From: Wolfram Sang <wsa@the-dreams.de>
To: linux-i2c@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org,
Phil Reid <preid@electromag.com.au>,
Wolfram Sang <wsa+renesas@sang-engineering.com>
Subject: [PATCH v2 4/6] i2c: ensure SDA is released in recovery if SDA is controllable
Date: Tue, 9 Jan 2018 14:58:57 +0100 [thread overview]
Message-ID: <20180109135859.20771-5-wsa@the-dreams.de> (raw)
In-Reply-To: <20180109135859.20771-1-wsa@the-dreams.de>
From: Wolfram Sang <wsa+renesas@sang-engineering.com>
If we have a function to control SDA, we should ensure that SDA is not
held down by us. So, release the GPIO in this case.
Tested-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
drivers/i2c/i2c-core-base.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
index a8b3fbe16fa08c..54cef80990a11a 100644
--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -169,6 +169,8 @@ int i2c_generic_scl_recovery(struct i2c_adapter *adap)
bri->prepare_recovery(adap);
bri->set_scl(adap, val);
+ if (bri->set_sda)
+ bri->set_sda(adap, 1);
ndelay(RECOVERY_NDELAY);
/*
--
2.11.0
next prev parent reply other threads:[~2018-01-09 13:58 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-09 13:58 [PATCH v2 0/6] i2c: send STOP after recovery; use it for i2c-rcar Wolfram Sang
2018-01-09 13:58 ` [PATCH v2 1/6] i2c: make kerneldoc about bus recovery more precise Wolfram Sang
2018-01-09 13:58 ` [PATCH v2 2/6] i2c: add identifier in declarations for i2c_bus_recovery Wolfram Sang
2018-01-09 13:58 ` [PATCH v2 3/6] i2c: add 'set_sda' to bus_recovery_info Wolfram Sang
2018-01-10 13:43 ` Linus Walleij
2018-01-09 13:58 ` Wolfram Sang [this message]
2018-01-09 13:58 ` [PATCH v2 5/6] i2c: send STOP after successful bus recovery Wolfram Sang
2018-01-09 13:58 ` [PATCH v2 6/6] i2c: rcar: implement " Wolfram Sang
2018-01-15 23:08 ` [PATCH v2 0/6] i2c: send STOP after recovery; use it for i2c-rcar Wolfram Sang
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