/* 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_ */