arch/arm/mach-at91/board-sam9260ek.c

   1 /*
   2  * linux/arch/arm/mach-at91/board-sam9260ek.c
   3  *
   4  *  Copyright (C) 2005 SAN People
   5  *  Copyright (C) 2006 Atmel
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <linux/types.h>
  23 #include <linux/gpio.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/spi/at73c213.h>
  30 #include <linux/clk.h>
  31 #include <linux/i2c/at24.h>
  32 #include <linux/gpio_keys.h>
  33 #include <linux/input.h>
  34
  35 #include <asm/setup.h>
  36 #include <asm/mach-types.h>
  37 #include <asm/irq.h>
  38
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/map.h>
  41 #include <asm/mach/irq.h>
  42
  43 #include <mach/hardware.h>
  44 #include <mach/board.h>
  45 #include <mach/at91sam9_smc.h>
  46 #include <mach/at91_shdwc.h>
  47 #include <mach/system_rev.h>
  48
  49 #include "sam9_smc.h"
  50 #include "generic.h"
  51
  52
  53 static void __init ek_init_early(void)
  54 {
  55         /* Initialize processor: 18.432 MHz crystal */
  56         at91_initialize(18432000);
  57
  58         /* DBGU on ttyS0. (Rx & Tx only) */
  59         at91_register_uart(0, 0, 0);
  60
  61         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  62         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
  63                            | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
  64                            | ATMEL_UART_RI);
  65
  66         /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
  67         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
  68
  69         /* set serial console to ttyS0 (ie, DBGU) */
  70         at91_set_serial_console(0);
  71 }
  72
  73 /*
  74  * USB Host port
  75  */
  76 static struct at91_usbh_data __initdata ek_usbh_data = {
  77         .ports          = 2,
  78 };
  79
  80 /*
  81  * USB Device port
  82  */
  83 static struct at91_udc_data __initdata ek_udc_data = {
  84         .vbus_pin       = AT91_PIN_PC5,
  85         .pullup_pin     = 0,            /* pull-up driven by UDC */
  86 };
  87
  88
  89 /*
  90  * Audio
  91  */
  92 static struct at73c213_board_info at73c213_data = {
  93         .ssc_id         = 0,
  94         .shortname      = "AT91SAM9260-EK external DAC",
  95 };
  96
  97 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
  98 static void __init at73c213_set_clk(struct at73c213_board_info *info)
  99 {
 100         struct clk *pck0;
 101         struct clk *plla;
 102
 103         pck0 = clk_get(NULL, "pck0");
 104         plla = clk_get(NULL, "plla");
 105
 106         /* AT73C213 MCK Clock */
 107         at91_set_B_periph(AT91_PIN_PC1, 0);     /* PCK0 */
 108
 109         clk_set_parent(pck0, plla);
 110         clk_put(plla);
 111
 112         info->dac_clk = pck0;
 113 }
 114 #else
 115 static void __init at73c213_set_clk(struct at73c213_board_info *info) {}
 116 #endif
 117
 118 /*
 119  * SPI devices.
 120  */
 121 static struct spi_board_info ek_spi_devices[] = {
 122 #if !defined(CONFIG_MMC_AT91)
 123         {       /* DataFlash chip */
 124                 .modalias       = "mtd_dataflash",
 125                 .chip_select    = 1,
 126                 .max_speed_hz   = 15 * 1000 * 1000,
 127                 .bus_num        = 0,
 128         },
 129 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 130         {       /* DataFlash card */
 131                 .modalias       = "mtd_dataflash",
 132                 .chip_select    = 0,
 133                 .max_speed_hz   = 15 * 1000 * 1000,
 134                 .bus_num        = 0,
 135         },
 136 #endif
 137 #endif
 138 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
 139         {       /* AT73C213 DAC */
 140                 .modalias       = "at73c213",
 141                 .chip_select    = 0,
 142                 .max_speed_hz   = 10 * 1000 * 1000,
 143                 .bus_num        = 1,
 144                 .mode           = SPI_MODE_1,
 145                 .platform_data  = &at73c213_data,
 146         },
 147 #endif
 148 };
 149
 150
 151 /*
 152  * MACB Ethernet device
 153  */
 154 static struct at91_eth_data __initdata ek_macb_data = {
 155         .phy_irq_pin    = AT91_PIN_PA7,
 156         .is_rmii        = 1,
 157 };
 158
 159
 160 /*
 161  * NAND flash
 162  */
 163 static struct mtd_partition __initdata ek_nand_partition[] = {
 164         {
 165                 .name   = "Partition 1",
 166                 .offset = 0,
 167                 .size   = SZ_256K,
 168         },
 169         {
 170                 .name   = "Partition 2",
 171                 .offset = MTDPART_OFS_NXTBLK,
 172                 .size   = MTDPART_SIZ_FULL,
 173         },
 174 };
 175
 176 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 177 {
 178         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 179         return ek_nand_partition;
 180 }
 181
 182 static struct atmel_nand_data __initdata ek_nand_data = {
 183         .ale            = 21,
 184         .cle            = 22,
 185 //      .det_pin        = ... not connected
 186         .rdy_pin        = AT91_PIN_PC13,
 187         .enable_pin     = AT91_PIN_PC14,
 188         .partition_info = nand_partitions,
 189 };
 190
 191 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 192         .ncs_read_setup         = 0,
 193         .nrd_setup              = 1,
 194         .ncs_write_setup        = 0,
 195         .nwe_setup              = 1,
 196
 197         .ncs_read_pulse         = 3,
 198         .nrd_pulse              = 3,
 199         .ncs_write_pulse        = 3,
 200         .nwe_pulse              = 3,
 201
 202         .read_cycle             = 5,
 203         .write_cycle            = 5,
 204
 205         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 206         .tdf_cycles             = 2,
 207 };
 208
 209 static void __init ek_add_device_nand(void)
 210 {
 211         ek_nand_data.bus_width_16 = board_have_nand_16bit();
 212         /* setup bus-width (8 or 16) */
 213         if (ek_nand_data.bus_width_16)
 214                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 215         else
 216                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 217
 218         /* configure chip-select 3 (NAND) */
 219         sam9_smc_configure(3, &ek_nand_smc_config);
 220
 221         at91_add_device_nand(&ek_nand_data);
 222 }
 223
 224
 225 /*
 226  * MCI (SD/MMC)
 227  */
 228 static struct at91_mmc_data __initdata ek_mmc_data = {
 229         .slot_b         = 1,
 230         .wire4          = 1,
 231 //      .det_pin        = ... not connected
 232 //      .wp_pin         = ... not connected
 233 //      .vcc_pin        = ... not connected
 234 };
 235
 236
 237 /*
 238  * LEDs
 239  */
 240 static struct gpio_led ek_leds[] = {
 241         {       /* "bottom" led, green, userled1 to be defined */
 242                 .name                   = "ds5",
 243                 .gpio                   = AT91_PIN_PA6,
 244                 .active_low             = 1,
 245                 .default_trigger        = "none",
 246         },
 247         {       /* "power" led, yellow */
 248                 .name                   = "ds1",
 249                 .gpio                   = AT91_PIN_PA9,
 250                 .default_trigger        = "heartbeat",
 251         }
 252 };
 253
 254 /*
 255  * I2C devices
 256  */
 257 static struct at24_platform_data at24c512 = {
 258         .byte_len       = SZ_512K / 8,
 259         .page_size      = 128,
 260         .flags          = AT24_FLAG_ADDR16,
 261 };
 262
 263 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 264         {
 265                 I2C_BOARD_INFO("24c512", 0x50),
 266                 .platform_data = &at24c512,
 267         },
 268         /* more devices can be added using expansion connectors */
 269 };
 270
 271
 272 /*
 273  * GPIO Buttons
 274  */
 275 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 276 static struct gpio_keys_button ek_buttons[] = {
 277         {
 278                 .gpio           = AT91_PIN_PA30,
 279                 .code           = BTN_3,
 280                 .desc           = "Button 3",
 281                 .active_low     = 1,
 282                 .wakeup         = 1,
 283         },
 284         {
 285                 .gpio           = AT91_PIN_PA31,
 286                 .code           = BTN_4,
 287                 .desc           = "Button 4",
 288                 .active_low     = 1,
 289                 .wakeup         = 1,
 290         }
 291 };
 292
 293 static struct gpio_keys_platform_data ek_button_data = {
 294         .buttons        = ek_buttons,
 295         .nbuttons       = ARRAY_SIZE(ek_buttons),
 296 };
 297
 298 static struct platform_device ek_button_device = {
 299         .name           = "gpio-keys",
 300         .id             = -1,
 301         .num_resources  = 0,
 302         .dev            = {
 303                 .platform_data  = &ek_button_data,
 304         }
 305 };
 306
 307 static void __init ek_add_device_buttons(void)
 308 {
 309         at91_set_gpio_input(AT91_PIN_PA30, 1);  /* btn3 */
 310         at91_set_deglitch(AT91_PIN_PA30, 1);
 311         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* btn4 */
 312         at91_set_deglitch(AT91_PIN_PA31, 1);
 313
 314         platform_device_register(&ek_button_device);
 315 }
 316 #else
 317 static void __init ek_add_device_buttons(void) {}
 318 #endif
 319
 320
 321 static void __init ek_board_init(void)
 322 {
 323         /* Serial */
 324         at91_add_device_serial();
 325         /* USB Host */
 326         at91_add_device_usbh(&ek_usbh_data);
 327         /* USB Device */
 328         at91_add_device_udc(&ek_udc_data);
 329         /* SPI */
 330         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 331         /* NAND */
 332         ek_add_device_nand();
 333         /* Ethernet */
 334         at91_add_device_eth(&ek_macb_data);
 335         /* MMC */
 336         at91_add_device_mmc(0, &ek_mmc_data);
 337         /* I2C */
 338         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 339         /* SSC (to AT73C213) */
 340         at73c213_set_clk(&at73c213_data);
 341         at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
 342         /* LEDs */
 343         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 344         /* Push Buttons */
 345         ek_add_device_buttons();
 346 }
 347
 348 MACHINE_START(AT91SAM9260EK, "Atmel AT91SAM9260-EK")
 349         /* Maintainer: Atmel */
 350         .timer          = &at91sam926x_timer,
 351         .map_io         = at91_map_io,
 352         .init_early     = ek_init_early,
 353         .init_irq       = at91_init_irq_default,
 354         .init_machine   = ek_board_init,
 355 MACHINE_END