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hwmon: (ltc2978) Add support for LTM4675

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LTM2975 is a dual 9A or single 18A μModule regulator.
It is register compatible with LTM4676.

Signed-off-by: Guenter Roeck <[email protected]>
This commit is contained in:
Guenter Roeck 2015-08-17 20:08:09 -07:00
commit ccf2dc51bc
3 changed files with 25 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

2
drivers/hwmon/pmbus/Kconfig
View file

@ -53,7 +53,7 @@ config SENSORS_LTC2978
help
If you say yes here you get hardware monitoring support for Linear
Technology LTC2974, LTC2975, LTC2977, LTC2978, LTC2980, LTC3880,
LTC3883, LTC3886, LTC3887, LTCM2987, and LTM4676.
LTC3883, LTC3886, LTC3887, LTCM2987, LTM4675, and LTM4676.
This driver can also be built as a module. If so, the module will
be called ltc2978.

10
drivers/hwmon/pmbus/ltc2978.c
View file

@ -28,7 +28,7 @@
#include "pmbus.h"
enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
ltc3883, ltc3886, ltc3887, ltm2987, ltm4676 };
ltc3883, ltc3886, ltc3887, ltm2987, ltm4675, ltm4676 };
/* Common for all chips */
#define LTC2978_MFR_VOUT_PEAK 0xdd
@ -46,7 +46,7 @@ enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
#define LTC2974_MFR_IOUT_PEAK 0xd7
#define LTC2974_MFR_IOUT_MIN 0xd8
/* LTC3880, LTC3882, LTC3883, LTC3887, and LTM4676 */
/* LTC3880, LTC3882, LTC3883, LTC3887, LTM4675, and LTM4676 */
#define LTC3880_MFR_IOUT_PEAK 0xd7
#define LTC3880_MFR_CLEAR_PEAKS 0xe3
#define LTC3880_MFR_TEMPERATURE2_PEAK 0xf4
@ -77,6 +77,7 @@ enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
#define LTC3887_ID 0x4700
#define LTM2987_ID_A 0x8010 /* A/B for two die IDs */
#define LTM2987_ID_B 0x8020
#define LTM4675_ID 0x47a0
#define LTM4676_ID_REV1 0x4400
#define LTM4676_ID_REV2 0x4480
#define LTM4676A_ID 0x47e0
@ -509,6 +510,7 @@ static const struct i2c_device_id ltc2978_id[] = {
{"ltc3886", ltc3886},
{"ltc3887", ltc3887},
{"ltm2987", ltm2987},
{"ltm4675", ltm4675},
{"ltm4676", ltm4676},
{}
};
@ -581,6 +583,8 @@ static int ltc2978_get_id(struct i2c_client *client)
return ltc3887;
else if (chip_id == LTM2987_ID_A || chip_id == LTM2987_ID_B)
return ltm2987;
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;
@ -678,6 +682,7 @@ static int ltc2978_probe(struct i2c_client *client,
break;
case ltc3880:
case ltc3887:
case ltm4675:
case ltm4676:
data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;
info->read_word_data = ltc3880_read_word_data;
@ -763,6 +768,7 @@ static const struct of_device_id ltc2978_of_match[] = {
{ .compatible = "lltc,ltc3886" },
{ .compatible = "lltc,ltc3887" },
{ .compatible = "lltc,ltm2987" },
{ .compatible = "lltc,ltm4675" },
{ .compatible = "lltc,ltm4676" },
{ }
};