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path: root/drivers/hwmon/pmbus/ltc2978.c
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Diffstat (limited to 'drivers/hwmon/pmbus/ltc2978.c')
-rw-r--r--drivers/hwmon/pmbus/ltc2978.c87
1 files changed, 81 insertions, 6 deletions
diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c
index 73a86f4d6472..8f5be520a15d 100644
--- a/drivers/hwmon/pmbus/ltc2978.c
+++ b/drivers/hwmon/pmbus/ltc2978.c
@@ -23,10 +23,11 @@ enum chips {
/* Managers */
ltc2972, ltc2974, ltc2975, ltc2977, ltc2978, ltc2979, ltc2980,
/* Controllers */
- ltc3880, ltc3882, ltc3883, ltc3884, ltc3886, ltc3887, ltc3889, ltc7132, ltc7880,
+ lt7170, lt7171, ltc3880, ltc3882, ltc3883, ltc3884, ltc3886, ltc3887,
+ ltc3889, ltc7132, ltc7841, ltc7880,
/* Modules */
- ltm2987, ltm4664, ltm4675, ltm4676, ltm4677, ltm4678, ltm4680, ltm4686,
- ltm4700,
+ ltm2987, ltm4664, ltm4673, ltm4675, ltm4676, ltm4677, ltm4678, ltm4680,
+ ltm4686, ltm4700,
};
/* Common for all chips */
@@ -50,7 +51,7 @@ enum chips {
#define LTC3880_MFR_CLEAR_PEAKS 0xe3
#define LTC3880_MFR_TEMPERATURE2_PEAK 0xf4
-/* LTC3883, LTC3884, LTC3886, LTC3889, LTC7132, LTC7880 */
+/* LTC3883, LTC3884, LTC3886, LTC3889, LTC7132, LTC7841 and LTC7880 only */
#define LTC3883_MFR_IIN_PEAK 0xe1
/* LTC2975 only */
@@ -61,6 +62,7 @@ enum chips {
#define LTC2978_ID_MASK 0xfff0
+#define LT7170_ID 0x1C10
#define LTC2972_ID 0x0310
#define LTC2974_ID 0x0210
#define LTC2975_ID 0x0220
@@ -80,10 +82,13 @@ enum chips {
#define LTC3887_ID 0x4700
#define LTC3889_ID 0x4900
#define LTC7132_ID 0x4CE0
+#define LTC7841_ID 0x40D0
#define LTC7880_ID 0x49E0
#define LTM2987_ID_A 0x8010 /* A/B for two die IDs */
#define LTM2987_ID_B 0x8020
#define LTM4664_ID 0x4120
+#define LTM4673_ID_REV1 0x0230
+#define LTM4673_ID 0x4480
#define LTM4675_ID 0x47a0
#define LTM4676_ID_REV1 0x4400
#define LTM4676_ID_REV2 0x4480
@@ -533,6 +538,8 @@ static int ltc2978_write_word_data(struct i2c_client *client, int page,
}
static const struct i2c_device_id ltc2978_id[] = {
+ {"lt7170", lt7170},
+ {"lt7171", lt7171},
{"ltc2972", ltc2972},
{"ltc2974", ltc2974},
{"ltc2975", ltc2975},
@@ -548,9 +555,11 @@ static const struct i2c_device_id ltc2978_id[] = {
{"ltc3887", ltc3887},
{"ltc3889", ltc3889},
{"ltc7132", ltc7132},
+ {"ltc7841", ltc7841},
{"ltc7880", ltc7880},
{"ltm2987", ltm2987},
{"ltm4664", ltm4664},
+ {"ltm4673", ltm4673},
{"ltm4675", ltm4675},
{"ltm4676", ltm4676},
{"ltm4677", ltm4677},
@@ -609,7 +618,7 @@ static int ltc2978_get_id(struct i2c_client *client)
ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, buf);
if (ret < 0)
return ret;
- if (ret < 3 || strncmp(buf, "LTC", 3))
+ if (ret < 3 || (strncmp(buf, "LTC", 3) && strncmp(buf, "ADI", 3)))
return -ENODEV;
ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, buf);
@@ -624,6 +633,25 @@ static int ltc2978_get_id(struct i2c_client *client)
chip_id &= LTC2978_ID_MASK;
+ if (chip_id == LT7170_ID) {
+ u8 buf[I2C_SMBUS_BLOCK_MAX];
+ int ret;
+
+ ret = i2c_smbus_read_i2c_block_data(client, PMBUS_IC_DEVICE_ID,
+ sizeof(buf), buf);
+ if (ret < 0)
+ return ret;
+
+ if (!strncmp(buf + 1, "LT7170", 6) ||
+ !strncmp(buf + 1, "LT7170-1", 8))
+ return lt7170;
+ if (!strncmp(buf + 1, "LT7171", 6) ||
+ !strncmp(buf + 1, "LT7171-1", 8))
+ return lt7171;
+
+ return -ENODEV;
+ }
+
if (chip_id == LTC2972_ID)
return ltc2972;
else if (chip_id == LTC2974_ID)
@@ -654,12 +682,16 @@ static int ltc2978_get_id(struct i2c_client *client)
return ltc3889;
else if (chip_id == LTC7132_ID)
return ltc7132;
+ else if (chip_id == LTC7841_ID)
+ return ltc7841;
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 == LTM4673_ID || chip_id == LTM4673_ID_REV1)
+ return ltm4673;
else if (chip_id == LTM4675_ID)
return ltm4675;
else if (chip_id == LTM4676_ID_REV1 || chip_id == LTM4676_ID_REV2 ||
@@ -731,6 +763,20 @@ static int ltc2978_probe(struct i2c_client *client)
data->temp2_max = 0x7c00;
switch (data->id) {
+ case lt7170:
+ case lt7171:
+ data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;
+ info->read_word_data = ltc3883_read_word_data;
+ info->pages = LTC3883_NUM_PAGES;
+ info->format[PSC_VOLTAGE_IN] = ieee754;
+ info->format[PSC_VOLTAGE_OUT] = ieee754;
+ info->format[PSC_CURRENT_OUT] = ieee754;
+ info->format[PSC_TEMPERATURE] = ieee754;
+ info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT
+ | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT
+ | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
+ break;
case ltc2972:
info->read_word_data = ltc2975_read_word_data;
info->pages = LTC2972_NUM_PAGES;
@@ -854,6 +900,31 @@ static int ltc2978_probe(struct i2c_client *client)
| PMBUS_HAVE_POUT
| PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
break;
+ case ltc7841:
+ data->features |= FEAT_CLEAR_PEAKS;
+ info->read_word_data = ltc3883_read_word_data;
+ info->pages = LTC3883_NUM_PAGES;
+ info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN
+ | PMBUS_HAVE_STATUS_INPUT
+ | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT
+ | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
+ break;
+ case ltm4673:
+ data->features |= FEAT_NEEDS_POLLING;
+ info->read_word_data = ltc2975_read_word_data;
+ info->pages = LTC2974_NUM_PAGES;
+ info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT
+ | PMBUS_HAVE_TEMP2;
+ for (i = 0; i < info->pages; i++) {
+ info->func[i] |= PMBUS_HAVE_IIN
+ | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT
+ | PMBUS_HAVE_PIN
+ | PMBUS_HAVE_POUT
+ | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
+ }
+ break;
default:
return -ENODEV;
}
@@ -892,6 +963,8 @@ static int ltc2978_probe(struct i2c_client *client)
#ifdef CONFIG_OF
static const struct of_device_id ltc2978_of_match[] = {
+ { .compatible = "lltc,lt7170" },
+ { .compatible = "lltc,lt7171" },
{ .compatible = "lltc,ltc2972" },
{ .compatible = "lltc,ltc2974" },
{ .compatible = "lltc,ltc2975" },
@@ -907,9 +980,11 @@ static const struct of_device_id ltc2978_of_match[] = {
{ .compatible = "lltc,ltc3887" },
{ .compatible = "lltc,ltc3889" },
{ .compatible = "lltc,ltc7132" },
+ { .compatible = "lltc,ltc7841" },
{ .compatible = "lltc,ltc7880" },
{ .compatible = "lltc,ltm2987" },
{ .compatible = "lltc,ltm4664" },
+ { .compatible = "lltc,ltm4673" },
{ .compatible = "lltc,ltm4675" },
{ .compatible = "lltc,ltm4676" },
{ .compatible = "lltc,ltm4677" },
@@ -936,4 +1011,4 @@ module_i2c_driver(ltc2978_driver);
MODULE_AUTHOR("Guenter Roeck");
MODULE_DESCRIPTION("PMBus driver for LTC2978 and compatible chips");
MODULE_LICENSE("GPL");
-MODULE_IMPORT_NS(PMBUS);
+MODULE_IMPORT_NS("PMBUS");
generated by cgit (git 2.34.1) at 2025-07-12 11:07:53 +0000