/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __USB_TYPEC_DP_H
#define __USB_TYPEC_DP_H
#include <linux/usb/typec_altmode.h>
#include <linux/bitfield.h>
#define USB_TYPEC_DP_SID 0xff01
/* USB IF has not assigned a Standard ID (SID) for VirtualLink,
* so the manufacturers of VirtualLink adapters use their Vendor
* IDs as the SVID.
*/
#define USB_TYPEC_NVIDIA_VLINK_SID 0x955 /* NVIDIA VirtualLink */
#define USB_TYPEC_DP_MODE 1
/*
* Connector states matching the pin assignments in DisplayPort Alt Mode
* Specification.
*
* These values are meant primarily to be used by the mux drivers, but they are
* also used as the "value" part in the alternate mode notification chain, so
* receivers of those notifications will always see them.
*
* Note. DisplayPort USB Type-C Alt Mode Specification version 1.0b deprecated
* pin assignments A, B and F, but they are still defined here for legacy
* purposes.
*/
enum {
TYPEC_DP_STATE_A = TYPEC_STATE_MODAL, /* Not supported after v1.0b */
TYPEC_DP_STATE_B, /* Not supported after v1.0b */
TYPEC_DP_STATE_C,
TYPEC_DP_STATE_D,
TYPEC_DP_STATE_E,
TYPEC_DP_STATE_F, /* Not supported after v1.0b */
};
/*
* struct typec_displayport_data - DisplayPort Alt Mode specific data
* @status: Status Update command VDO content
* @conf: Configure command VDO content
*
* This structure is delivered as the data part with the notifications. It
* contains the VDOs from the two DisplayPort Type-C alternate mode specific
* commands: Status Update and Configure.
*
* @status will show for example the status of the HPD signal.
*/
struct typec_displayport_data {
u32 status;
u32 conf;
};
enum {
DP_PIN_ASSIGN_A, /* Not supported after v1.0b */
DP_PIN_ASSIGN_B, /* Not supported after v1.0b */
DP_PIN_ASSIGN_C,
DP_PIN_ASSIGN_D,
DP_PIN_ASSIGN_E,
DP_PIN_ASSIGN_F, /* Not supported after v1.0b */
};
/* DisplayPort alt mode specific commands */
#define DP_CMD_STATUS_UPDATE VDO_CMD_VENDOR(0)
#define DP_CMD_CONFIGURE VDO_CMD_VENDOR(1)
/* DisplayPort Capabilities VDO bits (returned with Discover Modes) */
#define DP_CAP_CAPABILITY(_cap_) ((_cap_) & 3)
#define DP_CAP_UFP_D 1
#define DP_CAP_DFP_D 2
#define DP_CAP_DFP_D_AND_UFP_D 3
#define DP_CAP_DP_SIGNALLING(_cap_) FIELD_GET(GENMASK(5, 2), _cap_)
#define DP_CAP_SIGNALLING_HBR3 1
#define DP_CAP_SIGNALLING_UHBR10 2
#define DP_CAP_SIGNALLING_UHBR20 3
#define DP_CAP_RECEPTACLE BIT(6)
#define DP_CAP_USB BIT(7)
#define DP_CAP_DFP_D_PIN_ASSIGN(_cap_) FIELD_GET(GENMASK(15, 8), _cap_)
#define DP_CAP_UFP_D_PIN_ASSIGN(_cap_) FIELD_GET(GENMASK(23, 16), _cap_)
/* Get pin assignment taking plug & receptacle into consideration */
#define DP_CAP_PIN_ASSIGN_UFP_D(_cap_) ((_cap_ & DP_CAP_RECEPTACLE) ? \
DP_CAP_UFP_D_PIN_ASSIGN(_cap_) : DP_CAP_DFP_D_PIN_ASSIGN(_cap_))
#define DP_CAP_PIN_ASSIGN_DFP_D(_cap_) ((_cap_ & DP_CAP_RECEPTACLE) ? \
DP_CAP_DFP_D_PIN_ASSIGN(_cap_) : DP_CAP_UFP_D_PIN_ASSIGN(_cap_))
#define DP_CAP_UHBR_13_5_SUPPORT BIT(26)
#define DP_CAP_CABLE_TYPE(_cap_) FIELD_GET(GENMASK(29, 28), _cap_)
#define DP_CAP_CABLE_TYPE_PASSIVE 0
#define DP_CAP_CABLE_TYPE_RE_TIMER 1
#define DP_CAP_CABLE_TYPE_RE_DRIVER 2
#define DP_CAP_CABLE_TYPE_OPTICAL 3
#define DP_CAP_DPAM_VERSION BIT(30)
/* DisplayPort Status Update VDO bits */
#define DP_STATUS_CONNECTION(_status_) ((_status_) & 3)
#define DP_STATUS_CON_DISABLED 0
#define DP_STATUS_CON_DFP_D 1
#define DP_STATUS_CON_UFP_D 2
#define DP_STATUS_CON_BOTH 3
#define DP_STATUS_POWER_LOW BIT(2)
#define DP_STATUS_ENABLED BIT(3)
#define DP_STATUS_PREFER_MULTI_FUNC BIT(4)
#define DP_STATUS_SWITCH_TO_USB BIT(5)
#define DP_STATUS_EXIT_DP_MODE BIT(6)
#define DP_STATUS_HPD_STATE BIT(7) /* 0 = HPD_Low, 1 = HPD_High */
#define DP_STATUS_IRQ_HPD BIT(8)
/* DisplayPort Configurations VDO bits */
#define DP_CONF_CURRENTLY(_conf_) ((_conf_) & 3)
#define DP_CONF_UFP_U_AS_DFP_D BIT(0)
#define DP_CONF_UFP_U_AS_UFP_D BIT(1)
#define DP_CONF_SIGNALLING_MASK GENMASK(5, 2)
#define DP_CONF_SIGNALLING_SHIFT 2
#define DP_CONF_SIGNALLING_HBR3 1
#define DP_CONF_SIGNALLING_UHBR10 2
#define DP_CONF_SIGNALLING_UHBR20 3
#define DP_CONF_PIN_ASSIGNEMENT_SHIFT 8
#define DP_CONF_PIN_ASSIGNEMENT_MASK GENMASK(15, 8)
/* Helper for setting/getting the pin assignment value to the configuration */
#define DP_CONF_SET_PIN_ASSIGN(_a_) ((_a_) << 8)
#define DP_CONF_GET_PIN_ASSIGN(_conf_) FIELD_GET(GENMASK(15, 8), _conf_)
#define DP_CONF_UHBR13_5_SUPPORT BIT(26)
#define DP_CONF_CABLE_TYPE_MASK GENMASK(29, 28)
#define DP_CONF_CABLE_TYPE_SHIFT 28
#define DP_CONF_CABLE_TYPE_PASSIVE 0
#define DP_CONF_CABLE_TYPE_RE_TIMER 1
#define DP_CONF_CABLE_TYPE_RE_DRIVER 2
#define DP_CONF_CABLE_TYPE_OPTICAL 3
#define DP_CONF_DPAM_VERSION BIT(30)
#endif /* __USB_TYPEC_DP_H */
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