Commit Graph

141 Commits

Author SHA1 Message Date
Olof Johansson
e086df92e2 Allwinner sunXi SoCs machine additions for 3.13
Nothing outstanding here, mostly some documentation cleanup, and the split of
 the previous generic machine declaration into three different machines to
 handle the sun4i/sun5i, sun6i and sun7i separately.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQIcBAABAgAGBQJSYWutAAoJEBx+YmzsjxAgrscQAI8HcLtqaCDRktPOdZwtxl2x
 BWb91mVzOeZsIpbzqZFy6ffZR728+a3Hz5WJkNX7gFwwwh//1YW1pU2icw44Ch5g
 2TfECqjZqfGv3cgpHGn4i7qxXWX+M/fxrFNSEjyRfKNFo6lZS9uNYJI9n7CEelbt
 XQIQ489Oxa9jU0ZGztH4F9S+sj0RVm4IHK32SZLq9UA7+GcC5RvQZ4sDup3gikKH
 lj1OqmCWX+A8KH2u5r7wwWNVjxvXrCuTHIMwL0jGsx1iz27nAsDe+blKMcYgEzPX
 6SluNoTwe5c8U4SU/zwdHpWJCIFPSEaT/PjZ0wIGgSpCg3/6sndtsceeB5uG8szQ
 IBWOfvlsj1Xegz6LsY/IgEqzLn5GnEhuSFGEOoaJP31ZOkd0fWekV87ES4Jicz3+
 wpTukRahrzCj57n1Rnpik+M5Nbb/Ef8b3rrgSat6eUwO1OpZJvF6XOk7l1ByQ1AO
 O3IqdofR8XjwMFzZn0zWyzdUujXwM6MI0PkRJSRNX59AtqrIQHuV6de+JJH6knub
 PLe4ZLpQonqP3BH42mcBjS4JcNub8MfpBl6c3w4AJ3uuH3I0dhGN4LP39O4r2d5H
 0VWFhZlbhRHURyo0dCaeZu5utzK/yUPx/6J8eUD6rsJs1WsAPggDYU66IB3ecGr/
 sS47wxl9t0Yuy9/+X2n6
 =2aio
 -----END PGP SIGNATURE-----

Merge tag 'sunxi-core-for-3.13' of https://github.com/mripard/linux into next/soc

From Maxime Ripard:
Allwinner sunXi SoCs machine additions for 3.13

Nothing outstanding here, mostly some documentation cleanup, and the split of
the previous generic machine declaration into three different machines to
handle the sun4i/sun5i, sun6i and sun7i separately.

* tag 'sunxi-core-for-3.13' of https://github.com/mripard/linux:
  Documentation: dt: Remove clock gates IDs list for Allwinner SoCs
  Documentation: dt: Remove interrupt sources list for Allwinner SoCs
  Documentation: sunxi: Update Allwinner SoC documentation
  Documentation: sunxi: Update A13 user manual dead link
  ARM: sunxi: Order Kconfig options alphabetically
  ARM: sunxi: Simplify restart setup code
  ARM: sunxi: Split out the DT machines for sun6i and sun7i

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-10-28 10:19:38 -07:00
Maxime Ripard
65788ab227 Documentation: sunxi: Update Allwinner SoC documentation
Since that document was first submitted, some new SoCs have been
announced/released by Allwinner. Update the documentation to mention
those and the related documents.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2013-10-11 21:24:41 +02:00
Maxime Ripard
ed774fbbee Documentation: sunxi: Update A13 user manual dead link
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2013-10-11 21:24:39 +02:00
Kevin Hilman
d7f5baeedb Documentation: arm/Marvell: clarify Armada SoCs that match 78xx0 pattern
New users of Marvell SoCs will potentially be confused by the MVEBU
SoCs that match the 78xx0 pattern and thus which defconfig and mach-*
directory to be looking at.  Add a bit of clarification to README for
this.

Signed-off-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-10-08 17:27:59 +00:00
Linus Torvalds
2e515bf096 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree from Jiri Kosina:
 "The usual trivial updates all over the tree -- mostly typo fixes and
  documentation updates"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (52 commits)
  doc: Documentation/cputopology.txt fix typo
  treewide: Convert retrun typos to return
  Fix comment typo for init_cma_reserved_pageblock
  Documentation/trace: Correcting and extending tracepoint documentation
  mm/hotplug: fix a typo in Documentation/memory-hotplug.txt
  power: Documentation: Update s2ram link
  doc: fix a typo in Documentation/00-INDEX
  Documentation/printk-formats.txt: No casts needed for u64/s64
  doc: Fix typo "is is" in Documentations
  treewide: Fix printks with 0x%#
  zram: doc fixes
  Documentation/kmemcheck: update kmemcheck documentation
  doc: documentation/hwspinlock.txt fix typo
  PM / Hibernate: add section for resume options
  doc: filesystems : Fix typo in Documentations/filesystems
  scsi/megaraid fixed several typos in comments
  ppc: init_32: Fix error typo "CONFIG_START_KERNEL"
  treewide: Add __GFP_NOWARN to k.alloc calls with v.alloc fallbacks
  page_isolation: Fix a comment typo in test_pages_isolated()
  doc: fix a typo about irq affinity
  ...
2013-09-06 09:36:28 -07:00
Ard Biesheuvel
2afd0a0524 ARM: 7825/1: document the use of NEON in kernel mode
Add a file to Documentation/arm explaining how kernel mode NEON
is supposed to be used.

Reviewed-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-08-25 17:09:48 +01:00
Ian Campbell
83d26d1113 ARM: 7824/1: update advice on kernel, initramfs and FDT load address.
- Recommend that the kernel be placed under 128MiB, this is required if
    CONFIG_AUTO_ZRELADDR=y and good (or at least not bad) advice even if
    CONFIG_AUTO_ZRELADDR=n.
  - Recommend that a zImage kernel be placed above 32MiB, this avoids the need
    to relocate prior to decompression, which can speed up boot.
  - Add basic info on the requirements when loading a raw (non-zImage) kernel
    which are stricter than the zImage requirements.
  - Recommend that the DTB be placed after the 128MiB boundary, avoiding any
    potential conflict with the kernel decompressor, and within the lowmem
    region.  In practice it could follow the kernel loaded after 32MiB,
    assuming the kernel decompesses to less than 32MiB, but the 128MiB
    recommendation is simple and unambiguous.
  - Add similar recommendation regarding initramfs.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Dave Martin <dave.martin@linaro.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Roy Franz <roy.franz@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-08-25 17:09:47 +01:00
Masanari Iida
c9f3f2d8b3 doc: Fix typo in doucmentations
Correct typo (double words) in documentations.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-07-25 12:34:15 +02:00
Linus Torvalds
80cc38b163 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree updates from Jiri Kosina:
 "The usual stuff from trivial tree"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits)
  treewide: relase -> release
  Documentation/cgroups/memory.txt: fix stat file documentation
  sysctl/net.txt: delete reference to obsolete 2.4.x kernel
  spinlock_api_smp.h: fix preprocessor comments
  treewide: Fix typo in printk
  doc: device tree: clarify stuff in usage-model.txt.
  open firmware: "/aliasas" -> "/aliases"
  md: bcache: Fixed a typo with the word 'arithmetic'
  irq/generic-chip: fix a few kernel-doc entries
  frv: Convert use of typedef ctl_table to struct ctl_table
  sgi: xpc: Convert use of typedef ctl_table to struct ctl_table
  doc: clk: Fix incorrect wording
  Documentation/arm/IXP4xx fix a typo
  Documentation/networking/ieee802154 fix a typo
  Documentation/DocBook/media/v4l fix a typo
  Documentation/video4linux/si476x.txt fix a typo
  Documentation/virtual/kvm/api.txt fix a typo
  Documentation/early-userspace/README fix a typo
  Documentation/video4linux/soc-camera.txt fix a typo
  lguest: fix CONFIG_PAE -> CONFIG_x86_PAE in comment
  ...
2013-07-04 11:40:58 -07:00
Linus Torvalds
42daabf62b ARM SoC late changes
These are changes that arrived a little late before the merge
 window or that have multiple dependencies on previous branches
 so they did not fit into one of the earlier ones. There
 are 10 branches merged here, a total of 39 non-merge commits.
 Contents are a mixed bag for the above reasons:
 
 * Two new SoC platforms: ST microelectronics stixxxx and
   the TI 'Nspire' graphing calculator. These should have
   been in the 'soc' branch but were a little late
 * Support for the Exynos 5420 variant in mach-exynos,
   which is based on the other exynos branches to avoid
   conflicts.
 * Various small changes for sh-mobile, ux500 and davinci
 * Common clk support for MSM
 
 Conflicts:
 * In Kconfig.debug, various additions trivially conflict,
   the list should be kept in alphabetical order when
   resolving.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQIVAwUAUdLnl2CrR//JCVInAQIrKhAAwvtsGNe6j9nDuLEitWtQAmhHYZQyUJ8k
 o9j/1j1CqhE8C0bLRud8D4m1GxfxbGeRm2d0HoNbxda3FmntUufqBDi6neMiQiLO
 VltC5rOYL8Mday0Asc3SBfjBj8SZC2bypicKy5zUfzsObCBt343g1WvYffMDNmwH
 FveOQK6q2BKmO67cazc9tk5xmxjVwP/LB8r5mQtiXmMguw0R+ZIDDIP6xaURFkxX
 SAElleD2wtvpVHP1d6AKHpXN99u3xV3uoJjKljECEXdBzW/ZX8m7FG2tKY5xy368
 ta0Nhh2MSRnBhUYOH9uah4PQWYEsbZ+M/W+3J9tKRu6q9D/c/AAxILyXUY2tcHNC
 o1UwcUn1druirx3X1AW8HYAGNwW7BD3HANzIiUkQZG7ByfM4qCtUEo2SAFNIGBoR
 v1FMLhMPgMWotZnKrDQQd0anxkKIOFaSMRVgpQLW2jQt/B7sHLmEH2yDffkbSD76
 PQDThnW/dfm9dgeK+X4fPrveIMKbjQlbFz0okN+LPsUf8e1045HBgCi2A0lTIGWM
 kVVgXHKKXi8G8HBa4VyDlORVHXk1bJEheF+zlDvdk4fHkcf+H/OfvFG2O9TdIdpb
 ITXRyyteaRM4YIZpnJbzeeZDZXT89c2ah7xq36iM+L1ScidyntPquViXeasSc8r6
 pKu9ZDc0Mow=
 =cRu2
 -----END PGP SIGNATURE-----

Merge tag 'late-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC late changes from Arnd Bergmann:
 "These are changes that arrived a little late before the merge window
  or that have multiple dependencies on previous branches so they did
  not fit into one of the earlier ones.  There are 10 branches merged
  here, a total of 39 non-merge commits.  Contents are a mixed bag for
  the above reasons:

   * Two new SoC platforms: ST microelectronics stixxxx and the TI
     'Nspire' graphing calculator.  These should have been in the 'soc'
     branch but were a little late
   * Support for the Exynos 5420 variant in mach-exynos, which is based
     on the other exynos branches to avoid conflicts.
   * Various small changes for sh-mobile, ux500 and davinci
   * Common clk support for MSM"

* tag 'late-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (39 commits)
  ARM: ux500: bail out on alien cpus
  ARM: davinci: da850: adopt to pinctrl-single change for configuring multiple pins
  serial: sh-sci: Initialise variables before access in sci_set_termios()
  ARM: stih41x: Add B2020 board support
  ARM: stih41x: Add B2000 board support
  ARM: sti: Add DEBUG_LL console support
  ARM: sti: Add STiH416 SOC support
  ARM: sti: Add STiH415 SOC support
  ARM: msm: Migrate to common clock framework
  ARM: msm: Make proc_comm clock control into a platform driver
  ARM: msm: Prepare clk_get() users in mach-msm for clock-pcom driver
  ARM: msm: Remove clock-7x30.h include file
  ARM: msm: Remove custom clk_set_{max,min}_rate() API
  ARM: msm: Remove custom clk_set_flags() API
  msm: iommu: Use clk_set_rate() instead of clk_set_min_rate()
  msm: iommu: Convert to clk_prepare/unprepare
  msm_sdcc: Convert to clk_prepare/unprepare
  usb: otg: msm: Convert to clk_prepare/unprepare
  msm_serial: Use devm_clk_get() and properly return errors
  msm_serial: Convert to clk_prepare/unprepare
  ...
2013-07-02 14:42:51 -07:00
Srinivas Kandagatla
15969b4577 ARM: sti: Add STiH416 SOC support
The STiH416 is advanced HD AVC processor with 3D graphics acceleration
and 1.2-GHz ARM Cortex-A9 SMP CPU.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
CC: Stephen Gallimore <stephen.gallimore@st.com>
CC: Stuart Menefy <stuart.menefy@st.com>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Linus Walleij <linus.walleij@linaro.org>

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25 13:26:58 -07:00
Srinivas Kandagatla
65ebcc1158 ARM: sti: Add STiH415 SOC support
The STiH415 is the next generation of HD, AVC set-top box processors for
satellite, cable, terrestrial and IP-STB markets. It is an ARM Cortex-A9
1.0 GHz, dual-core CPU.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
CC: Stephen Gallimore <stephen.gallimore@st.com>
CC: Stuart Menefy <stuart.menefy@st.com>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-25 13:26:47 -07:00
Maxime Ripard
81265dfb1c ARM: sunxi: Add Allwinner A10s machine compatible
The A10s is a SoC member of the Allwinner sun5i family. It is basically
an A13 with an EMAC and an HDMI controller.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2013-06-16 20:49:30 +02:00
Stefan Huber
6d1ee2cef6 Documentation/arm/IXP4xx fix a typo
Corrected the word softare to software.

Signed-off-by: Stefan Huber <steffhip@googlemail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-06-05 16:24:59 +02:00
Maxime Ripard
af65d4592d ARM: sunxi: Update datasheet documentation
We have access to more documentation now, especially the user manuals,
so add the links to them, and do so minor comestic changes while we're
at it.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2013-05-29 09:39:11 +02:00
Linus Torvalds
e3d98847de ARM: platform specific firmware interfaces for 3.10
Two platforms, bcm and exynos have their own firmware interfaces using
 the "secure monitor call", this adds support for those.
 
 We had originally planned to have a third set of patches in here, which
 would extend support for the existing generic "psci" call that is used
 on multiple platforms as well as Xen and KVM guests, but that ended up
 getting dropped because the patches were not ready in time.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJRhKXyAAoJEIwa5zzehBx3hVQP/1dOFA/LDDKAV918vutKlCtC
 Rptv8WOjMA/r5vlbTKmUHi3tMDDXdDH6CaWH5Fd4pDAnWqWQ8lCB0lSsOY0sKo7c
 SPujwUV6i5LyF2AM+gqTOUrK/6nZNuDYJL9xVjQTOMMNFnTckI4DsgrWAFsv07hh
 N8kh5iR2fD13tg3c/xmuqQ0JECyot1xZowif3dPi/QywsPlxUAua86XI3rWujN8w
 VSARDdpDj6l/6VHYjqiBaGG3sPvzG/dcsN03lTjI5dah4MNtKU4U4Qy7M83ebRXd
 4+gKqy1T0H+lfAODtZqvnkJdJHhZ73f2dUiZj0eWQg9RxNJoLx/tQKmr9fUp4ypP
 fKv0/z5aFEymAPa0FqUvU+zG57WUBjyOrEUie5XoPq4k+Z0xWHmJ8YeDRaqhBC2j
 YcHuSFAhSimqw8Lrc720qvovLvsy4gU8Y6HVIPek0v/D7svvB6smhry2P3XPjXbM
 nEldmqljONMOXJFfgav5Jp6r41IGJOBzwlPlqmNT7+QYo9BLxPVrnroKVUhvx4da
 gjx0Uo8PJZC8wH2WUiP8v/X6yYk7ZzdYgY0oJseeW8TqT8RxkpIScgwRKeufJW0m
 WHcYoJWrFRPv4iHUNBaFfDLk86NaDVFhjJaUKWGbHLJPG/wGEsT6xoMkl7oI0uH5
 bI8xCHEsSqz8GiRW+j22
 =68m5
 -----END PGP SIGNATURE-----

Merge tag 'firmware-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM platform specific firmware interfaces from Olof Johansson:
 "Two platforms, bcm and exynos have their own firmware interfaces using
  the "secure monitor call", this adds support for those.

  We had originally planned to have a third set of patches in here,
  which would extend support for the existing generic "psci" call that
  is used on multiple platforms as well as Xen and KVM guests, but that
  ended up getting dropped because the patches were not ready in time."

* tag 'firmware-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: bcm: mark bcm_kona_smc_init as __init
  ARM: bcm281xx: Add DT support for SMC handler
  ARM: bcm281xx: Add L2 cache enable code
  ARM: EXYNOS: Add secure firmware support to secondary CPU bring-up
  ARM: EXYNOS: Add IO mapping for non-secure SYSRAM.
  ARM: EXYNOS: Add support for Exynos secure firmware
  ARM: EXYNOS: Add support for secure monitor calls
  ARM: Add interface for registering and calling firmware-specific operations
2013-05-04 12:33:36 -07:00
Linus Torvalds
8546dc1d4b Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM updates from Russell King:
 "The major items included in here are:

   - MCPM, multi-cluster power management, part of the infrastructure
     required for ARMs big.LITTLE support.

   - A rework of the ARM KVM code to allow re-use by ARM64.

   - Error handling cleanups of the IS_ERR_OR_NULL() madness and fixes
     of that stuff for arch/arm

   - Preparatory patches for Cortex-M3 support from Uwe Kleine-König.

  There is also a set of three patches in here from Hugh/Catalin to
  address freeing of inappropriate page tables on LPAE.  You already
  have these from akpm, but they were already part of my tree at the
  time he sent them, so unfortunately they'll end up with duplicate
  commits"

* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (77 commits)
  ARM: EXYNOS: remove unnecessary use of IS_ERR_VALUE()
  ARM: IMX: remove unnecessary use of IS_ERR_VALUE()
  ARM: OMAP: use consistent error checking
  ARM: cleanup: OMAP hwmod error checking
  ARM: 7709/1: mcpm: Add explicit AFLAGS to support v6/v7 multiplatform kernels
  ARM: 7700/2: Make cpu_init() notrace
  ARM: 7702/1: Set the page table freeing ceiling to TASK_SIZE
  ARM: 7701/1: mm: Allow arch code to control the user page table ceiling
  ARM: 7703/1: Disable preemption in broadcast_tlb*_a15_erratum()
  ARM: mcpm: provide an interface to set the SMP ops at run time
  ARM: mcpm: generic SMP secondary bringup and hotplug support
  ARM: mcpm_head.S: vlock-based first man election
  ARM: mcpm: Add baremetal voting mutexes
  ARM: mcpm: introduce helpers for platform coherency exit/setup
  ARM: mcpm: introduce the CPU/cluster power API
  ARM: multi-cluster PM: secondary kernel entry code
  ARM: cacheflush: add synchronization helpers for mixed cache state accesses
  ARM: cpu hotplug: remove majority of cache flushing from platforms
  ARM: smp: flush L1 cache in cpu_die()
  ARM: tegra: remove tegra specific cpu_disable()
  ...
2013-05-03 09:13:19 -07:00
Dave Martin
9762f12d3e ARM: mcpm: Add baremetal voting mutexes
This patch adds a simple low-level voting mutex implementation
to be used to arbitrate during first man selection when no load/store
exclusive instructions are usable.

For want of a better name, these are called "vlocks".  (I was
tempted to call them ballot locks, but "block" is way too confusing
an abbreviation...)

There is no function to wait for the lock to be released, and no
vlock_lock() function since we don't need these at the moment.
These could straightforwardly be added if vlocks get used for other
purposes.

For architectural correctness even Strongly-Ordered memory accesses
require barriers in order to guarantee that multiple CPUs have a
coherent view of the ordering of memory accesses.  Whether or not
this matters depends on hardware implementation details of the
memory system.  Since the purpose of this code is to provide a clean,
generic locking mechanism with no platform-specific dependencies the
barriers should be present to avoid unpleasant surprises on future
platforms.

Note:

  * When taking the lock, we don't care about implicit background
    memory operations and other signalling which may be pending,
    because those are not part of the critical section anyway.

    A DMB is sufficient to ensure correctly observed ordering if
    the explicit memory accesses in vlock_trylock.

  * No barrier is required after checking the election result,
    because the result is determined by the store to
    VLOCK_OWNER_OFFSET and is already globally observed due to the
    barriers in voting_end.  This means that global agreement on
    the winner is guaranteed, even before the winner is known
    locally.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
2013-04-24 10:37:01 -04:00
Dave Martin
7fe31d28e8 ARM: mcpm: introduce helpers for platform coherency exit/setup
This provides helper methods to coordinate between CPUs coming down
and CPUs going up, as well as documentation on the used algorithms,
so that cluster teardown and setup
operations are not done for a cluster simultaneously.

For use in the power_down() implementation:
  * __mcpm_cpu_going_down(unsigned int cluster, unsigned int cpu)
  * __mcpm_outbound_enter_critical(unsigned int cluster)
  * __mcpm_outbound_leave_critical(unsigned int cluster)
  * __mcpm_cpu_down(unsigned int cluster, unsigned int cpu)

The power_up_setup() helper should do platform-specific setup in
preparation for turning the CPU on, such as invalidating local caches
or entering coherency.  It must be assembler for now, since it must
run before the MMU can be switched on.  It is passed the affinity level
for which initialization should be performed.

Because the mcpm_sync_struct content is looked-up and modified
with the cache enabled or disabled depending on the code path, it is
crucial to always ensure proper cache maintenance to update main memory
right away.  The sync_cache_*() helpers are used to that end.

Also, in order to prevent a cached writer from interfering with an
adjacent non-cached writer, we ensure each state variable is located to
a separate cache line.

Thanks to Nicolas Pitre and Achin Gupta for the help with this
patch.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Reviewed-by: Will Deacon <will.deacon@arm.com>
2013-04-24 10:37:00 -04:00
Tomasz Figa
7366b92a77 ARM: Add interface for registering and calling firmware-specific operations
Some boards are running with secure firmware running in TrustZone secure
world, which changes the way some things have to be initialized.

This patch adds an interface for platforms to specify available firmware
operations and call them.

A wrapper macro, call_firmware_op(), checks if the operation is provided
and calls it if so, otherwise returns -ENOSYS to allow fallback to
legacy operation..

By default no operations are provided.

Example of use:

In code using firmware ops:

  __raw_writel(virt_to_phys(exynos4_secondary_startup),
               CPU1_BOOT_REG);

  /* Call Exynos specific smc call */
  if (call_firmware_op(cpu_boot, cpu) == -ENOSYS)
          cpu_boot_legacy(...); /* Try legacy way */

  gic_raise_softirq(cpumask_of(cpu), 1);

In board-/platform-specific code:

  static int platformX_do_idle(void)
  {
          /* tell platformX firmware to enter idle */
          return 0;
  }

  static int platformX_cpu_boot(int i)
  {
          /* tell platformX firmware to boot CPU i */
          return 0;
  }

  static const struct firmware_ops platformX_firmware_ops = {
          .do_idle      = exynos_do_idle,
          .cpu_boot     = exynos_cpu_boot,
          /* other operations not available on platformX */
  };

  static void __init board_init_early(void)
  {
          register_firmware_ops(&platformX_firmware_ops);
  }

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-04-09 01:52:06 +09:00
Emilio López
8eb896ab7a arm: sunxi: Add useful information about sunxi clocks
This patch contains useful bits of information about the sunxi clocks
that may help and/or be interesting for current and future developers.

Signed-off-by: Emilio López <emilio@elopez.com.ar>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-03-27 08:35:34 -07:00
Linus Torvalds
2b8318881d fbdev changes for 3.8:
OMAPDSS changes, including:
 - use dynanic debug prints
 - OMAP platform dependency removals
 - Creation of compat-layer, helping us to improve omapdrm
 - Misc cleanups, aiming to make omadss more in line with the upcoming common
   display framework
 
 Exynos DP changes for the 3.8 merge window:
 - Device Tree support for Samsung Exynos DP
 - SW Link training is cleaned up.
 - HPD interrupt is supported.
 
 Samsung Framebuffer changes for the 3.8 merge window:
 - The bit definitions of header file are updated.
 - Some minor typos are fixed.
 - Some minor bugs of s3c_fb_check_var() are fixed.
 
 FB related changes for SH Mobile, Freescale DIU
 
 Add support for the Solomon SSD1307 OLED Controller
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJQyvniAAoJEPo9qoy8lh71IqkQAK9LkVjVk6UQRT2/b39hPF6i
 PKPRNYxpLxX5u98hiqQfweukGkuC/cmsAJOh5UwX1lFg0TNua8CEYg0iuHgUtLWE
 gi+HNUhHfGx1+a9yQpTKsiheq7r88IjpghFGahnFhpE4kDzhIROom7B39x8bx9gs
 1vnCptmcIq0IlMlmjIktTHw8R36Fd/8xDVEhEtDccxT9AJSePnKBY8SBuRjiyJfP
 QvXnd131kmHdshQbSVetsEwI1a9NJ9Z6MMRiQK3vtDiBJ7QHUw8wD/+kdR68gQxZ
 NqTC/s478dvx/bR5CIXHrXxQZGfOCJ0GFzT1rlcRMxECcF0dQYNr3Hid3Zas+mPZ
 hABpEJE7nV7LoDGhW3oIWPt6MZVFED/HE0F5QrG3/PWYs5UpTwkI9UTkB8Bx6LcA
 H9ypHzFaOT1SK2/jln9pAfYgo/ITCRf08gcxBvGZUPcybrQy+kbVPdYgDn09cDhR
 u6ax3k/PMF/6JRdpVRNxLaoEHw/G6vtNjoeRJivZzuIOmGDfGwADGcEnrcZEM3NM
 muOjk8TfTJgK+gzWleOfr9CQGiWWp1Tht9vF6TSApq4SEqmOK81EZpucrMXY0t6r
 9+JmFzS1/+75NeY2YjgHCuqRaqVSMiyyOp1eYV9JIY14rKINbj77OHX8xaMm+Leg
 ZU4tirie/oEALaIJUann
 =KVPX
 -----END PGP SIGNATURE-----

Merge tag 'fbdev-for-3.8' of git://gitorious.org/linux-omap-dss2/linux

Pull fbdev changes from Tomi Valkeinen:
 "OMAPDSS changes, including:
   - use dynanic debug prints
   - OMAP platform dependency removals
   - Creation of compat-layer, helping us to improve omapdrm
   - Misc cleanups, aiming to make omadss more in line with the upcoming
     common display framework

  Exynos DP changes for the 3.8 merge window:
   - Device Tree support for Samsung Exynos DP
   - SW Link training is cleaned up.
   - HPD interrupt is supported.

  Samsung Framebuffer changes for the 3.8 merge window:
   - The bit definitions of header file are updated.
   - Some minor typos are fixed.
   - Some minor bugs of s3c_fb_check_var() are fixed.

  FB related changes for SH Mobile, Freescale DIU

  Add support for the Solomon SSD1307 OLED Controller"

* tag 'fbdev-for-3.8' of git://gitorious.org/linux-omap-dss2/linux: (191 commits)
  OMAPDSS: fix TV-out issue with DSI PLL
  Revert "OMAPFB: simplify locking"
  OMAPFB: remove silly loop in fb2display()
  OMAPFB: fix error handling in omapfb_find_best_mode()
  OMAPFB: use devm_kzalloc to allocate omapfb2_device
  OMAPDSS: DISPC: remove dispc fck uses
  OMAPDSS: DISPC: get dss clock rate from dss driver
  drivers/video/console/softcursor.c: remove redundant NULL check before kfree()
  drivers/video: add support for the Solomon SSD1307 OLED Controller
  OMAPDSS: use omapdss_compat_init() in other drivers
  OMAPDSS: export dispc functions
  OMAPDSS: export dss_feat functions
  OMAPDSS: export dss_mgr_ops functions
  OMAPDSS: separate compat files in the Makefile
  OMAPDSS: move display sysfs init to compat layer
  OMAPDSS: DPI: use dispc's check_timings
  OMAPDSS: DISPC: add dispc_ovl_check()
  OMAPDSS: move irq handling to dispc-compat
  OMAPDSS: move omap_dispc_wait_for_irq_interruptible_timeout to dispc-compat.c
  OMAPDSS: move blocking mgr enable/disable to compat layer
  ...

Conflicts:
	arch/arm/mach-davinci/devices-da8xx.c
	arch/arm/plat-omap/common.c
	drivers/media/platform/omap/omap_vout.c
2012-12-15 13:03:48 -08:00
Maxime Ripard
3b52634f0b ARM: sunxi: Add basic support for Allwinner A1x SoCs
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Stefan Roese <sr@denx.de>
2012-11-16 21:56:51 +01:00
Tomi Valkeinen
0049fb2603 OMAPFB: use dma_alloc_attrs to allocate memory
Use dma_alloc_attrs to allocate memory instead of omap specific vram
allocator. After this we can remove the omap vram allocator.

There are some downsides to this change:

1) dma_alloc_attrs doesn't let us allocate at certain physical address.
However, this should not be a problem as this feature of vram allocator
is only used when reserving the framebuffer that was initialized by the
bootloader, and we don't currently support "passing" a framebuffer from
the bootloader to the kernel anyway.

2) dma_alloc_attrs, as of now, always ioremaps the allocated area, and
we don't need the ioremap when using VRFB. This patch uses
DMA_ATTR_NO_KERNEL_MAPPING for the allocation, but the flag is currently
not operational.

3) OMAPFB_GET_VRAM_INFO ioctl cannot return real values anymore. I
changed the ioctl to return 64M for all the values, which, I hope, the
applications will interpret as "there's enough vram".

4) "vram" kernel parameter to define how much ram to reserve for video
use no longer works. The user needs to enable CMA and use "cma"
parameter.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-11-13 09:52:24 +02:00
Russell King
a0f0dd57f4 Merge branch 'fixes' into for-linus
Conflicts:
	arch/arm/kernel/smp.c
2012-10-11 10:55:04 +01:00
Linus Torvalds
b9541d94bc ARM: soc: documentation updates
Documentation update for Marvell SoCs, the secret decoder ring to all
 their crazy product names and numbers.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJQaO66AAoJEIwa5zzehBx3ooEP/RPzMhZ8ogbmARYoEaTHB9zH
 IldnKxOLmYYJeKQiAlmhVrNgR5ec9cpgJtHtpJ6MCU7Zuj6WAmaAz+6y+CfUD2PV
 YQnxtrbMZvKCpS93prdyoawgtUebL4cgM8OZByBQZSdKn4AQfJpgLqkYAMjnwaBt
 FjrgFGN6qSUWGvOk/a3D90N3SZ24TPrA8P11BCDFI+NZSo+tdZ01tLFDMwOyY3Nx
 exAi4Bh44b2Hdg01/uBVl5bEikaRpJyXujnMJTvg0gH6fztzJdRB6ITLx7WUjVC2
 q/cTPoh7WXeKPdAttTKn1dCIcWeHTIxH85Xcs+DHFlekhOorjcrTbBSo1qbbqf8F
 1NGFgVKMENFqT8iGP5IlUlGUP5TujFiFSmqiaJioIeorMzFQEkhMco1mJXkfSOYh
 PY4g3A4KpMIZV70cD1lKmNou/xTIwVsEx2M7iYGLOmZI4Z+MhnxlIFVzOLHTbYid
 Km1vJKJFX1tV9IcGg9gXdfzq/mdmeNXY1Fmw0D4CoEgWv7qc5ETAuOW2T8rOtYbK
 MBPy3/5haHrpsLEHEy+N8TLO/WJgjAuMIxSSkg/6dtRSx/yWWRz1hBRtxXH0DDWf
 Fs0xYe6i7UemzpAB/6z2kBDUyFI2fnaoTHmjIQiFYigIhQDZ9nCtwCJrJNDRb+av
 wkxFShtrp7aw4EKQlA9H
 =3vva
 -----END PGP SIGNATURE-----

Merge tag 'docs' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM soc documentation updates from Olof Johansson:
 "Documentation update for Marvell SoCs, the secret decoder ring to all
  their crazy product names and numbers."

* tag 'docs' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm: add documentation describing Marvell families of SoC
2012-10-01 18:56:31 -07:00
Olof Johansson
928487a1ce Merge branch 'samsung/cleanup' into next/cleanup
From Kukjin Kim:

Here, there are cleanup patches for Samsung v3.7 and most of them are
related to cleanup Samsung specific gpio API.

* samsung/cleanup:
  gpio: samsung: Update documentation
  ARM: S3C24XX: Use module_platform_driver macro in mach-osiris-dvs.c
  ARM: S3C24XX: Use module_platform_driver macro in h1940-bluetooth.c
  gpio-samsung: Remove now unused s3c2410_gpio* API
  ARM: S3C24XX: Remove obsolete GPIO API declarations
  ARM: S3C24XX: Convert users of s3c2410_gpio_setpin to gpiolib API
  ARM: EXYNOS: cleanup unused code related to GPS
2012-09-20 16:35:21 -07:00
Dave Martin
6a6d55c38c ARM: virt: Update documentation for hyp mode entry support
Document the possibility of the kernel being entered in HYP mode.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2012-09-19 08:32:51 +01:00
Sylwester Nawrocki
98025c8c75 gpio: samsung: Update documentation
Update Samsung GPIO API documentation to reflect removal of
the s3c24xx specific gpio API. While at it, fix some typos.

The notes on conversion from s3c2410_* functions to the gpiolib
API are left here just in case there is any out of tree code that
still needs to be converted.

Signed-off-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-09-07 06:40:29 +09:00
Arnd Bergmann
19ec6caca2 Merge branch 'cleanup/io-pci' into next/cleanups
From Rob Herring <robherring2@gmail.com>:

This is the 2nd part of mach/io.h removals. This series removes io.h on
platforms with PCI by creating a fixed virtual I/O mapping and a common
__io() macro.

This version has changed a bit to accommodate Tegra converting its PCIe
host to a platform driver. Now the virtual space is only reserved during
early boot before .map_io() is called. The mapping is not created until
calling pci_ioremap_io which can be done at any point after vmalloc is
initialized.

I've gone back to fixed 64K windows for each PCI bus. This allows
removing all the i/o resource setup from the individually platforms and
placing it within the common ARM PCI code.

I've only tested versatilepb under qemu (with the model hacked up to
actually enable i/o space), so any testing is appreciated. iop3xx and
mv78xx0 have some risk of breaking as the PCI bus addresses are moved
to 0 from matching the cpu host bus addesss.

* cleanup/io-pci:
  ARM: iop3xx: use fixed PCI i/o mapping
  ARM: mv78xx0: use fixed pci i/o mapping
  ARM: iop13xx: use fixed PCI i/o mapping
  iop13xx: use more regular PCI I/O space handling
  ARM: orion5x: use fixed PCI i/o mapping
  ARM: kirkwood: use fixed PCI i/o mapping
  ARM: dove: use fixed PCI i/o mapping
  ARM: footbridge: use fixed PCI i/o mapping
  ARM: shark: use fixed PCI i/o mapping
  ARM: integrator: remove trailing whitespace on pci_v3.c
  ARM: integrator: use fixed PCI i/o mapping
  ARM: tegra: use fixed PCI i/o mapping
  ARM: versatile: use fixed PCI i/o mapping
  ARM: move PCI i/o resource setup into common code
  ARM: Add fixed PCI i/o mapping
  i2c: iop3xx: use standard gpiolib functions
  i2c: iop3xx: clean-up trailing whitespace

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-08-13 16:56:29 +02:00
Thomas Petazzoni
9ee99783d7 arm: add documentation describing Marvell families of SoC
As stated in the introduction of the document, the families of ARM
SoCs at Marvell are very complicated, and it is difficult for
newcomers to understand the organization of this SoC family and how it
relates to the Linux kernel support for those hardware platforms.

This document is only at RFC stage for now, it requires reviews and
comments from the Marvell maintainers, the PXA maintainers and the MMP
maintainers. For correctness of course, but also to add any other
information that would be useful. For example, one of the thing that
wasn't clear how to detail in the documentation is how the SoCs relate
to each other in terms of hardware IP blocks. For example, most of the
Kirkwood/Dove/Armada 370-XP/etc. hardware IPs (I2C, SPI, USB, SATA,
etc.) are identical, while the PXA and MMP families are completely
separate.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Gregory Clement <gregory.clement@free-electrons.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Olof Johansson <olof@lixom.net>
Cc: Lior Amsalem <alior@marvell.com>
Cc: Maen Suleiman <maen@marvell.com>
Cc: Tawfik Bayouk <tawfik@marvell.com>
Cc: Shadi Ammouri <shadi@marvell.com>
Cc: Eran Ben-Avi <benavi@marvell.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>

---
Changes from v3:
 * Add Arnd Bergmann Acked-by.

Changes from v2:
 * Mention the plat-<foo> directory that each SoC family is using.
 * Take into account Eric Miao's comments on the PXA/MMP families: add
   PXA21x/PXA25x/PXA26x to the list, mention which processors are
   AP+CP or AP only. Clarify the comments on which SoCs were designed
   by Intel, which ones were designed by Marvell after the acquisition
   of the XScale family.
 * Mention long-term plans regarding the support of those SoC
   families.

Changes from v1:
 * Added publicly available datasheet for the 88F5182 pointed by
   Andrew Lunn.
 * Added publicly available datasheet for the 88F5281 found with
   Google searches
 * Mentionned the Feroceon core name where appropriate, and Sheeva
   where appropriate
 * Fixed the core names for PXA930, PXA935 and PXA955 after comments
   from Arnd Bergmann. Wikipedia is mistakenly suggesting that PXA93x
   are Sheeva-based, and there isn't much information available on the
   web about the 955.
2012-08-11 08:52:32 +02:00
Rob Herring
c279443709 ARM: Add fixed PCI i/o mapping
This adds a fixed virtual mapping for PCI i/o addresses. The mapping is
located at the last 2MB of vmalloc region (0xfee00000-0xff000000). 2MB
is used to align with PMD size, but IO_SPACE_LIMIT is 1MB. The space
is reserved after .map_io and can be mapped at any time later with
pci_ioremap_io. Platforms which need early i/o mapping (e.g. for vga
console) can call pci_map_io_early in their .map_io function.

This has changed completely from the 1st implementation which only
supported creating the static mapping at .map_io.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: Nicolas Pitre <nico@linaro.org>
2012-07-25 09:26:42 -05:00
Linus Torvalds
d14b7a419a Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree from Jiri Kosina:
 "Trivial updates all over the place as usual."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (29 commits)
  Fix typo in include/linux/clk.h .
  pci: hotplug: Fix typo in pci
  iommu: Fix typo in iommu
  video: Fix typo in drivers/video
  Documentation: Add newline at end-of-file to files lacking one
  arm,unicore32: Remove obsolete "select MISC_DEVICES"
  module.c: spelling s/postition/position/g
  cpufreq: Fix typo in cpufreq driver
  trivial: typo in comment in mksysmap
  mach-omap2: Fix typo in debug message and comment
  scsi: aha152x: Fix sparse warning and make printing pointer address more portable.
  Change email address for Steve Glendinning
  Btrfs: fix typo in convert_extent_bit
  via: Remove bogus if check
  netprio_cgroup.c: fix comment typo
  backlight: fix memory leak on obscure error path
  Documentation: asus-laptop.txt references an obsolete Kconfig item
  Documentation: ManagementStyle: fixed typo
  mm/vmscan: cleanup comment error in balance_pgdat
  mm: cleanup on the comments of zone_reclaim_stat
  ...
2012-07-24 13:34:56 -07:00
Jesper Juhl
f9028317b2 Documentation: Add newline at end-of-file to files lacking one
This patch simply adds a newline character at end-of-file to those
files in Documentation/ that currently lack one.

This is done for a few different reasons:

A) It's rather annoying when you do "cat some_file.txt" that your
   prompt/cursor ends up at the end of the last line of output rather
   than on a new line.

B) Some tools that process files line-by-line may get confused by the
   lack of a newline on the last line.

C) The "\ No newline at end of file" line in diffs annoys me for some
   reason.

So, let's just add the missing newline once and for all.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-07-20 23:10:28 +02:00
Viresh Kumar
10d8935f46 Viresh has moved
viresh.kumar@st.com email-id doesn't exist anymore as I have left the
company.  Replace ST's id with viresh.linux@gmail.com.

It also updates .mailmap file to fix address for 'git shortlog'

Signed-off-by: Viresh Kumar <viresh.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-06-20 14:39:36 -07:00
Linus Torvalds
804ce9866d fbdev updates for 3.5
It includes:
 - driver for AUO-K1900 and AUO-K1901 epaper controller
 - large updates for OMAP (e.g. decouple HDMI audio and video)
 - some updates for Exynos and SH Mobile
 - various other small fixes and cleanups
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.12 (GNU/Linux)
 
 iQIcBAABAgAGBQJPyAhmAAoJECSVL5KnPj1PBcoQAIWftuoXo3sk94f5jKcV4Ucx
 MthEc5iEpMVs8xaEruHHNHXWv8ic0x/PfdC2xrpKOEbNXQcNPlb/QE2xWmBRxmT1
 ucDyu10HJ36jKcwcK4ra5IQwOW+GtbTBEoBZT+WNAjxHZtJmxzjQGM4C12zVQpdJ
 +qV2RP93JmsJoVBL9aKVAg1Ko135LLfD8TcKd+z8TmgFnLfSwKhfl7Jtd2xXwyvz
 /hmW3kJUEnD8E5wuj+/g8sKJhQkGalEiITTqG2j2vJyFgxHSqyLSw8BBixrFW1uT
 B9VnZsHF35ccCo+96UZRH4QsGJTx08+rea/qsv8IMSGczyRp5ey1ufjL+CzKiiIN
 FWfex6fY0HHqZGAopQhjag54e914SIbSxdBwWS/iRrtVt3e9d03BzkhYs4rXl4Ey
 CTC5obzWNTbQ6hLEjgWfVKkKcrF56BnRn3zGPgCTKGp2NK3vODdBkt/EmzUFvCWR
 CcyQhh+PvZzEWp3XsdOGossYs/0aP4bO+7XPGJxZaa3+WVcRaZwAG/uZvJXXBfnp
 DGRFy4wPsTTwKYIx4+t/KrsLtNVKioSMS5GEtuM1YEb8pA7mkUIkqwJv1I261h58
 heTr6vWUsviUqHlKALJ+1CdwWGr3CtktCZssGsSUri61nm8CvlSRn2Nr2aJ/L3RN
 AkemC/33RE5X/+lfkdMx
 =tmIU
 -----END PGP SIGNATURE-----

Merge tag 'fbdev-updates-for-3.5' of git://github.com/schandinat/linux-2.6

Pull fbdev updates from Florian Tobias Schandinat:
 - driver for AUO-K1900 and AUO-K1901 epaper controller
 - large updates for OMAP (e.g. decouple HDMI audio and video)
 - some updates for Exynos and SH Mobile
 - various other small fixes and cleanups

* tag 'fbdev-updates-for-3.5' of git://github.com/schandinat/linux-2.6: (130 commits)
  video: bfin_adv7393fb: Fix cleanup code
  video: exynos_dp: reduce delay time when configuring video setting
  video: exynos_dp: move sw reset prioir to enabling sw defined function
  video: exynos_dp: use devm_ functions
  fb: handle NULL pointers in framebuffer release
  OMAPDSS: HDMI: OMAP4: Update IRQ flags for the HPD IRQ request
  OMAPDSS: Apply VENC timings even if panel is disabled
  OMAPDSS: VENC/DISPC: Delay dividing Y resolution for managers connected to VENC
  OMAPDSS: DISPC: Support rotation through TILER
  OMAPDSS: VRFB: remove compiler warnings when CONFIG_BUG=n
  OMAPFB: remove compiler warnings when CONFIG_BUG=n
  OMAPDSS: remove compiler warnings when CONFIG_BUG=n
  OMAPDSS: DISPC: fix usage of dispc_ovl_set_accu_uv
  OMAPDSS: use DSI_FIFO_BUG workaround only for manual update displays
  OMAPDSS: DSI: Support command mode interleaving during video mode blanking periods
  OMAPDSS: DISPC: Update Accumulator configuration for chroma plane
  drivers/video: fsl-diu-fb: don't initialize the THRESHOLDS registers
  video: exynos mipi dsi: support reverse panel type
  video: exynos mipi dsi: Properly interpret the interrupt source flags
  video: exynos mipi dsi: Avoid races in probe()
  ...
2012-06-01 16:57:51 -07:00
Linus Torvalds
30b842889e arm-soc: soc specific changes, part 2
This adds support for the spear13xx platform, which has first been under
 review a long time ago and finally been completed after generic spear
 work has gone into the clock, dt and pinctrl branches.
 
 Also a number of updates for the samsung socs are part of this branch.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJPuezDAAoJEIwa5zzehBx3mooP/iTHd1wRjr2MzKNx4+LpLWgl
 aAXH002xe9Lvu7m75BRvEYWWdRLkyEy9ARM4s2wJCnxU41KmbF65ED1erxK8xaSe
 Ako34vzH+HiUCM2DLzIP6FXyJMM7OcfrdGaY/GxOv+U+MzGUHeu3Q+8b0B/yfBnm
 M3HdDrpyZHKZP9UM3wVQ4/ilDck6vEjYSV2jC11IaHiDMRD2nSpfRKh8H3+gv65S
 gtj9EZpWM8CZg/fCe5lsm3PZnBnqHHW3WVafVnDQfGWeJYqZxMB5QKLU6qf/ntpx
 LU2WjXoGaMmGBVZWynrwNEY6GVp3fZrDV30/q8Htf0/fBpEjUncrLHXtw0DxkpnK
 UuyoRgn7zxOc3kDzohFNIexp1K3q+PNzXklR9hg7OSVji+9bPd2LIOEnpBeghBGj
 WzZIebz5dIdddHlnOl4fRdmxZva2UTuI4bFAJ0izi10Mup7A9lrENnFHG/iVA0rQ
 QlqJZoyeDCvbXQqZCgHirYRPhIxXdQj4G5IivfRxQ7Jgjy76Kt9uDp1egwezF/3a
 2jVtcK42XokVv3Dhsvq9UNFn9GWdVImZ7eh70XLv+q834zAVxSzjWLtlS8I1Q5WO
 7BGIJaICtugNwgYr44Dif6nsoVUmMnSwU5hVw1pApKZspN6EhMhMdp2hw8JPHFUs
 mrZdHi1NAWuYSbObc3UB
 =W2Ri
 -----END PGP SIGNATURE-----

Merge tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc: soc specific changes (part 2) from Olof Johansson:
 "This adds support for the spear13xx platform, which has first been
  under review a long time ago and finally been completed after generic
  spear work has gone into the clock, dt and pinctrl branches.

  Also a number of updates for the samsung socs are part of this branch."

Fix up trivial conflicts in drivers/gpio/gpio-samsung.c that look much
worse than they are: the exonys5 init code was refactored in commit
fd454997d6 ("gpio: samsung: refactor gpiolib init for exynos4/5"), and
then commit f10590c983 ("ARM: EXYNOS: add GPC4 bank instance") added a
new gpio chip define and did tiny updates to the init code.

So the conflict diff looks like hell, but it's actually a fairly simple
change.

* tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (34 commits)
  ARM: exynos: fix building with CONFIG_OF disabled
  ARM: EXYNOS: Add AUXDATA for i2c controllers
  ARM: dts: Update device tree source files for EXYNOS5250
  ARM: EXYNOS: Add device tree support for interrupt combiner
  ARM: EXYNOS: Add irq_domain support for interrupt combiner
  ARM: EXYNOS: Remove a new bus_type instance for EXYNOS5
  ARM: EXYNOS: update irqs for EXYNOS5250 SoC
  ARM: EXYNOS: Add pre-divider and fout mux clocks for bpll and mpll
  ARM: EXYNOS: add GPC4 bank instance
  ARM: EXYNOS: Redefine IRQ_MCT_L0,1 definition
  ARM: EXYNOS: Modify the GIC physical address for static io-mapping
  ARM: EXYNOS: Add watchdog timer clock instance
  pinctrl: SPEAr1310: Fix pin numbers for clcd_high_res
  SPEAr: Update MAINTAINERS and Documentation
  SPEAr13xx: Add defconfig
  SPEAr13xx: Add compilation support
  SPEAr13xx: Add dts and dtsi files
  pinctrl: Add SPEAr13xx pinctrl drivers
  pinctrl: SPEAr: Create macro for declaring GPIO PINS
  SPEAr13xx: Add common clock framework support
  ...
2012-05-26 13:05:55 -07:00
Linus Torvalds
b324c67d48 arm-soc: device tree conversions, part 1
The spear3xx, lpc32xx, shmobile and mmp platforms are joining the game of
 booting using device trees, which is a great step forward for them. at91
 and spear have pretty much completed this process with a huge amount of
 work being put into at91. The other platforms are continuing the process.
 
 We finally start to see the payback on this investment, as new machines
 are getting supported purely by adding a .dts source file that can be
 completely independent of the kernel source.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJPueqRAAoJEIwa5zzehBx3AYkP/ibDGGd0qp1gxnxPYowliXcp
 lrWP8KB2PVcX/041jwpvsWeHzWT+Gm39ryBfz2L3pq/RiuU0jPPwChKgy1iglE8X
 6Rq6sPWkXoDRtyeCuoiaxf1AYuzzAVdzZ0HlPO93tSKgo5eeyZRC5OeebAnrLDCE
 SDi8gZx2mm9+j2Dz46gq8QluyswMMbke3fHHHaHUlcP9fKIvFWvEfsn5j+YQ9bSw
 DrSIqGOzv6Emn7F6yhFQqxmk86KLnaXDVpAWgjVDhzaPv0rcTzloN6D2Ie2e5Vev
 BiRM1zvWn2d9kDk7gpm0t67nguYxsCBl1GNCP1brrncGwt15S10JimYlRhYW+B7u
 qgJqMPko3OnONvyl6e8qgIa2M5N4K/mo1i/jfOwFw3+KfUjXqLeio53Ysr4a6tsM
 Ev3bEsofNJKA0dlMcVzr7ntL087B6Y8mY3oJsVZji5M0KVfx1Jfn+X1W+l/2KD1H
 XWhJrCGa1HlbtSnrD+E91VHGC3M4sEXbbTljMAjHImlU9dGXmmbRMNsqNwkF6qFj
 EO2HnFvdN1oK+zEmeAttR1JHxfMdPFnTfmpUf3AiVSjGO//Wltelqx8ibA2Smn7S
 xXmzqX/HMhIOYCh81FdvzsK4qRYU5QyOsEJB4G0UjBZ66M1A3T/+vPpWuKsw5bUb
 qbnxaaXNsaZjWbbSSrZ4
 =7DYv
 -----END PGP SIGNATURE-----

Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull device tree conversions for arm-soc, part 1, from Olof Johansson:
 "The spear3xx, lpc32xx, shmobile and mmp platforms are joining the game
  of booting using device trees, which is a great step forward for them.
  at91 and spear have pretty much completed this process with a huge
  amount of work being put into at91.  The other platforms are
  continuing the process.

  We finally start to see the payback on this investment, as new
  machines are getting supported purely by adding a .dts source file
  that can be completely independent of the kernel source."

Fix up trivial conflict in arch/arm/Kconfig

* tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (83 commits)
  ARM: at91: Add ADC driver to at91sam9260/at91sam9g20 dtsi files
  arm/dts: omap4-panda: Add LEDs support
  arm/dts: omap4-sdp: Add LEDs support
  arm/dts: twl4030: Add twl4030-gpio node
  OMAP4: devices: Do not create mcpdm device if the dtb has been provided
  OMAP4: devices: Do not create dmic device if the dtb has been provided
  Documentation: update docs for mmp dt
  ARM: dts: refresh dts file for arch mmp
  ARM: mmp: support pxa910 with device tree
  ARM: mmp: support mmp2 with device tree
  gpio: pxa: parse gpio from DTS file
  ARM: mmp: support DT in timer
  ARM: mmp: support DT in irq
  ARM: mmp: append CONFIG_MACH_MMP2_DT
  ARM: mmp: fix build issue on mmp with device tree
  ARM: ux500: Enable PRCMU Timer 4 (clocksource) for Device Tree
  ARM: ux500: Disable SMSC911x platform code registration when DT is enabled
  ARM: ux500: Fork cpu-db8500 platform_devs for sequential DT enablement
  ARM: ux500: Do not attempt to register non-existent i2c devices on Snowball
  ARM: SPEAr3xx: Correct keyboard data passed from DT
  ...
2012-05-22 09:30:52 -07:00
Viresh Kumar
71e09a9e7d SPEAr: Update MAINTAINERS and Documentation
This patchset updates MAINTAINERS files, makes shiraz as second Maintainer for
SPEAr SoCs.

It also updates Documentation mostly for SPEAr13xx.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
2012-05-14 17:34:11 +02:00
Ricardo Neri
9c0b842036 OMAPDSS: Provide an interface for audio support
There exist several display technologies and standards that support audio as
well. Hence, it is relevant to update the DSS device driver to provide an audio
interface that may be used by an audio driver or any other driver interested in
the functionality.

The audio_enable function is intended to prepare the relevant
IP for playback (e.g., enabling an audio FIFO, taking in/out of reset
some IP, enabling companion chips, etc). It is intended to be called before
audio_start. The audio_disable function performs the reverse operation and is
intended to be called after audio_stop.

While a given DSS device driver may support audio, it is possible that for
certain configurations audio is not supported (e.g., an HDMI display using a
VESA video timing). The audio_supported function is intended to query whether
the current configuration of the display supports audio.

The audio_config function is intended to configure all the relevant audio
parameters of the display. In order to make the function independent of any
specific DSS device driver, a struct omap_dss_audio is defined. Its purpose
is to contain all the required parameters for audio configuration. At the
moment, such structure contains pointers to IEC-60958 channel status word and
CEA-861 audio infoframe structures. This should be enough to support HDMI and
DisplayPort, as both are based on CEA-861 and IEC-60958. The omap_dss_audio
structure may be extended in the future if required.

The audio_enable/disable, audio_config and audio_supported functions could be
implemented as functions that may sleep. Hence, they should not be called
while holding a spinlock or a readlock.

The audio_start/audio_stop function is intended to effectively start/stop audio
playback after the configuration has taken place. These functions are designed
to be used in an atomic context. Hence, audio_start should return quickly and be
called only after all the needed resources for audio playback (audio FIFOs,
DMA channels, companion chips, etc) have been enabled to begin data transfers.
audio_stop is designed to only stop the audio transfers. The resources used
for playback are released using audio_disable.

A new enum omap_dss_audio_state is introduced to help the implementations of
the interface to keep track of the audio state. The initial state is _DISABLED;
then, the state transitions to _CONFIGURED, and then, when it is ready to
play audio, to _ENABLED. The state _PLAYING is used when the audio is being
rendered.

Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
2012-05-11 15:13:50 +03:00
Grazvydas Ignotas
0aca3c63e0 OMAPDSS: VENC: allow switching venc output type at runtime
VENC output type (composite/svideo) doesn't have to be fixed by board
wiring, it is possible to also provide composite signal through svideo
luminance connector (software enabled), which is what pandora does.

Having to recompile the kernel for users who have TV connector types
that don't match default board setting is very inconvenient, especially
for users of a consumer device, so add support for switching VENC output
type at runtime over a new sysfs file output_type.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-05-11 14:44:13 +03:00
Viresh Kumar
c5fa4fdcdb ARM: SPEAr3xx: Add device-tree support to SPEAr3xx architecture
This patch adds a generic target for SPEAr3xx machines that can be configured
via the device-tree. Currently the following devices are supported via the
devicetree:

- VIC interrupts
- PL011 UART
- PL061 GPIO
- PL110 CLCD
- SP805 WDT
- Synopsys DW I2C
- Synopsys DW ethernet
- ST FSMC-NAND
- ST SPEAR-SMI
- ST SPEAR-KEYBOARD
- ST SPEAR-RTC
- ARASAN SDHCI-SPEAR
- SPEAR-EHCI
- SPEAR-OHCI

Other peripheral devices will follow in later patches.

This also removes IO_ADDRESS macro and creates 16 MB static mappings instead of
4K for individual peripherals. This is done to have efficient TLB lookup for any
I/O windows that are located closely together. ioremap() on this range will
return this mapping only instead of creating another.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
2012-04-22 22:41:35 +02:00
Rob Herring
c65f2abf54 ARM: remove ixp23xx and ixp2000 platforms
ixp2xxx platforms have had no real changes since ~2006 and the maintainer
has said on irc that they can be removed:

13:05 < nico> do you still care about ixp2000?
13:22 < lennert> not really, no
13:58 < nico> do you think we could remove it from the kernel tree?
14:01 < lennert> go for it, and remove ixp23xx too while you're at it

Removing will help simplify ARM consolidation in general and PCI re-work
specifically.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
2012-04-06 08:26:18 -05:00
Masanari Iida
40e47125e6 Documentation: Fix multiple typo in Documentation
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-03-07 16:08:24 +01:00
Nicolas Pitre
0536bdf33f ARM: move iotable mappings within the vmalloc region
In order to remove the build time variation between different SOCs with
regards to VMALLOC_END, the iotable mappings are now allocated inside
the vmalloc region.  This allows for VMALLOC_END to be identical across
all machines.

The value for VMALLOC_END is now set to 0xff000000 which is right where
the consistent DMA area starts.

To accommodate all static mappings on machines with possible highmem usage,
the default vmalloc area size is changed to 240 MB so that VMALLOC_START
is no higher than 0xf0000000 by default.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Kevin Hilman <khilman@ti.com>
Tested-by: Jamie Iles <jamie@jamieiles.com>
2011-11-26 19:21:26 -05:00
Linus Torvalds
4b478cedcd Merge branch 'next/deletion' of git+ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
* 'next/deletion' of git+ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc:
  ARM: mach-loki: delete
  ARM: mach-s3c2400: delete
  ARM: mach-s3c24a0: delete
2011-07-25 12:43:28 -07:00
Russell King
3ad55155b2 Merge branch 'devel-stable' into for-next
Conflicts:
	arch/arm/kernel/entry-armv.S
2011-07-22 23:09:07 +01:00
Dave Martin
540b573875 ARM: 6999/1: head, zImage: Always Enter the kernel in ARM state
Currently, the documented kernel entry requirements are not
explicit about whether the kernel should be entered in ARM or
Thumb, leading to an ambiguitity about how to enter Thumb-2
kernels.  As a result, the kernel is reliant on the zImage
decompressor to enter the kernel proper in the correct instruction
set state.

This patch changes the boot entry protocol for head.S and Image to
be the same as for zImage: in all cases, the kernel is now entered
in ARM.

Documentation/arm/Booting is updated to reflect this new policy.

A different rule will be needed for Cortex-M class CPUs as and when
support for those lands in mainline, since these CPUs don't support
the ARM instruction set at all: a note is added to the effect that
the kernel must be entered in Thumb on such systems.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-19 12:00:53 +01:00
Nicolas Pitre
632b7cf6c0 ARM: mach-s3c2400: delete
On Tue, 28 Jun 2011, Ben Dooks wrote:

> On Tue, Jun 28, 2011 at 11:22:57PM +0200, Arnd Bergmann wrote:
>
> > On a related note, what about mach-s3c2400? It seems to be even more
> > incomplete.
>
> Probably the same fate awaits that. It is so old that there's little
> incentive to do anything with it.

So out it goes as well.

The PORT_S3C2400 definition in include/linux/serial_core.h is left there
to prevent a reuse of the same number for another port type.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-07-18 10:59:26 -04:00
Simon Horman
090ab3ff8e ARM: 6886/1: mmc, Add zboot from eSD support for SuperH Mobile ARM
This allows a ROM-able zImage to be written to eSD and for SuperH Mobile
ARM to boot directly from the SDHI hardware block.

This is achieved by the MaskROM loading the first portion of the image into
MERAM and then jumping to it.  This portion contains loader code which
copies the entire image to SDRAM and jumps to it. From there the zImage
boot code proceeds as normal, uncompressing the image into its final
location and then jumping to it.

Cc: Paul Mundt <lethal@linux-sh.org>
Acked-by: Magnus Damm <magnus.damm@gmail.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-06-29 10:00:52 +01:00