linux/Documentation
Linus Torvalds 510965dd4a This is the bulk of GPIO changes for the v4.1 development
cycle:
 
 - A new GPIO hogging mechanism has been added. This can
   be used on boards that want to drive some GPIO line high,
   low, or set it as input on boot and then never touch it
   again. For some embedded systems this is bliss and
   simplifies things to a great extent.
 
 - Some API cleanup and closure: gpiod_get_array() and
   gpiod_put_array() has been added to get and put GPIOs
   in bulk as was possible with the non-descriptor API.
 
 - Encapsulate cross-calls to the pin control subsystem in
   <linux/gpio/driver.h>. Now this should be the only header
   any GPIO driver needs to include or something is wrong.
   Cleanups restricting drivers to this include are welcomed
   if tested.
 
 - Sort the GPIO Kconfig and split it into submenus, as
   it was becoming and unstructured, illogical and
   unnavigatable mess. I hope this is easier to follow.
   Menus that require a certain subsystem like I2C can
   now be hidden nicely for example, still working on
   others.
 
 - New drivers:
 
     - New driver for the Altera Soft GPIO.
 
     - The F7188x driver now handles the F71869 and
       F71869A variants.
 
     - The MIPS Loongson driver has been moved to
       drivers/gpio for consolidation and cleanup.
 
 - Cleanups:
 
    - The MAX732x is converted to use the GPIOLIB_IRQCHIP
      infrastructure.
 
    - The PCF857x is converted to use the GPIOLIB_IRQCHIP
      infrastructure.
 
    - Radical cleanup of the OMAP driver.
 
 - Misc:
 
    - Enable the DWAPB GPIO for all architectures. This is
      a "hard IP" block from Synopsys which has started to
      turn up in so diverse architectures as X86 Quark, ARC
      and a slew of ARM systems. So even though it's not an
      expander, it's generic enough to be available for all.
 
    - We add a mock GPIO on Crystalcove PMIC after a long
      discussion with Daniel Vetter et al, tracing back to
      the shootout at the kernel summit where DRM drivers
      and sub-componentization was discussed. In this case
      a mock GPIO is assumed to be the best compromise
      gaining some reuse of infrastructure without making
      DRM drivers overly complex at the same time. Let's
      see.
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Merge tag 'gpio-v4.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO updates from Linus Walleij:
 "This is the bulk of GPIO changes for the v4.1 development cycle:

   - A new GPIO hogging mechanism has been added.  This can be used on
     boards that want to drive some GPIO line high, low, or set it as
     input on boot and then never touch it again.  For some embedded
     systems this is bliss and simplifies things to a great extent.

   - Some API cleanup and closure: gpiod_get_array() and
     gpiod_put_array() has been added to get and put GPIOs in bulk as
     was possible with the non-descriptor API.

   - Encapsulate cross-calls to the pin control subsystem in
     <linux/gpio/driver.h>.  Now this should be the only header any GPIO
     driver needs to include or something is wrong.  Cleanups
     restricting drivers to this include are welcomed if tested.

   - Sort the GPIO Kconfig and split it into submenus, as it was
     becoming and unstructured, illogical and unnavigatable mess.  I
     hope this is easier to follow.  Menus that require a certain
     subsystem like I2C can now be hidden nicely for example, still
     working on others.

   - New drivers:

       - New driver for the Altera Soft GPIO.

       - The F7188x driver now handles the F71869 and F71869A variants.

       - The MIPS Loongson driver has been moved to drivers/gpio for
         consolidation and cleanup.

   - Cleanups:

       - The MAX732x is converted to use the GPIOLIB_IRQCHIP
         infrastructure.

       - The PCF857x is converted to use the GPIOLIB_IRQCHIP
         infrastructure.

       - Radical cleanup of the OMAP driver.

   - Misc:

       - Enable the DWAPB GPIO for all architectures.  This is a "hard
         IP" block from Synopsys which has started to turn up in so
         diverse architectures as X86 Quark, ARC and a slew of ARM
         systems.  So even though it's not an expander, it's generic
         enough to be available for all.

       - We add a mock GPIO on Crystalcove PMIC after a long discussion
         with Daniel Vetter et al, tracing back to the shootout at the
         kernel summit where DRM drivers and sub-componentization was
         discussed.  In this case a mock GPIO is assumed to be the best
         compromise gaining some reuse of infrastructure without making
         DRM drivers overly complex at the same time.  Let's see"

* tag 'gpio-v4.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (62 commits)
  Revert "gpio: sch: use uapi/linux/pci_ids.h directly"
  gpio: dwapb: remove dependencies
  gpio: dwapb: enable for ARC
  gpio: removing kfree remove functionality
  gpio: mvebu: Fix mask/unmask managment per irq chip type
  gpio: split GPIO drivers in submenus
  gpio: move MFD GPIO drivers under their own comment
  gpio: move BCM Kona Kconfig option
  gpio: arrange SPI Kconfig symbols alphabetically
  gpio: arrange PCI GPIO controllers alphabetically
  gpio: arrange I2C Kconfig symbols alphabetically
  gpio: arrange Kconfig symbols alphabetically
  gpio: ich: Implement get_direction function
  gpio: use (!foo) instead of (foo == NULL)
  gpio: arizona: drop owner assignment from platform_drivers
  gpio: max7300: remove 'ret' variable
  gpio: use devm_kzalloc
  gpio: sch: use uapi/linux/pci_ids.h directly
  gpio: x-gene: fix devm_ioremap_resource() check
  gpio: loongson: Add Loongson-3A/3B GPIO driver support
  ...
2015-04-18 08:22:10 -04:00
..
ABI - Most extensive changes this cycle are the DM core improvements to add 2015-04-18 08:14:18 -04:00
accounting Documentation: use subdir-y to avoid unnecessary built-in.o files 2014-09-26 11:02:55 +02:00
acpi Power management and ACPI updates for v4.1-rc1 2015-04-14 20:21:54 -07:00
aoe
arm ARM: SoC platform changes 2015-02-17 09:27:54 -08:00
arm64 arm64: Emulate SETEND for AArch32 tasks 2015-01-23 17:11:44 +00:00
auxdisplay Documentation: use subdir-y to avoid unnecessary built-in.o files 2014-09-26 11:02:55 +02:00
backlight
blackfin Documentation: fix blackfin gptimers-example build errors 2015-01-28 12:07:58 -07:00
block Merge branch 'for-3.19/core' of git://git.kernel.dk/linux-block 2014-12-13 14:14:23 -08:00
blockdev Merge branch 'for-4.1/drivers' of git://git.kernel.dk/linux-block 2015-04-16 22:05:27 -04:00
bus-devices
cdrom
cgroups Merge branch 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2015-04-13 16:47:11 -07:00
cma cma: debug: document new debugfs interface 2015-04-14 16:49:00 -07:00
connector
console
cpu-freq intel_pstate: Add num_pstates to sysfs 2015-01-30 01:52:17 +01:00
cpuidle
cris
crypto crypto: doc - AEAD / RNG AF_ALG interface 2015-03-09 21:06:18 +11:00
development-process Documentation: remove outdated references to the linux-next wiki 2014-10-28 09:06:11 -04:00
device-mapper dm crypt: update URLs to new cryptsetup project page 2015-04-15 12:10:24 -04:00
devicetree This is the bulk of GPIO changes for the v4.1 development 2015-04-18 08:22:10 -04:00
dmaengine Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2015-02-18 08:49:20 -08:00
DocBook crypto: doc - AEAD / RNG AF_ALG interface 2015-03-09 21:06:18 +11:00
driver-model leds: Introduce devres helper for led_classdev_register 2015-03-09 13:43:41 -07:00
dvb [media] get_dvb_firmware: Update firmware of ITEtech IT9135 2014-09-21 17:03:04 -03:00
early-userspace
EDID
extcon
fault-injection
fb
filesystems Merge branch 'akpm' (patches from Andrew) 2015-04-17 09:04:38 -04:00
firmware_class
fmc
frv
gpio extend documentation for gpiod_set_array() functions 2015-03-09 17:38:49 +01:00
hid HID: sensor: Update document for custom sensor 2015-04-10 22:22:56 +02:00
hwmon hwmon: (it87) Add support for IT8620E 2015-04-05 06:01:00 -07:00
i2c i2c: slave: add documentation for i2c-slave-eeprom 2015-03-27 16:53:39 +01:00
i2o
ia64 virtual: Documentation: simplify and generalize paravirt_ops.txt 2015-02-13 17:15:44 +10:30
ide
infiniband
input Input: alps - document stick behavior for protocol V2 2015-04-05 11:48:35 -07:00
ioctl cxl: Add documentation for userspace APIs 2014-10-08 20:16:19 +11:00
isdn
ja_JP
kbuild Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2015-02-19 10:31:37 -08:00
kdump kernel: add panic_on_warn 2014-12-10 17:41:10 -08:00
ko_KR
laptops Documentation: update .gitignore files 2014-09-26 11:02:59 +02:00
leds Documentation: leds: Add description of LED Flash class extension 2015-03-09 17:18:00 -07:00
locking Documentation changes for 3.20 2015-02-11 13:03:11 -08:00
m68k
memory-devices
metag
mic Documentation: Build mic/mpssd only for x86_64 2014-12-05 11:18:36 -05:00
mips
misc-devices Documentation/misc-devices/mei: Fix indentation of embedded code. 2015-01-29 12:56:20 -07:00
mmc
mn10300
mtd
namespaces
netlabel
networking Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-04-14 15:44:14 -04:00
nfc
nios2 Documentation: Add documentation for Nios2 architecture 2014-12-08 12:56:06 +08:00
parisc
PCI PCI: Clarify policy for vendor IDs in pci.txt 2015-04-09 13:34:02 -05:00
pcmcia Documentation: use subdir-y to avoid unnecessary built-in.o files 2014-09-26 11:02:55 +02:00
phy
platform
power Power management and ACPI updates for v4.1-rc1 2015-04-14 20:21:54 -07:00
powerpc Merge branch 'next-sriov' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc into next 2015-04-14 09:29:23 +10:00
pps
prctl Documentation: Restrict TSC test code to x86 2014-10-28 08:46:27 -04:00
pti
ptp ptp: restore the makefile for building the test program. 2014-10-24 16:07:10 -04:00
rapidio
RCU Merge branches 'doc.2015.01.07a', 'fixes.2015.01.15a', 'preempt.2015.01.06a', 'srcu.2015.01.06a', 'stall.2015.01.16a' and 'torture.2015.01.11a' into HEAD 2015-01-15 23:34:34 -08:00
s390 s390/docs: Remove section about script debugging from Debugging390.txt 2015-01-15 11:11:14 +01:00
scheduler doc: brief user documentation for completion 2015-01-30 11:19:25 -07:00
scsi genirq: Remove the deprecated 'IRQF_DISABLED' request_irq() flag entirely 2015-03-05 20:53:06 +01:00
security Smack: Updates for Smack documentation 2015-03-31 10:35:31 -07:00
serial serial: Fix locking for uart driver set_termios() method 2014-11-05 18:53:54 -08:00
sh
sound ASoC: Updates for v4.1 2015-04-13 14:14:29 +02:00
spi Documentation/spi/spidev_test.c: fix warning 2015-04-17 09:04:12 -04:00
sysctl Doc/sysctl/kernel.txt: document threads-max 2015-04-17 09:04:07 -04:00
target Documentation/target: Update fabric_ops to latest code 2015-01-06 13:46:49 -08:00
thermal Documentation: thermal: document of_cpufreq_cooling_register() 2015-01-06 14:39:17 -04:00
timers documentation: Update NO_HZ_FULL interaction with POSIX timers 2015-02-26 11:57:29 -08:00
tpm
trace Char / Misc patches for 3.20-rc1 2015-02-15 10:48:44 -08:00
usb usb: patches for v4.1 merge window 2015-03-24 22:57:49 +01:00
vDSO vdso: don't require 64-bit math in standalone test 2014-10-25 10:53:44 -04:00
video4linux MODULE_DEVICE_TABLE: fix some callsites 2015-02-13 21:21:40 -08:00
virtual Features and fixes for 4.1 (kvm/next) 2015-04-07 18:10:03 +02:00
vm zsmalloc: zsmalloc documentation 2015-04-15 16:35:21 -07:00
w1
watchdog Documentation: use subdir-y to avoid unnecessary built-in.o files 2014-09-26 11:02:55 +02:00
wimax
x86 x86/mm/KASLR: Propagate KASLR status to kernel proper 2015-04-03 15:26:15 +02:00
xtensa
zh_CN
00-INDEX Update of Documentation/dmaengine/00-INDEX 2014-12-29 15:28:24 -07:00
applying-patches.txt Documentation: change "&" to "and" in Documentation/applying-patches.txt 2014-09-26 11:10:11 +02:00
assoc_array.txt
atomic_ops.txt documentation: Clarify memory-barrier semantics of atomic operations 2015-02-26 11:57:31 -08:00
bad_memory.txt
basic_profiling.txt
bcache.txt
binfmt_misc.txt binfmt_misc: touch up documentation a bit 2014-10-14 02:18:16 +02:00
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt
cachetlb.txt rmap: drop support of non-linear mappings 2015-02-10 14:30:31 -08:00
Changes Documentation: GNU is frequently spelled Gnu 2014-12-29 15:33:17 -07:00
circular-buffers.txt
clk.txt clk: Add rate constraints to clocks 2015-02-02 14:23:42 -08:00
coccinelle.txt
CodeOfConflict Code of Conflict 2015-02-27 11:44:24 -08:00
CodingStyle documentation: update CodingStyle on local variables naming in macros 2015-04-17 09:03:54 -04:00
cpu-hotplug.txt
cpu-load.txt
cputopology.txt
crc32.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
devices.txt
digsig.txt
DMA-API-HOWTO.txt Documentation: correct parameter error for dma_mapping_error 2014-09-26 11:22:29 +02:00
DMA-API.txt
DMA-attributes.txt
dma-buf-sharing.txt
DMA-ISA-LPC.txt
dontdiff
dynamic-debug-howto.txt
edac.txt
efi-stub.txt
eisa.txt
email-clients.txt Documentation/email-clients.txt: add info about Claws Mail 2014-12-02 11:55:29 -05:00
flexible-arrays.txt
futex-requeue-pi.txt doc: Fix misnamed FUTEX_CMP_REQUEUE_PI op constants 2015-01-19 12:05:32 +01:00
gcov.txt
gdb-kernel-debugging.txt scripts/gdb: add basic documentation 2015-02-17 14:34:54 -08:00
highuid.txt
HOWTO Documentation: remove outdated references to the linux-next wiki 2014-10-28 09:06:11 -04:00
hsi.txt
hw_random.txt
hwspinlock.txt
init.txt
initrd.txt
intel_txt.txt
Intel-IOMMU.txt
io_ordering.txt
io-mapping.txt
iostats.txt
IPMI.txt ipmi: Add SMBus interface driver (SSIF) 2014-12-11 15:04:11 -06:00
IRQ-affinity.txt
IRQ-domain.txt IRQCHIP: Update docs regarding irq_domain_add_tree() 2015-04-01 17:21:35 +02:00
IRQ.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kasan.txt kasan: enable instrumentation of global variables 2015-02-13 21:21:42 -08:00
kernel-doc-nano-HOWTO.txt
kernel-docs.txt
kernel-parameters.txt Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-04-17 15:50:54 -04:00
kernel-per-CPU-kthreads.txt documentation: Update per-CPU kthreads documentation 2015-02-26 11:57:30 -08:00
kmemcheck.txt
kmemleak.txt Documentation: Add CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF case 2014-10-24 13:59:03 -04:00
kobject.txt kobject: grammar fix 2014-12-08 09:07:11 -05:00
kprobes.txt Documentation: add description for FTRACE probe status 2015-02-04 16:05:44 -05:00
kref.txt
kselftest.txt kselftest: Move the docs to the Documentation dir 2014-11-24 10:49:54 -07:00
ldm.txt
local_ops.txt percpu: update local_ops.txt to reflect this_cpu operations 2014-12-13 12:42:53 -08:00
lockup-watchdogs.txt
logo.gif
logo.txt
lzo.txt Documentation: lzo: document part of the encoding 2014-09-28 11:08:00 +02:00
magic-number.txt
mailbox.txt Documentation: Fix a typo in mailbox.txt 2014-11-03 11:54:50 -05:00
Makefile Documentation: add makefiles for more targets 2014-09-26 11:02:56 +02:00
ManagementStyle
md.txt
media-framework.txt
memory-barriers.txt documentation: Clarify control-dependency pairing 2015-02-26 11:57:32 -08:00
memory-hotplug.txt memory-hotplug: add sysfs valid_zones attribute 2014-10-09 22:25:52 -04:00
module-signing.txt
mono.txt
nommu-mmap.txt fs: introduce f_op->mmap_capabilities for nommu mmap support 2015-01-20 14:02:58 -07:00
numastat.txt
oops-tracing.txt livepatch: kernel: add TAINT_LIVEPATCH 2014-12-22 15:40:48 +01:00
padata.txt
parport-lowlevel.txt
parport.txt
percpu-rw-semaphore.txt
phy.txt phy: improved lookup method 2014-11-21 19:48:50 +05:30
pi-futex.txt
pinctrl.txt pinctrl: fix example .get_group_pins implementation signature 2015-03-18 02:02:20 +01:00
pnp.txt
preempt-locking.txt
printk-formats.txt lib/vsprintf: add %pC{,n,r} format specifiers for clocks 2015-04-15 16:35:23 -07:00
pwm.txt
ramoops.txt pstore-ram: Allow optional mapping with pgprot_noncached 2014-12-11 13:38:31 -08:00
rbtree.txt
remoteproc.txt
rfkill.txt rfkill: document rfkill module parameters 2015-01-09 23:22:12 +01:00
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt
rtc.txt Documentation, split up rtc.txt into documentation and test file 2015-03-24 22:01:58 -06:00
SAK.txt
SecurityBugs
serial-console.txt
sgi-ioc4.txt
SM501.txt
smsc_ece1099.txt
sparse.txt
stable_api_nonsense.txt
stable_kernel_rules.txt stable_kernel_rules: Add clause about specification of kernel versions to patch. 2015-03-26 23:52:24 +01:00
static-keys.txt
SubmitChecklist
SubmittingDrivers
SubmittingPatches checkpatch, SubmittingPatches: suggest line wrapping commit messages at 75 columns 2015-04-17 09:03:57 -04:00
svga.txt
sysfs-rules.txt Documentation/sysfs-rules.txt: Add device attribute error code documentation 2014-09-19 14:44:51 -07:00
sysrq.txt
this_cpu_ops.txt Docs: this_cpu_ops: remove redundant add forms 2014-09-26 11:03:00 +02:00
unaligned-memory-access.txt
unicode.txt
unshare.txt
vfio.txt
VGA-softcursor.txt
vgaarbiter.txt
video-output.txt
vme_api.txt
volatile-considered-harmful.txt
workqueue.txt
xillybus.txt xillybus: Move out of staging 2014-09-23 23:44:16 -07:00
xz.txt
zorro.txt