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