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hwmon: (pmbus/lm25066) Add support for LM25063
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck
parent
84fb029faa
commit
c8ccab7ab5
@ -8,6 +8,11 @@ Supported chips:
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Datasheets:
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http://www.ti.com/lit/gpn/lm25056
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http://www.ti.com/lit/gpn/lm25056a
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* TI LM25063
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Prefix: 'lm25063'
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Addresses scanned: -
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Datasheet:
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To be announced
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* National Semiconductor LM25066
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Prefix: 'lm25066'
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Addresses scanned: -
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@ -32,7 +37,7 @@ Description
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-----------
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This driver supports hardware montoring for National Semiconductor / TI LM25056,
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LM25066, LM5064, and LM5064 Power Management, Monitoring, Control, and
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LM25063, LM25066, LM5064, and LM5066 Power Management, Monitoring, Control, and
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Protection ICs.
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The driver is a client driver to the core PMBus driver. Please see
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@ -64,8 +69,12 @@ in1_input Measured input voltage.
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in1_average Average measured input voltage.
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in1_min Minimum input voltage.
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in1_max Maximum input voltage.
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in1_crit Critical high input voltage (LM25063 only).
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in1_lcrit Critical low input voltage (LM25063 only).
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in1_min_alarm Input voltage low alarm.
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in1_max_alarm Input voltage high alarm.
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in1_lcrit_alarm Input voltage critical low alarm (LM25063 only).
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in1_crit_alarm Input voltage critical high alarm. (LM25063 only).
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in2_label "vmon"
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in2_input Measured voltage on VAUX pin
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@ -80,12 +89,16 @@ in3_input Measured output voltage.
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in3_average Average measured output voltage.
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in3_min Minimum output voltage.
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in3_min_alarm Output voltage low alarm.
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in3_highest Historical minimum output voltage (LM25063 only).
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in3_lowest Historical maximum output voltage (LM25063 only).
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curr1_label "iin"
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curr1_input Measured input current.
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curr1_average Average measured input current.
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curr1_max Maximum input current.
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curr1_crit Critical input current (LM25063 only).
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curr1_max_alarm Input current high alarm.
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curr1_crit_alarm Input current critical high alarm (LM25063 only).
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power1_label "pin"
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power1_input Measured input power.
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@ -95,6 +108,11 @@ power1_alarm Input power alarm
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power1_input_highest Historical maximum power.
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power1_reset_history Write any value to reset maximum power history.
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power2_label "pout". LM25063 only.
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power2_input Measured output power.
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power2_max Maximum output power limit.
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power2_crit Critical output power limit.
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temp1_input Measured temperature.
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temp1_max Maximum temperature.
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temp1_crit Critical high temperature.
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@ -1,5 +1,5 @@
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/*
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* Hardware monitoring driver for LM25056 / LM25066 / LM5064 / LM5066
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* Hardware monitoring driver for LM25056 / LM25063 / LM25066 / LM5064 / LM5066
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*
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* Copyright (c) 2011 Ericsson AB.
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* Copyright (c) 2013 Guenter Roeck
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@ -27,7 +27,7 @@
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#include <linux/i2c.h>
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#include "pmbus.h"
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enum chips { lm25056, lm25066, lm5064, lm5066 };
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enum chips { lm25056, lm25063, lm25066, lm5064, lm5066 };
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#define LM25066_READ_VAUX 0xd0
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#define LM25066_MFR_READ_IIN 0xd1
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@ -52,6 +52,11 @@ enum chips { lm25056, lm25066, lm5064, lm5066 };
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#define LM25056_MFR_STS_VAUX_OV_WARN (1 << 1)
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#define LM25056_MFR_STS_VAUX_UV_WARN (1 << 0)
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/* LM25063 only */
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#define LM25063_READ_VOUT_MAX 0xe5
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#define LM25063_READ_VOUT_MIN 0xe6
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struct __coeff {
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short m, b, R;
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};
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@ -59,7 +64,7 @@ struct __coeff {
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#define PSC_CURRENT_IN_L (PSC_NUM_CLASSES)
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#define PSC_POWER_L (PSC_NUM_CLASSES + 1)
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static struct __coeff lm25066_coeff[4][PSC_NUM_CLASSES + 2] = {
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static struct __coeff lm25066_coeff[5][PSC_NUM_CLASSES + 2] = {
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[lm25056] = {
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[PSC_VOLTAGE_IN] = {
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.m = 16296,
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@ -116,6 +121,36 @@ static struct __coeff lm25066_coeff[4][PSC_NUM_CLASSES + 2] = {
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.m = 16,
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},
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},
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[lm25063] = {
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[PSC_VOLTAGE_IN] = {
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.m = 16000,
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.R = -2,
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},
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[PSC_VOLTAGE_OUT] = {
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.m = 16000,
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.R = -2,
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},
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[PSC_CURRENT_IN] = {
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.m = 10000,
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.R = -2,
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},
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[PSC_CURRENT_IN_L] = {
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.m = 10000,
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.R = -2,
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},
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[PSC_POWER] = {
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.m = 5000,
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.R = -3,
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},
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[PSC_POWER_L] = {
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.m = 5000,
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.R = -3,
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},
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[PSC_TEMPERATURE] = {
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.m = 15596,
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.R = -3,
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},
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},
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[lm5064] = {
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[PSC_VOLTAGE_IN] = {
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.m = 4611,
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@ -178,6 +213,7 @@ static struct __coeff lm25066_coeff[4][PSC_NUM_CLASSES + 2] = {
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struct lm25066_data {
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int id;
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u16 rlimit; /* Maximum register value */
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struct pmbus_driver_info info;
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};
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@ -200,6 +236,10 @@ static int lm25066_read_word_data(struct i2c_client *client, int page, int reg)
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/* VIN: 6.14 mV VAUX: 293 uV LSB */
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ret = DIV_ROUND_CLOSEST(ret * 293, 6140);
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break;
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case lm25063:
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/* VIN: 6.25 mV VAUX: 200.0 uV LSB */
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ret = DIV_ROUND_CLOSEST(ret * 20, 625);
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break;
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case lm25066:
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/* VIN: 4.54 mV VAUX: 283.2 uV LSB */
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ret = DIV_ROUND_CLOSEST(ret * 2832, 45400);
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@ -253,6 +293,24 @@ static int lm25066_read_word_data(struct i2c_client *client, int page, int reg)
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return ret;
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}
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static int lm25063_read_word_data(struct i2c_client *client, int page, int reg)
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{
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int ret;
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switch (reg) {
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case PMBUS_VIRT_READ_VOUT_MAX:
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ret = pmbus_read_word_data(client, 0, LM25063_READ_VOUT_MAX);
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break;
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case PMBUS_VIRT_READ_VOUT_MIN:
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ret = pmbus_read_word_data(client, 0, LM25063_READ_VOUT_MIN);
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break;
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default:
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ret = lm25066_read_word_data(client, page, reg);
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break;
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}
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return ret;
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}
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static int lm25056_read_word_data(struct i2c_client *client, int page, int reg)
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{
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int ret;
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@ -308,27 +366,34 @@ static int lm25056_read_byte_data(struct i2c_client *client, int page, int reg)
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static int lm25066_write_word_data(struct i2c_client *client, int page, int reg,
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u16 word)
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{
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const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
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const struct lm25066_data *data = to_lm25066_data(info);
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int ret;
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switch (reg) {
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case PMBUS_POUT_OP_FAULT_LIMIT:
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case PMBUS_POUT_OP_WARN_LIMIT:
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case PMBUS_VOUT_UV_WARN_LIMIT:
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case PMBUS_OT_FAULT_LIMIT:
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case PMBUS_OT_WARN_LIMIT:
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case PMBUS_IIN_OC_FAULT_LIMIT:
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case PMBUS_VIN_UV_WARN_LIMIT:
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case PMBUS_VIN_UV_FAULT_LIMIT:
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case PMBUS_VIN_OV_FAULT_LIMIT:
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case PMBUS_VIN_OV_WARN_LIMIT:
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word = ((s16)word < 0) ? 0 : clamp_val(word, 0, 0x0fff);
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word = ((s16)word < 0) ? 0 : clamp_val(word, 0, data->rlimit);
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ret = pmbus_write_word_data(client, 0, reg, word);
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pmbus_clear_cache(client);
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break;
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case PMBUS_IIN_OC_WARN_LIMIT:
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word = ((s16)word < 0) ? 0 : clamp_val(word, 0, 0x0fff);
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word = ((s16)word < 0) ? 0 : clamp_val(word, 0, data->rlimit);
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ret = pmbus_write_word_data(client, 0,
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LM25066_MFR_IIN_OC_WARN_LIMIT,
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word);
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pmbus_clear_cache(client);
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break;
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case PMBUS_PIN_OP_WARN_LIMIT:
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word = ((s16)word < 0) ? 0 : clamp_val(word, 0, 0x0fff);
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word = ((s16)word < 0) ? 0 : clamp_val(word, 0, data->rlimit);
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ret = pmbus_write_word_data(client, 0,
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LM25066_MFR_PIN_OP_WARN_LIMIT,
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word);
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@ -337,7 +402,7 @@ static int lm25066_write_word_data(struct i2c_client *client, int page, int reg,
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case PMBUS_VIRT_VMON_UV_WARN_LIMIT:
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/* Adjust from VIN coefficients (for LM25056) */
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word = DIV_ROUND_CLOSEST((int)word * 6140, 293);
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word = ((s16)word < 0) ? 0 : clamp_val(word, 0, 0x0fff);
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word = ((s16)word < 0) ? 0 : clamp_val(word, 0, data->rlimit);
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ret = pmbus_write_word_data(client, 0,
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LM25056_VAUX_UV_WARN_LIMIT, word);
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pmbus_clear_cache(client);
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@ -345,7 +410,7 @@ static int lm25066_write_word_data(struct i2c_client *client, int page, int reg,
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case PMBUS_VIRT_VMON_OV_WARN_LIMIT:
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/* Adjust from VIN coefficients (for LM25056) */
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word = DIV_ROUND_CLOSEST((int)word * 6140, 293);
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word = ((s16)word < 0) ? 0 : clamp_val(word, 0, 0x0fff);
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word = ((s16)word < 0) ? 0 : clamp_val(word, 0, data->rlimit);
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ret = pmbus_write_word_data(client, 0,
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LM25056_VAUX_OV_WARN_LIMIT, word);
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pmbus_clear_cache(client);
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@ -399,9 +464,16 @@ static int lm25066_probe(struct i2c_client *client,
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info->func[0] |= PMBUS_HAVE_STATUS_VMON;
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info->read_word_data = lm25056_read_word_data;
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info->read_byte_data = lm25056_read_byte_data;
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data->rlimit = 0x0fff;
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} else if (data->id == lm25063) {
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info->func[0] |= PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_POUT;
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info->read_word_data = lm25063_read_word_data;
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data->rlimit = 0xffff;
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} else {
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info->func[0] |= PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
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info->read_word_data = lm25066_read_word_data;
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data->rlimit = 0x0fff;
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}
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info->write_word_data = lm25066_write_word_data;
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@ -432,6 +504,7 @@ static int lm25066_probe(struct i2c_client *client,
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static const struct i2c_device_id lm25066_id[] = {
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{"lm25056", lm25056},
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{"lm25063", lm25063},
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{"lm25066", lm25066},
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{"lm5064", lm5064},
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{"lm5066", lm5066},
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@ -453,5 +526,5 @@ static struct i2c_driver lm25066_driver = {
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module_i2c_driver(lm25066_driver);
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MODULE_AUTHOR("Guenter Roeck");
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MODULE_DESCRIPTION("PMBus driver for LM25056/LM25066/LM5064/LM5066");
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MODULE_DESCRIPTION("PMBus driver for LM25066 and compatible chips");
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MODULE_LICENSE("GPL");
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