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authorTim Wawrzynczak <twawrzynczak@chromium.org>2020-05-19 12:38:43 -0600
committerDuncan Laurie <dlaurie@chromium.org>2020-05-28 23:54:43 +0000
commit92d96e84c4f115a5b2ffdc2a20b456170b08752a (patch)
treed9991e0e8a63fb6887c282293e304fcf39b22835 /src/include
parent6046739b9d349d43f6d064660aaf9df49a99cc5f (diff)
downloadcoreboot-92d96e84c4f115a5b2ffdc2a20b456170b08752a.tar.xz
acpi: Add new file for implementing Type-C Connector class
The USB Type-C Connector Class in the Linux kernel is not specific to the ChromeOS EC, so this functionality is now split out into a separate file, acpigen_usb.c. Documentation about the kernel side is available at https://www.kernel.org/doc/html/latest/driver-api/usb/typec.html. Change-Id: Ife5b8b517b261e7c0068c862ea65039c20382c5a Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41539 Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/include')
-rw-r--r--src/include/acpi/acpigen_usb.h61
1 files changed, 61 insertions, 0 deletions
diff --git a/src/include/acpi/acpigen_usb.h b/src/include/acpi/acpigen_usb.h
new file mode 100644
index 0000000000..efc31f349b
--- /dev/null
+++ b/src/include/acpi/acpigen_usb.h
@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef ACPI_ACPIGEN_USB_H
+#define ACPI_ACPIGEN_USB_H
+
+enum usb_typec_power_role {
+ TYPEC_POWER_ROLE_SOURCE,
+ TYPEC_POWER_ROLE_SINK,
+ TYPEC_POWER_ROLE_DUAL,
+};
+
+enum usb_typec_try_power_role {
+ TYPEC_TRY_POWER_ROLE_NONE,
+ TYPEC_TRY_POWER_ROLE_SINK,
+ TYPEC_TRY_POWER_ROLE_SOURCE,
+};
+
+enum usb_typec_data_role {
+ TYPEC_DATA_ROLE_DFP,
+ TYPEC_DATA_ROLE_UFP,
+ TYPEC_DATA_ROLE_DUAL,
+};
+
+/**
+ * Configuration required to write out a Type-C Connector ACPI object.
+ *
+ * @power_role: DUAL if device supports being both a source and a sink, otherwise choose
+ * the device's default power role
+ * @try_power_role: SINK if device supports Try.SNK, SOURCE if device supports Try.SRC,
+ * otherwise choose NONE
+ * @data_role: Choose DUAL if device can alternate between UFP (host) & DFP (device),
+ * otherwise specify UFP or DFP.
+ * @usb2_port: Reference to the ACPI device that represents the USB2 signals
+ * @usb3_port: Reference to the ACPI device that represents the USB3 signals
+ * @usb4_port: Reference to the ACPI device that represents the USB4 signals
+ * @orientation_switch: Reference to the ACPI device that controls the switching of
+ * the orientation/polarity for Data and SBU lines.
+ * @usb_role_switch: Reference to the ACPI device that can select the USB role,
+ * host or device, for the USB port
+ * @mode_switch: Reference to the ACPI device that controls routing of data lines to
+ * various endpoints (xHCI, DP, etc.) on the SoC.
+ */
+struct typec_connector_class_config {
+ enum usb_typec_power_role power_role;
+ enum usb_typec_try_power_role try_power_role;
+ enum usb_typec_data_role data_role;
+ const struct device *usb2_port;
+ const struct device *usb3_port;
+ const struct device *usb4_port;
+ const struct device *orientation_switch;
+ const struct device *usb_role_switch;
+ const struct device *mode_switch;
+};
+
+typedef void (*add_custom_dsd_property_cb)(struct acpi_dp *dsd, int port_number);
+
+void acpigen_write_typec_connector(const struct typec_connector_class_config *config,
+ int port_number,
+ add_custom_dsd_property_cb add_custom_dsd_property);
+
+#endif /* ACPI_ACPIGEN_USB_H */