arch/arm/mach-at91/board-sam9263ek.c

   1 /*
   2  * linux/arch/arm/mach-at91/board-sam9263ek.c
   3  *
   4  *  Copyright (C) 2005 SAN People
   5  *  Copyright (C) 2007 Atmel Corporation.
   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/ads7846.h>
  30 #include <linux/i2c/at24.h>
  31 #include <linux/fb.h>
  32 #include <linux/gpio_keys.h>
  33 #include <linux/input.h>
  34 #include <linux/leds.h>
  35
  36 #include <video/atmel_lcdc.h>
  37
  38 #include <asm/setup.h>
  39 #include <asm/mach-types.h>
  40 #include <asm/irq.h>
  41
  42 #include <asm/mach/arch.h>
  43 #include <asm/mach/map.h>
  44 #include <asm/mach/irq.h>
  45
  46 #include <mach/hardware.h>
  47 #include <mach/board.h>
  48 #include <mach/at91sam9_smc.h>
  49 #include <mach/at91_shdwc.h>
  50 #include <mach/system_rev.h>
  51
  52 #include "sam9_smc.h"
  53 #include "generic.h"
  54
  55
  56 static void __init ek_init_early(void)
  57 {
  58         /* Initialize processor: 16.367 MHz crystal */
  59         at91_initialize(16367660);
  60
  61         /* DBGU on ttyS0. (Rx & Tx only) */
  62         at91_register_uart(0, 0, 0);
  63
  64         /* USART0 on ttyS1. (Rx, Tx, RTS, CTS) */
  65         at91_register_uart(AT91SAM9263_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS);
  66
  67         /* set serial console to ttyS0 (ie, DBGU) */
  68         at91_set_serial_console(0);
  69 }
  70
  71 /*
  72  * USB Host port
  73  */
  74 static struct at91_usbh_data __initdata ek_usbh_data = {
  75         .ports          = 2,
  76         .vbus_pin       = { AT91_PIN_PA24, AT91_PIN_PA21 },
  77         .vbus_pin_active_low = {1, 1},
  78         .overcurrent_pin= {-EINVAL, -EINVAL},
  79 };
  80
  81 /*
  82  * USB Device port
  83  */
  84 static struct at91_udc_data __initdata ek_udc_data = {
  85         .vbus_pin       = AT91_PIN_PA25,
  86         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
  87 };
  88
  89
  90 /*
  91  * ADS7846 Touchscreen
  92  */
  93 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  94 static int ads7843_pendown_state(void)
  95 {
  96         return !at91_get_gpio_value(AT91_PIN_PA15);     /* Touchscreen PENIRQ */
  97 }
  98
  99 static struct ads7846_platform_data ads_info = {
 100         .model                  = 7843,
 101         .x_min                  = 150,
 102         .x_max                  = 3830,
 103         .y_min                  = 190,
 104         .y_max                  = 3830,
 105         .vref_delay_usecs       = 100,
 106         .x_plate_ohms           = 450,
 107         .y_plate_ohms           = 250,
 108         .pressure_max           = 15000,
 109         .debounce_max           = 1,
 110         .debounce_rep           = 0,
 111         .debounce_tol           = (~0),
 112         .get_pendown_state      = ads7843_pendown_state,
 113 };
 114
 115 static void __init ek_add_device_ts(void)
 116 {
 117         at91_set_B_periph(AT91_PIN_PA15, 1);    /* External IRQ1, with pullup */
 118         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* Touchscreen BUSY signal */
 119 }
 120 #else
 121 static void __init ek_add_device_ts(void) {}
 122 #endif
 123
 124 /*
 125  * SPI devices.
 126  */
 127 static struct spi_board_info ek_spi_devices[] = {
 128 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 129         {       /* DataFlash card */
 130                 .modalias       = "mtd_dataflash",
 131                 .chip_select    = 0,
 132                 .max_speed_hz   = 15 * 1000 * 1000,
 133                 .bus_num        = 0,
 134         },
 135 #endif
 136 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 137         {
 138                 .modalias       = "ads7846",
 139                 .chip_select    = 3,
 140                 .max_speed_hz   = 125000 * 26,  /* (max sample rate @ 3V) * (cmd + data + overhead) */
 141                 .bus_num        = 0,
 142                 .platform_data  = &ads_info,
 143                 .irq            = AT91SAM9263_ID_IRQ1,
 144         },
 145 #endif
 146 };
 147
 148
 149 /*
 150  * MCI (SD/MMC)
 151  */
 152 static struct at91_mmc_data __initdata ek_mmc_data = {
 153         .wire4          = 1,
 154         .det_pin        = AT91_PIN_PE18,
 155         .wp_pin         = AT91_PIN_PE19,
 156         .vcc_pin        = -EINVAL,
 157 };
 158
 159
 160 /*
 161  * MACB Ethernet device
 162  */
 163 static struct macb_platform_data __initdata ek_macb_data = {
 164         .phy_irq_pin    = AT91_PIN_PE31,
 165         .is_rmii        = 1,
 166 };
 167
 168
 169 /*
 170  * NAND flash
 171  */
 172 static struct mtd_partition __initdata ek_nand_partition[] = {
 173         {
 174                 .name   = "Partition 1",
 175                 .offset = 0,
 176                 .size   = SZ_64M,
 177         },
 178         {
 179                 .name   = "Partition 2",
 180                 .offset = MTDPART_OFS_NXTBLK,
 181                 .size   = MTDPART_SIZ_FULL,
 182         },
 183 };
 184
 185 static struct atmel_nand_data __initdata ek_nand_data = {
 186         .ale            = 21,
 187         .cle            = 22,
 188         .det_pin        = -EINVAL,
 189         .rdy_pin        = AT91_PIN_PA22,
 190         .enable_pin     = AT91_PIN_PD15,
 191         .parts          = ek_nand_partition,
 192         .num_parts      = ARRAY_SIZE(ek_nand_partition),
 193 };
 194
 195 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 196         .ncs_read_setup         = 0,
 197         .nrd_setup              = 1,
 198         .ncs_write_setup        = 0,
 199         .nwe_setup              = 1,
 200
 201         .ncs_read_pulse         = 3,
 202         .nrd_pulse              = 3,
 203         .ncs_write_pulse        = 3,
 204         .nwe_pulse              = 3,
 205
 206         .read_cycle             = 5,
 207         .write_cycle            = 5,
 208
 209         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 210         .tdf_cycles             = 2,
 211 };
 212
 213 static void __init ek_add_device_nand(void)
 214 {
 215         ek_nand_data.bus_width_16 = board_have_nand_16bit();
 216         /* setup bus-width (8 or 16) */
 217         if (ek_nand_data.bus_width_16)
 218                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 219         else
 220                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 221
 222         /* configure chip-select 3 (NAND) */
 223         sam9_smc_configure(0, 3, &ek_nand_smc_config);
 224
 225         at91_add_device_nand(&ek_nand_data);
 226 }
 227
 228
 229 /*
 230  * I2C devices
 231  */
 232 static struct at24_platform_data at24c512 = {
 233         .byte_len       = SZ_512K / 8,
 234         .page_size      = 128,
 235         .flags          = AT24_FLAG_ADDR16,
 236 };
 237
 238
 239 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 240         {
 241                 I2C_BOARD_INFO("24c512", 0x50),
 242                 .platform_data = &at24c512,
 243         },
 244         /* more devices can be added using expansion connectors */
 245 };
 246
 247 /*
 248  * LCD Controller
 249  */
 250 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
 251 static struct fb_videomode at91_tft_vga_modes[] = {
 252         {
 253                 .name           = "TX09D50VM1CCA @ 60",
 254                 .refresh        = 60,
 255                 .xres           = 240,          .yres           = 320,
 256                 .pixclock       = KHZ2PICOS(4965),
 257
 258                 .left_margin    = 1,            .right_margin   = 33,
 259                 .upper_margin   = 1,            .lower_margin   = 0,
 260                 .hsync_len      = 5,            .vsync_len      = 1,
 261
 262                 .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 263                 .vmode          = FB_VMODE_NONINTERLACED,
 264         },
 265 };
 266
 267 static struct fb_monspecs at91fb_default_monspecs = {
 268         .manufacturer   = "HIT",
 269         .monitor        = "TX09D70VM1CCA",
 270
 271         .modedb         = at91_tft_vga_modes,
 272         .modedb_len     = ARRAY_SIZE(at91_tft_vga_modes),
 273         .hfmin          = 15000,
 274         .hfmax          = 64000,
 275         .vfmin          = 50,
 276         .vfmax          = 150,
 277 };
 278
 279 #define AT91SAM9263_DEFAULT_LCDCON2     (ATMEL_LCDC_MEMOR_LITTLE \
 280                                         | ATMEL_LCDC_DISTYPE_TFT \
 281                                         | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
 282
 283 static void at91_lcdc_power_control(int on)
 284 {
 285         at91_set_gpio_value(AT91_PIN_PA30, on);
 286 }
 287
 288 /* Driver datas */
 289 static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
 290         .lcdcon_is_backlight            = true,
 291         .default_bpp                    = 16,
 292         .default_dmacon                 = ATMEL_LCDC_DMAEN,
 293         .default_lcdcon2                = AT91SAM9263_DEFAULT_LCDCON2,
 294         .default_monspecs               = &at91fb_default_monspecs,
 295         .atmel_lcdfb_power_control      = at91_lcdc_power_control,
 296         .guard_time                     = 1,
 297 };
 298
 299 #else
 300 static struct atmel_lcdfb_info __initdata ek_lcdc_data;
 301 #endif
 302
 303
 304 /*
 305  * GPIO Buttons
 306  */
 307 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 308 static struct gpio_keys_button ek_buttons[] = {
 309         {       /* BP1, "leftclic" */
 310                 .code           = BTN_LEFT,
 311                 .gpio           = AT91_PIN_PC5,
 312                 .active_low     = 1,
 313                 .desc           = "left_click",
 314                 .wakeup         = 1,
 315         },
 316         {       /* BP2, "rightclic" */
 317                 .code           = BTN_RIGHT,
 318                 .gpio           = AT91_PIN_PC4,
 319                 .active_low     = 1,
 320                 .desc           = "right_click",
 321                 .wakeup         = 1,
 322         }
 323 };
 324
 325 static struct gpio_keys_platform_data ek_button_data = {
 326         .buttons        = ek_buttons,
 327         .nbuttons       = ARRAY_SIZE(ek_buttons),
 328 };
 329
 330 static struct platform_device ek_button_device = {
 331         .name           = "gpio-keys",
 332         .id             = -1,
 333         .num_resources  = 0,
 334         .dev            = {
 335                 .platform_data  = &ek_button_data,
 336         }
 337 };
 338
 339 static void __init ek_add_device_buttons(void)
 340 {
 341         at91_set_GPIO_periph(AT91_PIN_PC5, 1);  /* left button */
 342         at91_set_deglitch(AT91_PIN_PC5, 1);
 343         at91_set_GPIO_periph(AT91_PIN_PC4, 1);  /* right button */
 344         at91_set_deglitch(AT91_PIN_PC4, 1);
 345
 346         platform_device_register(&ek_button_device);
 347 }
 348 #else
 349 static void __init ek_add_device_buttons(void) {}
 350 #endif
 351
 352
 353 /*
 354  * AC97
 355  * reset_pin is not connected: NRST
 356  */
 357 static struct ac97c_platform_data ek_ac97_data = {
 358         .reset_pin      = -EINVAL,
 359 };
 360
 361
 362 /*
 363  * LEDs ... these could all be PWM-driven, for variable brightness
 364  */
 365 static struct gpio_led ek_leds[] = {
 366         {       /* "right" led, green, userled2 (could be driven by pwm2) */
 367                 .name                   = "ds2",
 368                 .gpio                   = AT91_PIN_PC29,
 369                 .active_low             = 1,
 370                 .default_trigger        = "nand-disk",
 371         },
 372         {       /* "power" led, yellow (could be driven by pwm0) */
 373                 .name                   = "ds3",
 374                 .gpio                   = AT91_PIN_PB7,
 375                 .default_trigger        = "heartbeat",
 376         }
 377 };
 378
 379 /*
 380  * PWM Leds
 381  */
 382 static struct gpio_led ek_pwm_led[] = {
 383         /* For now only DS1 is PWM-driven (by pwm1) */
 384         {
 385                 .name                   = "ds1",
 386                 .gpio                   = 1,    /* is PWM channel number */
 387                 .active_low             = 1,
 388                 .default_trigger        = "none",
 389         }
 390 };
 391
 392 /*
 393  * CAN
 394  */
 395 static void sam9263ek_transceiver_switch(int on)
 396 {
 397         if (on) {
 398                 at91_set_gpio_output(AT91_PIN_PA18, 1); /* CANRXEN */
 399                 at91_set_gpio_output(AT91_PIN_PA19, 0); /* CANRS */
 400         } else {
 401                 at91_set_gpio_output(AT91_PIN_PA18, 0); /* CANRXEN */
 402                 at91_set_gpio_output(AT91_PIN_PA19, 1); /* CANRS */
 403         }
 404 }
 405
 406 static struct at91_can_data ek_can_data = {
 407         .transceiver_switch = sam9263ek_transceiver_switch,
 408 };
 409
 410 static void __init ek_board_init(void)
 411 {
 412         /* Serial */
 413         at91_add_device_serial();
 414         /* USB Host */
 415         at91_add_device_usbh(&ek_usbh_data);
 416         /* USB Device */
 417         at91_add_device_udc(&ek_udc_data);
 418         /* SPI */
 419         at91_set_gpio_output(AT91_PIN_PE20, 1);         /* select spi0 clock */
 420         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 421         /* Touchscreen */
 422         ek_add_device_ts();
 423         /* MMC */
 424         at91_add_device_mmc(1, &ek_mmc_data);
 425         /* Ethernet */
 426         at91_add_device_eth(&ek_macb_data);
 427         /* NAND */
 428         ek_add_device_nand();
 429         /* I2C */
 430         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 431         /* LCD Controller */
 432         at91_add_device_lcdc(&ek_lcdc_data);
 433         /* Push Buttons */
 434         ek_add_device_buttons();
 435         /* AC97 */
 436         at91_add_device_ac97(&ek_ac97_data);
 437         /* LEDs */
 438         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 439         at91_pwm_leds(ek_pwm_led, ARRAY_SIZE(ek_pwm_led));
 440         /* CAN */
 441         at91_add_device_can(&ek_can_data);
 442 }
 443
 444 MACHINE_START(AT91SAM9263EK, "Atmel AT91SAM9263-EK")
 445         /* Maintainer: Atmel */
 446         .timer          = &at91sam926x_timer,
 447         .map_io         = at91_map_io,
 448         .init_early     = ek_init_early,
 449         .init_irq       = at91_init_irq_default,
 450         .init_machine   = ek_board_init,
 451 MACHINE_END