Lines Matching +full:max +full:- +full:msg
1 // SPDX-License-Identifier: GPL-2.0
22 [EC_RES_INVALID_COMMAND] = -EOPNOTSUPP,
23 [EC_RES_ERROR] = -EIO,
24 [EC_RES_INVALID_PARAM] = -EINVAL,
25 [EC_RES_ACCESS_DENIED] = -EACCES,
26 [EC_RES_INVALID_RESPONSE] = -EPROTO,
27 [EC_RES_INVALID_VERSION] = -ENOPROTOOPT,
28 [EC_RES_INVALID_CHECKSUM] = -EBADMSG,
29 [EC_RES_IN_PROGRESS] = -EINPROGRESS,
30 [EC_RES_UNAVAILABLE] = -ENODATA,
31 [EC_RES_TIMEOUT] = -ETIMEDOUT,
32 [EC_RES_OVERFLOW] = -EOVERFLOW,
33 [EC_RES_INVALID_HEADER] = -EBADR,
34 [EC_RES_REQUEST_TRUNCATED] = -EBADR,
35 [EC_RES_RESPONSE_TOO_BIG] = -EFBIG,
36 [EC_RES_BUS_ERROR] = -EFAULT,
37 [EC_RES_BUSY] = -EBUSY,
38 [EC_RES_INVALID_HEADER_VERSION] = -EBADMSG,
39 [EC_RES_INVALID_HEADER_CRC] = -EBADMSG,
40 [EC_RES_INVALID_DATA_CRC] = -EBADMSG,
41 [EC_RES_DUP_UNAVAILABLE] = -ENODATA,
52 ret = -EPROTO; in cros_ec_map_error()
59 struct cros_ec_command *msg) in prepare_tx() argument
66 if (msg->outsize + sizeof(*request) > ec_dev->dout_size) in prepare_tx()
67 return -EINVAL; in prepare_tx()
69 out = ec_dev->dout; in prepare_tx()
71 request->struct_version = EC_HOST_REQUEST_VERSION; in prepare_tx()
72 request->checksum = 0; in prepare_tx()
73 request->command = msg->command; in prepare_tx()
74 request->command_version = msg->version; in prepare_tx()
75 request->reserved = 0; in prepare_tx()
76 request->data_len = msg->outsize; in prepare_tx()
82 memcpy(out + sizeof(*request), msg->data, msg->outsize); in prepare_tx()
83 for (i = 0; i < msg->outsize; i++) in prepare_tx()
84 csum += msg->data[i]; in prepare_tx()
86 request->checksum = -csum; in prepare_tx()
88 return sizeof(*request) + msg->outsize; in prepare_tx()
92 struct cros_ec_command *msg) in prepare_tx_legacy() argument
98 if (msg->outsize > EC_PROTO2_MAX_PARAM_SIZE) in prepare_tx_legacy()
99 return -EINVAL; in prepare_tx_legacy()
101 out = ec_dev->dout; in prepare_tx_legacy()
102 out[0] = EC_CMD_VERSION0 + msg->version; in prepare_tx_legacy()
103 out[1] = msg->command; in prepare_tx_legacy()
104 out[2] = msg->outsize; in prepare_tx_legacy()
106 for (i = 0; i < msg->outsize; i++) in prepare_tx_legacy()
107 csum += out[EC_MSG_TX_HEADER_BYTES + i] = msg->data[i]; in prepare_tx_legacy()
108 out[EC_MSG_TX_HEADER_BYTES + msg->outsize] = csum; in prepare_tx_legacy()
110 return EC_MSG_TX_PROTO_BYTES + msg->outsize; in prepare_tx_legacy()
113 static int cros_ec_xfer_command(struct cros_ec_device *ec_dev, struct cros_ec_command *msg) in cros_ec_xfer_command() argument
116 int (*xfer_fxn)(struct cros_ec_device *ec, struct cros_ec_command *msg); in cros_ec_xfer_command()
118 if (ec_dev->proto_version > 2) in cros_ec_xfer_command()
119 xfer_fxn = ec_dev->pkt_xfer; in cros_ec_xfer_command()
121 xfer_fxn = ec_dev->cmd_xfer; in cros_ec_xfer_command()
129 dev_err_once(ec_dev->dev, "missing EC transfer API, cannot send command\n"); in cros_ec_xfer_command()
130 return -EIO; in cros_ec_xfer_command()
133 trace_cros_ec_request_start(msg); in cros_ec_xfer_command()
134 ret = (*xfer_fxn)(ec_dev, msg); in cros_ec_xfer_command()
135 trace_cros_ec_request_done(msg, ret); in cros_ec_xfer_command()
143 struct cros_ec_command msg; in cros_ec_wait_until_complete() member
146 struct cros_ec_command *msg = &buf.msg; in cros_ec_wait_until_complete() local
150 msg->version = 0; in cros_ec_wait_until_complete()
151 msg->command = EC_CMD_GET_COMMS_STATUS; in cros_ec_wait_until_complete()
152 msg->insize = sizeof(*status); in cros_ec_wait_until_complete()
153 msg->outsize = 0; in cros_ec_wait_until_complete()
159 ret = cros_ec_xfer_command(ec_dev, msg); in cros_ec_wait_until_complete()
160 if (ret == -EAGAIN) in cros_ec_wait_until_complete()
165 *result = msg->result; in cros_ec_wait_until_complete()
166 if (msg->result != EC_RES_SUCCESS) in cros_ec_wait_until_complete()
170 ret = -EPROTO; in cros_ec_wait_until_complete()
174 if (!(status->flags & EC_COMMS_STATUS_PROCESSING)) in cros_ec_wait_until_complete()
179 ret = -EAGAIN; in cros_ec_wait_until_complete()
184 static int cros_ec_send_command(struct cros_ec_device *ec_dev, struct cros_ec_command *msg) in cros_ec_send_command() argument
186 int ret = cros_ec_xfer_command(ec_dev, msg); in cros_ec_send_command()
188 if (msg->result == EC_RES_IN_PROGRESS) in cros_ec_send_command()
189 ret = cros_ec_wait_until_complete(ec_dev, &msg->result); in cros_ec_send_command()
195 * cros_ec_prepare_tx() - Prepare an outgoing message in the output buffer.
197 * @msg: Message to write.
205 struct cros_ec_command *msg) in cros_ec_prepare_tx() argument
207 if (ec_dev->proto_version > 2) in cros_ec_prepare_tx()
208 return prepare_tx(ec_dev, msg); in cros_ec_prepare_tx()
210 return prepare_tx_legacy(ec_dev, msg); in cros_ec_prepare_tx()
215 * cros_ec_check_result() - Check ec_msg->result.
217 * @msg: Message to check.
219 * This is used by ChromeOS EC drivers to check the ec_msg->result for
225 * Return: -EAGAIN if ec_msg->result == EC_RES_IN_PROGRESS. Otherwise, 0.
228 struct cros_ec_command *msg) in cros_ec_check_result() argument
230 switch (msg->result) { in cros_ec_check_result()
234 dev_dbg(ec_dev->dev, "command 0x%02x in progress\n", in cros_ec_check_result()
235 msg->command); in cros_ec_check_result()
236 return -EAGAIN; in cros_ec_check_result()
238 dev_dbg(ec_dev->dev, "command 0x%02x returned %d\n", in cros_ec_check_result()
239 msg->command, msg->result); in cros_ec_check_result()
254 * the caller has ec_dev->lock mutex, or the caller knows there is
259 struct cros_ec_command *msg; in cros_ec_get_host_event_wake_mask() local
263 msg = kzalloc(sizeof(*msg) + sizeof(*r), GFP_KERNEL); in cros_ec_get_host_event_wake_mask()
264 if (!msg) in cros_ec_get_host_event_wake_mask()
265 return -ENOMEM; in cros_ec_get_host_event_wake_mask()
267 msg->command = EC_CMD_HOST_EVENT_GET_WAKE_MASK; in cros_ec_get_host_event_wake_mask()
268 msg->insize = sizeof(*r); in cros_ec_get_host_event_wake_mask()
270 ret = cros_ec_send_command(ec_dev, msg); in cros_ec_get_host_event_wake_mask()
274 mapped = cros_ec_map_error(msg->result); in cros_ec_get_host_event_wake_mask()
281 ret = -EPROTO; in cros_ec_get_host_event_wake_mask()
285 r = (struct ec_response_host_event_mask *)msg->data; in cros_ec_get_host_event_wake_mask()
286 *mask = r->mask; in cros_ec_get_host_event_wake_mask()
289 kfree(msg); in cros_ec_get_host_event_wake_mask()
295 struct cros_ec_command *msg; in cros_ec_rwsig_continue() local
300 ec_dev->proto_version = 3; in cros_ec_rwsig_continue()
302 msg = kmalloc(sizeof(*msg) + sizeof(*rwsig_action), GFP_KERNEL); in cros_ec_rwsig_continue()
303 if (!msg) in cros_ec_rwsig_continue()
304 return -ENOMEM; in cros_ec_rwsig_continue()
306 msg->version = 0; in cros_ec_rwsig_continue()
307 msg->command = EC_CMD_RWSIG_ACTION; in cros_ec_rwsig_continue()
308 msg->insize = 0; in cros_ec_rwsig_continue()
309 msg->outsize = sizeof(*rwsig_action); in cros_ec_rwsig_continue()
311 rwsig_action = (struct ec_params_rwsig_action *)msg->data; in cros_ec_rwsig_continue()
312 rwsig_action->action = RWSIG_ACTION_CONTINUE; in cros_ec_rwsig_continue()
315 ret = cros_ec_send_command(ec_dev, msg); in cros_ec_rwsig_continue()
320 } else if (msg->result == EC_RES_INVALID_COMMAND) { in cros_ec_rwsig_continue()
327 } else if (msg->result != EC_RES_SUCCESS) { in cros_ec_rwsig_continue()
329 ret = cros_ec_map_error(msg->result); in cros_ec_rwsig_continue()
341 if (ret != -ETIMEDOUT) in cros_ec_rwsig_continue()
345 kfree(msg); in cros_ec_rwsig_continue()
353 struct cros_ec_command *msg; in cros_ec_get_proto_info() local
357 ec_dev->proto_version = 3; in cros_ec_get_proto_info()
359 ec_dev->max_passthru = 0; in cros_ec_get_proto_info()
361 msg = kzalloc(sizeof(*msg) + sizeof(*info), GFP_KERNEL); in cros_ec_get_proto_info()
362 if (!msg) in cros_ec_get_proto_info()
363 return -ENOMEM; in cros_ec_get_proto_info()
365 msg->command = EC_CMD_PASSTHRU_OFFSET(devidx) | EC_CMD_GET_PROTOCOL_INFO; in cros_ec_get_proto_info()
366 msg->insize = sizeof(*info); in cros_ec_get_proto_info()
368 ret = cros_ec_send_command(ec_dev, msg); in cros_ec_get_proto_info()
371 dev_dbg(ec_dev->dev, in cros_ec_get_proto_info()
377 mapped = cros_ec_map_error(msg->result); in cros_ec_get_proto_info()
384 ret = -EPROTO; in cros_ec_get_proto_info()
388 info = (struct ec_response_get_protocol_info *)msg->data; in cros_ec_get_proto_info()
392 ec_dev->max_request = info->max_request_packet_size - in cros_ec_get_proto_info()
394 ec_dev->max_response = info->max_response_packet_size - in cros_ec_get_proto_info()
396 ec_dev->proto_version = min(EC_HOST_REQUEST_VERSION, in cros_ec_get_proto_info()
397 fls(info->protocol_versions) - 1); in cros_ec_get_proto_info()
398 ec_dev->din_size = info->max_response_packet_size + EC_MAX_RESPONSE_OVERHEAD; in cros_ec_get_proto_info()
399 ec_dev->dout_size = info->max_request_packet_size + EC_MAX_REQUEST_OVERHEAD; in cros_ec_get_proto_info()
401 dev_dbg(ec_dev->dev, "using proto v%u\n", ec_dev->proto_version); in cros_ec_get_proto_info()
404 ec_dev->max_passthru = info->max_request_packet_size - in cros_ec_get_proto_info()
407 dev_dbg(ec_dev->dev, "found PD chip\n"); in cros_ec_get_proto_info()
410 dev_dbg(ec_dev->dev, "unknown passthru index: %d\n", devidx); in cros_ec_get_proto_info()
416 kfree(msg); in cros_ec_get_proto_info()
422 struct cros_ec_command *msg; in cros_ec_get_proto_info_legacy() local
427 ec_dev->proto_version = 2; in cros_ec_get_proto_info_legacy()
429 msg = kzalloc(sizeof(*msg) + max(sizeof(*params), sizeof(*response)), GFP_KERNEL); in cros_ec_get_proto_info_legacy()
430 if (!msg) in cros_ec_get_proto_info_legacy()
431 return -ENOMEM; in cros_ec_get_proto_info_legacy()
433 msg->command = EC_CMD_HELLO; in cros_ec_get_proto_info_legacy()
434 msg->insize = sizeof(*response); in cros_ec_get_proto_info_legacy()
435 msg->outsize = sizeof(*params); in cros_ec_get_proto_info_legacy()
437 params = (struct ec_params_hello *)msg->data; in cros_ec_get_proto_info_legacy()
438 params->in_data = 0xa0b0c0d0; in cros_ec_get_proto_info_legacy()
440 ret = cros_ec_send_command(ec_dev, msg); in cros_ec_get_proto_info_legacy()
442 dev_dbg(ec_dev->dev, "EC failed to respond to v2 hello: %d\n", ret); in cros_ec_get_proto_info_legacy()
446 mapped = cros_ec_map_error(msg->result); in cros_ec_get_proto_info_legacy()
449 dev_err(ec_dev->dev, "EC responded to v2 hello with error: %d\n", msg->result); in cros_ec_get_proto_info_legacy()
454 ret = -EPROTO; in cros_ec_get_proto_info_legacy()
458 response = (struct ec_response_hello *)msg->data; in cros_ec_get_proto_info_legacy()
459 if (response->out_data != 0xa1b2c3d4) { in cros_ec_get_proto_info_legacy()
460 dev_err(ec_dev->dev, in cros_ec_get_proto_info_legacy()
462 response->out_data); in cros_ec_get_proto_info_legacy()
463 ret = -EBADMSG; in cros_ec_get_proto_info_legacy()
467 ec_dev->max_request = EC_PROTO2_MAX_PARAM_SIZE; in cros_ec_get_proto_info_legacy()
468 ec_dev->max_response = EC_PROTO2_MAX_PARAM_SIZE; in cros_ec_get_proto_info_legacy()
469 ec_dev->max_passthru = 0; in cros_ec_get_proto_info_legacy()
470 ec_dev->pkt_xfer = NULL; in cros_ec_get_proto_info_legacy()
471 ec_dev->din_size = EC_PROTO2_MSG_BYTES; in cros_ec_get_proto_info_legacy()
472 ec_dev->dout_size = EC_PROTO2_MSG_BYTES; in cros_ec_get_proto_info_legacy()
474 dev_dbg(ec_dev->dev, "falling back to proto v2\n"); in cros_ec_get_proto_info_legacy()
477 kfree(msg); in cros_ec_get_proto_info_legacy()
493 * the caller has ec_dev->lock mutex or the caller knows there is
500 struct cros_ec_command *msg; in cros_ec_get_host_command_version_mask() local
503 msg = kmalloc(sizeof(*msg) + max(sizeof(*rver), sizeof(*pver)), in cros_ec_get_host_command_version_mask()
505 if (!msg) in cros_ec_get_host_command_version_mask()
506 return -ENOMEM; in cros_ec_get_host_command_version_mask()
508 msg->version = 0; in cros_ec_get_host_command_version_mask()
509 msg->command = EC_CMD_GET_CMD_VERSIONS; in cros_ec_get_host_command_version_mask()
510 msg->insize = sizeof(*rver); in cros_ec_get_host_command_version_mask()
511 msg->outsize = sizeof(*pver); in cros_ec_get_host_command_version_mask()
513 pver = (struct ec_params_get_cmd_versions *)msg->data; in cros_ec_get_host_command_version_mask()
514 pver->cmd = cmd; in cros_ec_get_host_command_version_mask()
516 ret = cros_ec_send_command(ec_dev, msg); in cros_ec_get_host_command_version_mask()
520 mapped = cros_ec_map_error(msg->result); in cros_ec_get_host_command_version_mask()
527 ret = -EPROTO; in cros_ec_get_host_command_version_mask()
531 rver = (struct ec_response_get_cmd_versions *)msg->data; in cros_ec_get_host_command_version_mask()
532 *mask = rver->version_mask; in cros_ec_get_host_command_version_mask()
535 kfree(msg); in cros_ec_get_host_command_version_mask()
540 * cros_ec_query_all() - Query the protocol version supported by the
548 struct device *dev = ec_dev->dev; in cros_ec_query_all()
565 ec_dev->proto_version = EC_PROTO_VERSION_UNKNOWN; in cros_ec_query_all()
566 dev_dbg(ec_dev->dev, "EC query failed: %d\n", ret); in cros_ec_query_all()
571 devm_kfree(dev, ec_dev->din); in cros_ec_query_all()
572 devm_kfree(dev, ec_dev->dout); in cros_ec_query_all()
574 ec_dev->din = devm_kzalloc(dev, ec_dev->din_size, GFP_KERNEL); in cros_ec_query_all()
575 if (!ec_dev->din) { in cros_ec_query_all()
576 ret = -ENOMEM; in cros_ec_query_all()
580 ec_dev->dout = devm_kzalloc(dev, ec_dev->dout_size, GFP_KERNEL); in cros_ec_query_all()
581 if (!ec_dev->dout) { in cros_ec_query_all()
582 devm_kfree(dev, ec_dev->din); in cros_ec_query_all()
583 ret = -ENOMEM; in cros_ec_query_all()
590 ec_dev->mkbp_event_supported = 0; in cros_ec_query_all()
592 ec_dev->mkbp_event_supported = fls(ver_mask); in cros_ec_query_all()
594 dev_dbg(ec_dev->dev, "MKBP support version %u\n", ec_dev->mkbp_event_supported - 1); in cros_ec_query_all()
599 ec_dev->host_sleep_v1 = (ret == 0 && (ver_mask & EC_VER_MASK(1))); in cros_ec_query_all()
602 ret = cros_ec_get_host_event_wake_mask(ec_dev, &ec_dev->host_event_wake_mask); in cros_ec_query_all()
607 * battery, AC status, and power-state events, because (a) in cros_ec_query_all()
613 ec_dev->host_event_wake_mask = U32_MAX & in cros_ec_query_all()
625 if (ret != -EOPNOTSUPP) in cros_ec_query_all()
626 dev_err(ec_dev->dev, in cros_ec_query_all()
638 * cros_ec_cmd_xfer() - Send a command to the ChromeOS EC.
640 * @msg: Message to write.
645 * in-kernel users will want to use cros_ec_cmd_xfer_status() instead since
649 * >0 - EC command was executed successfully. The return value is the number
651 * =0 - EC communication was successful. EC command execution results are
652 * reported in msg->result. The result will be EC_RES_SUCCESS if the
655 * <0 - EC communication error. Return value is the Linux error code.
657 int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev, struct cros_ec_command *msg) in cros_ec_cmd_xfer() argument
661 mutex_lock(&ec_dev->lock); in cros_ec_cmd_xfer()
662 if (ec_dev->proto_version == EC_PROTO_VERSION_UNKNOWN) { in cros_ec_cmd_xfer()
665 dev_err(ec_dev->dev, in cros_ec_cmd_xfer()
667 mutex_unlock(&ec_dev->lock); in cros_ec_cmd_xfer()
672 if (msg->insize > ec_dev->max_response) { in cros_ec_cmd_xfer()
673 dev_dbg(ec_dev->dev, "clamping message receive buffer\n"); in cros_ec_cmd_xfer()
674 msg->insize = ec_dev->max_response; in cros_ec_cmd_xfer()
677 if (msg->command < EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX)) { in cros_ec_cmd_xfer()
678 if (msg->outsize > ec_dev->max_request) { in cros_ec_cmd_xfer()
679 dev_err(ec_dev->dev, in cros_ec_cmd_xfer()
680 "request of size %u is too big (max: %u)\n", in cros_ec_cmd_xfer()
681 msg->outsize, in cros_ec_cmd_xfer()
682 ec_dev->max_request); in cros_ec_cmd_xfer()
683 mutex_unlock(&ec_dev->lock); in cros_ec_cmd_xfer()
684 return -EMSGSIZE; in cros_ec_cmd_xfer()
687 if (msg->outsize > ec_dev->max_passthru) { in cros_ec_cmd_xfer()
688 dev_err(ec_dev->dev, in cros_ec_cmd_xfer()
689 "passthru rq of size %u is too big (max: %u)\n", in cros_ec_cmd_xfer()
690 msg->outsize, in cros_ec_cmd_xfer()
691 ec_dev->max_passthru); in cros_ec_cmd_xfer()
692 mutex_unlock(&ec_dev->lock); in cros_ec_cmd_xfer()
693 return -EMSGSIZE; in cros_ec_cmd_xfer()
697 ret = cros_ec_send_command(ec_dev, msg); in cros_ec_cmd_xfer()
698 mutex_unlock(&ec_dev->lock); in cros_ec_cmd_xfer()
705 * cros_ec_cmd_xfer_status() - Send a command to the ChromeOS EC.
707 * @msg: Message to write.
714 * >=0 - The number of bytes transferred.
715 * <0 - Linux error code
718 struct cros_ec_command *msg) in cros_ec_cmd_xfer_status() argument
722 ret = cros_ec_cmd_xfer(ec_dev, msg); in cros_ec_cmd_xfer_status()
726 mapped = cros_ec_map_error(msg->result); in cros_ec_cmd_xfer_status()
728 dev_dbg(ec_dev->dev, "Command result (err: %d [%d])\n", in cros_ec_cmd_xfer_status()
729 msg->result, mapped); in cros_ec_cmd_xfer_status()
738 struct cros_ec_command *msg, in get_next_event_xfer() argument
744 msg->version = version; in get_next_event_xfer()
745 msg->command = EC_CMD_GET_NEXT_EVENT; in get_next_event_xfer()
746 msg->insize = size; in get_next_event_xfer()
747 msg->outsize = 0; in get_next_event_xfer()
749 ret = cros_ec_cmd_xfer_status(ec_dev, msg); in get_next_event_xfer()
751 ec_dev->event_size = ret - 1; in get_next_event_xfer()
752 ec_dev->event_data = *event; in get_next_event_xfer()
761 struct cros_ec_command msg; in get_next_event() member
764 struct cros_ec_command *msg = &buf.msg; in get_next_event() local
766 int cmd_version = ec_dev->mkbp_event_supported - 1; in get_next_event()
769 memset(msg, 0, sizeof(*msg)); in get_next_event()
770 if (ec_dev->suspended) { in get_next_event()
771 dev_dbg(ec_dev->dev, "Device suspended.\n"); in get_next_event()
772 return -EHOSTDOWN; in get_next_event()
781 * The max version we support is v3. So, we speak v3 even if the in get_next_event()
788 return get_next_event_xfer(ec_dev, msg, event, cmd_version, size); in get_next_event()
794 sizeof(ec_dev->event_data.data)]; in get_keyboard_state_event()
795 struct cros_ec_command *msg = (struct cros_ec_command *)&buffer; in get_keyboard_state_event() local
797 msg->version = 0; in get_keyboard_state_event()
798 msg->command = EC_CMD_MKBP_STATE; in get_keyboard_state_event()
799 msg->insize = sizeof(ec_dev->event_data.data); in get_keyboard_state_event()
800 msg->outsize = 0; in get_keyboard_state_event()
802 ec_dev->event_size = cros_ec_cmd_xfer_status(ec_dev, msg); in get_keyboard_state_event()
803 ec_dev->event_data.event_type = EC_MKBP_EVENT_KEY_MATRIX; in get_keyboard_state_event()
804 memcpy(&ec_dev->event_data.data, msg->data, in get_keyboard_state_event()
805 sizeof(ec_dev->event_data.data)); in get_keyboard_state_event()
807 return ec_dev->event_size; in get_keyboard_state_event()
811 * cros_ec_get_next_event() - Fetch next event from the ChromeOS EC.
826 * written out to @ec_dev->event_data.event_type on success.
853 if (!ec_dev->mkbp_event_supported) in cros_ec_get_next_event()
858 * -ENOPROTOOPT is returned when EC returns EC_RES_INVALID_VERSION. in cros_ec_get_next_event()
864 if (ret == -ENOPROTOOPT) { in cros_ec_get_next_event()
865 dev_dbg(ec_dev->dev, in cros_ec_get_next_event()
867 mutex_lock(&ec_dev->lock); in cros_ec_get_next_event()
871 mutex_unlock(&ec_dev->lock); in cros_ec_get_next_event()
880 return -ENOPROTOOPT; in cros_ec_get_next_event()
882 ec_dev->mkbp_event_supported = fls(ver_mask); in cros_ec_get_next_event()
883 dev_dbg(ec_dev->dev, "MKBP support version changed to %u\n", in cros_ec_get_next_event()
884 ec_dev->mkbp_event_supported - 1); in cros_ec_get_next_event()
894 *has_more_events = ec_dev->event_data.event_type & in cros_ec_get_next_event()
896 ec_dev->event_data.event_type &= EC_MKBP_EVENT_TYPE_MASK; in cros_ec_get_next_event()
899 event_type = ec_dev->event_data.event_type; in cros_ec_get_next_event()
903 * Sensor events need to be parsed by the sensor sub-device. in cros_ec_get_next_event()
912 /* Masked host-events should not count as wake events. */ in cros_ec_get_next_event()
913 if (!(host_event & ec_dev->host_event_wake_mask)) in cros_ec_get_next_event()
923 * cros_ec_get_host_event() - Return a mask of event set by the ChromeOS EC.
930 * Return: 0 on error or non-zero bitmask of one or more EC_HOST_EVENT_*.
936 if (!ec_dev->mkbp_event_supported) in cros_ec_get_host_event()
939 if (ec_dev->event_data.event_type != EC_MKBP_EVENT_HOST_EVENT) in cros_ec_get_host_event()
942 if (ec_dev->event_size != sizeof(host_event)) { in cros_ec_get_host_event()
943 dev_warn(ec_dev->dev, "Invalid host event size\n"); in cros_ec_get_host_event()
947 host_event = get_unaligned_le32(&ec_dev->event_data.data.host_event); in cros_ec_get_host_event()
954 * cros_ec_check_features() - Test for the presence of EC features
966 struct ec_response_get_features *features = &ec->features; in cros_ec_check_features()
969 if (features->flags[0] == -1U && features->flags[1] == -1U) { in cros_ec_check_features()
971 ret = cros_ec_cmd(ec->ec_dev, 0, EC_CMD_GET_FEATURES + ec->cmd_offset, in cros_ec_check_features()
974 dev_warn(ec->dev, "cannot get EC features: %d\n", ret); in cros_ec_check_features()
978 dev_dbg(ec->dev, "EC features %08x %08x\n", in cros_ec_check_features()
979 features->flags[0], features->flags[1]); in cros_ec_check_features()
982 return !!(features->flags[feature / 32] & EC_FEATURE_MASK_0(feature)); in cros_ec_check_features()
987 * cros_ec_get_sensor_count() - Return the number of MEMS sensors supported.
1002 struct cros_ec_command *msg; in cros_ec_get_sensor_count() local
1003 struct cros_ec_device *ec_dev = ec->ec_dev; in cros_ec_get_sensor_count()
1006 msg = kzalloc(sizeof(*msg) + max(sizeof(*params), sizeof(*resp)), in cros_ec_get_sensor_count()
1008 if (!msg) in cros_ec_get_sensor_count()
1009 return -ENOMEM; in cros_ec_get_sensor_count()
1011 msg->version = 1; in cros_ec_get_sensor_count()
1012 msg->command = EC_CMD_MOTION_SENSE_CMD + ec->cmd_offset; in cros_ec_get_sensor_count()
1013 msg->outsize = sizeof(*params); in cros_ec_get_sensor_count()
1014 msg->insize = sizeof(*resp); in cros_ec_get_sensor_count()
1016 params = (struct ec_params_motion_sense *)msg->data; in cros_ec_get_sensor_count()
1017 params->cmd = MOTIONSENSE_CMD_DUMP; in cros_ec_get_sensor_count()
1019 ret = cros_ec_cmd_xfer_status(ec->ec_dev, msg); in cros_ec_get_sensor_count()
1023 resp = (struct ec_response_motion_sense *)msg->data; in cros_ec_get_sensor_count()
1024 sensor_count = resp->dump.sensor_count; in cros_ec_get_sensor_count()
1026 kfree(msg); in cros_ec_get_sensor_count()
1032 if (sensor_count < 0 && ec->cmd_offset == 0 && ec_dev->cmd_readmem) { in cros_ec_get_sensor_count()
1033 ret = ec_dev->cmd_readmem(ec_dev, EC_MEMMAP_ACC_STATUS, in cros_ec_get_sensor_count()
1053 * cros_ec_cmd - Send a command to the EC.
1073 struct cros_ec_command *msg; in cros_ec_cmd() local
1076 msg = kzalloc(sizeof(*msg) + max(insize, outsize), GFP_KERNEL); in cros_ec_cmd()
1077 if (!msg) in cros_ec_cmd()
1078 return -ENOMEM; in cros_ec_cmd()
1080 msg->version = version; in cros_ec_cmd()
1081 msg->command = command; in cros_ec_cmd()
1082 msg->outsize = outsize; in cros_ec_cmd()
1083 msg->insize = insize; in cros_ec_cmd()
1086 memcpy(msg->data, outdata, outsize); in cros_ec_cmd()
1088 ret = cros_ec_cmd_xfer_status(ec_dev, msg); in cros_ec_cmd()
1093 memcpy(indata, msg->data, insize); in cros_ec_cmd()
1095 kfree(msg); in cros_ec_cmd()
1101 * cros_ec_cmd_readmem - Read from EC memory.
1115 return -EINVAL; in cros_ec_cmd_readmem()
1117 if (ec_dev->cmd_readmem) in cros_ec_cmd_readmem()
1118 return ec_dev->cmd_readmem(ec_dev, offset, size, dest); in cros_ec_cmd_readmem()
1128 * cros_ec_get_cmd_versions - Get supported version mask.
1152 if (ret == -EINVAL) in cros_ec_get_cmd_versions()