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Stephan Gerhold d4f35233a6 i2c: qup: Vote for interconnect bandwidth to DRAM 
When the I2C QUP controller is used together with a DMA engine it needs
to vote for the interconnect path to the DRAM. Otherwise it may be
unable to access the memory quickly enough.

The requested peak bandwidth is dependent on the I2C core clock.

To avoid sending votes too often the bandwidth is always requested when
a DMA transfer starts, but dropped only on runtime suspend. Runtime
suspend should only happen if no transfer is active. After resumption we
can defer the next vote until the first DMA transfer actually happens.

The implementation is largely identical to the one introduced for
spi-qup in commit ecdaa94730 ("spi: qup: Vote for interconnect
bandwidth to DRAM") since both drivers represent the same hardware
block.

Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20231128-i2c-qup-dvfs-v1-3-59a0e3039111@kernkonzept.com
History 2025-03-18 21:53:53 +01:00
..
accel An reset signal polarity fix for the jd9365da-h3 panel, a folio handling 2025-02-21 09:16:35 +10:00
accessibility speakup: use SPKDIR=$(src) to specify the source directory 2024-11-04 17:53:09 +09:00
acpi ACPI: platform_profile: Add support for hidden choices 2025-03-04 20:45:34 +01:00
amba ARM: 9415/1: amba: Add dev_is_amba() function and export it for modules 2024-11-12 16:41:45 +00:00
android binderfs: fix use-after-free in binder_devices 2025-02-20 15:20:11 +01:00
ata ata fixes for 6.14-rc5 2025-03-01 08:59:29 -08:00
atm Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
auxdisplay auxdisplay for v6.14-1 2025-01-24 08:03:52 -08:00
base drivers: core: fix device leak in __fw_devlink_relax_cycles() 2025-02-20 13:26:30 +01:00
bcma Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
block block-6.14-20250313 2025-03-14 11:22:05 -10:00
bluetooth Bluetooth: btusb: Configure altsetting for HCI_USER_CHANNEL 2025-03-07 12:43:27 -05:00
bus bus: simple-pm-bus: fix forced runtime PM use 2025-02-20 15:22:02 +01:00
cache cache: StarFive: Require a 64-bit system 2024-08-01 07:15:02 -07:00
cdrom treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
cdx cdx: Fix possible UAF error in driver_override_show() 2025-02-20 15:19:07 +01:00
char Char/Misc/IIO driver fixes for 6.14-rc6 2025-03-09 09:07:54 -10:00
clk Samsung clock controller fixes for v6.14 2025-03-11 10:51:13 -07:00
clocksource irqchip/jcore-aic, clocksource/drivers/jcore: Fix jcore-pit interrupt request 2025-02-17 23:27:49 +01:00
comedi comedi: Flush partial mappings in error case 2024-11-05 14:01:07 +01:00
connector connector/cn_proc: revert "connector: Fix proc_event_num_listeners count not cleared" 2024-02-13 11:15:44 +01:00
counter module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
cpufreq amd-pstate fixes 2/6/25 2025-02-06 20:39:43 +01:00
cpuidle More power management updates for 6.14-rc1 2025-01-30 15:10:34 -08:00
crypto crypto: ccp: Add external API interface for PSP module initialization 2025-02-14 18:39:19 -05:00
cxl cxl changes for v6.14 2025-01-29 11:23:22 -08:00
dax module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
dca Driver core changes for 6.11-rc1 2024-07-25 10:42:22 -07:00
devfreq Update devfreq next for v6.14 2025-01-13 20:48:34 +01:00
dio dio: Have dio_bus_match() callback take a const * 2024-07-10 15:38:14 +02:00
dma dmaengine fixes for v6.14 2025-03-02 10:08:45 -08:00
dma-buf Merge tag 'drm-misc-fixes-2024-12-19' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes 2024-12-20 07:13:45 +10:00
dpll dpll: add clock quality level attribute and op 2024-11-03 08:39:07 -08:00
edac EDAC/qcom: Correct interrupt enable register configuration 2025-02-14 20:36:11 +01:00
eisa driver core: have match() callback in struct bus_type take a const * 2024-07-03 15:16:54 +02:00
extcon Update extcon next for v6.14 2025-01-12 13:44:27 +01:00
firewire Driver core and debugfs updates 2025-01-28 12:25:12 -08:00
firmware EFI fixes for v6.14 #2 2025-02-28 08:47:21 -08:00
fpga FPGA Manager changes for 6.14-rc1 2025-01-09 10:56:57 +01:00
fsi Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
gnss [tree-wide] finally take no_llseek out 2024-09-27 08:18:43 -07:00
gpio gpio: cdev: use raw notifier for line state events 2025-03-13 09:20:12 +01:00
gpu drm fixes for 6.14-rc7 2025-03-13 22:45:25 -10:00
greybus greybus: Fix a typo 2024-11-05 05:33:46 +01:00
hid hid-for-linus-2025030501 2025-03-05 07:46:59 -10:00
hsi Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
hte Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
hv Drivers: hv: vmbus: Don't release fb_mmio resource in vmbus_free_mmio() 2025-03-10 16:54:06 +00:00
hwmon hwmon: fix a NULL vs IS_ERR_OR_NULL() check in xgene_hwmon_probe() 2025-03-03 06:04:34 -08:00
hwspinlock Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
hwtracing intel_th: pci: Add Panther Lake-P/U support 2025-02-20 09:35:57 +01:00
i2c i2c: qup: Vote for interconnect bandwidth to DRAM 2025-03-18 21:53:53 +01:00
i3c I3C for 6.14 2025-01-24 15:48:01 -08:00
idle intel_idle: Handle older CPUs, which stop the TSC in deeper C states, correctly 2025-02-28 22:04:26 +01:00
iio iio: filter: admv8818: Force initialization of SDO 2025-02-08 12:46:32 +00:00
infiniband RDMA/bnxt_re: Fix the page details for the srq created by kernel consumers 2025-02-23 06:57:56 -05:00
input Input updates for v6.14-rc6 2025-03-15 15:46:29 -10:00
interconnect interconnect changes for 6.14 2025-01-16 14:01:40 +01:00
iommu iommu/vt-d: Fix suspicious RCU usage 2025-02-28 12:19:01 +01:00
ipack driver core: have match() callback in struct bus_type take a const * 2024-07-03 15:16:54 +02:00
irqchip irqchip/qcom-pdc: Workaround hardware register bug on X1E80100 2025-02-21 09:47:06 +01:00
isdn isdn: Remove unused get_Bprotocol4id() 2024-12-11 20:12:27 -08:00
leds leds: leds-st1202: Fix NULL pointer access on race condition 2025-02-28 09:18:37 +00:00
macintosh The various patchsets are summarized below. Plus of course many 2025-01-26 18:36:23 -08:00
mailbox mailbox: th1520: Fix memory corruption due to incorrect array size 2025-01-18 16:20:55 -06:00
mcb module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
md - dm-flakey: fix memory corruption in optional corrupt_bio_byte feature 2025-03-14 11:31:57 -10:00
media media: rtl2832_sdr: assign vb2 lock before vb2_queue_init 2025-03-12 16:43:51 +01:00
memory spi: Support DTR in spi-mem 2025-01-15 19:07:39 +01:00
memstick Char/Misc/IIO driver updates for 6.14-rc1 2025-01-27 16:51:51 -08:00
message Merge branch '6.13/scsi-fixes' into 6.14/scsi-staging 2025-01-10 15:20:30 -05:00
mfd mfd: syscon: Restore device_node_to_regmap() for non-syscon nodes 2025-02-11 14:53:39 +00:00
misc Revert "drivers/card_reader/rtsx_usb: Restore interrupt based detection" 2025-02-27 12:24:53 -08:00
mmc mmc: mtk-sd: Fix register settings for hs400(es) mode 2025-02-03 13:34:50 +01:00
most Driver core changes for 6.11-rc1 2024-07-25 10:42:22 -07:00
mtd Fix writes on SST flashes 2025-02-19 14:38:47 +01:00
mux mux: constify mux class 2025-01-10 10:15:04 +01:00
net net: mana: cleanup mana struct after debugfs_remove() 2025-03-13 13:26:35 +01:00
nfc nfc: mrvl: Don't use "proxy" headers 2025-01-18 17:10:05 -08:00
ntb PCI: Remove devres from pci_intx() 2025-01-18 14:38:49 -06:00
nubus nubus: Make nubus_bus_type static and constant 2024-01-03 13:33:59 +01:00
nvdimm driver core: Constify API device_find_child() and adapt for various usages 2025-01-03 11:19:35 +01:00
nvme nvme fixes for Linux 6.14 2025-03-13 09:41:57 -06:00
nvmem nvmem: core: improve range check for nvmem_cell_write() 2025-01-10 16:16:48 +01:00
of Revert "of: reserved-memory: Fix using wrong number of cells to get property 'alignment'" 2025-02-26 13:39:28 -06:00
opp Driver core and debugfs updates 2025-01-28 12:25:12 -08:00
parisc Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
parport serial: 8250_pci: Share WCH IDs with parport_serial driver 2024-12-04 16:42:55 +01:00
pci pci-v6.14-fixes-3 2025-02-14 16:49:07 -08:00
pcmcia Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
peci module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
perf treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
phy phy: tegra: xusb: reset VBUS & ID OVERRIDE 2025-02-14 18:03:05 +05:30
pinctrl pinctrl: spacemit: enable config option 2025-02-25 17:22:36 +01:00
platform platform-drivers-x86 for v6.14-5 2025-03-14 10:57:28 -10:00
pmdomain pmdomain: airoha: Fix compilation error with Clang-20 and Thumb2 mode 2025-01-21 10:45:24 +01:00
pnp driver core: have match() callback in struct bus_type take a const * 2024-07-03 15:16:54 +02:00
power power: supply: axp20x_battery: Fix fault handling for AXP717 2025-02-03 12:41:18 +01:00
powercap Merge branch 'pm-powercap' 2025-02-07 12:43:58 +01:00
pps pps: clients: gpio: Bypass edge's direction check when not needed 2025-01-10 16:12:33 +01:00
ps3 ps3: Correct some typos in comments 2024-11-15 00:32:29 +11:00
ptp ptp: vmclock: Remove goto-based cleanup logic 2025-02-11 10:20:52 +01:00
pwm Driver core and debugfs updates 2025-01-28 12:25:12 -08:00
rapidio rapidio: add check for rio_add_net() in rio_scan_alloc_net() 2025-03-05 21:36:19 -08:00
ras x86/amd_nb: Move SMN access code to a new amd_node driver 2025-01-08 10:59:44 +01:00
regulator regulator: core: let dt properties override driver init_data 2025-02-11 16:29:01 +00:00
remoteproc remoteproc: st: Use syscon_regmap_lookup_by_phandle_args 2025-01-15 10:04:27 -07:00
reset soc: driver updates for 6.14 2025-01-24 14:56:59 -08:00
rpmsg driver core: Constify API device_find_child() and adapt for various usages 2025-01-03 11:19:35 +01:00
rtc RTC for 6.13 2025-01-30 17:50:02 -08:00
s390 Smaller than usual with no fixes from any subtree. 2025-02-20 10:19:54 -08:00
sbus Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
scsi scsi: core: Clear driver private data when retrying request 2025-02-20 21:20:58 -05:00
sh sh updates for v6.13 2024-11-30 14:45:29 -08:00
siox Driver core changes for 6.11-rc1 2024-07-25 10:42:22 -07:00
slimbus slimbus: messaging: Free transaction ID in delayed interrupt scenario 2025-02-20 15:19:51 +01:00
soc soc: loongson: loongson2_guts: Add check for devm_kstrdup() 2025-02-20 22:29:05 +01:00
soundwire soundwire updates for 6.14 2025-01-29 14:38:19 -08:00
spi spi: microchip-core: prevent RX overflows when transmit size > FIFO size 2025-03-03 12:10:03 +00:00
spmi spmi: hisi-spmi-controller: Drop duplicated OF node assignment in spmi_controller_probe() 2025-01-17 12:58:49 +01:00
ssb driver core: have match() callback in struct bus_type take a const * 2024-07-03 15:16:54 +02:00
staging Driver core and debugfs updates 2025-01-28 12:25:12 -08:00
target Merge branch '6.14/scsi-queue' into 6.14/scsi-fixes 2025-02-03 16:28:51 -05:00
tc TC: Fix the wrong format specifier 2024-11-12 15:48:08 +01:00
tee tee: optee: Fix supplicant wait loop 2025-02-14 15:17:34 +01:00
thermal thermal: gov_power_allocator: Update total_weight on bind and cdev updates 2025-02-25 12:30:45 +01:00
thunderbolt thunderbolt: Prevent use-after-free in resume from hibernate 2025-03-07 14:00:58 +02:00
tty Serial driver fixes for 6.14-rc3 2025-02-16 12:50:44 -08:00
ufs scsi: ufs: core: bsg: Fix crash when arpmb command fails 2025-02-20 22:18:24 -05:00
uio Char/Misc/IIO driver updates for 6.14-rc1 2025-01-27 16:51:51 -08:00
usb usb: typec: tcpm: fix state transition for SNK_WAIT_CAPABILITIES state in run_state_machine() 2025-03-14 09:15:20 +01:00
vdpa virtio: features, fixes, cleanups 2025-01-27 15:26:06 -08:00
vfio VFIO updates for v6.14-rc1 2025-01-28 14:16:46 -08:00
vhost vhost: return task creation error instead of NULL 2025-03-01 02:52:52 -05:00
video fbdev: hyperv_fb: Allow graceful removal of framebuffer 2025-03-09 23:56:29 +00:00
virt Char/Misc/IIO driver fixes for 6.14-rc6 2025-03-09 09:07:54 -10:00
virtio virtio: features, fixes, cleanups 2025-01-27 15:26:06 -08:00
w1 1-Wire bus drivers for v6.14 2025-01-09 10:54:19 +01:00
watchdog linux-watchdog 6.14-rc1 tag 2025-01-25 16:19:10 -08:00
xen xen: branch for v6.14-rc3 2025-02-14 08:15:17 -08:00
zorro zorro: Constify 'struct bin_attribute' 2025-01-08 18:04:36 +01:00
Kconfig - removed AR7 platform support 2023-11-10 09:19:46 -08:00
Makefile leds: Init leds class earlier 2024-09-04 17:24:58 -05:00