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ezbrd.c

/*
 * File:         arch/blackfin/mach-bf527/boards/ezbrd.c
 * Based on:     arch/blackfin/mach-bf537/boards/stamp.c
 * Author:       Aidan Williams <aidan@nicta.com.au>
 *
 * Created:
 * Description:
 *
 * Modified:
 *               Copyright 2005 National ICT Australia (NICTA)
 *               Copyright 2004-2008 Analog Devices Inc.
 *
 * Bugs:         Enter bugs at http://blackfin.uclinux.org/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see the file COPYING, or write
 * to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>

#include <linux/i2c.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/usb/musb.h>
#include <asm/dma.h>
#include <asm/bfin5xx_spi.h>
#include <asm/reboot.h>
#include <asm/nand.h>
#include <asm/portmux.h>
#include <asm/dpmc.h>
#include <linux/spi/ad7877.h>

/*
 * Name the Board for the /proc/cpuinfo
 */
const char bfin_board_name[] = "BF526-EZBRD";

/*
 *  Driver needs to know address, irq and flag pin.
 */

#if defined(CONFIG_USB_MUSB_HDRC) || defined(CONFIG_USB_MUSB_HDRC_MODULE)
static struct resource musb_resources[] = {
      [0] = {
            .start      = 0xffc03800,
            .end  = 0xffc03cff,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {     /* general IRQ */
            .start      = IRQ_USB_INT0,
            .end  = IRQ_USB_INT0,
            .flags      = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
      },
      [2] = {     /* DMA IRQ */
            .start      = IRQ_USB_DMA,
            .end  = IRQ_USB_DMA,
            .flags      = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
      },
};

static struct musb_hdrc_config musb_config = {
      .multipoint = 0,
      .dyn_fifo   = 0,
      .soft_con   = 1,
      .dma        = 1,
      .num_eps    = 7,
      .dma_channels     = 7,
      .gpio_vrsel = GPIO_PG13,
};

static struct musb_hdrc_platform_data musb_plat = {
#if defined(CONFIG_USB_MUSB_OTG)
      .mode       = MUSB_OTG,
#elif defined(CONFIG_USB_MUSB_HDRC_HCD)
      .mode       = MUSB_HOST,
#elif defined(CONFIG_USB_GADGET_MUSB_HDRC)
      .mode       = MUSB_PERIPHERAL,
#endif
      .config           = &musb_config,
};

static u64 musb_dmamask = ~(u32)0;

static struct platform_device musb_device = {
      .name       = "musb_hdrc",
      .id         = 0,
      .dev = {
            .dma_mask         = &musb_dmamask,
            .coherent_dma_mask      = 0xffffffff,
            .platform_data          = &musb_plat,
      },
      .num_resources    = ARRAY_SIZE(musb_resources),
      .resource   = musb_resources,
};
#endif

#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
static struct mtd_partition ezbrd_partitions[] = {
      {
            .name       = "bootloader(nor)",
            .size       = 0x40000,
            .offset     = 0,
      }, {
            .name       = "linux kernel(nor)",
            .size       = 0x1C0000,
            .offset     = MTDPART_OFS_APPEND,
      }, {
            .name       = "file system(nor)",
            .size       = MTDPART_SIZ_FULL,
            .offset     = MTDPART_OFS_APPEND,
      }
};

static struct physmap_flash_data ezbrd_flash_data = {
      .width      = 2,
      .parts      = ezbrd_partitions,
      .nr_parts   = ARRAY_SIZE(ezbrd_partitions),
};

static struct resource ezbrd_flash_resource = {
      .start = 0x20000000,
      .end   = 0x203fffff,
      .flags = IORESOURCE_MEM,
};

static struct platform_device ezbrd_flash_device = {
      .name          = "physmap-flash",
      .id            = 0,
      .dev = {
            .platform_data = &ezbrd_flash_data,
      },
      .num_resources = 1,
      .resource      = &ezbrd_flash_resource,
};
#endif

#if defined(CONFIG_MTD_NAND_BF5XX) || defined(CONFIG_MTD_NAND_BF5XX_MODULE)
static struct mtd_partition partition_info[] = {
      {
            .name = "linux kernel(nand)",
            .offset = 0,
            .size = 4 * 1024 * 1024,
      },
      {
            .name = "file system(nand)",
            .offset = MTDPART_OFS_APPEND,
            .size = MTDPART_SIZ_FULL,
      },
};

static struct bf5xx_nand_platform bf5xx_nand_platform = {
      .page_size = NFC_PG_SIZE_256,
      .data_width = NFC_NWIDTH_8,
      .partitions = partition_info,
      .nr_partitions = ARRAY_SIZE(partition_info),
      .rd_dly = 3,
      .wr_dly = 3,
};

static struct resource bf5xx_nand_resources[] = {
      {
            .start = NFC_CTL,
            .end = NFC_DATA_RD + 2,
            .flags = IORESOURCE_MEM,
      },
      {
            .start = CH_NFC,
            .end = CH_NFC,
            .flags = IORESOURCE_IRQ,
      },
};

static struct platform_device bf5xx_nand_device = {
      .name = "bf5xx-nand",
      .id = 0,
      .num_resources = ARRAY_SIZE(bf5xx_nand_resources),
      .resource = bf5xx_nand_resources,
      .dev = {
            .platform_data = &bf5xx_nand_platform,
      },
};
#endif

#if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
static struct platform_device rtc_device = {
      .name = "rtc-bfin",
      .id   = -1,
};
#endif


#if defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)
static struct platform_device bfin_mac_device = {
      .name = "bfin_mac",
};
#endif

#if defined(CONFIG_MTD_M25P80) \
      || defined(CONFIG_MTD_M25P80_MODULE)
static struct mtd_partition bfin_spi_flash_partitions[] = {
      {
            .name = "bootloader(spi)",
            .size = 0x00040000,
            .offset = 0,
            .mask_flags = MTD_CAP_ROM
      }, {
            .name = "linux kernel(spi)",
            .size = MTDPART_SIZ_FULL,
            .offset = MTDPART_OFS_APPEND,
      }
};

static struct flash_platform_data bfin_spi_flash_data = {
      .name = "m25p80",
      .parts = bfin_spi_flash_partitions,
      .nr_parts = ARRAY_SIZE(bfin_spi_flash_partitions),
      .type = "m25p16",
};

/* SPI flash chip (m25p64) */
static struct bfin5xx_spi_chip spi_flash_chip_info = {
      .enable_dma = 0,         /* use dma transfer with this chip*/
      .bits_per_word = 8,
};
#endif

#if defined(CONFIG_SPI_ADC_BF533) \
      || defined(CONFIG_SPI_ADC_BF533_MODULE)
/* SPI ADC chip */
static struct bfin5xx_spi_chip spi_adc_chip_info = {
      .enable_dma = 1,         /* use dma transfer with this chip*/
      .bits_per_word = 16,
};
#endif

#if defined(CONFIG_SPI_MMC) || defined(CONFIG_SPI_MMC_MODULE)
static struct bfin5xx_spi_chip spi_mmc_chip_info = {
      .enable_dma = 1,
      .bits_per_word = 8,
};
#endif

#if defined(CONFIG_PBX)
static struct bfin5xx_spi_chip spi_si3xxx_chip_info = {
      .ctl_reg    = 0x4, /* send zero */
      .enable_dma = 0,
      .bits_per_word    = 8,
      .cs_change_per_word = 1,
};
#endif

#if defined(CONFIG_TOUCHSCREEN_AD7877) || defined(CONFIG_TOUCHSCREEN_AD7877_MODULE)
static struct bfin5xx_spi_chip spi_ad7877_chip_info = {
      .enable_dma = 0,
      .bits_per_word = 16,
};

static const struct ad7877_platform_data bfin_ad7877_ts_info = {
      .model                  = 7877,
      .vref_delay_usecs = 50, /* internal, no capacitor */
      .x_plate_ohms           = 419,
      .y_plate_ohms           = 486,
      .pressure_max           = 1000,
      .pressure_min           = 0,
      .stopacq_polarity       = 1,
      .first_conversion_delay = 3,
      .acquisition_time       = 1,
      .averaging        = 1,
      .pen_down_acc_interval  = 1,
};
#endif

#if defined(CONFIG_SND_SOC_WM8731) || defined(CONFIG_SND_SOC_WM8731_MODULE) \
       && defined(CONFIG_SND_SOC_WM8731_SPI)
static struct bfin5xx_spi_chip spi_wm8731_chip_info = {
      .enable_dma = 0,
      .bits_per_word = 16,
};
#endif

#if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE)
static struct bfin5xx_spi_chip spidev_chip_info = {
      .enable_dma = 0,
      .bits_per_word = 8,
};
#endif

#if defined(CONFIG_FB_BFIN_LQ035Q1) || defined(CONFIG_FB_BFIN_LQ035Q1_MODULE)
static struct bfin5xx_spi_chip lq035q1_spi_chip_info = {
      .enable_dma = 0,
      .bits_per_word = 8,
};
#endif

static struct spi_board_info bfin_spi_board_info[] __initdata = {
#if defined(CONFIG_MTD_M25P80) \
      || defined(CONFIG_MTD_M25P80_MODULE)
      {
            /* the modalias must be the same as spi device driver name */
            .modalias = "m25p80", /* Name of spi_driver for this device */
            .max_speed_hz = 25000000,     /* max spi clock (SCK) speed in HZ */
            .bus_num = 0, /* Framework bus number */
            .chip_select = 1, /* Framework chip select. On STAMP537 it is SPISSEL1*/
            .platform_data = &bfin_spi_flash_data,
            .controller_data = &spi_flash_chip_info,
            .mode = SPI_MODE_3,
      },
#endif

#if defined(CONFIG_SPI_ADC_BF533) \
      || defined(CONFIG_SPI_ADC_BF533_MODULE)
      {
            .modalias = "bfin_spi_adc", /* Name of spi_driver for this device */
            .max_speed_hz = 6250000,     /* max spi clock (SCK) speed in HZ */
            .bus_num = 0, /* Framework bus number */
            .chip_select = 1, /* Framework chip select. */
            .platform_data = NULL, /* No spi_driver specific config */
            .controller_data = &spi_adc_chip_info,
      },
#endif

#if defined(CONFIG_SPI_MMC) || defined(CONFIG_SPI_MMC_MODULE)
      {
            .modalias = "spi_mmc_dummy",
            .max_speed_hz = 25000000,     /* max spi clock (SCK) speed in HZ */
            .bus_num = 0,
            .chip_select = 0,
            .platform_data = NULL,
            .controller_data = &spi_mmc_chip_info,
            .mode = SPI_MODE_3,
      },
      {
            .modalias = "spi_mmc",
            .max_speed_hz = 25000000,     /* max spi clock (SCK) speed in HZ */
            .bus_num = 0,
            .chip_select = CONFIG_SPI_MMC_CS_CHAN,
            .platform_data = NULL,
            .controller_data = &spi_mmc_chip_info,
            .mode = SPI_MODE_3,
      },
#endif
#if defined(CONFIG_PBX)
      {
            .modalias = "fxs-spi",
            .max_speed_hz = 12500000,     /* max spi clock (SCK) speed in HZ */
            .bus_num = 0,
            .chip_select = 8 - CONFIG_J11_JUMPER,
            .controller_data = &spi_si3xxx_chip_info,
            .mode = SPI_MODE_3,
      },
      {
            .modalias = "fxo-spi",
            .max_speed_hz = 12500000,     /* max spi clock (SCK) speed in HZ */
            .bus_num = 0,
            .chip_select = 8 - CONFIG_J19_JUMPER,
            .controller_data = &spi_si3xxx_chip_info,
            .mode = SPI_MODE_3,
      },
#endif
#if defined(CONFIG_TOUCHSCREEN_AD7877) || defined(CONFIG_TOUCHSCREEN_AD7877_MODULE)
      {
            .modalias         = "ad7877",
            .platform_data          = &bfin_ad7877_ts_info,
            .irq              = IRQ_PF8,
            .max_speed_hz     = 12500000,     /* max spi clock (SCK) speed in HZ */
            .bus_num    = 0,
            .chip_select  = 2,
            .controller_data = &spi_ad7877_chip_info,
      },
#endif
#if defined(CONFIG_SND_SOC_WM8731) || defined(CONFIG_SND_SOC_WM8731_MODULE) \
       && defined(CONFIG_SND_SOC_WM8731_SPI)
      {
            .modalias   = "wm8731",
            .max_speed_hz     = 3125000,     /* max spi clock (SCK) speed in HZ */
            .bus_num    = 0,
            .chip_select    = 5,
            .controller_data = &spi_wm8731_chip_info,
            .mode = SPI_MODE_0,
      },
#endif
#if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE)
      {
            .modalias = "spidev",
            .max_speed_hz = 3125000,     /* max spi clock (SCK) speed in HZ */
            .bus_num = 0,
            .chip_select = 1,
            .controller_data = &spidev_chip_info,
      },
#endif
#if defined(CONFIG_FB_BFIN_LQ035Q1) || defined(CONFIG_FB_BFIN_LQ035Q1_MODULE)
      {
            .modalias = "bfin-lq035q1-spi",
            .max_speed_hz = 20000000,     /* max spi clock (SCK) speed in HZ */
            .bus_num = 0,
            .chip_select = 1,
            .controller_data = &lq035q1_spi_chip_info,
            .mode = SPI_CPHA | SPI_CPOL,
      },
#endif
};

#if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
/* SPI controller data */
static struct bfin5xx_spi_master bfin_spi0_info = {
      .num_chipselect = 8,
      .enable_dma = 1,  /* master has the ability to do dma transfer */
      .pin_req = {P_SPI0_SCK, P_SPI0_MISO, P_SPI0_MOSI, 0},
};

/* SPI (0) */
static struct resource bfin_spi0_resource[] = {
      [0] = {
            .start = SPI0_REGBASE,
            .end   = SPI0_REGBASE + 0xFF,
            .flags = IORESOURCE_MEM,
            },
      [1] = {
            .start = CH_SPI,
            .end   = CH_SPI,
            .flags = IORESOURCE_IRQ,
      },
};

static struct platform_device bfin_spi0_device = {
      .name = "bfin-spi",
      .id = 0, /* Bus number */
      .num_resources = ARRAY_SIZE(bfin_spi0_resource),
      .resource = bfin_spi0_resource,
      .dev = {
            .platform_data = &bfin_spi0_info, /* Passed to driver */
      },
};
#endif  /* spi master and devices */

#if defined(CONFIG_SERIAL_BFIN) || defined(CONFIG_SERIAL_BFIN_MODULE)
static struct resource bfin_uart_resources[] = {
#ifdef CONFIG_SERIAL_BFIN_UART0
      {
            .start = 0xFFC00400,
            .end = 0xFFC004FF,
            .flags = IORESOURCE_MEM,
      },
#endif
#ifdef CONFIG_SERIAL_BFIN_UART1
      {
            .start = 0xFFC02000,
            .end = 0xFFC020FF,
            .flags = IORESOURCE_MEM,
      },
#endif
};

static struct platform_device bfin_uart_device = {
      .name = "bfin-uart",
      .id = 1,
      .num_resources = ARRAY_SIZE(bfin_uart_resources),
      .resource = bfin_uart_resources,
};
#endif

#if defined(CONFIG_BFIN_SIR) || defined(CONFIG_BFIN_SIR_MODULE)
static struct resource bfin_sir_resources[] = {
#ifdef CONFIG_BFIN_SIR0
      {
            .start = 0xFFC00400,
            .end = 0xFFC004FF,
            .flags = IORESOURCE_MEM,
      },
#endif
#ifdef CONFIG_BFIN_SIR1
      {
            .start = 0xFFC02000,
            .end = 0xFFC020FF,
            .flags = IORESOURCE_MEM,
      },
#endif
};

static struct platform_device bfin_sir_device = {
      .name = "bfin_sir",
      .id = 0,
      .num_resources = ARRAY_SIZE(bfin_sir_resources),
      .resource = bfin_sir_resources,
};
#endif

#if defined(CONFIG_I2C_BLACKFIN_TWI) || defined(CONFIG_I2C_BLACKFIN_TWI_MODULE)
static struct resource bfin_twi0_resource[] = {
      [0] = {
            .start = TWI0_REGBASE,
            .end   = TWI0_REGBASE,
            .flags = IORESOURCE_MEM,
      },
      [1] = {
            .start = IRQ_TWI,
            .end   = IRQ_TWI,
            .flags = IORESOURCE_IRQ,
      },
};

static struct platform_device i2c_bfin_twi_device = {
      .name = "i2c-bfin-twi",
      .id = 0,
      .num_resources = ARRAY_SIZE(bfin_twi0_resource),
      .resource = bfin_twi0_resource,
};
#endif

#ifdef CONFIG_I2C_BOARDINFO
static struct i2c_board_info __initdata bfin_i2c_board_info[] = {
#if defined(CONFIG_TWI_LCD) || defined(CONFIG_TWI_LCD_MODULE)
      {
            I2C_BOARD_INFO("pcf8574_lcd", 0x22),
      },
#endif
#if defined(CONFIG_TWI_KEYPAD) || defined(CONFIG_TWI_KEYPAD_MODULE)
      {
            I2C_BOARD_INFO("pcf8574_keypad", 0x27),
            .irq = IRQ_PF8,
      },
#endif
};
#endif

#if defined(CONFIG_SERIAL_BFIN_SPORT) || defined(CONFIG_SERIAL_BFIN_SPORT_MODULE)
static struct platform_device bfin_sport0_uart_device = {
      .name = "bfin-sport-uart",
      .id = 0,
};

static struct platform_device bfin_sport1_uart_device = {
      .name = "bfin-sport-uart",
      .id = 1,
};
#endif

#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
#include <linux/input.h>
#include <linux/gpio_keys.h>

static struct gpio_keys_button bfin_gpio_keys_table[] = {
      {BTN_0, GPIO_PG0, 1, "gpio-keys: BTN0"},
      {BTN_1, GPIO_PG13, 1, "gpio-keys: BTN1"},
};

static struct gpio_keys_platform_data bfin_gpio_keys_data = {
      .buttons        = bfin_gpio_keys_table,
      .nbuttons       = ARRAY_SIZE(bfin_gpio_keys_table),
};

static struct platform_device bfin_device_gpiokeys = {
      .name      = "gpio-keys",
      .dev = {
            .platform_data = &bfin_gpio_keys_data,
      },
};
#endif

static struct resource bfin_gpios_resources = {
      .start = 0,
      .end   = MAX_BLACKFIN_GPIOS - 1,
      .flags = IORESOURCE_IRQ,
};

static struct platform_device bfin_gpios_device = {
      .name = "simple-gpio",
      .id = -1,
      .num_resources = 1,
      .resource = &bfin_gpios_resources,
};

static const unsigned int cclk_vlev_datasheet[] =
{
      VRPAIR(VLEV_100, 400000000),
      VRPAIR(VLEV_105, 426000000),
      VRPAIR(VLEV_110, 500000000),
      VRPAIR(VLEV_115, 533000000),
      VRPAIR(VLEV_120, 600000000),
};

static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
      .tuple_tab = cclk_vlev_datasheet,
      .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
      .vr_settling_time = 25 /* us */,
};

static struct platform_device bfin_dpmc = {
      .name = "bfin dpmc",
      .dev = {
            .platform_data = &bfin_dmpc_vreg_data,
      },
};

#if defined(CONFIG_FB_BFIN_LQ035Q1) || defined(CONFIG_FB_BFIN_LQ035Q1_MODULE)
#include <asm/bfin-lq035q1.h>

static struct bfin_lq035q1fb_disp_info bfin_lq035q1_data = {
      .mode =     LQ035_NORM | LQ035_RGB | LQ035_RL | LQ035_TB,
      .use_bl =   1,
      .gpio_bl =  GPIO_PG12,
};

static struct resource bfin_lq035q1_resources[] = {
      {
            .start = IRQ_PPI_ERROR,
            .end = IRQ_PPI_ERROR,
            .flags = IORESOURCE_IRQ,
      },
};

static struct platform_device bfin_lq035q1_device = {
      .name       = "bfin-lq035q1",
      .id         = -1,
      .num_resources    = ARRAY_SIZE(bfin_lq035q1_resources),
      .resource   = bfin_lq035q1_resources,
      .dev        = {
            .platform_data = &bfin_lq035q1_data,
      },
};
#endif

static struct platform_device *stamp_devices[] __initdata = {

      &bfin_dpmc,

#if defined(CONFIG_MTD_NAND_BF5XX) || defined(CONFIG_MTD_NAND_BF5XX_MODULE)
      &bf5xx_nand_device,
#endif

#if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
      &rtc_device,
#endif

#if defined(CONFIG_USB_MUSB_HDRC) || defined(CONFIG_USB_MUSB_HDRC_MODULE)
      &musb_device,
#endif

#if defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)
      &bfin_mac_device,
#endif

#if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
      &bfin_spi0_device,
#endif

#if defined(CONFIG_SERIAL_BFIN) || defined(CONFIG_SERIAL_BFIN_MODULE)
      &bfin_uart_device,
#endif

#if defined(CONFIG_FB_BFIN_LQ035Q1) || defined(CONFIG_FB_BFIN_LQ035Q1_MODULE)
      &bfin_lq035q1_device,
#endif

#if defined(CONFIG_BFIN_SIR) || defined(CONFIG_BFIN_SIR_MODULE)
      &bfin_sir_device,
#endif

#if defined(CONFIG_I2C_BLACKFIN_TWI) || defined(CONFIG_I2C_BLACKFIN_TWI_MODULE)
      &i2c_bfin_twi_device,
#endif

#if defined(CONFIG_SERIAL_BFIN_SPORT) || defined(CONFIG_SERIAL_BFIN_SPORT_MODULE)
      &bfin_sport0_uart_device,
      &bfin_sport1_uart_device,
#endif

#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
      &bfin_device_gpiokeys,
#endif

#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
      &ezbrd_flash_device,
#endif

      &bfin_gpios_device,
};

static int __init stamp_init(void)
{
      printk(KERN_INFO "%s(): registering device resources\n", __func__);

#ifdef CONFIG_I2C_BOARDINFO
      i2c_register_board_info(0, bfin_i2c_board_info,
                        ARRAY_SIZE(bfin_i2c_board_info));
#endif

      platform_add_devices(stamp_devices, ARRAY_SIZE(stamp_devices));
      spi_register_board_info(bfin_spi_board_info, ARRAY_SIZE(bfin_spi_board_info));
      return 0;
}

arch_initcall(stamp_init);

void native_machine_restart(char *cmd)
{
      /* workaround reboot hang when booting from SPI */
      if ((bfin_read_SYSCR() & 0x7) == 0x3)
            bfin_gpio_reset_spi0_ssel1();
}

void bfin_get_ether_addr(char *addr)
{
      /* the MAC is stored in OTP memory page 0xDF */
      u32 ret;
      u64 otp_mac;
      u32 (*otp_read)(u32 page, u32 flags, u64 *page_content) = (void *)0xEF00001A;

      ret = otp_read(0xDF, 0x00, &otp_mac);
      if (!(ret & 0x1)) {
            char *otp_mac_p = (char *)&otp_mac;
            for (ret = 0; ret < 6; ++ret)
                  addr[ret] = otp_mac_p[5 - ret];
      }
}
EXPORT_SYMBOL(bfin_get_ether_addr);

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