| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef __USB_TYPEC_DP_H |
| #define __USB_TYPEC_DP_H |
| |
| #include <linux/usb/typec_altmode.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_SIGNALING BIT(2) /* Always set */ |
| #define DP_CAP_GEN2 BIT(3) /* Reserved after v1.0b */ |
| #define DP_CAP_RECEPTACLE BIT(6) |
| #define DP_CAP_USB BIT(7) |
| #define DP_CAP_DFP_D_PIN_ASSIGN(_cap_) (((_cap_) & GENMASK(15, 8)) >> 8) |
| #define DP_CAP_UFP_D_PIN_ASSIGN(_cap_) (((_cap_) & GENMASK(23, 16)) >> 16) |
| |
| /* 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_SIGNALING_DP BIT(2) |
| #define DP_CONF_SIGNALING_GEN_2 BIT(3) /* Reserved after v1.0b */ |
| #define DP_CONF_PIN_ASSIGNEMENT_SHIFT 8 |
| #define DP_CONF_PIN_ASSIGNEMENT_MASK GENMASK(15, 8) |
| |
| /* Helper for setting/getting the pin assignement value to the configuration */ |
| #define DP_CONF_SET_PIN_ASSIGN(_a_) ((_a_) << 8) |
| #define DP_CONF_GET_PIN_ASSIGN(_conf_) (((_conf_) & GENMASK(15, 8)) >> 8) |
| |
| #endif /* __USB_TYPEC_DP_H */ |