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authorMika Westerberg <mika.westerberg@linux.intel.com>2017-06-05 11:39:19 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-06-12 15:58:39 +0300
commit97028ce6fca0fec53ee71e2fd5acfb2dc8430f1f (patch)
treee9ae63beb8b3e3b2cbf1a07c91b31c19c4d55a76 /include/acpi
parent2b72693066a867ac073a657e871bb64391b4ffdb (diff)
downloadlinux-97028ce6fca0fec53ee71e2fd5acfb2dc8430f1f.tar.xz
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.h34
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 */