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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.c130
1 files changed, 112 insertions, 18 deletions
diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c
index a91ed01abb68..7b0e6b37e247 100644
--- a/drivers/hwmon/pmbus/ltc2978.c
+++ b/drivers/hwmon/pmbus/ltc2978.c
@@ -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
@@ -151,7 +173,8 @@ static int ltc_wait_ready(struct i2c_client *client)
return -ETIMEDOUT;
}
-static int ltc_read_word_data(struct i2c_client *client, int page, int reg)
+static int ltc_read_word_data(struct i2c_client *client, int page, int phase,
+ int reg)
{
int ret;
@@ -159,7 +182,7 @@ static int ltc_read_word_data(struct i2c_client *client, int page, int reg)
if (ret < 0)
return ret;
- return pmbus_read_word_data(client, page, reg);
+ return pmbus_read_word_data(client, page, 0xff, reg);
}
static int ltc_read_byte_data(struct i2c_client *client, int page, int reg)
@@ -202,7 +225,7 @@ static int ltc_get_max(struct ltc2978_data *data, struct i2c_client *client,
{
int ret;
- ret = ltc_read_word_data(client, page, reg);
+ ret = ltc_read_word_data(client, page, 0xff, reg);
if (ret >= 0) {
if (lin11_to_val(ret) > lin11_to_val(*pmax))
*pmax = ret;
@@ -216,7 +239,7 @@ static int ltc_get_min(struct ltc2978_data *data, struct i2c_client *client,
{
int ret;
- ret = ltc_read_word_data(client, page, reg);
+ ret = ltc_read_word_data(client, page, 0xff, reg);
if (ret >= 0) {
if (lin11_to_val(ret) < lin11_to_val(*pmin))
*pmin = ret;
@@ -238,7 +261,8 @@ static int ltc2978_read_word_data_common(struct i2c_client *client, int page,
&data->vin_max);
break;
case PMBUS_VIRT_READ_VOUT_MAX:
- ret = ltc_read_word_data(client, page, LTC2978_MFR_VOUT_PEAK);
+ ret = ltc_read_word_data(client, page, 0xff,
+ LTC2978_MFR_VOUT_PEAK);
if (ret >= 0) {
/*
* VOUT is 16 bit unsigned with fixed exponent,
@@ -269,7 +293,8 @@ static int ltc2978_read_word_data_common(struct i2c_client *client, int page,
return ret;
}
-static int ltc2978_read_word_data(struct i2c_client *client, int page, int reg)
+static int ltc2978_read_word_data(struct i2c_client *client, int page,
+ int phase, int reg)
{
const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
struct ltc2978_data *data = to_ltc2978_data(info);
@@ -281,7 +306,8 @@ static int ltc2978_read_word_data(struct i2c_client *client, int page, int reg)
&data->vin_min);
break;
case PMBUS_VIRT_READ_VOUT_MIN:
- ret = ltc_read_word_data(client, page, LTC2978_MFR_VOUT_MIN);
+ ret = ltc_read_word_data(client, page, phase,
+ LTC2978_MFR_VOUT_MIN);
if (ret >= 0) {
/*
* VOUT_MIN is known to not be supported on some lots
@@ -314,7 +340,8 @@ static int ltc2978_read_word_data(struct i2c_client *client, int page, int reg)
return ret;
}
-static int ltc2974_read_word_data(struct i2c_client *client, int page, int reg)
+static int ltc2974_read_word_data(struct i2c_client *client, int page,
+ int phase, int reg)
{
const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
struct ltc2978_data *data = to_ltc2978_data(info);
@@ -333,13 +360,14 @@ static int ltc2974_read_word_data(struct i2c_client *client, int page, int reg)
ret = 0;
break;
default:
- ret = ltc2978_read_word_data(client, page, reg);
+ ret = ltc2978_read_word_data(client, page, phase, reg);
break;
}
return ret;
}
-static int ltc2975_read_word_data(struct i2c_client *client, int page, int reg)
+static int ltc2975_read_word_data(struct i2c_client *client, int page,
+ int phase, int reg)
{
const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
struct ltc2978_data *data = to_ltc2978_data(info);
@@ -367,13 +395,14 @@ static int ltc2975_read_word_data(struct i2c_client *client, int page, int reg)
ret = 0;
break;
default:
- ret = ltc2978_read_word_data(client, page, reg);
+ ret = ltc2978_read_word_data(client, page, phase, reg);
break;
}
return ret;
}
-static int ltc3880_read_word_data(struct i2c_client *client, int page, int reg)
+static int ltc3880_read_word_data(struct i2c_client *client, int page,
+ int phase, int reg)
{
const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
struct ltc2978_data *data = to_ltc2978_data(info);
@@ -405,7 +434,8 @@ static int ltc3880_read_word_data(struct i2c_client *client, int page, int reg)
return ret;
}
-static int ltc3883_read_word_data(struct i2c_client *client, int page, int reg)
+static int ltc3883_read_word_data(struct i2c_client *client, int page,
+ int phase, int reg)
{
const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
struct ltc2978_data *data = to_ltc2978_data(info);
@@ -420,7 +450,7 @@ static int ltc3883_read_word_data(struct i2c_client *client, int page, int reg)
ret = 0;
break;
default:
- ret = ltc3880_read_word_data(client, page, reg);
+ ret = ltc3880_read_word_data(client, page, phase, reg);
break;
}
return ret;
@@ -492,20 +522,30 @@ 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 +595,9 @@ 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 +605,8 @@ 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 +615,35 @@ 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 +697,19 @@ 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 +735,10 @@ 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 +755,7 @@ 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 +797,14 @@ 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 +835,33 @@ 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);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-16 07:42:51 +0300