diff options
Diffstat (limited to 'drivers/hwmon/w83l785ts.c')
| -rw-r--r-- | drivers/hwmon/w83l785ts.c | 70 |
1 files changed, 23 insertions, 47 deletions
diff --git a/drivers/hwmon/w83l785ts.c b/drivers/hwmon/w83l785ts.c index ea295b9fc4f4..9b6c4c10fba7 100644 --- a/drivers/hwmon/w83l785ts.c +++ b/drivers/hwmon/w83l785ts.c @@ -1,7 +1,7 @@ /* * w83l785ts.c - Part of lm_sensors, Linux kernel modules for hardware * monitoring - * Copyright (C) 2003-2004 Jean Delvare <khali@linux-fr.org> + * Copyright (C) 2003-2009 Jean Delvare <khali@linux-fr.org> * * Inspired from the lm83 driver. The W83L785TS-S is a sensor chip made * by Winbond. It reports a single external temperature with a 1 deg @@ -146,60 +146,36 @@ static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp, NULL, 1); */ /* Return 0 if detection is successful, -ENODEV otherwise */ -static int w83l785ts_detect(struct i2c_client *new_client, int kind, +static int w83l785ts_detect(struct i2c_client *client, int kind, struct i2c_board_info *info) { - struct i2c_adapter *adapter = new_client->adapter; + struct i2c_adapter *adapter = client->adapter; + u16 man_id; + u8 chip_id; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -ENODEV; - /* - * Now we do the remaining detection. A negative kind means that - * the driver was loaded with no force parameter (default), so we - * must both detect and identify the chip (actually there is only - * one possible kind of chip for now, W83L785TS-S). A zero kind means - * that the driver was loaded with the force parameter, the detection - * step shall be skipped. A positive kind means that the driver - * was loaded with the force parameter and a given kind of chip is - * requested, so both the detection and the identification steps - * are skipped. - */ - if (kind < 0) { /* detection */ - if (((w83l785ts_read_value(new_client, - W83L785TS_REG_CONFIG, 0) & 0x80) != 0x00) - || ((w83l785ts_read_value(new_client, - W83L785TS_REG_TYPE, 0) & 0xFC) != 0x00)) { - dev_dbg(&adapter->dev, - "W83L785TS-S detection failed at 0x%02x.\n", - new_client->addr); - return -ENODEV; - } + /* detection */ + if ((w83l785ts_read_value(client, W83L785TS_REG_CONFIG, 0) & 0x80) + || (w83l785ts_read_value(client, W83L785TS_REG_TYPE, 0) & 0xFC)) { + dev_dbg(&adapter->dev, + "W83L785TS-S detection failed at 0x%02x\n", + client->addr); + return -ENODEV; } - if (kind <= 0) { /* identification */ - u16 man_id; - u8 chip_id; - - man_id = (w83l785ts_read_value(new_client, - W83L785TS_REG_MAN_ID1, 0) << 8) + - w83l785ts_read_value(new_client, - W83L785TS_REG_MAN_ID2, 0); - chip_id = w83l785ts_read_value(new_client, - W83L785TS_REG_CHIP_ID, 0); - - if (man_id == 0x5CA3) { /* Winbond */ - if (chip_id == 0x70) { /* W83L785TS-S */ - kind = w83l785ts; - } - } - - if (kind <= 0) { /* identification failed */ - dev_info(&adapter->dev, - "Unsupported chip (man_id=0x%04X, " - "chip_id=0x%02X).\n", man_id, chip_id); - return -ENODEV; - } + /* Identification */ + man_id = (w83l785ts_read_value(client, W83L785TS_REG_MAN_ID1, 0) << 8) + + w83l785ts_read_value(client, W83L785TS_REG_MAN_ID2, 0); + chip_id = w83l785ts_read_value(client, W83L785TS_REG_CHIP_ID, 0); + + if (man_id != 0x5CA3 /* Winbond */ + || chip_id != 0x70) { /* W83L785TS-S */ + dev_dbg(&adapter->dev, + "Unsupported chip (man_id=0x%04X, chip_id=0x%02X)\n", + man_id, chip_id); + return -ENODEV; } strlcpy(info->type, "w83l785ts", I2C_NAME_SIZE); |