[linux-2.6-block.git] / drivers / pcmcia / sa1111_generic.c

/*
 * linux/drivers/pcmcia/sa1111_generic.c
 *
 * We implement the generic parts of a SA1111 PCMCIA driver.  This
 * basically means we handle everything except controlling the
 * power.  Power is machine specific...
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/slab.h>

#include <pcmcia/ss.h>

#include <mach/hardware.h>
#include <asm/hardware/sa1111.h>
#include <asm/irq.h>

#include "sa1111_generic.h"

/*
 * These are offsets from the above base.
 */
#define PCCR	0x0000
#define PCSSR	0x0004
#define PCSR	0x0008

#define PCSR_S0_READY	(1<<0)
#define PCSR_S1_READY	(1<<1)
#define PCSR_S0_DETECT	(1<<2)
#define PCSR_S1_DETECT	(1<<3)
#define PCSR_S0_VS1	(1<<4)
#define PCSR_S0_VS2	(1<<5)
#define PCSR_S1_VS1	(1<<6)
#define PCSR_S1_VS2	(1<<7)
#define PCSR_S0_WP	(1<<8)
#define PCSR_S1_WP	(1<<9)
#define PCSR_S0_BVD1	(1<<10)
#define PCSR_S0_BVD2	(1<<11)
#define PCSR_S1_BVD1	(1<<12)
#define PCSR_S1_BVD2	(1<<13)

#define PCCR_S0_RST	(1<<0)
#define PCCR_S1_RST	(1<<1)
#define PCCR_S0_FLT	(1<<2)
#define PCCR_S1_FLT	(1<<3)
#define PCCR_S0_PWAITEN	(1<<4)
#define PCCR_S1_PWAITEN	(1<<5)
#define PCCR_S0_PSE	(1<<6)
#define PCCR_S1_PSE	(1<<7)

#define PCSSR_S0_SLEEP	(1<<0)
#define PCSSR_S1_SLEEP	(1<<1)

#define IDX_IRQ_S0_READY_NINT	(0)
#define IDX_IRQ_S0_CD_VALID	(1)
#define IDX_IRQ_S0_BVD1_STSCHG	(2)
#define IDX_IRQ_S1_READY_NINT	(3)
#define IDX_IRQ_S1_CD_VALID	(4)
#define IDX_IRQ_S1_BVD1_STSCHG	(5)

static struct pcmcia_irqs irqs[] = {
	{ 0, NO_IRQ, "SA1111 PCMCIA card detect" },
	{ 0, NO_IRQ, "SA1111 PCMCIA BVD1"        },
	{ 1, NO_IRQ, "SA1111 CF card detect"     },
	{ 1, NO_IRQ, "SA1111 CF BVD1"            },
};

static int sa1111_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
}

static void sa1111_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
}

void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
{
	struct sa1111_pcmcia_socket *s = to_skt(skt);
	unsigned long status = sa1111_readl(s->dev->mapbase + PCSR);

	switch (skt->nr) {
	case 0:
		state->detect = status & PCSR_S0_DETECT ? 0 : 1;
		state->ready  = status & PCSR_S0_READY  ? 1 : 0;
		state->bvd1   = status & PCSR_S0_BVD1   ? 1 : 0;
		state->bvd2   = status & PCSR_S0_BVD2   ? 1 : 0;
		state->wrprot = status & PCSR_S0_WP     ? 1 : 0;
		state->vs_3v  = status & PCSR_S0_VS1    ? 0 : 1;
		state->vs_Xv  = status & PCSR_S0_VS2    ? 0 : 1;
		break;

	case 1:
		state->detect = status & PCSR_S1_DETECT ? 0 : 1;
		state->ready  = status & PCSR_S1_READY  ? 1 : 0;
		state->bvd1   = status & PCSR_S1_BVD1   ? 1 : 0;
		state->bvd2   = status & PCSR_S1_BVD2   ? 1 : 0;
		state->wrprot = status & PCSR_S1_WP     ? 1 : 0;
		state->vs_3v  = status & PCSR_S1_VS1    ? 0 : 1;
		state->vs_Xv  = status & PCSR_S1_VS2    ? 0 : 1;
		break;
	}
}

int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
{
	struct sa1111_pcmcia_socket *s = to_skt(skt);
	unsigned int pccr_skt_mask, pccr_set_mask, val;
	unsigned long flags;

	switch (skt->nr) {
	case 0:
		pccr_skt_mask = PCCR_S0_RST|PCCR_S0_FLT|PCCR_S0_PWAITEN|PCCR_S0_PSE;
		break;

	case 1:
		pccr_skt_mask = PCCR_S1_RST|PCCR_S1_FLT|PCCR_S1_PWAITEN|PCCR_S1_PSE;
		break;

	default:
		return -1;
	}

	pccr_set_mask = 0;

	if (state->Vcc != 0)
		pccr_set_mask |= PCCR_S0_PWAITEN|PCCR_S1_PWAITEN;
	if (state->Vcc == 50)
		pccr_set_mask |= PCCR_S0_PSE|PCCR_S1_PSE;
	if (state->flags & SS_RESET)
		pccr_set_mask |= PCCR_S0_RST|PCCR_S1_RST;
	if (state->flags & SS_OUTPUT_ENA)
		pccr_set_mask |= PCCR_S0_FLT|PCCR_S1_FLT;

	local_irq_save(flags);
	val = sa1111_readl(s->dev->mapbase + PCCR);
	val &= ~pccr_skt_mask;
	val |= pccr_set_mask & pccr_skt_mask;
	sa1111_writel(val, s->dev->mapbase + PCCR);
	local_irq_restore(flags);

	return 0;
}

void sa1111_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
}

static void sa1111_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
}

int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops,
	int (*add)(struct soc_pcmcia_socket *))
{
	struct sa1111_pcmcia_socket *s;
	int i, ret = 0;

	ops->hw_init = sa1111_pcmcia_hw_init;
	ops->hw_shutdown = sa1111_pcmcia_hw_shutdown;
	ops->socket_state = sa1111_pcmcia_socket_state;
	ops->socket_suspend = sa1111_pcmcia_socket_suspend;

	for (i = 0; i < ops->nr; i++) {
		s = kzalloc(sizeof(*s), GFP_KERNEL);
		if (!s)
			return -ENOMEM;

		s->soc.nr = ops->first + i;
		s->soc.ops = ops;
		s->soc.socket.owner = ops->owner;
		s->soc.socket.dev.parent = &dev->dev;
		s->soc.socket.pci_irq = s->soc.nr ?
				dev->irq[IDX_IRQ_S0_READY_NINT] :
				dev->irq[IDX_IRQ_S1_READY_NINT];
		s->dev = dev;

		ret = add(&s->soc);
		if (ret == 0) {
			s->next = dev_get_drvdata(&dev->dev);
			dev_set_drvdata(&dev->dev, s);
		} else
			kfree(s);
	}

	return ret;
}

static int pcmcia_probe(struct sa1111_dev *dev)
{
	void __iomem *base;
	int ret;

	ret = sa1111_enable_device(dev);
	if (ret)
		return ret;

	dev_set_drvdata(&dev->dev, NULL);

	if (!request_mem_region(dev->res.start, 512, SA1111_DRIVER_NAME(dev))) {
		sa1111_disable_device(dev);
		return -EBUSY;
	}

	base = dev->mapbase;

	/* Initialize PCMCIA IRQs */
	irqs[0].irq = dev->irq[IDX_IRQ_S0_CD_VALID];
	irqs[1].irq = dev->irq[IDX_IRQ_S0_BVD1_STSCHG];
	irqs[2].irq = dev->irq[IDX_IRQ_S1_CD_VALID];
	irqs[3].irq = dev->irq[IDX_IRQ_S1_BVD1_STSCHG];

	/*
	 * Initialise the suspend state.
	 */
	sa1111_writel(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + PCSSR);
	sa1111_writel(PCCR_S0_FLT | PCCR_S1_FLT, base + PCCR);

#ifdef CONFIG_SA1100_BADGE4
	pcmcia_badge4_init(&dev->dev);
#endif
#ifdef CONFIG_SA1100_JORNADA720
	pcmcia_jornada720_init(&dev->dev);
#endif
#ifdef CONFIG_ARCH_LUBBOCK
	pcmcia_lubbock_init(dev);
#endif
#ifdef CONFIG_ASSABET_NEPONSET
	pcmcia_neponset_init(dev);
#endif
	return 0;
}

static int __devexit pcmcia_remove(struct sa1111_dev *dev)
{
	struct sa1111_pcmcia_socket *next, *s = dev_get_drvdata(&dev->dev);

	dev_set_drvdata(&dev->dev, NULL);

	for (; s; s = next) {
		next = s->next;
		soc_pcmcia_remove_one(&s->soc);
		kfree(s);
	}

	release_mem_region(dev->res.start, 512);
	sa1111_disable_device(dev);
	return 0;
}

static struct sa1111_driver pcmcia_driver = {
	.drv = {
		.name	= "sa1111-pcmcia",
	},
	.devid		= SA1111_DEVID_PCMCIA,
	.probe		= pcmcia_probe,
	.remove		= __devexit_p(pcmcia_remove),
};

static int __init sa1111_drv_pcmcia_init(void)
{
	return sa1111_driver_register(&pcmcia_driver);
}

static void __exit sa1111_drv_pcmcia_exit(void)
{
	sa1111_driver_unregister(&pcmcia_driver);
}

fs_initcall(sa1111_drv_pcmcia_init);
module_exit(sa1111_drv_pcmcia_exit);

MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/drivers/pcmcia/sa1111_generic.c
	3	*
	4	* We implement the generic parts of a SA1111 PCMCIA driver. This
	5	* basically means we handle everything except controlling the
	6	* power. Power is machine specific...
	7	*/
1da177e4 LT	8	#include <linux/module.h>
	9	#include <linux/kernel.h>
	10	#include <linux/ioport.h>
	11	#include <linux/device.h>
	12	#include <linux/interrupt.h>
	13	#include <linux/init.h>
99730225	14	#include <linux/io.h>
5a0e3ad6	15	#include <linux/slab.h>
1da177e4 LT	16
	17	#include <pcmcia/ss.h>
	18
a09e64fb	19	#include <mach/hardware.h>
1da177e4	20	#include <asm/hardware/sa1111.h>
1da177e4 LT	21	#include <asm/irq.h>
	22
	23	#include "sa1111_generic.h"
	24
ea8c00ac RK	25	/*
	26	* These are offsets from the above base.
	27	*/
	28	#define PCCR 0x0000
	29	#define PCSSR 0x0004
	30	#define PCSR 0x0008
	31
	32	#define PCSR_S0_READY (1<<0)
	33	#define PCSR_S1_READY (1<<1)
	34	#define PCSR_S0_DETECT (1<<2)
	35	#define PCSR_S1_DETECT (1<<3)
	36	#define PCSR_S0_VS1 (1<<4)
	37	#define PCSR_S0_VS2 (1<<5)
	38	#define PCSR_S1_VS1 (1<<6)
	39	#define PCSR_S1_VS2 (1<<7)
	40	#define PCSR_S0_WP (1<<8)
	41	#define PCSR_S1_WP (1<<9)
	42	#define PCSR_S0_BVD1 (1<<10)
	43	#define PCSR_S0_BVD2 (1<<11)
	44	#define PCSR_S1_BVD1 (1<<12)
	45	#define PCSR_S1_BVD2 (1<<13)
	46
	47	#define PCCR_S0_RST (1<<0)
	48	#define PCCR_S1_RST (1<<1)
	49	#define PCCR_S0_FLT (1<<2)
	50	#define PCCR_S1_FLT (1<<3)
	51	#define PCCR_S0_PWAITEN (1<<4)
	52	#define PCCR_S1_PWAITEN (1<<5)
	53	#define PCCR_S0_PSE (1<<6)
	54	#define PCCR_S1_PSE (1<<7)
	55
	56	#define PCSSR_S0_SLEEP (1<<0)
	57	#define PCSSR_S1_SLEEP (1<<1)
	58
08fa1590 EM	59	#define IDX_IRQ_S0_READY_NINT (0)
	60	#define IDX_IRQ_S0_CD_VALID (1)
	61	#define IDX_IRQ_S0_BVD1_STSCHG (2)
	62	#define IDX_IRQ_S1_READY_NINT (3)
	63	#define IDX_IRQ_S1_CD_VALID (4)
	64	#define IDX_IRQ_S1_BVD1_STSCHG (5)
	65
1da177e4	66	static struct pcmcia_irqs irqs[] = {
08fa1590 EM	67	{ 0, NO_IRQ, "SA1111 PCMCIA card detect" },
	68	{ 0, NO_IRQ, "SA1111 PCMCIA BVD1" },
	69	{ 1, NO_IRQ, "SA1111 CF card detect" },
	70	{ 1, NO_IRQ, "SA1111 CF BVD1" },
1da177e4 LT	71	};
1da177e4 LT	72
dabd1468	73	static int sa1111_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
1da177e4	74	{
1da177e4 LT	75	return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
	76	}
	77
dabd1468	78	static void sa1111_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
1da177e4 LT	79	{
	80	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
	81	}
	82
	83	void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket skt, struct pcmcia_state state)
	84	{
701a5dc0	85	struct sa1111_pcmcia_socket *s = to_skt(skt);
ea8c00ac	86	unsigned long status = sa1111_readl(s->dev->mapbase + PCSR);
1da177e4 LT	87
	88	switch (skt->nr) {
	89	case 0:
	90	state->detect = status & PCSR_S0_DETECT ? 0 : 1;
	91	state->ready = status & PCSR_S0_READY ? 1 : 0;
	92	state->bvd1 = status & PCSR_S0_BVD1 ? 1 : 0;
	93	state->bvd2 = status & PCSR_S0_BVD2 ? 1 : 0;
	94	state->wrprot = status & PCSR_S0_WP ? 1 : 0;
	95	state->vs_3v = status & PCSR_S0_VS1 ? 0 : 1;
	96	state->vs_Xv = status & PCSR_S0_VS2 ? 0 : 1;
	97	break;
	98
	99	case 1:
	100	state->detect = status & PCSR_S1_DETECT ? 0 : 1;
	101	state->ready = status & PCSR_S1_READY ? 1 : 0;
	102	state->bvd1 = status & PCSR_S1_BVD1 ? 1 : 0;
	103	state->bvd2 = status & PCSR_S1_BVD2 ? 1 : 0;
	104	state->wrprot = status & PCSR_S1_WP ? 1 : 0;
	105	state->vs_3v = status & PCSR_S1_VS1 ? 0 : 1;
	106	state->vs_Xv = status & PCSR_S1_VS2 ? 0 : 1;
	107	break;
	108	}
	109	}
	110
	111	int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket skt, const socket_state_t state)
	112	{
701a5dc0	113	struct sa1111_pcmcia_socket *s = to_skt(skt);
1da177e4 LT	114	unsigned int pccr_skt_mask, pccr_set_mask, val;
	115	unsigned long flags;
	116
	117	switch (skt->nr) {
	118	case 0:
	119	pccr_skt_mask = PCCR_S0_RST\|PCCR_S0_FLT\|PCCR_S0_PWAITEN\|PCCR_S0_PSE;
	120	break;
	121
	122	case 1:
	123	pccr_skt_mask = PCCR_S1_RST\|PCCR_S1_FLT\|PCCR_S1_PWAITEN\|PCCR_S1_PSE;
	124	break;
	125
	126	default:
	127	return -1;
	128	}
	129
	130	pccr_set_mask = 0;
	131
	132	if (state->Vcc != 0)
	133	pccr_set_mask \|= PCCR_S0_PWAITEN\|PCCR_S1_PWAITEN;
	134	if (state->Vcc == 50)
	135	pccr_set_mask \|= PCCR_S0_PSE\|PCCR_S1_PSE;
	136	if (state->flags & SS_RESET)
	137	pccr_set_mask \|= PCCR_S0_RST\|PCCR_S1_RST;
	138	if (state->flags & SS_OUTPUT_ENA)
	139	pccr_set_mask \|= PCCR_S0_FLT\|PCCR_S1_FLT;
	140
	141	local_irq_save(flags);
ea8c00ac	142	val = sa1111_readl(s->dev->mapbase + PCCR);
1da177e4 LT	143	val &= ~pccr_skt_mask;
1da177e4 LT	144	val \|= pccr_set_mask & pccr_skt_mask;
ea8c00ac	145	sa1111_writel(val, s->dev->mapbase + PCCR);
1da177e4 LT	146	local_irq_restore(flags);
	147
	148	return 0;
	149	}
	150
	151	void sa1111_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
	152	{
	153	soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
	154	}
	155
dabd1468	156	static void sa1111_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
1da177e4 LT	157	{
	158	soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
	159	}
	160
701a5dc0 RKAL	161	int sa1111_pcmcia_add(struct sa1111_dev dev, struct pcmcia_low_level ops,
	162	int (add)(struct soc_pcmcia_socket ))
	163	{
	164	struct sa1111_pcmcia_socket *s;
	165	int i, ret = 0;
	166
dabd1468 RKAL	167	ops->hw_init = sa1111_pcmcia_hw_init;
	168	ops->hw_shutdown = sa1111_pcmcia_hw_shutdown;
	169	ops->socket_state = sa1111_pcmcia_socket_state;
	170	ops->socket_suspend = sa1111_pcmcia_socket_suspend;
	171
701a5dc0 RKAL	172	for (i = 0; i < ops->nr; i++) {
	173	s = kzalloc(sizeof(*s), GFP_KERNEL);
	174	if (!s)
	175	return -ENOMEM;
	176
	177	s->soc.nr = ops->first + i;
701a5dc0 RKAL	178	s->soc.ops = ops;
	179	s->soc.socket.owner = ops->owner;
	180	s->soc.socket.dev.parent = &dev->dev;
08fa1590 EM	181	s->soc.socket.pci_irq = s->soc.nr ?
	182	dev->irq[IDX_IRQ_S0_READY_NINT] :
	183	dev->irq[IDX_IRQ_S1_READY_NINT];
701a5dc0 RKAL	184	s->dev = dev;
	185
	186	ret = add(&s->soc);
	187	if (ret == 0) {
	188	s->next = dev_get_drvdata(&dev->dev);
	189	dev_set_drvdata(&dev->dev, s);
	190	} else
	191	kfree(s);
	192	}
	193
	194	return ret;
	195	}
	196
1da177e4 LT	197	static int pcmcia_probe(struct sa1111_dev *dev)
1da177e4 LT	198	{
f339ab3d	199	void __iomem *base;
ae99ddbc RK	200	int ret;
	201
	202	ret = sa1111_enable_device(dev);
	203	if (ret)
	204	return ret;
1da177e4	205
701a5dc0 RKAL	206	dev_set_drvdata(&dev->dev, NULL);
701a5dc0 RKAL	207
ae99ddbc RK	208	if (!request_mem_region(dev->res.start, 512, SA1111_DRIVER_NAME(dev))) {
ae99ddbc RK	209	sa1111_disable_device(dev);
1da177e4	210	return -EBUSY;
ae99ddbc	211	}
1da177e4 LT	212
	213	base = dev->mapbase;
	214
08fa1590 EM	215	/* Initialize PCMCIA IRQs */
	216	irqs[0].irq = dev->irq[IDX_IRQ_S0_CD_VALID];
	217	irqs[1].irq = dev->irq[IDX_IRQ_S0_BVD1_STSCHG];
	218	irqs[2].irq = dev->irq[IDX_IRQ_S1_CD_VALID];
	219	irqs[3].irq = dev->irq[IDX_IRQ_S1_BVD1_STSCHG];
	220
1da177e4 LT	221	/*
	222	* Initialise the suspend state.
	223	*/
ea8c00ac RK	224	sa1111_writel(PCSSR_S0_SLEEP \| PCSSR_S1_SLEEP, base + PCSSR);
ea8c00ac RK	225	sa1111_writel(PCCR_S0_FLT \| PCCR_S1_FLT, base + PCCR);
1da177e4 LT	226
	227	#ifdef CONFIG_SA1100_BADGE4
	228	pcmcia_badge4_init(&dev->dev);
	229	#endif
	230	#ifdef CONFIG_SA1100_JORNADA720
	231	pcmcia_jornada720_init(&dev->dev);
	232	#endif
	233	#ifdef CONFIG_ARCH_LUBBOCK
	234	pcmcia_lubbock_init(dev);
	235	#endif
	236	#ifdef CONFIG_ASSABET_NEPONSET
	237	pcmcia_neponset_init(dev);
	238	#endif
	239	return 0;
	240	}
	241
	242	static int __devexit pcmcia_remove(struct sa1111_dev *dev)
	243	{
701a5dc0	244	struct sa1111_pcmcia_socket next, s = dev_get_drvdata(&dev->dev);
be85458e RKAL	245
	246	dev_set_drvdata(&dev->dev, NULL);
	247
171cf94c RK	248	for (; s; s = next) {
171cf94c RK	249	next = s->next;
701a5dc0 RKAL	250	soc_pcmcia_remove_one(&s->soc);
	251	kfree(s);
	252	}
be85458e	253
1da177e4	254	release_mem_region(dev->res.start, 512);
ae99ddbc	255	sa1111_disable_device(dev);
1da177e4 LT	256	return 0;
	257	}
	258
1da177e4 LT	259	static struct sa1111_driver pcmcia_driver = {
	260	.drv = {
	261	.name = "sa1111-pcmcia",
	262	},
	263	.devid = SA1111_DEVID_PCMCIA,
	264	.probe = pcmcia_probe,
	265	.remove = __devexit_p(pcmcia_remove),
1da177e4 LT	266	};
	267
	268	static int __init sa1111_drv_pcmcia_init(void)
	269	{
	270	return sa1111_driver_register(&pcmcia_driver);
	271	}
	272
	273	static void __exit sa1111_drv_pcmcia_exit(void)
	274	{
	275	sa1111_driver_unregister(&pcmcia_driver);
	276	}
	277
f36598ae	278	fs_initcall(sa1111_drv_pcmcia_init);
1da177e4 LT	279	module_exit(sa1111_drv_pcmcia_exit);
	280
	281	MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver");
	282	MODULE_LICENSE("GPL");