Commit Graph

9557 Commits

Author SHA1 Message Date
Alex Deucher
0363a55972 drm/radeon: remove unused blit remnants from si.c
We use the DMA ring rather than the GFX ring for
bo moves.  This code was never used and commented out.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-04-09 10:31:39 -04:00
Christian König
9a21059dc4 drm/radeon: add UVD tiling addr config v2
v2: set UVD tiling config for rv730

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
2013-04-09 10:31:39 -04:00
Christian König
ec5891fbe1 drm/radeon: init UVD clocks to sane defaults
Just until we get proper DPM for that.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-04-09 10:31:38 -04:00
Christian König
ef0e6e657c drm/radeon: add set_uvd_clocks callback for r7xx v3
v2: avoid 64bit divide
v3: rv740 uses the evegreen upll configuration

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
2013-04-09 10:31:37 -04:00
Christian König
2539eb02de drm/radeon: add set_uvd_clocks callback for SI
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-04-09 10:31:37 -04:00
Alex Deucher
a8b4925c79 drm/radeon: add set_uvd_clocks callback for evergreen
v2: remove unneeded register definitions

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-04-09 10:31:36 -04:00
Alex Deucher
23d33ba32b drm/radeon: add set_uvd_clocks callback for ON/LN/TN (v4)
v2: write clk registers only once!
v3: update cg scratch register properly
v4: add TN support

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-04-09 10:31:35 -04:00
Christian König
7062ab67d4 drm/radeon: add radeon_atom_get_clock_dividers helper
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-04-09 10:31:35 -04:00
Alex Deucher
73afc70d11 drm/radeon: add pm callback for setting uvd clocks
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-04-09 10:31:34 -04:00
Christian König
f2ba57b5ea drm/radeon: UVD bringup v8
Just everything needed to decode videos using UVD.

v6: just all the bugfixes and support for R7xx-SI merged in one patch
v7: UVD_CGC_GATE is a write only register, lockup detection fix
v8: split out VRAM fallback changes, remove support for RV770,
    add support for HEMLOCK, add buffer sizes checks

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-04-09 10:31:33 -04:00
Christian König
4474f3a91f drm/radeon: rework fallback handling v2
Let the CS module decide if we can fall back to VRAM or not.

v2: remove unintended change

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-04-09 10:31:33 -04:00
Christian König
574490401d drm/radeon: UVD doesn't needs VM on SI v2
v2: update error message and comment

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-04-09 10:31:32 -04:00
Samuel Li
a0a53aa8c7 drm/radeon: Use direct mapping for fast fb access on RS690
This patch allows the CPU to map the stolen vram segment
directly rather than going through the PCI BAR.  This
significantly improves performance for certain workloads with
a properly patched ddx.

Use radeon.fastfb=1 to enable it (disabled by default).
Currently only supported on RS690, but support for RS780/880
and newer APUs may be added eventually.

Signed-off-by: Samuel Li <samuel.li@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-04-09 10:31:31 -04:00
Alex Deucher
7c1c7c18fc drm/radeon/dce6: add missing display reg for tiling setup
A new tiling config register for the display blocks was
added on DCE6.

May fix:
https://bugs.freedesktop.org/show_bug.cgi?id=62889
https://bugs.freedesktop.org/show_bug.cgi?id=57919

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2013-04-09 10:23:50 -04:00
Alex Deucher
9ed8b1f93c drm/radeon: clean up vram/gtt location handling
Add a per-asic MC (memory controller) mask which holds the
mak address mask the asic is capable of.  Use this when
calculating the vram and gtt locations rather using asic
specific functions or limiting everything to 32 bits.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-04-09 10:23:50 -04:00
Alex Deucher
367cbe2fec drm/radeon: fix typo in rv515_mc_resume()
Doesn't affect anything as the same address gets written
in both cases.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2013-04-08 11:07:08 -04:00
Alex Deucher
411678288d drm/radeon: use frac fb div on RS780/RS880
Monitors seem to prefer it.  Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=37696

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2013-04-01 16:06:25 -04:00
Alex Deucher
bf05d99851 drm/radeon: don't use get_engine_clock() on APUs
It doesn't work reliably.  Just report back the currently
selected engine clock.

Partially fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=62493

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2013-04-01 15:23:58 -04:00
Dave Airlie
7ac8833f59 Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into HEAD
Daniel writes:
"Just three revert/disable by default patches, one of them cc: stable
(since the offending commit was cc: stable, too)."

* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
  Revert "drm/i915: write backlight harder"
  drm/i915: don't disable the power well yet
  Revert "drm/i915: set TRANSCODER_EDP even earlier"
2013-03-25 12:20:00 +10:00
Dave Airlie
ac165b006b Merge branch 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into HEAD
Inki writes:
Includes bug fixes and code cleanups.
And it considers some restrictions to G2D hardware.
With this, the malfunction and page fault issues to g2d driver
would be fixed.

* 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
  drm/exynos: Check g2d cmd list for g2d restrictions
  drm/exynos: Add a new function to get gem buffer size
  drm/exynos: Deal with g2d buffer info more efficiently
  drm/exynos: Clean up some G2D codes for readability
  drm/exynos: Fix G2D core malfunctioning issue
  drm/exynos: clear node object type at gem unmap
  drm/exynos: Fix error routine to getting dma addr.
  drm/exynos: Replaced kzalloc & memcpy with kmemdup
  drm/exynos: fimd: calculate the correct address offset
  drm/exynos: Make mixer_check_timing static
  drm/exynos: modify the compatible string for exynos fimd
2013-03-25 12:19:10 +10:00
Daniel Vetter
b1289371fc Revert "drm/i915: write backlight harder"
This reverts commit cf0a6584aa.

Turns out that cargo-culting breaks systems. Note that we can't revert
further, since

commit 770c12312a
Author: Takashi Iwai <tiwai@suse.de>
Date:   Sat Aug 11 08:56:42 2012 +0200

    drm/i915: Fix blank panel at reopening lid

fixed a regression in 3.6-rc kernels for which we've never figured out
the exact root cause. But some further inspection of the backlight
code reveals that it's seriously lacking locking. And especially the
asle backlight update is know to get fired (through some smm magic)
when writing specific backlight control registers. So the possibility
of suffering from races is rather real.

Until those races are fixed I don't think it makes sense to try
further hacks. Which sucks a bit, but sometimes that's how it is :(

References: http://www.mail-archive.com/intel-gfx@lists.freedesktop.org/msg18788.html
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=47941
Tested-by: Takashi Iwai <tiwai@suse.de>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: stable@vger.kernel.org (the reverted commit was cc: stable, too)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-03-24 13:23:20 +01:00
Paulo Zanoni
2124b72e62 drm/i915: don't disable the power well yet
We're still not 100% ready to disable the power well, so don't disable
it for now. When we disable it we break the audio driver (because some
of the audio registers are on the power well) and machines with eDP on
port D (because it doesn't use TRANSCODER_EDP).

Also, instead of just reverting the code, add a Kernel option to let
us disable it if we want. This will allow us to keep developing and
testing the feature while it's not enabled.

This fixes problems caused by the following commit:
  commit d6dd9eb1d9
  Author: Daniel Vetter <daniel.vetter@ffwll.ch>
  Date:   Tue Jan 29 16:35:20 2013 -0200
       drm/i915: dynamic Haswell display power well support

References: http://www.mail-archive.com/intel-gfx@lists.freedesktop.org/msg18788.html
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-03-24 13:22:33 +01:00
Daniel Vetter
bba2181c49 Revert "drm/i915: set TRANSCODER_EDP even earlier"
This reverts commit cc464b2a17.

The reason is that Takashi Iwai reported a regression bisected to this
commit:

http://www.mail-archive.com/intel-gfx@lists.freedesktop.org/msg18788.html

His machine has eDP on port D (usual desktop all-in-on setup), which
intel_dp.c identifies as an eDP panel, but the hsw ddi code
mishandles.

Closer inspection of the code reveals that haswell_crtc_mode_set also
checks intel_encoder_is_pch_edp when setting is_cpu_edp. On haswell
that doesn't make much sense (since there's no edp on the pch), but
what this function _really_ checks is whether that edp connector is on
port A or port D. It's just that on ilk-ivb port D was on the pch ...

So that explains why this seemingly innocent change killed eDP on port
D. Furthermore it looks like everything else accidentally works, since
we've never enabled eDP on port D support for hsw intentionally (e.g.
we still register the HDMI output for port D in that case).

But in retrospective I also don't like that this leaks highly platform
specific details into common code, and the reason is that the drm
vblank layer sucks. So instead I think we should:
- move the cpu_transcoder into the dynamic pipe_config tracking (once
  that's merged).
- fix up the drm vblank layer to finally deal with kms crtc objects
  instead of int pipes.

v2: Pimp commit message with the better diagnosis as discussed with
Paulo on irc.

Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-03-24 13:22:32 +01:00
Torsten Duwe
c19b3b0f6e KMS: fix EDID detailed timing frame rate
When KMS has parsed an EDID "detailed timing", it leaves the frame rate
zeroed.  Consecutive (debug-) output of that mode thus yields 0 for
vsync.  This simple fix also speeds up future invocations of
drm_mode_vrefresh().

While it is debatable whether this qualifies as a -stable fix I'd apply
it for consistency's sake; drm_helper_probe_single_connector_modes()
does the same thing already for all probed modes.

Cc: stable@vger.kernel.org
Signed-off-by: Torsten Duwe <duwe@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-03-23 10:46:10 -07:00
Torsten Duwe
16dad1d743 KMS: fix EDID detailed timing vsync parsing
EDID spreads some values across multiple bytes; bit-fiddling is needed
to retrieve these.  The current code to parse "detailed timings" has a
cut&paste error that results in a vsync offset of at most 15 lines
instead of 63.

See

   http://en.wikipedia.org/wiki/EDID

and in the "EDID Detailed Timing Descriptor" see bytes 10+11 show why
that needs to be a left shift.

Cc: stable@vger.kernel.org
Signed-off-by: Torsten Duwe <duwe@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-03-23 10:46:10 -07:00
Dave Airlie
b56fb70870 Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-next
Daniel writes:
Bunch of fixes, all pretty high-priority
- Fix execbuf argument checking (Kees Cook)
- Optionally obfuscate kernel addresses in dumps (Kees Cook)
- Two patches from Takashi Iwai to fix DP link training regressions he's
  seen.
- intel-gfx is no longer subscribers-only (well, just no longer moderated
  in an annoying way for non-subscribers), update MAINTAINERS
- gm45 gmbus irq fallout fix (Jiri Kosina)

* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
  drm/i915: stop using GMBUS IRQs on Gen4 chips
  MAINTAINERS: intel-gfx is no longer subscribers-only
  drm/i915: Use the fixed pixel clock for eDP in intel_dp_set_m_n()
  Revert "drm/i915: try to train DP even harder"
  drm/i915: bounds check execbuffer relocation count
  drm/i915: restrict kernel address leak in debugfs
2013-03-21 10:17:38 +10:00
Julia Lemire
260b3f1291 drm/mgag200: Bug fix: Modified pll algorithm for EH project
While testing the mgag200 kms driver on the HP ProLiant Gen8, a
bug was seen.  Once the bootloader would load the selected kernel,
the screen would go black.  At first it was assumed that the
mgag200 kms driver was hanging.  But after setting up the grub
serial output, it was seen that the driver was being loaded
properly.  After trying serval monitors, one finaly displayed
the message "Frequency Out of Range".  By comparing the kms pll
algorithm with the previous mgag200 xorg driver pll algorithm,
discrepencies were found.  Once the kms pll algorithm was
modified, the expected pll values were produced.  This fix was
tested on several monitors of varying native resolutions.

Signed-off-by: Julia Lemire <jlemire@matrox.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-03-21 10:16:58 +10:00
YoungJun Cho
2dec17c70e drm/exynos: Check g2d cmd list for g2d restrictions
This patch checks command list from user for g2d restrictions.

For now, g2d driver wasn't considered for G2D hardware restrictions
properly. The below is the restrictions to G2D hardware and this patch
considers them.
    - width or height value in the command list
	has to be in valid range (1 to 8000 pixels)
    - The requested area should be less than buffer size.
    - right has to be bigger than left.
    - bottom has to be bigger than top.

Changelog v2:
- Fix merge conflict.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2013-03-20 19:09:11 +09:00
Inki Dae
a4f19aaab3 drm/exynos: Add a new function to get gem buffer size
This patch adds a new function to get gem buffer size. And this
funtion could be used for g2d driver or others can get gem buffer
size to check if the buffer is valid or not.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <inki.dae@samsung.com>
2013-03-20 19:09:11 +09:00
YoungJun Cho
9963cb6ef9 drm/exynos: Deal with g2d buffer info more efficiently
This patch adds g2d_buf_info structure and buffer relevant
variables moves into the g2d_buf_info to manage g2d buffer
information more efficiently.

Changelog v2:
- Fix merge conflict.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2013-03-20 19:09:11 +09:00
YoungJun Cho
f3d2fc4a73 drm/exynos: Clean up some G2D codes for readability
This patch just cleans up G2D codes for readability.

For this, it changes the member of g2d_cmdlist_node, obj_type into
buf_type.

Changelog v2:
- Revert irrelevant codes.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2013-03-20 19:09:10 +09:00
YoungJun Cho
7ad018140c drm/exynos: Fix G2D core malfunctioning issue
This patch fixes G2D core malfunctioning issue once g2d dma is started.
Without 'DMA_HOLD_CMD_REG' register setting, there is only one interrupt
after the execution to all command lists have been completed. And that
induces watchdog. So this patch sets 'LIST_HOLD' command to the register
so that command execution interrupt can be occured whenever each command
list execution is finished.

Changelog v2:
- Consider for interrupt setup to each command list and all command lists
  And correct typo.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2013-03-20 19:09:10 +09:00
YoungJun Cho
5efc1d1b53 drm/exynos: clear node object type at gem unmap
This patch clears node object type in G2D unmap cmdlist.
The obj_type of cmdlist node has to be cleared in
g2d_unmap_cmdlist_gem() so that the node can be reused
in g2d_map_cmdlist_gem().

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2013-03-20 19:09:10 +09:00
YoungJun Cho
067ed3311f drm/exynos: Fix error routine to getting dma addr.
This patch fixes error routine when g2d_userptr_get_dma_add is failed.
When sg_alloc_table_from_pages() is failed, it doesn't call
sg_free_table() anymore.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2013-03-20 19:09:10 +09:00
Alexandru Gheorghiu
e2779e1698 drm/exynos: Replaced kzalloc & memcpy with kmemdup
Replaced calls to kzalloc followed by memcpy with call to kmemdup.
Patch found using coccinelle.

Signed-off-by: Alexandru Gheorghiu <gheorghiuandru@gmail.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-03-20 19:09:10 +09:00
Leela Krishna Amudala
0f10cf1463 drm/exynos: fimd: calculate the correct address offset
Calculate the correct address offset values for alpha and color key
control registers based on exynos4 and exynos5 user manuals.
Also remove VIDOSD_C_SIZE_W0 macro and fix comments about registers for
size and alpha.

Signed-off-by: Leela Krishna Amudala <l.krishna@samsung.com>
Acked-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-03-20 19:09:10 +09:00
Sachin Kamat
9800935a21 drm/exynos: Make mixer_check_timing static
Fixes the following sparse warning:
drivers/gpu/drm/exynos/exynos_mixer.c:821:5: warning:
symbol 'mixer_check_timing' was not declared. Should it be static?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-03-20 19:09:10 +09:00
Vikas Sajjan
5830daf817 drm/exynos: modify the compatible string for exynos fimd
modified compatible string for exynos4 fimd as "exynos4210-fimd" and
exynos5 fimd as "exynos5250-fimd" to stick to the rule that compatible
value should be named after first specific SoC model in which this
particular IP version was included as discussed at
https://patchwork.kernel.org/patch/2144861/

Signed-off-by: Vikas Sajjan <vikas.sajjan@linaro.org>
Acked-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-03-20 19:09:09 +09:00
Dave Airlie
236f651bf7 Merge branch 'drm-fixes-3.9' of git://people.freedesktop.org/~agd5f/linux into drm-next
Alex writes:
"Mostly just small bug fixes.  Big change is new pci ids
for Richland APUs."

* 'drm-fixes-3.9' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: add Richland pci ids
  drm/radeon: add support for Richland APUs
  drm/radeon/benchmark: allow same domains for dma copy
  drm/radeon/benchmark: make sure bo blit copy exists before using it
  drm/radeon: fix backend map setup on 1 RB trinity boards
  drm/radeon: fix S/R on VM systems (cayman/TN/SI)
2013-03-20 16:27:05 +10:00
Dave Airlie
cf9a625fae Merge branch 'drm-nouveau-fixes-3.9' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next
Lots of thermal fixes and fix a lockdep warning we've been seeing.

* 'drm-nouveau-fixes-3.9' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
  drm/nv50/kms: prevent lockdep false-positive in page flipping path
  drm/nouveau/core: fix return value of nouveau_object_del()
  drm/nouveau/hwmon: do not expose a buggy temperature if it is unavailable
  drm/nouveau/therm: display the availability of the internal sensor
  drm/nouveau/therm: disable temperature management if the sensor isn't readable
  drm/nouveau/therm: disable auto fan management if temperature is not available
  drm/nv40/therm: reserve negative temperatures for errors
  drm/nv40/therm: disable temperature reading if the bios misses some parameters
  drm/nouveau/therm-ic: the temperature is off by sensor_constant, warn the user
  drm/nouveau/therm: remove some confusion introduced by therm_mode
  drm/nouveau/therm: do not make assumptions on temperature
  drm/nv40/therm: increase the sensor's settling delay to 20ms
  drm/nv40/therm: improve selection between the old and the new style
2013-03-20 16:10:18 +10:00
Jiri Kosina
c12aba5aa0 drm/i915: stop using GMBUS IRQs on Gen4 chips
Commit 28c70f162 ("drm/i915: use the gmbus irq for waits") switched to
using GMBUS irqs instead of GPIO bit-banging for chipset generations 4
and above.

It turns out though that on many systems this leads to spurious interrupts
being generated, long after the register write to disable the IRQs has been
issued.

Typically this results in the spurious interrupt source getting
disabled:

[    9.636345] irq 16: nobody cared (try booting with the "irqpoll" option)
[    9.637915] Pid: 4157, comm: ifup Tainted: GF            3.9.0-rc2-00341-g0863702 #422
[    9.639484] Call Trace:
[    9.640731]  <IRQ>  [<ffffffff8109b40d>] __report_bad_irq+0x1d/0xc7
[    9.640731]  [<ffffffff8109b7db>] note_interrupt+0x15b/0x1e8
[    9.640731]  [<ffffffff810999f7>] handle_irq_event_percpu+0x1bf/0x214
[    9.640731]  [<ffffffff81099a88>] handle_irq_event+0x3c/0x5c
[    9.640731]  [<ffffffff8109c139>] handle_fasteoi_irq+0x7a/0xb0
[    9.640731]  [<ffffffff8100400e>] handle_irq+0x1a/0x24
[    9.640731]  [<ffffffff81003d17>] do_IRQ+0x48/0xaf
[    9.640731]  [<ffffffff8142f1ea>] common_interrupt+0x6a/0x6a
[    9.640731]  <EOI>  [<ffffffff8142f952>] ? system_call_fastpath+0x16/0x1b
[    9.640731] handlers:
[    9.640731] [<ffffffffa000d771>] usb_hcd_irq [usbcore]
[    9.640731] [<ffffffffa0306189>] yenta_interrupt [yenta_socket]
[    9.640731] Disabling IRQ #16

The really curious thing is now that irq 16 is _not_ the interrupt for
the i915 driver when using MSI, but it _is_ the interrupt when not
using MSI. So by all indications it seems like gmbus is able to
generate a legacy (shared) interrupt in MSI mode on some
configurations. I've tried to reproduce this and the differentiating
thing seems to be that on unaffected systems no other device uses irq
16 (which seems to be the non-MSI intel gfx interrupt on all gm45).

I have no idea how that even can happen.

To avoid tempting this elephant into a rage, just disable gmbus
interrupt support on gen 4.

v2: Improve the commit message with exact details of what's going on.
Also add a comment in the code to warn against this particular
elephant in the room.

v3: Move the comment explaing how gen4 blows up next to the definition
of HAS_GMBUS_IRQ to keep the code-flow straight. Suggested by Chris
Wilson.

Signed-off-by: Jiri Kosina <jkosina@suse.cz> (v1)
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
References: https://lkml.org/lkml/2013/3/8/325
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-03-20 00:03:16 +01:00
Ben Skeggs
f60b6e7a60 drm/nv50/kms: prevent lockdep false-positive in page flipping path
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-19 15:26:38 +10:00
Ben Skeggs
4fa133954e drm/nouveau/core: fix return value of nouveau_object_del()
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-19 15:26:30 +10:00
Takashi Iwai
9d1a455b0c drm/i915: Use the fixed pixel clock for eDP in intel_dp_set_m_n()
The eDP output on HP Z1 is still broken when X is started even after
fixing the infinite link-train loop.  The regression was introduced in
3.6 kernel for cleaning up the mode clock handling code in intel_dp.c
by the commit [71244653: drm/i915: adjusted_mode->clock in the dp
mode_fix].

In the past, the clock of the reference mode was modified in
intel_dp_mode_fixup() in the case of eDP fixed clock, and this clock was
used for calculating in intel_dp_set_m_n().  This override was removed,
thus the wrong mode clock is used for the calculation, resulting in a
psychedelic smoking output in the end.

This patch corrects the clock to be used in the place.

v1->v2: Use intel_edp_target_clock() for checking eDP fixed clock
instead of open code as in ironlake_set_m_n().

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-03-18 11:25:36 +01:00
Martin Peres
804ca90f3f drm/nouveau/hwmon: do not expose a buggy temperature if it is unavailable
Signed-off-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-18 11:15:27 +10:00
Martin Peres
0b3ee3772e drm/nouveau/therm: display the availability of the internal sensor
Signed-off-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-18 11:15:27 +10:00
Martin Peres
bf55eb843d drm/nouveau/therm: disable temperature management if the sensor isn't readable
Signed-off-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-18 11:15:27 +10:00
Martin Peres
98ee7c7c63 drm/nouveau/therm: disable auto fan management if temperature is not available
Signed-off-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-18 11:15:27 +10:00
Martin Peres
76c0295c38 drm/nv40/therm: reserve negative temperatures for errors
Signed-off-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-18 11:15:27 +10:00
Martin Peres
ad40d73ef5 drm/nv40/therm: disable temperature reading if the bios misses some parameters
Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-18 11:15:27 +10:00