diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2017-06-05 16:39:19 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-06-12 14:58:39 +0200 |
| commit | 97028ce6fca0fec53ee71e2fd5acfb2dc8430f1f (patch) | |
| tree | e9ae63beb8b3e3b2cbf1a07c91b31c19c4d55a76 /include/acpi | |
| parent | 2b72693066a867ac073a657e871bb64391b4ffdb (diff) | |
ACPICA: ACPI 6.2: Add support for PinConfig() resource
ACPICA commit a06fdba686cefccd5dd5b93b52fa0f1e3f984906
ACPI 6.2 introduced a new resource that is used to specify fine-grained
configuration of a pin or set of pins used by a device. The ASL syntax of
this new resource looks like:
PinConfig (Shared/Exclusive, PinConfigType, PinConfigValue,
ResourceSource, ResourceSourceIndex, ResourceUsage,
DescriptorName, Vendordata) {Pin List}
PinConfigType is an integer with following accepted values:
0x00 (Default) - No configuration is applied to the pin
0x01 (Bias Pull-up) - Pin is pulled up using certain size resistor
0x02 (Bias Pull-down) - Pin is pulled down using certain size resistor
0x03 (Bias Default) - Set to default biasing
0x04 (Bias Disable) - All bias settings will be disabled
0x05 (Bias High Impedance) - Configure the pin as hi_z
0x06 (Bias Bus Hold) - Configure the pin in a weak latch state where
it drives the last value on a tristate bus
0x07 (Drive Open Drain) - Configure the pin into open drain state
0x08 (Drive Open Source) - Configure the pin into open source state
0x09 (Drive Push Pull) - Configure the pin into push-pull state
0x0a (Drive Strength) - How much the pin can supply current
0x0b (Slew Rate) - Configure slew rate of the pin
0x0c (Input Debounce) - Enable input debouncer for the pin
0x0d (Input Schmitt Trigger) - Enable schmitt trigger for the pin
0x0e - 0x7f - Reserved
0x80 - 0xff - Vendor defined types
The PinConfigValue depends on the type and is expressed as units
suitable for that type (for example bias uses Ohms).
Link: https://github.com/acpica/acpica/commit/a06fdba6
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/acpi')
| -rw-r--r-- | include/acpi/acrestyp.h | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/include/acpi/acrestyp.h b/include/acpi/acrestyp.h index cf6996ef5db1..2b41ed163730 100644 --- a/include/acpi/acrestyp.h +++ b/include/acpi/acrestyp.h @@ -546,6 +546,36 @@ struct acpi_resource_pin_function { u8 *vendor_data; }; +struct acpi_resource_pin_config { + u8 revision_id; + u8 producer_consumer; /* For values, see Producer/Consumer above */ + u8 sharable; /* For values, see Interrupt Attributes above */ + u8 pin_config_type; + u32 pin_config_value; + u16 pin_table_length; + u16 vendor_length; + struct acpi_resource_source resource_source; + u16 *pin_table; + u8 *vendor_data; +}; + +/* Values for pin_config_type field above */ + +#define ACPI_PIN_CONFIG_DEFAULT 0 +#define ACPI_PIN_CONFIG_BIAS_PULL_UP 1 +#define ACPI_PIN_CONFIG_BIAS_PULL_DOWN 2 +#define ACPI_PIN_CONFIG_BIAS_DEFAULT 3 +#define ACPI_PIN_CONFIG_BIAS_DISABLE 4 +#define ACPI_PIN_CONFIG_BIAS_HIGH_IMPEDANCE 5 +#define ACPI_PIN_CONFIG_BIAS_BUS_HOLD 6 +#define ACPI_PIN_CONFIG_DRIVE_OPEN_DRAIN 7 +#define ACPI_PIN_CONFIG_DRIVE_OPEN_SOURCE 8 +#define ACPI_PIN_CONFIG_DRIVE_PUSH_PULL 9 +#define ACPI_PIN_CONFIG_DRIVE_STRENGTH 10 +#define ACPI_PIN_CONFIG_SLEW_RATE 11 +#define ACPI_PIN_CONFIG_INPUT_DEBOUNCE 12 +#define ACPI_PIN_CONFIG_INPUT_SCHMITT_TRIGGER 13 + /* ACPI_RESOURCE_TYPEs */ #define ACPI_RESOURCE_TYPE_IRQ 0 @@ -569,7 +599,8 @@ struct acpi_resource_pin_function { #define ACPI_RESOURCE_TYPE_FIXED_DMA 18 /* ACPI 5.0 */ #define ACPI_RESOURCE_TYPE_SERIAL_BUS 19 /* ACPI 5.0 */ #define ACPI_RESOURCE_TYPE_PIN_FUNCTION 20 /* ACPI 6.2 */ -#define ACPI_RESOURCE_TYPE_MAX 20 +#define ACPI_RESOURCE_TYPE_PIN_CONFIG 21 /* ACPI 6.2 */ +#define ACPI_RESOURCE_TYPE_MAX 21 /* Master union for resource descriptors */ @@ -598,6 +629,7 @@ union acpi_resource_data { struct acpi_resource_uart_serialbus uart_serial_bus; struct acpi_resource_common_serialbus common_serial_bus; struct acpi_resource_pin_function pin_function; + struct acpi_resource_pin_config pin_config; /* Common fields */ |