[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/platform_device.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/slab.h>

#include <pcmcia/ss.h>

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

#include <mach/board.h>
#include <mach/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;
};

static inline int at91_cf_present(struct at91_cf_socket *cf)
{
	return !gpio_get_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 || gpio_get_value(rdy))
			*sp |= SS_READY;
		if (!vcc || gpio_get_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:
				gpio_set_value(cf->board->vcc_pin, 0);
				break;
			case 33:
				gpio_set_value(cf->board->vcc_pin, 1);
				break;
			default:
				return -EINVAL;
		}
	}

	/* toggle reset if needed */
	gpio_set_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 = gpio_request(board->det_pin, "cf_det");
	if (status < 0)
		goto fail0;
	status = request_irq(board->det_pin, at91_cf_irq, 0, driver_name, cf);
	if (status < 0)
		goto fail00;
	device_init_wakeup(&pdev->dev, 1);

	status = gpio_request(board->rst_pin, "cf_rst");
	if (status < 0)
		goto fail0a;

	if (board->vcc_pin) {
		status = gpio_request(board->vcc_pin, "cf_vcc");
		if (status < 0)
			goto fail0b;
	}

	/*
	 * 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 = gpio_request(board->irq_pin, "cf_irq");
		if (status < 0)
			goto fail0c;
		status = request_irq(board->irq_pin, at91_cf_irq,
				IRQF_SHARED, driver_name, cf);
		if (status < 0)
			goto fail0d;
		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.parent = &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);
fail0d:
		gpio_free(board->irq_pin);
	}
fail0c:
	if (board->vcc_pin)
		gpio_free(board->vcc_pin);
fail0b:
	gpio_free(board->rst_pin);
fail0a:
	device_init_wakeup(&pdev->dev, 0);
	free_irq(board->det_pin, cf);
fail00:
	gpio_free(board->det_pin);
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);
	release_mem_region(io->start, io->end + 1 - io->start);
	iounmap((void __iomem *) cf->socket.io_offset);
	if (board->irq_pin) {
		free_irq(board->irq_pin, cf);
		gpio_free(board->irq_pin);
	}
	if (board->vcc_pin)
		gpio_free(board->vcc_pin);
	gpio_free(board->rst_pin);
	device_init_wakeup(&pdev->dev, 0);
	free_irq(board->det_pin, cf);
	gpio_free(board->det_pin);
	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;

	if (device_may_wakeup(&pdev->dev)) {
		enable_irq_wake(board->det_pin);
		if (board->irq_pin)
			enable_irq_wake(board->irq_pin);
	}
	return 0;
}

static int at91_cf_resume(struct platform_device *pdev)
{
	struct at91_cf_socket	*cf = platform_get_drvdata(pdev);
	struct at91_cf_data	*board = cf->board;

	if (device_may_wakeup(&pdev->dev)) {
		disable_irq_wake(board->det_pin);
		if (board->irq_pin)
			disable_irq_wake(board->irq_pin);
	}

	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,
	},
	.remove		= __exit_p(at91_cf_remove),
	.suspend	= at91_cf_suspend,
	.resume		= at91_cf_resume,
};

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

static int __init at91_cf_init(void)
{
	return platform_driver_probe(&at91_cf_driver, at91_cf_probe);
}
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");
MODULE_ALIAS("platform:at91_cf");
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>
2c1f3b7a AV	14	#include <linux/platform_device.h>
	15	#include <linux/errno.h>
	16	#include <linux/init.h>
	17	#include <linux/interrupt.h>
5a0e3ad6	18	#include <linux/slab.h>
2c1f3b7a AV	19
	20	#include <pcmcia/ss.h>
	21
a09e64fb	22	#include <mach/hardware.h>
2c1f3b7a AV	23	#include <asm/io.h>
2c1f3b7a AV	24	#include <asm/sizes.h>
4c1fc445	25	#include <asm/gpio.h>
2c1f3b7a	26
a09e64fb RK	27	#include <mach/board.h>
a09e64fb RK	28	#include <mach/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	};
2c1f3b7a AV	55
2c1f3b7a AV	56	static inline int at91_cf_present(struct at91_cf_socket *cf)
2c1f3b7a AV	57	{
4c1fc445	58	return !gpio_get_value(cf->board->det_pin);
2c1f3b7a AV	59	}
	60
	61	/--------------------------------------------------------------------------/
	62
	63	static int at91_cf_ss_init(struct pcmcia_socket *s)
	64	{
	65	return 0;
	66	}
	67
7d12e780	68	static irqreturn_t at91_cf_irq(int irq, void *_cf)
2c1f3b7a	69	{
c7bec5ab	70	struct at91_cf_socket *cf = _cf;
2c1f3b7a AV	71
	72	if (irq == cf->board->det_pin) {
	73	unsigned present = at91_cf_present(cf);
	74
	75	/* kick pccard as needed */
	76	if (present != cf->present) {
	77	cf->present = present;
2c536200 DB	78	pr_debug("%s: card %s\n", driver_name,
2c536200 DB	79	present ? "present" : "gone");
2c1f3b7a AV	80	pcmcia_parse_events(&cf->socket, SS_DETECT);
	81	}
	82	}
	83
	84	return IRQ_HANDLED;
	85	}
	86
	87	static int at91_cf_get_status(struct pcmcia_socket s, u_int sp)
	88	{
	89	struct at91_cf_socket *cf;
	90
	91	if (!sp)
	92	return -EINVAL;
	93
	94	cf = container_of(s, struct at91_cf_socket, socket);
	95
2c536200	96	/* NOTE: CF is always 3VCARD */
2c1f3b7a AV	97	if (at91_cf_present(cf)) {
	98	int rdy = cf->board->irq_pin; /* RDY/nIRQ */
	99	int vcc = cf->board->vcc_pin;
	100
	101	*sp = SS_DETECT \| SS_3VCARD;
4c1fc445	102	if (!rdy \|\| gpio_get_value(rdy))
2c1f3b7a	103	*sp \|= SS_READY;
4c1fc445	104	if (!vcc \|\| gpio_get_value(vcc))
2c1f3b7a AV	105	*sp \|= SS_POWERON;
	106	} else
	107	*sp = 0;
	108
	109	return 0;
	110	}
	111
2c536200 DB	112	static int
2c536200 DB	113	at91_cf_set_socket(struct pcmcia_socket sock, struct socket_state_t s)
2c1f3b7a AV	114	{
	115	struct at91_cf_socket *cf;
	116
	117	cf = container_of(sock, struct at91_cf_socket, socket);
	118
	119	/* switch Vcc if needed and possible */
	120	if (cf->board->vcc_pin) {
	121	switch (s->Vcc) {
	122	case 0:
4c1fc445	123	gpio_set_value(cf->board->vcc_pin, 0);
2c1f3b7a AV	124	break;
2c1f3b7a AV	125	case 33:
4c1fc445	126	gpio_set_value(cf->board->vcc_pin, 1);
2c1f3b7a AV	127	break;
	128	default:
	129	return -EINVAL;
	130	}
	131	}
	132
	133	/* toggle reset if needed */
4c1fc445	134	gpio_set_value(cf->board->rst_pin, s->flags & SS_RESET);
2c1f3b7a AV	135
	136	pr_debug("%s: Vcc %d, io_irq %d, flags %04x csc %04x\n",
	137	driver_name, s->Vcc, s->io_irq, s->flags, s->csc_mask);
	138
	139	return 0;
	140	}
	141
	142	static int at91_cf_ss_suspend(struct pcmcia_socket *s)
	143	{
	144	return at91_cf_set_socket(s, &dead_socket);
	145	}
	146
	147	/* we already mapped the I/O region */
	148	static int at91_cf_set_io_map(struct pcmcia_socket s, struct pccard_io_map io)
	149	{
	150	struct at91_cf_socket *cf;
	151	u32 csr;
	152
	153	cf = container_of(s, struct at91_cf_socket, socket);
	154	io->flags &= (MAP_ACTIVE \| MAP_16BIT \| MAP_AUTOSZ);
	155
	156	/*
	157	* Use 16 bit accesses unless/until we need 8-bit i/o space.
2c1f3b7a	158	*/
40a0017e	159	csr = at91_sys_read(AT91_SMC_CSR(cf->board->chipselect)) & ~AT91_SMC_DBW;
2c1f3b7a AV	160
	161	/*
	162	* NOTE: this CF controller ignores IOIS16, so we can't really do
	163	* MAP_AUTOSZ. The 16bit mode allows single byte access on either
	164	* D0-D7 (even addr) or D8-D15 (odd), so it's close enough for many
	165	* purposes (and handles ide-cs).
	166	*
	167	* The 8bit mode is needed for odd byte access on D0-D7. It seems
	168	* some cards only like that way to get at the odd byte, despite
	169	* CF 3.0 spec table 35 also giving the D8-D15 option.
	170	*/
ebe5cfb3	171	if (!(io->flags & (MAP_16BIT \| MAP_AUTOSZ))) {
2c1f3b7a AV	172	csr \|= AT91_SMC_DBW_8;
	173	pr_debug("%s: 8bit i/o bus\n", driver_name);
	174	} else {
	175	csr \|= AT91_SMC_DBW_16;
	176	pr_debug("%s: 16bit i/o bus\n", driver_name);
	177	}
40a0017e	178	at91_sys_write(AT91_SMC_CSR(cf->board->chipselect), csr);
2c1f3b7a AV	179
	180	io->start = cf->socket.io_offset;
	181	io->stop = io->start + SZ_2K - 1;
	182
	183	return 0;
	184	}
	185
	186	/* pcmcia layer maps/unmaps mem regions */
2c536200 DB	187	static int
2c536200 DB	188	at91_cf_set_mem_map(struct pcmcia_socket s, struct pccard_mem_map map)
2c1f3b7a AV	189	{
	190	struct at91_cf_socket *cf;
	191
	192	if (map->card_start)
	193	return -EINVAL;
	194
	195	cf = container_of(s, struct at91_cf_socket, socket);
	196
ebe5cfb3	197	map->flags &= (MAP_ACTIVE \| MAP_ATTRIB \| MAP_16BIT);
2c1f3b7a	198	if (map->flags & MAP_ATTRIB)
ebe5cfb3	199	map->static_start = cf->phys_baseaddr + CF_ATTR_PHYS;
2c1f3b7a	200	else
ebe5cfb3	201	map->static_start = cf->phys_baseaddr + CF_MEM_PHYS;
2c1f3b7a AV	202
	203	return 0;
	204	}
	205
	206	static struct pccard_operations at91_cf_ops = {
	207	.init = at91_cf_ss_init,
	208	.suspend = at91_cf_ss_suspend,
	209	.get_status = at91_cf_get_status,
	210	.set_socket = at91_cf_set_socket,
	211	.set_io_map = at91_cf_set_io_map,
	212	.set_mem_map = at91_cf_set_mem_map,
	213	};
	214
	215	/--------------------------------------------------------------------------/
	216
0db6095d	217	static int __init at91_cf_probe(struct platform_device *pdev)
2c1f3b7a AV	218	{
2c1f3b7a AV	219	struct at91_cf_socket *cf;
0db6095d	220	struct at91_cf_data *board = pdev->dev.platform_data;
2c536200	221	struct resource *io;
2c1f3b7a AV	222	int status;
	223
	224	if (!board \|\| !board->det_pin \|\| !board->rst_pin)
	225	return -ENODEV;
	226
2c536200 DB	227	io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	228	if (!io)
	229	return -ENODEV;
	230
cd861280	231	cf = kzalloc(sizeof *cf, GFP_KERNEL);
2c1f3b7a AV	232	if (!cf)
	233	return -ENOMEM;
	234
	235	cf->board = board;
	236	cf->pdev = pdev;
ebe5cfb3	237	cf->phys_baseaddr = io->start;
0db6095d	238	platform_set_drvdata(pdev, cf);
2c1f3b7a	239
2c1f3b7a	240	/* must be a GPIO; ergo must trigger on both edges */
4c1fc445	241	status = gpio_request(board->det_pin, "cf_det");
2c1f3b7a AV	242	if (status < 0)
2c1f3b7a AV	243	goto fail0;
4c1fc445 DB	244	status = request_irq(board->det_pin, at91_cf_irq, 0, driver_name, cf);
	245	if (status < 0)
	246	goto fail00;
0db6095d	247	device_init_wakeup(&pdev->dev, 1);
2c1f3b7a	248
4c1fc445 DB	249	status = gpio_request(board->rst_pin, "cf_rst");
	250	if (status < 0)
	251	goto fail0a;
	252
	253	if (board->vcc_pin) {
	254	status = gpio_request(board->vcc_pin, "cf_vcc");
	255	if (status < 0)
	256	goto fail0b;
	257	}
	258
2c1f3b7a AV	259	/*
	260	* The card driver will request this irq later as needed.
	261	* but it causes lots of "irqNN: nobody cared" messages
	262	* unless we report that we handle everything (sigh).
	263	* (Note: DK board doesn't wire the IRQ pin...)
	264	*/
	265	if (board->irq_pin) {
4c1fc445 DB	266	status = gpio_request(board->irq_pin, "cf_irq");
	267	if (status < 0)
	268	goto fail0c;
2c1f3b7a	269	status = request_irq(board->irq_pin, at91_cf_irq,
dace1453	270	IRQF_SHARED, driver_name, cf);
2c1f3b7a	271	if (status < 0)
4c1fc445	272	goto fail0d;
2c1f3b7a	273	cf->socket.pci_irq = board->irq_pin;
2c536200	274	} else
9130adda	275	cf->socket.pci_irq = nr_irqs + 1;
2c1f3b7a AV	276
2c1f3b7a AV	277	/* pcmcia layer only remaps "real" memory not iospace */
4c1fc445 DB	278	cf->socket.io_offset = (unsigned long)
4c1fc445 DB	279	ioremap(cf->phys_baseaddr + CF_IO_PHYS, SZ_2K);
ebe5cfb3 AV	280	if (!cf->socket.io_offset) {
ebe5cfb3 AV	281	status = -ENXIO;
2c1f3b7a	282	goto fail1;
ebe5cfb3	283	}
2c1f3b7a	284
40a0017e	285	/* reserve chip-select regions */
2c536200	286	if (!request_mem_region(io->start, io->end + 1 - io->start,
ebe5cfb3 AV	287	driver_name)) {
ebe5cfb3 AV	288	status = -ENXIO;
2c1f3b7a	289	goto fail1;
ebe5cfb3	290	}
2c1f3b7a AV	291
	292	pr_info("%s: irqs det #%d, io #%d\n", driver_name,
	293	board->det_pin, board->irq_pin);
	294
	295	cf->socket.owner = THIS_MODULE;
e4a3c3f0	296	cf->socket.dev.parent = &pdev->dev;
2c1f3b7a AV	297	cf->socket.ops = &at91_cf_ops;
	298	cf->socket.resource_ops = &pccard_static_ops;
	299	cf->socket.features = SS_CAP_PCCARD \| SS_CAP_STATIC_MAP
	300	\| SS_CAP_MEM_ALIGN;
	301	cf->socket.map_size = SZ_2K;
2c536200	302	cf->socket.io[0].res = io;
2c1f3b7a AV	303
	304	status = pcmcia_register_socket(&cf->socket);
	305	if (status < 0)
	306	goto fail2;
	307
	308	return 0;
	309
	310	fail2:
2c536200	311	release_mem_region(io->start, io->end + 1 - io->start);
2c1f3b7a	312	fail1:
3efa9970 AL	313	if (cf->socket.io_offset)
3efa9970 AL	314	iounmap((void __iomem *) cf->socket.io_offset);
4c1fc445	315	if (board->irq_pin) {
2c1f3b7a	316	free_irq(board->irq_pin, cf);
4c1fc445 DB	317	fail0d:
	318	gpio_free(board->irq_pin);
	319	}
	320	fail0c:
	321	if (board->vcc_pin)
	322	gpio_free(board->vcc_pin);
	323	fail0b:
	324	gpio_free(board->rst_pin);
2c1f3b7a	325	fail0a:
1fbece15	326	device_init_wakeup(&pdev->dev, 0);
2c1f3b7a	327	free_irq(board->det_pin, cf);
4c1fc445 DB	328	fail00:
4c1fc445 DB	329	gpio_free(board->det_pin);
2c1f3b7a	330	fail0:
2c1f3b7a AV	331	kfree(cf);
	332	return status;
	333	}
	334
0db6095d	335	static int __exit at91_cf_remove(struct platform_device *pdev)
2c1f3b7a	336	{
0db6095d DB	337	struct at91_cf_socket *cf = platform_get_drvdata(pdev);
0db6095d DB	338	struct at91_cf_data *board = cf->board;
2c536200	339	struct resource *io = cf->socket.io[0].res;
2c1f3b7a AV	340
2c1f3b7a AV	341	pcmcia_unregister_socket(&cf->socket);
4c1fc445 DB	342	release_mem_region(io->start, io->end + 1 - io->start);
	343	iounmap((void __iomem *) cf->socket.io_offset);
	344	if (board->irq_pin) {
0db6095d	345	free_irq(board->irq_pin, cf);
4c1fc445 DB	346	gpio_free(board->irq_pin);
	347	}
	348	if (board->vcc_pin)
	349	gpio_free(board->vcc_pin);
	350	gpio_free(board->rst_pin);
0db6095d	351	device_init_wakeup(&pdev->dev, 0);
ebe5cfb3	352	free_irq(board->det_pin, cf);
4c1fc445	353	gpio_free(board->det_pin);
2c1f3b7a AV	354	kfree(cf);
	355	return 0;
	356	}
	357
0db6095d DB	358	#ifdef CONFIG_PM
	359
	360	static int at91_cf_suspend(struct platform_device *pdev, pm_message_t mesg)
	361	{
	362	struct at91_cf_socket *cf = platform_get_drvdata(pdev);
	363	struct at91_cf_data *board = cf->board;
	364
1fbece15	365	if (device_may_wakeup(&pdev->dev)) {
0db6095d	366	enable_irq_wake(board->det_pin);
1fbece15 DB	367	if (board->irq_pin)
1fbece15 DB	368	enable_irq_wake(board->irq_pin);
0db6095d	369	}
0db6095d DB	370	return 0;
	371	}
	372
	373	static int at91_cf_resume(struct platform_device *pdev)
	374	{
9af20376 MP	375	struct at91_cf_socket *cf = platform_get_drvdata(pdev);
	376	struct at91_cf_data *board = cf->board;
	377
	378	if (device_may_wakeup(&pdev->dev)) {
	379	disable_irq_wake(board->det_pin);
	380	if (board->irq_pin)
	381	disable_irq_wake(board->irq_pin);
	382	}
	383
0db6095d DB	384	return 0;
	385	}
	386
	387	#else
	388	#define at91_cf_suspend NULL
	389	#define at91_cf_resume NULL
	390	#endif
	391
	392	static struct platform_driver at91_cf_driver = {
	393	.driver = {
	394	.name = (char *) driver_name,
	395	.owner = THIS_MODULE,
	396	},
2c1f3b7a	397	.remove = __exit_p(at91_cf_remove),
0db6095d DB	398	.suspend = at91_cf_suspend,
0db6095d DB	399	.resume = at91_cf_resume,
2c1f3b7a AV	400	};
	401
	402	/--------------------------------------------------------------------------/
	403
	404	static int __init at91_cf_init(void)
	405	{
02c83595	406	return platform_driver_probe(&at91_cf_driver, at91_cf_probe);
2c1f3b7a AV	407	}
	408	module_init(at91_cf_init);
	409
	410	static void __exit at91_cf_exit(void)
	411	{
0db6095d	412	platform_driver_unregister(&at91_cf_driver);
2c1f3b7a AV	413	}
	414	module_exit(at91_cf_exit);
	415
	416	MODULE_DESCRIPTION("AT91 Compact Flash Driver");
	417	MODULE_AUTHOR("David Brownell");
	418	MODULE_LICENSE("GPL");
12c2c019	419	MODULE_ALIAS("platform:at91_cf");