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/init.h>
  22 #include <linux/mm.h>
  23 #include <linux/module.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/spi/spi.h>
  26 #include <linux/spi/at73c213.h>
  27 #include <linux/gpio_keys.h>
  28 #include <linux/input.h>
  29 #include <linux/clk.h>
  30 #include <linux/regulator/machine.h>
  31 #include <linux/regulator/fixed.h>
  32 #include <linux/regulator/consumer.h>
  33
  34 #include <mach/hardware.h>
  35 #include <asm/setup.h>
  36 #include <asm/mach-types.h>
  37 #include <asm/irq.h>
  38
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/map.h>
  41 #include <asm/mach/irq.h>
  42
  43 #include <mach/board.h>
  44 #include <mach/gpio.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         at91sam9260_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 static void __init ek_init_irq(void)
  85 {
  86         at91sam9260_init_interrupts(NULL);
  87 }
  88
  89
  90 /*
  91  * USB Host port
  92  */
  93 static struct at91_usbh_data __initdata ek_usbh_data = {
  94         .ports          = 2,
  95 };
  96
  97 /*
  98  * USB Device port
  99  */
 100 static struct at91_udc_data __initdata ek_udc_data = {
 101         .vbus_pin       = AT91_PIN_PC5,
 102         .pullup_pin     = 0,            /* pull-up driven by UDC */
 103 };
 104
 105
 106 /*
 107  * SPI devices.
 108  */
 109 static struct spi_board_info ek_spi_devices[] = {
 110 #if !(defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_AT91))
 111         {       /* DataFlash chip */
 112                 .modalias       = "mtd_dataflash",
 113                 .chip_select    = 1,
 114                 .max_speed_hz   = 15 * 1000 * 1000,
 115                 .bus_num        = 0,
 116         },
 117 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 118         {       /* DataFlash card */
 119                 .modalias       = "mtd_dataflash",
 120                 .chip_select    = 0,
 121                 .max_speed_hz   = 15 * 1000 * 1000,
 122                 .bus_num        = 0,
 123         },
 124 #endif
 125 #endif
 126 };
 127
 128
 129 /*
 130  * MACB Ethernet device
 131  */
 132 static struct at91_eth_data __initdata ek_macb_data = {
 133         .phy_irq_pin    = AT91_PIN_PA7,
 134         .is_rmii        = 1,
 135 };
 136
 137 static void __init ek_add_device_macb(void)
 138 {
 139         if (ek_have_2mmc())
 140                 ek_macb_data.phy_irq_pin = AT91_PIN_PB0;
 141
 142         at91_add_device_eth(&ek_macb_data);
 143 }
 144
 145 /*
 146  * NAND flash
 147  */
 148 static struct mtd_partition __initdata ek_nand_partition[] = {
 149         {
 150                 .name   = "Bootstrap",
 151                 .offset = 0,
 152                 .size   = 4 * SZ_1M,
 153         },
 154         {
 155                 .name   = "Partition 1",
 156                 .offset = MTDPART_OFS_NXTBLK,
 157                 .size   = 60 * SZ_1M,
 158         },
 159         {
 160                 .name   = "Partition 2",
 161                 .offset = MTDPART_OFS_NXTBLK,
 162                 .size   = MTDPART_SIZ_FULL,
 163         },
 164 };
 165
 166 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 167 {
 168         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 169         return ek_nand_partition;
 170 }
 171
 172 /* det_pin is not connected */
 173 static struct atmel_nand_data __initdata ek_nand_data = {
 174         .ale            = 21,
 175         .cle            = 22,
 176         .rdy_pin        = AT91_PIN_PC13,
 177         .enable_pin     = AT91_PIN_PC14,
 178         .partition_info = nand_partitions,
 179 };
 180
 181 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 182         .ncs_read_setup         = 0,
 183         .nrd_setup              = 2,
 184         .ncs_write_setup        = 0,
 185         .nwe_setup              = 2,
 186
 187         .ncs_read_pulse         = 4,
 188         .nrd_pulse              = 4,
 189         .ncs_write_pulse        = 4,
 190         .nwe_pulse              = 4,
 191
 192         .read_cycle             = 7,
 193         .write_cycle            = 7,
 194
 195         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 196         .tdf_cycles             = 3,
 197 };
 198
 199 static void __init ek_add_device_nand(void)
 200 {
 201         ek_nand_data.bus_width_16 = board_have_nand_16bit();
 202         /* setup bus-width (8 or 16) */
 203         if (ek_nand_data.bus_width_16)
 204                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 205         else
 206                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 207
 208         /* configure chip-select 3 (NAND) */
 209         sam9_smc_configure(3, &ek_nand_smc_config);
 210
 211         at91_add_device_nand(&ek_nand_data);
 212 }
 213
 214
 215 /*
 216  * MCI (SD/MMC)
 217  * wp_pin and vcc_pin are not connected
 218  */
 219 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 220 static struct mci_platform_data __initdata ek_mmc_data = {
 221         .slot[1] = {
 222                 .bus_width      = 4,
 223                 .detect_pin     = AT91_PIN_PC9,
 224         },
 225
 226 };
 227 #else
 228 static struct at91_mmc_data __initdata ek_mmc_data = {
 229         .slot_b         = 1,    /* Only one slot so use slot B */
 230         .wire4          = 1,
 231         .det_pin        = AT91_PIN_PC9,
 232 };
 233 #endif
 234
 235 static void __init ek_add_device_mmc(void)
 236 {
 237 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 238         if (ek_have_2mmc()) {
 239                 ek_mmc_data.slot[0].bus_width = 4;
 240                 ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2;
 241         }
 242         at91_add_device_mci(0, &ek_mmc_data);
 243 #else
 244         at91_add_device_mmc(0, &ek_mmc_data);
 245 #endif
 246 }
 247
 248 /*
 249  * LEDs
 250  */
 251 static struct gpio_led ek_leds[] = {
 252         {       /* "bottom" led, green, userled1 to be defined */
 253                 .name                   = "ds5",
 254                 .gpio                   = AT91_PIN_PA6,
 255                 .active_low             = 1,
 256                 .default_trigger        = "none",
 257         },
 258         {       /* "power" led, yellow */
 259                 .name                   = "ds1",
 260                 .gpio                   = AT91_PIN_PA9,
 261                 .default_trigger        = "heartbeat",
 262         }
 263 };
 264
 265 static void __init ek_add_device_gpio_leds(void)
 266 {
 267         if (ek_have_2mmc()) {
 268                 ek_leds[0].gpio = AT91_PIN_PB8;
 269                 ek_leds[1].gpio = AT91_PIN_PB9;
 270         }
 271
 272         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 273 }
 274
 275 /*
 276  * GPIO Buttons
 277  */
 278 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 279 static struct gpio_keys_button ek_buttons[] = {
 280         {
 281                 .gpio           = AT91_PIN_PA30,
 282                 .code           = BTN_3,
 283                 .desc           = "Button 3",
 284                 .active_low     = 1,
 285                 .wakeup         = 1,
 286         },
 287         {
 288                 .gpio           = AT91_PIN_PA31,
 289                 .code           = BTN_4,
 290                 .desc           = "Button 4",
 291                 .active_low     = 1,
 292                 .wakeup         = 1,
 293         }
 294 };
 295
 296 static struct gpio_keys_platform_data ek_button_data = {
 297         .buttons        = ek_buttons,
 298         .nbuttons       = ARRAY_SIZE(ek_buttons),
 299 };
 300
 301 static struct platform_device ek_button_device = {
 302         .name           = "gpio-keys",
 303         .id             = -1,
 304         .num_resources  = 0,
 305         .dev            = {
 306                 .platform_data  = &ek_button_data,
 307         }
 308 };
 309
 310 static void __init ek_add_device_buttons(void)
 311 {
 312         at91_set_gpio_input(AT91_PIN_PA30, 1);  /* btn3 */
 313         at91_set_deglitch(AT91_PIN_PA30, 1);
 314         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* btn4 */
 315         at91_set_deglitch(AT91_PIN_PA31, 1);
 316
 317         platform_device_register(&ek_button_device);
 318 }
 319 #else
 320 static void __init ek_add_device_buttons(void) {}
 321 #endif
 322
 323 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
 324 static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
 325         REGULATOR_SUPPLY("AVDD", "0-001b"),
 326         REGULATOR_SUPPLY("HPVDD", "0-001b"),
 327         REGULATOR_SUPPLY("DBVDD", "0-001b"),
 328         REGULATOR_SUPPLY("DCVDD", "0-001b"),
 329 };
 330
 331 static struct regulator_init_data ek_avdd_reg_init_data = {
 332         .constraints    = {
 333                 .name   = "3V3",
 334                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 335         },
 336         .consumer_supplies = ek_audio_consumer_supplies,
 337         .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
 338 };
 339
 340 static struct fixed_voltage_config ek_vdd_pdata = {
 341         .supply_name    = "board-3V3",
 342         .microvolts     = 3300000,
 343         .gpio           = -EINVAL,
 344         .enabled_at_boot = 0,
 345         .init_data      = &ek_avdd_reg_init_data,
 346 };
 347 static struct platform_device ek_voltage_regulator = {
 348         .name           = "reg-fixed-voltage",
 349         .id             = -1,
 350         .num_resources  = 0,
 351         .dev            = {
 352                 .platform_data  = &ek_vdd_pdata,
 353         },
 354 };
 355 static void __init ek_add_regulators(void)
 356 {
 357         platform_device_register(&ek_voltage_regulator);
 358 }
 359 #else
 360 static void __init ek_add_regulators(void) {}
 361 #endif
 362
 363
 364 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 365         {
 366                 I2C_BOARD_INFO("24c512", 0x50)
 367         },
 368         {
 369                 I2C_BOARD_INFO("wm8731", 0x1b)
 370         },
 371 };
 372
 373
 374 static void __init ek_board_init(void)
 375 {
 376         /* Serial */
 377         at91_add_device_serial();
 378         /* USB Host */
 379         at91_add_device_usbh(&ek_usbh_data);
 380         /* USB Device */
 381         at91_add_device_udc(&ek_udc_data);
 382         /* SPI */
 383         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 384         /* NAND */
 385         ek_add_device_nand();
 386         /* Ethernet */
 387         ek_add_device_macb();
 388         /* Regulators */
 389         ek_add_regulators();
 390         /* MMC */
 391         ek_add_device_mmc();
 392         /* I2C */
 393         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 394         /* LEDs */
 395         ek_add_device_gpio_leds();
 396         /* Push Buttons */
 397         ek_add_device_buttons();
 398         /* PCK0 provides MCLK to the WM8731 */
 399         at91_set_B_periph(AT91_PIN_PC1, 0);
 400         /* SSC (for WM8731) */
 401         at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
 402 }
 403
 404 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
 405         /* Maintainer: Atmel */
 406         .timer          = &at91sam926x_timer,
 407         .map_io         = at91sam9260_map_io,
 408         .init_early     = ek_init_early,
 409         .init_irq       = ek_init_irq,
 410         .init_machine   = ek_board_init,
 411 MACHINE_END
 412
 413 MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
 414         /* Maintainer: Atmel */
 415         .timer          = &at91sam926x_timer,
 416         .map_io         = at91sam9260_map_io,
 417         .init_early     = ek_init_early,
 418         .init_irq       = ek_init_irq,
 419         .init_machine   = ek_board_init,
 420 MACHINE_END