Commit Graph

1318 Commits

Author SHA1 Message Date
Chris Wilson
cc98b413c1 drm/i915: Track when an object is pinned for use by the display engine
The display engine has unique coherency rules such that it requires
special handling to ensure that all writes to cursors, scanouts and
sprites are clflushed. This patch introduces the infrastructure to
simply track when an object is being accessed by the display engine.

v2: Explain the is_pin_display() magic as the sources for obj->pin_count
and their individual rules is not obvious. (Ville)

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-08-10 11:19:51 +02:00
Jesse Barnes
6f6005a52b drm/i915: expose HDMI connectors on port C on BYT
Ryan noticed that on his board, HDMI was wired up to port C but not
exposed by the kernel, which had only expected DP on that port.  Fix
that up by enumerating both ports if possible.

Tested-by: "Matsumura, Ryan" <ryan.matsumura@intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: Fix up the whitespace fail. Tsk.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-08-09 19:02:27 +02:00
Damien Lespiau
e7457a9a33 drm/i915: Make intel_set_mode() static
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-08-09 10:46:15 +02:00
Damien Lespiau
1414f6c049 drm/i915: Remove intel_modeset_disable()
Caught by the dead code police!

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-08-09 10:46:10 +02:00
Damien Lespiau
9237329d83 drm/i915: Make intel_encoder_dpms() static
And also fix a small typo in the intel_encoder_dpms() comment.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-08-09 10:46:03 +02:00
Chris Wilson
ddfe15677d drm/i915: Export intel_framebuffer_fini
Rather than open-code the teardown of a framebuffer, export the routine
from intel_display.c. This then make intel_fbdev symmetric in its use of
the common intel_framebuffer routines to initialise and clean up the
struct intel_framebuffer. (And new features need only be added in one
location!)

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-08-06 20:08:50 +02:00
Imre Deak
2960bc9cce drm/i915: make user mode sync polarity setting explicit
Userspace can pass a mode with an unspecified vsync/hsync polarity
setting. All encoders in the Intel driver take this to mean a negative
polarity setting. The HW readout/state checker code on the other hand
needs these flags to be explicitly set, otherwise the state checker will
WARN about the mismatch.

Get rid of the WARN by making the polarity setting explicit in the
adjusted mode flags based on the requested mode flags. This will keep
the existing behavior otherwise.

Note that we could guess from the other timing parameters whether the
user wanted a VESA or other standard mode and set the polarity
accordingly. This is what the NV driver does
(drivers/gpu/drm/nouveau/dispnv04/crtc.c), but I think that's not very
exact and would change the existing behavior of the Intel driver.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=65442
Signed-off-by: Imre Deak <imre.deak@intel.com>
Tested-by: cancan,feng <cancan.feng@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-08-05 19:04:05 +02:00
Jani Nikula
5004945f1d drm/i915: move encoder->enable callback later in VLV crtc enable
VLV wants encoder enabling before the pipe is up. With the previously
rearranged VLV DP and HDMI ->pre_enable and ->enable callbacks in place,
this no longer depends on the early ->enable hook call. Move the
->enable call at the end of the sequence, similar to the crtc enable on
other platforms. This will be needed e.g. for moving the eDP backlight
enabling to the right place in the sequence, currently done too early on
VLV.

There should be no functional changes.

v2: Rebase.

v3: Explain why this is needed in the commit message (Chris).

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-08-05 19:04:04 +02:00
Chris Wilson
0980a60fba drm/i915: Acquire dpio_lock for VLV sideband programming in DP/HDMI
Otherwise we get flooded by the kernel warning us that we are doing
long sequences of IO without serialisation. For example,

 WARNING: CPU: 0 PID: 11136 at drivers/gpu/drm/i915/intel_sideband.c:40 vlv_sideband_rw+0x48/0x1ef()
 Modules linked in:
 CPU: 0 PID: 11136 Comm: kworker/u2:0 Tainted: G        W    3.11.0-rc2+ #4
 Call Trace:
  [<c2028564>] ?  warn_slowpath_common+0x63/0x78
  [<c227ad43>] ?  vlv_sideband_rw+0x48/0x1ef
  [<c20285dd>] ?  warn_slowpath_null+0xf/0x13
  [<c227ad43>] ?  vlv_sideband_rw+0x48/0x1ef
  [<c227b060>] ?  vlv_dpio_write+0x1c/0x21
  [<c2262b3b>] ?  intel_dp_set_signal_levels+0x24a/0x385
  [<c2264909>] ?  intel_dp_complete_link_train+0x25/0x1d1
  [<c2264c55>] ?  intel_dp_check_link_status+0xf7/0x106
  [<c2238ced>] ?  i915_hotplug_work_func+0x17b/0x221
  [<c203a204>] ?  process_one_work+0x12e/0x210
  [<c203a5e4>] ?  worker_thread+0x116/0x1ad
  [<c203a4ce>] ?  rescuer_thread+0x1cb/0x1cb
  [<c203d8f5>] ?  kthread+0x67/0x6c
  [<c2457ebb>] ?  ret_from_kernel_thread+0x1b/0x30
  [<c203d88e>] ?  init_completion+0x18/0x18

v2: Retire the locking in vlv_crtc_enable() and do it close to the meat.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
[danvet: Squash in a s/mutex_lock/mutex_unlock/ fixup spotted by the 0
day kernel build/coccinelle and reported by Dan Carpenter.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-08-05 19:04:02 +02:00
Jesse Barnes
b6dfdc9b7f drm/i915: enable IPS for bpp <= 24
Art confirms that this should work fine.  Since most panels are 18bpp
with dithering from 24bpp, the existing code wouldn't be enabled in most
cases.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-08-05 19:04:02 +02:00
Stéphane Marchesin
b3ae96a8ea drm/i915: Remove useless define
Signed-off-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-08-04 21:29:57 +02:00
Daniel Vetter
135c81b8c3 drm/i915: clean up crtc timings computation
In the old days of the crtc helpers we've only had the encoder and
crtc ->mode_fixup callbacks. So when the lvds connector wanted to
adjust the crtc timings it had to set a driver-private mode flag to
tell the crtc mode fixup code to not overwrite them with the generic
ones.

When converting things to the new infrastructure I've kept the entire
logic and only moved the flag to pipe_config->timings_set. But this
logic is pretty tricky and already caused regressions:

commit 21d8a4756a
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Jul 12 08:07:30 2013 +0200

    drm/i915: fix pfit regression for non-autoscaled resolutions

So take advantage of the flexibility our own modeset infrastructure
affords us and prefill default crtc timings. This allows us to rip out
->timings_set. Note that we overwrite things again when retrying the
pipe config computation due to bandwidth constraints to avoid bogus
crtc timings if the encoder only does relative adjustments (which is
how the pfit code works). Only a theoretical concern though since
platforms where we retry (pch-split platforms) do not need
adjustements (since only the old gmch pfit needs that). But let's
better be safe than sorry.

Since we now initialize the crtc timings before calling the
encoder->compute_config functions the crtc initialization in the gmch
pfit code is now redudant and so can be removed.

Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
[danvet: Add a paragraph to the commit message to explain why we can
ditch the crtc timings initialization call from the gmch pfit code, to
answer a question from Rodrigo's review.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-08-04 21:25:27 +02:00
Daniel Vetter
36f2d1f151 drm/i915: rip out legacy encoder->mode_set callback
The encoder->mode_set callback from the crtc helpers is now completely
unused in our driver. Good riddance!

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-08-04 21:25:26 +02:00
Daniel Vetter
efea6e8e49 drm/i915: rip out legacy encoder->mode_fixup logic
Everyone is now using our own ->compute_config callback, which means
we can now also make that callback mandatory.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-08-04 21:25:20 +02:00
Daniel Vetter
257a7ffcfa drm/i915: fix pnv display core clock readout out
We need the correct clock to accurately assess whether we need to
enable the double wide pipe mode or not.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Stéphane Marchesin <marcheu@chromium.org>
Cc: Stuart Abercrombie <sabercrombie@google.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-26 19:54:46 +02:00
Chris Wilson
907b28c56e drm/i915: Colocate all GT access routines in the same file
Currently, the register access code is split between i915_drv.c and
intel_pm.c. It only bares a superficial resemblance to the reset of the
powermanagement code, so move it all into its own file. This is to ease
further patches to enforce serialised register access.

v2: Scan for random abuse of I915_WRITE_NOTRACE
v3: Take the opportunity to rename the GT functions as uncore. Uncore is
the term used by the hardware design (and bspec) for all functions
outside of the GPU (and CPU) cores in what is also known as the System
Agent.
v4: Rebase onto SNB rc6 fixes

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
[danvet: Wrestle patch into applying and inline
intel_uncore_early_sanitize (plus move the old comment to the new
function). Also keep the _santize postfix for intel_uncore_sanitize.]
[danvet: Squash in fixup spotted by Chris on irc: We need to call
intel_pm_init before intel_uncore_sanitize since the later will call
cancel_work on the delayed rps setup work the former initializes.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-25 15:21:50 +02:00
Daniel Vetter
cb54b53ada Merge commit 'Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux'
This backmerges Linus' merge commit of the latest drm-fixes pull:

commit 549f3a1218
Merge: 42577ca 058ca4a
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Tue Jul 23 15:47:08 2013 -0700

    Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

We've accrued a few too many conflicts, but the real reason is that I
want to merge the 100% solution for Haswell concurrent registers
writes into drm-intel-next. But that depends upon the 90% bandaid
merged into -fixes:

commit a7cd1b8fea
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Fri Jul 19 20:36:51 2013 +0100

    drm/i915: Serialize almost all register access

Also, we can roll up on accrued conflicts.

Usually I'd backmerge a tagged -rc, but I want to get this done before
heading off to vacations next week ;-)

Conflicts:
	drivers/gpu/drm/i915/i915_dma.c
	drivers/gpu/drm/i915/i915_gem.c

v2: For added hilarity we have a init sequence conflict around the
gt_lock, so need to move that one, too. Spotted by Jani Nikula.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-25 15:18:41 +02:00
Paulo Zanoni
be256dc702 drm/i915: add functions to disable and restore LCPLL
For now there are no callers, but these functions are going to be
needed for the code that allows Package C8+. Other future features may
also require this code.

Also merge the commit which introduced assert_can_disable_lcpll and
had the following commit message:

Most of the hardware needs to be disabled before LCPLL is disabled, so
let's add a function to assert some of items listed in the "Display
Sequences for LCPLL disabling" documentation.

The idea is that hsw_disable_lcpll should not disable the hardware,
the callers need to take care of calling hsw_disable_lcpll only once
everything is already disabled.

v2: - Rebase.
    - Fix D_COMP wait timeout.
v3: - Use wait_for_atomic_use (Ben)
    - Remove/add a useless/needed POSTING_READ (Ben)
    - Early return in case LCPLL is already restored (Ben)
    - Add ndelay(100) (Ben)
v4: - Merge the commit that added assert_can_disable_lcpll (Ben)
    - Add interrupt assertions (Ben)

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
[danvet: Fix compile fail since there's no HAS_LP_PCH yet.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-24 10:37:10 +02:00
Paulo Zanoni
47701c3ba2 drm/i915: disable CLKOUT_DP when it's not needed
We currently don't support HDMI clock bending nor use SSC for DP or
HDMI on Haswell, so the only case where we need CLKOUT_DP is for VGA.

v2: - Replace the IS_ULT check for LPT-LP
    - Simplify GEN0/DBUFF0 check due to change on the previous patch
    - Also check for SBI_SSCCTL_DISABLE (Ben).

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-24 10:37:09 +02:00
Paulo Zanoni
2fa86a1fea drm/i915: extend lpt_enable_clkout_dp
Now it implements 3 different sequences from BSpec and also has
support for ULT.

v2: - Change IS_ULT checks for LPT-LP checks
    - Add check for LPT-LP + with_fdi (Ben)
    - Merge DBUFF0/GEN0 bit definitions since they're the same
      register (Ben)
    - DBUFF0 (1<<0) is Disable, not Enable

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-24 10:37:09 +02:00
Kamal Mostafa
e85843bec6 drm/i915: quirk no PCH_PWM_ENABLE for Dell XPS13 backlight
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=47941
BugLink: https://bugs.launchpad.net/bugs/1163720
BugLink: https://bugs.launchpad.net/bugs/1162026

Some machines suffer from non-functional backlight controls if
BLM_PCH_PWM_ENABLE is set, so provide a quirk to avoid doing so.
Apply this quirk to Dell XPS 13 models.

Tested-by: Eric Griffith <EGriffith92@gmail.com>
Tested-by: Kent Baxley <kent.baxley@canonical.com>
Cc: <stable@vger.kernel.org> # v3.8+
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-20 10:52:53 +02:00
Paulo Zanoni
bf8fa3d383 drm/i915: extract lpt_enable_clkout_dp from lpt_init_pch_refclk
The next step is to modify lpt_enable_clkout_dp to enable support for
"Sequence to enable CLKOUT_DP" and "Sequence to enable CLKOUT_DP
without spread".

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-19 08:54:03 +02:00
Paulo Zanoni
f31f2d55eb drm/i915: extract FDI mPHY functions from lpt_init_pch_refclk
Because lpt_init_pch_refclk implements the "Sequence to enable
CLKOUT_DP for FDI usage and configure PCH FDI I/O", which is very
similar to "Sequence to enable CLKOUT_DP" and "Sequence to enable
CLKOUT_DP without spread". With the extracted functions we can more
easily implement the two missing sequences.

v2: Rebase (WaMPhyProgramming:hsw comment).

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-19 08:53:49 +02:00
Paulo Zanoni
0ff066a9e4 drm/i915: remove SDV support from lpt_pch_init_refclk
The machines that fall in the "is_sdv" case are some very early
pre-production steppings. This patch may break VGA output after
suspend/resume on these machines.

Even the documentation for the is_sdv cases was removed from BSpec.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-19 08:53:18 +02:00
Rodrigo Vivi
4906557eb3 drm/i915: Hook PSR functionality
PSR must be enabled after transcoder and port are running.
And it is only available for HSW.

v2: move enable/disable to intel_ddi
v3: The spec suggests PSR should be disabled even before backlight (by pzanoni)
v4: also disabling and enabling whenever panel is disabled/enabled.
v5: make it last patch to avoid breaking whenever bisecting. So calling for
    update and force exit came to this patch along with enable/disable calls.
v6: Remove unused and unecessary psr_enable/disable calls, as notice by Paulo.

CC: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
[danvet: Drop the psr exit code in the busy ioctl since I didn't merge
that part of the infrastructure yet - it needs more thought.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-18 10:34:54 +02:00
Chris Wilson
2e57f47d31 drm/i915: Fix dereferencing invalid connectors in is_crtc_connector_off()
In commit e3de42b684
Author: Imre Deak <imre.deak@intel.com>
Date:   Fri May 3 19:44:07 2013 +0200

    drm/i915: force full modeset if the connector is in DPMS OFF mode

a new function was added that walked over the set of connectors to see
if any of the currently associated CRTC was switched off. This function
walked an array of connectors, rather than the array of pointers to
connectors contained in the drm_mode_set - i.e. it was dereferencing far
past the end of the first connector. This only becomes an issue if we
attempt to use a clone mode (i.e. more than one connector per CRTC) such
that set->num_connectors > 1.

Reported-by: Timo Aaltonen <tjaalton@ubuntu.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=65927
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Egbert Eich <eich@suse.de>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-17 13:24:18 +02:00
Daniel Vetter
35c95375f6 drm/i915: Sanitize shared dpll state
There seems to be no limit to the amount of gunk the firmware can
leave behind. Some platforms leave pch dplls on which are not in
active use at all. The example in the bug report is a Apple Macbook
Pro.

Note that this escape scrunity of the hw state checker until we've
tried to use this enabled, but unused pll since we did only check for
the inverse case of a in-used, but disabled pll.

v2: Add a WARN in the pll state checker which would have caught this
case.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=66952
Reported-and-tested-by: shui yangwei <yangweix.shui@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-17 11:49:21 +02:00
Damien Lespiau
19bc678a60 drm/i915: We implement WaMPhyProgramming on Haswell
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>
2013-07-16 10:32:32 +02:00
Daniel Vetter
50b44a449f drm/i915: clear DPLL reg when disabling i9xx dplls
Toghether with the hw state readout this should catch cases where we
don't properly updated the pll state (either in sw or hw). At least
for the shared dpll code the equivalent tricke helped a lot in
catching bugs.

Also rename the function prefix, it's not a generic piece of
infrastructure.

Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-12 18:54:02 +02:00
Daniel Vetter
3ad8a208ab drm/i915: Fix up cpt pixel multiplier enable sequence
Bspec for the "DPLL HDMI multiplier" field says:

"Restriction : The DPLL must be enabled and stable before setting these bits.
These bits must be programmed after DPLL_SEL is programmed."

There is apparently no restriction on programming the DPLL_SEL
register wrt the DPLL. So let's just move that up before we enable the
pch dpll.

Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-12 18:54:01 +02:00
Daniel Vetter
426115cf5d drm/i915: clean up vlv ->pre_pll_enable and pll enable sequence
No need to call the ->pre_pll_enable hook twice if we don't enable the
dpll too early. This should make Jani a bit less grumpy.

v2: Rebase on top of the newly-colored BUG_ONs.

v3: Reinstate the lost write of the DPLL_MD register, spotted by Imre.

Cc: Imre Deak <imre.deak@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-12 18:54:01 +02:00
Mika Kuoppala
84734a049d drm/i915: move error state to own compilation unit
Move error state generation and stringification to it's
own compilation unit. Sysfs also uses this so it can't be
under CONFIG_DEBUG_FS

This fixes a regression introduced in

commit ef86ddced7
Author: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Date:   Thu Jun 6 17:38:54 2013 +0300

    drm/i915: add error_state sysfs entry

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=66814
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-12 18:53:13 +02:00
Damien Lespiau
08e2a7de8e drm/i915: Use for_each_pipe() when possible
Came accross two open coding of for_each_pipe(), might as well use the
macro.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-11 21:53:10 +02:00
Daniel Vetter
0692282181 drm/i915: fix up readout of the lvds dither bit on gen2/3
It's in the PFIT_CONTROL register, but very much associated with the
lvds encoder. So move the readout for it (in the case of an otherwise
disabled pfit) from the pipe to the lvds encoder's get_config
function.

Otherwise we get a pipe state mismatch if we use pipe B for a non-lvds
output and we've left the dither bit enabled behind us. This can
happen if the BIOS has set the bit (some seem to unconditionally do
that, even in the complete absence of an lvds port), but not enabled
pipe B at boot-up. Then we won't clear the pfit control register since
we can only touch that if the pfit is associated with our pipe in the
crtc configuration - we could trample over the pfit state of the other
pipe otherwise since it's shared. Once pipe B is enabled we notice
that the 6to8 dither bit is set and complain about the mismatch.

Note that testing indicates that we don't actually need to set this
bit when the pfit is disabled, dithering on 18bpp panels seems to work
regardless. But ripping that code out is not something for a bugfix
meant for -rc kernels.

v2: While at it clarify the logic in i9xx_get_pfit_config, spurred by
comments from Chris on irc.

v3: Use Chris suggestion to make the control flow in
i9xx_get_pfit_config easier to understand.

v4: Kill the extra line, spotted by Chris.

Reported-by: Knut Petersen <Knut_Petersen@t-online.de>
Cc: Knut Petersen <Knut_Petersen@t-online.de>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
References: http://lists.freedesktop.org/archives/intel-gfx/2013-July/030092.html
Tested-by: Knut Petersen <Knut_Petersen@t-online.de>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-11 19:21:27 +02:00
Ville Syrjälä
885b012008 drm/i915: Fix VLV DP RBR/HDMI/DAC PLL LPF coefficients
I just got confirmation that we're using some old values for the PLL
LPF coefficients for DP RBR/HDMI/DAC on VLV. The
VLV2A0_DP_eDP_HDMI_DPIO_driver_vbios_notes_9 document lists both values
by mistake, and apparently we had picked the wrong one. Change the
coefficients to the recommended values.

Changing the value doesn't appear to destabilize the VGA output picture
even with my sensitive HP ZR24w display. Also HDMI output to my TV still
works fine.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-09 22:27:33 +02:00
Daniel Vetter
5d536e2858 drm/i915: dvo needs a P2 divisor of 4
Section 1.5.4, "DPLL A Control Register" from Bspec about bit 23
"FPA0/A1 P2 Clock Divide":

0 = Divide by 2
1 = Divide by 4. This bit must be set in DVO non-gang mode

So copy the current limits (which should be good for i8xx) and create
a new set for dvo encoders.

Reviewed-by: Chris Wilson <chris@chris-wilson.oc.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-08 22:04:38 +02:00
Daniel Vetter
4a33e48d0e drm/i915: fix dvo DPLL regression
I've missed that intel_dvo_mode_set changes the dpll configuration.
Hence when I've reworked the sequence to only enable the dpll in the
crtc_enable callback in

commit 66e3d5c099
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Sun Jun 16 21:24:16 2013 +0200

    drm/i915: move i9xx dpll enabling into crtc enable function

that special DVO bit was lost. Some BSpec reading confirms that it's
only needed for DVO encoders. Section 1.5.4, "DPLL A Control Register"
for bit 30:

"2X Clock Enable. When driving In non-gang DVO modes such as a
connected flat panel or TV, a 2X" version of the clock is needed. When
not using the 2X output it should be disabled. This bit cannot be set
when driving the integrated LVDS port on devices such as Montara-GM."

Fix this regression up.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=66516
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reported-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Partially-tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-08 22:04:37 +02:00
Ben Widawsky
f343c5f647 drm/i915: Getter/setter for object attributes
Soon we want to gut a lot of our existing assumptions how many address
spaces an object can live in, and in doing so, embed the drm_mm_node in
the object (and later the VMA).

It's possible in the future we'll want to add more getter/setter
methods, but for now this is enough to enable the VMAs.

v2: Reworked commit message (Ben)
Added comments to the main functions (Ben)
sed -i "s/i915_gem_obj_set_color/i915_gem_obj_ggtt_set_color/" drivers/gpu/drm/i915/*.[ch]
sed -i "s/i915_gem_obj_bound/i915_gem_obj_ggtt_bound/" drivers/gpu/drm/i915/*.[ch]
sed -i "s/i915_gem_obj_size/i915_gem_obj_ggtt_size/" drivers/gpu/drm/i915/*.[ch]
sed -i "s/i915_gem_obj_offset/i915_gem_obj_ggtt_offset/" drivers/gpu/drm/i915/*.[ch]
(Daniel)

v3: Rebased on new reserve_node patch
Changed DRM_DEBUG_KMS to actually work (will need fixing later)

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-08 22:04:34 +02:00
Daniel Vetter
d94ab06827 drm/i915: Explicitly cast pipe -> intel_dpll_id
We only do this on IBX where there's a fixed pch dpll to pipe
assignment. Being explicit about it can't really hurt and makes
sparse happy.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-05 23:47:09 +02:00
Daniel Vetter
e143a21c4d drm/i915: explicitly cast pipe -> cpu_transcoder
This makes sparse happy and also makes it a bit more obvious where we
pull off this trick - after all we're only allowed to do it eithe as a
default or on platforms where there is no disdinction between the pipe
and the cpu transcoder.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-05 23:47:08 +02:00
Jesse Barnes
510d5f2f6b drm/i915: split encoder get_config calls from crtc get_clock calls
This should help on HSW, where we don't currently have a get_clock call.

Reported-by: Paulo Zanoni <przanoni@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-02 09:44:29 +02:00
Jesse Barnes
6f02488e3a drm/i915: fixup messages in pipe_config_compare
Print out the flag that failed and fix up a mismatched paren.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-01 19:39:56 +02:00
Jesse Barnes
319d9827eb drm/i915: flip on a no fb -> fb transition if crtc is active v3
If the crtc is active, we can simply flip a new fb onto it, provided the
other mode setting reqs are met.  Otherwise, we'll need to do a full
mode set to re-enable the crtc.

v2: check for crtc active and set mode_changed accordingly
v3: add module parameter, i915.fastboot, to control no fb -> fb flip behavior

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-01 19:38:18 +02:00
Jesse Barnes
4d6a3e63bc drm/i915: turn off panel fitting at flip time if needed v2
Need better pfit tracking to do this right.

v2: use fastboot param around this hack

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-01 19:38:17 +02:00
Jesse Barnes
babea61dfb drm/i915: copy fetched mode state into crtc at setup_hw time v5
We already fetch and track other state into the main CRTC and encoder
structs, and for fastboot we need to do the same with the mode and clock
data we read out.

v2: fix debug print
v3: use fastboot param around state copy
v4: set clock and flags for crtc here instead of in setup_hw_state
v5: rename function to intel_crtc_mode_from_pipe_config for consistency (Chris)

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-01 19:38:17 +02:00
Jesse Barnes
f1f644dc66 drm/i915: get mode clock when reading the pipe config v9
We need this for comparing modes between configuration changes.

The tricky part is to allow us to reuse the new get_clock stuff to
recover the lvds clock on gen2/3 when neither the vbt has an lvds mode
nor the panel a (useful) EDID.

v2: try harder to calulate non-simple pixel clocks (Daniel)
    call get_clock after getting the encoder config, needed for pixel multiply
    (Jesse)
v3: drop get_clock now that the pixel_multiply has been moved into
    get_pipe_config
v4: re-add get_clock; we need to get the pixel multiplier in the
    encoder, so need to calculate the clock value after the encoder's
    get_config is called
v5: drop hsw clock_get, still needs to be written
v6: add fuzzy clock check (Daniel)
v7: wrap fuzzy clock check under !IS_HASWELL
    use port_clock field rather than a new CPU eDP clock field in crtc_config
v8: remove stale pixel_multiplier sets (Daniel)
    multiply by pixel_multiplier in 9xx clock get too (Daniel)
v9: make sure we set pixel_multiplier before calling clock_get from mode_get
    for LVDS (Daniel)

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: Add some explanation to the commit message about why we have
to jump through a few hoops. Also remove the rebase-fail hunk from
intel_sdvo.c]
[danvet: Squash in the fixup from Jesse to also call ->get_clock in
the modeset state checker.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-01 19:37:53 +02:00
Daniel Vetter
c93f54cf7d drm/i915: pixel multiplier readout support for pch ports
Now that we painstakingly track the shared pch dplls we can finally
implement pixel mutliplier readout support for pch ports, too.

v2: Undo the temporary hack to disable the sdvo pixel multiplier
cross-checking.

Cc: Imre Deak <imre.deak@intel.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-01 11:28:01 +02:00
Ben Widawsky
5c3fe8b03e drm/i915: Move fbc members out of line
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
[danvet: Resolve conflict with Damien's FBC_CHIP_DEFAULT no fbc
reason.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-01 11:28:00 +02:00
Ville Syrjälä
165e901caa drm/i915: Mask out hardware status bits from VLV DPLL register
The DPLL lock bit, and the DPIO phy status bits are read-only and
controlled by the hardware, so they will never be set by the driver.
Mask them out when reading the hw state, so that the state
comparison won't fail.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuosugeek.org>
[danvet: Jesse asked for a code comment and I wholeheartly agree, so
added one.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-01 11:27:55 +02:00
Daniel Vetter
f6736a1a7b drm/i915: s/pre_pll/pre/ on the lvds port enable function
i9xx doesn't use pre_enable at all, so we can fold this in now.

Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-07-01 11:27:54 +02:00