it87.c

ite_8075 io source code temperature and fan speed control for linux

	return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
}
static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);

static ssize_t
show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct it87_data *data = dev_get_drvdata(dev);
	return sprintf(buf, "%u\n", data->vrm);
}
static ssize_t
store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct it87_data *data = dev_get_drvdata(dev);
	u32 val;

	val = simple_strtoul(buf, NULL, 10);
	data->vrm = val;

	return count;
}
static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);

static ssize_t
show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct it87_data *data = it87_update_device(dev);
	return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
}
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);

static ssize_t show_name(struct device *dev, struct device_attribute
			 *devattr, char *buf)
{
	struct it87_data *data = dev_get_drvdata(dev);
	return sprintf(buf, "%s\n", data->name);
}
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);

static struct attribute *it87_attributes[] = {
	&sensor_dev_attr_in0_input.dev_attr.attr,
	&sensor_dev_attr_in1_input.dev_attr.attr,
	&sensor_dev_attr_in2_input.dev_attr.attr,
	&sensor_dev_attr_in3_input.dev_attr.attr,
	&sensor_dev_attr_in4_input.dev_attr.attr,
	&sensor_dev_attr_in5_input.dev_attr.attr,
	&sensor_dev_attr_in6_input.dev_attr.attr,
	&sensor_dev_attr_in7_input.dev_attr.attr,
	&sensor_dev_attr_in8_input.dev_attr.attr,
	&sensor_dev_attr_in0_min.dev_attr.attr,
	&sensor_dev_attr_in1_min.dev_attr.attr,
	&sensor_dev_attr_in2_min.dev_attr.attr,
	&sensor_dev_attr_in3_min.dev_attr.attr,
	&sensor_dev_attr_in4_min.dev_attr.attr,
	&sensor_dev_attr_in5_min.dev_attr.attr,
	&sensor_dev_attr_in6_min.dev_attr.attr,
	&sensor_dev_attr_in7_min.dev_attr.attr,
	&sensor_dev_attr_in0_max.dev_attr.attr,
	&sensor_dev_attr_in1_max.dev_attr.attr,
	&sensor_dev_attr_in2_max.dev_attr.attr,
	&sensor_dev_attr_in3_max.dev_attr.attr,
	&sensor_dev_attr_in4_max.dev_attr.attr,
	&sensor_dev_attr_in5_max.dev_attr.attr,
	&sensor_dev_attr_in6_max.dev_attr.attr,
	&sensor_dev_attr_in7_max.dev_attr.attr,
	&sensor_dev_attr_in0_alarm.dev_attr.attr,
	&sensor_dev_attr_in1_alarm.dev_attr.attr,
	&sensor_dev_attr_in2_alarm.dev_attr.attr,
	&sensor_dev_attr_in3_alarm.dev_attr.attr,
	&sensor_dev_attr_in4_alarm.dev_attr.attr,
	&sensor_dev_attr_in5_alarm.dev_attr.attr,
	&sensor_dev_attr_in6_alarm.dev_attr.attr,
	&sensor_dev_attr_in7_alarm.dev_attr.attr,

	&sensor_dev_attr_temp1_input.dev_attr.attr,
	&sensor_dev_attr_temp2_input.dev_attr.attr,
	&sensor_dev_attr_temp3_input.dev_attr.attr,
	&sensor_dev_attr_temp1_max.dev_attr.attr,
	&sensor_dev_attr_temp2_max.dev_attr.attr,
	&sensor_dev_attr_temp3_max.dev_attr.attr,
	&sensor_dev_attr_temp1_min.dev_attr.attr,
	&sensor_dev_attr_temp2_min.dev_attr.attr,
	&sensor_dev_attr_temp3_min.dev_attr.attr,
	&sensor_dev_attr_temp1_type.dev_attr.attr,
	&sensor_dev_attr_temp2_type.dev_attr.attr,
	&sensor_dev_attr_temp3_type.dev_attr.attr,
	&sensor_dev_attr_temp1_alarm.dev_attr.attr,
	&sensor_dev_attr_temp2_alarm.dev_attr.attr,
	&sensor_dev_attr_temp3_alarm.dev_attr.attr,

	&dev_attr_alarms.attr,
	&dev_attr_name.attr,
	NULL
};

static const struct attribute_group it87_group = {
	.attrs = it87_attributes,
};

static struct attribute *it87_attributes_opt[] = {
	&sensor_dev_attr_fan1_input16.dev_attr.attr,
	&sensor_dev_attr_fan1_min16.dev_attr.attr,
	&sensor_dev_attr_fan2_input16.dev_attr.attr,
	&sensor_dev_attr_fan2_min16.dev_attr.attr,
	&sensor_dev_attr_fan3_input16.dev_attr.attr,
	&sensor_dev_attr_fan3_min16.dev_attr.attr,
	&sensor_dev_attr_fan4_input16.dev_attr.attr,
	&sensor_dev_attr_fan4_min16.dev_attr.attr,
	&sensor_dev_attr_fan5_input16.dev_attr.attr,
	&sensor_dev_attr_fan5_min16.dev_attr.attr,

	&sensor_dev_attr_fan1_input.dev_attr.attr,
	&sensor_dev_attr_fan1_min.dev_attr.attr,
	&sensor_dev_attr_fan1_div.dev_attr.attr,
	&sensor_dev_attr_fan2_input.dev_attr.attr,
	&sensor_dev_attr_fan2_min.dev_attr.attr,
	&sensor_dev_attr_fan2_div.dev_attr.attr,
	&sensor_dev_attr_fan3_input.dev_attr.attr,
	&sensor_dev_attr_fan3_min.dev_attr.attr,
	&sensor_dev_attr_fan3_div.dev_attr.attr,

	&sensor_dev_attr_fan1_alarm.dev_attr.attr,
	&sensor_dev_attr_fan2_alarm.dev_attr.attr,
	&sensor_dev_attr_fan3_alarm.dev_attr.attr,
	&sensor_dev_attr_fan4_alarm.dev_attr.attr,
	&sensor_dev_attr_fan5_alarm.dev_attr.attr,

	&sensor_dev_attr_pwm1_enable.dev_attr.attr,
	&sensor_dev_attr_pwm2_enable.dev_attr.attr,
	&sensor_dev_attr_pwm3_enable.dev_attr.attr,
	&sensor_dev_attr_pwm1.dev_attr.attr,
	&sensor_dev_attr_pwm2.dev_attr.attr,
	&sensor_dev_attr_pwm3.dev_attr.attr,
	&dev_attr_pwm1_freq.attr,
	&dev_attr_pwm2_freq.attr,
	&dev_attr_pwm3_freq.attr,

	&dev_attr_vrm.attr,
	&dev_attr_cpu0_vid.attr,
	NULL
};

static const struct attribute_group it87_group_opt = {
	.attrs = it87_attributes_opt,
};

/* SuperIO detection - will change isa_address if a chip is found */
static int __init it87_find(unsigned short *address,
	struct it87_sio_data *sio_data)
{
	int err = -ENODEV;
	u16 chip_type;

	superio_enter();
	chip_type = force_id ? force_id : superio_inw(DEVID);

	switch (chip_type) {
	case IT8705F_DEVID:
		sio_data->type = it87;
		break;
	case IT8712F_DEVID:
		sio_data->type = it8712;
		break;
	case IT8716F_DEVID:
	case IT8726F_DEVID:
		sio_data->type = it8716;
		break;
	case IT8718F_DEVID:
		sio_data->type = it8718;
		break;

	case IT8720F_DEVID:
		sio_data->type = it8720;
		break;

	case IT8781F_DEVID:
		sio_data->type = it8781;
		break;

	case IT8782F_DEVID:
		sio_data->type = it8782;
		break;

	case 0xffff:	/* No device at all */
		goto exit;
	default:
		pr_debug(DRVNAME ": Unsupported chip (DEVID=0x%x)\n",
			 chip_type);
		goto exit;
	}

	superio_select(PME);
	if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
		pr_info("it87: Device not activated, skipping\n");
		goto exit;
	}

	*address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
	if (*address == 0) {
		pr_info("it87: Base address not set, skipping\n");
		goto exit;
	}

	err = 0;
	pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n",
		chip_type, *address, superio_inb(DEVREV) & 0x0f);

	/* Read GPIO config and VID value from LDN 7 (GPIO) */
	if (chip_type != IT8705F_DEVID) {
		int reg;

		superio_select(GPIO);
		if (chip_type == it8718)
			sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);

		reg = superio_inb(IT87_SIO_PINX2_REG);
		if (reg & (1 << 0))
			pr_info("it87: in3 is VCC (+5V)\n");
		if (reg & (1 << 1))
			pr_info("it87: in7 is VCCH (+5V Stand-By)\n");
	}

exit:
	superio_exit();
	return err;
}

static int __devinit it87_probe(struct platform_device *pdev)
{
	struct it87_data *data;
	struct resource *res;
	struct device *dev = &pdev->dev;
	struct it87_sio_data *sio_data = dev->platform_data;
	int err = 0;
	int enable_pwm_interface;
	static const char *names[] = {
		"it87",
		"it8712",
		"it8716",
		"it8718",
	};

	res = platform_get_resource(pdev, IORESOURCE_IO, 0);
	if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) {
		dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
			(unsigned long)res->start,
			(unsigned long)(res->start + IT87_EC_EXTENT - 1));
		err = -EBUSY;
		goto ERROR0;
	}

	if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) {
		err = -ENOMEM;
		goto ERROR1;
	}

	data->addr = res->start;
	data->type = sio_data->type;
	data->name = names[sio_data->type];

	/* Now, we do the remaining detection. */
	if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
	 || it87_read_value(data, IT87_REG_CHIPID) != 0x90) {
		err = -ENODEV;
		goto ERROR2;
	}

	platform_set_drvdata(pdev, data);

	mutex_init(&data->update_lock);

	/* Check PWM configuration */
	enable_pwm_interface = it87_check_pwm(dev);

	/* Initialize the IT87 chip */
	it87_init_device(pdev);

	/* Register sysfs hooks */
	if ((err = sysfs_create_group(&dev->kobj, &it87_group)))
		goto ERROR2;

	/* Do not create fan files for disabled fans */
	if (data->type == it8716 || data->type == it8718) {
		/* 16-bit tachometers */
		if (data->has_fan & (1 << 0)) {
			if ((err = device_create_file(dev,
			     &sensor_dev_attr_fan1_input16.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan1_min16.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan1_alarm.dev_attr)))
				goto ERROR4;
		}
		if (data->has_fan & (1 << 1)) {
			if ((err = device_create_file(dev,
			     &sensor_dev_attr_fan2_input16.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan2_min16.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan2_alarm.dev_attr)))
				goto ERROR4;
		}
		if (data->has_fan & (1 << 2)) {
			if ((err = device_create_file(dev,
			     &sensor_dev_attr_fan3_input16.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan3_min16.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan3_alarm.dev_attr)))
				goto ERROR4;
		}
		if (data->has_fan & (1 << 3)) {
			if ((err = device_create_file(dev,
			     &sensor_dev_attr_fan4_input16.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan4_min16.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan4_alarm.dev_attr)))
				goto ERROR4;
		}
		if (data->has_fan & (1 << 4)) {
			if ((err = device_create_file(dev,
			     &sensor_dev_attr_fan5_input16.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan5_min16.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan5_alarm.dev_attr)))
				goto ERROR4;
		}
	} else {
		/* 8-bit tachometers with clock divider */
		if (data->has_fan & (1 << 0)) {
			if ((err = device_create_file(dev,
			     &sensor_dev_attr_fan1_input.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan1_min.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan1_div.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan1_alarm.dev_attr)))
				goto ERROR4;
		}
		if (data->has_fan & (1 << 1)) {
			if ((err = device_create_file(dev,
			     &sensor_dev_attr_fan2_input.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan2_min.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan2_div.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan2_alarm.dev_attr)))
				goto ERROR4;
		}
		if (data->has_fan & (1 << 2)) {
			if ((err = device_create_file(dev,
			     &sensor_dev_attr_fan3_input.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan3_min.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan3_div.dev_attr))
			 || (err = device_create_file(dev,
			     &sensor_dev_attr_fan3_alarm.dev_attr)))
				goto ERROR4;
		}
	}

	if (enable_pwm_interface) {
		if ((err = device_create_file(dev,
		     &sensor_dev_attr_pwm1_enable.dev_attr))
		 || (err = device_create_file(dev,
		     &sensor_dev_attr_pwm2_enable.dev_attr))
		 || (err = device_create_file(dev,
		     &sensor_dev_attr_pwm3_enable.dev_attr))
		 || (err = device_create_file(dev,
		     &sensor_dev_attr_pwm1.dev_attr))
		 || (err = device_create_file(dev,
		     &sensor_dev_attr_pwm2.dev_attr))
		 || (err = device_create_file(dev,
		     &sensor_dev_attr_pwm3.dev_attr))
		 || (err = device_create_file(dev,
		     &dev_attr_pwm1_freq))
		 || (err = device_create_file(dev,