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-rw-r--r--src/include/device/i2c.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/src/include/device/i2c.h b/src/include/device/i2c.h
index 78817bb300..8e59ba7c21 100644
--- a/src/include/device/i2c.h
+++ b/src/include/device/i2c.h
@@ -88,6 +88,28 @@ static inline int i2c_write_raw(unsigned bus, uint8_t chip, uint8_t *data,
}
/**
+ * Read multi-bytes with two segments in one frame
+ *
+ * [start][slave addr][w][register addr][start][slave addr][r][data...][stop]
+ */
+static inline int i2c_read_bytes(unsigned bus, uint8_t chip, uint8_t reg,
+ uint8_t *data, int len)
+{
+ struct i2c_seg seg[2];
+
+ seg[0].read = 0;
+ seg[0].chip = chip;
+ seg[0].buf = ®
+ seg[0].len = 1;
+ seg[1].read = 1;
+ seg[1].chip = chip;
+ seg[1].buf = data;
+ seg[1].len = len;
+
+ return i2c_transfer(bus, seg, ARRAY_SIZE(seg));
+}
+
+/**
* Read a byte with two segments in one frame
*
* [start][slave addr][w][register addr][start][slave addr][r][data][stop]