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ezkit.c

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

#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/partitions.h>
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <asm/bfin5xx_spi.h>
#include <asm/dma.h>
#include <asm/gpio.h>
#include <asm/nand.h>
#include <asm/portmux.h>
#include <asm/dpmc.h>
#include <linux/input.h>

/*
 * Name the Board for the /proc/cpuinfo
 */
const char bfin_board_name[] = "ADI BF538-EZKIT";

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


#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_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
#ifdef CONFIG_SERIAL_BFIN_UART2
      {
            .start = 0xFFC02100,
            .end = 0xFFC021FF,
            .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)
#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
#ifdef CONFIG_BFIN_SIR2
static struct resource bfin_sir2_resources[] = {
      {
            .start = 0xFFC02100,
            .end = 0xFFC021FF,
            .flags = IORESOURCE_MEM,
      },
      {
            .start = IRQ_UART2_RX,
            .end = IRQ_UART2_RX+1,
            .flags = IORESOURCE_IRQ,
      },
      {
            .start = CH_UART2_RX,
            .end = CH_UART2_RX+1,
            .flags = IORESOURCE_DMA,
      },
};
static struct platform_device bfin_sir2_device = {
      .name = "bfin_sir",
      .id = 2,
      .num_resources = ARRAY_SIZE(bfin_sir2_resources),
      .resource = bfin_sir2_resources,
};
#endif
#endif

/*
 *  USB-LAN EzExtender board
 *  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 = 0x20310300,
            .end = 0x20310300 + 16,
            .flags = IORESOURCE_MEM,
      }, {
            .start = IRQ_PF0,
            .end = IRQ_PF0,
            .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_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
/* all SPI peripherals info goes here */
#if defined(CONFIG_MTD_M25P80) \
      || defined(CONFIG_MTD_M25P80_MODULE)
/* SPI flash chip (m25p16) */
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 = 0x1c0000,
            .offset = 0x40000
      }
};

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",
};

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_TOUCHSCREEN_AD7879) || defined(CONFIG_TOUCHSCREEN_AD7879_MODULE)
#include <linux/spi/ad7879.h>
static const struct ad7879_platform_data bfin_ad7879_ts_info = {
      .model                  = 7879,     /* Model = AD7879 */
      .x_plate_ohms           = 620,      /* 620 Ohm from the touch datasheet */
      .pressure_max           = 10000,
      .pressure_min           = 0,
      .first_conversion_delay = 3,  /* wait 512us before do a first conversion */
      .acquisition_time       = 1,  /* 4us acquisition time per sample */
      .median                 = 2,  /* do 8 measurements */
      .averaging        = 1,  /* take the average of 4 middle samples */
      .pen_down_acc_interval  = 255,      /* 9.4 ms */
      .gpio_output            = 1,  /* configure AUX/VBAT/GPIO as GPIO output */
      .gpio_default           = 1,  /* During initialization set GPIO = HIGH */
};
#endif

#if defined(CONFIG_TOUCHSCREEN_AD7879_SPI) || defined(CONFIG_TOUCHSCREEN_AD7879_SPI_MODULE)
static struct bfin5xx_spi_chip spi_ad7879_chip_info = {
      .enable_dma = 0,
      .bits_per_word = 16,
};
#endif

#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 =   0,    /* let something else control the LCD Blacklight */
      .gpio_bl =  GPIO_PF7,
};

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

#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 bf538_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, /* SPI_SSEL1*/
            .platform_data = &bfin_spi_flash_data,
            .controller_data = &spi_flash_chip_info,
            .mode = SPI_MODE_3,
      },
#endif
#if defined(CONFIG_TOUCHSCREEN_AD7879_SPI) || defined(CONFIG_TOUCHSCREEN_AD7879_SPI_MODULE)
      {
            .modalias = "ad7879",
            .platform_data = &bfin_ad7879_ts_info,
            .irq = IRQ_PF3,
            .max_speed_hz = 5000000,     /* max spi clock (SCK) speed in HZ */
            .bus_num = 0,
            .chip_select = 1,
            .controller_data = &spi_ad7879_chip_info,
            .mode = SPI_CPHA | SPI_CPOL,
      },
#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 = 2,
            .controller_data = &lq035q1_spi_chip_info,
            .mode = SPI_CPHA | SPI_CPOL,
      },
#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
};

/* SPI (0) */
static struct resource bfin_spi0_resource[] = {
      [0] = {
            .start = SPI0_REGBASE,
            .end   = SPI0_REGBASE + 0xFF,
            .flags = IORESOURCE_MEM,
      },
      [1] = {
            .start = CH_SPI0,
            .end   = CH_SPI0,
            .flags = IORESOURCE_DMA,
      },
      [2] = {
            .start = IRQ_SPI0,
            .end   = IRQ_SPI0,
            .flags = IORESOURCE_IRQ,
      }
};

/* SPI (1) */
static struct resource bfin_spi1_resource[] = {
      [0] = {
            .start = SPI1_REGBASE,
            .end   = SPI1_REGBASE + 0xFF,
            .flags = IORESOURCE_MEM,
      },
      [1] = {
            .start = CH_SPI1,
            .end   = CH_SPI1,
            .flags = IORESOURCE_DMA,
      },
      [2] = {
            .start = IRQ_SPI1,
            .end   = IRQ_SPI1,
            .flags = IORESOURCE_IRQ,
      }
};

/* SPI (2) */
static struct resource bfin_spi2_resource[] = {
      [0] = {
            .start = SPI2_REGBASE,
            .end   = SPI2_REGBASE + 0xFF,
            .flags = IORESOURCE_MEM,
      },
      [1] = {
            .start = CH_SPI2,
            .end   = CH_SPI2,
            .flags = IORESOURCE_DMA,
      },
      [2] = {
            .start = IRQ_SPI2,
            .end   = IRQ_SPI2,
            .flags = IORESOURCE_IRQ,
      }
};

/* SPI controller data */
static struct bfin5xx_spi_master bf538_spi_master_info0 = {
      .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 bf538_spi_master0 = {
      .name = "bfin-spi",
      .id = 0, /* Bus number */
      .num_resources = ARRAY_SIZE(bfin_spi0_resource),
      .resource = bfin_spi0_resource,
      .dev = {
            .platform_data = &bf538_spi_master_info0, /* Passed to driver */
            },
};

static struct bfin5xx_spi_master bf538_spi_master_info1 = {
      .num_chipselect = 8,
      .enable_dma = 1,  /* master has the ability to do dma transfer */
      .pin_req = {P_SPI1_SCK, P_SPI1_MISO, P_SPI1_MOSI, 0},
};

static struct platform_device bf538_spi_master1 = {
      .name = "bfin-spi",
      .id = 1, /* Bus number */
      .num_resources = ARRAY_SIZE(bfin_spi1_resource),
      .resource = bfin_spi1_resource,
      .dev = {
            .platform_data = &bf538_spi_master_info1, /* Passed to driver */
            },
};

static struct bfin5xx_spi_master bf538_spi_master_info2 = {
      .num_chipselect = 8,
      .enable_dma = 1,  /* master has the ability to do dma transfer */
      .pin_req = {P_SPI2_SCK, P_SPI2_MISO, P_SPI2_MOSI, 0},
};

static struct platform_device bf538_spi_master2 = {
      .name = "bfin-spi",
      .id = 2, /* Bus number */
      .num_resources = ARRAY_SIZE(bfin_spi2_resource),
      .resource = bfin_spi2_resource,
      .dev = {
            .platform_data = &bf538_spi_master_info2, /* Passed to driver */
            },
};

#endif  /* spi master and devices */

#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_TWI0,
            .end   = IRQ_TWI0,
            .flags = IORESOURCE_IRQ,
      },
};

static struct platform_device i2c_bfin_twi0_device = {
      .name = "i2c-bfin-twi",
      .id = 0,
      .num_resources = ARRAY_SIZE(bfin_twi0_resource),
      .resource = bfin_twi0_resource,
};

#if !defined(CONFIG_BF542)    /* The BF542 only has 1 TWI */
static struct resource bfin_twi1_resource[] = {
      [0] = {
            .start = TWI1_REGBASE,
            .end   = TWI1_REGBASE + 0xFF,
            .flags = IORESOURCE_MEM,
      },
      [1] = {
            .start = IRQ_TWI1,
            .end   = IRQ_TWI1,
            .flags = IORESOURCE_IRQ,
      },
};

static struct platform_device i2c_bfin_twi1_device = {
      .name = "i2c-bfin-twi",
      .id = 1,
      .num_resources = ARRAY_SIZE(bfin_twi1_resource),
      .resource = bfin_twi1_resource,
};
#endif
#endif

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

static struct gpio_keys_button bfin_gpio_keys_table[] = {
      {BTN_0, GPIO_PC7, 1, "gpio-keys: BTN0"},
};

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 const unsigned int cclk_vlev_datasheet[] =
{
/*
 * Internal VLEV BF538SBBC1533
 ****temporarily using these values until data sheet is updated
 */
      VRPAIR(VLEV_100, 150000000),
      VRPAIR(VLEV_100, 250000000),
      VRPAIR(VLEV_110, 276000000),
      VRPAIR(VLEV_115, 301000000),
      VRPAIR(VLEV_120, 525000000),
      VRPAIR(VLEV_125, 550000000),
      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,
      },
};

#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
static struct mtd_partition ezkit_partitions[] = {
      {
            .name       = "bootloader(nor)",
            .size       = 0x40000,
            .offset     = 0,
      }, {
            .name       = "linux kernel(nor)",
            .size       = 0x180000,
            .offset     = MTDPART_OFS_APPEND,
      }, {
            .name       = "file system(nor)",
            .size       = MTDPART_SIZ_FULL,
            .offset     = MTDPART_OFS_APPEND,
      }
};

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

static struct resource ezkit_flash_resource = {
      .start = 0x20000000,
#if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
      .end   = 0x202fffff,
#else
      .end   = 0x203fffff,
#endif
      .flags = IORESOURCE_MEM,
};

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

static struct platform_device *cm_bf538_devices[] __initdata = {

      &bfin_dpmc,

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

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

#if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
      &bf538_spi_master0,
      &bf538_spi_master1,
      &bf538_spi_master2,
#endif

#if defined(CONFIG_I2C_BLACKFIN_TWI) || defined(CONFIG_I2C_BLACKFIN_TWI_MODULE)
      &i2c_bfin_twi0_device,
      &i2c_bfin_twi1_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
#ifdef CONFIG_BFIN_SIR2
      &bfin_sir2_device,
#endif
#endif

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

#if defined(CONFIG_FB_BFIN_LQ035Q1) || defined(CONFIG_FB_BFIN_LQ035Q1_MODULE)
      &bfin_lq035q1_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)
      &ezkit_flash_device,
#endif
};

static int __init ezkit_init(void)
{
      printk(KERN_INFO "%s(): registering device resources\n", __func__);
      platform_add_devices(cm_bf538_devices, ARRAY_SIZE(cm_bf538_devices));

#if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
      spi_register_board_info(bf538_spi_board_info,
                  ARRAY_SIZE(bf538_spi_board_info));
#endif

      return 0;
}

arch_initcall(ezkit_init);

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