diff options
| author | Kent Gibson <warthog618@gmail.com> | 2020-09-28 08:27:52 +0800 |
|---|---|---|
| committer | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2020-09-30 10:56:42 +0200 |
| commit | d143493c01b7fc3a9b9369a795e20329561222c5 (patch) | |
| tree | a775840c49b5364aed598090f582003a706741db /drivers/gpio/Kconfig | |
| parent | b53911aa872db462be2e5f1dd611b25c4c2e663b (diff) | |
| download | linux-d143493c01b7fc3a9b9369a795e20329561222c5.tar.gz linux-d143493c01b7fc3a9b9369a795e20329561222c5.tar.bz2 linux-d143493c01b7fc3a9b9369a795e20329561222c5.zip | |
gpiolib: make cdev a build option
Make the gpiolib-cdev module a build option. This allows the CDEV
interface to be removed from the kernel to reduce kernel size in
applications where is it not required, and provides the parent for
other CDEV interface specific build options to follow.
Suggested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Kent Gibson <warthog618@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/gpio/Kconfig')
| -rw-r--r-- | drivers/gpio/Kconfig | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index c7292a50aec4..cbf8a60dec03 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -66,8 +66,21 @@ config GPIO_SYSFS This ABI is deprecated. If you want to use GPIO from userspace, use the character device /dev/gpiochipN with the appropriate - ioctl() operations instead. The character device is always - available. + ioctl() operations instead. + +config GPIO_CDEV + bool + prompt "Character device (/dev/gpiochipN) support" if EXPERT + default y + help + Say Y here to add the character device /dev/gpiochipN interface + for GPIOs. The character device allows userspace to control GPIOs + using ioctl() operations. + + Only say N if you are sure that the GPIO character device is not + required. + + If unsure, say Y. config GPIO_GENERIC depends on HAS_IOMEM # Only for IOMEM drivers |