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Diffstat (limited to 'drivers/hwmon/pmbus/lm25066.c')
-rw-r--r--drivers/hwmon/pmbus/lm25066.c91
1 files changed, 82 insertions, 9 deletions
diff --git a/drivers/hwmon/pmbus/lm25066.c b/drivers/hwmon/pmbus/lm25066.c
index 6a9d6edaacb..a26b1d1d951 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");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-20 05:46:56 +0000