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UPSTREAM: apollolake: Add handler for finding ACPI path for GPIO

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Add a handler for soc/intel/apollolake to return the ACPI path for
GPIOs. There are 4 GPIO "communities" on apollolake that each have a
different ACPI device so return the appropriate name for the different
communities.

BUG=None
BRANCH=None
TEST=None

Change-Id: I596c178b7813ac6aaeb4f2685bb916f5b78e049b
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://review.coreboot.org/14859
Original-Tested-by: build bot (Jenkins)
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/346993
Commit-Ready: Martin Roth <martinroth@chromium.org>
Tested-by: Martin Roth <martinroth@chromium.org>
Reviewed-by: Martin Roth <martinroth@chromium.org>
This commit is contained in:
Duncan Laurie 2016-05-16 15:32:30 -07:00 • committed by chrome-bot
commit 11a0f18dd6
1 changed files with 18 additions and 0 deletions
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18
src/soc/intel/apollolake/gpio.c
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@ -114,3 +114,21 @@ void gpio_set(gpio_t gpio_num, int value)
reg |= !!value & PAD_CFG0_TX_STATE;
iosf_write(comm->port, config_offset, reg);
}
const char *gpio_acpi_path(gpio_t gpio_num)
{
const struct pad_community *comm = gpio_get_community(gpio_num);
switch (comm->port) {
case GPIO_NORTH:
return "\\_SB.GPO0";
case GPIO_NORTHWEST:
return "\\_SB.GPO1";
case GPIO_WEST:
return "\\_SB.GPO2";
case GPIO_SOUTHWEST:
return "\\_SB.GPO3";
}
return NULL;
}