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/gpio.h>
  25 #include <linux/init.h>
  26 #include <linux/mm.h>
  27 #include <linux/module.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/spi/spi.h>
  30 #include <linux/gpio_keys.h>
  31 #include <linux/input.h>
  32
  33 #include <asm/setup.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/irq.h>
  36
  37 #include <asm/mach/arch.h>
  38 #include <asm/mach/map.h>
  39 #include <asm/mach/irq.h>
  40
  41 #include <mach/hardware.h>
  42 #include <mach/board.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_init_early(void)
  51 {
  52         /* Initialize processor: 12.00 MHz crystal */
  53         at91_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 /*
  63  * USB Host port
  64  */
  65 static struct at91_usbh_data __initdata ek_usbh_data = {
  66         .ports          = 2,
  67 };
  68
  69 /*
  70  * USB Device port
  71  */
  72 static struct at91_udc_data __initdata ek_udc_data = {
  73         .vbus_pin       = AT91_PIN_PB11,
  74         .pullup_pin     = 0,            /* pull-up driven by UDC */
  75 };
  76
  77 /*
  78  * SPI devices.
  79  */
  80 static struct spi_board_info ek_spi_devices[] = {
  81 #if !defined(CONFIG_MMC_AT91)
  82         {       /* DataFlash chip */
  83                 .modalias       = "mtd_dataflash",
  84                 .chip_select    = 0,
  85                 .max_speed_hz   = 15 * 1000 * 1000,
  86                 .bus_num        = 0,
  87         }
  88 #endif
  89 };
  90
  91 /*
  92  * MACB Ethernet device
  93  */
  94 static struct at91_eth_data __initdata ek_macb_data = {
  95         .phy_irq_pin    = AT91_PIN_PE31,
  96         .is_rmii        = 1,
  97 };
  98
  99 /*
 100  * NAND flash
 101  */
 102 static struct mtd_partition __initdata ek_nand_partition[] = {
 103         {
 104                 .name   = "Linux Kernel",
 105                 .offset = 0,
 106                 .size   = SZ_16M,
 107         },
 108         {
 109                 .name   = "Root FS",
 110                 .offset = MTDPART_OFS_NXTBLK,
 111                 .size   = 120 * SZ_1M,
 112         },
 113         {
 114                 .name   = "FS",
 115                 .offset = MTDPART_OFS_NXTBLK,
 116                 .size   = 120 * SZ_1M,
 117         }
 118 };
 119
 120 static struct atmel_nand_data __initdata ek_nand_data = {
 121         .ale            = 21,
 122         .cle            = 22,
 123 //      .det_pin        = ... not connected
 124         .rdy_pin        = AT91_PIN_PA22,
 125         .enable_pin     = AT91_PIN_PD15,
 126         .parts          = ek_nand_partition,
 127         .num_parts      = ARRAY_SIZE(ek_nand_partition),
 128 };
 129
 130 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 131         .ncs_read_setup         = 0,
 132         .nrd_setup              = 1,
 133         .ncs_write_setup        = 0,
 134         .nwe_setup              = 1,
 135
 136         .ncs_read_pulse         = 3,
 137         .nrd_pulse              = 3,
 138         .ncs_write_pulse        = 3,
 139         .nwe_pulse              = 3,
 140
 141         .read_cycle             = 5,
 142         .write_cycle            = 5,
 143
 144         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 145         .tdf_cycles             = 2,
 146 };
 147
 148 static void __init ek_add_device_nand(void)
 149 {
 150         /* configure chip-select 3 (NAND) */
 151         sam9_smc_configure(3, &ek_nand_smc_config);
 152
 153         at91_add_device_nand(&ek_nand_data);
 154 }
 155
 156
 157 /*
 158  * GPIO Buttons
 159  */
 160 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 161 static struct gpio_keys_button ek_buttons[] = {
 162         {       /* USER PUSH BUTTON */
 163                 .code           = KEY_ENTER,
 164                 .gpio           = AT91_PIN_PB10,
 165                 .active_low     = 1,
 166                 .desc           = "user_pb",
 167                 .wakeup         = 1,
 168         }
 169 };
 170
 171 static struct gpio_keys_platform_data ek_button_data = {
 172         .buttons        = ek_buttons,
 173         .nbuttons       = ARRAY_SIZE(ek_buttons),
 174 };
 175
 176 static struct platform_device ek_button_device = {
 177         .name           = "gpio-keys",
 178         .id             = -1,
 179         .num_resources  = 0,
 180         .dev            = {
 181                 .platform_data  = &ek_button_data,
 182         }
 183 };
 184
 185 static void __init ek_add_device_buttons(void)
 186 {
 187         at91_set_GPIO_periph(AT91_PIN_PB10, 1); /* user push button, pull up enabled */
 188         at91_set_deglitch(AT91_PIN_PB10, 1);
 189
 190         platform_device_register(&ek_button_device);
 191 }
 192 #else
 193 static void __init ek_add_device_buttons(void) {}
 194 #endif
 195
 196 /*
 197  * LEDs
 198  */
 199 static struct gpio_led ek_leds[] = {
 200         {       /* user_led (green) */
 201                 .name                   = "user_led",
 202                 .gpio                   = AT91_PIN_PB21,
 203                 .active_low             = 1,
 204                 .default_trigger        = "heartbeat",
 205         }
 206 };
 207
 208
 209 static void __init ek_board_init(void)
 210 {
 211         /* Serial */
 212         at91_add_device_serial();
 213         /* USB Host */
 214         at91_add_device_usbh(&ek_usbh_data);
 215         /* USB Device */
 216         at91_add_device_udc(&ek_udc_data);
 217         /* SPI */
 218         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 219         /* Ethernet */
 220         at91_add_device_eth(&ek_macb_data);
 221         /* NAND */
 222         ek_add_device_nand();
 223         /* I2C */
 224         at91_add_device_i2c(NULL, 0);
 225         /* Push Buttons */
 226         ek_add_device_buttons();
 227         /* LEDs */
 228         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 229         /* shutdown controller, wakeup button (5 msec low) */
 230         at91_sys_write(AT91_SHDW_MR, AT91_SHDW_CPTWK0_(10) | AT91_SHDW_WKMODE0_LOW
 231                                 | AT91_SHDW_RTTWKEN);
 232 }
 233
 234 MACHINE_START(USB_A9263, "CALAO USB_A9263")
 235         /* Maintainer: calao-systems */
 236         .timer          = &at91sam926x_timer,
 237         .map_io         = at91_map_io,
 238         .init_early     = ek_init_early,
 239         .init_irq       = at91_init_irq_default,
 240         .init_machine   = ek_board_init,
 241 MACHINE_END