+#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;
+}
+