Bluetooth: hci_ll: drop of_match_ptr for ID table

The driver can match only via the DT table so the table should be always
used and the of_match_ptr does not have any sense (this also allows ACPI
matching via PRP0001, even though it might not be relevant here).

drivers/bluetooth/hci_ll.c:769:34: error: ‘hci_ti_of_match’ defined
but not used [-Werror=unused-const-variable=]

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

Bluetooth: hci_ll: don't call kfree_skb() under spin_lock_irqsave()

It is not allowed to call kfree_skb() from hardware interrupt
context or with interrupts being disabled. So replace kfree_skb()
with dev_kfree_skb_irq() under spin_lock_irqsave().

Fixes: 166d2f6a4332 ("[Bluetooth] Add UART driver for Texas Instruments' BRF63xx chips")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

Bluetooth: Remove kernel-doc style comment block

This patch changes the kernel-doc style comment block to common comment
block. These files don't support kernel-doc style so no need to use the
kernel-doc style. Also, they cause the warning when W=1 option is used
as below.

drivers/bluetooth/hci_ll.c:518: warning: Function parameter or member 'lldev' not described in 'download_firmware'
drivers/bluetooth/btmrvl_debugfs.c:29: warning: cannot understand function prototype: 'struct btmrvl_debugfs_data '
drivers/bluetooth/btmrvl_sdio.c:36: warning: expecting prototype for Marvell BT-over-SDIO driver(). Prototype was for VERSION() instead

Signed-off-by: Tedd Ho-Jeong An <tedd.an@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: hci_ll: add a small delay for wl1271 enable bt_en

When using the wl1271 Bluetooth function of am335x, it is found that the
Bluetooth module cannot respond in time after Bluetooth is enabled, and
a small delay is needed to work normally, so whether to add a small
mdelay.

Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: Use fallthrough pseudo-keyword

Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Revert "Bluetooth: hci_ll: set operational frequency earlier"

As nice as it would be to update firmware faster, that patch broke
at least two different boards, an OMAP4+WL1285 based Motorola Droid
4, as reported by Sebasian Reichel and the Logic PD i.MX6Q +
WL1837MOD.

This reverts commit a2e02f38eff84f199c8e32359eb213f81f270047.

Signed-off-by: Adam Ford <aford173@gmail.com>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Cc: stable@vger.kernel.org
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: Cleanup formatting and coding style

Fix some warnings and one error reported by checkpatch.pl:
- lines longer than 80 characters are wrapped
- empty lines inserted to separate variable declarations from the actual
code
- line break inserted after if (...)

Co-developed-by: Thomas Röthenbacher <thomas.roethenbacher@fau.de>
Signed-off-by: Thomas Röthenbacher <thomas.roethenbacher@fau.de>
Signed-off-by: Fabian Schindlatz <fabian.schindlatz@fau.de>
Cc: linux-kernel@i4.cs.fau.de
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: hci_ll: Refactor download_firmware

Extract the new function send_command_from_firmware from
download_firmware, which helps with the readability of the switch
statement. This way the code is less deeply nested and also no longer
exceeds the 80 character limit.

Co-developed-by: Thomas Röthenbacher <thomas.roethenbacher@fau.de>
Signed-off-by: Thomas Röthenbacher <thomas.roethenbacher@fau.de>
Signed-off-by: Fabian Schindlatz <fabian.schindlatz@fau.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: hci_ll: set operational frequency earlier

Uploading the firmware needs quite a few seconds if done at 115200 kbps. So set
the operational frequency, usually 3 MHz, before uploading the firmware.

I have successfully tested this with a wl1837mod.

Signed-off-by: Philipp Puschmann <philipp.puschmann@emlix.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333

Based on 1 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation 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

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 136 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000436.384967451@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Bluetooth: hci_serdev: Move serdev_device_close/open into common hci_serdev code

Make hci_uart_register_device() and hci_uart_unregister_device() call
serdev_device_close()/open() themselves instead of relying on the various
hci_uart drivers to do this for them.

Besides reducing code complexity, this also ensures correct error checking
of serdev_device_open(), which was missing in a few drivers.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: hci_ll: Convert to use h4_recv_buf helper

The HCILL or eHCILL protocol from TI is actually an H:4 protocol with a
few extra events and thus can also use the h4_recv_buf helper. Instead
of open coding the same funtionality add the extra events to the packet
description table and use h4_recv_buf.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

Bluetooth: hci_ll: Use skb_put_u8 instead of struct hcill_cmd

The struct hcill_cmd to create an skb with a single u8 is pointless. So
just use skb_put_u8 instead.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

Bluetooth: hci_ll: Replace mdelay with msleep in download_firmware

download_firmware() is never called from atomic context.

It is only called by ll_setup() that is called only via function pointer
"->setup" used in hci_uart_setup() in drivers/bluetooth/hci_serdev.c and
drivers/bluetooth/hci_ldisc.c. hci_uart_setup() is called only
via function pointer "->setup" used in hci_dev_do_open()
in net/bluetooth/hci_core.c.
All of the above functions do not enter atomic context.

Besides, ll_setup() calls msleep() and hci_dev_do_open calls mutex_lock().
So it indicates that all the above functions call functions that can sleep.

Despite never getting called from atomic context, download_firmware()
calls mdelay() for busy wait.
That is not necessary and can be replaced with msleep to avoid busy wait.

This is found by a static analysis tool named DCNS written by myself.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: hci_ll: add "ti,cc2560" compatible string

This adds the "ti,cc2560" compatible string for a TI CC2560 chip.

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: hci_ll: Add optional nvmem BD address source

This adds an optional nvmem consumer to get a BD address from an external
source. The BD address is then set in the Bluetooth chip after the
firmware has been loaded.

This has been tested working with a TI CC2560A chip (in a LEGO MINDSTORMS
EV3).

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: hci_ll: add support for setting public address

This adds support for setting the public address on Texas Instruments
Bluetooth chips using a vendor-specific command.

This has been tested on a CC2560A chip. The TI wiki also indicates that
this command should work on TI WL17xx/WL18xx Bluetooth chips.

During review, there was some question as to the correctness of the byte
swapping since TI's documentation is not clear on this matter. This can
be tested with the btmgmt utility from bluez. The adapter must be powered
off to change the address. If the baswap() is omitted, address is reversed.

In case there is a issue in the future, here is the output of btmon during
the command `btmgmt public-addr 00:11:22:33:44:55`:

Bluetooth monitor ver 5.43
= Note: Linux version 4.15.0-rc2-08561-gcb132a1-dirty (armv5tejl) 0.707043
= Note: Bluetooth subsystem version 2.22 0.707091
= New Index: 00:17:E7:BD:1C:8E (Primary,UART,hci0) [hci0] 0.707106
@ MGMT Open: btmgmt (privileged) version 1.14 {0x0002} 0.707124
@ MGMT Open: bluetoothd (privileged) version 1.14 {0x0001} 0.707137
@ MGMT Open: btmon (privileged) version 1.14 {0x0003} 0.707540
@ MGMT Command: Set Public Address (0x0039) plen 6 {0x0002} [hci0] 11.167991
Address: 00:11:22:33:44:55 (CIMSYS Inc)
@ MGMT Event: Command Complete (0x0001) plen 7 {0x0002} [hci0] 11.175681
Set Public Address (0x0039) plen 4
Status: Success (0x00)
Missing options: 0x00000000
@ MGMT Event: Index Removed (0x0005) plen 0 {0x0003} [hci0] 11.175757
@ MGMT Event: Index Removed (0x0005) plen 0 {0x0002} [hci0] 11.175757
@ MGMT Event: Index Removed (0x0005) plen 0 {0x0001} [hci0] 11.175757
= Open Index: 00:17:E7:BD:1C:8E [hci0] 11.176807
< HCI Command: Vendor (0x3f|0x0006) plen 6 [hci0] 11.176975
00 11 22 33 44 55 .."3DU
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 11.188260
Vendor (0x3f|0x0006) ncmd 1
Status: Success (0x00)
...
< HCI Command: Read Local Version Info.. (0x04|0x0001) plen 0 [hci0] 11.189859
> HCI Event: Command Complete (0x0e) plen 12 [hci0] 11.190732
Read Local Version Information (0x04|0x0001) ncmd 1
Status: Success (0x00)
HCI version: Bluetooth 2.1 (0x04) - Revision 0 (0x0000)
LMP version: Bluetooth 2.1 (0x04) - Subversion 6431 (0x191f)
Manufacturer: Texas Instruments Inc. (13)
< HCI Command: Read BD ADDR (0x04|0x0009) plen 0 [hci0] 11.191027
> HCI Event: Command Complete (0x0e) plen 10 [hci0] 11.192101
Read BD ADDR (0x04|0x0009) ncmd 1
Status: Success (0x00)
Address: 00:11:22:33:44:55 (CIMSYS Inc)
...

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: hci_ll: Add endianness conversion when setting baudrate

This adds an endianness conversion when setting the baudrate using a
vendor-specific command. Otherwise, bad things might happen on a big-
endian system.

Suggested-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: hci_ll: add constant for vendor-specific command

This adds a #define for the vendor-specific HCI command to set the
baudrate instead of using the bare 0xff36 multiple times.

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: serdev: hci_ll: Wait for CTS instead of using msleep

When a TI Bluetooth chip is reset, it takes about 100ms for the RTS line of
the chip to deassert. For my use case with a TI CC2560A chip, this delay
was not long enough and caused the local UART to never transmit at all (TI
AM1808 SoC UART2).

We can wait for the CTS signal using serdev_device_wait_for_cts() instead
of trying to guess using msleep().

Also changed the comment to be more informative while we are touching this
code.

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: hci_ll: remove \n from kernel messages

The bt_* printk macros include a \n already, so we don't need extra ones
here.

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

In this particular case, notice that I replaced the
"deliberate fall-through..." comment with a "fall through"
comment, which is what GCC is expecting to find.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: Style fix - align block comments

Fixed alignment of all block comments.
Found using checkpatch

Signed-off-by: Derek Robson <robsonde@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: hci_ll: Use new hci_uart_unregister_device() function

Convert hci_ll to use hci_uart_unregister_device().

This simplifies the _remove() handler as well as fixes a
potential race condition on unload.

Signed-off-by: Ian Molton <ian@mnementh.co.uk>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabor.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

networking: make skb_put & friends return void pointers

It seems like a historic accident that these return unsigned char *,
and in many places that means casts are required, more often than not.

Make these functions (skb_put, __skb_put and pskb_put) return void *
and remove all the casts across the tree, adding a (u8 *) cast only
where the unsigned char pointer was used directly, all done with the
following spatch:

@@
expression SKB, LEN;
typedef u8;
identifier fn = { skb_put, __skb_put };
@@
- *(fn(SKB, LEN))
+ *(u8 *)fn(SKB, LEN)

@@
expression E, SKB, LEN;
identifier fn = { skb_put, __skb_put };
type T;
@@
- E = ((T *)(fn(SKB, LEN)))
+ E = fn(SKB, LEN)

which actually doesn't cover pskb_put since there are only three
users overall.

A handful of stragglers were converted manually, notably a macro in
drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many
instances in net/bluetooth/hci_sock.c. In the former file, I also
had to fix one whitespace problem spatch introduced.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

networking: introduce and use skb_put_data()

A common pattern with skb_put() is to just want to memcpy()
some data into the new space, introduce skb_put_data() for
this.

An spatch similar to the one for skb_put_zero() converts many
of the places using it:

@@
identifier p, p2;
expression len, skb, data;
type t, t2;
@@
(
-p = skb_put(skb, len);
+p = skb_put_data(skb, data, len);
|
-p = (t)skb_put(skb, len);
+p = skb_put_data(skb, data, len);
)
(
p2 = (t2)p;
-memcpy(p2, data, len);
|
-memcpy(p, data, len);
)

@@
type t, t2;
identifier p, p2;
expression skb, data;
@@
t *p;
...
(
-p = skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
|
-p = (t *)skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
)
(
p2 = (t2)p;
-memcpy(p2, data, sizeof(*p));
|
-memcpy(p, data, sizeof(*p));
)

@@
expression skb, len, data;
@@
-memcpy(skb_put(skb, len), data, len);
+skb_put_data(skb, data, len);

(again, manually post-processed to retain some comments)

Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Bluetooth: hci_ll: Add support for the external clock

Add support to manage the external clock provided to the WiLink combo chip
as it's needed for any of the transport interfaces.

To avoid breaking platforms not yet specifying the external clock, we make
it optional. In case the clock is successfully fetched during ->probe(),
let's manage it via the ->open|close() callbacks, to make sure the device
get properly powered on/off.

Fixes: ea452678734e ("arm64: dts: hikey: Fix WiFi support")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: hci_ll: Add compatible values for more WL chips

Add compatible values for WiLink chips from 128x and 180x series.
Also the DT binding already contained compatible values for the 127x
series, but the driver did not. This brings the list on par with
the list from wlcore (the wifi driver).

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: hci_ll: Fix download_firmware() return when __hci_cmd_sync fails

When __hci_cmd_sync() fails, download_firmware() should also fail, and
the same error value should be returned as PTR_ERR(skb).

Without this fix, download_firmware() will return a success when it actually
failed in __hci_cmd_sync().

Fixes: 371805522f87 ("bluetooth: hci_uart: add LL protocol serdev driver support")
Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: hci_ll: Fix NULL pointer deref on FW upload failure

Avoid NULL pointer dereference occurring due to freeing
skb containing an error pointer. It can easily be triggered
by using the driver with broken uart (i.e. due to misconfigured
pinmuxing).

Fixes: 371805522f87 ("bluetooth: hci_uart: add LL protocol serdev driver support")
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

bluetooth: hci_uart: add LL protocol serdev driver support

Turns out that the LL protocol and the TI-ST are the same thing AFAICT.
The TI-ST adds firmware loading, GPIO control, and shared access for
NFC, FM radio, etc. For now, we're only implementing what is needed for
BT. This mirrors other drivers like BCM and Intel, but uses the new
serdev bus.

The firmware loading is greatly simplified by using existing
infrastructure to send commands. It may be a bit slower than the
original code using synchronous functions, but the real bottleneck is
likely doing firmware load at 115.2kbps.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Cc: linux-bluetooth@vger.kernel.org
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: Use new hci_skb_pkt_* wrappers for drivers

The new hci_skb_pkt_* wrappers are mainly intented for drivers to
require less knowledge about bt_cb(sbk) handling. So after converting
the core packet handling, convert all drivers.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

Bluetooth: hci_uart: Remove the manual protocol init message

The init function for each HCI UART protocol prints the same on success
and failure. This information is so generic, remove it and let the main
HCI UART handling print it instead.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

Bluetooth: hci_uart: Add name information to hci_uart_proto struct

This adds an extra name field to the hci_uart_proto struct that provides
a simple way of adding a string identifier to the protocol.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

Bluetooth: hci_uart: Make struct hci_uart_proto always const

The usage of struct hci_uart_proto should always be const. Change the
function headers and individual protocol drivers.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

Bluetooth: hci_uart: Use const data pointer for received data

The TTY layer provides its data pointers as const, but the HCI UART
callbacks expect them as general data pointers. This is of course
wrong and instead of casting them, just fix the individual drivers
to actually take a const data pointer.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

Bluetooth: Add hdev parameter to hdev->send driver callback

Instead of masking hdev inside the skb->dev parameter, hand it
directly to the driver as a parameter to hdev->send. This makes
the driver interface more clear and simpler.

This patch fixes all drivers to accept and handle the new parameter
of hdev->send callback. Special care has been taken for bpa10x
and btusb drivers that require having skb->dev set to hdev for
the URB transmit complete handlers.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

Bluetooth: Provide hdev parameter to hci_recv_frame() driver callback

To avoid casting skb->dev into hdev, just let the drivers provide
the hdev directly when calling hci_recv_frame() function.

This patch also fixes up all drivers to provide the hdev.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

Bluetooth: hci_ll.c: removes unnecessary semicolon

removes unnecessary semicolon

Found by Coccinelle: http://coccinelle.lip6.fr/

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

Bluetooth: Remove 'register' usage from the subsystem

Let the compiler chooses what is best.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: hci-uart-ll: Use GFP_ATOMIC in open()

The uart_proto open() callback is not called in atomic context so we can safely
sleep here. The caller hci_uart_set_proto() in hci_ldisc.c is an ioctl() handler
and therefore can sleep.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>

Bluetooth: Add __init and __exit marks to UART drivers

Those marks are useful to save space in the binary and in the memory.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: Use __packed annotation for drivers

Use the __packed annotation instead of the __attribute__((packed)).

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: Use the proper function cast to get hdr data

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: Fix return value when bt_skb_alloc fails

Set the proper error(ENOMEM), instead of just return 0.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: Remove some pointless conditionals before kfree_skb()

Remove some pointless conditionals before kfree_skb().

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Bluetooth: Enable per-module dynamic debug messages

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>

Bluetooth: Respect HCI_UART_DEBUG config in hci_ll.c

Following the pattern from hci_*.c, turn off BT_DBG messages unless
they have been requested via HCI_UART_DEBUG

Signed-off-by: Nick Pelly <npelly@google.com>
Acked-by: Brian Swetland <swetland@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

[BLUETOOTH]: Always send explicit hci_ll wake-up acks.

In the (rare) event of simultaneous mutual wake up requests,
do send the chip an explicit wake-up ack. This is required
for Texas Instruments's BRF6350 chip.

Signed-off-by: Ohad Ben-Cohen <ohad@bencohen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

[Bluetooth] Add UART driver for Texas Instruments' BRF63xx chips

Add support for Texas Instruments' HCI Low Level (HCILL) Bluetooth
protocol, which is a power management extension to H4. The HCILL is
widely used by TI's BRF63xx Bluetooth chips.

Signed-off-by: Ohad Ben-Cohen <ohad@bencohen.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>