[PATCH v2 1/5] iio: Change ISA_BUS_API dependency to selection

[William Breathitt Gray]

The ISA_BUS_API Kconfig option enables the compilation of the ISA bus
driver. The ISA bus driver does not perform any hardware interaction,
and is instead just a thin layer of software abstraction to eliminate
boilerplate code common to ISA-style device drivers. Since ISA_BUS_API
has no dependencies and does not jeopardize the integrity of the system
when enabled, drivers should select it when the ISA bus driver
functionality is needed.

Cc: Jonathan Cameron <jic23@xxxxxxxxxx>
Cc: Hartmut Knaack <knaack.h@xxxxxx>
Cc: Lars-Peter Clausen <lars@xxxxxxxxxx>
Cc: Peter Meerwald-Stadler <pmeerw@xxxxxxxxxx>
Signed-off-by: William Breathitt Gray <vilhelm.gray@xxxxxxxxx>
---
 drivers/iio/adc/Kconfig     | 3 ++-
 drivers/iio/counter/Kconfig | 3 ++-
 drivers/iio/dac/Kconfig     | 3 ++-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index ef86296b8b0d..7c00e5858693 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -658,7 +658,8 @@ config STM32_ADC
 
 config STX104
 	tristate "Apex Embedded Systems STX104 driver"
-	depends on PC104 && X86 && ISA_BUS_API
+	depends on PC104 && X86
+	select ISA_BUS_API
 	select GPIOLIB
 	help
 	  Say yes here to build support for the Apex Embedded Systems STX104
diff --git a/drivers/iio/counter/Kconfig b/drivers/iio/counter/Kconfig
index 474e1ac4e7c0..bf1e559ad7cd 100644
--- a/drivers/iio/counter/Kconfig
+++ b/drivers/iio/counter/Kconfig
@@ -7,7 +7,8 @@ menu "Counters"
 
 config 104_QUAD_8
 	tristate "ACCES 104-QUAD-8 driver"
-	depends on PC104 && X86 && ISA_BUS_API
+	depends on PC104 && X86
+	select ISA_BUS_API
 	help
 	  Say yes here to build support for the ACCES 104-QUAD-8 quadrature
 	  encoder counter/interface device family (104-QUAD-8, 104-QUAD-4).
diff --git a/drivers/iio/dac/Kconfig b/drivers/iio/dac/Kconfig
index 965d5c0d2468..76db0768e454 100644
--- a/drivers/iio/dac/Kconfig
+++ b/drivers/iio/dac/Kconfig
@@ -195,7 +195,8 @@ config AD7303
 
 config CIO_DAC
 	tristate "Measurement Computing CIO-DAC IIO driver"
-	depends on X86 && ISA_BUS_API
+	depends on X86 && (ISA_BUS || PC104)
+	select ISA_BUS_API
 	help
 	  Say yes here to build support for the Measurement Computing CIO-DAC
 	  analog output device family (CIO-DAC16, CIO-DAC08, PC104-DAC06). The
-- 
2.15.1