[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Wed, 5 May 2021 12:39:48 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Bence Csókás <bence98@....bme.hu>,
Wolfram Sang <wsa@...nel.org>, Sasha Levin <sashal@...nel.org>,
linux-i2c@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 16/32] i2c: Add I2C_AQ_NO_REP_START adapter quirk
From: Bence Csókás <bence98@....bme.hu>
[ Upstream commit aca01415e076aa96cca0f801f4420ee5c10c660d ]
This quirk signifies that the adapter cannot do a repeated
START, it always issues a STOP condition after transfers.
Suggested-by: Wolfram Sang <wsa@...nel.org>
Signed-off-by: Bence Csókás <bence98@....bme.hu>
Signed-off-by: Wolfram Sang <wsa@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
include/linux/i2c.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 7e748648c7d3..6fda0458745d 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -662,6 +662,8 @@ struct i2c_adapter_quirks {
#define I2C_AQ_NO_ZERO_LEN_READ BIT(5)
#define I2C_AQ_NO_ZERO_LEN_WRITE BIT(6)
#define I2C_AQ_NO_ZERO_LEN (I2C_AQ_NO_ZERO_LEN_READ | I2C_AQ_NO_ZERO_LEN_WRITE)
+/* adapter cannot do repeated START */
+#define I2C_AQ_NO_REP_START BIT(7)
/*
* i2c_adapter is the structure used to identify a physical i2c bus along
--
2.30.2
Powered by blists - more mailing lists