NFC: mei_phy: move all nfc logic from mei driver to nfc
move nfc logic to mei_phy module, we prefer as much as possible not to deal with a particualr client protocol in the mei generic infrasutcutre Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler
Greg Kroah-Hartman
Родитель
007d64eb22
Коммит
be9b720a0c
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@ -220,8 +220,7 @@ struct mei_cl *mei_cl_bus_find_cl_by_uuid(struct mei_device *dev,
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struct mei_cl_device *mei_cl_add_device(struct mei_device *dev,
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struct mei_me_client *me_cl,
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struct mei_cl *cl,
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char *name,
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struct mei_cl_ops *ops)
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char *name)
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{
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struct mei_cl_device *device;
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int status;
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@ -235,9 +234,8 @@ struct mei_cl_device *mei_cl_add_device(struct mei_device *dev,
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kfree(device);
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return NULL;
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}
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device->cl = cl;
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device->ops = ops;
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device->cl = cl;
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device->dev.parent = dev->dev;
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device->dev.bus = &mei_cl_bus_type;
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device->dev.type = &mei_cl_device_type;
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@ -294,7 +292,7 @@ void mei_cl_driver_unregister(struct mei_cl_driver *driver)
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}
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EXPORT_SYMBOL_GPL(mei_cl_driver_unregister);
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static ssize_t ___mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length,
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ssize_t __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length,
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bool blocking)
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{
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struct mei_device *dev;
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@ -408,16 +406,6 @@ out:
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return rets;
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}
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inline ssize_t __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length)
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{
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return ___mei_cl_send(cl, buf, length, 0);
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}
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inline ssize_t __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length)
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{
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return ___mei_cl_send(cl, buf, length, 1);
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}
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ssize_t mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length)
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{
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struct mei_cl *cl = device->cl;
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@ -425,23 +413,17 @@ ssize_t mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length)
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if (cl == NULL)
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return -ENODEV;
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if (device->ops && device->ops->send)
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return device->ops->send(device, buf, length);
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return __mei_cl_send(cl, buf, length);
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return __mei_cl_send(cl, buf, length, 1);
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}
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EXPORT_SYMBOL_GPL(mei_cl_send);
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ssize_t mei_cl_recv(struct mei_cl_device *device, u8 *buf, size_t length)
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{
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struct mei_cl *cl = device->cl;
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struct mei_cl *cl = device->cl;
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if (cl == NULL)
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return -ENODEV;
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if (device->ops && device->ops->recv)
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return device->ops->recv(device, buf, length);
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return __mei_cl_recv(cl, buf, length);
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}
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EXPORT_SYMBOL_GPL(mei_cl_recv);
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@ -522,10 +504,7 @@ int mei_cl_enable_device(struct mei_cl_device *device)
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if (device->event_cb)
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mei_cl_read_start(device->cl, 0, NULL);
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if (!device->ops || !device->ops->enable)
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return 0;
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return device->ops->enable(device);
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return 0;
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}
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EXPORT_SYMBOL_GPL(mei_cl_enable_device);
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@ -540,9 +519,6 @@ int mei_cl_disable_device(struct mei_cl_device *device)
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dev = cl->dev;
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if (device->ops && device->ops->disable)
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device->ops->disable(device);
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device->event_cb = NULL;
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mutex_lock(&dev->device_lock);
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@ -352,12 +352,11 @@ struct mei_cl_ops {
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struct mei_cl_device *mei_cl_add_device(struct mei_device *dev,
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struct mei_me_client *me_cl,
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struct mei_cl *cl,
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char *name,
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struct mei_cl_ops *ops);
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char *name);
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void mei_cl_remove_device(struct mei_cl_device *device);
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ssize_t __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length);
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ssize_t __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length);
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ssize_t __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length,
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bool blocking);
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ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length);
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void mei_cl_bus_rx_event(struct mei_cl *cl);
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void mei_cl_bus_remove_devices(struct mei_device *dev);
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@ -95,28 +95,21 @@ struct mei_nfc_hci_hdr {
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* @cl: NFC host client
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* @cl_info: NFC info host client
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* @init_work: perform connection to the info client
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* @send_wq: send completion wait queue
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* @fw_ivn: NFC Interface Version Number
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* @vendor_id: NFC manufacturer ID
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* @radio_type: NFC radio type
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* @bus_name: bus name
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*
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* @req_id: message counter
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* @recv_req_id: reception message counter
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*/
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struct mei_nfc_dev {
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struct mei_me_client *me_cl;
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struct mei_cl *cl;
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struct mei_cl *cl_info;
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struct work_struct init_work;
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wait_queue_head_t send_wq;
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u8 fw_ivn;
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u8 vendor_id;
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u8 radio_type;
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char *bus_name;
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u16 req_id;
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u16 recv_req_id;
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};
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/* UUIDs for NFC F/W clients */
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@ -202,73 +195,6 @@ static int mei_nfc_build_bus_name(struct mei_nfc_dev *ndev)
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return 0;
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}
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static int mei_nfc_connect(struct mei_nfc_dev *ndev)
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{
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struct mei_device *dev;
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struct mei_cl *cl;
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struct mei_nfc_cmd *cmd, *reply;
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struct mei_nfc_connect *connect;
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struct mei_nfc_connect_resp *connect_resp;
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size_t connect_length, connect_resp_length;
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int bytes_recv, ret;
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cl = ndev->cl;
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dev = cl->dev;
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connect_length = sizeof(struct mei_nfc_cmd) +
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sizeof(struct mei_nfc_connect);
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connect_resp_length = sizeof(struct mei_nfc_cmd) +
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sizeof(struct mei_nfc_connect_resp);
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cmd = kzalloc(connect_length, GFP_KERNEL);
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if (!cmd)
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return -ENOMEM;
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connect = (struct mei_nfc_connect *)cmd->data;
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reply = kzalloc(connect_resp_length, GFP_KERNEL);
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if (!reply) {
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kfree(cmd);
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return -ENOMEM;
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}
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connect_resp = (struct mei_nfc_connect_resp *)reply->data;
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cmd->command = MEI_NFC_CMD_MAINTENANCE;
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cmd->data_size = 3;
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cmd->sub_command = MEI_NFC_SUBCMD_CONNECT;
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connect->fw_ivn = ndev->fw_ivn;
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connect->vendor_id = ndev->vendor_id;
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ret = __mei_cl_send(cl, (u8 *)cmd, connect_length);
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if (ret < 0) {
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dev_err(dev->dev, "Could not send connect cmd\n");
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goto err;
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}
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bytes_recv = __mei_cl_recv(cl, (u8 *)reply, connect_resp_length);
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if (bytes_recv < 0) {
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dev_err(dev->dev, "Could not read connect response\n");
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ret = bytes_recv;
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goto err;
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}
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dev_info(dev->dev, "IVN 0x%x Vendor ID 0x%x\n",
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connect_resp->fw_ivn, connect_resp->vendor_id);
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dev_info(dev->dev, "ME FW %d.%d.%d.%d\n",
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connect_resp->me_major, connect_resp->me_minor,
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connect_resp->me_hotfix, connect_resp->me_build);
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ret = 0;
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err:
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kfree(reply);
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kfree(cmd);
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return ret;
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}
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static int mei_nfc_if_version(struct mei_nfc_dev *ndev)
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{
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struct mei_device *dev;
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@ -288,7 +214,7 @@ static int mei_nfc_if_version(struct mei_nfc_dev *ndev)
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cmd.data_size = 1;
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cmd.sub_command = MEI_NFC_SUBCMD_IF_VERSION;
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ret = __mei_cl_send(cl, (u8 *)&cmd, sizeof(struct mei_nfc_cmd));
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ret = __mei_cl_send(cl, (u8 *)&cmd, sizeof(struct mei_nfc_cmd), 1);
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if (ret < 0) {
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dev_err(dev->dev, "Could not send IF version cmd\n");
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return ret;
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@ -320,100 +246,6 @@ err:
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return ret;
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}
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static int mei_nfc_enable(struct mei_cl_device *cldev)
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{
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struct mei_device *dev;
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struct mei_nfc_dev *ndev;
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int ret;
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ndev = (struct mei_nfc_dev *)cldev->priv_data;
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dev = ndev->cl->dev;
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ret = mei_nfc_connect(ndev);
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if (ret < 0) {
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dev_err(dev->dev, "Could not connect to NFC");
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return ret;
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}
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return 0;
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}
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static int mei_nfc_disable(struct mei_cl_device *cldev)
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{
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return 0;
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}
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static int mei_nfc_send(struct mei_cl_device *cldev, u8 *buf, size_t length)
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{
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struct mei_device *dev;
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struct mei_nfc_dev *ndev;
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struct mei_nfc_hci_hdr *hdr;
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u8 *mei_buf;
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int err;
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ndev = (struct mei_nfc_dev *) cldev->priv_data;
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dev = ndev->cl->dev;
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err = -ENOMEM;
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mei_buf = kzalloc(length + MEI_NFC_HEADER_SIZE, GFP_KERNEL);
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if (!mei_buf)
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goto out;
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hdr = (struct mei_nfc_hci_hdr *) mei_buf;
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hdr->cmd = MEI_NFC_CMD_HCI_SEND;
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hdr->status = 0;
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hdr->req_id = ndev->req_id;
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hdr->reserved = 0;
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hdr->data_size = length;
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memcpy(mei_buf + MEI_NFC_HEADER_SIZE, buf, length);
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err = __mei_cl_send(ndev->cl, mei_buf, length + MEI_NFC_HEADER_SIZE);
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if (err < 0)
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goto out;
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if (!wait_event_interruptible_timeout(ndev->send_wq,
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ndev->recv_req_id == ndev->req_id, HZ)) {
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dev_err(dev->dev, "NFC MEI command timeout\n");
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err = -ETIME;
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} else {
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ndev->req_id++;
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}
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out:
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kfree(mei_buf);
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return err;
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}
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static int mei_nfc_recv(struct mei_cl_device *cldev, u8 *buf, size_t length)
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{
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struct mei_nfc_dev *ndev;
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struct mei_nfc_hci_hdr *hci_hdr;
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int received_length;
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ndev = (struct mei_nfc_dev *)cldev->priv_data;
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received_length = __mei_cl_recv(ndev->cl, buf, length);
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if (received_length < 0)
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return received_length;
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hci_hdr = (struct mei_nfc_hci_hdr *) buf;
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if (hci_hdr->cmd == MEI_NFC_CMD_HCI_SEND) {
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ndev->recv_req_id = hci_hdr->req_id;
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wake_up(&ndev->send_wq);
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return 0;
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}
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return received_length;
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}
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static struct mei_cl_ops nfc_ops = {
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.enable = mei_nfc_enable,
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.disable = mei_nfc_disable,
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.send = mei_nfc_send,
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.recv = mei_nfc_recv,
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};
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static void mei_nfc_init(struct work_struct *work)
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{
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struct mei_device *dev;
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@ -473,7 +305,7 @@ static void mei_nfc_init(struct work_struct *work)
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}
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cldev = mei_cl_add_device(dev, ndev->me_cl, ndev->cl,
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ndev->bus_name, &nfc_ops);
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ndev->bus_name);
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if (!cldev) {
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dev_err(dev->dev, "Could not add the NFC device to the MEI bus\n");
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@ -539,10 +371,7 @@ int mei_nfc_host_init(struct mei_device *dev, struct mei_me_client *me_cl)
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ndev->cl = cl;
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ndev->req_id = 1;
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INIT_WORK(&ndev->init_work, mei_nfc_init);
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init_waitqueue_head(&ndev->send_wq);
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schedule_work(&ndev->init_work);
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return 0;
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@ -24,7 +24,52 @@
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#include "mei_phy.h"
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struct mei_nfc_hdr {
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struct mei_nfc_cmd {
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u8 command;
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u8 status;
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u16 req_id;
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u32 reserved;
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u16 data_size;
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u8 sub_command;
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u8 data[];
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} __packed;
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struct mei_nfc_reply {
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u8 command;
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u8 status;
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u16 req_id;
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u32 reserved;
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u16 data_size;
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u8 sub_command;
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u8 reply_status;
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u8 data[];
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} __packed;
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struct mei_nfc_if_version {
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u8 radio_version_sw[3];
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u8 reserved[3];
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u8 radio_version_hw[3];
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u8 i2c_addr;
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u8 fw_ivn;
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u8 vendor_id;
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u8 radio_type;
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} __packed;
|
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|
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struct mei_nfc_connect {
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u8 fw_ivn;
|
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u8 vendor_id;
|
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} __packed;
|
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|
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struct mei_nfc_connect_resp {
|
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u8 fw_ivn;
|
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u8 vendor_id;
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u16 me_major;
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u16 me_minor;
|
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u16 me_hotfix;
|
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u16 me_build;
|
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} __packed;
|
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|
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struct mei_nfc_hci_hdr {
|
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u8 cmd;
|
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u8 status;
|
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u16 req_id;
|
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|
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@ -32,6 +77,16 @@ struct mei_nfc_hdr {
|
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u16 data_size;
|
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} __packed;
|
||||
|
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#define MEI_NFC_CMD_MAINTENANCE 0x00
|
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#define MEI_NFC_CMD_HCI_SEND 0x01
|
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#define MEI_NFC_CMD_HCI_RECV 0x02
|
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|
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#define MEI_NFC_SUBCMD_CONNECT 0x00
|
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#define MEI_NFC_SUBCMD_IF_VERSION 0x01
|
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|
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#define MEI_NFC_HEADER_SIZE 10
|
||||
|
||||
|
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#define MEI_NFC_MAX_READ (MEI_NFC_HEADER_SIZE + MEI_NFC_MAX_HCI_PAYLOAD)
|
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|
||||
#define MEI_DUMP_SKB_IN(info, skb) \
|
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|
|
@ -45,51 +100,156 @@ do { \
|
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do { \
|
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pr_debug("%s:\n", info); \
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print_hex_dump_debug("mei out: ", DUMP_PREFIX_OFFSET, \
|
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16, 1, (skb)->data, (skb)->len, false); \
|
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16, 1, (skb)->data, (skb)->len, false); \
|
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} while (0)
|
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|
||||
int nfc_mei_phy_enable(void *phy_id)
|
||||
|
||||
static int mei_nfc_if_version(struct nfc_mei_phy *phy)
|
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{
|
||||
int r;
|
||||
struct nfc_mei_phy *phy = phy_id;
|
||||
|
||||
struct mei_nfc_cmd cmd;
|
||||
struct mei_nfc_reply *reply = NULL;
|
||||
struct mei_nfc_if_version *version;
|
||||
size_t if_version_length;
|
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int bytes_recv, r;
|
||||
|
||||
pr_info("%s\n", __func__);
|
||||
|
||||
if (phy->powered == 1)
|
||||
return 0;
|
||||
memset(&cmd, 0, sizeof(struct mei_nfc_cmd));
|
||||
cmd.command = MEI_NFC_CMD_MAINTENANCE;
|
||||
cmd.data_size = 1;
|
||||
cmd.sub_command = MEI_NFC_SUBCMD_IF_VERSION;
|
||||
|
||||
r = mei_cl_enable_device(phy->device);
|
||||
r = mei_cl_send(phy->device, (u8 *)&cmd, sizeof(struct mei_nfc_cmd));
|
||||
if (r < 0) {
|
||||
pr_err("Could not enable device\n");
|
||||
pr_err("Could not send IF version cmd\n");
|
||||
return r;
|
||||
}
|
||||
|
||||
r = mei_cl_register_event_cb(phy->device, nfc_mei_event_cb, phy);
|
||||
if (r) {
|
||||
pr_err("Event cb registration failed\n");
|
||||
mei_cl_disable_device(phy->device);
|
||||
phy->powered = 0;
|
||||
/* to be sure on the stack we alloc memory */
|
||||
if_version_length = sizeof(struct mei_nfc_reply) +
|
||||
sizeof(struct mei_nfc_if_version);
|
||||
|
||||
return r;
|
||||
reply = kzalloc(if_version_length, GFP_KERNEL);
|
||||
if (!reply)
|
||||
return -ENOMEM;
|
||||
|
||||
bytes_recv = mei_cl_recv(phy->device, (u8 *)reply, if_version_length);
|
||||
if (bytes_recv < 0 || bytes_recv < sizeof(struct mei_nfc_reply)) {
|
||||
pr_err("Could not read IF version\n");
|
||||
r = -EIO;
|
||||
goto err;
|
||||
}
|
||||
|
||||
phy->powered = 1;
|
||||
version = (struct mei_nfc_if_version *)reply->data;
|
||||
|
||||
return 0;
|
||||
phy->fw_ivn = version->fw_ivn;
|
||||
phy->vendor_id = version->vendor_id;
|
||||
phy->radio_type = version->radio_type;
|
||||
|
||||
err:
|
||||
kfree(reply);
|
||||
return r;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(nfc_mei_phy_enable);
|
||||
|
||||
void nfc_mei_phy_disable(void *phy_id)
|
||||
static int mei_nfc_connect(struct nfc_mei_phy *phy)
|
||||
{
|
||||
struct nfc_mei_phy *phy = phy_id;
|
||||
struct mei_nfc_cmd *cmd, *reply;
|
||||
struct mei_nfc_connect *connect;
|
||||
struct mei_nfc_connect_resp *connect_resp;
|
||||
size_t connect_length, connect_resp_length;
|
||||
int bytes_recv, r;
|
||||
|
||||
pr_info("%s\n", __func__);
|
||||
|
||||
mei_cl_disable_device(phy->device);
|
||||
connect_length = sizeof(struct mei_nfc_cmd) +
|
||||
sizeof(struct mei_nfc_connect);
|
||||
|
||||
phy->powered = 0;
|
||||
connect_resp_length = sizeof(struct mei_nfc_cmd) +
|
||||
sizeof(struct mei_nfc_connect_resp);
|
||||
|
||||
cmd = kzalloc(connect_length, GFP_KERNEL);
|
||||
if (!cmd)
|
||||
return -ENOMEM;
|
||||
connect = (struct mei_nfc_connect *)cmd->data;
|
||||
|
||||
reply = kzalloc(connect_resp_length, GFP_KERNEL);
|
||||
if (!reply) {
|
||||
kfree(cmd);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
connect_resp = (struct mei_nfc_connect_resp *)reply->data;
|
||||
|
||||
cmd->command = MEI_NFC_CMD_MAINTENANCE;
|
||||
cmd->data_size = 3;
|
||||
cmd->sub_command = MEI_NFC_SUBCMD_CONNECT;
|
||||
connect->fw_ivn = phy->fw_ivn;
|
||||
connect->vendor_id = phy->vendor_id;
|
||||
|
||||
r = mei_cl_send(phy->device, (u8 *)cmd, connect_length);
|
||||
if (r < 0) {
|
||||
pr_err("Could not send connect cmd %d\n", r);
|
||||
goto err;
|
||||
}
|
||||
|
||||
bytes_recv = mei_cl_recv(phy->device, (u8 *)reply, connect_resp_length);
|
||||
if (bytes_recv < 0) {
|
||||
r = bytes_recv;
|
||||
pr_err("Could not read connect response %d\n", r);
|
||||
goto err;
|
||||
}
|
||||
|
||||
pr_info("IVN 0x%x Vendor ID 0x%x\n",
|
||||
connect_resp->fw_ivn, connect_resp->vendor_id);
|
||||
|
||||
pr_info("ME FW %d.%d.%d.%d\n",
|
||||
connect_resp->me_major, connect_resp->me_minor,
|
||||
connect_resp->me_hotfix, connect_resp->me_build);
|
||||
|
||||
r = 0;
|
||||
|
||||
err:
|
||||
kfree(reply);
|
||||
kfree(cmd);
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
static int mei_nfc_send(struct nfc_mei_phy *phy, u8 *buf, size_t length)
|
||||
{
|
||||
struct mei_nfc_hci_hdr *hdr;
|
||||
u8 *mei_buf;
|
||||
int err;
|
||||
|
||||
err = -ENOMEM;
|
||||
mei_buf = kzalloc(length + MEI_NFC_HEADER_SIZE, GFP_KERNEL);
|
||||
if (!mei_buf)
|
||||
goto out;
|
||||
|
||||
hdr = (struct mei_nfc_hci_hdr *) mei_buf;
|
||||
hdr->cmd = MEI_NFC_CMD_HCI_SEND;
|
||||
hdr->status = 0;
|
||||
hdr->req_id = phy->req_id;
|
||||
hdr->reserved = 0;
|
||||
hdr->data_size = length;
|
||||
|
||||
memcpy(mei_buf + MEI_NFC_HEADER_SIZE, buf, length);
|
||||
err = mei_cl_send(phy->device, mei_buf, length + MEI_NFC_HEADER_SIZE);
|
||||
if (err < 0)
|
||||
goto out;
|
||||
|
||||
if (!wait_event_interruptible_timeout(phy->send_wq,
|
||||
phy->recv_req_id == phy->req_id, HZ)) {
|
||||
pr_err("NFC MEI command timeout\n");
|
||||
err = -ETIME;
|
||||
} else {
|
||||
phy->req_id++;
|
||||
}
|
||||
out:
|
||||
kfree(mei_buf);
|
||||
return err;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(nfc_mei_phy_disable);
|
||||
|
||||
/*
|
||||
* Writing a frame must not return the number of written bytes.
|
||||
|
|
@ -103,14 +263,37 @@ static int nfc_mei_phy_write(void *phy_id, struct sk_buff *skb)
|
|||
|
||||
MEI_DUMP_SKB_OUT("mei frame sent", skb);
|
||||
|
||||
r = mei_cl_send(phy->device, skb->data, skb->len);
|
||||
r = mei_nfc_send(phy, skb->data, skb->len);
|
||||
if (r > 0)
|
||||
r = 0;
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
void nfc_mei_event_cb(struct mei_cl_device *device, u32 events, void *context)
|
||||
static int mei_nfc_recv(struct nfc_mei_phy *phy, u8 *buf, size_t length)
|
||||
{
|
||||
struct mei_nfc_hci_hdr *hci_hdr;
|
||||
int received_length;
|
||||
|
||||
received_length = mei_cl_recv(phy->device, buf, length);
|
||||
if (received_length < 0)
|
||||
return received_length;
|
||||
|
||||
hci_hdr = (struct mei_nfc_hci_hdr *) buf;
|
||||
|
||||
if (hci_hdr->cmd == MEI_NFC_CMD_HCI_SEND) {
|
||||
phy->recv_req_id = hci_hdr->req_id;
|
||||
wake_up(&phy->send_wq);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
return received_length;
|
||||
}
|
||||
|
||||
|
||||
static void nfc_mei_event_cb(struct mei_cl_device *device, u32 events,
|
||||
void *context)
|
||||
{
|
||||
struct nfc_mei_phy *phy = context;
|
||||
|
||||
|
|
@ -125,7 +308,7 @@ void nfc_mei_event_cb(struct mei_cl_device *device, u32 events, void *context)
|
|||
if (!skb)
|
||||
return;
|
||||
|
||||
reply_size = mei_cl_recv(device, skb->data, MEI_NFC_MAX_READ);
|
||||
reply_size = mei_nfc_recv(phy, skb->data, MEI_NFC_MAX_READ);
|
||||
if (reply_size < MEI_NFC_HEADER_SIZE) {
|
||||
kfree_skb(skb);
|
||||
return;
|
||||
|
|
@ -139,7 +322,61 @@ void nfc_mei_event_cb(struct mei_cl_device *device, u32 events, void *context)
|
|||
nfc_hci_recv_frame(phy->hdev, skb);
|
||||
}
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(nfc_mei_event_cb);
|
||||
|
||||
static int nfc_mei_phy_enable(void *phy_id)
|
||||
{
|
||||
int r;
|
||||
struct nfc_mei_phy *phy = phy_id;
|
||||
|
||||
pr_info("%s\n", __func__);
|
||||
|
||||
if (phy->powered == 1)
|
||||
return 0;
|
||||
|
||||
r = mei_cl_enable_device(phy->device);
|
||||
if (r < 0) {
|
||||
pr_err("Could not enable device %d\n", r);
|
||||
return r;
|
||||
}
|
||||
|
||||
r = mei_nfc_if_version(phy);
|
||||
if (r < 0) {
|
||||
pr_err("Could not enable device %d\n", r);
|
||||
goto err;
|
||||
}
|
||||
|
||||
r = mei_nfc_connect(phy);
|
||||
if (r < 0) {
|
||||
pr_err("Could not connect to device %d\n", r);
|
||||
goto err;
|
||||
}
|
||||
|
||||
r = mei_cl_register_event_cb(phy->device, nfc_mei_event_cb, phy);
|
||||
if (r) {
|
||||
pr_err("Event cb registration failed %d\n", r);
|
||||
goto err;
|
||||
}
|
||||
|
||||
phy->powered = 1;
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
phy->powered = 0;
|
||||
mei_cl_disable_device(phy->device);
|
||||
return r;
|
||||
}
|
||||
|
||||
static void nfc_mei_phy_disable(void *phy_id)
|
||||
{
|
||||
struct nfc_mei_phy *phy = phy_id;
|
||||
|
||||
pr_info("%s\n", __func__);
|
||||
|
||||
mei_cl_disable_device(phy->device);
|
||||
|
||||
phy->powered = 0;
|
||||
}
|
||||
|
||||
struct nfc_phy_ops mei_phy_ops = {
|
||||
.write = nfc_mei_phy_write,
|
||||
|
|
@ -157,6 +394,7 @@ struct nfc_mei_phy *nfc_mei_phy_alloc(struct mei_cl_device *device)
|
|||
return NULL;
|
||||
|
||||
phy->device = device;
|
||||
init_waitqueue_head(&phy->send_wq);
|
||||
mei_cl_set_drvdata(device, phy);
|
||||
|
||||
return phy;
|
||||
|
|
@ -165,6 +403,7 @@ EXPORT_SYMBOL_GPL(nfc_mei_phy_alloc);
|
|||
|
||||
void nfc_mei_phy_free(struct nfc_mei_phy *phy)
|
||||
{
|
||||
mei_cl_disable_device(phy->device);
|
||||
kfree(phy);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(nfc_mei_phy_free);
|
||||
|
|
|
|||
|
|
@ -10,23 +10,42 @@
|
|||
#define MEI_NFC_HEADER_SIZE 10
|
||||
#define MEI_NFC_MAX_HCI_PAYLOAD 300
|
||||
|
||||
/**
|
||||
* struct nfc_mei_phy
|
||||
*
|
||||
* @device: mei device
|
||||
* @hdev: nfc hci device
|
||||
|
||||
* @send_wq: send completion wait queue
|
||||
* @fw_ivn: NFC Interface Version Number
|
||||
* @vendor_id: NFC manufacturer ID
|
||||
* @radio_type: NFC radio type
|
||||
* @reserved: reserved for alignment
|
||||
* @req_id: message counter
|
||||
* @recv_req_id: reception message counter
|
||||
* @powered: the device is in powered state
|
||||
* @hard_fault: < 0 if hardware error occurred
|
||||
* and prevents normal operation.
|
||||
*/
|
||||
struct nfc_mei_phy {
|
||||
struct mei_cl_device *device;
|
||||
struct nfc_hci_dev *hdev;
|
||||
|
||||
int powered;
|
||||
wait_queue_head_t send_wq;
|
||||
u8 fw_ivn;
|
||||
u8 vendor_id;
|
||||
u8 radio_type;
|
||||
u8 reserved;
|
||||
|
||||
int hard_fault; /*
|
||||
* < 0 if hardware error occured
|
||||
* and prevents normal operation.
|
||||
*/
|
||||
u16 req_id;
|
||||
u16 recv_req_id;
|
||||
|
||||
int powered;
|
||||
int hard_fault;
|
||||
};
|
||||
|
||||
extern struct nfc_phy_ops mei_phy_ops;
|
||||
|
||||
int nfc_mei_phy_enable(void *phy_id);
|
||||
void nfc_mei_phy_disable(void *phy_id);
|
||||
void nfc_mei_event_cb(struct mei_cl_device *device, u32 events, void *context);
|
||||
struct nfc_mei_phy *nfc_mei_phy_alloc(struct mei_cl_device *device);
|
||||
void nfc_mei_phy_free(struct nfc_mei_phy *phy);
|
||||
|
||||
|
|
|
|||
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