summaryrefslogtreecommitdiff
path: root/drivers/hwmon/pmbus/lm25066.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/hwmon/pmbus/lm25066.c')
-rw-r--r--drivers/hwmon/pmbus/lm25066.c104
1 files changed, 79 insertions, 25 deletions
diff --git a/drivers/hwmon/pmbus/lm25066.c b/drivers/hwmon/pmbus/lm25066.c
index 9e4cf0800186..dd7275a67a0a 100644
--- a/drivers/hwmon/pmbus/lm25066.c
+++ b/drivers/hwmon/pmbus/lm25066.c
@@ -14,6 +14,7 @@
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/log2.h>
+#include <linux/of.h>
#include "pmbus.h"
enum chips { lm25056, lm25066, lm5064, lm5066, lm5066i };
@@ -51,26 +52,31 @@ struct __coeff {
#define PSC_CURRENT_IN_L (PSC_NUM_CLASSES)
#define PSC_POWER_L (PSC_NUM_CLASSES + 1)
-static struct __coeff lm25066_coeff[6][PSC_NUM_CLASSES + 2] = {
+static const struct __coeff lm25066_coeff[][PSC_NUM_CLASSES + 2] = {
[lm25056] = {
[PSC_VOLTAGE_IN] = {
.m = 16296,
+ .b = 1343,
.R = -2,
},
[PSC_CURRENT_IN] = {
.m = 13797,
+ .b = -1833,
.R = -2,
},
[PSC_CURRENT_IN_L] = {
.m = 6726,
+ .b = -537,
.R = -2,
},
[PSC_POWER] = {
.m = 5501,
+ .b = -2908,
.R = -3,
},
[PSC_POWER_L] = {
.m = 26882,
+ .b = -5646,
.R = -4,
},
[PSC_TEMPERATURE] = {
@@ -82,26 +88,32 @@ static struct __coeff lm25066_coeff[6][PSC_NUM_CLASSES + 2] = {
[lm25066] = {
[PSC_VOLTAGE_IN] = {
.m = 22070,
+ .b = -1800,
.R = -2,
},
[PSC_VOLTAGE_OUT] = {
.m = 22070,
+ .b = -1800,
.R = -2,
},
[PSC_CURRENT_IN] = {
.m = 13661,
+ .b = -5200,
.R = -2,
},
[PSC_CURRENT_IN_L] = {
- .m = 6852,
+ .m = 6854,
+ .b = -3100,
.R = -2,
},
[PSC_POWER] = {
.m = 736,
+ .b = -3300,
.R = -2,
},
[PSC_POWER_L] = {
.m = 369,
+ .b = -1900,
.R = -2,
},
[PSC_TEMPERATURE] = {
@@ -111,26 +123,32 @@ static struct __coeff lm25066_coeff[6][PSC_NUM_CLASSES + 2] = {
[lm5064] = {
[PSC_VOLTAGE_IN] = {
.m = 4611,
+ .b = -642,
.R = -2,
},
[PSC_VOLTAGE_OUT] = {
.m = 4621,
+ .b = 423,
.R = -2,
},
[PSC_CURRENT_IN] = {
.m = 10742,
+ .b = 1552,
.R = -2,
},
[PSC_CURRENT_IN_L] = {
.m = 5456,
+ .b = 2118,
.R = -2,
},
[PSC_POWER] = {
.m = 1204,
+ .b = 8524,
.R = -3,
},
[PSC_POWER_L] = {
.m = 612,
+ .b = 11202,
.R = -3,
},
[PSC_TEMPERATURE] = {
@@ -140,26 +158,32 @@ static struct __coeff lm25066_coeff[6][PSC_NUM_CLASSES + 2] = {
[lm5066] = {
[PSC_VOLTAGE_IN] = {
.m = 4587,
+ .b = -1200,
.R = -2,
},
[PSC_VOLTAGE_OUT] = {
.m = 4587,
+ .b = -2400,
.R = -2,
},
[PSC_CURRENT_IN] = {
.m = 10753,
+ .b = -1200,
.R = -2,
},
[PSC_CURRENT_IN_L] = {
.m = 5405,
+ .b = -600,
.R = -2,
},
[PSC_POWER] = {
.m = 1204,
+ .b = -6000,
.R = -3,
},
[PSC_POWER_L] = {
.m = 605,
+ .b = -8000,
.R = -3,
},
[PSC_TEMPERATURE] = {
@@ -369,21 +393,18 @@ static int lm25066_write_word_data(struct i2c_client *client, int page, int reg,
case PMBUS_VIN_OV_WARN_LIMIT:
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, 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, data->rlimit);
ret = pmbus_write_word_data(client, 0,
LM25066_MFR_PIN_OP_WARN_LIMIT,
word);
- pmbus_clear_cache(client);
break;
case PMBUS_VIRT_VMON_UV_WARN_LIMIT:
/* Adjust from VIN coefficients (for LM25056) */
@@ -391,7 +412,6 @@ static int lm25066_write_word_data(struct i2c_client *client, int page, int reg,
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);
break;
case PMBUS_VIRT_VMON_OV_WARN_LIMIT:
/* Adjust from VIN coefficients (for LM25056) */
@@ -399,7 +419,6 @@ static int lm25066_write_word_data(struct i2c_client *client, int page, int reg,
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);
break;
case PMBUS_VIRT_RESET_PIN_HISTORY:
ret = pmbus_write_byte(client, 0, LM25066_CLEAR_PIN_PEAK);
@@ -416,13 +435,39 @@ static int lm25066_write_word_data(struct i2c_client *client, int page, int reg,
return ret;
}
-static int lm25066_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+#if IS_ENABLED(CONFIG_SENSORS_LM25066_REGULATOR)
+static const struct regulator_desc lm25066_reg_desc[] = {
+ PMBUS_REGULATOR_ONE_NODE("vout"),
+};
+#endif
+
+static const struct i2c_device_id lm25066_id[] = {
+ {"lm25056", lm25056},
+ {"lm25066", lm25066},
+ {"lm5064", lm5064},
+ {"lm5066", lm5066},
+ {"lm5066i", lm5066i},
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, lm25066_id);
+
+static const struct of_device_id __maybe_unused lm25066_of_match[] = {
+ { .compatible = "ti,lm25056", .data = (void *)lm25056, },
+ { .compatible = "ti,lm25066", .data = (void *)lm25066, },
+ { .compatible = "ti,lm5064", .data = (void *)lm5064, },
+ { .compatible = "ti,lm5066", .data = (void *)lm5066, },
+ { .compatible = "ti,lm5066i", .data = (void *)lm5066i, },
+ { },
+};
+MODULE_DEVICE_TABLE(of, lm25066_of_match);
+
+static int lm25066_probe(struct i2c_client *client)
{
int config;
+ u32 shunt;
struct lm25066_data *data;
struct pmbus_driver_info *info;
- struct __coeff *coeff;
+ const struct __coeff *coeff;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_READ_BYTE_DATA))
@@ -437,7 +482,8 @@ static int lm25066_probe(struct i2c_client *client,
if (config < 0)
return config;
- data->id = id->driver_data;
+ data->id = (enum chips)(unsigned long)i2c_get_match_data(client);
+
info = &data->info;
info->pages = 1;
@@ -487,27 +533,34 @@ static int lm25066_probe(struct i2c_client *client,
info->b[PSC_POWER] = coeff[PSC_POWER].b;
}
- return pmbus_do_probe(client, id, info);
-}
-
-static const struct i2c_device_id lm25066_id[] = {
- {"lm25056", lm25056},
- {"lm25066", lm25066},
- {"lm5064", lm5064},
- {"lm5066", lm5066},
- {"lm5066i", lm5066i},
- { }
-};
+ /*
+ * Values in the TI datasheets are normalized for a 1mOhm sense
+ * resistor; assume that unless DT specifies a value explicitly.
+ */
+ if (of_property_read_u32(client->dev.of_node, "shunt-resistor-micro-ohms", &shunt))
+ shunt = 1000;
+
+ info->m[PSC_CURRENT_IN] = info->m[PSC_CURRENT_IN] * shunt / 1000;
+ info->m[PSC_POWER] = info->m[PSC_POWER] * shunt / 1000;
+
+#if IS_ENABLED(CONFIG_SENSORS_LM25066_REGULATOR)
+ /* LM25056 doesn't support OPERATION */
+ if (data->id != lm25056) {
+ info->num_regulators = ARRAY_SIZE(lm25066_reg_desc);
+ info->reg_desc = lm25066_reg_desc;
+ }
+#endif
-MODULE_DEVICE_TABLE(i2c, lm25066_id);
+ return pmbus_do_probe(client, info);
+}
/* This is the driver that will be inserted */
static struct i2c_driver lm25066_driver = {
.driver = {
.name = "lm25066",
- },
+ .of_match_table = of_match_ptr(lm25066_of_match),
+ },
.probe = lm25066_probe,
- .remove = pmbus_do_remove,
.id_table = lm25066_id,
};
@@ -516,3 +569,4 @@ module_i2c_driver(lm25066_driver);
MODULE_AUTHOR("Guenter Roeck");
MODULE_DESCRIPTION("PMBus driver for LM25066 and compatible chips");
MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("PMBUS");
generated by cgit (git 2.34.1) at 2025-12-26 10:03:29 +0000