[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / pcmcia / vrc4171_card.c

/*
 * vrc4171_card.c, NEC VRC4171 Card Controller driver for Socket Services.
 *
 * Copyright (C) 2003-2005  Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
 *
 *  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.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/platform_device.h>

#include <asm/io.h>

#include <pcmcia/ss.h>

#include "i82365.h"

MODULE_DESCRIPTION("NEC VRC4171 Card Controllers driver for Socket Services");
MODULE_AUTHOR("Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>");
MODULE_LICENSE("GPL");

#define CARD_MAX_SLOTS		2
#define CARD_SLOTA		0
#define CARD_SLOTB		1
#define CARD_SLOTB_OFFSET	0x40

#define CARD_MEM_START		0x10000000
#define CARD_MEM_END		0x13ffffff
#define CARD_MAX_MEM_OFFSET	0x3ffffff
#define CARD_MAX_MEM_SPEED	1000

#define CARD_CONTROLLER_INDEX	0x03e0
#define CARD_CONTROLLER_DATA	0x03e1
 /* Power register */
  #define VPP_GET_VCC		0x01
  #define POWER_ENABLE		0x10
 #define CARD_VOLTAGE_SENSE	0x1f
  #define VCC_3VORXV_CAPABLE	0x00
  #define VCC_XV_ONLY		0x01
  #define VCC_3V_CAPABLE	0x02
  #define VCC_5V_ONLY		0x03
 #define CARD_VOLTAGE_SELECT	0x2f
  #define VCC_3V		0x01
  #define VCC_5V		0x00
  #define VCC_XV		0x02
  #define VCC_STATUS_3V		0x02
  #define VCC_STATUS_5V		0x01
  #define VCC_STATUS_XV		0x03
 #define GLOBAL_CONTROL		0x1e
  #define EXWRBK		0x04
  #define IRQPM_EN		0x08
  #define CLRPMIRQ		0x10

#define INTERRUPT_STATUS	0x05fa
 #define IRQ_A			0x02
 #define IRQ_B			0x04

#define CONFIGURATION1		0x05fe
 #define SLOTB_CONFIG		0xc000
 #define SLOTB_NONE		0x0000
 #define SLOTB_PCCARD		0x4000
 #define SLOTB_CF		0x8000
 #define SLOTB_FLASHROM		0xc000

#define CARD_CONTROLLER_START	CARD_CONTROLLER_INDEX
#define CARD_CONTROLLER_END	CARD_CONTROLLER_DATA

#define IO_MAX_MAPS	2
#define MEM_MAX_MAPS	5

typedef enum {
	SLOT_PROBE = 0,
	SLOT_NOPROBE_IO,
	SLOT_NOPROBE_MEM,
	SLOT_NOPROBE_ALL,
	SLOT_INITIALIZED,
} vrc4171_slot_t;

typedef enum {
	SLOTB_IS_NONE,
	SLOTB_IS_PCCARD,
	SLOTB_IS_CF,
	SLOTB_IS_FLASHROM,
} vrc4171_slotb_t;

typedef struct vrc4171_socket {
	vrc4171_slot_t slot;
	struct pcmcia_socket pcmcia_socket;
	char name[24];
	int csc_irq;
	int io_irq;
} vrc4171_socket_t;

static vrc4171_socket_t vrc4171_sockets[CARD_MAX_SLOTS];
static vrc4171_slotb_t vrc4171_slotb = SLOTB_IS_NONE;
static char vrc4171_card_name[] = "NEC VRC4171 Card Controller";
static unsigned int vrc4171_irq;
static uint16_t vrc4171_irq_mask = 0xdeb8;

static struct resource vrc4171_card_resource[3] = {
	{	.name		= vrc4171_card_name,
		.start		= CARD_CONTROLLER_START,
		.end		= CARD_CONTROLLER_END,
		.flags		= IORESOURCE_IO,	},
	{	.name		= vrc4171_card_name,
		.start		= INTERRUPT_STATUS,
		.end		= INTERRUPT_STATUS,
		.flags		= IORESOURCE_IO,	},
	{	.name		= vrc4171_card_name,
		.start		= CONFIGURATION1,
		.end		= CONFIGURATION1,
		.flags		= IORESOURCE_IO,	},
};

static struct platform_device vrc4171_card_device = {
	.name		= vrc4171_card_name,
	.id		= 0,
	.num_resources	= 3,
	.resource	= vrc4171_card_resource,
};

static inline uint16_t vrc4171_get_irq_status(void)
{
	return inw(INTERRUPT_STATUS);
}

static inline void vrc4171_set_multifunction_pin(vrc4171_slotb_t config)
{
	uint16_t config1;

	config1 = inw(CONFIGURATION1);
	config1 &= ~SLOTB_CONFIG;

	switch (config) {
	case SLOTB_IS_NONE:
		config1 |= SLOTB_NONE;
		break;
	case SLOTB_IS_PCCARD:
		config1 |= SLOTB_PCCARD;
		break;
	case SLOTB_IS_CF:
		config1 |= SLOTB_CF;
		break;
	case SLOTB_IS_FLASHROM:
		config1 |= SLOTB_FLASHROM;
		break;
	default:
		break;
	}

	outw(config1, CONFIGURATION1);
}

static inline uint8_t exca_read_byte(int slot, uint8_t index)
{
	if (slot == CARD_SLOTB)
		index += CARD_SLOTB_OFFSET;

	outb(index, CARD_CONTROLLER_INDEX);
	return inb(CARD_CONTROLLER_DATA);
}

static inline uint16_t exca_read_word(int slot, uint8_t index)
{
	uint16_t data;

	if (slot == CARD_SLOTB)
		index += CARD_SLOTB_OFFSET;

	outb(index++, CARD_CONTROLLER_INDEX);
	data = inb(CARD_CONTROLLER_DATA);

	outb(index, CARD_CONTROLLER_INDEX);
	data |= ((uint16_t)inb(CARD_CONTROLLER_DATA)) << 8;

	return data;
}

static inline uint8_t exca_write_byte(int slot, uint8_t index, uint8_t data)
{
	if (slot == CARD_SLOTB)
		index += CARD_SLOTB_OFFSET;

	outb(index, CARD_CONTROLLER_INDEX);
	outb(data, CARD_CONTROLLER_DATA);

	return data;
}

static inline uint16_t exca_write_word(int slot, uint8_t index, uint16_t data)
{
	if (slot == CARD_SLOTB)
		index += CARD_SLOTB_OFFSET;

	outb(index++, CARD_CONTROLLER_INDEX);
	outb(data, CARD_CONTROLLER_DATA);

	outb(index, CARD_CONTROLLER_INDEX);
	outb((uint8_t)(data >> 8), CARD_CONTROLLER_DATA);

	return data;
}

static inline int search_nonuse_irq(void)
{
	int i;

	for (i = 0; i < 16; i++) {
		if (vrc4171_irq_mask & (1 << i)) {
			vrc4171_irq_mask &= ~(1 << i);
			return i;
		}
	}

	return -1;
}

static int pccard_init(struct pcmcia_socket *sock)
{
	vrc4171_socket_t *socket;
	unsigned int slot;

	sock->features |= SS_CAP_PCCARD | SS_CAP_PAGE_REGS;
	sock->irq_mask = 0;
	sock->map_size = 0x1000;
	sock->pci_irq = vrc4171_irq;

	slot = sock->sock;
	socket = &vrc4171_sockets[slot];
	socket->csc_irq = search_nonuse_irq();
	socket->io_irq = search_nonuse_irq();

	return 0;
}

static int pccard_get_status(struct pcmcia_socket *sock, u_int *value)
{
	unsigned int slot;
	uint8_t status, sense;
	u_int val = 0;

	if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || value == NULL)
		return -EINVAL;

	slot = sock->sock;

	status = exca_read_byte(slot, I365_STATUS);
	if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
		if (status & I365_CS_STSCHG)
			val |= SS_STSCHG;
	} else {
		if (!(status & I365_CS_BVD1))
			val |= SS_BATDEAD;
		else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
			val |= SS_BATWARN;
	}
	if ((status & I365_CS_DETECT) == I365_CS_DETECT)
		val |= SS_DETECT;
	if (status & I365_CS_WRPROT)
		val |= SS_WRPROT;
	if (status & I365_CS_READY)
		val |= SS_READY;
	if (status & I365_CS_POWERON)
		val |= SS_POWERON;

	sense = exca_read_byte(slot, CARD_VOLTAGE_SENSE);
	switch (sense) {
	case VCC_3VORXV_CAPABLE:
		val |= SS_3VCARD | SS_XVCARD;
		break;
	case VCC_XV_ONLY:
		val |= SS_XVCARD;
		break;
	case VCC_3V_CAPABLE:
		val |= SS_3VCARD;
		break;
	default:
		/* 5V only */
		break;
	}

	*value = val;

	return 0;
}

static inline uint8_t set_Vcc_value(u_char Vcc)
{
	switch (Vcc) {
	case 33:
		return VCC_3V;
	case 50:
		return VCC_5V;
	}

	/* Small voltage is chosen for safety. */
	return VCC_3V;
}

static int pccard_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
{
	vrc4171_socket_t *socket;
	unsigned int slot;
	uint8_t voltage, power, control, cscint;

	if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
	    (state->Vpp != state->Vcc && state->Vpp != 0) ||
	    (state->Vcc != 50 && state->Vcc != 33 && state->Vcc != 0))
		return -EINVAL;

	slot = sock->sock;
	socket = &vrc4171_sockets[slot];

	spin_lock_irq(&sock->lock);

	voltage = set_Vcc_value(state->Vcc);
	exca_write_byte(slot, CARD_VOLTAGE_SELECT, voltage);

	power = POWER_ENABLE;
	if (state->Vpp == state->Vcc)
		power |= VPP_GET_VCC;
	if (state->flags & SS_OUTPUT_ENA)
		power |= I365_PWR_OUT;
	exca_write_byte(slot, I365_POWER, power);

	control = 0;
	if (state->io_irq != 0)
		control |= socket->io_irq;
	if (state->flags & SS_IOCARD)
		control |= I365_PC_IOCARD;
	if (state->flags & SS_RESET)
		control	&= ~I365_PC_RESET;
	else
		control |= I365_PC_RESET;
	exca_write_byte(slot, I365_INTCTL, control);

        cscint = 0;
        exca_write_byte(slot, I365_CSCINT, cscint);
	exca_read_byte(slot, I365_CSC);	/* clear CardStatus change */
	if (state->csc_mask != 0)
		cscint |= socket->csc_irq << 8;
	if (state->flags & SS_IOCARD) {
		if (state->csc_mask & SS_STSCHG)
			cscint |= I365_CSC_STSCHG;
	} else {
		if (state->csc_mask & SS_BATDEAD)
			cscint |= I365_CSC_BVD1;
		if (state->csc_mask & SS_BATWARN)
			cscint |= I365_CSC_BVD2;
	}
	if (state->csc_mask & SS_READY)
		cscint |= I365_CSC_READY;
	if (state->csc_mask & SS_DETECT)
		cscint |= I365_CSC_DETECT;
        exca_write_byte(slot, I365_CSCINT, cscint);

	spin_unlock_irq(&sock->lock);

	return 0;
}

static int pccard_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
{
	unsigned int slot;
	uint8_t ioctl, addrwin;
	u_char map;

	if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
	    io == NULL || io->map >= IO_MAX_MAPS ||
	    io->start > 0xffff || io->stop > 0xffff || io->start > io->stop)
		return -EINVAL;

	slot = sock->sock;
	map = io->map;

	addrwin = exca_read_byte(slot, I365_ADDRWIN);
	if (addrwin & I365_ENA_IO(map)) {
		addrwin &= ~I365_ENA_IO(map);
		exca_write_byte(slot, I365_ADDRWIN, addrwin);
	}

	exca_write_word(slot, I365_IO(map)+I365_W_START, io->start);
	exca_write_word(slot, I365_IO(map)+I365_W_STOP, io->stop);

	ioctl = 0;
	if (io->speed > 0)
		ioctl |= I365_IOCTL_WAIT(map);
	if (io->flags & MAP_16BIT)
		ioctl |= I365_IOCTL_16BIT(map);
	if (io->flags & MAP_AUTOSZ)
		ioctl |= I365_IOCTL_IOCS16(map);
	if (io->flags & MAP_0WS)
		ioctl |= I365_IOCTL_0WS(map);
	exca_write_byte(slot, I365_IOCTL, ioctl);

	if (io->flags & MAP_ACTIVE) {
		addrwin |= I365_ENA_IO(map);
		exca_write_byte(slot, I365_ADDRWIN, addrwin);
	}

	return 0;
}

static int pccard_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
{
	unsigned int slot;
	uint16_t start, stop, offset;
	uint8_t addrwin;
	u_char map;

	if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
	    mem == NULL || mem->map >= MEM_MAX_MAPS ||
	    mem->res->start < CARD_MEM_START || mem->res->start > CARD_MEM_END ||
	    mem->res->end < CARD_MEM_START || mem->res->end > CARD_MEM_END ||
	    mem->res->start > mem->res->end ||
	    mem->card_start > CARD_MAX_MEM_OFFSET ||
	    mem->speed > CARD_MAX_MEM_SPEED)
		return -EINVAL;

	slot = sock->sock;
	map = mem->map;

	addrwin = exca_read_byte(slot, I365_ADDRWIN);
	if (addrwin & I365_ENA_MEM(map)) {
		addrwin &= ~I365_ENA_MEM(map);
		exca_write_byte(slot, I365_ADDRWIN, addrwin);
	}

	start = (mem->res->start >> 12) & 0x3fff;
	if (mem->flags & MAP_16BIT)
		start |= I365_MEM_16BIT;
	exca_write_word(slot, I365_MEM(map)+I365_W_START, start);

	stop = (mem->res->end >> 12) & 0x3fff;
	switch (mem->speed) {
	case 0:
		break;
	case 1:
		stop |= I365_MEM_WS0;
		break;
	case 2:
		stop |= I365_MEM_WS1;
		break;
	default:
		stop |= I365_MEM_WS0 | I365_MEM_WS1;
		break;
	}
	exca_write_word(slot, I365_MEM(map)+I365_W_STOP, stop);

	offset = (mem->card_start >> 12) & 0x3fff;
	if (mem->flags & MAP_ATTRIB)
		offset |= I365_MEM_REG;
	if (mem->flags & MAP_WRPROT)
		offset |= I365_MEM_WRPROT;
	exca_write_word(slot, I365_MEM(map)+I365_W_OFF, offset);

	if (mem->flags & MAP_ACTIVE) {
		addrwin |= I365_ENA_MEM(map);
		exca_write_byte(slot, I365_ADDRWIN, addrwin);
	}

	return 0;
}

static struct pccard_operations vrc4171_pccard_operations = {
	.init			= pccard_init,
	.get_status		= pccard_get_status,
	.set_socket		= pccard_set_socket,
	.set_io_map		= pccard_set_io_map,
	.set_mem_map		= pccard_set_mem_map,
};

static inline unsigned int get_events(int slot)
{
	unsigned int events = 0;
	uint8_t status, csc;

	status = exca_read_byte(slot, I365_STATUS);
	csc = exca_read_byte(slot, I365_CSC);

	if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
		if ((csc & I365_CSC_STSCHG) && (status & I365_CS_STSCHG))
			events |= SS_STSCHG;
	} else {
		if (csc & (I365_CSC_BVD1 | I365_CSC_BVD2)) {
			if (!(status & I365_CS_BVD1))
				events |= SS_BATDEAD;
			else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
				events |= SS_BATWARN;
		}
	}
	if ((csc & I365_CSC_READY) && (status & I365_CS_READY))
		events |= SS_READY;
	if ((csc & I365_CSC_DETECT) && ((status & I365_CS_DETECT) == I365_CS_DETECT))
		events |= SS_DETECT;

	return events;
}

static irqreturn_t pccard_interrupt(int irq, void *dev_id)
{
	vrc4171_socket_t *socket;
	unsigned int events;
	irqreturn_t retval = IRQ_NONE;
	uint16_t status;

	status = vrc4171_get_irq_status();
	if (status & IRQ_A) {
		socket = &vrc4171_sockets[CARD_SLOTA];
		if (socket->slot == SLOT_INITIALIZED) {
			if (status & (1 << socket->csc_irq)) {
				events = get_events(CARD_SLOTA);
				if (events != 0) {
					pcmcia_parse_events(&socket->pcmcia_socket, events);
					retval = IRQ_HANDLED;
				}
			}
		}
	}

	if (status & IRQ_B) {
		socket = &vrc4171_sockets[CARD_SLOTB];
		if (socket->slot == SLOT_INITIALIZED) {
			if (status & (1 << socket->csc_irq)) {
				events = get_events(CARD_SLOTB);
				if (events != 0) {
					pcmcia_parse_events(&socket->pcmcia_socket, events);
					retval = IRQ_HANDLED;
				}
			}
		}
	}

	return retval;
}

static inline void reserve_using_irq(int slot)
{
	unsigned int irq;

	irq = exca_read_byte(slot, I365_INTCTL);
	irq &= 0x0f;
	vrc4171_irq_mask &= ~(1 << irq);

	irq = exca_read_byte(slot, I365_CSCINT);
	irq = (irq & 0xf0) >> 4;
	vrc4171_irq_mask &= ~(1 << irq);
}

static int __devinit vrc4171_add_sockets(void)
{
	vrc4171_socket_t *socket;
	int slot, retval;

	for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
		if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
			continue;

		socket = &vrc4171_sockets[slot];
		if (socket->slot != SLOT_PROBE) {
			uint8_t addrwin;

			switch (socket->slot) {
			case SLOT_NOPROBE_MEM:
				addrwin = exca_read_byte(slot, I365_ADDRWIN);
				addrwin &= 0x1f;
				exca_write_byte(slot, I365_ADDRWIN, addrwin);
				break;
			case SLOT_NOPROBE_IO:
				addrwin = exca_read_byte(slot, I365_ADDRWIN);
				addrwin &= 0xc0;
				exca_write_byte(slot, I365_ADDRWIN, addrwin);
				break;
			default:
				break;
			}

			reserve_using_irq(slot);
			continue;
		}

		sprintf(socket->name, "NEC VRC4171 Card Slot %1c", 'A' + slot);
		socket->pcmcia_socket.dev.dev = &vrc4171_card_device.dev;
		socket->pcmcia_socket.ops = &vrc4171_pccard_operations;
		socket->pcmcia_socket.owner = THIS_MODULE;

		retval = pcmcia_register_socket(&socket->pcmcia_socket);
		if (retval < 0)
			return retval;

		exca_write_byte(slot, I365_ADDRWIN, 0);
		exca_write_byte(slot, GLOBAL_CONTROL, 0);

		socket->slot = SLOT_INITIALIZED;
	}

	return 0;
}

static void vrc4171_remove_sockets(void)
{
	vrc4171_socket_t *socket;
	int slot;

	for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
		if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
			continue;

		socket = &vrc4171_sockets[slot];
		if (socket->slot == SLOT_INITIALIZED)
			pcmcia_unregister_socket(&socket->pcmcia_socket);

		socket->slot = SLOT_PROBE;
	}
}

static int __devinit vrc4171_card_setup(char *options)
{
	if (options == NULL || *options == '\0')
		return 1;

	if (strncmp(options, "irq:", 4) == 0) {
		int irq;
		options += 4;
		irq = simple_strtoul(options, &options, 0);
		if (irq >= 0 && irq < NR_IRQS)
			vrc4171_irq = irq;

		if (*options != ',')
			return 1;
		options++;
	}

	if (strncmp(options, "slota:", 6) == 0) {
		options += 6;
		if (*options != '\0') {
			if (strncmp(options, "memnoprobe", 10) == 0) {
				vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_MEM;
				options += 10;
			} else if (strncmp(options, "ionoprobe", 9) == 0) {
				vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_IO;
				options += 9;
			} else if ( strncmp(options, "noprobe", 7) == 0) {
				vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_ALL;
				options += 7;
			}

			if (*options != ',')
				return 1;
			options++;
		} else
			return 1;

	}

	if (strncmp(options, "slotb:", 6) == 0) {
		options += 6;
		if (*options != '\0') {
			if (strncmp(options, "pccard", 6) == 0) {
				vrc4171_slotb = SLOTB_IS_PCCARD;
				options += 6;
			} else if (strncmp(options, "cf", 2) == 0) {
				vrc4171_slotb = SLOTB_IS_CF;
				options += 2;
			} else if (strncmp(options, "flashrom", 8) == 0) {
				vrc4171_slotb = SLOTB_IS_FLASHROM;
				options += 8;
			} else if (strncmp(options, "none", 4) == 0) {
				vrc4171_slotb = SLOTB_IS_NONE;
				options += 4;
			}

			if (*options != ',')
				return 1;
			options++;

			if (strncmp(options, "memnoprobe", 10) == 0)
				vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_MEM;
			if (strncmp(options, "ionoprobe", 9) == 0)
				vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_IO;
			if (strncmp(options, "noprobe", 7) == 0)
				vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_ALL;
		}
	}

	return 1;
}

__setup("vrc4171_card=", vrc4171_card_setup);

static struct device_driver vrc4171_card_driver = {
	.name		= vrc4171_card_name,
	.bus		= &platform_bus_type,
	.suspend	= pcmcia_socket_dev_suspend,
	.resume		= pcmcia_socket_dev_resume,
};

static int __devinit vrc4171_card_init(void)
{
	int retval;

	retval = driver_register(&vrc4171_card_driver);
	if (retval < 0)
		return retval;

	retval = platform_device_register(&vrc4171_card_device);
	if (retval < 0) {
		driver_unregister(&vrc4171_card_driver);
		return retval;
	}

	vrc4171_set_multifunction_pin(vrc4171_slotb);

	retval = vrc4171_add_sockets();
	if (retval == 0)
		retval = request_irq(vrc4171_irq, pccard_interrupt, IRQF_SHARED,
		                     vrc4171_card_name, vrc4171_sockets);

	if (retval < 0) {
		vrc4171_remove_sockets();
		platform_device_unregister(&vrc4171_card_device);
		driver_unregister(&vrc4171_card_driver);
		return retval;
	}

	printk(KERN_INFO "%s, connected to IRQ %d\n", vrc4171_card_driver.name, vrc4171_irq);

	return 0;
}

static void __devexit vrc4171_card_exit(void)
{
	free_irq(vrc4171_irq, vrc4171_sockets);
	vrc4171_remove_sockets();
	platform_device_unregister(&vrc4171_card_device);
	driver_unregister(&vrc4171_card_driver);
}

module_init(vrc4171_card_init);
module_exit(vrc4171_card_exit);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* vrc4171_card.c, NEC VRC4171 Card Controller driver for Socket Services.
	3	*
29ce2c76	4	* Copyright (C) 2003-2005 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
1da177e4 LT	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	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*/
	20	#include <linux/init.h>
	21	#include <linux/ioport.h>
	22	#include <linux/interrupt.h>
	23	#include <linux/module.h>
	24	#include <linux/spinlock.h>
1da177e4	25	#include <linux/types.h>
d052d1be	26	#include <linux/platform_device.h>
1da177e4 LT	27
	28	#include <asm/io.h>
	29
	30	#include <pcmcia/ss.h>
	31
	32	#include "i82365.h"
	33
	34	MODULE_DESCRIPTION("NEC VRC4171 Card Controllers driver for Socket Services");
29ce2c76	35	MODULE_AUTHOR("Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>");
1da177e4 LT	36	MODULE_LICENSE("GPL");
	37
	38	#define CARD_MAX_SLOTS 2
	39	#define CARD_SLOTA 0
	40	#define CARD_SLOTB 1
	41	#define CARD_SLOTB_OFFSET 0x40
	42
	43	#define CARD_MEM_START 0x10000000
	44	#define CARD_MEM_END 0x13ffffff
	45	#define CARD_MAX_MEM_OFFSET 0x3ffffff
	46	#define CARD_MAX_MEM_SPEED 1000
	47
	48	#define CARD_CONTROLLER_INDEX 0x03e0
	49	#define CARD_CONTROLLER_DATA 0x03e1
	50	/* Power register */
	51	#define VPP_GET_VCC 0x01
	52	#define POWER_ENABLE 0x10
	53	#define CARD_VOLTAGE_SENSE 0x1f
	54	#define VCC_3VORXV_CAPABLE 0x00
	55	#define VCC_XV_ONLY 0x01
	56	#define VCC_3V_CAPABLE 0x02
	57	#define VCC_5V_ONLY 0x03
	58	#define CARD_VOLTAGE_SELECT 0x2f
	59	#define VCC_3V 0x01
	60	#define VCC_5V 0x00
	61	#define VCC_XV 0x02
	62	#define VCC_STATUS_3V 0x02
	63	#define VCC_STATUS_5V 0x01
	64	#define VCC_STATUS_XV 0x03
	65	#define GLOBAL_CONTROL 0x1e
	66	#define EXWRBK 0x04
	67	#define IRQPM_EN 0x08
	68	#define CLRPMIRQ 0x10
	69
	70	#define INTERRUPT_STATUS 0x05fa
	71	#define IRQ_A 0x02
	72	#define IRQ_B 0x04
	73
	74	#define CONFIGURATION1 0x05fe
	75	#define SLOTB_CONFIG 0xc000
	76	#define SLOTB_NONE 0x0000
	77	#define SLOTB_PCCARD 0x4000
	78	#define SLOTB_CF 0x8000
	79	#define SLOTB_FLASHROM 0xc000
	80
	81	#define CARD_CONTROLLER_START CARD_CONTROLLER_INDEX
	82	#define CARD_CONTROLLER_END CARD_CONTROLLER_DATA
	83
	84	#define IO_MAX_MAPS 2
	85	#define MEM_MAX_MAPS 5
	86
	87	typedef enum {
	88	SLOT_PROBE = 0,
	89	SLOT_NOPROBE_IO,
	90	SLOT_NOPROBE_MEM,
	91	SLOT_NOPROBE_ALL,
	92	SLOT_INITIALIZED,
	93	} vrc4171_slot_t;
	94
	95	typedef enum {
	96	SLOTB_IS_NONE,
	97	SLOTB_IS_PCCARD,
	98	SLOTB_IS_CF,
	99	SLOTB_IS_FLASHROM,
100	} vrc4171_slotb_t;
101
102	typedef struct vrc4171_socket {
103	vrc4171_slot_t slot;
104	struct pcmcia_socket pcmcia_socket;
105	char name[24];
106	int csc_irq;
107	int io_irq;
108	} vrc4171_socket_t;
109
110	static vrc4171_socket_t vrc4171_sockets[CARD_MAX_SLOTS];
111	static vrc4171_slotb_t vrc4171_slotb = SLOTB_IS_NONE;
112	static char vrc4171_card_name[] = "NEC VRC4171 Card Controller";
113	static unsigned int vrc4171_irq;
114	static uint16_t vrc4171_irq_mask = 0xdeb8;
115
116	static struct resource vrc4171_card_resource[3] = {
117	{ .name = vrc4171_card_name,
118	.start = CARD_CONTROLLER_START,
119	.end = CARD_CONTROLLER_END,
120	.flags = IORESOURCE_IO, },
121	{ .name = vrc4171_card_name,
122	.start = INTERRUPT_STATUS,
123	.end = INTERRUPT_STATUS,
124	.flags = IORESOURCE_IO, },
125	{ .name = vrc4171_card_name,
126	.start = CONFIGURATION1,
127	.end = CONFIGURATION1,
128	.flags = IORESOURCE_IO, },
129	};
130
131	static struct platform_device vrc4171_card_device = {
132	.name = vrc4171_card_name,
133	.id = 0,
134	.num_resources = 3,
135	.resource = vrc4171_card_resource,
136	};
137
138	static inline uint16_t vrc4171_get_irq_status(void)
139	{
140	return inw(INTERRUPT_STATUS);
141	}
142
143	static inline void vrc4171_set_multifunction_pin(vrc4171_slotb_t config)
144	{
145	uint16_t config1;
146
147	config1 = inw(CONFIGURATION1);
148	config1 &= ~SLOTB_CONFIG;
149
150	switch (config) {
151	case SLOTB_IS_NONE:
152	config1 \|= SLOTB_NONE;
153	break;
154	case SLOTB_IS_PCCARD:
155	config1 \|= SLOTB_PCCARD;
156	break;
157	case SLOTB_IS_CF:
158	config1 \|= SLOTB_CF;
159	break;
160	case SLOTB_IS_FLASHROM:
161	config1 \|= SLOTB_FLASHROM;
162	break;
163	default:
164	break;
165	}
166
167	outw(config1, CONFIGURATION1);
168	}
169
170	static inline uint8_t exca_read_byte(int slot, uint8_t index)
171	{
172	if (slot == CARD_SLOTB)
173	index += CARD_SLOTB_OFFSET;
174
175	outb(index, CARD_CONTROLLER_INDEX);
176	return inb(CARD_CONTROLLER_DATA);
177	}
178
179	static inline uint16_t exca_read_word(int slot, uint8_t index)
180	{
181	uint16_t data;
182
183	if (slot == CARD_SLOTB)
184	index += CARD_SLOTB_OFFSET;
185
186	outb(index++, CARD_CONTROLLER_INDEX);
187	data = inb(CARD_CONTROLLER_DATA);
188
189	outb(index, CARD_CONTROLLER_INDEX);
190	data \|= ((uint16_t)inb(CARD_CONTROLLER_DATA)) << 8;
191
192	return data;
193	}
194
195	static inline uint8_t exca_write_byte(int slot, uint8_t index, uint8_t data)
196	{
197	if (slot == CARD_SLOTB)
198	index += CARD_SLOTB_OFFSET;
199
200	outb(index, CARD_CONTROLLER_INDEX);
201	outb(data, CARD_CONTROLLER_DATA);
202
203	return data;
204	}
205
206	static inline uint16_t exca_write_word(int slot, uint8_t index, uint16_t data)
207	{
208	if (slot == CARD_SLOTB)
209	index += CARD_SLOTB_OFFSET;
210
211	outb(index++, CARD_CONTROLLER_INDEX);
212	outb(data, CARD_CONTROLLER_DATA);
213
214	outb(index, CARD_CONTROLLER_INDEX);
215	outb((uint8_t)(data >> 8), CARD_CONTROLLER_DATA);
216
217	return data;
218	}
219
220	static inline int search_nonuse_irq(void)
221	{
222	int i;
223
224	for (i = 0; i < 16; i++) {
225	if (vrc4171_irq_mask & (1 << i)) {
226	vrc4171_irq_mask &= ~(1 << i);
227	return i;
228	}
229	}
230
231	return -1;
232	}
233
234	static int pccard_init(struct pcmcia_socket *sock)
235	{
236	vrc4171_socket_t *socket;
237	unsigned int slot;
238
239	sock->features \|= SS_CAP_PCCARD \| SS_CAP_PAGE_REGS;
240	sock->irq_mask = 0;
241	sock->map_size = 0x1000;
242	sock->pci_irq = vrc4171_irq;
243
244	slot = sock->sock;
245	socket = &vrc4171_sockets[slot];
246	socket->csc_irq = search_nonuse_irq();
247	socket->io_irq = search_nonuse_irq();
248
249	return 0;
250	}
251
252	static int pccard_get_status(struct pcmcia_socket sock, u_int value)
253	{
254	unsigned int slot;
255	uint8_t status, sense;
256	u_int val = 0;
257
258	if (sock == NULL \|\| sock->sock >= CARD_MAX_SLOTS \|\| value == NULL)
259	return -EINVAL;
260
261	slot = sock->sock;
262
263	status = exca_read_byte(slot, I365_STATUS);
264	if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
265	if (status & I365_CS_STSCHG)
266	val \|= SS_STSCHG;
267	} else {
268	if (!(status & I365_CS_BVD1))
269	val \|= SS_BATDEAD;
270	else if ((status & (I365_CS_BVD1 \| I365_CS_BVD2)) == I365_CS_BVD1)
271	val \|= SS_BATWARN;
272	}
273	if ((status & I365_CS_DETECT) == I365_CS_DETECT)
274	val \|= SS_DETECT;
275	if (status & I365_CS_WRPROT)
276	val \|= SS_WRPROT;
277	if (status & I365_CS_READY)
278	val \|= SS_READY;
279	if (status & I365_CS_POWERON)
280	val \|= SS_POWERON;
281
282	sense = exca_read_byte(slot, CARD_VOLTAGE_SENSE);
283	switch (sense) {
284	case VCC_3VORXV_CAPABLE:
285	val \|= SS_3VCARD \| SS_XVCARD;
286	break;
287	case VCC_XV_ONLY:
288	val \|= SS_XVCARD;
289	break;
290	case VCC_3V_CAPABLE:
291	val \|= SS_3VCARD;
292	break;
293	default:
294	/* 5V only */
295	break;
296	}
297
298	*value = val;
299
300	return 0;
301	}
302
1da177e4 LT	303	static inline uint8_t set_Vcc_value(u_char Vcc)
	304	{
	305	switch (Vcc) {
	306	case 33:
	307	return VCC_3V;
	308	case 50:
	309	return VCC_5V;
	310	}
	311
	312	/* Small voltage is chosen for safety. */
	313	return VCC_3V;
	314	}
	315
	316	static int pccard_set_socket(struct pcmcia_socket sock, socket_state_t state)
	317	{
	318	vrc4171_socket_t *socket;
	319	unsigned int slot;
	320	uint8_t voltage, power, control, cscint;
	321
	322	if (sock == NULL \|\| sock->sock >= CARD_MAX_SLOTS \|\|
	323	(state->Vpp != state->Vcc && state->Vpp != 0) \|\|
	324	(state->Vcc != 50 && state->Vcc != 33 && state->Vcc != 0))
	325	return -EINVAL;
	326
	327	slot = sock->sock;
	328	socket = &vrc4171_sockets[slot];
	329
	330	spin_lock_irq(&sock->lock);
	331
	332	voltage = set_Vcc_value(state->Vcc);
	333	exca_write_byte(slot, CARD_VOLTAGE_SELECT, voltage);
	334
	335	power = POWER_ENABLE;
	336	if (state->Vpp == state->Vcc)
	337	power \|= VPP_GET_VCC;
	338	if (state->flags & SS_OUTPUT_ENA)
	339	power \|= I365_PWR_OUT;
	340	exca_write_byte(slot, I365_POWER, power);
	341
	342	control = 0;
	343	if (state->io_irq != 0)
	344	control \|= socket->io_irq;
	345	if (state->flags & SS_IOCARD)
	346	control \|= I365_PC_IOCARD;
	347	if (state->flags & SS_RESET)
	348	control &= ~I365_PC_RESET;
	349	else
	350	control \|= I365_PC_RESET;
	351	exca_write_byte(slot, I365_INTCTL, control);
	352
	353	cscint = 0;
	354	exca_write_byte(slot, I365_CSCINT, cscint);
	355	exca_read_byte(slot, I365_CSC); /* clear CardStatus change */
	356	if (state->csc_mask != 0)
	357	cscint \|= socket->csc_irq << 8;
	358	if (state->flags & SS_IOCARD) {
	359	if (state->csc_mask & SS_STSCHG)
	360	cscint \|= I365_CSC_STSCHG;
	361	} else {
	362	if (state->csc_mask & SS_BATDEAD)
	363	cscint \|= I365_CSC_BVD1;
	364	if (state->csc_mask & SS_BATWARN)
	365	cscint \|= I365_CSC_BVD2;
	366	}
367	if (state->csc_mask & SS_READY)
368	cscint \|= I365_CSC_READY;
369	if (state->csc_mask & SS_DETECT)
370	cscint \|= I365_CSC_DETECT;
371	exca_write_byte(slot, I365_CSCINT, cscint);
372
373	spin_unlock_irq(&sock->lock);
374
375	return 0;
376	}
377
378	static int pccard_set_io_map(struct pcmcia_socket sock, struct pccard_io_map io)
379	{
380	unsigned int slot;
381	uint8_t ioctl, addrwin;
382	u_char map;
383
384	if (sock == NULL \|\| sock->sock >= CARD_MAX_SLOTS \|\|
385	io == NULL \|\| io->map >= IO_MAX_MAPS \|\|
386	io->start > 0xffff \|\| io->stop > 0xffff \|\| io->start > io->stop)
387	return -EINVAL;
388
389	slot = sock->sock;
390	map = io->map;
391
392	addrwin = exca_read_byte(slot, I365_ADDRWIN);
393	if (addrwin & I365_ENA_IO(map)) {
394	addrwin &= ~I365_ENA_IO(map);
395	exca_write_byte(slot, I365_ADDRWIN, addrwin);
396	}
397
398	exca_write_word(slot, I365_IO(map)+I365_W_START, io->start);
399	exca_write_word(slot, I365_IO(map)+I365_W_STOP, io->stop);
400
401	ioctl = 0;
402	if (io->speed > 0)
403	ioctl \|= I365_IOCTL_WAIT(map);
404	if (io->flags & MAP_16BIT)
405	ioctl \|= I365_IOCTL_16BIT(map);
406	if (io->flags & MAP_AUTOSZ)
407	ioctl \|= I365_IOCTL_IOCS16(map);
408	if (io->flags & MAP_0WS)
409	ioctl \|= I365_IOCTL_0WS(map);
410	exca_write_byte(slot, I365_IOCTL, ioctl);
411
412	if (io->flags & MAP_ACTIVE) {
413	addrwin \|= I365_ENA_IO(map);
414	exca_write_byte(slot, I365_ADDRWIN, addrwin);
415	}
416
417	return 0;
418	}
419
420	static int pccard_set_mem_map(struct pcmcia_socket sock, struct pccard_mem_map mem)
421	{
422	unsigned int slot;
423	uint16_t start, stop, offset;
424	uint8_t addrwin;
425	u_char map;
426
427	if (sock == NULL \|\| sock->sock >= CARD_MAX_SLOTS \|\|
428	mem == NULL \|\| mem->map >= MEM_MAX_MAPS \|\|
429	mem->res->start < CARD_MEM_START \|\| mem->res->start > CARD_MEM_END \|\|
430	mem->res->end < CARD_MEM_START \|\| mem->res->end > CARD_MEM_END \|\|
431	mem->res->start > mem->res->end \|\|
432	mem->card_start > CARD_MAX_MEM_OFFSET \|\|
433	mem->speed > CARD_MAX_MEM_SPEED)
434	return -EINVAL;
435
436	slot = sock->sock;
437	map = mem->map;
438
439	addrwin = exca_read_byte(slot, I365_ADDRWIN);
440	if (addrwin & I365_ENA_MEM(map)) {
441	addrwin &= ~I365_ENA_MEM(map);
442	exca_write_byte(slot, I365_ADDRWIN, addrwin);
443	}
444
445	start = (mem->res->start >> 12) & 0x3fff;
446	if (mem->flags & MAP_16BIT)
447	start \|= I365_MEM_16BIT;
448	exca_write_word(slot, I365_MEM(map)+I365_W_START, start);
449
450	stop = (mem->res->end >> 12) & 0x3fff;
451	switch (mem->speed) {
452	case 0:
453	break;
454	case 1:
455	stop \|= I365_MEM_WS0;
456	break;
457	case 2:
458	stop \|= I365_MEM_WS1;
459	break;
460	default:
461	stop \|= I365_MEM_WS0 \| I365_MEM_WS1;
462	break;
463	}
464	exca_write_word(slot, I365_MEM(map)+I365_W_STOP, stop);
465
466	offset = (mem->card_start >> 12) & 0x3fff;
467	if (mem->flags & MAP_ATTRIB)
468	offset \|= I365_MEM_REG;
469	if (mem->flags & MAP_WRPROT)
470	offset \|= I365_MEM_WRPROT;
471	exca_write_word(slot, I365_MEM(map)+I365_W_OFF, offset);
472
473	if (mem->flags & MAP_ACTIVE) {
474	addrwin \|= I365_ENA_MEM(map);
475	exca_write_byte(slot, I365_ADDRWIN, addrwin);
476	}
477
478	return 0;
479	}
480
481	static struct pccard_operations vrc4171_pccard_operations = {
482	.init = pccard_init,
483	.get_status = pccard_get_status,
1da177e4 LT	484	.set_socket = pccard_set_socket,
	485	.set_io_map = pccard_set_io_map,
	486	.set_mem_map = pccard_set_mem_map,
	487	};
	488
	489	static inline unsigned int get_events(int slot)
	490	{
	491	unsigned int events = 0;
	492	uint8_t status, csc;
	493
	494	status = exca_read_byte(slot, I365_STATUS);
	495	csc = exca_read_byte(slot, I365_CSC);
	496
	497	if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
	498	if ((csc & I365_CSC_STSCHG) && (status & I365_CS_STSCHG))
	499	events \|= SS_STSCHG;
	500	} else {
	501	if (csc & (I365_CSC_BVD1 \| I365_CSC_BVD2)) {
	502	if (!(status & I365_CS_BVD1))
	503	events \|= SS_BATDEAD;
	504	else if ((status & (I365_CS_BVD1 \| I365_CS_BVD2)) == I365_CS_BVD1)
	505	events \|= SS_BATWARN;
	506	}
	507	}
	508	if ((csc & I365_CSC_READY) && (status & I365_CS_READY))
	509	events \|= SS_READY;
	510	if ((csc & I365_CSC_DETECT) && ((status & I365_CS_DETECT) == I365_CS_DETECT))
	511	events \|= SS_DETECT;
	512
	513	return events;
	514	}
	515
7d12e780	516	static irqreturn_t pccard_interrupt(int irq, void *dev_id)
1da177e4 LT	517	{
	518	vrc4171_socket_t *socket;
	519	unsigned int events;
	520	irqreturn_t retval = IRQ_NONE;
	521	uint16_t status;
	522
	523	status = vrc4171_get_irq_status();
	524	if (status & IRQ_A) {
	525	socket = &vrc4171_sockets[CARD_SLOTA];
	526	if (socket->slot == SLOT_INITIALIZED) {
	527	if (status & (1 << socket->csc_irq)) {
	528	events = get_events(CARD_SLOTA);
	529	if (events != 0) {
	530	pcmcia_parse_events(&socket->pcmcia_socket, events);
	531	retval = IRQ_HANDLED;
	532	}
	533	}
	534	}
	535	}
	536
	537	if (status & IRQ_B) {
	538	socket = &vrc4171_sockets[CARD_SLOTB];
	539	if (socket->slot == SLOT_INITIALIZED) {
	540	if (status & (1 << socket->csc_irq)) {
	541	events = get_events(CARD_SLOTB);
	542	if (events != 0) {
	543	pcmcia_parse_events(&socket->pcmcia_socket, events);
	544	retval = IRQ_HANDLED;
	545	}
	546	}
	547	}
	548	}
	549
	550	return retval;
	551	}
	552
	553	static inline void reserve_using_irq(int slot)
	554	{
	555	unsigned int irq;
	556
	557	irq = exca_read_byte(slot, I365_INTCTL);
	558	irq &= 0x0f;
	559	vrc4171_irq_mask &= ~(1 << irq);
	560
	561	irq = exca_read_byte(slot, I365_CSCINT);
	562	irq = (irq & 0xf0) >> 4;
	563	vrc4171_irq_mask &= ~(1 << irq);
	564	}
	565
	566	static int __devinit vrc4171_add_sockets(void)
	567	{
	568	vrc4171_socket_t *socket;
	569	int slot, retval;
	570
	571	for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
	572	if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
	573	continue;
	574
	575	socket = &vrc4171_sockets[slot];
	576	if (socket->slot != SLOT_PROBE) {
	577	uint8_t addrwin;
	578
	579	switch (socket->slot) {
	580	case SLOT_NOPROBE_MEM:
581	addrwin = exca_read_byte(slot, I365_ADDRWIN);
582	addrwin &= 0x1f;
583	exca_write_byte(slot, I365_ADDRWIN, addrwin);
584	break;
585	case SLOT_NOPROBE_IO:
586	addrwin = exca_read_byte(slot, I365_ADDRWIN);
587	addrwin &= 0xc0;
588	exca_write_byte(slot, I365_ADDRWIN, addrwin);
589	break;
590	default:
591	break;
592	}
593
594	reserve_using_irq(slot);
595	continue;
596	}
597
598	sprintf(socket->name, "NEC VRC4171 Card Slot %1c", 'A' + slot);
599	socket->pcmcia_socket.dev.dev = &vrc4171_card_device.dev;
600	socket->pcmcia_socket.ops = &vrc4171_pccard_operations;
601	socket->pcmcia_socket.owner = THIS_MODULE;
602
603	retval = pcmcia_register_socket(&socket->pcmcia_socket);
604	if (retval < 0)
605	return retval;
606
607	exca_write_byte(slot, I365_ADDRWIN, 0);
608	exca_write_byte(slot, GLOBAL_CONTROL, 0);
609
610	socket->slot = SLOT_INITIALIZED;
611	}
612
613	return 0;
614	}
615
616	static void vrc4171_remove_sockets(void)
617	{
618	vrc4171_socket_t *socket;
619	int slot;
620
621	for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
622	if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
623	continue;
624
625	socket = &vrc4171_sockets[slot];
626	if (socket->slot == SLOT_INITIALIZED)
627	pcmcia_unregister_socket(&socket->pcmcia_socket);
628
629	socket->slot = SLOT_PROBE;
630	}
631	}
632
633	static int __devinit vrc4171_card_setup(char *options)
634	{
635	if (options == NULL \|\| *options == '\0')
9b41046c	636	return 1;
1da177e4 LT	637
	638	if (strncmp(options, "irq:", 4) == 0) {
	639	int irq;
	640	options += 4;
	641	irq = simple_strtoul(options, &options, 0);
	642	if (irq >= 0 && irq < NR_IRQS)
	643	vrc4171_irq = irq;
	644
	645	if (*options != ',')
9b41046c	646	return 1;
1da177e4 LT	647	options++;
	648	}
	649
	650	if (strncmp(options, "slota:", 6) == 0) {
	651	options += 6;
	652	if (*options != '\0') {
	653	if (strncmp(options, "memnoprobe", 10) == 0) {
	654	vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_MEM;
	655	options += 10;
	656	} else if (strncmp(options, "ionoprobe", 9) == 0) {
	657	vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_IO;
	658	options += 9;
	659	} else if ( strncmp(options, "noprobe", 7) == 0) {
	660	vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_ALL;
	661	options += 7;
	662	}
	663
	664	if (*options != ',')
9b41046c	665	return 1;
1da177e4 LT	666	options++;
1da177e4 LT	667	} else
9b41046c	668	return 1;
1da177e4 LT	669
	670	}
	671
	672	if (strncmp(options, "slotb:", 6) == 0) {
	673	options += 6;
	674	if (*options != '\0') {
	675	if (strncmp(options, "pccard", 6) == 0) {
	676	vrc4171_slotb = SLOTB_IS_PCCARD;
	677	options += 6;
	678	} else if (strncmp(options, "cf", 2) == 0) {
	679	vrc4171_slotb = SLOTB_IS_CF;
	680	options += 2;
	681	} else if (strncmp(options, "flashrom", 8) == 0) {
	682	vrc4171_slotb = SLOTB_IS_FLASHROM;
	683	options += 8;
	684	} else if (strncmp(options, "none", 4) == 0) {
	685	vrc4171_slotb = SLOTB_IS_NONE;
	686	options += 4;
	687	}
	688
	689	if (*options != ',')
9b41046c	690	return 1;
1da177e4 LT	691	options++;
	692
	693	if (strncmp(options, "memnoprobe", 10) == 0)
	694	vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_MEM;
	695	if (strncmp(options, "ionoprobe", 9) == 0)
	696	vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_IO;
	697	if (strncmp(options, "noprobe", 7) == 0)
	698	vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_ALL;
	699	}
	700	}
	701
9b41046c	702	return 1;
1da177e4 LT	703	}
	704
	705	__setup("vrc4171_card=", vrc4171_card_setup);
	706
1da177e4 LT	707	static struct device_driver vrc4171_card_driver = {
	708	.name = vrc4171_card_name,
	709	.bus = &platform_bus_type,
9480e307 RK	710	.suspend = pcmcia_socket_dev_suspend,
9480e307 RK	711	.resume = pcmcia_socket_dev_resume,
1da177e4 LT	712	};
	713
	714	static int __devinit vrc4171_card_init(void)
	715	{
	716	int retval;
	717
	718	retval = driver_register(&vrc4171_card_driver);
	719	if (retval < 0)
	720	return retval;
	721
	722	retval = platform_device_register(&vrc4171_card_device);
	723	if (retval < 0) {
	724	driver_unregister(&vrc4171_card_driver);
	725	return retval;
	726	}
	727
	728	vrc4171_set_multifunction_pin(vrc4171_slotb);
	729
	730	retval = vrc4171_add_sockets();
	731	if (retval == 0)
dace1453	732	retval = request_irq(vrc4171_irq, pccard_interrupt, IRQF_SHARED,
1da177e4 LT	733	vrc4171_card_name, vrc4171_sockets);
	734
	735	if (retval < 0) {
	736	vrc4171_remove_sockets();
	737	platform_device_unregister(&vrc4171_card_device);
	738	driver_unregister(&vrc4171_card_driver);
	739	return retval;
	740	}
	741
	742	printk(KERN_INFO "%s, connected to IRQ %d\n", vrc4171_card_driver.name, vrc4171_irq);
	743
	744	return 0;
	745	}
	746
	747	static void __devexit vrc4171_card_exit(void)
	748	{
	749	free_irq(vrc4171_irq, vrc4171_sockets);
	750	vrc4171_remove_sockets();
	751	platform_device_unregister(&vrc4171_card_device);
	752	driver_unregister(&vrc4171_card_driver);
	753	}
	754
	755	module_init(vrc4171_card_init);
	756	module_exit(vrc4171_card_exit);