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>

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 */