diff options
Diffstat (limited to 'src/soc/amd/common/acpi/gpio_bank_lib.asl')
| -rw-r--r-- | src/soc/amd/common/acpi/gpio_bank_lib.asl | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/soc/amd/common/acpi/gpio_bank_lib.asl b/src/soc/amd/common/acpi/gpio_bank_lib.asl index f209f448c1..8640cc114d 100644 --- a/src/soc/amd/common/acpi/gpio_bank_lib.asl +++ b/src/soc/amd/common/acpi/gpio_bank_lib.asl @@ -2,6 +2,8 @@ #include <soc/iomap.h> +#define GPIO_INPUT_SHIFT 16 +#define GPIO_INPUT_VALUE (1 << GPIO_INPUT_SHIFT) #define GPIO_OUTPUT_SHIFT 22 #define GPIO_OUTPUT_VALUE (1 << GPIO_OUTPUT_SHIFT) @@ -148,3 +150,35 @@ Method (CTXS, 1, Serialized) } VAL0 &= ~GPIO_OUTPUT_VALUE } + +/* + * Get GPIO Input Value + * Arg0 - GPIO Number + */ +Method (GRXS, 1, Serialized) +{ + OperationRegion (GPDW, SystemMemory, GPAD (Arg0), 4) + Field (GPDW, AnyAcc, NoLock, Preserve) + { + VAL0, 32 + } + Local0 = (GPIO_INPUT_VALUE & VAL0) >> GPIO_INPUT_SHIFT + + Return (Local0) +} + +/* + * Get GPIO Output Value + * Arg0 - GPIO Number + */ +Method (GTXS, 1, Serialized) +{ + OperationRegion (GPDW, SystemMemory, GPAD (Arg0), 4) + Field (GPDW, AnyAcc, NoLock, Preserve) + { + VAL0, 32 + } + Local0 = (GPIO_OUTPUT_VALUE & VAL0) >> GPIO_OUTPUT_SHIFT + + Return (Local0) +} |