DECON requires different interrupts depending on mode of work, which
depends on panel it is connected to.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

When vblanks are enabled userspace and/or kernel can expect vblank
interrupt at declared period of time. To generate vblank interrupt
image transfer must be triggered. This patch fixes vblank timeouts
in case of sw-trigger mode.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

The output stage of the mixer uses YCbCr for the internal
computations, which is the reason that some registers take
YCbCr related data as input. In particular this applies
to MXR_BG_COLOR{0,1,2} and MXR_CM_COEFF_{Y,CB,CR}.

Document the formatting of the data which we write to
these registers.

While at it, unify wording of comments in the register header.
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

Convert if-statements to switch statement. Removes
duplicated code.
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

DSIM uses MIC bridge which is between DECON and DSIM, so the driver
should expect bridge node on input side.

Fixes: 86418f90 ("drm: convert drivers to use of_graph_get_remote_node")
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

Hardware require that MIXER(crtc) should be disabled prior to
HDMI(encoder). It was achieved by disabling crtc from encoder disable
callback, bypassing drm core. As a result drm core tried to call vblank
related routines on disabled crtc. The patch fixes it by simplifying
hdmi_disable routine - now it only cancels hotplug worker. Hardware will
be disabled in proper moment during pipe clock disable.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

There is no point in protecting only particular windows during update.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

BIT_IRQS_ENABLED flag duplicates drm_vblank_crtc::refcount, it could be
safely removed.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

Since fixing CMU code (drm/exynos/decon5433: fix CMU programming)
DECON started behave predictable and does not need special care
during DECON_UPDATE writes.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

All Exynos CRTCs are fully configured by .enable callback. The only users
of mode_set_nofb actually did nothing in their callbacks - they immediately
returned because devices were in suspend state - mode_set_nofb is always
called on disabled device.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

Since possible_crtcs are set by Exynos core helper pipe fields have no
raison d'etre. The only place it was used, as a hack, is
fimd_clear_channels, to avoid calling drm_crtc_handle_vblank, but DRM core
has already other protection mechanism (vblank->enabled), so it could be
safely removed.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

All Exynos planes are assigned to exactly one CRTC, it allows to simplify
initialization by moving setting of possible_crtcs to exynos_plane_init.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

The field duplicates drm_dev->mode_config.num_crtc.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

Since crtc index is stored in drm_crtc pipe field became redundant.
The patch beside removing the field simplifies also
exynos_drm_crtc_get_pipe_from_type.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

DECON in Exynos5433 has frame counter, it can be used to implement
get_vblank_counter callback.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

All Exynos CRTC drivers shouldn't fail at referencing vblank events,
alternate path is actually dead code.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

Merge tag 'exynos-drm-fixes-for-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into exynos-drm-next

- Fix a regression to description of exynos_drm_crtc
- Remove preclose hook of Exynos
  . This was a exynos change of the patch series[1] merged already.
- Fix one dt broken issue
- Make sure to release bridge_node of Exynos MIPI-DSI driver.

[1] https://lists.freedesktop.org/archives/dri-devel/2017-March/135111.html

Linux 4.12-rc3

Daniel has requested this for some drm-intel-next work.

More stuff for 4.13:

- skl+ wm fixes from Mahesh Kumar
- some refactor and tests for i915_sw_fence (Chris)
- tune execlist/scheduler code (Chris)
- g4x,g33 gpu reset improvements (Chris, Mika)
- guc code cleanup (Michal Wajdeczko, Michał Winiarski)
- dp aux backlight improvements (Puthikorn Voravootivat)
- buffer based guc/host communication (Michal Wajdeczko)

* tag 'drm-intel-next-2017-05-29' of git://anongit.freedesktop.org/git/drm-intel: (253 commits)
  drm/i915: Update DRIVER_DATE to 20170529
  drm/i915: Keep the forcewake timer alive for 1ms past the most recent use
  drm/i915/guc: capture GuC logs if FW fails to load
  drm/i915/guc: Introduce buffer based cmd transport
  drm/i915/guc: Disable send function on fini
  drm: Add definition for eDP backlight frequency
  drm/i915: Drop AUX backlight enable check for backlight control
  drm/i915: Consolidate #ifdef CONFIG_INTEL_IOMMU
  drm/i915: Only GGTT vma may be pinned and prevent shrinking
  drm/i915: Serialize GTT/Aperture accesses on BXT
  drm/i915: Convert i915_gem_object_ops->flags values to use BIT()
  drm/i915/selftests: Silence compiler warning in igt_ctx_exec
  drm/i915/guc: Skip port assign on first iteration of GuC dequeue
  drm/i915: Remove misleading comment in request_alloc
  drm/i915/g33: Improve reset reliability
  Revert "drm/i915: Restore lost "Initialized i915" welcome message"
  drm/i915/huc: Update GLK HuC version
  drm/i915: Check for allocation failure
  drm/i915/guc: Remove action status and statistics from debugfs
  drm/i915/g4x: Improve gpu reset reliability
  ...

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

This patch removes unnecessary descriptions on
exynos_drm_crtc structure and adds one description
which specifies what pipe_clk member does.

pipe_clk support had been added by below patch without any description,
	 drm/exynos: add support for pipeline clock to the framework
		Commit-id : f26b9343Signed-off-by: Inki Dae <inki.dae@samsung.com>

Since bridge node is referenced during in the probe, it should be
released on removal.
Suggested-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

The dsi + panel is a parental relationship, so OF grpah is not needed.
Therefore, the current dsi_parse_dt function will throw an error,
because there is no linked OF graph for the case fimd + dsi + panel.

Parse the Pll burst and esc clock frequency properties in dsi_parse_dt()
and create a bridge_node only if there is an OF graph associated with dsi.
Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Andi Shyti <andi.shyti@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

Again no apparent explanation for the split except hysterical raisins.

Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

Pull thermal SoC management fixes from Eduardo Valentin:

 - fixes to TI SoC driver, Broadcom, qoriq

 - small sparse warning fix on thermal core

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal:
  thermal: broadcom: ns-thermal: default on iProc SoCs
  ti-soc-thermal: Fix a typo in a comment line
  ti-soc-thermal: Delete error messages for failed memory allocations in ti_bandgap_build()
  ti-soc-thermal: Use devm_kcalloc() in ti_bandgap_build()
  thermal: core: make thermal_emergency_poweroff static
  thermal: qoriq: remove useless call for of_thermal_get_trip_points()

UAPI Changes:
- Add DRM_MODE_ROTATE_ and DRM_MODE_REFLECT_ defines to the UAPI (Robert)

Cross-subsystem Changes:
- Standardize sync_file.txt documentation format (Mauro)

Core Changes:
- Turf drm_[cm]alloc functions for kvmalloc alternatives (Michal)
- Add optional mode_valid() hook to crtc/encoder/bridge (Jose)
- Improve documentation around mode validation/alteration (Daniel)
- Reduce sync_file construction time by deferring name creation (Chris)

Driver Changes:
- pl111: Wire up the clock divider and add debugfs (Eric)
- various: Fix include notation and remove -Iinclude/drm (Masahiro)
- stm: Add Benjamin Gaignard and Vincent Abriou as STM maintainers (Vincent)
- various: Miscellaneous trivial fixes to pl111/stm/vgem/vc4

Cc: Michal Hocko <mhocko@suse.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Robert Foss <robert.foss@collabora.com>
Cc: Vincent Abriou <vincent.abriou@st.com>
Cc: Jose Abreu <Jose.Abreu@synopsys.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>

* tag 'drm-misc-next-2017-05-26' of git://anongit.freedesktop.org/git/drm-misc: (55 commits)
  dma-buf/sync-file: Defer creation of sync_file->name
  sync_file.txt: standardize document format
  gpu: drm: gma500: remove two more dead variable
  drm/doc: Clarify mode_fixup vs. atomic_check a bit more
  drm/doc: Document adjusted/request modes a bit better
  drm: Add crtc/encoder/bridge->mode_valid() callbacks
  MAINTAINERS: update drm/stm maintainers list
  drm/stm: ltdc: fix duplicated arguments
  drm/pl111: Fix return value check in pl111_amba_probe()
  drm/amd: include <linux/delay.h> instead of "linux/delay.h"
  drm: Add DRM_MODE_ROTATE_ and DRM_MODE_REFLECT_ to UAPI
  drm/vgem: Fix return value check in vgem_init()
  drm/blend: Fix comment typ-o
  drm/stm: remove unneeded -Iinclude/drm compiler flag
  drm/vc4: fix include notation and remove -Iinclude/drm flag
  drm/pl111: Add a debugfs node to dump our registers.
  drm/pl111: make structure mode_config_funcs static
  drm/pl111: make structure pl111_display_funcs static
  drm/pl111: Register the clock divider and use it.
  drm: drop drm_[cm]alloc* helpers
  ...

Pull tty/serial fixes from Greg KH:
 "Here are some serial and tty fixes for 4.12-rc3. They are a bit bigger
  than normal, which is why I had them bake in linux-next for a few
  weeks and didn't send them to you for -rc2.

  They revert a few of the serdev patches from 4.12-rc1, and bring
  things back to how they were in 4.11, to try to make things a bit more
  stable there. Rob and Johan both agree that this is the way forward,
  so this isn't people squabbling over semantics. Other than that, just
  a few minor serial driver fixes that people have had problems with.

  All of these have been in linux-next for a few weeks with no reported
  issues"

* tag 'tty-4.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  serial: altera_uart: call iounmap() at driver remove
  serial: imx: ensure UCR3 and UFCR are setup correctly
  MAINTAINERS/serial: Change maintainer of jsm driver
  serial: enable serdev support
  tty/serdev: add serdev registration interface
  serdev: Restore serdev_device_write_buf for atomic context
  serial: core: fix crash in uart_suspend_port
  tty: fix port buffer locking
  tty: ehv_bytechan: clean up init error handling
  serial: ifx6x60: fix use-after-free on module unload
  serial: altera_jtaguart: adding iounmap()
  serial: exar: Fix stuck MSIs
  serial: efm32: Fix parity management in 'efm32_uart_console_get_options()'
  serdev: fix tty-port client deregistration
  Revert "tty_port: register tty ports with serdev bus"
  drivers/tty: 8250: only call fintek_8250_probe when doing port I/O

Pull powerpc fixes from Michael Ellerman:
 "Fix running SPU programs on Cell, and a few other minor fixes.

  Thanks to Alistair Popple, Jeremy Kerr, Michael Neuling, Nicholas
  Piggin"

* tag 'powerpc-4.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc: Add PPC_FEATURE userspace bits for SCV and DARN instructions
  powerpc/spufs: Fix hash faults for kernel regions
  powerpc: Fix booting P9 hash with CONFIG_PPC_RADIX_MMU=N
  powerpc/powernv/npu-dma.c: Fix opal_npu_destroy_context() call
  selftests/powerpc: Fix TM resched DSCR test with some compilers

Pull x86 fixes from Thomas Gleixner:
 "A series of fixes for X86:

   - The final fix for the end-of-stack issue in the unwinder
   - Handle non PAT systems gracefully
   - Prevent access to uninitiliazed memory
   - Move early delay calaibration after basic init
   - Fix Kconfig help text
   - Fix a cross compile issue
   - Unbreak older make versions"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/timers: Move simple_udelay_calibration past init_hypervisor_platform
  x86/alternatives: Prevent uninitialized stack byte read in apply_alternatives()
  x86/PAT: Fix Xorg regression on CPUs that don't support PAT
  x86/watchdog: Fix Kconfig help text file path reference to lockup watchdog documentation
  x86/build: Permit building with old make versions
  x86/unwind: Add end-of-stack check for ftrace handlers
  Revert "x86/entry: Fix the end of the stack for newly forked tasks"
  x86/boot: Use CROSS_COMPILE prefix for readelf

Pull timer fixlet from Thomas Gleixner:
 "Silence dmesg spam by making the posix cpu timer printks depend on
  print_fatal_signals"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  posix-timers: Make signal printks conditional

Pull RAS fixes from Thomas Gleixner:
 "Two fixlets for RAS:

   - Export memory_error() so the NFIT module can utilize it

   - Handle memory errors in NFIT correctly"

* 'ras-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  acpi, nfit: Fix the memory error check in nfit_handle_mce()
  x86/MCE: Export memory_error()

Pull perf tooling fixes from Thomas Gleixner:

 - Synchronization of tools and kernel headers

 - A series of fixes for perf report addressing various failures:
    * Handle invalid maps proper
    * Plug a memory leak
    * Handle frames and callchain order correctly

 - Fixes for handling inlines and children mode

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tools/include: Sync kernel ABI headers with tooling headers
  perf tools: Put caller above callee in --children mode
  perf report: Do not drop last inlined frame
  perf report: Always honor callchain order for inlined nodes
  perf script: Add --inline option for debugging
  perf report: Fix off-by-one for non-activation frames
  perf report: Fix memory leak in addr2line when called by addr2inlines
  perf report: Don't crash on invalid maps in `-g srcline` mode

Pull locking fix from Thomas Gleixner:
 "A fix for a state leak which was introduced in the recent rework of
  futex/rtmutex interaction"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex,rt_mutex: Fix rt_mutex_cleanup_proxy_lock()

Pull kthread fix from Thomas Gleixner:
 "A single fix which prevents a use after free when kthread fork fails"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  kthread: Fix use-after-free if kthread fork fails

Pull ftrace fixes from Steven Rostedt:
 "There's been a few memory issues found with ftrace.

  One was simply a memory leak where not all was being freed that should
  have been in releasing a file pointer on set_graph_function.

  Then Thomas found that the ftrace trampolines were marked for
  read/write as well as execute. To shrink the possible attack surface,
  he added calls to set them to ro. Which also uncovered some other
  issues with freeing module allocated memory that had its permissions
  changed.

  Kprobes had a similar issue which is fixed and a selftest was added to
  trigger that issue again"

* tag 'trace-v4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  x86/ftrace: Make sure that ftrace trampolines are not RWX
  x86/mm/ftrace: Do not bug in early boot on irqs_disabled in cpu_flush_range()
  selftests/ftrace: Add a testcase for many kprobe events
  kprobes/x86: Fix to set RWX bits correctly before releasing trampoline
  ftrace: Fix memory leak in ftrace_graph_release()

ftrace use module_alloc() to allocate trampoline pages. The mapping of
module_alloc() is RWX, which makes sense as the memory is written to right
after allocation. But nothing makes these pages RO after writing to them.

Add proper set_memory_rw/ro() calls to protect the trampolines after
modification.

Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1705251056410.1862@nanosSigned-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

With function tracing starting in early bootup and having its trampoline
pages being read only, a bug triggered with the following:

kernel BUG at arch/x86/mm/pageattr.c:189!
invalid opcode: 0000 [#1] SMP
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 4.12.0-rc2-test+ #3
Hardware name: MSI MS-7823/CSM-H87M-G43 (MS-7823), BIOS V1.6 02/22/2014
task: ffffffffb4222500 task.stack: ffffffffb4200000
RIP: 0010:change_page_attr_set_clr+0x269/0x302
RSP: 0000:ffffffffb4203c88 EFLAGS: 00010046
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 00000001b6000000
RDX: ffffffffb4203d40 RSI: 0000000000000000 RDI: ffffffffb4240d60
RBP: ffffffffb4203d18 R08: 00000001b6000000 R09: 0000000000000001
R10: ffffffffb4203aa8 R11: 0000000000000003 R12: ffffffffc029b000
R13: ffffffffb4203d40 R14: 0000000000000001 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff9a639ea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff9a636b384000 CR3: 00000001ea21d000 CR4: 00000000000406b0
Call Trace:
 change_page_attr_clear+0x1f/0x21
 set_memory_ro+0x1e/0x20
 arch_ftrace_update_trampoline+0x207/0x21c
 ? ftrace_caller+0x64/0x64
 ? 0xffffffffc029b000
 ftrace_startup+0xf4/0x198
 register_ftrace_function+0x26/0x3c
 function_trace_init+0x5e/0x73
 tracer_init+0x1e/0x23
 tracing_set_tracer+0x127/0x15a
 register_tracer+0x19b/0x1bc
 init_function_trace+0x90/0x92
 early_trace_init+0x236/0x2b3
 start_kernel+0x200/0x3f5
 x86_64_start_reservations+0x29/0x2b
 x86_64_start_kernel+0x17c/0x18f
 secondary_startup_64+0x9f/0x9f
 ? secondary_startup_64+0x9f/0x9f

Interrupts should not be enabled at this early in the boot process. It is
also fine to leave interrupts enabled during this time as there's only one
CPU running, and on_each_cpu() means to only run on the current CPU.

If early_boot_irqs_disabled is set, it is safe to run cpu_flush_range() with
interrupts disabled. Don't trigger a BUG_ON() in that case.

Link: http://lkml.kernel.org/r/20170526093717.0be3b849@gandalf.local.homeSuggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

Add a testcase to test kprobes via ftrace interface
with many concurrent kprobe events.

This tries to add many kprobe events (up to 256) on
kernel functions. To avoid making ftrace-based
kprobes (kprobes on fentry), it skips first N bytes
(on x86 N=5, on ppc or arm N=4) of function entry.
After that, it enables all those events, disable it,
and remove it.

Since the unoptimization buffer reclaiming will
be delayed, after removing events, it will wait
enough time.

Link: http://lkml.kernel.org/r/149577388470.11702.11832460851769204511.stgit@devboxSigned-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

Fix kprobes to set(recover) RWX bits correctly on trampoline
buffer before releasing it. Releasing readonly page to
module_memfree() crash the kernel.

Without this fix, if kprobes user register a bunch of kprobes
in function body (since kprobes on function entry usually
use ftrace) and unregister it, kernel hits a BUG and crash.

Link: http://lkml.kernel.org/r/149570868652.3518.14120169373590420503.stgit@devboxSigned-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Fixes: d0381c81 ("kprobes/x86: Set kprobes pages read-only")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>