drivers/pcmcia/vrc4171_card.c - kernel/msm-4.9 - Gitiles

 /*
  * 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);
	/*
	* 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);