release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-at91/board-cpu9krea.c

   1 /*
   2  * linux/arch/arm/mach-at91/board-cpu9krea.c
   3  *
   4  *  Copyright (C) 2005 SAN People
   5  *  Copyright (C) 2006 Atmel
   6  *  Copyright (C) 2009 Eric Benard - eric@eukrea.com
   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/clk.h>
  29 #include <linux/gpio_keys.h>
  30 #include <linux/input.h>
  31 #include <linux/mtd/physmap.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/at91sam9260_matrix.h>
  46
  47 #include "sam9_smc.h"
  48 #include "generic.h"
  49
  50 static void __init cpu9krea_map_io(void)
  51 {
  52         /* Initialize processor: 18.432 MHz crystal */
  53         at91sam9260_initialize(18432000);
  54
  55         /* DGBU on ttyS0. (Rx & Tx only) */
  56         at91_register_uart(0, 0, 0);
  57
  58         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  59         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS |
  60                 ATMEL_UART_RTS | ATMEL_UART_DTR | ATMEL_UART_DSR |
  61                 ATMEL_UART_DCD | ATMEL_UART_RI);
  62
  63         /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
  64         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS |
  65                 ATMEL_UART_RTS);
  66
  67         /* USART2 on ttyS3. (Rx, Tx, RTS, CTS) */
  68         at91_register_uart(AT91SAM9260_ID_US2, 3, ATMEL_UART_CTS |
  69                 ATMEL_UART_RTS);
  70
  71         /* USART3 on ttyS4. (Rx, Tx) */
  72         at91_register_uart(AT91SAM9260_ID_US3, 4, 0);
  73
  74         /* USART4 on ttyS5. (Rx, Tx) */
  75         at91_register_uart(AT91SAM9260_ID_US4, 5, 0);
  76
  77         /* USART5 on ttyS6. (Rx, Tx) */
  78         at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
  79
  80         /* set serial console to ttyS0 (ie, DBGU) */
  81         at91_set_serial_console(0);
  82 }
  83
  84 static void __init cpu9krea_init_irq(void)
  85 {
  86         at91sam9260_init_interrupts(NULL);
  87 }
  88
  89 /*
  90  * USB Host port
  91  */
  92 static struct at91_usbh_data __initdata cpu9krea_usbh_data = {
  93         .ports          = 2,
  94 };
  95
  96 /*
  97  * USB Device port
  98  */
  99 static struct at91_udc_data __initdata cpu9krea_udc_data = {
 100         .vbus_pin       = AT91_PIN_PC8,
 101         .pullup_pin     = 0,            /* pull-up driven by UDC */
 102 };
 103
 104 /*
 105  * MACB Ethernet device
 106  */
 107 static struct at91_eth_data __initdata cpu9krea_macb_data = {
 108         .is_rmii        = 1,
 109 };
 110
 111 /*
 112  * NAND flash
 113  */
 114 static struct atmel_nand_data __initdata cpu9krea_nand_data = {
 115         .ale            = 21,
 116         .cle            = 22,
 117         .rdy_pin        = AT91_PIN_PC13,
 118         .enable_pin     = AT91_PIN_PC14,
 119         .bus_width_16   = 0,
 120 };
 121
 122 #ifdef CONFIG_MACH_CPU9260
 123 static struct sam9_smc_config __initdata cpu9krea_nand_smc_config = {
 124         .ncs_read_setup         = 0,
 125         .nrd_setup              = 1,
 126         .ncs_write_setup        = 0,
 127         .nwe_setup              = 1,
 128
 129         .ncs_read_pulse         = 3,
 130         .nrd_pulse              = 3,
 131         .ncs_write_pulse        = 3,
 132         .nwe_pulse              = 3,
 133
 134         .read_cycle             = 5,
 135         .write_cycle            = 5,
 136
 137         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE
 138                 | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 139         .tdf_cycles             = 2,
 140 };
 141 #else
 142 static struct sam9_smc_config __initdata cpu9krea_nand_smc_config = {
 143         .ncs_read_setup         = 0,
 144         .nrd_setup              = 2,
 145         .ncs_write_setup        = 0,
 146         .nwe_setup              = 2,
 147
 148         .ncs_read_pulse         = 4,
 149         .nrd_pulse              = 4,
 150         .ncs_write_pulse        = 4,
 151         .nwe_pulse              = 4,
 152
 153         .read_cycle             = 7,
 154         .write_cycle            = 7,
 155
 156         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE
 157                 | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 158         .tdf_cycles             = 3,
 159 };
 160 #endif
 161
 162 static void __init cpu9krea_add_device_nand(void)
 163 {
 164         sam9_smc_configure(3, &cpu9krea_nand_smc_config);
 165         at91_add_device_nand(&cpu9krea_nand_data);
 166 }
 167
 168 /*
 169  * NOR flash
 170  */
 171 static struct physmap_flash_data cpuat9260_nor_data = {
 172         .width          = 2,
 173 };
 174
 175 #define NOR_BASE        AT91_CHIPSELECT_0
 176 #define NOR_SIZE        SZ_64M
 177
 178 static struct resource nor_flash_resources[] = {
 179         {
 180                 .start  = NOR_BASE,
 181                 .end    = NOR_BASE + NOR_SIZE - 1,
 182                 .flags  = IORESOURCE_MEM,
 183         }
 184 };
 185
 186 static struct platform_device cpu9krea_nor_flash = {
 187         .name           = "physmap-flash",
 188         .id             = 0,
 189         .dev            = {
 190                 .platform_data  = &cpuat9260_nor_data,
 191         },
 192         .resource       = nor_flash_resources,
 193         .num_resources  = ARRAY_SIZE(nor_flash_resources),
 194 };
 195
 196 #ifdef CONFIG_MACH_CPU9260
 197 static struct sam9_smc_config __initdata cpu9krea_nor_smc_config = {
 198         .ncs_read_setup         = 0,
 199         .nrd_setup              = 1,
 200         .ncs_write_setup        = 0,
 201         .nwe_setup              = 1,
 202
 203         .ncs_read_pulse         = 10,
 204         .nrd_pulse              = 10,
 205         .ncs_write_pulse        = 6,
 206         .nwe_pulse              = 6,
 207
 208         .read_cycle             = 12,
 209         .write_cycle            = 8,
 210
 211         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE
 212                         | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE
 213                         | AT91_SMC_DBW_16,
 214         .tdf_cycles             = 2,
 215 };
 216 #else
 217 static struct sam9_smc_config __initdata cpu9krea_nor_smc_config = {
 218         .ncs_read_setup         = 0,
 219         .nrd_setup              = 1,
 220         .ncs_write_setup        = 0,
 221         .nwe_setup              = 1,
 222
 223         .ncs_read_pulse         = 13,
 224         .nrd_pulse              = 13,
 225         .ncs_write_pulse        = 8,
 226         .nwe_pulse              = 8,
 227
 228         .read_cycle             = 15,
 229         .write_cycle            = 10,
 230
 231         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE
 232                         | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE
 233                         | AT91_SMC_DBW_16,
 234         .tdf_cycles             = 2,
 235 };
 236 #endif
 237
 238 static __init void cpu9krea_add_device_nor(void)
 239 {
 240         unsigned long csa;
 241
 242         csa = at91_sys_read(AT91_MATRIX_EBICSA);
 243         at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_VDDIOMSEL_3_3V);
 244
 245         /* configure chip-select 0 (NOR) */
 246         sam9_smc_configure(0, &cpu9krea_nor_smc_config);
 247
 248         platform_device_register(&cpu9krea_nor_flash);
 249 }
 250
 251 /*
 252  * LEDs
 253  */
 254 static struct gpio_led cpu9krea_leds[] = {
 255         {       /* LED1 */
 256                 .name                   = "LED1",
 257                 .gpio                   = AT91_PIN_PC11,
 258                 .active_low             = 1,
 259                 .default_trigger        = "timer",
 260         },
 261         {       /* LED2 */
 262                 .name                   = "LED2",
 263                 .gpio                   = AT91_PIN_PC12,
 264                 .active_low             = 1,
 265                 .default_trigger        = "heartbeat",
 266         },
 267         {       /* LED3 */
 268                 .name                   = "LED3",
 269                 .gpio                   = AT91_PIN_PC7,
 270                 .active_low             = 1,
 271                 .default_trigger        = "none",
 272         },
 273         {       /* LED4 */
 274                 .name                   = "LED4",
 275                 .gpio                   = AT91_PIN_PC9,
 276                 .active_low             = 1,
 277                 .default_trigger        = "none",
 278         }
 279 };
 280
 281 static struct i2c_board_info __initdata cpu9krea_i2c_devices[] = {
 282         {
 283                 I2C_BOARD_INFO("rtc-ds1307", 0x68),
 284                 .type   = "ds1339",
 285         },
 286 };
 287
 288 /*
 289  * GPIO Buttons
 290  */
 291 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 292 static struct gpio_keys_button cpu9krea_buttons[] = {
 293         {
 294                 .gpio           = AT91_PIN_PC3,
 295                 .code           = BTN_0,
 296                 .desc           = "BP1",
 297                 .active_low     = 1,
 298                 .wakeup         = 1,
 299         },
 300         {
 301                 .gpio           = AT91_PIN_PB20,
 302                 .code           = BTN_1,
 303                 .desc           = "BP2",
 304                 .active_low     = 1,
 305                 .wakeup         = 1,
 306         }
 307 };
 308
 309 static struct gpio_keys_platform_data cpu9krea_button_data = {
 310         .buttons        = cpu9krea_buttons,
 311         .nbuttons       = ARRAY_SIZE(cpu9krea_buttons),
 312 };
 313
 314 static struct platform_device cpu9krea_button_device = {
 315         .name           = "gpio-keys",
 316         .id             = -1,
 317         .num_resources  = 0,
 318         .dev            = {
 319                 .platform_data  = &cpu9krea_button_data,
 320         }
 321 };
 322
 323 static void __init cpu9krea_add_device_buttons(void)
 324 {
 325         at91_set_gpio_input(AT91_PIN_PC3, 1);   /* BP1 */
 326         at91_set_deglitch(AT91_PIN_PC3, 1);
 327         at91_set_gpio_input(AT91_PIN_PB20, 1);  /* BP2 */
 328         at91_set_deglitch(AT91_PIN_PB20, 1);
 329
 330         platform_device_register(&cpu9krea_button_device);
 331 }
 332 #else
 333 static void __init cpu9krea_add_device_buttons(void)
 334 {
 335 }
 336 #endif
 337
 338 /*
 339  * MCI (SD/MMC)
 340  */
 341 static struct at91_mmc_data __initdata cpu9krea_mmc_data = {
 342         .slot_b         = 0,
 343         .wire4          = 1,
 344         .det_pin        = AT91_PIN_PA29,
 345 };
 346
 347 static void __init cpu9krea_board_init(void)
 348 {
 349         /* NOR */
 350         cpu9krea_add_device_nor();
 351         /* Serial */
 352         at91_add_device_serial();
 353         /* USB Host */
 354         at91_add_device_usbh(&cpu9krea_usbh_data);
 355         /* USB Device */
 356         at91_add_device_udc(&cpu9krea_udc_data);
 357         /* NAND */
 358         cpu9krea_add_device_nand();
 359         /* Ethernet */
 360         at91_add_device_eth(&cpu9krea_macb_data);
 361         /* MMC */
 362         at91_add_device_mmc(0, &cpu9krea_mmc_data);
 363         /* I2C */
 364         at91_add_device_i2c(cpu9krea_i2c_devices,
 365                 ARRAY_SIZE(cpu9krea_i2c_devices));
 366         /* LEDs */
 367         at91_gpio_leds(cpu9krea_leds, ARRAY_SIZE(cpu9krea_leds));
 368         /* Push Buttons */
 369         cpu9krea_add_device_buttons();
 370 }
 371
 372 #ifdef CONFIG_MACH_CPU9260
 373 MACHINE_START(CPUAT9260, "Eukrea CPU9260")
 374 #else
 375 MACHINE_START(CPUAT9G20, "Eukrea CPU9G20")
 376 #endif
 377         /* Maintainer: Eric Benard - EUKREA Electromatique */
 378         .phys_io        = AT91_BASE_SYS,
 379         .io_pg_offst    = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
 380         .boot_params    = AT91_SDRAM_BASE + 0x100,
 381         .timer          = &at91sam926x_timer,
 382         .map_io         = cpu9krea_map_io,
 383         .init_irq       = cpu9krea_init_irq,
 384         .init_machine   = cpu9krea_board_init,
 385 MACHINE_END