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  1. 19 6月, 2016 1 次提交
  3. 11 6月, 2016 1 次提交
  5. 02 6月, 2016 1 次提交
  7. 30 5月, 2016 1 次提交
  9. 11 5月, 2016 1 次提交
  11. 04 5月, 2016 1 次提交
  13. 02 5月, 2016 1 次提交
  15. 07 4月, 2016 1 次提交
    • B
      drm/i915: fix deadlock on lid open · 42bf7b46
      由 Bjørn Mork 提交于 
      commit e2c8b870 moved modeset locking inside resume/suspend
functions, but missed a code path only executed on lid close/open
on older hardware. The result was a deadlock when closing and
opening the lid without suspending on such hardware:

 =============================================
 [ INFO: possible recursive locking detected ]
 4.6.0-rc1 #385 Not tainted
 ---------------------------------------------
 kworker/0:3/88 is trying to acquire lock:
  (&dev->mode_config.mutex){+.+.+.}, at: [<ffffffffa063e6a4>] intel_display_resume+0x4a/0x12f [i915]

 but task is already holding lock:
  (&dev->mode_config.mutex){+.+.+.}, at: [<ffffffffa02d0d4f>] drm_modeset_lock_all+0x3e/0xa6 [drm]

 other info that might help us debug this:
  Possible unsafe locking scenario:

        CPU0
        ----
   lock(&dev->mode_config.mutex);
   lock(&dev->mode_config.mutex);

  *** DEADLOCK ***

  May be due to missing lock nesting notation

 7 locks held by kworker/0:3/88:
  #0:  ("kacpi_notify"){++++.+}, at: [<ffffffff81068dfc>] process_one_work+0x14a/0x50b
  #1:  ((&dpc->work)#2){+.+.+.}, at: [<ffffffff81068dfc>] process_one_work+0x14a/0x50b
  #2:  ((acpi_lid_notifier).rwsem){++++.+}, at: [<ffffffff8106f874>] __blocking_notifier_call_chain+0x34/0x65
  #3:  (&dev_priv->modeset_restore_lock){+.+.+.}, at: [<ffffffffa0664cf6>] intel_lid_notify+0x3c/0xd9 [i915]
  #4:  (&dev->mode_config.mutex){+.+.+.}, at: [<ffffffffa02d0d4f>] drm_modeset_lock_all+0x3e/0xa6 [drm]
  #5:  (crtc_ww_class_acquire){+.+.+.}, at: [<ffffffffa02d0d59>] drm_modeset_lock_all+0x48/0xa6 [drm]
  #6:  (crtc_ww_class_mutex){+.+.+.}, at: [<ffffffffa02d0b2a>] modeset_lock+0x13c/0x1cd [drm]

 stack backtrace:
 CPU: 0 PID: 88 Comm: kworker/0:3 Not tainted 4.6.0-rc1 #385
 Hardware name: LENOVO 2776LEG/2776LEG, BIOS 6EET55WW (3.15 ) 12/19/2011
 Workqueue: kacpi_notify acpi_os_execute_deferred
  0000000000000000 ffff88022fd5f990 ffffffff8124af06 ffffffff825b39c0
  ffffffff825b39c0 ffff88022fd5fa60 ffffffff8108f547 ffff88022fd5fa70
  000000008108e817 ffff880230236cc0 0000000000000000 ffffffff825b39c0
 Call Trace:
  [<ffffffff8124af06>] dump_stack+0x67/0x90
  [<ffffffff8108f547>] __lock_acquire+0xdb5/0xf71
  [<ffffffff8108bd2c>] ? look_up_lock_class+0xbe/0x10a
  [<ffffffff8108fae2>] lock_acquire+0x137/0x1cb
  [<ffffffff8108fae2>] ? lock_acquire+0x137/0x1cb
  [<ffffffffa063e6a4>] ? intel_display_resume+0x4a/0x12f [i915]
  [<ffffffff8148202f>] mutex_lock_nested+0x7e/0x3a4
  [<ffffffffa063e6a4>] ? intel_display_resume+0x4a/0x12f [i915]
  [<ffffffffa063e6a4>] ? intel_display_resume+0x4a/0x12f [i915]
  [<ffffffffa02d0b2a>] ? modeset_lock+0x13c/0x1cd [drm]
  [<ffffffffa063e6a4>] intel_display_resume+0x4a/0x12f [i915]
  [<ffffffffa063e6a4>] ? intel_display_resume+0x4a/0x12f [i915]
  [<ffffffffa02d0b2a>] ? modeset_lock+0x13c/0x1cd [drm]
  [<ffffffffa02d0b2a>] ? modeset_lock+0x13c/0x1cd [drm]
  [<ffffffffa02d0bf7>] ? drm_modeset_lock+0x17/0x24 [drm]
  [<ffffffffa02d0c8b>] ? drm_modeset_lock_all_ctx+0x87/0xa1 [drm]
  [<ffffffffa0664d6a>] intel_lid_notify+0xb0/0xd9 [i915]
  [<ffffffff8106f4c6>] notifier_call_chain+0x4a/0x6c
  [<ffffffff8106f88d>] __blocking_notifier_call_chain+0x4d/0x65
  [<ffffffff8106f8b9>] blocking_notifier_call_chain+0x14/0x16
  [<ffffffffa0011215>] acpi_lid_send_state+0x83/0xad [button]
  [<ffffffffa00112a6>] acpi_button_notify+0x41/0x132 [button]
  [<ffffffff812b07df>] acpi_device_notify+0x19/0x1b
  [<ffffffff812c8570>] acpi_ev_notify_dispatch+0x49/0x64
  [<ffffffff812ab9fb>] acpi_os_execute_deferred+0x14/0x20
  [<ffffffff81068f17>] process_one_work+0x265/0x50b
  [<ffffffff810696f5>] worker_thread+0x1fc/0x2dd
  [<ffffffff810694f9>] ? rescuer_thread+0x309/0x309
  [<ffffffff810694f9>] ? rescuer_thread+0x309/0x309
  [<ffffffff8106e2d6>] kthread+0xe0/0xe8
  [<ffffffff8107bc47>] ? local_clock+0x19/0x22
  [<ffffffff81484f42>] ret_from_fork+0x22/0x40
  [<ffffffff8106e1f6>] ? kthread_create_on_node+0x1b5/0x1b5

Fixes: e2c8b870 ("drm/i915: Use atomic helpers for suspend, v2.")
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: NBjørn Mork <bjorn@mork.no>
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459328913-13719-1-git-send-email-bjorn@mork.no
(cherry picked from commit 9f54d4bd)
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
      42bf7b46
  17. 30 3月, 2016 1 次提交
    • B
      drm/i915: fix deadlock on lid open · 9f54d4bd
      由 Bjørn Mork 提交于 
      commit e2c8b870 moved modeset locking inside resume/suspend
functions, but missed a code path only executed on lid close/open
on older hardware. The result was a deadlock when closing and
opening the lid without suspending on such hardware:

 =============================================
 [ INFO: possible recursive locking detected ]
 4.6.0-rc1 #385 Not tainted
 ---------------------------------------------
 kworker/0:3/88 is trying to acquire lock:
  (&dev->mode_config.mutex){+.+.+.}, at: [<ffffffffa063e6a4>] intel_display_resume+0x4a/0x12f [i915]

 but task is already holding lock:
  (&dev->mode_config.mutex){+.+.+.}, at: [<ffffffffa02d0d4f>] drm_modeset_lock_all+0x3e/0xa6 [drm]

 other info that might help us debug this:
  Possible unsafe locking scenario:

        CPU0
        ----
   lock(&dev->mode_config.mutex);
   lock(&dev->mode_config.mutex);

  *** DEADLOCK ***

  May be due to missing lock nesting notation

 7 locks held by kworker/0:3/88:
  #0:  ("kacpi_notify"){++++.+}, at: [<ffffffff81068dfc>] process_one_work+0x14a/0x50b
  #1:  ((&dpc->work)#2){+.+.+.}, at: [<ffffffff81068dfc>] process_one_work+0x14a/0x50b
  #2:  ((acpi_lid_notifier).rwsem){++++.+}, at: [<ffffffff8106f874>] __blocking_notifier_call_chain+0x34/0x65
  #3:  (&dev_priv->modeset_restore_lock){+.+.+.}, at: [<ffffffffa0664cf6>] intel_lid_notify+0x3c/0xd9 [i915]
  #4:  (&dev->mode_config.mutex){+.+.+.}, at: [<ffffffffa02d0d4f>] drm_modeset_lock_all+0x3e/0xa6 [drm]
  #5:  (crtc_ww_class_acquire){+.+.+.}, at: [<ffffffffa02d0d59>] drm_modeset_lock_all+0x48/0xa6 [drm]
  #6:  (crtc_ww_class_mutex){+.+.+.}, at: [<ffffffffa02d0b2a>] modeset_lock+0x13c/0x1cd [drm]

 stack backtrace:
 CPU: 0 PID: 88 Comm: kworker/0:3 Not tainted 4.6.0-rc1 #385
 Hardware name: LENOVO 2776LEG/2776LEG, BIOS 6EET55WW (3.15 ) 12/19/2011
 Workqueue: kacpi_notify acpi_os_execute_deferred
  0000000000000000 ffff88022fd5f990 ffffffff8124af06 ffffffff825b39c0
  ffffffff825b39c0 ffff88022fd5fa60 ffffffff8108f547 ffff88022fd5fa70
  000000008108e817 ffff880230236cc0 0000000000000000 ffffffff825b39c0
 Call Trace:
  [<ffffffff8124af06>] dump_stack+0x67/0x90
  [<ffffffff8108f547>] __lock_acquire+0xdb5/0xf71
  [<ffffffff8108bd2c>] ? look_up_lock_class+0xbe/0x10a
  [<ffffffff8108fae2>] lock_acquire+0x137/0x1cb
  [<ffffffff8108fae2>] ? lock_acquire+0x137/0x1cb
  [<ffffffffa063e6a4>] ? intel_display_resume+0x4a/0x12f [i915]
  [<ffffffff8148202f>] mutex_lock_nested+0x7e/0x3a4
  [<ffffffffa063e6a4>] ? intel_display_resume+0x4a/0x12f [i915]
  [<ffffffffa063e6a4>] ? intel_display_resume+0x4a/0x12f [i915]
  [<ffffffffa02d0b2a>] ? modeset_lock+0x13c/0x1cd [drm]
  [<ffffffffa063e6a4>] intel_display_resume+0x4a/0x12f [i915]
  [<ffffffffa063e6a4>] ? intel_display_resume+0x4a/0x12f [i915]
  [<ffffffffa02d0b2a>] ? modeset_lock+0x13c/0x1cd [drm]
  [<ffffffffa02d0b2a>] ? modeset_lock+0x13c/0x1cd [drm]
  [<ffffffffa02d0bf7>] ? drm_modeset_lock+0x17/0x24 [drm]
  [<ffffffffa02d0c8b>] ? drm_modeset_lock_all_ctx+0x87/0xa1 [drm]
  [<ffffffffa0664d6a>] intel_lid_notify+0xb0/0xd9 [i915]
  [<ffffffff8106f4c6>] notifier_call_chain+0x4a/0x6c
  [<ffffffff8106f88d>] __blocking_notifier_call_chain+0x4d/0x65
  [<ffffffff8106f8b9>] blocking_notifier_call_chain+0x14/0x16
  [<ffffffffa0011215>] acpi_lid_send_state+0x83/0xad [button]
  [<ffffffffa00112a6>] acpi_button_notify+0x41/0x132 [button]
  [<ffffffff812b07df>] acpi_device_notify+0x19/0x1b
  [<ffffffff812c8570>] acpi_ev_notify_dispatch+0x49/0x64
  [<ffffffff812ab9fb>] acpi_os_execute_deferred+0x14/0x20
  [<ffffffff81068f17>] process_one_work+0x265/0x50b
  [<ffffffff810696f5>] worker_thread+0x1fc/0x2dd
  [<ffffffff810694f9>] ? rescuer_thread+0x309/0x309
  [<ffffffff810694f9>] ? rescuer_thread+0x309/0x309
  [<ffffffff8106e2d6>] kthread+0xe0/0xe8
  [<ffffffff8107bc47>] ? local_clock+0x19/0x22
  [<ffffffff81484f42>] ret_from_fork+0x22/0x40
  [<ffffffff8106e1f6>] ? kthread_create_on_node+0x1b5/0x1b5

Fixes: e2c8b870 ("drm/i915: Use atomic helpers for suspend, v2.")
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: NBjørn Mork <bjorn@mork.no>
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459328913-13719-1-git-send-email-bjorn@mork.no
      9f54d4bd
  19. 29 3月, 2016 1 次提交
  21. 17 3月, 2016 1 次提交
  23. 09 3月, 2016 1 次提交
  25. 01 3月, 2016 1 次提交
  27. 22 2月, 2016 1 次提交
  29. 17 2月, 2016 1 次提交
  31. 09 2月, 2016 1 次提交
    • L
      drm/i915: Switch DDC when reading the EDID · 4eddaeec
      由 Lukas Wunner 提交于 
      The pre-retina MacBook Pro uses an LVDS panel and a gmux controller
to switch the panel between its two GPUs. The panel mode in VBIOS
is notoriously bogus on these machines and some models have no
VBIOS at all.

Use drm_get_edid_switcheroo() in lieu of drm_get_edid() on LVDS
if the vga_switcheroo handler is capable of temporarily switching
the panel's DDC lines to the integrated GPU. This allows us to
retrieve the EDID if the panel is currently muxed to the discrete GPU.

This only enables EDID probing on the pre-retina MBP (2008 - 2013).
The retina MBP (2012 - present) uses eDP and gmux is not capable of
switching AUX separately from the main link on these models.
This will be addressed in later patches.

List of pre-retina MBPs with dual GPUs, one of them Intel:
    [MBP  6,2 2010  intel ILK + nvidia GT216  pre-retina  15"]
    [MBP  6,1 2010  intel ILK + nvidia GT216  pre-retina  17"]
    [MBP  8,2 2011  intel SNB + amd turks     pre-retina  15"]
    [MBP  8,3 2011  intel SNB + amd turks     pre-retina  17"]
    [MBP  9,1 2012  intel IVB + nvidia GK107  pre-retina  15"]

v3: Commit newly added due to introduction of drm_get_edid_switcheroo()
    wrapper which drivers need to opt-in to.

v5: Rebase on "vga_switcheroo: Add handler flags infrastructure",
    i.e. call drm_get_edid_switcheroo() only if the handler
    indicates that DDC is switchable.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=88861
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=61115Tested-by: NLukas Wunner <lukas@wunner.de>
    [MBP  9,1 2012  intel IVB + nvidia GK107  pre-retina  15"]
Signed-off-by: NLukas Wunner <lukas@wunner.de>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/bb095e14a2259be7fdd10092f9d6874a9be8f27b.1452525860.git.lukas@wunner.de
      4eddaeec
  33. 11 12月, 2015 1 次提交
  35. 18 11月, 2015 1 次提交
    • V
      drm/i915: Type safe register read/write · f0f59a00
      由 Ville Syrjälä 提交于 
      Make I915_READ and I915_WRITE more type safe by wrapping the register
offset in a struct. This should eliminate most of the fumbles we've had
with misplaced parens.

This only takes care of normal mmio registers. We could extend the idea
to other register types and define each with its own struct. That way
you wouldn't be able to accidentally pass the wrong thing to a specific
register access function.

The gpio_reg setup is probably the ugliest thing left. But I figure I'd
just leave it for now, and wait for some divine inspiration to strike
before making it nice.

As for the generated code, it's actually a bit better sometimes. Eg.
looking at i915_irq_handler(), we can see the following change:
  lea    0x70024(%rdx,%rax,1),%r9d
  mov    $0x1,%edx
- movslq %r9d,%r9
- mov    %r9,%rsi
- mov    %r9,-0x58(%rbp)
- callq  *0xd8(%rbx)
+ mov    %r9d,%esi
+ mov    %r9d,-0x48(%rbp)
 callq  *0xd8(%rbx)

So previously gcc thought the register offset might be signed and
decided to sign extend it, just in case. The rest appears to be
mostly just minor shuffling of instructions.

v2: i915_mmio_reg_{offset,equal,valid}() helpers added
    s/_REG/_MMIO/ in the register defines
    mo more switch statements left to worry about
    ring_emit stuff got sorted in a prep patch
    cmd parser, lrc context and w/a batch buildup also in prep patch
    vgpu stuff cleaned up and moved to a prep patch
    all other unrelated changes split out
v3: Rebased due to BXT DSI/BLC, MOCS, etc.
v4: Rebased due to churn, s/i915_mmio_reg_t/i915_reg_t/
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1447853606-2751-1-git-send-email-ville.syrjala@linux.intel.com
      f0f59a00
  37. 11 11月, 2015 1 次提交
  39. 13 10月, 2015 1 次提交
  41. 30 9月, 2015 1 次提交
  43. 04 9月, 2015 2 次提交
  45. 26 8月, 2015 1 次提交
    • M
      drm/i915: LVDS pixel clock check · 7f7b58cc
      由 Mika Kahola 提交于 
      It is possible the we request to have a mode that has
higher pixel clock than our HW can support. This patch
checks if requested pixel clock is lower than the one
supported by the HW. The requested mode is discarded
if we cannot support the requested pixel clock.

This patch applies to LVDS.

V2:
- removed computation for max pixel clock

V3:
- cleanup by removing unnecessary lines

V4:
- moved supported dotclock check from mode_valid() to intel_lvds_init()

V5:
- dotclock check moved back to mode_valid() function
- dotclock check for fixed mode
Signed-off-by: NMika Kahola <mika.kahola@intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
      7f7b58cc
  47. 14 8月, 2015 1 次提交
  49. 14 7月, 2015 1 次提交
  51. 07 7月, 2015 1 次提交
  53. 24 6月, 2015 1 次提交
  55. 22 6月, 2015 1 次提交
    • C
      drm/i915: Ignore LVDS presence in VBT flag if the LVDS is enabled by BIOS · eebaed64
      由 Chris Wilson 提交于 
      On older gen, pre-Ironlake, parts there is no hardwired pin to report
the presence of an LVDS panel. Instead, we have to rely on the VBT to
declare whether the machine has a panel or not. Though notoriously
unreliable, so far we have erred on the side of false-positives and have
required a list of machines which end up falsely reporting a panel as
present. However, we now have reports of false-negatives, machines with
an LVDS that are being ignored due to the VBT not declaring the panel.
This patch ignores the VBT setting if the BIOS has already enabled the
LVDS panel (and on Ironlake+ we also have the hardware presence pin).

It fixes the Samsung NP680Z5E-X01FR in the bug report, but is likely to
result in more false-positives, and since we rely on the BIOS to enable
the panel, there are likely different circumstances where the BIOS will
not enable that panel (and so we may see the same machine with and
without a panel all on the whim of the BIOS).

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=90979
Reported-and-tested-by: lysxia@gmail.com
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: NDamien Lespiau <damien.lespiau@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
      eebaed64
  57. 05 5月, 2015 2 次提交
  59. 13 4月, 2015 2 次提交
  61. 01 4月, 2015 3 次提交
  63. 27 3月, 2015 1 次提交
  65. 26 3月, 2015 1 次提交
  67. 26 2月, 2015 1 次提交
    • M
      drm/i915: Use enabled value from crtc_state rather than crtc (v2) · 83d65738
      由 Matt Roper 提交于 
      As vendors transition their drivers from legacy to atomic there's some
duplication of data between drm_crtc and drm_crtc_state (since
unconverted drivers likely won't have a state structure).

i915 is partially converted and does have a crtc->state structure, but
still uses direct crtc fields internally in many places, which causes
the two sets of data to get out of sync.  As of commit

        commit 31c946e8
        Author: Daniel Vetter <daniel.vetter@ffwll.ch>
        Date:   Sun Feb 22 12:24:17 2015 +0100

            drm: If available use atomic state in getcrtc ioctl

            This way drivers fully converted to atomic don't need to update these
            legacy state variables in their modeset code any more.
Reviewed-by: NRob Clark <robdclark@gmail.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>

the DRM core starts assuming that the presence of a ->state structure
implies that it should make use of the values stored there which, on
i915, leads to the core code using stale values for CRTC 'enabled'
status.

Let's switch over to using the state value of 'enable' internally rather
than using the drm_crtc field.  This ensures that our driver internals
are working from the same data that the DRM core is, avoiding
mismatches.

This patch was generated with Coccinelle using the following semantic
patch:

        <smpl>
        @@
        struct drm_crtc C;
        struct drm_crtc *CP;
        @@
        (
        - C.enabled
        + C.state->enable
        |
        - CP->enabled
        + CP->state->enable
        )

        // For assignments, we still update the legacy value as well as the state value
        // so add an extra assignment statement for that.
        @@
        struct drm_crtc C;
        struct drm_crtc *CP;
        expression E;
        @@
        (
          C.state->enable = E;
        + C.enabled = E;
        |
          CP->state->enable = E;
        + CP->enabled = E;
        )
        </smpl>

The crtc->mode and crtc->hwmode fields should probably be transitioned
over as well eventually, but we seem to do an okay job of keeping those
up-to-date already so I want to minimize the changes that will clash
with Ander's in-progress atomic work.

v2: Don't remove the assignments to the legacy value when we assign to
    the state value.  A second cocci stanza takes care of adding the
    legacy assignment back where appropriate.  (Daniel)

Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: NMatt Roper <matthew.d.roper@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
      83d65738
  69. 27 1月, 2015 1 次提交
    • M
      drm/i915: Add atomic_get_property entrypoint for connectors (v2) · 2545e4a6
      由 Matt Roper 提交于 
      Even though we only support atomic plane updates at the moment, we still
need to add an .atomic_get_property() entrypoint for connectors before
we allow the driver to flip on the DRIVER_ATOMIC bit.  As soon as that
bit gets set, the DRM core will start adding atomic connector properties
(in addition to the plane properties we care about at the moment), so we
need to be able to handle the new way the DRM core will interact with
us.

For simplicity, we just lookup driver-specific connector properties in
the usual shadow array maintained by the core.  Once we get real atomic
modeset support for crtc's and planes, this code should be re-written to
pull the data out of crtc/connector state structures.

v2: Fix intel_dvo and intel_dsi that I missed on the first pass (Ander)
Signed-off-by: NMatt Roper <matthew.d.roper@intel.com>
Reviewed-by: NAnder Conselvan de Oliveira <conselvan2@gmail.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
      2545e4a6