From a11753a89ec610768301d4070e10b8bd60fde8cd Mon Sep 17 00:00:00 2001
From: Haibo Chen <haibo.chen@nxp.com>
Date: Wed, 8 Sep 2021 18:29:50 +0800
Subject: [PATCH] LF-4558-2 input: touch: goodix: change the i2c data length to
a small one
Do not need to read quite large data through i2c bus, accroding to driver
logic, only need the first 8 byte data. So change this length to 9.
Add this change also can fix one error on imx8ulp-evk board, because the
touch is on rpmsg-i2c bus, rpmsg limitate the data size, can't be large
than 14 byte. If config a large data size, will trigger i2c error.
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Acked-by: Jason Liu <jason.hui.liu@nxp.com>
---
drivers/input/touchscreen/goodix.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c
index f304fd84bb9fbb..802430c0962846 100644
--- a/drivers/input/touchscreen/goodix.c
+++ b/drivers/input/touchscreen/goodix.c
@@ -932,7 +932,7 @@ static void goodix_read_config(struct goodix_ts_data *ts)
int error;
error = goodix_i2c_read(ts->client, ts->chip->config_addr,
- ts->config, ts->chip->config_len);
+ ts->config, 9);
if (error) {
dev_warn(&ts->client->dev, "Error reading config: %d\n",
error);
--
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