sravan/system76-coreboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

x86/acpi_device: Add support for GPIO output polarity

Browse Source 
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)
This commit is contained in:
Furquan Shaikh
2016-10-04 10:53:32 -07:00
committed by Martin Roth
parent 35c01bc4e0
commit 028200f75f
5 changed files with 21 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
src/drivers/generic/max98357a/max98357a.c
View File

@@ -55,7 +55,8 @@ static void max98357a_fill_ssdt(struct device *dev)
/* 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);