1 /* SPDX-License-Identifier: GPL-2.0 */
3 #ifndef __DRIVER_USB_TYPEC_UCSI_H
4 #define __DRIVER_USB_TYPEC_UCSI_H
6 #include <linux/bitops.h>
7 #include <linux/device.h>
8 #include <linux/power_supply.h>
9 #include <linux/types.h>
10 #include <linux/usb/typec.h>
12 /* -------------------------------------------------------------------------- */
17 /* UCSI offsets (Bytes) */
18 #define UCSI_VERSION 0
20 #define UCSI_CONTROL 8
21 #define UCSI_MESSAGE_IN 16
22 #define UCSI_MESSAGE_OUT 32
24 /* Command Status and Connector Change Indication (CCI) bits */
25 #define UCSI_CCI_CONNECTOR(_c_) (((_c_) & GENMASK(7, 1)) >> 1)
26 #define UCSI_CCI_LENGTH(_c_) (((_c_) & GENMASK(15, 8)) >> 8)
27 #define UCSI_CCI_NOT_SUPPORTED BIT(25)
28 #define UCSI_CCI_CANCEL_COMPLETE BIT(26)
29 #define UCSI_CCI_RESET_COMPLETE BIT(27)
30 #define UCSI_CCI_BUSY BIT(28)
31 #define UCSI_CCI_ACK_COMPLETE BIT(29)
32 #define UCSI_CCI_ERROR BIT(30)
33 #define UCSI_CCI_COMMAND_COMPLETE BIT(31)
36 * struct ucsi_operations - UCSI I/O operations
37 * @read: Read operation
38 * @sync_write: Blocking write operation
39 * @async_write: Non-blocking write operation
40 * @update_altmodes: Squashes duplicate DP altmodes
42 * Read and write routines for UCSI interface. @sync_write must wait for the
43 * Command Completion Event from the PPM before returning, and @async_write must
44 * return immediately after sending the data to the PPM.
46 struct ucsi_operations {
47 int (*read)(struct ucsi *ucsi, unsigned int offset,
48 void *val, size_t val_len);
49 int (*sync_write)(struct ucsi *ucsi, unsigned int offset,
50 const void *val, size_t val_len);
51 int (*async_write)(struct ucsi *ucsi, unsigned int offset,
52 const void *val, size_t val_len);
53 bool (*update_altmodes)(struct ucsi *ucsi, struct ucsi_altmode *orig,
54 struct ucsi_altmode *updated);
57 struct ucsi *ucsi_create(struct device *dev, const struct ucsi_operations *ops);
58 void ucsi_destroy(struct ucsi *ucsi);
59 int ucsi_register(struct ucsi *ucsi);
60 void ucsi_unregister(struct ucsi *ucsi);
61 void *ucsi_get_drvdata(struct ucsi *ucsi);
62 void ucsi_set_drvdata(struct ucsi *ucsi, void *data);
64 void ucsi_connector_change(struct ucsi *ucsi, u8 num);
66 /* -------------------------------------------------------------------------- */
69 #define UCSI_PPM_RESET 0x01
70 #define UCSI_CANCEL 0x02
71 #define UCSI_CONNECTOR_RESET 0x03
72 #define UCSI_ACK_CC_CI 0x04
73 #define UCSI_SET_NOTIFICATION_ENABLE 0x05
74 #define UCSI_GET_CAPABILITY 0x06
75 #define UCSI_GET_CONNECTOR_CAPABILITY 0x07
76 #define UCSI_SET_UOM 0x08
77 #define UCSI_SET_UOR 0x09
78 #define UCSI_SET_PDM 0x0a
79 #define UCSI_SET_PDR 0x0b
80 #define UCSI_GET_ALTERNATE_MODES 0x0c
81 #define UCSI_GET_CAM_SUPPORTED 0x0d
82 #define UCSI_GET_CURRENT_CAM 0x0e
83 #define UCSI_SET_NEW_CAM 0x0f
84 #define UCSI_GET_PDOS 0x10
85 #define UCSI_GET_CABLE_PROPERTY 0x11
86 #define UCSI_GET_CONNECTOR_STATUS 0x12
87 #define UCSI_GET_ERROR_STATUS 0x13
89 #define UCSI_CONNECTOR_NUMBER(_num_) ((u64)(_num_) << 16)
90 #define UCSI_COMMAND(_cmd_) ((_cmd_) & 0xff)
92 /* CONNECTOR_RESET command bits */
93 #define UCSI_CONNECTOR_RESET_HARD BIT(23) /* Deprecated in v1.1 */
96 #define UCSI_ACK_CONNECTOR_CHANGE BIT(16)
97 #define UCSI_ACK_COMMAND_COMPLETE BIT(17)
99 /* SET_NOTIFICATION_ENABLE command bits */
100 #define UCSI_ENABLE_NTFY_CMD_COMPLETE BIT(16)
101 #define UCSI_ENABLE_NTFY_EXT_PWR_SRC_CHANGE BIT(17)
102 #define UCSI_ENABLE_NTFY_PWR_OPMODE_CHANGE BIT(18)
103 #define UCSI_ENABLE_NTFY_CAP_CHANGE BIT(21)
104 #define UCSI_ENABLE_NTFY_PWR_LEVEL_CHANGE BIT(22)
105 #define UCSI_ENABLE_NTFY_PD_RESET_COMPLETE BIT(23)
106 #define UCSI_ENABLE_NTFY_CAM_CHANGE BIT(24)
107 #define UCSI_ENABLE_NTFY_BAT_STATUS_CHANGE BIT(25)
108 #define UCSI_ENABLE_NTFY_PARTNER_CHANGE BIT(27)
109 #define UCSI_ENABLE_NTFY_PWR_DIR_CHANGE BIT(28)
110 #define UCSI_ENABLE_NTFY_CONNECTOR_CHANGE BIT(30)
111 #define UCSI_ENABLE_NTFY_ERROR BIT(31)
112 #define UCSI_ENABLE_NTFY_ALL 0xdbe70000
114 /* SET_UOR command bits */
115 #define UCSI_SET_UOR_ROLE(_r_) (((_r_) == TYPEC_HOST ? 1 : 2) << 23)
116 #define UCSI_SET_UOR_ACCEPT_ROLE_SWAPS BIT(25)
118 /* SET_PDF command bits */
119 #define UCSI_SET_PDR_ROLE(_r_) (((_r_) == TYPEC_SOURCE ? 1 : 2) << 23)
120 #define UCSI_SET_PDR_ACCEPT_ROLE_SWAPS BIT(25)
122 /* GET_ALTERNATE_MODES command bits */
123 #define UCSI_ALTMODE_RECIPIENT(_r_) (((_r_) >> 16) & 0x7)
124 #define UCSI_GET_ALTMODE_RECIPIENT(_r_) ((u64)(_r_) << 16)
125 #define UCSI_RECIPIENT_CON 0
126 #define UCSI_RECIPIENT_SOP 1
127 #define UCSI_RECIPIENT_SOP_P 2
128 #define UCSI_RECIPIENT_SOP_PP 3
129 #define UCSI_GET_ALTMODE_CONNECTOR_NUMBER(_r_) ((u64)(_r_) << 24)
130 #define UCSI_ALTMODE_OFFSET(_r_) (((_r_) >> 32) & 0xff)
131 #define UCSI_GET_ALTMODE_OFFSET(_r_) ((u64)(_r_) << 32)
132 #define UCSI_GET_ALTMODE_NUM_ALTMODES(_r_) ((u64)(_r_) << 40)
134 /* GET_PDOS command bits */
135 #define UCSI_GET_PDOS_PARTNER_PDO(_r_) ((u64)(_r_) << 23)
136 #define UCSI_GET_PDOS_NUM_PDOS(_r_) ((u64)(_r_) << 32)
137 #define UCSI_GET_PDOS_SRC_PDOS ((u64)1 << 34)
139 /* -------------------------------------------------------------------------- */
141 /* Error information returned by PPM in response to GET_ERROR_STATUS command. */
142 #define UCSI_ERROR_UNREGONIZED_CMD BIT(0)
143 #define UCSI_ERROR_INVALID_CON_NUM BIT(1)
144 #define UCSI_ERROR_INVALID_CMD_ARGUMENT BIT(2)
145 #define UCSI_ERROR_INCOMPATIBLE_PARTNER BIT(3)
146 #define UCSI_ERROR_CC_COMMUNICATION_ERR BIT(4)
147 #define UCSI_ERROR_DEAD_BATTERY BIT(5)
148 #define UCSI_ERROR_CONTRACT_NEGOTIATION_FAIL BIT(6)
149 #define UCSI_ERROR_OVERCURRENT BIT(7)
150 #define UCSI_ERROR_UNDEFINED BIT(8)
151 #define UCSI_ERROR_PARTNER_REJECTED_SWAP BIT(9)
152 #define UCSI_ERROR_HARD_RESET BIT(10)
153 #define UCSI_ERROR_PPM_POLICY_CONFLICT BIT(11)
154 #define UCSI_ERROR_SWAP_REJECTED BIT(12)
156 #define UCSI_SET_NEW_CAM_ENTER(x) (((x) >> 23) & 0x1)
157 #define UCSI_SET_NEW_CAM_GET_AM(x) (((x) >> 24) & 0xff)
158 #define UCSI_SET_NEW_CAM_AM_MASK (0xff << 24)
159 #define UCSI_SET_NEW_CAM_SET_AM(x) (((x) & 0xff) << 24)
160 #define UCSI_CMD_CONNECTOR_MASK (0x7)
162 /* Data structure filled by PPM in response to GET_CAPABILITY command. */
163 struct ucsi_capability {
165 #define UCSI_CAP_ATTR_DISABLE_STATE BIT(0)
166 #define UCSI_CAP_ATTR_BATTERY_CHARGING BIT(1)
167 #define UCSI_CAP_ATTR_USB_PD BIT(2)
168 #define UCSI_CAP_ATTR_TYPEC_CURRENT BIT(6)
169 #define UCSI_CAP_ATTR_POWER_AC_SUPPLY BIT(8)
170 #define UCSI_CAP_ATTR_POWER_OTHER BIT(10)
171 #define UCSI_CAP_ATTR_POWER_VBUS BIT(14)
174 #define UCSI_CAP_SET_UOM BIT(0)
175 #define UCSI_CAP_SET_PDM BIT(1)
176 #define UCSI_CAP_ALT_MODE_DETAILS BIT(2)
177 #define UCSI_CAP_ALT_MODE_OVERRIDE BIT(3)
178 #define UCSI_CAP_PDO_DETAILS BIT(4)
179 #define UCSI_CAP_CABLE_DETAILS BIT(5)
180 #define UCSI_CAP_EXT_SUPPLY_NOTIFICATIONS BIT(6)
181 #define UCSI_CAP_PD_RESET BIT(7)
190 /* Data structure filled by PPM in response to GET_CONNECTOR_CAPABILITY cmd. */
191 struct ucsi_connector_capability {
193 #define UCSI_CONCAP_OPMODE_DFP BIT(0)
194 #define UCSI_CONCAP_OPMODE_UFP BIT(1)
195 #define UCSI_CONCAP_OPMODE_DRP BIT(2)
196 #define UCSI_CONCAP_OPMODE_AUDIO_ACCESSORY BIT(3)
197 #define UCSI_CONCAP_OPMODE_DEBUG_ACCESSORY BIT(4)
198 #define UCSI_CONCAP_OPMODE_USB2 BIT(5)
199 #define UCSI_CONCAP_OPMODE_USB3 BIT(6)
200 #define UCSI_CONCAP_OPMODE_ALT_MODE BIT(7)
202 #define UCSI_CONCAP_FLAG_PROVIDER BIT(0)
203 #define UCSI_CONCAP_FLAG_CONSUMER BIT(1)
206 struct ucsi_altmode {
211 /* Data structure filled by PPM in response to GET_CABLE_PROPERTY command. */
212 struct ucsi_cable_property {
214 u8 current_capability;
216 #define UCSI_CABLE_PROP_FLAG_VBUS_IN_CABLE BIT(0)
217 #define UCSI_CABLE_PROP_FLAG_ACTIVE_CABLE BIT(1)
218 #define UCSI_CABLE_PROP_FLAG_DIRECTIONALITY BIT(2)
219 #define UCSI_CABLE_PROP_FLAG_PLUG_TYPE(_f_) ((_f_) & GENMASK(3, 0))
220 #define UCSI_CABLE_PROPERTY_PLUG_TYPE_A 0
221 #define UCSI_CABLE_PROPERTY_PLUG_TYPE_B 1
222 #define UCSI_CABLE_PROPERTY_PLUG_TYPE_C 2
223 #define UCSI_CABLE_PROPERTY_PLUG_OTHER 3
224 #define UCSI_CABLE_PROP_MODE_SUPPORT BIT(5)
228 /* Data structure filled by PPM in response to GET_CONNECTOR_STATUS command. */
229 struct ucsi_connector_status {
231 #define UCSI_CONSTAT_EXT_SUPPLY_CHANGE BIT(1)
232 #define UCSI_CONSTAT_POWER_OPMODE_CHANGE BIT(2)
233 #define UCSI_CONSTAT_PDOS_CHANGE BIT(5)
234 #define UCSI_CONSTAT_POWER_LEVEL_CHANGE BIT(6)
235 #define UCSI_CONSTAT_PD_RESET_COMPLETE BIT(7)
236 #define UCSI_CONSTAT_CAM_CHANGE BIT(8)
237 #define UCSI_CONSTAT_BC_CHANGE BIT(9)
238 #define UCSI_CONSTAT_PARTNER_CHANGE BIT(11)
239 #define UCSI_CONSTAT_POWER_DIR_CHANGE BIT(12)
240 #define UCSI_CONSTAT_CONNECT_CHANGE BIT(14)
241 #define UCSI_CONSTAT_ERROR BIT(15)
243 #define UCSI_CONSTAT_PWR_OPMODE(_f_) ((_f_) & GENMASK(2, 0))
244 #define UCSI_CONSTAT_PWR_OPMODE_NONE 0
245 #define UCSI_CONSTAT_PWR_OPMODE_DEFAULT 1
246 #define UCSI_CONSTAT_PWR_OPMODE_BC 2
247 #define UCSI_CONSTAT_PWR_OPMODE_PD 3
248 #define UCSI_CONSTAT_PWR_OPMODE_TYPEC1_5 4
249 #define UCSI_CONSTAT_PWR_OPMODE_TYPEC3_0 5
250 #define UCSI_CONSTAT_CONNECTED BIT(3)
251 #define UCSI_CONSTAT_PWR_DIR BIT(4)
252 #define UCSI_CONSTAT_PARTNER_FLAGS(_f_) (((_f_) & GENMASK(12, 5)) >> 5)
253 #define UCSI_CONSTAT_PARTNER_FLAG_USB 1
254 #define UCSI_CONSTAT_PARTNER_FLAG_ALT_MODE 2
255 #define UCSI_CONSTAT_PARTNER_TYPE(_f_) (((_f_) & GENMASK(15, 13)) >> 13)
256 #define UCSI_CONSTAT_PARTNER_TYPE_DFP 1
257 #define UCSI_CONSTAT_PARTNER_TYPE_UFP 2
258 #define UCSI_CONSTAT_PARTNER_TYPE_CABLE 3 /* Powered Cable */
259 #define UCSI_CONSTAT_PARTNER_TYPE_CABLE_AND_UFP 4 /* Powered Cable */
260 #define UCSI_CONSTAT_PARTNER_TYPE_DEBUG 5
261 #define UCSI_CONSTAT_PARTNER_TYPE_AUDIO 6
262 u32 request_data_obj;
264 #define UCSI_CONSTAT_BC_STATUS(_p_) ((_p_) & GENMASK(2, 0))
265 #define UCSI_CONSTAT_BC_NOT_CHARGING 0
266 #define UCSI_CONSTAT_BC_NOMINAL_CHARGING 1
267 #define UCSI_CONSTAT_BC_SLOW_CHARGING 2
268 #define UCSI_CONSTAT_BC_TRICKLE_CHARGING 3
269 #define UCSI_CONSTAT_PROVIDER_CAP_LIMIT(_p_) (((_p_) & GENMASK(6, 3)) >> 3)
270 #define UCSI_CONSTAT_CAP_PWR_LOWERED 0
271 #define UCSI_CONSTAT_CAP_PWR_BUDGET_LIMIT 1
274 /* -------------------------------------------------------------------------- */
279 struct driver_data *driver_data;
281 const struct ucsi_operations *ops;
283 struct ucsi_capability cap;
284 struct ucsi_connector *connector;
286 struct work_struct work;
288 /* PPM Communication lock */
289 struct mutex ppm_lock;
291 /* The latest "Notification Enable" bits (SET_NOTIFICATION_ENABLE) */
294 /* PPM communication flags */
296 #define EVENT_PENDING 0
297 #define COMMAND_PENDING 1
298 #define ACK_PENDING 2
301 #define UCSI_MAX_SVID 5
302 #define UCSI_MAX_ALTMODES (UCSI_MAX_SVID * 6)
303 #define UCSI_MAX_PDOS (4)
305 #define UCSI_TYPEC_VSAFE5V 5000
306 #define UCSI_TYPEC_1_5_CURRENT 1500
307 #define UCSI_TYPEC_3_0_CURRENT 3000
309 struct ucsi_connector {
313 struct mutex lock; /* port lock */
314 struct work_struct work;
315 struct completion complete;
317 struct typec_port *port;
318 struct typec_partner *partner;
320 struct typec_altmode *port_altmode[UCSI_MAX_ALTMODES];
321 struct typec_altmode *partner_altmode[UCSI_MAX_ALTMODES];
323 struct typec_capability typec_cap;
325 struct ucsi_connector_status status;
326 struct ucsi_connector_capability cap;
327 struct power_supply *psy;
328 struct power_supply_desc psy_desc;
330 u32 src_pdos[UCSI_MAX_PDOS];
334 int ucsi_send_command(struct ucsi *ucsi, u64 command,
335 void *retval, size_t size);
337 void ucsi_altmode_update_active(struct ucsi_connector *con);
338 int ucsi_resume(struct ucsi *ucsi);
340 #if IS_ENABLED(CONFIG_POWER_SUPPLY)
341 int ucsi_register_port_psy(struct ucsi_connector *con);
342 void ucsi_unregister_port_psy(struct ucsi_connector *con);
343 void ucsi_port_psy_changed(struct ucsi_connector *con);
345 static inline int ucsi_register_port_psy(struct ucsi_connector *con) { return 0; }
346 static inline void ucsi_unregister_port_psy(struct ucsi_connector *con) { }
347 static inline void ucsi_port_psy_changed(struct ucsi_connector *con) { }
348 #endif /* CONFIG_POWER_SUPPLY */
350 #if IS_ENABLED(CONFIG_TYPEC_DP_ALTMODE)
351 struct typec_altmode *
352 ucsi_register_displayport(struct ucsi_connector *con,
353 bool override, int offset,
354 struct typec_altmode_desc *desc);
356 void ucsi_displayport_remove_partner(struct typec_altmode *adev);
359 static inline struct typec_altmode *
360 ucsi_register_displayport(struct ucsi_connector *con,
361 bool override, int offset,
362 struct typec_altmode_desc *desc)
368 ucsi_displayport_remove_partner(struct typec_altmode *adev) { }
369 #endif /* CONFIG_TYPEC_DP_ALTMODE */
372 * NVIDIA VirtualLink (svid 0x955) has two altmode. VirtualLink
373 * DP mode with vdo=0x1 and NVIDIA test mode with vdo=0x3
375 #define USB_TYPEC_NVIDIA_VLINK_DP_VDO 0x1
376 #define USB_TYPEC_NVIDIA_VLINK_DBG_VDO 0x3
378 #endif /* __DRIVER_USB_TYPEC_UCSI_H */