From: Linus Walleij Date: Thu, 22 Oct 2015 07:58:34 +0000 (+0200) Subject: gpio: ABI: mark the sysfs ABI as obsolete X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=fe95046e960b4b76e73dc1486955d93f47276134;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git gpio: ABI: mark the sysfs ABI as obsolete This marks the (optional) sysfs GPIO ABI as obsolete and schedules it for removal in 2020. Cc: Johan Hovold Cc: Michael Welling Cc: Markus Pargmann Signed-off-by: Linus Walleij --- diff --git a/Documentation/ABI/obsolete/sysfs-gpio b/Documentation/ABI/obsolete/sysfs-gpio new file mode 100644 index 000000000000..867c1fab20e2 --- /dev/null +++ b/Documentation/ABI/obsolete/sysfs-gpio @@ -0,0 +1,30 @@ +What: /sys/class/gpio/ +Date: July 2008 +KernelVersion: 2.6.27 +Contact: Linus Walleij +Description: + + As a Kconfig option, individual GPIO signals may be accessed from + userspace. GPIOs are only made available to userspace by an explicit + "export" operation. If a given GPIO is not claimed for use by + kernel code, it may be exported by userspace (and unexported later). + Kernel code may export it for complete or partial access. + + GPIOs are identified as they are inside the kernel, using integers in + the range 0..INT_MAX. See Documentation/gpio.txt for more information. + + /sys/class/gpio + /export ... asks the kernel to export a GPIO to userspace + /unexport ... to return a GPIO to the kernel + /gpioN ... for each exported GPIO #N OR + / ... for a properly named GPIO line + /value ... always readable, writes fail for input GPIOs + /direction ... r/w as: in, out (default low); write: high, low + /edge ... r/w as: none, falling, rising, both + /gpiochipN ... for each gpiochip; #N is its first GPIO + /base ... (r/o) same as N + /label ... (r/o) descriptive, not necessarily unique + /ngpio ... (r/o) number of GPIOs; numbered N to N + (ngpio - 1) + + This ABI is deprecated and will be removed after 2020. It is + replaced with the GPIO character device. diff --git a/Documentation/ABI/testing/sysfs-gpio b/Documentation/ABI/testing/sysfs-gpio deleted file mode 100644 index 55ffa2df1c10..000000000000 --- a/Documentation/ABI/testing/sysfs-gpio +++ /dev/null @@ -1,28 +0,0 @@ -What: /sys/class/gpio/ -Date: July 2008 -KernelVersion: 2.6.27 -Contact: David Brownell -Description: - - As a Kconfig option, individual GPIO signals may be accessed from - userspace. GPIOs are only made available to userspace by an explicit - "export" operation. If a given GPIO is not claimed for use by - kernel code, it may be exported by userspace (and unexported later). - Kernel code may export it for complete or partial access. - - GPIOs are identified as they are inside the kernel, using integers in - the range 0..INT_MAX. See Documentation/gpio.txt for more information. - - /sys/class/gpio - /export ... asks the kernel to export a GPIO to userspace - /unexport ... to return a GPIO to the kernel - /gpioN ... for each exported GPIO #N OR - / ... for a properly named GPIO line - /value ... always readable, writes fail for input GPIOs - /direction ... r/w as: in, out (default low); write: high, low - /edge ... r/w as: none, falling, rising, both - /gpiochipN ... for each gpiochip; #N is its first GPIO - /base ... (r/o) same as N - /label ... (r/o) descriptive, not necessarily unique - /ngpio ... (r/o) number of GPIOs; numbered N to N + (ngpio - 1) - diff --git a/MAINTAINERS b/MAINTAINERS index a85cd6dcb5de..7df638be28e2 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4816,6 +4816,7 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git S: Maintained F: Documentation/gpio/ F: Documentation/ABI/testing/gpio-cdev +F: Documentation/ABI/obsolete/sysfs-gpio F: drivers/gpio/ F: include/linux/gpio/ F: include/linux/gpio.h