Daniel writes:
As promised a stash of (mostly) fixes. Two pieces of non-fixes included:
- A notch more gtt refactoring from Ben, beating to death with igt in our
nightly testing.
- Support for display display-less server chips (again from Ben). New hw
support which is only likely to break itself ;-)
Otherwise just tons of fixes:
- hpd irq storm mitigation from Egbert Eich. Your -next tree already has
the infrastructure, this here just supplies the logic.
- sdvo hw state check fix from Egbert Eich
- fb cb tune settings for the pch pll clocks on cpt/ppt
- "Bring a bigger gun" coherence workaround for multi-threade, mulit-core
& thrashing tiled gtt cpu access from Chris.
- Update haswell mPHY code.
- l3$ caching for context objects on ivb/hsw (Chris).
- dp aux refclock fix for haswell (Jani)
- moar overclocking fixes for snb/ivb (Ben)
- ecobits ppgtt pte caching control fixes from Ville
- fence stride check fixes and limit improvements (Ville)
- fix up crtc force restoring, potentially resulting in tons of hw state
check WARNs
- OOPS fix for NULL derefencing of fb pointers when force-restoring a crtc
when other crtcs are disabled and the force-restored crtc is _not_ the
first one.
- Fix pfit disabling on gen2/3.
- Haswell ring freq scaling fixes (Chris).
- backlight init/teardown fix (failed eDP init killed the lvds backlight)
from Jani
- cpt/ppt fdi polarity fixes from Paulo (should help a lot of the FDI link
train failures).
- And a bunch of smaller things all over.
* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel: (56 commits)
drm/i915: fix bpc vs. bpp confusion in intel_crtc_compute_config
drm/i915: move cpu_transcoder to the pipe configuration
drm/i915: preserve the PBC bits of TRANS_CHICKEN2
drm/i915: set CPT FDI RX polarity bits based on VBT
drm/i915: Add Reenable Timer to turn Hotplug Detection back on (v4)
drm/i915: Disable HPD interrupt on pin when irq storm is detected (v3)
drm/i915: Mask out the HPD irq bits before setting them individually.
drm/i915: (re)init HPD interrupt storm statistics
drm/i915: Add HPD IRQ storm detection (v5)
drm/i915: WARN when LPT-LP is not paired with ULT CPU
drm/i915: don't intel_crt_init on any ULT machines
drm/i915: remove comment about IVB link training from intel_pm.c
drm/i915: VLV doesn't have LLC
drm/i915: Scale ring, rather than ia, frequency on Haswell
drm/i915: shorten debugfs output simple attributes
drm/i915: Fixup pfit disabling for gen2/3
drm/i915: Fixup Oops in the pipe config computation
drm/i915: ensure single initialization and cleanup of backlight device
drm/i915: don't touch the PF regs if the power well is down
drm/i915: add intel_using_power_well
...
When an encoder is shared on several connectors there is only
one hotplug line, thus this line needs to be shared among these
connectors.
If HPD detect only works reliably on a subset of those connectors,
we want to poll the others. Thus we need to make sure that storm
detection doesn't mess up the settings for those connectors.
Therefore we store the settings in the intel_connector struct and
restore them from there.
If nothing is set but the encoder has a hpd_pin set we assume this
connector is hotplug capable.
On init/reset we make sure the polled state of the connectors
is (re)set to the default value, the HPD interrupts are marked
enabled.
Signed-off-by: Egbert Eich <eich@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel writes:
Since I expect Linus to open the merge window in about a week I guess this
is the last i915 feature pull for 3.10. Highlights:
Updated testing tree for -next. Highlights:
- Corner case fixes discovered with static analyzers (Damien).
- More fixes to combat unclaimed register errors on Haswell (Paulo).
- Some small fixes to the gpu turbo code (Rodrigo+Ben), Ben has more
fixes for overclocking support pending.
- More prep work for fastboot from Chris.
- VT-switchless suspend/resume from Jesse.
- The prep work of Egbert Eich's hpd irq storm handling. Hopefully we can
squeeze in the actual storm handling code for 3.10 ...
- More convenience helpers for Imre's sg iterator. Core parts acked by
Andrew Morton.
- A bit of backlight code cleanup from Jani.
- Fixed ilk gpu reset (Jesse).
- Reduced color range handling fixes for VLV (Ville).
The big item here is though the introduction of pipe_config to properly
pre-compute the desired modeset state before touching the hw. Together
with some very basic support to read out the current config from the hw
and compare the state with the sw tracking. This is all prep work for more
reliable fastboot, atomic modesets and other cool features. Stuff
converted to the new world includes:
- Most simple pipe attributes (reduce color range, pixel multiplier).
- Pipe bpp/dither handling.
- Some convenience flags like ->has_pch_encoder to simplify the code flow.
- (Almost) DP clock handling, had to be reverted since part of a prep
patch was lost in rebasing ...
Expect a lot of patches for this throughout 3.11, there's tons of work
till we have all state properly tracked for fastbooting to woExpect a lot
of patches for this throughout 3.11, there's tons of work till we have all
state properly tracked for fastbooting to work.
For 3.10 I have a bunch of fixes queued up and I plan to send them all out
at the end of this week. I need to shuffle patches in my -next queue a bit
so that we don't but feature-y stuff in there, too. The main thing I'd
like to sneak in is Egbert's hpd irq storm handling, which should be
pretty low-risk since all the infrastructure work has landed already. I
also have the oops fix pending, but that only mustered review before the
w/e and giving how hairy that part of our modeset code is, I want to give
it some more testing before forwarding.
Note: annarchy.fd.o seems to run out of disk space, so couldn't push the
usual for-airlied branch. Tag should work though.
Note 2: I've had to do a backmerge since conflicts grew too ugly, but the
upstream -rc I've backmerged is already in your drm-next.
* tag 'drm-intel-next-2013-04-06' of git://people.freedesktop.org/~danvet/drm-intel: (75 commits)
drm/i915: info level for simulated gpu hang dmesg notice
drm/i915: revert eDP bpp clamping code changes
Revert "drm/i915: fix DP get_hw_state return value"
drm/i915: Don't use the HDMI port color range bit on Valleyview
drm/i915: Set PIPECONF color range bit on Valleyview
drm/i915: extract i9xx_set_pipeconf
drm/i915: Add no-lvds quirk for Fujitsu Esprimo Q900
drm/i915: create pipe_config->dpll for clock state
drm/i915: hw readout support for ->has_pch_encoders
drm/i915: add hw state readout/checking for pipe_config
drm/i915: rip out superflous is_dp&is_cpu_edp tracking
drm/i915: remove leaky eDP functions
drm/i915: track dp target_clock in pipe_config
drm/i915: move dp_m_n computation to dp_encoder->compute_config
drm/i915: clear up the fdi/dp set_m_n confusion
drm/i915: Fix sdvo connector get_hw_state function
drm/i915: drop DPFLIPSTAT enables on VLV v3
drm/i915: add Punit read/write routines for VLV v2
drm/i915: panel power sequencing for VLV eDP v2
drm/i915/dp: fix up VLV DP handling v2
...
This is used way too often in the enable/disable paths. And will
be even more useful in the future.
Note that correct semantics of this change highly depend upon
correct updating of intel_crtc->config: Like with all other
modeset state, we need to call ->disable with the old config,
but ->mode_set and ->enable with the new config.
v2: Do not yet use the flag in the ->disable callbacks - atm we don't
yet have support for the information stored in the pipe_config in the
hw state readout code, so this will be wrong at boot-up/resume.
v3: Rebased on top of the hdmi/dp ddi encoder merging.
v4: Fixup stupid rebase error which lead to a NULL vfunc deref.
v5: On haswell the VGA port is on the PCH!
v6: s/IS_HASWELL/HAS_DDI/, spotted by Paulo Zanoni. Also add a missing
parameter name in a function declaration.
v7: Don't forget to git add ...
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Now since we have replaced the bits to show interest in hotplug IRQs
we can go and nuke the 'hotplug_supported_mask'.
Signed-off-by: Egbert Eich <eich@suse.de>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
commit f40ebd6bcb
Author: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Date: Tue Mar 5 14:24:48 2013 +0100
drm/i915: Turn off hsync and vsync on ADPA when disabling crt
properly disabled the hsync/vsync logic at disable time, but neglected
to re-enable them at enable time.
v2: In the enable hook, restore the connector's expected DPMS level
instead of forcing ON. Do this by stashing a back pointer to the
connector in the crt (suggested by danvet) since otherwise it's awkward
to look up.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Cc: stable@vger.kernel.org
[danvet: Added more verbose commit citation and cc: stable tag. Also,
make it compile. Then self-lart and try to assign the right pointer.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
To clean up hotplug support we add a new enum to intel_encoder:
enum hpd_pin. It allows the encoder to request a hpd line but leave
the details which IRQ is responsible on which chipset generation
to i915_irq.c.
This way requesting hotplug support will become really simple on
the encoder/connector level.
Signed-off-by: Egbert Eich <eich@suse.de>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
A bunch of fixes, nothing truely horrible:
- Fix PCH irq handling race which resulted in missed gmbus/dp aux irqs
and subsequent fallout (Paulo)
- Fixup off-by-one in our hsw id table (Kenneth)
- Fixup ilk rc6 support (disabled by default), regression introduced in
3.8
- g4x plane w/a from Egbert Eich
- gen2/3/4 dpms suspend/standy fixes for VGA outputs from Patrik Jakobsson
- Workaround dying ivb machines with less aggressive rc6 values (Stéphane
Marchesin)
* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915: Turn off hsync and vsync on ADPA when disabling crt
drm/i915: Fix incorrect definition of ADPA HSYNC and VSYNC bits
drm/i915: also disable south interrupts when handling them
drm/i915: enable irqs earlier when resuming
drm/i915: Increase the RC6p threshold.
DRM/i915: On G45 enable cursor plane briefly after enabling the display plane.
drm/i915: Fix Haswell/CRW PCI IDs.
drm/i915: Don't clobber crtc->fb when queue_flip fails
drm/i915: wait_event_timeout's timeout is in jiffies
drm/i915: Fix missing variable initilization
According to PRM we need to disable hsync and vsync even though ADPA is
disabled. The previous code did infact do the opposite so we fix it.
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=56359
Tested-by: max <manikulin@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
So here's my promised pile of fixes for 3.9. I've dropped the core prep
patches for vt-switchless suspend/resume as discussed on irc. Highlights:
- Fix dmar on g4x. Not really gfx related, but I'm fed up with getting
blamed for dmar crapouts.
- Disable wc ptes updates on ilk when dmar is enabled (Chris). So again,
dmar, but this time gfx related :(
- Reduced range support for hsw, using the pipe CSC (Ville).
- Fixup pll limits for gen3/4 (Patrick Jakobsson). The sdvo patch is
already confirmed to fix 2 bug reports, so added cc: stable on that one.
- Regression fix for 8bit fb console (Ville).
- Preserve lane reversal bits on DDI/FDI ports (Damien).
- Page flip vs. gpu hang fixes (Ville). Unfortuntely not quite all of
them, need to decide what to do with the currently still in-flight ones.
- Panel fitter regression fix from Mika Kuoppala (was accidentally left on
on some pipes with the new modset code since 3.7). This also improves
the modeset sequence and might help a few other unrelated issues with
lvds.
- Write backlight regs even harder ... another installement in our eternal
fight against the BIOS and backlights.
- Fixup lid notifier vs. suspend/resume races (Zhang Rui). Prep work for
new ACPI stuff, but closing the race itself seems worthwile on its own.
- A few other small fixes and tiny cleanups all over.
Lots of the patches are cc: stable since I've stalled on a few
not-so-important fixes for 3.8 due to the grumpy noise Linus made.
* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel: (33 commits)
intel/iommu: force writebuffer-flush quirk on Gen 4 Chipsets
drm/i915: Disable WC PTE updates to w/a buggy IOMMU on ILK
drm/i915: Implement pipe CSC based limited range RGB output
drm/i915: inverted brightness quirk for Acer Aspire 4736Z
drm/i915: Print the hw context status is debugfs
drm/i915: Use HAS_L3_GPU_CACHE in i915_gem_l3_remap
drm/i915: Fix PIPE_CONTROL DW/QW write through global GTT on IVB+
drm/i915: Set i9xx sdvo clock limits according to specifications
drm/i915: Set i9xx lvds clock limits according to specifications
drm/i915: Preserve the DDI link reversal configuration
drm/i915: Preserve the FDI line reversal override bit on CPT
drm/i915: add missing \n to UTS_RELEASE in the error_state
drm: Use C8 instead of RGB332 when determining the format from depth/bpp
drm: Fill depth/bits_per_pixel for C8 format
drm/i915: don't clflush gem objects in stolen memory
drm/i915: Don't wait for page flips if there was GPU reset
drm/i915: Kill obj->pending_flip
drm/i915: Fix a typo in a intel_modeset_stage_output_state() comment
drm/i915: remove bogus mutex_unlock from error-path
drm/i915: Print the pipe control page GTT address
...
The FDI link has supported link reversal to make the PCB layout
engineer's life easier for quite a while and we have always presered
this bit as we programmed FDI_RX_CTL with a read/modify/write sequence.
We're trying to take a bit more control over what the BIOS leaves in
various register and with the introduction of DDI, started to program
FDI_RX_CTL fully.
There's a fused bit to indicate DMI link reversal and FDI defaults to
mirroring that configuration. We have a bit to override that behaviour
that we need to preserve from the BIOS.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Now that the driver is in control of whether it needs to disable
everything at take-over or not, we can rip this all out.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Instead of using ADPA/VLV_ADPA/PCH_ADPA in various parts of
intel_crt code, just use adpa_reg which always contains the
correct value for the platform.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel writes:
- seqno wrap fixes and debug infrastructure from Mika Kuoppala and Chris
Wilson
- some leftover kill-agp on gen6+ patches from Ben
- hotplug improvements from Damien
- clear fb when allocated from stolen, avoids dirt on the fbcon (Chris)
- Stolen mem support from Chris Wilson, one of the many steps to get to
real fastboot support.
- Some DDI code cleanups from Paulo.
- Some refactorings around lvds and dp code.
- some random little bits&pieces
* tag 'drm-intel-next-2012-12-21' of git://people.freedesktop.org/~danvet/drm-intel: (93 commits)
drm/i915: Return the real error code from intel_set_mode()
drm/i915: Make GSM void
drm/i915: Move GSM mapping into dev_priv
drm/i915: Move even more gtt code to i915_gem_gtt
drm/i915: Make next_seqno debugs entry to use i915_gem_set_seqno
drm/i915: Introduce i915_gem_set_seqno()
drm/i915: Always clear semaphore mboxes on seqno wrap
drm/i915: Initialize hardware semaphore state on ring init
drm/i915: Introduce ring set_seqno
drm/i915: Missed conversion to gtt_pte_t
drm/i915: Bug on unsupported swizzled platforms
drm/i915: BUG() if fences are used on unsupported platform
drm/i915: fixup overlay stolen memory leak
drm/i915: clean up PIPECONF bpc #defines
drm/i915: add intel_dp_set_signal_levels
drm/i915: remove leftover display.update_wm assignment
drm/i915: check for the PCH when setting pch_transcoder
drm/i915: Clear the stolen fb before enabling
drm/i915: Access to snooped system memory through the GTT is incoherent
drm/i915: Remove stale comment about intel_dp_detect()
...
Conflicts:
drivers/gpu/drm/i915/intel_display.c
Daniel writes:
A few leftover fixes for 3.8:
- VIC support for hdmi infoframes with the associated drm helper, fixes
some black TVs (Paulo Zanoni)
- Modeset state check (and fixup if the BIOS messed with the hw) for
lid-open. modeset-rework fallout. Somehow the original reporter went
awol, so this stalled for way too long until we've found a new
victim^Wreporter with broken BIOS.
- seqno wrap fixes from Mika and Chris.
- Some minor fixes all over from various people.
- Another race fix in the pageflip vs. unpin code from Chris.
- hsw vga resume support and a few more fdi link fixes (only used for vga
on hsw) from Paulo.
- Regression fix for DMAR from Zhenyu Wang - I've scavenged memory from my
DMAR for a while and it broke right away :(
- Regression fix from Takashi Iwai for ivb lvds - some w/a needs to be
(partially) moved back into place. Note that these are regressions in
-next.
- One more fix for ivb 3 pipe support - it now actually seems to work.
* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel: (25 commits)
drm/i915: Fix missed needs_dmar setting
drm/i915: Fix shifted screen on top of LVDS on IVY laptop
drm/i915: disable cpt phase pointer fdi rx workaround
drm/i915: set the LPT FDI RX polarity reversal bit when needed
drm/i915: add lpt_init_pch_refclk
drm/i915: add support for mPHY destination on intel_sbi_{read, write}
drm/i915: reject modes the LPT FDI receiver can't handle
drm/i915: fix hsw_fdi_link_train "retry" code
drm/i915: Close race between processing unpin task and queueing the flip
drm/i915: fixup l3 parity sysfs access check
drm/i915: Clear the existing watermarks for g4x when modifying the cursor sr
drm/i915: do not access BLC_PWM_CTL2 on pre-gen4 hardware
drm/i915: Don't allow ring tail to reach the same cacheline as head
drm/i915: Decouple the object from the unbound list before freeing pages
drm/i915: Set sync_seqno properly after seqno wrap
drm/i915: Include the last semaphore sync point in the error-state
drm/i915: Rearrange code to only have a single method for waiting upon the ring
drm/i915: Simplify flushing activity on the ring
drm/i915: Preallocate next seqno before touching the ring
drm/i915: force restore on lid open
...
If we fail to set the bit when needed we get some nice FDI link
training failures (AKA "black screen on VGA output").
While we don't really know how to properly choose whether we need to
set the bit or not (VBT?), just read the initial value set by the BIOS
and store it for later usage.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Alex writes:
Pretty minor -next pull request. We some additional new bits waiting
internally for release. Hopefully Monday we can get at least some of
them out. The others will probably take a few more weeks.
Highlights of the current request:
- ELD registers for passing audio information to the sound hardware
- Handle GPUVM page faults more gracefully
- Misc fixes
Merge radeon test
* 'drm-next-3.8' of git://people.freedesktop.org/~agd5f/linux: (483 commits)
drm/radeon: bump driver version for new info ioctl requests
drm/radeon: fix eDP clk and lane setup for scaled modes
drm/radeon: add new INFO ioctl requests
drm/radeon/dce32+: use fractional fb dividers for high clocks
drm/radeon: use cached memory when evicting for vram on non agp
drm/radeon: add a CS flag END_OF_FRAME
drm/radeon: stop page faults from hanging the system (v2)
drm/radeon/dce4/5: add registers for ELD handling
drm/radeon/dce3.2: add registers for ELD handling
radeon: fix pll/ctrc mapping on dce2 and dce3 hardware
Linux 3.7-rc7
powerpc/eeh: Do not invalidate PE properly
Revert "drm/i915: enable rc6 on ilk again"
ALSA: hda - Fix build without CONFIG_PM
of/address: sparc: Declare of_iomap as an extern function for sparc again
PM / QoS: fix wrong error-checking condition
bnx2x: remove redundant warning log
vxlan: fix command usage in its doc
8139cp: revert "set ring address before enabling receiver"
MPI: Fix compilation on MIPS with GCC 4.4 and newer
...
Conflicts:
drivers/gpu/drm/exynos/exynos_drm_encoder.c
drivers/gpu/drm/exynos/exynos_drm_fbdev.c
drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
More specifically, the LPT FDI RX only supports 8bpc and a maximum of
2 lanes, so anything above that won't work and should be rejected.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
And use it whenever we call code that uses the DDIs. We already have
intel_ddi.c and prefix every function with intel_ddi_something instead of
haswell_something, so I think replacing the checks with HAS_DDI makes more
sense. Just a cosmetical change, yes I know, but I have this OCD...
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This is a full revert of 59c859d6f2e78344945e8a8406a194156176bc4e:
drm/i915: account for only one PCH receiver on Haswell
Now that the PCH code is fixed to be able use the only PCH transcoder
independently of the pipe and CPU transcoder, we can revert this.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[danvet: Resolve conflict due to the rebasing of dinq on top of
drm-next.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel writes:
Highlights of this -next round:
- ivb fdi B/C fixes
- hsw sprite/plane offset fixes from Damien
- unified dp/hdmi encoder for hsw, finally external dp support on hsw
(Paulo)
- kill-agp and some other prep work in the gtt code from Ben
- some fb handling fixes from Ville
- massive pile of patches to align hsw VGA with the spec and make it
actually work (Paulo)
- pile of workarounds from Jesse, mostly for vlv, but also some other
related platforms
- start of a dev_priv reorg, that thing grew out of bounds and chaotic
- small bits&pieces all over the place, down to better error handling for
load-detect on gen2 (Chris, Jani, Mika, Zhenyu, ...)
On top of the previous pile (just copypasta):
- tons of hsw dp prep patches form Paulo
- round scheduled work items and timers to nearest second (Chris)
- some hw workarounds (Jesse&Damien)
- vlv dp support and related fixups (Vijay et al.)
- basic haswell dp support, not yet wired up for external ports (Paulo)
- edp support (Paulo)
- tons of refactorings to prepare for the above (Paulo)
- panel rework, unifiying code between lvds and edp panels (Jani)
- panel fitter scaling modes (Jani + Yuly Novikov)
- panel power improvements, should now work without the BIOS setting it up
- extracting some dp helpers from radeon/i915 and move them to
drm_dp_helper.c
- randome pile of workarounds (Damien, Ben, ...)
- some cleanups for the register restore code for suspend/resume
- secure batchbuffer support, should enable tear-free blits on gen6+
Chris)
- random smaller fixlets and cleanups.
* 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel: (231 commits)
drm/i915: Restore physical HWS_PGA after resume
drm/i915: Report amount of usable graphics memory in MiB
drm/i915/i2c: Track users of GMBUS force-bit
drm/i915: Allocate the proper size for contexts.
drm/i915: Update load-detect failure paths for modeset-rework
drm/i915: Clear unused fields of mode for framebuffer creation
drm/i915: Always calculate 8xx WM values based on a 32-bpp framebuffer
drm/i915: Fix sparse warnings in from AGP kill code
drm/i915: Missed lock change with rps lock
drm/i915: Move the remaining gtt code
drm/i915: flush system agent TLBs on SNB
drm/i915: Kill off now unused gen6+ AGP code
drm/i915: Calculate correct stolen size for GEN7+
drm/i915: Stop using AGP layer for GEN6+
drm/i915: drop the double-OP_STOREDW usage in blt_ring_flush
drm/i915: don't rewrite the GTT on resume v4
drm/i915: protect RPS/RC6 related accesses (including PCU) with a new mutex
drm/i915: put ring frequency and turbo setup into a work queue v5
drm/i915: don't block resume on fb console resume v2
drm/i915: extract l3_parity substruct from dev_priv
...
Because things changed on Haswell/LPT and the bits checked by
intel_crt_get_hw_state have moved to other registers.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Those bits just don't exist on LPT. The CRT DAC, PCH transcoder and
FDI RX are always connected to DDI E.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
PCH platforms and VLV should map DPMS standby and suspend modes to off, but
due to a buggy reversed comparison this is done on pre-PCH platforms
instead.
Reported-by: Loïc Yhuel <loic.yhuel@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=56754
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The bit doesn't stick, and the output is always cloned from pipe A,
even when it's supposed to scan out from pipe B.
Shuts up annoying warnings from the modeset-rework, too.
I've noticed that with this patch we know get and unknown connection
state since the code can't find a suitable pipe for load detection.
But that beats the previous state of affairs, where it tried to use
pipe B, actually used pipe A and concluded that something is connected
(although it's the LVDS on pipe A and nothing on the VGA connector on
pipe B).
I've tried to make load detect work by remapping the pipe->planes
stuff, so that crtc 0 will use pipe B and hence we still have
something left for load-detect on pipe A. But alas, that upset the hw
a bit.
So there's still some things to figure out, but this here will at
least paper over some of the problems.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=51265
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: extend the commit message a bit with recent observations.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The caller, not intel_connector_update_modes(), should free the edid. This
improves the reusability of intel_connector_update_modes().
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Merge tag 'v3.7-rc2' into drm-intel-next-queued
Linux 3.7-rc2
Backmerge to solve two ugly conflicts:
- uapi. We've already added new ioctl definitions for -next. Do I need to say more?
- wc support gtt ptes. We've had to revert this for snb+ for 3.7 and
also fix a few other things in the code. Now we know how to make it
work on snb+, but to avoid losing the other fixes do the backmerge
first before re-enabling wc gtt ptes on snb+.
And a few other minor things, among them git getting confused in
intel_dp.c and seemingly causing a conflict out of nothing ...
Conflicts:
drivers/gpu/drm/i915/i915_reg.h
drivers/gpu/drm/i915/intel_display.c
drivers/gpu/drm/i915/intel_dp.c
drivers/gpu/drm/i915/intel_modes.c
include/drm/i915_drm.h
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel writes:
The big thing is the disabling of the hsw support by default, cc: stable.
We've aimed for basic hsw support in 3.6, but due to a few bad
happenstances we've screwed up and only 3.8 will have better modeset
support than vesa. To avoid yet another round of fallout from such a
gaffle on for the next platform we've added a module option to disable
early hw support by default. That should also give us more flexibility in
bring-up.
Otherwise just small fixes:
- 3 fixes from Egbert for sdvo corner cases
- invert-brightness quirk entry from Egbert
- revert a dp link training change, it regresses some setups
- and shut up a spurious WARN in our gem fault handler.
- regression fix for an oops on bit17 swizzling machines, introduce in 3.7
- another no-lvds quirk
* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915: Initialize obj->pages before use by i915_gem_object_do_bit17_swizzle()
drm/i915: Add no-lvds quirk for Supermicro X7SPA-H
drm/i915: Insert i915_preliminary_hw_support variable.
drm/i915: shut up spurious WARN in the gtt fault handler
Revert "drm/i915: Try harder to complete DP training pattern 1"
DRM/i915: Restore sdvo_flags after dtd->mode->dtd Roundrtrip.
DRM/i915: Don't clone SDVO LVDS with analog.
DRM/i915: Add QUIRK_INVERT_BRIGHTNESS for NCR machines.
DRM/i915: Don't delete DPLL Multiplier during DAC init.
... instead of relying on the register save/restore madness to do this.
To extract a bit of code call drm_mode_config_reset both on resume
and boot-up and move the hw state frobbing from the crt_init to the
->reset callback. The crt connector is the only one with a ->reset
callback, hence we can easily do this.
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
... since they don't apply to pre-pch platforms and could actually be
harmful.
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The DPLL multipiler is set up in intel_display.c:i9xx_update_pll()
called from i9xx_crtc_mode_set().
There the DPLL multiplier is adjusted so that the SDVO gets a sufficient
bus clock.
When cloning a CRTC between an SDVO driven encoder and the standard
DAC the DAC setup code reseted the multiplier value to 1 thus undoing
the correct setup. There is no need to touch the multiplier in the DAC
setup code: the correct value (i.e. 1 in case no SDVO encoder is used)
is set by i9xx_update_pll() already.
A comment at the code suggested that this code is a left over from the
days when there was no setup for clone modes.
Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Pull drm merge (part 1) from Dave Airlie:
"So first of all my tree and uapi stuff has a conflict mess, its my
fault as the nouveau stuff didn't hit -next as were trying to rebase
regressions out of it before we merged.
Highlights:
- SH mobile modesetting driver and associated helpers
- some DRM core documentation
- i915 modesetting rework, haswell hdmi, haswell and vlv fixes, write
combined pte writing, ilk rc6 support,
- nouveau: major driver rework into a hw core driver, makes features
like SLI a lot saner to implement,
- psb: add eDP/DP support for Cedarview
- radeon: 2 layer page tables, async VM pte updates, better PLL
selection for > 2 screens, better ACPI interactions
The rest is general grab bag of fixes.
So why part 1? well I have the exynos pull req which came in a bit
late but was waiting for me to do something they shouldn't have and it
looks fairly safe, and David Howells has some more header cleanups
he'd like me to pull, that seem like a good idea, but I'd like to get
this merge out of the way so -next dosen't get blocked."
Tons of conflicts mostly due to silly include line changes, but mostly
mindless. A few other small semantic conflicts too, noted from Dave's
pre-merged branch.
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (447 commits)
drm/nv98/crypt: fix fuc build with latest envyas
drm/nouveau/devinit: fixup various issues with subdev ctor/init ordering
drm/nv41/vm: fix and enable use of "real" pciegart
drm/nv44/vm: fix and enable use of "real" pciegart
drm/nv04/dmaobj: fixup vm target handling in preparation for nv4x pcie
drm/nouveau: store supported dma mask in vmmgr
drm/nvc0/ibus: initial implementation of subdev
drm/nouveau/therm: add support for fan-control modes
drm/nouveau/hwmon: rename pwm0* to pmw1* to follow hwmon's rules
drm/nouveau/therm: calculate the pwm divisor on nv50+
drm/nouveau/fan: rewrite the fan tachometer driver to get more precision, faster
drm/nouveau/therm: move thermal-related functions to the therm subdev
drm/nouveau/bios: parse the pwm divisor from the perf table
drm/nouveau/therm: use the EXTDEV table to detect i2c monitoring devices
drm/nouveau/therm: rework thermal table parsing
drm/nouveau/gpio: expose the PWM/TOGGLE parameter found in the gpio vbios table
drm/nouveau: fix pm initialization order
drm/nouveau/bios: check that fixed tvdac gpio data is valid before using it
drm/nouveau: log channel debug/error messages from client object rather than drm client
drm/nouveau: have drm debugging macros build on top of core macros
...
Convert #include "..." to #include <path/...> in drivers/gpu/.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
Remove redundant DRM UAPI header #inclusions from drivers/gpu/.
Remove redundant #inclusions of core DRM UAPI headers (drm.h, drm_mode.h and
drm_sarea.h). They are now #included via drmP.h and drm_crtc.h via a preceding
patch.
Without this patch and the patch to make include the UAPI headers from the core
headers, after the UAPI split, the DRM C sources cannot find these UAPI headers
because the DRM code relies on specific -I flags to make #include "..." work
on headers in include/drm/ - but that does not work after the UAPI split without
adding more -I flags.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
As a quick reference I'll detail the motivation and design of the new code a
bit here (mostly stitched together from patchbomb announcements and commits
introducing the new concepts).
The crtc helper code has the fundamental assumption that encoders and crtcs can
be enabled/disabled in any order, as long as we take care of depencies (which
means that enabled encoders need an enabled crtc to feed them data,
essentially).
Our hw works differently. We already have tons of ugly cases where crtc code
enables encoder hw (or encoder->mode_set enables stuff that should only be
enabled in enocder->commit) to work around these issues. But on the disable
side we can't pull off similar tricks - there we actually need to rework the
modeset sequence that controls all this. And this is also the real motivation
why I've finally undertaken this rewrite: eDP on my shiny new Ivybridge
Ultrabook is broken, and it's broken due to the wrong disable sequence ...
The new code introduces a few interfaces and concepts:
- Add new encoder->enable/disable functions which are directly called from the
crtc->enable/disable function. This ensures that the encoder's can be
enabled/disabled at a very specific in the modeset sequence, controlled by our
platform specific code (instead of the crtc helper code calling them at a time
it deems convenient).
- Rework the dpms code - our code has mostly 1:1 connector:encoder mappings and
does support cloning on only a few encoders, so we can simplify things quite a
bit.
- Also only ever disable/enable the entire output pipeline. This ensures that
we obey the right sequence of enabling/disabling things, trying to be clever
here mostly just complicates the code and results in bugs. For cloneable
encoders this requires a bit of special handling to ensure that outputs can
still be disabled individually, but it simplifies the common case.
- Add infrastructure to read out the current hw state. No amount of careful
ordering will help us if we brick the hw on the initial modeset setup. Which
could happen if we just randomly disable things, oblivious to the state set up
by the bios. Hence we need to be able to read that out. As a benefit, we grow a
few generic functions useful to cross-check our modeset code with actual hw
state.
With all this in place, we can copy&paste the crtc helper code into the
drm/i915 driver and start to rework it:
- As detailed above, the new code only disables/enables an entire output pipe.
As a preparation for global mode-changes (e.g. reassigning shared resources) it
keeps track of which pipes need to be touched by a set of bitmasks.
- To ensure that we correctly disable the current display pipes, we need to
know the currently active connector/encoder/crtc linking. The old crtc helper
simply overwrote these links with the new setup, the new code stages the new
links in ->new_* pointers. Those get commited to the real linking pointers once
the old output configuration has been torn down, before the ->mode_set
callbacks are called.
- Finally the code adds tons of self-consistency checks by employing the new hw
state readout functions to cross-check the actual hw state with what the
datastructure think it should be. These checks are done both after every
modeset and after the hw state has been read out and sanitized at boot/resume
time. All these checks greatly helped in tracking down regressions and bugs in
the new code.
With this new basis, a lot of cleanups and improvements to the code are now
possible (besides the DP fixes that ultimately made me write this), but not yet
done:
- I think we should create struct intel_mode and use it as the adjusted mode
everywhere to store little pieces like needs_tvclock, pipe dithering values or
dp link parameters. That would still be a layering violation, but at least we
wouldn't need to recompute these kinds of things in intel_display.c. Especially
the port bpc computation needed for selecting the pipe bpc and dithering
settings in intel_display.c is rather gross.
- In a related rework we could implement ->mode_valid in terms of ->mode_fixup
in a generic way - I've hunted down too many bugs where ->mode_valid did the
right thing, but ->mode_fixup didn't. Or vice versa, resulting in funny bugs
for user-supplied modes.
- Ditch the idea to rework the hdp handling in the common crtc helper code and
just move things to i915.ko. Which would rid us of the ->detect crtc helper
dependencies.
- LVDS wire pair and pll enabling is all done in the crtc->mode_set function
currently. We should be able to move this to the crtc_enable callbacks (or in
the case of the LVDS wire pair enabling, into some encoder callback).
Last, but not least, this new code should also help in enabling a few neat
features: The hw state readout code prepares (but there are still big pieces
missing) for fastboot, i.e. avoiding the inital modeset at boot-up and just
taking over the configuration left behind by the bios. We also should be able
to extend the configuration checks in the beginning of the modeset sequence and
make better decisions about shared resources (which is the entire point behind
the atomic/global modeset ioctl).
Tested-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Ben Widawsky <ben@bwidawsk.net>
Tested-by: Damien Lespiau <damien.lespiau@intel.com>
Tested-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Vijay Purushothaman <vijay.a.purushothaman@intel.com>
Acked-by: Vijay Purushothaman <vijay.a.purushothaman@intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Acked-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Now that we have solid modeset state tracking and checking code in
place, we can do the Full Monty also after dpms calls.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Because that's what it is. Unfortunately we can't rip this out because
the fb helper has an incetious relationship with the crtc helper - it
likes to call disable_unused_functions, among other things.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Atm we can only check the connector state after a dpms call - while
doing modeset with the copy&pasted crtc helper code things are too
ill-defined for proper checking. But the idea is very much to call
this check from the modeset code, too.
v2: Fix dpms check and don't presume that if the hw isn't on that it
must not be linked up with an encoder (it could simply be switched off
with the dpms state).
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Note that even though this connector is cloneable we still can use the
exact same test to check whether the connector is on or whether the
encoder is enabled - both the dpms code and the encoder disable/enable
frob the exact same hw state.
For dvo/sdvo outputs, this will be different.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
With the new infrastructure we're doing this when enabling/disabling
the entire display pipe.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Yeah, big patch but I couldn't come up with a neat idea of how to
split it up further, that wouldn't break dpms on cloned configs
somehow. But the changes in dvo/sdvo/crt are all pretty much
orthonogal, so it's not too bad a patch.
These are the only encoders that support cloning, which requires a few
special changes compared to the previous patches.
- Compute the desired state of the display pipe by walking all
connected encoders and checking whether any has active connectors.
To make this clearer, drop the old mode parameter to the crtc dpms
function and rename it to intel_crtc_update_dpms.
- There's the curious case of intel_crtc->dpms_mode. With the previous
patches to remove the overlay pipe A code and to rework the load
detect pipe code, the big users are gone. We still keep it to avoid
enabling the pipe twice, but we duplicate this logic with
crtc->active, too. Still, leave this for now and just push a fake
dpms mode into it that reflects the state of the display pipe.
Changes in the encoder dpms functions:
- We clamp the dpms state to the supported range right away. This is
escpecially important for the VGA outputs, where only older hw
supports the intermediate states. This (and the crt->adpa_reg patch)
allows us to unify the crt dpms code again between all variants
(gmch, vlv and pch).
- We only enable/disable the output for dvo/sdvo and leave the encoder
running. The encoder will be disabled/enabled when we switch the
state of the entire output pipeline (which will happen right away
for non-cloned setups). This way the duplication is reduced and
strange interaction when disabling output ports at the wrong time
avoided.
The dpms code for all three types of connectors contains a bit of
duplicated logic, but I think keeping these special cases separate is
simpler: CRT is the only one that hanldes intermediate dpms state
(which requires extra logic to enable/disable things in the right
order), and introducing some abstraction just to share the code
between dvo and sdvo smells like overkill. We can do that once someone
bothers to implement cloning for the more modern outputs. But I doubt
that this will ever happen.
v2: s/crtc/crt/_set_dpms, noticed by Paulo Zanoni.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
CRT is the first output which can be cloned, hence we cannot (yet)
move the dpms handling over to disable/enable. This requires some more
smarts in intel_crtc_dpms first to set the display pipe status
depening upon encoder->connectors_active of all connected encoders.
Because that will happen in a separate step, don't touch the dpms
functions, yet.
v2: Be careful about clearing the _DISABLE flags for intermediate dpms
modes - otherwise we might clobber the crt state when another (cloned)
connector gets enabled.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel writes:
"New stuff for -next. Highlights:
- prep patches for the modeset rework. Note that one of those patches
touches the fb helper in the common drm code.
- hasw hdmi audio support (Wang Xingchao)
- improved instdone dumping for gen7 (Ben)
- unbound tracking and a few follow-up patches from Chris
- dma_buf->begin/end_cpu_access plus fix for drm/udl (Dave)
- improve mmio error reporting for hsw
- prep patch for WQ_NON_REENTRANT removal (Tejun Heo)
"
* 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel: (41 commits)
drm/i915: Remove __GFP_NO_KSWAPD
drm/i915: disable rc6 on ilk when vt-d is enabled
drm/i915: Avoid unbinding due to an interrupted pin_and_fence during execbuffer
drm/i915: Use new INSTDONE registers (Gen7+)
drm/i915: Add new INSTDONE registers
drm/i915: Extract reading INSTDONE
drm/i915: Use a non-blocking wait for set-to-domain ioctl
drm/i915: Juggle code order to ease flow of the next patch
drm/i915: Use cpu relocations if the object is in the GTT but not mappable
drm/i915: Extract general object init routine
drm/i915: Protect private gem objects from truncate (such as imported dmabuf)
drm/i915: Only pwrite through the GTT if there is space in the aperture
i915: use alloc_ordered_workqueue() instead of explicit UNBOUND w/ max_active = 1
drm/i915: Find unclaimed MMIO writes.
drm/i915: Add ERR_INT to gen7 error state
drm/i915: Cantiga+ cannot handle a hsync front porch of 0
drm/i915: fix reassignment of variable "intel_dp->DP"
drm/i915: Try harder to allocate an mmap_offset
drm/i915: Show pin count in debugfs
drm/i915: Show (count, size) of purgeable objects in i915_gem_objects
...
There was some merge conflicts in -next and they weren't so pretty, so
backmerge now to avoid them.
Conflicts:
drivers/gpu/drm/i915/i915_gem.c
drivers/gpu/drm/i915/intel_modes.c
This is left over from the old PLL sharing code and isn't useful now
that PLLs are shared when possible.
Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Since it's redundant - we can get the attached encoder in the
functions themselves.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
GMBUS was enabled over bit-banging as the default in commits:
commit c3dfefa0a6
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue Feb 14 22:37:25 2012 +0100
drm/i915: reenable gmbus on gen3+ again
and
commit 0fb3f969c8
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Fri Mar 2 19:38:30 2012 +0100
drm/i915: enable gmbus on gen2
Unfortunately, GMBUS seems to fail on some CRT displays. Add a bit-banging
fallback to CRT EDID reads.
LKML-Reference: <201207251020.47637.maciej.rutecki@gmail.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=45881
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Alex Ferrando <alferpal@gmail.com>
Cc: stable@vger.kernel.org (for 3.4+3.5)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
With the base addresses shifting around, this is easier to handle.
Also move to the real reg offset on vlv.
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Intel hw only has one MUX for encoders, so outputs are either not
cloneable or all in the same group of cloneable outputs. This neatly
simplifies the code and allows us to ditch some ugly if cascades in
the dp and hdmi init code (well, we need these if cascades for other
stuff still, but that can be taken care of in follow-up patches).
Note that this changes two things:
- dvo can now be cloned with sdvo, but dvo is gen2 whereas sdvo is
gen3+, so no problem. Note that the old code had a bug and didn't
allow cloning crt with dvo (but only the other way round).
- sdvo-lvds can now be cloned with sdvo-non-tv. Spec says this won't
work, but the only reason I've found is that you can't use the
panel-fitter (used for lvds upscaling) with anything else. But we
don't use the panel fitter for sdvo-lvds. Imo this part of Bspec is
a) rather confusing b) mostly as a guideline to implementors (i.e.
explicitly stating what is already implicit from the spec, without
always going into the details of why). So I think we can ignore this
- worst case we'll get a bug report from a user with with sdvo-lvds
and sdvo-tmds and have to add that special case back in.
Because sdvo lvds is a bit special explain in comments why sdvo LVDS
outputs can be cloned, but native LVDS and eDP can't be cloned - we
use the panel fitter for the later, but not for sdvo.
Note that this also uncoditionally initializes the panel_vdd work used
by eDP. Trying to be clever doesn't buy us anything (but strange bugs)
and this way we can kill the is_edp check.
v2: Incorporate review from Paulo
- Add in a missing space.
- Pimp comment message to address his concerns.
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Somehow detect_ddc manages to fall through all checks when we think
that something responds on the ddc i2c address, but the edid read
failed. Fix this up by explicitly checking for this case.
This fixes a regression on newer chips because since
commit aaa377302b
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Sat Jun 16 15:30:32 2012 +0200
drm/i915/crt: Do not rely upon the HPD presence pin
we use ddc detection also on hotplug capable platforms. And one of
these reads all 0s for any i2c transaction if nothing is connected to
the vga port.
v2: Implement Chris Wilson's review:
- simplify logic, default to "nothing detected"
- kill stale comment
- BUG_ON(!crt->type != ANALOG)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=51900
Tested-by: Yang Guang <guang.a.yang@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Dave Airlie