GitHub/exynos8895/android_kernel_samsung_universal8895.git
10 years agodrm/dp: Staticize a couple of DP utility functions
Thierry Reding [Mon, 21 Jul 2014 11:23:57 +0000 (13:23 +0200)]
drm/dp: Staticize a couple of DP utility functions

sparse complains about these functions missing a prototype, but looking
closer they aren't (and likely not supposed to be) used outside of this
source file, so they can be made static.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/ttm: Fix a few sparse warnings
Thierry Reding [Mon, 21 Jul 2014 11:15:51 +0000 (13:15 +0200)]
drm/ttm: Fix a few sparse warnings

The final parameter to ttm_bo_reserve() is a pointer, therefore callers
should use NULL instead of 0.

Fixes a bunch of sparse warnings of this type:

warning: Using plain integer as NULL pointer

Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm: Add missing __user annotation
Thierry Reding [Mon, 21 Jul 2014 11:24:37 +0000 (13:24 +0200)]
drm: Add missing __user annotation

The drm_copy_field() function copies strings into userspace buffers, so
the first parameter needs to have a __user annotation to avoid warnings
from the sparse checker.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm: gem_cma: Use ERR_CAST helper
Sachin Kamat [Thu, 3 Jul 2014 12:03:33 +0000 (17:33 +0530)]
drm: gem_cma: Use ERR_CAST helper

Makes the code a bit more readable.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/i915: fix psr match conditions screw ups.
Dave Airlie [Mon, 21 Jul 2014 03:54:41 +0000 (13:54 +1000)]
drm/i915: fix psr match conditions screw ups.

Not enough brown paper bags, you'll have to share one.
(oops below).

The initial match condition code was racy (locking is coming I hear).

then along came:
cd234b0bfd5ab012e42274b24aae420fa1823d58
drm/i915: Do not dereference NULL crtc or fb until after checking

Chris made an attempt to fix it, Ben "reviewed" it.
Daniel merged it.

Then
drm/i915: Make use of intel_fb_obj() (v2)
2ff8fde1ea0992dfd735dce94f8cae2aacff8e5c

made it worse by removing the obj check later.

All in all, my laptop can't barely turn off the display
without hitting this.

Posted to #intel-gfx out of niceness, but I've merged
this already into drm-next.

Here's an oops.
[   11.528185] BUG: unable to handle kernel NULL pointer dereference at 00000000000000d0
[   11.528233] IP: [<ffffffffa0161fde>] intel_edp_psr_match_conditions+0x1e/0x2e0 [i915]
[   11.528294] PGD 35bc0067 PUD c997c067 PMD 0
[   11.528321] Oops: 0000 [#1] SMP
[   11.528916] CPU: 3 PID: 244 Comm: kworker/3:2 Not tainted 3.16.0-rc4+ #17
[   11.528949] Hardware name: LENOVO 20ARS25701/20ARS25701, BIOS GJET72WW (2.22 ) 02/21/2014
[   11.529004] Workqueue: events intel_edp_psr_work [i915]
[   11.529031] task: ffff8803079fdaa0 ti: ffff8803079c4000 task.ti: ffff8803079c4000
[   11.529067] RIP: 0010:[<ffffffffa0161fde>]  [<ffffffffa0161fde>] intel_edp_psr_match_conditions+0x1e/0x2e0 [i915]
[   11.529129] RSP: 0018:ffff8803079c7d40  EFLAGS: 00010246
[   11.529155] RAX: 0000000000000000 RBX: ffff88030c11c000 RCX: c000000000000000
[   11.529189] RDX: 0000000000000001 RSI: 1df0000000000000 RDI: ffff88030c1190d8
[   11.529222] RBP: ffff8803079c7d60 R08: ffffffff82691140 R09: 0000000000000000
[   11.529256] R10: ffff8803079fdaa0 R11: 3e00000000000000 R12: ffff88030c11c728
[   11.529290] R13: ffff88030c1190d8 R14: ffff88031e2d8e00 R15: 00000000000000c0
[   11.529324] FS:  0000000000000000(0000) GS:ffff88031e2c0000(0000) knlGS:0000000000000000
[   11.529361] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.529389] CR2: 00000000000000d0 CR3: 00000000c8d9d000 CR4: 00000000001407e0
[   11.529423] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   11.529457] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   11.529489] Stack:
[   11.529500]  ffff88030c119000 ffff88030c11c728 ffff88030c1190d8 ffff88031e2d8e00
[   11.529541]  ffff8803079c7d88 ffffffffa01679b2 ffff880035b29a80 ffff880307909f00
[   11.529583]  ffff88031e2d4740 ffff8803079c7df8 ffffffff810a78ab ffffffff810a7849
[   11.529624] Call Trace:
[   11.529654]  [<ffffffffa01679b2>] intel_edp_psr_work+0x52/0x90 [i915]
[   11.529689]  [<ffffffff810a78ab>] process_one_work+0x1db/0x540
[   11.529719]  [<ffffffff810a7849>] ? process_one_work+0x179/0x540
[   11.529750]  [<ffffffff810a81ed>] worker_thread+0x11d/0x520
[   11.529779]  [<ffffffff810a80d0>] ? create_and_start_worker+0x60/0x60
[   11.529810]  [<ffffffff810aeb04>] kthread+0xe4/0x100
[   11.529836]  [<ffffffff810aea20>] ? kthread_create_on_node+0x200/0x200
[   11.529870]  [<ffffffff81705ebc>] ret_from_fork+0x7c/0xb0
[   11.529896]  [<ffffffff810aea20>] ? kthread_create_on_node+0x200/0x200
[   11.529926] Code: ba 31 13 f0 c9 85 f6 75 84 eb d0 66 90 0f 1f 44 00 00 55 48 89 e5 41 56 41 55 41 54 53 48 8b 87 68 ff ff ff 48 8b 9f 28 ff ff ff <48> 8b 80 d0 00 00 00 4c 8b 63 28 48 8b 40 48 48 85 c0 0f 84 1a
[   11.530110] RIP  [<ffffffffa0161fde>] intel_edp_psr_match_conditions+0x1e/0x2e0 [i915]
[   11.530163]  RSP <ffff8803079c7d40>
[   11.530180] CR2: 00000000000000d0

Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agoMerge tag 'topic/core-stuff-2014-07-18' of git://anongit.freedesktop.org/drm-intel...
Dave Airlie [Sat, 19 Jul 2014 07:27:16 +0000 (17:27 +1000)]
Merge tag 'topic/core-stuff-2014-07-18' of git://anongit.freedesktop.org/drm-intel into drm-next

misc core patches.

* tag 'topic/core-stuff-2014-07-18' of git://anongit.freedesktop.org/drm-intel:
  drm: Check for connection_mutex in drm_select_eld
  drm/dp-mst-helper: Don't use uninitialized fields of the sideband message header
  drm/dp-mst-helper: Avoid reading uninitialized value
  drm/plane-helper: Use proper plane init function
  drivers/gpu/drm/drm_buffer.c: remove unnecessary null test before kfree
  drm: Fix function names in kerneldoc

10 years agoMerge tag 'drm-intel-next-2014-07-11' of git://anongit.freedesktop.org/drm-intel...
Dave Airlie [Sat, 19 Jul 2014 06:43:41 +0000 (16:43 +1000)]
Merge tag 'drm-intel-next-2014-07-11' of git://anongit.freedesktop.org/drm-intel into drm-next

- fbc improvements when stolen memory is tight (Ben)
- cdclk handling improvements for vlv/chv (Ville)
- proper fix for stuck primary planes on gmch platforms with cxsr (Imre&Ebgert
  Eich)
- gen8 hw semaphore support (Ben)
- more execlist prep work from Oscar Mateo
- locking fixes for primary planes (Matt Roper)
- code rework to support runtime pm for dpms on hsw/bdw (Paulo, Imre & me), but
  not yet enabled because some fixes from Paulo haven't made the cut
- more gpu boost tuning from Chris
- as usual piles of little things all over

* tag 'drm-intel-next-2014-07-11' of git://anongit.freedesktop.org/drm-intel: (93 commits)
  drm/i915: Make the RPS interrupt generation mask handle the vlv wa
  drm/i915: Move RPS evaluation interval counters to i915->rps
  drm/i915: Don't cast a pointer to void* unnecessarily
  drm/i915: don't read LVDS regs at compute_config time
  drm/i915: check the power domains in intel_lvds_get_hw_state()
  drm/i915: check the power domains in ironlake_get_pipe_config()
  drm/i915: don't skip shared DPLL assertion on LPT
  drm/i915: Only touch WRPLL hw state in enable/disable hooks
  drm/i915: Switch to common shared dpll framework for WRPLLs
  drm/i915: ->enable hook for WRPLLs
  drm/i915: ->disable hook for WRPLLs
  drm/i915: State readout support for WRPLLs
  drm/i915: add POWER_DOMAIN_PLLS
  drm/i915: Document that the pll->mode_set hook is optional
  drm/i915: Basic shared dpll support for WRPLLs
  drm/i915: Precompute static ddi_pll_sel values in encoders
  drm/i915: BDW also has special-purpose DP DDI clocks
  drm/i915: State readout and cross-checking for ddi_pll_sel
  drm/i915: Move ddi_pll_sel into the pipe config
  drm/i915: Add a debugfs file for the shared dpll state
  ...

10 years agodrm: Check for connection_mutex in drm_select_eld
Sean Paul [Thu, 17 Jul 2014 15:25:18 +0000 (11:25 -0400)]
drm: Check for connection_mutex in drm_select_eld

drm_select_eld should check for mode_config.connection_mutex as
well as mode_config.mutex: We need that since this function checks
conector->encoder links.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
[danvet: Pimp commit message slightly.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/dp-mst-helper: Don't use uninitialized fields of the sideband message header
Damien Lespiau [Mon, 14 Jul 2014 11:13:18 +0000 (12:13 +0100)]
drm/dp-mst-helper: Don't use uninitialized fields of the sideband message header

We could be using uninitialized fields of the header in
drm_dp_encode_sideband_msg_hdr(), for instance hdr->somt is set to 1 in
the first patcket but never set to 0 otherwise.

Always clear the header at the start then.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/dp-mst-helper: Avoid reading uninitialized value
Damien Lespiau [Mon, 14 Jul 2014 10:53:44 +0000 (11:53 +0100)]
drm/dp-mst-helper: Avoid reading uninitialized value

A static analysis tool tells me that we could try to read an
uninitialized 'ret' value. Plug that.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/plane-helper: Use proper plane init function
Matt Roper [Mon, 30 Jun 2014 22:37:51 +0000 (15:37 -0700)]
drm/plane-helper: Use proper plane init function

drm_plane_init() (the legacy plane initialization function) takes a bool
as its final parameter; originally this indicated whether a plane was
'private' to the driver (before the DRM core understood non-overlay
planes), now it indicates whether the plane is a primary plane (private
planes were used by some drivers to represent primary planes
internally).  The newer drm_universal_plane_init() take an 'enum
drm_plane_type' as its final parameter to allow the caller to specify
the specific plane type desired (primary, cursor, or overlay).

Due to a rebasing mistake, the primary plane helper is currently passing
DRM_PLANE_TYPE_PRIMARY (enum value = 1) for drm_plane_init()'s boolean
'is_primary' parameter.  This winds up giving the correct behavior since
DRM_PLANE_TYPE_PRIMARY evaluates as true, but is confusing to anyone
reading the code since we're passing an enum value (one of three
possible values) for a boolean parameter.

Replace the primary plane helper's call to drm_plane_init() with
drm_universal_plane_init() so that the parameter and value types match
up as expected.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrivers/gpu/drm/drm_buffer.c: remove unnecessary null test before kfree
Fabian Frederick [Sat, 28 Jun 2014 13:20:43 +0000 (15:20 +0200)]
drivers/gpu/drm/drm_buffer.c: remove unnecessary null test before kfree

This patch removes special case of last element and loops from idx to 0.

Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm: Fix function names in kerneldoc
Thierry Reding [Thu, 26 Jun 2014 19:37:20 +0000 (21:37 +0200)]
drm: Fix function names in kerneldoc

The drm_property_create_enum(), drm_property_create_bitmask() and
drm_property_create_range() contain the wrong name in the kerneldoc
comment. This is probably simply a copy/paste mistake.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/radeon: use helpers
Rob Clark [Fri, 18 Jul 2014 03:30:05 +0000 (23:30 -0400)]
drm/radeon: use helpers

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/i915: use helpers
Rob Clark [Fri, 18 Jul 2014 03:30:04 +0000 (23:30 -0400)]
drm/i915: use helpers

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/nouveau: use helpers
Rob Clark [Fri, 18 Jul 2014 03:30:03 +0000 (23:30 -0400)]
drm/nouveau: use helpers

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/vmwgfx: use helpers
Rob Clark [Fri, 18 Jul 2014 03:30:02 +0000 (23:30 -0400)]
drm/vmwgfx: use helpers

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/udl: use helpers
Rob Clark [Fri, 18 Jul 2014 03:30:01 +0000 (23:30 -0400)]
drm/udl: use helpers

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/mgag200: use helpers
Rob Clark [Fri, 18 Jul 2014 03:30:00 +0000 (23:30 -0400)]
drm/mgag200: use helpers

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/exynos: use helpers
Rob Clark [Fri, 18 Jul 2014 03:29:59 +0000 (23:29 -0400)]
drm/exynos: use helpers

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/cirrus: use helpers
Rob Clark [Fri, 18 Jul 2014 03:29:58 +0000 (23:29 -0400)]
drm/cirrus: use helpers

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/bochs: use helpers
Rob Clark [Fri, 18 Jul 2014 03:29:57 +0000 (23:29 -0400)]
drm/bochs: use helpers

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/ast: use helpers
Rob Clark [Fri, 18 Jul 2014 03:29:56 +0000 (23:29 -0400)]
drm/ast: use helpers

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/i915: Make the RPS interrupt generation mask handle the vlv wa
Chris Wilson [Thu, 10 Jul 2014 19:31:19 +0000 (20:31 +0100)]
drm/i915: Make the RPS interrupt generation mask handle the vlv wa

We can eliminate a lot of special case code by making the computation of
the interrupt mask be correct for all callers.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Move RPS evaluation interval counters to i915->rps
Chris Wilson [Thu, 10 Jul 2014 19:31:18 +0000 (20:31 +0100)]
drm/i915: Move RPS evaluation interval counters to i915->rps

Place the RPS counters inside the RPS struct.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Don't cast a pointer to void* unnecessarily
Damien Lespiau [Thu, 10 Jul 2014 13:52:43 +0000 (14:52 +0100)]
drm/i915: Don't cast a pointer to void* unnecessarily

C is super happy to asign anything pointer to void *. Don't pretend
otherwise.

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>
10 years agodrm/i915: don't read LVDS regs at compute_config time
Paulo Zanoni [Fri, 4 Jul 2014 16:38:36 +0000 (13:38 -0300)]
drm/i915: don't read LVDS regs at compute_config time

We may reach this point while the machine is still runtime suspended,
so we'll hit a WARN. The other encoders also don't touch registers at
this point, so instead of waking the machine up, write some code to
keep the register always at the same state, including after we runtime
suspend/resume.

Testcase: igt/pm_rpm
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80463
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: check the power domains in intel_lvds_get_hw_state()
Paulo Zanoni [Fri, 4 Jul 2014 16:38:35 +0000 (13:38 -0300)]
drm/i915: check the power domains in intel_lvds_get_hw_state()

Just like we do for the other encoders. This should fix some WARNs
when running pm_rpm on SNB.

Testcase: igt/pm_rpm
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80463
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: check the power domains in ironlake_get_pipe_config()
Paulo Zanoni [Fri, 4 Jul 2014 16:38:34 +0000 (13:38 -0300)]
drm/i915: check the power domains in ironlake_get_pipe_config()

Just like we already do in haswell_get_pipe_config(). This should
prevent some WARNs when we run pm_rpm on SNB.

Testcase: igt/pm_rpm
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80463
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: don't skip shared DPLL assertion on LPT
Paulo Zanoni [Fri, 4 Jul 2014 14:30:28 +0000 (11:30 -0300)]
drm/i915: don't skip shared DPLL assertion on LPT

Since we now have support for shared DPLLS.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Only touch WRPLL hw state in enable/disable hooks
Daniel Vetter [Wed, 25 Jun 2014 19:02:03 +0000 (22:02 +0300)]
drm/i915: Only touch WRPLL hw state in enable/disable hooks

To be able to do this we need to separately keep track of how many
crtcs need a given WRPLL and how many actually actively use it. The
common shared dpll framework already has all this, including massive
state readout and cross checking. Which allows us to do this switch in
a fairly small patch.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Switch to common shared dpll framework for WRPLLs
Daniel Vetter [Wed, 25 Jun 2014 19:02:02 +0000 (22:02 +0300)]
drm/i915: Switch to common shared dpll framework for WRPLLs

Mostly this patch is one big excersize in deleting code and asserts
which are no longer needed. Note that we still abuse the shared dpll
framework a bit since we call the enable/disable functions from the
crtc mode_set and off hooks. But changing the actual hardware sequence
will be done in the next step.

Note that besides the massive amount of changes in this patch the
places and order in which the low-level WRPLL code is called is
absolutely unchanged.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[imre: rebased on patchset version w/o pch/crt/fdi refactoring]
Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: ->enable hook for WRPLLs
Daniel Vetter [Wed, 25 Jun 2014 19:02:01 +0000 (22:02 +0300)]
drm/i915: ->enable hook for WRPLLs

This time around another cute hack to pre-fill the pll->hw_state with
the right values. And also remove a bunch of checks which will be
replaced by lots more checks in the common framework.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: ->disable hook for WRPLLs
Daniel Vetter [Wed, 25 Jun 2014 19:02:00 +0000 (22:02 +0300)]
drm/i915: ->disable hook for WRPLLs

Currently still with a redudant WARN_ON in there, the common shared
dpll code will take care of this in the future.

Also we need to flip the switch for the transitional hack now to make
sure that we disable the right pll.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: State readout support for WRPLLs
Daniel Vetter [Fri, 4 Jul 2014 14:27:39 +0000 (11:27 -0300)]
drm/i915: State readout support for WRPLLs

Still tacked onto the side, but slowly getting there.

v2: Don't forget the debugfs file.

v3 (from Paulo): Don't forget to check the power domains.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: add POWER_DOMAIN_PLLS
Paulo Zanoni [Fri, 4 Jul 2014 14:27:38 +0000 (11:27 -0300)]
drm/i915: add POWER_DOMAIN_PLLS

And get/put it when needed. The special thing about this commit is
that it will now return false in ibx_pch_dpll_get_hw_state() in case
the power domain is not enabled. This will fix some WARNs we have when
we run pm_rpm on SNB.

Testcase: igt/pm_rpm
Bugzilla:https://bugs.freedesktop.org/show_bug.cgi?id=80463
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Document that the pll->mode_set hook is optional
Daniel Vetter [Wed, 25 Jun 2014 19:01:58 +0000 (22:01 +0300)]
drm/i915: Document that the pll->mode_set hook is optional

The WRPLLs won't use them.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Basic shared dpll support for WRPLLs
Daniel Vetter [Wed, 25 Jun 2014 19:01:57 +0000 (22:01 +0300)]
drm/i915: Basic shared dpll support for WRPLLs

Just filing in names and ids, but not yet officially registering them
so that the hw state cross checker doesn't completely freak out about
them. Still since we do already read out and cross check
config->shared_dpll the basics are now there to flesh out the wrpll
shared dpll implementation.

The idea is now to roll out all the callbacks step-by-step and then at
the end switch to the shared dpll framework. This way hw and sw
changes are clearly separated.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[imre: added const to hsw_ddi_pll_names (Damien)]
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Precompute static ddi_pll_sel values in encoders
Daniel Vetter [Fri, 4 Jul 2014 14:26:04 +0000 (11:26 -0300)]
drm/i915: Precompute static ddi_pll_sel values in encoders

This way only the dynamic WRPLL selection for hdmi ddi mode is
done in intel_ddi_pll_select.

v2: Don't clobber the precomputed values when selecting clocks fro
hdmi encoders.
v3 (from Paulo): Rebase on top of the s/IS_HASWELL/HAS_DDI/ patch.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Paulo Zanoni <przanoni@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: BDW also has special-purpose DP DDI clocks
Paulo Zanoni [Fri, 4 Jul 2014 14:26:03 +0000 (11:26 -0300)]
drm/i915: BDW also has special-purpose DP DDI clocks

Don't let it fall in the HAS_PCH_SPLIT() case.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: State readout and cross-checking for ddi_pll_sel
Daniel Vetter [Wed, 25 Jun 2014 19:01:55 +0000 (22:01 +0300)]
drm/i915: State readout and cross-checking for ddi_pll_sel

To make things a bit more manageable extract a new function for
reading out common ddi port state. This means a bit of duplication
between encoders and the core since both look at the same registers,
but doesn't seem worth to make a fuzz about.

We can also remove the state readout code in intel_ddi_setup_hw_pll_state.
That code is only called from the hardware take over and not the cross
check code, and only after the crtc state is reconstructed. So we can
rely on an accurate value of crtc->config.ddi_pll_sel already.

Compared to the old code also trust the hw state more and don't
special-case port A - we want to cross-check the actual-state, not
bake in our own assumptions about how this is supposed to all be
linked up.

v2: Make use of the read-out ddi_pll_sel in intel_ddi_clock_get.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[imre: rebased on patchset version w/o pch/crt/fdi refactoring]
Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Move ddi_pll_sel into the pipe config
Daniel Vetter [Wed, 25 Jun 2014 19:01:54 +0000 (22:01 +0300)]
drm/i915: Move ddi_pll_sel into the pipe config

Just boring sed job for preparation.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[imre: rebased on patchset version w/o pch/crt/fdi refactoring]
Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Add a debugfs file for the shared dpll state
Daniel Vetter [Wed, 25 Jun 2014 19:01:53 +0000 (22:01 +0300)]
drm/i915: Add a debugfs file for the shared dpll state

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Move SPLL disabling into hsw_crt_post_disable
Daniel Vetter [Wed, 25 Jun 2014 19:01:52 +0000 (22:01 +0300)]
drm/i915: Move SPLL disabling into hsw_crt_post_disable

Similar to how the ->crtc_mode_set hook should touch the hardware to
enable anything the ->crtc_off hook should disable anything in the
hardware. Otherwise runtime pm for dpms will not work.

Currently the only things left int the haswell_crtc_off hook is
disabling the ddi plls. We can't move the WRPLL enabling out yet
because the current ddi pll sharing code used by the haswell code
doesn't separately track active users and overall users. This must be
fixed by porting it to the generic shared display pll framework, which
is powerful enough.

But the SPLL source is only used by the crt encoder and so can be
moved already. We only need to make sure that the ddi port E is
already off, which hsw_fdi_disable does by calling
intel_ddi_post_disable.

With this the code reorg to shuffle hsw fdi/lpt specific code into a
new hsw-specific crt encoder type is now finally complete.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[imre: rebased on patchset version w/o pch/crt/fdi refactoring]
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Move the SPLL enabling into hsw_crt_pre_enable
Daniel Vetter [Wed, 25 Jun 2014 19:01:51 +0000 (22:01 +0300)]
drm/i915: Move the SPLL enabling into hsw_crt_pre_enable

The call to intel_ddi_pll_enable in haswell_crtc_mode_set is the only
function that still touches the hardware state from the crtc mode_set
callback on hsw. Since the SPLL isn't ever shared we can easily take
it out into the hsw crt encoder functions.

Temporarily we'll loose a bit of WARN_ON coverage with this, but once
the WRPLLs are switched over that will be restored. For the SPLL
selection add a WARN in the hsw fdi link training code.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[imre: rebased on patchset version w/o pch/crt/fdi refactoring]
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: ddi: move pch cleanup before encoder->post_disable
Imre Deak [Wed, 25 Jun 2014 19:01:50 +0000 (22:01 +0300)]
drm/i915: ddi: move pch cleanup before encoder->post_disable

This is needed by an upcoming patch that moves the PCH/CRT PLL disabling
into the post_disable hook, after which we want to keep the modeset
sequence at its current state. At this point this won't have an effect
since the PCH/CRT post_disable hook is atm a NOP.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: ddi: move pch setup after encoder->pre_enable
Imre Deak [Wed, 25 Jun 2014 19:01:49 +0000 (22:01 +0300)]
drm/i915: ddi: move pch setup after encoder->pre_enable

This is needed by an upcoming patch that moves the PCH/CRT PLL enabling
into the pre_enable hook, after which we want to keep the modeset
sequence at its current state. At this point this won't have an effect
since the PCH/CRT pre_enable hook is atm a NOP.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Clean up WRPLL/SPLL #defines
Daniel Vetter [Wed, 25 Jun 2014 19:01:48 +0000 (22:01 +0300)]
drm/i915: Clean up WRPLL/SPLL #defines

Luckily the bit definitions match, but it's still confusing
to use one when handling the other. So sprinkle some OCD over
the #defines to make them match and use the right version in
each place.

Maybe we should unify these definitions completely, but that
can always be done sometime in the future.

Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Remove spll_refcount for hsw
Daniel Vetter [Wed, 25 Jun 2014 19:01:47 +0000 (22:01 +0300)]
drm/i915: Remove spll_refcount for hsw

SPLL would be a reference clock we could potentially share,
especially if we want to use the SSC mode. But currently we
don't, so let's rip out this complexity for a simpler conversion
to the new display pll framework.

Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Check hw state in assert_can_disable_lcpll
Daniel Vetter [Wed, 25 Jun 2014 19:01:46 +0000 (22:01 +0300)]
drm/i915: Check hw state in assert_can_disable_lcpll

All the other checks also check hw state, so checking our software
refcounts for the plls looks a bit odd. Also this will simplify the
conversion over to the shared dpll framework, which itself has massive
amounts of checks to make sure that we never leave a display pll
enabled when we shouldn't.

So after that conversion we should stil have a good enough coverage of
asserts for entering pc8/runtime pm on hsw/bdw.

Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Add a couple WARN()'s to catch missing locks
Matt Roper [Wed, 9 Jul 2014 23:22:11 +0000 (16:22 -0700)]
drm/i915: Add a couple WARN()'s to catch missing locks

Add !mutex_is_locked() checks to intel_pin_and_fence_fb_obj() and
intel_unpin_fb_obj() to help catch failures to grab struct_mutex when
operating on fb objects.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Add missing locking to primary plane handlers
Matt Roper [Wed, 9 Jul 2014 23:22:10 +0000 (16:22 -0700)]
drm/i915: Add missing locking to primary plane handlers

intel_primary_plane_{setplane,disable} were lacking struct_mutex locking
around their GEM operations.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reported-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: get/put runtime PM at i915_semaphore_status
Paulo Zanoni [Wed, 9 Jul 2014 17:31:57 +0000 (14:31 -0300)]
drm/i915: get/put runtime PM at i915_semaphore_status

Otherwise we will print some WARNs when we read registers and the
machine is suspended.

Testcase: igt/pm_rpm/debugfs-read
Cc: Ben Widawsky <ben@bwidawsk.net>
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>
10 years agodrm/i915: fix D_COMP usage on BDW
Paulo Zanoni [Fri, 4 Jul 2014 14:59:58 +0000 (11:59 -0300)]
drm/i915: fix D_COMP usage on BDW

On HSW, the D_COMP register can be accessed through the mailbox (read
and write) or through MMIO on a MCHBAR offset (read only). On BDW, the
access should be done through MMIO on another address. So to account
for all these cases, create hsw_read_dcomp() with the correct
implementation for reading, and also fix hsw_write_dcomp() to do the
correct thing on BDW.

With this patch, we can now get back from the PC8+ state on BDW. We
were previously getting a black screen and lots of dmesg errors.
Please notice that the bug only happens when you actually reach the
PC8+ states, not when you only allow it.

Testcase: igt/pm_rpm/rte
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: fix hsw_write_dcomp() error message
Paulo Zanoni [Fri, 4 Jul 2014 14:59:57 +0000 (11:59 -0300)]
drm/i915: fix hsw_write_dcomp() error message

That function can be used to write anything on D_COMP, not just
disable it, so print a more appropriate message.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/tilcdc: Fix build breakage
Sachin Kamat [Wed, 9 Jul 2014 11:42:57 +0000 (17:12 +0530)]
drm/tilcdc: Fix build breakage

Commit 34ea3d386347 ("drm: add register and unregister functions
for connectors") probably missed out converting the
drm_sysfs_connector_remove instances in the following files.
Without this patch we get the following compilation error:
ERROR: "drm_sysfs_connector_remove" [drivers/gpu/drm/tilcdc/tilcdc.ko] undefined!

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
CC: Thomas Wood <thomas.wood@intel.com>
CC: David Herrmann <dh.herrmann@gmail.com>
CC: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/i915: remove i915_rstdby_delays debugfs entry
Mika Kuoppala [Wed, 9 Jul 2014 12:10:46 +0000 (15:10 +0300)]
drm/i915: remove i915_rstdby_delays debugfs entry

CHV hard hangs on reading on 0x11100

References: https://bugs.freedesktop.org/show_bug.cgi?id=80893
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: remove i915_gfxec debugfs entry
Mika Kuoppala [Wed, 9 Jul 2014 12:10:45 +0000 (15:10 +0300)]
drm/i915: remove i915_gfxec debugfs entry

CHV hard hangs on reading on 0x112f4.

References: https://bugs.freedesktop.org/show_bug.cgi?id=80893
Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: remove i915_inttoext_table debugfs entry
Mika Kuoppala [Wed, 9 Jul 2014 12:10:44 +0000 (15:10 +0300)]
drm/i915: remove i915_inttoext_table debugfs entry

CHV hard hangs on reading these registers. As these have not
been used since cantiga & ilk, remove the debugfs entry.

References: https://bugs.freedesktop.org/show_bug.cgi?id=80893
Suggested-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: remove i915_delayedfreq_table debugfs entry
Mika Kuoppala [Wed, 9 Jul 2014 12:10:43 +0000 (15:10 +0300)]
drm/i915: remove i915_delayedfreq_table debugfs entry

CHV hard hangs on reading these registers. As these have not
been used since cantiga & ilk, remove the debugfs entry.

References: https://bugs.freedesktop.org/show_bug.cgi?id=80893
Suggested-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Make use of intel_fb_obj() (v2)
Matt Roper [Tue, 8 Jul 2014 14:50:07 +0000 (07:50 -0700)]
drm/i915: Make use of intel_fb_obj() (v2)

This should hopefully simplify the display code slightly and also
solves at least one mistake in intel_pipe_set_base() where
to_intel_framebuffer(fb)->obj is referenced during local variable
initialization, before 'if (!fb)' gets checked.

Potential uses of this macro were identified via the following
Coccinelle patch:

        @@
        expression E;
        @@
        * to_intel_framebuffer(E)->obj

        @@
        expression E;
        identifier I;
        @@
          I = to_intel_framebuffer(E);
          ...
        * I->obj

v2: Rewrite some NULL tests in terms of the obj rather than the fb.
    Also add a WARN() if trying to pageflip with a disabled primary
    plane.  [Suggested by Chris Wilson]

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Introduce intel_fb_obj() macro
Matt Roper [Tue, 8 Jul 2014 01:21:47 +0000 (18:21 -0700)]
drm/i915: Introduce intel_fb_obj() macro

Add an intel_fb_obj() macro that returns the GEM object associated with
a DRM framebuffer.  This macro is safe to call on NULL framebuffers (a
NULL object pointer will be returned in this case).

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/mst: fix build with debugfs off.
Dave Airlie [Wed, 9 Jul 2014 01:15:09 +0000 (11:15 +1000)]
drm/mst: fix build with debugfs off.

seq_file.h was being pulled in via drm_mm.h in that case.

Reported-by: Matthew Thode (on irc)
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/tilcdc: oops a Module.symvers snuck in
Dave Airlie [Wed, 9 Jul 2014 01:05:08 +0000 (11:05 +1000)]
drm/tilcdc: oops a Module.symvers snuck in

remove it.

Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agoMerge tag 'drm-intel-next-2014-06-20' of git://anongit.freedesktop.org/drm-intel...
Dave Airlie [Wed, 9 Jul 2014 00:38:42 +0000 (10:38 +1000)]
Merge tag 'drm-intel-next-2014-06-20' of git://anongit.freedesktop.org/drm-intel into drm-next

- Accurate frontbuffer tracking and frontbuffer rendering invalidate, flush and
  flip events. This is prep work for proper PSR support and should also be
  useful for DRRS&fbc.
- Runtime suspend hardware on system suspend to support the new SOix sleep
  states, from Jesse.
- PSR updates for broadwell (Rodrigo)
- Universal plane support for cursors (Matt Roper), including core drm patches.
- Prefault gtt mappings (Chris)
- baytrail write-enable pte bit support (Akash Goel)
- mmio based flips (Sourab Gupta) instead of blitter ring flips
- interrupt handling race fixes (Oscar Mateo)

And old, not yet merged features from the previous round:
- rps/turbo support for chv (Deepak)
- some other straggling chv patches (Ville)
- proper universal plane conversion for the primary plane (Matt Roper)
- ppgtt on vlv from Jesse
- pile of cleanups, little fixes for insane corner cases and improved debug
  support all over

* tag 'drm-intel-next-2014-06-20' of git://anongit.freedesktop.org/drm-intel: (99 commits)
  drm/i915: Update DRIVER_DATE to 20140620
  drivers/i915: Fix unnoticed failure of init_ring_common()
  drm/i915: Track frontbuffer invalidation/flushing
  drm/i915: Use new frontbuffer bits to increase pll clock
  drm/i915: don't take runtime PM reference around freeze/thaw
  drm/i915: use runtime irq suspend/resume in freeze/thaw
  drm/i915: Properly track domain of the fbcon fb
  drm/i915: Print obj->frontbuffer_bits in debugfs output
  drm/i915: Introduce accurate frontbuffer tracking
  drm/i915: Drop schedule_back from psr_exit
  drm/i915: Ditch intel_edp_psr_update
  drm/i915: Drop unecessary complexity from psr_inactivate
  drm/i915: Remove ctx->last_ring
  drm/i915/chv: Ack interrupts before handling them (CHV)
  drm/i915/bdw: Ack interrupts before handling them (GEN8)
  drm/i915/vlv: Ack interrupts before handling them (VLV)
  drm/i915: Ack interrupts before handling them (GEN5 - GEN7)
  drm/i915: Don't BUG_ON in i915_gem_obj_offset
  drm/i915: Grab dev->struct_mutex in i915_gem_pageflip_info
  drm/i915: Add some L3 registers to the parser whitelist
  ...

Conflicts:
drivers/gpu/drm/i915/i915_drv.c

10 years agodrm/i915: HWS must be in the mappable region for g33
Chris Wilson [Thu, 3 Jul 2014 21:33:03 +0000 (17:33 -0400)]
drm/i915: HWS must be in the mappable region for g33

On g33, the documentation states

"HWS_PGA:
 Format = Bits 28:12 of graphics memory address (bits 31:29 MBZ)."

which translates to that the address of the HWS must be below 256MiB,
which is conveniently the mappable aperture.

This also appears to be true (but not documented as so) for gen4 and
gen5. To generalise we force it into the low mappable region for all
non-LLC platforms. If we locate the HWS at the top of the GTT the
machine will hard hang during boot (fails on pnv, gm45, ilk and byt,
but works on snb, ivb, hsw).

v2: Add comments to explain why use PIN_MAPPABLE even though we have
    no intention of mapping the object. (Ville)

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915/vlv: WA for Turbo and RC6 to work together.
Deepak S [Thu, 3 Jul 2014 21:33:01 +0000 (17:33 -0400)]
drm/i915/vlv: WA for Turbo and RC6 to work together.

With RC6 enabled, BYT has an HW issue in determining the right
Gfx busyness.
WA for Turbo + RC6: Use SW based Gfx busy-ness detection to decide
on increasing/decreasing the freq. This logic will monitor C0
counters of render/media power-wells over EI period and takes
necessary action based on these values

v2: Refactor duplicate code. (Ville)

v3: Reformat the comments. (Ville)

v4: Enable required counters and remove unwanted code (Ville)

v5: Added frequency change acceleration support and remove kernel-doc
style comments. (Ville)

v6: Updated comment section and Fix w/a comment. (Ville)

Signed-off-by: Deepak S <deepak.s@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Use mmio flips to change tiling mode on Baytrail
Chris Wilson [Tue, 8 Jul 2014 09:40:30 +0000 (10:40 +0100)]
drm/i915: Use mmio flips to change tiling mode on Baytrail

For whatever reason, MI_DISPLAY_FLIP fails to change tiling mode on
Baytrail, so just use CPU driven mmio flips instead.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76176
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Disable RCS flips on Ivybridge
Chris Wilson [Tue, 8 Jul 2014 09:40:29 +0000 (10:40 +0100)]
drm/i915: Disable RCS flips on Ivybridge

We currently see random GPU hangs when using RCS flips with multiple
pipes on Ivybridge. Now that we have mmio flips, we can fairly cheaply
fallback to using CPU driven flips instead.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77104
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Extract the actual workload submission mechanism from execbuffer
Oscar Mateo [Thu, 3 Jul 2014 15:28:05 +0000 (16:28 +0100)]
drm/i915: Extract the actual workload submission mechanism from execbuffer

So that we isolate the legacy ringbuffer submission mechanism, which becomes
a good candidate to be abstracted away. This is prep-work for Execlists (which
will its own workload submission mechanism).

No functional changes.

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Generalize intel_ring_get_tail to take a ringbuf
Oscar Mateo [Thu, 3 Jul 2014 15:28:04 +0000 (16:28 +0100)]
drm/i915: Generalize intel_ring_get_tail to take a ringbuf

Again, it's low-level enough to simply take a ringbuf and nothing
else.

Trivial change.

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Generalize ring_space to take a ringbuf
Oscar Mateo [Thu, 3 Jul 2014 15:28:03 +0000 (16:28 +0100)]
drm/i915: Generalize ring_space to take a ringbuf

It's simple enough that it doesn't need to know anything about the
engine.

Trivial change.

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Extract ringbuffer destroy & generalize alloc to take a ringbuf
Oscar Mateo [Thu, 3 Jul 2014 15:28:02 +0000 (16:28 +0100)]
drm/i915: Extract ringbuffer destroy & generalize alloc to take a ringbuf

More prep work: with Execlists, we are going to start creating a lot
of extra ringbuffers soon, so these functions are handy.

No functional changes.

v2: rename allocate/destroy_ring_buffer to alloc/destroy_ringbuffer_obj
because the name is more meaningful and to mirror a similar function in
the context world: i915_gem_alloc_context_obj(). Change suggested by Brad
Volkin.

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Add kerneldoc comments to the intel_context struct
Oscar Mateo [Thu, 3 Jul 2014 15:28:01 +0000 (16:28 +0100)]
drm/i915: Add kerneldoc comments to the intel_context struct

A bit of background on the context elements.

Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Appease checkpatch.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Emphasize that ctx->id is merely a user handle
Oscar Mateo [Thu, 3 Jul 2014 15:28:00 +0000 (16:28 +0100)]
drm/i915: Emphasize that ctx->id is merely a user handle

This is an Execlists preparatory patch, since they make context ID become an
overloaded term:

- In the software, it was used to distinguish which context userspace was
  trying to use.
- In the BSpec, the term is used to describe the 20-bits long field the
  hardware uses to it to discriminate the contexts that are submitted to
  the ELSP and inform the driver about their current status (via Context
  Switch Interrupts and Context Status Buffers).

Initially, I tried to make the different meanings converge, but it proved
impossible:

- The software ctx->id is per-filp, while the hardware one needs to be
  globally unique.
- Also, we multiplex several backing states objects per intel_context,
  and all of them need unique HW IDs.
- I tried adding a per-filp ID and then composing the HW context ID as:
  ctx->id + file_priv->id + ring->id, but the fact that the hardware only
  uses 20-bits means we have to artificially limit the number of filps or
  contexts the userspace can create.

The ctx->user_handle renaming bits are done with this Cocci patch (plus
manual frobbing of the struct declaration):

    @@
    struct intel_context c;
    @@
    - (c).id
    + c.user_handle

    @@
    struct intel_context *c;
    @@
    - (c)->id
    + c->user_handle

Also, while we are at it, s/DEFAULT_CONTEXT_ID/DEFAULT_CONTEXT_HANDLE and
change the type to unsigned 32 bits.

v2: s/handle/user_handle and change the type to uint32_t as suggested by
Chris Wilson.

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> (v1)
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Emphasize that ctx->obj & ctx->is_initialized refer to the legacy rcs ctx
Oscar Mateo [Thu, 3 Jul 2014 15:27:59 +0000 (16:27 +0100)]
drm/i915: Emphasize that ctx->obj & ctx->is_initialized refer to the legacy rcs ctx

We have already advanced that Logical Ring Contexts have their own kind
of backing objects, but everything will be better explained in the Execlists
series. For now, suffice it to say that the current backing object is only
ever used with the render ring, so we're making this fact more explicit
(which is a good reason on its own).

As for the is_initialized flag, we only use to signify that the render state
has been initialized (a.k.a. golden context, a.k.a. null context). It doesn't
mean anything for the other engines, so make that distinction obvious.

Done with the following Coccinelle patch (plus manual frobbing of the struct):

    @@
    struct intel_context c;
    @@
    - (c).obj
    + c.legacy_hw_ctx.rcs_state

    @@
    struct intel_context *c;
    @@
    - (c)->obj
    + c->legacy_hw_ctx.rcs_state

    @@
    struct intel_context c;
    @@
    - (c).is_initialized
    + c.legacy_hw_ctx.initialized

    @@
    struct intel_context *c;
    @@
    - (c)->is_initialized
    + c->legacy_hw_ctx.initialized

This Execlists prep-work patch has been suggested by Chris Wilson and Daniel
Vetter separately.

Initially, it was two separate patches:
drm/i915: Rename ctx->obj to ctx->rcs_state
drm/i915: Make it obvious that ctx->id is merely a user handle

Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: s/id/is_initialized/ to fix the subject and resolve a
conflict in i915_gem_context_reset. Also introduce a new lctx local
variable to avoid overtly long lines.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Extract context backing object allocation
Oscar Mateo [Thu, 3 Jul 2014 15:27:58 +0000 (16:27 +0100)]
drm/i915: Extract context backing object allocation

This is preparatory work for Execlists: we plan to use it later to
allocate our own context objects (since Logical Ring Contexts do
not have the same kind of backing objects).

No functional changes.

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: make system freeze support depend on CONFIG_ACPI_SLEEP
Imre Deak [Mon, 23 Jun 2014 12:46:02 +0000 (15:46 +0300)]
drm/i915: make system freeze support depend on CONFIG_ACPI_SLEEP

To achieve further power savings during system freeze (aka connected
standby, or s0ix) we have to send a PCI_D1 opregion notification. As
the information about the state we're entering (system freeze,
suspend to ram or suspend to disk) is only available through the ACPI
subsystem, make this support depend on the relevant kconfig option.
Things will still work if this option isn't set, albeit with less than
optimial power saving.

This also fixes a compile breakage when the option is not set introduced
in

commit e5747e3adcd67ae27105003ec99fb58cba180105
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date:   Thu Jun 12 08:35:47 2014 -0700

    drm/i915: send proper opregion notifications on suspend/resume

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Restrict GPU boost to the RCS engine
Chris Wilson [Thu, 12 Jun 2014 09:28:55 +0000 (10:28 +0100)]
drm/i915: Restrict GPU boost to the RCS engine

Make the assumption that media workloads are not as latency sensitive
for __wait_seqno, and that upclocking the GPU does not affect the BLT
engine. Under that assumption, we only wait to forcibly upclock the GPU
when we are stalling for results from the render pipeline.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Deepak S<deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm: Remove command line guard for universal planes
Matt Roper [Mon, 7 Jul 2014 18:19:57 +0000 (11:19 -0700)]
drm: Remove command line guard for universal planes

Universal planes are ready to leave 'experimental' state so drop the
kernel command line parameter that we've been hiding them behind.
Userspace clients that wish to receive universal planes will still need
to opt-in by setting the appropriate capability bit, so this should have
no impact on existing userspace.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/helper: add Displayport multi-stream helper (v0.6)
Dave Airlie [Thu, 5 Jun 2014 04:01:32 +0000 (14:01 +1000)]
drm/helper: add Displayport multi-stream helper (v0.6)

This is the initial import of the helper for displayport multistream.

It consists of a topology manager, init/destroy/set mst state

It supports DP 1.2 MST sideband msg protocol handler - via hpd irqs

connector detect and edid retrieval interface.

It supports i2c device over DP 1.2 sideband msg protocol (EDID reads only)

bandwidth manager API via vcpi allocation and payload updating,
along with a helper to check the ACT status.

Objects:
MST topology manager - one per toplevel MST capable GPU port - not sure if this should be higher level again
MST branch unit - one instance per plugged branching unit - one at top of hierarchy - others hanging from ports
MST port - one port per port reported by branching units, can have MST units hanging from them as well.

Changes since initial posting:
a) add a mutex responsbile for the queues, it locks the sideband and msg slots, and msgs to transmit state
b) add worker to handle connection state change events, for MST device chaining and hotplug
c) add a payload spinlock
d) add path sideband msg support
e) fixup enum path resources transmit
f) reduce max dpcd msg to 16, as per DP1.2 spec.
g) separate tx queue kicking from irq processing and move irq acking back to drivers.

Changes since v0.2:
a) reorganise code,
b) drop ACT forcing code
c) add connector naming interface using path property
d) add topology dumper helper
e) proper reference counting and lookup for ports and mstbs.
f) move tx kicking into a workq
g) add aux locking - this should be redone
h) split teardown into two parts
i) start working on documentation on interface.

Changes since v0.3:
a) vc payload locking and tracking fixes
b) add hotplug callback into driver - replaces crazy return 1 scheme
c) txmsg + mst branch device refcount fixes
d) don't bail on mst shutdown if device is gone
e) change irq handler to take all 4 bytes of SINK_COUNT + ESI vectors
f) make DP payload updates timeout longer - observed on docking station redock
g) add more info to debugfs dumper

Changes since v0.4:
a) suspend/resume support
b) more debugging in debugfs

Changes since v0.5:
a) use byte * to avoid unnecessary stack usage
b) fix num_sdp_streams interpretation.
c) init payload state for unplug events
d) remove lenovo dock sink count hack
e) drop aux lock - post rebase
f) call hotplug on port destroy

TODO:
misc features

Reviewed-by: Todd Previte <tprevite@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm: add a path blob property
Dave Airlie [Thu, 5 Jun 2014 04:01:31 +0000 (14:01 +1000)]
drm: add a path blob property

This property will be used by the MST code to provide userspace
with a path to parse so it can recognise connectors around hotplugs.

Reviewed-by: Todd Previte <tprevite@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/fb_helper: allow adding/removing connectors later
Dave Airlie [Thu, 5 Jun 2014 04:01:30 +0000 (14:01 +1000)]
drm/fb_helper: allow adding/removing connectors later

This is required to get fbcon probing to work on new connectors,
callers should acquire the mode config lock before calling these.

Reviewed-by: Todd Previte <tprevite@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/crtc: add interface to reinitialise the legacy mode group
Dave Airlie [Thu, 5 Jun 2014 04:01:29 +0000 (14:01 +1000)]
drm/crtc: add interface to reinitialise the legacy mode group

This can be called to update things after dynamic connectors/encoders
are created/deleted.

Reviewed-by: Todd Previte <tprevite@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/udl: Implement page_flip ioctl
Stéphane Marchesin [Wed, 2 Jul 2014 22:13:43 +0000 (15:13 -0700)]
drm/udl: Implement page_flip ioctl

This is a very crude page_flip implementation for UDL. There are ways
to make it better (make it asynchronous, make it do actual vsynced
flips...) but that's for another patch.

[airlied: fixup primary change]

Signed-off-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/udl: add vblank support
Stéphane Marchesin [Wed, 2 Jul 2014 22:13:42 +0000 (15:13 -0700)]
drm/udl: add vblank support

This is needed to be able to send page flip completion events.
Also while I'm at it, fix the error paths on init.

Signed-off-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/tegra: Implement race-free hotplug detection
Thierry Reding [Fri, 27 Jun 2014 15:19:25 +0000 (17:19 +0200)]
drm/tegra: Implement race-free hotplug detection

A race condition currently exists on Tegra, where it can happen that a
monitor attached via HDMI isn't detected during the initial FB helper
setup, but the hotplug event happens too early to be processed by the
poll helpers because they haven't been initialized yet. This happens
because on some boards the HDMI driver can control the regulator that
supplies the +5V pin on the HDMI connector. Therefore depending on the
timing between the initialization of the HDMI driver and the rest of
DRM, it's possible that the monitor returns the hotplug signal right
within the window where we would miss it.

Unfortunately, drm_kms_helper_poll_init() will wreak havoc when called
before at least some parts of the FB helpers have been set up.

This commit fixes this by splitting out the minimum of initialization
required to make drm_kms_helper_poll_init() work into a separate
function that can be called early. It is then safe to move all of the
poll helper initialization to an earlier point in time (before the
HDMI output driver has a chance to enable the +5V supply). That way if
the hotplug signal is returned before the initial FB helper setup, the
monitor will be forcefully detected at that point, and if the hotplug
signal is returned after that it will be properly handled by the poll
helpers.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm: Introduce drm_fb_helper_prepare()
Thierry Reding [Fri, 27 Jun 2014 15:19:24 +0000 (17:19 +0200)]
drm: Introduce drm_fb_helper_prepare()

To implement hotplug detection in a race-free manner, drivers must call
drm_kms_helper_poll_init() before hotplug events can be triggered. Such
events can be triggered right after any of the encoders or connectors
are initialized. At the same time, if the drm_fb_helper_hotplug_event()
helper is used by a driver, then the poll helper requires some parts of
the FB helper to be initialized to prevent a crash.

At the same time, drm_fb_helper_init() requires information that is not
necessarily available at such an early stage (number of CRTCs and
connectors), so it cannot be used yet.

Add a new helper, drm_fb_helper_prepare(), that initializes the bare
minimum needed to allow drm_kms_helper_poll_init() to execute and any
subsequent hotplug events to be processed properly.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm: Constify struct drm_fb_helper_funcs
Thierry Reding [Fri, 27 Jun 2014 15:19:23 +0000 (17:19 +0200)]
drm: Constify struct drm_fb_helper_funcs

There's no need for this to be modifiable. Make it const so that it can
be put into the .rodata section.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/fb-helper: Fix hpd vs. initial config races
Daniel Vetter [Fri, 27 Jun 2014 15:19:22 +0000 (17:19 +0200)]
drm/fb-helper: Fix hpd vs. initial config races

Some drivers need to be able to have a perfect race-free fbcon setup.
Current drivers only enable hotplug processing after the call to
drm_fb_helper_initial_config which leaves a tiny but important race.

This race is especially noticable on embedded platforms where the
driver itself enables the voltage for the hdmi output, since only then
will monitors (after a bit of delay, as usual) respond by asserting
the hpd pin.

Most of the infrastructure is already there with the split-out
drm_fb_helper_init. And drm_fb_helper_initial_config already has all
the required locking to handle concurrent hpd events since

commit 53f1904bced78d7c00f5d874c662ec3ac85d0f9f
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Thu Mar 20 14:26:35 2014 +0100

    drm/fb-helper: improve drm_fb_helper_initial_config locking

The only missing bit is making drm_fb_helper_hotplug_event save
against concurrent calls of drm_fb_helper_initial_config. The only
unprotected bit is the check for fb_helper->fb.

With that drivers can first initialize the fb helper, then enabel
hotplug processing and then set up the initial config all in a
completely race-free manner. Update kerneldoc and convert i915 as a
proof of concept.

Feature requested by Thierry since his tegra driver atm reliably boots
slowly enough to misses the hotplug event for an external hdmi screen,
but also reliably boots to quickly for the hpd pin to be asserted when
the fb helper calls into the hdmi ->detect function.

Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agottm: use NULL instead of 0 for ttm_bo_reserve()'s pointer arg.
Martin Kepplinger [Sun, 15 Jun 2014 00:10:39 +0000 (02:10 +0200)]
ttm: use NULL instead of 0 for ttm_bo_reserve()'s pointer arg.

Fix a sparse warning: ttm_bo_reserve()'s last argument is a
pointer to a struct, so use NULL as nullpointer.

Signed-off-by: Martin Kepplinger <martink@posteo.de>
Reviewed-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/tilcdc: replace late_initcall with module_init
Guido Martínez [Tue, 17 Jun 2014 14:17:11 +0000 (11:17 -0300)]
drm/tilcdc: replace late_initcall with module_init

Use module_init instead of late_initcall, as is the norm for modular
drivers.

module_init was used until 6e8de0bd6a51fdeebd5d975c4fcc426f730b339b
("drm/tilcdc: add encoder slave (v2)") changed it to a late_initcall,
but it does not explain why. Tests show it's working properly with
module_init.

Signed-off-by: Guido Martínez <guido@vanguardiasur.com.ar>
Tested-by: Darren Etheridge <detheridge@ti.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/tilcdc: remove submodule destroy calls
Guido Martínez [Tue, 17 Jun 2014 14:17:10 +0000 (11:17 -0300)]
drm/tilcdc: remove submodule destroy calls

The TI tilcdc driver is designed with a notion of submodules. Currently,
at unload time, these submodules are iterated and destroyed.

Now that the tilcdc remove order is fixed, this can be handled perfectly
by the kernel using the device infrastructure, since each submodule
is a kernel driver itself, and they are only destroy()'ed at unload
time. Therefore we move the destroy() functionality to each submodule's
remove().

Also, remove some checks in the unloading process since the new code
guarantees the resources are allocated and need a release.

Signed-off-by: Guido Martínez <guido@vanguardiasur.com.ar>
Tested-by: Darren Etheridge <detheridge@ti.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/tilcdc: fix double kfree
Guido Martínez [Tue, 17 Jun 2014 14:17:09 +0000 (11:17 -0300)]
drm/tilcdc: fix double kfree

display_timings_release calls kfree on the display_timings object passed
to it. Calling kfree after it is wrong. SLUB debug showed the following
warning:

    =============================================================================
    BUG kmalloc-64 (Tainted: G        W    ): Object already free
    -----------------------------------------------------------------------------

    Disabling lock debugging due to kernel taint
    INFO: Allocated in of_get_display_timings+0x2c/0x214 age=601 cpu=0
    pid=884
     __slab_alloc.constprop.79+0x2e0/0x33c
     kmem_cache_alloc+0xac/0xdc
     of_get_display_timings+0x2c/0x214
     panel_probe+0x7c/0x314 [tilcdc]
     platform_drv_probe+0x18/0x48
     [..snip..]
    INFO: Freed in panel_destroy+0x18/0x3c [tilcdc] age=0 cpu=0 pid=907
     __slab_free+0x34/0x330
     panel_destroy+0x18/0x3c [tilcdc]
     tilcdc_unload+0xd0/0x118 [tilcdc]
     drm_dev_unregister+0x24/0x98
     [..snip..]

Signed-off-by: Guido Martínez <guido@vanguardiasur.com.ar>
Tested-by: Darren Etheridge <detheridge@ti.com>
Cc: <stable@vger.kernel.org> #v3.9+
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/tilcdc: fix release order on exit
Guido Martínez [Tue, 17 Jun 2014 14:17:08 +0000 (11:17 -0300)]
drm/tilcdc: fix release order on exit

Unregister resources in the correct order on tilcdc_drm_fini, which is
the reverse order they were registered during tilcdc_drm_init.

This also means unregistering the driver before releasing its resources.

Signed-off-by: Guido Martínez <guido@vanguardiasur.com.ar>
Tested-by: Darren Etheridge <detheridge@ti.com>
Cc: <stable@vger.kernel.org> #v3.9+
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/tilcdc: panel: fix leak when unloading the module
Guido Martínez [Tue, 17 Jun 2014 14:17:07 +0000 (11:17 -0300)]
drm/tilcdc: panel: fix leak when unloading the module

The driver did not unregister the allocated framebuffer, which caused
memory leaks (and memory manager WARNs) when unloading. Also, the
framebuffer device under /dev still existed after unloading.

Add a call to drm_fbdev_cma_fini when unloading the module to prevent
both issues.

Signed-off-by: Guido Martínez <guido@vanguardiasur.com.ar>
Tested-by: Darren Etheridge <detheridge@ti.com>
Cc: <stable@vger.kernel.org> #v3.9+
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/tilcdc: tfp410: fix dangling sysfs connector node
Guido Martínez [Tue, 17 Jun 2014 14:17:06 +0000 (11:17 -0300)]
drm/tilcdc: tfp410: fix dangling sysfs connector node

Add a drm_sysfs_connector_remove call when we destroy the panel to make
sure the connector node in sysfs gets deleted.

This is required for proper unload and re-load of this driver, otherwise
we will get a warning about a duplicate filename in sysfs.

Signed-off-by: Guido Martínez <guido@vanguardiasur.com.ar>
Tested-by: Darren Etheridge <detheridge@ti.com>
Cc: <stable@vger.kernel.org> #v3.9+
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/tilcdc: slave: fix dangling sysfs connector node
Guido Martínez [Tue, 17 Jun 2014 14:17:05 +0000 (11:17 -0300)]
drm/tilcdc: slave: fix dangling sysfs connector node

Add a drm_sysfs_connector_remove call when we destroy the panel to make
sure the connector node in sysfs gets deleted.

This is required for proper unload and re-load of this driver as a
module. Without this, we would get a warning at re-load time like so:

   tda998x 0-0070: found TDA19988
   ------------[ cut here ]------------
   WARNING: CPU: 0 PID: 825 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x54/0x74()
   sysfs: cannot create duplicate filename '/class/drm/card0-HDMI-A-1'
   Modules linked in: [..]
   CPU: 0 PID: 825 Comm: modprobe Not tainted 3.15.0-rc4-00027-g9dcdef4 #82
   [<c0013bb8>] (unwind_backtrace) from [<c0011824>] (show_stack+0x10/0x14)
   [<c0011824>] (show_stack) from [<c0034e8c>] (warn_slowpath_common+0x68/0x88)
   [<c0034e8c>] (warn_slowpath_common) from [<c0034edc>] (warn_slowpath_fmt+0x30/0x40)
   [<c0034edc>] (warn_slowpath_fmt) from [<c01243f4>] (sysfs_warn_dup+0x54/0x74)
   [<c01243f4>] (sysfs_warn_dup) from [<c0124708>] (sysfs_do_create_link_sd.isra.2+0xb0/0xb8)
   [<c0124708>] (sysfs_do_create_link_sd.isra.2) from [<c02ae37c>] (device_add+0x338/0x520)
   [<c02ae37c>] (device_add) from [<c02ae6e8>] (device_create_groups_vargs+0xa0/0xc4)
   [<c02ae6e8>] (device_create_groups_vargs) from [<c02ae758>] (device_create+0x24/0x2c)
   [<c02ae758>] (device_create) from [<c029b4ec>] (drm_sysfs_connector_add+0x64/0x204)
   [<c029b4ec>] (drm_sysfs_connector_add) from [<bf0b1b40>] (slave_modeset_init+0x120/0x1bc [tilcdc])
   [<bf0b1b40>] (slave_modeset_init [tilcdc]) from [<bf0b2be8>] (tilcdc_load+0x214/0x4c0 [tilcdc])
   [<bf0b2be8>] (tilcdc_load [tilcdc]) from [<c029955c>] (drm_dev_register+0xa4/0x104)
      [..snip..]
   ---[ end trace 4df8d614936ebdee ]---
   [drm:drm_sysfs_connector_add] *ERROR* failed to register connector device: -17

Signed-off-by: Guido Martínez <guido@vanguardiasur.com.ar>
Tested-by: Darren Etheridge <detheridge@ti.com>
Cc: <stable@vger.kernel.org> #v3.9+
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/tilcdc: panel: fix dangling sysfs connector node
Guido Martínez [Tue, 17 Jun 2014 14:17:04 +0000 (11:17 -0300)]
drm/tilcdc: panel: fix dangling sysfs connector node

Add a drm_sysfs_connector_remove call when we destroy the panel to make
sure the connector node in sysfs gets deleted.

This is required for proper unload and re-load of this driver as a
module. Without this, we would get a warning at re-load time like so:

   ------------[ cut here ]------------
   WARNING: CPU: 0 PID: 824 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x54/0x74()
   sysfs: cannot create duplicate filename '/class/drm/card0-LVDS-1'
   Modules linked in: [...]
   CPU: 0 PID: 824 Comm: modprobe Not tainted 3.15.0-rc4-00027-g6484f96-dirty #81
   [<c0013bb8>] (unwind_backtrace) from [<c0011824>] (show_stack+0x10/0x14)
   [<c0011824>] (show_stack) from [<c0034e8c>] (warn_slowpath_common+0x68/0x88)
   [<c0034e8c>] (warn_slowpath_common) from [<c0034edc>] (warn_slowpath_fmt+0x30/0x40)
   [<c0034edc>] (warn_slowpath_fmt) from [<c01243f4>] (sysfs_warn_dup+0x54/0x74)
   [<c01243f4>] (sysfs_warn_dup) from [<c0124708>] (sysfs_do_create_link_sd.isra.2+0xb0/0xb8)
   [<c0124708>] (sysfs_do_create_link_sd.isra.2) from [<c02ae37c>] (device_add+0x338/0x520)
   [<c02ae37c>] (device_add) from [<c02ae6e8>] (device_create_groups_vargs+0xa0/0xc4)
   [<c02ae6e8>] (device_create_groups_vargs) from [<c02ae758>] (device_create+0x24/0x2c)
   [<c02ae758>] (device_create) from [<c029b4ec>] (drm_sysfs_connector_add+0x64/0x204)
   [<c029b4ec>] (drm_sysfs_connector_add) from [<bf0b1fec>] (panel_modeset_init+0xb8/0x134 [tilcdc])
   [<bf0b1fec>] (panel_modeset_init [tilcdc]) from [<bf0b2bf0>] (tilcdc_load+0x214/0x4c0 [tilcdc])
   [<bf0b2bf0>] (tilcdc_load [tilcdc]) from [<c029955c>] (drm_dev_register+0xa4/0x104)
      [ .. snip .. ]
   ---[ end trace b2d09cd9578b0497 ]---
   [drm:drm_sysfs_connector_add] *ERROR* failed to register connector device: -17

Signed-off-by: Guido Martínez <guido@vanguardiasur.com.ar>
Tested-by: Darren Etheridge <detheridge@ti.com>
Cc: <stable@vger.kernel.org> #v3.9+
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agodrm/crtc-helper: use drm_framebuffer flags
Fabien DESSENNE [Tue, 1 Jul 2014 12:40:42 +0000 (14:40 +0200)]
drm/crtc-helper: use drm_framebuffer flags

The "flags" parameter of the DRM_IOCTL_MODE_ADDFB2 ioctl must be
propagated and used by the driver.
The only possible value of flags is DRM_MODE_FB_INTERLACED.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Reviewed-by: Benjamin GAIGNARD <benjamin.gaignard@st.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>