summaryrefslogtreecommitdiff
path: root/drivers/hwmon/pmbus
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/hwmon/pmbus')
-rw-r--r--drivers/hwmon/pmbus/lm25066.c91
-rw-r--r--drivers/hwmon/pmbus/ltc2978.c16
-rw-r--r--drivers/hwmon/pmbus/pmbus_core.c24
3 files changed, 103 insertions, 28 deletions
diff --git a/drivers/hwmon/pmbus/lm25066.c b/drivers/hwmon/pmbus/lm25066.c
index 6a9d6ed..a26b1d1 100644
--- a/drivers/hwmon/pmbus/lm25066.c
+++ b/drivers/hwmon/pmbus/lm25066.c
@@ -1,5 +1,5 @@
/*
- * Hardware monitoring driver for LM25056 / LM25066 / LM5064 / LM5066
+ * Hardware monitoring driver for LM25056 / LM25063 / LM25066 / LM5064 / LM5066
*
* Copyright (c) 2011 Ericsson AB.
* Copyright (c) 2013 Guenter Roeck
@@ -27,7 +27,7 @@
#include <linux/i2c.h>
#include "pmbus.h"
-enum chips { lm25056, lm25066, lm5064, lm5066 };
+enum chips { lm25056, lm25063, lm25066, lm5064, lm5066 };
#define LM25066_READ_VAUX 0xd0
#define LM25066_MFR_READ_IIN 0xd1
@@ -52,6 +52,11 @@ enum chips { lm25056, lm25066, lm5064, lm5066 };
#define LM25056_MFR_STS_VAUX_OV_WARN (1 << 1)
#define LM25056_MFR_STS_VAUX_UV_WARN (1 << 0)
+/* LM25063 only */
+
+#define LM25063_READ_VOUT_MAX 0xe5
+#define LM25063_READ_VOUT_MIN 0xe6
+
struct __coeff {
short m, b, R;
};
@@ -59,7 +64,7 @@ struct __coeff {
#define PSC_CURRENT_IN_L (PSC_NUM_CLASSES)
#define PSC_POWER_L (PSC_NUM_CLASSES + 1)
-static struct __coeff lm25066_coeff[4][PSC_NUM_CLASSES + 2] = {
+static struct __coeff lm25066_coeff[5][PSC_NUM_CLASSES + 2] = {
[lm25056] = {
[PSC_VOLTAGE_IN] = {
.m = 16296,
@@ -116,6 +121,36 @@ static struct __coeff lm25066_coeff[4][PSC_NUM_CLASSES + 2] = {
.m = 16,
},
},
+ [lm25063] = {
+ [PSC_VOLTAGE_IN] = {
+ .m = 16000,
+ .R = -2,
+ },
+ [PSC_VOLTAGE_OUT] = {
+ .m = 16000,
+ .R = -2,
+ },
+ [PSC_CURRENT_IN] = {
+ .m = 10000,
+ .R = -2,
+ },
+ [PSC_CURRENT_IN_L] = {
+ .m = 10000,
+ .R = -2,
+ },
+ [PSC_POWER] = {
+ .m = 5000,
+ .R = -3,
+ },
+ [PSC_POWER_L] = {
+ .m = 5000,
+ .R = -3,
+ },
+ [PSC_TEMPERATURE] = {
+ .m = 15596,
+ .R = -3,
+ },
+ },
[lm5064] = {
[PSC_VOLTAGE_IN] = {
.m = 4611,
@@ -178,6 +213,7 @@ static struct __coeff lm25066_coeff[4][PSC_NUM_CLASSES + 2] = {
struct lm25066_data {
int id;
+ u16 rlimit; /* Maximum register value */
struct pmbus_driver_info info;
};
@@ -200,6 +236,10 @@ static int lm25066_read_word_data(struct i2c_client *client, int page, int reg)
/* VIN: 6.14 mV VAUX: 293 uV LSB */
ret = DIV_ROUND_CLOSEST(ret * 293, 6140);
break;
+ case lm25063:
+ /* VIN: 6.25 mV VAUX: 200.0 uV LSB */
+ ret = DIV_ROUND_CLOSEST(ret * 20, 625);
+ break;
case lm25066:
/* VIN: 4.54 mV VAUX: 283.2 uV LSB */
ret = DIV_ROUND_CLOSEST(ret * 2832, 45400);
@@ -253,6 +293,24 @@ static int lm25066_read_word_data(struct i2c_client *client, int page, int reg)
return ret;
}
+static int lm25063_read_word_data(struct i2c_client *client, int page, int reg)
+{
+ int ret;
+
+ switch (reg) {
+ case PMBUS_VIRT_READ_VOUT_MAX:
+ ret = pmbus_read_word_data(client, 0, LM25063_READ_VOUT_MAX);
+ break;
+ case PMBUS_VIRT_READ_VOUT_MIN:
+ ret = pmbus_read_word_data(client, 0, LM25063_READ_VOUT_MIN);
+ break;
+ default:
+ ret = lm25066_read_word_data(client, page, reg);
+ break;
+ }
+ return ret;
+}
+
static int lm25056_read_word_data(struct i2c_client *client, int page, int reg)
{
int ret;
@@ -308,27 +366,34 @@ static int lm25056_read_byte_data(struct i2c_client *client, int page, int reg)
static int lm25066_write_word_data(struct i2c_client *client, int page, int reg,
u16 word)
{
+ const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
+ const struct lm25066_data *data = to_lm25066_data(info);
int ret;
switch (reg) {
+ case PMBUS_POUT_OP_FAULT_LIMIT:
+ case PMBUS_POUT_OP_WARN_LIMIT:
case PMBUS_VOUT_UV_WARN_LIMIT:
case PMBUS_OT_FAULT_LIMIT:
case PMBUS_OT_WARN_LIMIT:
+ case PMBUS_IIN_OC_FAULT_LIMIT:
case PMBUS_VIN_UV_WARN_LIMIT:
+ case PMBUS_VIN_UV_FAULT_LIMIT:
+ case PMBUS_VIN_OV_FAULT_LIMIT:
case PMBUS_VIN_OV_WARN_LIMIT:
- word = ((s16)word < 0) ? 0 : clamp_val(word, 0, 0x0fff);
+ word = ((s16)word < 0) ? 0 : clamp_val(word, 0, data->rlimit);
ret = pmbus_write_word_data(client, 0, reg, word);
pmbus_clear_cache(client);
break;
case PMBUS_IIN_OC_WARN_LIMIT:
- word = ((s16)word < 0) ? 0 : clamp_val(word, 0, 0x0fff);
+ word = ((s16)word < 0) ? 0 : clamp_val(word, 0, data->rlimit);
ret = pmbus_write_word_data(client, 0,
LM25066_MFR_IIN_OC_WARN_LIMIT,
word);
pmbus_clear_cache(client);
break;
case PMBUS_PIN_OP_WARN_LIMIT:
- word = ((s16)word < 0) ? 0 : clamp_val(word, 0, 0x0fff);
+ word = ((s16)word < 0) ? 0 : clamp_val(word, 0, data->rlimit);
ret = pmbus_write_word_data(client, 0,
LM25066_MFR_PIN_OP_WARN_LIMIT,
word);
@@ -337,7 +402,7 @@ static int lm25066_write_word_data(struct i2c_client *client, int page, int reg,
case PMBUS_VIRT_VMON_UV_WARN_LIMIT:
/* Adjust from VIN coefficients (for LM25056) */
word = DIV_ROUND_CLOSEST((int)word * 6140, 293);
- word = ((s16)word < 0) ? 0 : clamp_val(word, 0, 0x0fff);
+ word = ((s16)word < 0) ? 0 : clamp_val(word, 0, data->rlimit);
ret = pmbus_write_word_data(client, 0,
LM25056_VAUX_UV_WARN_LIMIT, word);
pmbus_clear_cache(client);
@@ -345,7 +410,7 @@ static int lm25066_write_word_data(struct i2c_client *client, int page, int reg,
case PMBUS_VIRT_VMON_OV_WARN_LIMIT:
/* Adjust from VIN coefficients (for LM25056) */
word = DIV_ROUND_CLOSEST((int)word * 6140, 293);
- word = ((s16)word < 0) ? 0 : clamp_val(word, 0, 0x0fff);
+ word = ((s16)word < 0) ? 0 : clamp_val(word, 0, data->rlimit);
ret = pmbus_write_word_data(client, 0,
LM25056_VAUX_OV_WARN_LIMIT, word);
pmbus_clear_cache(client);
@@ -399,9 +464,16 @@ static int lm25066_probe(struct i2c_client *client,
info->func[0] |= PMBUS_HAVE_STATUS_VMON;
info->read_word_data = lm25056_read_word_data;
info->read_byte_data = lm25056_read_byte_data;
+ data->rlimit = 0x0fff;
+ } else if (data->id == lm25063) {
+ info->func[0] |= PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_POUT;
+ info->read_word_data = lm25063_read_word_data;
+ data->rlimit = 0xffff;
} else {
info->func[0] |= PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
info->read_word_data = lm25066_read_word_data;
+ data->rlimit = 0x0fff;
}
info->write_word_data = lm25066_write_word_data;
@@ -432,6 +504,7 @@ static int lm25066_probe(struct i2c_client *client,
static const struct i2c_device_id lm25066_id[] = {
{"lm25056", lm25056},
+ {"lm25063", lm25063},
{"lm25066", lm25066},
{"lm5064", lm5064},
{"lm5066", lm5066},
@@ -453,5 +526,5 @@ static struct i2c_driver lm25066_driver = {
module_i2c_driver(lm25066_driver);
MODULE_AUTHOR("Guenter Roeck");
-MODULE_DESCRIPTION("PMBus driver for LM25056/LM25066/LM5064/LM5066");
+MODULE_DESCRIPTION("PMBus driver for LM25066 and compatible chips");
MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c
index 586a89e..de3c152 100644
--- a/drivers/hwmon/pmbus/ltc2978.c
+++ b/drivers/hwmon/pmbus/ltc2978.c
@@ -1,5 +1,6 @@
/*
- * Hardware monitoring driver for LTC2974, LTC2978, LTC3880, and LTC3883
+ * Hardware monitoring driver for LTC2974, LTC2977, LTC2978, LTC3880,
+ * and LTC3883
*
* Copyright (c) 2011 Ericsson AB.
* Copyright (c) 2013 Guenter Roeck
@@ -27,7 +28,7 @@
#include <linux/i2c.h>
#include "pmbus.h"
-enum chips { ltc2974, ltc2978, ltc3880, ltc3883 };
+enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 };
/* Common for all chips */
#define LTC2978_MFR_VOUT_PEAK 0xdd
@@ -35,7 +36,7 @@ enum chips { ltc2974, ltc2978, ltc3880, ltc3883 };
#define LTC2978_MFR_TEMPERATURE_PEAK 0xdf
#define LTC2978_MFR_SPECIAL_ID 0xe7
-/* LTC2974 and LTC2978 */
+/* LTC2974, LCT2977, and LTC2978 */
#define LTC2978_MFR_VOUT_MIN 0xfb
#define LTC2978_MFR_VIN_MIN 0xfc
#define LTC2978_MFR_TEMPERATURE_MIN 0xfd
@@ -53,8 +54,10 @@ enum chips { ltc2974, ltc2978, ltc3880, ltc3883 };
#define LTC3883_MFR_IIN_PEAK 0xe1
#define LTC2974_ID 0x0212
+#define LTC2977_ID 0x0130
#define LTC2978_ID_REV1 0x0121
#define LTC2978_ID_REV2 0x0122
+#define LTC2978A_ID 0x0124
#define LTC3880_ID 0x4000
#define LTC3880_ID_MASK 0xff00
#define LTC3883_ID 0x4300
@@ -363,6 +366,7 @@ static int ltc2978_write_word_data(struct i2c_client *client, int page,
static const struct i2c_device_id ltc2978_id[] = {
{"ltc2974", ltc2974},
+ {"ltc2977", ltc2977},
{"ltc2978", ltc2978},
{"ltc3880", ltc3880},
{"ltc3883", ltc3883},
@@ -392,7 +396,10 @@ static int ltc2978_probe(struct i2c_client *client,
if (chip_id == LTC2974_ID) {
data->id = ltc2974;
- } else if (chip_id == LTC2978_ID_REV1 || chip_id == LTC2978_ID_REV2) {
+ } else if (chip_id == LTC2977_ID) {
+ data->id = ltc2977;
+ } else if (chip_id == LTC2978_ID_REV1 || chip_id == LTC2978_ID_REV2 ||
+ chip_id == LTC2978A_ID) {
data->id = ltc2978;
} else if ((chip_id & LTC3880_ID_MASK) == LTC3880_ID) {
data->id = ltc3880;
@@ -438,6 +445,7 @@ static int ltc2978_probe(struct i2c_client *client,
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT;
}
break;
+ case ltc2977:
case ltc2978:
info->read_word_data = ltc2978_read_word_data;
info->pages = LTC2978_NUM_PAGES;
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index 9319fcf..3cbf66e 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -97,6 +97,7 @@ struct pmbus_data {
int max_attributes;
int num_attributes;
struct attribute_group group;
+ const struct attribute_group *groups[2];
struct pmbus_sensor *sensors;
@@ -156,7 +157,7 @@ EXPORT_SYMBOL_GPL(pmbus_write_byte);
/*
* _pmbus_write_byte() is similar to pmbus_write_byte(), but checks if
- * a device specific mapping funcion exists and calls it if necessary.
+ * a device specific mapping function exists and calls it if necessary.
*/
static int _pmbus_write_byte(struct i2c_client *client, int page, u8 value)
{
@@ -348,7 +349,7 @@ static struct _pmbus_status {
static struct pmbus_data *pmbus_update_device(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = to_i2c_client(dev->parent);
struct pmbus_data *data = i2c_get_clientdata(client);
const struct pmbus_driver_info *info = data->info;
struct pmbus_sensor *sensor;
@@ -686,7 +687,7 @@ static int pmbus_get_boolean(struct pmbus_data *data, struct pmbus_boolean *b,
if (!s1 && !s2) {
ret = !!regval;
} else if (!s1 || !s2) {
- BUG();
+ WARN(1, "Bad boolean descriptor %p: s1=%p, s2=%p\n", b, s1, s2);
return 0;
} else {
long v1, v2;
@@ -733,7 +734,7 @@ static ssize_t pmbus_set_sensor(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = to_i2c_client(dev->parent);
struct pmbus_data *data = i2c_get_clientdata(client);
struct pmbus_sensor *sensor = to_pmbus_sensor(devattr);
ssize_t rv = count;
@@ -1768,22 +1769,16 @@ int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id,
goto out_kfree;
}
- /* Register sysfs hooks */
- ret = sysfs_create_group(&dev->kobj, &data->group);
- if (ret) {
- dev_err(dev, "Failed to create sysfs entries\n");
- goto out_kfree;
- }
- data->hwmon_dev = hwmon_device_register(dev);
+ data->groups[0] = &data->group;
+ data->hwmon_dev = hwmon_device_register_with_groups(dev, client->name,
+ data, data->groups);
if (IS_ERR(data->hwmon_dev)) {
ret = PTR_ERR(data->hwmon_dev);
dev_err(dev, "Failed to register hwmon device\n");
- goto out_hwmon_device_register;
+ goto out_kfree;
}
return 0;
-out_hwmon_device_register:
- sysfs_remove_group(&dev->kobj, &data->group);
out_kfree:
kfree(data->group.attrs);
return ret;
@@ -1794,7 +1789,6 @@ int pmbus_do_remove(struct i2c_client *client)
{
struct pmbus_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &data->group);
kfree(data->group.attrs);
return 0;
}
generated by cgit v0.10.2 at 2024-08-10 14:05:09 (GMT)