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commit 47c5d829a3e326b7395352a10fc8a6effe7afa15 upstream.
Since commit 3e4be65eb82c ("Bluetooth: hci_qca: Add poweroff support
during hci down for wcn3990"), the setup callback which registers the
debugfs interface can be called multiple times.
This specifically leads to the following error when powering on the
controller:
debugfs: Directory 'ibs' with parent 'hci0' already present!
Add a driver flag to avoid trying to register the debugfs interface more
than once.
Fixes: 3e4be65eb82c ("Bluetooth: hci_qca: Add poweroff support during hci down for wcn3990")
Cc: stable@vger.kernel.org # 4.20
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 55c0bd77479b60ea29fd390faf4545cfb3a1d79e upstream.
If BT SoC is running with ROM FW then just return in
qca_suspend function as ROM FW does not support
in-band sleep.
Fixes: 2be43abac5a8 ("Bluetooth: hci_qca: Wait for timeout during suspend")
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 1bb0c66332babc5cbc4581d962da0b03af9f23e8 upstream.
QCA_IBS_DISABLED flag will be set after memorydump started from
controller.Currently qca_suspend() is waiting for SSR to complete
based on flag QCA_IBS_DISABLED.Added to check for QCA_SSR_TRIGGERED
flag too.
Fixes: 2be43abac5a8 ("Bluetooth: hci_qca: Wait for timeout during suspend")
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit ad3a9c0ec2d2baed936cfdd05870f9d1e1f40e0e upstream.
During SSR after memory dump collection,BT controller will be powered off,
powered on and then FW will be downloaded.During suspend if BT controller
is powered off due to SSR then we should wait until SSR is completed and
then suspend.
Fixes: 2be43abac5a8 ("Bluetooth: hci_qca: Wait for timeout during suspend")
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 272970be3dabd24cbe50e393ffee8f04aec3b9a8 ]
The driver shutdown callback (which sends EDL_SOC_RESET to the device
over serdev) should not be invoked when HCI device is not open (e.g. if
hci_dev_open_sync() failed), because the serdev and its TTY are not open
either. Also skip this step if device is powered off
(qca_power_shutdown()).
The shutdown callback causes use-after-free during system reboot with
Qualcomm Atheros Bluetooth:
Unable to handle kernel paging request at virtual address
0072662f67726fd7
...
CPU: 6 PID: 1 Comm: systemd-shutdow Tainted: G W
6.1.0-rt5-00325-g8a5f56bcfcca #8
Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT)
Call trace:
tty_driver_flush_buffer+0x4/0x30
serdev_device_write_flush+0x24/0x34
qca_serdev_shutdown+0x80/0x130 [hci_uart]
device_shutdown+0x15c/0x260
kernel_restart+0x48/0xac
KASAN report:
BUG: KASAN: use-after-free in tty_driver_flush_buffer+0x1c/0x50
Read of size 8 at addr ffff16270c2e0018 by task systemd-shutdow/1
CPU: 7 PID: 1 Comm: systemd-shutdow Not tainted
6.1.0-next-20221220-00014-gb85aaf97fb01-dirty #28
Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT)
Call trace:
dump_backtrace.part.0+0xdc/0xf0
show_stack+0x18/0x30
dump_stack_lvl+0x68/0x84
print_report+0x188/0x488
kasan_report+0xa4/0xf0
__asan_load8+0x80/0xac
tty_driver_flush_buffer+0x1c/0x50
ttyport_write_flush+0x34/0x44
serdev_device_write_flush+0x48/0x60
qca_serdev_shutdown+0x124/0x274
device_shutdown+0x1e8/0x350
kernel_restart+0x48/0xb0
__do_sys_reboot+0x244/0x2d0
__arm64_sys_reboot+0x54/0x70
invoke_syscall+0x60/0x190
el0_svc_common.constprop.0+0x7c/0x160
do_el0_svc+0x44/0xf0
el0_svc+0x2c/0x6c
el0t_64_sync_handler+0xbc/0x140
el0t_64_sync+0x190/0x194
Fixes: 7e7bbddd029b ("Bluetooth: hci_qca: Fix qca6390 enable failure after warm reboot")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 2be43abac5a839d44bf9d14716573ae0ac920f2b ]
Currently qca_suspend() is relied on IBS mechanism. During
FW download and memory dump collections, IBS will be disabled.
In those cases, driver will allow suspend and still uses the
serdev port, which results to errors. Now added a wait timeout
if suspend is triggered during FW download and memory collections.
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Signed-off-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Stable-dep-of: 272970be3dab ("Bluetooth: hci_qca: Fix driver shutdown on closed serdev")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit df4cfc91208e0a98f078223793f5871b1a82cc54 ]
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: 0ff252c1976d ("Bluetooth: hciuart: Add support QCA chipset for UART")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 72ef98445aca568a81c2da050532500a8345ad3a upstream.
While looking at a crash report on a timer list being corrupted, which
usually happens when a timer is freed while still active. This is
commonly triggered by code calling del_timer() instead of
del_timer_sync() just before freeing.
One possible culprit is the hci_qca driver, which does exactly that.
Eric mentioned that wake_retrans_timer could be rearmed via the work
queue, so also move the destruction of the work queue before
del_timer_sync().
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: stable@vger.kernel.org
Fixes: 0ff252c1976da ("Bluetooth: hciuart: Add support QCA chipset for UART")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 6845667146a28c09b5dfc401c1ad112374087944 ]
The function devm_gpiod_get_index() return error pointers on error.
Thus devm_gpiod_get_index_optional() could return NULL and error pointers.
The same as devm_gpiod_get_optional() function. Using IS_ERR_OR_NULL()
check to catch error pointers.
Fixes: 77131dfe ("Bluetooth: hci_qca: Replace devm_gpiod_get() with devm_gpiod_get_optional()")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit df1e5c51492fd93ffc293acdcc6f00698d19fedc ]
The IBS timers are not stopped properly once BT OFF is triggered.
we could see IBS commands being sent along with version command,
so stopped IBS timers while Bluetooth is off.
Fixes: 3e4be65eb82c ("Bluetooth: hci_qca: Add poweroff support during hci down for wcn3990")
Signed-off-by: Panicker Harish <quic_pharish@quicinc.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 59f90f1351282ea2dbd0c59098fd9bb2634e920e upstream.
In qca_power_shutdown() qcadev local variable is
initialized by hu->serdev.dev private data, but
hu->serdev can be NULL and there is a check for it.
Since, qcadev is not used before
if (!hu->serdev)
return;
we can move its initialization after this "if" to
prevent GPF.
Fixes: 5559904ccc08 ("Bluetooth: hci_qca: Add QCA Rome power off support to the qca_power_shutdown()")
Cc: stable@vger.kernel.org # v5.6+
Cc: Rocky Liao <rjliao@codeaurora.org>
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 547801380ec7e6104ea679f599d03c342b4b39a0 ]
WCN3991 supports connectable advertisements so we need to add the valid
le states quirk so the 'central-peripheral' role is exposed in
userspace.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 71f8e707557b9bc25dc90a59a752528d4e7c1cbf ]
When __le32_to_cpu() fails, qca_memdump should be freed
just like when vmalloc() fails.
Fixes: d841502c79e3f ("Bluetooth: hci_qca: Collect controller memory dump during SSR")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
During serdev unregister, hdev->shutdown is called before
proto close. Removing duplicates power OFF call.
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Because clk_disable_unprepare already checked
NULL clock parameter, so the additional check is
unnecessary, just remove it.
Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Setting memdump state to idle prior to setting of callback function
pointer for command timeout to NULL,causing the issue.Now moved the
initialisation of memdump state to qca_setup().
Fixes: d841502c79e3 ("Bluetooth: hci_qca: Collect controller memory dump during SSR")
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
1.During SSR for command time out if BT SoC goes to inresponsive
state, power cycling of BT SoC was not happening. Given the fix by
sending hw error event to reset the BT SoC.
2.If SSR is triggered then ignore the transmit data requests to
BT SoC until SSR is completed.
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Tx pending flag is set to true when HOST IBS state is AWAKE or
AWAKEING. If IBS state is ASLEEP, then Tx clock is already voted
off. To optimize further directly calling serial_clock_vote()
instead of qca_wq_serial_tx_clock_vote_off(), at this point of
qca_suspend() already data is sent out. No need to wake up hci to
send data.
Signed-off-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
In some version of WCN399x, SoC idle timeout is configured
as 80ms instead of 20ms or 40ms. To honor all the SoC's
supported in the driver increasing SoC idle timeout to 200ms.
Fixes: 41d5b25fed0a0 ("Bluetooth: hci_qca: add PM support")
Signed-off-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Due to race conditions between qca_hw_error and qca_controller_memdump
during SSR timeout,the same pointer is freed twice. This results in a
double free. Now a lock is acquired before checking the stauts of SSR
state.
Fixes: d841502c79e3 ("Bluetooth: hci_qca: Collect controller memory dump during SSR")
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
If waiting for IBS sleep times out jump to the error handler, this is
easier to read than multiple 'if' branches and a fall through to the
error handler.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
qca_suspend() calls serdev_device_wait_until_sent() regardless of
whether a transfer is pending. While it does no active harm since
the function should return immediately it makes the code more
confusing. Add a flag to track whether a transfer is pending and
only call serdev_device_wait_until_sent() is needed.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
qca_suspend() removes the vote for the UART TX clock after
writing an IBS sleep request to the serial buffer. This is
not a good idea since there is no guarantee that the request
has been sent at this point. Instead remove the vote after
successfully entering IBS sleep. This also fixes the issue
of the vote being removed in case of an aborted suspend due
to a failure of entering IBS sleep.
Fixes: 41d5b25fed0a0 ("Bluetooth: hci_qca: add PM support")
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The serial clocks should be on when there is a vote for at least one
of the clocks (RX or TX), and off when there is no 'on' vote. The
current logic to determine the combined state is a bit redundant
in the code paths for different types of votes, use a single
statement in the common path instead.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
When a function like devm_clk_get_optional() function returns both error
pointers on error and NULL then the NULL return means that the optional
feature is deliberately disabled. It is a special sort of success and
should not trigger an error message. The surrounding code should be
written to check for NULL and not crash.
On the other hand, if we encounter an error, then the probe from should
clean up and return a failure.
In this code, if devm_clk_get_optional() returns an error pointer then
the kernel will crash inside the call to:
clk_set_rate(qcadev->susclk, SUSCLK_RATE_32KHZ);
The error handling must be updated to prevent that.
Fixes: 77131dfec6af ("Bluetooth: hci_qca: Replace devm_gpiod_get() with devm_gpiod_get_optional()")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
QCA6390 memdump VSE sometimes come to bluetooth driver
with wrong sequence number as illustrated as follows:
frame # in dec: frame data in hex
1396: ff fd 01 08 74 05 00 37 8f 14
1397: ff fd 01 08 75 05 00 ff bf 38
1414: ff fd 01 08 86 05 00 fb 5e 4b
1399: ff fd 01 08 77 05 00 f3 44 0a
1400: ff fd 01 08 78 05 00 ca f7 41
it is mistook for controller missing packets, so results
in page fault after overwriting memdump buffer allocated.
Fixed by ignoring QCA6390 sequence number check and
checking buffer space before writing.
Signed-off-by: Zijun Hu <zijuhu@codeaurora.org>
Tested-by: Zijun Hu <zijuhu@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Warm reboot can not reset controller qca6390 due to
lack of controllable power supply, so causes firmware
download failure during enable.
Fixed by sending VSC EDL_SOC_RESET to reset qca6390
within added device shutdown implementation.
Signed-off-by: Zijun Hu <zijuhu@codeaurora.org>
Tested-by: Zijun Hu <zijuhu@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
@dev parameter of qca_suspend()/qca_resume() represents
serdev_device, but it is mistook for hci_dev and causes
succedent unexpected memory access.
Fix by taking @dev as serdev_device.
Fixes: 41d5b25fed0 ("Bluetooth: hci_qca: add PM support")
Signed-off-by: Zijun Hu <zijuhu@codeaurora.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
hdev is always allocated and not only when power control is required.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
WCN3991 supports transparent WBS (host encoded mSBC). Add a flag to the
device match data to show WBS is supported.
This requires the matching firmware for WCN3991 in linux-firmware:
1a8b0dc00f77 (qca: Enable transparent WBS for WCN3991)
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Move the read of max-speed from device-tree out of the qca_is_wcn399x
if block so oper_speed can be set for QCA9377 devices as well.
Suggested-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Add a compatible so QCA9377 devices can be defined in device-tree.
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds support for QCA6390, including the devicetree and acpi
compatible hwid matching, and patch/nvm downloading.
Signed-off-by: Rocky Liao <rjliao@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch replaces devm_gpiod_get() with devm_gpiod_get_optional() to get
bt_en and replaces devm_clk_get() with devm_clk_get_optional() to get
susclk. It also uses NULL check to determine whether the resource is
available or not.
Fixes: 8a208b24d770 ("Bluetooth: hci_qca: Make bt_en and susclk not mandatory for QCA Rome")
Signed-off-by: Rocky Liao <rjliao@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
On some platforms the bt_en pin and susclk are default on and there
is no exposed resource to control them. This patch makes the bt_en
and susclk not mandatory to have BT work. It also will not set the
HCI_QUIRK_NON_PERSISTENT_SETUP and shutdown() callback if bt_en is
not available.
Signed-off-by: Rocky Liao <rjliao@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
QCA Rome doesn't support the pre-shutdown vendor hci command, this patch
will check the soc type in qca_power_off() and only send this command
for wcn399x.
Fixes: ae563183b647 ("Bluetooth: hci_qca: Enable power off/on support during hci down/up for QCA Rome")
Signed-off-by: Rocky Liao <rjliao@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch will fix the below issues
1. Discarding memory dump events if memdump state is moved to
MEMDUMP_TIMEOUT.
2. Fixed race conditions between qca_hw_error() and qca_controller_memdump
while free memory dump buffers using mutex lock
3. Moved timeout timer to delayed work queue
4. Injecting HW error event in a case when dumps failed to receive and HW
error event is not yet received.
5. Clearing hw error and command timeout function callbacks before
sending pre shutdown command.
Collecting memory dump will follow any of the below sequence.
Sequence 1:
Receiving Memory dump events from the controller
Received entire dump in stipulated time
Received HW error event from the controller
Controller Reset from HOST
Sequence 2:
Receiving Memory dump events from the controller
Failed to Receive entire dump in stipulated time
A Timeout schedules and if no HW error event received a fake HW
error event will be injected.
Controller Reset from HOST.
Sequence 3:
Received HW error event
HOST trigger SSR by sending crash packet to controller.
Received entire dump in stipulated time
Controller Reset from HOST
Fixes: d841502c79e3 ("Bluetooth: hci_qca: Collect controller memory dump during SSR")
Reported-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Directly passing clock pointer to clock code without checking for NULL
as clock code takes care of it
* Removed the comment which was not necessary
* Updated code for return in qca_regulator_enable()
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Instead of relying on other subsytem to turn ON clocks
required for BT SoC to operate, voting them from the driver.
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch registers hdev->shutdown() callback and also sets
HCI_QUIRK_NON_PERSISTENT_SETUP for QCA Rome. It will power-off the BT chip
during hci down and power-on/initialize the chip again during hci up. As
wcn399x already enabled this, this patch also removed the callback register
and QUIRK setting in qca_setup() for wcn399x and uniformly do this in the
probe() routine.
Signed-off-by: Rocky Liao <rjliao@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds the retry of btsoc initialization when it fails. There are
reports that the btsoc initialization may fail on some platforms but the
repro ratio is very low. The symptoms is the firmware downloading failed
due to the UART write timed out. The failure may be caused by UART,
platform HW or the btsoc itself but it's very difficlut to root cause,
given the repro ratio is very low. Add a retry for the btsoc initialization
can work around most of the failures and make Bluetooth finally works.
Signed-off-by: Rocky Liao <rjliao@codeaurora.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Current qca_power_shutdown() only supports wcn399x, this patch adds Rome
power off support to it. For Rome it just needs to pull down the bt_en
GPIO to power off it. This patch also replaces all the power off operation
in qca_close() with the unified qca_power_shutdown() call.
Signed-off-by: Rocky Liao <rjliao@codeaurora.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds a unified API qca_power_on() to support both wcn399x and
Rome power on. For wcn399x it calls the qca_wcn3990_init() to init the
regulators, and for Rome it pulls up the bt_en GPIO to power up the btsoc.
It also moves all the power up operation from hdev->open() to
hdev->setup().
Signed-off-by: Rocky Liao <rjliao@codeaurora.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/bluetooth/hci_qca.c: In function 'qca_controller_memdump':
drivers/bluetooth/hci_qca.c:980:6: warning:
variable 'opcode' set but not used [-Wunused-but-set-variable]
It is never used since commit d841502c79e3 ("Bluetooth: hci_qca: Collect
controller memory dump during SSR"), so remove it.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
We will collect the ramdump of BT controller when hardware error event
received before rebooting the HCI layer. Before restarting a subsystem
or a process running on a subsystem, it is often required to request
either a subsystem or a process to perform proper cache dump and
software failure reason into a memory buffer which application
processor can retrieve afterwards. SW developers can often provide
initial investigation by looking into that debugging information.
Signed-off-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Replace of_device_get_match_data with device_get_match_data to make driver
work across platforms.
Signed-off-by: Rocky Liao <rjliao@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch add support for WCN3991 i.e. current values and fw download
support.
Signed-off-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Add PM suspend/resume callbacks for hci_qca driver.
BT host will make sure both Rx and Tx go into sleep state in
qca_suspend. Without this, Tx may still remain in awake state, which
prevents BTSOC from entering deep sleep. For example, BlueZ will send
Set Event Mask to device when suspending and this will wake the device
Rx up. However, the Tx idle timeout on the host side is 2000 ms. If the
host is suspended before its Tx idle times out, it won't send
HCI_IBS_SLEEP_IND to the device and the device Rx will remain awake.
We implement this by canceling relevant work in workqueue, sending
HCI_IBS_SLEEP_IND to the device and then waiting HCI_IBS_SLEEP_IND sent
by the device.
In order to prevent the device from being awaken again after qca_suspend
is called, we introduce QCA_SUSPEND flag. QCA_SUSPEND is set in the
beginning of qca_suspend to indicate system is suspending and that we'd
like to ignore any further wake events.
With QCA_SUSPEND and spinlock, we can avoid race condition, e.g. if
qca_enqueue acquires qca->hci_ibs_lock before qca_suspend calls
cancel_work_sync and then qca_enqueue adds a new qca->ws_awake_device
work after the previous one is cancelled.
If BTSOC wants to wake the whole system up after qca_suspend is called,
it will keep sending HCI_IBS_WAKE_IND and uart driver will take care of
waking the system. For example, uart driver will reconfigure its Rx pin
to a normal GPIO pin and enable irq wake on that pin when suspending.
Once host detects Rx falling, the system will begin resuming. Then, the
BT host clears QCA_SUSPEND flag in qca_resume and begins dealing with
normal HCI packets. By doing so, only a few HCI_IBS_WAKE_IND packets are
lost and there is no data packet loss.
Signed-off-by: Claire Chang <tientzu@chromium.org>
Reviewed-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
