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path: root/drivers/hwmon/lm90.c
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Diffstat (limited to 'drivers/hwmon/lm90.c')
-rw-r--r--drivers/hwmon/lm90.c113
1 files changed, 67 insertions, 46 deletions
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index bdfd675488ae..22b14a68e35e 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -57,6 +57,9 @@
* This driver also supports the SA56004 from Philips. This device is
* pin-compatible with the LM86, the ED/EDP parts are also address-compatible.
*
+ * This driver also supports the G781 from GMT. This device is compatible
+ * with the ADM1032.
+ *
* Since the LM90 was the first chipset supported by this driver, most
* comments will refer to this chipset, but are actually general and
* concern all supported chipsets, unless mentioned otherwise.
@@ -107,7 +110,7 @@ static const unsigned short normal_i2c[] = {
0x4d, 0x4e, 0x4f, I2C_CLIENT_END };
enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680,
- max6646, w83l771, max6696, sa56004 };
+ max6646, w83l771, max6696, sa56004, g781 };
/*
* The LM90 registers
@@ -184,6 +187,7 @@ static const struct i2c_device_id lm90_id[] = {
{ "adm1032", adm1032 },
{ "adt7461", adt7461 },
{ "adt7461a", adt7461 },
+ { "g781", g781 },
{ "lm90", lm90 },
{ "lm86", lm86 },
{ "lm89", lm86 },
@@ -229,6 +233,12 @@ static const struct lm90_params lm90_params[] = {
.alert_alarms = 0x7c,
.max_convrate = 10,
},
+ [g781] = {
+ .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
+ | LM90_HAVE_BROKEN_ALERT,
+ .alert_alarms = 0x7c,
+ .max_convrate = 8,
+ },
[lm86] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT,
.alert_alarms = 0x7b,
@@ -308,22 +318,24 @@ struct lm90_data {
/* registers values */
s8 temp8[8]; /* 0: local low limit
- 1: local high limit
- 2: local critical limit
- 3: remote critical limit
- 4: local emergency limit (max6659 and max6695/96)
- 5: remote emergency limit (max6659 and max6695/96)
- 6: remote 2 critical limit (max6695/96 only)
- 7: remote 2 emergency limit (max6695/96 only) */
+ * 1: local high limit
+ * 2: local critical limit
+ * 3: remote critical limit
+ * 4: local emergency limit (max6659 and max6695/96)
+ * 5: remote emergency limit (max6659 and max6695/96)
+ * 6: remote 2 critical limit (max6695/96 only)
+ * 7: remote 2 emergency limit (max6695/96 only)
+ */
s16 temp11[8]; /* 0: remote input
- 1: remote low limit
- 2: remote high limit
- 3: remote offset (except max6646, max6657/58/59,
- and max6695/96)
- 4: local input
- 5: remote 2 input (max6695/96 only)
- 6: remote 2 low limit (max6695/96 only)
- 7: remote 2 high limit (ma6695/96 only) */
+ * 1: remote low limit
+ * 2: remote high limit
+ * 3: remote offset (except max6646, max6657/58/59,
+ * and max6695/96)
+ * 4: local input
+ * 5: remote 2 input (max6695/96 only)
+ * 6: remote 2 low limit (max6695/96 only)
+ * 7: remote 2 high limit (max6695/96 only)
+ */
u8 temp_hyst;
u16 alarms; /* bitvector (upper 8 bits for max6695/96) */
};
@@ -533,8 +545,10 @@ static struct lm90_data *lm90_update_device(struct device *dev)
data->alarms |= alarms << 8;
}
- /* Re-enable ALERT# output if it was originally enabled and
- * relevant alarms are all clear */
+ /*
+ * Re-enable ALERT# output if it was originally enabled and
+ * relevant alarms are all clear
+ */
if ((data->config_orig & 0x80) == 0
&& (data->alarms & data->alert_alarms) == 0) {
u8 config;
@@ -917,7 +931,7 @@ static ssize_t set_update_interval(struct device *dev,
return err;
mutex_lock(&data->update_lock);
- lm90_set_convrate(client, data, val);
+ lm90_set_convrate(client, data, SENSORS_LIMIT(val, 0, 100000));
mutex_unlock(&data->update_lock);
return count;
@@ -1162,8 +1176,10 @@ static int lm90_detect(struct i2c_client *client,
&& (config1 & 0x3F) == 0x00
&& convrate <= 0x0A) {
name = "adm1032";
- /* The ADM1032 supports PEC, but only if combined
- transactions are not used. */
+ /*
+ * The ADM1032 supports PEC, but only if combined
+ * transactions are not used.
+ */
if (i2c_check_functionality(adapter,
I2C_FUNC_SMBUS_BYTE))
info->flags |= I2C_CLIENT_PEC;
@@ -1283,6 +1299,13 @@ static int lm90_detect(struct i2c_client *client,
&& convrate <= 0x09) {
name = "sa56004";
}
+ } else
+ if ((address == 0x4C || address == 0x4D)
+ && man_id == 0x47) { /* GMT */
+ if (chip_id == 0x01 /* G781 */
+ && (config1 & 0x3F) == 0x00
+ && convrate <= 0x08)
+ name = "g781";
}
if (!name) { /* identification failed */
@@ -1313,6 +1336,15 @@ static void lm90_remove_files(struct i2c_client *client, struct lm90_data *data)
sysfs_remove_group(&dev->kobj, &lm90_group);
}
+static void lm90_restore_conf(struct i2c_client *client, struct lm90_data *data)
+{
+ /* Restore initial configuration */
+ i2c_smbus_write_byte_data(client, LM90_REG_W_CONVRATE,
+ data->convrate_orig);
+ i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1,
+ data->config_orig);
+}
+
static void lm90_init_client(struct i2c_client *client)
{
u8 config, convrate;
@@ -1382,8 +1414,10 @@ static int lm90_probe(struct i2c_client *client,
client->flags &= ~I2C_CLIENT_PEC;
}
- /* Different devices have different alarm bits triggering the
- * ALERT# output */
+ /*
+ * Different devices have different alarm bits triggering the
+ * ALERT# output
+ */
data->alert_alarms = lm90_params[data->kind].alert_alarms;
/* Set chip capabilities */
@@ -1399,7 +1433,7 @@ static int lm90_probe(struct i2c_client *client,
/* Register sysfs hooks */
err = sysfs_create_group(&dev->kobj, &lm90_group);
if (err)
- goto exit_free;
+ goto exit_restore;
if (client->flags & I2C_CLIENT_PEC) {
err = device_create_file(dev, &dev_attr_pec);
if (err)
@@ -1438,7 +1472,8 @@ static int lm90_probe(struct i2c_client *client,
exit_remove_files:
lm90_remove_files(client, data);
-exit_free:
+exit_restore:
+ lm90_restore_conf(client, data);
kfree(data);
exit:
return err;
@@ -1450,12 +1485,7 @@ static int lm90_remove(struct i2c_client *client)
hwmon_device_unregister(data->hwmon_dev);
lm90_remove_files(client, data);
-
- /* Restore initial configuration */
- i2c_smbus_write_byte_data(client, LM90_REG_W_CONVRATE,
- data->convrate_orig);
- i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1,
- data->config_orig);
+ lm90_restore_conf(client, data);
kfree(data);
return 0;
@@ -1488,9 +1518,11 @@ static void lm90_alert(struct i2c_client *client, unsigned int flag)
dev_warn(&client->dev,
"temp%d out of range, please check!\n", 3);
- /* Disable ALERT# output, because these chips don't implement
- SMBus alert correctly; they should only hold the alert line
- low briefly. */
+ /*
+ * Disable ALERT# output, because these chips don't implement
+ * SMBus alert correctly; they should only hold the alert line
+ * low briefly.
+ */
if ((data->flags & LM90_HAVE_BROKEN_ALERT)
&& (alarms & data->alert_alarms)) {
dev_dbg(&client->dev, "Disabling ALERT#\n");
@@ -1514,19 +1546,8 @@ static struct i2c_driver lm90_driver = {
.address_list = normal_i2c,
};
-static int __init sensors_lm90_init(void)
-{
- return i2c_add_driver(&lm90_driver);
-}
-
-static void __exit sensors_lm90_exit(void)
-{
- i2c_del_driver(&lm90_driver);
-}
+module_i2c_driver(lm90_driver);
MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
MODULE_DESCRIPTION("LM90/ADM1032 driver");
MODULE_LICENSE("GPL");
-
-module_init(sensors_lm90_init);
-module_exit(sensors_lm90_exit);
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 05:27:21 +0000