drivers/memory/fsl_ifc.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Copyright 2011 Freescale Semiconductor, Inc
  *
  * Freescale Integrated Flash Controller
  *
  * Author: Dipen Dudhat <Dipen.Dudhat@freescale.com>
  */
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/compiler.h>
 #include <linux/sched.h>
 #include <linux/spinlock.h>
 #include <linux/types.h>
 #include <linux/slab.h>
 #include <linux/io.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/fsl_ifc.h>
 #include <linux/irqdomain.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>

 struct fsl_ifc_ctrl *fsl_ifc_ctrl_dev;
 EXPORT_SYMBOL(fsl_ifc_ctrl_dev);

 /*
  * convert_ifc_address - convert the base address
  * @addr_base:	base address of the memory bank
  */
 unsigned int convert_ifc_address(phys_addr_t addr_base)
 {
 	return addr_base & CSPR_BA;
 }
 EXPORT_SYMBOL(convert_ifc_address);

 /*
  * fsl_ifc_find - find IFC bank
  * @addr_base:	base address of the memory bank
  *
  * This function walks IFC banks comparing "Base address" field of the CSPR
  * registers with the supplied addr_base argument. When bases match this
  * function returns bank number (starting with 0), otherwise it returns
  * appropriate errno value.
  */
 int fsl_ifc_find(phys_addr_t addr_base)
 {
 	int i = 0;

 	if (!fsl_ifc_ctrl_dev || !fsl_ifc_ctrl_dev->gregs)
 		return -ENODEV;

 	for (i = 0; i < fsl_ifc_ctrl_dev->banks; i++) {
 		u32 cspr = ifc_in32(&fsl_ifc_ctrl_dev->gregs->cspr_cs[i].cspr);

 		if (cspr & CSPR_V && (cspr & CSPR_BA) ==
 				convert_ifc_address(addr_base))
 			return i;
 	}

 	return -ENOENT;
 }
 EXPORT_SYMBOL(fsl_ifc_find);

 static int fsl_ifc_ctrl_init(struct fsl_ifc_ctrl *ctrl)
 {
 	struct fsl_ifc_global __iomem *ifc = ctrl->gregs;

 	/*
 	 * Clear all the common status and event registers
 	 */
 	if (ifc_in32(&ifc->cm_evter_stat) & IFC_CM_EVTER_STAT_CSER)
 		ifc_out32(IFC_CM_EVTER_STAT_CSER, &ifc->cm_evter_stat);

 	/* enable all error and events */
 	ifc_out32(IFC_CM_EVTER_EN_CSEREN, &ifc->cm_evter_en);

 	/* enable all error and event interrupts */
 	ifc_out32(IFC_CM_EVTER_INTR_EN_CSERIREN, &ifc->cm_evter_intr_en);
 	ifc_out32(0x0, &ifc->cm_erattr0);
 	ifc_out32(0x0, &ifc->cm_erattr1);

 	return 0;
 }

 static int fsl_ifc_ctrl_remove(struct platform_device *dev)
 {
 	struct fsl_ifc_ctrl *ctrl = dev_get_drvdata(&dev->dev);

 	of_platform_depopulate(&dev->dev);
 	free_irq(ctrl->nand_irq, ctrl);
 	free_irq(ctrl->irq, ctrl);

 	irq_dispose_mapping(ctrl->nand_irq);
 	irq_dispose_mapping(ctrl->irq);

 	iounmap(ctrl->gregs);

 	dev_set_drvdata(&dev->dev, NULL);

 	return 0;
 }

 /*
  * NAND events are split between an operational interrupt which only
  * receives OPC, and an error interrupt that receives everything else,
  * including non-NAND errors.  Whichever interrupt gets to it first
  * records the status and wakes the wait queue.
  */
 static DEFINE_SPINLOCK(nand_irq_lock);

 static u32 check_nand_stat(struct fsl_ifc_ctrl *ctrl)
 {
 	struct fsl_ifc_runtime __iomem *ifc = ctrl->rregs;
 	unsigned long flags;
 	u32 stat;

 	spin_lock_irqsave(&nand_irq_lock, flags);

 	stat = ifc_in32(&ifc->ifc_nand.nand_evter_stat);
 	if (stat) {
 		ifc_out32(stat, &ifc->ifc_nand.nand_evter_stat);
 		ctrl->nand_stat = stat;
 		wake_up(&ctrl->nand_wait);
 	}

 	spin_unlock_irqrestore(&nand_irq_lock, flags);

 	return stat;
 }

 static irqreturn_t fsl_ifc_nand_irq(int irqno, void *data)
 {
 	struct fsl_ifc_ctrl *ctrl = data;

 	if (check_nand_stat(ctrl))
 		return IRQ_HANDLED;

 	return IRQ_NONE;
 }

 /*
  * NOTE: This interrupt is used to report ifc events of various kinds,
  * such as transaction errors on the chipselects.
  */
 static irqreturn_t fsl_ifc_ctrl_irq(int irqno, void *data)
 {
 	struct fsl_ifc_ctrl *ctrl = data;
 	struct fsl_ifc_global __iomem *ifc = ctrl->gregs;
 	u32 err_axiid, err_srcid, status, cs_err, err_addr;
 	irqreturn_t ret = IRQ_NONE;

 	/* read for chip select error */
 	cs_err = ifc_in32(&ifc->cm_evter_stat);
 	if (cs_err) {
 		dev_err(ctrl->dev, "transaction sent to IFC is not mapped to any memory bank 0x%08X\n",
 			cs_err);
 		/* clear the chip select error */
 		ifc_out32(IFC_CM_EVTER_STAT_CSER, &ifc->cm_evter_stat);

 		/* read error attribute registers print the error information */
 		status = ifc_in32(&ifc->cm_erattr0);
 		err_addr = ifc_in32(&ifc->cm_erattr1);

 		if (status & IFC_CM_ERATTR0_ERTYP_READ)
 			dev_err(ctrl->dev, "Read transaction error CM_ERATTR0 0x%08X\n",
 				status);
 		else
 			dev_err(ctrl->dev, "Write transaction error CM_ERATTR0 0x%08X\n",
 				status);

 		err_axiid = (status & IFC_CM_ERATTR0_ERAID) >>
 					IFC_CM_ERATTR0_ERAID_SHIFT;
 		dev_err(ctrl->dev, "AXI ID of the error transaction 0x%08X\n",
 			err_axiid);

 		err_srcid = (status & IFC_CM_ERATTR0_ESRCID) >>
 					IFC_CM_ERATTR0_ESRCID_SHIFT;
 		dev_err(ctrl->dev, "SRC ID of the error transaction 0x%08X\n",
 			err_srcid);

 		dev_err(ctrl->dev, "Transaction Address corresponding to error ERADDR 0x%08X\n",
 			err_addr);

 		ret = IRQ_HANDLED;
 	}

 	if (check_nand_stat(ctrl))
 		ret = IRQ_HANDLED;

 	return ret;
 }

 /*
  * fsl_ifc_ctrl_probe
  *
  * called by device layer when it finds a device matching
  * one our driver can handled. This code allocates all of
  * the resources needed for the controller only.  The
  * resources for the NAND banks themselves are allocated
  * in the chip probe function.
  */
 static int fsl_ifc_ctrl_probe(struct platform_device *dev)
 {
 	int ret = 0;
 	int version, banks;
 	void __iomem *addr;

 	dev_info(&dev->dev, "Freescale Integrated Flash Controller\n");

 	fsl_ifc_ctrl_dev = devm_kzalloc(&dev->dev, sizeof(*fsl_ifc_ctrl_dev),
 					GFP_KERNEL);
 	if (!fsl_ifc_ctrl_dev)
 		return -ENOMEM;

 	dev_set_drvdata(&dev->dev, fsl_ifc_ctrl_dev);

 	/* IOMAP the entire IFC region */
 	fsl_ifc_ctrl_dev->gregs = of_iomap(dev->dev.of_node, 0);
 	if (!fsl_ifc_ctrl_dev->gregs) {
 		dev_err(&dev->dev, "failed to get memory region\n");
 		return -ENODEV;
 	}

 	if (of_property_read_bool(dev->dev.of_node, "little-endian")) {
 		fsl_ifc_ctrl_dev->little_endian = true;
 		dev_dbg(&dev->dev, "IFC REGISTERS are LITTLE endian\n");
 	} else {
 		fsl_ifc_ctrl_dev->little_endian = false;
 		dev_dbg(&dev->dev, "IFC REGISTERS are BIG endian\n");
 	}

 	version = ifc_in32(&fsl_ifc_ctrl_dev->gregs->ifc_rev) &
 			FSL_IFC_VERSION_MASK;

 	banks = (version == FSL_IFC_VERSION_1_0_0) ? 4 : 8;
 	dev_info(&dev->dev, "IFC version %d.%d, %d banks\n",
 		version >> 24, (version >> 16) & 0xf, banks);

 	fsl_ifc_ctrl_dev->version = version;
 	fsl_ifc_ctrl_dev->banks = banks;

 	addr = fsl_ifc_ctrl_dev->gregs;
 	if (version >= FSL_IFC_VERSION_2_0_0)
 		addr += PGOFFSET_64K;
 	else
 		addr += PGOFFSET_4K;
 	fsl_ifc_ctrl_dev->rregs = addr;

 	/* get the Controller level irq */
 	fsl_ifc_ctrl_dev->irq = irq_of_parse_and_map(dev->dev.of_node, 0);
 	if (fsl_ifc_ctrl_dev->irq == 0) {
 		dev_err(&dev->dev, "failed to get irq resource for IFC\n");
 		ret = -ENODEV;
 		goto err;
 	}

 	/* get the nand machine irq */
 	fsl_ifc_ctrl_dev->nand_irq =
 			irq_of_parse_and_map(dev->dev.of_node, 1);

 	fsl_ifc_ctrl_dev->dev = &dev->dev;

 	ret = fsl_ifc_ctrl_init(fsl_ifc_ctrl_dev);
 	if (ret < 0)
 		goto err_unmap_nandirq;

 	init_waitqueue_head(&fsl_ifc_ctrl_dev->nand_wait);

 	ret = request_irq(fsl_ifc_ctrl_dev->irq, fsl_ifc_ctrl_irq, IRQF_SHARED,
 			  "fsl-ifc", fsl_ifc_ctrl_dev);
 	if (ret != 0) {
 		dev_err(&dev->dev, "failed to install irq (%d)\n",
 			fsl_ifc_ctrl_dev->irq);
 		goto err_unmap_nandirq;
 	}

 	if (fsl_ifc_ctrl_dev->nand_irq) {
 		ret = request_irq(fsl_ifc_ctrl_dev->nand_irq, fsl_ifc_nand_irq,
 				0, "fsl-ifc-nand", fsl_ifc_ctrl_dev);
 		if (ret != 0) {
 			dev_err(&dev->dev, "failed to install irq (%d)\n",
 				fsl_ifc_ctrl_dev->nand_irq);
 			goto err_free_irq;
 		}
 	}

 	/* legacy dts may still use "simple-bus" compatible */
 	ret = of_platform_default_populate(dev->dev.of_node, NULL, &dev->dev);
 	if (ret)
 		goto err_free_nandirq;

 	return 0;

 err_free_nandirq:
 	free_irq(fsl_ifc_ctrl_dev->nand_irq, fsl_ifc_ctrl_dev);
 err_free_irq:
 	free_irq(fsl_ifc_ctrl_dev->irq, fsl_ifc_ctrl_dev);
 err_unmap_nandirq:
 	irq_dispose_mapping(fsl_ifc_ctrl_dev->nand_irq);
 	irq_dispose_mapping(fsl_ifc_ctrl_dev->irq);
 err:
 	iounmap(fsl_ifc_ctrl_dev->gregs);
 	return ret;
 }

 static const struct of_device_id fsl_ifc_match[] = {
 	{
 		.compatible = "fsl,ifc",
 	},
 	{},
 };

 static struct platform_driver fsl_ifc_ctrl_driver = {
 	.driver = {
 		.name	= "fsl-ifc",
 		.of_match_table = fsl_ifc_match,
 	},
 	.probe       = fsl_ifc_ctrl_probe,
 	.remove      = fsl_ifc_ctrl_remove,
 };

 static int __init fsl_ifc_init(void)
 {
 	return platform_driver_register(&fsl_ifc_ctrl_driver);
 }
 subsys_initcall(fsl_ifc_init);

 MODULE_AUTHOR("Freescale Semiconductor");
 MODULE_DESCRIPTION("Freescale Integrated Flash Controller driver");
	// SPDX-License-Identifier: GPL-2.0-or-later
	/*
	* Copyright 2011 Freescale Semiconductor, Inc
	*
	* Freescale Integrated Flash Controller
	*
	* Author: Dipen Dudhat <Dipen.Dudhat@freescale.com>
	*/
	#include <linux/module.h>
	#include <linux/kernel.h>
	#include <linux/compiler.h>
	#include <linux/sched.h>
	#include <linux/spinlock.h>
	#include <linux/types.h>
	#include <linux/slab.h>
	#include <linux/io.h>
	#include <linux/of.h>
	#include <linux/of_device.h>
	#include <linux/platform_device.h>
	#include <linux/fsl_ifc.h>
	#include <linux/irqdomain.h>
	#include <linux/of_address.h>
	#include <linux/of_irq.h>

	struct fsl_ifc_ctrl *fsl_ifc_ctrl_dev;
	EXPORT_SYMBOL(fsl_ifc_ctrl_dev);

	/*
	* convert_ifc_address - convert the base address
	* @addr_base: base address of the memory bank
	*/
	unsigned int convert_ifc_address(phys_addr_t addr_base)
	{
	return addr_base & CSPR_BA;
	}
	EXPORT_SYMBOL(convert_ifc_address);

	/*
	* fsl_ifc_find - find IFC bank
	* @addr_base: base address of the memory bank
	*
	* This function walks IFC banks comparing "Base address" field of the CSPR
	* registers with the supplied addr_base argument. When bases match this
	* function returns bank number (starting with 0), otherwise it returns
	* appropriate errno value.
	*/
	int fsl_ifc_find(phys_addr_t addr_base)
	{
	int i = 0;

	if (!fsl_ifc_ctrl_dev \|\| !fsl_ifc_ctrl_dev->gregs)
	return -ENODEV;

	for (i = 0; i < fsl_ifc_ctrl_dev->banks; i++) {
	u32 cspr = ifc_in32(&fsl_ifc_ctrl_dev->gregs->cspr_cs[i].cspr);

	if (cspr & CSPR_V && (cspr & CSPR_BA) ==
	convert_ifc_address(addr_base))
	return i;
	}

	return -ENOENT;
	}
	EXPORT_SYMBOL(fsl_ifc_find);

	static int fsl_ifc_ctrl_init(struct fsl_ifc_ctrl *ctrl)
	{
	struct fsl_ifc_global __iomem *ifc = ctrl->gregs;

	/*
	* Clear all the common status and event registers
	*/
	if (ifc_in32(&ifc->cm_evter_stat) & IFC_CM_EVTER_STAT_CSER)
	ifc_out32(IFC_CM_EVTER_STAT_CSER, &ifc->cm_evter_stat);

	/* enable all error and events */
	ifc_out32(IFC_CM_EVTER_EN_CSEREN, &ifc->cm_evter_en);

	/* enable all error and event interrupts */
	ifc_out32(IFC_CM_EVTER_INTR_EN_CSERIREN, &ifc->cm_evter_intr_en);
	ifc_out32(0x0, &ifc->cm_erattr0);
	ifc_out32(0x0, &ifc->cm_erattr1);

	return 0;
	}

	static int fsl_ifc_ctrl_remove(struct platform_device *dev)
	{
	struct fsl_ifc_ctrl *ctrl = dev_get_drvdata(&dev->dev);

	of_platform_depopulate(&dev->dev);
	free_irq(ctrl->nand_irq, ctrl);
	free_irq(ctrl->irq, ctrl);

	irq_dispose_mapping(ctrl->nand_irq);
	irq_dispose_mapping(ctrl->irq);

	iounmap(ctrl->gregs);

	dev_set_drvdata(&dev->dev, NULL);

	return 0;
	}

	/*
	* NAND events are split between an operational interrupt which only
	* receives OPC, and an error interrupt that receives everything else,
	* including non-NAND errors. Whichever interrupt gets to it first
	* records the status and wakes the wait queue.
	*/
	static DEFINE_SPINLOCK(nand_irq_lock);

	static u32 check_nand_stat(struct fsl_ifc_ctrl *ctrl)
	{
	struct fsl_ifc_runtime __iomem *ifc = ctrl->rregs;
	unsigned long flags;
	u32 stat;

	spin_lock_irqsave(&nand_irq_lock, flags);

	stat = ifc_in32(&ifc->ifc_nand.nand_evter_stat);
	if (stat) {
	ifc_out32(stat, &ifc->ifc_nand.nand_evter_stat);
	ctrl->nand_stat = stat;
	wake_up(&ctrl->nand_wait);
	}

	spin_unlock_irqrestore(&nand_irq_lock, flags);

	return stat;
	}

	static irqreturn_t fsl_ifc_nand_irq(int irqno, void *data)
	{
	struct fsl_ifc_ctrl *ctrl = data;

	if (check_nand_stat(ctrl))
	return IRQ_HANDLED;

	return IRQ_NONE;
	}

	/*
	* NOTE: This interrupt is used to report ifc events of various kinds,
	* such as transaction errors on the chipselects.
	*/
	static irqreturn_t fsl_ifc_ctrl_irq(int irqno, void *data)
	{
	struct fsl_ifc_ctrl *ctrl = data;
	struct fsl_ifc_global __iomem *ifc = ctrl->gregs;
	u32 err_axiid, err_srcid, status, cs_err, err_addr;
	irqreturn_t ret = IRQ_NONE;

	/* read for chip select error */
	cs_err = ifc_in32(&ifc->cm_evter_stat);
	if (cs_err) {
	dev_err(ctrl->dev, "transaction sent to IFC is not mapped to any memory bank 0x%08X\n",
	cs_err);
	/* clear the chip select error */
	ifc_out32(IFC_CM_EVTER_STAT_CSER, &ifc->cm_evter_stat);

	/* read error attribute registers print the error information */
	status = ifc_in32(&ifc->cm_erattr0);
	err_addr = ifc_in32(&ifc->cm_erattr1);

	if (status & IFC_CM_ERATTR0_ERTYP_READ)
	dev_err(ctrl->dev, "Read transaction error CM_ERATTR0 0x%08X\n",
	status);
	else
	dev_err(ctrl->dev, "Write transaction error CM_ERATTR0 0x%08X\n",
	status);

	err_axiid = (status & IFC_CM_ERATTR0_ERAID) >>
	IFC_CM_ERATTR0_ERAID_SHIFT;
	dev_err(ctrl->dev, "AXI ID of the error transaction 0x%08X\n",
	err_axiid);

	err_srcid = (status & IFC_CM_ERATTR0_ESRCID) >>
	IFC_CM_ERATTR0_ESRCID_SHIFT;
	dev_err(ctrl->dev, "SRC ID of the error transaction 0x%08X\n",
	err_srcid);

	dev_err(ctrl->dev, "Transaction Address corresponding to error ERADDR 0x%08X\n",
	err_addr);

	ret = IRQ_HANDLED;
	}

	if (check_nand_stat(ctrl))
	ret = IRQ_HANDLED;

	return ret;
	}

	/*
	* fsl_ifc_ctrl_probe
	*
	* called by device layer when it finds a device matching
	* one our driver can handled. This code allocates all of
	* the resources needed for the controller only. The
	* resources for the NAND banks themselves are allocated
	* in the chip probe function.
	*/
	static int fsl_ifc_ctrl_probe(struct platform_device *dev)
	{
	int ret = 0;
	int version, banks;
	void __iomem *addr;

	dev_info(&dev->dev, "Freescale Integrated Flash Controller\n");

	fsl_ifc_ctrl_dev = devm_kzalloc(&dev->dev, sizeof(*fsl_ifc_ctrl_dev),
	GFP_KERNEL);
	if (!fsl_ifc_ctrl_dev)
	return -ENOMEM;

	dev_set_drvdata(&dev->dev, fsl_ifc_ctrl_dev);

	/* IOMAP the entire IFC region */
	fsl_ifc_ctrl_dev->gregs = of_iomap(dev->dev.of_node, 0);
	if (!fsl_ifc_ctrl_dev->gregs) {
	dev_err(&dev->dev, "failed to get memory region\n");
	return -ENODEV;
	}

	if (of_property_read_bool(dev->dev.of_node, "little-endian")) {
	fsl_ifc_ctrl_dev->little_endian = true;
	dev_dbg(&dev->dev, "IFC REGISTERS are LITTLE endian\n");
	} else {
	fsl_ifc_ctrl_dev->little_endian = false;
	dev_dbg(&dev->dev, "IFC REGISTERS are BIG endian\n");
	}

	version = ifc_in32(&fsl_ifc_ctrl_dev->gregs->ifc_rev) &
	FSL_IFC_VERSION_MASK;

	banks = (version == FSL_IFC_VERSION_1_0_0) ? 4 : 8;
	dev_info(&dev->dev, "IFC version %d.%d, %d banks\n",
	version >> 24, (version >> 16) & 0xf, banks);

	fsl_ifc_ctrl_dev->version = version;
	fsl_ifc_ctrl_dev->banks = banks;

	addr = fsl_ifc_ctrl_dev->gregs;
	if (version >= FSL_IFC_VERSION_2_0_0)
	addr += PGOFFSET_64K;
	else
	addr += PGOFFSET_4K;
	fsl_ifc_ctrl_dev->rregs = addr;

	/* get the Controller level irq */
	fsl_ifc_ctrl_dev->irq = irq_of_parse_and_map(dev->dev.of_node, 0);
	if (fsl_ifc_ctrl_dev->irq == 0) {
	dev_err(&dev->dev, "failed to get irq resource for IFC\n");
	ret = -ENODEV;
	goto err;
	}

	/* get the nand machine irq */
	fsl_ifc_ctrl_dev->nand_irq =
	irq_of_parse_and_map(dev->dev.of_node, 1);

	fsl_ifc_ctrl_dev->dev = &dev->dev;

	ret = fsl_ifc_ctrl_init(fsl_ifc_ctrl_dev);
	if (ret < 0)
	goto err_unmap_nandirq;

	init_waitqueue_head(&fsl_ifc_ctrl_dev->nand_wait);

	ret = request_irq(fsl_ifc_ctrl_dev->irq, fsl_ifc_ctrl_irq, IRQF_SHARED,
	"fsl-ifc", fsl_ifc_ctrl_dev);
	if (ret != 0) {
	dev_err(&dev->dev, "failed to install irq (%d)\n",
	fsl_ifc_ctrl_dev->irq);
	goto err_unmap_nandirq;
	}

	if (fsl_ifc_ctrl_dev->nand_irq) {
	ret = request_irq(fsl_ifc_ctrl_dev->nand_irq, fsl_ifc_nand_irq,
	0, "fsl-ifc-nand", fsl_ifc_ctrl_dev);
	if (ret != 0) {
	dev_err(&dev->dev, "failed to install irq (%d)\n",
	fsl_ifc_ctrl_dev->nand_irq);
	goto err_free_irq;
	}
	}

	/* legacy dts may still use "simple-bus" compatible */
	ret = of_platform_default_populate(dev->dev.of_node, NULL, &dev->dev);
	if (ret)
	goto err_free_nandirq;

	return 0;

	err_free_nandirq:
	free_irq(fsl_ifc_ctrl_dev->nand_irq, fsl_ifc_ctrl_dev);
	err_free_irq:
	free_irq(fsl_ifc_ctrl_dev->irq, fsl_ifc_ctrl_dev);
	err_unmap_nandirq:
	irq_dispose_mapping(fsl_ifc_ctrl_dev->nand_irq);
	irq_dispose_mapping(fsl_ifc_ctrl_dev->irq);
	err:
	iounmap(fsl_ifc_ctrl_dev->gregs);
	return ret;
	}

	static const struct of_device_id fsl_ifc_match[] = {
	{
	.compatible = "fsl,ifc",
	},
	{},
	};

	static struct platform_driver fsl_ifc_ctrl_driver = {
	.driver = {
	.name = "fsl-ifc",
	.of_match_table = fsl_ifc_match,
	},
	.probe = fsl_ifc_ctrl_probe,
	.remove = fsl_ifc_ctrl_remove,
	};

	static int __init fsl_ifc_init(void)
	{
	return platform_driver_register(&fsl_ifc_ctrl_driver);
	}
	subsys_initcall(fsl_ifc_init);

	MODULE_AUTHOR("Freescale Semiconductor");
	MODULE_DESCRIPTION("Freescale Integrated Flash Controller driver");