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8531e283be
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Lukas Wunner 8531e283be PCI: Recognize Thunderbolt devices 
Detect on probe whether a PCI device is part of a Thunderbolt controller.
Intel uses a Vendor-Specific Extended Capability (VSEC) with ID 0x1234
on such devices.  Detect presence of this VSEC and cache it in a newly
added is_thunderbolt bit in struct pci_dev.

Also, add a helper to check whether a given PCI device is situated on a
Thunderbolt daisy chain (i.e., below a PCI device with is_thunderbolt
set).

The necessity arises from the following:

* If an external Thunderbolt GPU is connected to a dual GPU laptop,
  that GPU is currently registered with vga_switcheroo even though it
  can neither drive the laptop's panel nor be powered off by the
  platform.  To vga_switcheroo it will appear as if two discrete
  GPUs are present.  As a result, when the external GPU is runtime
  suspended, vga_switcheroo will cut power to the internal discrete GPU
  which may not be runtime suspended at all at this moment.  The
  solution is to not register external GPUs with vga_switcheroo, which
  necessitates a way to recognize if they're on a Thunderbolt daisy
  chain.

* Dual GPU MacBook Pros introduced 2011+ can no longer switch external
  DisplayPort ports between GPUs.  (They're no longer just used for DP
  but have become combined DP/Thunderbolt ports.)  The driver to switch
  the ports, drivers/platform/x86/apple-gmux.c, needs to detect presence
  of a Thunderbolt controller and, if found, keep external ports
  permanently switched to the discrete GPU.

v2: Make kerneldoc for pci_is_thunderbolt_attached() more precise,
    drop portion of commit message pertaining to separate series.
    (Bjorn Helgaas)

Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Michael Jamet <michael.jamet@intel.com>
Cc: Tomas Winkler <tomas.winkler@intel.com>
Cc: Amir Levy <amir.jer.levy@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: http://patchwork.freedesktop.org/patch/msgid/0ab165a4a35c0b60f29d4c306c653ead14fcd8f9.1489145162.git.lukas@wunner.de
2017-03-30 22:42:30 +02:00
..
accessibility
acpi acpi/processor: Check for duplicate processor ids at hotplug time 2017-03-11 14:41:20 +01:00
amba
android sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
ata ahci: qoriq: correct the sata ecc setting error 2017-03-09 11:55:23 -05:00
atm sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
auxdisplay auxdisplay: ht16k33: remove private workqueue 2017-02-10 15:57:28 +01:00
base drivers core: remove assert_held_device_hotplug() 2017-03-16 16:56:19 -07:00
bcma
block A fix for the recently discovered misdirected requests bug present in 2017-03-10 11:05:47 -08:00
bluetooth btmrvl: fix spelling mistake: "actived" -> "activated" 2017-02-19 00:26:37 +01:00
bus ARM: SoC driver updates 2017-02-23 15:57:04 -08:00
cdrom Merge branch 'for-4.11/next' into for-4.11/linus-merge 2017-02-17 14:08:19 -07:00
char Linux 4.11-rc3 2017-03-23 12:05:13 +10:00
clk ARM: SoC: late DT updates for v4.11 2017-03-03 16:15:48 -08:00
clocksource Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-17 13:13:35 -07:00
connector
cpufreq Merge branches 'pm-cpufreq-fixes' and 'intel_pstate-fixes' 2017-03-18 00:45:09 +01:00
cpuidle Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2017-03-15 09:26:04 -07:00
dax device-dax: fix debug output typo 2017-03-10 19:56:56 -08:00
dca
devfreq scripts/spelling.txt: add "followings" pattern and fix typo instances 2017-02-27 18:43:47 -08:00
dio
dma sched/headers: Prepare to move the get_task_struct()/put_task_struct() and related APIs from <linux/sched.h> to <linux/sched/task.h> 2017-03-02 08:42:40 +01:00
dma-buf dma-fence: add dma_fence_match_context helper 2017-03-17 23:51:36 +05:30
edac Merge branch 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-02-20 12:47:44 -08:00
eisa
extcon scripts/spelling.txt: add "swithc" pattern and fix typo instances 2017-02-27 18:43:46 -08:00
firewire Merge branch 'idr-4.11' of git://git.infradead.org/users/willy/linux-dax 2017-02-28 20:29:41 -08:00
firmware Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-07 14:25:48 -08:00
fmc
fpga fpga zynq: Use the scatterlist interface 2017-02-10 15:20:44 +01:00
fsi drivers/fsi: add driver to device matches 2017-02-10 15:19:48 +01:00
gpio This is the bulk of GPIO changes for the v4.11 cycle 2017-02-23 08:46:04 -08:00
gpu drm: Fix locking gotcha in page_flip ioctl 2017-03-30 17:28:24 -07:00
hid sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
hsi sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
hv scripts/spelling.txt: add "disble(d)" pattern and fix typo instances 2017-03-09 17:01:09 -08:00
hwmon scripts/spelling.txt: add "followings" pattern and fix typo instances 2017-02-27 18:43:47 -08:00
hwspinlock
hwtracing mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf 2017-02-24 17:46:54 -08:00
i2c Linux 4.11-rc3 2017-03-23 12:05:13 +10:00
ide sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
idle Power management turbostat utility updates for v4.11-rc1 2017-03-02 17:41:27 -08:00
iio Staging/IIO driver fixes for 4.11-rc1 2017-03-04 11:26:18 -08:00
infiniband sched/headers: Prepare to move the get_task_struct()/put_task_struct() and related APIs from <linux/sched.h> to <linux/sched/task.h> 2017-03-02 08:42:40 +01:00
input Input: rmi4 - f30: detect INPUT_PROP_BUTTONPAD from the button count 2017-03-01 10:01:56 -08:00
iommu sched/headers: Prepare for new header dependencies before moving code to <linux/sched/mm.h> 2017-03-02 08:42:28 +01:00
ipack
irqchip irqchip/irqdomain updates for 4.11-rc2 2017-03-09 12:06:41 +01:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-03-14 21:31:23 -07:00
leds sched/headers: Prepare for new header dependencies before moving code to <linux/sched/loadavg.h> 2017-03-02 08:42:27 +01:00
lguest sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
lightnvm lightnvm: set default lun range when no luns are specified 2017-02-15 08:27:21 -07:00
macintosh powerpc/pmac: Fix crash in dma-mapping.h with NULL dma_ops 2017-03-10 14:17:23 +11:00
mailbox sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
mcb
md Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md 2017-03-16 11:43:48 -07:00
media Merge branch 'akpm' (patches from Andrew) 2017-03-10 08:34:42 -08:00
memory ARM: SoC driver updates 2017-02-23 15:57:04 -08:00
memstick Merge branch 'for-4.11/next' into for-4.11/linus-merge 2017-02-17 14:08:19 -07:00
message SCSI misc on 20170220 2017-02-21 11:51:42 -08:00
mfd staging/iio driver patches for 4.11-rc1 2017-02-22 12:14:01 -08:00
misc mm: convert generic code to 5-level paging 2017-03-09 11:48:47 -08:00
mmc sched/headers: Prepare for new header dependencies before moving code to <uapi/linux/sched/types.h> 2017-03-02 08:42:27 +01:00
mtd scripts/spelling.txt: add "disble(d)" pattern and fix typo instances 2017-03-09 17:01:09 -08:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-03-14 21:31:23 -07:00
nfc scripts/spelling.txt: add "omited" pattern and fix typo instances 2017-02-27 18:43:47 -08:00
ntb ntb: ntb_hw_intel: link_poll isn't clearing the pending status properly 2017-02-16 23:11:26 -05:00
nubus
nvdimm nfit, libnvdimm: fix interleave set cookie calculation 2017-03-01 00:49:42 -08:00
nvme Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2017-03-03 10:53:35 -08:00
nvmem
of Pointer for Markus's image conversion work. 2017-03-14 15:07:33 +01:00
oprofile sched/headers: Prepare to move the get_task_struct()/put_task_struct() and related APIs from <linux/sched.h> to <linux/sched/task.h> 2017-03-02 08:42:40 +01:00
parisc Merge branch 'parisc-4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux 2017-03-03 16:20:06 -08:00
parport sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
pci PCI: Recognize Thunderbolt devices 2017-03-30 22:42:30 +02:00
pcmcia
perf sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h> 2017-03-02 08:42:27 +01:00
phy pci-v4.11-changes 2017-02-23 11:53:22 -08:00
pinctrl pinctrl: uniphier: change pin names of aio/xirq for LD11 2017-03-06 14:38:05 +01:00
platform platform-drivers-x86 for v4.11-2 2017-03-13 13:23:43 -07:00
pnp
power scripts/spelling.txt: add "intialization" pattern and fix typo instances 2017-02-27 18:43:47 -08:00
powercap
pps
ps3 sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
ptp 4.11 is going to be a relatively large release for KVM, with a little over 2017-02-22 18:22:53 -08:00
pwm pwm: Changes for v4.11-rc1 2017-03-01 09:46:02 -08:00
rapidio rapidio: use get_user_pages_unlocked() 2017-02-27 18:43:45 -08:00
ras
regulator regulator: Updates for v4.11 2017-02-20 17:23:57 -08:00
remoteproc virtio, vhost: optimizations, fixes 2017-03-02 13:53:13 -08:00
reset ARM: SoC driver updates 2017-02-23 15:57:04 -08:00
rpmsg virtio, vhost: optimizations, fixes 2017-03-02 13:53:13 -08:00
rtc sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
s390 Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
sbus
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2017-03-19 18:06:31 -07:00
sfi
sh
sn
soc sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
spi sched/headers: Prepare for new header dependencies before moving code to <uapi/linux/sched/types.h> 2017-03-02 08:42:27 +01:00
spmi
ssb
staging Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-03-14 21:31:23 -07:00
target tcmu: Convert cmd_time_out into backend device attribute 2017-03-18 16:32:30 -07:00
tc
thermal sched/headers: Prepare for new header dependencies before moving code to <uapi/linux/sched/types.h> 2017-03-02 08:42:27 +01:00
thunderbolt
tty serial: samsung: Continue to work if DMA request fails 2017-03-07 19:58:37 +01:00
uio sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
usb USB fixes for 4.11-rc2 2017-03-11 00:08:39 -08:00
uwb
vfio sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
vhost Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
video sched/headers: Remove the <linux/mm_types.h> dependency from <linux/sched.h> 2017-03-03 01:45:16 +01:00
virt
virtio Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
vlynq
vme
w1 sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
watchdog watchdog: retu: restore MFD dependency 2017-03-01 06:15:10 -08:00
xen drivers, xen: convert grant_map.users from atomic_t to refcount_t 2017-03-13 12:45:18 -04:00
zorro
Kconfig drivers/fsi: Add empty fsi bus definitions 2017-02-10 15:19:48 +01:00
Makefile pci-v4.11-changes 2017-02-23 11:53:22 -08:00