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 "hardware.h"
  51 #include "iomux-mx3.h"
  52 #include "ulpi.h"
  53
  54 static unsigned int moboard_pins[] = {
  55         /* UART0 */
  56         MX31_PIN_TXD1__TXD1, MX31_PIN_RXD1__RXD1,
  57         MX31_PIN_CTS1__GPIO2_7,
  58         /* UART4 */
  59         MX31_PIN_PC_RST__CTS5, MX31_PIN_PC_VS2__RTS5,
  60         MX31_PIN_PC_BVD2__TXD5, MX31_PIN_PC_BVD1__RXD5,
  61         /* I2C0 */
  62         MX31_PIN_I2C_DAT__I2C1_SDA, MX31_PIN_I2C_CLK__I2C1_SCL,
  63         /* I2C1 */
  64         MX31_PIN_DCD_DTE1__I2C2_SDA, MX31_PIN_RI_DTE1__I2C2_SCL,
  65         /* SDHC1 */
  66         MX31_PIN_SD1_DATA3__SD1_DATA3, MX31_PIN_SD1_DATA2__SD1_DATA2,
  67         MX31_PIN_SD1_DATA1__SD1_DATA1, MX31_PIN_SD1_DATA0__SD1_DATA0,
  68         MX31_PIN_SD1_CLK__SD1_CLK, MX31_PIN_SD1_CMD__SD1_CMD,
  69         MX31_PIN_ATA_CS0__GPIO3_26, MX31_PIN_ATA_CS1__GPIO3_27,
  70         /* USB reset */
  71         MX31_PIN_GPIO1_0__GPIO1_0,
  72         /* USB OTG */
  73         MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
  74         MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
  75         MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
  76         MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
  77         MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
  78         MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
  79         MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
  80         MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
  81         MX31_PIN_USBOTG_CLK__USBOTG_CLK, MX31_PIN_USBOTG_DIR__USBOTG_DIR,
  82         MX31_PIN_USBOTG_NXT__USBOTG_NXT, MX31_PIN_USBOTG_STP__USBOTG_STP,
  83         MX31_PIN_USB_OC__GPIO1_30,
  84         /* USB H2 */
  85         MX31_PIN_USBH2_DATA0__USBH2_DATA0,
  86         MX31_PIN_USBH2_DATA1__USBH2_DATA1,
  87         MX31_PIN_STXD3__USBH2_DATA2, MX31_PIN_SRXD3__USBH2_DATA3,
  88         MX31_PIN_SCK3__USBH2_DATA4, MX31_PIN_SFS3__USBH2_DATA5,
  89         MX31_PIN_STXD6__USBH2_DATA6, MX31_PIN_SRXD6__USBH2_DATA7,
  90         MX31_PIN_USBH2_CLK__USBH2_CLK, MX31_PIN_USBH2_DIR__USBH2_DIR,
  91         MX31_PIN_USBH2_NXT__USBH2_NXT, MX31_PIN_USBH2_STP__USBH2_STP,
  92         MX31_PIN_SCK6__GPIO1_25,
  93         /* LEDs */
  94         MX31_PIN_SVEN0__GPIO2_0, MX31_PIN_STX0__GPIO2_1,
  95         MX31_PIN_SRX0__GPIO2_2, MX31_PIN_SIMPD0__GPIO2_3,
  96         /* SPI1 */
  97         MX31_PIN_CSPI2_MOSI__MOSI, MX31_PIN_CSPI2_MISO__MISO,
  98         MX31_PIN_CSPI2_SCLK__SCLK, MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
  99         MX31_PIN_CSPI2_SS0__SS0, MX31_PIN_CSPI2_SS2__SS2,
 100         /* Atlas IRQ */
 101         MX31_PIN_GPIO1_3__GPIO1_3,
 102         /* SPI2 */
 103         MX31_PIN_CSPI3_MOSI__MOSI, MX31_PIN_CSPI3_MISO__MISO,
 104         MX31_PIN_CSPI3_SCLK__SCLK, MX31_PIN_CSPI3_SPI_RDY__SPI_RDY,
 105         MX31_PIN_CSPI2_SS1__CSPI3_SS1,
 106         /* SSI */
 107         MX31_PIN_STXD4__STXD4, MX31_PIN_SRXD4__SRXD4,
 108         MX31_PIN_SCK4__SCK4, MX31_PIN_SFS4__SFS4,
 109 };
 110
 111 static struct physmap_flash_data mx31moboard_flash_data = {
 112         .width  = 2,
 113 };
 114
 115 static struct resource mx31moboard_flash_resource = {
 116         .start  = 0xa0000000,
 117         .end    = 0xa1ffffff,
 118         .flags  = IORESOURCE_MEM,
 119 };
 120
 121 static struct platform_device mx31moboard_flash = {
 122         .name   = "physmap-flash",
 123         .id     = 0,
 124         .dev    = {
 125                 .platform_data  = &mx31moboard_flash_data,
 126         },
 127         .resource = &mx31moboard_flash_resource,
 128         .num_resources = 1,
 129 };
 130
 131 static int moboard_uart0_init(struct platform_device *pdev)
 132 {
 133         int ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_CTS1), "uart0-cts-hack");
 134         if (ret)
 135                 return ret;
 136
 137         ret = gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_CTS1), 0);
 138         if (ret)
 139                 gpio_free(IOMUX_TO_GPIO(MX31_PIN_CTS1));
 140
 141         return ret;
 142 }
 143
 144 static void moboard_uart0_exit(struct platform_device *pdev)
 145 {
 146         gpio_free(IOMUX_TO_GPIO(MX31_PIN_CTS1));
 147 }
 148
 149 static const struct imxuart_platform_data uart0_pdata __initconst = {
 150         .init = moboard_uart0_init,
 151         .exit = moboard_uart0_exit,
 152 };
 153
 154 static const struct imxuart_platform_data uart4_pdata __initconst = {
 155         .flags = IMXUART_HAVE_RTSCTS,
 156 };
 157
 158 static const struct imxi2c_platform_data moboard_i2c0_data __initconst = {
 159         .bitrate = 400000,
 160 };
 161
 162 static const struct imxi2c_platform_data moboard_i2c1_data __initconst = {
 163         .bitrate = 100000,
 164 };
 165
 166 static int moboard_spi1_cs[] = {
 167         MXC_SPI_CS(0),
 168         MXC_SPI_CS(2),
 169 };
 170
 171 static const struct spi_imx_master moboard_spi1_pdata __initconst = {
 172         .chipselect     = moboard_spi1_cs,
 173         .num_chipselect = ARRAY_SIZE(moboard_spi1_cs),
 174 };
 175
 176 static struct regulator_consumer_supply sdhc_consumers[] = {
 177         {
 178                 .dev_name = "imx31-mmc.0",
 179                 .supply = "sdhc0_vcc",
 180         },
 181         {
 182                 .dev_name = "imx31-mmc.1",
 183                 .supply = "sdhc1_vcc",
 184         },
 185 };
 186
 187 static struct regulator_init_data sdhc_vreg_data = {
 188         .constraints = {
 189                 .min_uV = 2700000,
 190                 .max_uV = 3000000,
 191                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 192                         REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
 193                 .valid_modes_mask = REGULATOR_MODE_NORMAL |
 194                         REGULATOR_MODE_FAST,
 195                 .always_on = 0,
 196                 .boot_on = 1,
 197         },
 198         .num_consumer_supplies = ARRAY_SIZE(sdhc_consumers),
 199         .consumer_supplies = sdhc_consumers,
 200 };
 201
 202 static struct regulator_consumer_supply cam_consumers[] = {
 203         {
 204                 .dev_name = "mx3_camera.0",
 205                 .supply = "cam_vcc",
 206         },
 207 };
 208
 209 static struct regulator_init_data cam_vreg_data = {
 210         .constraints = {
 211                 .min_uV = 2700000,
 212                 .max_uV = 3000000,
 213                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 214                         REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
 215                 .valid_modes_mask = REGULATOR_MODE_NORMAL |
 216                         REGULATOR_MODE_FAST,
 217                 .always_on = 0,
 218                 .boot_on = 1,
 219         },
 220         .num_consumer_supplies = ARRAY_SIZE(cam_consumers),
 221         .consumer_supplies = cam_consumers,
 222 };
 223
 224 static struct mc13xxx_regulator_init_data moboard_regulators[] = {
 225         {
 226                 .id = MC13783_REG_VMMC1,
 227                 .init_data = &sdhc_vreg_data,
 228         },
 229         {
 230                 .id = MC13783_REG_VCAM,
 231                 .init_data = &cam_vreg_data,
 232         },
 233 };
 234
 235 static struct mc13xxx_led_platform_data moboard_led[] = {
 236         {
 237                 .id = MC13783_LED_R1,
 238                 .name = "coreboard-led-4:red",
 239                 .max_current = 2,
 240         },
 241         {
 242                 .id = MC13783_LED_G1,
 243                 .name = "coreboard-led-4:green",
 244                 .max_current = 2,
 245         },
 246         {
 247                 .id = MC13783_LED_B1,
 248                 .name = "coreboard-led-4:blue",
 249                 .max_current = 2,
 250         },
 251         {
 252                 .id = MC13783_LED_R2,
 253                 .name = "coreboard-led-5:red",
 254                 .max_current = 3,
 255         },
 256         {
 257                 .id = MC13783_LED_G2,
 258                 .name = "coreboard-led-5:green",
 259                 .max_current = 3,
 260         },
 261         {
 262                 .id = MC13783_LED_B2,
 263                 .name = "coreboard-led-5:blue",
 264                 .max_current = 3,
 265         },
 266 };
 267
 268 static struct mc13xxx_leds_platform_data moboard_leds = {
 269         .num_leds = ARRAY_SIZE(moboard_led),
 270         .led = moboard_led,
 271         .led_control[0] = MC13783_LED_C0_ENABLE | MC13783_LED_C0_ABMODE(0),
 272         .led_control[1] = MC13783_LED_C1_SLEWLIM,
 273         .led_control[2] = MC13783_LED_C2_SLEWLIM,
 274         .led_control[3] = MC13783_LED_C3_PERIOD(0),
 275         .led_control[4] = MC13783_LED_C3_PERIOD(0),
 276 };
 277
 278 static struct mc13xxx_buttons_platform_data moboard_buttons = {
 279         .b1on_flags = MC13783_BUTTON_DBNC_750MS | MC13783_BUTTON_ENABLE |
 280                         MC13783_BUTTON_POL_INVERT,
 281         .b1on_key = KEY_POWER,
 282 };
 283
 284 static struct mc13xxx_codec_platform_data moboard_codec = {
 285         .dac_ssi_port = MC13783_SSI1_PORT,
 286         .adc_ssi_port = MC13783_SSI1_PORT,
 287 };
 288
 289 static struct mc13xxx_platform_data moboard_pmic = {
 290         .regulators = {
 291                 .regulators = moboard_regulators,
 292                 .num_regulators = ARRAY_SIZE(moboard_regulators),
 293         },
 294         .leds = &moboard_leds,
 295         .buttons = &moboard_buttons,
 296         .codec = &moboard_codec,
 297         .flags = MC13XXX_USE_RTC | MC13XXX_USE_ADC | MC13XXX_USE_CODEC,
 298 };
 299
 300 static struct imx_ssi_platform_data moboard_ssi_pdata = {
 301         .flags = IMX_SSI_DMA | IMX_SSI_NET,
 302 };
 303
 304 static struct spi_board_info moboard_spi_board_info[] __initdata = {
 305         {
 306                 .modalias = "mc13783",
 307                 /* irq number is run-time assigned */
 308                 .max_speed_hz = 300000,
 309                 .bus_num = 1,
 310                 .chip_select = 0,
 311                 .platform_data = &moboard_pmic,
 312                 .mode = SPI_CS_HIGH,
 313         },
 314 };
 315
 316 static int moboard_spi2_cs[] = {
 317         MXC_SPI_CS(1),
 318 };
 319
 320 static const struct spi_imx_master moboard_spi2_pdata __initconst = {
 321         .chipselect     = moboard_spi2_cs,
 322         .num_chipselect = ARRAY_SIZE(moboard_spi2_cs),
 323 };
 324
 325 #define SDHC1_CD IOMUX_TO_GPIO(MX31_PIN_ATA_CS0)
 326 #define SDHC1_WP IOMUX_TO_GPIO(MX31_PIN_ATA_CS1)
 327
 328 static int moboard_sdhc1_get_ro(struct device *dev)
 329 {
 330         return !gpio_get_value(SDHC1_WP);
 331 }
 332
 333 static int moboard_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
 334                 void *data)
 335 {
 336         int ret;
 337
 338         ret = gpio_request(SDHC1_CD, "sdhc-detect");
 339         if (ret)
 340                 return ret;
 341
 342         gpio_direction_input(SDHC1_CD);
 343
 344         ret = gpio_request(SDHC1_WP, "sdhc-wp");
 345         if (ret)
 346                 goto err_gpio_free;
 347         gpio_direction_input(SDHC1_WP);
 348
 349         ret = request_irq(gpio_to_irq(SDHC1_CD), detect_irq,
 350                 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 351                 "sdhc1-card-detect", data);
 352         if (ret)
 353                 goto err_gpio_free_2;
 354
 355         return 0;
 356
 357 err_gpio_free_2:
 358         gpio_free(SDHC1_WP);
 359 err_gpio_free:
 360         gpio_free(SDHC1_CD);
 361
 362         return ret;
 363 }
 364
 365 static void moboard_sdhc1_exit(struct device *dev, void *data)
 366 {
 367         free_irq(gpio_to_irq(SDHC1_CD), data);
 368         gpio_free(SDHC1_WP);
 369         gpio_free(SDHC1_CD);
 370 }
 371
 372 static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
 373         .get_ro = moboard_sdhc1_get_ro,
 374         .init   = moboard_sdhc1_init,
 375         .exit   = moboard_sdhc1_exit,
 376 };
 377
 378 /*
 379  * this pin is dedicated for all mx31moboard systems, so we do it here
 380  */
 381 #define USB_RESET_B     IOMUX_TO_GPIO(MX31_PIN_GPIO1_0)
 382 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 383                       PAD_CTL_ODE_CMOS)
 384
 385 #define OTG_EN_B IOMUX_TO_GPIO(MX31_PIN_USB_OC)
 386 #define USBH2_EN_B IOMUX_TO_GPIO(MX31_PIN_SCK6)
 387
 388 static void usb_xcvr_reset(void)
 389 {
 390         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG | PAD_CTL_100K_PD);
 391         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG | PAD_CTL_100K_PD);
 392         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG | PAD_CTL_100K_PD);
 393         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG | PAD_CTL_100K_PD);
 394         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG | PAD_CTL_100K_PD);
 395         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG | PAD_CTL_100K_PD);
 396         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG | PAD_CTL_100K_PD);
 397         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG | PAD_CTL_100K_PD);
 398         mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG | PAD_CTL_100K_PU);
 399         mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG | PAD_CTL_100K_PU);
 400         mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG | PAD_CTL_100K_PU);
 401         mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG | PAD_CTL_100K_PU);
 402
 403         mxc_iomux_set_gpr(MUX_PGP_UH2, true);
 404         mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG | PAD_CTL_100K_PU);
 405         mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG | PAD_CTL_100K_PU);
 406         mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG | PAD_CTL_100K_PU);
 407         mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG | PAD_CTL_100K_PU);
 408         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG | PAD_CTL_100K_PD);
 409         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG | PAD_CTL_100K_PD);
 410         mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG | PAD_CTL_100K_PD);
 411         mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG | PAD_CTL_100K_PD);
 412         mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG | PAD_CTL_100K_PD);
 413         mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG | PAD_CTL_100K_PD);
 414         mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG | PAD_CTL_100K_PD);
 415         mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG | PAD_CTL_100K_PD);
 416
 417         gpio_request(OTG_EN_B, "usb-udc-en");
 418         gpio_direction_output(OTG_EN_B, 0);
 419         gpio_request(USBH2_EN_B, "usbh2-en");
 420         gpio_direction_output(USBH2_EN_B, 0);
 421
 422         gpio_request(USB_RESET_B, "usb-reset");
 423         gpio_direction_output(USB_RESET_B, 0);
 424         mdelay(1);
 425         gpio_set_value(USB_RESET_B, 1);
 426         mdelay(1);
 427 }
 428
 429 static int moboard_usbh2_init_hw(struct platform_device *pdev)
 430 {
 431         return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
 432 }
 433
 434 static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
 435         .init   = moboard_usbh2_init_hw,
 436         .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
 437 };
 438
 439 static int __init moboard_usbh2_init(void)
 440 {
 441         struct platform_device *pdev;
 442
 443         usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
 444                         ULPI_OTG_DRVVBUS_EXT);
 445         if (!usbh2_pdata.otg)
 446                 return -ENODEV;
 447
 448         pdev = imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
 449         if (IS_ERR(pdev))
 450                 return PTR_ERR(pdev);
 451
 452         return 0;
 453 }
 454
 455 static const struct gpio_led mx31moboard_leds[] __initconst = {
 456         {
 457                 .name   = "coreboard-led-0:red:running",
 458                 .default_trigger = "heartbeat",
 459                 .gpio   = IOMUX_TO_GPIO(MX31_PIN_SVEN0),
 460         }, {
 461                 .name   = "coreboard-led-1:red",
 462                 .gpio   = IOMUX_TO_GPIO(MX31_PIN_STX0),
 463         }, {
 464                 .name   = "coreboard-led-2:red",
 465                 .gpio   = IOMUX_TO_GPIO(MX31_PIN_SRX0),
 466         }, {
 467                 .name   = "coreboard-led-3:red",
 468                 .gpio   = IOMUX_TO_GPIO(MX31_PIN_SIMPD0),
 469         },
 470 };
 471
 472 static const struct gpio_led_platform_data mx31moboard_led_pdata __initconst = {
 473         .num_leds       = ARRAY_SIZE(mx31moboard_leds),
 474         .leds           = mx31moboard_leds,
 475 };
 476
 477 static struct platform_device *devices[] __initdata = {
 478         &mx31moboard_flash,
 479 };
 480
 481 static struct mx3_camera_pdata camera_pdata __initdata = {
 482         .flags          = MX3_CAMERA_DATAWIDTH_8 | MX3_CAMERA_DATAWIDTH_10,
 483         .mclk_10khz     = 4800,
 484 };
 485
 486 static phys_addr_t mx3_camera_base __initdata;
 487 #define MX3_CAMERA_BUF_SIZE SZ_4M
 488
 489 static int __init mx31moboard_init_cam(void)
 490 {
 491         int dma, ret = -ENOMEM;
 492         struct platform_device *pdev;
 493
 494         imx31_add_ipu_core();
 495
 496         pdev = imx31_alloc_mx3_camera(&camera_pdata);
 497         if (IS_ERR(pdev))
 498                 return PTR_ERR(pdev);
 499
 500         dma = dma_declare_coherent_memory(&pdev->dev,
 501                                         mx3_camera_base, mx3_camera_base,
 502                                         MX3_CAMERA_BUF_SIZE,
 503                                         DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE);
 504         if (!(dma & DMA_MEMORY_MAP))
 505                 goto err;
 506
 507         ret = platform_device_add(pdev);
 508         if (ret)
 509 err:
 510                 platform_device_put(pdev);
 511
 512         return ret;
 513
 514 }
 515
 516 static void mx31moboard_poweroff(void)
 517 {
 518         struct clk *clk = clk_get_sys("imx2-wdt.0", NULL);
 519
 520         if (!IS_ERR(clk))
 521                 clk_prepare_enable(clk);
 522
 523         mxc_iomux_mode(MX31_PIN_WATCHDOG_RST__WATCHDOG_RST);
 524
 525         __raw_writew(1 << 6 | 1 << 2, MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
 526 }
 527
 528 static int mx31moboard_baseboard;
 529 core_param(mx31moboard_baseboard, mx31moboard_baseboard, int, 0444);
 530
 531 /*
 532  * Board specific initialization.
 533  */
 534 static void __init mx31moboard_init(void)
 535 {
 536         imx31_soc_init();
 537
 538         mxc_iomux_setup_multiple_pins(moboard_pins, ARRAY_SIZE(moboard_pins),
 539                 "moboard");
 540
 541         platform_add_devices(devices, ARRAY_SIZE(devices));
 542         gpio_led_register_device(-1, &mx31moboard_led_pdata);
 543
 544         imx31_add_imx2_wdt();
 545
 546         imx31_add_imx_uart0(&uart0_pdata);
 547         imx31_add_imx_uart4(&uart4_pdata);
 548
 549         imx31_add_imx_i2c0(&moboard_i2c0_data);
 550         imx31_add_imx_i2c1(&moboard_i2c1_data);
 551
 552         imx31_add_spi_imx1(&moboard_spi1_pdata);
 553         imx31_add_spi_imx2(&moboard_spi2_pdata);
 554
 555         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3), "pmic-irq");
 556         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
 557         moboard_spi_board_info[0].irq =
 558                         gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
 559         spi_register_board_info(moboard_spi_board_info,
 560                 ARRAY_SIZE(moboard_spi_board_info));
 561
 562         imx31_add_mxc_mmc(0, &sdhc1_pdata);
 563
 564         mx31moboard_init_cam();
 565
 566         usb_xcvr_reset();
 567
 568         moboard_usbh2_init();
 569
 570         imx31_add_imx_ssi(0, &moboard_ssi_pdata);
 571
 572         imx_add_platform_device("imx_mc13783", 0, NULL, 0, NULL, 0);
 573
 574         pm_power_off = mx31moboard_poweroff;
 575
 576         switch (mx31moboard_baseboard) {
 577         case MX31NOBOARD:
 578                 break;
 579         case MX31DEVBOARD:
 580                 mx31moboard_devboard_init();
 581                 break;
 582         case MX31MARXBOT:
 583                 mx31moboard_marxbot_init();
 584                 break;
 585         case MX31SMARTBOT:
 586         case MX31EYEBOT:
 587                 mx31moboard_smartbot_init(mx31moboard_baseboard);
 588                 break;
 589         default:
 590                 printk(KERN_ERR "Illegal mx31moboard_baseboard type %d\n",
 591                         mx31moboard_baseboard);
 592         }
 593 }
 594
 595 static void __init mx31moboard_timer_init(void)
 596 {
 597         mx31_clocks_init(26000000);
 598 }
 599
 600 static void __init mx31moboard_reserve(void)
 601 {
 602         /* reserve 4 MiB for mx3-camera */
 603         mx3_camera_base = arm_memblock_steal(MX3_CAMERA_BUF_SIZE,
 604                         MX3_CAMERA_BUF_SIZE);
 605 }
 606
 607 MACHINE_START(MX31MOBOARD, "EPFL Mobots mx31moboard")
 608         /* Maintainer: Philippe Retornaz, EPFL Mobots group */
 609         .atag_offset = 0x100,
 610         .reserve = mx31moboard_reserve,
 611         .map_io = mx31_map_io,
 612         .init_early = imx31_init_early,
 613         .init_irq = mx31_init_irq,
 614         .handle_irq = imx31_handle_irq,
 615         .init_time      = mx31moboard_timer_init,
 616         .init_machine = mx31moboard_init,
 617         .restart        = mxc_restart,
 618 MACHINE_END