x86/acpi_device: Add support for GPIO output polarity
Instead of hard-coding the polarity of the GPIO to active high/low,
accept it as a parameter in devicetree. This polarity can then be used
while calling into acpi_dp_add_gpio to determine the active low status
correctly.
BUG=chrome-os-partner:55988
BRANCH=None
TEST=Verified that correct polarity is set for reset-gpio on reef.
Change-Id: I4aba4bb8bd61799962deaaa11307c0c5be112919
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/16877
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
diff --git a/src/drivers/generic/max98357a/max98357a.c b/src/drivers/generic/max98357a/max98357a.c
index 25e5104..4a057b51 100644
--- a/src/drivers/generic/max98357a/max98357a.c
+++ b/src/drivers/generic/max98357a/max98357a.c
@@ -55,7 +55,8 @@
/* This points to the first pin in the first gpio entry in _CRS */
path = acpi_device_path(dev);
dp = acpi_dp_new_table("_DSD");
- acpi_dp_add_gpio(dp, "sdmode-gpio", path, 0, 0, 0);
+ acpi_dp_add_gpio(dp, "sdmode-gpio", path, 0, 0,
+ config->sdmode_gpio.polarity);
acpi_dp_add_integer(dp, "sdmode-delay", config->sdmode_delay);
acpi_dp_write(dp);