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board-ap4evb.c

/*
 * AP4EVB board support
 *
 * Copyright (C) 2010  Magnus Damm
 * Copyright (C) 2008  Yoshihiro Shimoda
 *
 * 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; version 2 of the License.
 *
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#include <linux/clk.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/mfd/sh_mobile_sdhi.h>
#include <linux/mfd/tmio.h>
#include <linux/mmc/host.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/mmc/sh_mmcif.h>
#include <linux/i2c.h>
#include <linux/i2c/tsc2007.h>
#include <linux/io.h>
#include <linux/smsc911x.h>
#include <linux/sh_intc.h>
#include <linux/sh_clk.h>
#include <linux/gpio.h>
#include <linux/input.h>
#include <linux/leds.h>
#include <linux/input/sh_keysc.h>
#include <linux/usb/r8a66597.h>

#include <media/sh_mobile_ceu.h>
#include <media/sh_mobile_csi2.h>
#include <media/soc_camera.h>

#include <sound/sh_fsi.h>

#include <video/sh_mobile_hdmi.h>
#include <video/sh_mobile_lcdc.h>
#include <video/sh_mipi_dsi.h>

#include <mach/common.h>
#include <mach/irqs.h>
#include <mach/sh7372.h>

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

/*
 * Address  Interface         BusWidth    note
 * ------------------------------------------------------------------
 * 0x0000_0000    NOR Flash ROM (MCP)     16bit       SW7 : bit1 = ON
 * 0x0800_0000    user area         -
 * 0x1000_0000    NOR Flash ROM (MCP)     16bit       SW7 : bit1 = OFF
 * 0x1400_0000    Ether (LAN9220)         16bit
 * 0x1600_0000    user area         -           cannot use with NAND
 * 0x1800_0000    user area         -
 * 0x1A00_0000    -
 * 0x4000_0000    LPDDR2-SDRAM (POP)      32bit
 */

/*
 * NOR Flash ROM
 *
 *  SW1  |     SW2    | SW7  | NOR Flash ROM
 *  bit1 | bit1  bit2 | bit1 | Memory allocation
 * ------+------------+------+------------------
 *  OFF  | ON     OFF | ON   |    Area 0
 *  OFF  | ON     OFF | OFF  |    Area 4
 */

/*
 * NAND Flash ROM
 *
 *  SW1  |     SW2    | SW7  | NAND Flash ROM
 *  bit1 | bit1  bit2 | bit2 | Memory allocation
 * ------+------------+------+------------------
 *  OFF  | ON     OFF | ON   |    FCE 0
 *  OFF  | ON     OFF | OFF  |    FCE 1
 */

/*
 * SMSC 9220
 *
 *  SW1           SMSC 9220
 * -----------------------
 *  ON            access disable
 *  OFF           access enable
 */

/*
 * LCD / IRQ / KEYSC / IrDA
 *
 * IRQ = IRQ26 (TS), IRQ27 (VIO), IRQ28 (QHD-TouchScreen)
 * LCD = 2nd LCDC (WVGA)
 *
 *          |           SW43              |
 * SW3            |     ON          |     OFF   |
 * -------------+-----------------------+---------------+
 * ON       | KEY / IrDA            | LCD       |
 * OFF            | KEY / IrDA / IRQ      | IRQ       |
 *
 *
 * QHD / WVGA display
 *
 * You can choice display type on menuconfig.
 * Then, check above dip-switch.
 */

/*
 * USB
 *
 * J7 : 1-2  MAX3355E VBUS
 *      2-3  DC 5.0V
 *
 * S39: bit2: off
 */

/*
 * FSI/FSMI
 *
 * SW41     :  ON : SH-Mobile AP4 Audio Mode
 *    : OFF : Bluetooth Audio Mode
 */

/*
 * MMC0/SDHI1 (CN7)
 *
 * J22 : select card voltage
 *       1-2 pin : 1.8v
 *       2-3 pin : 3.3v
 *
 *        SW1  |             SW33
 *             | bit1 | bit2 | bit3 | bit4
 * ------------+------+------+------+-------
 * MMC0   OFF  |  OFF |  ON  |  ON  |  X
 * SDHI1  OFF  |  ON  |   X  |  OFF | ON
 *
 * voltage lebel
 * CN7 : 1.8v
 * CN12: 3.3v
 */

/* MTD */
static struct mtd_partition nor_flash_partitions[] = {
      {
            .name       = "loader",
            .offset           = 0x00000000,
            .size       = 512 * 1024,
            .mask_flags = MTD_WRITEABLE,
      },
      {
            .name       = "bootenv",
            .offset           = MTDPART_OFS_APPEND,
            .size       = 512 * 1024,
            .mask_flags = MTD_WRITEABLE,
      },
      {
            .name       = "kernel_ro",
            .offset           = MTDPART_OFS_APPEND,
            .size       = 8 * 1024 * 1024,
            .mask_flags = MTD_WRITEABLE,
      },
      {
            .name       = "kernel",
            .offset           = MTDPART_OFS_APPEND,
            .size       = 8 * 1024 * 1024,
      },
      {
            .name       = "data",
            .offset           = MTDPART_OFS_APPEND,
            .size       = MTDPART_SIZ_FULL,
      },
};

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

static struct resource nor_flash_resources[] = {
      [0]   = {
            .start      = 0x00000000,
            .end  = 0x08000000 - 1,
            .flags      = IORESOURCE_MEM,
      }
};

static struct platform_device nor_flash_device = {
      .name       = "physmap-flash",
      .dev        = {
            .platform_data    = &nor_flash_data,
      },
      .num_resources    = ARRAY_SIZE(nor_flash_resources),
      .resource   = nor_flash_resources,
};

/* SMSC 9220 */
static struct resource smc911x_resources[] = {
      {
            .start      = 0x14000000,
            .end  = 0x16000000 - 1,
            .flags      = IORESOURCE_MEM,
      }, {
            .start      = evt2irq(0x02c0) /* IRQ6A */,
            .flags      = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
      },
};

static struct smsc911x_platform_config smsc911x_info = {
      .flags            = SMSC911X_USE_16BIT | SMSC911X_SAVE_MAC_ADDRESS,
      .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
      .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
};

static struct platform_device smc911x_device = {
      .name           = "smsc911x",
      .id             = -1,
      .num_resources  = ARRAY_SIZE(smc911x_resources),
      .resource       = smc911x_resources,
      .dev            = {
            .platform_data = &smsc911x_info,
      },
};

/*
 * The card detect pin of the top SD/MMC slot (CN7) is active low and is
 * connected to GPIO A22 of SH7372 (GPIO_PORT41).
 */
static int slot_cn7_get_cd(struct platform_device *pdev)
{
      return !gpio_get_value(GPIO_PORT41);
}

/* SH_MMCIF */
static struct resource sh_mmcif_resources[] = {
      [0] = {
            .name = "MMCIF",
            .start      = 0xE6BD0000,
            .end  = 0xE6BD00FF,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            /* MMC ERR */
            .start      = evt2irq(0x1ac0),
            .flags      = IORESOURCE_IRQ,
      },
      [2] = {
            /* MMC NOR */
            .start      = evt2irq(0x1ae0),
            .flags      = IORESOURCE_IRQ,
      },
};

static struct sh_mmcif_dma sh_mmcif_dma = {
      .chan_priv_rx     = {
            .slave_id   = SHDMA_SLAVE_MMCIF_RX,
      },
      .chan_priv_tx     = {
            .slave_id   = SHDMA_SLAVE_MMCIF_TX,
      },
};

static struct sh_mmcif_plat_data sh_mmcif_plat = {
      .sup_pclk   = 0,
      .ocr        = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34,
      .caps       = MMC_CAP_4_BIT_DATA |
                    MMC_CAP_8_BIT_DATA |
                    MMC_CAP_NEEDS_POLL,
      .get_cd           = slot_cn7_get_cd,
      .dma        = &sh_mmcif_dma,
};

static struct platform_device sh_mmcif_device = {
      .name       = "sh_mmcif",
      .id         = 0,
      .dev        = {
            .dma_mask         = NULL,
            .coherent_dma_mask      = 0xffffffff,
            .platform_data          = &sh_mmcif_plat,
      },
      .num_resources    = ARRAY_SIZE(sh_mmcif_resources),
      .resource   = sh_mmcif_resources,
};

/* SDHI0 */
static struct sh_mobile_sdhi_info sdhi0_info = {
      .dma_slave_tx     = SHDMA_SLAVE_SDHI0_TX,
      .dma_slave_rx     = SHDMA_SLAVE_SDHI0_RX,
      .tmio_caps  = MMC_CAP_SDIO_IRQ,
};

static struct resource sdhi0_resources[] = {
      [0] = {
            .name = "SDHI0",
            .start  = 0xe6850000,
            .end    = 0xe68501ff,
            .flags  = IORESOURCE_MEM,
      },
      [1] = {
            .start  = evt2irq(0x0e00) /* SDHI0 */,
            .flags  = IORESOURCE_IRQ,
      },
};

static struct platform_device sdhi0_device = {
      .name           = "sh_mobile_sdhi",
      .num_resources  = ARRAY_SIZE(sdhi0_resources),
      .resource       = sdhi0_resources,
      .id             = 0,
      .dev  = {
            .platform_data    = &sdhi0_info,
      },
};

/* SDHI1 */
static struct sh_mobile_sdhi_info sdhi1_info = {
      .dma_slave_tx     = SHDMA_SLAVE_SDHI1_TX,
      .dma_slave_rx     = SHDMA_SLAVE_SDHI1_RX,
      .tmio_ocr_mask    = MMC_VDD_165_195,
      .tmio_flags = TMIO_MMC_WRPROTECT_DISABLE,
      .tmio_caps  = MMC_CAP_NEEDS_POLL | MMC_CAP_SDIO_IRQ,
      .get_cd           = slot_cn7_get_cd,
};

static struct resource sdhi1_resources[] = {
      [0] = {
            .name = "SDHI1",
            .start  = 0xe6860000,
            .end    = 0xe68601ff,
            .flags  = IORESOURCE_MEM,
      },
      [1] = {
            .start  = evt2irq(0x0e80),
            .flags  = IORESOURCE_IRQ,
      },
};

static struct platform_device sdhi1_device = {
      .name           = "sh_mobile_sdhi",
      .num_resources  = ARRAY_SIZE(sdhi1_resources),
      .resource       = sdhi1_resources,
      .id             = 1,
      .dev  = {
            .platform_data    = &sdhi1_info,
      },
};

/* USB1 */
static void usb1_host_port_power(int port, int power)
{
      if (!power) /* only power-on supported for now */
            return;

      /* set VBOUT/PWEN and EXTLP1 in DVSTCTR */
      __raw_writew(__raw_readw(0xE68B0008) | 0x600, 0xE68B0008);
}

static struct r8a66597_platdata usb1_host_data = {
      .on_chip    = 1,
      .port_power = usb1_host_port_power,
};

static struct resource usb1_host_resources[] = {
      [0] = {
            .name = "USBHS",
            .start      = 0xE68B0000,
            .end  = 0xE68B00E6 - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = evt2irq(0x1ce0) /* USB1_USB1I0 */,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device usb1_host_device = {
      .name = "r8a66597_hcd",
      .id   = 1,
      .dev = {
            .dma_mask         = NULL,         /*  not use dma */
            .coherent_dma_mask      = 0xffffffff,
            .platform_data          = &usb1_host_data,
      },
      .num_resources    = ARRAY_SIZE(usb1_host_resources),
      .resource   = usb1_host_resources,
};

const static struct fb_videomode ap4evb_lcdc_modes[] = {
      {
#ifdef CONFIG_AP4EVB_QHD
            .name       = "R63302(QHD)",
            .xres       = 544,
            .yres       = 961,
            .left_margin      = 72,
            .right_margin     = 600,
            .hsync_len  = 16,
            .upper_margin     = 8,
            .lower_margin     = 8,
            .vsync_len  = 2,
            .sync       = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT,
#else
            .name       = "WVGA Panel",
            .xres       = 800,
            .yres       = 480,
            .left_margin      = 220,
            .right_margin     = 110,
            .hsync_len  = 70,
            .upper_margin     = 20,
            .lower_margin     = 5,
            .vsync_len  = 5,
            .sync       = 0,
#endif
      },
};

static struct sh_mobile_lcdc_info lcdc_info = {
      .ch[0] = {
            .chan = LCDC_CHAN_MAINLCD,
            .bpp = 16,
            .lcd_cfg = ap4evb_lcdc_modes,
            .num_cfg = ARRAY_SIZE(ap4evb_lcdc_modes),
      }
};

static struct resource lcdc_resources[] = {
      [0] = {
            .name = "LCDC",
            .start      = 0xfe940000, /* P4-only space */
            .end  = 0xfe943fff,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = intcs_evt2irq(0x580),
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device lcdc_device = {
      .name       = "sh_mobile_lcdc_fb",
      .num_resources    = ARRAY_SIZE(lcdc_resources),
      .resource   = lcdc_resources,
      .dev  = {
            .platform_data    = &lcdc_info,
            .coherent_dma_mask = ~0,
      },
};

/*
 * QHD display
 */
#ifdef CONFIG_AP4EVB_QHD

/* KEYSC (Needs SW43 set to ON) */
static struct sh_keysc_info keysc_info = {
      .mode       = SH_KEYSC_MODE_1,
      .scan_timing      = 3,
      .delay            = 2500,
      .keycodes = {
            KEY_0, KEY_1, KEY_2, KEY_3, KEY_4,
            KEY_5, KEY_6, KEY_7, KEY_8, KEY_9,
            KEY_A, KEY_B, KEY_C, KEY_D, KEY_E,
            KEY_F, KEY_G, KEY_H, KEY_I, KEY_J,
            KEY_K, KEY_L, KEY_M, KEY_N, KEY_O,
      },
};

static struct resource keysc_resources[] = {
      [0] = {
            .name = "KEYSC",
            .start  = 0xe61b0000,
            .end    = 0xe61b0063,
            .flags  = IORESOURCE_MEM,
      },
      [1] = {
            .start  = evt2irq(0x0be0), /* KEYSC_KEY */
            .flags  = IORESOURCE_IRQ,
      },
};

static struct platform_device keysc_device = {
      .name           = "sh_keysc",
      .id             = 0, /* "keysc0" clock */
      .num_resources  = ARRAY_SIZE(keysc_resources),
      .resource       = keysc_resources,
      .dev  = {
            .platform_data    = &keysc_info,
      },
};

/* MIPI-DSI */
static struct resource mipidsi0_resources[] = {
      [0] = {
            .start  = 0xffc60000,
            .end    = 0xffc63073,
            .flags  = IORESOURCE_MEM,
      },
      [1] = {
            .start  = 0xffc68000,
            .end    = 0xffc680ef,
            .flags  = IORESOURCE_MEM,
      },
};

static struct sh_mipi_dsi_info mipidsi0_info = {
      .data_format      = MIPI_RGB888,
      .lcd_chan   = &lcdc_info.ch[0],
      .vsynw_offset     = 17,
};

static struct platform_device mipidsi0_device = {
      .name           = "sh-mipi-dsi",
      .num_resources  = ARRAY_SIZE(mipidsi0_resources),
      .resource       = mipidsi0_resources,
      .id             = 0,
      .dev  = {
            .platform_data    = &mipidsi0_info,
      },
};

static struct platform_device *qhd_devices[] __initdata = {
      &mipidsi0_device,
      &keysc_device,
};
#endif /* CONFIG_AP4EVB_QHD */

/* FSI */
#define IRQ_FSI         evt2irq(0x1840)
static int __fsi_set_rate(struct clk *clk, long rate, int enable)
{
      int ret = 0;

      if (rate <= 0)
            return ret;

      if (enable) {
            ret = clk_set_rate(clk, rate);
            if (0 == ret)
                  ret = clk_enable(clk);
      } else {
            clk_disable(clk);
      }

      return ret;
}

static int __fsi_set_round_rate(struct clk *clk, long rate, int enable)
{
      return __fsi_set_rate(clk, clk_round_rate(clk, rate), enable);
}

static int fsi_ak4642_set_rate(struct device *dev, int rate, int enable)
{
      struct clk *fsia_ick;
      struct clk *fsiack;
      int ret = -EIO;

      fsia_ick = clk_get(dev, "icka");
      if (IS_ERR(fsia_ick))
            return PTR_ERR(fsia_ick);

      /*
       * FSIACK is connected to AK4642,
       * and use external clock pin from it.
       * it is parent of fsia_ick now.
       */
      fsiack = clk_get_parent(fsia_ick);
      if (!fsiack)
            goto fsia_ick_out;

      /*
       * we get 1/1 divided clock by setting same rate to fsiack and fsia_ick
       *
       ** FIXME **
       * Because the freq_table of external clk (fsiack) are all 0,
       * the return value of clk_round_rate became 0.
       * So, it use __fsi_set_rate here.
       */
      ret = __fsi_set_rate(fsiack, rate, enable);
      if (ret < 0)
            goto fsiack_out;

      ret = __fsi_set_round_rate(fsia_ick, rate, enable);
      if ((ret < 0) && enable)
            __fsi_set_round_rate(fsiack, rate, 0); /* disable FSI ACK */

fsiack_out:
      clk_put(fsiack);

fsia_ick_out:
      clk_put(fsia_ick);

      return 0;
}

static int fsi_hdmi_set_rate(struct device *dev, int rate, int enable)
{
      struct clk *fsib_clk;
      struct clk *fdiv_clk = &sh7372_fsidivb_clk;
      long fsib_rate = 0;
      long fdiv_rate = 0;
      int ackmd_bpfmd;
      int ret;

      switch (rate) {
      case 44100:
            fsib_rate   = rate * 256;
            ackmd_bpfmd = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64;
            break;
      case 48000:
            fsib_rate   = 85428000; /* around 48kHz x 256 x 7 */
            fdiv_rate   = rate * 256;
            ackmd_bpfmd = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64;
            break;
      default:
            pr_err("unsupported rate in FSI2 port B\n");
            return -EINVAL;
      }

      /* FSI B setting */
      fsib_clk = clk_get(dev, "ickb");
      if (IS_ERR(fsib_clk))
            return -EIO;

      ret = __fsi_set_round_rate(fsib_clk, fsib_rate, enable);
      if (ret < 0)
            goto fsi_set_rate_end;

      /* FSI DIV setting */
      ret = __fsi_set_round_rate(fdiv_clk, fdiv_rate, enable);
      if (ret < 0) {
            /* disable FSI B */
            if (enable)
                  __fsi_set_round_rate(fsib_clk, fsib_rate, 0);
            goto fsi_set_rate_end;
      }

      ret = ackmd_bpfmd;

fsi_set_rate_end:
      clk_put(fsib_clk);
      return ret;
}

static int fsi_set_rate(struct device *dev, int is_porta, int rate, int enable)
{
      int ret;

      if (is_porta)
            ret = fsi_ak4642_set_rate(dev, rate, enable);
      else
            ret = fsi_hdmi_set_rate(dev, rate, enable);

      return ret;
}

static struct sh_fsi_platform_info fsi_info = {
      .porta_flags = SH_FSI_BRS_INV |
                   SH_FSI_OUT_SLAVE_MODE |
                   SH_FSI_IN_SLAVE_MODE |
                   SH_FSI_OFMT(PCM) |
                   SH_FSI_IFMT(PCM),

      .portb_flags = SH_FSI_BRS_INV |
                   SH_FSI_BRM_INV |
                   SH_FSI_LRS_INV |
                   SH_FSI_OFMT(SPDIF),
      .set_rate = fsi_set_rate,
};

static struct resource fsi_resources[] = {
      [0] = {
            .name = "FSI",
            .start      = 0xFE3C0000,
            .end  = 0xFE3C0400 - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start  = IRQ_FSI,
            .flags  = IORESOURCE_IRQ,
      },
};

static struct platform_device fsi_device = {
      .name       = "sh_fsi2",
      .id         = -1,
      .num_resources    = ARRAY_SIZE(fsi_resources),
      .resource   = fsi_resources,
      .dev  = {
            .platform_data    = &fsi_info,
      },
};

static struct platform_device fsi_ak4643_device = {
      .name       = "sh_fsi2_a_ak4643",
};

static struct sh_mobile_lcdc_info sh_mobile_lcdc1_info = {
      .clock_source = LCDC_CLK_EXTERNAL,
      .ch[0] = {
            .chan = LCDC_CHAN_MAINLCD,
            .bpp = 16,
            .interface_type = RGB24,
            .clock_divider = 1,
            .flags = LCDC_FLAGS_DWPOL,
      }
};

static struct resource lcdc1_resources[] = {
      [0] = {
            .name = "LCDC1",
            .start      = 0xfe944000,
            .end  = 0xfe947fff,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = intcs_evt2irq(0x1780),
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device lcdc1_device = {
      .name       = "sh_mobile_lcdc_fb",
      .num_resources    = ARRAY_SIZE(lcdc1_resources),
      .resource   = lcdc1_resources,
      .id             = 1,
      .dev  = {
            .platform_data    = &sh_mobile_lcdc1_info,
            .coherent_dma_mask = ~0,
      },
};

static long ap4evb_clk_optimize(unsigned long target, unsigned long *best_freq,
                        unsigned long *parent_freq);


static struct sh_mobile_hdmi_info hdmi_info = {
      .lcd_chan = &sh_mobile_lcdc1_info.ch[0],
      .lcd_dev = &lcdc1_device.dev,
      .flags = HDMI_SND_SRC_SPDIF,
      .clk_optimize_parent = ap4evb_clk_optimize,
};

static struct resource hdmi_resources[] = {
      [0] = {
            .name = "HDMI",
            .start      = 0xe6be0000,
            .end  = 0xe6be00ff,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            /* There's also an HDMI interrupt on INTCS @ 0x18e0 */
            .start      = evt2irq(0x17e0),
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device hdmi_device = {
      .name       = "sh-mobile-hdmi",
      .num_resources    = ARRAY_SIZE(hdmi_resources),
      .resource   = hdmi_resources,
      .id             = -1,
      .dev  = {
            .platform_data    = &hdmi_info,
      },
};

static long ap4evb_clk_optimize(unsigned long target, unsigned long *best_freq,
                        unsigned long *parent_freq)
{
      struct clk *hdmi_ick = clk_get(&hdmi_device.dev, "ick");
      long error;

      if (IS_ERR(hdmi_ick)) {
            int ret = PTR_ERR(hdmi_ick);
            pr_err("Cannot get HDMI ICK: %d\n", ret);
            return ret;
      }

      error = clk_round_parent(hdmi_ick, target, best_freq, parent_freq, 1, 64);

      clk_put(hdmi_ick);

      return error;
}

static struct gpio_led ap4evb_leds[] = {
      {
            .name             = "led4",
            .gpio             = GPIO_PORT185,
            .default_state    = LEDS_GPIO_DEFSTATE_ON,
      },
      {
            .name             = "led2",
            .gpio             = GPIO_PORT186,
            .default_state    = LEDS_GPIO_DEFSTATE_ON,
      },
      {
            .name             = "led3",
            .gpio             = GPIO_PORT187,
            .default_state    = LEDS_GPIO_DEFSTATE_ON,
      },
      {
            .name             = "led1",
            .gpio             = GPIO_PORT188,
            .default_state    = LEDS_GPIO_DEFSTATE_ON,
      }
};

static struct gpio_led_platform_data ap4evb_leds_pdata = {
      .num_leds = ARRAY_SIZE(ap4evb_leds),
      .leds = ap4evb_leds,
};

static struct platform_device leds_device = {
      .name = "leds-gpio",
      .id = 0,
      .dev = {
            .platform_data  = &ap4evb_leds_pdata,
      },
};

static struct i2c_board_info imx074_info = {
      I2C_BOARD_INFO("imx074", 0x1a),
};

struct soc_camera_link imx074_link = {
      .bus_id           = 0,
      .board_info = &imx074_info,
      .i2c_adapter_id   = 0,
      .module_name      = "imx074",
};

static struct platform_device ap4evb_camera = {
      .name   = "soc-camera-pdrv",
      .id     = 0,
      .dev    = {
            .platform_data = &imx074_link,
      },
};

static struct sh_csi2_client_config csi2_clients[] = {
      {
            .phy        = SH_CSI2_PHY_MAIN,
            .lanes            = 3,
            .channel    = 0,
            .pdev       = &ap4evb_camera,
      },
};

static struct sh_csi2_pdata csi2_info = {
      .type       = SH_CSI2C,
      .clients    = csi2_clients,
      .num_clients      = ARRAY_SIZE(csi2_clients),
      .flags            = SH_CSI2_ECC | SH_CSI2_CRC,
};

static struct resource csi2_resources[] = {
      [0] = {
            .name = "CSI2",
            .start      = 0xffc90000,
            .end  = 0xffc90fff,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = intcs_evt2irq(0x17a0),
            .flags  = IORESOURCE_IRQ,
      },
};

static struct platform_device csi2_device = {
      .name   = "sh-mobile-csi2",
      .id     = 0,
      .num_resources    = ARRAY_SIZE(csi2_resources),
      .resource   = csi2_resources,
      .dev    = {
            .platform_data = &csi2_info,
      },
};

static struct sh_mobile_ceu_info sh_mobile_ceu_info = {
      .flags = SH_CEU_FLAG_USE_8BIT_BUS,
      .csi2_dev = &csi2_device.dev,
};

static struct resource ceu_resources[] = {
      [0] = {
            .name = "CEU",
            .start      = 0xfe910000,
            .end  = 0xfe91009f,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = intcs_evt2irq(0x880),
            .flags  = IORESOURCE_IRQ,
      },
      [2] = {
            /* place holder for contiguous memory */
      },
};

static struct platform_device ceu_device = {
      .name       = "sh_mobile_ceu",
      .id             = 0, /* "ceu0" clock */
      .num_resources    = ARRAY_SIZE(ceu_resources),
      .resource   = ceu_resources,
      .dev  = {
            .platform_data    = &sh_mobile_ceu_info,
      },
};

static struct platform_device *ap4evb_devices[] __initdata = {
      &leds_device,
      &nor_flash_device,
      &smc911x_device,
      &sdhi0_device,
      &sdhi1_device,
      &usb1_host_device,
      &fsi_device,
      &fsi_ak4643_device,
      &sh_mmcif_device,
      &lcdc1_device,
      &lcdc_device,
      &hdmi_device,
      &csi2_device,
      &ceu_device,
      &ap4evb_camera,
};

static int __init hdmi_init_pm_clock(void)
{
      struct clk *hdmi_ick = clk_get(&hdmi_device.dev, "ick");
      int ret;
      long rate;

      if (IS_ERR(hdmi_ick)) {
            ret = PTR_ERR(hdmi_ick);
            pr_err("Cannot get HDMI ICK: %d\n", ret);
            goto out;
      }

      ret = clk_set_parent(&sh7372_pllc2_clk, &sh7372_dv_clki_div2_clk);
      if (ret < 0) {
            pr_err("Cannot set PLLC2 parent: %d, %d users\n", ret, sh7372_pllc2_clk.usecount);
            goto out;
      }

      pr_debug("PLLC2 initial frequency %lu\n", clk_get_rate(&sh7372_pllc2_clk));

      rate = clk_round_rate(&sh7372_pllc2_clk, 594000000);
      if (rate < 0) {
            pr_err("Cannot get suitable rate: %ld\n", rate);
            ret = rate;
            goto out;
      }

      ret = clk_set_rate(&sh7372_pllc2_clk, rate);
      if (ret < 0) {
            pr_err("Cannot set rate %ld: %d\n", rate, ret);
            goto out;
      }

      ret = clk_enable(&sh7372_pllc2_clk);
      if (ret < 0) {
            pr_err("Cannot enable pllc2 clock\n");
            goto out;
      }
      pr_debug("PLLC2 set frequency %lu\n", rate);

      ret = clk_set_parent(hdmi_ick, &sh7372_pllc2_clk);
      if (ret < 0) {
            pr_err("Cannot set HDMI parent: %d\n", ret);
            goto out;
      }

out:
      if (!IS_ERR(hdmi_ick))
            clk_put(hdmi_ick);
      return ret;
}

device_initcall(hdmi_init_pm_clock);

static int __init fsi_init_pm_clock(void)
{
      struct clk *fsia_ick;
      int ret;

      fsia_ick = clk_get(&fsi_device.dev, "icka");
      if (IS_ERR(fsia_ick)) {
            ret = PTR_ERR(fsia_ick);
            pr_err("Cannot get FSI ICK: %d\n", ret);
            return ret;
      }

      ret = clk_set_parent(fsia_ick, &sh7372_fsiack_clk);
      if (ret < 0)
            pr_err("Cannot set FSI-A parent: %d\n", ret);

      clk_put(fsia_ick);

      return ret;
}
device_initcall(fsi_init_pm_clock);

/*
 * FIXME !!
 *
 * gpio_no_direction
 * are quick_hack.
 *
 * current gpio frame work doesn't have
 * the method to control only pull up/down/free.
 * this function should be replaced by correct gpio function
 */
static void __init gpio_no_direction(u32 addr)
{
      __raw_writeb(0x00, addr);
}

/* TouchScreen */
#ifdef CONFIG_AP4EVB_QHD
# define GPIO_TSC_IRQ   GPIO_FN_IRQ28_123
# define GPIO_TSC_PORT  GPIO_PORT123
#else /* WVGA */
# define GPIO_TSC_IRQ   GPIO_FN_IRQ7_40
# define GPIO_TSC_PORT  GPIO_PORT40
#endif

#define IRQ28     evt2irq(0x3380) /* IRQ28A */
#define IRQ7      evt2irq(0x02e0) /* IRQ7A */
static int ts_get_pendown_state(void)
{
      int val;

      gpio_free(GPIO_TSC_IRQ);

      gpio_request(GPIO_TSC_PORT, NULL);

      gpio_direction_input(GPIO_TSC_PORT);

      val = gpio_get_value(GPIO_TSC_PORT);

      gpio_request(GPIO_TSC_IRQ, NULL);

      return !val;
}

static int ts_init(void)
{
      gpio_request(GPIO_TSC_IRQ, NULL);

      return 0;
}

static struct tsc2007_platform_data tsc2007_info = {
      .model                  = 2007,
      .x_plate_ohms           = 180,
      .get_pendown_state      = ts_get_pendown_state,
      .init_platform_hw = ts_init,
};

static struct i2c_board_info tsc_device = {
      I2C_BOARD_INFO("tsc2007", 0x48),
      .type       = "tsc2007",
      .platform_data    = &tsc2007_info,
      /*.irq is selected on ap4evb_init */
};

/* I2C */
static struct i2c_board_info i2c0_devices[] = {
      {
            I2C_BOARD_INFO("ak4643", 0x13),
      },
};

static struct i2c_board_info i2c1_devices[] = {
      {
            I2C_BOARD_INFO("r2025sd", 0x32),
      },
};

static struct map_desc ap4evb_io_desc[] __initdata = {
      /* create a 1:1 entity map for 0xe6xxxxxx
       * used by CPGA, INTC and PFC.
       */
      {
            .virtual    = 0xe6000000,
            .pfn        = __phys_to_pfn(0xe6000000),
            .length           = 256 << 20,
            .type       = MT_DEVICE_NONSHARED
      },
};

static void __init ap4evb_map_io(void)
{
      iotable_init(ap4evb_io_desc, ARRAY_SIZE(ap4evb_io_desc));

      /* setup early devices and console here as well */
      sh7372_add_early_devices();
      shmobile_setup_console();
}

#define GPIO_PORT9CR    0xE6051009
#define GPIO_PORT10CR   0xE605100A
#define USCCR1          0xE6058144
static void __init ap4evb_init(void)
{
      u32 srcr4;
      struct clk *clk;

      sh7372_pinmux_init();

      /* enable SCIFA0 */
      gpio_request(GPIO_FN_SCIFA0_TXD, NULL);
      gpio_request(GPIO_FN_SCIFA0_RXD, NULL);

      /* enable SMSC911X */
      gpio_request(GPIO_FN_CS5A,    NULL);
      gpio_request(GPIO_FN_IRQ6_39, NULL);

      /* enable Debug switch (S6) */
      gpio_request(GPIO_PORT32, NULL);
      gpio_request(GPIO_PORT33, NULL);
      gpio_request(GPIO_PORT34, NULL);
      gpio_request(GPIO_PORT35, NULL);
      gpio_direction_input(GPIO_PORT32);
      gpio_direction_input(GPIO_PORT33);
      gpio_direction_input(GPIO_PORT34);
      gpio_direction_input(GPIO_PORT35);
      gpio_export(GPIO_PORT32, 0);
      gpio_export(GPIO_PORT33, 0);
      gpio_export(GPIO_PORT34, 0);
      gpio_export(GPIO_PORT35, 0);

      /* SDHI0 */
      gpio_request(GPIO_FN_SDHICD0, NULL);
      gpio_request(GPIO_FN_SDHIWP0, NULL);
      gpio_request(GPIO_FN_SDHICMD0, NULL);
      gpio_request(GPIO_FN_SDHICLK0, NULL);
      gpio_request(GPIO_FN_SDHID0_3, NULL);
      gpio_request(GPIO_FN_SDHID0_2, NULL);
      gpio_request(GPIO_FN_SDHID0_1, NULL);
      gpio_request(GPIO_FN_SDHID0_0, NULL);

      /* SDHI1 */
      gpio_request(GPIO_FN_SDHICMD1, NULL);
      gpio_request(GPIO_FN_SDHICLK1, NULL);
      gpio_request(GPIO_FN_SDHID1_3, NULL);
      gpio_request(GPIO_FN_SDHID1_2, NULL);
      gpio_request(GPIO_FN_SDHID1_1, NULL);
      gpio_request(GPIO_FN_SDHID1_0, NULL);

      /* MMCIF */
      gpio_request(GPIO_FN_MMCD0_0, NULL);
      gpio_request(GPIO_FN_MMCD0_1, NULL);
      gpio_request(GPIO_FN_MMCD0_2, NULL);
      gpio_request(GPIO_FN_MMCD0_3, NULL);
      gpio_request(GPIO_FN_MMCD0_4, NULL);
      gpio_request(GPIO_FN_MMCD0_5, NULL);
      gpio_request(GPIO_FN_MMCD0_6, NULL);
      gpio_request(GPIO_FN_MMCD0_7, NULL);
      gpio_request(GPIO_FN_MMCCMD0, NULL);
      gpio_request(GPIO_FN_MMCCLK0, NULL);

      /* USB enable */
      gpio_request(GPIO_FN_VBUS0_1,    NULL);
      gpio_request(GPIO_FN_IDIN_1_18,  NULL);
      gpio_request(GPIO_FN_PWEN_1_115, NULL);
      gpio_request(GPIO_FN_OVCN_1_114, NULL);
      gpio_request(GPIO_FN_EXTLP_1,    NULL);
      gpio_request(GPIO_FN_OVCN2_1,    NULL);

      /* setup USB phy */
      __raw_writew(0x8a0a, 0xE6058130);   /* USBCR4 */

      /* enable FSI2 port A (ak4643) */
      gpio_request(GPIO_FN_FSIAIBT, NULL);
      gpio_request(GPIO_FN_FSIAILR, NULL);
      gpio_request(GPIO_FN_FSIAISLD,      NULL);
      gpio_request(GPIO_FN_FSIAOSLD,      NULL);
      gpio_request(GPIO_PORT161,    NULL);
      gpio_direction_output(GPIO_PORT161, 0); /* slave */

      gpio_request(GPIO_PORT9, NULL);
      gpio_request(GPIO_PORT10, NULL);
      gpio_no_direction(GPIO_PORT9CR);  /* FSIAOBT needs no direction */
      gpio_no_direction(GPIO_PORT10CR); /* FSIAOLR needs no direction */

      /* card detect pin for MMC slot (CN7) */
      gpio_request(GPIO_PORT41, NULL);
      gpio_direction_input(GPIO_PORT41);

      /* setup FSI2 port B (HDMI) */
      gpio_request(GPIO_FN_FSIBCK, NULL);
      __raw_writew(__raw_readw(USCCR1) & ~(1 << 6), USCCR1); /* use SPDIF */

      /* set SPU2 clock to 119.6 MHz */
      clk = clk_get(NULL, "spu_clk");
      if (!IS_ERR(clk)) {
            clk_set_rate(clk, clk_round_rate(clk, 119600000));
            clk_put(clk);
      }

      /*
       * set irq priority, to avoid sound chopping
       * when NFS rootfs is used
       *  FSI(3) > SMSC911X(2)
       */
      intc_set_priority(IRQ_FSI, 3);

      i2c_register_board_info(0, i2c0_devices,
                        ARRAY_SIZE(i2c0_devices));

      i2c_register_board_info(1, i2c1_devices,
                        ARRAY_SIZE(i2c1_devices));

#ifdef CONFIG_AP4EVB_QHD

      /*
       * For QHD Panel (MIPI-DSI, CONFIG_AP4EVB_QHD=y) and
       * IRQ28 for Touch Panel, set dip switches S3, S43 as OFF, ON.
       */

      /* enable KEYSC */
      gpio_request(GPIO_FN_KEYOUT0, NULL);
      gpio_request(GPIO_FN_KEYOUT1, NULL);
      gpio_request(GPIO_FN_KEYOUT2, NULL);
      gpio_request(GPIO_FN_KEYOUT3, NULL);
      gpio_request(GPIO_FN_KEYOUT4, NULL);
      gpio_request(GPIO_FN_KEYIN0_136, NULL);
      gpio_request(GPIO_FN_KEYIN1_135, NULL);
      gpio_request(GPIO_FN_KEYIN2_134, NULL);
      gpio_request(GPIO_FN_KEYIN3_133, NULL);
      gpio_request(GPIO_FN_KEYIN4,     NULL);

      /* enable TouchScreen */
      set_irq_type(IRQ28, IRQ_TYPE_LEVEL_LOW);

      tsc_device.irq = IRQ28;
      i2c_register_board_info(1, &tsc_device, 1);

      /* LCDC0 */
      lcdc_info.clock_source              = LCDC_CLK_PERIPHERAL;
      lcdc_info.ch[0].interface_type            = RGB24;
      lcdc_info.ch[0].clock_divider       = 1;
      lcdc_info.ch[0].flags               = LCDC_FLAGS_DWPOL;
      lcdc_info.ch[0].lcd_size_cfg.width  = 44;
      lcdc_info.ch[0].lcd_size_cfg.height = 79;

      platform_add_devices(qhd_devices, ARRAY_SIZE(qhd_devices));

#else
      /*
       * For WVGA Panel (18-bit RGB, CONFIG_AP4EVB_WVGA=y) and
       * IRQ7 for Touch Panel, set dip switches S3, S43 to ON, OFF.
       */

      gpio_request(GPIO_FN_LCDD17,   NULL);
      gpio_request(GPIO_FN_LCDD16,   NULL);
      gpio_request(GPIO_FN_LCDD15,   NULL);
      gpio_request(GPIO_FN_LCDD14,   NULL);
      gpio_request(GPIO_FN_LCDD13,   NULL);
      gpio_request(GPIO_FN_LCDD12,   NULL);
      gpio_request(GPIO_FN_LCDD11,   NULL);
      gpio_request(GPIO_FN_LCDD10,   NULL);
      gpio_request(GPIO_FN_LCDD9,    NULL);
      gpio_request(GPIO_FN_LCDD8,    NULL);
      gpio_request(GPIO_FN_LCDD7,    NULL);
      gpio_request(GPIO_FN_LCDD6,    NULL);
      gpio_request(GPIO_FN_LCDD5,    NULL);
      gpio_request(GPIO_FN_LCDD4,    NULL);
      gpio_request(GPIO_FN_LCDD3,    NULL);
      gpio_request(GPIO_FN_LCDD2,    NULL);
      gpio_request(GPIO_FN_LCDD1,    NULL);
      gpio_request(GPIO_FN_LCDD0,    NULL);
      gpio_request(GPIO_FN_LCDDISP,  NULL);
      gpio_request(GPIO_FN_LCDDCK,   NULL);

      gpio_request(GPIO_PORT189, NULL); /* backlight */
      gpio_direction_output(GPIO_PORT189, 1);

      gpio_request(GPIO_PORT151, NULL); /* LCDDON */
      gpio_direction_output(GPIO_PORT151, 1);

      lcdc_info.clock_source              = LCDC_CLK_BUS;
      lcdc_info.ch[0].interface_type            = RGB18;
      lcdc_info.ch[0].clock_divider       = 2;
      lcdc_info.ch[0].flags               = 0;
      lcdc_info.ch[0].lcd_size_cfg.width  = 152;
      lcdc_info.ch[0].lcd_size_cfg.height = 91;

      /* enable TouchScreen */
      set_irq_type(IRQ7, IRQ_TYPE_LEVEL_LOW);

      tsc_device.irq = IRQ7;
      i2c_register_board_info(0, &tsc_device, 1);
#endif /* CONFIG_AP4EVB_QHD */

      /* CEU */

      /*
       * TODO: reserve memory for V4L2 DMA buffers, when a suitable API
       * becomes available
       */

      /* MIPI-CSI stuff */
      gpio_request(GPIO_FN_VIO_CKO, NULL);

      clk = clk_get(NULL, "vck1_clk");
      if (!IS_ERR(clk)) {
            clk_set_rate(clk, clk_round_rate(clk, 13000000));
            clk_enable(clk);
            clk_put(clk);
      }

      sh7372_add_standard_devices();

      /* HDMI */
      gpio_request(GPIO_FN_HDMI_HPD, NULL);
      gpio_request(GPIO_FN_HDMI_CEC, NULL);

      /* Reset HDMI, must be held at least one EXTALR (32768Hz) period */
#define SRCR4 0xe61580bc
      srcr4 = __raw_readl(SRCR4);
      __raw_writel(srcr4 | (1 << 13), SRCR4);
      udelay(50);
      __raw_writel(srcr4 & ~(1 << 13), SRCR4);

      platform_add_devices(ap4evb_devices, ARRAY_SIZE(ap4evb_devices));
}

static void __init ap4evb_timer_init(void)
{
      sh7372_clock_init();
      shmobile_timer.init();

      /* External clock source */
      clk_set_rate(&sh7372_dv_clki_clk, 27000000);
}

static struct sys_timer ap4evb_timer = {
      .init       = ap4evb_timer_init,
};

MACHINE_START(AP4EVB, "ap4evb")
      .map_io           = ap4evb_map_io,
      .init_irq   = sh7372_init_irq,
      .handle_irq = shmobile_handle_irq_intc,
      .init_machine     = ap4evb_init,
      .timer            = &ap4evb_timer,
MACHINE_END

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