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-rw-r--r--drivers/hwmon/lm80.c290
1 files changed, 139 insertions, 151 deletions
diff --git a/drivers/hwmon/lm80.c b/drivers/hwmon/lm80.c
index 420ad7c5ec28..4bcd9b882948 100644
--- a/drivers/hwmon/lm80.c
+++ b/drivers/hwmon/lm80.c
@@ -140,39 +140,130 @@ struct lm80_data {
u16 alarms; /* Register encoding, combined */
};
-/*
- * Functions declaration
- */
+static int lm80_read_value(struct i2c_client *client, u8 reg)
+{
+ return i2c_smbus_read_byte_data(client, reg);
+}
-static int lm80_probe(struct i2c_client *client,
- const struct i2c_device_id *id);
-static int lm80_detect(struct i2c_client *client, struct i2c_board_info *info);
-static void lm80_init_client(struct i2c_client *client);
-static struct lm80_data *lm80_update_device(struct device *dev);
-static int lm80_read_value(struct i2c_client *client, u8 reg);
-static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value);
+static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value)
+{
+ return i2c_smbus_write_byte_data(client, reg, value);
+}
-/*
- * Driver data (common to all clients)
- */
+/* Called when we have found a new LM80 and after read errors */
+static void lm80_init_client(struct i2c_client *client)
+{
+ /*
+ * Reset all except Watchdog values and last conversion values
+ * This sets fan-divs to 2, among others. This makes most other
+ * initializations unnecessary
+ */
+ lm80_write_value(client, LM80_REG_CONFIG, 0x80);
+ /* Set 11-bit temperature resolution */
+ lm80_write_value(client, LM80_REG_RES, 0x08);
-static const struct i2c_device_id lm80_id[] = {
- { "lm80", 0 },
- { "lm96080", 1 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, lm80_id);
+ /* Start monitoring */
+ lm80_write_value(client, LM80_REG_CONFIG, 0x01);
+}
-static struct i2c_driver lm80_driver = {
- .class = I2C_CLASS_HWMON,
- .driver = {
- .name = "lm80",
- },
- .probe = lm80_probe,
- .id_table = lm80_id,
- .detect = lm80_detect,
- .address_list = normal_i2c,
-};
+static struct lm80_data *lm80_update_device(struct device *dev)
+{
+ struct lm80_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int i;
+ int rv;
+ int prev_rv;
+ struct lm80_data *ret = data;
+
+ mutex_lock(&data->update_lock);
+
+ if (data->error)
+ lm80_init_client(client);
+
+ if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
+ dev_dbg(dev, "Starting lm80 update\n");
+ for (i = 0; i <= 6; i++) {
+ rv = lm80_read_value(client, LM80_REG_IN(i));
+ if (rv < 0)
+ goto abort;
+ data->in[i_input][i] = rv;
+
+ rv = lm80_read_value(client, LM80_REG_IN_MIN(i));
+ if (rv < 0)
+ goto abort;
+ data->in[i_min][i] = rv;
+
+ rv = lm80_read_value(client, LM80_REG_IN_MAX(i));
+ if (rv < 0)
+ goto abort;
+ data->in[i_max][i] = rv;
+ }
+
+ rv = lm80_read_value(client, LM80_REG_FAN1);
+ if (rv < 0)
+ goto abort;
+ data->fan[f_input][0] = rv;
+
+ rv = lm80_read_value(client, LM80_REG_FAN_MIN(1));
+ if (rv < 0)
+ goto abort;
+ data->fan[f_min][0] = rv;
+
+ rv = lm80_read_value(client, LM80_REG_FAN2);
+ if (rv < 0)
+ goto abort;
+ data->fan[f_input][1] = rv;
+
+ rv = lm80_read_value(client, LM80_REG_FAN_MIN(2));
+ if (rv < 0)
+ goto abort;
+ data->fan[f_min][1] = rv;
+
+ prev_rv = rv = lm80_read_value(client, LM80_REG_TEMP);
+ if (rv < 0)
+ goto abort;
+ rv = lm80_read_value(client, LM80_REG_RES);
+ if (rv < 0)
+ goto abort;
+ data->temp[t_input] = (prev_rv << 8) | (rv & 0xf0);
+
+ for (i = t_input + 1; i < t_num_temp; i++) {
+ rv = lm80_read_value(client, temp_regs[i]);
+ if (rv < 0)
+ goto abort;
+ data->temp[i] = rv << 8;
+ }
+
+ rv = lm80_read_value(client, LM80_REG_FANDIV);
+ if (rv < 0)
+ goto abort;
+ data->fan_div[0] = (rv >> 2) & 0x03;
+ data->fan_div[1] = (rv >> 4) & 0x03;
+
+ prev_rv = rv = lm80_read_value(client, LM80_REG_ALARM1);
+ if (rv < 0)
+ goto abort;
+ rv = lm80_read_value(client, LM80_REG_ALARM2);
+ if (rv < 0)
+ goto abort;
+ data->alarms = prev_rv + (rv << 8);
+
+ data->last_updated = jiffies;
+ data->valid = 1;
+ data->error = 0;
+ }
+ goto done;
+
+abort:
+ ret = ERR_PTR(rv);
+ data->valid = 0;
+ data->error = 1;
+
+done:
+ mutex_unlock(&data->update_lock);
+
+ return ret;
+}
/*
* Sysfs stuff
@@ -553,130 +644,27 @@ static int lm80_probe(struct i2c_client *client,
return PTR_ERR_OR_ZERO(hwmon_dev);
}
-static int lm80_read_value(struct i2c_client *client, u8 reg)
-{
- return i2c_smbus_read_byte_data(client, reg);
-}
-
-static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value)
-{
- return i2c_smbus_write_byte_data(client, reg, value);
-}
-
-/* Called when we have found a new LM80. */
-static void lm80_init_client(struct i2c_client *client)
-{
- /*
- * Reset all except Watchdog values and last conversion values
- * This sets fan-divs to 2, among others. This makes most other
- * initializations unnecessary
- */
- lm80_write_value(client, LM80_REG_CONFIG, 0x80);
- /* Set 11-bit temperature resolution */
- lm80_write_value(client, LM80_REG_RES, 0x08);
-
- /* Start monitoring */
- lm80_write_value(client, LM80_REG_CONFIG, 0x01);
-}
-
-static struct lm80_data *lm80_update_device(struct device *dev)
-{
- struct lm80_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
- int i;
- int rv;
- int prev_rv;
- struct lm80_data *ret = data;
-
- mutex_lock(&data->update_lock);
-
- if (data->error)
- lm80_init_client(client);
-
- if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
- dev_dbg(dev, "Starting lm80 update\n");
- for (i = 0; i <= 6; i++) {
- rv = lm80_read_value(client, LM80_REG_IN(i));
- if (rv < 0)
- goto abort;
- data->in[i_input][i] = rv;
-
- rv = lm80_read_value(client, LM80_REG_IN_MIN(i));
- if (rv < 0)
- goto abort;
- data->in[i_min][i] = rv;
-
- rv = lm80_read_value(client, LM80_REG_IN_MAX(i));
- if (rv < 0)
- goto abort;
- data->in[i_max][i] = rv;
- }
-
- rv = lm80_read_value(client, LM80_REG_FAN1);
- if (rv < 0)
- goto abort;
- data->fan[f_input][0] = rv;
-
- rv = lm80_read_value(client, LM80_REG_FAN_MIN(1));
- if (rv < 0)
- goto abort;
- data->fan[f_min][0] = rv;
-
- rv = lm80_read_value(client, LM80_REG_FAN2);
- if (rv < 0)
- goto abort;
- data->fan[f_input][1] = rv;
-
- rv = lm80_read_value(client, LM80_REG_FAN_MIN(2));
- if (rv < 0)
- goto abort;
- data->fan[f_min][1] = rv;
-
- prev_rv = rv = lm80_read_value(client, LM80_REG_TEMP);
- if (rv < 0)
- goto abort;
- rv = lm80_read_value(client, LM80_REG_RES);
- if (rv < 0)
- goto abort;
- data->temp[t_input] = (prev_rv << 8) | (rv & 0xf0);
-
- for (i = t_input + 1; i < t_num_temp; i++) {
- rv = lm80_read_value(client, temp_regs[i]);
- if (rv < 0)
- goto abort;
- data->temp[i] = rv << 8;
- }
-
- rv = lm80_read_value(client, LM80_REG_FANDIV);
- if (rv < 0)
- goto abort;
- data->fan_div[0] = (rv >> 2) & 0x03;
- data->fan_div[1] = (rv >> 4) & 0x03;
-
- prev_rv = rv = lm80_read_value(client, LM80_REG_ALARM1);
- if (rv < 0)
- goto abort;
- rv = lm80_read_value(client, LM80_REG_ALARM2);
- if (rv < 0)
- goto abort;
- data->alarms = prev_rv + (rv << 8);
-
- data->last_updated = jiffies;
- data->valid = 1;
- data->error = 0;
- }
- goto done;
-
-abort:
- ret = ERR_PTR(rv);
- data->valid = 0;
- data->error = 1;
+/*
+ * Driver data (common to all clients)
+ */
-done:
- mutex_unlock(&data->update_lock);
+static const struct i2c_device_id lm80_id[] = {
+ { "lm80", 0 },
+ { "lm96080", 1 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, lm80_id);
- return ret;
-}
+static struct i2c_driver lm80_driver = {
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = "lm80",
+ },
+ .probe = lm80_probe,
+ .id_table = lm80_id,
+ .detect = lm80_detect,
+ .address_list = normal_i2c,
+};
module_i2c_driver(lm80_driver);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 16:34:31 +0000