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 <mach/hardware.h>
  36 #include <asm/setup.h>
  37 #include <asm/mach-types.h>
  38 #include <asm/irq.h>
  39
  40 #include <asm/mach/arch.h>
  41 #include <asm/mach/map.h>
  42 #include <asm/mach/irq.h>
  43
  44 #include <mach/board.h>
  45 #include <mach/at91sam9_smc.h>
  46 #include <mach/system_rev.h>
  47
  48 #include "sam9_smc.h"
  49 #include "generic.h"
  50
  51 /*
  52  * board revision encoding
  53  * bit 0:
  54  *      0 => 1 sd/mmc slot
  55  *      1 => 2 sd/mmc slots connectors (board from revision C)
  56  */
  57 #define HAVE_2MMC       (1 << 0)
  58 static int inline ek_have_2mmc(void)
  59 {
  60         return machine_is_at91sam9g20ek_2mmc() || (system_rev & HAVE_2MMC);
  61 }
  62
  63
  64 static void __init ek_init_early(void)
  65 {
  66         /* Initialize processor: 18.432 MHz crystal */
  67         at91_initialize(18432000);
  68
  69         /* DBGU on ttyS0. (Rx & Tx only) */
  70         at91_register_uart(0, 0, 0);
  71
  72         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  73         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
  74                            | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
  75                            | ATMEL_UART_RI);
  76
  77         /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
  78         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
  79
  80         /* set serial console to ttyS0 (ie, DBGU) */
  81         at91_set_serial_console(0);
  82 }
  83
  84 /*
  85  * USB Host port
  86  */
  87 static struct at91_usbh_data __initdata ek_usbh_data = {
  88         .ports          = 2,
  89         .vbus_pin       = {-EINVAL, -EINVAL},
  90         .overcurrent_pin= {-EINVAL, -EINVAL},
  91 };
  92
  93 /*
  94  * USB Device port
  95  */
  96 static struct at91_udc_data __initdata ek_udc_data = {
  97         .vbus_pin       = AT91_PIN_PC5,
  98         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
  99 };
 100
 101
 102 /*
 103  * SPI devices.
 104  */
 105 static struct spi_board_info ek_spi_devices[] = {
 106 #if !(defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_AT91))
 107         {       /* DataFlash chip */
 108                 .modalias       = "mtd_dataflash",
 109                 .chip_select    = 1,
 110                 .max_speed_hz   = 15 * 1000 * 1000,
 111                 .bus_num        = 0,
 112         },
 113 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 114         {       /* DataFlash card */
 115                 .modalias       = "mtd_dataflash",
 116                 .chip_select    = 0,
 117                 .max_speed_hz   = 15 * 1000 * 1000,
 118                 .bus_num        = 0,
 119         },
 120 #endif
 121 #endif
 122 };
 123
 124
 125 /*
 126  * MACB Ethernet device
 127  */
 128 static struct macb_platform_data __initdata ek_macb_data = {
 129         .phy_irq_pin    = AT91_PIN_PA7,
 130         .is_rmii        = 1,
 131 };
 132
 133 static void __init ek_add_device_macb(void)
 134 {
 135         if (ek_have_2mmc())
 136                 ek_macb_data.phy_irq_pin = AT91_PIN_PB0;
 137
 138         at91_add_device_eth(&ek_macb_data);
 139 }
 140
 141 /*
 142  * NAND flash
 143  */
 144 static struct mtd_partition __initdata ek_nand_partition[] = {
 145         {
 146                 .name   = "Bootstrap",
 147                 .offset = 0,
 148                 .size   = 4 * SZ_1M,
 149         },
 150         {
 151                 .name   = "Partition 1",
 152                 .offset = MTDPART_OFS_NXTBLK,
 153                 .size   = 60 * SZ_1M,
 154         },
 155         {
 156                 .name   = "Partition 2",
 157                 .offset = MTDPART_OFS_NXTBLK,
 158                 .size   = MTDPART_SIZ_FULL,
 159         },
 160 };
 161
 162 /* det_pin is not connected */
 163 static struct atmel_nand_data __initdata ek_nand_data = {
 164         .ale            = 21,
 165         .cle            = 22,
 166         .rdy_pin        = AT91_PIN_PC13,
 167         .enable_pin     = AT91_PIN_PC14,
 168         .det_pin        = -EINVAL,
 169         .ecc_mode       = NAND_ECC_SOFT,
 170         .on_flash_bbt   = 1,
 171         .parts          = ek_nand_partition,
 172         .num_parts      = ARRAY_SIZE(ek_nand_partition),
 173 };
 174
 175 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 176         .ncs_read_setup         = 0,
 177         .nrd_setup              = 2,
 178         .ncs_write_setup        = 0,
 179         .nwe_setup              = 2,
 180
 181         .ncs_read_pulse         = 4,
 182         .nrd_pulse              = 4,
 183         .ncs_write_pulse        = 4,
 184         .nwe_pulse              = 4,
 185
 186         .read_cycle             = 7,
 187         .write_cycle            = 7,
 188
 189         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 190         .tdf_cycles             = 3,
 191 };
 192
 193 static void __init ek_add_device_nand(void)
 194 {
 195         ek_nand_data.bus_width_16 = board_have_nand_16bit();
 196         /* setup bus-width (8 or 16) */
 197         if (ek_nand_data.bus_width_16)
 198                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 199         else
 200                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 201
 202         /* configure chip-select 3 (NAND) */
 203         sam9_smc_configure(0, 3, &ek_nand_smc_config);
 204
 205         at91_add_device_nand(&ek_nand_data);
 206 }
 207
 208
 209 /*
 210  * MCI (SD/MMC)
 211  * wp_pin and vcc_pin are not connected
 212  */
 213 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 214 static struct mci_platform_data __initdata ek_mmc_data = {
 215         .slot[1] = {
 216                 .bus_width      = 4,
 217                 .detect_pin     = AT91_PIN_PC9,
 218                 .wp_pin         = -EINVAL,
 219         },
 220
 221 };
 222 #else
 223 static struct at91_mmc_data __initdata ek_mmc_data = {
 224         .slot_b         = 1,    /* Only one slot so use slot B */
 225         .wire4          = 1,
 226         .det_pin        = AT91_PIN_PC9,
 227         .wp_pin         = -EINVAL,
 228         .vcc_pin        = -EINVAL,
 229 };
 230 #endif
 231
 232 static void __init ek_add_device_mmc(void)
 233 {
 234 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 235         if (ek_have_2mmc()) {
 236                 ek_mmc_data.slot[0].bus_width = 4;
 237                 ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2;
 238                 ek_mmc_data.slot[0].wp_pin = -1;
 239         }
 240         at91_add_device_mci(0, &ek_mmc_data);
 241 #else
 242         at91_add_device_mmc(0, &ek_mmc_data);
 243 #endif
 244 }
 245
 246 /*
 247  * LEDs
 248  */
 249 static struct gpio_led ek_leds[] = {
 250         {       /* "bottom" led, green, userled1 to be defined */
 251                 .name                   = "ds5",
 252                 .gpio                   = AT91_PIN_PA6,
 253                 .active_low             = 1,
 254                 .default_trigger        = "none",
 255         },
 256         {       /* "power" led, yellow */
 257                 .name                   = "ds1",
 258                 .gpio                   = AT91_PIN_PA9,
 259                 .default_trigger        = "heartbeat",
 260         }
 261 };
 262
 263 static void __init ek_add_device_gpio_leds(void)
 264 {
 265         if (ek_have_2mmc()) {
 266                 ek_leds[0].gpio = AT91_PIN_PB8;
 267                 ek_leds[1].gpio = AT91_PIN_PB9;
 268         }
 269
 270         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 271 }
 272
 273 /*
 274  * GPIO Buttons
 275  */
 276 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 277 static struct gpio_keys_button ek_buttons[] = {
 278         {
 279                 .gpio           = AT91_PIN_PA30,
 280                 .code           = BTN_3,
 281                 .desc           = "Button 3",
 282                 .active_low     = 1,
 283                 .wakeup         = 1,
 284         },
 285         {
 286                 .gpio           = AT91_PIN_PA31,
 287                 .code           = BTN_4,
 288                 .desc           = "Button 4",
 289                 .active_low     = 1,
 290                 .wakeup         = 1,
 291         }
 292 };
 293
 294 static struct gpio_keys_platform_data ek_button_data = {
 295         .buttons        = ek_buttons,
 296         .nbuttons       = ARRAY_SIZE(ek_buttons),
 297 };
 298
 299 static struct platform_device ek_button_device = {
 300         .name           = "gpio-keys",
 301         .id             = -1,
 302         .num_resources  = 0,
 303         .dev            = {
 304                 .platform_data  = &ek_button_data,
 305         }
 306 };
 307
 308 static void __init ek_add_device_buttons(void)
 309 {
 310         at91_set_gpio_input(AT91_PIN_PA30, 1);  /* btn3 */
 311         at91_set_deglitch(AT91_PIN_PA30, 1);
 312         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* btn4 */
 313         at91_set_deglitch(AT91_PIN_PA31, 1);
 314
 315         platform_device_register(&ek_button_device);
 316 }
 317 #else
 318 static void __init ek_add_device_buttons(void) {}
 319 #endif
 320
 321 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
 322 static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
 323         REGULATOR_SUPPLY("AVDD", "0-001b"),
 324         REGULATOR_SUPPLY("HPVDD", "0-001b"),
 325         REGULATOR_SUPPLY("DBVDD", "0-001b"),
 326         REGULATOR_SUPPLY("DCVDD", "0-001b"),
 327 };
 328
 329 static struct regulator_init_data ek_avdd_reg_init_data = {
 330         .constraints    = {
 331                 .name   = "3V3",
 332                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 333         },
 334         .consumer_supplies = ek_audio_consumer_supplies,
 335         .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
 336 };
 337
 338 static struct fixed_voltage_config ek_vdd_pdata = {
 339         .supply_name    = "board-3V3",
 340         .microvolts     = 3300000,
 341         .gpio           = -EINVAL,
 342         .enabled_at_boot = 0,
 343         .init_data      = &ek_avdd_reg_init_data,
 344 };
 345 static struct platform_device ek_voltage_regulator = {
 346         .name           = "reg-fixed-voltage",
 347         .id             = -1,
 348         .num_resources  = 0,
 349         .dev            = {
 350                 .platform_data  = &ek_vdd_pdata,
 351         },
 352 };
 353 static void __init ek_add_regulators(void)
 354 {
 355         platform_device_register(&ek_voltage_regulator);
 356 }
 357 #else
 358 static void __init ek_add_regulators(void) {}
 359 #endif
 360
 361
 362 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 363         {
 364                 I2C_BOARD_INFO("24c512", 0x50)
 365         },
 366         {
 367                 I2C_BOARD_INFO("wm8731", 0x1b)
 368         },
 369 };
 370
 371
 372 static void __init ek_board_init(void)
 373 {
 374         /* Serial */
 375         at91_add_device_serial();
 376         /* USB Host */
 377         at91_add_device_usbh(&ek_usbh_data);
 378         /* USB Device */
 379         at91_add_device_udc(&ek_udc_data);
 380         /* SPI */
 381         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 382         /* NAND */
 383         ek_add_device_nand();
 384         /* Ethernet */
 385         ek_add_device_macb();
 386         /* Regulators */
 387         ek_add_regulators();
 388         /* MMC */
 389         ek_add_device_mmc();
 390         /* I2C */
 391         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 392         /* LEDs */
 393         ek_add_device_gpio_leds();
 394         /* Push Buttons */
 395         ek_add_device_buttons();
 396         /* PCK0 provides MCLK to the WM8731 */
 397         at91_set_B_periph(AT91_PIN_PC1, 0);
 398         /* SSC (for WM8731) */
 399         at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
 400 }
 401
 402 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
 403         /* Maintainer: Atmel */
 404         .timer          = &at91sam926x_timer,
 405         .map_io         = at91_map_io,
 406         .init_early     = ek_init_early,
 407         .init_irq       = at91_init_irq_default,
 408         .init_machine   = ek_board_init,
 409 MACHINE_END
 410
 411 MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
 412         /* Maintainer: Atmel */
 413         .timer          = &at91sam926x_timer,
 414         .map_io         = at91_map_io,
 415         .init_early     = ek_init_early,
 416         .init_irq       = at91_init_irq_default,
 417         .init_machine   = ek_board_init,
 418 MACHINE_END