From: Tedd Ho-Jeong An <[email protected]>
This patch adds sample BT USB mini-driver
Signed-off-by: Tedd Ho-Jeong An <[email protected]>
---
drivers/bluetooth/btusb.c | 3 +
drivers/bluetooth/btusb_sample.c | 189 ++++++++++++++++++++++++++++++++++++++
2 files changed, 192 insertions(+)
create mode 100644 drivers/bluetooth/btusb_sample.c
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 39a1e6c..630d938 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -193,6 +193,9 @@ static struct usb_device_id blacklist_table[] = {
/* Frontline ComProbe Bluetooth Sniffer */
{ USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
+ /* BT USB sample mini-driver */
+ { USB_DEVICE(0x1234, 0x5678), .driver_info = BTUSB_IGNORE },
+
{ } /* Terminating entry */
};
diff --git a/drivers/bluetooth/btusb_sample.c b/drivers/bluetooth/btusb_sample.c
new file mode 100644
index 0000000..6f4a9e0
--- /dev/null
+++ b/drivers/bluetooth/btusb_sample.c
@@ -0,0 +1,189 @@
+/*
+ *
+ * Bluetooth USB Mini Driver - Sample
+ *
+ * Copyright (C) 2012 Intel Corporation
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+#include <linux/module.h>
+#include <linux/usb.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btusb.h"
+
+/*
+ * This is sample BT USB mini-driver to demonstrate how a vendor can execute
+ * the vendor specific device initialization routine and handle vendor specific
+ * events.
+ *
+ * In this sample, it will send one vendor HCI command (but not limited to 1)
+ * as an example.
+ */
+
+#define VENDOR_HCI_SAMPLE_CMD_1 0xfc01
+
+/* mini-driver context */
+struct btusb_sample_data {
+ struct hci_dev *hdev;
+
+ /* for synchronization */
+ struct completion wait_evt_complete;
+};
+
+/*
+ * Entry point for device setup.
+ */
+int btusb_sample_setup(struct hci_dev *hdev)
+{
+ int ret;
+ struct btusb_sample_data *data;
+
+ /* initialize the sample data */
+ data = kmalloc(sizeof(*data), GFP_KERNEL);
+ if (!data) {
+ BT_ERR("failed to allocate the memory for data");
+ return -ENOMEM;
+ }
+
+ hdev->vendor_data = data;
+ data->hdev = hdev;
+
+ init_completion(&data->wait_evt_complete);
+
+ /* send command */
+ ret = hci_send_cmd(hdev, VENDOR_HCI_SAMPLE_CMD_1, 0, NULL);
+ if (ret < 0) {
+ BT_ERR("failed to send command: %d", ret);
+ kfree(data);
+ return ret;
+ }
+
+ /* waiting for event */
+ ret = wait_for_completion_interruptible(&data->wait_evt_complete);
+ if (ret < 0) {
+ BT_ERR("wait completion error: %d", ret);
+ kfree(data);
+ return ret;
+ }
+
+
+ /* done */
+ kfree(data);
+
+ return 0;
+}
+
+/*
+ * Vendor specific event handler
+ *
+ * During the vendor setup mode, this function is responsible for handling all
+ * received HCI events.
+ */
+void btusb_sample_event(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct btusb_sample_data *data;
+ struct hci_event_hdr *hdr;
+ struct hci_ev_cmd_complete *cc;
+ u16 opcode;
+
+ data = hdev->vendor_data;
+
+ /* event header */
+ hdr = (void *)skb->data;
+ if (hdr->evt != HCI_EV_CMD_COMPLETE) {
+ BT_ERR("invalid event code: %02x", hdr->evt);
+ goto exit_error;
+ }
+ skb_pull(skb, sizeof(*hdr));
+
+ /* command complete event */
+ cc = (void *)skb->data;
+ opcode =le16_to_cpu(cc->opcode);
+ if (opcode != VENDOR_HCI_SAMPLE_CMD_1) {
+ BT_ERR("invalid opcode: %04x", opcode);
+ goto exit_error;
+ }
+ skb_pull(skb, sizeof(*cc));
+
+ /* check status */
+ if ((u8)skb->data[0]) {
+ BT_ERR("evt status failed: %02x", (u8)skb->data[0]);
+ goto exit_error;
+ }
+
+exit_error:
+ /* this is for handling the flow control */
+ del_timer(&hdev->cmd_timer);
+ atomic_set(&hdev->cmd_cnt, 1);
+
+ /* consume the event here */
+ kfree_skb(skb);
+
+ /* complete the wait */
+ complete(&data->wait_evt_complete);
+}
+
+/*
+ * Bind this mini-driver to btusb.ko
+ */
+int btusb_sample_bind(struct hci_dev *hdev)
+{
+ /* set the vendor_setup and vendor_event handlers */
+ hdev->vendor_setup = btusb_sample_setup;
+ hdev->vendor_event = btusb_sample_event;
+
+ return 0;
+}
+
+/*
+ * Unbind this mini-driver to btusb.ko
+ */
+void btusb_sample_unbind(struct hci_dev *hdev)
+{
+
+ return;
+}
+
+static const struct btusb_driver_info sample_info = {
+ .description = "BT USB mini driver sample",
+ .bind = btusb_sample_bind,
+ .unbind = btusb_sample_unbind,
+};
+
+static const struct usb_device_id products[] = {
+ {
+ USB_DEVICE(0x1234, 0x5678),
+ .driver_info = (unsigned long) &sample_info,
+ },
+ {}, /* END */
+};
+MODULE_DEVICE_TABLE(usb, products);
+
+static struct usb_driver btusb_sample_minidriver = {
+ .name = "btusb sample mini-driver",
+ .probe = btusb_probe_one,
+ .disconnect = btusb_disconnect,
+ .id_table = products,
+};
+module_usb_driver(btusb_sample_minidriver);
+
+MODULE_AUTHOR("Tedd Ho-Jeong An <[email protected]>");
+MODULE_DESCRIPTION("BT USB sample mini driver");
+MODULE_LICENSE("GPL");
--
1.7.9.5
Hi Tedd,
> This patch adds sample BT USB mini-driver
>
> Signed-off-by: Tedd Ho-Jeong An <[email protected]>
> ---
> drivers/bluetooth/btusb.c | 3 +
> drivers/bluetooth/btusb_sample.c | 189 ++++++++++++++++++++++++++++++++++++++
> 2 files changed, 192 insertions(+)
> create mode 100644 drivers/bluetooth/btusb_sample.c
>
> diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
> index 39a1e6c..630d938 100644
> --- a/drivers/bluetooth/btusb.c
> +++ b/drivers/bluetooth/btusb.c
> @@ -193,6 +193,9 @@ static struct usb_device_id blacklist_table[] = {
> /* Frontline ComProbe Bluetooth Sniffer */
> { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
>
> + /* BT USB sample mini-driver */
> + { USB_DEVICE(0x1234, 0x5678), .driver_info = BTUSB_IGNORE },
> +
> { } /* Terminating entry */
> };
we should convert BCM92035 into a mini-driver for demo purposes. It is
the perfect candidate and as a nice extra result, I can remove the
stupid hdev->driver_init queue.
Regards
Marcel