1 files changed, 80 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_hpd.h b/drivers/gpu/drm/msm/dp/dp_hpd.h
new file mode 100644
index 000000000000..5bc5bb64680f
--- /dev/null
+++ b/drivers/gpu/drm/msm/dp/dp_hpd.h
@@ -0,0 +1,80 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _DP_HPD_H_
+#define _DP_HPD_H_
+
+//#include <linux/usb/usbpd.h>
+
+#include <linux/types.h>
+#include <linux/device.h>
+
+enum plug_orientation {
+	ORIENTATION_NONE,
+	ORIENTATION_CC1,
+	ORIENTATION_CC2,
+};
+
+/**
+ * struct dp_usbpd - DisplayPort status
+ *
+ * @orientation: plug orientation configuration
+ * @low_pow_st: low power state
+ * @adaptor_dp_en: adaptor functionality enabled
+ * @multi_func: multi-function preferred
+ * @usb_config_req: request to switch to usb
+ * @exit_dp_mode: request exit from displayport mode
+ * @hpd_high: Hot Plug Detect signal is high.
+ * @hpd_irq: Change in the status since last message
+ * @alt_mode_cfg_done: bool to specify alt mode status
+ * @debug_en: bool to specify debug mode
+ * @connect: simulate disconnect or connect for debug mode
+ */
+struct dp_usbpd {
+	enum plug_orientation orientation;
+	bool low_pow_st;
+	bool adaptor_dp_en;
+	bool multi_func;
+	bool usb_config_req;
+	bool exit_dp_mode;
+	bool hpd_high;
+	bool hpd_irq;
+	bool alt_mode_cfg_done;
+	bool debug_en;
+
+	int (*connect)(struct dp_usbpd *dp_usbpd, bool hpd);
+};
+
+/**
+ * struct dp_usbpd_cb - callback functions provided by the client
+ *
+ * @configure: called by usbpd module when PD communication has
+ * been completed and the usb peripheral has been configured on
+ * dp mode.
+ * @disconnect: notify the cable disconnect issued by usb.
+ * @attention: notify any attention message issued by usb.
+ */
+struct dp_usbpd_cb {
+	int (*configure)(struct device *dev);
+	int (*disconnect)(struct device *dev);
+	int (*attention)(struct device *dev);
+};
+
+/**
+ * dp_hpd_get() - setup hpd module
+ *
+ * @dev: device instance of the caller
+ * @cb: struct containing callback function pointers.
+ *
+ * This function allows the client to initialize the usbpd
+ * module. The module will communicate with HPD module.
+ */
+struct dp_usbpd *dp_hpd_get(struct device *dev, struct dp_usbpd_cb *cb);
+
+int dp_hpd_register(struct dp_usbpd *dp_usbpd);
+void dp_hpd_unregister(struct dp_usbpd *dp_usbpd);
+int dp_hpd_connect(struct dp_usbpd *dp_usbpd, bool hpd);
+
+#endif /* _DP_HPD_H_ */