[deliverable/linux.git] / drivers / ata / pata_platform.c

/*
 * Generic platform device PATA driver
 *
 * Copyright (C) 2006 - 2007  Paul Mundt
 *
 * Based on pata_pcmcia:
 *
 *   Copyright 2005-2006 Red Hat Inc <alan@redhat.com>, all rights reserved.
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <scsi/scsi_host.h>
#include <linux/ata.h>
#include <linux/libata.h>
#include <linux/platform_device.h>
#include <linux/ata_platform.h>

#define DRV_NAME "pata_platform"
#define DRV_VERSION "1.2"

static int pio_mask = 1;

/*
 * Provide our own set_mode() as we don't want to change anything that has
 * already been configured..
 */
static int pata_platform_set_mode(struct ata_link *link, struct ata_device **unused)
{
	struct ata_device *dev;

	ata_link_for_each_dev(dev, link) {
		if (ata_dev_enabled(dev)) {
			/* We don't really care */
			dev->pio_mode = dev->xfer_mode = XFER_PIO_0;
			dev->xfer_shift = ATA_SHIFT_PIO;
			dev->flags |= ATA_DFLAG_PIO;
			ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
		}
	}
	return 0;
}

static int ata_dummy_ret0(struct ata_port *ap)	{ return 0; }

static struct scsi_host_template pata_platform_sht = {
	.module			= THIS_MODULE,
	.name			= DRV_NAME,
	.ioctl			= ata_scsi_ioctl,
	.queuecommand		= ata_scsi_queuecmd,
	.can_queue		= ATA_DEF_QUEUE,
	.this_id		= ATA_SHT_THIS_ID,
	.sg_tablesize		= LIBATA_MAX_PRD,
	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,
	.emulated		= ATA_SHT_EMULATED,
	.use_clustering		= ATA_SHT_USE_CLUSTERING,
	.proc_name		= DRV_NAME,
	.dma_boundary		= ATA_DMA_BOUNDARY,
	.slave_configure	= ata_scsi_slave_config,
	.slave_destroy		= ata_scsi_slave_destroy,
	.bios_param		= ata_std_bios_param,
};

static struct ata_port_operations pata_platform_port_ops = {
	.set_mode		= pata_platform_set_mode,

	.tf_load		= ata_tf_load,
	.tf_read		= ata_tf_read,
	.check_status		= ata_check_status,
	.exec_command		= ata_exec_command,
	.dev_select		= ata_std_dev_select,

	.freeze			= ata_bmdma_freeze,
	.thaw			= ata_bmdma_thaw,
	.error_handler		= ata_bmdma_error_handler,
	.post_internal_cmd	= ata_bmdma_post_internal_cmd,
	.cable_detect		= ata_cable_unknown,

	.qc_prep		= ata_qc_prep,
	.qc_issue		= ata_qc_issue_prot,

	.data_xfer		= ata_data_xfer_noirq,

	.irq_clear		= ata_bmdma_irq_clear,
	.irq_on			= ata_irq_on,

	.port_start		= ata_dummy_ret0,
};

static void pata_platform_setup_port(struct ata_ioports *ioaddr,
				     unsigned int shift)
{
	/* Fixup the port shift for platforms that need it */
	ioaddr->data_addr	= ioaddr->cmd_addr + (ATA_REG_DATA    << shift);
	ioaddr->error_addr	= ioaddr->cmd_addr + (ATA_REG_ERR     << shift);
	ioaddr->feature_addr	= ioaddr->cmd_addr + (ATA_REG_FEATURE << shift);
	ioaddr->nsect_addr	= ioaddr->cmd_addr + (ATA_REG_NSECT   << shift);
	ioaddr->lbal_addr	= ioaddr->cmd_addr + (ATA_REG_LBAL    << shift);
	ioaddr->lbam_addr	= ioaddr->cmd_addr + (ATA_REG_LBAM    << shift);
	ioaddr->lbah_addr	= ioaddr->cmd_addr + (ATA_REG_LBAH    << shift);
	ioaddr->device_addr	= ioaddr->cmd_addr + (ATA_REG_DEVICE  << shift);
	ioaddr->status_addr	= ioaddr->cmd_addr + (ATA_REG_STATUS  << shift);
	ioaddr->command_addr	= ioaddr->cmd_addr + (ATA_REG_CMD     << shift);
}

/**
 *	__pata_platform_probe		-	attach a platform interface
 *	@dev: device
 *	@io_res: Resource representing I/O base
 *	@ctl_res: Resource representing CTL base
 *	@irq_res: Resource representing IRQ and its flags
 *	@ioport_shift: I/O port shift
 *	@__pio_mask: PIO mask
 *
 *	Register a platform bus IDE interface. Such interfaces are PIO and we
 *	assume do not support IRQ sharing.
 *
 *	Platform devices are expected to contain at least 2 resources per port:
 *
 *		- I/O Base (IORESOURCE_IO or IORESOURCE_MEM)
 *		- CTL Base (IORESOURCE_IO or IORESOURCE_MEM)
 *
 *	and optionally:
 *
 *		- IRQ	   (IORESOURCE_IRQ)
 *
 *	If the base resources are both mem types, the ioremap() is handled
 *	here. For IORESOURCE_IO, it's assumed that there's no remapping
 *	necessary.
 *
 *	If no IRQ resource is present, PIO polling mode is used instead.
 */
int __devinit __pata_platform_probe(struct device *dev,
				    struct resource *io_res,
				    struct resource *ctl_res,
				    struct resource *irq_res,
				    unsigned int ioport_shift,
				    int __pio_mask)
{
	struct ata_host *host;
	struct ata_port *ap;
	unsigned int mmio;
	int irq = 0;
	int irq_flags = 0;

	/*
	 * Check for MMIO
	 */
	mmio = (( io_res->flags == IORESOURCE_MEM) &&
		(ctl_res->flags == IORESOURCE_MEM));

	/*
	 * And the IRQ
	 */
	if (irq_res && irq_res->start > 0) {
		irq = irq_res->start;
		irq_flags = irq_res->flags;
	}

	/*
	 * Now that that's out of the way, wire up the port..
	 */
	host = ata_host_alloc(dev, 1);
	if (!host)
		return -ENOMEM;
	ap = host->ports[0];

	ap->ops = &pata_platform_port_ops;
	ap->pio_mask = __pio_mask;
	ap->flags |= ATA_FLAG_SLAVE_POSS;

	/*
	 * Use polling mode if there's no IRQ
	 */
	if (!irq) {
		ap->flags |= ATA_FLAG_PIO_POLLING;
		ata_port_desc(ap, "no IRQ, using PIO polling");
	}

	/*
	 * Handle the MMIO case
	 */
	if (mmio) {
		ap->ioaddr.cmd_addr = devm_ioremap(dev, io_res->start,
				io_res->end - io_res->start + 1);
		ap->ioaddr.ctl_addr = devm_ioremap(dev, ctl_res->start,
				ctl_res->end - ctl_res->start + 1);
	} else {
		ap->ioaddr.cmd_addr = devm_ioport_map(dev, io_res->start,
				io_res->end - io_res->start + 1);
		ap->ioaddr.ctl_addr = devm_ioport_map(dev, ctl_res->start,
				ctl_res->end - ctl_res->start + 1);
	}
	if (!ap->ioaddr.cmd_addr || !ap->ioaddr.ctl_addr) {
		dev_err(dev, "failed to map IO/CTL base\n");
		return -ENOMEM;
	}

	ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;

	pata_platform_setup_port(&ap->ioaddr, ioport_shift);

	ata_port_desc(ap, "%s cmd 0x%llx ctl 0x%llx", mmio ? "mmio" : "ioport",
		      (unsigned long long)io_res->start,
		      (unsigned long long)ctl_res->start);

	/* activate */
	return ata_host_activate(host, irq, irq ? ata_interrupt : NULL,
				 irq_flags, &pata_platform_sht);
}
EXPORT_SYMBOL_GPL(__pata_platform_probe);

/**
 *	__pata_platform_remove		-	unplug a platform interface
 *	@dev: device
 *
 *	A platform bus ATA device has been unplugged. Perform the needed
 *	cleanup. Also called on module unload for any active devices.
 */
int __devexit __pata_platform_remove(struct device *dev)
{
	struct ata_host *host = dev_get_drvdata(dev);

	ata_host_detach(host);

	return 0;
}
EXPORT_SYMBOL_GPL(__pata_platform_remove);

static int __devinit pata_platform_probe(struct platform_device *pdev)
{
	struct resource *io_res;
	struct resource *ctl_res;
	struct resource *irq_res;
	struct pata_platform_info *pp_info = pdev->dev.platform_data;

	/*
	 * Simple resource validation ..
	 */
	if ((pdev->num_resources != 3) && (pdev->num_resources != 2)) {
		dev_err(&pdev->dev, "invalid number of resources\n");
		return -EINVAL;
	}

	/*
	 * Get the I/O base first
	 */
	io_res = platform_get_resource(pdev, IORESOURCE_IO, 0);
	if (io_res == NULL) {
		io_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
		if (unlikely(io_res == NULL))
			return -EINVAL;
	}

	/*
	 * Then the CTL base
	 */
	ctl_res = platform_get_resource(pdev, IORESOURCE_IO, 1);
	if (ctl_res == NULL) {
		ctl_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
		if (unlikely(ctl_res == NULL))
			return -EINVAL;
	}

	/*
	 * And the IRQ
	 */
	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	if (irq_res)
		irq_res->flags = pp_info ? pp_info->irq_flags : 0;

	return __pata_platform_probe(&pdev->dev, io_res, ctl_res, irq_res,
				     pp_info ? pp_info->ioport_shift : 0,
				     pio_mask);
}

static int __devexit pata_platform_remove(struct platform_device *pdev)
{
	return __pata_platform_remove(&pdev->dev);
}

static struct platform_driver pata_platform_driver = {
	.probe		= pata_platform_probe,
	.remove		= __devexit_p(pata_platform_remove),
	.driver = {
		.name		= DRV_NAME,
		.owner		= THIS_MODULE,
	},
};

static int __init pata_platform_init(void)
{
	return platform_driver_register(&pata_platform_driver);
}

static void __exit pata_platform_exit(void)
{
	platform_driver_unregister(&pata_platform_driver);
}
module_init(pata_platform_init);
module_exit(pata_platform_exit);

module_param(pio_mask, int, 0);

MODULE_AUTHOR("Paul Mundt");
MODULE_DESCRIPTION("low-level driver for platform device ATA");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
Commit	Line	Data
a20c9e82 PM	1	/*
	2	* Generic platform device PATA driver
	3	*
f7fc0ceb	4	* Copyright (C) 2006 - 2007 Paul Mundt
a20c9e82 PM	5	*
	6	* Based on pata_pcmcia:
	7	*
	8	* Copyright 2005-2006 Red Hat Inc <alan@redhat.com>, all rights reserved.
	9	*
	10	* This file is subject to the terms and conditions of the GNU General Public
	11	* License. See the file "COPYING" in the main directory of this archive
	12	* for more details.
	13	*/
	14	#include <linux/kernel.h>
	15	#include <linux/module.h>
	16	#include <linux/init.h>
	17	#include <linux/blkdev.h>
	18	#include <scsi/scsi_host.h>
	19	#include <linux/ata.h>
	20	#include <linux/libata.h>
	21	#include <linux/platform_device.h>
0a87e3e9	22	#include <linux/ata_platform.h>
a20c9e82 PM	23
a20c9e82 PM	24	#define DRV_NAME "pata_platform"
f7fc0ceb	25	#define DRV_VERSION "1.2"
a20c9e82 PM	26
	27	static int pio_mask = 1;
	28
	29	/*
	30	* Provide our own set_mode() as we don't want to change anything that has
	31	* already been configured..
	32	*/
0260731f	33	static int pata_platform_set_mode(struct ata_link link, struct ata_device *unused)
a20c9e82	34	{
f58229f8	35	struct ata_device *dev;
a20c9e82	36
0260731f	37	ata_link_for_each_dev(dev, link) {
a20c9e82 PM	38	if (ata_dev_enabled(dev)) {
	39	/* We don't really care */
	40	dev->pio_mode = dev->xfer_mode = XFER_PIO_0;
	41	dev->xfer_shift = ATA_SHIFT_PIO;
	42	dev->flags \|= ATA_DFLAG_PIO;
e852f705	43	ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
a20c9e82 PM	44	}
a20c9e82 PM	45	}
161c888b	46	return 0;
a20c9e82 PM	47	}
a20c9e82 PM	48
b9a3b4d1 OJ	49	static int ata_dummy_ret0(struct ata_port *ap) { return 0; }
b9a3b4d1 OJ	50
a20c9e82 PM	51	static struct scsi_host_template pata_platform_sht = {
	52	.module = THIS_MODULE,
	53	.name = DRV_NAME,
	54	.ioctl = ata_scsi_ioctl,
	55	.queuecommand = ata_scsi_queuecmd,
	56	.can_queue = ATA_DEF_QUEUE,
	57	.this_id = ATA_SHT_THIS_ID,
	58	.sg_tablesize = LIBATA_MAX_PRD,
a20c9e82 PM	59	.cmd_per_lun = ATA_SHT_CMD_PER_LUN,
	60	.emulated = ATA_SHT_EMULATED,
	61	.use_clustering = ATA_SHT_USE_CLUSTERING,
	62	.proc_name = DRV_NAME,
	63	.dma_boundary = ATA_DMA_BOUNDARY,
	64	.slave_configure = ata_scsi_slave_config,
c972b60b	65	.slave_destroy = ata_scsi_slave_destroy,
a20c9e82 PM	66	.bios_param = ata_std_bios_param,
	67	};
	68
	69	static struct ata_port_operations pata_platform_port_ops = {
	70	.set_mode = pata_platform_set_mode,
	71
a20c9e82 PM	72	.tf_load = ata_tf_load,
	73	.tf_read = ata_tf_read,
	74	.check_status = ata_check_status,
	75	.exec_command = ata_exec_command,
	76	.dev_select = ata_std_dev_select,
	77
	78	.freeze = ata_bmdma_freeze,
	79	.thaw = ata_bmdma_thaw,
	80	.error_handler = ata_bmdma_error_handler,
	81	.post_internal_cmd = ata_bmdma_post_internal_cmd,
570cb62d	82	.cable_detect = ata_cable_unknown,
a20c9e82 PM	83
	84	.qc_prep = ata_qc_prep,
	85	.qc_issue = ata_qc_issue_prot,
	86
0d5ff566	87	.data_xfer = ata_data_xfer_noirq,
a20c9e82	88
a20c9e82	89	.irq_clear = ata_bmdma_irq_clear,
246ce3b6	90	.irq_on = ata_irq_on,
a20c9e82	91
b9a3b4d1	92	.port_start = ata_dummy_ret0,
a20c9e82 PM	93	};
	94
	95	static void pata_platform_setup_port(struct ata_ioports *ioaddr,
cf03613e	96	unsigned int shift)
a20c9e82	97	{
a20c9e82	98	/* Fixup the port shift for platforms that need it */
a20c9e82 PM	99	ioaddr->data_addr = ioaddr->cmd_addr + (ATA_REG_DATA << shift);
	100	ioaddr->error_addr = ioaddr->cmd_addr + (ATA_REG_ERR << shift);
	101	ioaddr->feature_addr = ioaddr->cmd_addr + (ATA_REG_FEATURE << shift);
	102	ioaddr->nsect_addr = ioaddr->cmd_addr + (ATA_REG_NSECT << shift);
	103	ioaddr->lbal_addr = ioaddr->cmd_addr + (ATA_REG_LBAL << shift);
	104	ioaddr->lbam_addr = ioaddr->cmd_addr + (ATA_REG_LBAM << shift);
	105	ioaddr->lbah_addr = ioaddr->cmd_addr + (ATA_REG_LBAH << shift);
	106	ioaddr->device_addr = ioaddr->cmd_addr + (ATA_REG_DEVICE << shift);
	107	ioaddr->status_addr = ioaddr->cmd_addr + (ATA_REG_STATUS << shift);
	108	ioaddr->command_addr = ioaddr->cmd_addr + (ATA_REG_CMD << shift);
	109	}
	110
	111	/**
cf03613e AV	112	* __pata_platform_probe - attach a platform interface
	113	* @dev: device
	114	* @io_res: Resource representing I/O base
	115	* @ctl_res: Resource representing CTL base
	116	* @irq_res: Resource representing IRQ and its flags
	117	* @ioport_shift: I/O port shift
	118	* @__pio_mask: PIO mask
a20c9e82 PM	119	*
	120	* Register a platform bus IDE interface. Such interfaces are PIO and we
	121	* assume do not support IRQ sharing.
	122	*
f7fc0ceb	123	* Platform devices are expected to contain at least 2 resources per port:
a20c9e82 PM	124	*
	125	* - I/O Base (IORESOURCE_IO or IORESOURCE_MEM)
	126	* - CTL Base (IORESOURCE_IO or IORESOURCE_MEM)
f7fc0ceb PM	127	*
	128	* and optionally:
	129	*
a20c9e82 PM	130	* - IRQ (IORESOURCE_IRQ)
	131	*
	132	* If the base resources are both mem types, the ioremap() is handled
	133	* here. For IORESOURCE_IO, it's assumed that there's no remapping
	134	* necessary.
f7fc0ceb PM	135	*
f7fc0ceb PM	136	* If no IRQ resource is present, PIO polling mode is used instead.
a20c9e82	137	*/
cf03613e AV	138	int __devinit __pata_platform_probe(struct device *dev,
	139	struct resource *io_res,
	140	struct resource *ctl_res,
	141	struct resource *irq_res,
	142	unsigned int ioport_shift,
	143	int __pio_mask)
a20c9e82	144	{
5d728824 TH	145	struct ata_host *host;
5d728824 TH	146	struct ata_port *ap;
a20c9e82	147	unsigned int mmio;
cf03613e AV	148	int irq = 0;
cf03613e AV	149	int irq_flags = 0;
a20c9e82 PM	150
	151	/*
	152	* Check for MMIO
	153	*/
	154	mmio = (( io_res->flags == IORESOURCE_MEM) &&
	155	(ctl_res->flags == IORESOURCE_MEM));
	156
f7fc0ceb PM	157	/*
	158	* And the IRQ
	159	*/
cf03613e AV	160	if (irq_res && irq_res->start > 0) {
	161	irq = irq_res->start;
	162	irq_flags = irq_res->flags;
	163	}
f7fc0ceb	164
a20c9e82 PM	165	/*
	166	* Now that that's out of the way, wire up the port..
	167	*/
cf03613e	168	host = ata_host_alloc(dev, 1);
5d728824 TH	169	if (!host)
	170	return -ENOMEM;
	171	ap = host->ports[0];
	172
	173	ap->ops = &pata_platform_port_ops;
cf03613e	174	ap->pio_mask = __pio_mask;
5d728824	175	ap->flags \|= ATA_FLAG_SLAVE_POSS;
a20c9e82	176
f7fc0ceb PM	177	/*
	178	* Use polling mode if there's no IRQ
	179	*/
	180	if (!irq) {
	181	ap->flags \|= ATA_FLAG_PIO_POLLING;
	182	ata_port_desc(ap, "no IRQ, using PIO polling");
	183	}
	184
a20c9e82 PM	185	/*
	186	* Handle the MMIO case
	187	*/
	188	if (mmio) {
cf03613e	189	ap->ioaddr.cmd_addr = devm_ioremap(dev, io_res->start,
0d5ff566	190	io_res->end - io_res->start + 1);
cf03613e	191	ap->ioaddr.ctl_addr = devm_ioremap(dev, ctl_res->start,
0d5ff566	192	ctl_res->end - ctl_res->start + 1);
a20c9e82	193	} else {
cf03613e	194	ap->ioaddr.cmd_addr = devm_ioport_map(dev, io_res->start,
0d5ff566	195	io_res->end - io_res->start + 1);
cf03613e	196	ap->ioaddr.ctl_addr = devm_ioport_map(dev, ctl_res->start,
0d5ff566 TH	197	ctl_res->end - ctl_res->start + 1);
0d5ff566 TH	198	}
5d728824	199	if (!ap->ioaddr.cmd_addr \|\| !ap->ioaddr.ctl_addr) {
cf03613e	200	dev_err(dev, "failed to map IO/CTL base\n");
0d5ff566	201	return -ENOMEM;
a20c9e82 PM	202	}
a20c9e82 PM	203
5d728824	204	ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;
a20c9e82	205
cf03613e	206	pata_platform_setup_port(&ap->ioaddr, ioport_shift);
a20c9e82	207
cbcdd875 TH	208	ata_port_desc(ap, "%s cmd 0x%llx ctl 0x%llx", mmio ? "mmio" : "ioport",
	209	(unsigned long long)io_res->start,
	210	(unsigned long long)ctl_res->start);
	211
5d728824	212	/* activate */
f7fc0ceb	213	return ata_host_activate(host, irq, irq ? ata_interrupt : NULL,
cf03613e	214	irq_flags, &pata_platform_sht);
a20c9e82	215	}
cf03613e	216	EXPORT_SYMBOL_GPL(__pata_platform_probe);
a20c9e82 PM	217
a20c9e82 PM	218	/**
cf03613e AV	219	* __pata_platform_remove - unplug a platform interface
cf03613e AV	220	* @dev: device
a20c9e82 PM	221	*
	222	* A platform bus ATA device has been unplugged. Perform the needed
	223	* cleanup. Also called on module unload for any active devices.
	224	*/
cf03613e	225	int __devexit __pata_platform_remove(struct device *dev)
a20c9e82	226	{
a20c9e82 PM	227	struct ata_host *host = dev_get_drvdata(dev);
a20c9e82 PM	228
1a68ff13	229	ata_host_detach(host);
a20c9e82 PM	230
	231	return 0;
	232	}
cf03613e AV	233	EXPORT_SYMBOL_GPL(__pata_platform_remove);
	234
	235	static int __devinit pata_platform_probe(struct platform_device *pdev)
	236	{
	237	struct resource *io_res;
	238	struct resource *ctl_res;
	239	struct resource *irq_res;
	240	struct pata_platform_info *pp_info = pdev->dev.platform_data;
	241
	242	/*
	243	* Simple resource validation ..
	244	*/
	245	if ((pdev->num_resources != 3) && (pdev->num_resources != 2)) {
	246	dev_err(&pdev->dev, "invalid number of resources\n");
	247	return -EINVAL;
	248	}
	249
	250	/*
	251	* Get the I/O base first
	252	*/
	253	io_res = platform_get_resource(pdev, IORESOURCE_IO, 0);
	254	if (io_res == NULL) {
	255	io_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	256	if (unlikely(io_res == NULL))
	257	return -EINVAL;
	258	}
	259
	260	/*
	261	* Then the CTL base
	262	*/
	263	ctl_res = platform_get_resource(pdev, IORESOURCE_IO, 1);
	264	if (ctl_res == NULL) {
	265	ctl_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
	266	if (unlikely(ctl_res == NULL))
	267	return -EINVAL;
	268	}
	269
	270	/*
	271	* And the IRQ
	272	*/
	273	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	274	if (irq_res)
	275	irq_res->flags = pp_info ? pp_info->irq_flags : 0;
	276
	277	return __pata_platform_probe(&pdev->dev, io_res, ctl_res, irq_res,
	278	pp_info ? pp_info->ioport_shift : 0,
	279	pio_mask);
	280	}
	281
	282	static int __devexit pata_platform_remove(struct platform_device *pdev)
	283	{
	284	return __pata_platform_remove(&pdev->dev);
	285	}
a20c9e82 PM	286
	287	static struct platform_driver pata_platform_driver = {
	288	.probe = pata_platform_probe,
	289	.remove = __devexit_p(pata_platform_remove),
	290	.driver = {
	291	.name = DRV_NAME,
	292	.owner = THIS_MODULE,
	293	},
	294	};
	295
	296	static int __init pata_platform_init(void)
	297	{
	298	return platform_driver_register(&pata_platform_driver);
	299	}
	300
	301	static void __exit pata_platform_exit(void)
	302	{
	303	platform_driver_unregister(&pata_platform_driver);
	304	}
	305	module_init(pata_platform_init);
	306	module_exit(pata_platform_exit);
	307
	308	module_param(pio_mask, int, 0);
	309
	310	MODULE_AUTHOR("Paul Mundt");
	311	MODULE_DESCRIPTION("low-level driver for platform device ATA");
	312	MODULE_LICENSE("GPL");
	313	MODULE_VERSION(DRV_VERSION);