From 21d4b7d4e1786a2ccbcc5b304cf714e3778e6183 Mon Sep 17 00:00:00 2001
From: John Keeping <john@metanate.com>
Date: Thu, 18 Aug 2016 20:08:42 +0100
Subject: [PATCH] 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>
---
drivers/i2c/rk_i2c.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/i2c/rk_i2c.c b/drivers/i2c/rk_i2c.c
index a4c0032fd8..7c701cbed0 100644
--- a/drivers/i2c/rk_i2c.c
+++ b/drivers/i2c/rk_i2c.c
@@ -269,9 +269,9 @@ static int rk_i2c_write(struct rk_i2c *i2c, uchar chip, uint reg, uint r_len,
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 {
--
2.39.5