On Sun, Feb 09, 2014 at 05:43:54PM +0900, Alexandre Courbot wrote: > Some drivers dealing with a gpio_chip might need to act on its > descriptors directly; one example is pinctrl drivers that need to lock a > GPIO for being used as IRQ using gpiod_lock_as_irq(). > > This patch exports a gpiochip_get_desc() function that returns the > GPIO descriptor at the requested index. It also sweeps the > gpio_to_chip() function out of the consumer interface since any holder > of a gpio_chip reference can manipulate its GPIOs way beyond what a > consumer should be allowed to do. > > As a result, gpio_chip is not visible anymore to simple GPIO consumers. > > Signed-off-by: Alexandre Courbot <acour...@nvidia.com> > --- > Jean-Jacques, I think you will want to use this function for locking GPIOs > in the AT91 pinctrl driver. Mika, we talked about this a while ago already, > but here it is finally. Next patch uses it in the GPIO ACPI driver.
This seems to be useful for ACPI GPIO operation region implementation as well. Reviewed-by: Mika Westerberg <mika.westerb...@linux.intel.com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
