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hwmon: (pmbus/ltc2978) add support for more parts.

Browse Source 
LTC2972, LTC2979, LTC3884, LTC3889, LTC7880, LTM4664, LTM4677,
LTM4678, LTM4680, LTM4700.

Signed-off-by: Mike Jones <michael-a1.jones@analog.com>
Link: https://lore.kernel.org/r/1581032654-4330-1-git-send-email-michael-a1.jones@analog.com
[groeck: Fixed checkpatch issues (long lines, whitespace)]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Mike Jones 2020-02-06 16:44:13 -07:00 committed by Guenter Roeck
parent 50b6ced709
commit ee44fafb38
3 changed files with 228 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

170
Documentation/hwmon/ltc2978.rst
View File

@ -3,6 +3,14 @@ Kernel driver ltc2978
Supported chips:
* Linear Technology LTC2972
Prefix: 'ltc2972'
Addresses scanned: -
Datasheet: https://www.analog.com/en/products/ltc2972.html
* Linear Technology LTC2974
Prefix: 'ltc2974'
@ -37,6 +45,14 @@ Supported chips:
https://www.analog.com/en/products/ltc2978a
* Linear Technology LTC2979
Prefix: 'ltc2979'
Addresses scanned: -
Datasheet: https://www.analog.com/en/products/ltc2979
* Linear Technology LTC2980
Prefix: 'ltc2980'
@ -69,6 +85,14 @@ Supported chips:
Datasheet: https://www.analog.com/en/products/ltc3883
* Linear Technology LTC3884
Prefix: 'ltc3884'
Addresses scanned: -
Datasheet: https://www.analog.com/en/products/ltc3884
* Linear Technology LTC3886
Prefix: 'ltc3886'
@ -85,6 +109,22 @@ Supported chips:
Datasheet: https://www.analog.com/en/products/ltc3887
* Linear Technology LTC3889
Prefix: 'ltc3889'
Addresses scanned: -
Datasheet: https://www.analog.com/en/products/ltc3889
* Linear Technology LTC7880
Prefix: 'ltc7880'
Addresses scanned: -
Datasheet: https://www.analog.com/en/products/ltc7880
* Linear Technology LTM2987
Prefix: 'ltm2987'
@ -93,7 +133,15 @@ Supported chips:
Datasheet: https://www.analog.com/en/products/ltm2987
* Linear Technology LTM4675
* Linear Technology LTM4644
Prefix: 'ltm4644'
Addresses scanned: -
Datasheet: https://www.analog.com/en/products/ltm4644
* Linear Technology LTM4675
Prefix: 'ltm4675'
@ -109,6 +157,30 @@ Supported chips:
Datasheet: https://www.analog.com/en/products/ltm4676
* Linear Technology LTM4677
Prefix: 'ltm4677'
Addresses scanned: -
Datasheet: https://www.analog.com/en/products/ltm4677
* Linear Technology LTM4678
Prefix: 'ltm4678'
Addresses scanned: -
Datasheet: https://www.analog.com/en/products/ltm4678
* Analog Devices LTM4680
Prefix: 'ltm4680'
Addresses scanned: -
Datasheet: http://www.analog.com/ltm4680
* Analog Devices LTM4686
Prefix: 'ltm4686'
@ -117,6 +189,15 @@ Supported chips:
Datasheet: http://www.analog.com/ltm4686
* Analog Devices LTM4700
Prefix: 'ltm4700'
Addresses scanned: -
Datasheet: http://www.analog.com/ltm4700
Author: Guenter Roeck <linux@roeck-us.net>
@ -166,13 +247,13 @@ in1_min Minimum input voltage.
in1_max Maximum input voltage.
LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and
LTM2987 only.
LTC2974, LTC2975, LTC2977, LTC2980, LTC2978,
LTC2979 and LTM2987 only.
in1_lcrit Critical minimum input voltage.
LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and
LTM2987 only.
LTC2972, LTC2974, LTC2975, LTC2977, LTC2980, LTC2978,
LTC2979 and LTM2987 only.
in1_crit Critical maximum input voltage.
@ -180,29 +261,34 @@ in1_min_alarm Input voltage low alarm.
in1_max_alarm Input voltage high alarm.
LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and
LTM2987 only.
LTC2972, LTC2974, LTC2975, LTC2977, LTC2980, LTC2978,
LTC2979 and LTM2987 only.
in1_lcrit_alarm Input voltage critical low alarm.
LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and
LTM2987 only.
LTC2972, LTC2974, LTC2975, LTC2977, LTC2980, LTC2978,
LTC2979 and LTM2987 only.
in1_crit_alarm Input voltage critical high alarm.
in1_lowest Lowest input voltage.
LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and
LTM2987 only.
LTC2972, LTC2974, LTC2975, LTC2977, LTC2980, LTC2978,
and LTM2987 only.
in1_highest Highest input voltage.
in1_reset_history Reset input voltage history.
in[N]_label "vout[1-8]".
- LTC2972: N=2-3
- LTC2974, LTC2975: N=2-5
- LTC2977, LTC2980, LTM2987: N=2-9
- LTC2977, LTC2979, LTC2980, LTM2987: N=2-9
- LTC2978: N=2-9
- LTC3880, LTC3882, LTC23886 LTC3887, LTM4675, LTM4676:
N=2-3
- LTC3880, LTC3882, LTC3884, LTC23886 LTC3887, LTC3889,
LTC7880, LTM4644, LTM4675, LTM4676, LTM4677, LTM4678,
LTM4680, LTM4700: N=2-3
- LTC3883: N=2
in[N]_input Measured output voltage.
@ -225,8 +311,7 @@ in[N]_crit_alarm Output voltage critical high alarm.
in[N]_lowest Lowest output voltage.
LTC2974, LTC2975,and LTC2978 only.
LTC2972, LTC2974, LTC2975,and LTC2978 only.
in[N]_highest Highest output voltage.
@ -234,20 +319,24 @@ in[N]_reset_history Reset output voltage history.
temp[N]_input Measured temperature.
- On LTC2972, temp[1-2] report external temperatures,
and temp 3 reports the chip temperature.
- On LTC2974 and LTC2975, temp[1-4] report external
temperatures, and temp5 reports the chip temperature.
- On LTC2977, LTC2980, LTC2978, and LTM2987, only one
temperature measurement is supported and reports
the chip temperature.
- On LTC3880, LTC3882, LTC3887, LTM4675, and LTM4676,
temp1 and temp2 report external temperatures, and
temp3 reports the chip temperature.
- On LTC2977, LTC2979, LTC2980, LTC2978, and LTM2987,
only one temperature measurement is supported and
reports the chip temperature.
- On LTC3880, LTC3882, LTC3886, LTC3887, LTC3889,
LTM4664, LTM4675, LTM4676, LTM4677, LTM4678, LTM4680,
and LTM4700, temp1 and temp2 report external
temperatures, and temp3 reports the chip temperature.
- On LTC3883, temp1 reports an external temperature,
and temp2 reports the chip temperature.
temp[N]_min Mimimum temperature.
LTC2974, LCT2977, LTM2980, LTC2978, and LTM2987 only.
LTC2972, LTC2974, LCT2977, LTM2980, LTC2978,
LTC2979, and LTM2987 only.
temp[N]_max Maximum temperature.
@ -257,8 +346,8 @@ temp[N]_crit Critical high temperature.
temp[N]_min_alarm Temperature low alarm.
LTC2974, LTC2975, LTC2977, LTM2980, LTC2978, and
LTM2987 only.
LTC2972, LTC2974, LTC2975, LTC2977, LTM2980, LTC2978,
LTC2979, and LTM2987 only.
temp[N]_max_alarm Temperature high alarm.
@ -269,8 +358,8 @@ temp[N]_crit_alarm Temperature critical high alarm.
temp[N]_lowest Lowest measured temperature.
- LTC2974, LTC2975, LTC2977, LTM2980, LTC2978, and
LTM2987 only.
- LTC2972, LTC2974, LTC2975, LTC2977, LTM2980, LTC2978,
LTC2979, and LTM2987 only.
- Not supported for chip temperature sensor on LTC2974
and LTC2975.
@ -290,19 +379,22 @@ power1_input Measured input power.
power[N]_label "pout[1-4]".
- LTC2972: N=1-2
- LTC2974, LTC2975: N=1-4
- LTC2977, LTC2980, LTM2987: Not supported
- LTC2977, LTC2979, LTC2980, LTM2987: Not supported
- LTC2978: Not supported
- LTC3880, LTC3882, LTC3886, LTC3887, LTM4675, LTM4676:
N=1-2
- LTC3880, LTC3882, LTC3884, LTC3886, LTC3887, LTC3889,
LTM4664, LTM4675, LTM4676, LTM4677, LTM4678, LTM4680,
LTM4700: N=1-2
- LTC3883: N=2
power[N]_input Measured output power.
curr1_label "iin".
LTC3880, LTC3883, LTC3886, LTC3887, LTM4675,
and LTM4676 only.
LTC3880, LTC3883, LTC3884, LTC3886, LTC3887, LTC3889,
LTM4644, LTM4675, LTM4676, LTM4677, LTM4678, LTM4680,
and LTM4700 only.
curr1_input Measured input current.
@ -320,11 +412,13 @@ curr1_reset_history Reset input current history.
curr[N]_label "iout[1-4]".
- LTC2972: N-1-2
- LTC2974, LTC2975: N=1-4
- LTC2977, LTC2980, LTM2987: not supported
- LTC2977, LTC2979, LTC2980, LTM2987: not supported
- LTC2978: not supported
- LTC3880, LTC3882, LTC3886, LTC3887, LTM4675, LTM4676:
N=2-3
- LTC3880, LTC3882, LTC3884, LTC3886, LTC3887, LTC3889,
LTM4664, LTM4675, LTM4676, LTM4677, LTM4678, LTM4680,
LTM4700: N=2-3
- LTC3883: N=2
curr[N]_input Measured output current.
@ -335,7 +429,7 @@ curr[N]_crit Critical high output current.
curr[N]_lcrit Critical low output current.
LTC2974 and LTC2975 only.
LTC2972, LTC2974 and LTC2975 only.
curr[N]_max_alarm Output current high alarm.
@ -343,11 +437,11 @@ curr[N]_crit_alarm Output current critical high alarm.
curr[N]_lcrit_alarm Output current critical low alarm.
LTC2974 and LTC2975 only.
LTC2972, LTC2974 and LTC2975 only.
curr[N]_lowest Lowest output current.
LTC2974 and LTC2975 only.
LTC2972, LTC2974 and LTC2975 only.
curr[N]_highest Highest output current.

11
drivers/hwmon/pmbus/Kconfig
View File

@ -113,8 +113,8 @@ config SENSORS_LTC2978
tristate "Linear Technologies LTC2978 and compatibles"
help
If you say yes here you get hardware monitoring support for Linear
Technology LTC2974, LTC2975, LTC2977, LTC2978, LTC2980, LTC3880,
LTC3883, LTC3886, LTC3887, LTCM2987, LTM4675, and LTM4676.
Technology LTC2972, LTC2974, LTC2975, LTC2977, LTC2978, LTC2979,
LTC2980, and LTM2987.
This driver can also be built as a module. If so, the module will
be called ltc2978.
@ -123,9 +123,10 @@ config SENSORS_LTC2978_REGULATOR
bool "Regulator support for LTC2978 and compatibles"
depends on SENSORS_LTC2978 && REGULATOR
help
If you say yes here you get regulator support for Linear
Technology LTC2974, LTC2977, LTC2978, LTC3880, LTC3883, LTM4676
and LTM4686.
If you say yes here you get regulator support for Linear Technology
LTC3880, LTC3883, LTC3884, LTC3886, LTC3887, LTC3889, LTC7880,
LTM4644, LTM4675, LTM4676, LTM4677, LTM4678, LTM4680, LTM4686,
and LTM4700.
config SENSORS_LTC3815
tristate "Linear Technologies LTC3815"

94
drivers/hwmon/pmbus/ltc2978.c
View File

@ -19,8 +19,15 @@
#include <linux/regulator/driver.h>
#include "pmbus.h"
enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
ltc3883, ltc3886, ltc3887, ltm2987, ltm4675, ltm4676, ltm4686 };
enum chips {
/* Managers */
ltc2972, ltc2974, ltc2975, ltc2977, ltc2978, ltc2979, ltc2980,
/* Controllers */
ltc3880, ltc3882, ltc3883, ltc3884, ltc3886, ltc3887, ltc3889, ltc7880,
/* Modules */
ltm2987, ltm4664, ltm4675, ltm4676, ltm4677, ltm4678, ltm4680, ltm4686,
ltm4700,
};
/* Common for all chips */
#define LTC2978_MFR_VOUT_PEAK 0xdd
@ -43,9 +50,10 @@ enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
#define LTC3880_MFR_CLEAR_PEAKS 0xe3
#define LTC3880_MFR_TEMPERATURE2_PEAK 0xf4
/* LTC3883 and LTC3886 only */
/* LTC3883, LTC3884, LTC3886, LTC3889 and LTC7880 only */
#define LTC3883_MFR_IIN_PEAK 0xe1
/* LTC2975 only */
#define LTC2975_MFR_IIN_PEAK 0xc4
#define LTC2975_MFR_IIN_MIN 0xc5
@ -54,27 +62,41 @@ enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
#define LTC2978_ID_MASK 0xfff0
#define LTC2972_ID 0x0310
#define LTC2974_ID 0x0210
#define LTC2975_ID 0x0220
#define LTC2977_ID 0x0130
#define LTC2978_ID_REV1 0x0110 /* Early revision */
#define LTC2978_ID_REV2 0x0120
#define LTC2979_ID_A 0x8060
#define LTC2979_ID_B 0x8070
#define LTC2980_ID_A 0x8030 /* A/B for two die IDs */
#define LTC2980_ID_B 0x8040
#define LTC3880_ID 0x4020
#define LTC3882_ID 0x4200
#define LTC3882_ID_D1 0x4240 /* Dash 1 */
#define LTC3883_ID 0x4300
#define LTC3884_ID 0x4C00
#define LTC3886_ID 0x4600
#define LTC3887_ID 0x4700
#define LTM2987_ID_A 0x8010 /* A/B for two die IDs */
#define LTM2987_ID_B 0x8020
#define LTC3889_ID 0x4900
#define LTC7880_ID 0x49E0
#define LTM4664_ID 0x4120
#define LTM4675_ID 0x47a0
#define LTM4676_ID_REV1 0x4400
#define LTM4676_ID_REV2 0x4480
#define LTM4676A_ID 0x47e0
#define LTM4677_ID_REV1 0x47B0
#define LTM4677_ID_REV2 0x47D0
#define LTM4678_ID_REV1 0x4100
#define LTM4678_ID_REV2 0x4110
#define LTM4680_ID 0x4140
#define LTM4686_ID 0x4770
#define LTM4700_ID 0x4130
#define LTC2972_NUM_PAGES 2
#define LTC2974_NUM_PAGES 4
#define LTC2978_NUM_PAGES 8
#define LTC3880_NUM_PAGES 2
@ -492,20 +514,30 @@ static int ltc2978_write_word_data(struct i2c_client *client, int page,
}
static const struct i2c_device_id ltc2978_id[] = {
{"ltc2972", ltc2972},
{"ltc2974", ltc2974},
{"ltc2975", ltc2975},
{"ltc2977", ltc2977},
{"ltc2978", ltc2978},
{"ltc2979", ltc2979},
{"ltc2980", ltc2980},
{"ltc3880", ltc3880},
{"ltc3882", ltc3882},
{"ltc3883", ltc3883},
{"ltc3884", ltc3884},
{"ltc3886", ltc3886},
{"ltc3887", ltc3887},
{"ltc3889", ltc3889},
{"ltc7880", ltc7880},
{"ltm2987", ltm2987},
{"ltm4664", ltm4664},
{"ltm4675", ltm4675},
{"ltm4676", ltm4676},
{"ltm4677", ltm4677},
{"ltm4678", ltm4678},
{"ltm4680", ltm4680},
{"ltm4686", ltm4686},
{"ltm4700", ltm4700},
{}
};
MODULE_DEVICE_TABLE(i2c, ltc2978_id);
@ -555,7 +587,9 @@ static int ltc2978_get_id(struct i2c_client *client)
chip_id &= LTC2978_ID_MASK;
if (chip_id == LTC2974_ID)
if (chip_id == LTC2972_ID)
return ltc2972;
else if (chip_id == LTC2974_ID)
return ltc2974;
else if (chip_id == LTC2975_ID)
return ltc2975;
@ -563,6 +597,8 @@ static int ltc2978_get_id(struct i2c_client *client)
return ltc2977;
else if (chip_id == LTC2978_ID_REV1 || chip_id == LTC2978_ID_REV2)
return ltc2978;
else if (chip_id == LTC2979_ID_A || chip_id == LTC2979_ID_B)
return ltc2979;
else if (chip_id == LTC2980_ID_A || chip_id == LTC2980_ID_B)
return ltc2980;
else if (chip_id == LTC3880_ID)
@ -571,19 +607,35 @@ static int ltc2978_get_id(struct i2c_client *client)
return ltc3882;
else if (chip_id == LTC3883_ID)
return ltc3883;
else if (chip_id == LTC3884_ID)
return ltc3884;
else if (chip_id == LTC3886_ID)
return ltc3886;
else if (chip_id == LTC3887_ID)
return ltc3887;
else if (chip_id == LTC3889_ID)
return ltc3889;
else if (chip_id == LTC7880_ID)
return ltc7880;
else if (chip_id == LTM2987_ID_A || chip_id == LTM2987_ID_B)
return ltm2987;
else if (chip_id == LTM4664_ID)
return ltm4664;
else if (chip_id == LTM4675_ID)
return ltm4675;
else if (chip_id == LTM4676_ID_REV1 || chip_id == LTM4676_ID_REV2 ||
chip_id == LTM4676A_ID)
return ltm4676;
else if (chip_id == LTM4677_ID_REV1 || chip_id == LTM4677_ID_REV2)
return ltm4677;
else if (chip_id == LTM4678_ID_REV1 || chip_id == LTM4678_ID_REV2)
return ltm4678;
else if (chip_id == LTM4680_ID)
return ltm4680;
else if (chip_id == LTM4686_ID)
return ltm4686;
else if (chip_id == LTM4700_ID)
return ltm4700;
dev_err(&client->dev, "Unsupported chip ID 0x%x\n", chip_id);
return -ENODEV;
@ -637,6 +689,19 @@ static int ltc2978_probe(struct i2c_client *client,
data->temp2_max = 0x7c00;
switch (data->id) {
case ltc2972:
info->read_word_data = ltc2975_read_word_data;
info->pages = LTC2972_NUM_PAGES;
info->func[0] = PMBUS_HAVE_IIN | PMBUS_HAVE_PIN
| PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT
| PMBUS_HAVE_TEMP2;
for (i = 0; i < info->pages; i++) {
info->func[i] |= PMBUS_HAVE_VOUT
| PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_POUT
| PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT;
}
break;
case ltc2974:
info->read_word_data = ltc2974_read_word_data;
info->pages = LTC2974_NUM_PAGES;
@ -662,8 +727,10 @@ static int ltc2978_probe(struct i2c_client *client,
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT;
}
break;
case ltc2977:
case ltc2978:
case ltc2979:
case ltc2980:
case ltm2987:
info->read_word_data = ltc2978_read_word_data;
@ -680,6 +747,7 @@ static int ltc2978_probe(struct i2c_client *client,
case ltc3887:
case ltm4675:
case ltm4676:
case ltm4677:
case ltm4686:
data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;
info->read_word_data = ltc3880_read_word_data;
@ -721,7 +789,14 @@ static int ltc2978_probe(struct i2c_client *client,
| PMBUS_HAVE_PIN | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP
| PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP;
break;
case ltc3884:
case ltc3886:
case ltc3889:
case ltc7880:
case ltm4664:
case ltm4678:
case ltm4680:
case ltm4700:
data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;
info->read_word_data = ltc3883_read_word_data;
info->pages = LTC3880_NUM_PAGES;
@ -752,22 +827,33 @@ static int ltc2978_probe(struct i2c_client *client,
return pmbus_do_probe(client, id, info);
}
#ifdef CONFIG_OF
static const struct of_device_id ltc2978_of_match[] = {
{ .compatible = "lltc,ltc2972" },
{ .compatible = "lltc,ltc2974" },
{ .compatible = "lltc,ltc2975" },
{ .compatible = "lltc,ltc2977" },
{ .compatible = "lltc,ltc2978" },
{ .compatible = "lltc,ltc2979" },
{ .compatible = "lltc,ltc2980" },
{ .compatible = "lltc,ltc3880" },
{ .compatible = "lltc,ltc3882" },
{ .compatible = "lltc,ltc3883" },
{ .compatible = "lltc,ltc3884" },
{ .compatible = "lltc,ltc3886" },
{ .compatible = "lltc,ltc3887" },
{ .compatible = "lltc,ltc3889" },
{ .compatible = "lltc,ltc7880" },
{ .compatible = "lltc,ltm2987" },
{ .compatible = "lltc,ltm4664" },
{ .compatible = "lltc,ltm4675" },
{ .compatible = "lltc,ltm4676" },
{ .compatible = "lltc,ltm4677" },
{ .compatible = "lltc,ltm4678" },
{ .compatible = "lltc,ltm4680" },
{ .compatible = "lltc,ltm4686" },
{ .compatible = "lltc,ltm4700" },
{ }
};
MODULE_DEVICE_TABLE(of, ltc2978_of_match);