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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2023-01-12 15:39:42 +0200 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2023-01-30 15:55:29 +0100 |
| commit | a5ec171efdc6151d3a51c4e1a59abb3ab9d8b710 (patch) | |
| tree | 34c2decc74b958375d87c37c330e90e74eba9bbe /Documentation/driver-api | |
| parent | 029d14e900e7766eb2330bd4912dc28c0466db06 (diff) | |
| download | linux-a5ec171efdc6151d3a51c4e1a59abb3ab9d8b710.tar.gz | |
gpio: Remove unused and obsoleted irq_to_gpio()
irq_to_gpio() is legacy and unused API, remove it for good.
This leaves gpio_to_irq() as it's used yet in many places.
Nevertheless, removal of its counterpart is a good signal
to whoever even trying to consider using them that do not.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'Documentation/driver-api')
| -rw-r--r-- | Documentation/driver-api/gpio/legacy.rst | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/Documentation/driver-api/gpio/legacy.rst b/Documentation/driver-api/gpio/legacy.rst index e3e9d26a60ce5..a0559d93efd15 100644 --- a/Documentation/driver-api/gpio/legacy.rst +++ b/Documentation/driver-api/gpio/legacy.rst @@ -387,9 +387,6 @@ map between them using calls like:: /* map GPIO numbers to IRQ numbers */ int gpio_to_irq(unsigned gpio); - /* map IRQ numbers to GPIO numbers (avoid using this) */ - int irq_to_gpio(unsigned irq); - Those return either the corresponding number in the other namespace, or else a negative errno code if the mapping can't be done. (For example, some GPIOs can't be used as IRQs.) It is an unchecked error to use a GPIO @@ -405,11 +402,6 @@ devices, by the board-specific initialization code. Note that IRQ trigger options are part of the IRQ interface, e.g. IRQF_TRIGGER_FALLING, as are system wakeup capabilities. -Non-error values returned from irq_to_gpio() would most commonly be used -with gpio_get_value(), for example to initialize or update driver state -when the IRQ is edge-triggered. Note that some platforms don't support -this reverse mapping, so you should avoid using it. - Emulating Open Drain Signals ---------------------------- |