some drivers may not use GPIO lookup tables but need to be provided
 588  * with GPIO numbers.  The same applies to GPIO based IRQ lines - some
 589  * drivers may even not use GPIO layer but expect just IRQ numbers.
 590  * We could either define GPIO lookup tables then use them on behalf
 591  * of those devices, or we can use GPIO driver level methods for
 592  * identification of GPIO and IRQ numbers. For the purpose of the latter,
 593  * defina a helper function which identifies GPIO chips by their labels.
 594  */
 595 static int gpiochip_match_by_label(struct gpio_chip *chip, void *data)
 596 {
 597         char *label = data;
 598
 599         return !strcmp(label, chip->label);
 600 }
 601
 602 static struct gpiod_hog ams_delta_gpio_hogs[] = {
 603         GPIO_HOG(LATCH2_LABEL, LATCH2_PIN_KEYBRD_DATAOUT, "keybrd_dataout",
 604                  GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW),
 605         {},
 606 };
 607
 608 static struct plat_serial8250_port ams_delta_modem_ports[];
 609
 610 /*
 611  * Obtain MODEM IRQ GPIO descriptor using its hardware pin
 612  * number and assign related IRQ number to the MODEM port.
 613  * Keep the GPIO descriptor open so nobody steps in.
 614  */
 615 static void __init modem_assign_irq(struct gpio_chip *chip)
 616 {
 617         struct gpio_desc *gpiod;
 618
 619         gpiod = gpiochip_request_own_desc(chip, AMS_DELTA_GPIO_PIN_MODEM_IRQ,
 620                                           "modem_irq", GPIO_ACTIVE_HIGH,
 621                                           GPIOD_IN);
 622         if (IS_ERR(gpiod)) {
 623                 pr_err("%s: modem IRQ GPIO request failed (%ld)\n", __func__,
 624                        PTR_ERR(gpiod));
 625         } else {
 626                 ams_delta_modem_ports[0].irq = gpiod_to_irq(gpiod);
 627         }
 628 }
 629
 630 /*
 631  * The purpose of this function is to take care of proper initialization of
 632  * devices and data structures which depend on GPIO lines provided by OMAP GPIO
 633  * banks but their drivers don't use GPIO lookup tables or GPIO layer at all.
 634  * The function may be called as soon as OMAP GPIO devices are probed.
 635  * Since that happens at postcore_initcall, it can be called successfully
 636  * from init_machine or later.
 637  * Dependent devices may be registered from within this function or later.
 638  */
 639 static void __init omap_gpio_deps_init(void)
 640 {
 641         struct gpio_chip *chip;
 642
 643         chip = gpiochip_find(OMAP_GPIO_LABEL, gpiochip_match_by_label);
 644         if (!chip) {
 645                 pr_err("%s: OMAP GPIO chip not found\n", __func__);
 646                 return;
 647         }
 648
 649         /*
 650          * Start with FIQ initialization as it may have to request
 651          * and release successfully each OMAP GPIO pin in turn.
 652          */
 653         ams_delta_init_fiq(chip, &ams_delta_serio_device);
 654
 655         modem_assign_irq(chip);
 656 }
 657
 658 /*
 659  * Initialize latch2 pins with values which are safe for dependent on-board
 660  * devices or useful for their successull initialization even before GPIO
 661  * driver takes control over the latch pins:
 662  * - LATCH2_PIN_LCD_VBLEN       = 0
 663  * - LATCH2_PIN_LCD_NDISP       = 0     Keep LCD device powered off before its
 664  *                                      driver takes control over it.
 665  * - LATCH2_PIN_NAND_NCE        = 0
 666  * - LATCH2_PIN_NAND_NWP        = 0     Keep NAND device down and write-
 667  *                                      protected before its driver takes
 668  *                                      control over it.
 669  * - LATCH2_PIN_KEYBRD_PWR      = 0     Keep keyboard powered off before serio
 670  *                                      driver takes control over it.
 671  * - LATCH2_PIN_KEYBRD_DATAOUT  = 0     Keep low to avoid corruption of first
 672  *                                      byte of data received from attached
 673  *                                      keyboard when serio device is probed;
 674  *                                      the pin is also hogged low by the latch2
 675  *                                      GPIO driver as soon as it is ready.
 676  * - LATCH2_PIN_MODEM_NRESET    = 1     Enable voice MODEM device, allowing for
 677  *                                      its successful probe even before a
 678  *                                      regulator it depends on, which in turn
 679  *                                      takes control over the pin, is set up.
 680  * - LATCH2_PIN_MODEM_CODEC     = 1     Attach voice MODEM CODEC data port
 681  *                                      to the MODEM so the CODEC is under
 682  *                                      control even if audio driver doesn't
 683  *                                      take it over.
 684  */
 685 static void __init ams_delta_latch2_init(void)
 686 {
 687         u16 latch2 = 1 << LATCH2_PIN_MODEM_NRESET | 1 << LATCH2_PIN_MODEM_CODEC;
 688
 689         __raw_writew(latch2, LATCH2_VIRT);
 690 }
 691
 692 static void __init ams_delta_init(void)
 693 {
 694         struct platform_device *leds_pdev;
 695
 696         /* mux pins for uarts */
 697         omap_cfg_reg(UART1_TX);
 698         omap_cfg_reg(UART1_RTS);
 699
 700         /* parallel camera interface */
 701         omap_cfg_reg(H19_1610_CAM_EXCLK);
 702         omap_cfg_reg(J15_1610_CAM_LCLK);
 703         omap_cfg_reg(L18_1610_CAM_VS);
 704         omap_cfg_reg(L15_1610_CAM_HS);
 705         omap_cfg_reg(L19_1610_CAM_D0);
 706         omap_cfg_reg(K14_1610_CAM_D1);
 707         omap_cfg_reg(K15_1610_CAM_D2);
 708         omap_cfg_reg(K19_1610_CAM_D3);
 709         omap_cfg_reg(K18_1610_CAM_D4);
 710         omap_cfg_reg(J14_1610_CAM_D5);
 711         omap_cfg_reg(J19_1610_CAM_D6);
 712         omap_cfg_reg(J18_1610_CAM_D7);
 713
 714         omap_gpio_deps_init();
 715         ams_delta_latch2_init();
 716         gpiod_add_hogs(ams_delta_gpio_hogs);
 717
 718         omap_serial_init();
 719         omap_register_i2c_bus(1, 100, NULL, 0);
 720
 721         omap1_usb_init(&ams_delta_usb_config);
 722 #ifdef CONFIG_LEDS_TRIGGERS
 723         led_trigger_register_simple("ams_delta_camera",
 724                         &ams_delta_camera_led_trigger);
 725 #endif
 726         platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));
 727
 728         /*
 729          * As soon as regulator consumers have been registered, assign their
 730          * dev_names to consumer supply entries of respective regulators.
 731          */
 732         keybrd_pwr_consumers[0].dev_name =
 733                         dev_name(&ams_delta_serio_device.dev);
 734
 735         /*
 736          * Once consumer supply entries are populated with dev_names,
 737          * register regulator devices.  At this stage only the keyboard
 738          * power regulator has its consumer supply table fully populated.
 739          */
 740         platform_device_register(&keybrd_pwr_device);
 741
 742         /*
 743          * As soon as GPIO consumers have been registered, assign
 744          * their dev_names to respective GPIO lookup tables.
 745          */
 746         ams_delta_audio_gpio_table.dev_id =
 747                         dev_name(&ams_delta_audio_device.dev);
 748         keybrd_pwr_gpio_table.dev_id = dev_name(&keybrd_pwr_device.dev);
 749         ams_delta_nand_gpio_table.dev_id = dev_name(&ams_delta_nand_device.dev);
 750         ams_delta_lcd_gpio_table.dev_id = dev_name(&ams_delta_lcd_device.dev);
 751
 752         /*
 753          * Once GPIO lookup tables are populated with dev_names, register them.
 754          */
 755         gpiod_add_lookup_tables(ams_delta_gpio_tables,
 756                                 ARRAY_SIZE(ams_delta_gpio_tables));
 757
 758         leds_pdev = gpio_led_register_device(PLATFORM_DEVID_NONE, &leds_pdata);
 759         if (!IS_ERR_OR_NULL(leds_pdev)) {
 760                 leds_gpio_table.dev_id = dev_name(&leds_pdev->dev);
 761                 gpiod_add_lookup_table(&leds_gpio_table);
 762         }
 763
 764         omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1);
 765
 766         omapfb_set_lcd_config(&ams_delta_lcd_config);
 767 }
 768
 769 static void modem_pm(struct uart_port *port, unsigned int state, unsigned old)
 770 {
 771         struct modem_private_data *priv = port->private_data;
 772         int ret;
 773
 774         if (!priv)
 775                 return;
 776
 777         if (IS_ERR(priv->regulator))
 778                 return;
 779
 780         if (state == old)
 781                 return;
 782
 783         if (state == 0)
 784                 ret = regulator_enable(priv->regulator);
 785         else if (old == 0)
 786                 ret = regulator_disable(priv->regulator);
 787         else
 788                 ret = 0;
 789
 790         if (ret)
 791                 dev_warn(port->dev,
 792                          "ams_delta modem_pm: failed to %sable regulator: %d\n",
 793                          state ? "dis" : "en", ret);
 794 }
 795
 796 static struct plat_serial8250_port ams_delta_modem_ports[] = {
 797         {
 798                 .membase        = IOMEM(MODEM_VIRT),
 799                 .mapbase        = MODEM_PHYS,
 800                 .irq            = IRQ_NOTCONNECTED, /* changed later */
 801                 .flags          = UPF_BOOT_AUTOCONF,
 802                 .irqflags       = IRQF_TRIGGER_RISING,
 803                 .iotype         = UPIO_MEM,
 804                 .regshift       = 1,
 805                 .uartclk        = BASE_BAUD * 16,
 806                 .pm             = modem_pm,
 807                 .private_data   = &modem_priv,
 808         },
 809         { },
 810 };
 811
 812 static struct platform_device ams_delta_modem_device = {
 813         .name   = "serial8250",
 814         .id     = PLAT8250_DEV_PLATFORM1,
 815         .dev            = {
 816                 .platform_data = ams_delta_modem_ports,
 817         },
 818 };
 819
 820 static int __init modem_nreset_init(void)
 821 {
 822         int err;
 823
 824         err = platform_device_register(&modem_nreset_device);
 825         if (err)
 826                 pr_err("Couldn't register the modem regulator device\n");
 827
 828         return err;
 829 }
 830
 831
 832 /*
 833  * This function expects MODEM IRQ number already assigned to the port.
 834  * The MODEM device requires its RESET# pin kept high during probe.
 835  * That requirement can be fulfilled in several ways:
 836  * - with a descriptor of already functional modem_nreset regulator
 837  *   assigned to the MODEM private data,
 838  * - with the regulator not yet controlled by modem_pm function but
 839  *   already enabled by default on probe,
 840  * - before the modem_nreset regulator is probed, with the pin already
 841  *   set high explicitly.
 842  * The last one is already guaranteed by ams_delta_latch2_init() called
 843  * from machine_init.
 844  * In order to avoid taking over ttyS0 device slot, the MODEM device
 845  * should be registered after OMAP serial ports.  Since those ports
 846  * are registered at arch_initcall, this function can be called safely
 847  * at arch_initcall_sync earliest.
 848  */
 849 static int __init ams_delta_modem_init(void)
 850 {
 851         int err;
 852
 853         if (!machine_is_ams_delta())
 854                 return -ENODEV;
 855
 856         omap_cfg_reg(M14_1510_GPIO2);
 857
 858         /* Initialize the modem_nreset regulator consumer before use */
 859         modem_priv.regulator = ERR_PTR(-ENODEV);
 860
 861         err = platform_device_register(&ams_delta_modem_device);
 862
 863         return err;
 864 }
 865 arch_initcall_sync(ams_delta_modem_init);
 866
 867 static int __init late_init(void)
 868 {
 869         int err;
 870
 871         err = modem_nreset_init();
 872         if (err)
 873                 return err;
 874
 875         /*
 876          * Once the modem device is registered, the modem_nreset
 877          * regulator can be requested on behalf of that device.
 878          */
 879         modem_priv.regulator = regulator_get(&ams_delta_modem_device.dev,
 880                         "RESET#");
 881         if (IS_ERR(modem_priv.regulator)) {
 882                 err = PTR_ERR(modem_priv.regulator);
 883                 goto unregister;
 884         }
 885         return 0;
 886
 887 unregister:
 888         platform_device_unregister(&ams_delta_modem_device);
 889         return err;
 890 }
 891
 892 static void __init ams_delta_init_late(void)
 893 {
 894         omap1_init_late();
 895         late_init();
 896 }
 897
 898 static void __init ams_delta_map_io(void)
 899 {
 900         omap15xx_map_io();
 901         iotable_init(ams_delta_io_desc, ARRAY_SIZE(ams_delta_io_desc));
 902 }
 903
 904 MACHINE_START(AMS_DELTA, "Amstrad E3 (Delta)")
 905         /* Maintainer: Jonathan McDowell <noodles@earth.li> */
 906         .atag_offset    = 0x100,
 907         .map_io         = ams_delta_map_io,
 908         .init_early     = omap1_init_early,
 909         .init_irq       = omap1_init_irq,
 910         .handle_irq     = omap1_handle_irq,
 911         .init_machine   = ams_delta_init,
 912         .init_late      = ams_delta_init_late,
 913         .init_time      = omap1_timer_init,
 914         .restart        = omap1_restart,
 915 MACHINE_END