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Subject[PATCH 37/40] hwmon: (lm90) Add explicit support for ADM1020
Date
ADM1020 is compatible with ADM1021 but has a separate chip revision and
a limited I2C address range.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
Documentation/hwmon/lm90.rst | 10 +++++++++-
drivers/hwmon/Kconfig | 4 ++--
drivers/hwmon/lm90.c | 10 +++++++++-
3 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/Documentation/hwmon/lm90.rst b/Documentation/hwmon/lm90.rst
index c3ce54f61f44..b2ca10f37218 100644
--- a/Documentation/hwmon/lm90.rst
+++ b/Documentation/hwmon/lm90.rst
@@ -51,6 +51,14 @@ Supported chips:

http://www.national.com/mpf/LM/LM86.html

+ * Analog Devices ADM1020
+
+ Prefix: 'adm1020'
+
+ Addresses scanned: I2C 0x4c - 0x4e
+
+ Datasheet: Publicly available at the Analog Devices website
+
* Analog Devices ADM1021

Prefix: 'adm1021'
@@ -457,7 +465,7 @@ features:
LM84:
* 8 bit sensor resolution

-ADM1021, GL523SM, MAX1617, NE1617, NE1617A, THMC10:
+ADM1020, ADM1021, GL523SM, MAX1617, NE1617, NE1617A, THMC10:
* 8 bit sensor resolution
* Low temperature limits

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 32c605eaec7e..494539e4be3d 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -1360,8 +1360,8 @@ config SENSORS_LM90
depends on I2C
help
If you say yes here you get support for National Semiconductor LM84,
- LM90, LM86, LM89 and LM99, Analog Devices ADM2021, ADM1021A, ADM1023,
- ADM1032, ADT7461, ADT7461A, ADT7481, ADT7482, and ADT7483A,
+ LM90, LM86, LM89 and LM99, Analog Devices ADM1020, ADM2021, ADM1021A,
+ ADM1023, ADM1032, ADT7461, ADT7461A, ADT7481, ADT7482, and ADT7483A,
Maxim MAX1617, MAX6642, MAX6646, MAX6647, MAX6648, MAX6649, MAX6654,
MAX6657, MAX6658, MAX6659, MAX6680, MAX6681, MAX6692, MAX6695,
MAX6696,
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 6d1e7052e3ed..de51d205b63f 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -228,6 +228,7 @@ enum chips { adm1023, adm1032, adt7461, adt7461a, adt7481,
*/

static const struct i2c_device_id lm90_id[] = {
+ { "adm1020", max1617 },
{ "adm1021", max1617 },
{ "adm1023", adm1023 },
{ "adm1032", adm1032 },
@@ -1829,7 +1830,8 @@ static const char *lm90_detect_analog(struct i2c_client *client, bool common_add
(config1 & 0x0b) == 0x08 && convrate <= 0x0a)
name = "adt7421";
break;
- case 0x30 ... 0x3e: /* ADM1021A, ADM1023 */
+ case 0x30 ... 0x38: /* ADM1021A, ADM1023 */
+ case 0x3a ... 0x3e:
/*
* ADM1021A and compatible chips will be mis-detected as
* ADM1023. Chips labeled 'ADM1021A' and 'ADM1023' were both
@@ -1847,6 +1849,12 @@ static const char *lm90_detect_analog(struct i2c_client *client, bool common_add
!(status & 0x03) && !(config1 & 0x3f) && !(convrate & 0xf8))
name = "adm1023";
break;
+ case 0x39: /* ADM1020 (undocumented) */
+ if (man_id2 == 0x00 && chip_id2 == 0x00 &&
+ (address == 0x4c || address == 0x4d || address == 0x4e) &&
+ !(status & 0x03) && !(config1 & 0x3f) && !(convrate & 0xf8))
+ name = "adm1020";
+ break;
case 0x3f: /* NCT210 */
if (man_id2 == 0x00 && chip_id2 == 0x00 && common_address &&
!(status & 0x03) && !(config1 & 0x3f) && !(convrate & 0xf8))
--
2.35.1
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