release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-at91/board-sam9g20ek-2slot-mmc.c

   1 /*
   2  *  Copyright (C) 2005 SAN People
   3  *  Copyright (C) 2008 Atmel
   4  *  Copyright (C) 2009 Rob Emanuele
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <linux/types.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/clk.h>
  29 #include <linux/regulator/machine.h>
  30 #include <linux/regulator/fixed.h>
  31 #include <linux/regulator/consumer.h>
  32
  33 #include <mach/hardware.h>
  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/board.h>
  43 #include <mach/gpio.h>
  44 #include <mach/at91sam9_smc.h>
  45
  46 #include "sam9_smc.h"
  47 #include "generic.h"
  48
  49
  50 static void __init ek_map_io(void)
  51 {
  52         /* Initialize processor: 18.432 MHz crystal */
  53         at91sam9260_initialize(18432000);
  54
  55         /* DGBU on ttyS0. (Rx & Tx only) */
  56         at91_register_uart(0, 0, 0);
  57
  58         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  59         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
  60                            | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
  61                            | ATMEL_UART_RI);
  62
  63         /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
  64         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
  65
  66         /* set serial console to ttyS0 (ie, DBGU) */
  67         at91_set_serial_console(0);
  68 }
  69
  70 static void __init ek_init_irq(void)
  71 {
  72         at91sam9260_init_interrupts(NULL);
  73 }
  74
  75
  76 /*
  77  * USB Host port
  78  */
  79 static struct at91_usbh_data __initdata ek_usbh_data = {
  80         .ports          = 2,
  81 };
  82
  83 /*
  84  * USB Device port
  85  */
  86 static struct at91_udc_data __initdata ek_udc_data = {
  87         .vbus_pin       = AT91_PIN_PC5,
  88         .pullup_pin     = 0,            /* pull-up driven by UDC */
  89 };
  90
  91
  92 /*
  93  * SPI devices.
  94  */
  95 static struct spi_board_info ek_spi_devices[] = {
  96 #if !(defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_AT91))
  97         {       /* DataFlash chip */
  98                 .modalias       = "mtd_dataflash",
  99                 .chip_select    = 1,
 100                 .max_speed_hz   = 15 * 1000 * 1000,
 101                 .bus_num        = 0,
 102         },
 103 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 104         {       /* DataFlash card */
 105                 .modalias       = "mtd_dataflash",
 106                 .chip_select    = 0,
 107                 .max_speed_hz   = 15 * 1000 * 1000,
 108                 .bus_num        = 0,
 109         },
 110 #endif
 111 #endif
 112 };
 113
 114
 115 /*
 116  * MACB Ethernet device
 117  */
 118 static struct at91_eth_data __initdata ek_macb_data = {
 119         .phy_irq_pin    = AT91_PIN_PB0,
 120         .is_rmii        = 1,
 121 };
 122
 123
 124 /*
 125  * NAND flash
 126  */
 127 static struct mtd_partition __initdata ek_nand_partition[] = {
 128         {
 129                 .name   = "Bootstrap",
 130                 .offset = 0,
 131                 .size   = 4 * SZ_1M,
 132         },
 133         {
 134                 .name   = "Partition 1",
 135                 .offset = MTDPART_OFS_NXTBLK,
 136                 .size   = 60 * SZ_1M,
 137         },
 138         {
 139                 .name   = "Partition 2",
 140                 .offset = MTDPART_OFS_NXTBLK,
 141                 .size   = MTDPART_SIZ_FULL,
 142         },
 143 };
 144
 145 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 146 {
 147         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 148         return ek_nand_partition;
 149 }
 150
 151 /* det_pin is not connected */
 152 static struct atmel_nand_data __initdata ek_nand_data = {
 153         .ale            = 21,
 154         .cle            = 22,
 155         .rdy_pin        = AT91_PIN_PC13,
 156         .enable_pin     = AT91_PIN_PC14,
 157         .partition_info = nand_partitions,
 158 #if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
 159         .bus_width_16   = 1,
 160 #else
 161         .bus_width_16   = 0,
 162 #endif
 163 };
 164
 165 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 166         .ncs_read_setup         = 0,
 167         .nrd_setup              = 2,
 168         .ncs_write_setup        = 0,
 169         .nwe_setup              = 2,
 170
 171         .ncs_read_pulse         = 4,
 172         .nrd_pulse              = 4,
 173         .ncs_write_pulse        = 4,
 174         .nwe_pulse              = 4,
 175
 176         .read_cycle             = 7,
 177         .write_cycle            = 7,
 178
 179         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 180         .tdf_cycles             = 3,
 181 };
 182
 183 static void __init ek_add_device_nand(void)
 184 {
 185         /* setup bus-width (8 or 16) */
 186         if (ek_nand_data.bus_width_16)
 187                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 188         else
 189                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 190
 191         /* configure chip-select 3 (NAND) */
 192         sam9_smc_configure(3, &ek_nand_smc_config);
 193
 194         at91_add_device_nand(&ek_nand_data);
 195 }
 196
 197
 198 /*
 199  * MCI (SD/MMC)
 200  * wp_pin is not connected
 201  */
 202 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 203 static struct mci_platform_data __initdata ek_mmc_data = {
 204         .slot[0] = {
 205                 .bus_width      = 4,
 206                 .detect_pin     = AT91_PIN_PC2,
 207                 .wp_pin         = -ENODEV,
 208         },
 209         .slot[1] = {
 210                 .bus_width      = 4,
 211                 .detect_pin     = AT91_PIN_PC9,
 212                 .wp_pin         = -ENODEV,
 213         },
 214
 215 };
 216 #else
 217 static struct at91_mmc_data __initdata ek_mmc_data = {
 218         .slot_b         = 1,    /* Only one slot so use slot B */
 219         .wire4          = 1,
 220         .det_pin        = AT91_PIN_PC9,
 221 };
 222 #endif
 223
 224 /*
 225  * LEDs
 226  */
 227 static struct gpio_led ek_leds[] = {
 228         {       /* "bottom" led, green, userled1 to be defined */
 229                 .name                   = "ds5",
 230                 .gpio                   = AT91_PIN_PB8,
 231                 .active_low             = 1,
 232                 .default_trigger        = "none",
 233         },
 234         {       /* "power" led, yellow */
 235                 .name                   = "ds1",
 236                 .gpio                   = AT91_PIN_PB9,
 237                 .default_trigger        = "heartbeat",
 238         }
 239 };
 240
 241 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || \
 242         defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
 243 static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
 244         REGULATOR_SUPPLY("AVDD", "0-001b"),
 245         REGULATOR_SUPPLY("HPVDD", "0-001b"),
 246         REGULATOR_SUPPLY("DBVDD", "0-001b"),
 247         REGULATOR_SUPPLY("DCVDD", "0-001b"),
 248 };
 249
 250 static struct regulator_init_data ek_avdd_reg_init_data = {
 251         .constraints    = {
 252                 .name   = "3V3",
 253                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 254         },
 255         .consumer_supplies = ek_audio_consumer_supplies,
 256         .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
 257 };
 258
 259 static struct fixed_voltage_config ek_vdd_pdata = {
 260         .supply_name    = "board-3V3",
 261         .microvolts     = 3300000,
 262         .gpio           = -EINVAL,
 263         .enabled_at_boot = 0,
 264         .init_data      = &ek_avdd_reg_init_data,
 265 };
 266 static struct platform_device ek_voltage_regulator = {
 267         .name           = "reg-fixed-voltage",
 268         .id             = -1,
 269         .num_resources  = 0,
 270         .dev            = {
 271                 .platform_data  = &ek_vdd_pdata,
 272         },
 273 };
 274 static void __init ek_add_regulators(void)
 275 {
 276         platform_device_register(&ek_voltage_regulator);
 277 }
 278 #else
 279 static void __init ek_add_regulators(void) {}
 280 #endif
 281
 282 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 283         {
 284                 I2C_BOARD_INFO("24c512", 0x50),
 285         },
 286 };
 287
 288
 289 static void __init ek_board_init(void)
 290 {
 291         /* Serial */
 292         at91_add_device_serial();
 293         /* USB Host */
 294         at91_add_device_usbh(&ek_usbh_data);
 295         /* USB Device */
 296         at91_add_device_udc(&ek_udc_data);
 297         /* SPI */
 298         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 299         /* NAND */
 300         ek_add_device_nand();
 301         /* Ethernet */
 302         at91_add_device_eth(&ek_macb_data);
 303         /* Regulators */
 304         ek_add_regulators();
 305         /* MMC */
 306 #if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
 307         at91_add_device_mci(0, &ek_mmc_data);
 308 #else
 309         at91_add_device_mmc(0, &ek_mmc_data);
 310 #endif
 311         /* I2C */
 312         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 313         /* LEDs */
 314         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 315         /* PCK0 provides MCLK to the WM8731 */
 316         at91_set_B_periph(AT91_PIN_PC1, 0);
 317         /* SSC (for WM8731) */
 318         at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
 319 }
 320
 321 MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
 322         /* Maintainer: Rob Emanuele */
 323         .phys_io        = AT91_BASE_SYS,
 324         .io_pg_offst    = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
 325         .boot_params    = AT91_SDRAM_BASE + 0x100,
 326         .timer          = &at91sam926x_timer,
 327         .map_io         = ek_map_io,
 328         .init_irq       = ek_init_irq,
 329         .init_machine   = ek_board_init,
 330 MACHINE_END