Merge branch 'master' of git://git.infradead.org/users/linville/wireless-next into...

[pandora-kernel.git] / drivers / hwmon / pmbus / max8688.c

diff --git a/drivers/hwmon/pmbus/max8688.c b/drivers/hwmon/pmbus/max8688.c
index ddc8a64..c3e72f1 100644 (file)
--- a/drivers/hwmon/pmbus/max8688.c
+++ b/drivers/hwmon/pmbus/max8688.c
@@ -25,6 +25,9 @@
 #include <linux/i2c.h>
 #include "pmbus.h"
 
+#define MAX8688_MFR_VOUT_PEAK          0xd4
+#define MAX8688_MFR_IOUT_PEAK          0xd5
+#define MAX8688_MFR_TEMPERATURE_PEAK   0xd6
 #define MAX8688_MFG_STATUS             0xd8
 
 #define MAX8688_STATUS_OC_FAULT                (1 << 4)
@@ -37,6 +40,62 @@
 #define MAX8688_STATUS_OT_FAULT                (1 << 13)
 #define MAX8688_STATUS_OT_WARNING      (1 << 14)
 
+static int max8688_read_word_data(struct i2c_client *client, int page, int reg)
+{
+       int ret;
+
+       if (page)
+               return -EINVAL;
+
+       switch (reg) {
+       case PMBUS_VIRT_READ_VOUT_MAX:
+               ret = pmbus_read_word_data(client, 0, MAX8688_MFR_VOUT_PEAK);
+               break;
+       case PMBUS_VIRT_READ_IOUT_MAX:
+               ret = pmbus_read_word_data(client, 0, MAX8688_MFR_IOUT_PEAK);
+               break;
+       case PMBUS_VIRT_READ_TEMP_MAX:
+               ret = pmbus_read_word_data(client, 0,
+                                          MAX8688_MFR_TEMPERATURE_PEAK);
+               break;
+       case PMBUS_VIRT_RESET_VOUT_HISTORY:
+       case PMBUS_VIRT_RESET_IOUT_HISTORY:
+       case PMBUS_VIRT_RESET_TEMP_HISTORY:
+               ret = 0;
+               break;
+       default:
+               ret = -ENODATA;
+               break;
+       }
+       return ret;
+}
+
+static int max8688_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, 0, MAX8688_MFR_VOUT_PEAK,
+                                           0);
+               break;
+       case PMBUS_VIRT_RESET_IOUT_HISTORY:
+               ret = pmbus_write_word_data(client, 0, MAX8688_MFR_IOUT_PEAK,
+                                           0);
+               break;
+       case PMBUS_VIRT_RESET_TEMP_HISTORY:
+               ret = pmbus_write_word_data(client, 0,
+                                           MAX8688_MFR_TEMPERATURE_PEAK,
+                                           0xffff);
+               break;
+       default:
+               ret = -ENODATA;
+               break;
+       }
+       return ret;
+}
+
 static int max8688_read_byte_data(struct i2c_client *client, int page, int reg)
 {
        int ret = 0;
@@ -111,6 +170,8 @@ static struct pmbus_driver_info max8688_info = {
                | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT
                | PMBUS_HAVE_STATUS_TEMP,
        .read_byte_data = max8688_read_byte_data,
+       .read_word_data = max8688_read_word_data,
+       .write_word_data = max8688_write_word_data,
 };
 
 static int max8688_probe(struct i2c_client *client,