sonypi.c

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			break;
		case SONYPI_COMMAND_GETCAMERACONTRAST:
			ret = sonypi_read(SONYPI_CAMERA_CONTRAST);
			break;
		case SONYPI_COMMAND_SETCAMERACONTRAST:
			sonypi_set(SONYPI_CAMERA_CONTRAST, value);
			break;
		case SONYPI_COMMAND_GETCAMERAHUE:
			ret = sonypi_read(SONYPI_CAMERA_HUE);
			break;
		case SONYPI_COMMAND_SETCAMERAHUE:
			sonypi_set(SONYPI_CAMERA_HUE, value);
			break;
		case SONYPI_COMMAND_GETCAMERACOLOR:
			ret = sonypi_read(SONYPI_CAMERA_COLOR);
			break;
		case SONYPI_COMMAND_SETCAMERACOLOR:
			sonypi_set(SONYPI_CAMERA_COLOR, value);
			break;
		case SONYPI_COMMAND_GETCAMERASHARPNESS:
			ret = sonypi_read(SONYPI_CAMERA_SHARPNESS);
			break;
		case SONYPI_COMMAND_SETCAMERASHARPNESS:
			sonypi_set(SONYPI_CAMERA_SHARPNESS, value);
			break;
		case SONYPI_COMMAND_GETCAMERAPICTURE:
			ret = sonypi_read(SONYPI_CAMERA_PICTURE);
			break;
		case SONYPI_COMMAND_SETCAMERAPICTURE:
			sonypi_set(SONYPI_CAMERA_PICTURE, value);
			break;
		case SONYPI_COMMAND_GETCAMERAAGC:
			ret = sonypi_read(SONYPI_CAMERA_AGC);
			break;
		case SONYPI_COMMAND_SETCAMERAAGC:
			sonypi_set(SONYPI_CAMERA_AGC, value);
			break;
		case SONYPI_COMMAND_GETCAMERADIRECTION:
			ret = sonypi_read(SONYPI_CAMERA_STATUS);
			ret &= SONYPI_DIRECTION_BACKWARDS;
			break;
		case SONYPI_COMMAND_GETCAMERAROMVERSION:
			ret = sonypi_read(SONYPI_CAMERA_ROMVERSION);
			break;
		case SONYPI_COMMAND_GETCAMERAREVISION:
			ret = sonypi_read(SONYPI_CAMERA_REVISION);
			break;
	}
	up(&sonypi_device.lock);
	return ret;
}

static int sonypi_misc_fasync(int fd, struct file *filp, int on) {
	int retval;

	retval = fasync_helper(fd, filp, on, &sonypi_device.queue.fasync);
	if (retval < 0)
		return retval;
	return 0;
}

static int sonypi_misc_release(struct inode * inode, struct file * file) {
	sonypi_misc_fasync(-1, file, 0);
	down(&sonypi_device.lock);
	sonypi_device.open_count--;
	up(&sonypi_device.lock);
	return 0;
}

static int sonypi_misc_open(struct inode * inode, struct file * file) {
	down(&sonypi_device.lock);
	if (sonypi_device.open_count)
		goto out;
	sonypi_device.open_count++;
	/* Flush input queue */
	sonypi_initq();
out:
	up(&sonypi_device.lock);
	return 0;
}

static ssize_t sonypi_misc_read(struct file * file, char * buf, 
		                size_t count, loff_t *pos) {
	DECLARE_WAITQUEUE(wait, current);
	ssize_t i = count;
	unsigned char c;

	if (sonypi_emptyq()) {
		if (file->f_flags & O_NONBLOCK)
			return -EAGAIN;
		add_wait_queue(&sonypi_device.queue.proc_list, &wait);
repeat:
		set_current_state(TASK_INTERRUPTIBLE);
		if (sonypi_emptyq() && !signal_pending(current)) {
			schedule();
			goto repeat;
		}
		current->state = TASK_RUNNING;
		remove_wait_queue(&sonypi_device.queue.proc_list, &wait);
	}
	while (i > 0 && !sonypi_emptyq()) {
		c = sonypi_pullq();
		put_user(c, buf++);
		i--;
        }
	if (count - i) {
		file->f_dentry->d_inode->i_atime = CURRENT_TIME;
		return count-i;
	}
	if (signal_pending(current))
		return -ERESTARTSYS;
	return 0;
}

static unsigned int sonypi_misc_poll(struct file *file, poll_table * wait) {
	poll_wait(file, &sonypi_device.queue.proc_list, wait);
	if (!sonypi_emptyq())
		return POLLIN | POLLRDNORM;
	return 0;
}

static int sonypi_misc_ioctl(struct inode *ip, struct file *fp, 
			     unsigned int cmd, unsigned long arg) {
	int ret = 0;
	u8 val8;
	u16 val16;

	down(&sonypi_device.lock);
	switch (cmd) {
	case SONYPI_IOCGBRT:
		val8 = sonypi_ecrget(0x96);
		if (copy_to_user((u8 *)arg, &val8, sizeof(val8))) {
			ret = -EFAULT;
			goto out;
		}
		break;
	case SONYPI_IOCSBRT:
		if (copy_from_user(&val8, (u8 *)arg, sizeof(val8))) {
			ret = -EFAULT;
			goto out;
		}
		sonypi_ecrset(0x96, val8);
		break;
	case SONYPI_IOCGBAT1CAP:
		val16 = sonypi_ecrget16(0xb2);
		if (copy_to_user((u16 *)arg, &val16, sizeof(val16))) {
			ret = -EFAULT;
			goto out;
		}
		break;
	case SONYPI_IOCGBAT1REM:
		val16 = sonypi_ecrget16(0xa2);
		if (copy_to_user((u16 *)arg, &val16, sizeof(val16))) {
			ret = -EFAULT;
			goto out;
		}
		break;
	case SONYPI_IOCGBAT2CAP:
		val16 = sonypi_ecrget16(0xba);
		if (copy_to_user((u16 *)arg, &val16, sizeof(val16))) {
			ret = -EFAULT;
			goto out;
		}
		break;
	case SONYPI_IOCGBAT2REM:
		val16 = sonypi_ecrget16(0xaa);
		if (copy_to_user((u16 *)arg, &val16, sizeof(val16))) {
			ret = -EFAULT;
			goto out;
		}
		break;
	case SONYPI_IOCGBATFLAGS:
		val8 = sonypi_ecrget(0x81) & 0x07;
		if (copy_to_user((u8 *)arg, &val8, sizeof(val8))) {
			ret = -EFAULT;
			goto out;
		}
		break;
	case SONYPI_IOCGBLUE:
		val8 = sonypi_device.bluetooth_power;
		if (copy_to_user((u8 *)arg, &val8, sizeof(val8))) {
			ret = -EFAULT;
			goto out;
		}
		break;
	case SONYPI_IOCSBLUE:
		if (copy_from_user(&val8, (u8 *)arg, sizeof(val8))) {
			ret = -EFAULT;
			goto out;
		}
		sonypi_setbluetoothpower(val8);
		break;
	default:
		ret = -EINVAL;
	}
out:
	up(&sonypi_device.lock);
	return ret;
}

static struct file_operations sonypi_misc_fops = {
	owner:		THIS_MODULE,
	read:		sonypi_misc_read,
	poll:		sonypi_misc_poll,
	open:		sonypi_misc_open,
	release:	sonypi_misc_release,
	fasync: 	sonypi_misc_fasync,
	ioctl:		sonypi_misc_ioctl,
};

struct miscdevice sonypi_misc_device = {
	-1, "sonypi", &sonypi_misc_fops
};

static int __devinit sonypi_probe(struct pci_dev *pcidev) {
	int i, ret;
	struct sonypi_ioport_list *ioport_list;
	struct sonypi_irq_list *irq_list;

	sonypi_device.dev = pcidev;
	if (pcidev)
		sonypi_device.model = SONYPI_DEVICE_MODEL_TYPE1;
	else
		sonypi_device.model = SONYPI_DEVICE_MODEL_TYPE2;
	sonypi_initq();
	init_MUTEX(&sonypi_device.lock);
	sonypi_device.bluetooth_power = 0;
	
	if (pcidev && pci_enable_device(pcidev)) {
		printk(KERN_ERR "sonypi: pci_enable_device failed\n");
		ret = -EIO;
		goto out1;
	}

	sonypi_misc_device.minor = (minor == -1) ? 
		MISC_DYNAMIC_MINOR : minor;
	if ((ret = misc_register(&sonypi_misc_device))) {
		printk(KERN_ERR "sonypi: misc_register failed\n");
		goto out1;
	}

	if (sonypi_device.model == SONYPI_DEVICE_MODEL_TYPE2) {
		ioport_list = sonypi_type2_ioport_list;
		sonypi_device.region_size = SONYPI_TYPE2_REGION_SIZE;
		irq_list = sonypi_type2_irq_list;
	}
	else {
		ioport_list = sonypi_type1_ioport_list;
		sonypi_device.region_size = SONYPI_TYPE1_REGION_SIZE;
		irq_list = sonypi_type1_irq_list;
	}

	for (i = 0; ioport_list[i].port1; i++) {
		if (request_region(ioport_list[i].port1, 
				   sonypi_device.region_size, 
				   "Sony Programable I/O Device")) {
			/* get the ioport */
			sonypi_device.ioport1 = ioport_list[i].port1;
			sonypi_device.ioport2 = ioport_list[i].port2;
			break;
		}
	}
	if (!sonypi_device.ioport1) {
		printk(KERN_ERR "sonypi: request_region failed\n");
		ret = -ENODEV;
		goto out2;
	}

	for (i = 0; irq_list[i].irq; i++) {
		if (!request_irq(irq_list[i].irq, sonypi_irq, 
				 SA_SHIRQ, "sonypi", sonypi_irq)) {
			sonypi_device.irq = irq_list[i].irq;
			sonypi_device.bits = irq_list[i].bits;
			break;
		}
	}
	if (!sonypi_device.irq ) {
		printk(KERN_ERR "sonypi: request_irq failed\n");
		ret = -ENODEV;
		goto out3;
	}

#if !defined(CONFIG_ACPI)
	/* Enable ACPI mode to get Fn key events */
	if (fnkeyinit)
		outb(0xf0, 0xb2);
#endif

	if (sonypi_device.model == SONYPI_DEVICE_MODEL_TYPE2)
		sonypi_type2_srs();
	else
		sonypi_type1_srs();

	sonypi_call1(0x82);
	sonypi_call2(0x81, 0xff);
	if (compat)
		sonypi_call1(0x92); 
	else
		sonypi_call1(0x82);

	printk(KERN_INFO "sonypi: Sony Programmable I/O Controller Driver v%d.%d.\n",
	       SONYPI_DRIVER_MAJORVERSION,
	       SONYPI_DRIVER_MINORVERSION);
	printk(KERN_INFO "sonypi: detected %s model, "
	       "camera = %s, compat = %s\n",
	       (sonypi_device.model == SONYPI_DEVICE_MODEL_TYPE1) ?
			"type1" : "type2",
	       camera ? "on" : "off",
	       compat ? "on" : "off");
	printk(KERN_INFO "sonypi: enabled at irq=%d, port1=0x%x, port2=0x%x\n",
	       sonypi_device.irq, 
	       sonypi_device.ioport1, sonypi_device.ioport2);
	if (minor == -1)
		printk(KERN_INFO "sonypi: device allocated minor is %d\n",
		       sonypi_misc_device.minor);

	return 0;

out3:
	release_region(sonypi_device.ioport1, sonypi_device.region_size);
out2:
	misc_deregister(&sonypi_misc_device);
out1:
	return ret;
}

static void __devexit sonypi_remove(void) {
	sonypi_call2(0x81, 0); /* make sure we don't get any more events */
	if (camera)
		sonypi_camera_off();
	if (sonypi_device.model == SONYPI_DEVICE_MODEL_TYPE2)
		sonypi_type2_dis();
	else
		sonypi_type1_dis();
#if !defined(CONFIG_ACPI)
	/* disable ACPI mode */
	if (fnkeyinit)
		outb(0xf1, 0xb2);
#endif
	free_irq(sonypi_device.irq, sonypi_irq);
	release_region(sonypi_device.ioport1, sonypi_device.region_size);
	misc_deregister(&sonypi_misc_device);
	printk(KERN_INFO "sonypi: removed.\n");
}

static int __init sonypi_init_module(void) {
	struct pci_dev *pcidev = NULL;

	if (is_sony_vaio_laptop) {
		pcidev = pci_find_device(PCI_VENDOR_ID_INTEL, 
					 PCI_DEVICE_ID_INTEL_82371AB_3, 
					 NULL);
		return sonypi_probe(pcidev);
	}
	else
		return -ENODEV;
}

static void __exit sonypi_cleanup_module(void) {
	sonypi_remove();
}

#ifndef MODULE
static int __init sonypi_setup(char *str)  {
	int ints[6];

	str = get_options(str, ARRAY_SIZE(ints), ints);
	if (ints[0] <= 0) 
		goto out;
	minor = ints[1];
	if (ints[0] == 1)
		goto out;
	verbose = ints[2];
	if (ints[0] == 2)
		goto out;
	fnkeyinit = ints[3];
	if (ints[0] == 3)
		goto out;
	camera = ints[4];
	if (ints[0] == 4)
		goto out;
	compat = ints[5];
out:
	return 1;
}

__setup("sonypi=", sonypi_setup);
#endif /* !MODULE */
	
/* Module entry points */
module_init(sonypi_init_module);
module_exit(sonypi_cleanup_module);

MODULE_AUTHOR("Stelian Pop <[e-mail]>");
MODULE_DESCRIPTION("Sony Programmable I/O Control Device driver");
MODULE_LICENSE("GPL");


MODULE_PARM(minor,"i");
MODULE_PARM_DESC(minor, "minor number of the misc device, default is -1 (automatic)");
MODULE_PARM(verbose,"i");
MODULE_PARM_DESC(verbose, "be verbose, default is 0 (no)");
MODULE_PARM(fnkeyinit,"i");
MODULE_PARM_DESC(fnkeyinit, "set this if your Fn keys do not generate any event");
MODULE_PARM(camera,"i");
MODULE_PARM_DESC(camera, "set this if you have a MotionEye camera (PictureBook series)");
MODULE_PARM(compat,"i");
MODULE_PARM_DESC(compat, "set this if you want to enable backward compatibility mode");

EXPORT_SYMBOL(sonypi_camera_command);