diff options
| -rw-r--r-- | drivers/hwmon/pmbus/adm1275.c | 71 |
1 files changed, 50 insertions, 21 deletions
diff --git a/drivers/hwmon/pmbus/adm1275.c b/drivers/hwmon/pmbus/adm1275.c index 980a4d9d502..81c7c2ead6f 100644 --- a/drivers/hwmon/pmbus/adm1275.c +++ b/drivers/hwmon/pmbus/adm1275.c @@ -170,35 +170,71 @@ static int adm1275_read_byte_data(struct i2c_client *client, int page, int reg) return ret; } +static const struct i2c_device_id adm1275_id[] = { + { "adm1275", adm1275 }, + { "adm1276", adm1276 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, adm1275_id); + static int adm1275_probe(struct i2c_client *client, const struct i2c_device_id *id) { + u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1]; int config, device_config; int ret; struct pmbus_driver_info *info; struct adm1275_data *data; + const struct i2c_device_id *mid; if (!i2c_check_functionality(client->adapter, - I2C_FUNC_SMBUS_READ_BYTE_DATA)) + I2C_FUNC_SMBUS_READ_BYTE_DATA + | I2C_FUNC_SMBUS_BLOCK_DATA)) return -ENODEV; - data = kzalloc(sizeof(struct adm1275_data), GFP_KERNEL); - if (!data) - return -ENOMEM; + ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, block_buffer); + if (ret < 0) { + dev_err(&client->dev, "Failed to read Manufacturer ID\n"); + return ret; + } + if (ret != 3 || strncmp(block_buffer, "ADI", 3)) { + dev_err(&client->dev, "Unsupported Manufacturer ID\n"); + return -ENODEV; + } - config = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG); - if (config < 0) { - ret = config; - goto err_mem; + ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, block_buffer); + if (ret < 0) { + dev_err(&client->dev, "Failed to read Manufacturer Model\n"); + return ret; + } + for (mid = adm1275_id; mid->name[0]; mid++) { + if (!strncasecmp(mid->name, block_buffer, strlen(mid->name))) + break; + } + if (!mid->name[0]) { + dev_err(&client->dev, "Unsupported device\n"); + return -ENODEV; } + if (id->driver_data != mid->driver_data) + dev_notice(&client->dev, + "Device mismatch: Configured %s, detected %s\n", + id->name, mid->name); + + config = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG); + if (config < 0) + return config; + device_config = i2c_smbus_read_byte_data(client, ADM1275_DEVICE_CONFIG); - if (device_config < 0) { - ret = device_config; - goto err_mem; - } + if (device_config < 0) + return device_config; + + data = kzalloc(sizeof(struct adm1275_data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->id = mid->driver_data; - data->id = id->driver_data; info = &data->info; info->pages = 1; @@ -233,7 +269,7 @@ static int adm1275_probe(struct i2c_client *client, if (device_config & ADM1275_IOUT_WARN2_SELECT) data->have_oc_fault = true; - switch (id->driver_data) { + switch (data->id) { case adm1275: if (config & ADM1275_VIN_VOUT_SELECT) info->func[0] |= @@ -281,13 +317,6 @@ static int adm1275_remove(struct i2c_client *client) return 0; } -static const struct i2c_device_id adm1275_id[] = { - { "adm1275", adm1275 }, - { "adm1276", adm1276 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, adm1275_id); - static struct i2c_driver adm1275_driver = { .driver = { .name = "adm1275", |