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path: root/drivers/bluetooth/btusb.c
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2009-08-24Bluetooth: Add USB autosuspend support to btusb driverOliver Neukum
This patch adds support of USB autosuspend to the btusb driver. If the device doesn't support remote wakeup, simple support based on up/down is provided. If the device supports remote wakeup, additional support for autosuspend while the interface is up is provided. This is done by queueing URBs in an anchor structure and waking the device up from a work queue on sending. Reception triggers remote wakeup. The last busy facility of the USB autosuspend code is used. To close a race between autosuspend and transmission, a counter of ongoing transmissions is maintained. Add #ifdefs for CONFIG_PM as necessary. Signed-off-by: Oliver Neukum <oliver@neukum.org> Tested-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-08-22Bluetooth: Improve USB driver throughput by increasing the frame sizeVikram Kandukuri
This patch increases the receive buffer size to HCI_MAX_FRAME_SIZE which improves the RX throughput considerably. Tested against BRM/Atheros/CSR USB Dongles with PAN profile using iperf and chariot. This gave significant (around 40%) increase in performance (increased from 0.8 to 1.5 Mb/s in Sheld room) Signed-off-by: Vikram Kandukuri <vikram.kandukuri@atheros.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-02-27Bluetooth: Submit bulk URBs along with interrupt URBsMarcel Holtmann
Submitting the bulk URBs for ACL data transfers only on demand has no real benefit compared to just submit them when a Bluetooth device gets opened. So when submitting the interrupt URBs for HCI events, just submit the bulk URBs, too. This solves a problem with some Bluetooth USB dongles that has been reported over the last few month. These devices require that the bulk URBs are actually present. These devices are really broken, but there is nothing we can do about it. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2008-11-30Bluetooth: Enable per-module dynamic debug messagesMarcel Holtmann
With the introduction of CONFIG_DYNAMIC_PRINTK_DEBUG it is possible to allow debugging without having to recompile the kernel. This patch turns all BT_DBG() calls into pr_debug() to support dynamic debug messages. As a side effect all CONFIG_BT_*_DEBUG statements are now removed and some broken debug entries have been fixed. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2008-11-30Bluetooth: Allow SCO audio with Asus WL-BTD202 dongleMarcel Holtmann
This patch allows the Asus WL-BTD202 dongle to be used with a mono headset without having to specify "options btusb force_scofix=1". Based on a patch from Guillaume Bedot <littletux@zarb.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2008-11-30Bluetooth: Send HCI Reset command by default on device initializationMarcel Holtmann
The Bluetooth subsystem was not using the HCI Reset command when doing device initialization. The Bluetooth 1.0b specification was ambiguous on how the device firmware was suppose to handle it. Almost every device was triggering a transport reset at the same time. In case of USB this ended up in disconnects from the bus. All modern Bluetooth dongles handle this perfectly fine and a lot of them actually require that HCI Reset is sent. If not then they are either stuck in their HID Proxy mode or their internal structures for inquiry and paging are not correctly setup. To handle old and new devices smoothly the Bluetooth subsystem contains a quirk to force the HCI Reset on initialization. However maintaining such a quirk becomes more and more complicated. This patch turns the logic around and lets the old devices disable the HCI Reset command. The only device where the HCI_QUIRK_NO_RESET is still needed are the original Digianswer devices and dongles with an early CSR firmware. CSR reported that they fixed this for version 12 firmware. The last official release of version 11 firmware is build ID 115. The first version 12 candidate was build ID 117. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2008-11-30Bluetooth: Add suspend/resume support to btusb driverMarcel Holtmann
During suspend it is important that all URBs are cancelled and then on resume re-submitted. This gives initial suspend/resume support. Based on initial work from Oliver Neukum <oneukum@suse.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2008-11-30Bluetooth: Handle bulk URBs in btusb driver from notify callbackMarcel Holtmann
With the addition of usb_unlink_anchored_urbs() it is possible to fully control the bulk URBs from the notify callback. There is no need to schedule work and so only do this for the ISOC URBs. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2008-11-30Bluetooth: Add fine grained mem_flags usage to btusb driverMarcel Holtmann
The URB submission routines need more fine grained control for the mem_flags used by kmalloc(), usb_alloc_urb() and usb_submit_urb() to better support different caller situations. Add a mem_flags parameter and give the caller full control. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2008-10-06[Bluetooth] Add reset quirk for A-Link BlueUSB21 dongleMarcel Holtmann
The new A-Link Bluetooth dongle is another one based on the BCM2046 chip from Broadcom and it also needs to send HCI_Reset before it becomes fully operational. Without the quirk it will show a lot of I/O errors. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2008-10-06[Bluetooth] Add reset quirk for new Targus and Belkin donglesMarcel Holtmann
Targus and Belkin have come out with new Bluetooth 2.1 capable dongles using the latest BCM2046 chip from Broadcom. Both of them are so called HID proxy dongles and they need to send HCI_Reset before they become fully operational. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2008-10-06[Bluetooth] Fix double frees on error paths of btusb and bpa10x driversMarcel Holtmann
The transfer buffer of an URB will be automatically freed when using the URB_FREE_BUFFER transfer_flag. So the extra calls to kfree() will cause a double free. Reported-by: Justin Mattock <justinmattock@gmail.com> Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2008-09-23[Bluetooth] Fix USB disconnect handling of btusb driverMarcel Holtmann
The USB transport specification for Bluetooth splits the ACL and SCO handling into two separate interfaces. In Linux it possible to probe and disconnect these interfaces independently. So make sure that both interfaces are tightly bound together. This fixes the suspend regression that some people have expierenced. Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2008-09-23[Bluetooth] Fix wrong URB handling of btusb driverMarcel Holtmann
The btusb driver contains two typos that result in some buggy behavior, but the impact is not immediately visible. During initialization the submitting of interrupt URBs might fail and then make sure to remove the correct flag and not one of the hci_dev flags. When closing down the interface make sure to kill the anchor for the ISOC URBs and not kill the interrupt URBs twice. Also cancel any scheduled work when closing down the interface. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2008-09-23[Bluetooth] Fix I/O errors on MacBooks with Broadcom chipsMarcel Holtmann
The newer MacBooks contain a Broadcom based Bluetooth chip and to make this work properly, HCI_Reset must be send first. If HCI_Reset is not used then a lot of I/O errors show up and its triggers packets from non-existent ACL links. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2008-08-18[Bluetooth] Add SCO support to btusb driverMarcel Holtmann
The new generic driver for Bluetooth USB devices was missing proper SCO support. The driver now claims the second interface for these USB devices to allow the flow of SCO packets. It also handles switching of the alternate setting and re-submission of isochronous URBs. The btusb driver is now a full replacement for hci_usb and thus the experimental tag has been removed and this driver is promoted as preferred one. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2008-08-07[Bluetooth] Add full quirk implementation for btusb driverMarcel Holtmann
This implements all the quirk handling from the hci_usb driver to the new btusb driver. Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-10-22[Bluetooth] Add generic driver for Bluetooth USB devicesMarcel Holtmann
This patch adds a new generic driver for Bluetooth USB devices. This driver is still experimental at this point, but it is cleaner and easier to maintain than the current Bluetooth USB driver. It is a much better starting point for power management improvements. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>