1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 #ifndef __LINUX_USB_TYPEC_H 4 #define __LINUX_USB_TYPEC_H 5 6 #include <linux/types.h> 7 8 /* USB Type-C Specification releases */ 9 #define USB_TYPEC_REV_1_0 0x100 /* 1.0 */ 10 #define USB_TYPEC_REV_1_1 0x110 /* 1.1 */ 11 #define USB_TYPEC_REV_1_2 0x120 /* 1.2 */ 12 #define USB_TYPEC_REV_1_3 0x130 /* 1.3 */ 13 #define USB_TYPEC_REV_1_4 0x140 /* 1.4 */ 14 #define USB_TYPEC_REV_2_0 0x200 /* 2.0 */ 15 16 struct typec_partner; 17 struct typec_cable; 18 struct typec_plug; 19 struct typec_port; 20 21 struct fwnode_handle; 22 struct device; 23 24 enum typec_port_type { 25 TYPEC_PORT_SRC, 26 TYPEC_PORT_SNK, 27 TYPEC_PORT_DRP, 28 }; 29 30 enum typec_port_data { 31 TYPEC_PORT_DFP, 32 TYPEC_PORT_UFP, 33 TYPEC_PORT_DRD, 34 }; 35 36 enum typec_plug_type { 37 USB_PLUG_NONE, 38 USB_PLUG_TYPE_A, 39 USB_PLUG_TYPE_B, 40 USB_PLUG_TYPE_C, 41 USB_PLUG_CAPTIVE, 42 }; 43 44 enum typec_data_role { 45 TYPEC_DEVICE, 46 TYPEC_HOST, 47 }; 48 49 enum typec_role { 50 TYPEC_SINK, 51 TYPEC_SOURCE, 52 }; 53 54 enum typec_pwr_opmode { 55 TYPEC_PWR_MODE_USB, 56 TYPEC_PWR_MODE_1_5A, 57 TYPEC_PWR_MODE_3_0A, 58 TYPEC_PWR_MODE_PD, 59 }; 60 61 enum typec_accessory { 62 TYPEC_ACCESSORY_NONE, 63 TYPEC_ACCESSORY_AUDIO, 64 TYPEC_ACCESSORY_DEBUG, 65 }; 66 67 #define TYPEC_MAX_ACCESSORY 3 68 69 enum typec_orientation { 70 TYPEC_ORIENTATION_NONE, 71 TYPEC_ORIENTATION_NORMAL, 72 TYPEC_ORIENTATION_REVERSE, 73 }; 74 75 /* 76 * struct enter_usb_data - Enter_USB Message details 77 * @eudo: Enter_USB Data Object 78 * @active_link_training: Active Cable Plug Link Training 79 * 80 * @active_link_training is a flag that should be set with uni-directional SBRX 81 * communication, and left 0 with passive cables and with bi-directional SBRX 82 * communication. 83 */ 84 struct enter_usb_data { 85 u32 eudo; 86 unsigned char active_link_training:1; 87 }; 88 89 /* 90 * struct usb_pd_identity - USB Power Delivery identity data 91 * @id_header: ID Header VDO 92 * @cert_stat: Cert Stat VDO 93 * @product: Product VDO 94 * @vdo: Product Type Specific VDOs 95 * 96 * USB power delivery Discover Identity command response data. 97 * 98 * REVISIT: This is USB Power Delivery specific information, so this structure 99 * probable belongs to USB Power Delivery header file once we have them. 100 */ 101 struct usb_pd_identity { 102 u32 id_header; 103 u32 cert_stat; 104 u32 product; 105 u32 vdo[3]; 106 }; 107 108 int typec_partner_set_identity(struct typec_partner *partner); 109 int typec_cable_set_identity(struct typec_cable *cable); 110 111 /* 112 * struct typec_altmode_desc - USB Type-C Alternate Mode Descriptor 113 * @svid: Standard or Vendor ID 114 * @mode: Index of the Mode 115 * @vdo: VDO returned by Discover Modes USB PD command 116 * @roles: Only for ports. DRP if the mode is available in both roles 117 * 118 * Description of an Alternate Mode which a connector, cable plug or partner 119 * supports. 120 */ 121 struct typec_altmode_desc { 122 u16 svid; 123 u8 mode; 124 u32 vdo; 125 /* Only used with ports */ 126 enum typec_port_data roles; 127 }; 128 129 struct typec_altmode 130 *typec_partner_register_altmode(struct typec_partner *partner, 131 const struct typec_altmode_desc *desc); 132 struct typec_altmode 133 *typec_plug_register_altmode(struct typec_plug *plug, 134 const struct typec_altmode_desc *desc); 135 struct typec_altmode 136 *typec_port_register_altmode(struct typec_port *port, 137 const struct typec_altmode_desc *desc); 138 void typec_unregister_altmode(struct typec_altmode *altmode); 139 140 struct typec_port *typec_altmode2port(struct typec_altmode *alt); 141 142 void typec_altmode_update_active(struct typec_altmode *alt, bool active); 143 144 enum typec_plug_index { 145 TYPEC_PLUG_SOP_P, 146 TYPEC_PLUG_SOP_PP, 147 }; 148 149 /* 150 * struct typec_plug_desc - USB Type-C Cable Plug Descriptor 151 * @index: SOP Prime for the plug connected to DFP and SOP Double Prime for the 152 * plug connected to UFP 153 * 154 * Represents USB Type-C Cable Plug. 155 */ 156 struct typec_plug_desc { 157 enum typec_plug_index index; 158 }; 159 160 /* 161 * struct typec_cable_desc - USB Type-C Cable Descriptor 162 * @type: The plug type from USB PD Cable VDO 163 * @active: Is the cable active or passive 164 * @identity: Result of Discover Identity command 165 * 166 * Represents USB Type-C Cable attached to USB Type-C port. 167 */ 168 struct typec_cable_desc { 169 enum typec_plug_type type; 170 unsigned int active:1; 171 struct usb_pd_identity *identity; 172 }; 173 174 /* 175 * struct typec_partner_desc - USB Type-C Partner Descriptor 176 * @usb_pd: USB Power Delivery support 177 * @accessory: Audio, Debug or none. 178 * @identity: Discover Identity command data 179 * 180 * Details about a partner that is attached to USB Type-C port. If @identity 181 * member exists when partner is registered, a directory named "identity" is 182 * created to sysfs for the partner device. 183 */ 184 struct typec_partner_desc { 185 unsigned int usb_pd:1; 186 enum typec_accessory accessory; 187 struct usb_pd_identity *identity; 188 }; 189 190 /** 191 * struct typec_operations - USB Type-C Port Operations 192 * @try_role: Set data role preference for DRP port 193 * @dr_set: Set Data Role 194 * @pr_set: Set Power Role 195 * @vconn_set: Source VCONN 196 * @port_type_set: Set port type 197 */ 198 struct typec_operations { 199 int (*try_role)(struct typec_port *port, int role); 200 int (*dr_set)(struct typec_port *port, enum typec_data_role role); 201 int (*pr_set)(struct typec_port *port, enum typec_role role); 202 int (*vconn_set)(struct typec_port *port, enum typec_role role); 203 int (*port_type_set)(struct typec_port *port, 204 enum typec_port_type type); 205 }; 206 207 /* 208 * struct typec_capability - USB Type-C Port Capabilities 209 * @type: Supported power role of the port 210 * @data: Supported data role of the port 211 * @revision: USB Type-C Specification release. Binary coded decimal 212 * @pd_revision: USB Power Delivery Specification revision if supported 213 * @prefer_role: Initial role preference (DRP ports). 214 * @accessory: Supported Accessory Modes 215 * @fwnode: Optional fwnode of the port 216 * @driver_data: Private pointer for driver specific info 217 * @ops: Port operations vector 218 * 219 * Static capabilities of a single USB Type-C port. 220 */ 221 struct typec_capability { 222 enum typec_port_type type; 223 enum typec_port_data data; 224 u16 revision; /* 0120H = "1.2" */ 225 u16 pd_revision; /* 0300H = "3.0" */ 226 int prefer_role; 227 enum typec_accessory accessory[TYPEC_MAX_ACCESSORY]; 228 unsigned int orientation_aware:1; 229 230 struct fwnode_handle *fwnode; 231 void *driver_data; 232 233 const struct typec_operations *ops; 234 }; 235 236 /* Specific to try_role(). Indicates the user want's to clear the preference. */ 237 #define TYPEC_NO_PREFERRED_ROLE (-1) 238 239 struct typec_port *typec_register_port(struct device *parent, 240 const struct typec_capability *cap); 241 void typec_unregister_port(struct typec_port *port); 242 243 struct typec_partner *typec_register_partner(struct typec_port *port, 244 struct typec_partner_desc *desc); 245 void typec_unregister_partner(struct typec_partner *partner); 246 247 struct typec_cable *typec_register_cable(struct typec_port *port, 248 struct typec_cable_desc *desc); 249 void typec_unregister_cable(struct typec_cable *cable); 250 251 struct typec_cable *typec_cable_get(struct typec_port *port); 252 void typec_cable_put(struct typec_cable *cable); 253 int typec_cable_is_active(struct typec_cable *cable); 254 255 struct typec_plug *typec_register_plug(struct typec_cable *cable, 256 struct typec_plug_desc *desc); 257 void typec_unregister_plug(struct typec_plug *plug); 258 259 void typec_set_data_role(struct typec_port *port, enum typec_data_role role); 260 void typec_set_pwr_role(struct typec_port *port, enum typec_role role); 261 void typec_set_vconn_role(struct typec_port *port, enum typec_role role); 262 void typec_set_pwr_opmode(struct typec_port *port, enum typec_pwr_opmode mode); 263 264 int typec_set_orientation(struct typec_port *port, 265 enum typec_orientation orientation); 266 enum typec_orientation typec_get_orientation(struct typec_port *port); 267 int typec_set_mode(struct typec_port *port, int mode); 268 269 void *typec_get_drvdata(struct typec_port *port); 270 271 int typec_find_pwr_opmode(const char *name); 272 int typec_find_orientation(const char *name); 273 int typec_find_port_power_role(const char *name); 274 int typec_find_power_role(const char *name); 275 int typec_find_port_data_role(const char *name); 276 #endif /* __LINUX_USB_TYPEC_H */ 277