[net-next-2.6.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"

#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 + SA1111_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 + SA1111_PCCR);
	val &= ~pccr_skt_mask;
	val |= pccr_set_mask & pccr_skt_mask;
	sa1111_writel(val, s->dev->mapbase + SA1111_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;

	dev_set_drvdata(&dev->dev, NULL);

	if (!request_mem_region(dev->res.start, 512,
				SA1111_DRIVER_NAME(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 + SA1111_PCSSR);
	sa1111_writel(PCCR_S0_FLT | PCCR_S1_FLT, base + SA1111_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 (; next = s->next, s; s = next) {
		soc_pcmcia_remove_one(&s->soc);
		kfree(s);
	}

	release_mem_region(dev->res.start, 512);
	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
08fa1590 EM	25	#define IDX_IRQ_S0_READY_NINT (0)
	26	#define IDX_IRQ_S0_CD_VALID (1)
	27	#define IDX_IRQ_S0_BVD1_STSCHG (2)
	28	#define IDX_IRQ_S1_READY_NINT (3)
	29	#define IDX_IRQ_S1_CD_VALID (4)
	30	#define IDX_IRQ_S1_BVD1_STSCHG (5)
	31
1da177e4	32	static struct pcmcia_irqs irqs[] = {
08fa1590 EM	33	{ 0, NO_IRQ, "SA1111 PCMCIA card detect" },
	34	{ 0, NO_IRQ, "SA1111 PCMCIA BVD1" },
	35	{ 1, NO_IRQ, "SA1111 CF card detect" },
	36	{ 1, NO_IRQ, "SA1111 CF BVD1" },
1da177e4 LT	37	};
1da177e4 LT	38
dabd1468	39	static int sa1111_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
1da177e4	40	{
1da177e4 LT	41	return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
	42	}
	43
dabd1468	44	static void sa1111_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
1da177e4 LT	45	{
	46	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
	47	}
	48
	49	void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket skt, struct pcmcia_state state)
	50	{
701a5dc0 RKAL	51	struct sa1111_pcmcia_socket *s = to_skt(skt);
701a5dc0 RKAL	52	unsigned long status = sa1111_readl(s->dev->mapbase + SA1111_PCSR);
1da177e4 LT	53
	54	switch (skt->nr) {
	55	case 0:
	56	state->detect = status & PCSR_S0_DETECT ? 0 : 1;
	57	state->ready = status & PCSR_S0_READY ? 1 : 0;
	58	state->bvd1 = status & PCSR_S0_BVD1 ? 1 : 0;
	59	state->bvd2 = status & PCSR_S0_BVD2 ? 1 : 0;
	60	state->wrprot = status & PCSR_S0_WP ? 1 : 0;
	61	state->vs_3v = status & PCSR_S0_VS1 ? 0 : 1;
	62	state->vs_Xv = status & PCSR_S0_VS2 ? 0 : 1;
	63	break;
	64
	65	case 1:
	66	state->detect = status & PCSR_S1_DETECT ? 0 : 1;
	67	state->ready = status & PCSR_S1_READY ? 1 : 0;
	68	state->bvd1 = status & PCSR_S1_BVD1 ? 1 : 0;
	69	state->bvd2 = status & PCSR_S1_BVD2 ? 1 : 0;
	70	state->wrprot = status & PCSR_S1_WP ? 1 : 0;
	71	state->vs_3v = status & PCSR_S1_VS1 ? 0 : 1;
	72	state->vs_Xv = status & PCSR_S1_VS2 ? 0 : 1;
	73	break;
	74	}
	75	}
	76
	77	int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket skt, const socket_state_t state)
	78	{
701a5dc0	79	struct sa1111_pcmcia_socket *s = to_skt(skt);
1da177e4 LT	80	unsigned int pccr_skt_mask, pccr_set_mask, val;
	81	unsigned long flags;
	82
	83	switch (skt->nr) {
	84	case 0:
	85	pccr_skt_mask = PCCR_S0_RST\|PCCR_S0_FLT\|PCCR_S0_PWAITEN\|PCCR_S0_PSE;
	86	break;
	87
	88	case 1:
	89	pccr_skt_mask = PCCR_S1_RST\|PCCR_S1_FLT\|PCCR_S1_PWAITEN\|PCCR_S1_PSE;
	90	break;
	91
	92	default:
	93	return -1;
	94	}
	95
	96	pccr_set_mask = 0;
	97
	98	if (state->Vcc != 0)
	99	pccr_set_mask \|= PCCR_S0_PWAITEN\|PCCR_S1_PWAITEN;
	100	if (state->Vcc == 50)
	101	pccr_set_mask \|= PCCR_S0_PSE\|PCCR_S1_PSE;
	102	if (state->flags & SS_RESET)
	103	pccr_set_mask \|= PCCR_S0_RST\|PCCR_S1_RST;
	104	if (state->flags & SS_OUTPUT_ENA)
	105	pccr_set_mask \|= PCCR_S0_FLT\|PCCR_S1_FLT;
	106
	107	local_irq_save(flags);
701a5dc0	108	val = sa1111_readl(s->dev->mapbase + SA1111_PCCR);
1da177e4 LT	109	val &= ~pccr_skt_mask;
1da177e4 LT	110	val \|= pccr_set_mask & pccr_skt_mask;
701a5dc0	111	sa1111_writel(val, s->dev->mapbase + SA1111_PCCR);
1da177e4 LT	112	local_irq_restore(flags);
	113
	114	return 0;
	115	}
	116
	117	void sa1111_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
	118	{
	119	soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
	120	}
	121
dabd1468	122	static void sa1111_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
1da177e4 LT	123	{
	124	soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
	125	}
	126
701a5dc0 RKAL	127	int sa1111_pcmcia_add(struct sa1111_dev dev, struct pcmcia_low_level ops,
	128	int (add)(struct soc_pcmcia_socket ))
	129	{
	130	struct sa1111_pcmcia_socket *s;
	131	int i, ret = 0;
	132
dabd1468 RKAL	133	ops->hw_init = sa1111_pcmcia_hw_init;
	134	ops->hw_shutdown = sa1111_pcmcia_hw_shutdown;
	135	ops->socket_state = sa1111_pcmcia_socket_state;
	136	ops->socket_suspend = sa1111_pcmcia_socket_suspend;
	137
701a5dc0 RKAL	138	for (i = 0; i < ops->nr; i++) {
	139	s = kzalloc(sizeof(*s), GFP_KERNEL);
	140	if (!s)
	141	return -ENOMEM;
	142
	143	s->soc.nr = ops->first + i;
701a5dc0 RKAL	144	s->soc.ops = ops;
	145	s->soc.socket.owner = ops->owner;
	146	s->soc.socket.dev.parent = &dev->dev;
08fa1590 EM	147	s->soc.socket.pci_irq = s->soc.nr ?
	148	dev->irq[IDX_IRQ_S0_READY_NINT] :
	149	dev->irq[IDX_IRQ_S1_READY_NINT];
701a5dc0 RKAL	150	s->dev = dev;
	151
	152	ret = add(&s->soc);
	153	if (ret == 0) {
	154	s->next = dev_get_drvdata(&dev->dev);
	155	dev_set_drvdata(&dev->dev, s);
	156	} else
	157	kfree(s);
	158	}
	159
	160	return ret;
	161	}
	162
1da177e4 LT	163	static int pcmcia_probe(struct sa1111_dev *dev)
1da177e4 LT	164	{
f339ab3d	165	void __iomem *base;
1da177e4	166
701a5dc0 RKAL	167	dev_set_drvdata(&dev->dev, NULL);
701a5dc0 RKAL	168
1da177e4 LT	169	if (!request_mem_region(dev->res.start, 512,
	170	SA1111_DRIVER_NAME(dev)))
	171	return -EBUSY;
	172
	173	base = dev->mapbase;
	174
08fa1590 EM	175	/* Initialize PCMCIA IRQs */
	176	irqs[0].irq = dev->irq[IDX_IRQ_S0_CD_VALID];
	177	irqs[1].irq = dev->irq[IDX_IRQ_S0_BVD1_STSCHG];
	178	irqs[2].irq = dev->irq[IDX_IRQ_S1_CD_VALID];
	179	irqs[3].irq = dev->irq[IDX_IRQ_S1_BVD1_STSCHG];
	180
1da177e4 LT	181	/*
	182	* Initialise the suspend state.
	183	*/
	184	sa1111_writel(PCSSR_S0_SLEEP \| PCSSR_S1_SLEEP, base + SA1111_PCSSR);
	185	sa1111_writel(PCCR_S0_FLT \| PCCR_S1_FLT, base + SA1111_PCCR);
	186
	187	#ifdef CONFIG_SA1100_BADGE4
	188	pcmcia_badge4_init(&dev->dev);
	189	#endif
	190	#ifdef CONFIG_SA1100_JORNADA720
	191	pcmcia_jornada720_init(&dev->dev);
	192	#endif
	193	#ifdef CONFIG_ARCH_LUBBOCK
	194	pcmcia_lubbock_init(dev);
	195	#endif
	196	#ifdef CONFIG_ASSABET_NEPONSET
	197	pcmcia_neponset_init(dev);
	198	#endif
	199	return 0;
	200	}
	201
	202	static int __devexit pcmcia_remove(struct sa1111_dev *dev)
	203	{
701a5dc0	204	struct sa1111_pcmcia_socket next, s = dev_get_drvdata(&dev->dev);
be85458e RKAL	205
	206	dev_set_drvdata(&dev->dev, NULL);
	207
701a5dc0 RKAL	208	for (; next = s->next, s; s = next) {
	209	soc_pcmcia_remove_one(&s->soc);
	210	kfree(s);
	211	}
be85458e	212
1da177e4 LT	213	release_mem_region(dev->res.start, 512);
	214	return 0;
	215	}
	216
1da177e4 LT	217	static struct sa1111_driver pcmcia_driver = {
	218	.drv = {
	219	.name = "sa1111-pcmcia",
	220	},
	221	.devid = SA1111_DEVID_PCMCIA,
	222	.probe = pcmcia_probe,
	223	.remove = __devexit_p(pcmcia_remove),
1da177e4 LT	224	};
	225
	226	static int __init sa1111_drv_pcmcia_init(void)
	227	{
	228	return sa1111_driver_register(&pcmcia_driver);
	229	}
	230
	231	static void __exit sa1111_drv_pcmcia_exit(void)
	232	{
	233	sa1111_driver_unregister(&pcmcia_driver);
	234	}
	235
f36598ae	236	fs_initcall(sa1111_drv_pcmcia_init);
1da177e4 LT	237	module_exit(sa1111_drv_pcmcia_exit);
	238
	239	MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver");
	240	MODULE_LICENSE("GPL");