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board-da850-evm.c

/*
 * TI DA850/OMAP-L138 EVM board
 *
 * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
 *
 * Derived from: arch/arm/mach-davinci/board-da830-evm.c
 * Original Copyrights follow:
 *
 * 2007, 2009 (c) MontaVista Software, Inc. This file is licensed under
 * the terms of the GNU General Public License version 2. This program
 * is licensed "as is" without any warranty of any kind, whether express
 * or implied.
 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/console.h>
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>

#include <mach/common.h>
#include <mach/irqs.h>
#include <mach/cp_intc.h>
#include <mach/da8xx.h>
#include <mach/nand.h>

#define DA850_EVM_PHY_MASK          0x1
#define DA850_EVM_MDIO_FREQUENCY    2200000 /* PHY bus frequency */

#define DA850_LCD_BL_PIN            GPIO_TO_PIN(2, 15)
#define DA850_LCD_PWR_PIN           GPIO_TO_PIN(8, 10)

#define DA850_MMCSD_CD_PIN          GPIO_TO_PIN(4, 0)
#define DA850_MMCSD_WP_PIN          GPIO_TO_PIN(4, 1)

static struct mtd_partition da850_evm_norflash_partition[] = {
      {
            .name           = "NOR filesystem",
            .offset         = 0,
            .size           = MTDPART_SIZ_FULL,
            .mask_flags     = 0,
      },
};

static struct physmap_flash_data da850_evm_norflash_data = {
      .width            = 2,
      .parts            = da850_evm_norflash_partition,
      .nr_parts   = ARRAY_SIZE(da850_evm_norflash_partition),
};

static struct resource da850_evm_norflash_resource[] = {
      {
            .start      = DA8XX_AEMIF_CS2_BASE,
            .end  = DA8XX_AEMIF_CS2_BASE + SZ_32M - 1,
            .flags      = IORESOURCE_MEM,
      },
};

static struct platform_device da850_evm_norflash_device = {
      .name       = "physmap-flash",
      .id         = 0,
      .dev        = {
            .platform_data  = &da850_evm_norflash_data,
      },
      .num_resources    = 1,
      .resource   = da850_evm_norflash_resource,
};

/* DA850/OMAP-L138 EVM includes a 512 MByte large-page NAND flash
 * (128K blocks). It may be used instead of the (default) SPI flash
 * to boot, using TI's tools to install the secondary boot loader
 * (UBL) and U-Boot.
 */
struct mtd_partition da850_evm_nandflash_partition[] = {
      {
            .name       = "u-boot env",
            .offset           = 0,
            .size       = SZ_128K,
            .mask_flags = MTD_WRITEABLE,
       },
      {
            .name       = "UBL",
            .offset           = MTDPART_OFS_APPEND,
            .size       = SZ_128K,
            .mask_flags = MTD_WRITEABLE,
      },
      {
            .name       = "u-boot",
            .offset           = MTDPART_OFS_APPEND,
            .size       = 4 * SZ_128K,
            .mask_flags = MTD_WRITEABLE,
      },
      {
            .name       = "kernel",
            .offset           = 0x200000,
            .size       = SZ_2M,
            .mask_flags = 0,
      },
      {
            .name       = "filesystem",
            .offset           = MTDPART_OFS_APPEND,
            .size       = MTDPART_SIZ_FULL,
            .mask_flags = 0,
      },
};

static struct davinci_nand_pdata da850_evm_nandflash_data = {
      .parts            = da850_evm_nandflash_partition,
      .nr_parts   = ARRAY_SIZE(da850_evm_nandflash_partition),
      .ecc_mode   = NAND_ECC_HW,
      .options    = NAND_USE_FLASH_BBT,
};

static struct resource da850_evm_nandflash_resource[] = {
      {
            .start      = DA8XX_AEMIF_CS3_BASE,
            .end  = DA8XX_AEMIF_CS3_BASE + SZ_512K + 2 * SZ_1K - 1,
            .flags      = IORESOURCE_MEM,
      },
      {
            .start      = DA8XX_AEMIF_CTL_BASE,
            .end  = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,
            .flags      = IORESOURCE_MEM,
      },
};

static struct platform_device da850_evm_nandflash_device = {
      .name       = "davinci_nand",
      .id         = 1,
      .dev        = {
            .platform_data    = &da850_evm_nandflash_data,
      },
      .num_resources    = ARRAY_SIZE(da850_evm_nandflash_resource),
      .resource   = da850_evm_nandflash_resource,
};

static struct i2c_board_info __initdata da850_evm_i2c_devices[] = {
      {
            I2C_BOARD_INFO("tlv320aic3x", 0x18),
      }
};

static struct davinci_i2c_platform_data da850_evm_i2c_0_pdata = {
      .bus_freq   = 100,      /* kHz */
      .bus_delay  = 0,  /* usec */
};

static struct davinci_uart_config da850_evm_uart_config __initdata = {
      .enabled_uarts = 0x7,
};

static struct platform_device *da850_evm_devices[] __initdata = {
      &da850_evm_nandflash_device,
      &da850_evm_norflash_device,
};

/* davinci da850 evm audio machine driver */
static u8 da850_iis_serializer_direction[] = {
      INACTIVE_MODE,    INACTIVE_MODE,    INACTIVE_MODE,    INACTIVE_MODE,
      INACTIVE_MODE,    INACTIVE_MODE,    INACTIVE_MODE,    INACTIVE_MODE,
      INACTIVE_MODE,    INACTIVE_MODE,    INACTIVE_MODE,    TX_MODE,
      RX_MODE,    INACTIVE_MODE,    INACTIVE_MODE,    INACTIVE_MODE,
};

static struct snd_platform_data da850_evm_snd_data = {
      .tx_dma_offset    = 0x2000,
      .rx_dma_offset    = 0x2000,
      .op_mode    = DAVINCI_MCASP_IIS_MODE,
      .num_serializer   = ARRAY_SIZE(da850_iis_serializer_direction),
      .tdm_slots  = 2,
      .serial_dir = da850_iis_serializer_direction,
      .eventq_no  = EVENTQ_1,
      .version    = MCASP_VERSION_2,
      .txnumevt   = 1,
      .rxnumevt   = 1,
};

static int da850_evm_mmc_get_ro(int index)
{
      return gpio_get_value(DA850_MMCSD_WP_PIN);
}

static int da850_evm_mmc_get_cd(int index)
{
      return !gpio_get_value(DA850_MMCSD_CD_PIN);
}

static struct davinci_mmc_config da850_mmc_config = {
      .get_ro           = da850_evm_mmc_get_ro,
      .get_cd           = da850_evm_mmc_get_cd,
      .wires            = 4,
      .version    = MMC_CTLR_VERSION_2,
};

static int da850_lcd_hw_init(void)
{
      int status;

      status = gpio_request(DA850_LCD_BL_PIN, "lcd bl\n");
      if (status < 0)
            return status;

      status = gpio_request(DA850_LCD_PWR_PIN, "lcd pwr\n");
      if (status < 0) {
            gpio_free(DA850_LCD_BL_PIN);
            return status;
      }

      gpio_direction_output(DA850_LCD_BL_PIN, 0);
      gpio_direction_output(DA850_LCD_PWR_PIN, 0);

      /* disable lcd backlight */
      gpio_set_value(DA850_LCD_BL_PIN, 0);

      /* disable lcd power */
      gpio_set_value(DA850_LCD_PWR_PIN, 0);

      /* enable lcd power */
      gpio_set_value(DA850_LCD_PWR_PIN, 1);

      /* enable lcd backlight */
      gpio_set_value(DA850_LCD_BL_PIN, 1);

      return 0;
}

#define DA8XX_AEMIF_CE2CFG_OFFSET   0x10
#define DA8XX_AEMIF_ASIZE_16BIT           0x1

static void __init da850_evm_init_nor(void)
{
      void __iomem *aemif_addr;

      aemif_addr = ioremap(DA8XX_AEMIF_CTL_BASE, SZ_32K);

      /* Configure data bus width of CS2 to 16 bit */
      writel(readl(aemif_addr + DA8XX_AEMIF_CE2CFG_OFFSET) |
            DA8XX_AEMIF_ASIZE_16BIT,
            aemif_addr + DA8XX_AEMIF_CE2CFG_OFFSET);

      iounmap(aemif_addr);
}

#if defined(CONFIG_MTD_PHYSMAP) || \
    defined(CONFIG_MTD_PHYSMAP_MODULE)
#define HAS_NOR 1
#else
#define HAS_NOR 0
#endif

#if defined(CONFIG_MMC_DAVINCI) || \
    defined(CONFIG_MMC_DAVINCI_MODULE)
#define HAS_MMC 1
#else
#define HAS_MMC 0
#endif

static __init void da850_evm_init(void)
{
      struct davinci_soc_info *soc_info = &davinci_soc_info;
      int ret;

      ret = da8xx_pinmux_setup(da850_nand_pins);
      if (ret)
            pr_warning("da850_evm_init: nand mux setup failed: %d\n",
                        ret);

      ret = da8xx_pinmux_setup(da850_nor_pins);
      if (ret)
            pr_warning("da850_evm_init: nor mux setup failed: %d\n",
                        ret);

      da850_evm_init_nor();

      platform_add_devices(da850_evm_devices,
                        ARRAY_SIZE(da850_evm_devices));

      ret = da8xx_register_edma();
      if (ret)
            pr_warning("da850_evm_init: edma registration failed: %d\n",
                        ret);

      ret = da8xx_pinmux_setup(da850_i2c0_pins);
      if (ret)
            pr_warning("da850_evm_init: i2c0 mux setup failed: %d\n",
                        ret);

      ret = da8xx_register_i2c(0, &da850_evm_i2c_0_pdata);
      if (ret)
            pr_warning("da850_evm_init: i2c0 registration failed: %d\n",
                        ret);

      soc_info->emac_pdata->phy_mask = DA850_EVM_PHY_MASK;
      soc_info->emac_pdata->mdio_max_freq = DA850_EVM_MDIO_FREQUENCY;
      soc_info->emac_pdata->rmii_en = 0;

      ret = da8xx_pinmux_setup(da850_cpgmac_pins);
      if (ret)
            pr_warning("da850_evm_init: cpgmac mux setup failed: %d\n",
                        ret);

      ret = da8xx_register_emac();
      if (ret)
            pr_warning("da850_evm_init: emac registration failed: %d\n",
                        ret);

      ret = da8xx_register_watchdog();
      if (ret)
            pr_warning("da830_evm_init: watchdog registration failed: %d\n",
                        ret);

      if (HAS_MMC) {
            if (HAS_NOR)
                  pr_warning("WARNING: both NOR Flash and MMC/SD are "
                        "enabled, but they share AEMIF pins.\n"
                        "\tDisable one of them.\n");

            ret = da8xx_pinmux_setup(da850_mmcsd0_pins);
            if (ret)
                  pr_warning("da850_evm_init: mmcsd0 mux setup failed:"
                              " %d\n", ret);

            ret = gpio_request(DA850_MMCSD_CD_PIN, "MMC CD\n");
            if (ret)
                  pr_warning("da850_evm_init: can not open GPIO %d\n",
                              DA850_MMCSD_CD_PIN);
            gpio_direction_input(DA850_MMCSD_CD_PIN);

            ret = gpio_request(DA850_MMCSD_WP_PIN, "MMC WP\n");
            if (ret)
                  pr_warning("da850_evm_init: can not open GPIO %d\n",
                              DA850_MMCSD_WP_PIN);
            gpio_direction_input(DA850_MMCSD_WP_PIN);

            ret = da8xx_register_mmcsd0(&da850_mmc_config);
            if (ret)
                  pr_warning("da850_evm_init: mmcsd0 registration failed:"
                              " %d\n", ret);
      }

      davinci_serial_init(&da850_evm_uart_config);

      i2c_register_board_info(1, da850_evm_i2c_devices,
                  ARRAY_SIZE(da850_evm_i2c_devices));

      /*
       * shut down uart 0 and 1; they are not used on the board and
       * accessing them causes endless "too much work in irq53" messages
       * with arago fs
       */
      __raw_writel(0, IO_ADDRESS(DA8XX_UART1_BASE) + 0x30);
      __raw_writel(0, IO_ADDRESS(DA8XX_UART0_BASE) + 0x30);

      ret = da8xx_pinmux_setup(da850_mcasp_pins);
      if (ret)
            pr_warning("da850_evm_init: mcasp mux setup failed: %d\n",
                        ret);

      da8xx_init_mcasp(0, &da850_evm_snd_data);

      ret = da8xx_pinmux_setup(da850_lcdcntl_pins);
      if (ret)
            pr_warning("da850_evm_init: lcdcntl mux setup failed: %d\n",
                        ret);

      ret = da850_lcd_hw_init();
      if (ret)
            pr_warning("da850_evm_init: lcd initialization failed: %d\n",
                        ret);

      ret = da8xx_register_lcdc();
      if (ret)
            pr_warning("da850_evm_init: lcdc registration failed: %d\n",
                        ret);
}

#ifdef CONFIG_SERIAL_8250_CONSOLE
static int __init da850_evm_console_init(void)
{
      return add_preferred_console("ttyS", 2, "115200");
}
console_initcall(da850_evm_console_init);
#endif

static __init void da850_evm_irq_init(void)
{
      struct davinci_soc_info *soc_info = &davinci_soc_info;

      cp_intc_init((void __iomem *)DA8XX_CP_INTC_VIRT, DA850_N_CP_INTC_IRQ,
                  soc_info->intc_irq_prios);
}

static void __init da850_evm_map_io(void)
{
      da850_init();
}

MACHINE_START(DAVINCI_DA850_EVM, "DaVinci DA850/OMAP-L138 EVM")
      .phys_io    = IO_PHYS,
      .io_pg_offst      = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
      .boot_params      = (DA8XX_DDR_BASE + 0x100),
      .map_io           = da850_evm_map_io,
      .init_irq   = da850_evm_irq_init,
      .timer            = &davinci_timer,
      .init_machine     = da850_evm_init,
MACHINE_END

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