[net-next-2.6.git] / drivers / pcmcia / at91_cf.c

/*
 * at91_cf.c -- AT91 CompactFlash controller driver
 *
 * Copyright (C) 2005 David Brownell
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/platform_device.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/interrupt.h>

#include <pcmcia/ss.h>

#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/sizes.h>

#include <asm/arch/board.h>
#include <asm/arch/gpio.h>
#include <asm/arch/at91rm9200_mc.h>


/*
 * A0..A10 work in each range; A23 indicates I/O space;  A25 is CFRNW;
 * some other bit in {A24,A22..A11} is nREG to flag memory access
 * (vs attributes).  So more than 2KB/region would just be waste.
 * Note: These are offsets from the physical base address.
 */
#define	CF_ATTR_PHYS	(0)
#define	CF_IO_PHYS	(1 << 23)
#define	CF_MEM_PHYS	(0x017ff800)

/*--------------------------------------------------------------------------*/

static const char driver_name[] = "at91_cf";

struct at91_cf_socket {
	struct pcmcia_socket	socket;

	unsigned		present:1;

	struct platform_device	*pdev;
	struct at91_cf_data	*board;

	unsigned long		phys_baseaddr;
};

#define	SZ_2K			(2 * SZ_1K)

static inline int at91_cf_present(struct at91_cf_socket *cf)
{
	return !at91_get_gpio_value(cf->board->det_pin);
}

/*--------------------------------------------------------------------------*/

static int at91_cf_ss_init(struct pcmcia_socket *s)
{
	return 0;
}

static irqreturn_t at91_cf_irq(int irq, void *_cf)
{
	struct at91_cf_socket *cf = _cf;

	if (irq == cf->board->det_pin) {
		unsigned present = at91_cf_present(cf);

		/* kick pccard as needed */
		if (present != cf->present) {
			cf->present = present;
			pr_debug("%s: card %s\n", driver_name,
					present ? "present" : "gone");
			pcmcia_parse_events(&cf->socket, SS_DETECT);
		}
	}

	return IRQ_HANDLED;
}

static int at91_cf_get_status(struct pcmcia_socket *s, u_int *sp)
{
	struct at91_cf_socket	*cf;

	if (!sp)
		return -EINVAL;

	cf = container_of(s, struct at91_cf_socket, socket);

	/* NOTE: CF is always 3VCARD */
	if (at91_cf_present(cf)) {
		int rdy	= cf->board->irq_pin;	/* RDY/nIRQ */
		int vcc	= cf->board->vcc_pin;

		*sp = SS_DETECT | SS_3VCARD;
		if (!rdy || at91_get_gpio_value(rdy))
			*sp |= SS_READY;
		if (!vcc || at91_get_gpio_value(vcc))
			*sp |= SS_POWERON;
	} else
		*sp = 0;

	return 0;
}

static int
at91_cf_set_socket(struct pcmcia_socket *sock, struct socket_state_t *s)
{
	struct at91_cf_socket	*cf;

	cf = container_of(sock, struct at91_cf_socket, socket);

	/* switch Vcc if needed and possible */
	if (cf->board->vcc_pin) {
		switch (s->Vcc) {
			case 0:
				at91_set_gpio_value(cf->board->vcc_pin, 0);
				break;
			case 33:
				at91_set_gpio_value(cf->board->vcc_pin, 1);
				break;
			default:
				return -EINVAL;
		}
	}

	/* toggle reset if needed */
	at91_set_gpio_value(cf->board->rst_pin, s->flags & SS_RESET);

	pr_debug("%s: Vcc %d, io_irq %d, flags %04x csc %04x\n",
		driver_name, s->Vcc, s->io_irq, s->flags, s->csc_mask);

	return 0;
}

static int at91_cf_ss_suspend(struct pcmcia_socket *s)
{
	return at91_cf_set_socket(s, &dead_socket);
}

/* we already mapped the I/O region */
static int at91_cf_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io)
{
	struct at91_cf_socket	*cf;
	u32			csr;

	cf = container_of(s, struct at91_cf_socket, socket);
	io->flags &= (MAP_ACTIVE | MAP_16BIT | MAP_AUTOSZ);

	/*
	 * Use 16 bit accesses unless/until we need 8-bit i/o space.
	 */
	csr = at91_sys_read(AT91_SMC_CSR(cf->board->chipselect)) & ~AT91_SMC_DBW;

	/*
	 * NOTE: this CF controller ignores IOIS16, so we can't really do
	 * MAP_AUTOSZ.  The 16bit mode allows single byte access on either
	 * D0-D7 (even addr) or D8-D15 (odd), so it's close enough for many
	 * purposes (and handles ide-cs).
	 *
	 * The 8bit mode is needed for odd byte access on D0-D7.  It seems
	 * some cards only like that way to get at the odd byte, despite
	 * CF 3.0 spec table 35 also giving the D8-D15 option.
	 */
	if (!(io->flags & (MAP_16BIT | MAP_AUTOSZ))) {
		csr |= AT91_SMC_DBW_8;
		pr_debug("%s: 8bit i/o bus\n", driver_name);
	} else {
		csr |= AT91_SMC_DBW_16;
		pr_debug("%s: 16bit i/o bus\n", driver_name);
	}
	at91_sys_write(AT91_SMC_CSR(cf->board->chipselect), csr);

	io->start = cf->socket.io_offset;
	io->stop = io->start + SZ_2K - 1;

	return 0;
}

/* pcmcia layer maps/unmaps mem regions */
static int
at91_cf_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *map)
{
	struct at91_cf_socket	*cf;

	if (map->card_start)
		return -EINVAL;

	cf = container_of(s, struct at91_cf_socket, socket);

	map->flags &= (MAP_ACTIVE | MAP_ATTRIB | MAP_16BIT);
	if (map->flags & MAP_ATTRIB)
		map->static_start = cf->phys_baseaddr + CF_ATTR_PHYS;
	else
		map->static_start = cf->phys_baseaddr + CF_MEM_PHYS;

	return 0;
}

static struct pccard_operations at91_cf_ops = {
	.init			= at91_cf_ss_init,
	.suspend		= at91_cf_ss_suspend,
	.get_status		= at91_cf_get_status,
	.set_socket		= at91_cf_set_socket,
	.set_io_map		= at91_cf_set_io_map,
	.set_mem_map		= at91_cf_set_mem_map,
};

/*--------------------------------------------------------------------------*/

static int __init at91_cf_probe(struct platform_device *pdev)
{
	struct at91_cf_socket	*cf;
	struct at91_cf_data	*board = pdev->dev.platform_data;
	struct resource		*io;
	int			status;

	if (!board || !board->det_pin || !board->rst_pin)
		return -ENODEV;

	io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!io)
		return -ENODEV;

	cf = kzalloc(sizeof *cf, GFP_KERNEL);
	if (!cf)
		return -ENOMEM;

	cf->board = board;
	cf->pdev = pdev;
	cf->phys_baseaddr = io->start;
	platform_set_drvdata(pdev, cf);

	/* must be a GPIO; ergo must trigger on both edges */
	status = request_irq(board->det_pin, at91_cf_irq, 0, driver_name, cf);
	if (status < 0)
		goto fail0;
	device_init_wakeup(&pdev->dev, 1);

	/*
	 * The card driver will request this irq later as needed.
	 * but it causes lots of "irqNN: nobody cared" messages
	 * unless we report that we handle everything (sigh).
	 * (Note:  DK board doesn't wire the IRQ pin...)
	 */
	if (board->irq_pin) {
		status = request_irq(board->irq_pin, at91_cf_irq,
				IRQF_SHARED, driver_name, cf);
		if (status < 0)
			goto fail0a;
		cf->socket.pci_irq = board->irq_pin;
	} else
		cf->socket.pci_irq = NR_IRQS + 1;

	/* pcmcia layer only remaps "real" memory not iospace */
	cf->socket.io_offset = (unsigned long) ioremap(cf->phys_baseaddr + CF_IO_PHYS, SZ_2K);
	if (!cf->socket.io_offset) {
		status = -ENXIO;
		goto fail1;
	}

	/* reserve chip-select regions */
	if (!request_mem_region(io->start, io->end + 1 - io->start,
				driver_name)) {
		status = -ENXIO;
		goto fail1;
	}

	pr_info("%s: irqs det #%d, io #%d\n", driver_name,
		board->det_pin, board->irq_pin);

	cf->socket.owner = THIS_MODULE;
	cf->socket.dev.dev = &pdev->dev;
	cf->socket.ops = &at91_cf_ops;
	cf->socket.resource_ops = &pccard_static_ops;
	cf->socket.features = SS_CAP_PCCARD | SS_CAP_STATIC_MAP
				| SS_CAP_MEM_ALIGN;
	cf->socket.map_size = SZ_2K;
	cf->socket.io[0].res = io;

	status = pcmcia_register_socket(&cf->socket);
	if (status < 0)
		goto fail2;

	return 0;

fail2:
	release_mem_region(io->start, io->end + 1 - io->start);
fail1:
	if (cf->socket.io_offset)
		iounmap((void __iomem *) cf->socket.io_offset);
	if (board->irq_pin)
		free_irq(board->irq_pin, cf);
fail0a:
	device_init_wakeup(&pdev->dev, 0);
	free_irq(board->det_pin, cf);
fail0:
	kfree(cf);
	return status;
}

static int __exit at91_cf_remove(struct platform_device *pdev)
{
	struct at91_cf_socket	*cf = platform_get_drvdata(pdev);
	struct at91_cf_data	*board = cf->board;
	struct resource		*io = cf->socket.io[0].res;

	pcmcia_unregister_socket(&cf->socket);
	if (board->irq_pin)
		free_irq(board->irq_pin, cf);
	device_init_wakeup(&pdev->dev, 0);
	free_irq(board->det_pin, cf);
	iounmap((void __iomem *) cf->socket.io_offset);
	release_mem_region(io->start, io->end + 1 - io->start);

	kfree(cf);
	return 0;
}

#ifdef	CONFIG_PM

static int at91_cf_suspend(struct platform_device *pdev, pm_message_t mesg)
{
	struct at91_cf_socket	*cf = platform_get_drvdata(pdev);
	struct at91_cf_data	*board = cf->board;

	pcmcia_socket_dev_suspend(&pdev->dev, mesg);
	if (device_may_wakeup(&pdev->dev)) {
		enable_irq_wake(board->det_pin);
		if (board->irq_pin)
			enable_irq_wake(board->irq_pin);
	} else {
		disable_irq_wake(board->det_pin);
		if (board->irq_pin)
			disable_irq_wake(board->irq_pin);
	}
	return 0;
}

static int at91_cf_resume(struct platform_device *pdev)
{
	pcmcia_socket_dev_resume(&pdev->dev);
	return 0;
}

#else
#define	at91_cf_suspend		NULL
#define	at91_cf_resume		NULL
#endif

static struct platform_driver at91_cf_driver = {
	.driver = {
		.name		= (char *) driver_name,
		.owner		= THIS_MODULE,
	},
	.probe		= at91_cf_probe,
	.remove		= __exit_p(at91_cf_remove),
	.suspend	= at91_cf_suspend,
	.resume		= at91_cf_resume,
};

/*--------------------------------------------------------------------------*/

static int __init at91_cf_init(void)
{
	return platform_driver_register(&at91_cf_driver);
}
module_init(at91_cf_init);

static void __exit at91_cf_exit(void)
{
	platform_driver_unregister(&at91_cf_driver);
}
module_exit(at91_cf_exit);

MODULE_DESCRIPTION("AT91 Compact Flash Driver");
MODULE_AUTHOR("David Brownell");
MODULE_LICENSE("GPL");
Commit	Line	Data
2c1f3b7a AV	1	/*
	2	* at91_cf.c -- AT91 CompactFlash controller driver
	3	*
	4	* Copyright (C) 2005 David Brownell
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*/
	11
	12	#include <linux/module.h>
	13	#include <linux/kernel.h>
	14	#include <linux/sched.h>
	15	#include <linux/platform_device.h>
	16	#include <linux/errno.h>
	17	#include <linux/init.h>
	18	#include <linux/interrupt.h>
	19
	20	#include <pcmcia/ss.h>
	21
	22	#include <asm/hardware.h>
	23	#include <asm/io.h>
	24	#include <asm/sizes.h>
	25
2c1f3b7a AV	26	#include <asm/arch/board.h>
2c1f3b7a AV	27	#include <asm/arch/gpio.h>
55d8baee	28	#include <asm/arch/at91rm9200_mc.h>
2c1f3b7a AV	29
2c1f3b7a AV	30
2c1f3b7a AV	31	/*
	32	* A0..A10 work in each range; A23 indicates I/O space; A25 is CFRNW;
	33	* some other bit in {A24,A22..A11} is nREG to flag memory access
	34	* (vs attributes). So more than 2KB/region would just be waste.
ebe5cfb3	35	* Note: These are offsets from the physical base address.
2c1f3b7a	36	*/
ebe5cfb3 AV	37	#define CF_ATTR_PHYS (0)
	38	#define CF_IO_PHYS (1 << 23)
	39	#define CF_MEM_PHYS (0x017ff800)
2c1f3b7a AV	40
	41	/--------------------------------------------------------------------------/
	42
	43	static const char driver_name[] = "at91_cf";
	44
	45	struct at91_cf_socket {
	46	struct pcmcia_socket socket;
	47
	48	unsigned present:1;
	49
	50	struct platform_device *pdev;
	51	struct at91_cf_data *board;
ebe5cfb3 AV	52
ebe5cfb3 AV	53	unsigned long phys_baseaddr;
2c1f3b7a AV	54	};
	55
	56	#define SZ_2K (2 * SZ_1K)
	57
	58	static inline int at91_cf_present(struct at91_cf_socket *cf)
	59	{
	60	return !at91_get_gpio_value(cf->board->det_pin);
	61	}
	62
	63	/--------------------------------------------------------------------------/
	64
	65	static int at91_cf_ss_init(struct pcmcia_socket *s)
	66	{
	67	return 0;
	68	}
	69
7d12e780	70	static irqreturn_t at91_cf_irq(int irq, void *_cf)
2c1f3b7a	71	{
c7bec5ab	72	struct at91_cf_socket *cf = _cf;
2c1f3b7a AV	73
	74	if (irq == cf->board->det_pin) {
	75	unsigned present = at91_cf_present(cf);
	76
	77	/* kick pccard as needed */
	78	if (present != cf->present) {
	79	cf->present = present;
2c536200 DB	80	pr_debug("%s: card %s\n", driver_name,
2c536200 DB	81	present ? "present" : "gone");
2c1f3b7a AV	82	pcmcia_parse_events(&cf->socket, SS_DETECT);
	83	}
	84	}
	85
	86	return IRQ_HANDLED;
	87	}
	88
	89	static int at91_cf_get_status(struct pcmcia_socket s, u_int sp)
	90	{
	91	struct at91_cf_socket *cf;
	92
	93	if (!sp)
	94	return -EINVAL;
	95
	96	cf = container_of(s, struct at91_cf_socket, socket);
	97
2c536200	98	/* NOTE: CF is always 3VCARD */
2c1f3b7a AV	99	if (at91_cf_present(cf)) {
	100	int rdy = cf->board->irq_pin; /* RDY/nIRQ */
	101	int vcc = cf->board->vcc_pin;
	102
	103	*sp = SS_DETECT \| SS_3VCARD;
	104	if (!rdy \|\| at91_get_gpio_value(rdy))
	105	*sp \|= SS_READY;
	106	if (!vcc \|\| at91_get_gpio_value(vcc))
	107	*sp \|= SS_POWERON;
	108	} else
	109	*sp = 0;
	110
	111	return 0;
	112	}
	113
2c536200 DB	114	static int
2c536200 DB	115	at91_cf_set_socket(struct pcmcia_socket sock, struct socket_state_t s)
2c1f3b7a AV	116	{
	117	struct at91_cf_socket *cf;
	118
	119	cf = container_of(sock, struct at91_cf_socket, socket);
	120
	121	/* switch Vcc if needed and possible */
	122	if (cf->board->vcc_pin) {
	123	switch (s->Vcc) {
	124	case 0:
	125	at91_set_gpio_value(cf->board->vcc_pin, 0);
	126	break;
	127	case 33:
	128	at91_set_gpio_value(cf->board->vcc_pin, 1);
	129	break;
	130	default:
	131	return -EINVAL;
	132	}
	133	}
	134
	135	/* toggle reset if needed */
	136	at91_set_gpio_value(cf->board->rst_pin, s->flags & SS_RESET);
	137
	138	pr_debug("%s: Vcc %d, io_irq %d, flags %04x csc %04x\n",
	139	driver_name, s->Vcc, s->io_irq, s->flags, s->csc_mask);
	140
	141	return 0;
	142	}
	143
	144	static int at91_cf_ss_suspend(struct pcmcia_socket *s)
	145	{
	146	return at91_cf_set_socket(s, &dead_socket);
	147	}
	148
	149	/* we already mapped the I/O region */
	150	static int at91_cf_set_io_map(struct pcmcia_socket s, struct pccard_io_map io)
	151	{
	152	struct at91_cf_socket *cf;
	153	u32 csr;
	154
	155	cf = container_of(s, struct at91_cf_socket, socket);
	156	io->flags &= (MAP_ACTIVE \| MAP_16BIT \| MAP_AUTOSZ);
	157
	158	/*
	159	* Use 16 bit accesses unless/until we need 8-bit i/o space.
2c1f3b7a	160	*/
40a0017e	161	csr = at91_sys_read(AT91_SMC_CSR(cf->board->chipselect)) & ~AT91_SMC_DBW;
2c1f3b7a AV	162
	163	/*
	164	* NOTE: this CF controller ignores IOIS16, so we can't really do
	165	* MAP_AUTOSZ. The 16bit mode allows single byte access on either
	166	* D0-D7 (even addr) or D8-D15 (odd), so it's close enough for many
	167	* purposes (and handles ide-cs).
	168	*
	169	* The 8bit mode is needed for odd byte access on D0-D7. It seems
	170	* some cards only like that way to get at the odd byte, despite
	171	* CF 3.0 spec table 35 also giving the D8-D15 option.
	172	*/
ebe5cfb3	173	if (!(io->flags & (MAP_16BIT \| MAP_AUTOSZ))) {
2c1f3b7a AV	174	csr \|= AT91_SMC_DBW_8;
	175	pr_debug("%s: 8bit i/o bus\n", driver_name);
	176	} else {
	177	csr \|= AT91_SMC_DBW_16;
	178	pr_debug("%s: 16bit i/o bus\n", driver_name);
	179	}
40a0017e	180	at91_sys_write(AT91_SMC_CSR(cf->board->chipselect), csr);
2c1f3b7a AV	181
	182	io->start = cf->socket.io_offset;
	183	io->stop = io->start + SZ_2K - 1;
	184
	185	return 0;
	186	}
	187
	188	/* pcmcia layer maps/unmaps mem regions */
2c536200 DB	189	static int
2c536200 DB	190	at91_cf_set_mem_map(struct pcmcia_socket s, struct pccard_mem_map map)
2c1f3b7a AV	191	{
	192	struct at91_cf_socket *cf;
	193
	194	if (map->card_start)
	195	return -EINVAL;
	196
	197	cf = container_of(s, struct at91_cf_socket, socket);
	198
ebe5cfb3	199	map->flags &= (MAP_ACTIVE \| MAP_ATTRIB \| MAP_16BIT);
2c1f3b7a	200	if (map->flags & MAP_ATTRIB)
ebe5cfb3	201	map->static_start = cf->phys_baseaddr + CF_ATTR_PHYS;
2c1f3b7a	202	else
ebe5cfb3	203	map->static_start = cf->phys_baseaddr + CF_MEM_PHYS;
2c1f3b7a AV	204
	205	return 0;
	206	}
	207
	208	static struct pccard_operations at91_cf_ops = {
	209	.init = at91_cf_ss_init,
	210	.suspend = at91_cf_ss_suspend,
	211	.get_status = at91_cf_get_status,
	212	.set_socket = at91_cf_set_socket,
	213	.set_io_map = at91_cf_set_io_map,
	214	.set_mem_map = at91_cf_set_mem_map,
	215	};
	216
	217	/--------------------------------------------------------------------------/
	218
0db6095d	219	static int __init at91_cf_probe(struct platform_device *pdev)
2c1f3b7a AV	220	{
2c1f3b7a AV	221	struct at91_cf_socket *cf;
0db6095d	222	struct at91_cf_data *board = pdev->dev.platform_data;
2c536200	223	struct resource *io;
2c1f3b7a AV	224	int status;
	225
	226	if (!board \|\| !board->det_pin \|\| !board->rst_pin)
	227	return -ENODEV;
	228
2c536200 DB	229	io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	230	if (!io)
	231	return -ENODEV;
	232
cd861280	233	cf = kzalloc(sizeof *cf, GFP_KERNEL);
2c1f3b7a AV	234	if (!cf)
	235	return -ENOMEM;
	236
	237	cf->board = board;
	238	cf->pdev = pdev;
ebe5cfb3	239	cf->phys_baseaddr = io->start;
0db6095d	240	platform_set_drvdata(pdev, cf);
2c1f3b7a	241
2c1f3b7a	242	/* must be a GPIO; ergo must trigger on both edges */
ebe5cfb3	243	status = request_irq(board->det_pin, at91_cf_irq, 0, driver_name, cf);
2c1f3b7a AV	244	if (status < 0)
2c1f3b7a AV	245	goto fail0;
0db6095d	246	device_init_wakeup(&pdev->dev, 1);
2c1f3b7a AV	247
	248	/*
	249	* The card driver will request this irq later as needed.
	250	* but it causes lots of "irqNN: nobody cared" messages
	251	* unless we report that we handle everything (sigh).
	252	* (Note: DK board doesn't wire the IRQ pin...)
	253	*/
	254	if (board->irq_pin) {
	255	status = request_irq(board->irq_pin, at91_cf_irq,
dace1453	256	IRQF_SHARED, driver_name, cf);
2c1f3b7a AV	257	if (status < 0)
	258	goto fail0a;
	259	cf->socket.pci_irq = board->irq_pin;
2c536200	260	} else
2c1f3b7a AV	261	cf->socket.pci_irq = NR_IRQS + 1;
	262
	263	/* pcmcia layer only remaps "real" memory not iospace */
ebe5cfb3 AV	264	cf->socket.io_offset = (unsigned long) ioremap(cf->phys_baseaddr + CF_IO_PHYS, SZ_2K);
	265	if (!cf->socket.io_offset) {
	266	status = -ENXIO;
2c1f3b7a	267	goto fail1;
ebe5cfb3	268	}
2c1f3b7a	269
40a0017e	270	/* reserve chip-select regions */
2c536200	271	if (!request_mem_region(io->start, io->end + 1 - io->start,
ebe5cfb3 AV	272	driver_name)) {
ebe5cfb3 AV	273	status = -ENXIO;
2c1f3b7a	274	goto fail1;
ebe5cfb3	275	}
2c1f3b7a AV	276
	277	pr_info("%s: irqs det #%d, io #%d\n", driver_name,
	278	board->det_pin, board->irq_pin);
	279
	280	cf->socket.owner = THIS_MODULE;
0db6095d	281	cf->socket.dev.dev = &pdev->dev;
2c1f3b7a AV	282	cf->socket.ops = &at91_cf_ops;
	283	cf->socket.resource_ops = &pccard_static_ops;
	284	cf->socket.features = SS_CAP_PCCARD \| SS_CAP_STATIC_MAP
	285	\| SS_CAP_MEM_ALIGN;
	286	cf->socket.map_size = SZ_2K;
2c536200	287	cf->socket.io[0].res = io;
2c1f3b7a AV	288
	289	status = pcmcia_register_socket(&cf->socket);
	290	if (status < 0)
	291	goto fail2;
	292
	293	return 0;
	294
	295	fail2:
2c536200	296	release_mem_region(io->start, io->end + 1 - io->start);
2c1f3b7a	297	fail1:
3efa9970 AL	298	if (cf->socket.io_offset)
3efa9970 AL	299	iounmap((void __iomem *) cf->socket.io_offset);
2c1f3b7a AV	300	if (board->irq_pin)
	301	free_irq(board->irq_pin, cf);
	302	fail0a:
1fbece15	303	device_init_wakeup(&pdev->dev, 0);
2c1f3b7a AV	304	free_irq(board->det_pin, cf);
2c1f3b7a AV	305	fail0:
2c1f3b7a AV	306	kfree(cf);
	307	return status;
	308	}
	309
0db6095d	310	static int __exit at91_cf_remove(struct platform_device *pdev)
2c1f3b7a	311	{
0db6095d DB	312	struct at91_cf_socket *cf = platform_get_drvdata(pdev);
0db6095d DB	313	struct at91_cf_data *board = cf->board;
2c536200	314	struct resource *io = cf->socket.io[0].res;
2c1f3b7a AV	315
2c1f3b7a AV	316	pcmcia_unregister_socket(&cf->socket);
0db6095d DB	317	if (board->irq_pin)
0db6095d DB	318	free_irq(board->irq_pin, cf);
0db6095d	319	device_init_wakeup(&pdev->dev, 0);
ebe5cfb3	320	free_irq(board->det_pin, cf);
2c1f3b7a	321	iounmap((void __iomem *) cf->socket.io_offset);
2c536200	322	release_mem_region(io->start, io->end + 1 - io->start);
2c1f3b7a	323
2c1f3b7a AV	324	kfree(cf);
	325	return 0;
	326	}
	327
0db6095d DB	328	#ifdef CONFIG_PM
	329
	330	static int at91_cf_suspend(struct platform_device *pdev, pm_message_t mesg)
	331	{
	332	struct at91_cf_socket *cf = platform_get_drvdata(pdev);
	333	struct at91_cf_data *board = cf->board;
	334
	335	pcmcia_socket_dev_suspend(&pdev->dev, mesg);
1fbece15	336	if (device_may_wakeup(&pdev->dev)) {
0db6095d	337	enable_irq_wake(board->det_pin);
1fbece15 DB	338	if (board->irq_pin)
	339	enable_irq_wake(board->irq_pin);
	340	} else {
0db6095d	341	disable_irq_wake(board->det_pin);
1fbece15 DB	342	if (board->irq_pin)
1fbece15 DB	343	disable_irq_wake(board->irq_pin);
0db6095d	344	}
0db6095d DB	345	return 0;
	346	}
	347
	348	static int at91_cf_resume(struct platform_device *pdev)
	349	{
0db6095d DB	350	pcmcia_socket_dev_resume(&pdev->dev);
	351	return 0;
	352	}
	353
	354	#else
	355	#define at91_cf_suspend NULL
	356	#define at91_cf_resume NULL
	357	#endif
	358
	359	static struct platform_driver at91_cf_driver = {
	360	.driver = {
	361	.name = (char *) driver_name,
	362	.owner = THIS_MODULE,
	363	},
2c1f3b7a AV	364	.probe = at91_cf_probe,
2c1f3b7a AV	365	.remove = __exit_p(at91_cf_remove),
0db6095d DB	366	.suspend = at91_cf_suspend,
0db6095d DB	367	.resume = at91_cf_resume,
2c1f3b7a AV	368	};
	369
	370	/--------------------------------------------------------------------------/
	371
	372	static int __init at91_cf_init(void)
	373	{
0db6095d	374	return platform_driver_register(&at91_cf_driver);
2c1f3b7a AV	375	}
	376	module_init(at91_cf_init);
	377
	378	static void __exit at91_cf_exit(void)
	379	{
0db6095d	380	platform_driver_unregister(&at91_cf_driver);
2c1f3b7a AV	381	}
	382	module_exit(at91_cf_exit);
	383
	384	MODULE_DESCRIPTION("AT91 Compact Flash Driver");
	385	MODULE_AUTHOR("David Brownell");
	386	MODULE_LICENSE("GPL");