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minotaur.c

/*
 * Copyright 2004-2009 Analog Devices Inc.
 *           2008-2009 Cambridge Signal Processing
 *                2005 National ICT Australia (NICTA)
 *                      Aidan Williams <aidan@nicta.com.au>
 *
 * Licensed under the GPL-2 or later.
 */

#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
#if defined(CONFIG_USB_ISP1362_HCD) || defined(CONFIG_USB_ISP1362_HCD_MODULE)
#include <linux/usb/isp1362.h>
#endif
#include <linux/ata_platform.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/usb/sl811.h>
#include <asm/dma.h>
#include <asm/bfin5xx_spi.h>
#include <asm/reboot.h>
#include <linux/spi/ad7877.h>

/*
 * Name the Board for the /proc/cpuinfo
 */
char *bfin_board_name = "CamSig Minotaur BF537";

#if defined(CONFIG_BFIN_CFPCMCIA) || defined(CONFIG_BFIN_CFPCMCIA_MODULE)
static struct resource bfin_pcmcia_cf_resources[] = {
      {
            .start = 0x20310000, /* IO PORT */
            .end = 0x20312000,
            .flags = IORESOURCE_MEM,
      }, {
            .start = 0x20311000, /* Attribute Memory */
            .end = 0x20311FFF,
            .flags = IORESOURCE_MEM,
      }, {
            .start = IRQ_PF4,
            .end = IRQ_PF4,
            .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
      }, {
            .start = IRQ_PF6, /* Card Detect PF6 */
            .end = IRQ_PF6,
            .flags = IORESOURCE_IRQ,
      },
};

static struct platform_device bfin_pcmcia_cf_device = {
      .name = "bfin_cf_pcmcia",
      .id = -1,
      .num_resources = ARRAY_SIZE(bfin_pcmcia_cf_resources),
      .resource = bfin_pcmcia_cf_resources,
};
#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_mii_bus = {
      .name = "bfin_mii_bus",
};

static struct platform_device bfin_mac_device = {
      .name = "bfin_mac",
      .dev.platform_data = &bfin_mii_bus,
};
#endif

#if defined(CONFIG_USB_NET2272) || defined(CONFIG_USB_NET2272_MODULE)
static struct resource net2272_bfin_resources[] = {
      {
            .start = 0x20300000,
            .end = 0x20300000 + 0x100,
            .flags = IORESOURCE_MEM,
      }, {
            .start = IRQ_PF7,
            .end = IRQ_PF7,
            .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
      },
};

static struct platform_device net2272_bfin_device = {
      .name = "net2272",
      .id = -1,
      .num_resources = ARRAY_SIZE(net2272_bfin_resources),
      .resource = net2272_bfin_resources,
};
#endif

#if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
/* all SPI peripherals info goes here */

#if defined(CONFIG_MTD_M25P80) \
      || defined(CONFIG_MTD_M25P80_MODULE)

/* Partition sizes */
#define FLASH_SIZE       0x00400000
#define PSIZE_UBOOT      0x00030000
#define PSIZE_INITRAMFS  0x00240000

static struct mtd_partition bfin_spi_flash_partitions[] = {
      {
            .name       = "bootloader(spi)",
            .size       = PSIZE_UBOOT,
            .offset     = 0x000000,
            .mask_flags = MTD_CAP_ROM
      }, {
            .name       = "initramfs(spi)",
            .size       = PSIZE_INITRAMFS,
            .offset     = PSIZE_UBOOT
      }, {
            .name       = "opt(spi)",
            .size       = FLASH_SIZE - (PSIZE_UBOOT + PSIZE_INITRAMFS),
            .offset     = PSIZE_UBOOT + PSIZE_INITRAMFS,
      }
};

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 = "m25p64",
};

/* 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_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
static struct bfin5xx_spi_chip mmc_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_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
      {
            .modalias = "mmc_spi",
            .max_speed_hz = 5000000,     /* max spi clock (SCK) speed in HZ */
            .bus_num = 0,
            .chip_select = 5,
            .controller_data = &mmc_spi_chip_info,
            .mode = SPI_MODE_3,
      },
#endif
};

/* 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 */
};

/* 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_DMA,
      },
      [2] = {
            .start = IRQ_SPI,
            .end   = IRQ_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[] = {
      {
            .start = 0xFFC00400,
            .end = 0xFFC004FF,
            .flags = IORESOURCE_MEM,
      }, {
            .start = 0xFFC02000,
            .end = 0xFFC020FF,
            .flags = IORESOURCE_MEM,
      },
};

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)
#ifdef CONFIG_BFIN_SIR0
static struct resource bfin_sir0_resources[] = {
      {
            .start = 0xFFC00400,
            .end = 0xFFC004FF,
            .flags = IORESOURCE_MEM,
      },
      {
            .start = IRQ_UART0_RX,
            .end = IRQ_UART0_RX+1,
            .flags = IORESOURCE_IRQ,
      },
      {
            .start = CH_UART0_RX,
            .end = CH_UART0_RX+1,
            .flags = IORESOURCE_DMA,
      },
};

static struct platform_device bfin_sir0_device = {
      .name = "bfin_sir",
      .id = 0,
      .num_resources = ARRAY_SIZE(bfin_sir0_resources),
      .resource = bfin_sir0_resources,
};
#endif
#ifdef CONFIG_BFIN_SIR1
static struct resource bfin_sir1_resources[] = {
      {
            .start = 0xFFC02000,
            .end = 0xFFC020FF,
            .flags = IORESOURCE_MEM,
      },
      {
            .start = IRQ_UART1_RX,
            .end = IRQ_UART1_RX+1,
            .flags = IORESOURCE_IRQ,
      },
      {
            .start = CH_UART1_RX,
            .end = CH_UART1_RX+1,
            .flags = IORESOURCE_DMA,
      },
};

static struct platform_device bfin_sir1_device = {
      .name = "bfin_sir",
      .id = 1,
      .num_resources = ARRAY_SIZE(bfin_sir1_resources),
      .resource = bfin_sir1_resources,
};
#endif
#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 + 0xFF,
            .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

#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

static struct platform_device *minotaur_devices[] __initdata = {
#if defined(CONFIG_BFIN_CFPCMCIA) || defined(CONFIG_BFIN_CFPCMCIA_MODULE)
      &bfin_pcmcia_cf_device,
#endif

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

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

#if defined(CONFIG_USB_NET2272) || defined(CONFIG_USB_NET2272_MODULE)
      &net2272_bfin_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_BFIN_SIR) || defined(CONFIG_BFIN_SIR_MODULE)
#ifdef CONFIG_BFIN_SIR0
      &bfin_sir0_device,
#endif
#ifdef CONFIG_BFIN_SIR1
      &bfin_sir1_device,
#endif
#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

};

static int __init minotaur_init(void)
{
      printk(KERN_INFO "%s(): registering device resources\n", __func__);
      platform_add_devices(minotaur_devices, ARRAY_SIZE(minotaur_devices));
#if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
      spi_register_board_info(bfin_spi_board_info,
                        ARRAY_SIZE(bfin_spi_board_info));
#endif

      return 0;
}

arch_initcall(minotaur_init);

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

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