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authorGuenter Roeck <linux@roeck-us.net>2012-03-23 10:02:18 +0100
committerJean Delvare <khali@endymion.delvare>2012-03-23 10:02:18 +0100
commitae544f64cc7b0850471f62e6808068ef77b90763 (patch)
tree58234ec3e9a5dce6f3bb755546f9b2998b461961 /drivers/hwmon
parentf36ffeab0a1d0a0a56edd39be7a97a07486305e8 (diff)
downloadlinux-ae544f64cc7b0850471f62e6808068ef77b90763.tar.bz2
hwmon: (lm90) Add support for GMT G781
GMT G781 is a ADM1032-compatible temperature sensor chip. Add support to the LM90 driver. Cc: Mike Gorchak <lestat@i.com.ua> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/Kconfig3
-rw-r--r--drivers/hwmon/lm90.c19
2 files changed, 20 insertions, 2 deletions
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 783a3144ffd7..fc3f4e1cad2c 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -648,7 +648,8 @@ config SENSORS_LM90
LM86, LM89 and LM99, Analog Devices ADM1032, ADT7461, and ADT7461A,
Maxim MAX6646, MAX6647, MAX6648, MAX6649, MAX6657, MAX6658, MAX6659,
MAX6680, MAX6681, MAX6692, MAX6695, MAX6696, ON Semiconductor NCT1008,
- Winbond/Nuvoton W83L771W/G/AWG/ASG and Philips SA56004 sensor chips.
+ Winbond/Nuvoton W83L771W/G/AWG/ASG, Philips SA56004, and GMT G781
+ sensor chips.
This driver can also be built as a module. If so, the module
will be called lm90.
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 22efae34c2f6..3309a511e8e1 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -57,6 +57,9 @@
* This driver also supports the SA56004 from Philips. This device is
* pin-compatible with the LM86, the ED/EDP parts are also address-compatible.
*
+ * This driver also supports the G781 from GMT. This device is compatible
+ * with the ADM1032.
+ *
* Since the LM90 was the first chipset supported by this driver, most
* comments will refer to this chipset, but are actually general and
* concern all supported chipsets, unless mentioned otherwise.
@@ -107,7 +110,7 @@ static const unsigned short normal_i2c[] = {
0x4d, 0x4e, 0x4f, I2C_CLIENT_END };
enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680,
- max6646, w83l771, max6696, sa56004 };
+ max6646, w83l771, max6696, sa56004, g781 };
/*
* The LM90 registers
@@ -184,6 +187,7 @@ static const struct i2c_device_id lm90_id[] = {
{ "adm1032", adm1032 },
{ "adt7461", adt7461 },
{ "adt7461a", adt7461 },
+ { "g781", g781 },
{ "lm90", lm90 },
{ "lm86", lm86 },
{ "lm89", lm86 },
@@ -229,6 +233,12 @@ static const struct lm90_params lm90_params[] = {
.alert_alarms = 0x7c,
.max_convrate = 10,
},
+ [g781] = {
+ .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
+ | LM90_HAVE_BROKEN_ALERT,
+ .alert_alarms = 0x7c,
+ .max_convrate = 8,
+ },
[lm86] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT,
.alert_alarms = 0x7b,
@@ -1289,6 +1299,13 @@ static int lm90_detect(struct i2c_client *client,
&& convrate <= 0x09) {
name = "sa56004";
}
+ } else
+ if ((address == 0x4C || address == 0x4D)
+ && man_id == 0x47) { /* GMT */
+ if (chip_id == 0x01 /* G781 */
+ && (config1 & 0x3F) == 0x00
+ && convrate <= 0x08)
+ name = "g781";
}
if (!name) { /* identification failed */