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Commit c8ccab7a authored by Guenter Roeck's avatar Guenter Roeck
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hwmon: (pmbus/lm25066) Add support for LM25063 

Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 84fb029f
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Showing with 101 additions and 10 deletions
Documentation/hwmon/lm25066
View file @ c8ccab7a
......@@ -8,6 +8,11 @@ Supported chips:
Datasheets:
http://www.ti.com/lit/gpn/lm25056
http://www.ti.com/lit/gpn/lm25056a
* TI LM25063
Prefix: 'lm25063'
Addresses scanned: -
Datasheet:
To be announced
* National Semiconductor LM25066
Prefix: 'lm25066'
Addresses scanned: -
......@@ -32,7 +37,7 @@ Description
-----------
This driver supports hardware montoring for National Semiconductor / TI LM25056,
LM25066, LM5064, and LM5064 Power Management, Monitoring, Control, and
LM25063, LM25066, LM5064, and LM5066 Power Management, Monitoring, Control, and
Protection ICs.
The driver is a client driver to the core PMBus driver. Please see
......@@ -64,8 +69,12 @@ in1_input Measured input voltage.
in1_average Average measured input voltage.
in1_min Minimum input voltage.
in1_max Maximum input voltage.
in1_crit Critical high input voltage (LM25063 only).
in1_lcrit Critical low input voltage (LM25063 only).
in1_min_alarm Input voltage low alarm.
in1_max_alarm Input voltage high alarm.
in1_lcrit_alarm Input voltage critical low alarm (LM25063 only).
in1_crit_alarm Input voltage critical high alarm. (LM25063 only).
in2_label "vmon"
in2_input Measured voltage on VAUX pin
......@@ -80,12 +89,16 @@ in3_input Measured output voltage.
in3_average Average measured output voltage.
in3_min Minimum output voltage.
in3_min_alarm Output voltage low alarm.
in3_highest Historical minimum output voltage (LM25063 only).
in3_lowest Historical maximum output voltage (LM25063 only).
curr1_label "iin"
curr1_input Measured input current.
curr1_average Average measured input current.
curr1_max Maximum input current.
curr1_crit Critical input current (LM25063 only).
curr1_max_alarm Input current high alarm.
curr1_crit_alarm Input current critical high alarm (LM25063 only).
power1_label "pin"
power1_input Measured input power.
......@@ -95,6 +108,11 @@ power1_alarm Input power alarm
power1_input_highest Historical maximum power.
power1_reset_history Write any value to reset maximum power history.
power2_label "pout". LM25063 only.
power2_input Measured output power.
power2_max Maximum output power limit.
power2_crit Critical output power limit.
temp1_input Measured temperature.
temp1_max Maximum temperature.
temp1_crit Critical high temperature.
......
drivers/hwmon/pmbus/lm25066.c
View file @ c8ccab7a
/*
* 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");
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