From 2e63c2a566a143b31777fb2ead6a2c8d5b76ebeb Mon Sep 17 00:00:00 2001 From: Duncan Laurie Date: Mon, 16 May 2016 15:32:30 -0700 Subject: [PATCH] apollolake: Add handler for finding ACPI path for GPIO 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. Change-Id: I596c178b7813ac6aaeb4f2685bb916f5b78e049b Signed-off-by: Duncan Laurie Reviewed-on: https://review.coreboot.org/14859 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/soc/intel/apollolake/gpio.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/src/soc/intel/apollolake/gpio.c b/src/soc/intel/apollolake/gpio.c index 06db8c965a..d0ef6482da 100644 --- a/src/soc/intel/apollolake/gpio.c +++ b/src/soc/intel/apollolake/gpio.c @@ -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; +}