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authorPeter Rosin <peda@axentia.se>2016-04-20 08:40:49 +0200
committerWolfram Sang <wsa@the-dreams.de>2016-04-22 15:00:05 +0200
commit51f97f6dd73d9349f8e6a1d36ac5f7371d275fb3 (patch)
tree465e4f2fbbbffe07736f19e55a9c7b7b087dd6b2 /drivers/iio/imu
parent193304aef8523265884f08144b1f98ad272e2d7e (diff)
downloadlinux-51f97f6dd73d9349f8e6a1d36ac5f7371d275fb3.tar.bz2
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@kernel.org> Tested-by: Crestez Dan Leonard <leonard.crestez@intel.com> Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/iio/imu')
-rw-r--r--drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c2
-rw-r--r--drivers/iio/imu/inv_mpu6050/inv_mpu_core.c1
-rw-r--r--drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c33
-rw-r--r--drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h3
4 files changed, 19 insertions, 20 deletions
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;