drivers/usb/typec/ucsi/ucsi.h

   1
   2 #ifndef __DRIVER_USB_TYPEC_UCSI_H
   3 #define __DRIVER_USB_TYPEC_UCSI_H
   4
   5 #include <linux/bitops.h>
   6 #include <linux/device.h>
   7 #include <linux/types.h>
   8
   9 /* -------------------------------------------------------------------------- */
  10
  11 /* Command Status and Connector Change Indication (CCI) data structure */
  12 struct ucsi_cci {
  13         u8:1; /* reserved */
  14         u8 connector_change:7;
  15         u8 data_length;
  16         u16:9; /* reserved */
  17         u16 not_supported:1;
  18         u16 cancel_complete:1;
  19         u16 reset_complete:1;
  20         u16 busy:1;
  21         u16 ack_complete:1;
  22         u16 error:1;
  23         u16 cmd_complete:1;
  24 } __packed;
  25
  26 /* Default fields in CONTROL data structure */
  27 struct ucsi_command {
  28         u8 cmd;
  29         u8 length;
  30         u64 data:48;
  31 } __packed;
  32
  33 /* ACK Command structure */
  34 struct ucsi_ack_cmd {
  35         u8 cmd;
  36         u8 length;
  37         u8 cci_ack:1;
  38         u8 cmd_ack:1;
  39         u8:6; /* reserved */
  40 } __packed;
  41
  42 /* Connector Reset Command structure */
  43 struct ucsi_con_rst {
  44         u8 cmd;
  45         u8 length;
  46         u8 con_num:7;
  47         u8 hard_reset:1;
  48 } __packed;
  49
  50 /* Set USB Operation Mode Command structure */
  51 struct ucsi_uor_cmd {
  52         u8 cmd;
  53         u8 length;
  54         u16 con_num:7;
  55         u16 role:3;
  56 #define UCSI_UOR_ROLE_DFP                       BIT(0)
  57 #define UCSI_UOR_ROLE_UFP                       BIT(1)
  58 #define UCSI_UOR_ROLE_DRP                       BIT(2)
  59         u16:6; /* reserved */
  60 } __packed;
  61
  62 struct ucsi_control {
  63         union {
  64                 u64 raw_cmd;
  65                 struct ucsi_command cmd;
  66                 struct ucsi_uor_cmd uor;
  67                 struct ucsi_ack_cmd ack;
  68                 struct ucsi_con_rst con_rst;
  69         };
  70 };
  71
  72 #define __UCSI_CMD(_ctrl_, _cmd_)                                       \
  73 {                                                                       \
  74         (_ctrl_).raw_cmd = 0;                                           \
  75         (_ctrl_).cmd.cmd = _cmd_;                                       \
  76 }
  77
  78 /* Helper for preparing ucsi_control for CONNECTOR_RESET command. */
  79 #define UCSI_CMD_CONNECTOR_RESET(_ctrl_, _con_, _hard_)                 \
  80 {                                                                       \
  81         __UCSI_CMD(_ctrl_, UCSI_CONNECTOR_RESET)                        \
  82         (_ctrl_).con_rst.con_num = (_con_)->num;                        \
  83         (_ctrl_).con_rst.hard_reset = _hard_;                           \
  84 }
  85
  86 /* Helper for preparing ucsi_control for ACK_CC_CI command. */
  87 #define UCSI_CMD_ACK(_ctrl_, _ack_)                                     \
  88 {                                                                       \
  89         __UCSI_CMD(_ctrl_, UCSI_ACK_CC_CI)                              \
  90         (_ctrl_).ack.cci_ack = ((_ack_) == UCSI_ACK_EVENT);             \
  91         (_ctrl_).ack.cmd_ack = ((_ack_) == UCSI_ACK_CMD);               \
  92 }
  93
  94 /* Helper for preparing ucsi_control for SET_NOTIFY_ENABLE command. */
  95 #define UCSI_CMD_SET_NTFY_ENABLE(_ctrl_, _ntfys_)                       \
  96 {                                                                       \
  97         __UCSI_CMD(_ctrl_, UCSI_SET_NOTIFICATION_ENABLE)                \
  98         (_ctrl_).cmd.data = _ntfys_;                                    \
  99 }
 100
 101 /* Helper for preparing ucsi_control for GET_CAPABILITY command. */
 102 #define UCSI_CMD_GET_CAPABILITY(_ctrl_)                                 \
 103 {                                                                       \
 104         __UCSI_CMD(_ctrl_, UCSI_GET_CAPABILITY)                         \
 105 }
 106
 107 /* Helper for preparing ucsi_control for GET_CONNECTOR_CAPABILITY command. */
 108 #define UCSI_CMD_GET_CONNECTOR_CAPABILITY(_ctrl_, _con_)                \
 109 {                                                                       \
 110         __UCSI_CMD(_ctrl_, UCSI_GET_CONNECTOR_CAPABILITY)               \
 111         (_ctrl_).cmd.data = _con_;                                      \
 112 }
 113
 114 /* Helper for preparing ucsi_control for GET_CONNECTOR_STATUS command. */
 115 #define UCSI_CMD_GET_CONNECTOR_STATUS(_ctrl_, _con_)                    \
 116 {                                                                       \
 117         __UCSI_CMD(_ctrl_, UCSI_GET_CONNECTOR_STATUS)                   \
 118         (_ctrl_).cmd.data = _con_;                                      \
 119 }
 120
 121 #define __UCSI_ROLE(_ctrl_, _cmd_, _con_num_)                           \
 122 {                                                                       \
 123         __UCSI_CMD(_ctrl_, _cmd_)                                       \
 124         (_ctrl_).uor.con_num = _con_num_;                               \
 125         (_ctrl_).uor.role = UCSI_UOR_ROLE_DRP;                          \
 126 }
 127
 128 /* Helper for preparing ucsi_control for SET_UOR command. */
 129 #define UCSI_CMD_SET_UOR(_ctrl_, _con_, _role_)                         \
 130 {                                                                       \
 131         __UCSI_ROLE(_ctrl_, UCSI_SET_UOR, (_con_)->num)         \
 132         (_ctrl_).uor.role |= (_role_) == TYPEC_HOST ? UCSI_UOR_ROLE_DFP : \
 133                           UCSI_UOR_ROLE_UFP;                            \
 134 }
 135
 136 /* Helper for preparing ucsi_control for SET_PDR command. */
 137 #define UCSI_CMD_SET_PDR(_ctrl_, _con_, _role_)                 \
 138 {                                                                       \
 139         __UCSI_ROLE(_ctrl_, UCSI_SET_PDR, (_con_)->num)         \
 140         (_ctrl_).uor.role |= (_role_) == TYPEC_SOURCE ? UCSI_UOR_ROLE_DFP : \
 141                         UCSI_UOR_ROLE_UFP;                              \
 142 }
 143
 144 /* Commands */
 145 #define UCSI_PPM_RESET                  0x01
 146 #define UCSI_CANCEL                     0x02
 147 #define UCSI_CONNECTOR_RESET            0x03
 148 #define UCSI_ACK_CC_CI                  0x04
 149 #define UCSI_SET_NOTIFICATION_ENABLE    0x05
 150 #define UCSI_GET_CAPABILITY             0x06
 151 #define UCSI_GET_CONNECTOR_CAPABILITY   0x07
 152 #define UCSI_SET_UOM                    0x08
 153 #define UCSI_SET_UOR                    0x09
 154 #define UCSI_SET_PDM                    0x0a
 155 #define UCSI_SET_PDR                    0x0b
 156 #define UCSI_GET_ALTERNATE_MODES        0x0c
 157 #define UCSI_GET_CAM_SUPPORTED          0x0d
 158 #define UCSI_GET_CURRENT_CAM            0x0e
 159 #define UCSI_SET_NEW_CAM                0x0f
 160 #define UCSI_GET_PDOS                   0x10
 161 #define UCSI_GET_CABLE_PROPERTY         0x11
 162 #define UCSI_GET_CONNECTOR_STATUS       0x12
 163 #define UCSI_GET_ERROR_STATUS           0x13
 164
 165 /* ACK_CC_CI commands */
 166 #define UCSI_ACK_EVENT                  1
 167 #define UCSI_ACK_CMD                    2
 168
 169 /* Bits for SET_NOTIFICATION_ENABLE command */
 170 #define UCSI_ENABLE_NTFY_CMD_COMPLETE           BIT(0)
 171 #define UCSI_ENABLE_NTFY_EXT_PWR_SRC_CHANGE     BIT(1)
 172 #define UCSI_ENABLE_NTFY_PWR_OPMODE_CHANGE      BIT(2)
 173 #define UCSI_ENABLE_NTFY_CAP_CHANGE             BIT(5)
 174 #define UCSI_ENABLE_NTFY_PWR_LEVEL_CHANGE       BIT(6)
 175 #define UCSI_ENABLE_NTFY_PD_RESET_COMPLETE      BIT(7)
 176 #define UCSI_ENABLE_NTFY_CAM_CHANGE             BIT(8)
 177 #define UCSI_ENABLE_NTFY_BAT_STATUS_CHANGE      BIT(9)
 178 #define UCSI_ENABLE_NTFY_PARTNER_CHANGE         BIT(11)
 179 #define UCSI_ENABLE_NTFY_PWR_DIR_CHANGE         BIT(12)
 180 #define UCSI_ENABLE_NTFY_CONNECTOR_CHANGE       BIT(14)
 181 #define UCSI_ENABLE_NTFY_ERROR                  BIT(15)
 182 #define UCSI_ENABLE_NTFY_ALL                    0xdbe7
 183
 184 /* Error information returned by PPM in response to GET_ERROR_STATUS command. */
 185 #define UCSI_ERROR_UNREGONIZED_CMD              BIT(0)
 186 #define UCSI_ERROR_INVALID_CON_NUM              BIT(1)
 187 #define UCSI_ERROR_INVALID_CMD_ARGUMENT         BIT(2)
 188 #define UCSI_ERROR_INCOMPATIBLE_PARTNER         BIT(3)
 189 #define UCSI_ERROR_CC_COMMUNICATION_ERR         BIT(4)
 190 #define UCSI_ERROR_DEAD_BATTERY                 BIT(5)
 191 #define UCSI_ERROR_CONTRACT_NEGOTIATION_FAIL    BIT(6)
 192
 193 /* Data structure filled by PPM in response to GET_CAPABILITY command. */
 194 struct ucsi_capability {
 195         u32 attributes;
 196 #define UCSI_CAP_ATTR_DISABLE_STATE             BIT(0)
 197 #define UCSI_CAP_ATTR_BATTERY_CHARGING          BIT(1)
 198 #define UCSI_CAP_ATTR_USB_PD                    BIT(2)
 199 #define UCSI_CAP_ATTR_TYPEC_CURRENT             BIT(6)
 200 #define UCSI_CAP_ATTR_POWER_AC_SUPPLY           BIT(8)
 201 #define UCSI_CAP_ATTR_POWER_OTHER               BIT(10)
 202 #define UCSI_CAP_ATTR_POWER_VBUS                BIT(14)
 203         u32 num_connectors:8;
 204         u32 features:24;
 205 #define UCSI_CAP_SET_UOM                        BIT(0)
 206 #define UCSI_CAP_SET_PDM                        BIT(1)
 207 #define UCSI_CAP_ALT_MODE_DETAILS               BIT(2)
 208 #define UCSI_CAP_ALT_MODE_OVERRIDE              BIT(3)
 209 #define UCSI_CAP_PDO_DETAILS                    BIT(4)
 210 #define UCSI_CAP_CABLE_DETAILS                  BIT(5)
 211 #define UCSI_CAP_EXT_SUPPLY_NOTIFICATIONS       BIT(6)
 212 #define UCSI_CAP_PD_RESET                       BIT(7)
 213         u8 num_alt_modes;
 214         u8 reserved;
 215         u16 bc_version;
 216         u16 pd_version;
 217         u16 typec_version;
 218 } __packed;
 219
 220 /* Data structure filled by PPM in response to GET_CONNECTOR_CAPABILITY cmd. */
 221 struct ucsi_connector_capability {
 222         u8 op_mode;
 223 #define UCSI_CONCAP_OPMODE_DFP                  BIT(0)
 224 #define UCSI_CONCAP_OPMODE_UFP                  BIT(1)
 225 #define UCSI_CONCAP_OPMODE_DRP                  BIT(2)
 226 #define UCSI_CONCAP_OPMODE_AUDIO_ACCESSORY      BIT(3)
 227 #define UCSI_CONCAP_OPMODE_DEBUG_ACCESSORY      BIT(4)
 228 #define UCSI_CONCAP_OPMODE_USB2                 BIT(5)
 229 #define UCSI_CONCAP_OPMODE_USB3                 BIT(6)
 230 #define UCSI_CONCAP_OPMODE_ALT_MODE             BIT(7)
 231         u8 provider:1;
 232         u8 consumer:1;
 233         u8:6; /* reserved */
 234 } __packed;
 235
 236 struct ucsi_altmode {
 237         u16 svid;
 238         u32 mid;
 239 } __packed;
 240
 241 /* Data structure filled by PPM in response to GET_CABLE_PROPERTY command. */
 242 struct ucsi_cable_property {
 243         u16 speed_supported;
 244         u8 current_capability;
 245         u8 vbus_in_cable:1;
 246         u8 active_cable:1;
 247         u8 directionality:1;
 248         u8 plug_type:2;
 249 #define UCSI_CABLE_PROPERTY_PLUG_TYPE_A         0
 250 #define UCSI_CABLE_PROPERTY_PLUG_TYPE_B         1
 251 #define UCSI_CABLE_PROPERTY_PLUG_TYPE_C         2
 252 #define UCSI_CABLE_PROPERTY_PLUG_OTHER          3
 253         u8 mode_support:1;
 254         u8:2; /* reserved */
 255         u8 latency:4;
 256         u8:4; /* reserved */
 257 } __packed;
 258
 259 /* Data structure filled by PPM in response to GET_CONNECTOR_STATUS command. */
 260 struct ucsi_connector_status {
 261         u16 change;
 262 #define UCSI_CONSTAT_EXT_SUPPLY_CHANGE          BIT(1)
 263 #define UCSI_CONSTAT_POWER_OPMODE_CHANGE        BIT(2)
 264 #define UCSI_CONSTAT_PDOS_CHANGE                BIT(5)
 265 #define UCSI_CONSTAT_POWER_LEVEL_CHANGE         BIT(6)
 266 #define UCSI_CONSTAT_PD_RESET_COMPLETE          BIT(7)
 267 #define UCSI_CONSTAT_CAM_CHANGE                 BIT(8)
 268 #define UCSI_CONSTAT_BC_CHANGE                  BIT(9)
 269 #define UCSI_CONSTAT_PARTNER_CHANGE             BIT(11)
 270 #define UCSI_CONSTAT_POWER_DIR_CHANGE           BIT(12)
 271 #define UCSI_CONSTAT_CONNECT_CHANGE             BIT(14)
 272 #define UCSI_CONSTAT_ERROR                      BIT(15)
 273         u16 pwr_op_mode:3;
 274 #define UCSI_CONSTAT_PWR_OPMODE_NONE            0
 275 #define UCSI_CONSTAT_PWR_OPMODE_DEFAULT         1
 276 #define UCSI_CONSTAT_PWR_OPMODE_BC              2
 277 #define UCSI_CONSTAT_PWR_OPMODE_PD              3
 278 #define UCSI_CONSTAT_PWR_OPMODE_TYPEC1_5        4
 279 #define UCSI_CONSTAT_PWR_OPMODE_TYPEC3_0        5
 280         u16 connected:1;
 281         u16 pwr_dir:1;
 282         u16 partner_flags:8;
 283 #define UCSI_CONSTAT_PARTNER_FLAG_USB           BIT(0)
 284 #define UCSI_CONSTAT_PARTNER_FLAG_ALT_MODE      BIT(1)
 285         u16 partner_type:3;
 286 #define UCSI_CONSTAT_PARTNER_TYPE_DFP           1
 287 #define UCSI_CONSTAT_PARTNER_TYPE_UFP           2
 288 #define UCSI_CONSTAT_PARTNER_TYPE_CABLE         3 /* Powered Cable */
 289 #define UCSI_CONSTAT_PARTNER_TYPE_CABLE_AND_UFP 4 /* Powered Cable */
 290 #define UCSI_CONSTAT_PARTNER_TYPE_DEBUG         5
 291 #define UCSI_CONSTAT_PARTNER_TYPE_AUDIO         6
 292         u32 request_data_obj;
 293         u8 bc_status:2;
 294 #define UCSI_CONSTAT_BC_NOT_CHARGING            0
 295 #define UCSI_CONSTAT_BC_NOMINAL_CHARGING        1
 296 #define UCSI_CONSTAT_BC_SLOW_CHARGING           2
 297 #define UCSI_CONSTAT_BC_TRICKLE_CHARGING        3
 298         u8 provider_cap_limit_reason:4;
 299 #define UCSI_CONSTAT_CAP_PWR_LOWERED            0
 300 #define UCSI_CONSTAT_CAP_PWR_BUDGET_LIMIT       1
 301         u8:2; /* reserved */
 302 } __packed;
 303
 304 /* -------------------------------------------------------------------------- */
 305
 306 struct ucsi;
 307
 308 struct ucsi_data {
 309         u16 version;
 310         u16 reserved;
 311         union {
 312                 u32 raw_cci;
 313                 struct ucsi_cci cci;
 314         };
 315         struct ucsi_control ctrl;
 316         u32 message_in[4];
 317         u32 message_out[4];
 318 } __packed;
 319
 320 /*
 321  * struct ucsi_ppm - Interface to UCSI Platform Policy Manager
 322  * @data: memory location to the UCSI data structures
 323  * @cmd: UCSI command execution routine
 324  * @sync: Refresh UCSI mailbox (the data structures)
 325  */
 326 struct ucsi_ppm {
 327         struct ucsi_data *data;
 328         int (*cmd)(struct ucsi_ppm *, struct ucsi_control *);
 329         int (*sync)(struct ucsi_ppm *);
 330 };
 331
 332 struct ucsi *ucsi_register_ppm(struct device *dev, struct ucsi_ppm *ppm);
 333 void ucsi_unregister_ppm(struct ucsi *ucsi);
 334 void ucsi_notify(struct ucsi *ucsi);
 335
 336 #endif /* __DRIVER_USB_TYPEC_UCSI_H */