release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-at91/board-usb-a9263.c

   1 /*
   2  * linux/arch/arm/mach-at91/board-usb-a9263.c
   3  *
   4  *  Copyright (C) 2005 SAN People
   5  *  Copyright (C) 2007 Atmel Corporation.
   6  *  Copyright (C) 2007 Calao-systems
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #include <linux/types.h>
  24 #include <linux/init.h>
  25 #include <linux/mm.h>
  26 #include <linux/module.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/spi/spi.h>
  29 #include <linux/gpio_keys.h>
  30 #include <linux/input.h>
  31
  32 #include <asm/setup.h>
  33 #include <asm/mach-types.h>
  34 #include <asm/irq.h>
  35
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/map.h>
  38 #include <asm/mach/irq.h>
  39
  40 #include <mach/hardware.h>
  41 #include <mach/board.h>
  42 #include <mach/gpio.h>
  43 #include <mach/at91sam9_smc.h>
  44 #include <mach/at91_shdwc.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: 12.00 MHz crystal */
  53         at91sam9263_initialize(12000000);
  54
  55         /* DBGU on ttyS0. (Rx & Tx only) */
  56         at91_register_uart(0, 0, 0);
  57
  58         /* set serial console to ttyS0 (ie, DBGU) */
  59         at91_set_serial_console(0);
  60 }
  61
  62 static void __init ek_init_irq(void)
  63 {
  64         at91sam9263_init_interrupts(NULL);
  65 }
  66
  67
  68 /*
  69  * USB Host port
  70  */
  71 static struct at91_usbh_data __initdata ek_usbh_data = {
  72         .ports          = 2,
  73 };
  74
  75 /*
  76  * USB Device port
  77  */
  78 static struct at91_udc_data __initdata ek_udc_data = {
  79         .vbus_pin       = AT91_PIN_PB11,
  80         .pullup_pin     = 0,            /* pull-up driven by UDC */
  81 };
  82
  83 /*
  84  * SPI devices.
  85  */
  86 static struct spi_board_info ek_spi_devices[] = {
  87 #if !defined(CONFIG_MMC_AT91)
  88         {       /* DataFlash chip */
  89                 .modalias       = "mtd_dataflash",
  90                 .chip_select    = 0,
  91                 .max_speed_hz   = 15 * 1000 * 1000,
  92                 .bus_num        = 0,
  93         }
  94 #endif
  95 };
  96
  97 /*
  98  * MACB Ethernet device
  99  */
 100 static struct at91_eth_data __initdata ek_macb_data = {
 101         .phy_irq_pin    = AT91_PIN_PE31,
 102         .is_rmii        = 1,
 103 };
 104
 105 /*
 106  * NAND flash
 107  */
 108 static struct mtd_partition __initdata ek_nand_partition[] = {
 109         {
 110                 .name   = "Linux Kernel",
 111                 .offset = 0,
 112                 .size   = SZ_16M,
 113         },
 114         {
 115                 .name   = "Root FS",
 116                 .offset = MTDPART_OFS_NXTBLK,
 117                 .size   = 120 * SZ_1M,
 118         },
 119         {
 120                 .name   = "FS",
 121                 .offset = MTDPART_OFS_NXTBLK,
 122                 .size   = 120 * SZ_1M,
 123         }
 124 };
 125
 126 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 127 {
 128         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 129         return ek_nand_partition;
 130 }
 131
 132 static struct atmel_nand_data __initdata ek_nand_data = {
 133         .ale            = 21,
 134         .cle            = 22,
 135 //      .det_pin        = ... not connected
 136         .rdy_pin        = AT91_PIN_PA22,
 137         .enable_pin     = AT91_PIN_PD15,
 138         .partition_info = nand_partitions,
 139 };
 140
 141 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 142         .ncs_read_setup         = 0,
 143         .nrd_setup              = 1,
 144         .ncs_write_setup        = 0,
 145         .nwe_setup              = 1,
 146
 147         .ncs_read_pulse         = 3,
 148         .nrd_pulse              = 3,
 149         .ncs_write_pulse        = 3,
 150         .nwe_pulse              = 3,
 151
 152         .read_cycle             = 5,
 153         .write_cycle            = 5,
 154
 155         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 156         .tdf_cycles             = 2,
 157 };
 158
 159 static void __init ek_add_device_nand(void)
 160 {
 161         /* configure chip-select 3 (NAND) */
 162         sam9_smc_configure(3, &ek_nand_smc_config);
 163
 164         at91_add_device_nand(&ek_nand_data);
 165 }
 166
 167
 168 /*
 169  * GPIO Buttons
 170  */
 171 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 172 static struct gpio_keys_button ek_buttons[] = {
 173         {       /* USER PUSH BUTTON */
 174                 .code           = KEY_ENTER,
 175                 .gpio           = AT91_PIN_PB10,
 176                 .active_low     = 1,
 177                 .desc           = "user_pb",
 178                 .wakeup         = 1,
 179         }
 180 };
 181
 182 static struct gpio_keys_platform_data ek_button_data = {
 183         .buttons        = ek_buttons,
 184         .nbuttons       = ARRAY_SIZE(ek_buttons),
 185 };
 186
 187 static struct platform_device ek_button_device = {
 188         .name           = "gpio-keys",
 189         .id             = -1,
 190         .num_resources  = 0,
 191         .dev            = {
 192                 .platform_data  = &ek_button_data,
 193         }
 194 };
 195
 196 static void __init ek_add_device_buttons(void)
 197 {
 198         at91_set_GPIO_periph(AT91_PIN_PB10, 1); /* user push button, pull up enabled */
 199         at91_set_deglitch(AT91_PIN_PB10, 1);
 200
 201         platform_device_register(&ek_button_device);
 202 }
 203 #else
 204 static void __init ek_add_device_buttons(void) {}
 205 #endif
 206
 207 /*
 208  * LEDs
 209  */
 210 static struct gpio_led ek_leds[] = {
 211         {       /* user_led (green) */
 212                 .name                   = "user_led",
 213                 .gpio                   = AT91_PIN_PB21,
 214                 .active_low             = 1,
 215                 .default_trigger        = "heartbeat",
 216         }
 217 };
 218
 219
 220 static void __init ek_board_init(void)
 221 {
 222         /* Serial */
 223         at91_add_device_serial();
 224         /* USB Host */
 225         at91_add_device_usbh(&ek_usbh_data);
 226         /* USB Device */
 227         at91_add_device_udc(&ek_udc_data);
 228         /* SPI */
 229         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 230         /* Ethernet */
 231         at91_add_device_eth(&ek_macb_data);
 232         /* NAND */
 233         ek_add_device_nand();
 234         /* I2C */
 235         at91_add_device_i2c(NULL, 0);
 236         /* Push Buttons */
 237         ek_add_device_buttons();
 238         /* LEDs */
 239         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 240         /* shutdown controller, wakeup button (5 msec low) */
 241         at91_sys_write(AT91_SHDW_MR, AT91_SHDW_CPTWK0_(10) | AT91_SHDW_WKMODE0_LOW
 242                                 | AT91_SHDW_RTTWKEN);
 243 }
 244
 245 MACHINE_START(USB_A9263, "CALAO USB_A9263")
 246         /* Maintainer: calao-systems */
 247         .phys_io        = AT91_BASE_SYS,
 248         .io_pg_offst    = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
 249         .boot_params    = AT91_SDRAM_BASE + 0x100,
 250         .timer          = &at91sam926x_timer,
 251         .map_io         = ek_map_io,
 252         .init_irq       = ek_init_irq,
 253         .init_machine   = ek_board_init,
 254 MACHINE_END