arch/arm/mach-at91/board-usb-a926x.c

   1 /*
   2  * linux/arch/arm/mach-at91/board-usb-a926x.c
   3  *
   4  *  Copyright (C) 2005 SAN People
   5  *  Copyright (C) 2007 Atmel Corporation.
   6  *  Copyright (C) 2007 Calao-systems
   7  *  Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #include <linux/types.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/spi/spi.h>
  30 #include <linux/gpio_keys.h>
  31 #include <linux/gpio.h>
  32 #include <linux/input.h>
  33 #include <linux/spi/mmc_spi.h>
  34
  35 #include <asm/setup.h>
  36 #include <asm/mach-types.h>
  37 #include <asm/irq.h>
  38
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/map.h>
  41 #include <asm/mach/irq.h>
  42
  43 #include <mach/hardware.h>
  44 #include <mach/board.h>
  45 #include <mach/at91sam9_smc.h>
  46 #include <mach/at91_shdwc.h>
  47
  48 #include "sam9_smc.h"
  49 #include "generic.h"
  50
  51
  52 static void __init ek_init_early(void)
  53 {
  54         /* Initialize processor: 12.00 MHz crystal */
  55         at91_initialize(12000000);
  56
  57         /* DBGU on ttyS0. (Rx & Tx only) */
  58         at91_register_uart(0, 0, 0);
  59
  60         /* set serial console to ttyS0 (ie, DBGU) */
  61         at91_set_serial_console(0);
  62 }
  63
  64 /*
  65  * USB Host port
  66  */
  67 static struct at91_usbh_data __initdata ek_usbh_data = {
  68         .ports          = 2,
  69         .vbus_pin       = {-EINVAL, -EINVAL},
  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_PB11,
  78         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
  79 };
  80
  81 static void __init ek_add_device_udc(void)
  82 {
  83         if (machine_is_usb_a9260() || machine_is_usb_a9g20())
  84                 ek_udc_data.vbus_pin = AT91_PIN_PC5;
  85
  86         at91_add_device_udc(&ek_udc_data);
  87 }
  88
  89 #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
  90 #define MMC_SPI_CARD_DETECT_INT AT91_PIN_PC4
  91 static int at91_mmc_spi_init(struct device *dev,
  92         irqreturn_t (*detect_int)(int, void *), void *data)
  93 {
  94         /* Configure Interrupt pin as input, no pull-up */
  95         at91_set_gpio_input(MMC_SPI_CARD_DETECT_INT, 0);
  96         return request_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), detect_int,
  97                 IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
  98                 "mmc-spi-detect", data);
  99 }
 100
 101 static void at91_mmc_spi_exit(struct device *dev, void *data)
 102 {
 103         free_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), data);
 104 }
 105
 106 static struct mmc_spi_platform_data at91_mmc_spi_pdata = {
 107         .init = at91_mmc_spi_init,
 108         .exit = at91_mmc_spi_exit,
 109         .detect_delay = 100, /* msecs */
 110 };
 111 #endif
 112
 113 /*
 114  * SPI devices.
 115  */
 116 static struct spi_board_info usb_a9263_spi_devices[] = {
 117 #if !defined(CONFIG_MMC_AT91)
 118         {       /* DataFlash chip */
 119                 .modalias       = "mtd_dataflash",
 120                 .chip_select    = 0,
 121                 .max_speed_hz   = 15 * 1000 * 1000,
 122                 .bus_num        = 0,
 123         }
 124 #endif
 125 };
 126
 127 static struct spi_board_info usb_a9g20_spi_devices[] = {
 128 #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
 129         {
 130                 .modalias = "mmc_spi",
 131                 .max_speed_hz = 20000000,       /* max spi clock (SCK) speed in HZ */
 132                 .bus_num = 1,
 133                 .chip_select = 0,
 134                 .platform_data = &at91_mmc_spi_pdata,
 135                 .mode = SPI_MODE_3,
 136         },
 137 #endif
 138 };
 139
 140 static void __init ek_add_device_spi(void)
 141 {
 142         if (machine_is_usb_a9263())
 143                 at91_add_device_spi(usb_a9263_spi_devices, ARRAY_SIZE(usb_a9263_spi_devices));
 144         else if (machine_is_usb_a9g20())
 145                 at91_add_device_spi(usb_a9g20_spi_devices, ARRAY_SIZE(usb_a9g20_spi_devices));
 146 }
 147
 148 /*
 149  * MACB Ethernet device
 150  */
 151 static struct macb_platform_data __initdata ek_macb_data = {
 152         .phy_irq_pin    = AT91_PIN_PE31,
 153         .is_rmii        = 1,
 154 };
 155
 156 static void __init ek_add_device_eth(void)
 157 {
 158         if (machine_is_usb_a9260() || machine_is_usb_a9g20())
 159                 ek_macb_data.phy_irq_pin = AT91_PIN_PA31;
 160
 161         at91_add_device_eth(&ek_macb_data);
 162 }
 163
 164 /*
 165  * NAND flash
 166  */
 167 static struct mtd_partition __initdata ek_nand_partition[] = {
 168         {
 169                 .name   = "barebox",
 170                 .offset = 0,
 171                 .size   = 3 * SZ_128K,
 172         }, {
 173                 .name   = "bareboxenv",
 174                 .offset = MTDPART_OFS_NXTBLK,
 175                 .size   = SZ_128K,
 176         }, {
 177                 .name   = "bareboxenv2",
 178                 .offset = MTDPART_OFS_NXTBLK,
 179                 .size   = SZ_128K,
 180         }, {
 181                 .name   = "kernel",
 182                 .offset = MTDPART_OFS_NXTBLK,
 183                 .size   = 4 * SZ_1M,
 184         }, {
 185                 .name   = "rootfs",
 186                 .offset = MTDPART_OFS_NXTBLK,
 187                 .size   = 120 * SZ_1M,
 188         }, {
 189                 .name   = "data",
 190                 .offset = MTDPART_OFS_NXTBLK,
 191                 .size   = MTDPART_SIZ_FULL,
 192         }
 193 };
 194
 195 static struct atmel_nand_data __initdata ek_nand_data = {
 196         .ale            = 21,
 197         .cle            = 22,
 198         .det_pin        = -EINVAL,
 199         .rdy_pin        = AT91_PIN_PA22,
 200         .enable_pin     = AT91_PIN_PD15,
 201         .ecc_mode       = NAND_ECC_SOFT,
 202         .parts          = ek_nand_partition,
 203         .num_parts      = ARRAY_SIZE(ek_nand_partition),
 204 };
 205
 206 static struct sam9_smc_config __initdata usb_a9260_nand_smc_config = {
 207         .ncs_read_setup         = 0,
 208         .nrd_setup              = 1,
 209         .ncs_write_setup        = 0,
 210         .nwe_setup              = 1,
 211
 212         .ncs_read_pulse         = 3,
 213         .nrd_pulse              = 3,
 214         .ncs_write_pulse        = 3,
 215         .nwe_pulse              = 3,
 216
 217         .read_cycle             = 5,
 218         .write_cycle            = 5,
 219
 220         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 221         .tdf_cycles             = 2,
 222 };
 223
 224 static struct sam9_smc_config __initdata usb_a9g20_nand_smc_config = {
 225         .ncs_read_setup         = 0,
 226         .nrd_setup              = 2,
 227         .ncs_write_setup        = 0,
 228         .nwe_setup              = 2,
 229
 230         .ncs_read_pulse         = 4,
 231         .nrd_pulse              = 4,
 232         .ncs_write_pulse        = 4,
 233         .nwe_pulse              = 4,
 234
 235         .read_cycle             = 7,
 236         .write_cycle            = 7,
 237
 238         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 239         .tdf_cycles             = 3,
 240 };
 241
 242 static void __init ek_add_device_nand(void)
 243 {
 244         if (machine_is_usb_a9260() || machine_is_usb_a9g20()) {
 245                 ek_nand_data.rdy_pin    = AT91_PIN_PC13;
 246                 ek_nand_data.enable_pin = AT91_PIN_PC14;
 247         }
 248
 249         /* configure chip-select 3 (NAND) */
 250         if (machine_is_usb_a9g20())
 251                 sam9_smc_configure(0, 3, &usb_a9g20_nand_smc_config);
 252         else
 253                 sam9_smc_configure(0, 3, &usb_a9260_nand_smc_config);
 254
 255         at91_add_device_nand(&ek_nand_data);
 256 }
 257
 258
 259 /*
 260  * GPIO Buttons
 261  */
 262 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 263 static struct gpio_keys_button ek_buttons[] = {
 264         {       /* USER PUSH BUTTON */
 265                 .code           = KEY_ENTER,
 266                 .gpio           = AT91_PIN_PB10,
 267                 .active_low     = 1,
 268                 .desc           = "user_pb",
 269                 .wakeup         = 1,
 270         }
 271 };
 272
 273 static struct gpio_keys_platform_data ek_button_data = {
 274         .buttons        = ek_buttons,
 275         .nbuttons       = ARRAY_SIZE(ek_buttons),
 276 };
 277
 278 static struct platform_device ek_button_device = {
 279         .name           = "gpio-keys",
 280         .id             = -1,
 281         .num_resources  = 0,
 282         .dev            = {
 283                 .platform_data  = &ek_button_data,
 284         }
 285 };
 286
 287 static void __init ek_add_device_buttons(void)
 288 {
 289         at91_set_GPIO_periph(AT91_PIN_PB10, 1); /* user push button, pull up enabled */
 290         at91_set_deglitch(AT91_PIN_PB10, 1);
 291
 292         platform_device_register(&ek_button_device);
 293 }
 294 #else
 295 static void __init ek_add_device_buttons(void) {}
 296 #endif
 297
 298 /*
 299  * LEDs
 300  */
 301 static struct gpio_led ek_leds[] = {
 302         {       /* user_led (green) */
 303                 .name                   = "user_led",
 304                 .gpio                   = AT91_PIN_PB21,
 305                 .active_low             = 1,
 306                 .default_trigger        = "heartbeat",
 307         }
 308 };
 309
 310 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 311         {
 312                 I2C_BOARD_INFO("rv3029c2", 0x56),
 313         },
 314 };
 315
 316 static void __init ek_add_device_leds(void)
 317 {
 318         if (machine_is_usb_a9260() || machine_is_usb_a9g20())
 319                 ek_leds[0].active_low = 0;
 320
 321         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 322 }
 323
 324 static void __init ek_board_init(void)
 325 {
 326         /* Serial */
 327         at91_add_device_serial();
 328         /* USB Host */
 329         at91_add_device_usbh(&ek_usbh_data);
 330         /* USB Device */
 331         ek_add_device_udc();
 332         /* SPI */
 333         ek_add_device_spi();
 334         /* Ethernet */
 335         ek_add_device_eth();
 336         /* NAND */
 337         ek_add_device_nand();
 338         /* Push Buttons */
 339         ek_add_device_buttons();
 340         /* LEDs */
 341         ek_add_device_leds();
 342
 343         if (machine_is_usb_a9g20()) {
 344                 /* I2C */
 345                 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 346         } else {
 347                 /* I2C */
 348                 at91_add_device_i2c(NULL, 0);
 349                 /* shutdown controller, wakeup button (5 msec low) */
 350                 at91_shdwc_write(AT91_SHDW_MR, AT91_SHDW_CPTWK0_(10)
 351                                 | AT91_SHDW_WKMODE0_LOW
 352                                 | AT91_SHDW_RTTWKEN);
 353         }
 354 }
 355
 356 MACHINE_START(USB_A9263, "CALAO USB_A9263")
 357         /* Maintainer: calao-systems */
 358         .timer          = &at91sam926x_timer,
 359         .map_io         = at91_map_io,
 360         .init_early     = ek_init_early,
 361         .init_irq       = at91_init_irq_default,
 362         .init_machine   = ek_board_init,
 363 MACHINE_END
 364
 365 MACHINE_START(USB_A9260, "CALAO USB_A9260")
 366         /* Maintainer: calao-systems */
 367         .timer          = &at91sam926x_timer,
 368         .map_io         = at91_map_io,
 369         .init_early     = ek_init_early,
 370         .init_irq       = at91_init_irq_default,
 371         .init_machine   = ek_board_init,
 372 MACHINE_END
 373
 374 MACHINE_START(USB_A9G20, "CALAO USB_A92G0")
 375         /* Maintainer: Jean-Christophe PLAGNIOL-VILLARD */
 376         .timer          = &at91sam926x_timer,
 377         .map_io         = at91_map_io,
 378         .init_early     = ek_init_early,
 379         .init_irq       = at91_init_irq_default,
 380         .init_machine   = ek_board_init,
 381 MACHINE_END