blackstamp.c

Go to the documentation of this file.

/*
 * Board Info File for the BlackStamp
 *
 * Copyright 2004-2008 Analog Devices Inc.
 *                2008 Benjamin Matthews <[email protected]>
 *                2005 National ICT Australia (NICTA)
 *                      Aidan Williams <[email protected]>
 *
 * More info about the BlackStamp at:
 *  http://blackfin.uclinux.org/gf/project/blackstamp/
 *
 * 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/mtd/physmap.h>
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
#include <linux/irq.h>
#include <linux/i2c.h>
#include <asm/dma.h>
#include <asm/bfin5xx_spi.h>
#include <asm/portmux.h>
#include <asm/dpmc.h>

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

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

/*
 *  Driver needs to know address, irq and flag pin.
 */
#if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
#include <linux/smc91x.h>

static struct smc91x_platdata smc91x_info = {
    .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
    .leda = RPC_LED_100_10,
    .ledb = RPC_LED_TX_RX,
};

static struct resource smc91x_resources[] = {
    {
        .name = "smc91x-regs",
        .start = 0x20300300,
        .end = 0x20300300 + 16,
        .flags = IORESOURCE_MEM,
    }, {
        .start = IRQ_PF3,
        .end = IRQ_PF3,
        .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
    },
};

static struct platform_device smc91x_device = {
    .name = "smc91x",
    .id = 0,
    .num_resources = ARRAY_SIZE(smc91x_resources),
    .resource = smc91x_resources,
    .dev    = {
        .platform_data  = &smc91x_info,
    },
};
#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 = 0x180000,
        .offset = MTDPART_OFS_APPEND,
    }, {
        .name = "file system(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 = "m25p64",
};

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

#if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
static struct bfin5xx_spi_chip mmc_spi_chip_info = {
    .enable_dma = 0,
};
#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 = 20000000,     /* max spi clock (SCK) speed in HZ */
        .bus_num = 0, /* Framework bus number */
        .chip_select = 2, /* Framework chip select. */
        .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 = 20000000,     /* max spi clock (SCK) speed in HZ */
        .bus_num = 0,
        .chip_select = 5,
        .controller_data = &mmc_spi_chip_info,
        .mode = SPI_MODE_3,
    },
#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 = 7,
    },
#endif
};

#if defined(CONFIG_SPI_BFIN5XX) || defined(CONFIG_SPI_BFIN5XX_MODULE)
/* 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,
    }
};

/* 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},
};

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)
#ifdef CONFIG_SERIAL_BFIN_UART0
static struct resource bfin_uart0_resources[] = {
    {
        .start = BFIN_UART_THR,
        .end = BFIN_UART_GCTL+2,
        .flags = IORESOURCE_MEM,
    },
    {
        .start = IRQ_UART0_TX,
        .end = IRQ_UART0_TX,
        .flags = IORESOURCE_IRQ,
    },
    {
        .start = IRQ_UART0_RX,
        .end = IRQ_UART0_RX,
        .flags = IORESOURCE_IRQ,
    },
    {
        .start = IRQ_UART0_ERROR,
        .end = IRQ_UART0_ERROR,
        .flags = IORESOURCE_IRQ,
    },
    {
        .start = CH_UART0_TX,
        .end = CH_UART0_TX,
        .flags = IORESOURCE_DMA,
    },
    {
        .start = CH_UART0_RX,
        .end = CH_UART0_RX,
        .flags = IORESOURCE_DMA,
    },
};

static unsigned short bfin_uart0_peripherals[] = {
    P_UART0_TX, P_UART0_RX, 0
};

static struct platform_device bfin_uart0_device = {
    .name = "bfin-uart",
    .id = 0,
    .num_resources = ARRAY_SIZE(bfin_uart0_resources),
    .resource = bfin_uart0_resources,
    .dev = {
        .platform_data = &bfin_uart0_peripherals, /* Passed to driver */
    },
};
#endif
#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
#endif

#if defined(CONFIG_SERIAL_BFIN_SPORT) || defined(CONFIG_SERIAL_BFIN_SPORT_MODULE)
#ifdef CONFIG_SERIAL_BFIN_SPORT0_UART
static struct resource bfin_sport0_uart_resources[] = {
    {
        .start = SPORT0_TCR1,
        .end = SPORT0_MRCS3+4,
        .flags = IORESOURCE_MEM,
    },
    {
        .start = IRQ_SPORT0_RX,
        .end = IRQ_SPORT0_RX+1,
        .flags = IORESOURCE_IRQ,
    },
    {
        .start = IRQ_SPORT0_ERROR,
        .end = IRQ_SPORT0_ERROR,
        .flags = IORESOURCE_IRQ,
    },
};

static unsigned short bfin_sport0_peripherals[] = {
    P_SPORT0_TFS, P_SPORT0_DTPRI, P_SPORT0_TSCLK, P_SPORT0_RFS,
    P_SPORT0_DRPRI, P_SPORT0_RSCLK, 0
};

static struct platform_device bfin_sport0_uart_device = {
    .name = "bfin-sport-uart",
    .id = 0,
    .num_resources = ARRAY_SIZE(bfin_sport0_uart_resources),
    .resource = bfin_sport0_uart_resources,
    .dev = {
        .platform_data = &bfin_sport0_peripherals, /* Passed to driver */
    },
};
#endif
#ifdef CONFIG_SERIAL_BFIN_SPORT1_UART
static struct resource bfin_sport1_uart_resources[] = {
    {
        .start = SPORT1_TCR1,
        .end = SPORT1_MRCS3+4,
        .flags = IORESOURCE_MEM,
    },
    {
        .start = IRQ_SPORT1_RX,
        .end = IRQ_SPORT1_RX+1,
        .flags = IORESOURCE_IRQ,
    },
    {
        .start = IRQ_SPORT1_ERROR,
        .end = IRQ_SPORT1_ERROR,
        .flags = IORESOURCE_IRQ,
    },
};

static unsigned short bfin_sport1_peripherals[] = {
    P_SPORT1_TFS, P_SPORT1_DTPRI, P_SPORT1_TSCLK, P_SPORT1_RFS,
    P_SPORT1_DRPRI, P_SPORT1_RSCLK, 0
};

static struct platform_device bfin_sport1_uart_device = {
    .name = "bfin-sport-uart",
    .id = 1,
    .num_resources = ARRAY_SIZE(bfin_sport1_uart_resources),
    .resource = bfin_sport1_uart_resources,
    .dev = {
        .platform_data = &bfin_sport1_peripherals, /* Passed to driver */
    },
};
#endif
#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_PF4, 0, "gpio-keys: BTN0"},
    {BTN_1, GPIO_PF5, 0, "gpio-keys: BTN1"},
    {BTN_2, GPIO_PF6, 0, "gpio-keys: BTN2"},
}; /* Mapped to the first three PF Test Points */

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

#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
#include <linux/i2c-gpio.h>

static struct i2c_gpio_platform_data i2c_gpio_data = {
    .sda_pin        = GPIO_PF8,
    .scl_pin        = GPIO_PF9,
    .sda_is_open_drain  = 0,
    .scl_is_open_drain  = 0,
    .udelay         = 40,
}; /* This hasn't actually been used these pins
    * are (currently) free pins on the expansion connector */

static struct platform_device i2c_gpio_device = {
    .name       = "i2c-gpio",
    .id     = 0,
    .dev        = {
        .platform_data  = &i2c_gpio_data,
    },
};
#endif

static struct i2c_board_info __initdata bfin_i2c_board_info[] = {
};

static const unsigned int cclk_vlev_datasheet[] =
{
    VRPAIR(VLEV_085, 250000000),
    VRPAIR(VLEV_090, 376000000),
    VRPAIR(VLEV_095, 426000000),
    VRPAIR(VLEV_100, 426000000),
    VRPAIR(VLEV_105, 476000000),
    VRPAIR(VLEV_110, 476000000),
    VRPAIR(VLEV_115, 476000000),
    VRPAIR(VLEV_120, 600000000),
    VRPAIR(VLEV_125, 600000000),
    VRPAIR(VLEV_130, 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,
    },
};

static struct platform_device *stamp_devices[] __initdata = {

    &bfin_dpmc,

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

#if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
    &smc91x_device,
#endif


#if defined(CONFIG_SPI_BFIN5XX) || defined(CONFIG_SPI_BFIN5XX_MODULE)
    &bfin_spi0_device,
#endif

#if defined(CONFIG_SERIAL_BFIN) || defined(CONFIG_SERIAL_BFIN_MODULE)
#ifdef CONFIG_SERIAL_BFIN_UART0
    &bfin_uart0_device,
#endif
#endif

#if defined(CONFIG_BFIN_SIR) || defined(CONFIG_BFIN_SIR_MODULE)
#ifdef CONFIG_BFIN_SIR0
    &bfin_sir0_device,
#endif
#endif

#if defined(CONFIG_SERIAL_BFIN_SPORT) || defined(CONFIG_SERIAL_BFIN_SPORT_MODULE)
#ifdef CONFIG_SERIAL_BFIN_SPORT0_UART
    &bfin_sport0_uart_device,
#endif
#ifdef CONFIG_SERIAL_BFIN_SPORT1_UART
    &bfin_sport1_uart_device,
#endif
#endif

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

#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
    &i2c_gpio_device,
#endif
};

static int __init blackstamp_init(void)
{
    int ret;

    printk(KERN_INFO "%s(): registering device resources\n", __func__);

    i2c_register_board_info(0, bfin_i2c_board_info,
                ARRAY_SIZE(bfin_i2c_board_info));

    ret = platform_add_devices(stamp_devices, ARRAY_SIZE(stamp_devices));
    if (ret < 0)
        return ret;

#if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
    /*
     * setup BF533_STAMP CPLD to route AMS3 to Ethernet MAC.
     * the bfin-async-map driver takes care of flipping between
     * flash and ethernet when necessary.
     */
    ret = gpio_request(GPIO_PF0, "enet_cpld");
    if (!ret) {
        gpio_direction_output(GPIO_PF0, 1);
        gpio_free(GPIO_PF0);
    }
#endif

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

arch_initcall(blackstamp_init);

static struct platform_device *stamp_early_devices[] __initdata = {
#if defined(CONFIG_SERIAL_BFIN_CONSOLE) || defined(CONFIG_EARLY_PRINTK)
#ifdef CONFIG_SERIAL_BFIN_UART0
    &bfin_uart0_device,
#endif
#endif

#if defined(CONFIG_SERIAL_BFIN_SPORT_CONSOLE)
#ifdef CONFIG_SERIAL_BFIN_SPORT0_UART
    &bfin_sport0_uart_device,
#endif
#ifdef CONFIG_SERIAL_BFIN_SPORT1_UART
    &bfin_sport1_uart_device,
#endif
#endif
};

void __init native_machine_early_platform_add_devices(void)
{
    printk(KERN_INFO "register early platform devices\n");
    early_platform_add_devices(stamp_early_devices,
        ARRAY_SIZE(stamp_early_devices));
}