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path: root/drivers/gpu/drm/i915/intel_dp.c
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2011-03-07drm/i915/dp: Sanity check eDP existenceChris Wilson
Some hardware claims to have both an LVDS panel and an eDP output. Whilst this may be true in a rare case, more often it is just broken hardware. If we see an eDP device we know that it must be connected and so we can confirm its existence with a simple probe. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=34165 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=24822 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-02-22drm/i915: Add support for limited color range of broadcast outputsChris Wilson
In order to prevent "crushed blacks" on TVs, the range of the RGB output may be limited to 16-235. This used to be available through Xorg under the "Broadcast RGB" option, so reintroduce support for KMS. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=34543 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-02-16Merge branch 'drm-intel-fixes' into drm-intel-nextChris Wilson
Grab the latest stabilisation bits from -fixes and some suspend and resume fixes from linus. Conflicts: drivers/gpu/drm/i915/i915_drv.h drivers/gpu/drm/i915/i915_irq.c
2011-02-16drm/i915: Move the lvds OpRegion lid detection code to panel and reuse for eDPChris Wilson
Share the lid detection code for the all panels for consistent behaviour and a single place to add the eventual quirks for crap hardware. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-02-11drm/i915: Trigger modesetting if force-audio changesChris Wilson
If the user changes the force-audio property and it no longer reflects the current configuration, then we need to trigger a mode set in order to update the registers. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-02-07drm/i915: cleanup per-pipe reg usageJesse Barnes
We had some conversions over to the _PIPE macros, but didn't get everything. So hide the per-pipe regs with an _ (still used in a few places for legacy) and add a few _PIPE based macros, then make sure everyone uses them. [update: remove usage of non-existent no-op macro] [update 2: keep modesetting suspend/resume code, update to new reg names] Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> [ickle: stylistic cleanups for checkpatch and taste] Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-25drm/i915: use VDD AUX override to make panel power sequencing look betterJesse Barnes
Rather than power cycling the panel when there are no bits to display, use the VDD AUX bit to power the panel up just enough for DP AUX transactions to work. This prevents a bit of unnecessary ugliness as mode sets occur on the panel. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-25drm/i915: remove now unnecessary delays in eDP panel power sequencingJesse Barnes
Now that we're doing the right thing elsewhere, these are no longer necessary. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=31114 Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: fix calculation of eDP signal levels on SandybridgeYuanhan Liu
Some voltage swing/pre-emphasis level use the same value on eDP Sandybridge, like 400mv_0db and 600mv_0db are with the same value of (0x0 << 22). So, fix them, and point out the value if it isn't a supported voltage swing/pre-emphasis level. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
2011-01-11drm/i915: make DP training try a little harderJesse Barnes
When trying to do channel equalization, we need to make sure we still have clock recovery on all lanes while training. We also need to try clock recovery again if we lose the clock or if channel eq fails 5 times. We'll try clock recovery up to 5 more times before giving up entirely. Gets suspend/resume working on my Vaio again and brings us back into compliance with the DP training sequence spec. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-09Merge branch 'drm-intel-fixes' into drm-intel-nextChris Wilson
2010-12-08drm/i915/dp: Fix I2C/EDID handling with active DisplayPort to DVI converterDavid Flynn
The DisplayPort standard (1.1a) states that: The I2C-over-AUX Reply field is valid only when Native AUX CH Reply field is AUX_ACK (00). When Native AUX CH Reply field is not 00, then, I2C-over-AUX Reply field must be 00 and be ignored. This fixes broken EDID reading when using an active DisplayPort to duallink DVI converter. If the AUX CH replier chooses to defer the transaction, a short read occurs and erroneous data is returned as the i2c reply due to a lack of length checking and failure to check for AUX ACK. As a result, broken EDIDs can look like: 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef 00: bc bc bc ff bc bc bc ff bc bc bc ac bc bc bc 45 ???.???.???????E 10: bc bc bc 10 bc bc bc 34 bc bc bc ee bc bc bc 4c ???????4???????L 20: bc bc bc 50 bc bc bc 00 bc bc bc 40 bc bc bc 00 ???P???.???@???. 30: bc bc bc 01 bc bc bc 01 bc bc bc a0 bc bc bc 40 ???????????????@ 40: bc bc bc 00 bc bc bc 00 bc bc bc 00 bc bc bc 55 ???.???.???.???U 50: bc bc bc 35 bc bc bc 31 bc bc bc 20 bc bc bc fc ???5???1??? ???? 60: bc bc bc 4c bc bc bc 34 bc bc bc 46 bc bc bc 00 ???L???4???F???. 70: bc bc bc 38 bc bc bc 11 bc bc bc 20 bc bc bc 20 ???8??????? ??? 80: bc bc bc ff bc bc bc ff bc bc bc ff bc bc bc ff ???.???.???.???. ... which can lead to: [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder [drm:drm_edid_block_valid] *ERROR* Raw EDID: <3>30 30 30 30 30 30 30 32 38 32 30 32 63 63 31 61 000000028202cc1a <3>28 00 02 8c 00 00 00 00 18 00 00 00 00 00 00 00 (............... <3>20 4c 61 73 74 20 62 65 61 63 6f 6e 3a 20 33 32 Last beacon: 32 <3>32 30 6d 73 20 61 67 6f 46 00 05 8c 00 00 00 00 20ms agoF....... <3>36 00 00 00 00 00 00 00 00 0c 57 69 2d 46 69 20 6.........Wi-Fi <3>52 6f 75 74 65 72 01 08 82 84 8b 96 24 30 48 6c Router......$0Hl <3>03 01 01 06 02 00 00 2a 01 00 2f 01 00 32 04 0c .......*../..2.. <3>12 18 60 dd 09 00 10 18 02 00 00 01 00 00 18 00 ..`............. Signed-off-by: David Flynn <davidf@rd.bbc.co.uk> [ickle: fix up some surrounding checkpatch warnings] Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
2010-12-07Merge branch 'drm-intel-fixes' into drm-intel-nextChris Wilson
Conflicts: drivers/gpu/drm/i915/i915_gem.c drivers/gpu/drm/i915/intel_dp.c
2010-12-07drm/i915/dp: Only apply the workaround if the select is still activeChris Wilson
As we may try to power down the link at various times, it is not necessarily still coupled with an encoder and so we must be careful not to depend upon an operation that is only valid when the link is still attached to a pipe. Fixes regression in 5bddd17. Reported-and-tested-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org [after applying 5bddd17]
2010-12-05drm/i915/dp: Trivial code tidyChris Wilson
Locally scope the crtc to where it is used. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-02drm/i915: Apply a workaround for transitioning from DP on pipe B to HDMI.Eric Anholt
This workaround only applies to Ironlake. Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
2010-11-30Revert "drm/i915/dp: use VBT provided eDP params if available"Chris Wilson
This reverts commit 869184a675662bddcdf76c5b95665272facff2b8. This is required for the Sony Vaio Jesse was working on at the time, but breaks most other eDP machines - machines that were working in earlier kernels. Reported-and-tested-by: Dave Airlie <airlied@redhat.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=31188 Tested-by: Zhao Jian <jian.j.zhao@intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-27drm/i915: Fix typo from "Enable DisplayPort Audio"Takashi Iwai
Hi, while I looked through your changes in drm-intel git tree (as I've got a pressure for supporting DisplayPort audio), I stumbled on the possible bug in the commit a9756bb5b25d5d997df0c5d8c95db01292191bea Author: Zhenyu Wang <zhenyuw@linux.intel.com> Date: Sun Sep 19 13:09:06 2010 +0800 drm/i915: Enable DisplayPort audio In this commit, you changed the return value of g4x_dp_detect() to "bit", but it should be "status", I suppose. [ickle: mea culpa.] Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=31094 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-19drm/i915/dp: Add 'force_audio' propertyChris Wilson
Allow the user to override the detection of the sink's audio capabilities from EDID. Not all sinks support the required EDID level to specify whether they handle audio over the display connection, so allow the user to enable it manually. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-19drm/i915: Enable DisplayPort audioZhenyu Wang
This will turn on DP audio output by checking monitor's audio capability. Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> [ickle: rebase onto recent changes and rearranged for clarity] Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-19drm/i915/dp: down the DP link even if the reg indicates it's already downJesse Barnes
Since the PLL may still be on, and the training pattern may not be correct. Fixes suspend/resume on my PCH eDP test system. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> [ickle: minor merge conflict and silence the compiler] Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-08drm/i915/dp: make eDP PLL functions work as advertisedJesse Barnes
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-08drm/i915/dp: don't bother with DP PLL for PCH attached eDPJesse Barnes
We don't use the CPU DP PLL with PCH attached eDP panels, so don't bother to enable it. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-08drm/i915/dp: use VBT provided eDP params if availableJesse Barnes
We can skip most of the link training step if we use the VBT provided values. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-08drm/i915/dp: cache eDP DPCD dataJesse Barnes
Cache the first 4 bytes of DPCD data in the eDP case. It's unlikely to change and can save us some trouble at link training time. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-08drm/i915/dp: eDP power sequencing fixesJesse Barnes
Enable the panel before adjusting eDP link params, make sure the panel is idle after powering it on before proceeding with other activity, delay backlight enable to avoid visible flicker. Also avoid using VDD per hw team recommendation; it can conflict with the builtin panel power sequencing logic and lead to panel power sequencing failures. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-08drm/i915: remove broken intel_pch_has_edp functionJesse Barnes
Since we set the output type of PCH attached eDP panels to INTEL_OUTPUT_eDP this function would never return true when it should. It's been replaced by working functions. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-08drm/i915: add eDP checking functions for the display codeJesse Barnes
The display code needs to distinguish between CPU and PCH attached eDP panels, so add some helpers to handle that. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-08drm/i915/dp: correct eDP lane count and bppJesse Barnes
With the old check we'd never set lane_count or bpp to different values on PCH attached eDP panels. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-08drm/i915/dp: remove redundant is_pch_edp checksJesse Barnes
If is_edp is true, is_pch_edp will always be true. So limit the calls to the latter function to places where the distinction actually matters. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-08drm/i915/dp: convert eDP checks to functions and documentJesse Barnes
Most of the PCH eDP checks are redundant, so document the functions in preparation for removing most of the calls. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-04drm/i915: mark display port DPMS state as 'ON' when enabling outputKeith Packard
The display port DPMS state is tracked internally in the display port driver so that when a hotplug event comes along, the driver can know whether to try retraining the link. This doesn't work well if the driver never sets the DPMS state to ON when the output is enabled. Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-03Merge branch 'drm-intel-fixes' into drm-intel-nextChris Wilson
Conflicts: drivers/gpu/drm/i915/i915_gem_evict.c drivers/gpu/drm/i915/intel_display.c drivers/gpu/drm/i915/intel_dp.c
2010-10-03drm/i915: vblank status not valid while training display portKeith Packard
While the display port is in training mode, vblank interrupts don't occur. Because we have to wait for the display port output to turn on before starting the training sequence, enable the output in 'normal' mode so that we can tell when a vblank has occurred, then start the training sequence. Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-09-24drm/i915/dp: Wait for PP_CONTROL to take effect.Hette Visser
This patch fixes the black screen bug on Dell e6510, by adding two delays to give the eDP panel time to turn on before we continue with the next write. 300ms is rather arbitray and a rather long sleep, we need to find a way of refining this value. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=29278 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-09-24drm/i915: Parse the eDP link configuration from the vBIOSChris Wilson
First step, lets have a look at the values for troublesome panels and see if they may be used to improve our link training. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-09-21Merge branch 'drm-intel-fixes' into HEADChris Wilson
Conflicts: drivers/char/agp/intel-agp.c drivers/gpu/drm/i915/intel_crt.c
2010-09-18drm/i915: use GMBUS to manage i2c linksChris Wilson
Use the GMBUS interface rather than direct bit banging to grab the EDID over DDC (and for other forms of auxiliary communication with external display controllers). The hope is that this method will be much faster and more reliable than bit banging for fetching EDIDs from buggy monitors or through switches, though we still preserve the bit banging as a fallback in case GMBUS fails. Based on an original patch by Jesse Barnes. Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-09-14drm: Use a nondestructive mode for output detect when polling (v2)Chris Wilson
v2: Julien Cristau pointed out that @nondestructive results in double-negatives and confusion when trying to interpret the parameter, so use @force instead. Much easier to type as well. ;-) And fix the miscompilation of vmgfx reported by Sedat Dilek. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-09-13drm: Use a nondestructive mode for output detect when pollingChris Wilson
Destructive load-detection is very expensive and due to failings elsewhere can trigger system wide stalls of up to 600ms. A simple first step to correcting this is not to invoke such an expensive and destructive load-detection operation automatically. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=29536 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=16265 Reported-by: Bruno Prémont <bonbons@linux-vserver.org> Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-09-11drm/i915/dp: Convert a udelay(17000) to a sleep during link-offChris Wilson
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-09-10drm/i915: don't unlock panel regsJesse Barnes
This was just a workaround for some broken Ironlake CRTC code. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-09-09drm/i915: Make the connector->encoder relationship explicitChris Wilson
Currently we have a exact mapping of a connector onto an encoder for its whole lifetime. Make this an explicit property of the structure and so simplify the code. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-09-09drm/i915: Rename intel_encoder->enc to base for consistencyChris Wilson
[Patch is slightly larger than is strictly necessary to fixup surrounding checkpatch.pl errors.] Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-09-08drm/i915/dp: Flush the PLL register write before sleepingChris Wilson
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-09-08drm/i915: make sure panel is sequenced off when starting a mode setJesse Barnes
Otherwise we may not be able to train the DP link. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-09-08drm/i915: make sure VDD AUX power has time to settleJesse Barnes
When turning on or off the VDD AUX bit, we need to give the panel time to start or stop or AUX transactions may fail. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-09-08drm/i915: don't change VDD AUX status in panel power functionsJesse Barnes
Mode set sequence outlines when the AUX VDD bit should be set and cleared, and it's separate from the panel power sequence. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-09-08drm/i915: split DP link training across panel power sequencingJesse Barnes
Mode set sequence requires that we start training, then enable the panel, then complete training. So split the DP training function into two parts; the first enables the DP port and sets training pattern 1 and the second completes the training. As part of this, remove some redundant function args from the various DP handling functions and use the intel_dp fields everywhere we can. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> [ickle: removed first ironlake_edp_backlight_on() on advice of jbarnes] Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-09-08drm/i915: use VDD AUX for panel power around detection and in prepareJesse Barnes
Mode setting sequence specifies that we use VDD AUX for configuration and detection, and early in the mode set sequence. Only later (after DP_A has started training) should we actually enable panel power. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> [ickle: checkpatch.pl complaining about whitespace] Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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