1 /* SPDX-License-Identifier: GPL-2.0 */
3 #ifndef __LINUX_USB_TYPEC_H
4 #define __LINUX_USB_TYPEC_H
6 #include <linux/types.h>
8 /* XXX: Once we have a header for USB Power Delivery, this belongs there */
9 #define ALTMODE_MAX_MODES 6
11 /* USB Type-C Specification releases */
12 #define USB_TYPEC_REV_1_0 0x100 /* 1.0 */
13 #define USB_TYPEC_REV_1_1 0x110 /* 1.1 */
14 #define USB_TYPEC_REV_1_2 0x120 /* 1.2 */
24 enum typec_port_type {
30 enum typec_port_data {
36 enum typec_plug_type {
44 enum typec_data_role {
54 enum typec_pwr_opmode {
61 enum typec_accessory {
63 TYPEC_ACCESSORY_AUDIO,
64 TYPEC_ACCESSORY_DEBUG,
67 #define TYPEC_MAX_ACCESSORY 3
69 enum typec_orientation {
70 TYPEC_ORIENTATION_NONE,
71 TYPEC_ORIENTATION_NORMAL,
72 TYPEC_ORIENTATION_REVERSE,
76 * struct usb_pd_identity - USB Power Delivery identity data
77 * @id_header: ID Header VDO
78 * @cert_stat: Cert Stat VDO
79 * @product: Product VDO
81 * USB power delivery Discover Identity command response data.
83 * REVISIT: This is USB Power Delivery specific information, so this structure
84 * probable belongs to USB Power Delivery header file once we have them.
86 struct usb_pd_identity {
92 int typec_partner_set_identity(struct typec_partner *partner);
93 int typec_cable_set_identity(struct typec_cable *cable);
96 * struct typec_mode_desc - Individual Mode of an Alternate Mode
97 * @index: Index of the Mode within the SVID
98 * @vdo: VDO returned by Discover Modes USB PD command
99 * @desc: Optional human readable description of the mode
100 * @roles: Only for ports. DRP if the mode is available in both roles
102 * Description of a mode of an Alternate Mode which a connector, cable plug or
103 * partner supports. Every mode will have it's own sysfs group. The details are
104 * the VDO returned by discover modes command, description for the mode and
105 * active flag telling has the mode being entered or not.
107 struct typec_mode_desc {
111 /* Only used with ports */
112 enum typec_port_type roles;
116 * struct typec_altmode_desc - USB Type-C Alternate Mode Descriptor
117 * @svid: Standard or Vendor ID
118 * @n_modes: Number of modes
119 * @modes: Array of modes supported by the Alternate Mode
121 * Representation of an Alternate Mode that has SVID assigned by USB-IF. The
122 * array of modes will list the modes of a particular SVID that are supported by
123 * a connector, partner of a cable plug.
125 struct typec_altmode_desc {
128 struct typec_mode_desc modes[ALTMODE_MAX_MODES];
132 *typec_partner_register_altmode(struct typec_partner *partner,
133 const struct typec_altmode_desc *desc);
135 *typec_plug_register_altmode(struct typec_plug *plug,
136 const struct typec_altmode_desc *desc);
138 *typec_port_register_altmode(struct typec_port *port,
139 const struct typec_altmode_desc *desc);
140 void typec_unregister_altmode(struct typec_altmode *altmode);
142 struct typec_port *typec_altmode2port(struct typec_altmode *alt);
144 void typec_altmode_update_active(struct typec_altmode *alt, int mode,
147 enum typec_plug_index {
153 * struct typec_plug_desc - USB Type-C Cable Plug Descriptor
154 * @index: SOP Prime for the plug connected to DFP and SOP Double Prime for the
155 * plug connected to UFP
157 * Represents USB Type-C Cable Plug.
159 struct typec_plug_desc {
160 enum typec_plug_index index;
164 * struct typec_cable_desc - USB Type-C Cable Descriptor
165 * @type: The plug type from USB PD Cable VDO
166 * @active: Is the cable active or passive
167 * @identity: Result of Discover Identity command
169 * Represents USB Type-C Cable attached to USB Type-C port.
171 struct typec_cable_desc {
172 enum typec_plug_type type;
173 unsigned int active:1;
174 struct usb_pd_identity *identity;
178 * struct typec_partner_desc - USB Type-C Partner Descriptor
179 * @usb_pd: USB Power Delivery support
180 * @accessory: Audio, Debug or none.
181 * @identity: Discover Identity command data
183 * Details about a partner that is attached to USB Type-C port. If @identity
184 * member exists when partner is registered, a directory named "identity" is
185 * created to sysfs for the partner device.
187 struct typec_partner_desc {
188 unsigned int usb_pd:1;
189 enum typec_accessory accessory;
190 struct usb_pd_identity *identity;
194 * struct typec_capability - USB Type-C Port Capabilities
195 * @type: Supported power role of the port
196 * @data: Supported data role of the port
197 * @revision: USB Type-C Specification release. Binary coded decimal
198 * @pd_revision: USB Power Delivery Specification revision if supported
199 * @prefer_role: Initial role preference (DRP ports).
200 * @accessory: Supported Accessory Modes
201 * @sw: Cable plug orientation switch
202 * @mux: Multiplexer switch for Alternate/Accessory Modes
203 * @fwnode: Optional fwnode of the port
204 * @try_role: Set data role preference for DRP port
205 * @dr_set: Set Data Role
206 * @pr_set: Set Power Role
207 * @vconn_set: Set VCONN Role
208 * @activate_mode: Enter/exit given Alternate Mode
209 * @port_type_set: Set port type
211 * Static capabilities of a single USB Type-C port.
213 struct typec_capability {
214 enum typec_port_type type;
215 enum typec_port_data data;
216 u16 revision; /* 0120H = "1.2" */
217 u16 pd_revision; /* 0300H = "3.0" */
219 enum typec_accessory accessory[TYPEC_MAX_ACCESSORY];
221 struct typec_switch *sw;
222 struct typec_mux *mux;
223 struct fwnode_handle *fwnode;
225 int (*try_role)(const struct typec_capability *,
228 int (*dr_set)(const struct typec_capability *,
229 enum typec_data_role);
230 int (*pr_set)(const struct typec_capability *,
232 int (*vconn_set)(const struct typec_capability *,
235 int (*activate_mode)(const struct typec_capability *,
236 int mode, int activate);
237 int (*port_type_set)(const struct typec_capability *,
238 enum typec_port_type);
242 /* Specific to try_role(). Indicates the user want's to clear the preference. */
243 #define TYPEC_NO_PREFERRED_ROLE (-1)
245 struct typec_port *typec_register_port(struct device *parent,
246 const struct typec_capability *cap);
247 void typec_unregister_port(struct typec_port *port);
249 struct typec_partner *typec_register_partner(struct typec_port *port,
250 struct typec_partner_desc *desc);
251 void typec_unregister_partner(struct typec_partner *partner);
253 struct typec_cable *typec_register_cable(struct typec_port *port,
254 struct typec_cable_desc *desc);
255 void typec_unregister_cable(struct typec_cable *cable);
257 struct typec_plug *typec_register_plug(struct typec_cable *cable,
258 struct typec_plug_desc *desc);
259 void typec_unregister_plug(struct typec_plug *plug);
261 void typec_set_data_role(struct typec_port *port, enum typec_data_role role);
262 void typec_set_pwr_role(struct typec_port *port, enum typec_role role);
263 void typec_set_vconn_role(struct typec_port *port, enum typec_role role);
264 void typec_set_pwr_opmode(struct typec_port *port, enum typec_pwr_opmode mode);
266 int typec_set_orientation(struct typec_port *port,
267 enum typec_orientation orientation);
268 enum typec_orientation typec_get_orientation(struct typec_port *port);
269 int typec_set_mode(struct typec_port *port, int mode);
271 int typec_find_port_power_role(const char *name);
272 int typec_find_power_role(const char *name);
273 int typec_find_port_data_role(const char *name);
274 #endif /* __LINUX_USB_TYPEC_H */