1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __USB_TYPEC_DP_H 3 #define __USB_TYPEC_DP_H 4 5 #include <linux/usb/typec_altmode.h> 6 7 #define USB_TYPEC_DP_SID 0xff01 8 #define USB_TYPEC_DP_MODE 1 9 10 /* 11 * Connector states matching the pin assignments in DisplayPort Alt Mode 12 * Specification. 13 * 14 * These values are meant primarily to be used by the mux drivers, but they are 15 * also used as the "value" part in the alternate mode notification chain, so 16 * receivers of those notifications will always see them. 17 * 18 * Note. DisplayPort USB Type-C Alt Mode Specification version 1.0b deprecated 19 * pin assignments A, B and F, but they are still defined here for legacy 20 * purposes. 21 */ 22 enum { 23 TYPEC_DP_STATE_A = TYPEC_STATE_MODAL, /* Not supported after v1.0b */ 24 TYPEC_DP_STATE_B, /* Not supported after v1.0b */ 25 TYPEC_DP_STATE_C, 26 TYPEC_DP_STATE_D, 27 TYPEC_DP_STATE_E, 28 TYPEC_DP_STATE_F, /* Not supported after v1.0b */ 29 }; 30 31 /* 32 * struct typec_displayport_data - DisplayPort Alt Mode specific data 33 * @status: Status Update command VDO content 34 * @conf: Configure command VDO content 35 * 36 * This structure is delivered as the data part with the notifications. It 37 * contains the VDOs from the two DisplayPort Type-C alternate mode specific 38 * commands: Status Update and Configure. 39 * 40 * @status will show for example the status of the HPD signal. 41 */ 42 struct typec_displayport_data { 43 u32 status; 44 u32 conf; 45 }; 46 47 enum { 48 DP_PIN_ASSIGN_A, /* Not supported after v1.0b */ 49 DP_PIN_ASSIGN_B, /* Not supported after v1.0b */ 50 DP_PIN_ASSIGN_C, 51 DP_PIN_ASSIGN_D, 52 DP_PIN_ASSIGN_E, 53 DP_PIN_ASSIGN_F, /* Not supported after v1.0b */ 54 }; 55 56 /* DisplayPort alt mode specific commands */ 57 #define DP_CMD_STATUS_UPDATE VDO_CMD_VENDOR(0) 58 #define DP_CMD_CONFIGURE VDO_CMD_VENDOR(1) 59 60 /* DisplayPort Capabilities VDO bits (returned with Discover Modes) */ 61 #define DP_CAP_CAPABILITY(_cap_) ((_cap_) & 3) 62 #define DP_CAP_UFP_D 1 63 #define DP_CAP_DFP_D 2 64 #define DP_CAP_DFP_D_AND_UFP_D 3 65 #define DP_CAP_DP_SIGNALING BIT(2) /* Always set */ 66 #define DP_CAP_GEN2 BIT(3) /* Reserved after v1.0b */ 67 #define DP_CAP_RECEPTACLE BIT(6) 68 #define DP_CAP_USB BIT(7) 69 #define DP_CAP_DFP_D_PIN_ASSIGN(_cap_) (((_cap_) & GENMASK(15, 8)) >> 8) 70 #define DP_CAP_UFP_D_PIN_ASSIGN(_cap_) (((_cap_) & GENMASK(23, 16)) >> 16) 71 72 /* DisplayPort Status Update VDO bits */ 73 #define DP_STATUS_CONNECTION(_status_) ((_status_) & 3) 74 #define DP_STATUS_CON_DISABLED 0 75 #define DP_STATUS_CON_DFP_D 1 76 #define DP_STATUS_CON_UFP_D 2 77 #define DP_STATUS_CON_BOTH 3 78 #define DP_STATUS_POWER_LOW BIT(2) 79 #define DP_STATUS_ENABLED BIT(3) 80 #define DP_STATUS_PREFER_MULTI_FUNC BIT(4) 81 #define DP_STATUS_SWITCH_TO_USB BIT(5) 82 #define DP_STATUS_EXIT_DP_MODE BIT(6) 83 #define DP_STATUS_HPD_STATE BIT(7) /* 0 = HPD_Low, 1 = HPD_High */ 84 #define DP_STATUS_IRQ_HPD BIT(8) 85 86 /* DisplayPort Configurations VDO bits */ 87 #define DP_CONF_CURRENTLY(_conf_) ((_conf_) & 3) 88 #define DP_CONF_UFP_U_AS_DFP_D BIT(0) 89 #define DP_CONF_UFP_U_AS_UFP_D BIT(1) 90 #define DP_CONF_SIGNALING_DP BIT(2) 91 #define DP_CONF_SIGNALING_GEN_2 BIT(3) /* Reserved after v1.0b */ 92 #define DP_CONF_PIN_ASSIGNEMENT_SHIFT 8 93 #define DP_CONF_PIN_ASSIGNEMENT_MASK GENMASK(15, 8) 94 95 #endif /* __USB_TYPEC_DP_H */ 96
