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path: root/drivers/hwmon/adt7475.c
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Diffstat (limited to 'drivers/hwmon/adt7475.c')
-rw-r--r--drivers/hwmon/adt7475.c114
1 files changed, 99 insertions, 15 deletions
diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c
index 716dae9ff0f7..d20130723d68 100644
--- a/drivers/hwmon/adt7475.c
+++ b/drivers/hwmon/adt7475.c
@@ -80,6 +80,8 @@
#define REG_EXTEND1 0x76
#define REG_EXTEND2 0x77
+
+#define REG_CONFIG3 0x78
#define REG_CONFIG5 0x7C
#define REG_CONFIG4 0x7D
@@ -88,6 +90,10 @@
#define REG_VTT_MIN 0x84 /* ADT7490 only */
#define REG_VTT_MAX 0x86 /* ADT7490 only */
+#define CONFIG3_SMBALERT 0x01
+#define CONFIG3_THERM 0x02
+
+#define CONFIG4_PINFUNC 0x03
#define CONFIG4_MAXDUTY 0x08
#define CONFIG5_TWOSCOMP 0x01
@@ -149,6 +155,8 @@ struct adt7475_data {
u8 config4;
u8 config5;
u8 has_voltage;
+ u8 has_pwm2:1;
+ u8 has_fan4:1;
u32 alarms;
u16 voltage[3][6];
u16 temp[7][3];
@@ -1025,21 +1033,12 @@ static struct attribute *adt7475_attrs[] = {
&sensor_dev_attr_fan3_input.dev_attr.attr,
&sensor_dev_attr_fan3_min.dev_attr.attr,
&sensor_dev_attr_fan3_alarm.dev_attr.attr,
- &sensor_dev_attr_fan4_input.dev_attr.attr,
- &sensor_dev_attr_fan4_min.dev_attr.attr,
- &sensor_dev_attr_fan4_alarm.dev_attr.attr,
&sensor_dev_attr_pwm1.dev_attr.attr,
&sensor_dev_attr_pwm1_freq.dev_attr.attr,
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
- &sensor_dev_attr_pwm2.dev_attr.attr,
- &sensor_dev_attr_pwm2_freq.dev_attr.attr,
- &sensor_dev_attr_pwm2_enable.dev_attr.attr,
- &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
- &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
- &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
&sensor_dev_attr_pwm3.dev_attr.attr,
&sensor_dev_attr_pwm3_freq.dev_attr.attr,
&sensor_dev_attr_pwm3_enable.dev_attr.attr,
@@ -1050,12 +1049,33 @@ static struct attribute *adt7475_attrs[] = {
NULL,
};
+static struct attribute *fan4_attrs[] = {
+ &sensor_dev_attr_fan4_input.dev_attr.attr,
+ &sensor_dev_attr_fan4_min.dev_attr.attr,
+ &sensor_dev_attr_fan4_alarm.dev_attr.attr,
+ NULL
+};
+
+static struct attribute *pwm2_attrs[] = {
+ &sensor_dev_attr_pwm2.dev_attr.attr,
+ &sensor_dev_attr_pwm2_freq.dev_attr.attr,
+ &sensor_dev_attr_pwm2_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
+ NULL
+};
+
/* Attributes specific to the ADT7490 */
-static struct attribute *adt7490_attrs[] = {
+static struct attribute *in0_attrs[] = {
&sensor_dev_attr_in0_input.dev_attr.attr,
&sensor_dev_attr_in0_max.dev_attr.attr,
&sensor_dev_attr_in0_min.dev_attr.attr,
&sensor_dev_attr_in0_alarm.dev_attr.attr,
+ NULL
+};
+
+static struct attribute *adt7490_attrs[] = {
&sensor_dev_attr_in3_input.dev_attr.attr,
&sensor_dev_attr_in3_max.dev_attr.attr,
&sensor_dev_attr_in3_min.dev_attr.attr,
@@ -1072,6 +1092,9 @@ static struct attribute *adt7490_attrs[] = {
};
static struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
+static struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
+static struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
+static struct attribute_group in0_attr_group = { .attrs = in0_attrs };
static struct attribute_group adt7490_attr_group = { .attrs = adt7490_attrs };
static int adt7475_detect(struct i2c_client *client, int kind,
@@ -1115,13 +1138,20 @@ static void adt7475_remove_files(struct i2c_client *client,
sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
if (data->has_voltage & 0x39)
sysfs_remove_group(&client->dev.kobj, &adt7490_attr_group);
+ if (data->has_fan4)
+ sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
+ if (data->has_pwm2)
+ sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
+ if (data->has_voltage & (1 << 0))
+ sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
}
static int adt7475_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct adt7475_data *data;
- int i, ret = 0;
+ int i, ret = 0, revision;
+ u8 config3;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (data == NULL)
@@ -1133,10 +1163,36 @@ static int adt7475_probe(struct i2c_client *client,
/* Initialize device-specific values */
switch (id->driver_data) {
case adt7490:
- data->has_voltage = 0x3f; /* in0 to in5 */
+ data->has_voltage = 0x3e; /* in1 to in5 */
+ revision = adt7475_read(REG_DEVID2) & 0x03;
break;
default:
data->has_voltage = 0x06; /* in1, in2 */
+ revision = adt7475_read(REG_DEVID2) & 0x07;
+ }
+
+ config3 = adt7475_read(REG_CONFIG3);
+ /* Pin PWM2 may alternatively be used for ALERT output */
+ if (!(config3 & CONFIG3_SMBALERT))
+ data->has_pwm2 = 1;
+ /* Meaning of this bit is inverted for the ADT7473-1 */
+ if (id->driver_data == adt7473 && revision >= 1)
+ data->has_pwm2 = !data->has_pwm2;
+
+ data->config4 = adt7475_read(REG_CONFIG4);
+ /* Pin TACH4 may alternatively be used for THERM */
+ if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
+ data->has_fan4 = 1;
+
+ /* THERM configuration is more complex on the ADT7490, because 2
+ different pins (TACH4 and +2.5 Vin) can be used for this function */
+ if (id->driver_data == adt7490) {
+ if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
+ !(config3 & CONFIG3_THERM))
+ data->has_fan4 = 1;
+ if (!(config3 & CONFIG3_THERM) ||
+ (data->config4 & CONFIG4_PINFUNC) == 0x1)
+ data->has_voltage |= (1 << 0); /* in0 */
}
/* Call adt7475_read_pwm for all pwm's as this will reprogram any
@@ -1155,6 +1211,23 @@ static int adt7475_probe(struct i2c_client *client,
goto eremove;
}
+ /* Features that can be disabled individually */
+ if (data->has_fan4) {
+ ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
+ if (ret)
+ goto eremove;
+ }
+ if (data->has_pwm2) {
+ ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
+ if (ret)
+ goto eremove;
+ }
+ if (data->has_voltage & (1 << 0)) {
+ ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
+ if (ret)
+ goto eremove;
+ }
+
data->hwmon_dev = hwmon_device_register(&client->dev);
if (IS_ERR(data->hwmon_dev)) {
ret = PTR_ERR(data->hwmon_dev);
@@ -1293,13 +1366,19 @@ static struct adt7475_data *adt7475_update_device(struct device *dev)
((ext >> 4) & 3);
}
- for (i = 0; i < ADT7475_TACH_COUNT; i++)
+ for (i = 0; i < ADT7475_TACH_COUNT; i++) {
+ if (i == 3 && !data->has_fan4)
+ continue;
data->tach[INPUT][i] =
adt7475_read_word(client, TACH_REG(i));
+ }
/* Updated by hw when in auto mode */
- for (i = 0; i < ADT7475_PWM_COUNT; i++)
+ for (i = 0; i < ADT7475_PWM_COUNT; i++) {
+ if (i == 1 && !data->has_pwm2)
+ continue;
data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
+ }
data->measure_updated = jiffies;
}
@@ -1340,11 +1419,16 @@ static struct adt7475_data *adt7475_update_device(struct device *dev)
}
adt7475_read_hystersis(client);
- for (i = 0; i < ADT7475_TACH_COUNT; i++)
+ for (i = 0; i < ADT7475_TACH_COUNT; i++) {
+ if (i == 3 && !data->has_fan4)
+ continue;
data->tach[MIN][i] =
adt7475_read_word(client, TACH_MIN_REG(i));
+ }
for (i = 0; i < ADT7475_PWM_COUNT; i++) {
+ if (i == 1 && !data->has_pwm2)
+ continue;
data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
/* Set the channel and control information */
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