openwrt/staging/blogic.git
11 years agodrm/i915: Add POWER_DOMAIN_VGA
Ville Syrjälä [Mon, 16 Sep 2013 14:38:30 +0000 (17:38 +0300)]
drm/i915: Add POWER_DOMAIN_VGA

VGA registers/memory live inside the the display power well. Add a power
domain for VGA.

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>
11 years agodrm/i915: Refactor power well refcount inc/dec operations
Ville Syrjälä [Mon, 16 Sep 2013 14:38:29 +0000 (17:38 +0300)]
drm/i915: Refactor power well refcount inc/dec operations

We increase/decrease the power well refcount in several places now, and
all of those places need to do the same thing, so pull that code into
a few small helper functions.

v2: Rename the funcs to __intel_power_well_{get,put}

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>
11 years agodrm/i915: Add intel_display_power_{get, put} to request power for specific domains
Ville Syrjälä [Mon, 16 Sep 2013 14:38:28 +0000 (17:38 +0300)]
drm/i915: Add intel_display_power_{get, put} to request power for specific domains

Add APIs to get/put power well references for specific purposes.

v2: Split the i915_request change to another patch

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>
11 years agodrm/i915: Change i915_request power well handling
Ville Syrjälä [Mon, 16 Sep 2013 14:38:27 +0000 (17:38 +0300)]
drm/i915: Change i915_request power well handling

Reorganize the internal i915_request power well handling to use the
reference count just like everyone else. This way all we need to do is
check the reference count and we know whether the power well needs to be
enabled of disabled.

v2: Split he intel_display_power_{get,put} change to another patch.
    Add intel_resume_power_well() to make sure we enable the power
    well on resume

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>
11 years agodrm/i915: POSTING_READ IPS_CTL before waiting for the vblank
Paulo Zanoni [Thu, 19 Sep 2013 20:03:05 +0000 (17:03 -0300)]
drm/i915: POSTING_READ IPS_CTL before waiting for the vblank

Make sure we write to IPS before we actually wait.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: don't disable ERR_INT on the IRQ handler
Paulo Zanoni [Thu, 19 Sep 2013 20:00:36 +0000 (17:00 -0300)]
drm/i915: don't disable ERR_INT on the IRQ handler

We currently disable the ERR_INT interrupts while running the IRQ
handler because we fear that if we do an unclaimed register access
from inside the IRQ handler we'll keep triggering the IRQ handler
forever.

The problem is that since we always disable the ERR_INT interrupts at
the IRQ handler, when we get a FIFO underrun we'll always print both
messages:
  - "uncleared fifo underrun on pipe A"
  - "Pipe A FIFO underrun"

Because the "was_enabled" variable from
ivybridge_set_fifo_underrun_reporting will always be false (since we
disable ERR int at the IRQ handler!).

Instead of actually fixing ivybridge_set_fifo_underrun_reporting,
let's just remove the "disable ERR_INT during the IRQ handler" code.
As far as we know we shouldn't really be triggering ERR_INT interrupts
from the IRQ handler, so if we ever get stuck in the endless loop of
interrupts we can git-bisect and revert (and we can even bisect and
revert this patch in case I'm just wrong). As a bonus, our IRQ handler
is now simpler and a few nanoseconds faster.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915/vlv: disable rc6p and rc6pp residency reporting on BYT
Jesse Barnes [Wed, 11 Sep 2013 20:43:20 +0000 (13:43 -0700)]
drm/i915/vlv: disable rc6p and rc6pp residency reporting on BYT

Byt doesn't have rc6p and rc6pp support and even more important the
the offsets of the residency registers there's something else. So Just
return a constant 0 to avoid upsetting userspace tools like powertop.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: Explain a bit in the commit message what's going on.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915/vlv: honor i915_enable_rc6 boot param on VLV
Jesse Barnes [Thu, 19 Sep 2013 16:33:13 +0000 (09:33 -0700)]
drm/i915/vlv: honor i915_enable_rc6 boot param on VLV

Disabling it isn't really an option on these platforms, but having it
available for power comparisons is useful.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: s/HAS_L3_GPU_CACHE/HAS_L3_DPF
Ben Widawsky [Thu, 19 Sep 2013 18:01:40 +0000 (11:01 -0700)]
drm/i915: s/HAS_L3_GPU_CACHE/HAS_L3_DPF

We'd only ever used this define to denote whether or not we have the
dynamic parity feature (DPF) and never to determine whether or not L3
exists. Baytrail is a good example of where L3 exists, and not DPF.

This patch provides clarify in the code for future use cases which might
want to actually query whether or not L3 exists.

v2: Add /* DPF == dynamic parity feature */

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Do remaps for all contexts
Ben Widawsky [Thu, 19 Sep 2013 02:03:18 +0000 (19:03 -0700)]
drm/i915: Do remaps for all contexts

On both Ivybridge and Haswell, row remapping information is saved and
restored with context. This means, we never actually properly supported
the l3 remapping because our sysfs interface is asynchronous (and not
tied to any context), and the known faulty HW would be reused by the
next context to run.

Not that due to the asynchronous nature of the sysfs entry, there is no
point modifying the registers for the existing context. Instead we set a
flag for all contexts to load the correct remapping information on the
next run. Interested clients can use debugfs to determine whether or not
the row has been remapped.

One could propose at this point that we just do the remapping in the
kernel. I guess since we have to maintain the sysfs interface anyway,
I'm not sure how useful it is, and I do like keeping the policy in
userspace; (it wasn't my original decision to make the
interface the way it is, so I'm not attached).

v2: Force a context switch when we have a remap on the next switch.
(Ville)
Don't let userspace use the interface with disabled contexts.

v3: Don't force a context switch, just let it nop
Improper context slice remap initialization, 1<<1 instead of 1<<i, but I
rewrote it to avoid a second round of confusion.
Error print moved to error path (All Ville)
Added a comment on why the slice remap initialization happens.

CC: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Keep a list of all contexts
Ben Widawsky [Wed, 18 Sep 2013 04:12:45 +0000 (21:12 -0700)]
drm/i915: Keep a list of all contexts

I have implemented this patch before without creating a separate list
(I'm having trouble finding the links, but the messages ids are:
<1364942743-6041-2-git-send-email-ben@bwidawsk.net>
<1365118914-15753-9-git-send-email-ben@bwidawsk.net>)

However, the code is much simpler to just use a list and it makes the
code from the next patch a lot more pretty.

As you'll see in the next patch, the reason for this is to be able to
specify when a context needs to get L3 remapping. More details there.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Make l3 remapping use the ring
Ben Widawsky [Wed, 18 Sep 2013 04:12:44 +0000 (21:12 -0700)]
drm/i915: Make l3 remapping use the ring

Using LRI for setting the remapping registers allows us to stream l3
remapping information. This is necessary to handle per context remaps as
we'll see implemented in an upcoming patch.

Using the ring also means we don't need to frob the DOP clock gating
bits.

v2: Add comment about lack of worry for concurrent register access
(Daniel)

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[danvet: Bikeshed the comment a bit by doing a s/XXX/Note - there's
nothing to fix.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Add second slice l3 remapping
Ben Widawsky [Thu, 19 Sep 2013 18:13:41 +0000 (11:13 -0700)]
drm/i915: Add second slice l3 remapping

Certain HSW SKUs have a second bank of L3. This L3 remapping has a
separate register set, and interrupt from the first "slice". A slice is
simply a term to define some subset of the GPU's l3 cache. This patch
implements both the interrupt handler, and ability to communicate with
userspace about this second slice.

v2:  Remove redundant check about non-existent slice.
Change warning about interrupts of unknown slices to WARN_ON_ONCE
Handle the case where we get 2 slice interrupts concurrently, and switch
the tracking of interrupts to be non-destructive (all Ville)
Don't enable/mask the second slice parity interrupt for ivb/vlv (even
though all docs I can find claim it's rsvd) (Ville + Bryan)
Keep BYT excluded from L3 parity

v3: Fix the slice = ffs to be decremented by one (found by Ville). When
I initially did my testing on the series, I was using 1-based slice
counting, so this code was correct. Not sure why my simpler tests that
I've been running since then didn't pick it up sooner.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Fix HSW parity test
Ben Widawsky [Wed, 18 Sep 2013 04:12:42 +0000 (21:12 -0700)]
drm/i915: Fix HSW parity test

Haswell changed the log registers to be WO, so we can no longer read
them to determine the programming (which sucks, see later note). For
now, simply use the cached value, and hope HW doesn't screw us over.

v2: Simplify the logic to avoid an extra !, remove last, and fix the
buffer offset which broke along the rebase (Ville)

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=57441
CC: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: dump crtc timings from the pipe config
Daniel Vetter [Thu, 19 Sep 2013 12:53:58 +0000 (14:53 +0200)]
drm/i915: dump crtc timings from the pipe config

I always get royally confused how a modeline with all zeros could
possible pass the paranoid pipe config checker. Until I realize again
that we only check the crtc timings. So dump the crtc timings for the
adjusted mode.

This will be even more important for 3D support where the crtc timings
are markedly different from the input modeline if we have
frame-by-frame 3d output enabled.

Cc: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: register backlight device also when backlight class is a module
Jani Nikula [Wed, 18 Sep 2013 14:19:45 +0000 (17:19 +0300)]
drm/i915: register backlight device also when backlight class is a module

Ville and I were wondering why his laptop was missing the
intel_backlight sysfs interface. Turns out we never register it when
CONFIG_BACKLIGHT_CLASS_DEVICE=m. This has been broken ever since the
i915 native backlight interface was added.

CC: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: write D_COMP using the mailbox
Paulo Zanoni [Tue, 10 Sep 2013 22:36:37 +0000 (19:36 -0300)]
drm/i915: write D_COMP using the mailbox

You can't write it using the MCHBAR mirror, the write will just get
dropped.

This should make us BSpec-compliant, but there's no real bug I could
reproduce that is fixed by this patch.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[danvet: Fix spelling mistake in the comment that Damien spotted.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: check for more ASLC interrupts
Paulo Zanoni [Tue, 17 Sep 2013 14:14:11 +0000 (11:14 -0300)]
drm/i915: check for more ASLC interrupts

Sometimes I see the "non asle set request??" message on my Haswell
machine, so I decided to get the spec and see if some bits are missing
from the mask. We do have some bits missing from the mask, so this
patch adds them, and the corresponding code to print "unsupported"
messages just like we do with the other bits we don't support.

But I still see the "non asle set request??" message on my machine :(

Also use the proper ASLC name to indicate the registers we're talking
about.

v2: - Properly set the new FAILED bits
    - Rename the old FAILED bits
    - Print everything we don't support

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: only report hpd connector status change when it actually changed
Jani Nikula [Tue, 17 Sep 2013 11:26:34 +0000 (14:26 +0300)]
drm/i915: only report hpd connector status change when it actually changed

This reduces dmesg noise when there's a glitch on the hpd line, or there
are more than one connectors on the same hpd line and only one of them
changes.

While at it, switch to use the friendly status names instead of numbers.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: WARN is the DP aux read or write is too big
Paulo Zanoni [Tue, 17 Sep 2013 14:14:10 +0000 (11:14 -0300)]
drm/i915: WARN is the DP aux read or write is too big

So far we control everything and nothing exceeds the current limits,
but (i) we never think about these limits when reviewing patches, (ii)
not all the callers check the return values and (iii) if we ever hit
any of these messages, we'll have to fix the code that added the bad
message.

The current limit for these messages is 20 since we only have 5 data
registers on all the current gens.

The checks inside intel_dp_aux_native_{write,read} are to prevent
buffer overflows. The check inside intel_dp_aux_ch is to prevent
writing past our 5 data registers.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Convert overlay double wide check over to pipe config
Ville Syrjälä [Wed, 4 Sep 2013 15:30:07 +0000 (18:30 +0300)]
drm/i915: Convert overlay double wide check over to pipe config

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Fix up pipe vs. double wide confusion
Ville Syrjälä [Wed, 4 Sep 2013 15:30:06 +0000 (18:30 +0300)]
drm/i915: Fix up pipe vs. double wide confusion

Double wide mode is only available on pipe A, except on GDG where
pipe B is also double wide capable.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: pipe_src_w must be even in LVDS dual channel, DVO ganged, and double wide...
Ville Syrjälä [Wed, 4 Sep 2013 15:30:05 +0000 (18:30 +0300)]
drm/i915: pipe_src_w must be even in LVDS dual channel, DVO ganged, and double wide mode

Pipe horizontal source size must be even when either LVDS dual channel
mode, DVO ganged mode, or pipe double wide mode is used.

We must round it down since we can never increase the user specified
viewport size.

The actual error from an odd pipe source width looks like a diagonal
shift, like you might get from a bad stride.

v2: s/ganaged/ganged/

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Check pixel clock limits on pre-gen4
Ville Syrjälä [Wed, 4 Sep 2013 15:30:04 +0000 (18:30 +0300)]
drm/i915: Check pixel clock limits on pre-gen4

We don't want to try to push the hardware beyond it's capabilities,
so check the pixel clock against the display core clock limit. Do
it for pre-gen4 for now since that's where we alread have the double
wide pixel clock limit check.

Let's assume that when double wide mode is enabled the max
pixel clock limit is also doubled.

FIXME: panel fitter downscaling probably affects the limit on
non-pch platforms too, so we'd need another version of
ilk_pipe_pixel_rate() to figure that out.

FIXME: should check the limits on all platforms. Also sprites
affect the max allowed pixel rate on some platforms, so we need
to eventually tie all the planes and pipes into one check in
the future. But we need plane state pre-compute before that can
happen.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Add double_wide readout and checking
Ville Syrjälä [Wed, 4 Sep 2013 15:30:03 +0000 (18:30 +0300)]
drm/i915: Add double_wide readout and checking

Read the double wide pipe information from hardware in
i9xx_get_pipe_config(), and check it in intel_pipe_config_compare()

For gen4+ double_wide is always false so the comparison can be done
on all platforms.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Move double wide mode handling into pipe_config
Ville Syrjälä [Wed, 4 Sep 2013 15:30:02 +0000 (18:30 +0300)]
drm/i915: Move double wide mode handling into pipe_config

Determine the need for double wide mode already in compute_config
stage as we need that information to figure out if horizontal
coordinates need to be adjusted.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: garbage-collect vlv refclk function
Daniel Vetter [Mon, 16 Sep 2013 09:29:34 +0000 (11:29 +0200)]
drm/i915: garbage-collect vlv refclk function

Simply inline the 100MHz default we're using. Having gunk around that
has leftover LVDS support on a platform that just doesn't have this
isn't of any use.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Fix cursor visibility checks also for the right/bottom screen edges
Ville Syrjälä [Wed, 4 Sep 2013 15:25:31 +0000 (18:25 +0300)]
drm/i915: Fix cursor visibility checks also for the right/bottom screen edges

First of all we should not be looking at fb->{width,height} as those do
not tell us what the actual pipe size is. Second of all we need to use
>= for the comparison.

So fix the comparison, and make use of the new pipe_src_{w,h} to
determine the real pipe source dimensions.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Fix cursor visibility check with negative coordinates
Ville Syrjälä [Wed, 4 Sep 2013 15:25:30 +0000 (18:25 +0300)]
drm/i915: Fix cursor visibility check with negative coordinates

When the cursor x coordinate is exactly -cursor_width, the cursor is
invisible. And obviously the same holds for the y coordinate and
cursor_height.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Document the inteded use of requested_mode
Ville Syrjälä [Wed, 4 Sep 2013 15:25:29 +0000 (18:25 +0300)]
drm/i915: Document the inteded use of requested_mode

Try to clarify the purpose of requested_mode.

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>
11 years agodrm/i915: re-layout intel_panel.c to obey 80 char limit
Daniel Vetter [Mon, 16 Sep 2013 21:43:45 +0000 (23:43 +0200)]
drm/i915: re-layout intel_panel.c to obey 80 char limit

Especially intel_gmch_panel_fitting was shifting way too much over the
right edge and also was way too long. So extract two helpers, one for
gen4+ and one for gen2/3. Now the entire thing is again almost
readable ...

Spurred by checkpatch freaking out about a Ville's pipeconfig rework
in intel_panel.c

Otherwise just two lines that needed appropriate breaking.

Not functional change in this patch.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Add explicit pipe src size to pipe config
Ville Syrjälä [Wed, 4 Sep 2013 15:25:28 +0000 (18:25 +0300)]
drm/i915: Add explicit pipe src size to pipe config

Rather that mess about with hdisplay/vdisplay from requested_mode, add
explicit pipe src size information to pipe config.

Now requested_mode is only really relevant for dvo/sdvo output timings.
For everything else either adjusted_mode or pipe src size should be
used.

In many places where we end up using pipe source size, we should
actually use the primary plane size, but we don't currently store
that information explicitly. As long as we treat primaries as full
screen only, we can get away with this. Eventually when we move
primaries over to drm_plane, we need to fix it all up.

v2: Add a comment to explain what pipe_src_{w,h} are
    Add a note about primary planes to commit message

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>
11 years agodrm/i915: Use adjusted_mode in DSI PLL calculations
Ville Syrjälä [Wed, 4 Sep 2013 15:25:27 +0000 (18:25 +0300)]
drm/i915: Use adjusted_mode in DSI PLL calculations

adjusted_mode contains our real timings, not requested_mode. Use the
correct thing in DSI PLL code.

Also constify adjusted_mode since we don't change it.

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>
11 years agodrm/i915: Use pipe config in sprite code
Ville Syrjälä [Wed, 4 Sep 2013 15:25:26 +0000 (18:25 +0300)]
drm/i915: Use pipe config in sprite code

Rather than dig up the pipe source size from crtc->mode, use
intel_crtc->config.requested_mode.

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>
11 years agodrm/i915: Make intel_crtc_active() available outside intel_pm.c
Ville Syrjälä [Wed, 4 Sep 2013 15:25:25 +0000 (18:25 +0300)]
drm/i915: Make intel_crtc_active() available outside intel_pm.c

Move intel_crtc_active() to intel_display.c and make it available
elsewhere as well.

intel_edp_psr_match_conditions() already has one open coded copy,
so replace that one with a call to intel_crtc_active().

v2: Copy paste a big comment from danvet's mail explaining
    when we can ditch the extra checks

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>
11 years agodrm/i915: Use adjusted_mode when checking conditions for PSR
Ville Syrjälä [Wed, 4 Sep 2013 15:25:24 +0000 (18:25 +0300)]
drm/i915: Use adjusted_mode when checking conditions for PSR

intel_edp_psr_match_conditions() currently looks at crtc->mode
when it really needs to look at adjusted_mode. Fix it.

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>
11 years agodrm/i915: Check the clock from adjusted mode in intel_crtc_active()
Ville Syrjälä [Wed, 4 Sep 2013 15:25:23 +0000 (18:25 +0300)]
drm/i915: Check the clock from adjusted mode in intel_crtc_active()

The clock in crtc->mode doesn't necessarily mean anything. Let's look
at the clock in adjusted_mode instead.

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>
11 years agodrm/i915: Use adjusted_mode appropriately when computing watermarks
Ville Syrjälä [Wed, 4 Sep 2013 15:25:22 +0000 (18:25 +0300)]
drm/i915: Use adjusted_mode appropriately when computing watermarks

Currently most of the watermark code looks at crtc->mode which is the
user requested mode. The only piece of information there that is
relevant is hdisplay, the rest must come from adjusted_mode. Convert
all of the code to use requested_mode and adjusted_mode from
pipe config appropriately.

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>
11 years agodrm/i915: Use adjusted_mode in intel_update_fbc()
Ville Syrjälä [Wed, 4 Sep 2013 15:25:21 +0000 (18:25 +0300)]
drm/i915: Use adjusted_mode in intel_update_fbc()

Check the mode flags from the adjusted_mode, not user requested mode.
The hdisplay/vdisplay check actually checkes the primary plane size,
so those still need to come from the user requested mode.

Extract both modes from pipe config instead of the drm_crtc.

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>
11 years agodrm/i915: Use adjusted_mode in HDMI 12bpc clock check
Ville Syrjälä [Wed, 4 Sep 2013 15:25:20 +0000 (18:25 +0300)]
drm/i915: Use adjusted_mode in HDMI 12bpc clock check

The pixel clock should come from adjusted_mode not requested_mode.
In this case the two should be the same as we don't currently
overwrite the clock in the case of HDMI. But let's make the code
safe against such things happening in the future.

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>
11 years agodrm/i915: Use adjusted_mode->clock in lpt_program_iclkip
Ville Syrjälä [Wed, 4 Sep 2013 15:25:19 +0000 (18:25 +0300)]
drm/i915: Use adjusted_mode->clock in lpt_program_iclkip

lpt_program_iclkip() wants to know the pixel clock. It should get that
information from adjusted_mode, not crtc->mode.

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>
11 years agodrm/i915: Grab the pixel clock from adjusted_mode not requested_mode
Ville Syrjälä [Wed, 4 Sep 2013 15:25:18 +0000 (18:25 +0300)]
drm/i915: Grab the pixel clock from adjusted_mode not requested_mode

i9xx_set_pipeconf() attempts to get the current pixel clock from
requested_mode. requested_mode.clock may be totally bogus, so the
clock should come from adjusted_mode.

v2: Dropped the intel_compute_config() hunk due to killing of the
    INTEL_FDI_FREQ check

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>
11 years agodrm/i915: Add fuzzy clock check for port_clock
Ville Syrjälä [Fri, 6 Sep 2013 20:29:08 +0000 (23:29 +0300)]
drm/i915: Add fuzzy clock check for port_clock

Check and dump for port_clock.

v2: Also dump port_clock

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Add PIPE_CONF_CHECK_CLOCK_FUZZY()
Ville Syrjälä [Fri, 6 Sep 2013 20:29:07 +0000 (23:29 +0300)]
drm/i915: Add PIPE_CONF_CHECK_CLOCK_FUZZY()

Add a new pipe config check macro PIPE_CONF_CHECK_CLOCK_FUZZY() to make
it trivial and error proof to compare clocks in a fuzzy manner.

v2: Drop extra curly braces

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Fix port_clock and adjusted_mode.clock readout all over
Ville Syrjälä [Fri, 13 Sep 2013 13:00:08 +0000 (16:00 +0300)]
drm/i915: Fix port_clock and adjusted_mode.clock readout all over

Now that adjusted_mode.clock no longer contains the pixel_multiplier, we
can kill the get_clock() callback and instead do the clock readout
in get_pipe_config().

Also i9xx_crtc_clock_get() can now extract the frequency of the PCH
DPLL, so use it to populate port_clock accurately for PCH encoders.
For DP in port A the encoder is still responsible for filling in
port_clock. The FDI adjusted_mode.clock extraction is kept in place
for some extra sanity checking, but we no longer need to pretend it's
also the port_clock.

In the encoder get_config() functions fill out adjusted_mode.clock
based on port_clock and other details such as the DP M/N values,
HDMI 12bpc and SDVO pixel_multiplier. For PCH encoders we will then
do an extra sanity check to make sure the dotclock we derived from
the FDI configuratiuon matches the one we derive from port_clock.

DVO doesn't exist on PCH platforms, so it doesn't need to anything
but assign adjusted_mode.clock=port_clock. And DDI is HSW only, so
none of the changes apply there.

v2: Use hdmi_reg color format to detect 12bpc HDMI case
v3: Set adjusted_mode.clock for LVDS too
v4: Rename ironlake_crtc_clock_get to ironlake_pch_clock_get,
    eliminate the useless link_freq variable.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Make i9xx_crtc_clock_get() work for PCH DPLLs
Ville Syrjälä [Mon, 9 Sep 2013 11:06:37 +0000 (14:06 +0300)]
drm/i915: Make i9xx_crtc_clock_get() work for PCH DPLLs

Add the 120MHz refernce clock case for PCH DPLLs.

Also determine the reference clock frequency more accurately by
checking for the PLLB_REF_INPUT_SPREADSPECTRUMIN refclk input
mode. The gen2 code already checked it, but it stil assumed a
fixed 66MHz refclk. Instead we need to consult the VBT for the
real value.

v2: Fix refclk for SSC panel case

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Make i9xx_crtc_clock_get() use dpll_hw_state
Ville Syrjälä [Fri, 13 Sep 2013 13:18:46 +0000 (16:18 +0300)]
drm/i915: Make i9xx_crtc_clock_get() use dpll_hw_state

We already extract the DPLL state to pipe_config, so let's make use of
it in i9xx_crtc_clock_get() and avoid the register reads.

This will also make the function closer to being useable with PCH DPLL
since the registers for those live in a different address.

Also kill the useless adjusted_mode.clock zeroing. It's already zero at
this point.

v2: Read out DPLL state in intel_crtc_mode_get()

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Add intel_dotclock_calculate()
Ville Syrjälä [Fri, 13 Sep 2013 12:59:11 +0000 (15:59 +0300)]
drm/i915: Add intel_dotclock_calculate()

Extract the code to calculate the dotclock from the link clock and M/N
values into a new function from ironlake_crtc_clock_get().

The new function can be used to calculate the dotclock for both FDI and
DP cases.

Also simplify the code a bit along the way.

v2: Don't forget about non-pch encoders in ironlake_crtc_clock_get()

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: clear opregon->lid_state after we unmap it
Paulo Zanoni [Thu, 12 Sep 2013 16:58:20 +0000 (13:58 -0300)]
drm/i915: clear opregon->lid_state after we unmap it

We don't seem to be using the pointer after it's unmapped, so this
patch doesn't fix any bug I can reproduce.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: add asserts for cursor disabled
Jani Nikula [Fri, 13 Sep 2013 08:03:08 +0000 (11:03 +0300)]
drm/i915: add asserts for cursor disabled

The cursor is supposed to be disabled during crtc mode set (disabled by
ctrc disable). Assert this is the case.

v2: move cursor disabled assert next to plane asserts (Ville)

Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
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>
11 years agodrm/i915: Fix l3 parity user buffer offset
Ben Widawsky [Fri, 13 Sep 2013 05:28:29 +0000 (22:28 -0700)]
drm/i915: Fix l3 parity user buffer offset

The buf pointer used during l3_write is just char *, therefore it does
not require the silly any addition of offset.

v2: Also fix i915_l3_read with a suggested logic from Ville

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Round l3 parity reads down
Ben Widawsky [Fri, 13 Sep 2013 05:28:28 +0000 (22:28 -0700)]
drm/i915: Round l3 parity reads down

We always read a register for l3 parity reads, and we don't really want
to ever let userspace trick us into giving back less than the dword.

Writes are okay because we assume everything will be 0 filled, and as
such, if a user really wants to write less than a dword, let them.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Remove extra "ring"
Ben Widawsky [Fri, 13 Sep 2013 05:28:27 +0000 (22:28 -0700)]
drm/i915: Remove extra "ring"

Sadly, this isn't the first time we've done this:
http://lists.freedesktop.org/archives/intel-gfx/2013-June/029065.html

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Make intel_fuzzy_clock_check() take in arbitrary clocks
Ville Syrjälä [Fri, 6 Sep 2013 20:29:02 +0000 (23:29 +0300)]
drm/i915: Make intel_fuzzy_clock_check() take in arbitrary clocks

We want to do fuzzy clock checks for other things besides
adjusted_mode.clock, so just pass two two clocks to compare
to intel_fuzzy_clock_check().

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Add state readout and checking for has_dp_encoder and dp_m_n
Ville Syrjälä [Tue, 10 Sep 2013 14:02:54 +0000 (17:02 +0300)]
drm/i915: Add state readout and checking for has_dp_encoder and dp_m_n

Add functions to read out the CPU and PCH transcoder M/N values,
and use them to fill out the pipe config dp_m_n information. And
while at it populate has_dp_encoder too.

Also refactor ironlake_get_fdi_m_n_config() to simply call the new
intel_cpu_transcoder_get_m_n() function.

v2: Remember the DDI

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Add support for pipe_bpp readout
Ville Syrjälä [Fri, 6 Sep 2013 20:29:00 +0000 (23:29 +0300)]
drm/i915: Add support for pipe_bpp readout

On CTG+ read out the pipe bpp setting from hardware and fill it into
pipe config. Also check it appropriately.

v2: Don't do the pipe_bpp extraction inside the PCH only code block on
    ILK+.
    Avoid the PIPECONF read as we already have read it for the
    PIPECONF_EANBLE check.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Make adjusted_mode.clock non-pixel multiplied
Ville Syrjälä [Fri, 6 Sep 2013 20:28:59 +0000 (23:28 +0300)]
drm/i915: Make adjusted_mode.clock non-pixel multiplied

It would be easier if adjusted_mode.clock would be the pipe pixel clock,
and it actually is, except for the cases where pixel_multiplier > 1.

So let's change intel_sdvo to use port_clock as the multiplied clock,
and then we can leave adjusted_mode.clock as pipe pixel clock.

v2: Improve port_clock documentation
    Rebased on top of SDVO pixel_multiplier fixes

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Don't factor in pixel multplier when deriving dotclock from link clock...
Ville Syrjälä [Fri, 6 Sep 2013 20:28:58 +0000 (23:28 +0300)]
drm/i915: Don't factor in pixel multplier when deriving dotclock from link clock and M/N values

We feed the non-multiplied clock to intel_link_compute_m_n(), so the
opposite operation should use the same order of operations. So we just
multiply by pixel_multiplier in the end now.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: don't save/restore LBB on Gen5+
Paulo Zanoni [Thu, 12 Sep 2013 16:58:17 +0000 (13:58 -0300)]
drm/i915: don't save/restore LBB on Gen5+

Because this PCI config register doesn't exist on Gen5+.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: move more code to __i915_drm_thaw
Paulo Zanoni [Thu, 12 Sep 2013 21:06:43 +0000 (18:06 -0300)]
drm/i915: move more code to __i915_drm_thaw

Both callers had code to sanitize the uncore and restore the GTT
mappings just before calling __i915_drm_thaw, so Chris suggested I
should unify the code.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: evict VM instead of everything
Ben Widawsky [Wed, 11 Sep 2013 21:57:50 +0000 (14:57 -0700)]
drm/i915: evict VM instead of everything

When reserving objects during execbuf, it is possible to come across an
object which will not fit given the current fragmentation of the address
space. We do not have any defragment in drm_mm, so the strategy is to
instead evict everything, and reallocate objects.

With the upcoming addition of multiple VMs, there is no point to evict
everything since doing so is overkill for the specific case mentioned
above.

Recommended-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
[danvet: One additional s/evict_everything/evict_vm/ to update a
comment in the code.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Extract vm specific part of eviction
Ben Widawsky [Wed, 11 Sep 2013 21:57:49 +0000 (14:57 -0700)]
drm/i915: Extract vm specific part of eviction

As we'll see in the next patch, being able to evict for just 1 VM is
handy.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Synchronize pread/pwrite with wait_rendering
Ben Widawsky [Wed, 11 Sep 2013 21:57:48 +0000 (14:57 -0700)]
drm/i915: Synchronize pread/pwrite with wait_rendering

lifted from Daniel:
pread/pwrite isn't about the object's domain at all, but purely about
synchronizing for outstanding rendering. Replacing the call to
set_to_gtt_domain with a wait_rendering would imo improve code
readability. Furthermore we could pimp pread to only block for
outstanding writes and not for reads.

Since you're not the first one to trip over this: Can I volunteer you
for a follow-up patch to fix this?

v2: Switch the pwrite patch to use \!read_only. This was a typo in the
original code. (Chris, Daniel)

Recommended-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
[danvet: Fix up the logic fumble - wait_rendering has a bool readonly
paramater, set_to_gtt_domain otoh has bool write. Breakage reported by
Jani Nikula, I've double-checked that igt/gem_concurrent_blt/prw-*
would have caught this.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915/vlv: re-enable hotplug detect based probing on VLV/BYT
Jesse Barnes [Tue, 10 Sep 2013 21:54:42 +0000 (14:54 -0700)]
drm/i915/vlv: re-enable hotplug detect based probing on VLV/BYT

Fixed with

commit 10603caacf599297c7da0c4f4db440d015b8131a
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Mon Aug 26 19:51:06 2013 -0300

    drm/i915: Apply the force-detect VGA w/a to Valleyview

Signed-off-by: Jesse Barnes <jbarnes@virtuosugeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Fix HSW sync flags to use pipe config adjusted_mode
Ville Syrjälä [Tue, 10 Sep 2013 14:03:41 +0000 (17:03 +0300)]
drm/i915: Fix HSW sync flags to use pipe config adjusted_mode

intel_ddi_enable_transcoder_func() picked the sync flags from crtc->mode
instead of the pipe config adjusted_mode. Fix the problem and hopefully
rid my HSW machine of the remaining pipe config warnings.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Remove the double-list iteration from bound_any()
Chris Wilson [Tue, 10 Sep 2013 10:27:37 +0000 (11:27 +0100)]
drm/i915: Remove the double-list iteration from bound_any()

The purpose of the function is to find out whether the object is still
bound in any address space. This can be easily checked by looking at the
vma currently associated with the object, rather than asking if any of
the global address spaces have an active vma on the object.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Write RING_TAIL once per-request
Chris Wilson [Sat, 10 Aug 2013 21:16:32 +0000 (22:16 +0100)]
drm/i915: Write RING_TAIL once per-request

Ignoring the legacy DRI1 code, and a couple of special cases (to be
discussed later), all access to the ring is mediated through requests.
The first write to a ring will grab a seqno and mark the ring as having
an outstanding_lazy_request. Either through explicitly adding a request
after an execbuffer or through an implicit wait (either by the CPU or by
a semaphore), that sequence of writes will be terminated with a request.
So we can ellide all the intervening writes to the tail register and
send the entire command stream to the GPU at once. This will reduce the
number of *serialising* writes to the tail register by a factor or 3-5
times (depending upon architecture and number of workarounds, context
switches, etc involved). This becomes even more noticeable when the
register write is overloaded with a number of debugging tools. The
astute reader will wonder if it is then possible to overflow the ring
with a single command. It is not. When we start a command sequence to
the ring, we check for available space and issue a wait in case we have
not. The ring wait will in this case be forced to flush the outstanding
register write and then poll the ACTHD for sufficient space to continue.

The exception to the rule where everything is inside a request are a few
initialisation cases where we may want to write GPU commands via the CS
before userspace wakes up and page flips.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Refactor max WM level
Ville Syrjälä [Fri, 30 Aug 2013 11:30:25 +0000 (14:30 +0300)]
drm/i915: Refactor max WM level

Pull the expected max WM level determinations out to a separate
function. Will have another user soon.

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>
11 years agodrm/i915: Use ilk_compute_wm_level to compute WM_PIPE values
Ville Syrjälä [Fri, 30 Aug 2013 11:30:24 +0000 (14:30 +0300)]
drm/i915: Use ilk_compute_wm_level to compute WM_PIPE values

Unify the code a bit to use ilk_compute_wm_level for all watermark
levels.

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>
11 years agodrm/i915: Constify some watermark data
Ville Syrjälä [Fri, 30 Aug 2013 11:30:23 +0000 (14:30 +0300)]
drm/i915: Constify some watermark data

hsw_pipe_wm_parameters and hsw_wm_maximums typically are read only. Make
them const.

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>
11 years agodrm/i915: Call intel_update_watermarks() in specific place during modeset
Ville Syrjälä [Tue, 10 Sep 2013 08:39:55 +0000 (11:39 +0300)]
drm/i915: Call intel_update_watermarks() in specific place during modeset

Make the call to intel_update_watermarks() just once or twice during
modeset. Ideally it should happen independently when each plane gets
enabled/disabled, but for now it seems better to keep it in central
place. We can improve things when we get all the planes sorted out
in a better way.

When enabling set up the watermarks just before the pipe is enabled.
And when disabling we need to wait until we've marked the crtc as
inactive, as otherwise intel_crtc_active() would still think the pipe
is enabled and the computed watermarks would reflect that.

v2: Pimp up the commit message a bit

Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Pass crtc to intel_update_watermarks()
Ville Syrjälä [Tue, 10 Sep 2013 08:40:40 +0000 (11:40 +0300)]
drm/i915: Pass crtc to intel_update_watermarks()

Passing the appropriate crtc to intel_update_watermarks() should help
in avoiding needless work in the future.

v2: Avoid clash with internal 'crtc' variable in some wm functions

Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: include hangcheck action and score in error_state
Mika Kuoppala [Fri, 6 Sep 2013 13:03:28 +0000 (16:03 +0300)]
drm/i915: include hangcheck action and score in error_state

Score and action reveals what all the rings were doing
and why hang was declared. Add idle state so that
we can distinguish between waiting and idle ring.

v2: - add idle as a hangcheck action
    - consensed hangcheck status to single line (Chris)
    - mark active explicitly when we are making progress (Chris)

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: ban badly behaving contexts
Mika Kuoppala [Fri, 30 Aug 2013 13:19:28 +0000 (16:19 +0300)]
drm/i915: ban badly behaving contexts

Now when we have mechanism in place to track which context
was guilty of hanging the gpu, it is possible to punish
for bad behaviour.

If context has recently submitted a faulty batchbuffers guilty of
gpu hang and submits another batch which hangs gpu in quick
succession, ban it permanently. If ctx is banned, no more
batchbuffers will be queued for execution.

There is no need for global wedge machinery anymore and
it would be unwise to wedge the whole gpu if we have multiple
hanging batches queued for execution. Instead just ban
the guilty ones and carry on.

v2: Store guilty ban status bool in gpu_error instead of pointers
    that might become danling before hang is declared.

v3: Use return value for banned status instead of stashing state
    into gpu_error (Chris Wilson)

v4: - rebase on top of fixed hang stats api
    - add define for ban period
    - rename commit and improve commit msg

v5: - rely context banning instead of wedging the gpu
    - beautification and fix for ban calculation (Chris)

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: add support for per-pipe power sequencing on vlv
Jani Nikula [Fri, 6 Sep 2013 04:40:05 +0000 (07:40 +0300)]
drm/i915: add support for per-pipe power sequencing on vlv

VLV has per-pipe PP registers. Set up power sequencing on mode set. The
connector init time setup is problematic, since we don't have a pipe at
that time. Cook up something.

v2:
 - use vlv_power_sequencer_pipe() also in _pp_{ctrl,stat}_reg()
 - use PANEL_PORT_SELECT_DPC_VLV (Ville)

v3: make checkpatch happier

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[danvet: Make checkpatch a bit more happier still ...]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: clean up power sequencing register port select definitions
Jani Nikula [Thu, 5 Sep 2013 13:44:46 +0000 (16:44 +0300)]
drm/i915: clean up power sequencing register port select definitions

Remove duplicates, add VLV specific macros for port B and C.

v2: also add PANEL_PORT_SELECT_DPC_VLV for clarity (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>
11 years agodrm/i915: move backlight enable later in vlv enable sequence
Jani Nikula [Thu, 5 Sep 2013 13:44:45 +0000 (16:44 +0300)]
drm/i915: move backlight enable later in vlv enable sequence

Follow-up to
commit 5004945f1d6c0282c0288afa89ad85d7f2bea4d5
Author: Jani Nikula <jani.nikula@intel.com>
Date:   Tue Jul 30 12:20:32 2013 +0300

    drm/i915: move encoder->enable callback later in VLV crtc enable

v2: Rebase on the renamed enable hooks, adding clarity (Ville)

Reference: http://mid.gmane.org/CAKMK7uFs9EMvMW8BnS24e5UNm1D7JrfVg3SD5SDFtVEamGfOOg@mail.gmail.com
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>
11 years agodrm/i915: name intel dp hooks per platform
Jani Nikula [Fri, 6 Sep 2013 04:38:29 +0000 (07:38 +0300)]
drm/i915: name intel dp hooks per platform

In line with the rest of the code base. No functional changes.

v2: also s/intel_pre_enable_dp/g4x_pre_enable_dp/ for consistency (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>
11 years agodrm/i915: Remove unused mode_fixup() vfunc of struct intel_dvo_dev_ops
Damien Lespiau [Thu, 5 Sep 2013 17:52:07 +0000 (18:52 +0100)]
drm/i915: Remove unused mode_fixup() vfunc of struct intel_dvo_dev_ops

It's totally unused, so remove the last mode_fixup appearance in i915.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Add additional pipe parameter for vlv_dpio_read and vlv_dpio_write. v2
Chon Ming Lee [Thu, 5 Sep 2013 12:41:49 +0000 (20:41 +0800)]
drm/i915: Add additional pipe parameter for vlv_dpio_read and vlv_dpio_write. v2

The patch doesn't contain functional change, but is to prepare for
future platform which has different DPIO phy.  The additional pipe
parameter will use to select which phy to target for.

v2: Update the commit message and add static for the new function.
(Jani/Ville)

Signed-off-by: Chon Ming Lee <chon.ming.lee@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915; Preallocate the lazy request
Chris Wilson [Wed, 4 Sep 2013 09:45:52 +0000 (10:45 +0100)]
drm/i915; Preallocate the lazy request

It is possible for us to be forced to perform an allocation for the lazy
request whilst running the shrinker. This allocation may fail, leaving
us unable to reclaim any memory leading to premature OOM. A neat
solution to the problem is to preallocate the request at the same time
as acquiring the seqno for the ring transaction. This means that we can
report ENOMEM prior to touching the rings.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Rename ring->outstanding_lazy_request
Chris Wilson [Wed, 4 Sep 2013 09:45:51 +0000 (10:45 +0100)]
drm/i915: Rename ring->outstanding_lazy_request

Prior to preallocating an request for lazy emission, rename the existing
field to make way (and differentiate the seqno from the request struct).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Kill IRONLAKE_FDI_FREQ check
Ville Syrjälä [Tue, 3 Sep 2013 10:31:38 +0000 (13:31 +0300)]
drm/i915: Kill IRONLAKE_FDI_FREQ check

ironlake_fdi_compute_config() already checks that we have enough
FDI bandwidth. And it doesn't just use a hardcoded value but takes
into account factors such as the actual FDI frequency, shared FDI
B/C lanes, etc.

Suggested-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Move Valleyview DP DPLL divisor calc to intel_dp_set_clock v2
Chon Ming Lee [Tue, 3 Sep 2013 17:30:38 +0000 (01:30 +0800)]
drm/i915: Move Valleyview DP DPLL divisor calc to intel_dp_set_clock v2

For DP pll settings, there is only two golden configs.  Instead of
running through the algorithm to determine it, hardcode the value and get it
determine in intel_dp_set_clock.

v2: Rework on the intel_limit compiler warning. (Jani)

Signed-off-by: Chon Ming Lee <chon.ming.lee@intel.com>
[danvet: Fix up checkpatch issues.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Modify DP set clock to accomodate more eDP timings v2
Chon Ming Lee [Tue, 3 Sep 2013 17:30:37 +0000 (01:30 +0800)]
drm/i915: Modify DP set clock to accomodate more eDP timings v2

eDP 1.4 supports 4-5 extra link rates in additional to current 2 link
rate.  Create a structure to store the DPLL divisor data to improve
readability.

v2: Fix the gen4_dpll/pch_dpll initialization to C99
designated initializers, and use a single loop for all platforms. (Jani and Daniel)

Signed-off-by: Chon Ming Lee <chon.ming.lee@intel.com>
[danvet: Fix up checkpatch warnings.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: do display power state notification on crtc enable/disable
Jani Nikula [Fri, 30 Aug 2013 16:40:32 +0000 (19:40 +0300)]
drm/i915: do display power state notification on crtc enable/disable

The spec says to notify prior to power down and after power up. It is
unclear whether it makes a difference.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: add opregion function to notify bios of adapter power state
Jani Nikula [Fri, 30 Aug 2013 16:40:31 +0000 (19:40 +0300)]
drm/i915: add opregion function to notify bios of adapter power state

Notifying the bios lets it enter power saving states.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: add opregion function to notify bios of encoder enable/disable
Jani Nikula [Fri, 30 Aug 2013 16:40:30 +0000 (19:40 +0300)]
drm/i915: add opregion function to notify bios of encoder enable/disable

The bios interface seems messy, and it's hard to tell what the bios
really wants. At first, only add support for DDI based machines (hsw+),
and see how it turns out.

The spec says to notify prior to power down and after power up. It is
unclear whether it makes a difference.

v2:
 - squash notification function and callers patches together (Daniel)
 - move callers to haswell_crtc_{enable,disable} (Daniel)
 - rename notification function (Chris)

v3:
 - separate notification function and callers again, as it's not clear
   whether the display power state notification is the right thing to do
   after all

v4: per Paulo's review:
 - drop LVDS
 - WARN on unsupported encoder types

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: expose intel_ddi_get_encoder_port()
Jani Nikula [Fri, 30 Aug 2013 16:40:28 +0000 (19:40 +0300)]
drm/i915: expose intel_ddi_get_encoder_port()

In preparation for followup work.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: add plumbing for SWSCI
Jani Nikula [Mon, 2 Sep 2013 07:38:59 +0000 (10:38 +0300)]
drm/i915: add plumbing for SWSCI

SWSCI is a driver to bios call interface.

This checks for SWSCI availability and bios requested callbacks, and
filters out any calls that shouldn't happen. This way the callers don't
need to do the checks all over the place.

v2: silence some checkpatch nagging

v3: set PCI_SWSCI bit 0 to trigger interrupt (Mengdong Lin)

v4: remove an extra #define (Jesse)

v5: spec says s/w is responsible for clearing PCI_SWSCI bit 0 too

v6: per Paulo's review and more:
 - fix sub-function mask
 - add exit parameter
 - add define for set panel details call
 - return more errors from swsci
 - clean up the supported/requested callbacks bit masks mess
 - use DSLP for timeout
 - fix build for CONFIG_ACPI=n

v7: tiny adjustment of requested vs. supported SBCB callbacks handling (Paulo)

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: It's its!
Damien Lespiau [Fri, 30 Aug 2013 13:40:26 +0000 (14:40 +0100)]
drm/i915: It's its!

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Acked-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Rearrange the comments in i915_add_request()
Chris Wilson [Mon, 26 Aug 2013 22:50:54 +0000 (19:50 -0300)]
drm/i915: Rearrange the comments in i915_add_request()

The comments were a little out-of-sequence with the code, forcing the
reader to jump around whilst reading. Whilst moving the comments around,
add one to explain the context reference.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Do not add an interrupt for a context switch
Chris Wilson [Mon, 26 Aug 2013 22:50:53 +0000 (19:50 -0300)]
drm/i915: Do not add an interrupt for a context switch

We use the request to ensure we hold a reference to the context for the
duration that it remains in use by the ring. Each request only holds a
reference to the current context, hence we emit a request after
switching contexts with the final reference to the old context. However,
the extra interrupt caused by that request is not useful (no timing
critical function will wait for the context object), instead the overhead
of servicing the IRQ shows up in some (lightweight) benchmarks. In order
to keep the useful property of using the request to manage the context
lifetime, we want to add a dummy request that is associated with the
interrupt from the subsequent real request following the batch.

The extra interrupt was added as a side-effect of using
i915_add_request() in

commit 112522f6789581824903f6f72082b5b841a7f0f9
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Thu May 2 16:48:07 2013 +0300

    drm/i915: put context upon switching

v2: Daniel convinced me that the request here was solely for context
lifetime tracking and that we have the active ref to keep the object
alive whilst the MI_SET_CONTEXT. So the only concern then is which
context should get the blame for MI_SET_CONTEXT failing. The old scheme
added a request for the old context so that any hang upto and including
the switch away would mark the old context as guilty. Now any hang here
implicates the new context. However since we have already gone through a
complete flush with the last context in its last request, and all that
lies in no-man's-land is an invalidate flush and the MI_SET_CONTEXT, we
should be safe in not unduly placing blame on the new context.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Fix list corruption in vma_unbind
Daniel Vetter [Thu, 29 Aug 2013 17:50:31 +0000 (19:50 +0200)]
drm/i915: Fix list corruption in vma_unbind

The saga around the breadcrumb vmas used by execbuf continues ...

This time around we've managed to unconditionally move the object to
the unbound list on the last vma unbind even though it might never
have been on either the bound or unbound list. Hilarity ensued.

Chris Wilson tracked this one down but compared to his patches I've
simply opted to completely separate the unbound case for not-yet bound
vmas. Otherwise we imo end up with semantically hard to parse checks
around the list_move_tail(global_list, ...).

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ben Widawsky <ben@bwidawsk.net>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68462
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Restore the preliminary HW check.
Ben Widawsky [Fri, 23 Aug 2013 23:00:07 +0000 (16:00 -0700)]
drm/i915: Restore the preliminary HW check.

We still maintain code internally that cares about preliminary support.
Leaving the check here doesn't hurt anyone, and should keep things more
in line.

This time around, stick the info in the intel_info structure, and also
change the error from DRM_ERROR->DRM_INFO.

This is a partial revert of:
commit 590e4df8c82e6c2707ae12ba6672ab6fb9cd4b89
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date:   Wed May 8 10:45:15 2013 -0700

    drm/i915: VLV support is no longer preliminary

Daniel, I'll provide the fix ups for internal too if/when you merge
this (if you want).

Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Report enabled slices on Haswell GT3
Rodrigo Vivi [Wed, 28 Aug 2013 19:45:46 +0000 (16:45 -0300)]
drm/i915: Report enabled slices on Haswell GT3

Batchbuffers constructed by userspace can conditionalise their URB
allocations through the use of the MI_SET_PREDICATE command. This
command can read the MI_PREDICATE_RESULT_2 register to see how many
slices are enabled on GT3, and by virtue of the result, scale their
memory allocations to fit enabled memory.

Of course, this only works if the kernel sets the appropriate bit in the
register first.

v2: Better commit subject and message by Chris Wilson.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Credits-to: Yejun Guo <yejun.guo@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915/dsi: s/size_t/int/
Daniel Vetter [Wed, 28 Aug 2013 08:38:49 +0000 (10:38 +0200)]
drm/i915/dsi: s/size_t/int/

This fixes a printf warn from gcc:

drivers/gpu/drm/i915/intel_dsi_cmd.c: In function ‘dsi_vc_send_long’:
drivers/gpu/drm/i915/intel_dsi_cmd.c:181:2: warning: format ‘%x’ expects argument of type ‘unsigned int’, but argument 7 has type ‘size_t’ [-Wformat=]

Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: initialize DSI output on VLV
Jani Nikula [Tue, 27 Aug 2013 12:12:26 +0000 (15:12 +0300)]
drm/i915: initialize DSI output on VLV

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>
11 years agodrm/i915: Parse the MIPI related VBT Block and store relevant info
Shobhit Kumar [Tue, 27 Aug 2013 12:12:25 +0000 (15:12 +0300)]
drm/i915: Parse the MIPI related VBT Block and store relevant info

Initial parsing of the VBT MIPI block. For now, just store the panel id
if found.

Note: Again there seems to be no documentation for this piece of lore.
The doc situation for byt+ is just a bad joke :(

Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Band Gap WA
Shobhit Kumar [Tue, 27 Aug 2013 12:12:24 +0000 (15:12 +0300)]
drm/i915: Band Gap WA

Note: No one seems to have docs for this, so this patch here is just
unreviewed black magic :(

Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: ymohanma <yogesh.mohan.marimuthu@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
[danvet: Add note about the doc situation.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>