My old 845g complains that the child_device_size inside its VBT,
version 110, is incorrect. Let's fiddle with the version matching such
that it works with this VBT (i.e. treat BIOS v110 as having the same size
as v108).
Fixes [drm:intel_bios_init] *ERROR* Unexpected child device config
size 27 (expected 33 for VBT version 110)
Whether this is correct, no one knows - but it works for this particular
machine.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1464800923-6054-1-git-send-email-chris@chris-wilson.co.uk
Prefer passing struct drm_i915_private to internal interfaces as this
saves us having to dance between drm_device and our native struct. The
savings hare are small (only 70 bytes of unrequired dancing), but
progressive!
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1464012490-30961-1-git-send-email-chris@chris-wilson.co.uk
Reviewed-by: Jani Nikula <jani.nikula@linux.intel.com>
DP dual mode type 1 DVI adaptors aren't required to implement any
registers, so it's a bit hard to detect them. The best way would
be to check the state of the CONFIG1 pin, but we have no way to
do that. So as a last resort, check the VBT to see if the HDMI
port is in fact a dual mode capable DP port.
v2: Deal with VBT code reorganization
Deal with DRM_DP_DUAL_MODE_UNKNOWN
Reduce DEVICE_TYPE_DP_DUAL_MODE_BITS a bit
Accept both DP and HDMI dvo_port in VBT as my BSW
at least declare its DP port as HDMI :(
v3: Ignore DEVICE_TYPE_NOT_HDMI_OUTPUT (Shashank)
Cc: stable@vger.kernel.org
Cc: Tore Anderson <tore@fud.no>
Reported-by: Tore Anderson <tore@fud.no>
Fixes: 7a0baa6234 ("Revert "drm/i915: Disable 12bpc hdmi for now"")
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1462362322-31278-1-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
For dual link panel scenarios there are new fields added in the
VBT which indicate on which port the PWM cntrl and CABC ON/OFF
commands needs to be sent.
v2: Moving the comment to intel_dsi.h(Jani)
v3: Renaming the field names (Jani)
v4 by Jani: make this patch only about VBT
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Yetunde Adebisi <yetundex.adebisi@intel.com>
Signed-off-by: Deepak M <m.deepak@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459346623-30752-2-git-send-email-jani.nikula@intel.com
We've had problems on several occasions with using the panel type
from the VBT block 40. Usually it seems to be 2, which often
doesn't give us the correct timings for the panel. After some
more digging I found a way to get a panel type via the OpRegion
SWSCI GBDA "Get Panel Details" method. Let's try to use it.
The spec has this to say about the output:
"Bits [15:8] - Panel Type
Bits contain the panel type user setting from CMOS
00h = Not Valid, use default Panel Type & Timings from VBT
01h - 0Fh = Panel Number"
Another version of the spec lists the valid range as 1-16, which makes
more sense since VBT supports 16 panels. Based on actual results
from Rob's G45, 1-16 is what we need to accept.
The other bits in the output don't look relevant for the problem at
hand.
The input is specified as:
"Bits [31:4] - Reserved
Reserved (must be zero)
Bits [3:0] - Panel Number
These bits contain the sequential index of Panel, starting at 0 and
counting upwards from the first integrated Internal Flat-Panel Display
Encoder present, and then from the first external Display Encoder
(e.g., S/DVO-B then S/DVO-C) which supports Internal Flat-Panels.
0h - 0Fh = Panel number"
For now I've just hardcoded the input panel number as 0. That would seem
like a decent choise for LVDS. Not so sure about eDP when port != A.
v2: Accept values 1-16
Filter out bogus results in opregion code (Jani)
Add debug logging for all the different branches (Jani)
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Rob Kramer <rob@solution-space.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94825
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1460359431-11003-1-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Rob Kramer <rob@solution-space.com>
Store the extracted panel_type under dev_priv.vbt instead of keeping
around a static variable for it.
Cc: Rob Kramer <rob@solution-space.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
VBT can only contain 16 panel entries, indexed with the panel_type.
To play it safe we should reject panel_type > 0xf, so that we don't
read past the valid data.
v2: Add debug logging (Jani)
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Rob Kramer <rob@solution-space.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com> (v1)
Link: http://patchwork.freedesktop.org/patch/msgid/1460359329-10817-1-git-send-email-ville.syrjala@linux.intel.com
This patch sets the invert bit for hpd detection for each port
based on VBT configuration. Since each AOB can be designed to
depend on invert bit or not, it is expected if an AOB requires
invert bit, the user will set respective bit in VBT.
v2: Separated VBT parsing from the rest of the logic. (Jani)
v3: Moved setting invert bit logic to bxt_hpd_irq_setup()
and changed its logic to avoid looping twice. (Ville)
v4: Changed the logic to mask out the bits first and then
set them to remove need of temporary variable. (Ville)
v5: Moved defines to existing set of defines for the register
and added required breaks. (Ville)
Signed-off-by: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Shubhangi Shrivastava <shubhangi.shrivastava@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[Jani: fixed some checkpatch noise, added kernel-doc.]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459420907-11383-2-git-send-email-shubhangi.shrivastava@intel.com
This patch adds new fields that are not yet added in drm code
in child devices struct
Signed-off-by: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Shubhangi Shrivastava <shubhangi.shrivastava@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459420907-11383-1-git-send-email-shubhangi.shrivastava@intel.com
We've been accumulating code across the driver that depends on the VBT
specific structures and defines. The VBT is an uncontrollable
beast. Encourage encapsulation of the VBT data by hiding the structures
and defines in a private header only to be included from intel_bios.c.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1458125015-7931-7-git-send-email-jani.nikula@intel.com
Favor a single point of truth instead of duplicating the
information. The change also filters out unsupported DSI ports at this
stage, accepting only ports A and C, instead of waiting until the port
checks.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1458125015-7931-6-git-send-email-jani.nikula@intel.com
Two errors in a single line. The size was read from the wrong offset,
and the end index didn't take the five bytes for sequence byte and size
of sequence into account. Fix it all, and break up the calculations a
bit to make it clearer.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reported-and-tested-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Fixes: 2a33d93486 ("drm/i915/bios: add support for MIPI sequence block v3")
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1452784327-27258-1-git-send-email-jani.nikula@intel.com
My 85x has VBT version 108 which has a child dev size of 27 bytes.
Let's allow that without printing an error.
We still want to reject the actual parsin since for that we need
the child device size to be at least 33 bytes. So we should still
check for that, but let's make it print a debug message only instead
of an error.
While at it, toss in a BUILD_BUG_ON() to verify our struct
old_child_dev_config is in fact 33 bytes.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1450110229-30450-8-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
The changes since the sequence block v2 are:
* The whole MIPI bios data block has a separate 32-bit size field since
v3, stored after the version. This facilitates big sequences.
* The size of the panel specific sequence blocks has grown to 32
bits. This facilitates big sequences.
* The elements within sequences now have an 8-bit size field following
the operation byte. This facilitates skipping unknown new operation
bytes, i.e. forward compatibility.
v2 (of the patch): use DRM_ERROR for unknown operation byte
v3 (of the patch): even more bounds checking (Ville)
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1452518102-3154-1-git-send-email-jani.nikula@intel.com
Have get_blocksize() support the special case of MIPI sequence block v3+
which has a separate field for size. Provide and use abstractions for
getting the blocksize given a pointer to the block "envelope",
i.e. pointer to the block id, and given a pointer to the block payload
data.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/e935bd5e119a83dd91214c47e6cd4f6ce8b2a17e.1450702954.git.jani.nikula@intel.com
Make the validation function a boolean operating on a buffer of given
size, removing the extra pointer dances.
Move the OpRegion based VBT validation to intel_opregion_setup(), only
initializing opregion->vbt if it's valid.
v2: move logging about valid VBT to opregion setup too (Ville)
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1450178175-27420-1-git-send-email-jani.nikula@intel.com
The decision about which source will be used for VBT is done in
intel_parse_bios(), not in the VBT validation function. Make the VBT
validation function strictly about validation, and move the debug
logging to where it logically belongs.
Also split the logging about where the valid VBT was found and what the
signature is. This will make even more sense in the future when the
validation for ACPI OpRegion based VBT takes place at OpRegion setup
time.
v2: Split logging about VBT signature and BDB version.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1450178092-27148-1-git-send-email-jani.nikula@intel.com
Unfortunatey there appear to quite a few HSW/BDW machines (eg.
NUCs, Brix Pro) in the wild with LPT/WPT-H that have no physical
CRT connector and non-working FDI. FDI training fails every
single time on these machines. Dunno, maybe they just didn't
bother wiring it up or something?
Unfortunately all the fuse bits and whatnot are telling us that
the CRT connector is present. And so what we get from this is tons
of false positives from the CI systems due to VGA connector forcing.
I've not found any way to detect this purely from hardware, so we
have to resort to looking at the VBT int_crt_support bit. We used
to check this bit on all platforms, but that broke all the old
machines, so the check was then restricted to VLV only in
commit 84b4e042c4 ("drm/i915: only apply crt_present check on VLV")
Considering HSW and VLV VBT probably got defined around the same time,
it should be reasonably safe to assume that the bits is sane for
HSW/BDW as well. At least I have one copy of some VBT spec here that
says it's meant for both VLV and HSW, and it knows about the bit
(lists it being valid from version 155 onwards). Also I have two
desktop machines with actual CRT ports and both have
int_crt_support==1 in their VBTs.
Also we already trust VBT >= 155 to tell us various details about
the DDI ports, so trusting it a bit more seems reasonable.
As far as VLV goes, the added VBT version check should be fine. Even
if someone has some weird VLV machine with a very old VBT version,
it just means they'll end up with a shadow CRT connector. IIRC the
reason for eliminating the shadow CRT connector on VLV was to speed
up display probing rather than fixing something more serious.
v2: Move the platform checks into the VBT parsing code
Also check that the VBT version is at least 155
v3: Improve commit message (Paulo)
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449005493-15487-1-git-send-email-ville.syrjala@linux.intel.com
i915 expects the OpRegion to be cached (i.e. not __iomem), so explicitly
map it with memremap rather than the implied cache setting of
acpi_os_ioremap().
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Backmerge to catch up with 4.3. slightly more involved conflict in the
irq code, but nothing beyond adjacent changes.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
The VBT MIPI Sequence Block version 3 has forward incompatible changes:
First, the block size in the header has been specified reserved, and the
actual size is a separate 32-bit value within the block. The current
find_section() function to will only look at the size in the block
header, and, depending on what's in that now reserved size field,
continue looking for other sections in the wrong place.
Fix this by taking the new block size field into account. This will
ensure that the lookups for other sections will work properly, as long
as the new 32-bit size does not go beyond the opregion VBT mailbox size.
Second, the contents of the block have been completely
changed. Gracefully refuse parsing the yet unknown data version.
Cc: Deepak M <m.deepak@intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Deepak M <m.deepak@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
These registers exist only before GEN5, so currently we may access
undefined registers on VLV/CHV and BXT. Apply the workaround only pre
GEN5.
Since the workaround is relevant only when LVDS is present, for clarity
apply it only if this is the case.
This triggered an unclaimed register access warning on BXT.
v2: (Ville)
- move the workaround to the LVDS init code
- print a debug note about the workaround
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
There are OEMs using DDI-E out there,
so let's enable it.
Unfortunately there is no detection bit for DDI-E
So we need to rely on VBT for that.
I also need to give credits to Xiong since before seing
his approach to check info->support_* I was creating an ugly
vbt->ddie_sfuse_strap in order to propagate the ddi presence info
v2: Rebased as last patch in the series. since all other patches
in this series are needed for anything working propperly on DDI-E.
Credits-to: "Zhang, Xiong Y" <xiong.y.zhang@intel.com>
Cc: "Zhang, Xiong Y" <xiong.y.zhang@intel.com>
Reviewed-by: Xiong Zhang <xiong.y.zhang@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
DDI-E doesn't have the correspondent GMBUS pin.
We rely on VBT to tell us which one it being used instead.
The DVI/HDMI on shared port couldn't exist.
This patch isn't tested without hardware wchich has HDMI
on DDI-E.
v2: fix trailing whitespace
v3: MISSING_CASE take place of BUG()
Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
VBT version 196 increased the size of common_child_dev_config. The
parser code assumed that the size of this structure would not change.
The modified code now copies the amount needed based on the VBT version,
and emits a debug message if the VBT version is unknown (too new); since
the struct config block won't shrink in newer versions it should be
harmless to copy the maximum known size in such cases, so that's what we
do, but emitting the warning is probably sensible anyway.
In the longer run it might make sense to modify the parser code to use a
version/feature mapping, rather than hardcoding things like this, but
for now the variants are fairly manageable.
This fixes a regression introduced in
commit 75067ddecf
Author: Antti Koskipaa <antti.koskipaa@linux.intel.com>
Date: Fri Jul 10 14:10:55 2015 +0300
drm/i915: Per-DDI I_boost override
since that commit changed the child device config size without updating
the checks and memcpy.
v2: Stricter size checks
v3 by Jani:
- Keep the checks strict, and warnigns verbose, but keep going anyway.
- Take care to copy the max amount of child device config we can.
- Fix the messages.
Signed-off-by: David Weinehall <david.weinehall@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
commit 75067ddecf
Author: Antti Koskipaa <antti.koskipaa@linux.intel.com>
Date: Fri Jul 10 14:10:55 2015 +0300
drm/i915: Per-DDI I_boost override
increased size of union child_device_config without taking into account
the size check in parse_sdvo_device_mapping(). Switch the function over
to using the legacy struct only.
Fixes: 75067ddecf ("drm/i915: Per-DDI I_boost override")
Cc: Antti Koskipaa <antti.koskipaa@linux.intel.com>
Cc: David Weinehall <david.weinehall@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Merge tag 'v4.2-rc8' into drm-next
Linux 4.2-rc8
Backmerge required for Intel so they can fix their -next tree up properly.
This reverts
commit 047fe6e6db
Author: David Weinehall <david.weinehall@linux.intel.com>
Date: Tue Aug 4 16:55:52 2015 +0300
drm/i915: Allow parsing of variable size child device entries from VBT
That commit is not valid for v4.2, however it will be valid for v4.3. It
was simply queued too early.
The referenced regressing commit is just fine until the size of struct
common_child_dev_config changes, and that won't happen until
v4.3. Indeed, the expected size checks here rely on the increased size
of the struct, breaking new platforms.
Fixes: 047fe6e6db ("drm/i915: Allow parsing of variable size child device entries from VBT")
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Weinehall <david.weinehall@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
An OEM may request increased I_boost beyond the recommended values
by specifying an I_boost value to be applied to all swing entries for
a port. These override values are specified in VBT.
v2: rebase and remove unused iboost_bit variable
Issue: VIZ-5676
Signed-off-by: Antti Koskipaa <antti.koskipaa@linux.intel.com>
Reviewed-by: David Weinehall <david.weinehall@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Backmerge drm-intel-fixes because a bunch of atomic patch backporting
we had to do lead to horrible conflicts.
Conflicts:
drivers/gpu/drm/drm_crtc.c
Just a bit of context conflict between -next and -fixes.
drivers/gpu/drm/i915/intel_atomic.c
drivers/gpu/drm/i915/intel_display.c
Atomic conflicts, always pick the code from -next.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
There is no correspondent Aux channel for DDI-E.
So we need to rely on VBT to let us know witch one
is being used instead.
v2: Removing some trailing spaces and giving proper
credit to Xiong that added a nice way to avoid port
conflicts by setting supports_dp = 0 when using
equivalent aux for DDI-E.
Credits-to: Xiong Zhang <xiong.y.zhang@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Xiong Zhang <xiong.y.zhang@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
VBT version 196 increased the size of common_child_dev_config. The parser
code assumed that the size of this structure would not change.
The modified code now copies the amount needed based on the VBT version,
and emits a debug message if the VBT version is unknown (too new);
since the struct config block won't shrink in newer versions it should
be harmless to copy the maximum known size in such cases, so that's
what we do, but emitting the warning is probably sensible anyway.
In the longer run it might make sense to modify the parser code to
use a version/feature mapping, rather than hardcoding things like this,
but for now the variants are fairly managable.
This fixes a regression introduced in
commit 90e4f1592b
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed Mar 25 18:45:58 2015 +0200
drm/i915: Fix the VBT child device parsing for BSW
since we're hitting a DRM_ERROR on older platforms with this.
v2: Stricter size checks
Signed-off-by: David Weinehall <david.weinehall@linux.intel.com>
[danvet: Fixup format string.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
With the new DRRS code it kinda sticks out, and we never managed to
get this to work well enough without causing issues. Time to wave
goodbye.
I've decided to keep the logic for programming the reduced clocks
intact, but everything else is gone. If anyone ever wants to resurrect
this we need to redo it all anyway on top of the frontbuffer tracking.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Add one explicit discard of __iomem address space qualifier in
validate_vbt(), and respect it otherwise. This adds clarity in the code,
and reduces the sparse warnings from the module to just one.
Quoting Daniel, "The vbt really is plain old memory. Except that it's
reserved in the e820 table as something special and hence treated as io
range by the kernel. But it is memory, hence casting away the __iomem is
imo the right approach."
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We never pass a non-NULL vbt to validate_vbt, and we can safely expect
the callers to not change.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Make input and output of validate_vbt const, and fix the fallout. We
shouldn't modify the VBT, so make the compiler help us here.
v2: use pointer arithmetics on void* to simplify (Ville)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Make input and output of find_section const, and fix the fallout. We
shouldn't modify the VBT, so make the compiler help us here.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This provides an option to override the value set by VBT
for selecting edp Vswing Pre-emph setting table.
v2: Adding comment about this being a temporary workaround and
making the parameter read-only (Jani)
v3: Changing mode to 0400 instead of 0 (Jani)
https://bugs.freedesktop.org/show_bug.cgi?id=89554
Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Recent BSW VBT has a VBT child device size 37 bytes instead of the 33
bytes our code assumes. This means we fail to parse the VBT and thus
fail to detect eDP ports properly and just register them as DP ports
instead.
Fix it up by using the reported child device size from the VBT instead
of assuming it matches out struct defintions.
The latest spec I have shows that the child device size should be 36
bytes for rev >= 195, however on my BSW the size is actually 37 bytes.
And our current struct definition is 33 bytes.
Feels like the entire VBT parses would need to be rewritten to handle
changes in the layout better, but for now I've decided to do just the
bare minimum to get my eDP port back.
Cc: Vijay Purushothaman <vijay.a.purushothaman@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This will be helpful for adding future platforms. It is better to keep
the information in the single point of truth (the table) instead of
duplicating it into the validity function.
While at it, add dev_priv parameter to the function, also to prepare for
adding future platform support.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Rename intel_gmbus_is_port_valid to intel_gmbus_is_valid_pin, and rename
port parameters to pin as well. This matches usage all around, as
usually a pin is passed to the validity check function. No functional
changes.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The specs refer to pin pairs. Start moving towards using pin rather than
port all around to avoid confusion. No functional changes.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
v2: Adding VBT version check for low_vswing field, and correcting parsing
v3: (Damien)
- Restrain the scope of the 'vswing' variable
- Use the more idiomatic "ev_priv->vbt.edp_low_vswing = vswing == 0;"
instead of if (foo) var = true; else var = false;
- Shorten edp_vswing_premph_setting to edp_vswing_premph to fit in 80 chars
- Add the version from which the edp_vswing_premph field is valid in the
struct definition
Reviewed-by: Satheeshakrishna M <satheeshakrishna.m@intel.com> (v2)
Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This reverts commit 371abae844.
This data seems unreliable and causing many issues and blocking other
teams and feature implementation. Safest way is to revert that for now.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88081
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88039
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=87671
Cc: Vandana Kannan <vandana.kannan@intel.com>
Cc: Deepak M <m.deepak@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Kristian Høgsberg <hoegsberg@gmail.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
LFP brighness control from the VBT block 43 indicates which
controller is used for brightness.
LFP1 brightness control method:
Bit 7-4 = This field controller number of the brightnes controller.
0 = Controller 0
1 = Controller 1
2 = Controller 2
3 = Controller 3
Others = Reserved
Bits 3-0 = This field specifies the brightness control pin to be used on the
platform.
0 = PMIC pin is used for brightness control
1 = LPSS PWM is used for brightness control
2 = Display DDI is used for brightness control
3 = CABC method to control brightness
Others = Reserved
Adding the above fields in dev_priv->vbt and corresponding changes in
parse_backlight()
v2: Jani's review comments addressed
- Move PWM definitions to intel_bios.h
- Moving vbt_version to intel_vbt_data
- Rename brightness to bl_ctrl_data
- Logging just control_pin instead of string
- Avoid adding vbt_version in dev_priv
- Since only DDI option is available as of now, let control pin DDI
affect dev_priv->vbt.backlight.present
v3: Jani's review comments addressed
- Drop control_pin
- Use bdb->version
- set controller to 0 instead of using control pin define
- check controller bounds
- remove superfluous changes in intel_parse_bios
Signed-off-by: Deepak M <m.deepak@intel.com>
Signed-off-by: Vandana Kannan <vandana.kannan@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
PSR (aka SRD) block is defined at VBT and currently being used.
Mainly/At-least to configure the amount of idle_frames require to get
back to PSR Entry.
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Pull drm updates from Dave Airlie:
"This is the main git pull for the drm,
I pretty much froze major pulls at -rc5/6 time, and haven't had much
fallout, so will probably continue doing that.
Lots of changes all over, big internal header cleanup to make it clear
drm features are legacy things and what are things that modern KMS
drivers should be using. Also big move to use the new generic fences
in all the TTM drivers.
core:
atomic prep work,
vblank rework changes, allows immediate vblank disables
major header reworking and cleanups to better delinate legacy
interfaces from what KMS drivers should be using.
cursor planes locking fixes
ttm:
move to generic fences (affects all TTM drivers)
ppc64 caching fixes
radeon:
userptr support,
uvd for old asics,
reset rework for fence changes
better buffer placement changes,
dpm feature enablement
hdmi audio support fixes
intel:
Cherryview work,
180 degree rotation,
skylake prep work,
execlist command submission
full ppgtt prep work
cursor improvements
edid caching,
vdd handling improvements
nouveau:
fence reworking
kepler memory clock work
gt21x clock work
fan control improvements
hdmi infoframe fixes
DP audio
ast:
ppc64 fixes
caching fix
rcar:
rcar-du DT support
ipuv3:
prep work for capture support
msm:
LVDS support for mdp4, new panel, gpu refactoring
exynos:
exynos3250 SoC support, drop bad mmap interface,
mipi dsi changes, and component match support"
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (640 commits)
drm/mst: rework payload table allocation to conform better.
drm/ast: Fix HW cursor image
drm/radeon/kv: add uvd/vce info to dpm debugfs output
drm/radeon/ci: add uvd/vce info to dpm debugfs output
drm/radeon: export reservation_object from dmabuf to ttm
drm/radeon: cope with foreign fences inside the reservation object
drm/radeon: cope with foreign fences inside display
drm/core: use helper to check driver features
drm/radeon/cik: write gfx ucode version to ucode addr reg
drm/radeon/si: print full CS when we hit a packet 0
drm/radeon: remove unecessary includes
drm/radeon/combios: declare legacy_connector_convert as static
drm/radeon/atombios: declare connector convert tables as static
drm/radeon: drop btc_get_max_clock_from_voltage_dependency_table
drm/radeon/dpm: drop clk/voltage dependency filters for BTC
drm/radeon/dpm: drop clk/voltage dependency filters for CI
drm/radeon/dpm: drop clk/voltage dependency filters for SI
drm/radeon/dpm: drop clk/voltage dependency filters for NI
drm/radeon: disable audio when we disable hdmi (v2)
drm/radeon: split audio enable between eg and r600 (v2)
...
- final bits (again) for the rotation support (Sonika Jindal)
- support bl_power in the intel backlight (Jani)
- vdd handling improvements from Ville
- i830M fixes from Ville
- piles of prep work all over to make skl enabling just plug in (Damien, Sonika)
- rename DP training defines to reflect latest edp standards, this touches all
drm drivers supporting DP (Sonika Jindal)
- cache edids during single detect cycle to avoid re-reading it for e.g. audio,
from Chris
- move w/a for registers which are stored in the hw context to the context init
code (Arun&Damien)
- edp panel power sequencer fixes, helps chv a lot (Ville)
- piles of other chv fixes all over
- much more paranoid pageflip handling with stall detection and better recovery
from Chris
- small things all over, as usual
* tag 'drm-intel-next-2014-09-05' of git://anongit.freedesktop.org/drm-intel: (114 commits)
drm/i915: Update DRIVER_DATE to 20140905
drm/i915: Decouple the stuck pageflip on modeset
drm/i915: Check for a stalled page flip after each vblank
drm/i915: Introduce a for_each_plane() macro
drm/i915: Rewrite ABS_DIFF() in a safer manner
drm/i915: Add comments explaining the vdd on/off functions
drm/i915: Move DP port disable to post_disable for pch platforms
drm/i915: Enable DP port earlier
drm/i915: Turn on panel power before doing aux transfers
drm/i915: Be more careful when picking the initial power sequencer pipe
drm/i915: Reset power sequencer pipe tracking when disp2d is off
drm/i915: Track which port is using which pipe's power sequencer
drm/i915: Fix edp vdd locking
drm/i915: Reset the HEAD pointer for the ring after writing START
drm/i915: Fix unsafe vma iteration in i915_drop_caches
drm/i915: init sprites with univeral plane init function
drm/i915: Check of !HAS_PCH_SPLIT() in PCH transcoder funcs
drm/i915: Use HAS_GMCH_DISPLAY un underrun reporting code
drm/i915: Use IS_BROADWELL() instead of IS_GEN8() in forcewake code
drm/i915: Don't call gen8_fbc_sw_flush() on chv
...
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drm: backmerge tag 'v3.17-rc5' into drm-next
This is requested to get the fixes for intel and radeon into the
same tree for future development work.
i915_display.c: fix missing dev_priv conflict.
Rename the defines to have levels instead of values for vswing and
pre-emph levels as the values may differ in other scenarios like low vswing of
eDP1.4 where the values are different.
Done using following cocci patch for each define:
@@
@@
# define DP_TRAIN_VOLTAGE_SWING_400 (0 << 0)
+ # define DP_TRAIN_VOLTAGE_SWING_LEVEL_0 (0 << 0)
...
Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The __init annotations for the DMI callback functions are wrong as this
code can be called even after the module has been initialized, e.g. like
this:
# echo 1 > /sys/bus/pci/devices/0000:00:02.0/remove
# modprobe i915
# echo 1 > /sys/bus/pci/rescan
The first command will remove the PCI device from the kernel's device
list so the second command won't see it right away. But as it registers
a PCI driver it'll see it on the third command. If the system happens to
match one of the DMI table entries we'll try to call a function in long
released memory and generate an Oops, at best.
Fix this by removing the bogus annotation.
Modpost should have caught that one but it ignores section reference
mismatches from the .rodata section. :/
Fixes: 25e341cfc3 ("drm/i915: quirk away broken OpRegion VBT")
Fixes: 8ca4013d70 ("CHROMIUM: i915: Add DMI override to skip CRT...")
Fixes: 425d244c86 ("drm/i915: ignore LVDS on intel graphics systems...")
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Duncan Laurie <dlaurie@chromium.org>
Cc: Jarod Wilson <jarod@redhat.com>
Cc: Rusty Russell <rusty@rustcorp.com.au> # Can modpost be fixed?
Cc: stable@vger.kernel.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This patch fix spelling typo in printk within vairous
part of the code.
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The knowledge about the HDMI/DVI DDI translation table was scattered
around.
- info->hdmi_level_shift was initialized with 6, the index of the 800
mV, 0dB translation
- A check on the VBT value was done to ensure it wasn't overflowing
the translation table (< 0xC)
- The actual programming was done in intel_ddi.c
As we need to change that knowledge for Broadwell, let's gather
everything into one place.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This particular nasty presented itself while trying to register the
intelfb device (intel_fbdev.c). During the process of registering the device
the driver will disable the crtc via i9xx_crtc_disable. These will
also disable the panel using the generic mipi panel functions in
dsi_mod_vbt_generic.c. The stale MIPI generic data sequence pointers would
cause a crash within those functions. However, all of this is happening
while console_lock is held from do_register_framebuffer inside fbcon.c. Which
means that you got kernel log and just the device appearing to reboot/hang for
no apparent reason.
The fault started from the FB_EVENT_FB_REGISTERED event using the
fb_notifier_call_chain call in fbcon.c.
This regression has been introduced in
commit d3b542fcfc
Author: Shobhit Kumar <shobhit.kumar@intel.com>
Date: Mon Apr 14 11:00:34 2014 +0530
drm/i915: Add parsing support for new MIPI blocks in VBT
Cc: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Rafael Barbalho <rafael.barbalho@intel.com>
Reviewed-by: Shobhit Kumar <shobhit.kumar@intel.com>
[danvet: Add regression citation.]
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Apparently there are Apple laptops with magic smoke for a VBIOS, which
we fail to find and use. Default to having and setting up backlight in
this case.
This fixes a regression introduced by
commit c675949ec5
Author: Jani Nikula <jani.nikula@intel.com>
Date: Wed Apr 9 11:31:37 2014 +0300
drm/i915: do not setup backlight if not available according to VBT
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=77831
Reported-and-tested-by: Matteo Cypriani <mcy@lm7.fr>
Cc: stable@vger.kernel.org # 3.15+
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
> Bunch of stuff for 3.16 still:
> - Mipi dsi panel support for byt. Finally! From Shobhit&others. I've
> squeezed this in since it's a regression compared to vbios and we've
> been ridiculed about it a bit too often ...
> - connection_mutex deadlock fix in get_connector (only affects i915).
> - Core patches from Matt's primary plane from Matt Roper, I've pushed the
> i915 stuff to 3.17.
> - vlv power well sequencing fixes from Jesse.
> - Fix for cursor size changes from Chris.
> - agpbusy fixes from Ville.
> - A few smaller things.
>
* tag 'drm-intel-fixes-2014-06-06' of git://anongit.freedesktop.org/drm-intel: (32 commits)
drm/i915: BDW: Adding missing cursor offsets.
drm: Fix getconnector connection_mutex locking
drm/i915/bdw: Only use 2g GGTT for 32b platforms
drm/i915: Nuke pipe A quirk on i830M
drm/i915: fix display power sw state reporting
drm/i915: Always apply cursor width changes
drm/i915: tell the user if both KMS and UMS are disabled
drm/plane-helper: Add drm_plane_helper_check_update() (v3)
drm: Check CRTC compatibility in setplane
drm/i915: use VBT to determine whether to enumerate the VGA port
drm/i915: Don't WARN about ring idle bit on gen2
drm/i915: Silence the WARN if the user tries to GTT mmap an incoherent object
drm/i915: Move the C3 LP write bit setup to gen3_init_clock_gating() for KMS
drm/i915: Enable interrupt-based AGPBUSY# enable on 85x
drm/i915: Flip the sense of AGPBUSY_DIS bit
drm/i915: Set AGPBUSY# bit in init_clock_gating
drm/i915/vlv: add pll assertion when disabling DPIO common well
drm/i915/vlv: move DPIO common reset de-assert into __vlv_set_power_well
drm/i915/vlv: re-order power wells so DPIO common comes after TX
drm/i915/vlv: move CRI refclk enable into __vlv_set_power_well
...
Merge drm-fixes into drm-next.
Both i915 and radeon need this done for later patches.
Conflicts:
drivers/gpu/drm/drm_crtc_helper.c
drivers/gpu/drm/i915/i915_drv.h
drivers/gpu/drm/i915/i915_gem.c
drivers/gpu/drm/i915/i915_gem_execbuffer.c
drivers/gpu/drm/i915/i915_gem_gtt.c
It seems by default the VBT has MIPI configuration block as well. The
Generic driver will assume always MIPI if MIPI configuration block is found.
This is causing probelm when actually there is eDP. Fix this by looking
into general definition block which will have device configurations. From here
we can figure out what is the LFP type and initialize MIPI only if MIPI
is found.
v2: Addressed review comments by Damien
- Moved PORT definitions to intel_bios.h and renamed as DVO_PORT_MIPIA
- renamed is_mipi to has_mipi and moved definition as suggested
- Check has_mipi inside parse_mipi and intel_dsi_init insted of outside
v3: Make has_mipi as a bitfield as suggested
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[danvet: fold in conditions to pack everything neatly below 80 chars.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Use defines, do not set anything if VBT has values unknown to us.
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Be we read and chase pointers from the VBT, it is prudent to make sure
that those accesses are wholly contained within the MMIO region, or else
we may cause a kernel panic during boot.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Reviewed-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Make sure that the whole BDB section is within the MMIO region prior to
accessing it contents. That we don't read outside of the secion is left
up to the individual section parsers.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Reviewed-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drm-intel-next-2014-04-16:
- vlv infoframe fixes from Jesse
- dsi/mipi fixes from Shobhit
- gen8 pageflip fixes for LRI/SRM from Damien
- cmd parser fixes from Brad Volkin
- some prep patches for CHV, DRRS, ...
- and tons of little things all over
drm-intel-next-2014-04-04:
- cmd parser for gen7 but only in enforcing and not yet granting mode - the
batch copying stuff is still missing. Also performance is a bit ... rough
(Brad Volkin + OACONTROL fix from Ken).
- deprecate UMS harder (i.e. CONFIG_BROKEN)
- interrupt rework from Paulo Zanoni
- runtime PM support for bdw and snb, again from Paulo
- a pile of refactorings from various people all over the place to prep for new
stuff (irq reworks, power domain polish, ...)
drm-intel-next-2014-04-04:
- cmd parser for gen7 but only in enforcing and not yet granting mode - the
batch copying stuff is still missing. Also performance is a bit ... rough
(Brad Volkin + OACONTROL fix from Ken).
- deprecate UMS harder (i.e. CONFIG_BROKEN)
- interrupt rework from Paulo Zanoni
- runtime PM support for bdw and snb, again from Paulo
- a pile of refactorings from various people all over the place to prep for new
stuff (irq reworks, power domain polish, ...)
Conflicts:
drivers/gpu/drm/i915/i915_gem_context.c
This cleans up the checkpatch errors for the merged commit -
commit d3b542fcfc
Author: Shobhit Kumar <shobhit.kumar@intel.com>
Date: Mon Apr 14 11:00:34 2014 +0530
drm/i915: Add parsing support for new MIPI blocks in VBT
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The parser extracts the config block(#52) and sequence(#53) data
and store in private data structures.
v2: Address review comments by Jani
- adjust code for the structure changes for bdb_mipi_config
- add boundry and buffer overflow checks as suggested
- use kmemdup instead of kmalloc and memcpy
v3: More strict check while parsing VBT
- Ensure that at anytime we do not go beyond sequence block
while parsing
- On unknown element fail the whole parsing
v4: Style changes and spell check mostly as suggested by Jani
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The only supported types are none and PWM. Other values are obsolete or
reserved, don't add them.
Tested-by: Kamal Mostafa <kamal@canonical.com>
Tested-by: Martin <bugs@mrvanes.com>
Tested-by: jrg.otte@gmail.com
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This patch reads the DRRS support and Mode type from VBT fields.
The read information will be stored in VBT struct during BIOS
parsing. The above functionality is needed for decision making
whether DRRS feature is supported in i915 driver for eDP panels.
This information helps us decide if seamless DRRS can be done
at runtime to support certain power saving features. This patch
was tested by setting necessary bit in VBT struct and merging
the new VBT with system BIOS so that we can read the value.
v2: Incorporated review comments from Chris Wilson
Removed "intel_" as a prefix for DRRS specific declarations.
v3: Incorporated Jani's review comments
Removed function which deducts drrs mode from panel_type. Modified some
print statements. Made changes to use DRRS_NOT_SUPPORTED as 0 instead of -1.
v4: Incorporated Jani's review comments.
Modifications around setting vbt drrs_type.
Signed-off-by: Pradeep Bhat <pradeep.bhat@intel.com>
Signed-off-by: Vandana Kannan <vandana.kannan@intel.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
[danvet: Drop the misleading/redundant comment about the added drrs
field in the vbt struct as discussed with Jani on irc.]
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
MIPI Block #52 which provides configuration details for the MIPI panel
including dphy settings as per panel and tcon specs
Block #53 gives information on panel enable sequences
v2: Address review comemnts from Jani
- Move panel ids from intel_dsi.h to intel_bios.h
- bdb_mipi_config structure improvements for cleaner code
- Adding units for the pps delays, all in ms
- change data structure to be more cleaner and simple
v3: Corrected the unit for pps delays as 100us
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
With 20+ module parameters, I think referring to them via a struct
improves clarity over just having a bunch of globals. While at it, move
the parameter initialization and definitions into a new file
i915_params.c to reduce clutter in i915_drv.c.
Apart from the ill-named i915_enable_rc6, i915_enable_fbc and
i915_enable_ppgtt parameters, for which we lose the "i915_" prefix
internally, the module parameters now look the same both on the kernel
command line and in code. For example, "i915.modeset".
The downsides of the change are losing static on a couple of variables
and not having the initialization and module_param_named() right next to
each other. On the other hand, all module parameters are now defined in
one place at i915_params.c. Plus you can do this to find all module
parameter references:
$ git grep "i915\." -- drivers/gpu/drm/i915
v2:
- move the definitions into a new file
- s/i915_params/i915/
- make i915_try_reset i915.reset, for consistency
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We don't actually do anything with the information yet, but parse and
log what's in the VBT.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Store the SSC refclock frequency in kHz to get more accuracy. Currently
we're pretending that 66 MHz is ~66000 kHz, when in fact it is actually
~66667 kHz. By storing the less rounded kHz value we get a much better
accuracy for out pixel clock calculations.
Cc: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We had been using a DMI table workaround to select the right
frequency for devices, but this is fragile and must be updated
with every new platform.
Instead the default case when VBT is missing is changed to use
120MHz clock for LVDS SSC for these generations.
The docs for 2010-Core, SandyBridge, and IvyBridge all indicate
that the reference frequency for LVDS is 120MHz:
"2010 Core"
http://intellinuxgraphics.org/IHD_OS_Vol3_Part3r2.pdf
page 38
Reference Frequency: 120MHz for CRT and LVDS. 100MHz for the FDI.
"2011 SandyBridge"
http://intellinuxgraphics.org/documentation/SNB/IHD_OS_Vol3_Part3.pdf
page 33
Reference Frequency: 120MHz for CRT, HDMI, LVDS. 100MHz for the FDI.
"2012 IvyBridge"
http://intellinuxgraphics.org/documentation/IVB/IHD_OS_Vol3_Part4.pdf
page 27
Reference Frequency: 120 MHz for CRT, HDMI, LVDS, 100MHz for the FDI.
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
[olof: Fixup for recent base, switched from if/else to single call]
Signed-off-by: Olof Johansson <olof@lixom.net>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
It only controls the setting of the vbt.edp_support variable, which in
turn only controls one debug output plus can also force-disable the
lvds output.
Since the value only restricted this logic to mobile ilk there's the
slight risk that this will break lvds on desktop ilk or on snb/ivb
platforms. But with the vbt it's better when we know what's going on
here, so let's rip it out and see what happens.
Cc: Ben Widawsky <benjamin.widawsky@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
There's no reason to init a DP connector if the encoder just supports
HDMI: we'll just waste hundreds and hundreds of cycles trying to do DP
AUX transactions to detect if there's something there. Same goes for a
DP connector that doesn't support HDMI, but I'm not sure these
actually exist.
v2: - Use bit fields
- Remove useless identation level
- Replace DRM_ERROR with DRM_DEBUG_KMS
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Our code makes a lot of assumptions regarding what each DDI port
actually supports, and the VBT should tell us what is really happening
in the hardware. So parse the information provided by the VBT and
check if any of our assumptions is wrong.
Our driver also has a history of not really trusting the VBT, so a
WARN here could mean that:
a) our coding assumptions are wrong
b) the VBT is wrong
c) we're incorrectly parsing the VBT
d) the checks are wrong
But I really hope we won't ever trigger any of those WARNs.
v2: Don't check the redundant "Capabilities" field from byte 24 since
it doesn't seem to be used.
v3: Rebase
v4: Replace WARN with DRM_DEBUG_KMS
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com> (v2)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Our code currently assumes that port X will use the DP AUX channel X
and the DDC pin X. The VBT should tell us how things are mapped, so
add some WARNs in case we discover our assumptions are wrong (or in
case the VBT is just wrong, which is also perfectly possible).
Why would someone wire port B to AUX C and DDC D?
v2: Rebase
v3: Convert WARNs to DRM_DEBUG_KMS
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Chris Wilson