aboutsummaryrefslogtreecommitdiff
path: root/drivers/hwmon
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/lm87.c351
1 files changed, 165 insertions, 186 deletions
diff --git a/drivers/hwmon/lm87.c b/drivers/hwmon/lm87.c
index e35f9af03b6..a71c7492fc4 100644
--- a/drivers/hwmon/lm87.c
+++ b/drivers/hwmon/lm87.c
@@ -150,41 +150,6 @@ static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C };
#define CHAN_NO_VID (1 << 7)
/*
- * Functions declaration
- */
-
-static int lm87_probe(struct i2c_client *client,
- const struct i2c_device_id *id);
-static int lm87_detect(struct i2c_client *new_client,
- struct i2c_board_info *info);
-static void lm87_init_client(struct i2c_client *client);
-static int lm87_remove(struct i2c_client *client);
-static struct lm87_data *lm87_update_device(struct device *dev);
-
-/*
- * Driver data (common to all clients)
- */
-
-static const struct i2c_device_id lm87_id[] = {
- { "lm87", lm87 },
- { "adm1024", adm1024 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, lm87_id);
-
-static struct i2c_driver lm87_driver = {
- .class = I2C_CLASS_HWMON,
- .driver = {
- .name = "lm87",
- },
- .probe = lm87_probe,
- .remove = lm87_remove,
- .id_table = lm87_id,
- .detect = lm87_detect,
- .address_list = normal_i2c,
-};
-
-/*
* Client data (each client gets its own)
*/
@@ -218,10 +183,6 @@ struct lm87_data {
u8 vrm;
};
-/*
- * Sysfs stuff
- */
-
static inline int lm87_read_value(struct i2c_client *client, u8 reg)
{
return i2c_smbus_read_byte_data(client, reg);
@@ -232,6 +193,89 @@ static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value)
return i2c_smbus_write_byte_data(client, reg, value);
}
+static struct lm87_data *lm87_update_device(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm87_data *data = i2c_get_clientdata(client);
+
+ mutex_lock(&data->update_lock);
+
+ if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
+ int i, j;
+
+ dev_dbg(&client->dev, "Updating data.\n");
+
+ i = (data->channel & CHAN_TEMP3) ? 1 : 0;
+ j = (data->channel & CHAN_TEMP3) ? 5 : 6;
+ for (; i < j; i++) {
+ data->in[i] = lm87_read_value(client,
+ LM87_REG_IN(i));
+ data->in_min[i] = lm87_read_value(client,
+ LM87_REG_IN_MIN(i));
+ data->in_max[i] = lm87_read_value(client,
+ LM87_REG_IN_MAX(i));
+ }
+
+ for (i = 0; i < 2; i++) {
+ if (data->channel & CHAN_NO_FAN(i)) {
+ data->in[6+i] = lm87_read_value(client,
+ LM87_REG_AIN(i));
+ data->in_max[6+i] = lm87_read_value(client,
+ LM87_REG_AIN_MAX(i));
+ data->in_min[6+i] = lm87_read_value(client,
+ LM87_REG_AIN_MIN(i));
+
+ } else {
+ data->fan[i] = lm87_read_value(client,
+ LM87_REG_FAN(i));
+ data->fan_min[i] = lm87_read_value(client,
+ LM87_REG_FAN_MIN(i));
+ }
+ }
+
+ j = (data->channel & CHAN_TEMP3) ? 3 : 2;
+ for (i = 0 ; i < j; i++) {
+ data->temp[i] = lm87_read_value(client,
+ LM87_REG_TEMP[i]);
+ data->temp_high[i] = lm87_read_value(client,
+ LM87_REG_TEMP_HIGH[i]);
+ data->temp_low[i] = lm87_read_value(client,
+ LM87_REG_TEMP_LOW[i]);
+ }
+
+ i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK);
+ j = lm87_read_value(client, LM87_REG_TEMP_HW_INT);
+ data->temp_crit_int = min(i, j);
+
+ i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK);
+ j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT);
+ data->temp_crit_ext = min(i, j);
+
+ i = lm87_read_value(client, LM87_REG_VID_FAN_DIV);
+ data->fan_div[0] = (i >> 4) & 0x03;
+ data->fan_div[1] = (i >> 6) & 0x03;
+ data->vid = (i & 0x0F)
+ | (lm87_read_value(client, LM87_REG_VID4) & 0x01)
+ << 4;
+
+ data->alarms = lm87_read_value(client, LM87_REG_ALARMS1)
+ | (lm87_read_value(client, LM87_REG_ALARMS2)
+ << 8);
+ data->aout = lm87_read_value(client, LM87_REG_AOUT);
+
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ mutex_unlock(&data->update_lock);
+
+ return data;
+}
+
+/*
+ * Sysfs stuff
+ */
+
#define show_in(offset) \
static ssize_t show_in##offset##_input(struct device *dev, \
struct device_attribute *attr, \
@@ -789,22 +833,21 @@ static const struct attribute_group lm87_group_vid = {
};
/* Return 0 if detection is successful, -ENODEV otherwise */
-static int lm87_detect(struct i2c_client *new_client,
- struct i2c_board_info *info)
+static int lm87_detect(struct i2c_client *client, struct i2c_board_info *info)
{
- struct i2c_adapter *adapter = new_client->adapter;
+ struct i2c_adapter *adapter = client->adapter;
const char *name;
u8 cid, rev;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
- if (lm87_read_value(new_client, LM87_REG_CONFIG) & 0x80)
+ if (lm87_read_value(client, LM87_REG_CONFIG) & 0x80)
return -ENODEV;
/* Now, we do the remaining detection. */
- cid = lm87_read_value(new_client, LM87_REG_COMPANY_ID);
- rev = lm87_read_value(new_client, LM87_REG_REVISION);
+ cid = lm87_read_value(client, LM87_REG_COMPANY_ID);
+ rev = lm87_read_value(client, LM87_REG_REVISION);
if (cid == 0x02 /* National Semiconductor */
&& (rev >= 0x01 && rev <= 0x08))
@@ -814,7 +857,7 @@ static int lm87_detect(struct i2c_client *new_client,
name = "adm1024";
else {
dev_dbg(&adapter->dev, "LM87 detection failed at 0x%02x\n",
- new_client->addr);
+ client->addr);
return -ENODEV;
}
@@ -837,8 +880,49 @@ static void lm87_remove_files(struct i2c_client *client)
sysfs_remove_group(&dev->kobj, &lm87_group_vid);
}
-static int lm87_probe(struct i2c_client *new_client,
- const struct i2c_device_id *id)
+static void lm87_init_client(struct i2c_client *client)
+{
+ struct lm87_data *data = i2c_get_clientdata(client);
+
+ if (client->dev.platform_data) {
+ data->channel = *(u8 *)client->dev.platform_data;
+ lm87_write_value(client,
+ LM87_REG_CHANNEL_MODE, data->channel);
+ } else {
+ data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE);
+ }
+ data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F;
+
+ if (!(data->config & 0x01)) {
+ int i;
+
+ /* Limits are left uninitialized after power-up */
+ for (i = 1; i < 6; i++) {
+ lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00);
+ lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF);
+ }
+ for (i = 0; i < 2; i++) {
+ lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F);
+ lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00);
+ lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00);
+ lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF);
+ }
+ if (data->channel & CHAN_TEMP3) {
+ lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F);
+ lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00);
+ } else {
+ lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00);
+ lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF);
+ }
+ }
+
+ /* Make sure Start is set and INT#_Clear is clear */
+ if ((data->config & 0x09) != 0x01)
+ lm87_write_value(client, LM87_REG_CONFIG,
+ (data->config & 0x77) | 0x01);
+}
+
+static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
struct lm87_data *data;
int err;
@@ -849,12 +933,12 @@ static int lm87_probe(struct i2c_client *new_client,
goto exit;
}
- i2c_set_clientdata(new_client, data);
+ i2c_set_clientdata(client, data);
data->valid = 0;
mutex_init(&data->update_lock);
/* Initialize the LM87 chip */
- lm87_init_client(new_client);
+ lm87_init_client(client);
data->in_scale[0] = 2500;
data->in_scale[1] = 2700;
@@ -866,55 +950,48 @@ static int lm87_probe(struct i2c_client *new_client,
data->in_scale[7] = 1875;
/* Register sysfs hooks */
- err = sysfs_create_group(&new_client->dev.kobj, &lm87_group);
+ err = sysfs_create_group(&client->dev.kobj, &lm87_group);
if (err)
goto exit_free;
if (data->channel & CHAN_NO_FAN(0)) {
- err = sysfs_create_group(&new_client->dev.kobj,
- &lm87_group_in6);
+ err = sysfs_create_group(&client->dev.kobj, &lm87_group_in6);
if (err)
goto exit_remove;
} else {
- err = sysfs_create_group(&new_client->dev.kobj,
- &lm87_group_fan1);
+ err = sysfs_create_group(&client->dev.kobj, &lm87_group_fan1);
if (err)
goto exit_remove;
}
if (data->channel & CHAN_NO_FAN(1)) {
- err = sysfs_create_group(&new_client->dev.kobj,
- &lm87_group_in7);
+ err = sysfs_create_group(&client->dev.kobj, &lm87_group_in7);
if (err)
goto exit_remove;
} else {
- err = sysfs_create_group(&new_client->dev.kobj,
- &lm87_group_fan2);
+ err = sysfs_create_group(&client->dev.kobj, &lm87_group_fan2);
if (err)
goto exit_remove;
}
if (data->channel & CHAN_TEMP3) {
- err = sysfs_create_group(&new_client->dev.kobj,
- &lm87_group_temp3);
+ err = sysfs_create_group(&client->dev.kobj, &lm87_group_temp3);
if (err)
goto exit_remove;
} else {
- err = sysfs_create_group(&new_client->dev.kobj,
- &lm87_group_in0_5);
+ err = sysfs_create_group(&client->dev.kobj, &lm87_group_in0_5);
if (err)
goto exit_remove;
}
if (!(data->channel & CHAN_NO_VID)) {
data->vrm = vid_which_vrm();
- err = sysfs_create_group(&new_client->dev.kobj,
- &lm87_group_vid);
+ err = sysfs_create_group(&client->dev.kobj, &lm87_group_vid);
if (err)
goto exit_remove;
}
- data->hwmon_dev = hwmon_device_register(&new_client->dev);
+ data->hwmon_dev = hwmon_device_register(&client->dev);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
goto exit_remove;
@@ -923,56 +1000,14 @@ static int lm87_probe(struct i2c_client *new_client,
return 0;
exit_remove:
- lm87_remove_files(new_client);
+ lm87_remove_files(client);
exit_free:
- lm87_write_value(new_client, LM87_REG_CONFIG, data->config);
+ lm87_write_value(client, LM87_REG_CONFIG, data->config);
kfree(data);
exit:
return err;
}
-static void lm87_init_client(struct i2c_client *client)
-{
- struct lm87_data *data = i2c_get_clientdata(client);
-
- if (client->dev.platform_data) {
- data->channel = *(u8 *)client->dev.platform_data;
- lm87_write_value(client,
- LM87_REG_CHANNEL_MODE, data->channel);
- } else {
- data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE);
- }
- data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F;
-
- if (!(data->config & 0x01)) {
- int i;
-
- /* Limits are left uninitialized after power-up */
- for (i = 1; i < 6; i++) {
- lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00);
- lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF);
- }
- for (i = 0; i < 2; i++) {
- lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F);
- lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00);
- lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00);
- lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF);
- }
- if (data->channel & CHAN_TEMP3) {
- lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F);
- lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00);
- } else {
- lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00);
- lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF);
- }
- }
-
- /* Make sure Start is set and INT#_Clear is clear */
- if ((data->config & 0x09) != 0x01)
- lm87_write_value(client, LM87_REG_CONFIG,
- (data->config & 0x77) | 0x01);
-}
-
static int lm87_remove(struct i2c_client *client)
{
struct lm87_data *data = i2c_get_clientdata(client);
@@ -985,84 +1020,28 @@ static int lm87_remove(struct i2c_client *client)
return 0;
}
-static struct lm87_data *lm87_update_device(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm87_data *data = i2c_get_clientdata(client);
-
- mutex_lock(&data->update_lock);
-
- if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
- int i, j;
-
- dev_dbg(&client->dev, "Updating data.\n");
-
- i = (data->channel & CHAN_TEMP3) ? 1 : 0;
- j = (data->channel & CHAN_TEMP3) ? 5 : 6;
- for (; i < j; i++) {
- data->in[i] = lm87_read_value(client,
- LM87_REG_IN(i));
- data->in_min[i] = lm87_read_value(client,
- LM87_REG_IN_MIN(i));
- data->in_max[i] = lm87_read_value(client,
- LM87_REG_IN_MAX(i));
- }
-
- for (i = 0; i < 2; i++) {
- if (data->channel & CHAN_NO_FAN(i)) {
- data->in[6+i] = lm87_read_value(client,
- LM87_REG_AIN(i));
- data->in_max[6+i] = lm87_read_value(client,
- LM87_REG_AIN_MAX(i));
- data->in_min[6+i] = lm87_read_value(client,
- LM87_REG_AIN_MIN(i));
-
- } else {
- data->fan[i] = lm87_read_value(client,
- LM87_REG_FAN(i));
- data->fan_min[i] = lm87_read_value(client,
- LM87_REG_FAN_MIN(i));
- }
- }
-
- j = (data->channel & CHAN_TEMP3) ? 3 : 2;
- for (i = 0 ; i < j; i++) {
- data->temp[i] = lm87_read_value(client,
- LM87_REG_TEMP[i]);
- data->temp_high[i] = lm87_read_value(client,
- LM87_REG_TEMP_HIGH[i]);
- data->temp_low[i] = lm87_read_value(client,
- LM87_REG_TEMP_LOW[i]);
- }
-
- i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK);
- j = lm87_read_value(client, LM87_REG_TEMP_HW_INT);
- data->temp_crit_int = min(i, j);
-
- i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK);
- j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT);
- data->temp_crit_ext = min(i, j);
-
- i = lm87_read_value(client, LM87_REG_VID_FAN_DIV);
- data->fan_div[0] = (i >> 4) & 0x03;
- data->fan_div[1] = (i >> 6) & 0x03;
- data->vid = (i & 0x0F)
- | (lm87_read_value(client, LM87_REG_VID4) & 0x01)
- << 4;
-
- data->alarms = lm87_read_value(client, LM87_REG_ALARMS1)
- | (lm87_read_value(client, LM87_REG_ALARMS2)
- << 8);
- data->aout = lm87_read_value(client, LM87_REG_AOUT);
-
- data->last_updated = jiffies;
- data->valid = 1;
- }
+/*
+ * Driver data (common to all clients)
+ */
- mutex_unlock(&data->update_lock);
+static const struct i2c_device_id lm87_id[] = {
+ { "lm87", lm87 },
+ { "adm1024", adm1024 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, lm87_id);
- return data;
-}
+static struct i2c_driver lm87_driver = {
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = "lm87",
+ },
+ .probe = lm87_probe,
+ .remove = lm87_remove,
+ .id_table = lm87_id,
+ .detect = lm87_detect,
+ .address_list = normal_i2c,
+};
module_i2c_driver(lm87_driver);
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-26 15:58:53 +0000