[linux.git] / drivers / pcmcia / vrc4171_card.c

/*
 * vrc4171_card.c, NEC VRC4171 Card Controller driver for Socket Services.
 *
 * Copyright (C) 2003-2005  Yoichi Yuasa <[email protected]>
 *
 *  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 <[email protected]>");
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;
	spinlock_t lock;
} 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(&socket->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(&socket->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.parent = &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 platform_driver vrc4171_card_driver = {
	.driver = {
		.name		= vrc4171_card_name,
		.owner		= THIS_MODULE,
	},
};

static int __devinit vrc4171_card_init(void)
{
	int retval;

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

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

	printk(KERN_INFO "%s, connected to IRQ %d\n",
		vrc4171_card_driver.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);
	platform_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	*
ada8e951	4	* Copyright (C) 2003-2005 Yoichi Yuasa <[email protected]>
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");
ada8e951	35	MODULE_AUTHOR("Yoichi Yuasa <[email protected]>");
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;
7a410e8d	108	spinlock_t lock;
1da177e4 LT	109	} vrc4171_socket_t;
	110
	111	static vrc4171_socket_t vrc4171_sockets[CARD_MAX_SLOTS];
	112	static vrc4171_slotb_t vrc4171_slotb = SLOTB_IS_NONE;
	113	static char vrc4171_card_name[] = "NEC VRC4171 Card Controller";
	114	static unsigned int vrc4171_irq;
	115	static uint16_t vrc4171_irq_mask = 0xdeb8;
	116
	117	static struct resource vrc4171_card_resource[3] = {
	118	{ .name = vrc4171_card_name,
	119	.start = CARD_CONTROLLER_START,
	120	.end = CARD_CONTROLLER_END,
	121	.flags = IORESOURCE_IO, },
	122	{ .name = vrc4171_card_name,
	123	.start = INTERRUPT_STATUS,
	124	.end = INTERRUPT_STATUS,
	125	.flags = IORESOURCE_IO, },
	126	{ .name = vrc4171_card_name,
	127	.start = CONFIGURATION1,
	128	.end = CONFIGURATION1,
	129	.flags = IORESOURCE_IO, },
	130	};
	131
	132	static struct platform_device vrc4171_card_device = {
	133	.name = vrc4171_card_name,
	134	.id = 0,
	135	.num_resources = 3,
	136	.resource = vrc4171_card_resource,
	137	};
	138
	139	static inline uint16_t vrc4171_get_irq_status(void)
	140	{
	141	return inw(INTERRUPT_STATUS);
	142	}
	143
	144	static inline void vrc4171_set_multifunction_pin(vrc4171_slotb_t config)
	145	{
	146	uint16_t config1;
	147
	148	config1 = inw(CONFIGURATION1);
	149	config1 &= ~SLOTB_CONFIG;
	150
	151	switch (config) {
	152	case SLOTB_IS_NONE:
	153	config1 \|= SLOTB_NONE;
	154	break;
	155	case SLOTB_IS_PCCARD:
	156	config1 \|= SLOTB_PCCARD;
	157	break;
	158	case SLOTB_IS_CF:
	159	config1 \|= SLOTB_CF;
	160	break;
	161	case SLOTB_IS_FLASHROM:
	162	config1 \|= SLOTB_FLASHROM;
	163	break;
	164	default:
	165	break;
	166	}
	167
	168	outw(config1, CONFIGURATION1);
	169	}
	170
	171	static inline uint8_t exca_read_byte(int slot, uint8_t index)
	172	{
173	if (slot == CARD_SLOTB)
174	index += CARD_SLOTB_OFFSET;
175
176	outb(index, CARD_CONTROLLER_INDEX);
177	return inb(CARD_CONTROLLER_DATA);
178	}
179
180	static inline uint16_t exca_read_word(int slot, uint8_t index)
181	{
182	uint16_t data;
183
184	if (slot == CARD_SLOTB)
185	index += CARD_SLOTB_OFFSET;
186
187	outb(index++, CARD_CONTROLLER_INDEX);
188	data = inb(CARD_CONTROLLER_DATA);
189
190	outb(index, CARD_CONTROLLER_INDEX);
191	data \|= ((uint16_t)inb(CARD_CONTROLLER_DATA)) << 8;
192
193	return data;
194	}
195
196	static inline uint8_t exca_write_byte(int slot, uint8_t index, uint8_t data)
197	{
198	if (slot == CARD_SLOTB)
199	index += CARD_SLOTB_OFFSET;
200
201	outb(index, CARD_CONTROLLER_INDEX);
202	outb(data, CARD_CONTROLLER_DATA);
203
204	return data;
205	}
206
207	static inline uint16_t exca_write_word(int slot, uint8_t index, uint16_t data)
208	{
209	if (slot == CARD_SLOTB)
210	index += CARD_SLOTB_OFFSET;
211
212	outb(index++, CARD_CONTROLLER_INDEX);
213	outb(data, CARD_CONTROLLER_DATA);
214
215	outb(index, CARD_CONTROLLER_INDEX);
216	outb((uint8_t)(data >> 8), CARD_CONTROLLER_DATA);
217
218	return data;
219	}
220
221	static inline int search_nonuse_irq(void)
222	{
223	int i;
224
225	for (i = 0; i < 16; i++) {
226	if (vrc4171_irq_mask & (1 << i)) {
227	vrc4171_irq_mask &= ~(1 << i);
228	return i;
229	}
230	}
231
232	return -1;
233	}
234
235	static int pccard_init(struct pcmcia_socket *sock)
236	{
237	vrc4171_socket_t *socket;
238	unsigned int slot;
239
240	sock->features \|= SS_CAP_PCCARD \| SS_CAP_PAGE_REGS;
241	sock->irq_mask = 0;
242	sock->map_size = 0x1000;
243	sock->pci_irq = vrc4171_irq;
244
245	slot = sock->sock;
246	socket = &vrc4171_sockets[slot];
247	socket->csc_irq = search_nonuse_irq();
248	socket->io_irq = search_nonuse_irq();
249
250	return 0;
251	}
252
253	static int pccard_get_status(struct pcmcia_socket sock, u_int value)
254	{
255	unsigned int slot;
256	uint8_t status, sense;
257	u_int val = 0;
258
259	if (sock == NULL \|\| sock->sock >= CARD_MAX_SLOTS \|\| value == NULL)
260	return -EINVAL;
261
262	slot = sock->sock;
263
264	status = exca_read_byte(slot, I365_STATUS);
265	if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
266	if (status & I365_CS_STSCHG)
267	val \|= SS_STSCHG;
268	} else {
269	if (!(status & I365_CS_BVD1))
270	val \|= SS_BATDEAD;
271	else if ((status & (I365_CS_BVD1 \| I365_CS_BVD2)) == I365_CS_BVD1)
272	val \|= SS_BATWARN;
273	}
274	if ((status & I365_CS_DETECT) == I365_CS_DETECT)
275	val \|= SS_DETECT;
276	if (status & I365_CS_WRPROT)
277	val \|= SS_WRPROT;
278	if (status & I365_CS_READY)
279	val \|= SS_READY;
280	if (status & I365_CS_POWERON)
281	val \|= SS_POWERON;
282
283	sense = exca_read_byte(slot, CARD_VOLTAGE_SENSE);
284	switch (sense) {
285	case VCC_3VORXV_CAPABLE:
286	val \|= SS_3VCARD \| SS_XVCARD;
287	break;
288	case VCC_XV_ONLY:
289	val \|= SS_XVCARD;
290	break;
291	case VCC_3V_CAPABLE:
292	val \|= SS_3VCARD;
293	break;
294	default:
295	/* 5V only */
296	break;
297	}
298
299	*value = val;
300
301	return 0;
302	}
303
1da177e4 LT	304	static inline uint8_t set_Vcc_value(u_char Vcc)
	305	{
	306	switch (Vcc) {
	307	case 33:
	308	return VCC_3V;
	309	case 50:
	310	return VCC_5V;
	311	}
	312
	313	/* Small voltage is chosen for safety. */
	314	return VCC_3V;
	315	}
	316
	317	static int pccard_set_socket(struct pcmcia_socket sock, socket_state_t state)
	318	{
	319	vrc4171_socket_t *socket;
	320	unsigned int slot;
	321	uint8_t voltage, power, control, cscint;
	322
	323	if (sock == NULL \|\| sock->sock >= CARD_MAX_SLOTS \|\|
	324	(state->Vpp != state->Vcc && state->Vpp != 0) \|\|
	325	(state->Vcc != 50 && state->Vcc != 33 && state->Vcc != 0))
	326	return -EINVAL;
	327
	328	slot = sock->sock;
	329	socket = &vrc4171_sockets[slot];
	330
7a410e8d	331	spin_lock_irq(&socket->lock);
1da177e4 LT	332
	333	voltage = set_Vcc_value(state->Vcc);
	334	exca_write_byte(slot, CARD_VOLTAGE_SELECT, voltage);
	335
	336	power = POWER_ENABLE;
	337	if (state->Vpp == state->Vcc)
	338	power \|= VPP_GET_VCC;
	339	if (state->flags & SS_OUTPUT_ENA)
	340	power \|= I365_PWR_OUT;
	341	exca_write_byte(slot, I365_POWER, power);
	342
	343	control = 0;
	344	if (state->io_irq != 0)
	345	control \|= socket->io_irq;
	346	if (state->flags & SS_IOCARD)
	347	control \|= I365_PC_IOCARD;
	348	if (state->flags & SS_RESET)
	349	control &= ~I365_PC_RESET;
	350	else
	351	control \|= I365_PC_RESET;
	352	exca_write_byte(slot, I365_INTCTL, control);
	353
	354	cscint = 0;
	355	exca_write_byte(slot, I365_CSCINT, cscint);
	356	exca_read_byte(slot, I365_CSC); /* clear CardStatus change */
	357	if (state->csc_mask != 0)
	358	cscint \|= socket->csc_irq << 8;
	359	if (state->flags & SS_IOCARD) {
	360	if (state->csc_mask & SS_STSCHG)
	361	cscint \|= I365_CSC_STSCHG;
	362	} else {
	363	if (state->csc_mask & SS_BATDEAD)
	364	cscint \|= I365_CSC_BVD1;
	365	if (state->csc_mask & SS_BATWARN)
	366	cscint \|= I365_CSC_BVD2;
	367	}
	368	if (state->csc_mask & SS_READY)
	369	cscint \|= I365_CSC_READY;
	370	if (state->csc_mask & SS_DETECT)
	371	cscint \|= I365_CSC_DETECT;
	372	exca_write_byte(slot, I365_CSCINT, cscint);
	373
7a410e8d	374	spin_unlock_irq(&socket->lock);
1da177e4 LT	375
	376	return 0;
	377	}
	378
	379	static int pccard_set_io_map(struct pcmcia_socket sock, struct pccard_io_map io)
	380	{
	381	unsigned int slot;
	382	uint8_t ioctl, addrwin;
	383	u_char map;
	384
	385	if (sock == NULL \|\| sock->sock >= CARD_MAX_SLOTS \|\|
	386	io == NULL \|\| io->map >= IO_MAX_MAPS \|\|
	387	io->start > 0xffff \|\| io->stop > 0xffff \|\| io->start > io->stop)
	388	return -EINVAL;
	389
	390	slot = sock->sock;
	391	map = io->map;
	392
	393	addrwin = exca_read_byte(slot, I365_ADDRWIN);
	394	if (addrwin & I365_ENA_IO(map)) {
	395	addrwin &= ~I365_ENA_IO(map);
	396	exca_write_byte(slot, I365_ADDRWIN, addrwin);
	397	}
	398
	399	exca_write_word(slot, I365_IO(map)+I365_W_START, io->start);
	400	exca_write_word(slot, I365_IO(map)+I365_W_STOP, io->stop);
	401
	402	ioctl = 0;
	403	if (io->speed > 0)
	404	ioctl \|= I365_IOCTL_WAIT(map);
	405	if (io->flags & MAP_16BIT)
	406	ioctl \|= I365_IOCTL_16BIT(map);
	407	if (io->flags & MAP_AUTOSZ)
	408	ioctl \|= I365_IOCTL_IOCS16(map);
	409	if (io->flags & MAP_0WS)
	410	ioctl \|= I365_IOCTL_0WS(map);
	411	exca_write_byte(slot, I365_IOCTL, ioctl);
	412
	413	if (io->flags & MAP_ACTIVE) {
	414	addrwin \|= I365_ENA_IO(map);
	415	exca_write_byte(slot, I365_ADDRWIN, addrwin);
	416	}
	417
	418	return 0;
	419	}
	420
	421	static int pccard_set_mem_map(struct pcmcia_socket sock, struct pccard_mem_map mem)
	422	{
	423	unsigned int slot;
	424	uint16_t start, stop, offset;
	425	uint8_t addrwin;
	426	u_char map;
	427
	428	if (sock == NULL \|\| sock->sock >= CARD_MAX_SLOTS \|\|
	429	mem == NULL \|\| mem->map >= MEM_MAX_MAPS \|\|
	430	mem->res->start < CARD_MEM_START \|\| mem->res->start > CARD_MEM_END \|\|
	431	mem->res->end < CARD_MEM_START \|\| mem->res->end > CARD_MEM_END \|\|
	432	mem->res->start > mem->res->end \|\|
	433	mem->card_start > CARD_MAX_MEM_OFFSET \|\|
	434	mem->speed > CARD_MAX_MEM_SPEED)
	435	return -EINVAL;
	436
	437	slot = sock->sock;
	438	map = mem->map;
439
440	addrwin = exca_read_byte(slot, I365_ADDRWIN);
441	if (addrwin & I365_ENA_MEM(map)) {
442	addrwin &= ~I365_ENA_MEM(map);
443	exca_write_byte(slot, I365_ADDRWIN, addrwin);
444	}
445
446	start = (mem->res->start >> 12) & 0x3fff;
447	if (mem->flags & MAP_16BIT)
448	start \|= I365_MEM_16BIT;
449	exca_write_word(slot, I365_MEM(map)+I365_W_START, start);
450
451	stop = (mem->res->end >> 12) & 0x3fff;
452	switch (mem->speed) {
453	case 0:
454	break;
455	case 1:
456	stop \|= I365_MEM_WS0;
457	break;
458	case 2:
459	stop \|= I365_MEM_WS1;
460	break;
461	default:
462	stop \|= I365_MEM_WS0 \| I365_MEM_WS1;
463	break;
464	}
465	exca_write_word(slot, I365_MEM(map)+I365_W_STOP, stop);
466
467	offset = (mem->card_start >> 12) & 0x3fff;
468	if (mem->flags & MAP_ATTRIB)
469	offset \|= I365_MEM_REG;
470	if (mem->flags & MAP_WRPROT)
471	offset \|= I365_MEM_WRPROT;
472	exca_write_word(slot, I365_MEM(map)+I365_W_OFF, offset);
473
474	if (mem->flags & MAP_ACTIVE) {
475	addrwin \|= I365_ENA_MEM(map);
476	exca_write_byte(slot, I365_ADDRWIN, addrwin);
477	}
478
479	return 0;
480	}
481
482	static struct pccard_operations vrc4171_pccard_operations = {
483	.init = pccard_init,
484	.get_status = pccard_get_status,
1da177e4 LT	485	.set_socket = pccard_set_socket,
	486	.set_io_map = pccard_set_io_map,
	487	.set_mem_map = pccard_set_mem_map,
	488	};
	489
	490	static inline unsigned int get_events(int slot)
	491	{
	492	unsigned int events = 0;
	493	uint8_t status, csc;
	494
	495	status = exca_read_byte(slot, I365_STATUS);
	496	csc = exca_read_byte(slot, I365_CSC);
	497
	498	if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
	499	if ((csc & I365_CSC_STSCHG) && (status & I365_CS_STSCHG))
	500	events \|= SS_STSCHG;
	501	} else {
	502	if (csc & (I365_CSC_BVD1 \| I365_CSC_BVD2)) {
	503	if (!(status & I365_CS_BVD1))
	504	events \|= SS_BATDEAD;
	505	else if ((status & (I365_CS_BVD1 \| I365_CS_BVD2)) == I365_CS_BVD1)
	506	events \|= SS_BATWARN;
	507	}
	508	}
	509	if ((csc & I365_CSC_READY) && (status & I365_CS_READY))
	510	events \|= SS_READY;
	511	if ((csc & I365_CSC_DETECT) && ((status & I365_CS_DETECT) == I365_CS_DETECT))
	512	events \|= SS_DETECT;
	513
	514	return events;
	515	}
	516
7d12e780	517	static irqreturn_t pccard_interrupt(int irq, void *dev_id)
1da177e4 LT	518	{
	519	vrc4171_socket_t *socket;
	520	unsigned int events;
	521	irqreturn_t retval = IRQ_NONE;
	522	uint16_t status;
	523
	524	status = vrc4171_get_irq_status();
	525	if (status & IRQ_A) {
	526	socket = &vrc4171_sockets[CARD_SLOTA];
	527	if (socket->slot == SLOT_INITIALIZED) {
	528	if (status & (1 << socket->csc_irq)) {
	529	events = get_events(CARD_SLOTA);
	530	if (events != 0) {
	531	pcmcia_parse_events(&socket->pcmcia_socket, events);
	532	retval = IRQ_HANDLED;
	533	}
	534	}
	535	}
	536	}
	537
	538	if (status & IRQ_B) {
	539	socket = &vrc4171_sockets[CARD_SLOTB];
	540	if (socket->slot == SLOT_INITIALIZED) {
	541	if (status & (1 << socket->csc_irq)) {
	542	events = get_events(CARD_SLOTB);
	543	if (events != 0) {
	544	pcmcia_parse_events(&socket->pcmcia_socket, events);
	545	retval = IRQ_HANDLED;
	546	}
	547	}
	548	}
	549	}
	550
	551	return retval;
	552	}
	553
	554	static inline void reserve_using_irq(int slot)
	555	{
	556	unsigned int irq;
	557
	558	irq = exca_read_byte(slot, I365_INTCTL);
	559	irq &= 0x0f;
	560	vrc4171_irq_mask &= ~(1 << irq);
	561
	562	irq = exca_read_byte(slot, I365_CSCINT);
	563	irq = (irq & 0xf0) >> 4;
	564	vrc4171_irq_mask &= ~(1 << irq);
	565	}
	566
	567	static int __devinit vrc4171_add_sockets(void)
	568	{
	569	vrc4171_socket_t *socket;
	570	int slot, retval;
	571
	572	for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
	573	if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
	574	continue;
	575
	576	socket = &vrc4171_sockets[slot];
	577	if (socket->slot != SLOT_PROBE) {
	578	uint8_t addrwin;
	579
	580	switch (socket->slot) {
	581	case SLOT_NOPROBE_MEM:
582	addrwin = exca_read_byte(slot, I365_ADDRWIN);
583	addrwin &= 0x1f;
584	exca_write_byte(slot, I365_ADDRWIN, addrwin);
585	break;
586	case SLOT_NOPROBE_IO:
587	addrwin = exca_read_byte(slot, I365_ADDRWIN);
588	addrwin &= 0xc0;
589	exca_write_byte(slot, I365_ADDRWIN, addrwin);
590	break;
591	default:
592	break;
593	}
594
595	reserve_using_irq(slot);
596	continue;
597	}
598
599	sprintf(socket->name, "NEC VRC4171 Card Slot %1c", 'A' + slot);
dfe461ae	600	socket->pcmcia_socket.dev.parent = &vrc4171_card_device.dev;
1da177e4 LT	601	socket->pcmcia_socket.ops = &vrc4171_pccard_operations;
	602	socket->pcmcia_socket.owner = THIS_MODULE;
	603
	604	retval = pcmcia_register_socket(&socket->pcmcia_socket);
	605	if (retval < 0)
	606	return retval;
	607
	608	exca_write_byte(slot, I365_ADDRWIN, 0);
	609	exca_write_byte(slot, GLOBAL_CONTROL, 0);
	610
	611	socket->slot = SLOT_INITIALIZED;
	612	}
	613
	614	return 0;
	615	}
	616
	617	static void vrc4171_remove_sockets(void)
	618	{
	619	vrc4171_socket_t *socket;
	620	int slot;
	621
	622	for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
	623	if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
	624	continue;
	625
	626	socket = &vrc4171_sockets[slot];
	627	if (socket->slot == SLOT_INITIALIZED)
	628	pcmcia_unregister_socket(&socket->pcmcia_socket);
	629
	630	socket->slot = SLOT_PROBE;
	631	}
	632	}
	633
	634	static int __devinit vrc4171_card_setup(char *options)
	635	{
	636	if (options == NULL \|\| *options == '\0')
9b41046c	637	return 1;
1da177e4 LT	638
	639	if (strncmp(options, "irq:", 4) == 0) {
	640	int irq;
	641	options += 4;
	642	irq = simple_strtoul(options, &options, 0);
9130adda	643	if (irq >= 0 && irq < nr_irqs)
1da177e4 LT	644	vrc4171_irq = irq;
	645
	646	if (*options != ',')
9b41046c	647	return 1;
1da177e4 LT	648	options++;
	649	}
	650
	651	if (strncmp(options, "slota:", 6) == 0) {
	652	options += 6;
	653	if (*options != '\0') {
	654	if (strncmp(options, "memnoprobe", 10) == 0) {
	655	vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_MEM;
	656	options += 10;
	657	} else if (strncmp(options, "ionoprobe", 9) == 0) {
	658	vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_IO;
	659	options += 9;
	660	} else if ( strncmp(options, "noprobe", 7) == 0) {
	661	vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_ALL;
	662	options += 7;
	663	}
	664
	665	if (*options != ',')
9b41046c	666	return 1;
1da177e4 LT	667	options++;
1da177e4 LT	668	} else
9b41046c	669	return 1;
1da177e4 LT	670
	671	}
	672
	673	if (strncmp(options, "slotb:", 6) == 0) {
	674	options += 6;
	675	if (*options != '\0') {
	676	if (strncmp(options, "pccard", 6) == 0) {
	677	vrc4171_slotb = SLOTB_IS_PCCARD;
	678	options += 6;
	679	} else if (strncmp(options, "cf", 2) == 0) {
	680	vrc4171_slotb = SLOTB_IS_CF;
	681	options += 2;
	682	} else if (strncmp(options, "flashrom", 8) == 0) {
	683	vrc4171_slotb = SLOTB_IS_FLASHROM;
	684	options += 8;
	685	} else if (strncmp(options, "none", 4) == 0) {
	686	vrc4171_slotb = SLOTB_IS_NONE;
	687	options += 4;
	688	}
	689
	690	if (*options != ',')
9b41046c	691	return 1;
1da177e4 LT	692	options++;
	693
	694	if (strncmp(options, "memnoprobe", 10) == 0)
	695	vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_MEM;
	696	if (strncmp(options, "ionoprobe", 9) == 0)
	697	vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_IO;
	698	if (strncmp(options, "noprobe", 7) == 0)
	699	vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_ALL;
	700	}
	701	}
	702
9b41046c	703	return 1;
1da177e4 LT	704	}
	705
	706	__setup("vrc4171_card=", vrc4171_card_setup);
	707
7a192ec3 ML	708	static struct platform_driver vrc4171_card_driver = {
	709	.driver = {
	710	.name = vrc4171_card_name,
	711	.owner = THIS_MODULE,
	712	},
1da177e4 LT	713	};
	714
	715	static int __devinit vrc4171_card_init(void)
	716	{
	717	int retval;
	718
7a192ec3	719	retval = platform_driver_register(&vrc4171_card_driver);
1da177e4 LT	720	if (retval < 0)
	721	return retval;
	722
	723	retval = platform_device_register(&vrc4171_card_device);
	724	if (retval < 0) {
7a192ec3	725	platform_driver_unregister(&vrc4171_card_driver);
1da177e4 LT	726	return retval;
	727	}
	728
	729	vrc4171_set_multifunction_pin(vrc4171_slotb);
	730
	731	retval = vrc4171_add_sockets();
	732	if (retval == 0)
dace1453	733	retval = request_irq(vrc4171_irq, pccard_interrupt, IRQF_SHARED,
1da177e4 LT	734	vrc4171_card_name, vrc4171_sockets);
	735
	736	if (retval < 0) {
	737	vrc4171_remove_sockets();
	738	platform_device_unregister(&vrc4171_card_device);
7a192ec3	739	platform_driver_unregister(&vrc4171_card_driver);
1da177e4 LT	740	return retval;
	741	}
	742
7a192ec3 ML	743	printk(KERN_INFO "%s, connected to IRQ %d\n",
7a192ec3 ML	744	vrc4171_card_driver.driver.name, vrc4171_irq);
1da177e4 LT	745
	746	return 0;
	747	}
	748
	749	static void __devexit vrc4171_card_exit(void)
	750	{
	751	free_irq(vrc4171_irq, vrc4171_sockets);
	752	vrc4171_remove_sockets();
	753	platform_device_unregister(&vrc4171_card_device);
7a192ec3	754	platform_driver_unregister(&vrc4171_card_driver);
1da177e4 LT	755	}
	756
	757	module_init(vrc4171_card_init);
	758	module_exit(vrc4171_card_exit);