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path: root/drivers/bluetooth/bcm203x.c
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Diffstat (limited to 'drivers/bluetooth/bcm203x.c')
-rw-r--r--drivers/bluetooth/bcm203x.c314
1 files changed, 314 insertions, 0 deletions
diff --git a/drivers/bluetooth/bcm203x.c b/drivers/bluetooth/bcm203x.c
new file mode 100644
index 000000000000..5fd3e4cb7525
--- /dev/null
+++ b/drivers/bluetooth/bcm203x.c
@@ -0,0 +1,314 @@
+/*
+ *
+ * Broadcom Blutonium firmware driver
+ *
+ * Copyright (C) 2003 Maxim Krasnyansky <maxk@qualcomm.com>
+ * Copyright (C) 2003 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * 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/config.h>
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/timer.h>
+
+#include <linux/device.h>
+#include <linux/firmware.h>
+
+#include <linux/usb.h>
+
+#include <net/bluetooth/bluetooth.h>
+
+#ifndef CONFIG_BT_HCIBCM203X_DEBUG
+#undef BT_DBG
+#define BT_DBG(D...)
+#endif
+
+#define VERSION "1.0"
+
+static int ignore = 0;
+
+static struct usb_device_id bcm203x_table[] = {
+ /* Broadcom Blutonium (BCM2033) */
+ { USB_DEVICE(0x0a5c, 0x2033) },
+
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, bcm203x_table);
+
+#define BCM203X_ERROR 0
+#define BCM203X_RESET 1
+#define BCM203X_LOAD_MINIDRV 2
+#define BCM203X_SELECT_MEMORY 3
+#define BCM203X_CHECK_MEMORY 4
+#define BCM203X_LOAD_FIRMWARE 5
+#define BCM203X_CHECK_FIRMWARE 6
+
+#define BCM203X_IN_EP 0x81
+#define BCM203X_OUT_EP 0x02
+
+struct bcm203x_data {
+ struct usb_device *udev;
+
+ unsigned long state;
+
+ struct timer_list timer;
+
+ struct urb *urb;
+ unsigned char *buffer;
+
+ unsigned char *fw_data;
+ unsigned int fw_size;
+ unsigned int fw_sent;
+};
+
+static void bcm203x_complete(struct urb *urb, struct pt_regs *regs)
+{
+ struct bcm203x_data *data = urb->context;
+ struct usb_device *udev = urb->dev;
+ int len;
+
+ BT_DBG("udev %p urb %p", udev, urb);
+
+ if (urb->status) {
+ BT_ERR("URB failed with status %d", urb->status);
+ data->state = BCM203X_ERROR;
+ return;
+ }
+
+ switch (data->state) {
+ case BCM203X_LOAD_MINIDRV:
+ memcpy(data->buffer, "#", 1);
+
+ usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
+ data->buffer, 1, bcm203x_complete, data);
+
+ data->state = BCM203X_SELECT_MEMORY;
+
+ mod_timer(&data->timer, jiffies + (HZ / 10));
+ break;
+
+ case BCM203X_SELECT_MEMORY:
+ usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
+ data->buffer, 32, bcm203x_complete, data, 1);
+
+ data->state = BCM203X_CHECK_MEMORY;
+
+ if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
+ BT_ERR("Can't submit URB");
+ break;
+
+ case BCM203X_CHECK_MEMORY:
+ if (data->buffer[0] != '#') {
+ BT_ERR("Memory select failed");
+ data->state = BCM203X_ERROR;
+ break;
+ }
+
+ data->state = BCM203X_LOAD_FIRMWARE;
+
+ case BCM203X_LOAD_FIRMWARE:
+ if (data->fw_sent == data->fw_size) {
+ usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
+ data->buffer, 32, bcm203x_complete, data, 1);
+
+ data->state = BCM203X_CHECK_FIRMWARE;
+ } else {
+ len = min_t(uint, data->fw_size - data->fw_sent, 4096);
+
+ usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
+ data->fw_data + data->fw_sent, len, bcm203x_complete, data);
+
+ data->fw_sent += len;
+ }
+
+ if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
+ BT_ERR("Can't submit URB");
+ break;
+
+ case BCM203X_CHECK_FIRMWARE:
+ if (data->buffer[0] != '.') {
+ BT_ERR("Firmware loading failed");
+ data->state = BCM203X_ERROR;
+ break;
+ }
+
+ data->state = BCM203X_RESET;
+ break;
+ }
+}
+
+static void bcm203x_timer(unsigned long user_data)
+{
+ struct bcm203x_data *data = (struct bcm203x_data *) user_data;
+
+ if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
+ BT_ERR("Can't submit URB");
+}
+
+static int bcm203x_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+ const struct firmware *firmware;
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct bcm203x_data *data;
+ int size;
+
+ BT_DBG("intf %p id %p", intf, id);
+
+ if (ignore || (intf->cur_altsetting->desc.bInterfaceNumber != 0))
+ return -ENODEV;
+
+ data = kmalloc(sizeof(*data), GFP_KERNEL);
+ if (!data) {
+ BT_ERR("Can't allocate memory for data structure");
+ return -ENOMEM;
+ }
+
+ memset(data, 0, sizeof(*data));
+
+ data->udev = udev;
+ data->state = BCM203X_LOAD_MINIDRV;
+
+ data->urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!data->urb) {
+ BT_ERR("Can't allocate URB");
+ kfree(data);
+ return -ENOMEM;
+ }
+
+ if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) {
+ BT_ERR("Mini driver request failed");
+ usb_free_urb(data->urb);
+ kfree(data);
+ return -EIO;
+ }
+
+ BT_DBG("minidrv data %p size %d", firmware->data, firmware->size);
+
+ size = max_t(uint, firmware->size, 4096);
+
+ data->buffer = kmalloc(size, GFP_KERNEL);
+ if (!data->buffer) {
+ BT_ERR("Can't allocate memory for mini driver");
+ release_firmware(firmware);
+ usb_free_urb(data->urb);
+ kfree(data);
+ return -ENOMEM;
+ }
+
+ memcpy(data->buffer, firmware->data, firmware->size);
+
+ usb_fill_bulk_urb(data->urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
+ data->buffer, firmware->size, bcm203x_complete, data);
+
+ release_firmware(firmware);
+
+ if (request_firmware(&firmware, "BCM2033-FW.bin", &udev->dev) < 0) {
+ BT_ERR("Firmware request failed");
+ usb_free_urb(data->urb);
+ kfree(data->buffer);
+ kfree(data);
+ return -EIO;
+ }
+
+ BT_DBG("firmware data %p size %d", firmware->data, firmware->size);
+
+ data->fw_data = kmalloc(firmware->size, GFP_KERNEL);
+ if (!data->fw_data) {
+ BT_ERR("Can't allocate memory for firmware image");
+ usb_free_urb(data->urb);
+ kfree(data->buffer);
+ kfree(data);
+ return -ENOMEM;
+ }
+
+ memcpy(data->fw_data, firmware->data, firmware->size);
+ data->fw_size = firmware->size;
+ data->fw_sent = 0;
+
+ release_firmware(firmware);
+
+ init_timer(&data->timer);
+ data->timer.function = bcm203x_timer;
+ data->timer.data = (unsigned long) data;
+
+ usb_set_intfdata(intf, data);
+
+ mod_timer(&data->timer, jiffies + HZ);
+
+ return 0;
+}
+
+static void bcm203x_disconnect(struct usb_interface *intf)
+{
+ struct bcm203x_data *data = usb_get_intfdata(intf);
+
+ BT_DBG("intf %p", intf);
+
+ usb_kill_urb(data->urb);
+
+ usb_set_intfdata(intf, NULL);
+
+ usb_free_urb(data->urb);
+ kfree(data->fw_data);
+ kfree(data->buffer);
+ kfree(data);
+}
+
+static struct usb_driver bcm203x_driver = {
+ .owner = THIS_MODULE,
+ .name = "bcm203x",
+ .probe = bcm203x_probe,
+ .disconnect = bcm203x_disconnect,
+ .id_table = bcm203x_table,
+};
+
+static int __init bcm203x_init(void)
+{
+ int err;
+
+ BT_INFO("Broadcom Blutonium firmware driver ver %s", VERSION);
+
+ err = usb_register(&bcm203x_driver);
+ if (err < 0)
+ BT_ERR("Failed to register USB driver");
+
+ return err;
+}
+
+static void __exit bcm203x_exit(void)
+{
+ usb_deregister(&bcm203x_driver);
+}
+
+module_init(bcm203x_init);
+module_exit(bcm203x_exit);
+
+module_param(ignore, bool, 0644);
+MODULE_PARM_DESC(ignore, "Ignore devices from the matching table");
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Broadcom Blutonium firmware driver ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-05 19:30:57 +0000