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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2023-05-30 01:14:46 +0300
committerBartosz Golaszewski <bartosz.golaszewski@linaro.org>2023-06-01 10:52:39 +0300
commit9df8c63c2b814be8c40d44d21dabaf074058c98b (patch)
tree3ca0d6a05f46672d83ba4b7934ff5fc633376cf2 /Documentation/driver-api
parent2f804aca48322f02a8f44cca540663845ee80fb1 (diff)
downloadlinux-9df8c63c2b814be8c40d44d21dabaf074058c98b.tar.xz
gpiolib: Kill unused GPIOF_OPEN_*
There is no use of the GPIOF_OPEN_* in the kernel. Kill it for good. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'Documentation/driver-api')
-rw-r--r--Documentation/driver-api/gpio/legacy.rst16
1 files changed, 0 insertions, 16 deletions
diff --git a/Documentation/driver-api/gpio/legacy.rst b/Documentation/driver-api/gpio/legacy.rst
index c5f98a78499f..9eda54811faa 100644
--- a/Documentation/driver-api/gpio/legacy.rst
+++ b/Documentation/driver-api/gpio/legacy.rst
@@ -319,8 +319,6 @@ where 'flags' is currently defined to specify the following properties:
* GPIOF_INIT_LOW - as output, set initial level to LOW
* GPIOF_INIT_HIGH - as output, set initial level to HIGH
- * GPIOF_OPEN_DRAIN - gpio pin is open drain type.
- * GPIOF_OPEN_SOURCE - gpio pin is open source type.
since GPIOF_INIT_* are only valid when configured as output, so group valid
combinations as:
@@ -329,20 +327,6 @@ combinations as:
* GPIOF_OUT_INIT_LOW - configured as output, initial level LOW
* GPIOF_OUT_INIT_HIGH - configured as output, initial level HIGH
-When setting the flag as GPIOF_OPEN_DRAIN then it will assume that pins is
-open drain type. Such pins will not be driven to 1 in output mode. It is
-require to connect pull-up on such pins. By enabling this flag, gpio lib will
-make the direction to input when it is asked to set value of 1 in output mode
-to make the pin HIGH. The pin is make to LOW by driving value 0 in output mode.
-
-When setting the flag as GPIOF_OPEN_SOURCE then it will assume that pins is
-open source type. Such pins will not be driven to 0 in output mode. It is
-require to connect pull-down on such pin. By enabling this flag, gpio lib will
-make the direction to input when it is asked to set value of 0 in output mode
-to make the pin LOW. The pin is make to HIGH by driving value 1 in output mode.
-
-In the future, these flags can be extended to support more properties.
-
Further more, to ease the claim/release of multiple GPIOs, 'struct gpio' is
introduced to encapsulate all three fields as::