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462 lines
10 KiB
462 lines
10 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Proprietary commands extension for STMicroelectronics NFC NCI Chip |
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* |
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* Copyright (C) 2014-2015 STMicroelectronics SAS. All rights reserved. |
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*/ |
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#include <net/genetlink.h> |
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#include <linux/module.h> |
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#include <linux/nfc.h> |
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#include <linux/delay.h> |
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#include <net/nfc/nci_core.h> |
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#include "st-nci.h" |
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#define ST_NCI_HCI_DM_GETDATA 0x10 |
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#define ST_NCI_HCI_DM_PUTDATA 0x11 |
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#define ST_NCI_HCI_DM_LOAD 0x12 |
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#define ST_NCI_HCI_DM_GETINFO 0x13 |
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#define ST_NCI_HCI_DM_FWUPD_START 0x14 |
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#define ST_NCI_HCI_DM_FWUPD_STOP 0x15 |
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#define ST_NCI_HCI_DM_UPDATE_AID 0x20 |
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#define ST_NCI_HCI_DM_RESET 0x3e |
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#define ST_NCI_HCI_DM_FIELD_GENERATOR 0x32 |
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#define ST_NCI_HCI_DM_VDC_MEASUREMENT_VALUE 0x33 |
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#define ST_NCI_HCI_DM_VDC_VALUE_COMPARISON 0x34 |
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#define ST_NCI_FACTORY_MODE_ON 1 |
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#define ST_NCI_FACTORY_MODE_OFF 0 |
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#define ST_NCI_EVT_POST_DATA 0x02 |
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struct get_param_data { |
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u8 gate; |
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u8 data; |
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} __packed; |
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static int st_nci_factory_mode(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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struct st_nci_info *info = nci_get_drvdata(ndev); |
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if (data_len != 1) |
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return -EINVAL; |
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pr_debug("factory mode: %x\n", ((u8 *)data)[0]); |
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switch (((u8 *)data)[0]) { |
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case ST_NCI_FACTORY_MODE_ON: |
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test_and_set_bit(ST_NCI_FACTORY_MODE, &info->flags); |
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break; |
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case ST_NCI_FACTORY_MODE_OFF: |
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clear_bit(ST_NCI_FACTORY_MODE, &info->flags); |
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break; |
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default: |
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return -EINVAL; |
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} |
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return 0; |
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} |
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static int st_nci_hci_clear_all_pipes(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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return nci_hci_clear_all_pipes(ndev); |
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} |
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static int st_nci_hci_dm_put_data(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, |
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ST_NCI_HCI_DM_PUTDATA, data, |
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data_len, NULL); |
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} |
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static int st_nci_hci_dm_update_aid(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, |
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ST_NCI_HCI_DM_UPDATE_AID, data, data_len, NULL); |
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} |
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static int st_nci_hci_dm_get_info(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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int r; |
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struct sk_buff *msg, *skb; |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_GETINFO, |
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data, data_len, &skb); |
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if (r) |
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return r; |
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msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI, |
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HCI_DM_GET_INFO, skb->len); |
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if (!msg) { |
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r = -ENOMEM; |
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goto free_skb; |
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} |
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if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) { |
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kfree_skb(msg); |
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r = -ENOBUFS; |
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goto free_skb; |
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} |
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r = nfc_vendor_cmd_reply(msg); |
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free_skb: |
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kfree_skb(skb); |
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return r; |
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} |
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static int st_nci_hci_dm_get_data(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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int r; |
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struct sk_buff *msg, *skb; |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_GETDATA, |
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data, data_len, &skb); |
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if (r) |
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return r; |
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msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI, |
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HCI_DM_GET_DATA, skb->len); |
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if (!msg) { |
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r = -ENOMEM; |
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goto free_skb; |
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} |
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if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) { |
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kfree_skb(msg); |
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r = -ENOBUFS; |
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goto free_skb; |
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} |
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r = nfc_vendor_cmd_reply(msg); |
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free_skb: |
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kfree_skb(skb); |
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return r; |
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} |
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static int st_nci_hci_dm_fwupd_start(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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int r; |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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dev->fw_download_in_progress = true; |
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r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, |
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ST_NCI_HCI_DM_FWUPD_START, data, data_len, NULL); |
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if (r) |
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dev->fw_download_in_progress = false; |
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return r; |
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} |
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static int st_nci_hci_dm_fwupd_end(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, |
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ST_NCI_HCI_DM_FWUPD_STOP, data, data_len, NULL); |
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} |
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static int st_nci_hci_dm_direct_load(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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if (dev->fw_download_in_progress) { |
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dev->fw_download_in_progress = false; |
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return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, |
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ST_NCI_HCI_DM_LOAD, data, data_len, NULL); |
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} |
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return -EPROTO; |
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} |
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static int st_nci_hci_dm_reset(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, |
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ST_NCI_HCI_DM_RESET, data, data_len, NULL); |
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msleep(200); |
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return 0; |
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} |
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static int st_nci_hci_get_param(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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int r; |
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struct sk_buff *msg, *skb; |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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struct get_param_data *param = (struct get_param_data *)data; |
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if (data_len < sizeof(struct get_param_data)) |
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return -EPROTO; |
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r = nci_hci_get_param(ndev, param->gate, param->data, &skb); |
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if (r) |
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return r; |
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msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI, |
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HCI_GET_PARAM, skb->len); |
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if (!msg) { |
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r = -ENOMEM; |
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goto free_skb; |
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} |
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if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) { |
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kfree_skb(msg); |
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r = -ENOBUFS; |
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goto free_skb; |
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} |
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r = nfc_vendor_cmd_reply(msg); |
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free_skb: |
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kfree_skb(skb); |
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return r; |
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} |
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static int st_nci_hci_dm_field_generator(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, |
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ST_NCI_HCI_DM_FIELD_GENERATOR, data, data_len, NULL); |
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} |
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static int st_nci_hci_dm_vdc_measurement_value(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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int r; |
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struct sk_buff *msg, *skb; |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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if (data_len != 4) |
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return -EPROTO; |
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r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, |
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ST_NCI_HCI_DM_VDC_MEASUREMENT_VALUE, |
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data, data_len, &skb); |
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if (r) |
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return r; |
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msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI, |
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HCI_DM_VDC_MEASUREMENT_VALUE, skb->len); |
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if (!msg) { |
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r = -ENOMEM; |
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goto free_skb; |
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} |
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if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) { |
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kfree_skb(msg); |
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r = -ENOBUFS; |
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goto free_skb; |
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} |
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r = nfc_vendor_cmd_reply(msg); |
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free_skb: |
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kfree_skb(skb); |
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return r; |
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} |
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static int st_nci_hci_dm_vdc_value_comparison(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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int r; |
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struct sk_buff *msg, *skb; |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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if (data_len != 2) |
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return -EPROTO; |
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r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, |
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ST_NCI_HCI_DM_VDC_VALUE_COMPARISON, |
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data, data_len, &skb); |
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if (r) |
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return r; |
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msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI, |
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HCI_DM_VDC_VALUE_COMPARISON, skb->len); |
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if (!msg) { |
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r = -ENOMEM; |
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goto free_skb; |
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} |
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if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) { |
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kfree_skb(msg); |
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r = -ENOBUFS; |
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goto free_skb; |
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} |
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r = nfc_vendor_cmd_reply(msg); |
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free_skb: |
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kfree_skb(skb); |
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return r; |
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} |
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static int st_nci_loopback(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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int r; |
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struct sk_buff *msg, *skb; |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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if (data_len <= 0) |
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return -EPROTO; |
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r = nci_nfcc_loopback(ndev, data, data_len, &skb); |
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if (r < 0) |
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return r; |
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msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI, |
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LOOPBACK, skb->len); |
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if (!msg) { |
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r = -ENOMEM; |
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goto free_skb; |
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} |
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if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) { |
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kfree_skb(msg); |
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r = -ENOBUFS; |
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goto free_skb; |
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} |
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r = nfc_vendor_cmd_reply(msg); |
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free_skb: |
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kfree_skb(skb); |
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return r; |
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} |
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static int st_nci_manufacturer_specific(struct nfc_dev *dev, void *data, |
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size_t data_len) |
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{ |
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struct sk_buff *msg; |
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struct nci_dev *ndev = nfc_get_drvdata(dev); |
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msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI, |
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MANUFACTURER_SPECIFIC, |
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sizeof(ndev->manufact_specific_info)); |
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if (!msg) |
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return -ENOMEM; |
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if (nla_put(msg, NFC_ATTR_VENDOR_DATA, sizeof(ndev->manufact_specific_info), |
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&ndev->manufact_specific_info)) { |
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kfree_skb(msg); |
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return -ENOBUFS; |
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} |
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return nfc_vendor_cmd_reply(msg); |
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} |
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static const struct nfc_vendor_cmd st_nci_vendor_cmds[] = { |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = FACTORY_MODE, |
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.doit = st_nci_factory_mode, |
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}, |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = HCI_CLEAR_ALL_PIPES, |
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.doit = st_nci_hci_clear_all_pipes, |
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}, |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = HCI_DM_PUT_DATA, |
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.doit = st_nci_hci_dm_put_data, |
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}, |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = HCI_DM_UPDATE_AID, |
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.doit = st_nci_hci_dm_update_aid, |
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}, |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = HCI_DM_GET_INFO, |
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.doit = st_nci_hci_dm_get_info, |
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}, |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = HCI_DM_GET_DATA, |
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.doit = st_nci_hci_dm_get_data, |
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}, |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = HCI_DM_DIRECT_LOAD, |
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.doit = st_nci_hci_dm_direct_load, |
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}, |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = HCI_DM_RESET, |
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.doit = st_nci_hci_dm_reset, |
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}, |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = HCI_GET_PARAM, |
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.doit = st_nci_hci_get_param, |
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}, |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = HCI_DM_FIELD_GENERATOR, |
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.doit = st_nci_hci_dm_field_generator, |
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}, |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = HCI_DM_FWUPD_START, |
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.doit = st_nci_hci_dm_fwupd_start, |
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}, |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = HCI_DM_FWUPD_END, |
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.doit = st_nci_hci_dm_fwupd_end, |
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}, |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = LOOPBACK, |
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.doit = st_nci_loopback, |
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}, |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = HCI_DM_VDC_MEASUREMENT_VALUE, |
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.doit = st_nci_hci_dm_vdc_measurement_value, |
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}, |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = HCI_DM_VDC_VALUE_COMPARISON, |
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.doit = st_nci_hci_dm_vdc_value_comparison, |
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}, |
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{ |
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.vendor_id = ST_NCI_VENDOR_OUI, |
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.subcmd = MANUFACTURER_SPECIFIC, |
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.doit = st_nci_manufacturer_specific, |
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}, |
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}; |
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int st_nci_vendor_cmds_init(struct nci_dev *ndev) |
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{ |
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return nfc_set_vendor_cmds(ndev->nfc_dev, st_nci_vendor_cmds, |
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sizeof(st_nci_vendor_cmds)); |
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} |
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EXPORT_SYMBOL(st_nci_vendor_cmds_init);
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