From: Tao Lan <taolan@huawei.com>
To: <linux-i2c@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: taolan <taolan@huawei.com>
Subject: [PATCH] i2c-hix5hd2: Add I2C_M_STOP flag support for i2c-hix5hd2 driver.
Date: Fri, 30 Sep 2022 01:45:07 +0000 [thread overview]
Message-ID: <20220930014507.5612-1-taolan@huawei.com> (raw)
From: taolan <taolan@huawei.com>
For compatibility, some devices need to work with controller between
messages using a stop.
Signed-off-by: taolan <taolan@huawei.com>
---
drivers/i2c/busses/i2c-hix5hd2.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-hix5hd2.c b/drivers/i2c/busses/i2c-hix5hd2.c
index 61ae58f57047..e5042e34ecc7 100644
--- a/drivers/i2c/busses/i2c-hix5hd2.c
+++ b/drivers/i2c/busses/i2c-hix5hd2.c
@@ -360,7 +360,11 @@ static int hix5hd2_i2c_xfer(struct i2c_adapter *adap,
pm_runtime_get_sync(priv->dev);
for (i = 0; i < num; i++, msgs++) {
- stop = (i == num - 1);
+ if ((i == num - 1) || (msgs->flags & I2C_M_STOP))
+ stop = 1;
+ else
+ stop = 0;
+
ret = hix5hd2_i2c_xfer_msg(priv, msgs, stop);
if (ret < 0)
goto out;
--
2.22.0
next reply other threads:[~2022-09-30 1:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-30 1:45 Tao Lan [this message]
2023-06-10 13:54 ` [PATCH] i2c-hix5hd2: Add I2C_M_STOP flag support for i2c-hix5hd2 driver Andi Shyti
2023-06-14 8:39 ` Wolfram Sang
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