[PATCH 2/7] hw/i2c: pmbus: add vout mode bitfields

[Titus Rwantare <titusr@google.com>]

The VOUT_MODE command is described in the PMBus Specification,
Part II, Ver 1.3 Section 8.3

VOUT_MODE has a three bit mode and 4 bit parameter, the three bit
mode determines whether voltages are formatted as uint16, uint16,
VID, and Direct modes. VID and Direct modes use the remaining 5 bits
to scale the voltage readings.

Reviewed-by: Hao Wu <wuhaotsh@google.com>
Signed-off-by: Titus Rwantare <titusr@google.com>
---
 include/hw/i2c/pmbus_device.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/hw/i2c/pmbus_device.h b/include/hw/i2c/pmbus_device.h
index 7dc00cc4d9..2e95164aa1 100644
--- a/include/hw/i2c/pmbus_device.h
+++ b/include/hw/i2c/pmbus_device.h
@@ -444,6 +444,14 @@ typedef struct PMBusCoefficients {
     int32_t R;     /* exponent */
 } PMBusCoefficients;
 
+/**
+ * VOUT_Mode bit fields
+ */
+typedef struct PMBusVoutMode {
+    uint8_t  mode:3;
+    int8_t   exp:5;
+} PMBusVoutMode;
+
 /**
  * Convert sensor values to direct mode format
  *
-- 
2.40.0.423.gd6c402a77b-goog