Add support for voltage and temperature peak (historic maximum) attributes.
Signed-off-by: Guenter Roeck <guenter.roeck@xxxxxxxxxxxx>
---
v2: Updated documentation
Documentation/hwmon/max16064 | 4 +++
drivers/hwmon/pmbus/max16064.c | 51 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 55 insertions(+), 0 deletions(-)
diff --git a/Documentation/hwmon/max16064 b/Documentation/hwmon/max16064
index 4172899..f6e8bcb 100644
--- a/Documentation/hwmon/max16064
+++ b/Documentation/hwmon/max16064
@@ -50,6 +50,8 @@ in[1-4]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status.
in[1-4]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status.
in[1-4]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status.
in[1-4]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status.
+in[1-4]_highest Historical maximum voltage.
+in[1-4]_reset_history Write any value to reset history.
temp1_input Measured temperature. From READ_TEMPERATURE_1 register.
temp1_max Maximum temperature. From OT_WARN_LIMIT register.
@@ -60,3 +62,5 @@ temp1_max_alarm Chip temperature high alarm. Set by comparing
temp1_crit_alarm Chip temperature critical high alarm. Set by comparing
READ_TEMPERATURE_1 with OT_FAULT_LIMIT if TEMP_OT_FAULT
status is set.
+temp1_highest Historical maximum temperature.
+temp1_reset_history Write any value to reset history.
diff --git a/drivers/hwmon/pmbus/max16064.c b/drivers/hwmon/pmbus/max16064.c
index 78e20bc..e50b296 100644
--- a/drivers/hwmon/pmbus/max16064.c
+++ b/drivers/hwmon/pmbus/max16064.c
@@ -25,6 +25,55 @@
#include <linux/i2c.h>
#include "pmbus.h"
+#define MAX16064_MFR_VOUT_PEAK 0xd4
+#define MAX16064_MFR_TEMPERATURE_PEAK 0xd6
+
+static int max16064_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, page,
+ MAX16064_MFR_VOUT_PEAK);
+ break;
+ case PMBUS_VIRT_READ_TEMP_MAX:
+ ret = pmbus_read_word_data(client, page,
+ MAX16064_MFR_TEMPERATURE_PEAK);
+ break;
+ case PMBUS_VIRT_RESET_VOUT_HISTORY:
+ case PMBUS_VIRT_RESET_TEMP_HISTORY:
+ ret = 0;
+ break;
+ default:
+ ret = -ENODATA;
+ break;
+ }
+ return ret;
+}
+
+static int max16064_write_word_data(struct i2c_client *client, int page,
+ int reg, u16 word)
+{
+ int ret;
+
+ switch (reg) {
+ case PMBUS_VIRT_RESET_VOUT_HISTORY:
+ ret = pmbus_write_word_data(client, page,
+ MAX16064_MFR_VOUT_PEAK, 0);
+ break;
+ case PMBUS_VIRT_RESET_TEMP_HISTORY:
+ ret = pmbus_write_word_data(client, page,
+ MAX16064_MFR_TEMPERATURE_PEAK,
+ 0xffff);
+ break;
+ default:
+ ret = -ENODATA;
+ break;
+ }
+ return ret;
+}
+
static struct pmbus_driver_info max16064_info = {
.pages = 4,
.format[PSC_VOLTAGE_IN] = direct,
@@ -44,6 +93,8 @@ static struct pmbus_driver_info max16064_info = {
.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
+ .read_word_data = max16064_read_word_data,
+ .write_word_data = max16064_write_word_data,
};
static int max16064_probe(struct i2c_client *client,
--
1.7.3.1
_______________________________________________
lm-sensors mailing list
lm-sensors@xxxxxxxxxxxxxx
http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
