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hwmon: (lm90) Add support for GMT G781

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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>
This commit is contained in:
Guenter Roeck 2012-03-23 10:02:18 +01:00 committed by Jean Delvare
parent f36ffeab0a
commit ae544f64cc
3 changed files with 24 additions and 2 deletions
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4
Documentation/hwmon/lm90
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@ -118,6 +118,10 @@ Supported chips:
Addresses scanned: I2C 0x48 through 0x4F Addresses scanned: I2C 0x48 through 0x4F
Datasheet: Publicly available at NXP website Datasheet: Publicly available at NXP website
http://ics.nxp.com/products/interface/datasheet/sa56004x.pdf http://ics.nxp.com/products/interface/datasheet/sa56004x.pdf
* GMT G781
Prefix: 'g781'
Addresses scanned: I2C 0x4c, 0x4d
Datasheet: Not publicly available from GMT
Author: Jean Delvare <khali@linux-fr.org> Author: Jean Delvare <khali@linux-fr.org>

3
drivers/hwmon/Kconfig
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@ -648,7 +648,8 @@ config SENSORS_LM90
LM86, LM89 and LM99, Analog Devices ADM1032, ADT7461, and ADT7461A, LM86, LM89 and LM99, Analog Devices ADM1032, ADT7461, and ADT7461A,
Maxim MAX6646, MAX6647, MAX6648, MAX6649, MAX6657, MAX6658, MAX6659, Maxim MAX6646, MAX6647, MAX6648, MAX6649, MAX6657, MAX6658, MAX6659,
MAX6680, MAX6681, MAX6692, MAX6695, MAX6696, ON Semiconductor NCT1008, 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 This driver can also be built as a module. If so, the module
will be called lm90. will be called lm90.

19
drivers/hwmon/lm90.c
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@ -57,6 +57,9 @@
* This driver also supports the SA56004 from Philips. This device is * This driver also supports the SA56004 from Philips. This device is
* pin-compatible with the LM86, the ED/EDP parts are also address-compatible. * 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 * Since the LM90 was the first chipset supported by this driver, most
* comments will refer to this chipset, but are actually general and * comments will refer to this chipset, but are actually general and
* concern all supported chipsets, unless mentioned otherwise. * concern all supported chipsets, unless mentioned otherwise.
@ -107,7 +110,7 @@ static const unsigned short normal_i2c[] = {
0x4d, 0x4e, 0x4f, I2C_CLIENT_END }; 0x4d, 0x4e, 0x4f, I2C_CLIENT_END };
enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680, enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680,
max6646, w83l771, max6696, sa56004 }; max6646, w83l771, max6696, sa56004, g781 };
/* /*
* The LM90 registers * The LM90 registers
@ -184,6 +187,7 @@ static const struct i2c_device_id lm90_id[] = {
{ "adm1032", adm1032 }, { "adm1032", adm1032 },
{ "adt7461", adt7461 }, { "adt7461", adt7461 },
{ "adt7461a", adt7461 }, { "adt7461a", adt7461 },
{ "g781", g781 },
{ "lm90", lm90 }, { "lm90", lm90 },
{ "lm86", lm86 }, { "lm86", lm86 },
{ "lm89", lm86 }, { "lm89", lm86 },
@ -229,6 +233,12 @@ static const struct lm90_params lm90_params[] = {
.alert_alarms = 0x7c, .alert_alarms = 0x7c,
.max_convrate = 10, .max_convrate = 10,
}, },
[g781] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
| LM90_HAVE_BROKEN_ALERT,
.alert_alarms = 0x7c,
.max_convrate = 8,
},
[lm86] = { [lm86] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT, .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT,
.alert_alarms = 0x7b, .alert_alarms = 0x7b,
@ -1289,6 +1299,13 @@ static int lm90_detect(struct i2c_client *client,
&& convrate <= 0x09) { && convrate <= 0x09) {
name = "sa56004"; 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 */ if (!name) { /* identification failed */