arch/arm/mach-omap1/board-ams-delta.c

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
ams_delta_camera_power
gpiochip_match_by_label
modem_assign_irq
omap_gpio_deps_init
ams_delta_latch2_init
ams_delta_init
modem_pm
modem_nreset_init
ams_delta_modem_init
late_init
ams_delta_init_late
ams_delta_map_io
   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/platform_device.h>
  21 #include <linux/regulator/consumer.h>
  22 #include <linux/regulator/fixed.h>
  23 #include <linux/regulator/machine.h>
  24 #include <linux/serial_8250.h>
  25 #include <linux/export.h>
  26 #include <linux/omapfb.h>
  27 #include <linux/io.h>
  28 #include <linux/platform_data/gpio-omap.h>
  29 
  30 #include <media/soc_camera.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 "camera.h"
  42 #include <mach/usb.h>
  43 
  44 #include "ams-delta-fiq.h"
  45 #include "board-ams-delta.h"
  46 #include "iomap.h"
  47 #include "common.h"
  48 
  49 static const unsigned int ams_delta_keymap[] = {
  50         KEY(0, 0, KEY_F1),              /* Advert    */
  51 
  52         KEY(0, 3, KEY_COFFEE),          /* Games     */
  53         KEY(0, 2, KEY_QUESTION),        /* Directory */
  54         KEY(2, 3, KEY_CONNECT),         /* Internet  */
  55         KEY(1, 2, KEY_SHOP),            /* Services  */
  56         KEY(1, 1, KEY_PHONE),           /* VoiceMail */
  57 
  58         KEY(0, 1, KEY_DELETE),          /* Delete    */
  59         KEY(2, 2, KEY_PLAY),            /* Play      */
  60         KEY(1, 0, KEY_PAGEUP),          /* Up        */
  61         KEY(1, 3, KEY_PAGEDOWN),        /* Down      */
  62         KEY(2, 0, KEY_EMAIL),           /* ReadEmail */
  63         KEY(2, 1, KEY_STOP),            /* Stop      */
  64 
  65         /* Numeric keypad portion */
  66         KEY(0, 7, KEY_KP1),
  67         KEY(0, 6, KEY_KP2),
  68         KEY(0, 5, KEY_KP3),
  69         KEY(1, 7, KEY_KP4),
  70         KEY(1, 6, KEY_KP5),
  71         KEY(1, 5, KEY_KP6),
  72         KEY(2, 7, KEY_KP7),
  73         KEY(2, 6, KEY_KP8),
  74         KEY(2, 5, KEY_KP9),
  75         KEY(3, 6, KEY_KP0),
  76         KEY(3, 7, KEY_KPASTERISK),
  77         KEY(3, 5, KEY_KPDOT),           /* # key     */
  78         KEY(7, 2, KEY_NUMLOCK),         /* Mute      */
  79         KEY(7, 1, KEY_KPMINUS),         /* Recall    */
  80         KEY(6, 1, KEY_KPPLUS),          /* Redial    */
  81         KEY(7, 6, KEY_KPSLASH),         /* Handsfree */
  82         KEY(6, 0, KEY_ENTER),           /* Video     */
  83 
  84         KEY(7, 4, KEY_CAMERA),          /* Photo     */
  85 
  86         KEY(0, 4, KEY_F2),              /* Home      */
  87         KEY(1, 4, KEY_F3),              /* Office    */
  88         KEY(2, 4, KEY_F4),              /* Mobile    */
  89         KEY(7, 7, KEY_F5),              /* SMS       */
  90         KEY(7, 5, KEY_F6),              /* Email     */
  91 
  92         /* QWERTY portion of keypad */
  93         KEY(3, 4, KEY_Q),
  94         KEY(3, 3, KEY_W),
  95         KEY(3, 2, KEY_E),
  96         KEY(3, 1, KEY_R),
  97         KEY(3, 0, KEY_T),
  98         KEY(4, 7, KEY_Y),
  99         KEY(4, 6, KEY_U),
 100         KEY(4, 5, KEY_I),
 101         KEY(4, 4, KEY_O),
 102         KEY(4, 3, KEY_P),
 103 
 104         KEY(4, 2, KEY_A),
 105         KEY(4, 1, KEY_S),
 106         KEY(4, 0, KEY_D),
 107         KEY(5, 7, KEY_F),
 108         KEY(5, 6, KEY_G),
 109         KEY(5, 5, KEY_H),
 110         KEY(5, 4, KEY_J),
 111         KEY(5, 3, KEY_K),
 112         KEY(5, 2, KEY_L),
 113 
 114         KEY(5, 1, KEY_Z),
 115         KEY(5, 0, KEY_X),
 116         KEY(6, 7, KEY_C),
 117         KEY(6, 6, KEY_V),
 118         KEY(6, 5, KEY_B),
 119         KEY(6, 4, KEY_N),
 120         KEY(6, 3, KEY_M),
 121         KEY(6, 2, KEY_SPACE),
 122 
 123         KEY(7, 0, KEY_LEFTSHIFT),       /* Vol up    */
 124         KEY(7, 3, KEY_LEFTCTRL),        /* Vol down  */
 125 };
 126 
 127 #define LATCH1_PHYS     0x01000000
 128 #define LATCH1_VIRT     0xEA000000
 129 #define MODEM_PHYS      0x04000000
 130 #define MODEM_VIRT      0xEB000000
 131 #define LATCH2_PHYS     0x08000000
 132 #define LATCH2_VIRT     0xEC000000
 133 
 134 static struct map_desc ams_delta_io_desc[] __initdata = {
 135         /* AMS_DELTA_LATCH1 */
 136         {
 137                 .virtual        = LATCH1_VIRT,
 138                 .pfn            = __phys_to_pfn(LATCH1_PHYS),
 139                 .length         = 0x01000000,
 140                 .type           = MT_DEVICE
 141         },
 142         /* AMS_DELTA_LATCH2 */
 143         {
 144                 .virtual        = LATCH2_VIRT,
 145                 .pfn            = __phys_to_pfn(LATCH2_PHYS),
 146                 .length         = 0x01000000,
 147                 .type           = MT_DEVICE
 148         },
 149         /* AMS_DELTA_MODEM */
 150         {
 151                 .virtual        = MODEM_VIRT,
 152                 .pfn            = __phys_to_pfn(MODEM_PHYS),
 153                 .length         = 0x01000000,
 154                 .type           = MT_DEVICE
 155         }
 156 };
 157 
 158 static const struct omap_lcd_config ams_delta_lcd_config __initconst = {
 159         .ctrl_name      = "internal",
 160 };
 161 
 162 static struct omap_usb_config ams_delta_usb_config __initdata = {
 163         .register_host  = 1,
 164         .hmc_mode       = 16,
 165         .pins[0]        = 2,
 166 };
 167 
 168 #define LATCH1_NGPIO            8
 169 
 170 static struct resource latch1_resources[] = {
 171         [0] = {
 172                 .name   = "dat",
 173                 .start  = LATCH1_PHYS,
 174                 .end    = LATCH1_PHYS + (LATCH1_NGPIO - 1) / 8,
 175                 .flags  = IORESOURCE_MEM,
 176         },
 177 };
 178 
 179 #define LATCH1_LABEL    "latch1"
 180 
 181 static struct bgpio_pdata latch1_pdata = {
 182         .label  = LATCH1_LABEL,
 183         .base   = -1,
 184         .ngpio  = LATCH1_NGPIO,
 185 };
 186 
 187 static struct platform_device latch1_gpio_device = {
 188         .name           = "basic-mmio-gpio",
 189         .id             = 0,
 190         .resource       = latch1_resources,
 191         .num_resources  = ARRAY_SIZE(latch1_resources),
 192         .dev            = {
 193                 .platform_data  = &latch1_pdata,
 194         },
 195 };
 196 
 197 #define LATCH1_PIN_LED_CAMERA           0
 198 #define LATCH1_PIN_LED_ADVERT           1
 199 #define LATCH1_PIN_LED_MAIL             2
 200 #define LATCH1_PIN_LED_HANDSFREE        3
 201 #define LATCH1_PIN_LED_VOICEMAIL        4
 202 #define LATCH1_PIN_LED_VOICE            5
 203 #define LATCH1_PIN_DOCKIT1              6
 204 #define LATCH1_PIN_DOCKIT2              7
 205 
 206 #define LATCH2_NGPIO                    16
 207 
 208 static struct resource latch2_resources[] = {
 209         [0] = {
 210                 .name   = "dat",
 211                 .start  = LATCH2_PHYS,
 212                 .end    = LATCH2_PHYS + (LATCH2_NGPIO - 1) / 8,
 213                 .flags  = IORESOURCE_MEM,
 214         },
 215 };
 216 
 217 #define LATCH2_LABEL    "latch2"
 218 
 219 static struct bgpio_pdata latch2_pdata = {
 220         .label  = LATCH2_LABEL,
 221         .base   = -1,
 222         .ngpio  = LATCH2_NGPIO,
 223 };
 224 
 225 static struct platform_device latch2_gpio_device = {
 226         .name           = "basic-mmio-gpio",
 227         .id             = 1,
 228         .resource       = latch2_resources,
 229         .num_resources  = ARRAY_SIZE(latch2_resources),
 230         .dev            = {
 231                 .platform_data  = &latch2_pdata,
 232         },
 233 };
 234 
 235 #define LATCH2_PIN_LCD_VBLEN            0
 236 #define LATCH2_PIN_LCD_NDISP            1
 237 #define LATCH2_PIN_NAND_NCE             2
 238 #define LATCH2_PIN_NAND_NRE             3
 239 #define LATCH2_PIN_NAND_NWP             4
 240 #define LATCH2_PIN_NAND_NWE             5
 241 #define LATCH2_PIN_NAND_ALE             6
 242 #define LATCH2_PIN_NAND_CLE             7
 243 #define LATCH2_PIN_KEYBRD_PWR           8
 244 #define LATCH2_PIN_KEYBRD_DATAOUT       9
 245 #define LATCH2_PIN_SCARD_RSTIN          10
 246 #define LATCH2_PIN_SCARD_CMDVCC         11
 247 #define LATCH2_PIN_MODEM_NRESET         12
 248 #define LATCH2_PIN_MODEM_CODEC          13
 249 #define LATCH2_PIN_HANDSFREE_MUTE       14
 250 #define LATCH2_PIN_HANDSET_MUTE         15
 251 
 252 static struct regulator_consumer_supply modem_nreset_consumers[] = {
 253         REGULATOR_SUPPLY("RESET#", "serial8250.1"),
 254         REGULATOR_SUPPLY("POR", "cx20442-codec"),
 255 };
 256 
 257 static struct regulator_init_data modem_nreset_data = {
 258         .constraints            = {
 259                 .valid_ops_mask         = REGULATOR_CHANGE_STATUS,
 260                 .boot_on                = 1,
 261         },
 262         .num_consumer_supplies  = ARRAY_SIZE(modem_nreset_consumers),
 263         .consumer_supplies      = modem_nreset_consumers,
 264 };
 265 
 266 static struct fixed_voltage_config modem_nreset_config = {
 267         .supply_name            = "modem_nreset",
 268         .microvolts             = 3300000,
 269         .startup_delay          = 25000,
 270         .enabled_at_boot        = 1,
 271         .init_data              = &modem_nreset_data,
 272 };
 273 
 274 static struct platform_device modem_nreset_device = {
 275         .name   = "reg-fixed-voltage",
 276         .id     = -1,
 277         .dev    = {
 278                 .platform_data  = &modem_nreset_config,
 279         },
 280 };
 281 
 282 static struct gpiod_lookup_table ams_delta_nreset_gpiod_table = {
 283         .dev_id = "reg-fixed-voltage",
 284         .table = {
 285                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_NRESET,
 286                             NULL, GPIO_ACTIVE_HIGH),
 287                 { },
 288         },
 289 };
 290 
 291 struct modem_private_data {
 292         struct regulator *regulator;
 293 };
 294 
 295 static struct modem_private_data modem_priv;
 296 
 297 static struct platform_device ams_delta_nand_device = {
 298         .name   = "ams-delta-nand",
 299         .id     = -1,
 300 };
 301 
 302 #define OMAP_GPIO_LABEL         "gpio-0-15"
 303 #define OMAP_MPUIO_LABEL        "mpuio"
 304 
 305 static struct gpiod_lookup_table ams_delta_nand_gpio_table = {
 306         .table = {
 307                 GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_NAND_RB, "rdy",
 308                             0),
 309                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NCE, "nce", 0),
 310                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NRE, "nre", 0),
 311                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWP, "nwp", 0),
 312                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWE, "nwe", 0),
 313                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_ALE, "ale", 0),
 314                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_CLE, "cle", 0),
 315                 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 0, "data", 0, 0),
 316                 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 1, "data", 1, 0),
 317                 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 2, "data", 2, 0),
 318                 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 3, "data", 3, 0),
 319                 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 4, "data", 4, 0),
 320                 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 5, "data", 5, 0),
 321                 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 6, "data", 6, 0),
 322                 GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 7, "data", 7, 0),
 323                 { },
 324         },
 325 };
 326 
 327 static struct resource ams_delta_kp_resources[] = {
 328         [0] = {
 329                 .start  = INT_KEYBOARD,
 330                 .end    = INT_KEYBOARD,
 331                 .flags  = IORESOURCE_IRQ,
 332         },
 333 };
 334 
 335 static const struct matrix_keymap_data ams_delta_keymap_data = {
 336         .keymap         = ams_delta_keymap,
 337         .keymap_size    = ARRAY_SIZE(ams_delta_keymap),
 338 };
 339 
 340 static struct omap_kp_platform_data ams_delta_kp_data = {
 341         .rows           = 8,
 342         .cols           = 8,
 343         .keymap_data    = &ams_delta_keymap_data,
 344         .delay          = 9,
 345 };
 346 
 347 static struct platform_device ams_delta_kp_device = {
 348         .name           = "omap-keypad",
 349         .id             = -1,
 350         .dev            = {
 351                 .platform_data = &ams_delta_kp_data,
 352         },
 353         .num_resources  = ARRAY_SIZE(ams_delta_kp_resources),
 354         .resource       = ams_delta_kp_resources,
 355 };
 356 
 357 static struct platform_device ams_delta_lcd_device = {
 358         .name   = "lcd_ams_delta",
 359         .id     = -1,
 360 };
 361 
 362 static struct gpiod_lookup_table ams_delta_lcd_gpio_table = {
 363         .table = {
 364                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_VBLEN, "vblen", 0),
 365                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_LCD_NDISP, "ndisp", 0),
 366                 { },
 367         },
 368 };
 369 
 370 static struct gpio_led gpio_leds[] __initdata = {
 371         [LATCH1_PIN_LED_CAMERA] = {
 372                 .name            = "camera",
 373                 .default_state   = LEDS_GPIO_DEFSTATE_OFF,
 374 #ifdef CONFIG_LEDS_TRIGGERS
 375                 .default_trigger = "ams_delta_camera",
 376 #endif
 377         },
 378         [LATCH1_PIN_LED_ADVERT] = {
 379                 .name            = "advert",
 380                 .default_state   = LEDS_GPIO_DEFSTATE_OFF,
 381         },
 382         [LATCH1_PIN_LED_MAIL] = {
 383                 .name            = "email",
 384                 .default_state   = LEDS_GPIO_DEFSTATE_OFF,
 385         },
 386         [LATCH1_PIN_LED_HANDSFREE] = {
 387                 .name            = "handsfree",
 388                 .default_state   = LEDS_GPIO_DEFSTATE_OFF,
 389         },
 390         [LATCH1_PIN_LED_VOICEMAIL] = {
 391                 .name            = "voicemail",
 392                 .default_state   = LEDS_GPIO_DEFSTATE_OFF,
 393         },
 394         [LATCH1_PIN_LED_VOICE] = {
 395                 .name            = "voice",
 396                 .default_state   = LEDS_GPIO_DEFSTATE_OFF,
 397         },
 398 };
 399 
 400 static const struct gpio_led_platform_data leds_pdata __initconst = {
 401         .leds           = gpio_leds,
 402         .num_leds       = ARRAY_SIZE(gpio_leds),
 403 };
 404 
 405 static struct gpiod_lookup_table leds_gpio_table = {
 406         .table = {
 407                 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_CAMERA, NULL,
 408                                 LATCH1_PIN_LED_CAMERA, 0),
 409                 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_ADVERT, NULL,
 410                                 LATCH1_PIN_LED_ADVERT, 0),
 411                 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_MAIL, NULL,
 412                                 LATCH1_PIN_LED_MAIL, 0),
 413                 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_HANDSFREE, NULL,
 414                                 LATCH1_PIN_LED_HANDSFREE, 0),
 415                 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICEMAIL, NULL,
 416                                 LATCH1_PIN_LED_VOICEMAIL, 0),
 417                 GPIO_LOOKUP_IDX(LATCH1_LABEL, LATCH1_PIN_LED_VOICE, NULL,
 418                                 LATCH1_PIN_LED_VOICE, 0),
 419                 { },
 420         },
 421 };
 422 
 423 static struct i2c_board_info ams_delta_camera_board_info[] = {
 424         {
 425                 I2C_BOARD_INFO("ov6650", 0x60),
 426         },
 427 };
 428 
 429 #ifdef CONFIG_LEDS_TRIGGERS
 430 DEFINE_LED_TRIGGER(ams_delta_camera_led_trigger);
 431 
 432 static int ams_delta_camera_power(struct device *dev, int power)
 433 {
 434         /*
 435          * turn on camera LED
 436          */
 437         if (power)
 438                 led_trigger_event(ams_delta_camera_led_trigger, LED_FULL);
 439         else
 440                 led_trigger_event(ams_delta_camera_led_trigger, LED_OFF);
 441         return 0;
 442 }
 443 #else
 444 #define ams_delta_camera_power  NULL
 445 #endif
 446 
 447 static struct soc_camera_link ams_delta_iclink = {
 448         .bus_id         = 0,    /* OMAP1 SoC camera bus */
 449         .i2c_adapter_id = 1,
 450         .board_info     = &ams_delta_camera_board_info[0],
 451         .module_name    = "ov6650",
 452         .power          = ams_delta_camera_power,
 453 };
 454 
 455 static struct platform_device ams_delta_camera_device = {
 456         .name   = "soc-camera-pdrv",
 457         .id     = 0,
 458         .dev    = {
 459                 .platform_data = &ams_delta_iclink,
 460         },
 461 };
 462 
 463 static struct omap1_cam_platform_data ams_delta_camera_platform_data = {
 464         .camexclk_khz   = 12000,        /* default 12MHz clock, no extra DPLL */
 465         .lclk_khz_max   = 1334,         /* results in 5fps CIF, 10fps QCIF */
 466 };
 467 
 468 static struct platform_device ams_delta_audio_device = {
 469         .name   = "ams-delta-audio",
 470         .id     = -1,
 471 };
 472 
 473 static struct gpiod_lookup_table ams_delta_audio_gpio_table = {
 474         .table = {
 475                 GPIO_LOOKUP(OMAP_GPIO_LABEL, AMS_DELTA_GPIO_PIN_HOOK_SWITCH,
 476                             "hook_switch", 0),
 477                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_MODEM_CODEC,
 478                             "modem_codec", 0),
 479                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSFREE_MUTE,
 480                             "handsfree_mute", 0),
 481                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_HANDSET_MUTE,
 482                             "handset_mute", 0),
 483                 { },
 484         },
 485 };
 486 
 487 static struct platform_device cx20442_codec_device = {
 488         .name   = "cx20442-codec",
 489         .id     = -1,
 490 };
 491 
 492 static struct resource ams_delta_serio_resources[] = {
 493         {
 494                 .flags  = IORESOURCE_IRQ,
 495                 /*
 496                  * Initialize IRQ resource with invalid IRQ number.
 497                  * It will be replaced with dynamically allocated GPIO IRQ
 498                  * obtained from GPIO chip as soon as the chip is available.
 499                  */
 500                 .start  = -EINVAL,
 501                 .end    = -EINVAL,
 502         },
 503 };
 504 
 505 static struct platform_device ams_delta_serio_device = {
 506         .name           = "ams-delta-serio",
 507         .id             = PLATFORM_DEVID_NONE,
 508         .dev            = {
 509                 /*
 510                  * Initialize .platform_data explicitly with NULL to
 511                  * indicate it is going to be used.  It will be replaced
 512                  * with FIQ buffer address as soon as FIQ is initialized.
 513                  */
 514                 .platform_data = NULL,
 515         },
 516         .num_resources  = ARRAY_SIZE(ams_delta_serio_resources),
 517         .resource       = ams_delta_serio_resources,
 518 };
 519 
 520 static struct regulator_consumer_supply keybrd_pwr_consumers[] = {
 521         /*
 522          * Initialize supply .dev_name with NULL.  It will be replaced
 523          * with serio dev_name() as soon as the serio device is registered.
 524          */
 525         REGULATOR_SUPPLY("vcc", NULL),
 526 };
 527 
 528 static struct regulator_init_data keybrd_pwr_initdata = {
 529         .constraints            = {
 530                 .valid_ops_mask         = REGULATOR_CHANGE_STATUS,
 531         },
 532         .num_consumer_supplies  = ARRAY_SIZE(keybrd_pwr_consumers),
 533         .consumer_supplies      = keybrd_pwr_consumers,
 534 };
 535 
 536 static struct fixed_voltage_config keybrd_pwr_config = {
 537         .supply_name            = "keybrd_pwr",
 538         .microvolts             = 5000000,
 539         .init_data              = &keybrd_pwr_initdata,
 540 };
 541 
 542 static struct platform_device keybrd_pwr_device = {
 543         .name   = "reg-fixed-voltage",
 544         .id     = PLATFORM_DEVID_AUTO,
 545         .dev    = {
 546                 .platform_data  = &keybrd_pwr_config,
 547         },
 548 };
 549 
 550 static struct gpiod_lookup_table keybrd_pwr_gpio_table = {
 551         .table = {
 552                 GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_KEYBRD_PWR, NULL,
 553                             GPIO_ACTIVE_HIGH),
 554                 { },
 555         },
 556 };
 557 
 558 static struct platform_device *ams_delta_devices[] __initdata = {
 559         &latch1_gpio_device,
 560         &latch2_gpio_device,
 561         &ams_delta_kp_device,
 562         &ams_delta_camera_device,
 563         &ams_delta_audio_device,
 564         &ams_delta_serio_device,
 565         &ams_delta_nand_device,
 566         &ams_delta_lcd_device,
 567         &cx20442_codec_device,
 568 };
 569 
 570 static struct gpiod_lookup_table *ams_delta_gpio_tables[] __initdata = {
 571         &ams_delta_nreset_gpiod_table,
 572         &ams_delta_audio_gpio_table,
 573         &keybrd_pwr_gpio_table,
 574         &ams_delta_lcd_gpio_table,
 575         &ams_delta_nand_gpio_table,
 576 };
 577 
 578 /*
 579  * Some drivers may not use GPIO lookup tables but need to be provided
 580  * with GPIO numbers.  The same applies to GPIO based IRQ lines - some
 581  * drivers may even not use GPIO layer but expect just IRQ numbers.
 582  * We could either define GPIO lookup tables then use them on behalf
 583  * of those devices, or we can use GPIO driver level methods for
 584  * identification of GPIO and IRQ numbers. For the purpose of the latter,
 585  * defina a helper function which identifies GPIO chips by their labels.
 586  */
 587 static int gpiochip_match_by_label(struct gpio_chip *chip, void *data)
 588 {
 589         char *label = data;
 590 
 591         return !strcmp(label, chip->label);
 592 }
 593 
 594 static struct gpiod_hog ams_delta_gpio_hogs[] = {
 595         GPIO_HOG(LATCH2_LABEL, LATCH2_PIN_KEYBRD_DATAOUT, "keybrd_dataout",
 596                  GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW),
 597         {},
 598 };
 599 
 600 static struct plat_serial8250_port ams_delta_modem_ports[];
 601 
 602 /*
 603  * Obtain MODEM IRQ GPIO descriptor using its hardware pin
 604  * number and assign related IRQ number to the MODEM port.
 605  * Keep the GPIO descriptor open so nobody steps in.
 606  */
 607 static void __init modem_assign_irq(struct gpio_chip *chip)
 608 {
 609         struct gpio_desc *gpiod;
 610 
 611         gpiod = gpiochip_request_own_desc(chip, AMS_DELTA_GPIO_PIN_MODEM_IRQ,
 612                                           "modem_irq", GPIO_ACTIVE_HIGH,
 613                                           GPIOD_IN);
 614         if (IS_ERR(gpiod)) {
 615                 pr_err("%s: modem IRQ GPIO request failed (%ld)\n", __func__,
 616                        PTR_ERR(gpiod));
 617         } else {
 618                 ams_delta_modem_ports[0].irq = gpiod_to_irq(gpiod);
 619         }
 620 }
 621 
 622 /*
 623  * The purpose of this function is to take care of proper initialization of
 624  * devices and data structures which depend on GPIO lines provided by OMAP GPIO
 625  * banks but their drivers don't use GPIO lookup tables or GPIO layer at all.
 626  * The function may be called as soon as OMAP GPIO devices are probed.
 627  * Since that happens at postcore_initcall, it can be called successfully
 628  * from init_machine or later.
 629  * Dependent devices may be registered from within this function or later.
 630  */
 631 static void __init omap_gpio_deps_init(void)
 632 {
 633         struct gpio_chip *chip;
 634 
 635         chip = gpiochip_find(OMAP_GPIO_LABEL, gpiochip_match_by_label);
 636         if (!chip) {
 637                 pr_err("%s: OMAP GPIO chip not found\n", __func__);
 638                 return;
 639         }
 640 
 641         /*
 642          * Start with FIQ initialization as it may have to request
 643          * and release successfully each OMAP GPIO pin in turn.
 644          */
 645         ams_delta_init_fiq(chip, &ams_delta_serio_device);
 646 
 647         modem_assign_irq(chip);
 648 }
 649 
 650 /*
 651  * Initialize latch2 pins with values which are safe for dependent on-board
 652  * devices or useful for their successull initialization even before GPIO
 653  * driver takes control over the latch pins:
 654  * - LATCH2_PIN_LCD_VBLEN       = 0
 655  * - LATCH2_PIN_LCD_NDISP       = 0     Keep LCD device powered off before its
 656  *                                      driver takes control over it.
 657  * - LATCH2_PIN_NAND_NCE        = 0
 658  * - LATCH2_PIN_NAND_NWP        = 0     Keep NAND device down and write-
 659  *                                      protected before its driver takes
 660  *                                      control over it.
 661  * - LATCH2_PIN_KEYBRD_PWR      = 0     Keep keyboard powered off before serio
 662  *                                      driver takes control over it.
 663  * - LATCH2_PIN_KEYBRD_DATAOUT  = 0     Keep low to avoid corruption of first
 664  *                                      byte of data received from attached
 665  *                                      keyboard when serio device is probed;
 666  *                                      the pin is also hogged low by the latch2
 667  *                                      GPIO driver as soon as it is ready.
 668  * - LATCH2_PIN_MODEM_NRESET    = 1     Enable voice MODEM device, allowing for
 669  *                                      its successful probe even before a
 670  *                                      regulator it depends on, which in turn
 671  *                                      takes control over the pin, is set up.
 672  * - LATCH2_PIN_MODEM_CODEC     = 1     Attach voice MODEM CODEC data port
 673  *                                      to the MODEM so the CODEC is under
 674  *                                      control even if audio driver doesn't
 675  *                                      take it over.
 676  */
 677 static void __init ams_delta_latch2_init(void)
 678 {
 679         u16 latch2 = 1 << LATCH2_PIN_MODEM_NRESET | 1 << LATCH2_PIN_MODEM_CODEC;
 680 
 681         __raw_writew(latch2, LATCH2_VIRT);
 682 }
 683 
 684 static void __init ams_delta_init(void)
 685 {
 686         struct platform_device *leds_pdev;
 687 
 688         /* mux pins for uarts */
 689         omap_cfg_reg(UART1_TX);
 690         omap_cfg_reg(UART1_RTS);
 691 
 692         /* parallel camera interface */
 693         omap_cfg_reg(H19_1610_CAM_EXCLK);
 694         omap_cfg_reg(J15_1610_CAM_LCLK);
 695         omap_cfg_reg(L18_1610_CAM_VS);
 696         omap_cfg_reg(L15_1610_CAM_HS);
 697         omap_cfg_reg(L19_1610_CAM_D0);
 698         omap_cfg_reg(K14_1610_CAM_D1);
 699         omap_cfg_reg(K15_1610_CAM_D2);
 700         omap_cfg_reg(K19_1610_CAM_D3);
 701         omap_cfg_reg(K18_1610_CAM_D4);
 702         omap_cfg_reg(J14_1610_CAM_D5);
 703         omap_cfg_reg(J19_1610_CAM_D6);
 704         omap_cfg_reg(J18_1610_CAM_D7);
 705 
 706         omap_gpio_deps_init();
 707         ams_delta_latch2_init();
 708         gpiod_add_hogs(ams_delta_gpio_hogs);
 709 
 710         omap_serial_init();
 711         omap_register_i2c_bus(1, 100, NULL, 0);
 712 
 713         omap1_usb_init(&ams_delta_usb_config);
 714         omap1_set_camera_info(&ams_delta_camera_platform_data);
 715 #ifdef CONFIG_LEDS_TRIGGERS
 716         led_trigger_register_simple("ams_delta_camera",
 717                         &ams_delta_camera_led_trigger);
 718 #endif
 719         platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));
 720 
 721         /*
 722          * As soon as regulator consumers have been registered, assign their
 723          * dev_names to consumer supply entries of respective regulators.
 724          */
 725         keybrd_pwr_consumers[0].dev_name =
 726                         dev_name(&ams_delta_serio_device.dev);
 727 
 728         /*
 729          * Once consumer supply entries are populated with dev_names,
 730          * register regulator devices.  At this stage only the keyboard
 731          * power regulator has its consumer supply table fully populated.
 732          */
 733         platform_device_register(&keybrd_pwr_device);
 734 
 735         /*
 736          * As soon as GPIO consumers have been registered, assign
 737          * their dev_names to respective GPIO lookup tables.
 738          */
 739         ams_delta_audio_gpio_table.dev_id =
 740                         dev_name(&ams_delta_audio_device.dev);
 741         keybrd_pwr_gpio_table.dev_id = dev_name(&keybrd_pwr_device.dev);
 742         ams_delta_nand_gpio_table.dev_id = dev_name(&ams_delta_nand_device.dev);
 743         ams_delta_lcd_gpio_table.dev_id = dev_name(&ams_delta_lcd_device.dev);
 744 
 745         /*
 746          * Once GPIO lookup tables are populated with dev_names, register them.
 747          */
 748         gpiod_add_lookup_tables(ams_delta_gpio_tables,
 749                                 ARRAY_SIZE(ams_delta_gpio_tables));
 750 
 751         leds_pdev = gpio_led_register_device(PLATFORM_DEVID_NONE, &leds_pdata);
 752         if (!IS_ERR_OR_NULL(leds_pdev)) {
 753                 leds_gpio_table.dev_id = dev_name(&leds_pdev->dev);
 754                 gpiod_add_lookup_table(&leds_gpio_table);
 755         }
 756 
 757         omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1);
 758 
 759         omapfb_set_lcd_config(&ams_delta_lcd_config);
 760 }
 761 
 762 static void modem_pm(struct uart_port *port, unsigned int state, unsigned old)
 763 {
 764         struct modem_private_data *priv = port->private_data;
 765         int ret;
 766 
 767         if (!priv)
 768                 return;
 769 
 770         if (IS_ERR(priv->regulator))
 771                 return;
 772 
 773         if (state == old)
 774                 return;
 775 
 776         if (state == 0)
 777                 ret = regulator_enable(priv->regulator);
 778         else if (old == 0)
 779                 ret = regulator_disable(priv->regulator);
 780         else
 781                 ret = 0;
 782 
 783         if (ret)
 784                 dev_warn(port->dev,
 785                          "ams_delta modem_pm: failed to %sable regulator: %d\n",
 786                          state ? "dis" : "en", ret);
 787 }
 788 
 789 static struct plat_serial8250_port ams_delta_modem_ports[] = {
 790         {
 791                 .membase        = IOMEM(MODEM_VIRT),
 792                 .mapbase        = MODEM_PHYS,
 793                 .irq            = IRQ_NOTCONNECTED, /* changed later */
 794                 .flags          = UPF_BOOT_AUTOCONF,
 795                 .irqflags       = IRQF_TRIGGER_RISING,
 796                 .iotype         = UPIO_MEM,
 797                 .regshift       = 1,
 798                 .uartclk        = BASE_BAUD * 16,
 799                 .pm             = modem_pm,
 800                 .private_data   = &modem_priv,
 801         },
 802         { },
 803 };
 804 
 805 static struct platform_device ams_delta_modem_device = {
 806         .name   = "serial8250",
 807         .id     = PLAT8250_DEV_PLATFORM1,
 808         .dev            = {
 809                 .platform_data = ams_delta_modem_ports,
 810         },
 811 };
 812 
 813 static int __init modem_nreset_init(void)
 814 {
 815         int err;
 816 
 817         err = platform_device_register(&modem_nreset_device);
 818         if (err)
 819                 pr_err("Couldn't register the modem regulator device\n");
 820 
 821         return err;
 822 }
 823 
 824 
 825 /*
 826  * This function expects MODEM IRQ number already assigned to the port.
 827  * The MODEM device requires its RESET# pin kept high during probe.
 828  * That requirement can be fulfilled in several ways:
 829  * - with a descriptor of already functional modem_nreset regulator
 830  *   assigned to the MODEM private data,
 831  * - with the regulator not yet controlled by modem_pm function but
 832  *   already enabled by default on probe,
 833  * - before the modem_nreset regulator is probed, with the pin already
 834  *   set high explicitly.
 835  * The last one is already guaranteed by ams_delta_latch2_init() called
 836  * from machine_init.
 837  * In order to avoid taking over ttyS0 device slot, the MODEM device
 838  * should be registered after OMAP serial ports.  Since those ports
 839  * are registered at arch_initcall, this function can be called safely
 840  * at arch_initcall_sync earliest.
 841  */
 842 static int __init ams_delta_modem_init(void)
 843 {
 844         int err;
 845 
 846         if (!machine_is_ams_delta())
 847                 return -ENODEV;
 848 
 849         omap_cfg_reg(M14_1510_GPIO2);
 850 
 851         /* Initialize the modem_nreset regulator consumer before use */
 852         modem_priv.regulator = ERR_PTR(-ENODEV);
 853 
 854         err = platform_device_register(&ams_delta_modem_device);
 855 
 856         return err;
 857 }
 858 arch_initcall_sync(ams_delta_modem_init);
 859 
 860 static int __init late_init(void)
 861 {
 862         int err;
 863 
 864         err = modem_nreset_init();
 865         if (err)
 866                 return err;
 867 
 868         /*
 869          * Once the modem device is registered, the modem_nreset
 870          * regulator can be requested on behalf of that device.
 871          */
 872         modem_priv.regulator = regulator_get(&ams_delta_modem_device.dev,
 873                         "RESET#");
 874         if (IS_ERR(modem_priv.regulator)) {
 875                 err = PTR_ERR(modem_priv.regulator);
 876                 goto unregister;
 877         }
 878         return 0;
 879 
 880 unregister:
 881         platform_device_unregister(&ams_delta_modem_device);
 882         return err;
 883 }
 884 
 885 static void __init ams_delta_init_late(void)
 886 {
 887         omap1_init_late();
 888         late_init();
 889 }
 890 
 891 static void __init ams_delta_map_io(void)
 892 {
 893         omap15xx_map_io();
 894         iotable_init(ams_delta_io_desc, ARRAY_SIZE(ams_delta_io_desc));
 895 }
 896 
 897 MACHINE_START(AMS_DELTA, "Amstrad E3 (Delta)")
 898         /* Maintainer: Jonathan McDowell <noodles@earth.li> */
 899         .atag_offset    = 0x100,
 900         .map_io         = ams_delta_map_io,
 901         .init_early     = omap1_init_early,
 902         .init_irq       = omap1_init_irq,
 903         .handle_irq     = omap1_handle_irq,
 904         .init_machine   = ams_delta_init,
 905         .init_late      = ams_delta_init_late,
 906         .init_time      = omap1_timer_init,
 907         .restart        = omap1_restart,
 908 MACHINE_END
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root/arch/arm/mach-omap1/board-ams-delta.c

DEFINITIONS
