rockchip: i2c: fix >32 byte writes
The special handling of the chip address and register address must only
happen before we send the data buffer, otherwise we will end up
inserting both of these every 32 bytes.
Signed-off-by: John Keeping <john@metanate.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/i2c/rk_i2c.c b/drivers/i2c/rk_i2c.c
index a4c0032..7c701cb 100644
--- a/drivers/i2c/rk_i2c.c
+++ b/drivers/i2c/rk_i2c.c
@@ -269,9 +269,9 @@
if ((i * 4 + j) == bytes_xferred)
break;
- if (i == 0 && j == 0) {
+ if (i == 0 && j == 0 && pbuf == buf) {
txdata |= (chip << 1);
- } else if (i == 0 && j <= r_len) {
+ } else if (i == 0 && j <= r_len && pbuf == buf) {
txdata |= (reg &
(0xff << ((j - 1) * 8))) << 8;
} else {