[GitHub/mt8127/android_kernel_alcatel_ttab.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)

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;
}

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->socket_state = sa1111_pcmcia_socket_state;

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

		s->soc.nr = ops->first + i;
		soc_pcmcia_init_one(&s->soc, ops, &dev->dev);
		s->dev = dev;
		if (s->soc.nr) {
			s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S1_READY_NINT];
			s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S1_CD_VALID];
			s->soc.stat[SOC_STAT_CD].name = "SA1111 CF card detect";
			s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S1_BVD1_STSCHG];
			s->soc.stat[SOC_STAT_BVD1].name = "SA1111 CF BVD1";
		} else {
			s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S0_READY_NINT];
			s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S0_CD_VALID];
			s->soc.stat[SOC_STAT_CD].name = "SA1111 PCMCIA card detect";
			s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S0_BVD1_STSCHG];
			s->soc.stat[SOC_STAT_BVD1].name = "SA1111 PCMCIA BVD1";
		}

		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;

	/*
	 * 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 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		= 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 LT	66	void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket skt, struct pcmcia_state state)
1da177e4 LT	67	{
701a5dc0	68	struct sa1111_pcmcia_socket *s = to_skt(skt);
ea8c00ac	69	unsigned long status = sa1111_readl(s->dev->mapbase + PCSR);
1da177e4 LT	70
	71	switch (skt->nr) {
	72	case 0:
	73	state->detect = status & PCSR_S0_DETECT ? 0 : 1;
	74	state->ready = status & PCSR_S0_READY ? 1 : 0;
	75	state->bvd1 = status & PCSR_S0_BVD1 ? 1 : 0;
	76	state->bvd2 = status & PCSR_S0_BVD2 ? 1 : 0;
	77	state->wrprot = status & PCSR_S0_WP ? 1 : 0;
	78	state->vs_3v = status & PCSR_S0_VS1 ? 0 : 1;
	79	state->vs_Xv = status & PCSR_S0_VS2 ? 0 : 1;
	80	break;
	81
	82	case 1:
	83	state->detect = status & PCSR_S1_DETECT ? 0 : 1;
	84	state->ready = status & PCSR_S1_READY ? 1 : 0;
	85	state->bvd1 = status & PCSR_S1_BVD1 ? 1 : 0;
	86	state->bvd2 = status & PCSR_S1_BVD2 ? 1 : 0;
	87	state->wrprot = status & PCSR_S1_WP ? 1 : 0;
	88	state->vs_3v = status & PCSR_S1_VS1 ? 0 : 1;
	89	state->vs_Xv = status & PCSR_S1_VS2 ? 0 : 1;
	90	break;
	91	}
	92	}
	93
	94	int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket skt, const socket_state_t state)
	95	{
701a5dc0	96	struct sa1111_pcmcia_socket *s = to_skt(skt);
1da177e4 LT	97	unsigned int pccr_skt_mask, pccr_set_mask, val;
	98	unsigned long flags;
	99
	100	switch (skt->nr) {
	101	case 0:
	102	pccr_skt_mask = PCCR_S0_RST\|PCCR_S0_FLT\|PCCR_S0_PWAITEN\|PCCR_S0_PSE;
	103	break;
	104
	105	case 1:
	106	pccr_skt_mask = PCCR_S1_RST\|PCCR_S1_FLT\|PCCR_S1_PWAITEN\|PCCR_S1_PSE;
	107	break;
	108
	109	default:
	110	return -1;
	111	}
	112
	113	pccr_set_mask = 0;
	114
	115	if (state->Vcc != 0)
	116	pccr_set_mask \|= PCCR_S0_PWAITEN\|PCCR_S1_PWAITEN;
	117	if (state->Vcc == 50)
	118	pccr_set_mask \|= PCCR_S0_PSE\|PCCR_S1_PSE;
	119	if (state->flags & SS_RESET)
	120	pccr_set_mask \|= PCCR_S0_RST\|PCCR_S1_RST;
	121	if (state->flags & SS_OUTPUT_ENA)
	122	pccr_set_mask \|= PCCR_S0_FLT\|PCCR_S1_FLT;
	123
	124	local_irq_save(flags);
ea8c00ac	125	val = sa1111_readl(s->dev->mapbase + PCCR);
1da177e4 LT	126	val &= ~pccr_skt_mask;
1da177e4 LT	127	val \|= pccr_set_mask & pccr_skt_mask;
ea8c00ac	128	sa1111_writel(val, s->dev->mapbase + PCCR);
1da177e4 LT	129	local_irq_restore(flags);
	130
	131	return 0;
	132	}
	133
701a5dc0 RKAL	134	int sa1111_pcmcia_add(struct sa1111_dev dev, struct pcmcia_low_level ops,
	135	int (add)(struct soc_pcmcia_socket ))
	136	{
	137	struct sa1111_pcmcia_socket *s;
	138	int i, ret = 0;
	139
dabd1468	140	ops->socket_state = sa1111_pcmcia_socket_state;
dabd1468	141
701a5dc0 RKAL	142	for (i = 0; i < ops->nr; i++) {
	143	s = kzalloc(sizeof(*s), GFP_KERNEL);
	144	if (!s)
	145	return -ENOMEM;
	146
	147	s->soc.nr = ops->first + i;
e0d21178	148	soc_pcmcia_init_one(&s->soc, ops, &dev->dev);
701a5dc0	149	s->dev = dev;
81f33c65 RK	150	if (s->soc.nr) {
	151	s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S1_READY_NINT];
	152	s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S1_CD_VALID];
	153	s->soc.stat[SOC_STAT_CD].name = "SA1111 CF card detect";
	154	s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S1_BVD1_STSCHG];
	155	s->soc.stat[SOC_STAT_BVD1].name = "SA1111 CF BVD1";
	156	} else {
	157	s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S0_READY_NINT];
	158	s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S0_CD_VALID];
	159	s->soc.stat[SOC_STAT_CD].name = "SA1111 PCMCIA card detect";
	160	s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S0_BVD1_STSCHG];
	161	s->soc.stat[SOC_STAT_BVD1].name = "SA1111 PCMCIA BVD1";
	162	}
701a5dc0 RKAL	163
	164	ret = add(&s->soc);
	165	if (ret == 0) {
	166	s->next = dev_get_drvdata(&dev->dev);
	167	dev_set_drvdata(&dev->dev, s);
	168	} else
	169	kfree(s);
	170	}
	171
	172	return ret;
	173	}
	174
1da177e4 LT	175	static int pcmcia_probe(struct sa1111_dev *dev)
1da177e4 LT	176	{
f339ab3d	177	void __iomem *base;
ae99ddbc RK	178	int ret;
	179
	180	ret = sa1111_enable_device(dev);
	181	if (ret)
	182	return ret;
1da177e4	183
701a5dc0 RKAL	184	dev_set_drvdata(&dev->dev, NULL);
701a5dc0 RKAL	185
ae99ddbc RK	186	if (!request_mem_region(dev->res.start, 512, SA1111_DRIVER_NAME(dev))) {
ae99ddbc RK	187	sa1111_disable_device(dev);
1da177e4	188	return -EBUSY;
ae99ddbc	189	}
1da177e4 LT	190
	191	base = dev->mapbase;
	192
	193	/*
	194	* Initialise the suspend state.
	195	*/
ea8c00ac RK	196	sa1111_writel(PCSSR_S0_SLEEP \| PCSSR_S1_SLEEP, base + PCSSR);
ea8c00ac RK	197	sa1111_writel(PCCR_S0_FLT \| PCCR_S1_FLT, base + PCCR);
1da177e4 LT	198
	199	#ifdef CONFIG_SA1100_BADGE4
	200	pcmcia_badge4_init(&dev->dev);
	201	#endif
	202	#ifdef CONFIG_SA1100_JORNADA720
	203	pcmcia_jornada720_init(&dev->dev);
	204	#endif
	205	#ifdef CONFIG_ARCH_LUBBOCK
	206	pcmcia_lubbock_init(dev);
	207	#endif
	208	#ifdef CONFIG_ASSABET_NEPONSET
	209	pcmcia_neponset_init(dev);
	210	#endif
	211	return 0;
	212	}
	213
e765a02c	214	static int pcmcia_remove(struct sa1111_dev *dev)
1da177e4	215	{
701a5dc0	216	struct sa1111_pcmcia_socket next, s = dev_get_drvdata(&dev->dev);
be85458e RKAL	217
	218	dev_set_drvdata(&dev->dev, NULL);
	219
171cf94c RK	220	for (; s; s = next) {
171cf94c RK	221	next = s->next;
701a5dc0 RKAL	222	soc_pcmcia_remove_one(&s->soc);
	223	kfree(s);
	224	}
be85458e	225
1da177e4	226	release_mem_region(dev->res.start, 512);
ae99ddbc	227	sa1111_disable_device(dev);
1da177e4 LT	228	return 0;
	229	}
	230
1da177e4 LT	231	static struct sa1111_driver pcmcia_driver = {
	232	.drv = {
	233	.name = "sa1111-pcmcia",
	234	},
	235	.devid = SA1111_DEVID_PCMCIA,
	236	.probe = pcmcia_probe,
96364e3a	237	.remove = pcmcia_remove,
1da177e4 LT	238	};
	239
	240	static int __init sa1111_drv_pcmcia_init(void)
	241	{
	242	return sa1111_driver_register(&pcmcia_driver);
	243	}
	244
	245	static void __exit sa1111_drv_pcmcia_exit(void)
	246	{
	247	sa1111_driver_unregister(&pcmcia_driver);
	248	}
	249
f36598ae	250	fs_initcall(sa1111_drv_pcmcia_init);
1da177e4 LT	251	module_exit(sa1111_drv_pcmcia_exit);
	252
	253	MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver");
	254	MODULE_LICENSE("GPL");