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authorGuenter Roeck <linux@roeck-us.net>2015-08-18 06:08:09 +0300
committerGuenter Roeck <linux@roeck-us.net>2015-08-19 19:08:55 +0300
commitccf2dc51bc4a715670641aa5af0d4636acd8e0cd (patch)
tree65f3c46b2607f33b2cff9ffea0773252d66fb083 /drivers/hwmon/pmbus
parente04d1ce9bbb49862fd8266da764f5ebf67baaac0 (diff)
downloadlinux-ccf2dc51bc4a715670641aa5af0d4636acd8e0cd.tar.xz
hwmon: (ltc2978) Add support for LTM4675
LTM2975 is a dual 9A or single 18A μModule regulator. It is register compatible with LTM4676. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/pmbus')
-rw-r--r--drivers/hwmon/pmbus/Kconfig2
-rw-r--r--drivers/hwmon/pmbus/ltc2978.c10
2 files changed, 9 insertions, 3 deletions
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index 5ebc36255c88..df6ebb2b8f0f 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -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.
diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c
index f1c69c9de849..58b789c28b48 100644
--- a/drivers/hwmon/pmbus/ltc2978.c
+++ b/drivers/hwmon/pmbus/ltc2978.c
@@ -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" },
{ }
};