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
  47 #include "sam9_smc.h"
  48 #include "generic.h"
  49
  50 /*
  51  * board revision encoding
  52  * bit 0:
  53  *      0 => 1 sd/mmc slot
  54  *      1 => 2 sd/mmc slots connectors (board from revision C)
  55  */
  56 #define HAVE_2MMC       (1 << 0)
  57 static int inline ek_have_2mmc(void)
  58 {
  59         return machine_is_at91sam9g20ek_2mmc() || (system_rev & HAVE_2MMC);
  60 }
  61
  62
  63 static void __init ek_map_io(void)
  64 {
  65         /* Initialize processor: 18.432 MHz crystal */
  66         at91sam9260_initialize(18432000);
  67
  68         /* DBGU on ttyS0. (Rx & Tx only) */
  69         at91_register_uart(0, 0, 0);
  70
  71         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  72         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
  73                            | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
  74                            | ATMEL_UART_RI);
  75
  76         /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
  77         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
  78
  79         /* set serial console to ttyS0 (ie, DBGU) */
  80         at91_set_serial_console(0);
  81 }
  82
  83 static void __init ek_init_irq(void)
  84 {
  85         at91sam9260_init_interrupts(NULL);
  86 }
  87
  88
  89 /*
  90  * USB Host port
  91  */
  92 static struct at91_usbh_data __initdata ek_usbh_data = {
  93         .ports          = 2,
  94 };
  95
  96 /*
  97  * USB Device port
  98  */
  99 static struct at91_udc_data __initdata ek_udc_data = {
 100         .vbus_pin       = AT91_PIN_PC5,
 101         .pullup_pin     = 0,            /* pull-up driven by UDC */
 102 };
 103
 104
 105 /*
 106  * SPI devices.
 107  */
 108 static struct spi_board_info ek_spi_devices[] = {
 109 #if !(defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_AT91))
 110         {       /* DataFlash chip */
 111                 .modalias       = "mtd_dataflash",
 112                 .chip_select    = 1,
 113                 .max_speed_hz   = 15 * 1000 * 1000,
 114                 .bus_num        = 0,
 115         },
 116 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 117         {       /* DataFlash card */
 118                 .modalias       = "mtd_dataflash",
 119                 .chip_select    = 0,
 120                 .max_speed_hz   = 15 * 1000 * 1000,
 121                 .bus_num        = 0,
 122         },
 123 #endif
 124 #endif
 125 };
 126
 127
 128 /*
 129  * MACB Ethernet device
 130  */
 131 static struct at91_eth_data __initdata ek_macb_data = {
 132         .phy_irq_pin    = AT91_PIN_PA7,
 133         .is_rmii        = 1,
 134 };
 135
 136 static void __init ek_add_device_macb(void)
 137 {
 138         if (ek_have_2mmc())
 139                 ek_macb_data.phy_irq_pin = AT91_PIN_PB0;
 140
 141         at91_add_device_eth(&ek_macb_data);
 142 }
 143
 144 /*
 145  * NAND flash
 146  */
 147 static struct mtd_partition __initdata ek_nand_partition[] = {
 148         {
 149                 .name   = "Bootstrap",
 150                 .offset = 0,
 151                 .size   = 4 * SZ_1M,
 152         },
 153         {
 154                 .name   = "Partition 1",
 155                 .offset = MTDPART_OFS_NXTBLK,
 156                 .size   = 60 * SZ_1M,
 157         },
 158         {
 159                 .name   = "Partition 2",
 160                 .offset = MTDPART_OFS_NXTBLK,
 161                 .size   = MTDPART_SIZ_FULL,
 162         },
 163 };
 164
 165 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 166 {
 167         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 168         return ek_nand_partition;
 169 }
 170
 171 /* det_pin is not connected */
 172 static struct atmel_nand_data __initdata ek_nand_data = {
 173         .ale            = 21,
 174         .cle            = 22,
 175         .rdy_pin        = AT91_PIN_PC13,
 176         .enable_pin     = AT91_PIN_PC14,
 177         .partition_info = nand_partitions,
 178 #if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
 179         .bus_width_16   = 1,
 180 #else
 181         .bus_width_16   = 0,
 182 #endif
 183 };
 184
 185 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 186         .ncs_read_setup         = 0,
 187         .nrd_setup              = 2,
 188         .ncs_write_setup        = 0,
 189         .nwe_setup              = 2,
 190
 191         .ncs_read_pulse         = 4,
 192         .nrd_pulse              = 4,
 193         .ncs_write_pulse        = 4,
 194         .nwe_pulse              = 4,
 195
 196         .read_cycle             = 7,
 197         .write_cycle            = 7,
 198
 199         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 200         .tdf_cycles             = 3,
 201 };
 202
 203 static void __init ek_add_device_nand(void)
 204 {
 205         /* setup bus-width (8 or 16) */
 206         if (ek_nand_data.bus_width_16)
 207                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 208         else
 209                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 210
 211         /* configure chip-select 3 (NAND) */
 212         sam9_smc_configure(3, &ek_nand_smc_config);
 213
 214         at91_add_device_nand(&ek_nand_data);
 215 }
 216
 217
 218 /*
 219  * MCI (SD/MMC)
 220  * wp_pin and vcc_pin are not connected
 221  */
 222 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 223 static struct mci_platform_data __initdata ek_mmc_data = {
 224         .slot[1] = {
 225                 .bus_width      = 4,
 226                 .detect_pin     = AT91_PIN_PC9,
 227         },
 228
 229 };
 230 #else
 231 static struct at91_mmc_data __initdata ek_mmc_data = {
 232         .slot_b         = 1,    /* Only one slot so use slot B */
 233         .wire4          = 1,
 234         .det_pin        = AT91_PIN_PC9,
 235 };
 236 #endif
 237
 238 static void __init ek_add_device_mmc(void)
 239 {
 240 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 241         if (ek_have_2mmc()) {
 242                 ek_mmc_data.slot[0].bus_width = 4;
 243                 ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2;
 244         }
 245         at91_add_device_mci(0, &ek_mmc_data);
 246 #else
 247         at91_add_device_mmc(0, &ek_mmc_data);
 248 #endif
 249 }
 250
 251 /*
 252  * LEDs
 253  */
 254 static struct gpio_led ek_leds[] = {
 255         {       /* "bottom" led, green, userled1 to be defined */
 256                 .name                   = "ds5",
 257                 .gpio                   = AT91_PIN_PA6,
 258                 .active_low             = 1,
 259                 .default_trigger        = "none",
 260         },
 261         {       /* "power" led, yellow */
 262                 .name                   = "ds1",
 263                 .gpio                   = AT91_PIN_PA9,
 264                 .default_trigger        = "heartbeat",
 265         }
 266 };
 267
 268 static void __init ek_add_device_gpio_leds(void)
 269 {
 270         if (ek_have_2mmc()) {
 271                 ek_leds[0].gpio = AT91_PIN_PB8;
 272                 ek_leds[1].gpio = AT91_PIN_PB9;
 273         }
 274
 275         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 276 }
 277
 278 /*
 279  * GPIO Buttons
 280  */
 281 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 282 static struct gpio_keys_button ek_buttons[] = {
 283         {
 284                 .gpio           = AT91_PIN_PA30,
 285                 .code           = BTN_3,
 286                 .desc           = "Button 3",
 287                 .active_low     = 1,
 288                 .wakeup         = 1,
 289         },
 290         {
 291                 .gpio           = AT91_PIN_PA31,
 292                 .code           = BTN_4,
 293                 .desc           = "Button 4",
 294                 .active_low     = 1,
 295                 .wakeup         = 1,
 296         }
 297 };
 298
 299 static struct gpio_keys_platform_data ek_button_data = {
 300         .buttons        = ek_buttons,
 301         .nbuttons       = ARRAY_SIZE(ek_buttons),
 302 };
 303
 304 static struct platform_device ek_button_device = {
 305         .name           = "gpio-keys",
 306         .id             = -1,
 307         .num_resources  = 0,
 308         .dev            = {
 309                 .platform_data  = &ek_button_data,
 310         }
 311 };
 312
 313 static void __init ek_add_device_buttons(void)
 314 {
 315         at91_set_gpio_input(AT91_PIN_PA30, 1);  /* btn3 */
 316         at91_set_deglitch(AT91_PIN_PA30, 1);
 317         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* btn4 */
 318         at91_set_deglitch(AT91_PIN_PA31, 1);
 319
 320         platform_device_register(&ek_button_device);
 321 }
 322 #else
 323 static void __init ek_add_device_buttons(void) {}
 324 #endif
 325
 326 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
 327 static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
 328         REGULATOR_SUPPLY("AVDD", "0-001b"),
 329         REGULATOR_SUPPLY("HPVDD", "0-001b"),
 330         REGULATOR_SUPPLY("DBVDD", "0-001b"),
 331         REGULATOR_SUPPLY("DCVDD", "0-001b"),
 332 };
 333
 334 static struct regulator_init_data ek_avdd_reg_init_data = {
 335         .constraints    = {
 336                 .name   = "3V3",
 337                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 338         },
 339         .consumer_supplies = ek_audio_consumer_supplies,
 340         .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
 341 };
 342
 343 static struct fixed_voltage_config ek_vdd_pdata = {
 344         .supply_name    = "board-3V3",
 345         .microvolts     = 3300000,
 346         .gpio           = -EINVAL,
 347         .enabled_at_boot = 0,
 348         .init_data      = &ek_avdd_reg_init_data,
 349 };
 350 static struct platform_device ek_voltage_regulator = {
 351         .name           = "reg-fixed-voltage",
 352         .id             = -1,
 353         .num_resources  = 0,
 354         .dev            = {
 355                 .platform_data  = &ek_vdd_pdata,
 356         },
 357 };
 358 static void __init ek_add_regulators(void)
 359 {
 360         platform_device_register(&ek_voltage_regulator);
 361 }
 362 #else
 363 static void __init ek_add_regulators(void) {}
 364 #endif
 365
 366
 367 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 368         {
 369                 I2C_BOARD_INFO("24c512", 0x50)
 370         },
 371         {
 372                 I2C_BOARD_INFO("wm8731", 0x1b)
 373         },
 374 };
 375
 376
 377 static void __init ek_board_init(void)
 378 {
 379         /* Serial */
 380         at91_add_device_serial();
 381         /* USB Host */
 382         at91_add_device_usbh(&ek_usbh_data);
 383         /* USB Device */
 384         at91_add_device_udc(&ek_udc_data);
 385         /* SPI */
 386         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 387         /* NAND */
 388         ek_add_device_nand();
 389         /* Ethernet */
 390         ek_add_device_macb();
 391         /* Regulators */
 392         ek_add_regulators();
 393         /* MMC */
 394         ek_add_device_mmc();
 395         /* I2C */
 396         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 397         /* LEDs */
 398         ek_add_device_gpio_leds();
 399         /* Push Buttons */
 400         ek_add_device_buttons();
 401         /* PCK0 provides MCLK to the WM8731 */
 402         at91_set_B_periph(AT91_PIN_PC1, 0);
 403         /* SSC (for WM8731) */
 404         at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
 405 }
 406
 407 MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
 408         /* Maintainer: Atmel */
 409         .boot_params    = AT91_SDRAM_BASE + 0x100,
 410         .timer          = &at91sam926x_timer,
 411         .map_io         = ek_map_io,
 412         .init_irq       = ek_init_irq,
 413         .init_machine   = ek_board_init,
 414 MACHINE_END
 415
 416 MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
 417         /* Maintainer: Atmel */
 418         .boot_params    = AT91_SDRAM_BASE + 0x100,
 419         .timer          = &at91sam926x_timer,
 420         .map_io         = ek_map_io,
 421         .init_irq       = ek_init_irq,
 422         .init_machine   = ek_board_init,
 423 MACHINE_END