LXR linux/arch/arm/mach-at91/board-sam9260ek.c

   1/*
   2 * linux/arch/arm/mach-at91/board-sam9260ek.c
   3 *
   4 *  Copyright (C) 2005 SAN People
   5 *  Copyright (C) 2006 Atmel
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation; either version 2 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20 */
  21
  22#include <linux/types.h>
  23#include <linux/init.h>
  24#include <linux/mm.h>
  25#include <linux/module.h>
  26#include <linux/platform_device.h>
  27#include <linux/spi/spi.h>
  28#include <linux/spi/at73c213.h>
  29#include <linux/clk.h>
  30#include <linux/i2c/at24.h>
  31#include <linux/gpio_keys.h>
  32#include <linux/input.h>
  33
  34#include <asm/setup.h>
  35#include <asm/mach-types.h>
  36#include <asm/irq.h>
  37
  38#include <asm/mach/arch.h>
  39#include <asm/mach/map.h>
  40#include <asm/mach/irq.h>
  41
  42#include <mach/hardware.h>
  43#include <mach/board.h>
  44#include <mach/gpio.h>
  45#include <mach/at91sam9_smc.h>
  46#include <mach/at91_shdwc.h>
  47
  48#include "sam9_smc.h"
  49#include "generic.h"
  50
  51
  52static void __init ek_map_io(void)
  53{
  54        /* Initialize processor: 18.432 MHz crystal */
  55        at91sam9260_initialize(18432000);
  56
  57        /* DBGU on ttyS0. (Rx & Tx only) */
  58        at91_register_uart(0, 0, 0);
  59
  60        /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  61        at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
  62                           | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
  63                           | ATMEL_UART_RI);
  64
  65        /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
  66        at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
  67
  68        /* set serial console to ttyS0 (ie, DBGU) */
  69        at91_set_serial_console(0);
  70}
  71
  72static void __init ek_init_irq(void)
  73{
  74        at91sam9260_init_interrupts(NULL);
  75}
  76
  77
  78/*
  79 * USB Host port
  80 */
  81static struct at91_usbh_data __initdata ek_usbh_data = {
  82        .ports          = 2,
  83};
  84
  85/*
  86 * USB Device port
  87 */
  88static struct at91_udc_data __initdata ek_udc_data = {
  89        .vbus_pin       = AT91_PIN_PC5,
  90        .pullup_pin     = 0,            /* pull-up driven by UDC */
  91};
  92
  93
  94/*
  95 * Audio
  96 */
  97static struct at73c213_board_info at73c213_data = {
  98        .ssc_id         = 0,
  99        .shortname      = "AT91SAM9260-EK external DAC",
 100};
 101
 102#if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
 103static void __init at73c213_set_clk(struct at73c213_board_info *info)
 104{
 105        struct clk *pck0;
 106        struct clk *plla;
 107
 108        pck0 = clk_get(NULL, "pck0");
 109        plla = clk_get(NULL, "plla");
 110
 111        /* AT73C213 MCK Clock */
 112        at91_set_B_periph(AT91_PIN_PC1, 0);     /* PCK0 */
 113
 114        clk_set_parent(pck0, plla);
 115        clk_put(plla);
 116
 117        info->dac_clk = pck0;
 118}
 119#else
 120static void __init at73c213_set_clk(struct at73c213_board_info *info) {}
 121#endif
 122
 123/*
 124 * SPI devices.
 125 */
 126static struct spi_board_info ek_spi_devices[] = {
 127#if !defined(CONFIG_MMC_AT91)
 128        {       /* DataFlash chip */
 129                .modalias       = "mtd_dataflash",
 130                .chip_select    = 1,
 131                .max_speed_hz   = 15 * 1000 * 1000,
 132                .bus_num        = 0,
 133        },
 134#if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 135        {       /* DataFlash card */
 136                .modalias       = "mtd_dataflash",
 137                .chip_select    = 0,
 138                .max_speed_hz   = 15 * 1000 * 1000,
 139                .bus_num        = 0,
 140        },
 141#endif
 142#endif
 143#if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
 144        {       /* AT73C213 DAC */
 145                .modalias       = "at73c213",
 146                .chip_select    = 0,
 147                .max_speed_hz   = 10 * 1000 * 1000,
 148                .bus_num        = 1,
 149                .mode           = SPI_MODE_1,
 150                .platform_data  = &at73c213_data,
 151        },
 152#endif
 153};
 154
 155
 156/*
 157 * MACB Ethernet device
 158 */
 159static struct at91_eth_data __initdata ek_macb_data = {
 160        .phy_irq_pin    = AT91_PIN_PA7,
 161        .is_rmii        = 1,
 162};
 163
 164
 165/*
 166 * NAND flash
 167 */
 168static struct mtd_partition __initdata ek_nand_partition[] = {
 169        {
 170                .name   = "Partition 1",
 171                .offset = 0,
 172                .size   = SZ_256K,
 173        },
 174        {
 175                .name   = "Partition 2",
 176                .offset = MTDPART_OFS_NXTBLK,
 177                .size   = MTDPART_SIZ_FULL,
 178        },
 179};
 180
 181static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 182{
 183        *num_partitions = ARRAY_SIZE(ek_nand_partition);
 184        return ek_nand_partition;
 185}
 186
 187static struct atmel_nand_data __initdata ek_nand_data = {
 188        .ale            = 21,
 189        .cle            = 22,
 190//      .det_pin        = ... not connected
 191        .rdy_pin        = AT91_PIN_PC13,
 192        .enable_pin     = AT91_PIN_PC14,
 193        .partition_info = nand_partitions,
 194#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
 195        .bus_width_16   = 1,
 196#else
 197        .bus_width_16   = 0,
 198#endif
 199};
 200
 201static struct sam9_smc_config __initdata ek_nand_smc_config = {
 202        .ncs_read_setup         = 0,
 203        .nrd_setup              = 1,
 204        .ncs_write_setup        = 0,
 205        .nwe_setup              = 1,
 206
 207        .ncs_read_pulse         = 3,
 208        .nrd_pulse              = 3,
 209        .ncs_write_pulse        = 3,
 210        .nwe_pulse              = 3,
 211
 212        .read_cycle             = 5,
 213        .write_cycle            = 5,
 214
 215        .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 216        .tdf_cycles             = 2,
 217};
 218
 219static void __init ek_add_device_nand(void)
 220{
 221        /* setup bus-width (8 or 16) */
 222        if (ek_nand_data.bus_width_16)
 223                ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 224        else
 225                ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 226
 227        /* configure chip-select 3 (NAND) */
 228        sam9_smc_configure(3, &ek_nand_smc_config);
 229
 230        at91_add_device_nand(&ek_nand_data);
 231}
 232
 233
 234/*
 235 * MCI (SD/MMC)
 236 */
 237static struct at91_mmc_data __initdata ek_mmc_data = {
 238        .slot_b         = 1,
 239        .wire4          = 1,
 240//      .det_pin        = ... not connected
 241//      .wp_pin         = ... not connected
 242//      .vcc_pin        = ... not connected
 243};
 244
 245
 246/*
 247 * LEDs
 248 */
 249static 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/*
 264 * I2C devices
 265 */
 266static struct at24_platform_data at24c512 = {
 267        .byte_len       = SZ_512K / 8,
 268        .page_size      = 128,
 269        .flags          = AT24_FLAG_ADDR16,
 270};
 271
 272static struct i2c_board_info __initdata ek_i2c_devices[] = {
 273        {
 274                I2C_BOARD_INFO("24c512", 0x50),
 275                .platform_data = &at24c512,
 276        },
 277        /* more devices can be added using expansion connectors */
 278};
 279
 280
 281/*
 282 * GPIO Buttons
 283 */
 284#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 285static struct gpio_keys_button ek_buttons[] = {
 286        {
 287                .gpio           = AT91_PIN_PA30,
 288                .code           = BTN_3,
 289                .desc           = "Button 3",
 290                .active_low     = 1,
 291                .wakeup         = 1,
 292        },
 293        {
 294                .gpio           = AT91_PIN_PA31,
 295                .code           = BTN_4,
 296                .desc           = "Button 4",
 297                .active_low     = 1,
 298                .wakeup         = 1,
 299        }
 300};
 301
 302static struct gpio_keys_platform_data ek_button_data = {
 303        .buttons        = ek_buttons,
 304        .nbuttons       = ARRAY_SIZE(ek_buttons),
 305};
 306
 307static struct platform_device ek_button_device = {
 308        .name           = "gpio-keys",
 309        .id             = -1,
 310        .num_resources  = 0,
 311        .dev            = {
 312                .platform_data  = &ek_button_data,
 313        }
 314};
 315
 316static void __init ek_add_device_buttons(void)
 317{
 318        at91_set_gpio_input(AT91_PIN_PA30, 1);  /* btn3 */
 319        at91_set_deglitch(AT91_PIN_PA30, 1);
 320        at91_set_gpio_input(AT91_PIN_PA31, 1);  /* btn4 */
 321        at91_set_deglitch(AT91_PIN_PA31, 1);
 322
 323        platform_device_register(&ek_button_device);
 324}
 325#else
 326static void __init ek_add_device_buttons(void) {}
 327#endif
 328
 329
 330static void __init ek_board_init(void)
 331{
 332        /* Serial */
 333        at91_add_device_serial();
 334        /* USB Host */
 335        at91_add_device_usbh(&ek_usbh_data);
 336        /* USB Device */
 337        at91_add_device_udc(&ek_udc_data);
 338        /* SPI */
 339        at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 340        /* NAND */
 341        ek_add_device_nand();
 342        /* Ethernet */
 343        at91_add_device_eth(&ek_macb_data);
 344        /* MMC */
 345        at91_add_device_mmc(0, &ek_mmc_data);
 346        /* I2C */
 347        at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 348        /* SSC (to AT73C213) */
 349        at73c213_set_clk(&at73c213_data);
 350        at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
 351        /* LEDs */
 352        at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 353        /* Push Buttons */
 354        ek_add_device_buttons();
 355}
 356
 357MACHINE_START(AT91SAM9260EK, "Atmel AT91SAM9260-EK")
 358        /* Maintainer: Atmel */
 359        .phys_io        = AT91_BASE_SYS,
 360        .io_pg_offst    = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
 361        .boot_params    = AT91_SDRAM_BASE + 0x100,
 362        .timer          = &at91sam926x_timer,
 363        .map_io         = ek_map_io,
 364        .init_irq       = ek_init_irq,
 365        .init_machine   = ek_board_init,
 366MACHINE_END
 367