arch/arm/mach-at91/board-usb-a9260.c

   1 /*
   2  * linux/arch/arm/mach-at91/board-usb-a9260.c
   3  *
   4  *  Copyright (C) 2005 SAN People
   5  *  Copyright (C) 2006 Atmel
   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 #include <linux/clk.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/gpio.h>
  44 #include <mach/at91sam9_smc.h>
  45 #include <mach/at91_shdwc.h>
  46
  47 #include "sam9_smc.h"
  48 #include "generic.h"
  49
  50
  51 static void __init ek_init_early(void)
  52 {
  53         /* Initialize processor: 12.000 MHz crystal */
  54         at91sam9260_initialize(12000000);
  55
  56         /* DBGU on ttyS0. (Rx & Tx only) */
  57         at91_register_uart(0, 0, 0);
  58
  59         /* set serial console to ttyS0 (ie, DBGU) */
  60         at91_set_serial_console(0);
  61 }
  62
  63 static void __init ek_init_irq(void)
  64 {
  65         at91sam9260_init_interrupts(NULL);
  66 }
  67
  68
  69 /*
  70  * USB Host port
  71  */
  72 static struct at91_usbh_data __initdata ek_usbh_data = {
  73         .ports          = 2,
  74 };
  75
  76 /*
  77  * USB Device port
  78  */
  79 static struct at91_udc_data __initdata ek_udc_data = {
  80         .vbus_pin       = AT91_PIN_PC5,
  81         .pullup_pin     = 0,            /* pull-up driven by UDC */
  82 };
  83
  84 /*
  85  * MACB Ethernet device
  86  */
  87 static struct at91_eth_data __initdata ek_macb_data = {
  88         .phy_irq_pin    = AT91_PIN_PA31,
  89         .is_rmii        = 1,
  90 };
  91
  92 /*
  93  * NAND flash
  94  */
  95 static struct mtd_partition __initdata ek_nand_partition[] = {
  96         {
  97                 .name   = "Uboot & Kernel",
  98                 .offset = 0,
  99                 .size   = SZ_16M,
 100         },
 101         {
 102                 .name   = "Root FS",
 103                 .offset = MTDPART_OFS_NXTBLK,
 104                 .size   = 120 * SZ_1M,
 105         },
 106         {
 107                 .name   = "FS",
 108                 .offset = MTDPART_OFS_NXTBLK,
 109                 .size   = 120 * SZ_1M,
 110         }
 111 };
 112
 113 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 114 {
 115         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 116         return ek_nand_partition;
 117 }
 118
 119 static struct atmel_nand_data __initdata ek_nand_data = {
 120         .ale            = 21,
 121         .cle            = 22,
 122 //      .det_pin        = ... not connected
 123         .rdy_pin        = AT91_PIN_PC13,
 124         .enable_pin     = AT91_PIN_PC14,
 125         .partition_info = nand_partitions,
 126 };
 127
 128 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 129         .ncs_read_setup         = 0,
 130         .nrd_setup              = 1,
 131         .ncs_write_setup        = 0,
 132         .nwe_setup              = 1,
 133
 134         .ncs_read_pulse         = 3,
 135         .nrd_pulse              = 3,
 136         .ncs_write_pulse        = 3,
 137         .nwe_pulse              = 3,
 138
 139         .read_cycle             = 5,
 140         .write_cycle            = 5,
 141
 142         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 143         .tdf_cycles             = 2,
 144 };
 145
 146 static void __init ek_add_device_nand(void)
 147 {
 148         /* configure chip-select 3 (NAND) */
 149         sam9_smc_configure(3, &ek_nand_smc_config);
 150
 151         at91_add_device_nand(&ek_nand_data);
 152 }
 153
 154 /*
 155  * GPIO Buttons
 156  */
 157
 158 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 159 static struct gpio_keys_button ek_buttons[] = {
 160         {       /* USER PUSH BUTTON */
 161                 .code           = KEY_ENTER,
 162                 .gpio           = AT91_PIN_PB10,
 163                 .active_low     = 1,
 164                 .desc           = "user_pb",
 165                 .wakeup         = 1,
 166         }
 167 };
 168
 169 static struct gpio_keys_platform_data ek_button_data = {
 170         .buttons        = ek_buttons,
 171         .nbuttons       = ARRAY_SIZE(ek_buttons),
 172 };
 173
 174 static struct platform_device ek_button_device = {
 175         .name           = "gpio-keys",
 176         .id             = -1,
 177         .num_resources  = 0,
 178         .dev            = {
 179                 .platform_data  = &ek_button_data,
 180         }
 181 };
 182
 183 static void __init ek_add_device_buttons(void)
 184 {
 185         at91_set_GPIO_periph(AT91_PIN_PB10, 1); /* user push button, pull up enabled */
 186         at91_set_deglitch(AT91_PIN_PB10, 1);
 187
 188         platform_device_register(&ek_button_device);
 189 }
 190 #else
 191 static void __init ek_add_device_buttons(void) {}
 192 #endif
 193
 194 /*
 195  * LEDs
 196  */
 197 static struct gpio_led ek_leds[] = {
 198         {       /* user_led (green) */
 199                 .name                   = "user_led",
 200                 .gpio                   = AT91_PIN_PB21,
 201                 .active_low             = 0,
 202                 .default_trigger        = "heartbeat",
 203         }
 204 };
 205
 206 static void __init ek_board_init(void)
 207 {
 208         /* Serial */
 209         at91_add_device_serial();
 210         /* USB Host */
 211         at91_add_device_usbh(&ek_usbh_data);
 212         /* USB Device */
 213         at91_add_device_udc(&ek_udc_data);
 214         /* NAND */
 215         ek_add_device_nand();
 216         /* I2C */
 217         at91_add_device_i2c(NULL, 0);
 218         /* Ethernet */
 219         at91_add_device_eth(&ek_macb_data);
 220         /* Push Buttons */
 221         ek_add_device_buttons();
 222         /* LEDs */
 223         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 224         /* shutdown controller, wakeup button (5 msec low) */
 225         at91_sys_write(AT91_SHDW_MR, AT91_SHDW_CPTWK0_(10) | AT91_SHDW_WKMODE0_LOW
 226                                 | AT91_SHDW_RTTWKEN);
 227 }
 228
 229 MACHINE_START(USB_A9260, "CALAO USB_A9260")
 230         /* Maintainer: calao-systems */
 231         .timer          = &at91sam926x_timer,
 232         .map_io         = at91sam9260_map_io,
 233         .init_early     = ek_init_early,
 234         .init_irq       = ek_init_irq,
 235         .init_machine   = ek_board_init,
 236 MACHINE_END