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9 years agodrm/i915: add i915 specific connector debugfs file for DPCD
Jani Nikula [Wed, 1 Apr 2015 08:15:21 +0000 (11:15 +0300)]
drm/i915: add i915 specific connector debugfs file for DPCD

Occasionally it would be interesting to read some of the DPCD registers
for debug purposes, without having to resort to logging. Add an i915
specific i915_dpcd debugfs file for DP and eDP connectors to dump parts
of the DPCD. Currently the DPCD addresses to be dumped are statically
configured, and more can be added trivially.

The implementation also makes it relatively easy to add other i915 and
connector specific debugfs files in the future, as necessary.

This is currently i915 specific just because there's no generic way to
do AUX transactions given just a drm_connector. However it's all pretty
straightforward to port to other drivers.

v2: Add more DPCD registers to dump.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/bdw: WaProgramL3SqcReg1Default
Rodrigo Vivi [Tue, 31 Mar 2015 23:03:21 +0000 (16:03 -0700)]
drm/i915/bdw: WaProgramL3SqcReg1Default

Program the default initial value of the L3SqcReg1 on BDW for performance

v2: Default confirmed and using intel_ring_emit_wa as Mika pointed out.

v3: Spec shows now a different value. It tells us to set to 0x784000
    instead the 0x610000 that is there already.
    Also rebased after a long time so using WA_WRITE now.

Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/skl: Enabling PSR2 SU with frame sync
Sonika Jindal [Thu, 2 Apr 2015 05:32:44 +0000 (11:02 +0530)]
drm/i915/skl: Enabling PSR2 SU with frame sync

We make use of HW tracking for Selective update region and enable frame sync on
sink. We use hardware's hardcoded data values for frame sync and GTC.

v2: Add 3200x2000 resolution restriction with PSR2, move psr2_support to i915_psr
struct, add aux_frame_sync to independently control aux frame sync, rename the
TP2 TIME macro for 2500us (Rodrigo, Siva)
v3: Moving the resolution restriction to intel_psr_enable so that we check it
only once(Durga)

Cc: Durgadoss R <durgadoss.r@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
Reviewed-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Make debugfs/i915_gem_request more friendly
Chris Wilson [Wed, 1 Apr 2015 09:36:56 +0000 (10:36 +0100)]
drm/i915: Make debugfs/i915_gem_request more friendly

Count the number of requests in a ring for the user and show who
submitted them.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Set best_encoder field of connector_state also when disabling
Ander Conselvan de Oliveira [Tue, 31 Mar 2015 08:35:00 +0000 (11:35 +0300)]
drm/i915: Set best_encoder field of connector_state also when disabling

The best_encoder field of connector_state wasn't properly set when a
connector was being disabled, leading to an incosistent atomic state.

For now, this doesn't cause anything to blow up, because everywhere
we're using connector_state->best_encoder there is a check for
connector_state->crtc which is properly initialized. I reached the issue
while testing some patches I haven't sent out yet, that remove the usage
of intel_connector->new_encoder from check_digital_port_conflicts(). In
that case, it would be possible to trigger the converted version of the
WARN in that function.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
[danvet: Add commit message augmentation Ander supplied.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: base gmbus pin validity check on the gmbus pin map array
Jani Nikula [Thu, 26 Mar 2015 22:20:22 +0000 (00:20 +0200)]
drm/i915: base gmbus pin validity check on the gmbus pin map array

This will be helpful for adding future platforms. It is better to keep
the information in the single point of truth (the table) instead of
duplicating it into the validity function.

While at it, add dev_priv parameter to the function, also to prepare for
adding future platform support.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: index gmbus tables using the pin pair number
Jani Nikula [Wed, 1 Apr 2015 07:55:04 +0000 (10:55 +0300)]
drm/i915: index gmbus tables using the pin pair number

Index the gmbus tables directly using the pin instead of having a
confusing "port = i + 1" mapping. This finishes off removing the "gmbus
port" as a notion, and leaves us with just the "gmbus pin".

As pin 0 is invalid by definition and the gmbus tables will have a gap
at that index, add pin validity check to all the loops. This will be
benefitial for supporting platforms that have different numbers of pins,
or gaps.

v2: s/GMBUS_PIN_MAX/GMBUS_NUM_PINS/ (Ville, Daniel)

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: refer to pin instead of port in the intel_i2c.c interfaces
Jani Nikula [Thu, 26 Mar 2015 22:20:20 +0000 (00:20 +0200)]
drm/i915: refer to pin instead of port in the intel_i2c.c interfaces

Rename intel_gmbus_is_port_valid to intel_gmbus_is_valid_pin, and rename
port parameters to pin as well. This matches usage all around, as
usually a pin is passed to the validity check function. No functional
changes.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: rename GMBUS_PORT_* macros as GMBUS_PIN_*
Jani Nikula [Thu, 26 Mar 2015 22:20:19 +0000 (00:20 +0200)]
drm/i915: rename GMBUS_PORT_* macros as GMBUS_PIN_*

The specs refer to pin pairs. Start moving towards using pin rather than
port all around to avoid confusion. No functional changes.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Fix for ringbuf space wait in LRC mode
John Harrison [Thu, 19 Mar 2015 12:30:09 +0000 (12:30 +0000)]
drm/i915: Fix for ringbuf space wait in LRC mode

The legacy and LRC code paths have an almost identical procedure for waiting for
space in the ring buffer. They both search for a request in the free list that
will advance the tail to a point where sufficient space is available. They then
wait for that request, retire it and recalculate the free space value.

Unfortunately, a bug in the LRC side meant that the resulting free space might
not be as large as expected and indeed, might not be sufficient. This is because
it was testing against the value of request->tail not request->postfix. Whereas,
when a request is retired, ringbuf->tail is updated to req->postfix not
req->tail.

Another significant difference between the two is that the LRC one did not trust
the wait for request to work! It redid the is there enough space available test
and would fail the call if insufficient. Whereas, the legacy version just said
'return 0' - it assumed the preceeding code works. This difference meant that
the LRC version still worked even with the bug - it just fell back to the
polling wait path.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Thomas Daniel <thomas.daniel@intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Move common request allocation code into a common function
John Harrison [Thu, 19 Mar 2015 12:30:08 +0000 (12:30 +0000)]
drm/i915: Move common request allocation code into a common function

The request allocation code is largely duplicated between legacy mode and
execlist mode. The actual difference between the two versions of the code is
pretty minimal.

This patch moves the common code out into a separate function. This is then
called by the execution specific version prior to setting up the one different
value.

For: VIZ-5190
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Make intel_logical_ring_begin() static
John Harrison [Thu, 19 Mar 2015 12:30:07 +0000 (12:30 +0000)]
drm/i915: Make intel_logical_ring_begin() static

The only usage of intel_logical_ring_begin() is within intel_lrc.c so it can be
made static. To avoid a forward declaration at the top of the file, it and bunch
of other functions have been shuffled upwards.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Rename 'do_execbuf' to 'execbuf_submit'
John Harrison [Thu, 19 Mar 2015 12:30:06 +0000 (12:30 +0000)]
drm/i915: Rename 'do_execbuf' to 'execbuf_submit'

The submission portion of the execbuffer code path was abstracted into a
function pointer indirection as part of the legacy vs execlist work. The two
implementation functions are called 'i915_gem_ringbuffer_submission' and
'intel_execlists_submission' but the pointer was called 'do_execbuf'. There is
already a 'i915_gem_do_execbuffer' function (which is what calls the pointer
indirection). The name of the pointer is therefore considered to be backwards
and should be changed.

This patch renames it to 'execbuf_submit' which is hopefully a bit clearer.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Convert the ddi cdclk code to get_display_clock_speed
Ville Syrjälä [Tue, 31 Mar 2015 11:12:01 +0000 (14:12 +0300)]
drm/i915: Convert the ddi cdclk code to get_display_clock_speed

Unify the HSW/BDW/SKL cdclk extraction code to conform to the same
.get_display_clock_speed() mold that all the other platforms
use.

v2: Update due to SKL code getting added

v3: Rebase on top of -nightly (introduction of intel_audio.c) (Mika Kahola)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[danvet: Add v3 note as suggested by Damien.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Simplify ilk_get_aux_clock_divider
Ville Syrjälä [Tue, 31 Mar 2015 11:11:59 +0000 (14:11 +0300)]
drm/i915: Simplify ilk_get_aux_clock_divider

Now that we are "extracting" the cdclk frequency on ILK-IVB we
can also simplify ilk_get_aux_clock_divider() to calculate the
divider based on cdclk instead of hardcoding the values.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Assume 400MHz cdclk for the rest of gen4-7
Ville Syrjälä [Tue, 31 Mar 2015 11:11:56 +0000 (14:11 +0300)]
drm/i915: Assume 400MHz cdclk for the rest of gen4-7

We don't currently have cdclk extraction code for 965g,snb,ivb.
Let's assume 400 MHz until we know better. That seems to match hints
in various vague documents. Whether that's good enough is not
entirely clear.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Acked-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: ILK cdclk seems to be 450MHz
Ville Syrjälä [Tue, 31 Mar 2015 11:11:54 +0000 (14:11 +0300)]
drm/i915: ILK cdclk seems to be 450MHz

Based on the BIOS DP A AUX 2x clock divider the cdclk frequency
on ILK is 450Mhz. At least that holds on my ILK and it matches
how we program the divider.

Supposedly cdclk is 400MHz on SNB and IVB, again based on the AUX 2x
clock divider. Note that I don't have a SNB or IVB machine with
eDP so I couldn't verify what the BIOS used, so this notion is
purely based on our current code,

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Return more precise cdclk for gen2/3
Ville Syrjälä [Tue, 31 Mar 2015 11:09:47 +0000 (14:09 +0300)]
drm/i915: Return more precise cdclk for gen2/3

Fill out the lower three digits for gen2 and gen3 cdclk frqeuncy. It's
not clear if these are accurate frquencies or just in the ballpark, but
without docs this is the best we can do.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Enable DVO 2x clock around DVO encoder init
Ville Syrjälä [Tue, 31 Mar 2015 07:37:21 +0000 (10:37 +0300)]
drm/i915: Enable DVO 2x clock around DVO encoder init

ns2501 requires the DVO 2x clock before it will respond to i2c access,
so make sure the clock is enabled when we try to initialize the encoder.

Fixes the display getting lost on module reload on my Fujitsu/Siemens
Lifebook S6010.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Mark the overlay active only if we got ring space
Ville Syrjälä [Tue, 31 Mar 2015 07:37:24 +0000 (10:37 +0300)]
drm/i915: Mark the overlay active only if we got ring space

After the GPU has wedged we can't turn on the overlay anymore. Only mark
it as active if we succeed in allocating ring space. This prevents a
WARN (previous;y a BUG) during driver unload if we attempted to use the
overlay after the GPU had already wedged.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Convert overlay->{active, pfit_active} to bools
Ville Syrjälä [Tue, 31 Mar 2015 07:37:23 +0000 (10:37 +0300)]
drm/i915: Convert overlay->{active, pfit_active} to bools

overlay.{active,pfit_active} are just on/off flags, so make them bool.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Convert BUGs to WARNs in the video overlay code
Ville Syrjälä [Tue, 31 Mar 2015 07:37:22 +0000 (10:37 +0300)]
drm/i915: Convert BUGs to WARNs in the video overlay code

BUG is bad, just use WARN.

Also drop one BUG(!overlay) since we'd oops anyway when dereferencing
it.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/chv: Remove Wait for a previous gfx force-off
Deepak S [Sat, 28 Mar 2015 09:53:34 +0000 (15:23 +0530)]
drm/i915/chv: Remove Wait for a previous gfx force-off

On CHV, PUNIT team confirmed that 'VLV_GFX_CLK_STATUS_BIT' is not a
sticky bit and it will always be set. So ignore Check for previous
Gfx force off during suspend and allow the force clk as part S0ix
Sequence

Signed-off-by: Deepak S <deepak.s@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: PSR: Keep sink state consistent with source
Durgadoss R [Fri, 27 Mar 2015 11:51:32 +0000 (17:21 +0530)]
drm/i915: PSR: Keep sink state consistent with source

BSpec recommends to keep the main link state consistent
between the source and the sink. As per that, update
the main link state in sink DPCD register to 'active',
for Valleyview based platforms.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Tested-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agoEnabled dithering in the intel VCH DVO for 18bpp pipelines.
Thomas Richter [Sat, 28 Mar 2015 09:57:46 +0000 (10:57 +0100)]
Enabled dithering in the intel VCH DVO for 18bpp pipelines.

Signed-off-by: Thomas Richter <thor@math.tu-berlin.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Add i915_gem_request_unreference__unlocked
Chris Wilson [Fri, 27 Mar 2015 11:01:36 +0000 (11:01 +0000)]
drm/i915: Add i915_gem_request_unreference__unlocked

We were missing a convenience stub to aquire the right mutex whilst
dropping the request, so add it.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Check lane sharing between pipes B & C using atomic state
Ander Conselvan de Oliveira [Mon, 30 Mar 2015 05:33:12 +0000 (08:33 +0300)]
drm/i915: Check lane sharing between pipes B & C using atomic state

Makes that code atomic ready.

v2: Acquire crtc_state for the "other" pipe only when needed. (Daniel)

v3: Really only acquire the other state if necessary. (Daniel)

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agoMerge tag 'v4.0-rc6' into drm-intel-next
Daniel Vetter [Mon, 30 Mar 2015 14:37:08 +0000 (16:37 +0200)]
Merge tag 'v4.0-rc6' into drm-intel-next

Backmerge Linux 4.0-rc6 because conflicts are (again) getting out of
hand. To make sure we don't lose any bugfixes from the 4.0-rc5-rc6
flurry of patches we've applied them all to -next too.

Conflicts:
drivers/gpu/drm/i915/intel_display.c

Always take the version from -next, we've already handled all
conflicts with explicit cherrypicking.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
9 years agoLinux 4.0-rc6
Linus Torvalds [Sun, 29 Mar 2015 22:26:31 +0000 (15:26 -0700)]
Linux 4.0-rc6

9 years agoMerge tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Sun, 29 Mar 2015 22:09:31 +0000 (15:09 -0700)]
Merge tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "The latest and greatest fixes for ARM platform code.  Worth pointing
  out are:

   - Lines-wise, largest is a PXA fix for dealing with interrupts on DT
     that was quite broken.  It's still newish code so while we could
     have held this off, it seemed appropriate to include now

   - Some GPIO fixes for OMAP platforms added a few lines.  This was
     also fixes for code recently added (this release).

   - Small OMAP timer fix to behave better with partially upstreamed
     platforms, which is quite welcome.

   - Allwinner fixes about operating point control, reducing
     overclocking in some cases for better stability.

  plus a handful of other smaller fixes across the map"

* tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm64: juno: Fix misleading name of UART reference clock
  ARM: dts: sunxi: Remove overclocked/overvoltaged OPP
  ARM: dts: sun4i: a10-lime: Override and remove 1008MHz OPP setting
  ARM: socfpga: dts: fix spi1 interrupt
  ARM: dts: Fix gpio interrupts for dm816x
  ARM: dts: dra7: remove ti,hwmod property from pcie phy
  ARM: OMAP: dmtimer: disable pm runtime on remove
  ARM: OMAP: dmtimer: check for pm_runtime_get_sync() failure
  ARM: OMAP2+: Fix socbus family info for AM33xx devices
  ARM: dts: omap3: Add missing dmas for crypto
  ARM: dts: rockchip: disable gmac by default in rk3288.dtsi
  MAINTAINERS: add rockchip regexp to the ARM/Rockchip entry
  ARM: pxa: fix pxa interrupts handling in DT
  ARM: pxa: Fix typo in zeus.c
  ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver usage

9 years agoMerge tag 'sunxi-fixes-for-4.0' of https://git.kernel.org/pub/scm/linux/kernel/git...
Olof Johansson [Sun, 29 Mar 2015 21:00:53 +0000 (14:00 -0700)]
Merge tag 'sunxi-fixes-for-4.0' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into fixes

Allwinner fixes for 4.0

There's a few fixes to merge for 4.0, one to add a select in the machine
Kconfig option to fix a potential build failure, and two fixing cpufreq related
issues.

* tag 'sunxi-fixes-for-4.0' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
  ARM: dts: sunxi: Remove overclocked/overvoltaged OPP
  ARM: dts: sun4i: a10-lime: Override and remove 1008MHz OPP setting
  ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver usage

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoMerge tag 'fixes-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind...
Olof Johansson [Sun, 29 Mar 2015 20:58:54 +0000 (13:58 -0700)]
Merge tag 'fixes-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Fixes for omaps for the -rc cycle:

- Fix a device tree based booting vs legacy booting regression for
  omap3 crypto hardware by adding the missing DMA channels.

- Fix /sys/bus/soc/devices/soc0/family for am33xx devices.

- Fix two timer issues that can cause hangs if the timer related
  hwmod data is missing like it often initially is for new SoCs.

- Remove pcie hwmods entry from dts as that causes runtime PM to
  fail for the PHYs.

- A paper bag type dts configuration fix for dm816x GPIO
  interrupts that I just noticed. This is most of the changes
  diffstat wise, but as it's a basic feature for connecting
  devices and things work otherwise, it should be fixed.

* tag 'fixes-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: Fix gpio interrupts for dm816x
  ARM: dts: dra7: remove ti,hwmod property from pcie phy
  ARM: OMAP: dmtimer: disable pm runtime on remove
  ARM: OMAP: dmtimer: check for pm_runtime_get_sync() failure
  ARM: OMAP2+: Fix socbus family info for AM33xx devices
  ARM: dts: omap3: Add missing dmas for crypto

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoMerge tag 'socfpga_fix_for_v4.0_2' of git://git.rocketboards.org/linux-socfpga-next...
Olof Johansson [Sun, 29 Mar 2015 20:58:04 +0000 (13:58 -0700)]
Merge tag 'socfpga_fix_for_v4.0_2' of git://git.rocketboards.org/linux-socfpga-next into fixes

Late fix for v4.0 on the SoCFPGA platform:
- Fix interrupt number for SPI1 interface

* tag 'socfpga_fix_for_v4.0_2' of git://git.rocketboards.org/linux-socfpga-next:
  ARM: socfpga: dts: fix spi1 interrupt

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoarm64: juno: Fix misleading name of UART reference clock
Dave Martin [Tue, 17 Mar 2015 12:35:41 +0000 (12:35 +0000)]
arm64: juno: Fix misleading name of UART reference clock

The UART reference clock speed is 7273.8 kHz, not 72738 kHz.

Dots aren't usually used in node names even though ePAPR permits
them.  However, this can easily be avoided by expressing the
frequency in Hz, not kHz.

This patch changes the name to refclk7273800hz, reflecting the
actual clock speed.

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoMerge tag 'fixes-for-v4.0-rc5' of https://github.com/rjarzmik/linux into fixes
Olof Johansson [Sun, 29 Mar 2015 20:47:21 +0000 (13:47 -0700)]
Merge tag 'fixes-for-v4.0-rc5' of https://github.com/rjarzmik/linux into fixes

arm: pxa: fixes for v4.0-rc5

There are only 2 fixes, one for the zeus board about the regulator changes,
where a typo prevented the zeus board from having a working can regulator,
and one regression triggered by the interrupts IRQ shift of 16 affecting all
boards.

* tag 'fixes-for-v4.0-rc5' of https://github.com/rjarzmik/linux:
  ARM: pxa: fix pxa interrupts handling in DT
  ARM: pxa: Fix typo in zeus.c

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 28 Mar 2015 18:25:04 +0000 (11:25 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fix from Ingo Molnar:
 "Fix x86 syscall exit code bug that resulted in spurious non-execution
  of TIF-driven user-return worklets, causing big trouble for things
  like KVM that rely on user notifiers for correctness of their vcpu
  model, causing crashes like double faults"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/asm/entry: Check for syscall exit work with IRQs disabled

9 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 28 Mar 2015 18:21:23 +0000 (11:21 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer fixes from Ingo Molnar:
 "Two clocksource driver fixes, and an idle loop RCU warning fix"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource/drivers/sun5i: Fix cpufreq interaction with sched_clock()
  clocksource/drivers: Fix various !CONFIG_HAS_IOMEM build errors
  timers/tick/broadcast-hrtimer: Fix suspicious RCU usage in idle loop

9 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 28 Mar 2015 18:17:32 +0000 (11:17 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fix from Ingo Molnar:
 "A single sched/rt corner case fix for RLIMIT_RTIME correctness"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched: Fix RLIMIT_RTTIME when PI-boosting to RT

9 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 28 Mar 2015 18:12:08 +0000 (11:12 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf fix from Ingo Molnar:
 "A perf kernel side fix for a fuzzer triggered lockup"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf: Fix irq_work 'tail' recursion

9 years agoMerge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 28 Mar 2015 18:05:03 +0000 (11:05 -0700)]
Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking fix from Ingo Molnar:
 "A module unload lockdep race fix"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  lockdep: Fix the module unload key range freeing logic

9 years agoMerge branch 'parisc-4.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller...
Linus Torvalds [Sat, 28 Mar 2015 17:58:53 +0000 (10:58 -0700)]
Merge branch 'parisc-4.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parsic fixes from Helge Deller:
 "One patch from Mikulas fixes a bug on parisc by artifically
  incrementing the counter in pmd_free when the kernel tries to free
  the preallocated pmd.

  Other than that we now prevent that syscalls gets added without
  incrementing __NR_Linux_syscalls and fix the initial pmd setup code
  if a default page size greater than 4k has been selected"

* 'parisc-4.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Fix pmd code to depend on PT_NLEVELS value, not on CONFIG_64BIT
  parisc: mm: don't count preallocated pmds
  parisc: Add compile-time check when adding new syscalls

9 years agoMerge git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sat, 28 Mar 2015 17:54:59 +0000 (10:54 -0700)]
Merge git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm ppc bugfixes from Marcelo Tosatti.

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: PPC: Book3S HV: Fix instruction emulation
  KVM: PPC: Book3S HV: Endian fix for accessing VPA yield count
  KVM: PPC: Book3S HV: Fix spinlock/mutex ordering issue in kvmppc_set_lpcr()

9 years agoMerge tag 'arc-4.0-fixes-part-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 28 Mar 2015 17:47:27 +0000 (09:47 -0800)]
Merge tag 'arc-4.0-fixes-part-2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:
 "We found some issues with signal handling taking down the system.  I
  know its late, but these are important and all marked for stable.

  ARC signal handling related fixes uncovered during recent testing of
  NPTL tools"

* tag 'arc-4.0-fixes-part-2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: signal handling robustify
  ARC: SA_SIGINFO ucontext regs off-by-one

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Sat, 28 Mar 2015 17:41:22 +0000 (10:41 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

Pull selinux bugfix from James Morris.

Fix broken return value.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  selinux: fix sel_write_enforce broken return value

9 years agoMerge git://www.linux-watchdog.org/linux-watchdog
Linus Torvalds [Fri, 27 Mar 2015 21:45:42 +0000 (14:45 -0700)]
Merge git://www.linux-watchdog.org/linux-watchdog

Pull watchdog fixes from Wim Van Sebroeck:

 - mtk_wdt: signedness bug in mtk_wdt_start()

 - imgpdc: Fix NULL pointer dereference during probe and fix the default
   heartbeat

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: imgpdc: Fix default heartbeat
  watchdog: imgpdc: Fix probe NULL pointer dereference
  watchdog: mtk_wdt: signedness bug in mtk_wdt_start()

9 years agoMerge tag 'sound-4.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 27 Mar 2015 21:38:02 +0000 (14:38 -0700)]
Merge tag 'sound-4.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Three trivial oneliner fixes for HD-audio.

  Two are device-specific quirks while one is a generic fix for recent
  Realtek codecs"

* tag 'sound-4.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Add one more node in the EAPD supporting candidate list
  ALSA: hda_intel: apply the Seperate stream_tag for Sunrise Point
  ALSA: hda - Add dock support for Thinkpad T450s (17aa:5036)

9 years agodrm/i915: Update DRIVER_DATE to 20150327
Daniel Vetter [Fri, 27 Mar 2015 19:21:01 +0000 (20:21 +0100)]
drm/i915: Update DRIVER_DATE to 20150327

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Skip allocating shadow batch for 0-length batches
Chris Wilson [Fri, 27 Mar 2015 11:02:10 +0000 (11:02 +0000)]
drm/i915: Skip allocating shadow batch for 0-length batches

Since

commit 17cabf571e50677d980e9ab2a43c5f11213003ae
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Wed Jan 14 11:20:57 2015 +0000

    drm/i915: Trim the command parser allocations

we may then try to allocate a zero-sized object and attempt to extract
its pages. Understandably this fails.

Testcase: igt/gem_exec_nop #ivb,byt,hsw
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Handle error to get connector state when staging config
Ander Conselvan de Oliveira [Fri, 27 Mar 2015 13:33:51 +0000 (15:33 +0200)]
drm/i915: Handle error to get connector state when staging config

The return value of one of the calls to drm_atomic_get_connector_state()
in intel_modeset_stage_output_state() wasn't checked for errors.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Compare GGTT view structs instead of types
Joonas Lahtinen [Fri, 27 Mar 2015 11:09:22 +0000 (13:09 +0200)]
drm/i915: Compare GGTT view structs instead of types

To allow for views where the view type is not defined by the view type only,
like it is in stereo or rotated 90 degree view, change the semantic to require
the whole view structure for comparison when we match a GGTT view.

This allows including parameters like offset to be included in the view which
is useful for eg. partial views.

v3:
- Rely on ggtt_view type being 0 for non-GGTT vma's, which equals to
  I915_GGTT_VIEW_NORMAL. (Daniel Vetter)
- Do not use potentially slower comparison when we only want to know if
  something is or is not a normal view.
- Rebase on top of rotated view patches. Add rotated view singleton.
- If one view is missing in comparison they're equal only if both are missing.

v4:
- Use comparison helper in obj_to_ggtt_view too. (Tvrtko Ursulin)
- Do WARN_ON if one view is NULL. (Tvrtko Ursulin)

Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: fix simple_return.cocci warnings
kbuild test robot [Fri, 27 Mar 2015 11:26:35 +0000 (19:26 +0800)]
drm/i915: fix simple_return.cocci warnings

drivers/gpu/drm/i915/i915_gem_gtt.c:1349:1-4: WARNING: end returns can be simpified and declaration on line 1347 can be dropped

 Simplify a trivial if-return sequence.  Possibly combine with a
 preceding function call.
Generated by: scripts/coccinelle/misc/simple_return.cocci

CC: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Add module param to test the load detect code
Daniel Vetter [Tue, 3 Mar 2015 17:03:47 +0000 (18:03 +0100)]
drm/i915: Add module param to test the load detect code

This is useful for writing igts to make sure we don't break this,
without being forced to own a one of these dinosaurs.

Suggested-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Remove usage of encoder->new_crtc from clock computations
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:19 +0000 (16:18 +0200)]
drm/i915: Remove usage of encoder->new_crtc from clock computations

Some of the crtc_compute_clock() still depended on encoder->new_crtc
since they didn't use intel_pipe_will_have_type() and used an open
coded version of that function instead. This patch replaces those with
the appropriate code that checks the atomic state intead.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
[danvet: Separate the if (!connector) continue to facility easier
extraction of a loop iterator for all of these (there's lots more in
i915 and atomic helpers).]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agoMerge branch 'upstream' of git://git.infradead.org/users/pcmoore/selinux into for...
James Morris [Fri, 27 Mar 2015 09:33:27 +0000 (20:33 +1100)]
Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/selinux into for-linus

9 years agodrm/i915: Don't look at staged config crtc when changing DRRS state
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:18 +0000 (16:18 +0200)]
drm/i915: Don't look at staged config crtc when changing DRRS state

The function intel_dp_set_drrs_state() would decide which pipe to
downclock based on the staged config for the given connector. However,
the result of that function is immediate, and it uses input values from
crtc->config, so it should be looking at the current crtc instead.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Convert intel_pipe_will_have_type() to using atomic state
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:17 +0000 (16:18 +0200)]
drm/i915: Convert intel_pipe_will_have_type() to using atomic state

Pass a crtc_state to it and find whether the pipe has an encoder of a
given type by looking at the drm_atomic_state the crtc_state points to.

Until recently i9xx_get_refclk() used to be called indirectly from
vlv_force_pll_on() with a dummy crtc_state. That dummy crtc state is not
converted to be part of a full drm atomic state, so add a WARN in case
someone decides to call that again with a such dummy state. This was
removed in

commit 9cbe40c15a753e02f5da16f6de901decf3276cf1
Author: Vijay Purushothaman <vijay.a.purushothaman@linux.intel.com>
Date:   Thu Mar 5 19:33:08 2015 +0530

    drm/i915: Update prop, int co-eff and gain threshold for CHV

v2: Warn if there is no connectors for a given crtc. (Daniel)
    Replace comment i9xx_get_refclk() with a WARN_ON(). (Ander)

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
[danvet: Add commit reference for when i9xx_get_refclk was removed.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Pass an atomic state to modeset_global_resources() functions
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:15 +0000 (16:18 +0200)]
drm/i915: Pass an atomic state to modeset_global_resources() functions

Follow up patches will convert some functions called from there to use
the atomic state, instead of directly accessing the new or current
config. This patch just changes the parameters, but shouldn't have any
functional changes.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Add dynamic page trace events
Michel Thierry [Tue, 24 Mar 2015 15:46:23 +0000 (15:46 +0000)]
drm/i915: Add dynamic page trace events

Traces for page directories and tables allocation and map.

v2: Removed references to teardown.
v3: bitmap_scnprintf has been deprecated.
v4: Replace bitmap_scnprintf with scnprintf correctly, and get right
range lengths. (Mika)

Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Finish gen6/7 dynamic page table allocation
Michel Thierry [Tue, 24 Mar 2015 15:46:22 +0000 (15:46 +0000)]
drm/i915: Finish gen6/7 dynamic page table allocation

This patch continues on the idea from "Track GEN6 page table usage".
From here on, in the steady state, PDEs are all pointing to the scratch
page table (as recommended in the spec). When an object is allocated in
the VA range, the code will determine if we need to allocate a page for
the page table. Similarly when the object is destroyed, we will remove,
and free the page table pointing the PDE back to the scratch page.

Following patches will work to unify the code a bit as we bring in GEN8
support. GEN6 and GEN8 are different enough that I had a hard time to
get to this point with as much common code as I do.

The aliasing PPGTT must pre-allocate all of the page tables. There are a
few reasons for this. Two trivial ones: aliasing ppgtt goes through the
ggtt paths, so it's hard to maintain, we currently do not restore the
default context (assuming the previous force reload is indeed
necessary). Most importantly though, the only way (it seems from
empirical evidence) to invalidate the CS TLBs on non-render ring is to
either use ring sync (which requires actually stopping the rings in
order to synchronize when the sync completes vs. where you are in
execution), or to reload DCLV.  Since without full PPGTT we do not ever
reload the DCLV register, there is no good way to achieve this. The
simplest solution is just to not support dynamic page table
creation/destruction in the aliasing PPGTT.

We could always reload DCLV, but this seems like quite a bit of excess
overhead only to save at most 2MB-4k of memory for the aliasing PPGTT
page tables.

v2: Make the page table bitmap declared inside the function (Chris)
Simplify the way scratching address space works.
Move the alloc/teardown tracepoints up a level in the call stack so that
both all implementations get the trace.

v3: Updated trace event to spit out a name

v4: Aliasing ppgtt is now initialized differently (in setup global gtt)

v5: Rebase to latest code. Also removed unnecessary aliasing ppgtt check
for trace, as it is no longer possible after the PPGTT cleanup patch series
of a couple of months ago (Daniel).

v6: Implement changes from code review (Daniel):
 - allocate/teardown_va_range calls added.
 - Add a scratch page allocation helper (only need the address).
 - Move trace events to a new patch.
 - Use updated mark_tlbs_dirty.
 - Moved pt preallocation for aliasing ppgtt into gen6_ppgtt_init.

v7: teardown_va_range removed (Daniel).
    In init, gen6_ppgtt_clear_range call is only needed for aliasing ppgtt.

v8: Rebase after s/page_tables/page_table/.

v9: Remove unnecessary scratch flag in page_table struct, future patches
can just compare against ppgtt->scratch_pt, and alloc_pt_scratch becomes
redundant. Initialize scratch_pt and pt. (Mika)

v10: Clean up aliasing ppgtt init error path and prevent leaking the
ppgtt obj when init fails. (Mika)
Updated commit author. (Daniel)

Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Michel Thierry <michel.thierry@intel.com> (v4+)
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Remove unnecessary gen6_ppgtt_unmap_pages
Michel Thierry [Tue, 24 Mar 2015 15:46:21 +0000 (15:46 +0000)]
drm/i915: Remove unnecessary gen6_ppgtt_unmap_pages

We are already unmapping them in gen6_ppgtt_free. This function became
redundant since commit 06fda602dbca9c59d87db7da71192e4b54c9f5ff
("drm/i915: Create page table allocators").

Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Fix i915_dma_map_single positive error code
Michel Thierry [Tue, 24 Mar 2015 17:06:33 +0000 (17:06 +0000)]
drm/i915: Fix i915_dma_map_single positive error code

i915_dma_map_single relies on dma_mapping_error, which returns positive
error codes. Found by static checker.

Introduced by commit 678d96fbb3b5995a2fdff2bca5e1ab4a40b7e968
("drm/i915: Track GEN6 page table usage").

v2: Return negative error code and renamed commit title. (Dan)
v3: Missing reported-by tag (Daniel)

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Prevent out of range pt in gen6_for_each_pde
Michel Thierry [Tue, 24 Mar 2015 15:46:19 +0000 (15:46 +0000)]
drm/i915: Prevent out of range pt in gen6_for_each_pde

Found by static analysis tool, this was harmless as the pt was not
used out of scope though.

Introduced by commit 678d96fbb3b5995a2fdff2bca5e1ab4a40b7e968
("drm/i915: Track GEN6 page table usage").

Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: fix definition of the DRM_IOCTL_I915_GET_SPRITE_COLORKEY ioctl
Tommi Rantala [Thu, 26 Mar 2015 19:47:16 +0000 (21:47 +0200)]
drm/i915: fix definition of the DRM_IOCTL_I915_GET_SPRITE_COLORKEY ioctl

Fix definition of the DRM_IOCTL_I915_GET_SPRITE_COLORKEY ioctl, so that it
is different from the DRM_IOCTL_I915_SET_SPRITE_COLORKEY ioctl.

Note that this is just for accuracy, the ioctl implementation itself is totally
unused and already ripped out.

Signed-off-by: Tommi Rantala <tt.rantala@gmail.com>
[danvet: Add note that this is a dead ioctl.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Rip out GET_SPRITE_COLORKEY ioctl
Daniel Vetter [Fri, 27 Mar 2015 08:08:04 +0000 (09:08 +0100)]
drm/i915: Rip out GET_SPRITE_COLORKEY ioctl

It's completely unused and Tommi noticed that the #define is borked
since forever. I've done a git search in userspace and only found
broken definitions and no users anywhere.

Cc: Tommi Rantala <tt.rantala@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
9 years agowatchdog: imgpdc: Fix default heartbeat
James Hogan [Fri, 20 Feb 2015 23:45:45 +0000 (23:45 +0000)]
watchdog: imgpdc: Fix default heartbeat

The IMG PDC watchdog driver heartbeat module parameter has no default so
it is initialised to zero. This results in the following warning during
probe:

imgpdc-wdt 2006000.wdt: Initial timeout out of range! setting max timeout

The module parameter description implies that the default value should
be PDC_WDT_DEF_TIMEOUT, which isn't yet used, so initialise it to that.

Also tweak the heartbeat module parameter description for consistency.

Fixes: 93937669e9b5 ("watchdog: ImgTec PDC Watchdog Timer Driver")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Cc: Naidu Tellapati <Naidu.Tellapati@imgtec.com>
Cc: Jude Abraham <Jude.Abraham@imgtec.com>
Cc: linux-watchdog@vger.kernel.org
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
9 years agowatchdog: imgpdc: Fix probe NULL pointer dereference
James Hogan [Fri, 20 Feb 2015 23:45:44 +0000 (23:45 +0000)]
watchdog: imgpdc: Fix probe NULL pointer dereference

The IMG PDC watchdog probe function calls pdc_wdt_stop() prior to
watchdog_set_drvdata(), causing a NULL pointer dereference when
pdc_wdt_stop() retrieves the struct pdc_wdt_dev pointer using
watchdog_get_drvdata() and reads the register base address through it.

Fix by moving the watchdog_set_drvdata() call earlier, to where various
other pdc_wdt->wdt_dev fields are initialised.

Fixes: 93937669e9b5 ("watchdog: ImgTec PDC Watchdog Timer Driver")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Cc: Naidu Tellapati <Naidu.Tellapati@imgtec.com>
Cc: Jude Abraham <Jude.Abraham@imgtec.com>
Cc: linux-watchdog@vger.kernel.org
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
9 years agowatchdog: mtk_wdt: signedness bug in mtk_wdt_start()
Dan Carpenter [Wed, 11 Feb 2015 10:26:21 +0000 (13:26 +0300)]
watchdog: mtk_wdt: signedness bug in mtk_wdt_start()

"ret" should be signed for the error handling to work correctly.  This
doesn't matter much in real life since mtk_wdt_set_timeout() always
succeeds.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
9 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Thu, 26 Mar 2015 22:04:05 +0000 (15:04 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm refcounting fixes from Dave Airlie:
 "Here is the complete set of i915 bug/warn/refcounting fixes"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/i915: Fixup legacy plane->crtc link for initial fb config
  drm/i915: Fix atomic state when reusing the firmware fb
  drm/i915: Keep ring->active_list and ring->requests_list consistent
  drm/i915: Don't try to reference the fb in get_initial_plane_config()
  drm: Fixup racy refcounting in plane_force_disable

9 years agoMerge tag 'dm-4.0-fix-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device...
Linus Torvalds [Thu, 26 Mar 2015 21:53:47 +0000 (14:53 -0700)]
Merge tag 'dm-4.0-fix-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper fix from Mike Snitzer:
 "Fix DM core device cleanup regression -- due to a latent race that was
  exposed by the bdi changes that were introduced during the 4.0 merge"

* tag 'dm-4.0-fix-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm: fix add_disk() NULL pointer due to race with free_dev()

9 years agoMerge tag 'linux-kselftest-4.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 26 Mar 2015 21:43:42 +0000 (14:43 -0700)]
Merge tag 'linux-kselftest-4.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fix from Shuah Khan.

* tag 'linux-kselftest-4.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: Fix build failures when invoked from kselftest target

9 years agoMerge tag 'drm-intel-fixes-2015-03-26' of git://anongit.freedesktop.org/drm-intel...
Dave Airlie [Thu, 26 Mar 2015 21:39:45 +0000 (07:39 +1000)]
Merge tag 'drm-intel-fixes-2015-03-26' of git://anongit.freedesktop.org/drm-intel into drm-fixes

This should cover the final warnings in -rc5 with two more backports
from our development branch (drm-intel-next-queued). They're the ones
from Daniel and Damien, with references to the reports.

This is on top of drm-fixes because of the dependency on the two earlier
fixes not yet in Linus' tree.

There's an additional regression fix from Chris.

* tag 'drm-intel-fixes-2015-03-26' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: Fixup legacy plane->crtc link for initial fb config
  drm/i915: Fix atomic state when reusing the firmware fb
  drm/i915: Keep ring->active_list and ring->requests_list consistent

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Thu, 26 Mar 2015 21:11:17 +0000 (14:11 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 fixes from Martin Schwidefsky:
 "A couple of bug fixes for s390.

  The ftrace comile fix is quite large for a -rc6 release, but it would
  be nice to have it in 4.0"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/smp: reenable smt after resume
  s390/mm: limit STACK_RND_MASK for compat tasks
  s390/ftrace: fix compile error if CONFIG_KPROBES is disabled
  s390/cpum_sf: add diagnostic sampling event only if it is authorized

9 years agodrm/i915: Don't use encoder->new_crtc in intel_lvds_compute_config()
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:14 +0000 (16:18 +0200)]
drm/i915: Don't use encoder->new_crtc in intel_lvds_compute_config()

Move towards atomic by using the legacy modeset's drm_atomic_state
instead.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Don't use staged config in intel_dp_mst_compute_config()
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:13 +0000 (16:18 +0200)]
drm/i915: Don't use staged config in intel_dp_mst_compute_config()

Move towards atomic by using the legacy modeset's drm_atomic_state
instead.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Use atomic state in intel_ddi_crtc_get_new_encoder()
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:12 +0000 (16:18 +0200)]
drm/i915: Use atomic state in intel_ddi_crtc_get_new_encoder()

Instead of using connector->new_encoder, get the same information from
the pipe_config, thus making the function ready for the atomic
conversion.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Don't depend on encoder->new_crtc in intel_hdmi_compute_config
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:11 +0000 (16:18 +0200)]
drm/i915: Don't depend on encoder->new_crtc in intel_hdmi_compute_config

Move towards atomic by using the legacy modeset's drm_atomic_state
instead.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Don't depend on encoder->new_crtc in intel_dp_compute_config()
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:10 +0000 (16:18 +0200)]
drm/i915: Don't depend on encoder->new_crtc in intel_dp_compute_config()

Move towards atomic by using the legacy modeset's drm_atomic_state
instead.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Don't use encoder->new_crtc in compute_baseline_pipe_bpp()
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:09 +0000 (16:18 +0200)]
drm/i915: Don't use encoder->new_crtc in compute_baseline_pipe_bpp()

Move towards atomic by using the legacy modeset's drm_atomic_state
instead.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
[danvet: Keep the if (!connector) continue; separate so that it's
easier to eventually extract a for_each_connector_in_state iterator.
And because of the upcast it's also safer.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Don't use encoder->new_crtc in intel_modeset_pipe_config()
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:08 +0000 (16:18 +0200)]
drm/i915: Don't use encoder->new_crtc in intel_modeset_pipe_config()

Move towards atomic by using the legacy modeset's drm_atomic_state
instead.

v2: Move call to drm_atomic_add_affected_connectors() to
    intel_modeset_compute_config(). (Daniel)

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
[danvet: Resurrect the ret local variable which I've dropped from an
earlier patch and which is now needed.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Copy the staged connector config to the legacy atomic state
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:07 +0000 (16:18 +0200)]
drm/i915: Copy the staged connector config to the legacy atomic state

With this in place, we can start converting pieces of the modeset code
to look at the connector atomic state instead of the staged config.

v2: Handle the load detect staged config changes too. (Ander)
    Remove unnecessary blank line. (Daniel)

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Update dummy connector atomic state with current config
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:05 +0000 (16:18 +0200)]
drm/i915: Update dummy connector atomic state with current config

Keep that state updated so that we can write code that depends on it on
the follow up patches.

v2: Fix BUG due to stale connector_state->crtc value. (Chandra)

v3: Update comment about dummy state connectors. (Chandra)
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Implement connector state duplication
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:06 +0000 (16:18 +0200)]
drm/i915: Implement connector state duplication

So that we can add connector states to the drm_atomic_state used in the
legacy modeset.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/skl: fix semicolon.cocci warnings
kbuild test robot [Thu, 26 Mar 2015 14:30:21 +0000 (22:30 +0800)]
drm/i915/skl: fix semicolon.cocci warnings

drivers/gpu/drm/i915/intel_pm.c:2913:4-5: Unneeded semicolon

 Removes unneeded semicolon.

Generated by: scripts/coccinelle/misc/semicolon.cocci

CC: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Allocate a crtc_state also when the crtc is being disabled
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:04 +0000 (16:18 +0200)]
drm/i915: Allocate a crtc_state also when the crtc is being disabled

For consistency, allocate a new crtc_state for a crtc that is being
disabled. Previously only the enabled value of the current state would
change.

v2: Rebase on v5 of previous patch. (Ander)

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
[danvet: Resolve rebase conflict.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Allocate a drm_atomic_state for the legacy modeset code
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:03 +0000 (16:18 +0200)]
drm/i915: Allocate a drm_atomic_state for the legacy modeset code

For the atomic conversion, the mode set paths need to be changed to rely
on an atomic state instead of using the staged config. By using an
atomic state for the legacy code, we will be able to convert the code
base in small chunks.

v2: Squash patch that adds stat argument to intel_set_mode(). (Ander)
    Make every caller of intel_set_mode() allocate state. (Daniel)
    Call drm_atomic_state_clear() in set config's error path. (Daniel)

v3: Copy staged config to atomic state in force restore path. (Ander)

v4: Don't update ->new_config for disabled pipes in __intel_set_mode(),
    since it is expected to be NULL in that case. (Ander)

v5: Don't change return type of intel_modeset_pipe_config(). (Chandra)

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
[danvet: Remove spurious ret local variable due to changes in v5.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Pass acquire ctx also to intel_release_load_detect_pipe()
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:02 +0000 (16:18 +0200)]
drm/i915: Pass acquire ctx also to intel_release_load_detect_pipe()

For now this is not necessary since intel_set_mode() doesn't acquire any
new locks. However, once that function is converted to atomic, that will
change, since we'll pass an atomic state to it, and that needs to have
the right acquire context set.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Add intel_atomic_get_crtc_state() helper function
Ander Conselvan de Oliveira [Fri, 20 Mar 2015 14:18:01 +0000 (16:18 +0200)]
drm/i915: Add intel_atomic_get_crtc_state() helper function

The pattern of getting the crtc state with drm_atomic_get_crtc_state()
and then converting it to intel_crtc_state will repeat quite often in
the following patches, so add a helper function to save some typing.

v2: Fix upcasting so that crtc_state base field could be moved. (Daniel)
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: always preserve bios swizzling
Daniel Vetter [Thu, 26 Mar 2015 11:42:24 +0000 (12:42 +0100)]
drm/i915: always preserve bios swizzling

Currently we only set preserve_bios_swizzling when the initial fb is
shared and totally miss the single-screen case. Fix this by
consolidating all the logic for both cases.

This seems to go back to when swizzle preservation was originally
merged in

commit d9ceb8163339134bd3ffb9fb87a0db4698283e32
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date:   Thu Oct 9 12:57:43 2014 -0700

    drm/i915: preserve swizzle settings if necessary v4

Cc: Kristian Høgsberg <hoegsberg@gmail.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
9 years agodrm/i915: Add initial_ prefix to bios fb takeover code
Daniel Vetter [Thu, 26 Mar 2015 11:17:05 +0000 (12:17 +0100)]
drm/i915: Add initial_ prefix to bios fb takeover code

In spirit with

commit 5724dbd1678e2f573b13f0688277941fad66cb88
Author: Damien Lespiau <damien.lespiau@intel.com>
Date:   Tue Jan 20 12:51:52 2015 +0000

    drm/i915: Rename plane_config to initial_plane_config

to make it clear that this code is all special-purpose for the initial
plane takeover.

Cc: Damien Lespiau <damien.lespiau@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
9 years agodrm/i915: Remove duplicated psr.active unset
Rodrigo Vivi [Wed, 25 Mar 2015 19:18:23 +0000 (12:18 -0700)]
drm/i915: Remove duplicated psr.active unset

psr.active is being unset out of the if so this here is useless and
duplicated.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Fixup legacy plane->crtc link for initial fb config
Daniel Vetter [Wed, 25 Mar 2015 17:30:38 +0000 (18:30 +0100)]
drm/i915: Fixup legacy plane->crtc link for initial fb config

This is a very similar bug in the load detect code fixed in

commit 9128b040eb774e04bc23777b005ace2b66ab2a85
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Tue Mar 3 17:31:21 2015 +0100

    drm/i915: Fix modeset state confusion in the load detect code

But this time around it was the initial fb code that forgot to update
the plane->crtc pointer. Otherwise it's the exact same bug, with the
exact same restrains (any set_config call/ioctl that doesn't disable
the pipe papers over the bug for free, so fairly hard to hit in normal
testing). So if you want the full explanation just go read that one
over there - it's rather long ...

Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Josh Boyer <jwboyer@fedoraproject.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Reported-and-tested-by: Josh Boyer <jwboyer@fedoraproject.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: kill i915.powersave
Rodrigo Vivi [Tue, 24 Mar 2015 19:40:09 +0000 (12:40 -0700)]
drm/i915: kill i915.powersave

This flag was being mostly used as a meta flag in some
cases and not covering other cases.

One of the risks is that it was masking some frontbuffer
trackings without disabling PSR.

So, better to kill this at once and avoid umbrella parameters.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Drop unused out: label to appease gcc.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Fixup legacy plane->crtc link for initial fb config
Daniel Vetter [Wed, 25 Mar 2015 17:30:38 +0000 (18:30 +0100)]
drm/i915: Fixup legacy plane->crtc link for initial fb config

This is a very similar bug in the load detect code fixed in

commit 9128b040eb774e04bc23777b005ace2b66ab2a85
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Tue Mar 3 17:31:21 2015 +0100

    drm/i915: Fix modeset state confusion in the load detect code

But this time around it was the initial fb code that forgot to update
the plane->crtc pointer. Otherwise it's the exact same bug, with the
exact same restrains (any set_config call/ioctl that doesn't disable
the pipe papers over the bug for free, so fairly hard to hit in normal
testing). So if you want the full explanation just go read that one
over there - it's rather long ...

Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Josh Boyer <jwboyer@fedoraproject.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Reported-and-tested-by: Josh Boyer <jwboyer@fedoraproject.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[Jani: backported to drm-intel-fixes for v4.0-rc]
Reference: http://mid.gmane.org/CA+5PVA7ChbtJrknqws1qvZcbrg1CW2pQAFkSMURWWgyASRyGXg@mail.gmail.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
9 years agodrm/i915: Fix atomic state when reusing the firmware fb
Damien Lespiau [Thu, 5 Feb 2015 19:24:25 +0000 (19:24 +0000)]
drm/i915: Fix atomic state when reusing the firmware fb

Right now, we get a warning when taking over the firmware fb:

  [drm:drm_atomic_plane_check] FB set but no CRTC

with the following backtrace:

  [<ffffffffa010339d>] drm_atomic_check_only+0x35d/0x510 [drm]
  [<ffffffffa0103567>] drm_atomic_commit+0x17/0x60 [drm]
  [<ffffffffa00a6ccd>] drm_atomic_helper_plane_set_property+0x8d/0xd0 [drm_kms_helper]
  [<ffffffffa00f1fed>] drm_mode_plane_set_obj_prop+0x2d/0x90 [drm]
  [<ffffffffa00a8a1b>] restore_fbdev_mode+0x6b/0xf0 [drm_kms_helper]
  [<ffffffffa00aa969>] drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x80 [drm_kms_helper]
  [<ffffffffa00aa9e2>] drm_fb_helper_set_par+0x22/0x50 [drm_kms_helper]
  [<ffffffffa050a71a>] intel_fbdev_set_par+0x1a/0x60 [i915]
  [<ffffffff813ad444>] fbcon_init+0x4f4/0x580

That's because we update the plane state with the fb from the firmware, but we
never associate the plane to that CRTC.

We don't quite have the full DRM take over from HW state just yet, so
fake enough of the plane atomic state to pass the checks.

v2: Fix the state on which we set the CRTC in the case we're sharing the
    initial fb with another pipe. (Matt)

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[Jani: backported to drm-intel-fixes for v4.0-rc]
Reference: http://mid.gmane.org/CA+5PVA7yXH=U757w8V=Zj2U1URG4nYNav20NpjtQ4svVueyPNw@mail.gmail.com
Reference: http://lkml.kernel.org/r/CA+55aFweWR=nDzc2Y=rCtL_H8JfdprQiCimN5dwc+TgyD4Bjsg@mail.gmail.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
9 years agoALSA: hda - Add one more node in the EAPD supporting candidate list
Hui Wang [Thu, 26 Mar 2015 09:14:55 +0000 (17:14 +0800)]
ALSA: hda - Add one more node in the EAPD supporting candidate list

We have a HP machine which use the codec node 0x17 connecting the
internal speaker, and from the node capability, we saw the EAPD,
if we don't set the EAPD on for this node, the internal speaker
can't output any sound.

Cc: <stable@vger.kernel.org>
BugLink: https://bugs.launchpad.net/bugs/1436745
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
9 years agoclocksource/drivers/sun5i: Fix cpufreq interaction with sched_clock()
Maxime Ripard [Thu, 26 Mar 2015 09:27:09 +0000 (10:27 +0100)]
clocksource/drivers/sun5i: Fix cpufreq interaction with sched_clock()

The sun5i timer is used as the sched-clock on certain systems, and ever
since we started using cpufreq, the cpu clock (that is one of the
timer's clock indirect parent) now changes as well, along with the
actual sched_clock() rate.

This is not accurate and not desirable.

We can safely remove the sun5i sched-clock on those systems, since we
have other reliable sched_clock() sources in the system.

Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
[ Improved the changelog. ]
Cc: richard@nod.at
Link: http://lkml.kernel.org/r/1427362029-6511-4-git-send-email-daniel.lezcano@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agoclocksource/drivers: Fix various !CONFIG_HAS_IOMEM build errors
Richard Weinberger [Thu, 26 Mar 2015 09:27:06 +0000 (10:27 +0100)]
clocksource/drivers: Fix various !CONFIG_HAS_IOMEM build errors

Fix !CONFIG_HAS_IOMEM related build failures in three clocksource drivers.

The build failures have the pattern of:

  drivers/clocksource/sh_cmt.c: In function ‘sh_cmt_map_memory’: drivers/clocksource/sh_cmt.c:920:2:
  error: implicit declaration of function ‘ioremap_nocache’ [-Werror=implicit-function-declaration]   cmt->mapbase = ioremap_nocache(mem->start, resource_size(mem));

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: maxime.ripard@free-electrons.com
Link: http://lkml.kernel.org/r/1427362029-6511-1-git-send-email-daniel.lezcano@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agodrm/i915: Keep ring->active_list and ring->requests_list consistent
Chris Wilson [Wed, 18 Mar 2015 18:19:22 +0000 (18:19 +0000)]
drm/i915: Keep ring->active_list and ring->requests_list consistent

If we retire requests last, we may use a later seqno and so clear
the requests lists without clearing the active list, leading to
confusion. Hence we should retire requests first for consistency with
the early return. The order used to be important as the lifecycle for
the object on the active list was determined by request->seqno. However,
the requests themselves are now reference counted removing the
constraint from the order of retirement.

Fixes regression from

commit 1b5a433a4dd967b125131da42b89b5cc0d5b1f57
Author: John Harrison <John.C.Harrison@Intel.com>
Date:   Mon Nov 24 18:49:42 2014 +0000

    drm/i915: Convert 'i915_seqno_passed' calls into 'i915_gem_request_completed
'

and a

WARNING: CPU: 0 PID: 1383 at drivers/gpu/drm/i915/i915_gem_evict.c:279 i915_gem_evict_vm+0x10c/0x140()
WARN_ON(!list_empty(&vm->active_list))

Identified by updating WATCH_LISTS:

[drm:i915_verify_lists] *ERROR* blitter ring: active list not empty, but no requests
WARNING: CPU: 0 PID: 681 at drivers/gpu/drm/i915/i915_gem.c:2751 i915_gem_retire_requests_ring+0x149/0x230()
WARN_ON(i915_verify_lists(ring->dev))

Note that this is only a problem in evict_vm where the following happens
after a retire_request has cleaned out all requests, but not all active
bo:
- intel_ring_idle called from i915_gpu_idle notices that no requests are
  outstanding and immediately returns.
- i915_gem_retire_requests_ring called from i915_gem_retire_requests also
  immediately returns when there's no request, still leaving the bo on the
  active list.
- evict_vm hits the WARN_ON(!list_empty(&vm->active_list)) after evicting
  all active objects that there's still stuff left that shouldn't be
  there.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: John Harrison <John.C.Harrison@Intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
9 years agoALSA: hda_intel: apply the Seperate stream_tag for Sunrise Point
Libin Yang [Thu, 26 Mar 2015 05:28:39 +0000 (13:28 +0800)]
ALSA: hda_intel: apply the Seperate stream_tag for Sunrise Point

The total stream number of Sunrise Point's input and output stream
exceeds 15, which will cause some streams do not work because
of the overflow on SDxCTL.STRM field if using the legacy
stream tag allocation method.

This patch uses the new stream tag allocation method by add
the flag AZX_DCAPS_SEPARATE_STREAM_TAG for Skylake platform.

Signed-off-by: Libin Yang <libin.yang@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
9 years agoARC: signal handling robustify
Vineet Gupta [Thu, 26 Mar 2015 05:44:41 +0000 (11:14 +0530)]
ARC: signal handling robustify

A malicious signal handler / restorer can DOS the system by fudging the
user regs saved on stack, causing weird things such as sigreturn returning
to user mode PC but cpu state still being kernel mode....

Ensure that in sigreturn path status32 always has U bit; any other bogosity
(gargbage PC etc) will be taken care of by normal user mode exceptions mechanisms.

Reproducer signal handler:

    void handle_sig(int signo, siginfo_t *info, void *context)
    {
ucontext_t *uc = context;
struct user_regs_struct *regs = &(uc->uc_mcontext.regs);

regs->scratch.status32 = 0;
    }

Before the fix, kernel would go off to weeds like below:

    --------->8-----------
    [ARCLinux]$ ./signal-test
    Path: /signal-test
    CPU: 0 PID: 61 Comm: signal-test Not tainted 4.0.0-rc5+ #65
    task: 8f177880 ti: 5ffe6000 task.ti: 8f15c000

    [ECR   ]: 0x00220200 => Invalid Write @ 0x00000010 by insn @ 0x00010698
    [EFA   ]: 0x00000010
    [BLINK ]: 0x2007c1ee
    [ERET  ]: 0x10698
    [STAT32]: 0x00000000 :                                   <--------
    BTA: 0x00010680  SP: 0x5ffe7e48  FP: 0x00000000
    LPS: 0x20003c6c LPE: 0x20003c70 LPC: 0x00000000
    ...
    --------->8-----------

Reported-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>