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drivers: gpio: nrf5: Use popcount and first_lsb_set functions

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Use the Zephyr toolchain and architecture defined popcount
and first_lsb_set functions instead of GCC specific
functions.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
This commit is contained in:
Vinayak Kariappa Chettimada 2018-03-22 13:03:48 +01:00 committed by Carles Cufí
parent 89cb10f151
commit 91a27358bd
1 changed files with 2 additions and 3 deletions
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5
drivers/gpio/gpio_nrf5.c
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@ -245,8 +245,7 @@ static int gpio_nrf5_config(struct device *dev,
/*@todo: use SENSE for this? */
return -ENOTSUP;
}
if (__builtin_popcount(gpiote_chan_mask) ==
GPIOTE_CHAN_COUNT) {
if (popcount(gpiote_chan_mask) == GPIOTE_CHAN_COUNT) {
return -EIO;
}
@ -255,7 +254,7 @@ static int gpio_nrf5_config(struct device *dev,
if (i < 0) {
/* allocate a GPIOTE channel */
i = __builtin_ffs(~gpiote_chan_mask) - 1;
i = find_lsb_set(~gpiote_chan_mask) - 1;
}
gpiote_chan_mask |= BIT(i);