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path: root/kernel/arch/blackfin/configs/BF527-EZKIT_defconfig
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CONFIG_EXPERIMENTAL=y
CONFIG_SYSVIPC=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_BLK_DEV_INITRD=y
CONFIG_EXPERT=y
# CONFIG_ELF_CORE is not set
# CONFIG_FUTEX is not set
# CONFIG_SIGNALFD is not set
# CONFIG_TIMERFD is not set
# CONFIG_EVENTFD is not set
# CONFIG_AIO is not set
CONFIG_SLAB=y
CONFIG_MMAP_ALLOW_UNINITIALIZED=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_LBDAF is not set
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_PREEMPT_VOLUNTARY=y
CONFIG_BF527=y
CONFIG_BF_REV_0_1=y
CONFIG_IRQ_USB_INT0=11
CONFIG_IRQ_USB_INT1=11
CONFIG_IRQ_USB_INT2=11
CONFIG_IRQ_USB_DMA=11
# CONFIG_CYCLES_CLOCKSOURCE is not set
# CONFIG_SCHEDULE_L1 is not set
# CONFIG_MEMSET_L1 is not set
# CONFIG_MEMCPY_L1 is not set
# CONFIG_SYS_BFIN_SPINLOCK_L1 is not set
CONFIG_NOMMU_INITIAL_TRIM_EXCESS=0
CONFIG_C_CDPRIO=y
CONFIG_BANK_3=0x99B2
CONFIG_BINFMT_FLAT=y
CONFIG_BINFMT_ZFLAT=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_PNP=y
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_LRO is not set
# CONFIG_INET_DIAG is not set
# CONFIG_IPV6 is not set
CONFIG_IRDA=m
CONFIG_IRLAN=m
CONFIG_IRCOMM=m
CONFIG_IRTTY_SIR=m
CONFIG_BFIN_SIR=m
CONFIG_BFIN_SIR0=y
# CONFIG_WIRELESS is not set
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
# CONFIG_FW_LOADER is not set
CONFIG_MTD=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_JEDECPROBE=m
CONFIG_MTD_RAM=y
CONFIG_MTD_ROM=m
CONFIG_MTD_COMPLEX_MAPPINGS=y
CONFIG_MTD_M25P80=y
CONFIG_MTD_NAND=m
CONFIG_MTD_SPI_NOR=y
CONFIG_BLK_DEV_RAM=y
CONFIG_SCSI=y
# CONFIG_SCSI_PROC_FS is not set
CONFIG_BLK_DEV_SD=y
CONFIG_BLK_DEV_SR=m
# CONFIG_SCSI_LOWLEVEL is not set
CONFIG_NETDEVICES=y
CONFIG_NET_BFIN=y
CONFIG_BFIN_MAC=y
# CONFIG_NET_VENDOR_BROADCOM is not set
# CONFIG_NET_VENDOR_CHELSIO is not set
# CONFIG_NET_VENDOR_INTEL is not set
# CONFIG_NET_VENDOR_MARVELL is not set
# CONFIG_NET_VENDOR_MICREL is not set
# CONFIG_NET_VENDOR_MICROCHIP is not set
# CONFIG_NET_VENDOR_NATSEMI is not set
# CONFIG_NET_VENDOR_SEEQ is not set
# CONFIG_NET_VENDOR_SMSC is not set
# CONFIG_NET_VENDOR_STMICRO is not set
# CONFIG_WLAN is not set
CONFIG_INPUT_FF_MEMLESS=m
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
CONFIG_INPUT_MISC=y
# CONFIG_SERIO is not set
# CONFIG_LEGACY_PTYS is not set
CONFIG_BFIN_JTAG_COMM=m
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_BFIN=y
CONFIG_SERIAL_BFIN_CONSOLE=y
CONFIG_SERIAL_BFIN_UART1=y
# CONFIG_HW_RANDOM is not set
CONFIG_I2C=y
CONFIG_I2C_CHARDEV=m
CONFIG_I2C_BLACKFIN_TWI=y
CONFIG_I2C_BLACKFIN_TWI_CLK_KHZ=100
CONFIG_SPI=y
CONFIG_SPI_BFIN5XX=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_SYSFS=y
# CONFIG_HWMON is not set
CONFIG_WATCHDOG=y
CONFIG_BFIN_WDT=y
CONFIG_FB=y
CONFIG_FB_BFIN_T350MCQB=y
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_LTV350QV=m
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_LOGO=y
# CONFIG_LOGO_LINUX_MONO is not set
# CONFIG_LOGO_LINUX_VGA16 is not set
# CONFIG_LOGO_LINUX_CLUT224 is not set
# CONFIG_LOGO_BLACKFIN_VGA16 is not set
CONFIG_SOUND=y
CONFIG_SND=y
CONFIG_SND_SOC=y
CONFIG_SND_BF5XX_I2S=y
CONFIG_SND_BF5XX_SOC_SSM2602=y
CONFIG_HID_A4TECH=y
CONFIG_HID_APPLE=y
CONFIG_HID_BELKIN=y
CONFIG_HID_CHERRY=y
CONFIG_HID_CHICONY=y
CONFIG_HID_CYPRESS=y
CONFIG_HID_EZKEY=y
CONFIG_HID_GYRATION=y
CONFIG_HID_LOGITECH=y
CONFIG_HID_MICROSOFT=y
CONFIG_HID_MONTEREY=y
CONFIG_HID_PANTHERLORD=y
CONFIG_HID_PETALYNX=y
CONFIG_HID_SAMSUNG=y
CONFIG_HID_SONY=y
CONFIG_HID_SUNPLUS=y
CONFIG_USB=y
# CONFIG_USB_DEVICE_CLASS is not set
CONFIG_USB_OTG_BLACKLIST_HUB=y
CONFIG_USB_MON=y
CONFIG_USB_MUSB_HDRC=y
CONFIG_MUSB_PIO_ONLY=y
CONFIG_USB_MUSB_BLACKFIN=y
CONFIG_MUSB_PIO_ONLY=y
CONFIG_USB_STORAGE=y
CONFIG_USB_GADGET=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_BFIN=y
CONFIG_EXT2_FS=m
# CONFIG_DNOTIFY is not set
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
CONFIG_UDF_FS=m
CONFIG_VFAT_FS=m
CONFIG_JFFS2_FS=m
CONFIG_NFS_FS=m
CONFIG_NFS_V3=y
CONFIG_NLS_CODEPAGE_437=m
CONFIG_NLS_CODEPAGE_936=m
CONFIG_NLS_ISO8859_1=m
CONFIG_NLS_UTF8=m
CONFIG_DEBUG_SHIRQ=y
CONFIG_DETECT_HUNG_TASK=y
CONFIG_DEBUG_INFO=y
# CONFIG_FTRACE is not set
CONFIG_DEBUG_MMRS=y
CONFIG_DEBUG_HWERR=y
CONFIG_EXACT_HWERR=y
CONFIG_DEBUG_DOUBLEFAULT=y
CONFIG_DEBUG_BFIN_HWTRACE_COMPRESSION_ONE=y
CONFIG_EARLY_PRINTK=y
CONFIG_CPLB_INFO=y
CONFIG_BFIN_PSEUDODBG_INSNS=y
CONFIG_CRYPTO=y
# CONFIG_CRYPTO_ANSI_CPRNG is not set
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/* ------------------------------------------------------------------------- */
/* i2c-iop3xx.c i2c driver algorithms for Intel XScale IOP3xx & IXP46x       */
/* ------------------------------------------------------------------------- */
/* Copyright (C) 2003 Peter Milne, D-TACQ Solutions Ltd
 *                    <Peter dot Milne at D hyphen TACQ dot com>
 *
 * With acknowledgements to i2c-algo-ibm_ocp.c by
 * Ian DaSilva, MontaVista Software, Inc. idasilva@mvista.com
 *
 * And i2c-algo-pcf.c, which was created by Simon G. Vogl and Hans Berglund:
 *
 * Copyright (C) 1995-1997 Simon G. Vogl, 1998-2000 Hans Berglund
 *
 * And which acknowledged Kyösti Mälkki <kmalkki@cc.hut.fi>,
 * Frodo Looijaard <frodol@dds.nl>, Martin Bailey<mbailey@littlefeet-inc.com>
 *
 * Major cleanup by Deepak Saxena <dsaxena@plexity.net>, 01/2005:
 *
 * - Use driver model to pass per-chip info instead of hardcoding and #ifdefs
 * - Use ioremap/__raw_readl/__raw_writel instead of direct dereference
 * - Make it work with IXP46x chips
 * - Cleanup function names, coding style, etc
 *
 * - writing to slave address causes latchup on iop331.
 *	fix: driver refuses to address self.
 *
 * 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.
 */

#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/io.h>
#include <linux/gpio.h>

#include "i2c-iop3xx.h"

/* global unit counter */
static int i2c_id;

static inline unsigned char
iic_cook_addr(struct i2c_msg *msg)
{
	unsigned char addr;

	addr = (msg->addr << 1);

	if (msg->flags & I2C_M_RD)
		addr |= 1;

	return addr;
}

static void
iop3xx_i2c_reset(struct i2c_algo_iop3xx_data *iop3xx_adap)
{
	/* Follows devman 9.3 */
	__raw_writel(IOP3XX_ICR_UNIT_RESET, iop3xx_adap->ioaddr + CR_OFFSET);
	__raw_writel(IOP3XX_ISR_CLEARBITS, iop3xx_adap->ioaddr + SR_OFFSET);
	__raw_writel(0, iop3xx_adap->ioaddr + CR_OFFSET);
}

static void
iop3xx_i2c_enable(struct i2c_algo_iop3xx_data *iop3xx_adap)
{
	u32 cr = IOP3XX_ICR_GCD | IOP3XX_ICR_SCLEN | IOP3XX_ICR_UE;

	/*
	 * Every time unit enable is asserted, GPOD needs to be cleared
	 * on IOP3XX to avoid data corruption on the bus.
	 */
#if defined(CONFIG_ARCH_IOP32X) || defined(CONFIG_ARCH_IOP33X)
	if (iop3xx_adap->id == 0) {
		gpio_set_value(7, 0);
		gpio_set_value(6, 0);
	} else {
		gpio_set_value(5, 0);
		gpio_set_value(4, 0);
	}
#endif
	/* NB SR bits not same position as CR IE bits :-( */
	iop3xx_adap->SR_enabled =
		IOP3XX_ISR_ALD | IOP3XX_ISR_BERRD |
		IOP3XX_ISR_RXFULL | IOP3XX_ISR_TXEMPTY;

	cr |= IOP3XX_ICR_ALD_IE | IOP3XX_ICR_BERR_IE |
		IOP3XX_ICR_RXFULL_IE | IOP3XX_ICR_TXEMPTY_IE;

	__raw_writel(cr, iop3xx_adap->ioaddr + CR_OFFSET);
}

static void
iop3xx_i2c_transaction_cleanup(struct i2c_algo_iop3xx_data *iop3xx_adap)
{
	unsigned long cr = __raw_readl(iop3xx_adap->ioaddr + CR_OFFSET);

	cr &= ~(IOP3XX_ICR_MSTART | IOP3XX_ICR_TBYTE |
		IOP3XX_ICR_MSTOP | IOP3XX_ICR_SCLEN);

	__raw_writel(cr, iop3xx_adap->ioaddr + CR_OFFSET);
}

/*
 * NB: the handler has to clear the source of the interrupt!
 * Then it passes the SR flags of interest to BH via adap data
 */
static irqreturn_t
iop3xx_i2c_irq_handler(int this_irq, void *dev_id)
{
	struct i2c_algo_iop3xx_data *iop3xx_adap = dev_id;
	u32 sr = __raw_readl(iop3xx_adap->ioaddr + SR_OFFSET);

	if ((sr &= iop3xx_adap->SR_enabled)) {
		__raw_writel(sr, iop3xx_adap->ioaddr + SR_OFFSET);
		iop3xx_adap->SR_received |= sr;
		wake_up_interruptible(&iop3xx_adap->waitq);
	}
	return IRQ_HANDLED;
}

/* check all error conditions, clear them , report most important */
static int
iop3xx_i2c_error(u32 sr)
{
	int rc = 0;

	if ((sr & IOP3XX_ISR_BERRD)) {
		if ( !rc ) rc = -I2C_ERR_BERR;
	}
	if ((sr & IOP3XX_ISR_ALD)) {
		if ( !rc ) rc = -I2C_ERR_ALD;
	}
	return rc;
}

static inline u32
iop3xx_i2c_get_srstat(struct i2c_algo_iop3xx_data *iop3xx_adap)
{
	unsigned long flags;
	u32 sr;

	spin_lock_irqsave(&iop3xx_adap->lock, flags);
	sr = iop3xx_adap->SR_received;
	iop3xx_adap->SR_received = 0;
	spin_unlock_irqrestore(&iop3xx_adap->lock, flags);

	return sr;
}

/*
 * sleep until interrupted, then recover and analyse the SR
 * saved by handler
 */
typedef int (* compare_func)(unsigned test, unsigned mask);
/* returns 1 on correct comparison */

static int
iop3xx_i2c_wait_event(struct i2c_algo_iop3xx_data *iop3xx_adap,
			  unsigned flags, unsigned* status,
			  compare_func compare)
{
	unsigned sr = 0;
	int interrupted;
	int done;
	int rc = 0;

	do {
		interrupted = wait_event_interruptible_timeout (
			iop3xx_adap->waitq,
			(done = compare( sr = iop3xx_i2c_get_srstat(iop3xx_adap) ,flags )),
			1 * HZ
			);
		if ((rc = iop3xx_i2c_error(sr)) < 0) {
			*status = sr;
			return rc;
		} else if (!interrupted) {
			*status = sr;
			return -ETIMEDOUT;
		}
	} while(!done);

	*status = sr;

	return 0;
}

/*
 * Concrete compare_funcs
 */
static int
all_bits_clear(unsigned test, unsigned mask)
{
	return (test & mask) == 0;
}

static int
any_bits_set(unsigned test, unsigned mask)
{
	return (test & mask) != 0;
}

static int
iop3xx_i2c_wait_tx_done(struct i2c_algo_iop3xx_data *iop3xx_adap, int *status)
{
	return iop3xx_i2c_wait_event(
		iop3xx_adap,
	        IOP3XX_ISR_TXEMPTY | IOP3XX_ISR_ALD | IOP3XX_ISR_BERRD,
		status, any_bits_set);
}

static int
iop3xx_i2c_wait_rx_done(struct i2c_algo_iop3xx_data *iop3xx_adap, int *status)
{
	return iop3xx_i2c_wait_event(
		iop3xx_adap,
		IOP3XX_ISR_RXFULL | IOP3XX_ISR_ALD | IOP3XX_ISR_BERRD,
		status,	any_bits_set);
}

static int
iop3xx_i2c_wait_idle(struct i2c_algo_iop3xx_data *iop3xx_adap, int *status)
{
	return iop3xx_i2c_wait_event(
		iop3xx_adap, IOP3XX_ISR_UNITBUSY, status, all_bits_clear);
}

static int
iop3xx_i2c_send_target_addr(struct i2c_algo_iop3xx_data *iop3xx_adap,
				struct i2c_msg* msg)
{
	unsigned long cr = __raw_readl(iop3xx_adap->ioaddr + CR_OFFSET);
	int status;
	int rc;

	/* avoid writing to my slave address (hangs on 80331),
	 * forbidden in Intel developer manual
	 */
	if (msg->addr == MYSAR) {
		return -EBUSY;
	}

	__raw_writel(iic_cook_addr(msg), iop3xx_adap->ioaddr + DBR_OFFSET);

	cr &= ~(IOP3XX_ICR_MSTOP | IOP3XX_ICR_NACK);
	cr |= IOP3XX_ICR_MSTART | IOP3XX_ICR_TBYTE;

	__raw_writel(cr, iop3xx_adap->ioaddr + CR_OFFSET);
	rc = iop3xx_i2c_wait_tx_done(iop3xx_adap, &status);

	return rc;
}

static int
iop3xx_i2c_write_byte(struct i2c_algo_iop3xx_data *iop3xx_adap, char byte,
				int stop)
{
	unsigned long cr = __raw_readl(iop3xx_adap->ioaddr + CR_OFFSET);
	int status;
	int rc = 0;

	__raw_writel(byte, iop3xx_adap->ioaddr + DBR_OFFSET);
	cr &= ~IOP3XX_ICR_MSTART;
	if (stop) {
		cr |= IOP3XX_ICR_MSTOP;
	} else {
		cr &= ~IOP3XX_ICR_MSTOP;
	}
	cr |= IOP3XX_ICR_TBYTE;
	__raw_writel(cr, iop3xx_adap->ioaddr + CR_OFFSET);
	rc = iop3xx_i2c_wait_tx_done(iop3xx_adap, &status);

	return rc;
}

static int
iop3xx_i2c_read_byte(struct i2c_algo_iop3xx_data *iop3xx_adap, char* byte,
				int stop)
{
	unsigned long cr = __raw_readl(iop3xx_adap->ioaddr + CR_OFFSET);
	int status;
	int rc = 0;

	cr &= ~IOP3XX_ICR_MSTART;

	if (stop) {
		cr |= IOP3XX_ICR_MSTOP | IOP3XX_ICR_NACK;
	} else {
		cr &= ~(IOP3XX_ICR_MSTOP | IOP3XX_ICR_NACK);
	}
	cr |= IOP3XX_ICR_TBYTE;
	__raw_writel(cr, iop3xx_adap->ioaddr + CR_OFFSET);

	rc = iop3xx_i2c_wait_rx_done(iop3xx_adap, &status);

	*byte = __raw_readl(iop3xx_adap->ioaddr + DBR_OFFSET);

	return rc;
}

static int
iop3xx_i2c_writebytes(struct i2c_adapter *i2c_adap, const char *buf, int count)
{
	struct i2c_algo_iop3xx_data *iop3xx_adap = i2c_adap->algo_data;
	int ii;
	int rc = 0;

	for (ii = 0; rc == 0 && ii != count; ++ii)
		rc = iop3xx_i2c_write_byte(iop3xx_adap, buf[ii], ii==count-1);
	return rc;
}

static int
iop3xx_i2c_readbytes(struct i2c_adapter *i2c_adap, char *buf, int count)
{
	struct i2c_algo_iop3xx_data *iop3xx_adap = i2c_adap->algo_data;
	int ii;
	int rc = 0;

	for (ii = 0; rc == 0 && ii != count; ++ii)
		rc = iop3xx_i2c_read_byte(iop3xx_adap, &buf[ii], ii==count-1);

	return rc;
}

/*
 * Description:  This function implements combined transactions.  Combined
 * transactions consist of combinations of reading and writing blocks of data.
 * FROM THE SAME ADDRESS
 * Each transfer (i.e. a read or a write) is separated by a repeated start
 * condition.
 */
static int
iop3xx_i2c_handle_msg(struct i2c_adapter *i2c_adap, struct i2c_msg* pmsg)
{
	struct i2c_algo_iop3xx_data *iop3xx_adap = i2c_adap->algo_data;
	int rc;

	rc = iop3xx_i2c_send_target_addr(iop3xx_adap, pmsg);
	if (rc < 0) {
		return rc;
	}

	if ((pmsg->flags&I2C_M_RD)) {
		return iop3xx_i2c_readbytes(i2c_adap, pmsg->buf, pmsg->len);
	} else {
		return iop3xx_i2c_writebytes(i2c_adap, pmsg->buf, pmsg->len);
	}
}

/*
 * master_xfer() - main read/write entry
 */
static int
iop3xx_i2c_master_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
				int num)
{
	struct i2c_algo_iop3xx_data *iop3xx_adap = i2c_adap->algo_data;
	int im = 0;
	int ret = 0;
	int status;

	iop3xx_i2c_wait_idle(iop3xx_adap, &status);
	iop3xx_i2c_reset(iop3xx_adap);
	iop3xx_i2c_enable(iop3xx_adap);

	for (im = 0; ret == 0 && im != num; im++) {
		ret = iop3xx_i2c_handle_msg(i2c_adap, &msgs[im]);
	}

	iop3xx_i2c_transaction_cleanup(iop3xx_adap);

	if(ret)
		return ret;

	return im;
}

static u32
iop3xx_i2c_func(struct i2c_adapter *adap)
{
	return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
}

static const struct i2c_algorithm iop3xx_i2c_algo = {
	.master_xfer	= iop3xx_i2c_master_xfer,
	.functionality	= iop3xx_i2c_func,
};

static int
iop3xx_i2c_remove(struct platform_device *pdev)
{
	struct i2c_adapter *padapter = platform_get_drvdata(pdev);
	struct i2c_algo_iop3xx_data *adapter_data =
		(struct i2c_algo_iop3xx_data *)padapter->algo_data;
	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	unsigned long cr = __raw_readl(adapter_data->ioaddr + CR_OFFSET);

	/*
	 * Disable the actual HW unit
	 */
	cr &= ~(IOP3XX_ICR_ALD_IE | IOP3XX_ICR_BERR_IE |
		IOP3XX_ICR_RXFULL_IE | IOP3XX_ICR_TXEMPTY_IE);
	__raw_writel(cr, adapter_data->ioaddr + CR_OFFSET);

	iounmap(adapter_data->ioaddr);
	release_mem_region(res->start, IOP3XX_I2C_IO_SIZE);
	kfree(adapter_data);
	kfree(padapter);

	return 0;
}

static int
iop3xx_i2c_probe(struct platform_device *pdev)
{
	struct resource *res;
	int ret, irq;
	struct i2c_adapter *new_adapter;
	struct i2c_algo_iop3xx_data *adapter_data;

	new_adapter = kzalloc(sizeof(struct i2c_adapter), GFP_KERNEL);
	if (!new_adapter) {
		ret = -ENOMEM;
		goto out;
	}

	adapter_data = kzalloc(sizeof(struct i2c_algo_iop3xx_data), GFP_KERNEL);
	if (!adapter_data) {
		ret = -ENOMEM;
		goto free_adapter;
	}

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		ret = -ENODEV;
		goto free_both;
	}

	if (!request_mem_region(res->start, IOP3XX_I2C_IO_SIZE, pdev->name)) {
		ret = -EBUSY;
		goto free_both;
	}

	/* set the adapter enumeration # */
	adapter_data->id = i2c_id++;

	adapter_data->ioaddr = ioremap(res->start, IOP3XX_I2C_IO_SIZE);
	if (!adapter_data->ioaddr) {
		ret = -ENOMEM;
		goto release_region;
	}

	irq = platform_get_irq(pdev, 0);
	if (irq < 0) {
		ret = -ENXIO;
		goto unmap;
	}
	ret = request_irq(irq, iop3xx_i2c_irq_handler, 0,
				pdev->name, adapter_data);

	if (ret) {
		ret = -EIO;
		goto unmap;
	}

	memcpy(new_adapter->name, pdev->name, strlen(pdev->name));
	new_adapter->owner = THIS_MODULE;
	new_adapter->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
	new_adapter->dev.parent = &pdev->dev;
	new_adapter->nr = pdev->id;

	/*
	 * Default values...should these come in from board code?
	 */
	new_adapter->timeout = HZ;
	new_adapter->algo = &iop3xx_i2c_algo;

	init_waitqueue_head(&adapter_data->waitq);
	spin_lock_init(&adapter_data->lock);

	iop3xx_i2c_reset(adapter_data);
	iop3xx_i2c_enable(adapter_data);

	platform_set_drvdata(pdev, new_adapter);
	new_adapter->algo_data = adapter_data;

	i2c_add_numbered_adapter(new_adapter);

	return 0;

unmap:
	iounmap(adapter_data->ioaddr);

release_region:
	release_mem_region(res->start, IOP3XX_I2C_IO_SIZE);

free_both:
	kfree(adapter_data);

free_adapter:
	kfree(new_adapter);

out:
	return ret;
}


static struct platform_driver iop3xx_i2c_driver = {
	.probe		= iop3xx_i2c_probe,
	.remove		= iop3xx_i2c_remove,
	.driver		= {
		.name	= "IOP3xx-I2C",
	},
};

module_platform_driver(iop3xx_i2c_driver);

MODULE_AUTHOR("D-TACQ Solutions Ltd <www.d-tacq.com>");
MODULE_DESCRIPTION("IOP3xx iic algorithm and driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:IOP3xx-I2C");