[PATCH v4 1/2] iio: bmg160: Separate i2c and core driver
From: Markus Pargmann
Date: Wed Aug 19 2015 - 08:13:07 EST
This patch separates the core driver using regmap and the i2c driver
which creates the i2c regmap. Also in the Kconfig file BMG160 and
BMG160_I2C are separate now.
Signed-off-by: Markus Pargmann <mpa@xxxxxxxxxxxxxx>
---
drivers/iio/gyro/Kconfig | 15 ++++--
drivers/iio/gyro/Makefile | 3 +-
drivers/iio/gyro/bmg160.h | 10 ++++
drivers/iio/gyro/{bmg160.c => bmg160_core.c} | 79 +++++-----------------------
drivers/iio/gyro/bmg160_i2c.c | 71 +++++++++++++++++++++++++
5 files changed, 107 insertions(+), 71 deletions(-)
create mode 100644 drivers/iio/gyro/bmg160.h
rename drivers/iio/gyro/{bmg160.c => bmg160_core.c} (94%)
create mode 100644 drivers/iio/gyro/bmg160_i2c.c
diff --git a/drivers/iio/gyro/Kconfig b/drivers/iio/gyro/Kconfig
index cf82d74139a2..94526b13d49f 100644
--- a/drivers/iio/gyro/Kconfig
+++ b/drivers/iio/gyro/Kconfig
@@ -52,16 +52,21 @@ config ADXRS450
config BMG160
tristate "BOSCH BMG160 Gyro Sensor"
- depends on I2C
+ depends on (I2C || SPI_MASTER)
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
- select REGMAP_I2C
+ select BMG160_I2C if (I2C)
help
- Say yes here to build support for Bosch BMG160 Tri-axis Gyro Sensor
- driver. This driver also supports BMI055 gyroscope.
+ Say yes here to build support for BOSCH BMG160 Tri-axis Gyro Sensor
+ driver connected via I2C or SPI. This driver also supports BMI055
+ gyroscope.
This driver can also be built as a module. If so, the module
- will be called bmg160.
+ will be called bmg160_i2c.
+
+config BMG160_I2C
+ tristate
+ select REGMAP_I2C
config HID_SENSOR_GYRO_3D
depends on HID_SENSOR_HUB
diff --git a/drivers/iio/gyro/Makefile b/drivers/iio/gyro/Makefile
index f46341b39139..608401041550 100644
--- a/drivers/iio/gyro/Makefile
+++ b/drivers/iio/gyro/Makefile
@@ -8,7 +8,8 @@ obj-$(CONFIG_ADIS16130) += adis16130.o
obj-$(CONFIG_ADIS16136) += adis16136.o
obj-$(CONFIG_ADIS16260) += adis16260.o
obj-$(CONFIG_ADXRS450) += adxrs450.o
-obj-$(CONFIG_BMG160) += bmg160.o
+obj-$(CONFIG_BMG160) += bmg160_core.o
+obj-$(CONFIG_BMG160_I2C) += bmg160_i2c.o
obj-$(CONFIG_HID_SENSOR_GYRO_3D) += hid-sensor-gyro-3d.o
diff --git a/drivers/iio/gyro/bmg160.h b/drivers/iio/gyro/bmg160.h
new file mode 100644
index 000000000000..72db723c8fb6
--- /dev/null
+++ b/drivers/iio/gyro/bmg160.h
@@ -0,0 +1,10 @@
+#ifndef BMG160_H_
+#define BMG160_H_
+
+extern const struct dev_pm_ops bmg160_pm_ops;
+
+int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq,
+ const char *name);
+void bmg160_core_remove(struct device *dev);
+
+#endif /* BMG160_H_ */
diff --git a/drivers/iio/gyro/bmg160.c b/drivers/iio/gyro/bmg160_core.c
similarity index 94%
rename from drivers/iio/gyro/bmg160.c
rename to drivers/iio/gyro/bmg160_core.c
index 39df64fb4262..7366cb9f613d 100644
--- a/drivers/iio/gyro/bmg160.c
+++ b/drivers/iio/gyro/bmg160_core.c
@@ -13,7 +13,6 @@
*/
#include <linux/module.h>
-#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/slab.h>
@@ -30,7 +29,6 @@
#include <linux/iio/triggered_buffer.h>
#include <linux/regmap.h>
-#define BMG160_DRV_NAME "bmg160"
#define BMG160_IRQ_NAME "bmg160_event"
#define BMG160_GPIO_NAME "gpio_int"
@@ -137,12 +135,6 @@ static const struct {
{ 133, BMG160_RANGE_250DPS},
{ 66, BMG160_RANGE_125DPS} };
-struct regmap_config bmg160_regmap_i2c_conf = {
- .reg_bits = 8,
- .val_bits = 8,
- .max_register = 0x3f
-};
-
static int bmg160_set_mode(struct bmg160_data *data, u8 mode)
{
int ret;
@@ -996,31 +988,22 @@ static const char *bmg160_match_acpi_device(struct device *dev)
return dev_name(dev);
}
-static int bmg160_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq,
+ const char *name)
{
struct bmg160_data *data;
struct iio_dev *indio_dev;
int ret;
- const char *name = NULL;
- struct regmap *regmap;
- struct device *dev = &client->dev;
-
- regmap = devm_regmap_init_i2c(client, &bmg160_regmap_i2c_conf);
- if (IS_ERR(regmap)) {
- dev_err(&client->dev, "Failed to register i2c regmap %d\n",
- (int)PTR_ERR(regmap));
- return PTR_ERR(regmap);
- }
- indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+ indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
if (!indio_dev)
return -ENOMEM;
data = iio_priv(indio_dev);
dev_set_drvdata(dev, indio_dev);
data->dev = dev;
- data->irq = client->irq;
+ data->irq = irq;
+ data->regmap = regmap;
ret = bmg160_chip_init(data);
if (ret < 0)
@@ -1028,9 +1011,6 @@ static int bmg160_probe(struct i2c_client *client,
mutex_init(&data->mutex);
- if (id)
- name = id->name;
-
if (ACPI_HANDLE(dev))
name = bmg160_match_acpi_device(dev);
@@ -1125,15 +1105,16 @@ err_trigger_unregister:
return ret;
}
+EXPORT_SYMBOL_GPL(bmg160_core_probe);
-static int bmg160_remove(struct i2c_client *client)
+void bmg160_core_remove(struct device *dev)
{
- struct iio_dev *indio_dev = i2c_get_clientdata(client);
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct bmg160_data *data = iio_priv(indio_dev);
- pm_runtime_disable(&client->dev);
- pm_runtime_set_suspended(&client->dev);
- pm_runtime_put_noidle(&client->dev);
+ pm_runtime_disable(dev);
+ pm_runtime_set_suspended(dev);
+ pm_runtime_put_noidle(dev);
iio_device_unregister(indio_dev);
iio_triggered_buffer_cleanup(indio_dev);
@@ -1146,9 +1127,8 @@ static int bmg160_remove(struct i2c_client *client)
mutex_lock(&data->mutex);
bmg160_set_mode(data, BMG160_MODE_DEEP_SUSPEND);
mutex_unlock(&data->mutex);
-
- return 0;
}
+EXPORT_SYMBOL_GPL(bmg160_core_remove);
#ifdef CONFIG_PM_SLEEP
static int bmg160_suspend(struct device *dev)
@@ -1210,40 +1190,9 @@ static int bmg160_runtime_resume(struct device *dev)
}
#endif
-static const struct dev_pm_ops bmg160_pm_ops = {
+const struct dev_pm_ops bmg160_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(bmg160_suspend, bmg160_resume)
SET_RUNTIME_PM_OPS(bmg160_runtime_suspend,
bmg160_runtime_resume, NULL)
};
-
-static const struct acpi_device_id bmg160_acpi_match[] = {
- {"BMG0160", 0},
- {"BMI055B", 0},
- {},
-};
-
-MODULE_DEVICE_TABLE(acpi, bmg160_acpi_match);
-
-static const struct i2c_device_id bmg160_id[] = {
- {"bmg160", 0},
- {"bmi055_gyro", 0},
- {}
-};
-
-MODULE_DEVICE_TABLE(i2c, bmg160_id);
-
-static struct i2c_driver bmg160_driver = {
- .driver = {
- .name = BMG160_DRV_NAME,
- .acpi_match_table = ACPI_PTR(bmg160_acpi_match),
- .pm = &bmg160_pm_ops,
- },
- .probe = bmg160_probe,
- .remove = bmg160_remove,
- .id_table = bmg160_id,
-};
-module_i2c_driver(bmg160_driver);
-
-MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>");
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("BMG160 Gyro driver");
+EXPORT_SYMBOL_GPL(bmg160_pm_ops);
diff --git a/drivers/iio/gyro/bmg160_i2c.c b/drivers/iio/gyro/bmg160_i2c.c
new file mode 100644
index 000000000000..90126a5a7663
--- /dev/null
+++ b/drivers/iio/gyro/bmg160_i2c.c
@@ -0,0 +1,71 @@
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/iio/iio.h>
+#include <linux/module.h>
+#include <linux/acpi.h>
+
+#include "bmg160.h"
+
+static const struct regmap_config bmg160_regmap_i2c_conf = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x3f
+};
+
+static int bmg160_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct regmap *regmap;
+ const char *name = NULL;
+
+ regmap = devm_regmap_init_i2c(client, &bmg160_regmap_i2c_conf);
+ if (IS_ERR(regmap)) {
+ dev_err(&client->dev, "Failed to register i2c regmap %d\n",
+ (int)PTR_ERR(regmap));
+ return PTR_ERR(regmap);
+ }
+
+ if (id)
+ name = id->name;
+
+ return bmg160_core_probe(&client->dev, regmap, client->irq, name);
+}
+
+static int bmg160_i2c_remove(struct i2c_client *client)
+{
+ bmg160_core_remove(&client->dev);
+
+ return 0;
+}
+
+static const struct acpi_device_id bmg160_acpi_match[] = {
+ {"BMG0160", 0},
+ {"BMI055B", 0},
+ {},
+};
+
+MODULE_DEVICE_TABLE(acpi, bmg160_acpi_match);
+
+static const struct i2c_device_id bmg160_i2c_id[] = {
+ {"bmg160", 0},
+ {"bmi055_gyro", 0},
+ {}
+};
+
+MODULE_DEVICE_TABLE(i2c, bmg160_i2c_id);
+
+static struct i2c_driver bmg160_i2c_driver = {
+ .driver = {
+ .name = "bmg160_i2c",
+ .acpi_match_table = ACPI_PTR(bmg160_acpi_match),
+ .pm = &bmg160_pm_ops,
+ },
+ .probe = bmg160_i2c_probe,
+ .remove = bmg160_i2c_remove,
+ .id_table = bmg160_i2c_id,
+};
+module_i2c_driver(bmg160_i2c_driver);
+
+MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("BMG160 I2C Gyro driver");
--
2.4.6
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