From a5ec171efdc6151d3a51c4e1a59abb3ab9d8b710 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 12 Jan 2023 15:39:42 +0200 Subject: 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 Acked-by: Geert Uytterhoeven Signed-off-by: Bartosz Golaszewski --- Documentation/driver-api/gpio/legacy.rst | 8 -------- 1 file changed, 8 deletions(-) (limited to 'Documentation/driver-api') diff --git a/Documentation/driver-api/gpio/legacy.rst b/Documentation/driver-api/gpio/legacy.rst index e3e9d26a60ce..a0559d93efd1 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 ---------------------------- -- cgit v1.2.3