+/*
+ * ACPI 5.0: 6.4.3.8.1 GPIO Connection Descriptor
+ * Type 1, Large Item Name 0xC
+ */
+
+static Aml *aml_gpio_connection(AmlGpioConnectionType type,
+ AmlConsumerAndProducer con_and_pro,
+ uint8_t flags, AmlPinConfig pin_config,
+ uint16_t output_drive,
+ uint16_t debounce_timeout,
+ const uint32_t pin_list[], uint32_t pin_count,
+ const char *resource_source_name,
+ const uint8_t *vendor_data,
+ uint16_t vendor_data_len)
+{
+ Aml *var = aml_alloc();
+ const uint16_t min_desc_len = 0x16;
+ uint16_t resource_source_name_len, length;
+ uint16_t pin_table_offset, resource_source_name_offset, vendor_data_offset;
+ uint32_t i;
+
+ assert(resource_source_name);
+ resource_source_name_len = strlen(resource_source_name) + 1;
+ length = min_desc_len + resource_source_name_len + vendor_data_len;
+ pin_table_offset = min_desc_len + 1;
+ resource_source_name_offset = pin_table_offset + pin_count * 2;
+ vendor_data_offset = resource_source_name_offset + resource_source_name_len;
+
+ build_append_byte(var->buf, 0x8C); /* GPIO Connection Descriptor */
+ build_append_int_noprefix(var->buf, length, 2); /* Length */
+ build_append_byte(var->buf, 1); /* Revision ID */
+ build_append_byte(var->buf, type); /* GPIO Connection Type */
+ /* General Flags (2 bytes) */
+ build_append_int_noprefix(var->buf, con_and_pro, 2);
+ /* Interrupt and IO Flags (2 bytes) */
+ build_append_int_noprefix(var->buf, flags, 2);
+ /* Pin Configuration 0 = Default 1 = Pull-up 2 = Pull-down 3 = No Pull */
+ build_append_byte(var->buf, pin_config);
+ /* Output Drive Strength (2 bytes) */
+ build_append_int_noprefix(var->buf, output_drive, 2);
+ /* Debounce Timeout (2 bytes) */
+ build_append_int_noprefix(var->buf, debounce_timeout, 2);
+ /* Pin Table Offset (2 bytes) */
+ build_append_int_noprefix(var->buf, pin_table_offset, 2);
+ build_append_byte(var->buf, 0); /* Resource Source Index */
+ /* Resource Source Name Offset (2 bytes) */
+ build_append_int_noprefix(var->buf, resource_source_name_offset, 2);
+ /* Vendor Data Offset (2 bytes) */
+ build_append_int_noprefix(var->buf, vendor_data_offset, 2);
+ /* Vendor Data Length (2 bytes) */
+ build_append_int_noprefix(var->buf, vendor_data_len, 2);
+ /* Pin Number (2n bytes)*/
+ for (i = 0; i < pin_count; i++) {
+ build_append_int_noprefix(var->buf, pin_list[i], 2);
+ }
+
+ /* Resource Source Name */
+ build_append_namestring(var->buf, "%s", resource_source_name);
+ build_append_byte(var->buf, '\0');
+
+ /* Vendor-defined Data */
+ if (vendor_data != NULL) {
+ g_array_append_vals(var->buf, vendor_data, vendor_data_len);
+ }
+
+ return var;
+}
+
+/*
+ * ACPI 5.0: 19.5.53
+ * GpioInt(GPIO Interrupt Connection Resource Descriptor Macro)
+ */
+Aml *aml_gpio_int(AmlConsumerAndProducer con_and_pro,
+ AmlLevelAndEdge edge_level,
+ AmlActiveHighAndLow active_level, AmlShared shared,
+ AmlPinConfig pin_config, uint16_t debounce_timeout,
+ const uint32_t pin_list[], uint32_t pin_count,
+ const char *resource_source_name,
+ const uint8_t *vendor_data, uint16_t vendor_data_len)
+{
+ uint8_t flags = edge_level | (active_level << 1) | (shared << 3);
+
+ return aml_gpio_connection(AML_INTERRUPT_CONNECTION, con_and_pro, flags,
+ pin_config, 0, debounce_timeout, pin_list,
+ pin_count, resource_source_name, vendor_data,
+ vendor_data_len);
+}
+