Claire Chang 41d5b25fed Bluetooth: hci_qca: add PM support ... 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>		2019-11-04 15:17:52 +01:00
..
accessibility	…
acpi	ACPI fixes for 5.4-rc4	2019-10-18 08:38:26 -07:00
amba	ARM updates for 5.4-rc1:	2019-09-22 09:39:09 -07:00
android	binder: Fix comment headers on binder_alloc_prepare_to_free()	2019-10-10 14:39:23 +02:00
ata	libata/ahci: Fix PCS quirk application	2019-10-15 14:10:19 -06:00
atm	atm: he: clean up an indentation issue	2019-09-25 13:54:45 +02:00
auxdisplay	It's a somewhat calmer cycle for docs this time, as the churn of the mass	2019-09-17 16:22:26 -07:00
base	drivers/base/memory.c: don't access uninitialized memmaps in soft_offline_page_store()	2019-10-19 06:32:31 -04:00
bcma	bcma: make arrays pwr_info_offset and sprom_sizes static const, shrinks object size	2019-09-13 16:44:49 +03:00
block	zram: fix race between backing_dev_show and backing_dev_store	2019-10-19 06:32:32 -04:00
bluetooth	Bluetooth: hci_qca: add PM support	2019-11-04 15:17:52 +01:00
bus	ARM: SoC fixes	2019-09-30 10:04:28 -07:00
cdrom	…
char	char/random: Add a newline at the end of the file	2019-10-02 13:49:43 -07:00
clk	Fixes for omaps for v5.4-rc cycle	2019-10-03 09:15:19 -07:00
clocksource	timer-of: don't use conditional expression with mixed 'void' types	2019-10-02 16:16:07 -07:00
connector	…
counter	…
cpufreq	cpufreq: Avoid cpufreq_suspend() deadlock on system shutdown	2019-10-10 11:11:17 +02:00
cpuidle	Power management updates for 5.4-rc1	2019-09-17 19:15:14 -07:00
crypto	net/tls: allow compiling TLS TOE out	2019-10-04 14:07:07 -07:00
dax	…
dca	…
devfreq	…
dio	…
dma	Main MIPS changes for v5.4:	2019-09-22 09:30:30 -07:00
dma-buf	dma-buf/resv: fix exclusive fence get	2019-10-10 17:05:20 +02:00
edac	ARM updates for 5.4-rc1:	2019-09-22 09:39:09 -07:00
eisa	…
extcon	chrome platform changes for v5.4	2019-09-19 14:14:28 -07:00
firewire	…
firmware	Merge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging	2019-10-15 09:20:07 -07:00
fpga	Char/Misc driver patches for 5.4-rc1	2019-09-18 11:14:31 -07:00
fsi	fsi: scom: Don't abort operations for minor errors	2019-08-28 22:59:18 +02:00
gnss	…
gpio	gpio: lynxpoint: set default handler to be handle_bad_irq()	2019-10-15 01:19:05 +02:00
gpu	-dma-resv: Change shared_count to post-increment to fix lima crash (Qiang)	2019-10-18 06:40:28 +10:00
greybus	staging: greybus: move es2 to drivers/greybus/	2019-08-27 19:03:08 +02:00
hid	HID: hyperv: Use in-place iterator API in the channel callback	2019-10-01 14:49:41 -04:00
hsi	HSI changes for the 5.4 series	2019-09-22 12:02:21 -07:00
hv	Drivers: hv: vmbus: Fix harmless building warnings without CONFIG_PM_SLEEP	2019-10-01 14:49:45 -04:00
hwmon	hwmon: (nct7904) Add array fan_alarm and vsen_alarm to store the alarms in nct7904_data struct.	2019-10-02 06:42:48 -07:00
hwspinlock	…
hwtracing	Char/Misc driver patches for 5.4-rc1	2019-09-18 11:14:31 -07:00
i2c	i2c: slave-eeprom: Add read only mode	2019-09-28 20:44:12 +02:00
i3c	i3c: master: Use dev_to_i3cmaster()	2019-08-27 09:43:59 +02:00
ide	…
idle	x86/intel: Aggregate microserver naming	2019-08-28 11:29:32 +02:00
iio	First set of IIO fixes for the 5.4 cycle.	2019-10-10 11:18:37 +02:00
infiniband	RDMA/mlx5: Add missing synchronize_srcu() for MW cases	2019-10-04 15:54:22 -03:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2019-10-17 11:18:44 -07:00
interconnect	…
iommu	iommu/amd: Check PM_LEVEL_SIZE() condition in locked section	2019-10-18 16:52:37 +02:00
ipack	…
irqchip	Main MIPS changes for v5.4:	2019-09-22 09:30:30 -07:00
isdn	mISDN: enforce CAP_NET_RAW for raw sockets	2019-09-24 16:37:18 +02:00
leds	leds: lm3532: Fix optional led-max-microamp prop error handling	2019-09-12 20:45:52 +02:00
lightnvm	lightnvm: print error when target is not found	2019-09-05 13:17:01 -06:00
macintosh	…
mailbox	mailbox: qcom-apcs: fix max_register value	2019-09-17 00:54:29 -05:00
mcb	…
md	for-linus-2019-10-18	2019-10-18 22:29:36 -04:00
media	media: stkwebcam: fix runtime PM after driver unbind	2019-10-04 14:38:46 +02:00
memory	iommu/mediatek: Clean up struct mtk_smi_iommu	2019-08-30 15:57:27 +02:00
memstick	memstick: jmb38x_ms: Fix an error handling path in 'jmb38x_ms_probe()'	2019-10-09 11:08:03 +02:00
message	…
mfd	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal	2019-09-29 10:24:23 -07:00
misc	misc: fastrpc: prevent memory leak in fastrpc_dma_buf_attach	2019-10-04 18:22:14 +02:00
mmc	mmc: sdhci-iproc: fix spurious interrupts on Multiblock reads with bcm2711	2019-10-09 11:05:50 +02:00
mtd	mtd: rawnand: au1550nd: Fix au_read_buf16() prototype	2019-10-07 09:56:36 +02:00
mux	…
net	ionic: update driver version	2019-10-25 20:52:36 -07:00
nfc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-10-20 10:43:00 -07:00
ntb	NTB: fix IDT Kconfig typos/spellos	2019-09-23 17:20:40 -04:00
nubus	…
nvdimm	libnvdimm fixes v5.4-rc1	2019-09-29 10:33:41 -07:00
nvme	nvme-pci: Set the prp2 correctly when using more than 4k page	2019-10-18 23:09:41 +09:00
nvmem	Char/Misc driver patches for 5.4-rc1	2019-09-18 11:14:31 -07:00
of	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-09-28 17:47:33 -07:00
opp	…
oprofile	…
parisc	parisc: Remove 32-bit DMA enforcement from sba_iommu	2019-10-14 21:44:26 +02:00
parport	Char/Misc driver patches for 5.4-rc1	2019-09-18 11:14:31 -07:00
pci	PCI: PM: Fix pci_power_up()	2019-10-15 23:51:36 +02:00
pcmcia	Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2019-09-28 08:14:15 -07:00
perf	Merge branches 'for-next/52-bit-kva', 'for-next/cpu-topology', 'for-next/error-injection', 'for-next/perf', 'for-next/psci-cpuidle', 'for-next/rng', 'for-next/smpboot', 'for-next/tbi' and 'for-next/tlbi' into for-next/core	2019-08-30 12:46:12 +01:00
phy	pci-v5.4-changes	2019-09-23 19:16:01 -07:00
pinctrl	This is the bulk of pin control changes for the v5.4 kernel	2019-09-19 14:19:33 -07:00
platform	platform/x86: i2c-multi-instantiate: Fail the probe if no IRQ provided	2019-10-14 15:31:50 +03:00
pnp	…
power	power supply and reset changes for the v5.4 series	2019-09-22 12:04:59 -07:00
powercap	Power management updates for 5.4-rc1	2019-09-17 19:15:14 -07:00
pps	…
ps3	…
ptp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-10-20 10:43:00 -07:00
pwm	pwm: Changes for v5.4-rc1	2019-09-27 12:19:47 -07:00
rapidio	…
ras	…
regulator	LED updates for 5.4-rc1	2019-09-17 18:40:42 -07:00
remoteproc	remoteproc updates for v5.4	2019-09-22 10:55:08 -07:00
reset	ARM: SoC fixes	2019-09-30 10:04:28 -07:00
rpmsg	rpmsg: glink-smem: Name the edge based on parent remoteproc	2019-09-17 15:33:31 -07:00
rtc	RTC for 5.4	2019-09-22 11:05:43 -07:00
s390	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-10-19 17:09:11 -04:00
sbus	…
scsi	Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>	2019-10-18 08:08:53 -07:00
sfi	…
sh	…
siox	…
slimbus	…
soc	ARM: SoC driver updates for v5.4	2019-09-16 15:52:38 -07:00
soundwire	soundwire updates for v5.4-rc1	2019-09-22 10:52:23 -07:00
spi	spi: Add a PTP system timestamp to the transfer structure	2019-10-08 17:38:15 +01:00
spmi	…
ssb	ssb: make array pwr_info_offset static const, makes object smaller	2019-09-13 17:23:18 +03:00
staging	Staging/IIO driver fixes for 5.4-rc3	2019-10-12 15:44:46 -07:00
target	mm: introduce page_size()	2019-09-24 15:54:08 -07:00
tc	…
tee	tee/shm: untag user pointers in tee_shm_register	2019-09-25 17:51:41 -07:00
thermal	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal	2019-09-29 10:24:23 -07:00
thunderbolt	…
tty	tty: serial: imx: Use platform_get_irq_optional() for optional IRQs	2019-10-10 13:12:28 +02:00
uio	Char/Misc driver patches for 5.4-rc1	2019-09-18 11:14:31 -07:00
usb	USB: yurex: fix NULL-derefs on disconnect	2019-10-10 14:24:06 +02:00
vfio	vfio/type1: untag user pointers in vaddr_get_pfn	2019-09-25 17:51:41 -07:00
vhost	vhost/test: stop device before reset	2019-10-13 09:38:27 -04:00
video	video/logo: do not generate unneeded logo C files	2019-10-05 15:29:49 +09:00
virt	virt: vbox: fix memory leak in hgcm_call_preprocess_linaddr	2019-10-10 14:50:32 +02:00
virtio	virtio_ring: fix unmap of indirect descriptors	2019-09-09 10:43:15 -04:00
visorbus	…
vlynq	…
vme	…
w1	w1: ds250x: Fix build error without CRC16	2019-10-10 15:35:41 +02:00
watchdog	linux-watchdog 5.4-rc1 tag	2019-09-27 11:17:38 -07:00
xen	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-10-19 17:09:11 -04:00
zorro	…
Kconfig	Staging/IIO driver patches for 5.4-rc1	2019-09-18 11:05:34 -07:00
Makefile	Staging/IIO driver patches for 5.4-rc1	2019-09-18 11:05:34 -07:00