hwmon: (max16064) Add support for peak attributes (8ebed854) · Commits · 戴 / test

Documentation/hwmon/max16064

+4 −0

Original line number	Diff line number	Diff line
		@@ -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.

+51 −0

Original line number	Diff line number	Diff line
		@@ -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,