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         .parts          = ek_nand_partition,
 170         .num_parts      = ARRAY_SIZE(ek_nand_partition),
 171 };
 172
 173 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 174         .ncs_read_setup         = 0,
 175         .nrd_setup              = 2,
 176         .ncs_write_setup        = 0,
 177         .nwe_setup              = 2,
 178
 179         .ncs_read_pulse         = 4,
 180         .nrd_pulse              = 4,
 181         .ncs_write_pulse        = 4,
 182         .nwe_pulse              = 4,
 183
 184         .read_cycle             = 7,
 185         .write_cycle            = 7,
 186
 187         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 188         .tdf_cycles             = 3,
 189 };
 190
 191 static void __init ek_add_device_nand(void)
 192 {
 193         ek_nand_data.bus_width_16 = board_have_nand_16bit();
 194         /* setup bus-width (8 or 16) */
 195         if (ek_nand_data.bus_width_16)
 196                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 197         else
 198                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 199
 200         /* configure chip-select 3 (NAND) */
 201         sam9_smc_configure(0, 3, &ek_nand_smc_config);
 202
 203         at91_add_device_nand(&ek_nand_data);
 204 }
 205
 206
 207 /*
 208  * MCI (SD/MMC)
 209  * wp_pin and vcc_pin are not connected
 210  */
 211 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 212 static struct mci_platform_data __initdata ek_mmc_data = {
 213         .slot[1] = {
 214                 .bus_width      = 4,
 215                 .detect_pin     = AT91_PIN_PC9,
 216                 .wp_pin         = -EINVAL,
 217         },
 218
 219 };
 220 #else
 221 static struct at91_mmc_data __initdata ek_mmc_data = {
 222         .slot_b         = 1,    /* Only one slot so use slot B */
 223         .wire4          = 1,
 224         .det_pin        = AT91_PIN_PC9,
 225         .wp_pin         = -EINVAL,
 226         .vcc_pin        = -EINVAL,
 227 };
 228 #endif
 229
 230 static void __init ek_add_device_mmc(void)
 231 {
 232 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 233         if (ek_have_2mmc()) {
 234                 ek_mmc_data.slot[0].bus_width = 4;
 235                 ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2;
 236                 ek_mmc_data.slot[0].wp_pin = -1;
 237         }
 238         at91_add_device_mci(0, &ek_mmc_data);
 239 #else
 240         at91_add_device_mmc(0, &ek_mmc_data);
 241 #endif
 242 }
 243
 244 /*
 245  * LEDs
 246  */
 247 static struct gpio_led ek_leds[] = {
 248         {       /* "bottom" led, green, userled1 to be defined */
 249                 .name                   = "ds5",
 250                 .gpio                   = AT91_PIN_PA6,
 251                 .active_low             = 1,
 252                 .default_trigger        = "none",
 253         },
 254         {       /* "power" led, yellow */
 255                 .name                   = "ds1",
 256                 .gpio                   = AT91_PIN_PA9,
 257                 .default_trigger        = "heartbeat",
 258         }
 259 };
 260
 261 static void __init ek_add_device_gpio_leds(void)
 262 {
 263         if (ek_have_2mmc()) {
 264                 ek_leds[0].gpio = AT91_PIN_PB8;
 265                 ek_leds[1].gpio = AT91_PIN_PB9;
 266         }
 267
 268         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 269 }
 270
 271 /*
 272  * GPIO Buttons
 273  */
 274 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 275 static struct gpio_keys_button ek_buttons[] = {
 276         {
 277                 .gpio           = AT91_PIN_PA30,
 278                 .code           = BTN_3,
 279                 .desc           = "Button 3",
 280                 .active_low     = 1,
 281                 .wakeup         = 1,
 282         },
 283         {
 284                 .gpio           = AT91_PIN_PA31,
 285                 .code           = BTN_4,
 286                 .desc           = "Button 4",
 287                 .active_low     = 1,
 288                 .wakeup         = 1,
 289         }
 290 };
 291
 292 static struct gpio_keys_platform_data ek_button_data = {
 293         .buttons        = ek_buttons,
 294         .nbuttons       = ARRAY_SIZE(ek_buttons),
 295 };
 296
 297 static struct platform_device ek_button_device = {
 298         .name           = "gpio-keys",
 299         .id             = -1,
 300         .num_resources  = 0,
 301         .dev            = {
 302                 .platform_data  = &ek_button_data,
 303         }
 304 };
 305
 306 static void __init ek_add_device_buttons(void)
 307 {
 308         at91_set_gpio_input(AT91_PIN_PA30, 1);  /* btn3 */
 309         at91_set_deglitch(AT91_PIN_PA30, 1);
 310         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* btn4 */
 311         at91_set_deglitch(AT91_PIN_PA31, 1);
 312
 313         platform_device_register(&ek_button_device);
 314 }
 315 #else
 316 static void __init ek_add_device_buttons(void) {}
 317 #endif
 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         at91_add_device_serial();
 374         /* USB Host */
 375         at91_add_device_usbh(&ek_usbh_data);
 376         /* USB Device */
 377         at91_add_device_udc(&ek_udc_data);
 378         /* SPI */
 379         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 380         /* NAND */
 381         ek_add_device_nand();
 382         /* Ethernet */
 383         ek_add_device_macb();
 384         /* Regulators */
 385         ek_add_regulators();
 386         /* MMC */
 387         ek_add_device_mmc();
 388         /* I2C */
 389         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 390         /* LEDs */
 391         ek_add_device_gpio_leds();
 392         /* Push Buttons */
 393         ek_add_device_buttons();
 394         /* PCK0 provides MCLK to the WM8731 */
 395         at91_set_B_periph(AT91_PIN_PC1, 0);
 396         /* SSC (for WM8731) */
 397         at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
 398 }
 399
 400 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
 401         /* Maintainer: Atmel */
 402         .timer          = &at91sam926x_timer,
 403         .map_io         = at91_map_io,
 404         .init_early     = ek_init_early,
 405         .init_irq       = at91_init_irq_default,
 406         .init_machine   = ek_board_init,
 407 MACHINE_END
 408
 409 MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
 410         /* Maintainer: Atmel */
 411         .timer          = &at91sam926x_timer,
 412         .map_io         = at91_map_io,
 413         .init_early     = ek_init_early,
 414         .init_irq       = at91_init_irq_default,
 415         .init_machine   = ek_board_init,
 416 MACHINE_END