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         at91_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 /*
  64  * USB Host port
  65  */
  66 static struct at91_usbh_data __initdata ek_usbh_data = {
  67         .ports          = 2,
  68 };
  69
  70 /*
  71  * USB Device port
  72  */
  73 static struct at91_udc_data __initdata ek_udc_data = {
  74         .vbus_pin       = AT91_PIN_PC5,
  75         .pullup_pin     = 0,            /* pull-up driven by UDC */
  76 };
  77
  78 /*
  79  * MACB Ethernet device
  80  */
  81 static struct at91_eth_data __initdata ek_macb_data = {
  82         .phy_irq_pin    = AT91_PIN_PA31,
  83         .is_rmii        = 1,
  84 };
  85
  86 /*
  87  * NAND flash
  88  */
  89 static struct mtd_partition __initdata ek_nand_partition[] = {
  90         {
  91                 .name   = "Uboot & Kernel",
  92                 .offset = 0,
  93                 .size   = SZ_16M,
  94         },
  95         {
  96                 .name   = "Root FS",
  97                 .offset = MTDPART_OFS_NXTBLK,
  98                 .size   = 120 * SZ_1M,
  99         },
 100         {
 101                 .name   = "FS",
 102                 .offset = MTDPART_OFS_NXTBLK,
 103                 .size   = 120 * SZ_1M,
 104         }
 105 };
 106
 107 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 108 {
 109         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 110         return ek_nand_partition;
 111 }
 112
 113 static struct atmel_nand_data __initdata ek_nand_data = {
 114         .ale            = 21,
 115         .cle            = 22,
 116 //      .det_pin        = ... not connected
 117         .rdy_pin        = AT91_PIN_PC13,
 118         .enable_pin     = AT91_PIN_PC14,
 119         .partition_info = nand_partitions,
 120 };
 121
 122 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 123         .ncs_read_setup         = 0,
 124         .nrd_setup              = 1,
 125         .ncs_write_setup        = 0,
 126         .nwe_setup              = 1,
 127
 128         .ncs_read_pulse         = 3,
 129         .nrd_pulse              = 3,
 130         .ncs_write_pulse        = 3,
 131         .nwe_pulse              = 3,
 132
 133         .read_cycle             = 5,
 134         .write_cycle            = 5,
 135
 136         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 137         .tdf_cycles             = 2,
 138 };
 139
 140 static void __init ek_add_device_nand(void)
 141 {
 142         /* configure chip-select 3 (NAND) */
 143         sam9_smc_configure(3, &ek_nand_smc_config);
 144
 145         at91_add_device_nand(&ek_nand_data);
 146 }
 147
 148 /*
 149  * GPIO Buttons
 150  */
 151
 152 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 153 static struct gpio_keys_button ek_buttons[] = {
 154         {       /* USER PUSH BUTTON */
 155                 .code           = KEY_ENTER,
 156                 .gpio           = AT91_PIN_PB10,
 157                 .active_low     = 1,
 158                 .desc           = "user_pb",
 159                 .wakeup         = 1,
 160         }
 161 };
 162
 163 static struct gpio_keys_platform_data ek_button_data = {
 164         .buttons        = ek_buttons,
 165         .nbuttons       = ARRAY_SIZE(ek_buttons),
 166 };
 167
 168 static struct platform_device ek_button_device = {
 169         .name           = "gpio-keys",
 170         .id             = -1,
 171         .num_resources  = 0,
 172         .dev            = {
 173                 .platform_data  = &ek_button_data,
 174         }
 175 };
 176
 177 static void __init ek_add_device_buttons(void)
 178 {
 179         at91_set_GPIO_periph(AT91_PIN_PB10, 1); /* user push button, pull up enabled */
 180         at91_set_deglitch(AT91_PIN_PB10, 1);
 181
 182         platform_device_register(&ek_button_device);
 183 }
 184 #else
 185 static void __init ek_add_device_buttons(void) {}
 186 #endif
 187
 188 /*
 189  * LEDs
 190  */
 191 static struct gpio_led ek_leds[] = {
 192         {       /* user_led (green) */
 193                 .name                   = "user_led",
 194                 .gpio                   = AT91_PIN_PB21,
 195                 .active_low             = 0,
 196                 .default_trigger        = "heartbeat",
 197         }
 198 };
 199
 200 static void __init ek_board_init(void)
 201 {
 202         /* Serial */
 203         at91_add_device_serial();
 204         /* USB Host */
 205         at91_add_device_usbh(&ek_usbh_data);
 206         /* USB Device */
 207         at91_add_device_udc(&ek_udc_data);
 208         /* NAND */
 209         ek_add_device_nand();
 210         /* I2C */
 211         at91_add_device_i2c(NULL, 0);
 212         /* Ethernet */
 213         at91_add_device_eth(&ek_macb_data);
 214         /* Push Buttons */
 215         ek_add_device_buttons();
 216         /* LEDs */
 217         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 218         /* shutdown controller, wakeup button (5 msec low) */
 219         at91_sys_write(AT91_SHDW_MR, AT91_SHDW_CPTWK0_(10) | AT91_SHDW_WKMODE0_LOW
 220                                 | AT91_SHDW_RTTWKEN);
 221 }
 222
 223 MACHINE_START(USB_A9260, "CALAO USB_A9260")
 224         /* Maintainer: calao-systems */
 225         .timer          = &at91sam926x_timer,
 226         .map_io         = at91_map_io,
 227         .init_early     = ek_init_early,
 228         .init_irq       = at91_init_irq_default,
 229         .init_machine   = ek_board_init,
 230 MACHINE_END