arch/arm/mach-at91/board-sam9g20ek.c

   1 /*
   2  *  Copyright (C) 2005 SAN People
   3  *  Copyright (C) 2008 Atmel
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19
  20 #include <linux/types.h>
  21 #include <linux/gpio.h>
  22 #include <linux/init.h>
  23 #include <linux/mm.h>
  24 #include <linux/module.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/spi/spi.h>
  27 #include <linux/spi/at73c213.h>
  28 #include <linux/gpio_keys.h>
  29 #include <linux/input.h>
  30 #include <linux/clk.h>
  31 #include <linux/regulator/machine.h>
  32 #include <linux/regulator/fixed.h>
  33 #include <linux/regulator/consumer.h>
  34
  35 #include <linux/platform_data/at91_adc.h>
  36
  37 #include <mach/hardware.h>
  38 #include <asm/setup.h>
  39 #include <asm/mach-types.h>
  40 #include <asm/irq.h>
  41
  42 #include <asm/mach/arch.h>
  43 #include <asm/mach/map.h>
  44 #include <asm/mach/irq.h>
  45
  46 #include <mach/board.h>
  47 #include <mach/at91sam9_smc.h>
  48 #include <mach/system_rev.h>
  49
  50 #include "sam9_smc.h"
  51 #include "generic.h"
  52
  53 /*
  54  * board revision encoding
  55  * bit 0:
  56  *      0 => 1 sd/mmc slot
  57  *      1 => 2 sd/mmc slots connectors (board from revision C)
  58  */
  59 #define HAVE_2MMC       (1 << 0)
  60 static int inline ek_have_2mmc(void)
  61 {
  62         return machine_is_at91sam9g20ek_2mmc() || (system_rev & HAVE_2MMC);
  63 }
  64
  65
  66 static void __init ek_init_early(void)
  67 {
  68         /* Initialize processor: 18.432 MHz crystal */
  69         at91_initialize(18432000);
  70 }
  71
  72 /*
  73  * USB Host port
  74  */
  75 static struct at91_usbh_data __initdata ek_usbh_data = {
  76         .ports          = 2,
  77         .vbus_pin       = {-EINVAL, -EINVAL},
  78         .overcurrent_pin= {-EINVAL, -EINVAL},
  79 };
  80
  81 /*
  82  * USB Device port
  83  */
  84 static struct at91_udc_data __initdata ek_udc_data = {
  85         .vbus_pin       = AT91_PIN_PC5,
  86         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
  87 };
  88
  89
  90 /*
  91  * SPI devices.
  92  */
  93 static struct spi_board_info ek_spi_devices[] = {
  94 #if !(defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_AT91))
  95         {       /* DataFlash chip */
  96                 .modalias       = "mtd_dataflash",
  97                 .chip_select    = 1,
  98                 .max_speed_hz   = 15 * 1000 * 1000,
  99                 .bus_num        = 0,
 100         },
 101 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 102         {       /* DataFlash card */
 103                 .modalias       = "mtd_dataflash",
 104                 .chip_select    = 0,
 105                 .max_speed_hz   = 15 * 1000 * 1000,
 106                 .bus_num        = 0,
 107         },
 108 #endif
 109 #endif
 110 };
 111
 112
 113 /*
 114  * MACB Ethernet device
 115  */
 116 static struct macb_platform_data __initdata ek_macb_data = {
 117         .phy_irq_pin    = AT91_PIN_PA7,
 118         .is_rmii        = 1,
 119 };
 120
 121 static void __init ek_add_device_macb(void)
 122 {
 123         if (ek_have_2mmc())
 124                 ek_macb_data.phy_irq_pin = AT91_PIN_PB0;
 125
 126         at91_add_device_eth(&ek_macb_data);
 127 }
 128
 129 /*
 130  * NAND flash
 131  */
 132 static struct mtd_partition __initdata ek_nand_partition[] = {
 133         {
 134                 .name   = "Bootstrap",
 135                 .offset = 0,
 136                 .size   = 4 * SZ_1M,
 137         },
 138         {
 139                 .name   = "Partition 1",
 140                 .offset = MTDPART_OFS_NXTBLK,
 141                 .size   = 60 * SZ_1M,
 142         },
 143         {
 144                 .name   = "Partition 2",
 145                 .offset = MTDPART_OFS_NXTBLK,
 146                 .size   = MTDPART_SIZ_FULL,
 147         },
 148 };
 149
 150 /* det_pin is not connected */
 151 static struct atmel_nand_data __initdata ek_nand_data = {
 152         .ale            = 21,
 153         .cle            = 22,
 154         .rdy_pin        = AT91_PIN_PC13,
 155         .enable_pin     = AT91_PIN_PC14,
 156         .det_pin        = -EINVAL,
 157         .ecc_mode       = NAND_ECC_SOFT,
 158         .on_flash_bbt   = 1,
 159         .parts          = ek_nand_partition,
 160         .num_parts      = ARRAY_SIZE(ek_nand_partition),
 161 };
 162
 163 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 164         .ncs_read_setup         = 0,
 165         .nrd_setup              = 2,
 166         .ncs_write_setup        = 0,
 167         .nwe_setup              = 2,
 168
 169         .ncs_read_pulse         = 4,
 170         .nrd_pulse              = 4,
 171         .ncs_write_pulse        = 4,
 172         .nwe_pulse              = 4,
 173
 174         .read_cycle             = 7,
 175         .write_cycle            = 7,
 176
 177         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 178         .tdf_cycles             = 3,
 179 };
 180
 181 static void __init ek_add_device_nand(void)
 182 {
 183         ek_nand_data.bus_width_16 = board_have_nand_16bit();
 184         /* setup bus-width (8 or 16) */
 185         if (ek_nand_data.bus_width_16)
 186                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 187         else
 188                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 189
 190         /* configure chip-select 3 (NAND) */
 191         sam9_smc_configure(0, 3, &ek_nand_smc_config);
 192
 193         at91_add_device_nand(&ek_nand_data);
 194 }
 195
 196
 197 /*
 198  * MCI (SD/MMC)
 199  * wp_pin and vcc_pin are not connected
 200  */
 201 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 202 static struct mci_platform_data __initdata ek_mmc_data = {
 203         .slot[1] = {
 204                 .bus_width      = 4,
 205                 .detect_pin     = AT91_PIN_PC9,
 206                 .wp_pin         = -EINVAL,
 207         },
 208
 209 };
 210 #else
 211 static struct at91_mmc_data __initdata ek_mmc_data = {
 212         .slot_b         = 1,    /* Only one slot so use slot B */
 213         .wire4          = 1,
 214         .det_pin        = AT91_PIN_PC9,
 215         .wp_pin         = -EINVAL,
 216         .vcc_pin        = -EINVAL,
 217 };
 218 #endif
 219
 220 static void __init ek_add_device_mmc(void)
 221 {
 222 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 223         if (ek_have_2mmc()) {
 224                 ek_mmc_data.slot[0].bus_width = 4;
 225                 ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2;
 226                 ek_mmc_data.slot[0].wp_pin = -1;
 227         }
 228         at91_add_device_mci(0, &ek_mmc_data);
 229 #else
 230         at91_add_device_mmc(0, &ek_mmc_data);
 231 #endif
 232 }
 233
 234 /*
 235  * LEDs
 236  */
 237 static struct gpio_led ek_leds[] = {
 238         {       /* "bottom" led, green, userled1 to be defined */
 239                 .name                   = "ds5",
 240                 .gpio                   = AT91_PIN_PA6,
 241                 .active_low             = 1,
 242                 .default_trigger        = "none",
 243         },
 244         {       /* "power" led, yellow */
 245                 .name                   = "ds1",
 246                 .gpio                   = AT91_PIN_PA9,
 247                 .default_trigger        = "heartbeat",
 248         }
 249 };
 250
 251 static void __init ek_add_device_gpio_leds(void)
 252 {
 253         if (ek_have_2mmc()) {
 254                 ek_leds[0].gpio = AT91_PIN_PB8;
 255                 ek_leds[1].gpio = AT91_PIN_PB9;
 256         }
 257
 258         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 259 }
 260
 261 /*
 262  * GPIO Buttons
 263  */
 264 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 265 static struct gpio_keys_button ek_buttons[] = {
 266         {
 267                 .gpio           = AT91_PIN_PA30,
 268                 .code           = BTN_3,
 269                 .desc           = "Button 3",
 270                 .active_low     = 1,
 271                 .wakeup         = 1,
 272         },
 273         {
 274                 .gpio           = AT91_PIN_PA31,
 275                 .code           = BTN_4,
 276                 .desc           = "Button 4",
 277                 .active_low     = 1,
 278                 .wakeup         = 1,
 279         }
 280 };
 281
 282 static struct gpio_keys_platform_data ek_button_data = {
 283         .buttons        = ek_buttons,
 284         .nbuttons       = ARRAY_SIZE(ek_buttons),
 285 };
 286
 287 static struct platform_device ek_button_device = {
 288         .name           = "gpio-keys",
 289         .id             = -1,
 290         .num_resources  = 0,
 291         .dev            = {
 292                 .platform_data  = &ek_button_data,
 293         }
 294 };
 295
 296 static void __init ek_add_device_buttons(void)
 297 {
 298         at91_set_gpio_input(AT91_PIN_PA30, 1);  /* btn3 */
 299         at91_set_deglitch(AT91_PIN_PA30, 1);
 300         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* btn4 */
 301         at91_set_deglitch(AT91_PIN_PA31, 1);
 302
 303         platform_device_register(&ek_button_device);
 304 }
 305 #else
 306 static void __init ek_add_device_buttons(void) {}
 307 #endif
 308
 309 /*
 310  * ADCs
 311  */
 312
 313 static struct at91_adc_data ek_adc_data = {
 314         .channels_used = BIT(0) | BIT(1) | BIT(2) | BIT(3),
 315         .use_external_triggers = true,
 316         .vref = 3300,
 317 };
 318
 319 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
 320 static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
 321         REGULATOR_SUPPLY("AVDD", "0-001b"),
 322         REGULATOR_SUPPLY("HPVDD", "0-001b"),
 323         REGULATOR_SUPPLY("DBVDD", "0-001b"),
 324         REGULATOR_SUPPLY("DCVDD", "0-001b"),
 325 };
 326
 327 static struct regulator_init_data ek_avdd_reg_init_data = {
 328         .constraints    = {
 329                 .name   = "3V3",
 330                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 331         },
 332         .consumer_supplies = ek_audio_consumer_supplies,
 333         .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
 334 };
 335
 336 static struct fixed_voltage_config ek_vdd_pdata = {
 337         .supply_name    = "board-3V3",
 338         .microvolts     = 3300000,
 339         .gpio           = -EINVAL,
 340         .enabled_at_boot = 0,
 341         .init_data      = &ek_avdd_reg_init_data,
 342 };
 343 static struct platform_device ek_voltage_regulator = {
 344         .name           = "reg-fixed-voltage",
 345         .id             = -1,
 346         .num_resources  = 0,
 347         .dev            = {
 348                 .platform_data  = &ek_vdd_pdata,
 349         },
 350 };
 351 static void __init ek_add_regulators(void)
 352 {
 353         platform_device_register(&ek_voltage_regulator);
 354 }
 355 #else
 356 static void __init ek_add_regulators(void) {}
 357 #endif
 358
 359
 360 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 361         {
 362                 I2C_BOARD_INFO("24c512", 0x50)
 363         },
 364         {
 365                 I2C_BOARD_INFO("wm8731", 0x1b)
 366         },
 367 };
 368
 369
 370 static void __init ek_board_init(void)
 371 {
 372         /* Serial */
 373         /* DBGU on ttyS0. (Rx & Tx only) */
 374         at91_register_uart(0, 0, 0);
 375
 376         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
 377         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
 378                            | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
 379                            | ATMEL_UART_RI);
 380
 381         /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
 382         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
 383         at91_add_device_serial();
 384         /* USB Host */
 385         at91_add_device_usbh(&ek_usbh_data);
 386         /* USB Device */
 387         at91_add_device_udc(&ek_udc_data);
 388         /* SPI */
 389         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 390         /* NAND */
 391         ek_add_device_nand();
 392         /* Ethernet */
 393         ek_add_device_macb();
 394         /* Regulators */
 395         ek_add_regulators();
 396         /* MMC */
 397         ek_add_device_mmc();
 398         /* I2C */
 399         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 400         /* LEDs */
 401         ek_add_device_gpio_leds();
 402         /* Push Buttons */
 403         ek_add_device_buttons();
 404         /* ADCs */
 405         at91_add_device_adc(&ek_adc_data);
 406         /* PCK0 provides MCLK to the WM8731 */
 407         at91_set_B_periph(AT91_PIN_PC1, 0);
 408         /* SSC (for WM8731) */
 409         at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
 410 }
 411
 412 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
 413         /* Maintainer: Atmel */
 414         .timer          = &at91sam926x_timer,
 415         .map_io         = at91_map_io,
 416         .init_early     = ek_init_early,
 417         .init_irq       = at91_init_irq_default,
 418         .init_machine   = ek_board_init,
 419 MACHINE_END
 420
 421 MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
 422         /* Maintainer: Atmel */
 423         .timer          = &at91sam926x_timer,
 424         .map_io         = at91_map_io,
 425         .init_early     = ek_init_early,
 426         .init_irq       = at91_init_irq_default,
 427         .init_machine   = ek_board_init,
 428 MACHINE_END