linux/arch/arm/mach-at91/board-sam9g20ek.c
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   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)
  57static int inline ek_have_2mmc(void)
  58{
  59        return machine_is_at91sam9g20ek_2mmc() || (system_rev & HAVE_2MMC);
  60}
  61
  62
  63static 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
  83static void __init ek_init_irq(void)
  84{
  85        at91sam9260_init_interrupts(NULL);
  86}
  87
  88
  89/*
  90 * USB Host port
  91 */
  92static struct at91_usbh_data __initdata ek_usbh_data = {
  93        .ports          = 2,
  94};
  95
  96/*
  97 * USB Device port
  98 */
  99static 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 */
 108static 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 */
 131static struct at91_eth_data __initdata ek_macb_data = {
 132        .phy_irq_pin    = AT91_PIN_PA7,
 133        .is_rmii        = 1,
 134};
 135
 136static 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 */
 147static 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
 165static 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 */
 172static 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
 185static 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
 203static 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)
 223static 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
 231static 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
 238static 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 */
 254static 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
 268static 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)
 282static 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
 299static struct gpio_keys_platform_data ek_button_data = {
 300        .buttons        = ek_buttons,
 301        .nbuttons       = ARRAY_SIZE(ek_buttons),
 302};
 303
 304static 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
 313static 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
 323static void __init ek_add_device_buttons(void) {}
 324#endif
 325
 326#if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
 327static 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
 334static 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
 343static 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};
 350static 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};
 358static void __init ek_add_regulators(void)
 359{
 360        platform_device_register(&ek_voltage_regulator);
 361}
 362#else
 363static void __init ek_add_regulators(void) {}
 364#endif
 365
 366
 367static 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
 377static 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
 407MACHINE_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,
 414MACHINE_END
 415
 416MACHINE_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,
 423MACHINE_END
 424