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 "at91_shdwc.h"
  54 #include "board.h"
  55 #include "sam9_smc.h"
  56 #include "generic.h"
  57 #include "gpio.h"
  58
  59
  60 static void __init ek_init_early(void)
  61 {
  62         /* Initialize processor: 16.367 MHz crystal */
  63         at91_initialize(16367660);
  64 }
  65
  66 /*
  67  * USB Host port
  68  */
  69 static struct at91_usbh_data __initdata ek_usbh_data = {
  70         .ports          = 2,
  71         .vbus_pin       = { AT91_PIN_PA24, AT91_PIN_PA21 },
  72         .vbus_pin_active_low = {1, 1},
  73         .overcurrent_pin= {-EINVAL, -EINVAL},
  74 };
  75
  76 /*
  77  * USB Device port
  78  */
  79 static struct at91_udc_data __initdata ek_udc_data = {
  80         .vbus_pin       = AT91_PIN_PA25,
  81         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
  82 };
  83
  84
  85 /*
  86  * ADS7846 Touchscreen
  87  */
  88 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  89 static int ads7843_pendown_state(void)
  90 {
  91         return !at91_get_gpio_value(AT91_PIN_PA15);     /* Touchscreen PENIRQ */
  92 }
  93
  94 static struct ads7846_platform_data ads_info = {
  95         .model                  = 7843,
  96         .x_min                  = 150,
  97         .x_max                  = 3830,
  98         .y_min                  = 190,
  99         .y_max                  = 3830,
 100         .vref_delay_usecs       = 100,
 101         .x_plate_ohms           = 450,
 102         .y_plate_ohms           = 250,
 103         .pressure_max           = 15000,
 104         .debounce_max           = 1,
 105         .debounce_rep           = 0,
 106         .debounce_tol           = (~0),
 107         .get_pendown_state      = ads7843_pendown_state,
 108 };
 109
 110 static void __init ek_add_device_ts(void)
 111 {
 112         at91_set_B_periph(AT91_PIN_PA15, 1);    /* External IRQ1, with pullup */
 113         at91_set_gpio_input(AT91_PIN_PA31, 1);  /* Touchscreen BUSY signal */
 114 }
 115 #else
 116 static void __init ek_add_device_ts(void) {}
 117 #endif
 118
 119 /*
 120  * SPI devices.
 121  */
 122 static struct spi_board_info ek_spi_devices[] = {
 123 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 124         {       /* DataFlash card */
 125                 .modalias       = "mtd_dataflash",
 126                 .chip_select    = 0,
 127                 .max_speed_hz   = 15 * 1000 * 1000,
 128                 .bus_num        = 0,
 129         },
 130 #endif
 131 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 132         {
 133                 .modalias       = "ads7846",
 134                 .chip_select    = 3,
 135                 .max_speed_hz   = 125000 * 26,  /* (max sample rate @ 3V) * (cmd + data + overhead) */
 136                 .bus_num        = 0,
 137                 .platform_data  = &ads_info,
 138                 .irq            = NR_IRQS_LEGACY + AT91SAM9263_ID_IRQ1,
 139         },
 140 #endif
 141 };
 142
 143
 144 /*
 145  * MCI (SD/MMC)
 146  */
 147 static struct mci_platform_data __initdata mci1_data = {
 148         .slot[0] = {
 149                 .bus_width      = 4,
 150                 .detect_pin     = AT91_PIN_PE18,
 151                 .wp_pin         = AT91_PIN_PE19,
 152         },
 153 };
 154
 155
 156 /*
 157  * MACB Ethernet device
 158  */
 159 static struct macb_platform_data __initdata ek_macb_data = {
 160         .phy_irq_pin    = AT91_PIN_PE31,
 161         .is_rmii        = 1,
 162 };
 163
 164
 165 /*
 166  * NAND flash
 167  */
 168 static struct mtd_partition __initdata ek_nand_partition[] = {
 169         {
 170                 .name   = "Partition 1",
 171                 .offset = 0,
 172                 .size   = SZ_64M,
 173         },
 174         {
 175                 .name   = "Partition 2",
 176                 .offset = MTDPART_OFS_NXTBLK,
 177                 .size   = MTDPART_SIZ_FULL,
 178         },
 179 };
 180
 181 static struct atmel_nand_data __initdata ek_nand_data = {
 182         .ale            = 21,
 183         .cle            = 22,
 184         .det_pin        = -EINVAL,
 185         .rdy_pin        = AT91_PIN_PA22,
 186         .enable_pin     = AT91_PIN_PD15,
 187         .ecc_mode       = NAND_ECC_SOFT,
 188         .on_flash_bbt   = 1,
 189         .parts          = ek_nand_partition,
 190         .num_parts      = ARRAY_SIZE(ek_nand_partition),
 191 };
 192
 193 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 194         .ncs_read_setup         = 0,
 195         .nrd_setup              = 1,
 196         .ncs_write_setup        = 0,
 197         .nwe_setup              = 1,
 198
 199         .ncs_read_pulse         = 3,
 200         .nrd_pulse              = 3,
 201         .ncs_write_pulse        = 3,
 202         .nwe_pulse              = 3,
 203
 204         .read_cycle             = 5,
 205         .write_cycle            = 5,
 206
 207         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 208         .tdf_cycles             = 2,
 209 };
 210
 211 static void __init ek_add_device_nand(void)
 212 {
 213         ek_nand_data.bus_width_16 = board_have_nand_16bit();
 214         /* setup bus-width (8 or 16) */
 215         if (ek_nand_data.bus_width_16)
 216                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 217         else
 218                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 219
 220         /* configure chip-select 3 (NAND) */
 221         sam9_smc_configure(0, 3, &ek_nand_smc_config);
 222
 223         at91_add_device_nand(&ek_nand_data);
 224 }
 225
 226
 227 /*
 228  * I2C devices
 229  */
 230 static struct at24_platform_data at24c512 = {
 231         .byte_len       = SZ_512K / 8,
 232         .page_size      = 128,
 233         .flags          = AT24_FLAG_ADDR16,
 234 };
 235
 236
 237 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 238         {
 239                 I2C_BOARD_INFO("24c512", 0x50),
 240                 .platform_data = &at24c512,
 241         },
 242         /* more devices can be added using expansion connectors */
 243 };
 244
 245 /*
 246  * LCD Controller
 247  */
 248 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
 249 static struct fb_videomode at91_tft_vga_modes[] = {
 250         {
 251                 .name           = "TX09D50VM1CCA @ 60",
 252                 .refresh        = 60,
 253                 .xres           = 240,          .yres           = 320,
 254                 .pixclock       = KHZ2PICOS(4965),
 255
 256                 .left_margin    = 1,            .right_margin   = 33,
 257                 .upper_margin   = 1,            .lower_margin   = 0,
 258                 .hsync_len      = 5,            .vsync_len      = 1,
 259
 260                 .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 261                 .vmode          = FB_VMODE_NONINTERLACED,
 262         },
 263 };
 264
 265 static struct fb_monspecs at91fb_default_monspecs = {
 266         .manufacturer   = "HIT",
 267         .monitor        = "TX09D70VM1CCA",
 268
 269         .modedb         = at91_tft_vga_modes,
 270         .modedb_len     = ARRAY_SIZE(at91_tft_vga_modes),
 271         .hfmin          = 15000,
 272         .hfmax          = 64000,
 273         .vfmin          = 50,
 274         .vfmax          = 150,
 275 };
 276
 277 #define AT91SAM9263_DEFAULT_LCDCON2     (ATMEL_LCDC_MEMOR_LITTLE \
 278                                         | ATMEL_LCDC_DISTYPE_TFT \
 279                                         | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
 280
 281 static void at91_lcdc_power_control(struct atmel_lcdfb_pdata *pdata, int on)
 282 {
 283         at91_set_gpio_value(AT91_PIN_PA30, on);
 284 }
 285
 286 /* Driver datas */
 287 static struct atmel_lcdfb_pdata __initdata ek_lcdc_data = {
 288         .lcdcon_is_backlight            = true,
 289         .default_bpp                    = 16,
 290         .default_dmacon                 = ATMEL_LCDC_DMAEN,
 291         .default_lcdcon2                = AT91SAM9263_DEFAULT_LCDCON2,
 292         .default_monspecs               = &at91fb_default_monspecs,
 293         .atmel_lcdfb_power_control      = at91_lcdc_power_control,
 294         .guard_time                     = 1,
 295 };
 296
 297 #else
 298 static struct atmel_lcdfb_pdata __initdata ek_lcdc_data;
 299 #endif
 300
 301
 302 /*
 303  * GPIO Buttons
 304  */
 305 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 306 static struct gpio_keys_button ek_buttons[] = {
 307         {       /* BP1, "leftclic" */
 308                 .code           = BTN_LEFT,
 309                 .gpio           = AT91_PIN_PC5,
 310                 .active_low     = 1,
 311                 .desc           = "left_click",
 312                 .wakeup         = 1,
 313         },
 314         {       /* BP2, "rightclic" */
 315                 .code           = BTN_RIGHT,
 316                 .gpio           = AT91_PIN_PC4,
 317                 .active_low     = 1,
 318                 .desc           = "right_click",
 319                 .wakeup         = 1,
 320         }
 321 };
 322
 323 static struct gpio_keys_platform_data ek_button_data = {
 324         .buttons        = ek_buttons,
 325         .nbuttons       = ARRAY_SIZE(ek_buttons),
 326 };
 327
 328 static struct platform_device ek_button_device = {
 329         .name           = "gpio-keys",
 330         .id             = -1,
 331         .num_resources  = 0,
 332         .dev            = {
 333                 .platform_data  = &ek_button_data,
 334         }
 335 };
 336
 337 static void __init ek_add_device_buttons(void)
 338 {
 339         at91_set_GPIO_periph(AT91_PIN_PC5, 1);  /* left button */
 340         at91_set_deglitch(AT91_PIN_PC5, 1);
 341         at91_set_GPIO_periph(AT91_PIN_PC4, 1);  /* right button */
 342         at91_set_deglitch(AT91_PIN_PC4, 1);
 343
 344         platform_device_register(&ek_button_device);
 345 }
 346 #else
 347 static void __init ek_add_device_buttons(void) {}
 348 #endif
 349
 350
 351 /*
 352  * AC97
 353  * reset_pin is not connected: NRST
 354  */
 355 static struct ac97c_platform_data ek_ac97_data = {
 356         .reset_pin      = -EINVAL,
 357 };
 358
 359
 360 /*
 361  * LEDs ... these could all be PWM-driven, for variable brightness
 362  */
 363 static struct gpio_led ek_leds[] = {
 364         {       /* "right" led, green, userled2 (could be driven by pwm2) */
 365                 .name                   = "ds2",
 366                 .gpio                   = AT91_PIN_PC29,
 367                 .active_low             = 1,
 368                 .default_trigger        = "nand-disk",
 369         },
 370         {       /* "power" led, yellow (could be driven by pwm0) */
 371                 .name                   = "ds3",
 372                 .gpio                   = AT91_PIN_PB7,
 373                 .default_trigger        = "heartbeat",
 374         },
 375 #if !IS_ENABLED(CONFIG_LEDS_PWM)
 376         {
 377                 .name                   = "ds1",
 378                 .gpio                   = AT91_PIN_PB8,
 379                 .active_low             = 1,
 380                 .default_trigger        = "none",
 381         }
 382 #endif
 383 };
 384
 385 /*
 386  * PWM Leds
 387  */
 388 static struct pwm_lookup pwm_lookup[] = {
 389         PWM_LOOKUP("at91sam9rl-pwm", 1, "leds_pwm", "ds1",
 390                    5000, PWM_POLARITY_INVERSED),
 391 };
 392
 393 #if IS_ENABLED(CONFIG_LEDS_PWM)
 394 static struct led_pwm pwm_leds[] = {
 395         {
 396                 .name = "ds1",
 397                 .max_brightness = 255,
 398         },
 399 };
 400
 401 static struct led_pwm_platform_data pwm_data = {
 402         .num_leds       = ARRAY_SIZE(pwm_leds),
 403         .leds           = pwm_leds,
 404 };
 405
 406 static struct platform_device leds_pwm = {
 407         .name   = "leds_pwm",
 408         .id     = -1,
 409         .dev    = {
 410                 .platform_data = &pwm_data,
 411         },
 412 };
 413 #endif
 414
 415
 416 /*
 417  * CAN
 418  */
 419 static void sam9263ek_transceiver_switch(int on)
 420 {
 421         if (on) {
 422                 at91_set_gpio_output(AT91_PIN_PA18, 1); /* CANRXEN */
 423                 at91_set_gpio_output(AT91_PIN_PA19, 0); /* CANRS */
 424         } else {
 425                 at91_set_gpio_output(AT91_PIN_PA18, 0); /* CANRXEN */
 426                 at91_set_gpio_output(AT91_PIN_PA19, 1); /* CANRS */
 427         }
 428 }
 429
 430 static struct at91_can_data ek_can_data = {
 431         .transceiver_switch = sam9263ek_transceiver_switch,
 432 };
 433
 434 static struct platform_device *devices[] __initdata = {
 435 #if IS_ENABLED(CONFIG_LEDS_PWM)
 436         &leds_pwm,
 437 #endif
 438 };
 439
 440 static void __init ek_board_init(void)
 441 {
 442         /* Serial */
 443         /* DBGU on ttyS0. (Rx & Tx only) */
 444         at91_register_uart(0, 0, 0);
 445
 446         /* USART0 on ttyS1. (Rx, Tx, RTS, CTS) */
 447         at91_register_uart(AT91SAM9263_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS);
 448         at91_add_device_serial();
 449         /* USB Host */
 450         at91_add_device_usbh(&ek_usbh_data);
 451         /* USB Device */
 452         at91_add_device_udc(&ek_udc_data);
 453         /* SPI */
 454         at91_set_gpio_output(AT91_PIN_PE20, 1);         /* select spi0 clock */
 455         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 456         /* Touchscreen */
 457         ek_add_device_ts();
 458         /* MMC */
 459         at91_add_device_mci(1, &mci1_data);
 460         /* Ethernet */
 461         at91_add_device_eth(&ek_macb_data);
 462         /* NAND */
 463         ek_add_device_nand();
 464         /* I2C */
 465         at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 466         /* LCD Controller */
 467         at91_add_device_lcdc(&ek_lcdc_data);
 468         /* Push Buttons */
 469         ek_add_device_buttons();
 470         /* AC97 */
 471         at91_add_device_ac97(&ek_ac97_data);
 472         /* LEDs */
 473         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 474         pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup));
 475 #if IS_ENABLED(CONFIG_LEDS_PWM)
 476         at91_add_device_pwm(1 << AT91_PWM1);
 477 #endif
 478         /* CAN */
 479         at91_add_device_can(&ek_can_data);
 480         /* Other platform devices */
 481         platform_add_devices(devices, ARRAY_SIZE(devices));
 482 }
 483
 484 MACHINE_START(AT91SAM9263EK, "Atmel AT91SAM9263-EK")
 485         /* Maintainer: Atmel */
 486         .init_time      = at91sam926x_pit_init,
 487         .map_io         = at91_map_io,
 488         .handle_irq     = at91_aic_handle_irq,
 489         .init_early     = ek_init_early,
 490         .init_irq       = at91_init_irq_default,
 491         .init_machine   = ek_board_init,
 492 MACHINE_END