1 files changed, 95 insertions, 0 deletions
diff --git a/include/linux/phy/phy-dp.h b/include/linux/phy/phy-dp.h
new file mode 100644
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+++ b/include/linux/phy/phy-dp.h
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+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 Cadence Design Systems Inc.
+ */
+
+#ifndef __PHY_DP_H_
+#define __PHY_DP_H_
+
+#include <linux/types.h>
+
+/**
+ * struct phy_configure_opts_dp - DisplayPort PHY configuration set
+ *
+ * This structure is used to represent the configuration state of a
+ * DisplayPort phy.
+ */
+struct phy_configure_opts_dp {
+	/**
+	 * @link_rate:
+	 *
+	 * Link Rate, in Mb/s, of the main link.
+	 *
+	 * Allowed values: 1620, 2160, 2430, 2700, 3240, 4320, 5400, 8100 Mb/s
+	 */
+	unsigned int link_rate;
+
+	/**
+	 * @lanes:
+	 *
+	 * Number of active, consecutive, data lanes, starting from
+	 * lane 0, used for the transmissions on main link.
+	 *
+	 * Allowed values: 1, 2, 4
+	 */
+	unsigned int lanes;
+
+	/**
+	 * @voltage:
+	 *
+	 * Voltage swing levels, as specified by DisplayPort specification,
+	 * to be used by particular lanes. One value per lane.
+	 * voltage[0] is for lane 0, voltage[1] is for lane 1, etc.
+	 *
+	 * Maximum value: 3
+	 */
+	unsigned int voltage[4];
+
+	/**
+	 * @pre:
+	 *
+	 * Pre-emphasis levels, as specified by DisplayPort specification, to be
+	 * used by particular lanes. One value per lane.
+	 *
+	 * Maximum value: 3
+	 */
+	unsigned int pre[4];
+
+	/**
+	 * @ssc:
+	 *
+	 * Flag indicating, whether or not to enable spread-spectrum clocking.
+	 *
+	 */
+	u8 ssc : 1;
+
+	/**
+	 * @set_rate:
+	 *
+	 * Flag indicating, whether or not reconfigure link rate and SSC to
+	 * requested values.
+	 *
+	 */
+	u8 set_rate : 1;
+
+	/**
+	 * @set_lanes:
+	 *
+	 * Flag indicating, whether or not reconfigure lane count to
+	 * requested value.
+	 *
+	 */
+	u8 set_lanes : 1;
+
+	/**
+	 * @set_voltages:
+	 *
+	 * Flag indicating, whether or not reconfigure voltage swing
+	 * and pre-emphasis to requested values. Only lanes specified
+	 * by "lanes" parameter will be affected.
+	 *
+	 */
+	u8 set_voltages : 1;
+};
+
+#endif /* __PHY_DP_H_ */