dme1737.c

linux 内核源代码

			char *buf)
{
	struct dme1737_data *data = dme1737_update_device(dev);

	return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
}

static ssize_t show_name(struct device *dev, struct device_attribute *attr,
			 char *buf)
{
	struct dme1737_data *data = dev_get_drvdata(dev);

	return sprintf(buf, "%s\n", data->client.name);
}

/* ---------------------------------------------------------------------
 * Sysfs device attribute defines and structs
 * --------------------------------------------------------------------- */

/* Voltages 0-6 */

#define SENSOR_DEVICE_ATTR_IN(ix) \
static SENSOR_DEVICE_ATTR_2(in##ix##_input, S_IRUGO, \
	show_in, NULL, SYS_IN_INPUT, ix); \
static SENSOR_DEVICE_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \
	show_in, set_in, SYS_IN_MIN, ix); \
static SENSOR_DEVICE_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \
	show_in, set_in, SYS_IN_MAX, ix); \
static SENSOR_DEVICE_ATTR_2(in##ix##_alarm, S_IRUGO, \
	show_in, NULL, SYS_IN_ALARM, ix)

SENSOR_DEVICE_ATTR_IN(0);
SENSOR_DEVICE_ATTR_IN(1);
SENSOR_DEVICE_ATTR_IN(2);
SENSOR_DEVICE_ATTR_IN(3);
SENSOR_DEVICE_ATTR_IN(4);
SENSOR_DEVICE_ATTR_IN(5);
SENSOR_DEVICE_ATTR_IN(6);

/* Temperatures 1-3 */

#define SENSOR_DEVICE_ATTR_TEMP(ix) \
static SENSOR_DEVICE_ATTR_2(temp##ix##_input, S_IRUGO, \
	show_temp, NULL, SYS_TEMP_INPUT, ix-1); \
static SENSOR_DEVICE_ATTR_2(temp##ix##_min, S_IRUGO | S_IWUSR, \
	show_temp, set_temp, SYS_TEMP_MIN, ix-1); \
static SENSOR_DEVICE_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \
	show_temp, set_temp, SYS_TEMP_MAX, ix-1); \
static SENSOR_DEVICE_ATTR_2(temp##ix##_offset, S_IRUGO, \
	show_temp, set_temp, SYS_TEMP_OFFSET, ix-1); \
static SENSOR_DEVICE_ATTR_2(temp##ix##_alarm, S_IRUGO, \
	show_temp, NULL, SYS_TEMP_ALARM, ix-1); \
static SENSOR_DEVICE_ATTR_2(temp##ix##_fault, S_IRUGO, \
	show_temp, NULL, SYS_TEMP_FAULT, ix-1)

SENSOR_DEVICE_ATTR_TEMP(1);
SENSOR_DEVICE_ATTR_TEMP(2);
SENSOR_DEVICE_ATTR_TEMP(3);

/* Zones 1-3 */

#define SENSOR_DEVICE_ATTR_ZONE(ix) \
static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_channels_temp, S_IRUGO, \
	show_zone, NULL, SYS_ZONE_AUTO_CHANNELS_TEMP, ix-1); \
static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp_hyst, S_IRUGO, \
	show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP_HYST, ix-1); \
static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp, S_IRUGO, \
	show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP, ix-1); \
static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point2_temp, S_IRUGO, \
	show_zone, set_zone, SYS_ZONE_AUTO_POINT2_TEMP, ix-1); \
static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point3_temp, S_IRUGO, \
	show_zone, set_zone, SYS_ZONE_AUTO_POINT3_TEMP, ix-1)

SENSOR_DEVICE_ATTR_ZONE(1);
SENSOR_DEVICE_ATTR_ZONE(2);
SENSOR_DEVICE_ATTR_ZONE(3);

/* Fans 1-4 */

#define SENSOR_DEVICE_ATTR_FAN_1TO4(ix) \
static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
	show_fan, NULL, SYS_FAN_INPUT, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
	show_fan, set_fan, SYS_FAN_MIN, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
	show_fan, NULL, SYS_FAN_ALARM, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_type, S_IRUGO | S_IWUSR, \
	show_fan, set_fan, SYS_FAN_TYPE, ix-1)

SENSOR_DEVICE_ATTR_FAN_1TO4(1);
SENSOR_DEVICE_ATTR_FAN_1TO4(2);
SENSOR_DEVICE_ATTR_FAN_1TO4(3);
SENSOR_DEVICE_ATTR_FAN_1TO4(4);

/* Fans 5-6 */

#define SENSOR_DEVICE_ATTR_FAN_5TO6(ix) \
static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
	show_fan, NULL, SYS_FAN_INPUT, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
	show_fan, set_fan, SYS_FAN_MIN, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
	show_fan, NULL, SYS_FAN_ALARM, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_max, S_IRUGO | S_IWUSR, \
	show_fan, set_fan, SYS_FAN_MAX, ix-1)

SENSOR_DEVICE_ATTR_FAN_5TO6(5);
SENSOR_DEVICE_ATTR_FAN_5TO6(6);

/* PWMs 1-3 */

#define SENSOR_DEVICE_ATTR_PWM_1TO3(ix) \
static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
	show_pwm, set_pwm, SYS_PWM, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
	show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
	show_pwm, set_pwm, SYS_PWM_ENABLE, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_ramp_rate, S_IRUGO, \
	show_pwm, set_pwm, SYS_PWM_RAMP_RATE, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_channels_zone, S_IRUGO, \
	show_pwm, set_pwm, SYS_PWM_AUTO_CHANNELS_ZONE, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_pwm_min, S_IRUGO, \
	show_pwm, set_pwm, SYS_PWM_AUTO_PWM_MIN, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point1_pwm, S_IRUGO, \
	show_pwm, set_pwm, SYS_PWM_AUTO_POINT1_PWM, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point2_pwm, S_IRUGO, \
	show_pwm, NULL, SYS_PWM_AUTO_POINT2_PWM, ix-1)

SENSOR_DEVICE_ATTR_PWM_1TO3(1);
SENSOR_DEVICE_ATTR_PWM_1TO3(2);
SENSOR_DEVICE_ATTR_PWM_1TO3(3);

/* PWMs 5-6 */

#define SENSOR_DEVICE_ATTR_PWM_5TO6(ix) \
static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO | S_IWUSR, \
	show_pwm, set_pwm, SYS_PWM, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO | S_IWUSR, \
	show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
	show_pwm, NULL, SYS_PWM_ENABLE, ix-1)

SENSOR_DEVICE_ATTR_PWM_5TO6(5);
SENSOR_DEVICE_ATTR_PWM_5TO6(6);

/* Misc */

static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);   /* for ISA devices */

#define SENSOR_DEV_ATTR_IN(ix) \
&sensor_dev_attr_in##ix##_input.dev_attr.attr, \
&sensor_dev_attr_in##ix##_min.dev_attr.attr, \
&sensor_dev_attr_in##ix##_max.dev_attr.attr, \
&sensor_dev_attr_in##ix##_alarm.dev_attr.attr

/* These attributes are read-writeable only if the chip is *not* locked */
#define SENSOR_DEV_ATTR_TEMP_LOCK(ix) \
&sensor_dev_attr_temp##ix##_offset.dev_attr.attr

#define SENSOR_DEV_ATTR_TEMP(ix) \
SENSOR_DEV_ATTR_TEMP_LOCK(ix), \
&sensor_dev_attr_temp##ix##_input.dev_attr.attr, \
&sensor_dev_attr_temp##ix##_min.dev_attr.attr, \
&sensor_dev_attr_temp##ix##_max.dev_attr.attr, \
&sensor_dev_attr_temp##ix##_alarm.dev_attr.attr, \
&sensor_dev_attr_temp##ix##_fault.dev_attr.attr

/* These attributes are read-writeable only if the chip is *not* locked */
#define SENSOR_DEV_ATTR_ZONE_LOCK(ix) \
&sensor_dev_attr_zone##ix##_auto_point1_temp_hyst.dev_attr.attr, \
&sensor_dev_attr_zone##ix##_auto_point1_temp.dev_attr.attr, \
&sensor_dev_attr_zone##ix##_auto_point2_temp.dev_attr.attr, \
&sensor_dev_attr_zone##ix##_auto_point3_temp.dev_attr.attr

#define SENSOR_DEV_ATTR_ZONE(ix) \
SENSOR_DEV_ATTR_ZONE_LOCK(ix), \
&sensor_dev_attr_zone##ix##_auto_channels_temp.dev_attr.attr

#define SENSOR_DEV_ATTR_FAN_1TO4(ix) \
&sensor_dev_attr_fan##ix##_input.dev_attr.attr, \
&sensor_dev_attr_fan##ix##_min.dev_attr.attr, \
&sensor_dev_attr_fan##ix##_alarm.dev_attr.attr, \
&sensor_dev_attr_fan##ix##_type.dev_attr.attr

#define SENSOR_DEV_ATTR_FAN_5TO6(ix) \
&sensor_dev_attr_fan##ix##_input.dev_attr.attr, \
&sensor_dev_attr_fan##ix##_min.dev_attr.attr, \
&sensor_dev_attr_fan##ix##_alarm.dev_attr.attr, \
&sensor_dev_attr_fan##ix##_max.dev_attr.attr

/* These attributes are read-writeable only if the chip is *not* locked */
#define SENSOR_DEV_ATTR_PWM_1TO3_LOCK(ix) \
&sensor_dev_attr_pwm##ix##_freq.dev_attr.attr, \
&sensor_dev_attr_pwm##ix##_enable.dev_attr.attr, \
&sensor_dev_attr_pwm##ix##_ramp_rate.dev_attr.attr, \
&sensor_dev_attr_pwm##ix##_auto_channels_zone.dev_attr.attr, \
&sensor_dev_attr_pwm##ix##_auto_pwm_min.dev_attr.attr, \
&sensor_dev_attr_pwm##ix##_auto_point1_pwm.dev_attr.attr

#define SENSOR_DEV_ATTR_PWM_1TO3(ix) \
SENSOR_DEV_ATTR_PWM_1TO3_LOCK(ix), \
&sensor_dev_attr_pwm##ix.dev_attr.attr, \
&sensor_dev_attr_pwm##ix##_auto_point2_pwm.dev_attr.attr

/* These attributes are read-writeable only if the chip is *not* locked */
#define SENSOR_DEV_ATTR_PWM_5TO6_LOCK(ix) \
&sensor_dev_attr_pwm##ix.dev_attr.attr, \
&sensor_dev_attr_pwm##ix##_freq.dev_attr.attr

#define SENSOR_DEV_ATTR_PWM_5TO6(ix) \
SENSOR_DEV_ATTR_PWM_5TO6_LOCK(ix), \
&sensor_dev_attr_pwm##ix##_enable.dev_attr.attr

/* This struct holds all the attributes that are always present and need to be
 * created unconditionally. The attributes that need modification of their
 * permissions are created read-only and write permissions are added or removed
 * on the fly when required */
static struct attribute *dme1737_attr[] ={
	/* Voltages */
	SENSOR_DEV_ATTR_IN(0),
	SENSOR_DEV_ATTR_IN(1),
	SENSOR_DEV_ATTR_IN(2),
	SENSOR_DEV_ATTR_IN(3),
	SENSOR_DEV_ATTR_IN(4),
	SENSOR_DEV_ATTR_IN(5),
	SENSOR_DEV_ATTR_IN(6),
	/* Temperatures */
	SENSOR_DEV_ATTR_TEMP(1),
	SENSOR_DEV_ATTR_TEMP(2),
	SENSOR_DEV_ATTR_TEMP(3),
	/* Zones */
	SENSOR_DEV_ATTR_ZONE(1),
	SENSOR_DEV_ATTR_ZONE(2),
	SENSOR_DEV_ATTR_ZONE(3),
	/* Misc */
	&dev_attr_vrm.attr,
	&dev_attr_cpu0_vid.attr,
	NULL
};

static const struct attribute_group dme1737_group = {
	.attrs = dme1737_attr,
};

/* The following structs hold the PWM attributes, some of which are optional.
 * Their creation depends on the chip configuration which is determined during
 * module load. */
static struct attribute *dme1737_attr_pwm1[] = {
	SENSOR_DEV_ATTR_PWM_1TO3(1),
	NULL
};
static struct attribute *dme1737_attr_pwm2[] = {
	SENSOR_DEV_ATTR_PWM_1TO3(2),
	NULL
};
static struct attribute *dme1737_attr_pwm3[] = {
	SENSOR_DEV_ATTR_PWM_1TO3(3),
	NULL
};
static struct attribute *dme1737_attr_pwm5[] = {
	SENSOR_DEV_ATTR_PWM_5TO6(5),
	NULL
};
static struct attribute *dme1737_attr_pwm6[] = {
	SENSOR_DEV_ATTR_PWM_5TO6(6),
	NULL
};

static const struct attribute_group dme1737_pwm_group[] = {
	{ .attrs = dme1737_attr_pwm1 },
	{ .attrs = dme1737_attr_pwm2 },
	{ .attrs = dme1737_attr_pwm3 },
	{ .attrs = NULL },
	{ .attrs = dme1737_attr_pwm5 },
	{ .attrs = dme1737_attr_pwm6 },
};

/* The following structs hold the fan attributes, some of which are optional.
 * Their creation depends on the chip configuration which is determined during
 * module load. */
static struct attribute *dme1737_attr_fan1[] = {
	SENSOR_DEV_ATTR_FAN_1TO4(1),
	NULL
};
static struct attribute *dme1737_attr_fan2[] = {
	SENSOR_DEV_ATTR_FAN_1TO4(2),
	NULL
};
static struct attribute *dme1737_attr_fan3[] = {
	SENSOR_DEV_ATTR_FAN_1TO4(3),
	NULL
};
static struct attribute *dme1737_attr_fan4[] = {
	SENSOR_DEV_ATTR_FAN_1TO4(4),
	NULL
};
static struct attribute *dme1737_attr_fan5[] = {
	SENSOR_DEV_ATTR_FAN_5TO6(5),
	NULL
};
static struct attribute *dme1737_attr_fan6[] = {
	SENSOR_DEV_ATTR_FAN_5TO6(6),
	NULL
};

static const struct attribute_group dme1737_fan_group[] = {
	{ .attrs = dme1737_attr_fan1 },
	{ .attrs = dme1737_attr_fan2 },
	{ .attrs = dme1737_attr_fan3 },
	{ .attrs = dme1737_attr_fan4 },
	{ .attrs = dme1737_attr_fan5 },
	{ .attrs = dme1737_attr_fan6 },
};

/* The permissions of all of the following attributes are changed to read-
 * writeable if the chip is *not* locked. Otherwise they stay read-only. */
static struct attribute *dme1737_attr_lock[] = {
	/* Temperatures */
	SENSOR_DEV_ATTR_TEMP_LOCK(1),
	SENSOR_DEV_ATTR_TEMP_LOCK(2),
	SENSOR_DEV_ATTR_TEMP_LOCK(3),
	/* Zones */
	SENSOR_DEV_ATTR_ZONE_LOCK(1),
	SENSOR_DEV_ATTR_ZONE_LOCK(2),
	SENSOR_DEV_ATTR_ZONE_LOCK(3),
	NULL
};

static const struct attribute_group dme1737_lock_group = {
	.attrs = dme1737_attr_lock,
};

/* The permissions of the following PWM attributes are changed to read-
 * writeable if the chip is *not* locked and the respective PWM is available.
 * Otherwise they stay read-only. */
static struct attribute *dme1737_attr_pwm1_lock[] = {
	SENSOR_DEV_ATTR_PWM_1TO3_LOCK(1),
	NULL
};
static struct attribute *dme1737_attr_pwm2_lock[] = {
	SENSOR_DEV_ATTR_PWM_1TO3_LOCK(2),
	NULL
};
static struct attribute *dme1737_attr_pwm3_lock[] = {
	SENSOR_DEV_ATTR_PWM_1TO3_LOCK(3),
	NULL
};
static struct attribute *dme1737_attr_pwm5_lock[] = {
	SENSOR_DEV_ATTR_PWM_5TO6_LOCK(5),
	NULL
};
static struct attribute *dme1737_attr_pwm6_lock[] = {
	SENSOR_DEV_ATTR_PWM_5TO6_LOCK(6),
	NULL
};

static const struct attribute_group dme1737_pwm_lock_group[] = {
	{ .attrs = dme1737_attr_pwm1_lock },
	{ .attrs = dme1737_attr_pwm2_lock },
	{ .attrs = dme1737_attr_pwm3_lock },
	{ .attrs = NULL },
	{ .attrs = dme1737_attr_pwm5_lock },
	{ .attrs = dme1737_attr_pwm6_lock },
};

/* Pwm[1-3] are read-writeable if the associated pwm is in manual mode and the
 * chip is not locked. Otherwise they are read-only. */
static struct attribute *dme1737_attr_pwm[] = {
	&sensor_dev_attr_pwm1.dev_attr.attr,
	&sensor_dev_attr_pwm2.dev_attr.attr,
	&sensor_dev_attr_pwm3.dev_attr.attr,
};

/* ---------------------------------------------------------------------
 * Super-IO functions
 * --------------------------------------------------------------------- */

static inline void dme1737_sio_enter(int sio_cip)
{
	outb(0x55, sio_cip);
}

static inline void dme1737_sio_exit(int sio_cip)
{
	outb(0xaa, sio_cip);
}

static inline int dme1737_sio_inb(int sio_cip, int reg)
{
	outb(reg, sio_cip);
	return inb(sio_cip + 1);
}

static inline void dme1737_sio_outb(int sio_cip, int reg, int val)
{
	outb(reg, sio_cip);
	outb(val, sio_cip + 1);
}

/* ---------------------------------------------------------------------
 * Device initialization
 * --------------------------------------------------------------------- */

static int dme1737_i2c_get_features(int, struct dme1737_data*);

static void dme1737_chmod_file(struct device *dev,
			       struct attribute *attr, mode_t mode)
{
	if (sysfs_chmod_file(&dev->kobj, attr, mode)) {
		dev_warn(dev, "Failed to change permissions of %s.\n",
			 attr->name);
	}
}

static void dme1737_chmod_group(struct device *dev,
				const struct attribute_group *group,
				mode_t mode)
{
	struct attribute **attr;

	for (attr = group->attrs; *attr; attr++) {
		dme1737_chmod_file(dev, *attr, mode);
	}
}

static void dme1737_remove_files(struct device *dev)
{
	struct dme1737_data *data = dev_get_drvdata(dev);
	int ix;

	for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
		if (data->has_fan & (1 << ix)) {
			sysfs_remove_group(&dev->kobj,
					   &dme1737_fan_group[ix]);
		}
	}

	for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
		if (data->has_pwm & (1 << ix)) {
			sysfs_remove_group(&dev->kobj,
					   &dme1737_pwm_group[ix]);
		}
	}

	sysfs_remove_group(&dev->kobj, &dme1737_group);

	if (!data->client.driver) {
		sysfs_remove_file(&dev->kobj, &dev_attr_name.attr);
	}