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Date: Fri, 22 Apr 2016 13:37:12 +0200
From: Peter Rosin <peda@...ntia.se>
To: <linux-kernel@...r.kernel.org>
CC: Peter Rosin <peda@...ntia.se>, Wolfram Sang <wsa@...-dreams.de>,
Jonathan Corbet <corbet@....net>,
Peter Korsgaard <peter.korsgaard@...co.com>,
Guenter Roeck <linux@...ck-us.net>,
Jonathan Cameron <jic23@...nel.org>,
Hartmut Knaack <knaack.h@....de>,
Lars-Peter Clausen <lars@...afoo.de>,
Peter Meerwald <pmeerw@...erw.net>,
Antti Palosaari <crope@....fi>,
Mauro Carvalho Chehab <mchehab@....samsung.com>,
Rob Herring <robh+dt@...nel.org>,
Frank Rowand <frowand.list@...il.com>,
Grant Likely <grant.likely@...aro.org>,
Andrew Morton <akpm@...ux-foundation.org>,
"David S. Miller" <davem@...emloft.net>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Kalle Valo <kvalo@...eaurora.org>,
Jiri Slaby <jslaby@...e.com>,
Daniel Baluta <daniel.baluta@...el.com>,
Lucas De Marchi <lucas.demarchi@...el.com>,
Adriana Reus <adriana.reus@...el.com>,
Matt Ranostay <matt.ranostay@...el.com>,
Krzysztof Kozlowski <k.kozlowski@...sung.com>,
Hans Verkuil <hans.verkuil@...co.com>,
Terry Heo <terryheo@...gle.com>, Arnd Bergmann <arnd@...db.de>,
Tommi Rantala <tt.rantala@...il.com>,
Crestez Dan Leonard <leonard.crestez@...el.com>,
<linux-i2c@...r.kernel.org>, <linux-doc@...r.kernel.org>,
<linux-iio@...r.kernel.org>, <linux-media@...r.kernel.org>,
<devicetree@...r.kernel.org>, Peter Rosin <peda@...ator.liu.se>
Subject: [PATCH v8 08/24] iio: imu: inv_mpu6050: convert to use an explicit i2c mux core
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.
Acked-by: Jonathan Cameron <jic23@...nel.org>
Signed-off-by: Peter Rosin <peda@...ntia.se>
---
drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c | 2 +-
drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 1 -
drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c | 33 +++++++++++++++---------------
drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h | 3 ++-
4 files changed, 19 insertions(+), 20 deletions(-)
v8 compared to v7:
- Do not change i2c_get_clientdata() into dev_get_drvdata()
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c
index 2771106fd650..f62b8bd9ad7e 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c
@@ -183,7 +183,7 @@ int inv_mpu_acpi_create_mux_client(struct i2c_client *client)
} else
return 0; /* no secondary addr, which is OK */
}
- st->mux_client = i2c_new_device(st->mux_adapter, &info);
+ st->mux_client = i2c_new_device(st->muxc->adapter[0], &info);
if (!st->mux_client)
return -ENODEV;
}
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
index d192953e9a38..0c2bded2b5b7 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
@@ -23,7 +23,6 @@
#include <linux/kfifo.h>
#include <linux/spinlock.h>
#include <linux/iio/iio.h>
-#include <linux/i2c-mux.h>
#include <linux/acpi.h>
#include "inv_mpu_iio.h"
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
index f581256d9d4c..3a078df84224 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
@@ -15,7 +15,6 @@
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/i2c.h>
-#include <linux/i2c-mux.h>
#include <linux/iio/iio.h>
#include <linux/module.h>
#include "inv_mpu_iio.h"
@@ -52,10 +51,9 @@ static int inv_mpu6050_write_reg_unlocked(struct i2c_client *client,
return 0;
}
-static int inv_mpu6050_select_bypass(struct i2c_adapter *adap, void *mux_priv,
- u32 chan_id)
+static int inv_mpu6050_select_bypass(struct i2c_mux_core *muxc, u32 chan_id)
{
- struct i2c_client *client = mux_priv;
+ struct i2c_client *client = i2c_mux_priv(muxc);
struct iio_dev *indio_dev = dev_get_drvdata(&client->dev);
struct inv_mpu6050_state *st = iio_priv(indio_dev);
int ret = 0;
@@ -84,10 +82,9 @@ write_error:
return ret;
}
-static int inv_mpu6050_deselect_bypass(struct i2c_adapter *adap,
- void *mux_priv, u32 chan_id)
+static int inv_mpu6050_deselect_bypass(struct i2c_mux_core *muxc, u32 chan_id)
{
- struct i2c_client *client = mux_priv;
+ struct i2c_client *client = i2c_mux_priv(muxc);
struct iio_dev *indio_dev = dev_get_drvdata(&client->dev);
struct inv_mpu6050_state *st = iio_priv(indio_dev);
@@ -136,16 +133,18 @@ static int inv_mpu_probe(struct i2c_client *client,
return result;
st = iio_priv(dev_get_drvdata(&client->dev));
- st->mux_adapter = i2c_add_mux_adapter(client->adapter,
- &client->dev,
- client,
- 0, 0, 0,
- inv_mpu6050_select_bypass,
- inv_mpu6050_deselect_bypass);
- if (!st->mux_adapter) {
- result = -ENODEV;
+ st->muxc = i2c_mux_alloc(client->adapter, &client->dev,
+ 1, 0, 0,
+ inv_mpu6050_select_bypass,
+ inv_mpu6050_deselect_bypass);
+ if (!st->muxc) {
+ result = -ENOMEM;
goto out_unreg_device;
}
+ st->muxc->priv = dev_get_drvdata(&client->dev);
+ result = i2c_mux_add_adapter(st->muxc, 0, 0, 0);
+ if (result)
+ goto out_unreg_device;
result = inv_mpu_acpi_create_mux_client(client);
if (result)
@@ -154,7 +153,7 @@ static int inv_mpu_probe(struct i2c_client *client,
return 0;
out_del_mux:
- i2c_del_mux_adapter(st->mux_adapter);
+ i2c_mux_del_adapters(st->muxc);
out_unreg_device:
inv_mpu_core_remove(&client->dev);
return result;
@@ -166,7 +165,7 @@ static int inv_mpu_remove(struct i2c_client *client)
struct inv_mpu6050_state *st = iio_priv(indio_dev);
inv_mpu_acpi_delete_mux_client(client);
- i2c_del_mux_adapter(st->mux_adapter);
+ i2c_mux_del_adapters(st->muxc);
return inv_mpu_core_remove(&client->dev);
}
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
index e302a49703bf..bb3cef6d7059 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
@@ -11,6 +11,7 @@
* GNU General Public License for more details.
*/
#include <linux/i2c.h>
+#include <linux/i2c-mux.h>
#include <linux/kfifo.h>
#include <linux/spinlock.h>
#include <linux/iio/iio.h>
@@ -127,7 +128,7 @@ struct inv_mpu6050_state {
const struct inv_mpu6050_hw *hw;
enum inv_devices chip_type;
spinlock_t time_stamp_lock;
- struct i2c_adapter *mux_adapter;
+ struct i2c_mux_core *muxc;
struct i2c_client *mux_client;
unsigned int powerup_count;
struct inv_mpu6050_platform_data plat_data;
--
2.1.4
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