/*
 * mackerel board support
 *
 * Copyright (C) 2010 Renesas Solutions Corp.
 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
 *
 * based on ap4evb
 * 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/delay.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/input.h>
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/leds.h>
#include <linux/mfd/tmio.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sh_mmcif.h>
#include <linux/mmc/sh_mobile_sdhi.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/sh_flctl.h>
#include <linux/pm_clock.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <linux/smsc911x.h>
#include <linux/sh_intc.h>
#include <linux/tca6416_keypad.h>
#include <linux/usb/renesas_usbhs.h>
#include <linux/dma-mapping.h>

#include <video/sh_mobile_hdmi.h>
#include <video/sh_mobile_lcdc.h>
#include <media/sh_mobile_ceu.h>
#include <media/soc_camera.h>
#include <media/soc_camera_platform.h>
#include <sound/sh_fsi.h>
#include <sound/simple_card.h>

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

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

#include "sh-gpio.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
 */

/*
 * CPU mode
 *
 * SW4                                     | Boot Area| Master   | Remarks
 *  1  | 2   | 3   | 4   | 5   | 6   | 8   |          | Processor|
 * ----+-----+-----+-----+-----+-----+-----+----------+----------+--------------
 * ON  | ON  | OFF | ON  | ON  | OFF | OFF | External | System   | External ROM
 * ON  | ON  | ON  | ON  | ON  | OFF | OFF | External | System   | ROM Debug
 * ON  | ON  | X   | ON  | OFF | OFF | OFF | Built-in | System   | ROM Debug
 * X   | OFF | X   | X   | X   | X   | OFF | Built-in | System   | MaskROM
 * OFF | X   | X   | X   | X   | X   | OFF | Built-in | System   | MaskROM
 * X   | X   | X   | OFF | X   | X   | OFF | Built-in | System   | MaskROM
 * OFF | ON  | OFF | X   | X   | OFF | ON  | External | System   | Standalone
 * ON  | OFF | OFF | X   | X   | OFF | ON  | External | Realtime | Standalone
*/

/*
 * 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
 */

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

/*
 * 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
 */

/*
 * External interrupt pin settings
 *
 * IRQX  | pin setting        | device             | level
 * ------+--------------------+--------------------+-------
 * IRQ0  | ICR1A.IRQ0SA=0010  | SDHI2 card detect  | Low
 * IRQ6  | ICR1A.IRQ6SA=0011  | Ether(LAN9220)     | High
 * IRQ7  | ICR1A.IRQ7SA=0010  | LCD Touch Panel    | Low
 * IRQ8  | ICR2A.IRQ8SA=0010  | MMC/SD card detect | Low
 * IRQ9  | ICR2A.IRQ9SA=0010  | KEY(TCA6408)       | Low
 * IRQ21 | ICR4A.IRQ21SA=0011 | Sensor(ADXL345)    | High
 * IRQ22 | ICR4A.IRQ22SA=0011 | Sensor(AK8975)     | High
 */

/*
 * USB
 *
 * USB0 : CN22 : Function
 * USB1 : CN31 : Function/Host *1
 *
 * J30 (for CN31) *1
 * ----------+---------------+-------------
 * 1-2 short | VBUS 5V       | Host
 * open      | external VBUS | Function
 *
 * CAUTION
 *
 * renesas_usbhs driver can use external interrupt mode
 * (which come from USB-PHY) or autonomy mode (it use own interrupt)
 * for detecting connection/disconnection when Function.
 * USB will be power OFF while it has been disconnecting
 * if external interrupt mode, and it is always power ON if autonomy mode,
 *
 * mackerel can not use external interrupt (IRQ7-PORT167) mode on "USB0",
 * because Touchscreen is using IRQ7-PORT40.
 * It is impossible to use IRQ7 demux on this board.
 */

/*
 * SDHI0 (CN12)
 *
 * SW56 : OFF
 *
 */

/* MMC /SDHI1 (CN7)
 *
 * I/O voltage : 1.8v
 *
 * Power voltage : 1.8v or 3.3v
 *  J22 : select power voltage *1
 *	1-2 pin : 1.8v
 *	2-3 pin : 3.3v
 *
 * *1
 * Please change J22 depends the card to be used.
 * MMC's OCR field set to support either voltage for the card inserted.
 *
 *	SW1	|	SW33
 *		| bit1 | bit2 | bit3 | bit4
 * -------------+------+------+------+-------
 * MMC0   OFF	|  OFF |   X  |  ON  |  X       (Use MMCIF)
 * SDHI1  OFF	|  ON  |   X  |  OFF |  X       (Use MFD_SH_MOBILE_SDHI)
 *
 */

/*
 * SDHI2 (CN23)
 *
 * microSD card sloct
 *
 */

/*
 * FSI - AK4642
 *
 * it needs amixer settings for playing
 *
 * amixer set "Headphone" on
 * amixer set "HPOUTL Mixer DACH" on
 * amixer set "HPOUTR Mixer DACH" on
 */

/* Fixed 3.3V and 1.8V regulators to be used by multiple devices */
static struct regulator_consumer_supply fixed1v8_power_consumers[] =
{
	/*
	 * J22 on mackerel switches mmcif.0 and sdhi.1 between 1.8V and 3.3V
	 * Since we cannot support both voltages, we support the default 1.8V
	 */
	REGULATOR_SUPPLY("vmmc", "sh_mobile_sdhi.1"),
	REGULATOR_SUPPLY("vqmmc", "sh_mobile_sdhi.1"),
	REGULATOR_SUPPLY("vmmc", "sh_mmcif.0"),
	REGULATOR_SUPPLY("vqmmc", "sh_mmcif.0"),
};

static struct regulator_consumer_supply fixed3v3_power_consumers[] =
{
	REGULATOR_SUPPLY("vmmc", "sh_mobile_sdhi.0"),
	REGULATOR_SUPPLY("vqmmc", "sh_mobile_sdhi.0"),
	REGULATOR_SUPPLY("vmmc", "sh_mobile_sdhi.2"),
	REGULATOR_SUPPLY("vqmmc", "sh_mobile_sdhi.2"),
};

/* Dummy supplies, where voltage doesn't matter */
static struct regulator_consumer_supply dummy_supplies[] = {
	REGULATOR_SUPPLY("vddvario", "smsc911x"),
	REGULATOR_SUPPLY("vdd33a", "smsc911x"),
};

/* 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	= 0x20000000, /* CS0 shadow instead of regular CS0 */
		.end	= 0x28000000 - 1, /* needed by USB MASK ROM boot */
		.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 */
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,
	},
};

/* MERAM */
static struct sh_mobile_meram_info mackerel_meram_info = {
	.addr_mode	= SH_MOBILE_MERAM_MODE1,
};

static struct resource meram_resources[] = {
	[0] = {
		.name	= "regs",
		.start	= 0xe8000000,
		.end	= 0xe807ffff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.name	= "meram",
		.start	= 0xe8080000,
		.end	= 0xe81fffff,
		.flags	= IORESOURCE_MEM,
	},
};

static struct platform_device meram_device = {
	.name		= "sh_mobile_meram",
	.id		= 0,
	.num_resources	= ARRAY_SIZE(meram_resources),
	.resource	= meram_resources,
	.dev		= {
		.platform_data = &mackerel_meram_info,
	},
};

/* LCDC */
static struct fb_videomode mackerel_lcdc_modes[] = {
	{
		.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,
	},
};

static int mackerel_set_brightness(int brightness)
{
	gpio_set_value(GPIO_PORT31, brightness);

	return 0;
}

static const struct sh_mobile_meram_cfg lcd_meram_cfg = {
	.icb[0] = {
		.meram_size     = 0x40,
	},
	.icb[1] = {
		.meram_size     = 0x40,
	},
};

static struct sh_mobile_lcdc_info lcdc_info = {
	.meram_dev = &mackerel_meram_info,
	.clock_source = LCDC_CLK_BUS,
	.ch[0] = {
		.chan = LCDC_CHAN_MAINLCD,
		.fourcc = V4L2_PIX_FMT_RGB565,
		.lcd_modes = mackerel_lcdc_modes,
		.num_modes = ARRAY_SIZE(mackerel_lcdc_modes),
		.interface_type		= RGB24,
		.clock_divider		= 3,
		.flags			= 0,
		.panel_cfg = {
			.width		= 152,
			.height		= 91,
		},
		.bl_info = {
			.name = "sh_mobile_lcdc_bl",
			.max_brightness = 1,
			.set_brightness = mackerel_set_brightness,
		},
		.meram_cfg = &lcd_meram_cfg,
	}
};

static struct resource lcdc_resources[] = {
	[0] = {
		.name	= "LCDC",
		.start	= 0xfe940000,
		.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,
	},
};

/* HDMI */
static struct sh_mobile_hdmi_info hdmi_info = {
	.flags		= HDMI_SND_SRC_SPDIF,
};

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 const struct sh_mobile_meram_cfg hdmi_meram_cfg = {
	.icb[0] = {
		.meram_size     = 0x100,
	},
	.icb[1] = {
		.meram_size     = 0x100,
	},
};

static struct sh_mobile_lcdc_info hdmi_lcdc_info = {
	.meram_dev = &mackerel_meram_info,
	.clock_source = LCDC_CLK_EXTERNAL,
	.ch[0] = {
		.chan = LCDC_CHAN_MAINLCD,
		.fourcc = V4L2_PIX_FMT_RGB565,
		.interface_type = RGB24,
		.clock_divider = 1,
		.flags = LCDC_FLAGS_DWPOL,
		.meram_cfg = &hdmi_meram_cfg,
		.tx_dev = &hdmi_device,
	}
};

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

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

static struct asoc_simple_dai_init_info fsi2_hdmi_init_info = {
	.cpu_daifmt	= SND_SOC_DAIFMT_CBM_CFM,
};

static struct asoc_simple_card_info fsi2_hdmi_info = {
	.name		= "HDMI",
	.card		= "FSI2B-HDMI",
	.cpu_dai	= "fsib-dai",
	.codec		= "sh-mobile-hdmi",
	.platform	= "sh_fsi2",
	.codec_dai	= "sh_mobile_hdmi-hifi",
	.init		= &fsi2_hdmi_init_info,
};

static struct platform_device fsi_hdmi_device = {
	.name	= "asoc-simple-card",
	.id	= 1,
	.dev	= {
		.platform_data	= &fsi2_hdmi_info,
	},
};

static void __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;
	}

	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);

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

/* USBHS0 is connected to CN22 which takes a USB Mini-B plug
 *
 * The sh7372 SoC has IRQ7 set aside for USBHS0 hotplug,
 * but on this particular board IRQ7 is already used by
 * the touch screen. This leaves us with software polling.
 */
#define USBHS0_POLL_INTERVAL (HZ * 5)

struct usbhs_private {
	void __iomem *usbphyaddr;
	void __iomem *usbcrcaddr;
	struct renesas_usbhs_platform_info info;
	struct delayed_work work;
	struct platform_device *pdev;
};

#define usbhs_get_priv(pdev)				\
	container_of(renesas_usbhs_get_info(pdev),	\
		     struct usbhs_private, info)

#define usbhs_is_connected(priv)			\
	(!((1 << 7) & __raw_readw(priv->usbcrcaddr)))

static int usbhs_get_vbus(struct platform_device *pdev)
{
	return usbhs_is_connected(usbhs_get_priv(pdev));
}

static void usbhs_phy_reset(struct platform_device *pdev)
{
	struct usbhs_private *priv = usbhs_get_priv(pdev);

	/* init phy */
	__raw_writew(0x8a0a, priv->usbcrcaddr);
}

static int usbhs0_get_id(struct platform_device *pdev)
{
	return USBHS_GADGET;
}

static void usbhs0_work_function(struct work_struct *work)
{
	struct usbhs_private *priv = container_of(work, struct usbhs_private,
						  work.work);

	renesas_usbhs_call_notify_hotplug(priv->pdev);
	schedule_delayed_work(&priv->work, USBHS0_POLL_INTERVAL);
}

static int usbhs0_hardware_init(struct platform_device *pdev)
{
	struct usbhs_private *priv = usbhs_get_priv(pdev);

	priv->pdev = pdev;
	INIT_DELAYED_WORK(&priv->work, usbhs0_work_function);
	schedule_delayed_work(&priv->work, USBHS0_POLL_INTERVAL);
	return 0;
}

static void usbhs0_hardware_exit(struct platform_device *pdev)
{
	struct usbhs_private *priv = usbhs_get_priv(pdev);

	cancel_delayed_work_sync(&priv->work);
}

static struct usbhs_private usbhs0_private = {
	.usbcrcaddr	= IOMEM(0xe605810c),		/* USBCR2 */
	.info = {
		.platform_callback = {
			.hardware_init	= usbhs0_hardware_init,
			.hardware_exit	= usbhs0_hardware_exit,
			.phy_reset	= usbhs_phy_reset,
			.get_id		= usbhs0_get_id,
			.get_vbus	= usbhs_get_vbus,
		},
		.driver_param = {
			.buswait_bwait	= 4,
			.d0_tx_id	= SHDMA_SLAVE_USB0_TX,
			.d1_rx_id	= SHDMA_SLAVE_USB0_RX,
		},
	},
};

static struct resource usbhs0_resources[] = {
	[0] = {
		.name	= "USBHS0",
		.start	= 0xe6890000,
		.end	= 0xe68900e6 - 1,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= evt2irq(0x1ca0) /* USB0_USB0I0 */,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device usbhs0_device = {
	.name	= "renesas_usbhs",
	.id	= 0,
	.dev = {
		.platform_data		= &usbhs0_private.info,
	},
	.num_resources	= ARRAY_SIZE(usbhs0_resources),
	.resource	= usbhs0_resources,
};

/* USBHS1 is connected to CN31 which takes a USB Mini-AB plug
 *
 * Use J30 to select between Host and Function. This setting
 * can however not be detected by software. Hotplug of USBHS1
 * is provided via IRQ8.
 *
 * Current USB1 works as "USB Host".
 *  - set J30 "short"
 *
 * If you want to use it as "USB gadget",
 *  - J30 "open"
 *  - modify usbhs1_get_id() USBHS_HOST -> USBHS_GADGET
 *  - add .get_vbus = usbhs_get_vbus in usbhs1_private
 *  - check usbhs0_device(pio)/usbhs1_device(irq) order in mackerel_devices.
 */
#define IRQ8 evt2irq(0x0300)
#define USB_PHY_MODE		(1 << 4)
#define USB_PHY_INT_EN		((1 << 3) | (1 << 2))
#define USB_PHY_ON		(1 << 1)
#define USB_PHY_OFF		(1 << 0)
#define USB_PHY_INT_CLR		(USB_PHY_ON | USB_PHY_OFF)

static irqreturn_t usbhs1_interrupt(int irq, void *data)
{
	struct platform_device *pdev = data;
	struct usbhs_private *priv = usbhs_get_priv(pdev);

	dev_dbg(&pdev->dev, "%s\n", __func__);

	renesas_usbhs_call_notify_hotplug(pdev);

	/* clear status */
	__raw_writew(__raw_readw(priv->usbphyaddr) | USB_PHY_INT_CLR,
		     priv->usbphyaddr);

	return IRQ_HANDLED;
}

static int usbhs1_hardware_init(struct platform_device *pdev)
{
	struct usbhs_private *priv = usbhs_get_priv(pdev);
	int ret;

	/* clear interrupt status */
	__raw_writew(USB_PHY_MODE | USB_PHY_INT_CLR, priv->usbphyaddr);

	ret = request_irq(IRQ8, usbhs1_interrupt, IRQF_TRIGGER_HIGH,
			  dev_name(&pdev->dev), pdev);
	if (ret) {
		dev_err(&pdev->dev, "request_irq err\n");
		return ret;
	}
