From: David Brownell Date: Tue, 24 Jul 2007 01:43:57 +0000 (-0700) Subject: minor gpio doc update X-Git-Tag: v3.12-rc1~27581 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=be1ff386e768ee4fc19bb7da48cee4fc4cb4e75b;p=kernel%2Fkernel-generic.git minor gpio doc update Fix doc bug noted by Uwe Kleine-König: gpio_set_direction() is long gone, replaced by gpio_direction_input() and gpio_direction_output(). Signed-off-by: David Brownell Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/Documentation/gpio.txt b/Documentation/gpio.txt index 218a865..6bc2ba2 100644 --- a/Documentation/gpio.txt +++ b/Documentation/gpio.txt @@ -148,7 +148,7 @@ pin ... that won't always match the specified output value, because of issues including wire-OR and output latencies. The get/set calls have no error returns because "invalid GPIO" should have -been reported earlier in gpio_set_direction(). However, note that not all +been reported earlier from gpio_direction_*(). However, note that not all platforms can read the value of output pins; those that can't should always return zero. Also, using these calls for GPIOs that can't safely be accessed without sleeping (see below) is an error. @@ -239,7 +239,7 @@ map between them using calls like: 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 used as IRQs.) It is an unchecked error to use a GPIO -number that hasn't been marked as an input using gpio_set_direction(), or +number that wasn't set up as an input using gpio_direction_input(), or to use an IRQ number that didn't originally come from gpio_to_irq(). These two mapping calls are expected to cost on the order of a single