From: Kalle Valo <quic_kvalo@xxxxxxxxxxx> Currently in ath11k we keep the firmware running on the WLAN device when the network interface (wlan0) is down. The problem is that this will break hibernation, obviously the firmware can't be running after the whole system is powered off. To power down the ath11k firmware for suspend/hibernation some changes both in MHI subsystem and ath11k is needed. This patchset fixes a longstanding bug report about broken hibernation support: https://bugzilla.kernel.org/show_bug.cgi?id=214649 This patchset is marked as RFC as it requires changes in MHI subsystem. Also this has been tested only on WCN6855, need to test also on more AP based chipsets like IPQ8074 and QCN9074. The patches are also available at: https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/log/?h=ath11k-hibernation-support Earlier versions of this patchset have been tested by multiple users with positive results. Takashi also tested this latest version: Tested-by: Takashi Iwai <tiwai@xxxxxxx> Baochen Qiang (7): bus: mhi: host: add mhi_power_down_no_destroy() bus: mhi: host: add new interfaces to handle MHI channels directly wifi: ath11k: handle irq enable/disable in several code path wifi: ath11k: remove MHI LOOPBACK channels wifi: ath11k: do not dump SRNG statistics during resume wifi: ath11k: fix warning on DMA ring capabilities event wifi: ath11k: support hibernation Kalle Valo (1): wifi: ath11k: thermal: don't try to register multiple times drivers/bus/mhi/host/internal.h | 1 + drivers/bus/mhi/host/main.c | 91 +++++++++++++++++++++++ drivers/bus/mhi/host/pm.c | 26 +++++-- drivers/net/wireless/ath/ath11k/ahb.c | 8 +- drivers/net/wireless/ath/ath11k/core.c | 44 ++++++----- drivers/net/wireless/ath/ath11k/core.h | 2 + drivers/net/wireless/ath/ath11k/hif.h | 12 +-- drivers/net/wireless/ath/ath11k/mhi.c | 49 +++++------- drivers/net/wireless/ath/ath11k/mhi.h | 4 +- drivers/net/wireless/ath/ath11k/pci.c | 55 ++++++++++++-- drivers/net/wireless/ath/ath11k/qmi.c | 7 +- drivers/net/wireless/ath/ath11k/thermal.c | 3 + drivers/net/wireless/ath/ath11k/wmi.c | 1 + include/linux/mhi.h | 47 +++++++++++- 14 files changed, 268 insertions(+), 82 deletions(-) base-commit: f24dee89bb8a7ef33c28e31632b1f3dd4e196413 -- 2.39.2
