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/platform_data/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/at91sam9_smc.h>
  48 #include <mach/system_rev.h>
  49
  50 #include "at91_aic.h"
  51 #include "at91_shdwc.h"
  52 #include "board.h"
  53 #include "sam9_smc.h"
  54 #include "generic.h"
  55
  56
  57 static void __init ek_init_early(void)
  58 {
  59         /* Initialize processor: 16.367 MHz crystal */
  60         at91_initialize(16367660);
  61 }
  62
  63 /*
  64  * USB Host port
  65  */
  66 static struct at91_usbh_data __initdata ek_usbh_data = {
  67         .ports          = 2,
  68         .vbus_pin       = { AT91_PIN_PA24, AT91_PIN_PA21 },
  69         .vbus_pin_active_low = {1, 1},
  70         .overcurrent_pin= {-EINVAL, -EINVAL},
  71 };
  72
  73 /*
  74  * USB Device port
  75  */
  76 static struct at91_udc_data __initdata ek_udc_data = {
  77         .vbus_pin       = AT91_PIN_PA25,
  78         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
  79 };
  80
  81
  82 /*
  83  * ADS7846 Touchscreen
  84  */
  85 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  86 static int ads7843_pendown_state(void)
  87 {
  88         return !at91_get_gpio_value(AT91_PIN_PA15);     /* Touchscreen PENIRQ */
  89 }
  90
  91 static struct ads7846_platform_data ads_info = {
  92         .model                  = 7843,
  93         .x_min                  = 150,
  94         .x_max                  = 3830,
  95         .y_min                  = 190,
  96         .y_max                  = 3830,
  97         .vref_delay_usecs       = 100,
  98         .x_plate_ohms           = 450,
  99         .y_plate_ohms           = 250,
 100         .pressure_max           = 15000,
 101         .debounce_max           = 1,
 102         .debounce_rep           = 0,
 103         .debounce_tol           = (~0),
 104         .get_pendown_state      = ads7843_pendown_state,
 105 };
 106
 107 static void __init ek_add_device_ts(void)
 108 {
 109         at91_set_B_periph(AT91_PIN_PA15, 1);    /* External IRQ1, with pullup */
 110         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* Touchscreen BUSY signal */
 111 }
 112 #else
 113 static void __init ek_add_device_ts(void) {}
 114 #endif
 115
 116 /*
 117  * SPI devices.
 118  */
 119 static struct spi_board_info ek_spi_devices[] = {
 120 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 121         {       /* DataFlash card */
 122                 .modalias       = "mtd_dataflash",
 123                 .chip_select    = 0,
 124                 .max_speed_hz   = 15 * 1000 * 1000,
 125                 .bus_num        = 0,
 126         },
 127 #endif
 128 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 129         {
 130                 .modalias       = "ads7846",
 131                 .chip_select    = 3,
 132                 .max_speed_hz   = 125000 * 26,  /* (max sample rate @ 3V) * (cmd + data + overhead) */
 133                 .bus_num        = 0,
 134                 .platform_data  = &ads_info,
 135                 .irq            = NR_IRQS_LEGACY + AT91SAM9263_ID_IRQ1,
 136         },
 137 #endif
 138 };
 139
 140
 141 /*
 142  * MCI (SD/MMC)
 143  */
 144 static struct mci_platform_data __initdata mci1_data = {
 145         .slot[0] = {
 146                 .bus_width      = 4,
 147                 .detect_pin     = AT91_PIN_PE18,
 148                 .wp_pin         = AT91_PIN_PE19,
 149         },
 150 };
 151
 152
 153 /*
 154  * MACB Ethernet device
 155  */
 156 static struct macb_platform_data __initdata ek_macb_data = {
 157         .phy_irq_pin    = AT91_PIN_PE31,
 158         .is_rmii        = 1,
 159 };
 160
 161
 162 /*
 163  * NAND flash
 164  */
 165 static struct mtd_partition __initdata ek_nand_partition[] = {
 166         {
 167                 .name   = "Partition 1",
 168                 .offset = 0,
 169                 .size   = SZ_64M,
 170         },
 171         {
 172                 .name   = "Partition 2",
 173                 .offset = MTDPART_OFS_NXTBLK,
 174                 .size   = MTDPART_SIZ_FULL,
 175         },
 176 };
 177
 178 static struct atmel_nand_data __initdata ek_nand_data = {
 179         .ale            = 21,
 180         .cle            = 22,
 181         .det_pin        = -EINVAL,
 182         .rdy_pin        = AT91_PIN_PA22,
 183         .enable_pin     = AT91_PIN_PD15,
 184         .ecc_mode       = NAND_ECC_SOFT,
 185         .on_flash_bbt   = 1,
 186         .parts          = ek_nand_partition,
 187         .num_parts      = ARRAY_SIZE(ek_nand_partition),
 188 };
 189
 190 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 191         .ncs_read_setup         = 0,
 192         .nrd_setup              = 1,
 193         .ncs_write_setup        = 0,
 194         .nwe_setup              = 1,
 195
 196         .ncs_read_pulse         = 3,
 197         .nrd_pulse              = 3,
 198         .ncs_write_pulse        = 3,
 199         .nwe_pulse              = 3,
 200
 201         .read_cycle             = 5,
 202         .write_cycle            = 5,
 203
 204         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 205         .tdf_cycles             = 2,
 206 };
 207
 208 static void __init ek_add_device_nand(void)
 209 {
 210         ek_nand_data.bus_width_16 = board_have_nand_16bit();
 211         /* setup bus-width (8 or 16) */
 212         if (ek_nand_data.bus_width_16)
 213                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 214         else
 215                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 216
 217         /* configure chip-select 3 (NAND) */
 218         sam9_smc_configure(0, 3, &ek_nand_smc_config);
 219
 220         at91_add_device_nand(&ek_nand_data);
 221 }
 222
 223
 224 /*
 225  * I2C devices
 226  */
 227 static struct at24_platform_data at24c512 = {
 228         .byte_len       = SZ_512K / 8,
 229         .page_size      = 128,
 230         .flags          = AT24_FLAG_ADDR16,
 231 };
 232
 233
 234 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 235         {
 236                 I2C_BOARD_INFO("24c512", 0x50),
 237                 .platform_data = &at24c512,
 238         },
 239         /* more devices can be added using expansion connectors */
 240 };
 241
 242 /*
 243  * LCD Controller
 244  */
 245 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
 246 static struct fb_videomode at91_tft_vga_modes[] = {
 247         {
 248                 .name           = "TX09D50VM1CCA @ 60",
 249                 .refresh        = 60,
 250                 .xres           = 240,          .yres           = 320,
 251                 .pixclock       = KHZ2PICOS(4965),
 252
 253                 .left_margin    = 1,            .right_margin   = 33,
 254                 .upper_margin   = 1,            .lower_margin   = 0,
 255                 .hsync_len      = 5,            .vsync_len      = 1,
 256
 257                 .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 258                 .vmode          = FB_VMODE_NONINTERLACED,
 259         },
 260 };
 261
 262 static struct fb_monspecs at91fb_default_monspecs = {
 263         .manufacturer   = "HIT",
 264         .monitor        = "TX09D70VM1CCA",
 265
 266         .modedb         = at91_tft_vga_modes,
 267         .modedb_len     = ARRAY_SIZE(at91_tft_vga_modes),
 268         .hfmin          = 15000,
 269         .hfmax          = 64000,
 270         .vfmin          = 50,
 271         .vfmax          = 150,
 272 };
 273
 274 #define AT91SAM9263_DEFAULT_LCDCON2     (ATMEL_LCDC_MEMOR_LITTLE \
 275                                         | ATMEL_LCDC_DISTYPE_TFT \
 276                                         | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
 277
 278 static void at91_lcdc_power_control(struct atmel_lcdfb_pdata *pdata, int on)
 279 {
 280         at91_set_gpio_value(AT91_PIN_PA30, on);
 281 }
 282
 283 /* Driver datas */
 284 static struct atmel_lcdfb_pdata __initdata ek_lcdc_data = {
 285         .lcdcon_is_backlight            = true,
 286         .default_bpp                    = 16,
 287         .default_dmacon                 = ATMEL_LCDC_DMAEN,
 288         .default_lcdcon2                = AT91SAM9263_DEFAULT_LCDCON2,
 289         .default_monspecs               = &at91fb_default_monspecs,
 290         .atmel_lcdfb_power_control      = at91_lcdc_power_control,
 291         .guard_time                     = 1,
 292 };
 293
 294 #else
 295 static struct atmel_lcdfb_pdata __initdata ek_lcdc_data;
 296 #endif
 297
 298
 299 /*
 300  * GPIO Buttons
 301  */
 302 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 303 static struct gpio_keys_button ek_buttons[] = {
 304         {       /* BP1, "leftclic" */
 305                 .code           = BTN_LEFT,
 306                 .gpio           = AT91_PIN_PC5,
 307                 .active_low     = 1,
 308                 .desc           = "left_click",
 309                 .wakeup         = 1,
 310         },
 311         {       /* BP2, "rightclic" */
 312                 .code           = BTN_RIGHT,
 313                 .gpio           = AT91_PIN_PC4,
 314                 .active_low     = 1,
 315                 .desc           = "right_click",
 316                 .wakeup         = 1,
 317         }
 318 };
 319
 320 static struct gpio_keys_platform_data ek_button_data = {
 321         .buttons        = ek_buttons,
 322         .nbuttons       = ARRAY_SIZE(ek_buttons),
 323 };
 324
 325 static struct platform_device ek_button_device = {
 326         .name           = "gpio-keys",
 327         .id             = -1,
 328         .num_resources  = 0,
 329         .dev            = {
 330                 .platform_data  = &ek_button_data,
 331         }
 332 };
 333
 334 static void __init ek_add_device_buttons(void)
 335 {
 336         at91_set_GPIO_periph(AT91_PIN_PC5, 1);  /* left button */
 337         at91_set_deglitch(AT91_PIN_PC5, 1);
 338         at91_set_GPIO_periph(AT91_PIN_PC4, 1);  /* right button */
 339         at91_set_deglitch(AT91_PIN_PC4, 1);
 340
 341         platform_device_register(&ek_button_device);
 342 }
 343 #else
 344 static void __init ek_add_device_buttons(void) {}
 345 #endif
 346
 347
 348 /*
 349  * AC97
 350  * reset_pin is not connected: NRST
 351  */
 352 static struct ac97c_platform_data ek_ac97_data = {
 353         .reset_pin      = -EINVAL,
 354 };
 355
 356
 357 /*
 358  * LEDs ... these could all be PWM-driven, for variable brightness
 359  */
 360 static struct gpio_led ek_leds[] = {
 361         {       /* "right" led, green, userled2 (could be driven by pwm2) */
 362                 .name                   = "ds2",
 363                 .gpio                   = AT91_PIN_PC29,
 364                 .active_low             = 1,
 365                 .default_trigger        = "nand-disk",
 366         },
 367         {       /* "power" led, yellow (could be driven by pwm0) */
 368                 .name                   = "ds3",
 369                 .gpio                   = AT91_PIN_PB7,
 370                 .default_trigger        = "heartbeat",
 371         }
 372 };
 373
 374 /*
 375  * PWM Leds
 376  */
 377 static struct gpio_led ek_pwm_led[] = {
 378         /* For now only DS1 is PWM-driven (by pwm1) */
 379         {
 380                 .name                   = "ds1",
 381                 .gpio                   = 1,    /* is PWM channel number */
 382                 .active_low             = 1,
 383                 .default_trigger        = "none",
 384         }
 385 };
 386
 387 /*
 388  * CAN
 389  */
 390 static void sam9263ek_transceiver_switch(int on)
 391 {
 392         if (on) {
 393                 at91_set_gpio_output(AT91_PIN_PA18, 1); /* CANRXEN */
 394                 at91_set_gpio_output(AT91_PIN_PA19, 0); /* CANRS */
 395         } else {
 396                 at91_set_gpio_output(AT91_PIN_PA18, 0); /* CANRXEN */
 397                 at91_set_gpio_output(AT91_PIN_PA19, 1); /* CANRS */
 398         }
 399 }
 400
 401 static struct at91_can_data ek_can_data = {
 402         .transceiver_switch = sam9263ek_transceiver_switch,
 403 };
 404
 405 static void __init ek_board_init(void)
 406 {
 407         /* Serial */
 408         /* DBGU on ttyS0. (Rx & Tx only) */
 409         at91_register_uart(0, 0, 0);
 410
 411         /* USART0 on ttyS1. (Rx, Tx, RTS, CTS) */
 412         at91_register_uart(AT91SAM9263_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS);
 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_mci(1, &mci1_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         .init_time      = at91sam926x_pit_init,
 447         .map_io         = at91_map_io,
 448         .handle_irq     = at91_aic_handle_irq,
 449         .init_early     = ek_init_early,
 450         .init_irq       = at91_init_irq_default,
 451         .init_machine   = ek_board_init,
 452 MACHINE_END