diff options
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/pmbus/pmbus_core.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index 1f43bf0f23b2..138f83538c8b 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -2351,6 +2351,42 @@ static int pmbus_debugfs_get_status(void *data, u64 *val) DEFINE_DEBUGFS_ATTRIBUTE(pmbus_debugfs_ops_status, pmbus_debugfs_get_status, NULL, "0x%04llx\n"); +static int pmbus_debugfs_get_pec(void *data, u64 *val) +{ + struct i2c_client *client = data; + + *val = !!(client->flags & I2C_CLIENT_PEC); + + return 0; +} + +static int pmbus_debugfs_set_pec(void *data, u64 val) +{ + int rc; + struct i2c_client *client = data; + + if (!val) { + client->flags &= ~I2C_CLIENT_PEC; + return 0; + } + + if (val != 1) + return -EINVAL; + + rc = i2c_smbus_read_byte_data(client, PMBUS_CAPABILITY); + if (rc < 0) + return rc; + + if (!(rc & PB_CAPABILITY_ERROR_CHECK)) + return -EOPNOTSUPP; + + client->flags |= I2C_CLIENT_PEC; + + return 0; +} +DEFINE_DEBUGFS_ATTRIBUTE(pmbus_debugfs_ops_pec, pmbus_debugfs_get_pec, + pmbus_debugfs_set_pec, "%llu\n"); + static int pmbus_init_debugfs(struct i2c_client *client, struct pmbus_data *data) { @@ -2379,6 +2415,9 @@ static int pmbus_init_debugfs(struct i2c_client *client, if (!entries) return -ENOMEM; + debugfs_create_file("pec", 0664, data->debugfs, client, + &pmbus_debugfs_ops_pec); + for (i = 0; i < data->info->pages; ++i) { /* Check accessibility of status register if it's not page 0 */ if (!i || pmbus_check_status_register(client, i)) { |