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 #include <linux/pwm.h>
  36 #include <linux/leds_pwm.h>
  37
  38 #include <video/atmel_lcdc.h>
  39
  40 #include <asm/setup.h>
  41 #include <asm/mach-types.h>
  42 #include <asm/irq.h>
  43
  44 #include <asm/mach/arch.h>
  45 #include <asm/mach/map.h>
  46 #include <asm/mach/irq.h>
  47
  48 #include <mach/hardware.h>
  49 #include <mach/at91sam9_smc.h>
  50 #include <mach/system_rev.h>
  51
  52 #include "at91_aic.h"
  53 #include "board.h"
  54 #include "sam9_smc.h"
  55 #include "generic.h"
  56 #include "gpio.h"
  57
  58
  59 static void __init ek_init_early(void)
  60 {
  61         /* Initialize processor: 16.367 MHz crystal */
  62         at91_initialize(16367660);
  63 }
  64
  65 /*
  66  * USB Host port
  67  */
  68 static struct at91_usbh_data __initdata ek_usbh_data = {
  69         .ports          = 2,
  70         .vbus_pin       = { AT91_PIN_PA24, AT91_PIN_PA21 },
  71         .vbus_pin_active_low = {1, 1},
  72         .overcurrent_pin= {-EINVAL, -EINVAL},
  73 };
  74
  75 /*
  76  * USB Device port
  77  */
  78 static struct at91_udc_data __initdata ek_udc_data = {
  79         .vbus_pin       = AT91_PIN_PA25,
  80         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
  81 };
  82
  83
  84 /*
  85  * ADS7846 Touchscreen
  86  */
  87 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  88 static int ads7843_pendown_state(void)
  89 {
  90         return !at91_get_gpio_value(AT91_PIN_PA15);     /* Touchscreen PENIRQ */
  91 }
  92
  93 static struct ads7846_platform_data ads_info = {
  94         .model                  = 7843,
  95         .x_min                  = 150,
  96         .x_max                  = 3830,
  97         .y_min                  = 190,
  98         .y_max                  = 3830,
  99         .vref_delay_usecs       = 100,
 100         .x_plate_ohms           = 450,
 101         .y_plate_ohms           = 250,
 102         .pressure_max           = 15000,
 103         .debounce_max           = 1,
 104         .debounce_rep           = 0,
 105         .debounce_tol           = (~0),
 106         .get_pendown_state      = ads7843_pendown_state,
 107 };
 108
 109 static void __init ek_add_device_ts(void)
 110 {
 111         at91_set_B_periph(AT91_PIN_PA15, 1);    /* External IRQ1, with pullup */
 112         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* Touchscreen BUSY signal */
 113 }
 114 #else
 115 static void __init ek_add_device_ts(void) {}
 116 #endif
 117
 118 /*
 119  * SPI devices.
 120  */
 121 static struct spi_board_info ek_spi_devices[] = {
 122 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 123         {       /* DataFlash card */
 124                 .modalias       = "mtd_dataflash",
 125                 .chip_select    = 0,
 126                 .max_speed_hz   = 15 * 1000 * 1000,
 127                 .bus_num        = 0,
 128         },
 129 #endif
 130 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 131         {
 132                 .modalias       = "ads7846",
 133                 .chip_select    = 3,
 134                 .max_speed_hz   = 125000 * 26,  /* (max sample rate @ 3V) * (cmd + data + overhead) */
 135                 .bus_num        = 0,
 136                 .platform_data  = &ads_info,
 137                 .irq            = NR_IRQS_LEGACY + AT91SAM9263_ID_IRQ1,
 138         },
 139 #endif
 140 };
 141
 142
 143 /*
 144  * MCI (SD/MMC)
 145  */
 146 static struct mci_platform_data __initdata mci1_data = {
 147         .slot[0] = {
 148                 .bus_width      = 4,
 149                 .detect_pin     = AT91_PIN_PE18,
 150                 .wp_pin         = AT91_PIN_PE19,
 151         },
 152 };
 153
 154
 155 /*
 156  * MACB Ethernet device
 157  */
 158 static struct macb_platform_data __initdata ek_macb_data = {
 159         .phy_irq_pin    = AT91_PIN_PE31,
 160         .is_rmii        = 1,
 161 };
 162
 163
 164 /*
 165  * NAND flash
 166  */
 167 static struct mtd_partition __initdata ek_nand_partition[] = {
 168         {
 169                 .name   = "Partition 1",
 170                 .offset = 0,
 171                 .size   = SZ_64M,
 172         },
 173         {
 174                 .name   = "Partition 2",
 175                 .offset = MTDPART_OFS_NXTBLK,
 176                 .size   = MTDPART_SIZ_FULL,
 177         },
 178 };
 179
 180 static struct atmel_nand_data __initdata ek_nand_data = {
 181         .ale            = 21,
 182         .cle            = 22,
 183         .det_pin        = -EINVAL,
 184         .rdy_pin        = AT91_PIN_PA22,
 185         .enable_pin     = AT91_PIN_PD15,
 186         .ecc_mode       = NAND_ECC_SOFT,
 187         .on_flash_bbt   = 1,
 188         .parts          = ek_nand_partition,
 189         .num_parts      = ARRAY_SIZE(ek_nand_partition),
 190 };
 191
 192 static struct sam9_smc_config __initdata ek_nand_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         = 3,
 199         .nrd_pulse              = 3,
 200         .ncs_write_pulse        = 3,
 201         .nwe_pulse              = 3,
 202
 203         .read_cycle             = 5,
 204         .write_cycle            = 5,
 205
 206         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 207         .tdf_cycles             = 2,
 208 };
 209
 210 static void __init ek_add_device_nand(void)
 211 {
 212         ek_nand_data.bus_width_16 = board_have_nand_16bit();
 213         /* setup bus-width (8 or 16) */
 214         if (ek_nand_data.bus_width_16)
 215                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 216         else
 217                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 218
 219         /* configure chip-select 3 (NAND) */
 220         sam9_smc_configure(0, 3, &ek_nand_smc_config);
 221
 222         at91_add_device_nand(&ek_nand_data);
 223 }
 224
 225
 226 /*
 227  * I2C devices
 228  */
 229 static struct at24_platform_data at24c512 = {
 230         .byte_len       = SZ_512K / 8,
 231         .page_size      = 128,
 232         .flags          = AT24_FLAG_ADDR16,
 233 };
 234
 235
 236 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 237         {
 238                 I2C_BOARD_INFO("24c512", 0x50),
 239                 .platform_data = &at24c512,
 240         },
 241         /* more devices can be added using expansion connectors */
 242 };
 243
 244 /*
 245  * LCD Controller
 246  */
 247 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
 248 static struct fb_videomode at91_tft_vga_modes[] = {
 249         {
 250                 .name           = "TX09D50VM1CCA @ 60",
 251                 .refresh        = 60,
 252                 .xres           = 240,          .yres           = 320,
 253                 .pixclock       = KHZ2PICOS(4965),
 254
 255                 .left_margin    = 1,            .right_margin   = 33,
 256                 .upper_margin   = 1,            .lower_margin   = 0,
 257                 .hsync_len      = 5,            .vsync_len      = 1,
 258
 259                 .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 260                 .vmode          = FB_VMODE_NONINTERLACED,
 261         },
 262 };
 263
 264 static struct fb_monspecs at91fb_default_monspecs = {
 265         .manufacturer   = "HIT",
 266         .monitor        = "TX09D70VM1CCA",
 267
 268         .modedb         = at91_tft_vga_modes,
 269         .modedb_len     = ARRAY_SIZE(at91_tft_vga_modes),
 270         .hfmin          = 15000,
 271         .hfmax          = 64000,
 272         .vfmin          = 50,
 273         .vfmax          = 150,
 274 };
 275
 276 #define AT91SAM9263_DEFAULT_LCDCON2     (ATMEL_LCDC_MEMOR_LITTLE \
 277                                         | ATMEL_LCDC_DISTYPE_TFT \
 278                                         | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
 279
 280 static void at91_lcdc_power_control(struct atmel_lcdfb_pdata *pdata, int on)
 281 {
 282         at91_set_gpio_value(AT91_PIN_PA30, on);
 283 }
 284
 285 /* Driver datas */
 286 static struct atmel_lcdfb_pdata __initdata ek_lcdc_data = {
 287         .lcdcon_is_backlight            = true,
 288         .default_bpp                    = 16,
 289         .default_dmacon                 = ATMEL_LCDC_DMAEN,
 290         .default_lcdcon2                = AT91SAM9263_DEFAULT_LCDCON2,
 291         .default_monspecs               = &at91fb_default_monspecs,
 292         .atmel_lcdfb_power_control      = at91_lcdc_power_control,
 293         .guard_time                     = 1,
 294 };
 295
 296 #else
 297 static struct atmel_lcdfb_pdata __initdata ek_lcdc_data;
 298 #endif
 299
 300
 301 /*
 302  * GPIO Buttons
 303  */
 304 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 305 static struct gpio_keys_button ek_buttons[] = {
 306         {       /* BP1, "leftclic" */
 307                 .code           = BTN_LEFT,
 308                 .gpio           = AT91_PIN_PC5,
 309                 .active_low     = 1,
 310                 .desc           = "left_click",
 311                 .wakeup         = 1,
 312         },
 313         {       /* BP2, "rightclic" */
 314                 .code           = BTN_RIGHT,
 315                 .gpio           = AT91_PIN_PC4,
 316                 .active_low     = 1,
 317                 .desc           = "right_click",
 318                 .wakeup         = 1,
 319         }
 320 };
 321
 322 static struct gpio_keys_platform_data ek_button_data = {
 323         .buttons        = ek_buttons,
 324         .nbuttons       = ARRAY_SIZE(ek_buttons),
 325 };
 326
 327 static struct platform_device ek_button_device = {
 328         .name           = "gpio-keys",
 329         .id             = -1,
 330         .num_resources  = 0,
 331         .dev            = {
 332                 .platform_data  = &ek_button_data,
 333         }
 334 };
 335
 336 static void __init ek_add_device_buttons(void)
 337 {
 338         at91_set_GPIO_periph(AT91_PIN_PC5, 1);  /* left button */
 339         at91_set_deglitch(AT91_PIN_PC5, 1);
 340         at91_set_GPIO_periph(AT91_PIN_PC4, 1);  /* right button */
 341         at91_set_deglitch(AT91_PIN_PC4, 1);
 342
 343         platform_device_register(&ek_button_device);
 344 }
 345 #else
 346 static void __init ek_add_device_buttons(void) {}
 347 #endif
 348
 349
 350 /*
 351  * AC97
 352  * reset_pin is not connected: NRST
 353  */
 354 static struct ac97c_platform_data ek_ac97_data = {
 355         .reset_pin      = -EINVAL,
 356 };
 357
 358
 359 /*
 360  * LEDs ... these could all be PWM-driven, for variable brightness
 361  */
 362 static struct gpio_led ek_leds[] = {
 363         {       /* "right" led, green, userled2 (could be driven by pwm2) */
 364                 .name                   = "ds2",
 365                 .gpio                   = AT91_PIN_PC29,
 366                 .active_low             = 1,
 367                 .default_trigger        = "nand-disk",
 368         },
 369         {       /* "power" led, yellow (could be driven by pwm0) */
 370                 .name                   = "ds3",
 371                 .gpio                   = AT91_PIN_PB7,
 372                 .default_trigger        = "heartbeat",
 373         },
 374 #if !IS_ENABLED(CONFIG_LEDS_PWM)
 375         {
 376                 .name                   = "ds1",
 377                 .gpio                   = AT91_PIN_PB8,
 378                 .active_low             = 1,
 379                 .default_trigger        = "none",
 380         }
 381 #endif
 382 };
 383
 384 /*
 385  * PWM Leds
 386  */
 387 static struct pwm_lookup pwm_lookup[] = {
 388         PWM_LOOKUP("at91sam9rl-pwm", 1, "leds_pwm", "ds1",
 389                    5000, PWM_POLARITY_INVERSED),
 390 };
 391
 392 #if IS_ENABLED(CONFIG_LEDS_PWM)
 393 static struct led_pwm pwm_leds[] = {
 394         {
 395                 .name = "ds1",
 396                 .max_brightness = 255,
 397         },
 398 };
 399
 400 static struct led_pwm_platform_data pwm_data = {
 401         .num_leds       = ARRAY_SIZE(pwm_leds),
 402         .leds           = pwm_leds,
 403 };
 404
 405 static struct platform_device leds_pwm = {
 406         .name   = "leds_pwm",
 407         .id     = -1,
 408         .dev    = {
 409                 .platform_data = &pwm_data,
 410         },
 411 };
 412 #endif
 413
 414
 415 /*
 416  * CAN
 417  */
 418 static void sam9263ek_transceiver_switch(int on)
 419 {
 420         if (on) {
 421                 at91_set_gpio_output(AT91_PIN_PA18, 1); /* CANRXEN */
 422                 at91_set_gpio_output(AT91_PIN_PA19, 0); /* CANRS */
 423         } else {
 424                 at91_set_gpio_output(AT91_PIN_PA18, 0); /* CANRXEN */
 425                 at91_set_gpio_output(AT91_PIN_PA19, 1); /* CANRS */
 426         }
 427 }
 428
 429 static struct at91_can_data ek_can_data = {
 430         .transceiver_switch = sam9263ek_transceiver_switch,
 431 };
 432
 433 static struct platform_device *devices[] __initdata = {
 434 #if IS_ENABLED(CONFIG_LEDS_PWM)
 435         &leds_pwm,
 436 #endif
 437 };
 438
 439 static void __init ek_board_init(void)
 440 {
 441         at91_register_devices();
 442
 443         /* Serial */
 444         /* DBGU on ttyS0. (Rx & Tx only) */
 445         at91_register_uart(0, 0, 0);
 446
 447         /* USART0 on ttyS1. (Rx, Tx, RTS, CTS) */
 448         at91_register_uart(AT91SAM9263_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS);
 449         at91_add_device_serial();
 450         /* USB Host */
 451         at91_add_device_usbh(&ek_usbh_data);
 452         /* USB Device */
 453         at91_add_device_udc(&ek_udc_data);
 454         /* SPI */
 455         at91_set_gpio_output(AT91_PIN_PE20, 1);         /* select spi0 clock */
 456         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 457         /* Touchscreen */
 458         ek_add_device_ts();
 459         /* MMC */
 460         at91_add_device_mci(1, &mci1_data);
 461         /* Ethernet */
 462         at91_add_device_eth(&ek_macb_data);
 463         /* NAND */
 464         ek_add_device_nand();
 465         /* I2C */
 466         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 467         /* LCD Controller */
 468         at91_add_device_lcdc(&ek_lcdc_data);
 469         /* Push Buttons */
 470         ek_add_device_buttons();
 471         /* AC97 */
 472         at91_add_device_ac97(&ek_ac97_data);
 473         /* LEDs */
 474         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 475         pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup));
 476 #if IS_ENABLED(CONFIG_LEDS_PWM)
 477         at91_add_device_pwm(1 << AT91_PWM1);
 478 #endif
 479         /* CAN */
 480         at91_add_device_can(&ek_can_data);
 481         /* Other platform devices */
 482         platform_add_devices(devices, ARRAY_SIZE(devices));
 483 }
 484
 485 MACHINE_START(AT91SAM9263EK, "Atmel AT91SAM9263-EK")
 486         /* Maintainer: Atmel */
 487         .init_time      = at91_init_time,
 488         .map_io         = at91_map_io,
 489         .handle_irq     = at91_aic_handle_irq,
 490         .init_early     = ek_init_early,
 491         .init_irq       = at91_init_irq_default,
 492         .init_machine   = ek_board_init,
 493 MACHINE_END