[mirror_ubuntu-bionic-kernel.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/mach-types.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)
#define NUM_IRQS		(6)

void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
{
	struct sa1111_pcmcia_socket *s = to_skt(skt);
	u32 status = readl_relaxed(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);
	u32 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 = readl_relaxed(s->dev->mapbase + PCCR);
	val &= ~pccr_skt_mask;
	val |= pccr_set_mask & pccr_skt_mask;
	writel_relaxed(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;
	struct clk *clk;
	int i, ret = 0, irqs[NUM_IRQS];

	clk = devm_clk_get(&dev->dev, NULL);
	if (IS_ERR(clk))
		return PTR_ERR(clk);

	for (i = 0; i < NUM_IRQS; i++) {
		irqs[i] = sa1111_get_irq(dev, i);
		if (irqs[i] <= 0)
			return irqs[i] ? : -ENXIO;
	}

	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;
		s->soc.clk = clk;

		soc_pcmcia_init_one(&s->soc, ops, &dev->dev);
		s->dev = dev;
		if (s->soc.nr) {
			s->soc.socket.pci_irq = irqs[IDX_IRQ_S1_READY_NINT];
			s->soc.stat[SOC_STAT_CD].irq = irqs[IDX_IRQ_S1_CD_VALID];
			s->soc.stat[SOC_STAT_CD].name = "SA1111 CF card detect";
			s->soc.stat[SOC_STAT_BVD1].irq = irqs[IDX_IRQ_S1_BVD1_STSCHG];
			s->soc.stat[SOC_STAT_BVD1].name = "SA1111 CF BVD1";
		} else {
			s->soc.socket.pci_irq = irqs[IDX_IRQ_S0_READY_NINT];
			s->soc.stat[SOC_STAT_CD].irq = irqs[IDX_IRQ_S0_CD_VALID];
			s->soc.stat[SOC_STAT_CD].name = "SA1111 PCMCIA card detect";
			s->soc.stat[SOC_STAT_BVD1].irq = irqs[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.
	 */
	writel_relaxed(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + PCSSR);
	writel_relaxed(PCCR_S0_FLT | PCCR_S1_FLT, base + PCCR);

	ret = -ENODEV;
#ifdef CONFIG_SA1100_BADGE4
	if (machine_is_badge4())
		ret = pcmcia_badge4_init(dev);
#endif
#ifdef CONFIG_SA1100_JORNADA720
	if (machine_is_jornada720())
		ret = pcmcia_jornada720_init(dev);
#endif
#ifdef CONFIG_ARCH_LUBBOCK
	if (machine_is_lubbock())
		ret = pcmcia_lubbock_init(dev);
#endif
#ifdef CONFIG_ASSABET_NEPONSET
	if (machine_is_assabet())
		ret = pcmcia_neponset_init(dev);
#endif

	if (ret) {
		release_mem_region(dev->res.start, 512);
		sa1111_disable_device(dev);
	}

	return ret;
}

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>
3f8df892	21	#include <asm/mach-types.h>
1da177e4 LT	22	#include <asm/irq.h>
	23
	24	#include "sa1111_generic.h"
	25
ea8c00ac RK	26	/*
	27	* These are offsets from the above base.
	28	*/
	29	#define PCCR 0x0000
	30	#define PCSSR 0x0004
	31	#define PCSR 0x0008
	32
	33	#define PCSR_S0_READY (1<<0)
	34	#define PCSR_S1_READY (1<<1)
	35	#define PCSR_S0_DETECT (1<<2)
	36	#define PCSR_S1_DETECT (1<<3)
	37	#define PCSR_S0_VS1 (1<<4)
	38	#define PCSR_S0_VS2 (1<<5)
	39	#define PCSR_S1_VS1 (1<<6)
	40	#define PCSR_S1_VS2 (1<<7)
	41	#define PCSR_S0_WP (1<<8)
	42	#define PCSR_S1_WP (1<<9)
	43	#define PCSR_S0_BVD1 (1<<10)
	44	#define PCSR_S0_BVD2 (1<<11)
	45	#define PCSR_S1_BVD1 (1<<12)
	46	#define PCSR_S1_BVD2 (1<<13)
	47
	48	#define PCCR_S0_RST (1<<0)
	49	#define PCCR_S1_RST (1<<1)
	50	#define PCCR_S0_FLT (1<<2)
	51	#define PCCR_S1_FLT (1<<3)
	52	#define PCCR_S0_PWAITEN (1<<4)
	53	#define PCCR_S1_PWAITEN (1<<5)
	54	#define PCCR_S0_PSE (1<<6)
	55	#define PCCR_S1_PSE (1<<7)
	56
	57	#define PCSSR_S0_SLEEP (1<<0)
	58	#define PCSSR_S1_SLEEP (1<<1)
	59
08fa1590 EM	60	#define IDX_IRQ_S0_READY_NINT (0)
	61	#define IDX_IRQ_S0_CD_VALID (1)
	62	#define IDX_IRQ_S0_BVD1_STSCHG (2)
	63	#define IDX_IRQ_S1_READY_NINT (3)
	64	#define IDX_IRQ_S1_CD_VALID (4)
	65	#define IDX_IRQ_S1_BVD1_STSCHG (5)
7170a312	66	#define NUM_IRQS (6)
08fa1590	67
1da177e4 LT	68	void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket skt, struct pcmcia_state state)
1da177e4 LT	69	{
701a5dc0	70	struct sa1111_pcmcia_socket *s = to_skt(skt);
de854b33	71	u32 status = readl_relaxed(s->dev->mapbase + PCSR);
1da177e4 LT	72
	73	switch (skt->nr) {
	74	case 0:
	75	state->detect = status & PCSR_S0_DETECT ? 0 : 1;
	76	state->ready = status & PCSR_S0_READY ? 1 : 0;
	77	state->bvd1 = status & PCSR_S0_BVD1 ? 1 : 0;
	78	state->bvd2 = status & PCSR_S0_BVD2 ? 1 : 0;
	79	state->wrprot = status & PCSR_S0_WP ? 1 : 0;
	80	state->vs_3v = status & PCSR_S0_VS1 ? 0 : 1;
	81	state->vs_Xv = status & PCSR_S0_VS2 ? 0 : 1;
	82	break;
	83
	84	case 1:
	85	state->detect = status & PCSR_S1_DETECT ? 0 : 1;
	86	state->ready = status & PCSR_S1_READY ? 1 : 0;
	87	state->bvd1 = status & PCSR_S1_BVD1 ? 1 : 0;
	88	state->bvd2 = status & PCSR_S1_BVD2 ? 1 : 0;
	89	state->wrprot = status & PCSR_S1_WP ? 1 : 0;
	90	state->vs_3v = status & PCSR_S1_VS1 ? 0 : 1;
	91	state->vs_Xv = status & PCSR_S1_VS2 ? 0 : 1;
	92	break;
	93	}
	94	}
	95
	96	int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket skt, const socket_state_t state)
	97	{
701a5dc0	98	struct sa1111_pcmcia_socket *s = to_skt(skt);
de854b33	99	u32 pccr_skt_mask, pccr_set_mask, val;
1da177e4 LT	100	unsigned long flags;
	101
	102	switch (skt->nr) {
	103	case 0:
	104	pccr_skt_mask = PCCR_S0_RST\|PCCR_S0_FLT\|PCCR_S0_PWAITEN\|PCCR_S0_PSE;
	105	break;
	106
	107	case 1:
	108	pccr_skt_mask = PCCR_S1_RST\|PCCR_S1_FLT\|PCCR_S1_PWAITEN\|PCCR_S1_PSE;
	109	break;
	110
	111	default:
	112	return -1;
	113	}
	114
	115	pccr_set_mask = 0;
	116
	117	if (state->Vcc != 0)
	118	pccr_set_mask \|= PCCR_S0_PWAITEN\|PCCR_S1_PWAITEN;
	119	if (state->Vcc == 50)
	120	pccr_set_mask \|= PCCR_S0_PSE\|PCCR_S1_PSE;
	121	if (state->flags & SS_RESET)
	122	pccr_set_mask \|= PCCR_S0_RST\|PCCR_S1_RST;
	123	if (state->flags & SS_OUTPUT_ENA)
	124	pccr_set_mask \|= PCCR_S0_FLT\|PCCR_S1_FLT;
	125
	126	local_irq_save(flags);
de854b33	127	val = readl_relaxed(s->dev->mapbase + PCCR);
1da177e4 LT	128	val &= ~pccr_skt_mask;
1da177e4 LT	129	val \|= pccr_set_mask & pccr_skt_mask;
de854b33	130	writel_relaxed(val, s->dev->mapbase + PCCR);
1da177e4 LT	131	local_irq_restore(flags);
	132
	133	return 0;
	134	}
	135
701a5dc0 RKAL	136	int sa1111_pcmcia_add(struct sa1111_dev dev, struct pcmcia_low_level ops,
	137	int (add)(struct soc_pcmcia_socket ))
	138	{
	139	struct sa1111_pcmcia_socket *s;
321ae964	140	struct clk *clk;
7170a312	141	int i, ret = 0, irqs[NUM_IRQS];
701a5dc0	142
321ae964 RK	143	clk = devm_clk_get(&dev->dev, NULL);
	144	if (IS_ERR(clk))
	145	return PTR_ERR(clk);
	146
7170a312 RK	147	for (i = 0; i < NUM_IRQS; i++) {
	148	irqs[i] = sa1111_get_irq(dev, i);
	149	if (irqs[i] <= 0)
	150	return irqs[i] ? : -ENXIO;
	151	}
	152
dabd1468	153	ops->socket_state = sa1111_pcmcia_socket_state;
dabd1468	154
701a5dc0 RKAL	155	for (i = 0; i < ops->nr; i++) {
	156	s = kzalloc(sizeof(*s), GFP_KERNEL);
	157	if (!s)
	158	return -ENOMEM;
	159
	160	s->soc.nr = ops->first + i;
321ae964 RK	161	s->soc.clk = clk;
321ae964 RK	162
e0d21178	163	soc_pcmcia_init_one(&s->soc, ops, &dev->dev);
701a5dc0	164	s->dev = dev;
81f33c65	165	if (s->soc.nr) {
7170a312 RK	166	s->soc.socket.pci_irq = irqs[IDX_IRQ_S1_READY_NINT];
7170a312 RK	167	s->soc.stat[SOC_STAT_CD].irq = irqs[IDX_IRQ_S1_CD_VALID];
81f33c65	168	s->soc.stat[SOC_STAT_CD].name = "SA1111 CF card detect";
7170a312	169	s->soc.stat[SOC_STAT_BVD1].irq = irqs[IDX_IRQ_S1_BVD1_STSCHG];
81f33c65 RK	170	s->soc.stat[SOC_STAT_BVD1].name = "SA1111 CF BVD1";
81f33c65 RK	171	} else {
7170a312 RK	172	s->soc.socket.pci_irq = irqs[IDX_IRQ_S0_READY_NINT];
7170a312 RK	173	s->soc.stat[SOC_STAT_CD].irq = irqs[IDX_IRQ_S0_CD_VALID];
81f33c65	174	s->soc.stat[SOC_STAT_CD].name = "SA1111 PCMCIA card detect";
7170a312	175	s->soc.stat[SOC_STAT_BVD1].irq = irqs[IDX_IRQ_S0_BVD1_STSCHG];
81f33c65 RK	176	s->soc.stat[SOC_STAT_BVD1].name = "SA1111 PCMCIA BVD1";
81f33c65 RK	177	}
701a5dc0 RKAL	178
	179	ret = add(&s->soc);
	180	if (ret == 0) {
	181	s->next = dev_get_drvdata(&dev->dev);
	182	dev_set_drvdata(&dev->dev, s);
	183	} else
	184	kfree(s);
	185	}
	186
	187	return ret;
	188	}
	189
1da177e4 LT	190	static int pcmcia_probe(struct sa1111_dev *dev)
1da177e4 LT	191	{
f339ab3d	192	void __iomem *base;
ae99ddbc RK	193	int ret;
	194
	195	ret = sa1111_enable_device(dev);
	196	if (ret)
	197	return ret;
1da177e4	198
701a5dc0 RKAL	199	dev_set_drvdata(&dev->dev, NULL);
701a5dc0 RKAL	200
ae99ddbc RK	201	if (!request_mem_region(dev->res.start, 512, SA1111_DRIVER_NAME(dev))) {
ae99ddbc RK	202	sa1111_disable_device(dev);
1da177e4	203	return -EBUSY;
ae99ddbc	204	}
1da177e4 LT	205
	206	base = dev->mapbase;
	207
	208	/*
	209	* Initialise the suspend state.
	210	*/
de854b33 RK	211	writel_relaxed(PCSSR_S0_SLEEP \| PCSSR_S1_SLEEP, base + PCSSR);
de854b33 RK	212	writel_relaxed(PCCR_S0_FLT \| PCCR_S1_FLT, base + PCCR);
1da177e4	213
3f8df892	214	ret = -ENODEV;
1da177e4	215	#ifdef CONFIG_SA1100_BADGE4
3f8df892 RK	216	if (machine_is_badge4())
3f8df892 RK	217	ret = pcmcia_badge4_init(dev);
1da177e4 LT	218	#endif
1da177e4 LT	219	#ifdef CONFIG_SA1100_JORNADA720
3f8df892 RK	220	if (machine_is_jornada720())
3f8df892 RK	221	ret = pcmcia_jornada720_init(dev);
1da177e4 LT	222	#endif
1da177e4 LT	223	#ifdef CONFIG_ARCH_LUBBOCK
3f8df892 RK	224	if (machine_is_lubbock())
3f8df892 RK	225	ret = pcmcia_lubbock_init(dev);
1da177e4 LT	226	#endif
1da177e4 LT	227	#ifdef CONFIG_ASSABET_NEPONSET
3f8df892 RK	228	if (machine_is_assabet())
3f8df892 RK	229	ret = pcmcia_neponset_init(dev);
1da177e4	230	#endif
3f8df892 RK	231
	232	if (ret) {
	233	release_mem_region(dev->res.start, 512);
	234	sa1111_disable_device(dev);
	235	}
	236
	237	return ret;
1da177e4 LT	238	}
1da177e4 LT	239
e765a02c	240	static int pcmcia_remove(struct sa1111_dev *dev)
1da177e4	241	{
701a5dc0	242	struct sa1111_pcmcia_socket next, s = dev_get_drvdata(&dev->dev);
be85458e RKAL	243
	244	dev_set_drvdata(&dev->dev, NULL);
	245
171cf94c RK	246	for (; s; s = next) {
171cf94c RK	247	next = s->next;
701a5dc0 RKAL	248	soc_pcmcia_remove_one(&s->soc);
	249	kfree(s);
	250	}
be85458e	251
1da177e4	252	release_mem_region(dev->res.start, 512);
ae99ddbc	253	sa1111_disable_device(dev);
1da177e4 LT	254	return 0;
	255	}
	256
1da177e4 LT	257	static struct sa1111_driver pcmcia_driver = {
	258	.drv = {
	259	.name = "sa1111-pcmcia",
	260	},
	261	.devid = SA1111_DEVID_PCMCIA,
	262	.probe = pcmcia_probe,
96364e3a	263	.remove = pcmcia_remove,
1da177e4 LT	264	};
	265
	266	static int __init sa1111_drv_pcmcia_init(void)
	267	{
	268	return sa1111_driver_register(&pcmcia_driver);
	269	}
	270
	271	static void __exit sa1111_drv_pcmcia_exit(void)
	272	{
	273	sa1111_driver_unregister(&pcmcia_driver);
	274	}
	275
f36598ae	276	fs_initcall(sa1111_drv_pcmcia_init);
1da177e4 LT	277	module_exit(sa1111_drv_pcmcia_exit);
	278
	279	MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver");
	280	MODULE_LICENSE("GPL");