[PATCH v4 12/18] [media] si2168: convert to use an explicit i2c mux core

From: Peter Rosin <peda@lysator.liu.se>
To: linux-kernel@vger.kernel.org
Cc: Peter Rosin <peda@axentia.se>, Wolfram Sang <wsa@the-dreams.de>,
	Peter Korsgaard <peter.korsgaard@barco.com>,
	Guenter Roeck <linux@roeck-us.net>,
	Jonathan Cameron <jic23@kernel.org>,
	Hartmut Knaack <knaack.h@gmx.de>,
	Lars-Peter Clausen <lars@metafoo.de>,
	Peter Meerwald <pmeerw@pmeerw.net>,
	Antti Palosaari <crope@iki.fi>,
	Mauro Carvalho Chehab <mchehab@osg.samsung.com>,
	Rob Herring <robh+dt@kernel.org>,
	Frank Rowand <frowand.list@gmail.com>,
	Grant Likely <grant.likely@linaro.org>,
	Adriana Reus <adriana.reus@intel.com>,
	Viorel Suman <viorel.suman@intel.com>,
	Krzysztof Kozlowski <k.kozlowski@samsung.com>,
	Terry Heo <terryheo@google.com>,
	Hans Verkuil <hans.verkuil@cisco.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Tommi Rantala <tt.rantala@gmail.com>,
	linux-i2c@vger.kernel.org, linux-iio@vger.kernel.org,
	linux-media@vger.kernel.org, devicetree@vger.kernel.org,
	Peter Rosin <peda@lysator.liu.se>
Subject: [PATCH v4 12/18] [media] si2168: convert to use an explicit i2c mux core
Date: Thu,  3 Mar 2016 23:27:24 +0100	[thread overview]
Message-ID: <1457044050-15230-13-git-send-email-peda@lysator.liu.se> (raw)
In-Reply-To: <1457044050-15230-1-git-send-email-peda@lysator.liu.se>

From: Peter Rosin <peda@axentia.se>

Allocate an explicit i2c mux core to handle parent and child adapters
etc. Update the select/deselect ops to be in terms of the i2c mux core
instead of the child adapter.

Signed-off-by: Peter Rosin <peda@axentia.se>
---
 drivers/media/dvb-frontends/si2168.c      | 22 ++++++++++++----------
 drivers/media/dvb-frontends/si2168_priv.h |  2 +-
 2 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c
index 821a8f481507..ca455d01c71d 100644
--- a/drivers/media/dvb-frontends/si2168.c
+++ b/drivers/media/dvb-frontends/si2168.c
@@ -615,9 +615,9 @@ static int si2168_get_tune_settings(struct dvb_frontend *fe,
  * We must use unlocked I2C I/O because I2C adapter lock is already taken
  * by the caller (usually tuner driver).
  */
-static int si2168_select(struct i2c_adapter *adap, void *mux_priv, u32 chan)
+static int si2168_select(struct i2c_mux_core *muxc, u32 chan)
 {
-	struct i2c_client *client = mux_priv;
+	struct i2c_client *client = i2c_mux_priv(muxc);
 	int ret;
 	struct si2168_cmd cmd;
 
@@ -635,9 +635,9 @@ err:
 	return ret;
 }
 
-static int si2168_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan)
+static int si2168_deselect(struct i2c_mux_core *muxc, u32 chan)
 {
-	struct i2c_client *client = mux_priv;
+	struct i2c_client *client = i2c_mux_priv(muxc);
 	int ret;
 	struct si2168_cmd cmd;
 
@@ -709,17 +709,19 @@ static int si2168_probe(struct i2c_client *client,
 	}
 
 	/* create mux i2c adapter for tuner */
-	dev->adapter = i2c_add_mux_adapter(client->adapter, &client->dev,
-			client, 0, 0, 0, si2168_select, si2168_deselect);
-	if (dev->adapter == NULL) {
-		ret = -ENODEV;
+	dev->muxc = i2c_mux_one_adapter(client->adapter, &client->dev, 0, 0,
+					0, 0, 0,
+					si2168_select, si2168_deselect);
+	if (IS_ERR(dev->muxc)) {
+		ret = PTR_ERR(dev->muxc);
 		goto err_kfree;
 	}
+	dev->muxc->priv = client;
 
 	/* create dvb_frontend */
 	memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));
 	dev->fe.demodulator_priv = client;
-	*config->i2c_adapter = dev->adapter;
+	*config->i2c_adapter = dev->muxc->adapter[0];
 	*config->fe = &dev->fe;
 	dev->ts_mode = config->ts_mode;
 	dev->ts_clock_inv = config->ts_clock_inv;
@@ -743,7 +745,7 @@ static int si2168_remove(struct i2c_client *client)
 
 	dev_dbg(&client->dev, "\n");
 
-	i2c_del_mux_adapter(dev->adapter);
+	i2c_mux_del_adapters(dev->muxc);
 
 	dev->fe.ops.release = NULL;
 	dev->fe.demodulator_priv = NULL;
diff --git a/drivers/media/dvb-frontends/si2168_priv.h b/drivers/media/dvb-frontends/si2168_priv.h
index c07e6fe2cb10..165bf1412063 100644
--- a/drivers/media/dvb-frontends/si2168_priv.h
+++ b/drivers/media/dvb-frontends/si2168_priv.h
@@ -29,7 +29,7 @@
 
 /* state struct */
 struct si2168_dev {
-	struct i2c_adapter *adapter;
+	struct i2c_mux_core *muxc;
 	struct dvb_frontend fe;
 	enum fe_delivery_system delivery_system;
 	enum fe_status fe_status;
-- 
2.1.4
