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/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/clk.h>
  30 #include <linux/gpio_keys.h>
  31 #include <linux/input.h>
  32 #include <linux/mtd/physmap.h>
  33
  34 #include <asm/setup.h>
  35 #include <asm/mach-types.h>
  36 #include <asm/irq.h>
  37
  38 #include <asm/mach/arch.h>
  39 #include <asm/mach/map.h>
  40 #include <asm/mach/irq.h>
  41
  42 #include <mach/hardware.h>
  43 #include <mach/board.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_init_early(void)
  51 {
  52         /* Initialize processor: 18.432 MHz crystal */
  53         at91_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 /*
  85  * USB Host port
  86  */
  87 static struct at91_usbh_data __initdata cpu9krea_usbh_data = {
  88         .ports          = 2,
  89 };
  90
  91 /*
  92  * USB Device port
  93  */
  94 static struct at91_udc_data __initdata cpu9krea_udc_data = {
  95         .vbus_pin       = AT91_PIN_PC8,
  96         .pullup_pin     = 0,            /* pull-up driven by UDC */
  97 };
  98
  99 /*
 100  * MACB Ethernet device
 101  */
 102 static struct at91_eth_data __initdata cpu9krea_macb_data = {
 103         .is_rmii        = 1,
 104 };
 105
 106 /*
 107  * NAND flash
 108  */
 109 static struct atmel_nand_data __initdata cpu9krea_nand_data = {
 110         .ale            = 21,
 111         .cle            = 22,
 112         .rdy_pin        = AT91_PIN_PC13,
 113         .enable_pin     = AT91_PIN_PC14,
 114         .bus_width_16   = 0,
 115 };
 116
 117 #ifdef CONFIG_MACH_CPU9260
 118 static struct sam9_smc_config __initdata cpu9krea_nand_smc_config = {
 119         .ncs_read_setup         = 0,
 120         .nrd_setup              = 1,
 121         .ncs_write_setup        = 0,
 122         .nwe_setup              = 1,
 123
 124         .ncs_read_pulse         = 3,
 125         .nrd_pulse              = 3,
 126         .ncs_write_pulse        = 3,
 127         .nwe_pulse              = 3,
 128
 129         .read_cycle             = 5,
 130         .write_cycle            = 5,
 131
 132         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE
 133                 | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 134         .tdf_cycles             = 2,
 135 };
 136 #else
 137 static struct sam9_smc_config __initdata cpu9krea_nand_smc_config = {
 138         .ncs_read_setup         = 0,
 139         .nrd_setup              = 2,
 140         .ncs_write_setup        = 0,
 141         .nwe_setup              = 2,
 142
 143         .ncs_read_pulse         = 4,
 144         .nrd_pulse              = 4,
 145         .ncs_write_pulse        = 4,
 146         .nwe_pulse              = 4,
 147
 148         .read_cycle             = 7,
 149         .write_cycle            = 7,
 150
 151         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE
 152                 | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 153         .tdf_cycles             = 3,
 154 };
 155 #endif
 156
 157 static void __init cpu9krea_add_device_nand(void)
 158 {
 159         sam9_smc_configure(3, &cpu9krea_nand_smc_config);
 160         at91_add_device_nand(&cpu9krea_nand_data);
 161 }
 162
 163 /*
 164  * NOR flash
 165  */
 166 static struct physmap_flash_data cpuat9260_nor_data = {
 167         .width          = 2,
 168 };
 169
 170 #define NOR_BASE        AT91_CHIPSELECT_0
 171 #define NOR_SIZE        SZ_64M
 172
 173 static struct resource nor_flash_resources[] = {
 174         {
 175                 .start  = NOR_BASE,
 176                 .end    = NOR_BASE + NOR_SIZE - 1,
 177                 .flags  = IORESOURCE_MEM,
 178         }
 179 };
 180
 181 static struct platform_device cpu9krea_nor_flash = {
 182         .name           = "physmap-flash",
 183         .id             = 0,
 184         .dev            = {
 185                 .platform_data  = &cpuat9260_nor_data,
 186         },
 187         .resource       = nor_flash_resources,
 188         .num_resources  = ARRAY_SIZE(nor_flash_resources),
 189 };
 190
 191 #ifdef CONFIG_MACH_CPU9260
 192 static struct sam9_smc_config __initdata cpu9krea_nor_smc_config = {
 193         .ncs_read_setup         = 0,
 194         .nrd_setup              = 1,
 195         .ncs_write_setup        = 0,
 196         .nwe_setup              = 1,
 197
 198         .ncs_read_pulse         = 10,
 199         .nrd_pulse              = 10,
 200         .ncs_write_pulse        = 6,
 201         .nwe_pulse              = 6,
 202
 203         .read_cycle             = 12,
 204         .write_cycle            = 8,
 205
 206         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE
 207                         | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE
 208                         | AT91_SMC_DBW_16,
 209         .tdf_cycles             = 2,
 210 };
 211 #else
 212 static struct sam9_smc_config __initdata cpu9krea_nor_smc_config = {
 213         .ncs_read_setup         = 0,
 214         .nrd_setup              = 1,
 215         .ncs_write_setup        = 0,
 216         .nwe_setup              = 1,
 217
 218         .ncs_read_pulse         = 13,
 219         .nrd_pulse              = 13,
 220         .ncs_write_pulse        = 8,
 221         .nwe_pulse              = 8,
 222
 223         .read_cycle             = 15,
 224         .write_cycle            = 10,
 225
 226         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE
 227                         | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE
 228                         | AT91_SMC_DBW_16,
 229         .tdf_cycles             = 2,
 230 };
 231 #endif
 232
 233 static __init void cpu9krea_add_device_nor(void)
 234 {
 235         unsigned long csa;
 236
 237         csa = at91_sys_read(AT91_MATRIX_EBICSA);
 238         at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_VDDIOMSEL_3_3V);
 239
 240         /* configure chip-select 0 (NOR) */
 241         sam9_smc_configure(0, &cpu9krea_nor_smc_config);
 242
 243         platform_device_register(&cpu9krea_nor_flash);
 244 }
 245
 246 /*
 247  * LEDs
 248  */
 249 static struct gpio_led cpu9krea_leds[] = {
 250         {       /* LED1 */
 251                 .name                   = "LED1",
 252                 .gpio                   = AT91_PIN_PC11,
 253                 .active_low             = 1,
 254                 .default_trigger        = "timer",
 255         },
 256         {       /* LED2 */
 257                 .name                   = "LED2",
 258                 .gpio                   = AT91_PIN_PC12,
 259                 .active_low             = 1,
 260                 .default_trigger        = "heartbeat",
 261         },
 262         {       /* LED3 */
 263                 .name                   = "LED3",
 264                 .gpio                   = AT91_PIN_PC7,
 265                 .active_low             = 1,
 266                 .default_trigger        = "none",
 267         },
 268         {       /* LED4 */
 269                 .name                   = "LED4",
 270                 .gpio                   = AT91_PIN_PC9,
 271                 .active_low             = 1,
 272                 .default_trigger        = "none",
 273         }
 274 };
 275
 276 static struct i2c_board_info __initdata cpu9krea_i2c_devices[] = {
 277         {
 278                 I2C_BOARD_INFO("rtc-ds1307", 0x68),
 279                 .type   = "ds1339",
 280         },
 281 };
 282
 283 /*
 284  * GPIO Buttons
 285  */
 286 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 287 static struct gpio_keys_button cpu9krea_buttons[] = {
 288         {
 289                 .gpio           = AT91_PIN_PC3,
 290                 .code           = BTN_0,
 291                 .desc           = "BP1",
 292                 .active_low     = 1,
 293                 .wakeup         = 1,
 294         },
 295         {
 296                 .gpio           = AT91_PIN_PB20,
 297                 .code           = BTN_1,
 298                 .desc           = "BP2",
 299                 .active_low     = 1,
 300                 .wakeup         = 1,
 301         }
 302 };
 303
 304 static struct gpio_keys_platform_data cpu9krea_button_data = {
 305         .buttons        = cpu9krea_buttons,
 306         .nbuttons       = ARRAY_SIZE(cpu9krea_buttons),
 307 };
 308
 309 static struct platform_device cpu9krea_button_device = {
 310         .name           = "gpio-keys",
 311         .id             = -1,
 312         .num_resources  = 0,
 313         .dev            = {
 314                 .platform_data  = &cpu9krea_button_data,
 315         }
 316 };
 317
 318 static void __init cpu9krea_add_device_buttons(void)
 319 {
 320         at91_set_gpio_input(AT91_PIN_PC3, 1);   /* BP1 */
 321         at91_set_deglitch(AT91_PIN_PC3, 1);
 322         at91_set_gpio_input(AT91_PIN_PB20, 1);  /* BP2 */
 323         at91_set_deglitch(AT91_PIN_PB20, 1);
 324
 325         platform_device_register(&cpu9krea_button_device);
 326 }
 327 #else
 328 static void __init cpu9krea_add_device_buttons(void)
 329 {
 330 }
 331 #endif
 332
 333 /*
 334  * MCI (SD/MMC)
 335  */
 336 static struct at91_mmc_data __initdata cpu9krea_mmc_data = {
 337         .slot_b         = 0,
 338         .wire4          = 1,
 339         .det_pin        = AT91_PIN_PA29,
 340 };
 341
 342 static void __init cpu9krea_board_init(void)
 343 {
 344         /* NOR */
 345         cpu9krea_add_device_nor();
 346         /* Serial */
 347         at91_add_device_serial();
 348         /* USB Host */
 349         at91_add_device_usbh(&cpu9krea_usbh_data);
 350         /* USB Device */
 351         at91_add_device_udc(&cpu9krea_udc_data);
 352         /* NAND */
 353         cpu9krea_add_device_nand();
 354         /* Ethernet */
 355         at91_add_device_eth(&cpu9krea_macb_data);
 356         /* MMC */
 357         at91_add_device_mmc(0, &cpu9krea_mmc_data);
 358         /* I2C */
 359         at91_add_device_i2c(cpu9krea_i2c_devices,
 360                 ARRAY_SIZE(cpu9krea_i2c_devices));
 361         /* LEDs */
 362         at91_gpio_leds(cpu9krea_leds, ARRAY_SIZE(cpu9krea_leds));
 363         /* Push Buttons */
 364         cpu9krea_add_device_buttons();
 365 }
 366
 367 #ifdef CONFIG_MACH_CPU9260
 368 MACHINE_START(CPUAT9260, "Eukrea CPU9260")
 369 #else
 370 MACHINE_START(CPUAT9G20, "Eukrea CPU9G20")
 371 #endif
 372         /* Maintainer: Eric Benard - EUKREA Electromatique */
 373         .timer          = &at91sam926x_timer,
 374         .map_io         = at91_map_io,
 375         .init_early     = cpu9krea_init_early,
 376         .init_irq       = at91_init_irq_default,
 377         .init_machine   = cpu9krea_board_init,
 378 MACHINE_END