Lines Matching refs:ec_dev
56 static int prepare_tx(struct cros_ec_device *ec_dev, in prepare_tx() argument
64 if (msg->outsize + sizeof(*request) > ec_dev->dout_size) in prepare_tx()
67 out = ec_dev->dout; in prepare_tx()
89 static int prepare_tx_legacy(struct cros_ec_device *ec_dev, in prepare_tx_legacy() argument
99 out = ec_dev->dout; in prepare_tx_legacy()
111 static int cros_ec_xfer_command(struct cros_ec_device *ec_dev, struct cros_ec_command *msg) in cros_ec_xfer_command() argument
116 if (ec_dev->proto_version > 2) in cros_ec_xfer_command()
117 xfer_fxn = ec_dev->pkt_xfer; in cros_ec_xfer_command()
119 xfer_fxn = ec_dev->cmd_xfer; in cros_ec_xfer_command()
127 dev_err_once(ec_dev->dev, "missing EC transfer API, cannot send command\n"); in cros_ec_xfer_command()
132 ret = (*xfer_fxn)(ec_dev, msg); in cros_ec_xfer_command()
138 static int cros_ec_wait_until_complete(struct cros_ec_device *ec_dev, uint32_t *result) in cros_ec_wait_until_complete() argument
157 ret = cros_ec_xfer_command(ec_dev, msg); in cros_ec_wait_until_complete()
182 static int cros_ec_send_command(struct cros_ec_device *ec_dev, struct cros_ec_command *msg) in cros_ec_send_command() argument
184 int ret = cros_ec_xfer_command(ec_dev, msg); in cros_ec_send_command()
187 ret = cros_ec_wait_until_complete(ec_dev, &msg->result); in cros_ec_send_command()
202 int cros_ec_prepare_tx(struct cros_ec_device *ec_dev, in cros_ec_prepare_tx() argument
205 if (ec_dev->proto_version > 2) in cros_ec_prepare_tx()
206 return prepare_tx(ec_dev, msg); in cros_ec_prepare_tx()
208 return prepare_tx_legacy(ec_dev, msg); in cros_ec_prepare_tx()
225 int cros_ec_check_result(struct cros_ec_device *ec_dev, in cros_ec_check_result() argument
232 dev_dbg(ec_dev->dev, "command 0x%02x in progress\n", in cros_ec_check_result()
236 dev_dbg(ec_dev->dev, "command 0x%02x returned %d\n", in cros_ec_check_result()
255 static int cros_ec_get_host_event_wake_mask(struct cros_ec_device *ec_dev, uint32_t *mask) in cros_ec_get_host_event_wake_mask() argument
268 ret = cros_ec_send_command(ec_dev, msg); in cros_ec_get_host_event_wake_mask()
291 static int cros_ec_get_proto_info(struct cros_ec_device *ec_dev, int devidx) in cros_ec_get_proto_info() argument
297 ec_dev->proto_version = 3; in cros_ec_get_proto_info()
299 ec_dev->max_passthru = 0; in cros_ec_get_proto_info()
308 ret = cros_ec_send_command(ec_dev, msg); in cros_ec_get_proto_info()
317 ret = cros_ec_send_command(ec_dev, msg); in cros_ec_get_proto_info()
320 dev_dbg(ec_dev->dev, in cros_ec_get_proto_info()
341 ec_dev->max_request = info->max_request_packet_size - in cros_ec_get_proto_info()
343 ec_dev->max_response = info->max_response_packet_size - in cros_ec_get_proto_info()
345 ec_dev->proto_version = min(EC_HOST_REQUEST_VERSION, in cros_ec_get_proto_info()
347 ec_dev->din_size = info->max_response_packet_size + EC_MAX_RESPONSE_OVERHEAD; in cros_ec_get_proto_info()
348 ec_dev->dout_size = info->max_request_packet_size + EC_MAX_REQUEST_OVERHEAD; in cros_ec_get_proto_info()
350 dev_dbg(ec_dev->dev, "using proto v%u\n", ec_dev->proto_version); in cros_ec_get_proto_info()
353 ec_dev->max_passthru = info->max_request_packet_size - in cros_ec_get_proto_info()
356 dev_dbg(ec_dev->dev, "found PD chip\n"); in cros_ec_get_proto_info()
359 dev_dbg(ec_dev->dev, "unknown passthru index: %d\n", devidx); in cros_ec_get_proto_info()
369 static int cros_ec_get_proto_info_legacy(struct cros_ec_device *ec_dev) in cros_ec_get_proto_info_legacy() argument
376 ec_dev->proto_version = 2; in cros_ec_get_proto_info_legacy()
389 ret = cros_ec_send_command(ec_dev, msg); in cros_ec_get_proto_info_legacy()
391 dev_dbg(ec_dev->dev, "EC failed to respond to v2 hello: %d\n", ret); in cros_ec_get_proto_info_legacy()
398 dev_err(ec_dev->dev, "EC responded to v2 hello with error: %d\n", msg->result); in cros_ec_get_proto_info_legacy()
409 dev_err(ec_dev->dev, in cros_ec_get_proto_info_legacy()
416 ec_dev->max_request = EC_PROTO2_MAX_PARAM_SIZE; in cros_ec_get_proto_info_legacy()
417 ec_dev->max_response = EC_PROTO2_MAX_PARAM_SIZE; in cros_ec_get_proto_info_legacy()
418 ec_dev->max_passthru = 0; in cros_ec_get_proto_info_legacy()
419 ec_dev->pkt_xfer = NULL; in cros_ec_get_proto_info_legacy()
420 ec_dev->din_size = EC_PROTO2_MSG_BYTES; in cros_ec_get_proto_info_legacy()
421 ec_dev->dout_size = EC_PROTO2_MSG_BYTES; in cros_ec_get_proto_info_legacy()
423 dev_dbg(ec_dev->dev, "falling back to proto v2\n"); in cros_ec_get_proto_info_legacy()
445 static int cros_ec_get_host_command_version_mask(struct cros_ec_device *ec_dev, u16 cmd, u32 *mask) in cros_ec_get_host_command_version_mask() argument
465 ret = cros_ec_send_command(ec_dev, msg); in cros_ec_get_host_command_version_mask()
495 int cros_ec_query_all(struct cros_ec_device *ec_dev) in cros_ec_query_all() argument
497 struct device *dev = ec_dev->dev; in cros_ec_query_all()
502 if (!cros_ec_get_proto_info(ec_dev, CROS_EC_DEV_EC_INDEX)) { in cros_ec_query_all()
504 cros_ec_get_proto_info(ec_dev, CROS_EC_DEV_PD_INDEX); in cros_ec_query_all()
507 ret = cros_ec_get_proto_info_legacy(ec_dev); in cros_ec_query_all()
514 ec_dev->proto_version = EC_PROTO_VERSION_UNKNOWN; in cros_ec_query_all()
515 dev_dbg(ec_dev->dev, "EC query failed: %d\n", ret); in cros_ec_query_all()
520 devm_kfree(dev, ec_dev->din); in cros_ec_query_all()
521 devm_kfree(dev, ec_dev->dout); in cros_ec_query_all()
523 ec_dev->din = devm_kzalloc(dev, ec_dev->din_size, GFP_KERNEL); in cros_ec_query_all()
524 if (!ec_dev->din) { in cros_ec_query_all()
529 ec_dev->dout = devm_kzalloc(dev, ec_dev->dout_size, GFP_KERNEL); in cros_ec_query_all()
530 if (!ec_dev->dout) { in cros_ec_query_all()
531 devm_kfree(dev, ec_dev->din); in cros_ec_query_all()
537 ret = cros_ec_get_host_command_version_mask(ec_dev, EC_CMD_GET_NEXT_EVENT, &ver_mask); in cros_ec_query_all()
539 ec_dev->mkbp_event_supported = 0; in cros_ec_query_all()
541 ec_dev->mkbp_event_supported = fls(ver_mask); in cros_ec_query_all()
543 dev_dbg(ec_dev->dev, "MKBP support version %u\n", ec_dev->mkbp_event_supported - 1); in cros_ec_query_all()
547 ret = cros_ec_get_host_command_version_mask(ec_dev, EC_CMD_HOST_SLEEP_EVENT, &ver_mask); in cros_ec_query_all()
548 ec_dev->host_sleep_v1 = (ret == 0 && (ver_mask & EC_VER_MASK(1))); in cros_ec_query_all()
551 ret = cros_ec_get_host_event_wake_mask(ec_dev, &ec_dev->host_event_wake_mask); in cros_ec_query_all()
562 ec_dev->host_event_wake_mask = U32_MAX & in cros_ec_query_all()
575 dev_err(ec_dev->dev, in cros_ec_query_all()
606 int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev, struct cros_ec_command *msg) in cros_ec_cmd_xfer() argument
610 mutex_lock(&ec_dev->lock); in cros_ec_cmd_xfer()
611 if (ec_dev->proto_version == EC_PROTO_VERSION_UNKNOWN) { in cros_ec_cmd_xfer()
612 ret = cros_ec_query_all(ec_dev); in cros_ec_cmd_xfer()
614 dev_err(ec_dev->dev, in cros_ec_cmd_xfer()
616 mutex_unlock(&ec_dev->lock); in cros_ec_cmd_xfer()
621 if (msg->insize > ec_dev->max_response) { in cros_ec_cmd_xfer()
622 dev_dbg(ec_dev->dev, "clamping message receive buffer\n"); in cros_ec_cmd_xfer()
623 msg->insize = ec_dev->max_response; in cros_ec_cmd_xfer()
627 if (msg->outsize > ec_dev->max_request) { in cros_ec_cmd_xfer()
628 dev_err(ec_dev->dev, in cros_ec_cmd_xfer()
631 ec_dev->max_request); in cros_ec_cmd_xfer()
632 mutex_unlock(&ec_dev->lock); in cros_ec_cmd_xfer()
636 if (msg->outsize > ec_dev->max_passthru) { in cros_ec_cmd_xfer()
637 dev_err(ec_dev->dev, in cros_ec_cmd_xfer()
640 ec_dev->max_passthru); in cros_ec_cmd_xfer()
641 mutex_unlock(&ec_dev->lock); in cros_ec_cmd_xfer()
646 ret = cros_ec_send_command(ec_dev, msg); in cros_ec_cmd_xfer()
647 mutex_unlock(&ec_dev->lock); in cros_ec_cmd_xfer()
666 int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev, in cros_ec_cmd_xfer_status() argument
671 ret = cros_ec_cmd_xfer(ec_dev, msg); in cros_ec_cmd_xfer_status()
677 dev_dbg(ec_dev->dev, "Command result (err: %d [%d])\n", in cros_ec_cmd_xfer_status()
686 static int get_next_event_xfer(struct cros_ec_device *ec_dev, in get_next_event_xfer() argument
698 ret = cros_ec_cmd_xfer_status(ec_dev, msg); in get_next_event_xfer()
700 ec_dev->event_size = ret - 1; in get_next_event_xfer()
701 ec_dev->event_data = *event; in get_next_event_xfer()
707 static int get_next_event(struct cros_ec_device *ec_dev) in get_next_event() argument
715 int cmd_version = ec_dev->mkbp_event_supported - 1; in get_next_event()
719 if (ec_dev->suspended) { in get_next_event()
720 dev_dbg(ec_dev->dev, "Device suspended.\n"); in get_next_event()
737 return get_next_event_xfer(ec_dev, msg, event, cmd_version, size); in get_next_event()
740 static int get_keyboard_state_event(struct cros_ec_device *ec_dev) in get_keyboard_state_event() argument
743 sizeof(ec_dev->event_data.data)]; in get_keyboard_state_event()
748 msg->insize = sizeof(ec_dev->event_data.data); in get_keyboard_state_event()
751 ec_dev->event_size = cros_ec_cmd_xfer_status(ec_dev, msg); in get_keyboard_state_event()
752 ec_dev->event_data.event_type = EC_MKBP_EVENT_KEY_MATRIX; in get_keyboard_state_event()
753 memcpy(&ec_dev->event_data.data, msg->data, in get_keyboard_state_event()
754 sizeof(ec_dev->event_data.data)); in get_keyboard_state_event()
756 return ec_dev->event_size; in get_keyboard_state_event()
777 int cros_ec_get_next_event(struct cros_ec_device *ec_dev, in cros_ec_get_next_event() argument
802 if (!ec_dev->mkbp_event_supported) in cros_ec_get_next_event()
803 return get_keyboard_state_event(ec_dev); in cros_ec_get_next_event()
805 ret = get_next_event(ec_dev); in cros_ec_get_next_event()
814 dev_dbg(ec_dev->dev, in cros_ec_get_next_event()
816 mutex_lock(&ec_dev->lock); in cros_ec_get_next_event()
817 ret = cros_ec_get_host_command_version_mask(ec_dev, in cros_ec_get_next_event()
820 mutex_unlock(&ec_dev->lock); in cros_ec_get_next_event()
831 ec_dev->mkbp_event_supported = fls(ver_mask); in cros_ec_get_next_event()
832 dev_dbg(ec_dev->dev, "MKBP support version changed to %u\n", in cros_ec_get_next_event()
833 ec_dev->mkbp_event_supported - 1); in cros_ec_get_next_event()
836 ret = get_next_event(ec_dev); in cros_ec_get_next_event()
843 *has_more_events = ec_dev->event_data.event_type & in cros_ec_get_next_event()
845 ec_dev->event_data.event_type &= EC_MKBP_EVENT_TYPE_MASK; in cros_ec_get_next_event()
848 event_type = ec_dev->event_data.event_type; in cros_ec_get_next_event()
849 host_event = cros_ec_get_host_event(ec_dev); in cros_ec_get_next_event()
862 if (!(host_event & ec_dev->host_event_wake_mask)) in cros_ec_get_next_event()
881 u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev) in cros_ec_get_host_event() argument
885 if (!ec_dev->mkbp_event_supported) in cros_ec_get_host_event()
888 if (ec_dev->event_data.event_type != EC_MKBP_EVENT_HOST_EVENT) in cros_ec_get_host_event()
891 if (ec_dev->event_size != sizeof(host_event)) { in cros_ec_get_host_event()
892 dev_warn(ec_dev->dev, "Invalid host event size\n"); in cros_ec_get_host_event()
896 host_event = get_unaligned_le32(&ec_dev->event_data.data.host_event); in cros_ec_get_host_event()
920 ret = cros_ec_cmd(ec->ec_dev, 0, EC_CMD_GET_FEATURES + ec->cmd_offset, in cros_ec_check_features()
952 struct cros_ec_device *ec_dev = ec->ec_dev; in cros_ec_get_sensor_count() local
968 ret = cros_ec_cmd_xfer_status(ec->ec_dev, msg); in cros_ec_get_sensor_count()
981 if (sensor_count < 0 && ec->cmd_offset == 0 && ec_dev->cmd_readmem) { in cros_ec_get_sensor_count()
982 ret = ec_dev->cmd_readmem(ec_dev, EC_MEMMAP_ACC_STATUS, in cros_ec_get_sensor_count()
1014 int cros_ec_cmd(struct cros_ec_device *ec_dev, in cros_ec_cmd() argument
1037 ret = cros_ec_cmd_xfer_status(ec_dev, msg); in cros_ec_cmd()
1059 int cros_ec_cmd_readmem(struct cros_ec_device *ec_dev, u8 offset, u8 size, void *dest) in cros_ec_cmd_readmem() argument
1066 if (ec_dev->cmd_readmem) in cros_ec_cmd_readmem()
1067 return ec_dev->cmd_readmem(ec_dev, offset, size, dest); in cros_ec_cmd_readmem()
1071 return cros_ec_cmd(ec_dev, 0, EC_CMD_READ_MEMMAP, in cros_ec_cmd_readmem()
1084 int cros_ec_get_cmd_versions(struct cros_ec_device *ec_dev, u16 cmd) in cros_ec_get_cmd_versions() argument
1093 ret = cros_ec_cmd(ec_dev, 0, EC_CMD_GET_CMD_VERSIONS, in cros_ec_get_cmd_versions()
1097 ret = cros_ec_cmd(ec_dev, 1, EC_CMD_GET_CMD_VERSIONS, in cros_ec_get_cmd_versions()