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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-09 19:53:11 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-09 19:53:11 -0800
commitf71eaf68406cfee91b6a96bcdf7ce33dc78829c5 (patch)
tree92a1663ae15d521f25849d28ebb4dfad10567892 /drivers/hwmon/w83l785ts.c
parent78f1ae193d1662c22cfebb916e788e1ca896c0fe (diff)
parent54fe4671aa5853ca88da72d67e969a3d8de6dcf6 (diff)
Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: (41 commits) hwmon: (adt7475) Add VID support for the ADT7476 hwmon: (adt7475) Add an entry in MAINTAINERS hwmon: (adt7475) Add support for the ADT7476 hwmon: (adt7475) Voltage attenuators can be bypassed hwmon: (adt7475) Print device information on probe hwmon: (adt7475) Handle alternative pin functions hwmon: (adt7475) Move sysfs files removal to a separate function hwmon: (adt7475) Add support for the ADT7490 hwmon: (adt7475) Improve device detection hwmon: (adt7475) Add missing static marker hwmon: (adt7475) Rework voltage inputs handling hwmon: (adt7475) Implement pwm_use_point2_pwm_at_crit hwmon: (adt7475) New documentation hwmon: (adt7475) Add support for the ADT7473 hwmon: (f71882fg) Add support for the f71889fg (version 2) hwmon: (f71882fg) Fix sysfs file removal hwmon: (f71882fg) Cleanup sysfs attr creation 2/2 hwmon: (f71882fg) Cleanup sysfs attr creation 1/2 hwmon: (thmc50) Stop using I2C_CLIENT_MODULE_PARM hwmon: Add Freescale MC13783 ADC driver ...
Diffstat (limited to 'drivers/hwmon/w83l785ts.c')
-rw-r--r--drivers/hwmon/w83l785ts.c70
1 files changed, 23 insertions, 47 deletions
diff --git a/drivers/hwmon/w83l785ts.c b/drivers/hwmon/w83l785ts.c
index ea295b9fc4f..9b6c4c10fba 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);