[PATCH 1/4 v2] iio: hid-sensors: respect CONFIG_IIO_TRIGGER

[Alexander Holler <holler@ahsoftware.de>]

Not much to say, without that change, hid-sensor-trigger will be
always compiled if HID_SENSOR_IIO_COMMON is selected which fails if
CONFIG_IIO_TRIGGER is not set because CONFIG_IIO_CONSUMERS_PER_TRIGGER
will not be defined.

Signed-off-by: Alexander Holler <holler@ahsoftware.de>
---
 drivers/iio/accel/Kconfig               |    1 +
 drivers/iio/common/hid-sensors/Kconfig  |   13 ++++++++++++-
 drivers/iio/common/hid-sensors/Makefile |    3 ++-
 drivers/iio/gyro/Kconfig                |    1 +
 drivers/iio/light/Kconfig               |    1 +
 drivers/iio/magnetometer/Kconfig        |    1 +
 6 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index b2510c4..b84b806 100644
--- a/drivers/iio/accel/Kconfig
+++ b/drivers/iio/accel/Kconfig
@@ -8,6 +8,7 @@ config HID_SENSOR_ACCEL_3D
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
 	select HID_SENSOR_IIO_COMMON
+	select HID_SENSOR_IIO_TRIGGER
 	tristate "HID Acelerometers 3D"
 	help
 	  Say yes here to build support for the HID SENSOR
diff --git a/drivers/iio/common/hid-sensors/Kconfig b/drivers/iio/common/hid-sensors/Kconfig
index 8e63d81..e294f31 100644
--- a/drivers/iio/common/hid-sensors/Kconfig
+++ b/drivers/iio/common/hid-sensors/Kconfig
@@ -6,7 +6,7 @@ menu "Hid Sensor IIO Common"
 config HID_SENSOR_IIO_COMMON
 	tristate "Common modules for all HID Sensor IIO drivers"
 	depends on HID_SENSOR_HUB
-	select IIO_TRIGGER if IIO_BUFFER
+	select HID_SENSOR_IIO_TRIGGER if IIO_BUFFER
 	help
 	  Say yes here to build support for HID sensor to use
 	  HID sensor common processing for attributes and IIO triggers.
@@ -14,6 +14,17 @@ config HID_SENSOR_IIO_COMMON
 	  HID sensor drivers, this module contains processing for those
 	  attributes.
 
+config HID_SENSOR_IIO_TRIGGER
+	tristate "Common module (trigger) for all HID Sensor IIO drivers"
+	depends on HID_SENSOR_HUB && HID_SENSOR_IIO_COMMON
+	select IIO_TRIGGER
+	help
+	  Say yes here to build trigger support for HID sensors.
+	  Triggers will be send if all requested attributes were read.
+
+	  If this driver is compiled as a module, it will be named
+	  hid-sensor-trigger.
+
 config HID_SENSOR_ENUM_BASE_QUIRKS
 	tristate "ENUM base quirks for HID Sensor IIO drivers"
 	depends on HID_SENSOR_IIO_COMMON
diff --git a/drivers/iio/common/hid-sensors/Makefile b/drivers/iio/common/hid-sensors/Makefile
index 1f463e0..22e7c5a 100644
--- a/drivers/iio/common/hid-sensors/Makefile
+++ b/drivers/iio/common/hid-sensors/Makefile
@@ -3,4 +3,5 @@
 #
 
 obj-$(CONFIG_HID_SENSOR_IIO_COMMON) += hid-sensor-iio-common.o
-hid-sensor-iio-common-y := hid-sensor-attributes.o hid-sensor-trigger.o
+obj-$(CONFIG_HID_SENSOR_IIO_TRIGGER) += hid-sensor-trigger.o
+hid-sensor-iio-common-y := hid-sensor-attributes.o
diff --git a/drivers/iio/gyro/Kconfig b/drivers/iio/gyro/Kconfig
index 21e27e2..bc9daff 100644
--- a/drivers/iio/gyro/Kconfig
+++ b/drivers/iio/gyro/Kconfig
@@ -8,6 +8,7 @@ config HID_SENSOR_GYRO_3D
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
 	select HID_SENSOR_IIO_COMMON
+	select HID_SENSOR_IIO_TRIGGER
 	tristate "HID Gyroscope 3D"
 	help
 	  Say yes here to build support for the HID SENSOR
diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig
index 1763c9b..dbf80ab 100644
--- a/drivers/iio/light/Kconfig
+++ b/drivers/iio/light/Kconfig
@@ -47,6 +47,7 @@ config HID_SENSOR_ALS
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
 	select HID_SENSOR_IIO_COMMON
+	select HID_SENSOR_IIO_TRIGGER
 	tristate "HID ALS"
 	help
 	  Say yes here to build support for the HID SENSOR
diff --git a/drivers/iio/magnetometer/Kconfig b/drivers/iio/magnetometer/Kconfig
index c1f0cdd..ff11d68 100644
--- a/drivers/iio/magnetometer/Kconfig
+++ b/drivers/iio/magnetometer/Kconfig
@@ -8,6 +8,7 @@ config HID_SENSOR_MAGNETOMETER_3D
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
 	select HID_SENSOR_IIO_COMMON
+	select HID_SENSOR_IIO_TRIGGER
 	tristate "HID Magenetometer 3D"
 	help
 	  Say yes here to build support for the HID SENSOR
-- 
1.7.8.6