drivers/pcmcia/pxa2xx_sharpsl.c - maze/linux - Git at Google

 /*
  * Sharp SL-C7xx Series PCMCIA routines
  *
  * Copyright (c) 2004-2005 Richard Purdie
  *
  * Based on Sharp's 2.4 kernel patches and pxa2xx_mainstone.c
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  *
  */

 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>

 #include <asm/mach-types.h>
 #include <asm/hardware.h>
 #include <asm/irq.h>
 #include <asm/hardware/scoop.h>
 #ifdef CONFIG_SA1100_COLLIE
 #include <asm/arch-sa1100/collie.h>
 #else
 #include <asm/arch-pxa/pxa-regs.h>
 #endif

 #include "soc_common.h"

 #define	NO_KEEP_VS 0x0001

 static void sharpsl_pcmcia_init_reset(struct scoop_pcmcia_dev *scoopdev)
 {
 	reset_scoop(scoopdev->dev);
 	scoopdev->keep_vs = NO_KEEP_VS;
 	scoopdev->keep_rd = 0;
 }

 static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
 {
 	int ret;

 #ifndef CONFIG_SA1100_COLLIE
 	/*
 	 * Setup default state of GPIO outputs
 	 * before we enable them as outputs.
 	 */
 	GPSR(GPIO48_nPOE) =
 		GPIO_bit(GPIO48_nPOE) |
 		GPIO_bit(GPIO49_nPWE) |
 		GPIO_bit(GPIO50_nPIOR) |
 		GPIO_bit(GPIO51_nPIOW) |
 		GPIO_bit(GPIO52_nPCE_1) |
 		GPIO_bit(GPIO53_nPCE_2);

 	pxa_gpio_mode(GPIO48_nPOE_MD);
 	pxa_gpio_mode(GPIO49_nPWE_MD);
 	pxa_gpio_mode(GPIO50_nPIOR_MD);
 	pxa_gpio_mode(GPIO51_nPIOW_MD);
 	pxa_gpio_mode(GPIO52_nPCE_1_MD);
 	pxa_gpio_mode(GPIO53_nPCE_2_MD);
 	pxa_gpio_mode(GPIO54_pSKTSEL_MD);
 	pxa_gpio_mode(GPIO55_nPREG_MD);
 	pxa_gpio_mode(GPIO56_nPWAIT_MD);
 	pxa_gpio_mode(GPIO57_nIOIS16_MD);
 #endif

 	/* Register interrupts */
 	if (scoop_devs[skt->nr].cd_irq >= 0) {
 		struct pcmcia_irqs cd_irq;

 		cd_irq.sock = skt->nr;
 		cd_irq.irq  = scoop_devs[skt->nr].cd_irq;
 		cd_irq.str  = scoop_devs[skt->nr].cd_irq_str;
 		ret = soc_pcmcia_request_irqs(skt, &cd_irq, 1);

 		if (ret) {
 			printk(KERN_ERR "Request for Compact Flash IRQ failed\n");
 			return ret;
 		}
 	}

 	skt->irq = scoop_devs[skt->nr].irq;

 	return 0;
 }

 static void sharpsl_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
 {
 	if (scoop_devs[skt->nr].cd_irq >= 0) {
 		struct pcmcia_irqs cd_irq;

 		cd_irq.sock = skt->nr;
 		cd_irq.irq  = scoop_devs[skt->nr].cd_irq;
 		cd_irq.str  = scoop_devs[skt->nr].cd_irq_str;
 		soc_pcmcia_free_irqs(skt, &cd_irq, 1);
 	}
 }


 static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
 				    struct pcmcia_state *state)
 {
 	unsigned short cpr, csr;
 	struct device *scoop = scoop_devs[skt->nr].dev;

 	cpr = read_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR);

 	write_scoop_reg(scoop, SCOOP_IRM, 0x00FF);
 	write_scoop_reg(scoop, SCOOP_ISR, 0x0000);
 	write_scoop_reg(scoop, SCOOP_IRM, 0x0000);
 	csr = read_scoop_reg(scoop, SCOOP_CSR);
 	if (csr & 0x0004) {
 		/* card eject */
 		write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
 		scoop_devs[skt->nr].keep_vs = NO_KEEP_VS;
 	}
 	else if (!(scoop_devs[skt->nr].keep_vs & NO_KEEP_VS)) {
 		/* keep vs1,vs2 */
 		write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
 		csr |= scoop_devs[skt->nr].keep_vs;
 	}
 	else if (cpr & 0x0003) {
 		/* power on */
 		write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
 		scoop_devs[skt->nr].keep_vs = (csr & 0x00C0);
 	}
 	else {
 		/* card detect */
 		write_scoop_reg(scoop, SCOOP_CDR, 0x0002);
 	}

 	state->detect = (csr & 0x0004) ? 0 : 1;
 	state->ready  = (csr & 0x0002) ? 1 : 0;
 	state->bvd1   = (csr & 0x0010) ? 1 : 0;
 	state->bvd2   = (csr & 0x0020) ? 1 : 0;
 	state->wrprot = (csr & 0x0008) ? 1 : 0;
 	state->vs_3v  = (csr & 0x0040) ? 0 : 1;
 	state->vs_Xv  = (csr & 0x0080) ? 0 : 1;

 	if ((cpr & 0x0080) && ((cpr & 0x8040) != 0x8040)) {
 		printk(KERN_ERR "sharpsl_pcmcia_socket_state(): CPR=%04X, Low voltage!\n", cpr);
 	}

 }


 static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
 				       const socket_state_t *state)
 {
 	unsigned long flags;
 	struct device *scoop = scoop_devs[skt->nr].dev;

 	unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr;

 	switch (state->Vcc) {
 	case	0:  	break;
 	case 	33: 	break;
 	case	50: 	break;
 	default:
 		 printk(KERN_ERR "sharpsl_pcmcia_configure_socket(): bad Vcc %u\n", state->Vcc);
 		 return -1;
 	}

 	if ((state->Vpp!=state->Vcc) && (state->Vpp!=0)) {
 		printk(KERN_ERR "CF slot cannot support Vpp %u\n", state->Vpp);
 		return -1;
 	}

 	local_irq_save(flags);

 	nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010;
 	ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083;
 	nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080;
 	nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E;

 	ncpr |= (state->Vcc == 33) ? 0x0001 :
 				(state->Vcc == 50) ? 0x0002 : 0;
 	nmcr |= (state->flags&SS_IOCARD) ? 0x0010 : 0;
 	ncpr |= (state->flags&SS_OUTPUT_ENA) ? 0x0080 : 0;
 	nccr |= (state->flags&SS_RESET)? 0x0080: 0;
 	nimr |=	((skt->status&SS_DETECT) ? 0x0004 : 0)|
 			((skt->status&SS_READY)  ? 0x0002 : 0)|
 			((skt->status&SS_BATDEAD)? 0x0010 : 0)|
 			((skt->status&SS_BATWARN)? 0x0020 : 0)|
 			((skt->status&SS_STSCHG) ? 0x0010 : 0)|
 			((skt->status&SS_WRPROT) ? 0x0008 : 0);

 	if (!(ncpr & 0x0003)) {
 		scoop_devs[skt->nr].keep_rd = 0;
 	} else if (!scoop_devs[skt->nr].keep_rd) {
 		if (nccr & 0x0080)
 			scoop_devs[skt->nr].keep_rd = 1;
 		else
 			nccr |= 0x0080;
 	}

 	if (mcr != nmcr)
 		write_scoop_reg(scoop, SCOOP_MCR, nmcr);
 	if (cpr != ncpr)
 		write_scoop_reg(scoop, SCOOP_CPR, ncpr);
 	if (ccr != nccr)
 		write_scoop_reg(scoop, SCOOP_CCR, nccr);
 	if (imr != nimr)
 		write_scoop_reg(scoop, SCOOP_IMR, nimr);

 	local_irq_restore(flags);

 	return 0;
 }

 static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
 {
 	sharpsl_pcmcia_init_reset(&scoop_devs[skt->nr]);

 	/* Enable interrupt */
 	write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_IMR, 0x00C0);
 	write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_MCR, 0x0101);
 	scoop_devs[skt->nr].keep_vs = NO_KEEP_VS;

 	if (machine_is_collie())
 		/* We need to disable SS_OUTPUT_ENA here. */
 		write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR, read_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR) & ~0x0080);
 }

 static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
 {
 	/* CF_BUS_OFF */
 	sharpsl_pcmcia_init_reset(&scoop_devs[skt->nr]);

 	if (machine_is_collie())
 		/* We need to disable SS_OUTPUT_ENA here. */
 		write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR, read_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR) & ~0x0080);
 }

 static struct pcmcia_low_level sharpsl_pcmcia_ops = {
 	.owner				= THIS_MODULE,
 	.hw_init			= sharpsl_pcmcia_hw_init,
 	.hw_shutdown		= sharpsl_pcmcia_hw_shutdown,
 	.socket_state		= sharpsl_pcmcia_socket_state,
 	.configure_socket	= sharpsl_pcmcia_configure_socket,
 	.socket_init		= sharpsl_pcmcia_socket_init,
 	.socket_suspend		= sharpsl_pcmcia_socket_suspend,
 	.first				= 0,
 	.nr					= 0,
 };

 static struct platform_device *sharpsl_pcmcia_device;

 #ifdef CONFIG_SA1100_COLLIE
 int __init pcmcia_collie_init(struct device *dev)
 {
        int ret = -ENODEV;

        if (machine_is_collie())
                ret = sa11xx_drv_pcmcia_probe(dev, &sharpsl_pcmcia_ops, 0, 1);

        return ret;
 }

 #else

 static int __init sharpsl_pcmcia_init(void)
 {
 	int ret;

 	sharpsl_pcmcia_ops.nr=scoop_num;
 	sharpsl_pcmcia_device = kmalloc(sizeof(*sharpsl_pcmcia_device), GFP_KERNEL);
 	if (!sharpsl_pcmcia_device)
 		return -ENOMEM;

 	memset(sharpsl_pcmcia_device, 0, sizeof(*sharpsl_pcmcia_device));
 	sharpsl_pcmcia_device->name = "pxa2xx-pcmcia";
 	sharpsl_pcmcia_device->dev.platform_data = &sharpsl_pcmcia_ops;
 	sharpsl_pcmcia_device->dev.parent=scoop_devs[0].dev;

 	ret = platform_device_register(sharpsl_pcmcia_device);
 	if (ret)
 		kfree(sharpsl_pcmcia_device);

 	return ret;
 }

 static void __exit sharpsl_pcmcia_exit(void)
 {
 	/*
 	 * This call is supposed to free our sharpsl_pcmcia_device.
 	 * Unfortunately platform_device don't have a free method, and
 	 * we can't assume it's free of any reference at this point so we
 	 * can't free it either.
 	 */
 	platform_device_unregister(sharpsl_pcmcia_device);
 }

 fs_initcall(sharpsl_pcmcia_init);
 module_exit(sharpsl_pcmcia_exit);
 #endif

 MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
 MODULE_LICENSE("GPL");
	/*
	* Sharp SL-C7xx Series PCMCIA routines
	*
	* Copyright (c) 2004-2005 Richard Purdie
	*
	* Based on Sharp's 2.4 kernel patches and pxa2xx_mainstone.c
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 as
	* published by the Free Software Foundation.
	*
	*/

	#include <linux/module.h>
	#include <linux/init.h>
	#include <linux/kernel.h>
	#include <linux/errno.h>
	#include <linux/interrupt.h>
	#include <linux/platform_device.h>

	#include <asm/mach-types.h>
	#include <asm/hardware.h>
	#include <asm/irq.h>
	#include <asm/hardware/scoop.h>
	#ifdef CONFIG_SA1100_COLLIE
	#include <asm/arch-sa1100/collie.h>
	#else
	#include <asm/arch-pxa/pxa-regs.h>
	#endif

	#include "soc_common.h"

	#define NO_KEEP_VS 0x0001

	static void sharpsl_pcmcia_init_reset(struct scoop_pcmcia_dev *scoopdev)
	{
	reset_scoop(scoopdev->dev);
	scoopdev->keep_vs = NO_KEEP_VS;
	scoopdev->keep_rd = 0;
	}

	static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	{
	int ret;

	#ifndef CONFIG_SA1100_COLLIE
	/*
	* Setup default state of GPIO outputs
	* before we enable them as outputs.
	*/
	GPSR(GPIO48_nPOE) =
	GPIO_bit(GPIO48_nPOE) \|
	GPIO_bit(GPIO49_nPWE) \|
	GPIO_bit(GPIO50_nPIOR) \|
	GPIO_bit(GPIO51_nPIOW) \|
	GPIO_bit(GPIO52_nPCE_1) \|
	GPIO_bit(GPIO53_nPCE_2);

	pxa_gpio_mode(GPIO48_nPOE_MD);
	pxa_gpio_mode(GPIO49_nPWE_MD);
	pxa_gpio_mode(GPIO50_nPIOR_MD);
	pxa_gpio_mode(GPIO51_nPIOW_MD);
	pxa_gpio_mode(GPIO52_nPCE_1_MD);
	pxa_gpio_mode(GPIO53_nPCE_2_MD);
	pxa_gpio_mode(GPIO54_pSKTSEL_MD);
	pxa_gpio_mode(GPIO55_nPREG_MD);
	pxa_gpio_mode(GPIO56_nPWAIT_MD);
	pxa_gpio_mode(GPIO57_nIOIS16_MD);
	#endif

	/* Register interrupts */
	if (scoop_devs[skt->nr].cd_irq >= 0) {
	struct pcmcia_irqs cd_irq;

	cd_irq.sock = skt->nr;
	cd_irq.irq = scoop_devs[skt->nr].cd_irq;
	cd_irq.str = scoop_devs[skt->nr].cd_irq_str;
	ret = soc_pcmcia_request_irqs(skt, &cd_irq, 1);

	if (ret) {
	printk(KERN_ERR "Request for Compact Flash IRQ failed\n");
	return ret;
	}
	}

	skt->irq = scoop_devs[skt->nr].irq;

	return 0;
	}

	static void sharpsl_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	{
	if (scoop_devs[skt->nr].cd_irq >= 0) {
	struct pcmcia_irqs cd_irq;

	cd_irq.sock = skt->nr;
	cd_irq.irq = scoop_devs[skt->nr].cd_irq;
	cd_irq.str = scoop_devs[skt->nr].cd_irq_str;
	soc_pcmcia_free_irqs(skt, &cd_irq, 1);
	}
	}


	static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	struct pcmcia_state *state)
	{
	unsigned short cpr, csr;
	struct device *scoop = scoop_devs[skt->nr].dev;

	cpr = read_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR);

	write_scoop_reg(scoop, SCOOP_IRM, 0x00FF);
	write_scoop_reg(scoop, SCOOP_ISR, 0x0000);
	write_scoop_reg(scoop, SCOOP_IRM, 0x0000);
	csr = read_scoop_reg(scoop, SCOOP_CSR);
	if (csr & 0x0004) {
	/* card eject */
	write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
	scoop_devs[skt->nr].keep_vs = NO_KEEP_VS;
	}
	else if (!(scoop_devs[skt->nr].keep_vs & NO_KEEP_VS)) {
	/* keep vs1,vs2 */
	write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
	csr \|= scoop_devs[skt->nr].keep_vs;
	}
	else if (cpr & 0x0003) {
	/* power on */
	write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
	scoop_devs[skt->nr].keep_vs = (csr & 0x00C0);
	}
	else {
	/* card detect */
	write_scoop_reg(scoop, SCOOP_CDR, 0x0002);
	}

	state->detect = (csr & 0x0004) ? 0 : 1;
	state->ready = (csr & 0x0002) ? 1 : 0;
	state->bvd1 = (csr & 0x0010) ? 1 : 0;
	state->bvd2 = (csr & 0x0020) ? 1 : 0;
	state->wrprot = (csr & 0x0008) ? 1 : 0;
	state->vs_3v = (csr & 0x0040) ? 0 : 1;
	state->vs_Xv = (csr & 0x0080) ? 0 : 1;

	if ((cpr & 0x0080) && ((cpr & 0x8040) != 0x8040)) {
	printk(KERN_ERR "sharpsl_pcmcia_socket_state(): CPR=%04X, Low voltage!\n", cpr);
	}

	}


	static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	const socket_state_t *state)
	{
	unsigned long flags;
	struct device *scoop = scoop_devs[skt->nr].dev;

	unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr;

	switch (state->Vcc) {
	case 0: break;
	case 33: break;
	case 50: break;
	default:
	printk(KERN_ERR "sharpsl_pcmcia_configure_socket(): bad Vcc %u\n", state->Vcc);
	return -1;
	}

	if ((state->Vpp!=state->Vcc) && (state->Vpp!=0)) {
	printk(KERN_ERR "CF slot cannot support Vpp %u\n", state->Vpp);
	return -1;
	}

	local_irq_save(flags);

	nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010;
	ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083;
	nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080;
	nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E;

	ncpr \|= (state->Vcc == 33) ? 0x0001 :
	(state->Vcc == 50) ? 0x0002 : 0;
	nmcr \|= (state->flags&SS_IOCARD) ? 0x0010 : 0;
	ncpr \|= (state->flags&SS_OUTPUT_ENA) ? 0x0080 : 0;
	nccr \|= (state->flags&SS_RESET)? 0x0080: 0;
	nimr \|= ((skt->status&SS_DETECT) ? 0x0004 : 0)\|
	((skt->status&SS_READY) ? 0x0002 : 0)\|
	((skt->status&SS_BATDEAD)? 0x0010 : 0)\|
	((skt->status&SS_BATWARN)? 0x0020 : 0)\|
	((skt->status&SS_STSCHG) ? 0x0010 : 0)\|
	((skt->status&SS_WRPROT) ? 0x0008 : 0);

	if (!(ncpr & 0x0003)) {
	scoop_devs[skt->nr].keep_rd = 0;
	} else if (!scoop_devs[skt->nr].keep_rd) {
	if (nccr & 0x0080)
	scoop_devs[skt->nr].keep_rd = 1;
	else
	nccr \|= 0x0080;
	}

	if (mcr != nmcr)
	write_scoop_reg(scoop, SCOOP_MCR, nmcr);
	if (cpr != ncpr)
	write_scoop_reg(scoop, SCOOP_CPR, ncpr);
	if (ccr != nccr)
	write_scoop_reg(scoop, SCOOP_CCR, nccr);
	if (imr != nimr)
	write_scoop_reg(scoop, SCOOP_IMR, nimr);

	local_irq_restore(flags);

	return 0;
	}

	static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
	{
	sharpsl_pcmcia_init_reset(&scoop_devs[skt->nr]);

	/* Enable interrupt */
	write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_IMR, 0x00C0);
	write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_MCR, 0x0101);
	scoop_devs[skt->nr].keep_vs = NO_KEEP_VS;

	if (machine_is_collie())
	/* We need to disable SS_OUTPUT_ENA here. */
	write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR, read_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR) & ~0x0080);
	}

	static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
	{
	/* CF_BUS_OFF */
	sharpsl_pcmcia_init_reset(&scoop_devs[skt->nr]);

	if (machine_is_collie())
	/* We need to disable SS_OUTPUT_ENA here. */
	write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR, read_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR) & ~0x0080);
	}

	static struct pcmcia_low_level sharpsl_pcmcia_ops = {
	.owner = THIS_MODULE,
	.hw_init = sharpsl_pcmcia_hw_init,
	.hw_shutdown = sharpsl_pcmcia_hw_shutdown,
	.socket_state = sharpsl_pcmcia_socket_state,
	.configure_socket = sharpsl_pcmcia_configure_socket,
	.socket_init = sharpsl_pcmcia_socket_init,
	.socket_suspend = sharpsl_pcmcia_socket_suspend,
	.first = 0,
	.nr = 0,
	};

	static struct platform_device *sharpsl_pcmcia_device;

	#ifdef CONFIG_SA1100_COLLIE
	int __init pcmcia_collie_init(struct device *dev)
	{
	int ret = -ENODEV;

	if (machine_is_collie())
	ret = sa11xx_drv_pcmcia_probe(dev, &sharpsl_pcmcia_ops, 0, 1);

	return ret;
	}

	#else

	static int __init sharpsl_pcmcia_init(void)
	{
	int ret;

	sharpsl_pcmcia_ops.nr=scoop_num;
	sharpsl_pcmcia_device = kmalloc(sizeof(*sharpsl_pcmcia_device), GFP_KERNEL);
	if (!sharpsl_pcmcia_device)
	return -ENOMEM;

	memset(sharpsl_pcmcia_device, 0, sizeof(*sharpsl_pcmcia_device));
	sharpsl_pcmcia_device->name = "pxa2xx-pcmcia";
	sharpsl_pcmcia_device->dev.platform_data = &sharpsl_pcmcia_ops;
	sharpsl_pcmcia_device->dev.parent=scoop_devs[0].dev;

	ret = platform_device_register(sharpsl_pcmcia_device);
	if (ret)
	kfree(sharpsl_pcmcia_device);

	return ret;
	}

	static void __exit sharpsl_pcmcia_exit(void)
	{
	/*
	* This call is supposed to free our sharpsl_pcmcia_device.
	* Unfortunately platform_device don't have a free method, and
	* we can't assume it's free of any reference at this point so we
	* can't free it either.
	*/
	platform_device_unregister(sharpsl_pcmcia_device);
	}

	fs_initcall(sharpsl_pcmcia_init);
	module_exit(sharpsl_pcmcia_exit);
	#endif

	MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
	MODULE_LICENSE("GPL");