sonypi.c

来自「Linux Kernel 2.6.9 for OMAP1710」· C语言 代码 · 共 965 行 · 第 1/2 页

		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;
	void __user *argp = (void __user *)arg;
	u8 val8;
	u16 val16;

	down(&sonypi_device.lock);
	switch (cmd) {
	case SONYPI_IOCGBRT:
		if (sonypi_ec_read(SONYPI_LCD_LIGHT, &val8)) {
			ret = -EIO;
			break;
		}
		if (copy_to_user(argp, &val8, sizeof(val8)))
			ret = -EFAULT;
		break;
	case SONYPI_IOCSBRT:
		if (copy_from_user(&val8, argp, sizeof(val8))) {
			ret = -EFAULT;
			break;
		}
		if (sonypi_ec_write(SONYPI_LCD_LIGHT, val8))
			ret = -EIO;
		break;
	case SONYPI_IOCGBAT1CAP:
		if (ec_read16(SONYPI_BAT1_FULL, &val16)) {
			ret = -EIO;
			break;
		}
		if (copy_to_user(argp, &val16, sizeof(val16)))
			ret = -EFAULT;
		break;
	case SONYPI_IOCGBAT1REM:
		if (ec_read16(SONYPI_BAT1_LEFT, &val16)) {
			ret = -EIO;
			break;
		}
		if (copy_to_user(argp, &val16, sizeof(val16)))
			ret = -EFAULT;
		break;
	case SONYPI_IOCGBAT2CAP:
		if (ec_read16(SONYPI_BAT2_FULL, &val16)) {
			ret = -EIO;
			break;
		}
		if (copy_to_user(argp, &val16, sizeof(val16)))
			ret = -EFAULT;
		break;
	case SONYPI_IOCGBAT2REM:
		if (ec_read16(SONYPI_BAT2_LEFT, &val16)) {
			ret = -EIO;
			break;
		}
		if (copy_to_user(argp, &val16, sizeof(val16)))
			ret = -EFAULT;
		break;
	case SONYPI_IOCGBATFLAGS:
		if (sonypi_ec_read(SONYPI_BAT_FLAGS, &val8)) {
			ret = -EIO;
			break;
		}
		val8 &= 0x07;
		if (copy_to_user(argp, &val8, sizeof(val8)))
			ret = -EFAULT;
		break;
	case SONYPI_IOCGBLUE:
		val8 = sonypi_device.bluetooth_power;
		if (copy_to_user(argp, &val8, sizeof(val8)))
			ret = -EFAULT;
		break;
	case SONYPI_IOCSBLUE:
		if (copy_from_user(&val8, argp, sizeof(val8))) {
			ret = -EFAULT;
			break;
		}
		sonypi_setbluetoothpower(val8);
		break;
	default:
		ret = -EINVAL;
	}
	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
};

#ifdef CONFIG_PM
static int old_camera_power;

static int sonypi_suspend(struct sys_device *dev, u32 state) {
	sonypi_call2(0x81, 0); /* make sure we don't get any more events */
	if (camera) {
		old_camera_power = sonypi_device.camera_power;
		sonypi_camera_off();
	}
	if (sonypi_device.model == SONYPI_DEVICE_MODEL_TYPE2)
		sonypi_type2_dis();
	else
		sonypi_type1_dis();
	/* disable ACPI mode */
	if (!SONYPI_ACPI_ACTIVE && fnkeyinit)
		outb(0xf1, 0xb2);
	return 0;
}

static int sonypi_resume(struct sys_device *dev) {
	/* Enable ACPI mode to get Fn key events */
	if (!SONYPI_ACPI_ACTIVE && fnkeyinit)
		outb(0xf0, 0xb2);
	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);
	if (camera && old_camera_power)
		sonypi_camera_on();
	return 0;
}

/* Old PM scheme */
static int sonypi_pm_callback(struct pm_dev *dev, pm_request_t rqst, void *data) {

	switch (rqst) {
		case PM_SUSPEND:
			sonypi_suspend(NULL, 0);
			break;
		case PM_RESUME:
			sonypi_resume(NULL);
			break;
	}
	return 0;
}

/* New PM scheme (device model) */
static struct sysdev_class sonypi_sysclass = {
	set_kset_name("sonypi"),
	.suspend = sonypi_suspend,
	.resume = sonypi_resume,
};

static struct sys_device sonypi_sysdev = {
	.id = 0,
	.cls = &sonypi_sysclass,
};
#endif

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;
		sonypi_device.evtype_offset = SONYPI_TYPE2_EVTYPE_OFFSET;
		irq_list = sonypi_type2_irq_list;
	}
	else {
		ioport_list = sonypi_type1_ioport_list;
		sonypi_device.region_size = SONYPI_TYPE1_REGION_SIZE;
		sonypi_device.evtype_offset = SONYPI_TYPE1_EVTYPE_OFFSET;
		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++) {

		sonypi_device.irq = irq_list[i].irq;
		sonypi_device.bits = irq_list[i].bits;

		/* Enable sonypi IRQ settings */
		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);

		/* Now try requesting the irq from the system */
		if (!request_irq(sonypi_device.irq, sonypi_irq, 
				 SA_SHIRQ, "sonypi", sonypi_irq))
			break;

		/* If request_irq failed, disable sonypi IRQ settings */
		if (sonypi_device.model == SONYPI_DEVICE_MODEL_TYPE2)
			sonypi_type2_dis();
		else
			sonypi_type1_dis();
	}

	if (!irq_list[i].irq) {
		printk(KERN_ERR "sonypi: request_irq failed\n");
		ret = -ENODEV;
		goto out3;
	}

#ifdef CONFIG_PM
	sonypi_device.pm = pm_register(PM_PCI_DEV, 0, sonypi_pm_callback);

	if (sysdev_class_register(&sonypi_sysclass) != 0) {
		printk(KERN_ERR "sonypi: sysdev_class_register failed\n");
		ret = -ENODEV;
		goto out4;
	}
	if (sysdev_register(&sonypi_sysdev) != 0) {
		printk(KERN_ERR "sonypi: sysdev_register failed\n");
		ret = -ENODEV;
		goto out5;
	}
#endif

	/* Enable ACPI mode to get Fn key events */
	if (!SONYPI_ACPI_ACTIVE && fnkeyinit)
		outb(0xf0, 0xb2);

	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, "
	       "verbose = %d, fnkeyinit = %s, camera = %s, "
	       "compat = %s, mask = 0x%08lx, useinput = %s, acpi = %s\n",
	       (sonypi_device.model == SONYPI_DEVICE_MODEL_TYPE1) ?
			"type1" : "type2",
	       verbose,
	       fnkeyinit ? "on" : "off",
	       camera ? "on" : "off",
	       compat ? "on" : "off",
	       mask,
	       useinput ? "on" : "off",
	       SONYPI_ACPI_ACTIVE ? "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);

#ifdef SONYPI_USE_INPUT
	if (useinput) {
		/* Initialize the Input Drivers: */
		sonypi_device.jog_dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
		sonypi_device.jog_dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_MIDDLE);
		sonypi_device.jog_dev.relbit[0] = BIT(REL_WHEEL);
		sonypi_device.jog_dev.name = (char *) kmalloc(
			sizeof(SONYPI_INPUTNAME), GFP_KERNEL);
		sprintf(sonypi_device.jog_dev.name, SONYPI_INPUTNAME);
		sonypi_device.jog_dev.id.bustype = BUS_ISA;
		sonypi_device.jog_dev.id.vendor = PCI_VENDOR_ID_SONY;
	  
		input_register_device(&sonypi_device.jog_dev);
		printk(KERN_INFO "%s installed.\n", sonypi_device.jog_dev.name);
	}
#endif /* SONYPI_USE_INPUT */

	return 0;

#ifdef CONFIG_PM
out5:
	sysdev_class_unregister(&sonypi_sysclass);
out4:
	free_irq(sonypi_device.irq, sonypi_irq);
#endif
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) {

#ifdef CONFIG_PM
	pm_unregister(sonypi_device.pm);

	sysdev_unregister(&sonypi_sysdev);
	sysdev_class_unregister(&sonypi_sysclass);
#endif

	sonypi_call2(0x81, 0); /* make sure we don't get any more events */
	
#ifdef SONYPI_USE_INPUT
	if (useinput) {
		input_unregister_device(&sonypi_device.jog_dev);
		kfree(sonypi_device.jog_dev.name);
	}
#endif /* SONYPI_USE_INPUT */

	if (camera)
		sonypi_camera_off();
	if (sonypi_device.model == SONYPI_DEVICE_MODEL_TYPE2)
		sonypi_type2_dis();
	else
		sonypi_type1_dis();
	/* disable ACPI mode */
	if (!SONYPI_ACPI_ACTIVE && fnkeyinit)
		outb(0xf1, 0xb2);
	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 struct dmi_system_id __initdata sonypi_dmi_table[] = {
	{
		.ident = "Sony Vaio",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
			DMI_MATCH(DMI_PRODUCT_NAME, "PCG-"),
		},
	},
	{
		.ident = "Sony Vaio",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
			DMI_MATCH(DMI_PRODUCT_NAME, "VGN-"),
		},
	},
	{ }
};

static int __init sonypi_init_module(void)
{
	struct pci_dev *pcidev = NULL;
	if (dmi_check_system(sonypi_dmi_table)) {
		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[8];

	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];
	if (ints[0] == 5)
		goto out;
	mask = ints[6];
	if (ints[0] == 6)
		goto out;
	useinput = ints[7];
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");
MODULE_PARM(mask, "i");
MODULE_PARM_DESC(mask, "set this to the mask of event you want to enable (see doc)");
MODULE_PARM(useinput, "i");
MODULE_PARM_DESC(useinput, "if you have a jogdial, set this if you would like it to use the modern Linux Input Driver system");

EXPORT_SYMBOL(sonypi_camera_command);