arch/arm/mach-imx/mach-mx31moboard.c

   1 /*
   2  *  Copyright (C) 2008 Valentin Longchamp, EPFL Mobots group
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <linux/delay.h>
  16 #include <linux/dma-mapping.h>
  17 #include <linux/gfp.h>
  18 #include <linux/gpio.h>
  19 #include <linux/init.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/moduleparam.h>
  22 #include <linux/leds.h>
  23 #include <linux/memory.h>
  24 #include <linux/mtd/physmap.h>
  25 #include <linux/mtd/partitions.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/regulator/machine.h>
  28 #include <linux/mfd/mc13783.h>
  29 #include <linux/spi/spi.h>
  30 #include <linux/types.h>
  31 #include <linux/memblock.h>
  32 #include <linux/clk.h>
  33 #include <linux/io.h>
  34 #include <linux/err.h>
  35 #include <linux/input.h>
  36
  37 #include <linux/usb/otg.h>
  38 #include <linux/usb/ulpi.h>
  39
  40 #include <asm/mach-types.h>
  41 #include <asm/mach/arch.h>
  42 #include <asm/mach/time.h>
  43 #include <asm/mach/map.h>
  44 #include <asm/memblock.h>
  45 #include <linux/platform_data/asoc-imx-ssi.h>
  46
  47 #include "board-mx31moboard.h"
  48 #include "common.h"
  49 #include "devices-imx31.h"
  50 #include "ehci.h"
  51 #include "hardware.h"
  52 #include "iomux-mx3.h"
  53 #include "ulpi.h"
  54
  55 static unsigned int moboard_pins[] = {
  56         /* UART0 */
  57         MX31_PIN_TXD1__TXD1, MX31_PIN_RXD1__RXD1,
  58         MX31_PIN_CTS1__GPIO2_7,
  59         /* UART4 */
  60         MX31_PIN_PC_RST__CTS5, MX31_PIN_PC_VS2__RTS5,
  61         MX31_PIN_PC_BVD2__TXD5, MX31_PIN_PC_BVD1__RXD5,
  62         /* I2C0 */
  63         MX31_PIN_I2C_DAT__I2C1_SDA, MX31_PIN_I2C_CLK__I2C1_SCL,
  64         /* I2C1 */
  65         MX31_PIN_DCD_DTE1__I2C2_SDA, MX31_PIN_RI_DTE1__I2C2_SCL,
  66         /* SDHC1 */
  67         MX31_PIN_SD1_DATA3__SD1_DATA3, MX31_PIN_SD1_DATA2__SD1_DATA2,
  68         MX31_PIN_SD1_DATA1__SD1_DATA1, MX31_PIN_SD1_DATA0__SD1_DATA0,
  69         MX31_PIN_SD1_CLK__SD1_CLK, MX31_PIN_SD1_CMD__SD1_CMD,
  70         MX31_PIN_ATA_CS0__GPIO3_26, MX31_PIN_ATA_CS1__GPIO3_27,
  71         /* USB reset */
  72         MX31_PIN_GPIO1_0__GPIO1_0,
  73         /* USB OTG */
  74         MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
  75         MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
  76         MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
  77         MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
  78         MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
  79         MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
  80         MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
  81         MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
  82         MX31_PIN_USBOTG_CLK__USBOTG_CLK, MX31_PIN_USBOTG_DIR__USBOTG_DIR,
  83         MX31_PIN_USBOTG_NXT__USBOTG_NXT, MX31_PIN_USBOTG_STP__USBOTG_STP,
  84         MX31_PIN_USB_OC__GPIO1_30,
  85         /* USB H2 */
  86         MX31_PIN_USBH2_DATA0__USBH2_DATA0,
  87         MX31_PIN_USBH2_DATA1__USBH2_DATA1,
  88         MX31_PIN_STXD3__USBH2_DATA2, MX31_PIN_SRXD3__USBH2_DATA3,
  89         MX31_PIN_SCK3__USBH2_DATA4, MX31_PIN_SFS3__USBH2_DATA5,
  90         MX31_PIN_STXD6__USBH2_DATA6, MX31_PIN_SRXD6__USBH2_DATA7,
  91         MX31_PIN_USBH2_CLK__USBH2_CLK, MX31_PIN_USBH2_DIR__USBH2_DIR,
  92         MX31_PIN_USBH2_NXT__USBH2_NXT, MX31_PIN_USBH2_STP__USBH2_STP,
  93         MX31_PIN_SCK6__GPIO1_25,
  94         /* LEDs */
  95         MX31_PIN_SVEN0__GPIO2_0, MX31_PIN_STX0__GPIO2_1,
  96         MX31_PIN_SRX0__GPIO2_2, MX31_PIN_SIMPD0__GPIO2_3,
  97         /* SPI1 */
  98         MX31_PIN_CSPI2_MOSI__MOSI, MX31_PIN_CSPI2_MISO__MISO,
  99         MX31_PIN_CSPI2_SCLK__SCLK, MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
 100         MX31_PIN_CSPI2_SS0__SS0, MX31_PIN_CSPI2_SS2__SS2,
 101         /* Atlas IRQ */
 102         MX31_PIN_GPIO1_3__GPIO1_3,
 103         /* SPI2 */
 104         MX31_PIN_CSPI3_MOSI__MOSI, MX31_PIN_CSPI3_MISO__MISO,
 105         MX31_PIN_CSPI3_SCLK__SCLK, MX31_PIN_CSPI3_SPI_RDY__SPI_RDY,
 106         MX31_PIN_CSPI2_SS1__CSPI3_SS1,
 107         /* SSI */
 108         MX31_PIN_STXD4__STXD4, MX31_PIN_SRXD4__SRXD4,
 109         MX31_PIN_SCK4__SCK4, MX31_PIN_SFS4__SFS4,
 110 };
 111
 112 static struct physmap_flash_data mx31moboard_flash_data = {
 113         .width  = 2,
 114 };
 115
 116 static struct resource mx31moboard_flash_resource = {
 117         .start  = 0xa0000000,
 118         .end    = 0xa1ffffff,
 119         .flags  = IORESOURCE_MEM,
 120 };
 121
 122 static struct platform_device mx31moboard_flash = {
 123         .name   = "physmap-flash",
 124         .id     = 0,
 125         .dev    = {
 126                 .platform_data  = &mx31moboard_flash_data,
 127         },
 128         .resource = &mx31moboard_flash_resource,
 129         .num_resources = 1,
 130 };
 131
 132 static void __init moboard_uart0_init(void)
 133 {
 134         if (!gpio_request(IOMUX_TO_GPIO(MX31_PIN_CTS1), "uart0-cts-hack")) {
 135                 gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_CTS1), 0);
 136                 gpio_free(IOMUX_TO_GPIO(MX31_PIN_CTS1));
 137         }
 138 }
 139
 140 static const struct imxuart_platform_data uart0_pdata __initconst = {
 141 };
 142
 143 static const struct imxuart_platform_data uart4_pdata __initconst = {
 144         .flags = IMXUART_HAVE_RTSCTS,
 145 };
 146
 147 static const struct imxi2c_platform_data moboard_i2c0_data __initconst = {
 148         .bitrate = 400000,
 149 };
 150
 151 static const struct imxi2c_platform_data moboard_i2c1_data __initconst = {
 152         .bitrate = 100000,
 153 };
 154
 155 static int moboard_spi1_cs[] = {
 156         MXC_SPI_CS(0),
 157         MXC_SPI_CS(2),
 158 };
 159
 160 static const struct spi_imx_master moboard_spi1_pdata __initconst = {
 161         .chipselect     = moboard_spi1_cs,
 162         .num_chipselect = ARRAY_SIZE(moboard_spi1_cs),
 163 };
 164
 165 static struct regulator_consumer_supply sdhc_consumers[] = {
 166         {
 167                 .dev_name = "imx31-mmc.0",
 168                 .supply = "sdhc0_vcc",
 169         },
 170         {
 171                 .dev_name = "imx31-mmc.1",
 172                 .supply = "sdhc1_vcc",
 173         },
 174 };
 175
 176 static struct regulator_init_data sdhc_vreg_data = {
 177         .constraints = {
 178                 .min_uV = 2700000,
 179                 .max_uV = 3000000,
 180                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 181                         REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
 182                 .valid_modes_mask = REGULATOR_MODE_NORMAL |
 183                         REGULATOR_MODE_FAST,
 184                 .always_on = 0,
 185                 .boot_on = 1,
 186         },
 187         .num_consumer_supplies = ARRAY_SIZE(sdhc_consumers),
 188         .consumer_supplies = sdhc_consumers,
 189 };
 190
 191 static struct regulator_consumer_supply cam_consumers[] = {
 192         {
 193                 .dev_name = "mx3_camera.0",
 194                 .supply = "cam_vcc",
 195         },
 196 };
 197
 198 static struct regulator_init_data cam_vreg_data = {
 199         .constraints = {
 200                 .min_uV = 2700000,
 201                 .max_uV = 3000000,
 202                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 203                         REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
 204                 .valid_modes_mask = REGULATOR_MODE_NORMAL |
 205                         REGULATOR_MODE_FAST,
 206                 .always_on = 0,
 207                 .boot_on = 1,
 208         },
 209         .num_consumer_supplies = ARRAY_SIZE(cam_consumers),
 210         .consumer_supplies = cam_consumers,
 211 };
 212
 213 static struct mc13xxx_regulator_init_data moboard_regulators[] = {
 214         {
 215                 .id = MC13783_REG_VMMC1,
 216                 .init_data = &sdhc_vreg_data,
 217         },
 218         {
 219                 .id = MC13783_REG_VCAM,
 220                 .init_data = &cam_vreg_data,
 221         },
 222 };
 223
 224 static struct mc13xxx_led_platform_data moboard_led[] = {
 225         {
 226                 .id = MC13783_LED_R1,
 227                 .name = "coreboard-led-4:red",
 228         },
 229         {
 230                 .id = MC13783_LED_G1,
 231                 .name = "coreboard-led-4:green",
 232         },
 233         {
 234                 .id = MC13783_LED_B1,
 235                 .name = "coreboard-led-4:blue",
 236         },
 237         {
 238                 .id = MC13783_LED_R2,
 239                 .name = "coreboard-led-5:red",
 240         },
 241         {
 242                 .id = MC13783_LED_G2,
 243                 .name = "coreboard-led-5:green",
 244         },
 245         {
 246                 .id = MC13783_LED_B2,
 247                 .name = "coreboard-led-5:blue",
 248         },
 249 };
 250
 251 static struct mc13xxx_leds_platform_data moboard_leds = {
 252         .num_leds = ARRAY_SIZE(moboard_led),
 253         .led = moboard_led,
 254         .led_control[0] = MC13783_LED_C0_ENABLE | MC13783_LED_C0_ABMODE(0),
 255         .led_control[1] = MC13783_LED_C1_SLEWLIM,
 256         .led_control[2] = MC13783_LED_C2_SLEWLIM,
 257         .led_control[3] = MC13783_LED_C3_PERIOD(0) |
 258                           MC13783_LED_C3_CURRENT_R1(2) |
 259                           MC13783_LED_C3_CURRENT_G1(2) |
 260                           MC13783_LED_C3_CURRENT_B1(2),
 261         .led_control[4] = MC13783_LED_C4_PERIOD(0) |
 262                           MC13783_LED_C4_CURRENT_R2(3) |
 263                           MC13783_LED_C4_CURRENT_G2(3) |
 264                           MC13783_LED_C4_CURRENT_B2(3),
 265 };
 266
 267 static struct mc13xxx_buttons_platform_data moboard_buttons = {
 268         .b1on_flags = MC13783_BUTTON_DBNC_750MS | MC13783_BUTTON_ENABLE |
 269                         MC13783_BUTTON_POL_INVERT,
 270         .b1on_key = KEY_POWER,
 271 };
 272
 273 static struct mc13xxx_codec_platform_data moboard_codec = {
 274         .dac_ssi_port = MC13783_SSI1_PORT,
 275         .adc_ssi_port = MC13783_SSI1_PORT,
 276 };
 277
 278 static struct mc13xxx_platform_data moboard_pmic = {
 279         .regulators = {
 280                 .regulators = moboard_regulators,
 281                 .num_regulators = ARRAY_SIZE(moboard_regulators),
 282         },
 283         .leds = &moboard_leds,
 284         .buttons = &moboard_buttons,
 285         .codec = &moboard_codec,
 286         .flags = MC13XXX_USE_RTC | MC13XXX_USE_ADC | MC13XXX_USE_CODEC,
 287 };
 288
 289 static struct imx_ssi_platform_data moboard_ssi_pdata = {
 290         .flags = IMX_SSI_DMA | IMX_SSI_NET,
 291 };
 292
 293 static struct spi_board_info moboard_spi_board_info[] __initdata = {
 294         {
 295                 .modalias = "mc13783",
 296                 /* irq number is run-time assigned */
 297                 .max_speed_hz = 300000,
 298                 .bus_num = 1,
 299                 .chip_select = 0,
 300                 .platform_data = &moboard_pmic,
 301                 .mode = SPI_CS_HIGH,
 302         },
 303 };
 304
 305 static int moboard_spi2_cs[] = {
 306         MXC_SPI_CS(1),
 307 };
 308
 309 static const struct spi_imx_master moboard_spi2_pdata __initconst = {
 310         .chipselect     = moboard_spi2_cs,
 311         .num_chipselect = ARRAY_SIZE(moboard_spi2_cs),
 312 };
 313
 314 #define SDHC1_CD IOMUX_TO_GPIO(MX31_PIN_ATA_CS0)
 315 #define SDHC1_WP IOMUX_TO_GPIO(MX31_PIN_ATA_CS1)
 316
 317 static int moboard_sdhc1_get_ro(struct device *dev)
 318 {
 319         return !gpio_get_value(SDHC1_WP);
 320 }
 321
 322 static int moboard_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
 323                 void *data)
 324 {
 325         int ret;
 326
 327         ret = gpio_request(SDHC1_CD, "sdhc-detect");
 328         if (ret)
 329                 return ret;
 330
 331         gpio_direction_input(SDHC1_CD);
 332
 333         ret = gpio_request(SDHC1_WP, "sdhc-wp");
 334         if (ret)
 335                 goto err_gpio_free;
 336         gpio_direction_input(SDHC1_WP);
 337
 338         ret = request_irq(gpio_to_irq(SDHC1_CD), detect_irq,
 339                 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 340                 "sdhc1-card-detect", data);
 341         if (ret)
 342                 goto err_gpio_free_2;
 343
 344         return 0;
 345
 346 err_gpio_free_2:
 347         gpio_free(SDHC1_WP);
 348 err_gpio_free:
 349         gpio_free(SDHC1_CD);
 350
 351         return ret;
 352 }
 353
 354 static void moboard_sdhc1_exit(struct device *dev, void *data)
 355 {
 356         free_irq(gpio_to_irq(SDHC1_CD), data);
 357         gpio_free(SDHC1_WP);
 358         gpio_free(SDHC1_CD);
 359 }
 360
 361 static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
 362         .get_ro = moboard_sdhc1_get_ro,
 363         .init   = moboard_sdhc1_init,
 364         .exit   = moboard_sdhc1_exit,
 365 };
 366
 367 /*
 368  * this pin is dedicated for all mx31moboard systems, so we do it here
 369  */
 370 #define USB_RESET_B     IOMUX_TO_GPIO(MX31_PIN_GPIO1_0)
 371 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 372                       PAD_CTL_ODE_CMOS)
 373
 374 #define OTG_EN_B IOMUX_TO_GPIO(MX31_PIN_USB_OC)
 375 #define USBH2_EN_B IOMUX_TO_GPIO(MX31_PIN_SCK6)
 376
 377 static void usb_xcvr_reset(void)
 378 {
 379         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG | PAD_CTL_100K_PD);
 380         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG | PAD_CTL_100K_PD);
 381         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG | PAD_CTL_100K_PD);
 382         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG | PAD_CTL_100K_PD);
 383         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG | PAD_CTL_100K_PD);
 384         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG | PAD_CTL_100K_PD);
 385         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG | PAD_CTL_100K_PD);
 386         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG | PAD_CTL_100K_PD);
 387         mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG | PAD_CTL_100K_PU);
 388         mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG | PAD_CTL_100K_PU);
 389         mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG | PAD_CTL_100K_PU);
 390         mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG | PAD_CTL_100K_PU);
 391
 392         mxc_iomux_set_gpr(MUX_PGP_UH2, true);
 393         mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG | PAD_CTL_100K_PU);
 394         mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG | PAD_CTL_100K_PU);
 395         mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG | PAD_CTL_100K_PU);
 396         mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG | PAD_CTL_100K_PU);
 397         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG | PAD_CTL_100K_PD);
 398         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG | PAD_CTL_100K_PD);
 399         mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG | PAD_CTL_100K_PD);
 400         mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG | PAD_CTL_100K_PD);
 401         mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG | PAD_CTL_100K_PD);
 402         mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG | PAD_CTL_100K_PD);
 403         mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG | PAD_CTL_100K_PD);
 404         mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG | PAD_CTL_100K_PD);
 405
 406         gpio_request(OTG_EN_B, "usb-udc-en");
 407         gpio_direction_output(OTG_EN_B, 0);
 408         gpio_request(USBH2_EN_B, "usbh2-en");
 409         gpio_direction_output(USBH2_EN_B, 0);
 410
 411         gpio_request(USB_RESET_B, "usb-reset");
 412         gpio_direction_output(USB_RESET_B, 0);
 413         mdelay(1);
 414         gpio_set_value(USB_RESET_B, 1);
 415         mdelay(1);
 416 }
 417
 418 static int moboard_usbh2_init_hw(struct platform_device *pdev)
 419 {
 420         return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
 421 }
 422
 423 static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
 424         .init   = moboard_usbh2_init_hw,
 425         .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
 426 };
 427
 428 static int __init moboard_usbh2_init(void)
 429 {
 430         struct platform_device *pdev;
 431
 432         usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
 433                         ULPI_OTG_DRVVBUS_EXT);
 434         if (!usbh2_pdata.otg)
 435                 return -ENODEV;
 436
 437         pdev = imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
 438
 439         return PTR_ERR_OR_ZERO(pdev);
 440 }
 441
 442 static const struct gpio_led mx31moboard_leds[] __initconst = {
 443         {
 444                 .name   = "coreboard-led-0:red:running",
 445                 .default_trigger = "heartbeat",
 446                 .gpio   = IOMUX_TO_GPIO(MX31_PIN_SVEN0),
 447         }, {
 448                 .name   = "coreboard-led-1:red",
 449                 .gpio   = IOMUX_TO_GPIO(MX31_PIN_STX0),
 450         }, {
 451                 .name   = "coreboard-led-2:red",
 452                 .gpio   = IOMUX_TO_GPIO(MX31_PIN_SRX0),
 453         }, {
 454                 .name   = "coreboard-led-3:red",
 455                 .gpio   = IOMUX_TO_GPIO(MX31_PIN_SIMPD0),
 456         },
 457 };
 458
 459 static const struct gpio_led_platform_data mx31moboard_led_pdata __initconst = {
 460         .num_leds       = ARRAY_SIZE(mx31moboard_leds),
 461         .leds           = mx31moboard_leds,
 462 };
 463
 464 static struct platform_device *devices[] __initdata = {
 465         &mx31moboard_flash,
 466 };
 467
 468 static struct mx3_camera_pdata camera_pdata __initdata = {
 469         .flags          = MX3_CAMERA_DATAWIDTH_8 | MX3_CAMERA_DATAWIDTH_10,
 470         .mclk_10khz     = 4800,
 471 };
 472
 473 static phys_addr_t mx3_camera_base __initdata;
 474 #define MX3_CAMERA_BUF_SIZE SZ_4M
 475
 476 static int __init mx31moboard_init_cam(void)
 477 {
 478         int dma, ret = -ENOMEM;
 479         struct platform_device *pdev;
 480
 481         imx31_add_ipu_core();
 482
 483         pdev = imx31_alloc_mx3_camera(&camera_pdata);
 484         if (IS_ERR(pdev))
 485                 return PTR_ERR(pdev);
 486
 487         dma = dma_declare_coherent_memory(&pdev->dev,
 488                                         mx3_camera_base, mx3_camera_base,
 489                                         MX3_CAMERA_BUF_SIZE,
 490                                         DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE);
 491         if (!(dma & DMA_MEMORY_MAP))
 492                 goto err;
 493
 494         ret = platform_device_add(pdev);
 495         if (ret)
 496 err:
 497                 platform_device_put(pdev);
 498
 499         return ret;
 500
 501 }
 502
 503 static void mx31moboard_poweroff(void)
 504 {
 505         struct clk *clk = clk_get_sys("imx2-wdt.0", NULL);
 506
 507         if (!IS_ERR(clk))
 508                 clk_prepare_enable(clk);
 509
 510         mxc_iomux_mode(MX31_PIN_WATCHDOG_RST__WATCHDOG_RST);
 511
 512         imx_writew(1 << 6 | 1 << 2, MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
 513 }
 514
 515 static int mx31moboard_baseboard;
 516 core_param(mx31moboard_baseboard, mx31moboard_baseboard, int, 0444);
 517
 518 /*
 519  * Board specific initialization.
 520  */
 521 static void __init mx31moboard_init(void)
 522 {
 523         imx31_soc_init();
 524
 525         mxc_iomux_setup_multiple_pins(moboard_pins, ARRAY_SIZE(moboard_pins),
 526                 "moboard");
 527
 528         platform_add_devices(devices, ARRAY_SIZE(devices));
 529         gpio_led_register_device(-1, &mx31moboard_led_pdata);
 530
 531         imx31_add_imx2_wdt();
 532
 533         moboard_uart0_init();
 534         imx31_add_imx_uart0(&uart0_pdata);
 535         imx31_add_imx_uart4(&uart4_pdata);
 536
 537         imx31_add_imx_i2c0(&moboard_i2c0_data);
 538         imx31_add_imx_i2c1(&moboard_i2c1_data);
 539
 540         imx31_add_spi_imx1(&moboard_spi1_pdata);
 541         imx31_add_spi_imx2(&moboard_spi2_pdata);
 542
 543         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3), "pmic-irq");
 544         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
 545         moboard_spi_board_info[0].irq =
 546                         gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
 547         spi_register_board_info(moboard_spi_board_info,
 548                 ARRAY_SIZE(moboard_spi_board_info));
 549
 550         imx31_add_mxc_mmc(0, &sdhc1_pdata);
 551
 552         mx31moboard_init_cam();
 553
 554         usb_xcvr_reset();
 555
 556         moboard_usbh2_init();
 557
 558         imx31_add_imx_ssi(0, &moboard_ssi_pdata);
 559
 560         imx_add_platform_device("imx_mc13783", 0, NULL, 0, NULL, 0);
 561
 562         pm_power_off = mx31moboard_poweroff;
 563
 564         switch (mx31moboard_baseboard) {
 565         case MX31NOBOARD:
 566                 break;
 567         case MX31DEVBOARD:
 568                 mx31moboard_devboard_init();
 569                 break;
 570         case MX31MARXBOT:
 571                 mx31moboard_marxbot_init();
 572                 break;
 573         case MX31SMARTBOT:
 574         case MX31EYEBOT:
 575                 mx31moboard_smartbot_init(mx31moboard_baseboard);
 576                 break;
 577         default:
 578                 printk(KERN_ERR "Illegal mx31moboard_baseboard type %d\n",
 579                         mx31moboard_baseboard);
 580         }
 581 }
 582
 583 static void __init mx31moboard_timer_init(void)
 584 {
 585         mx31_clocks_init(26000000);
 586 }
 587
 588 static void __init mx31moboard_reserve(void)
 589 {
 590         /* reserve 4 MiB for mx3-camera */
 591         mx3_camera_base = arm_memblock_steal(MX3_CAMERA_BUF_SIZE,
 592                         MX3_CAMERA_BUF_SIZE);
 593 }
 594
 595 MACHINE_START(MX31MOBOARD, "EPFL Mobots mx31moboard")
 596         /* Maintainer: Philippe Retornaz, EPFL Mobots group */
 597         .atag_offset = 0x100,
 598         .reserve = mx31moboard_reserve,
 599         .map_io = mx31_map_io,
 600         .init_early = imx31_init_early,
 601         .init_irq = mx31_init_irq,
 602         .init_time      = mx31moboard_timer_init,
 603         .init_machine = mx31moboard_init,
 604         .restart        = mxc_restart,
 605 MACHINE_END