Commit Graph

448 Commits

Author SHA1 Message Date
Dave Airlie
e7c8e54440 Merge tag 'topic/drm-misc-2016-04-01' of git://anongit.freedesktop.org/drm-intel into drm-next
* tag 'topic/drm-misc-2016-04-01' of git://anongit.freedesktop.org/drm-intel:
  drm: Add new DCS commands in the enum list
  drm: Make uapi headers C89 pendantic compliant
  drm/atomic: export drm_atomic_helper_wait_for_fences()
  drm: Untangle __KERNEL__ guards
  drm: Move DRM_MODE_OBJECT_* to uapi headers
  drm: align #include directives with libdrm in uapi headers
  drm: Make drm.h uapi header safe for C++
  vgacon: dummy implementation for vgacon_text_force
  drm/sysfs: Nuke TV/DVI property files
  drm/ttm: Remove TTM_HAS_AGP
  drm: bridge/dw-hdmi: Remove pre_enable/post_disable dummy funcs
  Revert "drm: Don't pass negative delta to ktime_sub_ns()"
  drm/atmel: Fixup drm_connector_/unplug/unregister/_all
  drm: Rename drm_connector_unplug_all() to drm_connector_unregister_all()
  drm: bridge: Make (pre/post) enable/disable callbacks optional
2016-04-06 09:39:01 +10:00
Daniel Vetter
8812f38141 drm: Move DRM_MODE_OBJECT_* to uapi headers
These type defines are officially part of the uapi, but ended up in
the wrong headers somehow when we split them all.

Cc: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459347584-30566-3-git-send-email-daniel.vetter@ffwll.ch
2016-03-30 21:08:33 +02:00
Alexey Brodkin
6c87e5c3ec drm: Rename drm_connector_unplug_all() to drm_connector_unregister_all()
Current name is a bit misleading because what that helper function
really does it calls drm_connector_unregister() for all connectors.

This all has nothing to do with hotplugging so let's name things
properly.

And while at it remove potentially dangerous locking around
drm_connector_unregister() in rcar_du_remove() as mentioned
in kerneldoc for drm_connector_unregister_all().

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: linux-renesas-soc@vger.kernel.org
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1458722577-20283-2-git-send-email-abrodkin@synopsys.com
2016-03-29 10:14:15 +02:00
Laurent Pinchart
11622d4c63 drm: bridge: Make (pre/post) enable/disable callbacks optional
Instead of forcing bridges to implement empty callbacks make them all
optional.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1456480266-7904-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com
Acked-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2016-03-29 08:34:05 +02:00
Dave Airlie
5e2368a3bb drm/panel: Changes for v4.6-rc1
This contains a refactoring of parts of the DSI core to allow creating
 DSI devices from non-DSI control busses (i.e. I2C, SPI, ...).
 
 Other than that there's support for a couple of new panels as well as
 a few cleanup patches.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABCAAGBQJW6Vc2AAoJEN0jrNd/PrOhh98P+wdrQqsctsSHFuaCpQ9mpgpO
 qj8M9R1wfeT279e7HpmI0HEWfoPJtC+G2uzIqhmLyBmM9YJIbJK5Bwh6jsYZoNwV
 Nx4hpBTBW5lwhJGrttDYVyvox+JO2TVcP2/8g4JHBmRd7UHddyeynhBZTAia5xoW
 2sfSs3YgkWzVoTXlWPBAliNHZIoA5DOClO3W5n60ubeIB4nVWHhjwA6SX19tkI8U
 hUWbazJVwtt9C4UP32fxa5fgViJjT3X0HX9qEk7Wr4CJ85j4dvVrjX/vI++qFSFI
 YE8/zUZS9k2qe8cJWokGpHgiSOAX7+9IA8aZMGxS3tN9fFrUU11vSjVY/nrboFFP
 8NRYC/wC6nd7D7ri0b/yNMPefFfwzCYDubGFAwvGKVXjbd/uwZE3jhLuL0bvICvG
 QVwhOG5ghbBWigie4bwD41GCRrk2pIuh/EefDSAPYmka4MC53CGWFpFXLs1aRVxL
 CVbaUzFkcqMpU/gDUuPZk2qDcmBat6yG0wcmX5rUIvUVUNTQKkMUSSEH2dxp7fsV
 YmXu9orGNgnM45Q92e7tVaBEw1sNWyDhdFaLk4QX9I+No2n4JMk14pxH7VuNXufR
 EqVafpOxregXDaH9Xtg/jVvW1AF+IH/t3S2uuqhRmP6tLQL0kAhnwh1zgDp1o/Pb
 pC8GiBIt5hzQApOxyYPI
 =zrRb
 -----END PGP SIGNATURE-----

Merge tag 'drm/panel/for-4.6-rc1' of http://anongit.freedesktop.org/git/tegra/linux into drm-next

drm/panel: Changes for v4.6-rc1

This contains a refactoring of parts of the DSI core to allow creating
DSI devices from non-DSI control busses (i.e. I2C, SPI, ...).

Other than that there's support for a couple of new panels as well as
a few cleanup patches.

* tag 'drm/panel/for-4.6-rc1' of http://anongit.freedesktop.org/git/tegra/linux:
  drm/bridge: Make (pre/post) enable/disable callbacks optional
  drm/panel: simple: Add URT UMSH-8596MD-xT panels support
  dt-bindings: Add URT UMSH-8596MD-xT panel bindings
  of: Add United Radiant Technology Corporation vendor prefix
  drm/panel: simple: Support for LG lp120up1 panel
  dt-bindings: Add LG lp120up1 panel bindings
  drm/panel: simple: Fix g121x1_l03 hsync/vsync polarity
  drm/dsi: Get DSI host by DT device node
  drm/dsi: Add routine to unregister a DSI device
  drm/dsi: Try to match non-DT DSI devices
  drm/dsi: Use mipi_dsi_device_register_full() for DSI device creation
  drm/dsi: Check for CONFIG_OF when defining of_mipi_dsi_device_add()
2016-03-17 08:09:44 +10:00
Dave Airlie
1a4be38a3a Merge tag 'topic/drm-misc-2016-03-14' of git://anongit.freedesktop.org/drm-intel into drm-next
* tag 'topic/drm-misc-2016-03-14' of git://anongit.freedesktop.org/drm-intel: (27 commits)
  drm: atomic helper: do not unreference error pointer
  drm/edid: Extract SADs properly from multiple audio data blocks
  drm: fix blob pointer check
  drm: introduce pipe color correction properties
  drm/atomic: Clean up update_connector_routing.
  drm/atomic: Clean up steal_encoder, v2.
  drm/atomic: Handle encoder assignment conflicts in a separate check, v3.
  drm/atomic: Handle encoder stealing from set_config better.
  drm/atomic: Always call steal_encoder, v2.
  drm/ast: removed optional dummy crtc mode_fixup function.
  drm/bochs: removed optional dummy crtc mode_fixup function.
  drm/fsl-dcu: removed optional dummy crtc mode_fixup function.
  drm/virtio: removed optional dummy crtc mode_fixup function.
  drm/nouveau/dispnv04: removed optional dummy crtc mode_fixup function.
  drm/atmel-hlcdc: remove optional dummy crtc mode_fixup function.
  drm/sti: removed optional dummy crtc mode_fixup function.
  drm/shmobile: removed optional dummy crtc mode_fixup function.
  drm/msm/mdp: removed optional dummy crtc mode_fixup function.
  drm/omapdrm: removed optional dummy crtc mode_fixup function.
  drm/rcar-du: removed optional dummy crtc mode_fixup function.
  ...
2016-03-16 11:09:26 +10:00
Dave Airlie
9b61c0fcdf Merge drm-fixes into drm-next.
Nouveau wanted this to avoid some worse conflicts when I merge that.
2016-03-14 09:46:02 +10:00
Lionel Landwerlin
5488dc16fd drm: introduce pipe color correction properties
Patch based on a previous series by Shashank Sharma.

This introduces optional properties to enable color correction at the
pipe level. It relies on 3 transformations applied to every pixels
displayed. First a lookup into a degamma table, then a multiplication
of the rgb components by a 3x3 matrix and finally another lookup into
a gamma table.

The following properties can be added to a pipe :
  - DEGAMMA_LUT : blob containing degamma LUT
  - DEGAMMA_LUT_SIZE : number of elements in DEGAMMA_LUT
  - CTM : transformation matrix applied after the degamma LUT
  - GAMMA_LUT : blob containing gamma LUT
  - GAMMA_LUT_SIZE : number of elements in GAMMA_LUT

DEGAMMA_LUT_SIZE and GAMMA_LUT_SIZE are read only properties, set by
the driver to tell userspace applications what sizes should be the
lookup tables in DEGAMMA_LUT and GAMMA_LUT.

A helper is also provided so legacy gamma correction is redirected
through these new properties.

v2: Register LUT size properties as range

v3: Fix round in drm_color_lut_get_value() helper
    More docs on how degamma/gamma properties are used

v4: Update contributors

v5: Rename CTM_MATRIX property to CTM (Doh!)
    Add legacy gamma_set atomic helper
    Describe CTM/LUT acronyms in the kernel doc

v6: Fix missing blob unref in drm_atomic_helper_crtc_reset

Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Kumar, Kiran S <kiran.s.kumar@intel.com>
Signed-off-by: Kausal Malladi <kausalmalladi@gmail.com>
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Rob Bradford <robert.bradford@intel.com>
[danvet: CrOS maintainers are also happy with the userspacde side:
https://codereview.chromium.org/1182063002/ ]
Reviewed-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1456506302-640-4-git-send-email-lionel.g.landwerlin@intel.com
2016-03-08 13:57:32 +01:00
Maarten Lankhorst
40616a26d1 drm/atomic: Handle encoder stealing from set_config better.
Instead of failing with -EINVAL when conflicting encoders are found,
the legacy set_config will disable other connectors when encoders
conflict.

With the previous commit this becomes a lot easier to implement.
set_config only adds connectors to the state that are modified,
and because of the previous commit that calls add_affected_connectors
only on set->crtc it means any connector not part of the modeset can
be stolen from. We disable the connector in that case, and possibly
the crtc if required.

Atomic modeset itself still doesn't allow encoder stealing, the results
would be too unpredictable.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1456996662-8704-5-git-send-email-maarten.lankhorst@linux.intel.com
2016-03-08 11:04:34 +01:00
Laurent Pinchart
c8a3b2ae07 drm/bridge: Make (pre/post) enable/disable callbacks optional
Instead of forcing bridges to implement empty callbacks make them all
optional.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-03-02 17:31:03 +01:00
Maarten Lankhorst
5fff80bbdb drm/atomic: Allow for holes in connector state, v2.
Because we record connector_mask using 1 << drm_connector_index now
the connector_mask should stay the same even when other connectors
are removed. This was not the case with MST, in that case when removing
a connector all other connectors may change their index.

This is fixed by waiting until the first get_connector_state to allocate
connector_state, and force reallocation when state is too small.

As a side effect connector arrays no longer have to be preallocated,
and can be allocated on first use which means a less allocations in
the page flip only path.

Changes since v1:
- Whitespace. (Ville)
- Call ida_remove when destroying the connector. (Ville)
- u32 alloc -> int. (Ville)

Fixes: 14de6c44d1 ("drm/atomic: Remove drm_atomic_connectors_for_crtc.")
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Lyude <cpaul@redhat.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-02-19 13:24:03 +10:00
Ville Syrjälä
4c61716c2b drm: Add drm_format_plane_width() and drm_format_plane_height()
Add a few helpers to get the dimensions of the chroma plane(s).

v2: Add kernel-doc (Daniel)
v3: Fix kerneldoc "Returns:" style (Daniel)
    Uninline the functions and check for num_planes (Daniel)
v4: Add the required EXPORT_SYMBOL()s

Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1455031784-10941-1-git-send-email-ville.syrjala@linux.intel.com
2016-02-09 16:34:58 +01:00
Lukas Wunner
5cb8eaa227 drm/edid: Switch DDC when reading the EDID
Originally by Seth Forshee <seth.forshee@canonical.com>, 2012-10-04:
    Some dual graphics machines support muxing the DDC separately from
    the display, so make use of this functionality when reading the EDID
    on the inactive GPU. Also serialize drm_get_edid() with a mutex to
    avoid races on the DDC mux state.

Modified by Dave Airlie <airlied@gmail.com>, 2012-12-22:
    I can't figure out why I didn't like this, but I rewrote this [...]
    to lock/unlock the ddc lines [...]. I think I'd prefer something
    like that otherwise the interface got really ugly.

Modified by Lukas Wunner <lukas@wunner.de>, 2015-04 - 2015-09:
    v3:   Move vga_switcheroo calls to a wrapper around drm_get_edid()
          which drivers can call on muxed machines. This avoids other
          drivers having to go through the vga_switcheroo motions even
          though they are never used on a muxed platform
          (Thierry Reding, Daniel Vetter, Alex Deucher)

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=88861
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=61115
Tested-by: Pierre Moreau <pierre.morrow@free.fr>
    [MBP  5,3 2009  nvidia MCP79 + G96        pre-retina  15"]
Tested-by: William Brown <william@blackhats.net.au>
    [MBP  8,2 2011  intel SNB + amd turks     pre-retina  15"]
Tested-by: Lukas Wunner <lukas@wunner.de>
    [MBP  9,1 2012  intel IVB + nvidia GK107  pre-retina  15"]
Cc: Seth Forshee <seth.forshee@canonical.com>
Cc: Dave Airlie <airlied@gmail.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/b898d0da4c134f2642d0122479006863e1830723.1452525860.git.lukas@wunner.de
2016-02-09 11:21:09 +01:00
Maarten Lankhorst
e87a52b389 drm/atomic: Add encoder_mask to crtc_state, v3.
This allows iteration over encoders without requiring connection_mutex.

Changes since v1:
- Add a set_best_encoder helper function and update encoder_mask inside
  it.
Changes since v2:
- Relax the WARN_ON(!crtc), with explanation.
- Call set_best_encoder when connector is moved between crtc's.
- Add some paranoia to steal_encoder to prevent accidentally setting
  best_encoder to NULL.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/56AA200A.6070501@linux.intel.com
2016-02-09 11:21:06 +01:00
Maarten Lankhorst
ead8b66570 drm/core: Add drm_for_each_encoder_mask, v2.
This is similar to the other drm_for_each_*_mask functions.

Changes since v1:
- Use for_each_if

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1452160762-30487-3-git-send-email-maarten.lankhorst@linux.intel.com
2016-02-09 11:21:04 +01:00
Maarten Lankhorst
47d7777f99 drm/core: Add drm_encoder_index.
This is useful for adding encoder_mask in crtc_state.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1452160762-30487-2-git-send-email-maarten.lankhorst@linux.intel.com
2016-02-09 11:21:04 +01:00
Daniel Vetter
4cba68507c drm/atomic-helper: Reject legacy flips on a disabled pipe
We want this for consistency with existing page_flip semantics.

Since this spurred quite a discussion on IRC also document why we
reject event generation when the pipe is off: It's not that it's hard
to implement, but userspace has a track recording which proves that it's
way too easy to accidentally abuse and cause havoc. We want to make
sure userspace doesn't get away with that.

v2: Somehow thought we do reject events already, but that code only
existed in my imagination ... Also suggestions from Thierry.

Cc: Daniel Stone <daniels@collabora.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449564561-3896-4-git-send-email-daniel.vetter@ffwll.ch
2016-01-05 10:07:51 +01:00
Maarten Lankhorst
4cd9fa529d drm/atomic: add connector mask to drm_crtc_state.
It can be useful to iterate over connectors without grabbing
connection_mutex. It can also be used to see how many connectors
are on a crtc without iterating over the list.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1451908400-25147-4-git-send-email-maarten.lankhorst@linux.intel.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2016-01-05 09:43:33 +01:00
Daniel Vetter
d55f5320c7 drm: Move more framebuffer doc from docbook to kerneldoc
I missed a few paragraphs in the docbook that need to be pulled into
the fbdev vfunc docs.

v2: Spelling fixes from Thierry.

Cc: Thierry Reding <treding@nvidia.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449564561-3896-3-git-send-email-daniel.vetter@ffwll.ch
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-12-15 10:22:27 +01:00
Ville Syrjälä
9f4c97a236 drm: Add plane->name and use it in debug prints
Show a sensible name for the plane in debug mesages. The driver
may supply its own name, otherwise the core genrates the name
("plane-0", "plane-1" etc.).

v2: kstrdup() the name passed by the caller (Jani)
v3: Generate a default name if the driver doesn't supply one

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449592922-5545-7-git-send-email-ville.syrjala@linux.intel.com
2015-12-11 09:13:53 +01:00
Ville Syrjälä
fa3ab4c211 drm: Add crtc->name and use it in debug messages
Show a sensible name for the crtc in debug mesages. The driver may
supply its own name, otherwise the core genrates the name
("crtc-0", "crtc-1" etc.).

v2: kstrdup() the name passed by the caller (Jani)
v3: Generate a default name if the driver doesn't supply one

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449592922-5545-6-git-send-email-ville.syrjala@linux.intel.com
2015-12-11 09:13:48 +01:00
Ville Syrjälä
13a3d91f17 drm: Pass 'name' to drm_encoder_init()
Done with coccinelle for the most part. However, it thinks '...' is
part of the semantic patch, so I put an 'int DOTDOTDOT' placeholder
in its place and got rid of it with sed afterwards.

@@
identifier dev, encoder, funcs;
@@
 int drm_encoder_init(struct drm_device *dev,
                      struct drm_encoder *encoder,
                      const struct drm_encoder_funcs *funcs,
                      int encoder_type
+                     ,const char *name, int DOTDOTDOT
                      )
{ ... }

@@
identifier dev, encoder, funcs;
@@
 int drm_encoder_init(struct drm_device *dev,
                      struct drm_encoder *encoder,
                      const struct drm_encoder_funcs *funcs,
                      int encoder_type
+                     ,const char *name, int DOTDOTDOT
                      );

@@
expression E1, E2, E3, E4;
@@
 drm_encoder_init(E1, E2, E3, E4
+                 ,NULL
                  )

v2: Add ', or NULL...' to @name kernel doc (Jani)
    Annotate the function with __printf() attribute (Jani)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449670818-2966-1-git-send-email-ville.syrjala@linux.intel.com
2015-12-11 09:13:20 +01:00
Ville Syrjälä
b0b3b79511 drm: Pass 'name' to drm_universal_plane_init()
Done with coccinelle for the most part. It choked on
msm/mdp/mdp5/mdp5_plane.c like so:
"BAD:!!!!!  enum drm_plane_type type;"
No idea how to deal with that, so I just fixed that up
by hand.

Also it thinks '...' is part of the semantic patch, so I put an
'int DOTDOTDOT' placeholder in its place and got rid of it with
sed afterwards.

I didn't convert drm_plane_init() since passing the varargs through
would mean either cpp macros or va_list, and I figured we don't
care about these legacy functions enough to warrant the extra pain.

@@
typedef uint32_t;
identifier dev, plane, possible_crtcs, funcs, formats, format_count, type;
@@
 int drm_universal_plane_init(struct drm_device *dev,
                              struct drm_plane *plane,
                              unsigned long possible_crtcs,
                              const struct drm_plane_funcs *funcs,
                              const uint32_t *formats,
                              unsigned int format_count,
                              enum drm_plane_type type
+                             ,const char *name, int DOTDOTDOT
                              )
{ ... }

@@
identifier dev, plane, possible_crtcs, funcs, formats, format_count, type;
@@
 int drm_universal_plane_init(struct drm_device *dev,
                              struct drm_plane *plane,
                              unsigned long possible_crtcs,
                              const struct drm_plane_funcs *funcs,
                              const uint32_t *formats,
                              unsigned int format_count,
                              enum drm_plane_type type
+                             ,const char *name, int DOTDOTDOT
                              );

@@
expression E1, E2, E3, E4, E5, E6, E7;
@@
 drm_universal_plane_init(E1, E2, E3, E4, E5, E6, E7
+                         ,NULL
                          )

v2: Split crtc and plane changes apart
    Pass NUL for no-name instead of ""
    Leave drm_plane_init() alone
v3: Add ', or NULL...' to @name kernel doc (Jani)
    Annotate the function with __printf() attribute (Jani)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449670795-2853-1-git-send-email-ville.syrjala@linux.intel.com
2015-12-11 09:13:10 +01:00
Ville Syrjälä
f98828769c drm: Pass 'name' to drm_crtc_init_with_planes()
Done with coccinelle for the most part. However, it thinks '...' is
part of the semantic patch, so I put an 'int DOTDOTDOT' placeholder
in its place and got rid of it with sed afterwards.

I didn't convert drm_crtc_init() since passing the varargs through
would mean either cpp macros or va_list, and I figured we don't
care about these legacy functions enough to warrant the extra pain.

@@
identifier dev, crtc, primary, cursor, funcs;
@@
 int drm_crtc_init_with_planes(struct drm_device *dev,
                               struct drm_crtc *crtc,
                               struct drm_plane *primary, struct drm_plane *cursor,
                               const struct drm_crtc_funcs *funcs
+                              ,const char *name, int DOTDOTDOT
                               )
{ ... }

@@
identifier dev, crtc, primary, cursor, funcs;
@@
 int drm_crtc_init_with_planes(struct drm_device *dev,
                               struct drm_crtc *crtc,
                               struct drm_plane *primary, struct drm_plane *cursor,
                               const struct drm_crtc_funcs *funcs
+                              ,const char *name, int DOTDOTDOT
                               );

@@
expression E1, E2, E3, E4, E5;
@@
 drm_crtc_init_with_planes(E1, E2, E3, E4, E5
+                          ,NULL
                           )

v2: Split crtc and plane changes apart
    Pass NULL for no-name instead of ""
    Leave drm_crtc_init() alone
v3: Add ', or NULL...' to @name kernel doc (Jani)
    Annotate the function with __printf() attribute (Jani)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449670771-2751-1-git-send-email-ville.syrjala@linux.intel.com
2015-12-11 09:12:44 +01:00
Daniel Vetter
9953f41799 drm: Kerneldoc for drm_mode_config_funcs
The meat here is definitely the detailed specs for what atomic_check
and atomic_commit are supposed to do.

And another candidate for a core vfunc that should be in a helper really
(output_poll_changed this time around).

v2: Feedback from Eric on irc:
- spelling fixes.
- spec what async should do
- copy the event related paragraphs from page_flip and adjust
- make it clear that a successful async commit is not allowed to leave
  the pipe dead or disabled.

v3: Use FIXME comments to annotate functions that we should move to
some helpers.

v4: Suggestions from Thierry.

Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449218769-16577-22-git-send-email-daniel.vetter@ffwll.ch
Reviewed-by: Thierry Reding <treding@nvidia.com>
2015-12-08 16:13:53 +01:00
Daniel Vetter
c6b0ca3ea8 drm: Add kerneldoc for drm_framebuffer_funcs
While typing these I noticed that ->dirty is a bit a can of worms
and even supports blt/fill semantics ... shocked me a bit.

Oh well it's defined in a way that nothing bad (just a bit of inefficiency)
will happen for drivers which supports this. So I didn't bother copying
the detailed spec into the new kerneldoc.

v2: Suggestions from Thierry.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449218769-16577-21-git-send-email-daniel.vetter@ffwll.ch
Reviewed-by: Thierry Reding <treding@nvidia.com>
2015-12-08 16:13:52 +01:00
Daniel Vetter
f6da8c6e5e drm: document drm_crtc_funcs
And merge any docbook we have into the kerneldoc comments.

Since it's a legacy entry point with only two implementation (one each
in atomic and legacy crtc helpers) I've made the documentation for
set_config fairly sparse - no one should ever need to look at this
again, all the ABI we have is baked into code.

For ->page_flip otoh I kept all the extensive docs from the docbook
and even extended it where it was lacking: Currently we have a pile of
legacy page_flip implemantations, and even for atomic drivers there's
not yet a standard implementation in the helpers. Which means every
driver needs to implement this itself, and precise specs are really
valuable.

Otherwise there's just cursor, which really just boils down to "use at
least universal planes". And gamma tables (where we have a bit a mess
with the fbdev helper gamma hooks).

v2: Spelling fixes (Eric).

v3: Suggestions from Thierry.

Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449218769-16577-20-git-send-email-daniel.vetter@ffwll.ch
2015-12-08 16:13:52 +01:00
Daniel Vetter
6fe14acd49 drm: Document drm_connector_funcs
The special case here is that both ->detect and ->force are actually
functions only called by the probe helpers and hence really shouldn't
be here. But since they've used by pretty much every driver I figured
it's better to just document this for now instead of holding this doc
patch hostage until that's all fixed. For that reason also group force
right next to detect.

v2: Use FIXME comments to annotate where we should move a hook to
helpers.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449218769-16577-18-git-send-email-daniel.vetter@ffwll.ch
Reviewed-by: Thierry Reding <treding@nvidia.com>
2015-12-08 16:13:51 +01:00
Daniel Vetter
813b0f3e00 drm: Remove crtc/connector->save/restore hooks
They're not how system suspend/resume should be done with atomic
(there's new helpers for that developed by Thierry Reding), and for
legacy drivers this really should be a helper hook and not a core one.

But there's not even helper code to use them, and only 2 drivers
(which now have their own private hooks) set them. Ditch them.

Saves me typing some kerneldoc, too ;-)

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449218769-16577-15-git-send-email-daniel.vetter@ffwll.ch
Reviewed-by: Thierry Reding <treding@nvidia.com>
2015-12-08 16:13:49 +01:00
Daniel Vetter
8854863640 drm: Update drm_plane_funcs kerneldoc
- Merge the docbook into the kerneldoc comments.

- Spec in detail the precise semantics of the callbacks.

- For consistency in wording and easier review roll out kerneldoc also
  for crtc, encoder and connector for the standard hooks they share
  with planes.

v2: Suggestions from Thierry.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449218769-16577-8-git-send-email-daniel.vetter@ffwll.ch
Reviewed-by: Thierry Reding <treding@nvidia.com>
2015-12-08 16:07:53 +01:00
Daniel Vetter
da024fe586 drm/bridge: Improve kerneldoc
Especially document the assumptions and semantics of the callbacks
carefully. Just a warm-up excercise really.

v2: Spelling fixes (Eric).

v3: Consolidate more with existing docs:

- Remove the overview section explaining the bridge funcs, that's
  now all in the drm_bridge_funcs kerneldoc in much more detail.

- Use & to reference structs so that kerneldoc automatically inserts
  hyperlinks.

v4: Review from Thierry.

Cc: Eric Anholt <eric@anholt.net>
Cc: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Archit Taneja <architt@codeaurora.org> (v3)
Link: http://patchwork.freedesktop.org/patch/msgid/1449218769-16577-7-git-send-email-daniel.vetter@ffwll.ch
Reviewed-by: Thierry Reding <treding@nvidia.com>
2015-12-08 16:07:53 +01:00
Daniel Vetter
4490d4c711 drm: Make helper vtable pointers type-safe
Originally the idea behind void* was to allow different sets of
helpers. But now we have that (with probe, plane, crtc and atomic
helpers) and we still just use the same set of vtables. That's the
only way to make the individual helpers modular and allow drivers to
pick&choose and transition between them. So this flexibility isn't
really needed. Also we have lots of non-vtable data meanwhile in core
structures too, this is not the first one at all.

Given that the void * is only trouble since gcc can't warn you if you
mix them up. Let's fix that and make them typesafe.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449218769-16577-5-git-send-email-daniel.vetter@ffwll.ch
Reviewed-by: Thierry Reding <treding@nvidia.com>
2015-12-08 16:07:52 +01:00
Jani Nikula
373701b1fc drm: fix potential dangling else problems in for_each_ macros
We have serious dangling else bugs waiting to happen in our for_each_
style macros with ifs. Consider, for example,

 #define drm_for_each_plane_mask(plane, dev, plane_mask) \
         list_for_each_entry((plane), &(dev)->mode_config.plane_list, head) \
                 if ((plane_mask) & (1 << drm_plane_index(plane)))

If this is used in context:

	if (condition)
		drm_for_each_plane_mask(plane, dev, plane_mask);
	else
		foo();

foo() will be called for each plane *not* in plane_mask, if condition
holds, and not at all if condition doesn't hold.

Fix this by reversing the conditions in the macros, and adding an else
branch for the "for each" block, so that other if/else blocks can't
interfere. Provide a "for_each_if" helper macro to make it easier to get
this right.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448392916-2281-1-git-send-email-jani.nikula@intel.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-11-25 09:29:21 +01:00
Ville Syrjälä
1eb83451ba drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create()
Drivers shouldn't clobber the passed in addfb ioctl parameters.
i915 was doing just that. To prevent it from happening again,
pass the struct around as const, starting all the way from
internal_framebuffer_create().

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-11-24 11:47:38 +01:00
Robert Fekete
d9c3824217 drm: Describe the Rotation property bits.
Adds clarification of the rotation property bits. I.e. rotation is
counter clockwise and that reflects are applied before any rotation.

v2: Refer to the define names instead of the property values.

Signed-off-by: Robert Fekete <robert.fekete@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-11-24 11:41:53 +01:00
Ville Syrjälä
33e0be6375 drm: Check crtc viewport correctly with rotated primary plane on atomic drivers
On atomic drivers we can dig out the primary plane rotation from the
plane state instead of looking at the legacy crtc->invert_dimensions
flag. The flag is not set by anyone except omapdrm, and it would be
racy to set it the same way in the atomic helpers.

v2: Kill crtc->invert_dimensions totally since omap is state based
    already and no one else ever used it (Matt)

Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1445009919-22746-1-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-10-19 11:00:47 +02:00
Joonas Lahtinen
6220907089 drm: Add DRM_ROTATE_MASK and DRM_REFLECT_MASK
Makes it cleaner to separate the two from rotation variable.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-10-05 15:32:42 +02:00
Ville Syrjälä
eba1f35dfe drm: Move timestamping constants into drm_vblank_crtc
Collect the timestamping constants alongside the rest of the relevant
stuff under drm_vblank_crtc.

We can now get rid of the 'refcrtc' parameter to
drm_calc_vbltimestamp_from_scanoutpos().

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-09-24 20:14:20 +02:00
Geliang Tang
5e7d49446b drm: fix kernel-doc warnings in drm_crtc.h
Fix the following 'make htmldocs' warning:

  .//include/drm/drm_crtc.h:929: warning: Excess struct/union/enum/typedef member 'base' description in 'drm_bridge'

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-09-24 20:14:20 +02:00
Daniel Vetter
c86fb9d997 drm: Nuke drm_framebuffer->helper_private
It's completely unused and there's really no reason for this:
- drm_framebuffer structures are invariant after creation, no need for
  helpers to manipulate them.
- drm_framebuffer structures should just be embedded (and that's what
  all the drivers do).

Stumbled over this since some folks are apparently concerned with the
overhead of struct drm_framebuffer and this is an easy 8 byte saving.

More could be gained by ditching the legacy fields and recomputing
stuff from the fourcc value. But that would require some drm-wide
cocci and real justification.

Cc: gary.k.smith@intel.com
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-09-11 09:18:26 +02:00
Ville Syrjälä
b7c914b3d9 drm: Constify TV mode names
Make the mode names passed to drm_mode_create_tv_properties() const.

 drivers/gpu/drm/i2c/ch7006.ko:
-.rodata                       596
+.rodata                       664
-.data                        7064
+.data                        6992

 drivers/gpu/drm/nouveau/nouveau.ko:
-.rodata                      146808
+.rodata                      146904
-.data                        178624
+.data                        178528

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-09-08 13:45:52 +02:00
Dave Airlie
3732ce72b4 Linux 4.2-rc8
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJV2pUkAAoJEHm+PkMAQRiGCIoH/Rb29ZjdCoZJp9OtnjAG+qRc
 bG3YuomIdib86x7xHRKKaLWBa7din7IYjuwT/X4S4duO5a1R5Lp1sRG3IlGfhT0W
 nBNbjFl4q4bOyiTPtTRTYyh4g5UQv4IuyCnCmZyCTJyVi/O6HVM9TWKUzm68P2dJ
 30LwLUcQJ+mHueGJwFBAXe2BaojEpvYCdSX6tvbrQ/8X3FrVExZXuJl4uMYNFYNK
 ZwG/v5t7tYOiAe76JGbrEuVFPZWLPEW7amHOWR0T4Ye4nWTlBgx7fENiNRlfgcvI
 CM16l/xkyrZQ3Q5jZy1qYDfdHYF++dyEDysX4w1ae/X0aaLZn7l+u5VQD6WpkQQ=
 =IF6I
 -----END PGP SIGNATURE-----

Merge tag 'v4.2-rc8' into drm-next

Linux 4.2-rc8

Backmerge required for Intel so they can fix their -next tree up properly.
2015-08-24 16:36:42 +10:00
Thierry Reding
45e3743aff drm/plane: Use consistent data types for format count
Rather than a mix of the the sized uint32_t and signed integer, use an
unsized unsigned int to specify the format count.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-08-12 17:14:24 +02:00
Maarten Lankhorst
4772ff03df drm/dp/mst: Remove port after removing connector.
The port is removed synchronously, but the connector delayed.
This causes a use after free which can cause a kernel BUG with
slug_debug=FPZU. This is fixed by freeing the port after the
connector.

This fixes a regression introduced with
6b8eeca65b
"drm/dp/mst: close deadlock in connector destruction."

Cc: stable@vger.kernel.org
Cc: Dave Airlie <airlied@redhat.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-08-11 12:30:38 +03:00
Maarten Lankhorst
9a69a9ac20 drm: Make the connector dpms callback return a value, v2.
This is required to properly handle failing dpms calls.
When making a wait in i915 interruptible, I've noticed
that the dpms sequence could fail with -ERESTARTSYS because
it was waiting interruptibly for flips. So from now on
allow drivers to fail in their connector dpms callback.

Encoder and crtc dpms callbacks are unaffected.

Changes since v1:
- Update kerneldoc for the drm helper functions.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
[danvet: Resolve conflicts due to different merge order.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-07-27 16:23:28 +02:00
Maarten Lankhorst
fc596660dd drm/atomic: add connectors_changed to separate it from mode_changed, v2
This can be a separate case from mode_changed, when connectors stay the
same but only the mode is different. Drivers may choose to implement specific
optimizations to prevent a full modeset for this case.

Changes since v1:
- Update kerneldocs slightly.

Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-07-27 10:06:38 +02:00
Daniel Vetter
3fdefa399e drm: gc now dead mode_group code
Two nice things here:
- drm_dev_register will truly register everything in the right order
  if the driver doesn't have a ->load callback. Before this we had to
  init the primary mode_group after the device nodes where already
  registered.

- Less things to keep track of when reworking the connector locking,
  yay!

Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-07-22 17:29:38 +02:00
Daniel Vetter
cff20ba275 drm: Amend connector list locking rules
Now that dp mst hotplug takes all locks we can amend the locking rules
for the iterators. This is needed before we can roll these out in the
atomic code to avoid getting burried in WARNINGs.

v2: Rebase onto the extracted list locking assert and add a comment to
explain the rules.

v3: Fixup German->English translation fail in the comment.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-07-22 16:25:46 +02:00
Daniel Vetter
4676ba0be7 drm: Check locking in drm_for_each_fb
Ever since framebuffers are reference counted we have a special lock
for the global fb list. Make sure users of that list do hold that
lock when using the new iterators.

Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-07-22 16:25:46 +02:00
Daniel Vetter
7a3f3d6667 drm: Check locking in drm_for_each_connector
Because of DP MST connectors can now be hotplugged and we must hold
the right lock when walking the connector lists.  Enforce this by
checking the locking in our shiny new list walking macros.

v2: Extract the locking check into a small static inline helper to
help readability. This will be more important when we make the
read list access rules more complicated in later patches. Inspired by
comments from Chris. Unfortunately, due to header loops around the
definition of struct drm_device the function interface is a bit funny.

v3: Encoders aren't hotadded/removed. For each dp mst encoder we
statically create one fake encoder per pipe so that we can support as
many mst sinks as the hw can (Dave).

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dave Airlie <airlied@redhat.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-07-22 16:25:46 +02:00
Daniel Vetter
6295d607ad drm: Add modeset object iterators
And roll them out across drm_* files. The point here isn't code
prettification (it helps with that too) but that some of these lists
aren't static any more. And having macros will gives us a convenient
place to put locking checks into.

I didn't add an iterator for props since that's only used by a
list_for_each_entry_safe in the driver teardown code.

Search&replace was done with the below cocci spatch. Note that there's
a bunch more places that didn't match and which would need some manual
changes, but I've intentially left these out for this mostly automated
patch.

iterator name drm_for_each_crtc;
struct drm_crtc *crtc;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ drm_for_each_crtc (crtc, dev) {
...
}

@@
iterator name drm_for_each_encoder;
struct drm_encoder *encoder;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ drm_for_each_encoder (encoder, dev) {
...
}

@@
iterator name drm_for_each_fb;
struct drm_framebuffer *fb;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
+ drm_for_each_fb (fb, dev) {
...
}

@@
iterator name drm_for_each_connector;
struct drm_connector *connector;
struct drm_device *dev;
expression head;
@@
- list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ drm_for_each_connector (connector, dev) {
...
}

Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-07-22 16:25:45 +02:00
Daniel Vetter
4ea50e99bd drm: Simplify drm_for_each_legacy_plane arguments
No need to pass the planelist when everyone just uses
dev->mode_config.plane_list anyway.

I want to add a pile more of iterators with unified (obj, dev)
arguments. This is just prep.

Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-07-22 16:25:45 +02:00
Dave Airlie
6b8eeca65b drm/dp/mst: close deadlock in connector destruction.
I've only seen this once, and I failed to capture the
lockdep backtrace, but I did some investigations.

If we are calling into the MST layer from EDID probing,
we have the mode_config mutex held, if during that EDID
probing, the MST hub goes away, then we can get a deadlock
where the connector destruction function in the driver
tries to retake the mode config mutex.

This offloads connector destruction to a workqueue,
and avoid the subsequenct lock ordering issue.

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-06-25 11:57:23 +10:00
Daniel Stone
955f3c334f drm/atomic: Add MODE_ID property
Atomic modesetting: now with modesetting support.

v2: Moved drm_atomic_set_mode_prop_for_crtc from previous patch; removed
    state->active fiddling, documented return code. Changed property
    type to DRM_MODE_PROP_BLOB.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Tested-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-05-26 15:50:42 +02:00
Daniel Stone
99cf4a29fa drm/atomic: Add current-mode blob to CRTC state
Add a blob property tracking the current mode to the CRTC state, and
ensure it is properly updated and referenced.

v2: Continue using crtc_state->mode inside getcrtc, instead of reading
    out the mode blob. Use IS_ERR and PTR_ERR from create_blob. Move
    set_mode_prop_for_crtc to later patch where it actually gets used.
    Enforce !!state->enable == !!state->mode_blob inside
    drm_atomic_crtc_check.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Tested-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-05-26 15:50:38 +02:00
Daniel Stone
e2f5d2ea47 drm/mode: Add user blob-creation ioctl
Add an ioctl which allows users to create blob properties from supplied
data. Currently this only supports modes, creating a drm_display_mode from
the userspace drm_mode_modeinfo.

v2: Removed size/type checks.
    Rebased on new patches to allow error propagation from create_blob,
    as well as avoiding double-allocation.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@intel.com>
Tested-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-05-22 16:18:28 +02:00
Archit Taneja
862e686ce4 drm: bridge: Allow daisy chaining of bridges
Allow drm_bridge objects to link to each other in order to form an encoder
chain. The requirement for creating a chain of bridges comes because the
MSM drm driver uses up its encoder and bridge objects for blocks within
the SoC itself. There isn't anything left to use if the SoC display output
is connected to an external encoder IC. Having an additional bridge
connected to the existing bridge helps here. In general, it is possible for
platforms to have  multiple devices between the encoder and the
connector/panel that require some sort of configuration.

We create drm bridge helper functions corresponding to each op in
'drm_bridge_funcs'. These helpers call the corresponding
'drm_bridge_funcs' op for the entire chain of bridges. These helpers are
used internally by drm_atomic_helper.c and drm_crtc_helper.c.

The drm_bridge_enable/pre_enable helpers execute enable/pre_enable ops of
the bridge closet to the encoder, and proceed until the last bridge in the
chain is enabled. The same holds for drm_bridge_mode_set/mode_fixup
helpers. The drm_bridge_disable/post_disable helpers disable the last
bridge in the chain first, and proceed until the first bridge in the chain
is disabled.

drm_bridge_attach() remains the same. As before, the driver calling this
function should make sure it has set the links correctly. The order in
which the bridges are connected to each other determines the order in which
the calls are made. One requirement is that every bridge in the chain
should point the parent encoder object. This is required since bridge
drivers expect a valid encoder pointer in drm_bridge. For example, consider
a chain where an encoder's output is connected to bridge1, and bridge1's
output is connected to bridge2:

	/* Like before, attach bridge to an encoder */
	bridge1->encoder = encoder;
	ret = drm_bridge_attach(dev, bridge1);
	..

	/*
	 * set the first bridge's 'next' bridge to bridge2, set its encoder
	 * as bridge1's encoder
	 */
	bridge1->next = bridge2
	bridge2->encoder = bridge1->encoder;
	ret = drm_bridge_attach(dev, bridge2);

	...
	...

This method of bridge chaining isn't intrusive and existing drivers that
use drm_bridge will behave the same way as before. The bridge helpers also
cleans up the atomic and crtc helper files a bit.

Reviewed-by: Jani Nikula <jani.nikula@linux.intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-05-21 13:55:42 +02:00
Dave Airlie
9c37bf2db0 Merge tag 'topic/drm-misc-2015-05-19' of git://anongit.freedesktop.org/drm-intel into drm-next
Scattering of random drm core patches. Bunch of atomic prep work too, but
the final bits for blob properties, atomic modesets and lifting the
experimental tag on the atomic ioctl are still blocked on Daniel Stone
finalizing and testing the weston support for it. I hope that we can get
it all ready for 4.2 though.

* tag 'topic/drm-misc-2015-05-19' of git://anongit.freedesktop.org/drm-intel: (22 commits)
  drm/atomic: Allow drivers to subclass drm_atomic_state, v3
  drm/atomic: remove duplicated assignment of old_plane_state
  drm/dp: Fix comment in DP helper
  drm/atomic: add drm_atomic_get_existing_*_state helpers
  drm/core: get rid of -Iinclude/drm
  drm/i915: get rid of -Iinclude/drm
  drm/atomic-helpers: Export drm_atomic_helper_update_legacy_modeset_state
  drm/atomic-helpers: Update vblank timestamping constants
  drm/sysfs: remove unnecessary connector type checks
  drm/sysfs: split DVI-I and TV-out attributes
  drm/sysfs: make optional attribute groups per connector type
  drm/sysfs: add a helper for extracting connector type from kobject
  drm/edid: Add CEA modes before inferred modes
  drm/prime: Allow internal imports without import_sg_table
  drm: Add reference counting to blob properties
  drm: Introduce blob_lock
  drm: Introduce helper for replacing blob properties
  drm: Don't leak path blob property when updating
  drm/atomic: Don't open-code CRTC state destroy
  drm/edid: Add DMT modes with ID > 0x50
  ...
2015-05-20 09:19:58 +10:00
Maarten Lankhorst
036ef5733b drm/atomic: Allow drivers to subclass drm_atomic_state, v3
Drivers may need to store the state of shared resources, such as PLLs
or FIFO space, into the atomic state. Allow this by making it possible
to subclass drm_atomic_state.

Changes since v1:
- Change member names for functions to atomic_state_(alloc,clear)
- Change __drm_atomic_state_new to drm_atomic_state_init
- Allow free function to be overridden too, in case extra memory is
  allocated in alloc.
Changes since v2:
- Rename *_default_free to default_release, to make clear it doesn't
  free the state object itself.

Cc: dri-devel@lists.freedesktop.org
Acked-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-05-18 16:39:41 +02:00
Daniel Stone
6bcacf51d0 drm: Add reference counting to blob properties
Reference-count drm_property_blob objects, changing the API to
ref/unref.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
[danvet: Squash in kerneldoc fixup from Daniel Stone.]
[danvet: Squash in Oops fix from Thiery Reding.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-05-12 11:02:31 +02:00
Daniel Vetter
ac6f2e29bb drm/edid: Kerneldoc for newly added edid_corrupt
Also treat it as a proper boolean.

Cc: Todd Previte <tprevite@gmail.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-05-08 17:26:01 +02:00
Daniel Stone
8fb6e7a579 drm: Introduce blob_lock
Create a new global blob_lock mutex, which protects the blob property
list from insertion and/or deletion.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-05-08 13:30:01 +02:00
Todd Previte
6ba2bd3da7 drm: Add edid_corrupt flag for Displayport Link CTS 4.2.2.6
Displayport compliance test 4.2.2.6 requires that a source device be capable of
detecting a corrupt EDID. The test specification states that the sink device
sets up the EDID with an invalid checksum. To do this, the sink sets up an
invalid EDID header, expecting the source device to generate the checksum and
compare it to the value stored in the last byte of the block data.

Unfortunately, the DRM EDID reading and parsing functions are actually too good
in this case; the header is fixed before the checksum is computed and thus the
test never sees the invalid checksum. This results in a failure to pass the
compliance test.

To correct this issue, when the EDID code detects that the header is invalid,
a flag is set to indicate that the EDID is corrupted. In this case, it sets
edid_corrupt flag and continues with its fix-up code. This flag is also set in
the case of a more seriously damaged header (fixup score less than the
threshold). For consistency, the edid_corrupt flag is also set when the
checksum is invalid as well.

V2:
- Removed the static bool global
- Added a bool to the drm_connector struct to reaplce the static one for
  holding the status of raw edid header corruption detection
- Modified the function signature of the is_valid function to take an
  additional parameter to store the corruption detected value
- Fixed the other callers of the above is_valid function
V3:
- Updated the commit message to be more clear about what and why this
  patch does what it does.
- Added comment in code to clarify the operations there
- Removed compliance variable and check_link_status update; those
  have been moved to a later patch
- Removed variable assignment from the bottom of the test handler
V4:
- Removed i915 tag from subject line as the patch is not i915-specific
V5:
- Moved code causing a compilation error to this patch where the variable
  is actually declared
- Maintained blank lines / spacing so as to not contaminate the patch
V6:
- Removed extra debug messages
- Added documentation to for the added parameter on drm_edid_block_valid
- Fixed more whitespace issues in check_link_status
- Added a clear of the header_corrupt flag to the end of the test handler
  in intel_dp.c
- Changed the usage of the new function prototype in several places to use
  NULL where it is not needed by compliance testing
V7:
- Updated to account for long_pulse flag propagation
V8:
- Removed clearing of header_corrupt flag from the test handler in intel_dp.c
- Added clearing of header_corrupt flag in the drm_edid_block_valid function
V9:
- Renamed header_corrupt flag to edid_corrupt to more accurately reflect its
  value and purpose
- Updated commit message
V10:
- Updated for versioning and patch swizzle
- Revised the title to more accurately reflect the nature and contents of
  the patch
- Fixed formatting/whitespace problems
- Added set flag when computed checksum is invalid

Signed-off-by: Todd Previte <tprevite@gmail.com>
Cc: dri-devel@lists.freedesktop.org
Acked-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-05-08 13:03:46 +02:00
Dave Airlie
e1dee1973c Merge tag 'drm-intel-next-2015-04-23-fixed' of git://anongit.freedesktop.org/drm-intel into drm-next
drm-intel-next-2015-04-23:
- dither support for ns2501 dvo (Thomas Richter)
- some polish for the gtt code and fixes to finally enable the cmd parser on hsw
- first pile of bxt stage 1 enabling (too many different people to list ...)
- more psr fixes from Rodrigo
- skl rotation support from Chandra
- more atomic work from Ander and Matt
- pile of cleanups and micro-ops for execlist from Chris
drm-intel-next-2015-04-10:
- cdclk handling cleanup and fixes from Ville
- more prep patches for olr removal from John Harrison
- gmbus pin naming rework from Jani (prep for bxt)
- remove ->new_config from Ander (more atomic conversion work)
- rps (boost) tuning and unification with byt/bsw from Chris
- cmd parser batch bool tuning from Chris
- gen8 dynamic pte allocation (Michel Thierry, based on work from Ben Widawsky)
- execlist tuning (not yet all of it) from Chris
- add drm_plane_from_index (Chandra)
- various small things all over

* tag 'drm-intel-next-2015-04-23-fixed' of git://anongit.freedesktop.org/drm-intel: (204 commits)
  drm/i915/gtt: Allocate va range only if vma is not bound
  drm/i915: Enable cmd parser to do secure batch promotion for aliasing ppgtt
  drm/i915: fix intel_prepare_ddi
  drm/i915: factor out ddi_get_encoder_port
  drm/i915/hdmi: check port in ibx_infoframe_enabled
  drm/i915/hdmi: fix vlv infoframe port check
  drm/i915: Silence compiler warning in dvo
  drm/i915: Update DRIVER_DATE to 20150423
  drm/i915: Enable dithering on NatSemi DVO2501 for Fujitsu S6010
  rm/i915: Move i915_get_ggtt_vma_pages into ggtt_bind_vma
  drm/i915: Don't try to outsmart gcc in i915_gem_gtt.c
  drm/i915: Unduplicate i915_ggtt_unbind/bind_vma
  drm/i915: Move ppgtt_bind/unbind around
  drm/i915: move i915_gem_restore_gtt_mappings around
  drm/i915: Fix up the vma aliasing ppgtt binding
  drm/i915: Remove misleading comment around bind_to_vm
  drm/i915: Don't use atomics for pg_dirty_rings
  drm/i915: Don't look at pg_dirty_rings for aliasing ppgtt
  drm/i915/skl: Support Y tiling in MMIO flips
  drm/i915: Fixup kerneldoc for struct intel_context
  ...

Conflicts:
	drivers/gpu/drm/i915/i915_drv.c
2015-05-08 20:51:06 +10:00
Dave Airlie
4a11248856 Merge tag 'topic/drm-misc-2015-04-15' of git://anongit.freedesktop.org/drm-intel into drm-next
One more drm-misch pull for 4.1 with mostly simple stuff and boring
refactoring. Even the cursor fix from Matt is just to make a really anal
igt happy.

* tag 'topic/drm-misc-2015-04-15' of git://anongit.freedesktop.org/drm-intel:
  drm: fix trivial typo mistake
  drm: Make integer overflow checking cover universal cursor updates (v2)
  drm: make crtc/encoder/connector/plane helper_private a const pointer
  drm/armada: constify struct drm_encoder_helper_funcs pointer
  drm/radeon: constify more struct drm_*_helper funcs pointers
  drm/edid: add #defines for ELD versions
  drm/atomic: Add for_each_{connector,crtc,plane}_in_state helper macros
  drm: Use kref_put_mutex in drm_gem_object_unreference_unlocked
  drm/drm: constify all struct drm_*_helper funcs pointers
  drm/qxl: constify all struct drm_*_helper funcs pointers
  drm/nouveau: constify all struct drm_*_helper funcs pointers
  drm/radeon: constify all struct drm_*_helper funcs pointers
  drm/gma500: constify all struct drm_*_helper funcs pointers
  drm/mgag200: constify all struct drm_*_helper funcs pointers
  drm/exynos: constify all struct drm_*_helper funcs pointers
  drm: Fix some typos
2015-04-16 08:34:24 +10:00
Daniel Vetter
c5fe557dde Merge branch 'topic/bxt-stage1' into drm-intel-next-queued
Separate topic branch for bxt didn't work out since we needed to
refactor the gmbus code a bit to make it look decent. So backmerge.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-04-14 14:00:56 +02:00
John Hunter
2b1193d528 drm: fix trivial typo mistake
Signed-off-by: John Hunter <zhjwpku@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-04-14 12:41:03 +02:00
Jani Nikula
9a436ee6c3 drm: make crtc/encoder/connector/plane helper_private a const pointer
They're only used to store const pointers anyway. This helps to keep
Ville and the compiler happy.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-04-13 15:00:13 +02:00
Chandra Konduru
f81338a52a drm: Adding drm helper function drm_plane_from_index().
Adding drm helper function to return plane pointer from index where
index is a returned by drm_plane_index.

v2:
-avoided nested loop by adding loop count (Daniel)

v3:
-updated patch header prefix to 'drm' (Matt)

v4:
-fixed a kerneldoc issue (kbuild-internal)

Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Chandra Konduru <chandra.konduru@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-04-10 08:56:21 +02:00
Dave Airlie
a08aad54be drm/panel: Changes for v4.1-rc1
This set of changes adds support for a whole bunch of new panels, mostly
 simple ones. There's now also support for panels to provide display
 timings rather than fixed modes, which should allow panels to work with
 a larger number of display drivers. Eventually drivers should migrate to
 this new interface and the fixed modes removed from panels.
 
 There are also a couple of sparse fixes for the PS8622 and PS8625 bridge
 drivers.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABCAAGBQJVHXdzAAoJEN0jrNd/PrOhWKgQAJGdicIa3B8CLohgAfyMI+in
 1PxO2vBGgz7T02iFTOzwh5cvh8E7mog9/R5jVCyan22BHdws75FgL6RVMcqbllds
 c2ejPHhHlBEzOBtbZeEmvg1twmqKY5ejk1X7rtVHNCNaXVzSlpxYJF2jfK8DmhRF
 l7UmjKIpyeDSL+33t+Q0jZynU2mwLfstr/4lwMPPKU6kzz15lIo0gPAnOlagbGD3
 L5GOm1+LaDXpxojDtIElzzhzDf1DhmD4nIA3KRGAmKHRxA1u/vZUsW5UNaCvJB0v
 eMVFdIk/aFfw4jizlAEute4sMKcXWNBMHmEr7e8Bakr+clie7BcXN9zeZ+B99t7A
 +pkRbWNN8Isr4FpGNVz0XdU2BzmJAaQ59ghmZ5ZJtOmZwMWJbJsG7vMw0p2+68w6
 bxhrEoT7hQDUicoKhcM6/8jDCqLZdqN0co16NHIL+0/BiUuS9Q1qr3Y7dBFbiU6D
 iNKKeniODw8lA+Jv7wxVGbS2f5RvFeLvhgi4MgF78bEj8Mxf2EpB+mJT6WtEcX37
 OMcg7xN7C6q2cu4Cpj7txF3gnKwB56lkJsX7xnyajtdHLDcw8Vx4CZprZCyA5gWP
 FWpDLkT7l3Fi3jRDoVBw3WRa+rIfSFvLuVf3iLyVuFE5vR0tqJKutYDeaez0cMQM
 nQqS1f2MYsKmNJf2DFhx
 =0aBn
 -----END PGP SIGNATURE-----

Merge tag 'drm/panel/for-4.1-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

drm/panel: Changes for v4.1-rc1

This set of changes adds support for a whole bunch of new panels, mostly
simple ones. There's now also support for panels to provide display
timings rather than fixed modes, which should allow panels to work with
a larger number of display drivers. Eventually drivers should migrate to
this new interface and the fixed modes removed from panels.

There are also a couple of sparse fixes for the PS8622 and PS8625 bridge
drivers.

* tag 'drm/panel/for-4.1-rc1' of git://anongit.freedesktop.org/tegra/linux:
  drm/panel: Add support for Ampire AM-800480R3TMQW-A1H 800x480 7" panel
  of: Add vendor prefix for Ampire Co., Ltd.
  drm/panel: Add display timing for HannStar HSD070PWW1
  drm/panel: simple: Add display timing support
  drm/panel: Add display timing support
  drm/panel: Add support for OrtusTech COM43H4M85ULC panel
  of: Add vendor prefix for Ortus Technology Co., Ltd.
  drm/panel: Add bus format for Giantplus GPG482739QS5 panel
  drm/panel: simple: Add support for AUO b101ean01 panel
  drm/panel: simple: Add support for Innolux ZJ070NA-01P
  drm/panel: simple: Add support for Innolux AT043TN24
  drm/panel: simple: Add support for Shelly SCA07010-BFN-LNN
  drm/panel: simple: Add support for Samsung LTN140AT29 panel
  drm: Remove unused DRM_MODE_OBJECT_BRIDGE
  drm/bridge: ptn3460: Fix sparse warnings
  drm/bridge: ps8622: Fix sparse warnings
  drm/bridge: Add I2C based driver for ps8622/ps8625 bridge
2015-04-08 11:14:10 +10:00
Thierry Reding
6321fd6b6f drm: Remove unused DRM_MODE_OBJECT_BRIDGE
With bridges now moving to a separate registry they are no longer DRM
objects, hence this define is no longer needed.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-03-24 11:16:48 +01:00
Rob Clark
08855fae10 drm/atomic: minor kerneldoc typo fix
Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-03-11 22:07:39 +01:00
Laurent Pinchart
7eb5f302bb drm: Check in setcrtc if the primary plane supports the fb pixel format
Drivers implementing the universal planes API report the list of
supported pixel formats for the primary plane. Make sure the fb passed
to the setcrtc ioctl is compatible.

Drivers not implementing the universal planes API will have no format
reported for the primary plane, skip the check in that case.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-03-10 09:59:36 +01:00
Laurent Pinchart
ead8610d42 drm: Share plane pixel format check code between legacy and atomic
Both the legacy and atomic helpers need to check whether a plane
supports a given pixel format. The code is currently duplicated, share
it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[danvet: Slightly extend the docbook.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-03-10 09:59:35 +01:00
Dave Airlie
7547af9186 Merge tag 'drm-intel-next-2015-02-14' of git://anongit.freedesktop.org/drm-intel into drm-next
- use the atomic helpers for plane_upate/disable hooks (Matt Roper)
- refactor the initial plane config code (Damien)
- ppgtt prep patches for dynamic pagetable alloc (Ben Widawsky, reworked and
  rebased by a lot of other people)
- framebuffer modifier support from Tvrtko Ursulin, drm core code from Rob Clark
- piles of workaround patches for skl from Damien and Nick Hoath
- vGPU support for xengt on the client side (Yu Zhang)
- and the usual smaller things all over

* tag 'drm-intel-next-2015-02-14' of git://anongit.freedesktop.org/drm-intel: (88 commits)
  drm/i915: Update DRIVER_DATE to 20150214
  drm/i915: Remove references to previously removed UMS config option
  drm/i915/skl: Use a LRI for WaDisableDgMirrorFixInHalfSliceChicken5
  drm/i915/skl: Fix always true comparison in a revision id check
  drm/i915/skl: Implement WaEnableLbsSlaRetryTimerDecrement
  drm/i915/skl: Implement WaSetDisablePixMaskCammingAndRhwoInCommonSliceChicken
  drm/i915: Add process identifier to requests
  drm/i915/skl: Implement WaBarrierPerformanceFixDisable
  drm/i915/skl: Implement WaCcsTlbPrefetchDisable:skl
  drm/i915/skl: Implement WaDisableChickenBitTSGBarrierAckForFFSliceCS
  drm/i915/skl: Implement WaDisableHDCInvalidation
  drm/i915/skl: Implement WaDisableLSQCROPERFforOCL
  drm/i915/skl: Implement WaDisablePartialResolveInVc
  drm/i915/skl: Introduce a SKL specific init_workarounds()
  drm/i915/skl: Document that we implement WaRsClearFWBitsAtReset
  drm/i915/skl: Implement WaSetGAPSunitClckGateDisable
  drm/i915/skl: Make the init clock gating function skylake specific
  drm/i915/skl: Provide a gen9 specific init_render_ring()
  drm/i915/skl: Document the WM read latency W/A with its name
  drm/i915/skl: Also detect eDRAM on SKL
  ...
2015-03-05 09:41:09 +10:00
Rob Clark
e3eb3250d8 drm: add support for tiled/compressed/etc modifier in addfb2
In DRM/KMS we are lacking a good way to deal with tiled/compressed
formats.  Especially in the case of dmabuf/prime buffer sharing, where
we cannot always rely on under-the-hood flags passed to driver specific
gem-create ioctl to pass around these extra flags.

The proposal is to add a per-plane format modifier.  This allows to, if
necessary, use different tiling patters for sub-sampled planes, etc.
The format modifiers are added at the end of the ioctl struct, so for
legacy userspace it will be zero padded.

v1: original
v1.5: increase modifier to 64b

v2: Incorporate review comments from the big thread, plus a few more.

- Add a getcap so that userspace doesn't have to jump through hoops.
- Allow modifiers only when a flag is set. That way drivers know when
  they're dealing with old userspace and need to fish out e.g. tiling
  from other information.
- After rolling out checks for ->modifier to all drivers I've decided
  that this is way too fragile and needs an explicit opt-in flag. So
  do that instead.
- Add a define (just for documentation really) for the "NONE"
  modifier. Imo we don't need to add mask #defines since drivers
  really should only do exact matches against values defined with
  fourcc_mod_code.
- Drop the Samsung tiling modifier on Rob's request since he's not yet
  sure whether that one is accurate.

v3:
- Also add a new ->modifier[] array to struct drm_framebuffer and fill
  it in drm_helper_mode_fill_fb_struct. Requested by Tvrkto Uruslin.
- Remove TODO in comment and add code comment that modifiers should be
  properly documented, requested by Rob.

Cc: Rob Clark <robdclark@gmail.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Daniel Stone <daniel@fooishbar.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Michel Dänzer <michel@daenzer.net>
Signed-off-by: Rob Clark <robdclark@gmail.com> (v1.5)
Reviewed-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-02-13 23:28:12 +01:00
Ajay Kumar
3d3f8b1f8b drm/bridge: make bridge registration independent of drm flow
Currently, third party bridge drivers(ptn3460) are dependent
on the corresponding encoder driver init, since bridge driver
needs a drm_device pointer to finish drm initializations.
The encoder driver passes the drm_device pointer to the
bridge driver. Because of this dependency, third party drivers
like ptn3460 doesn't adhere to the driver model.

In this patch, we reframe the bridge registration framework
so that bridge initialization is split into 2 steps, and
bridge registration happens independent of drm flow:
--Step 1: gather all the bridge settings independent of drm and
	  add the bridge onto a global list of bridges.
--Step 2: when the encoder driver is probed, call drm_bridge_attach
	  for the corresponding bridge so that the bridge receives
	  drm_device pointer and continues with connector and other
	  drm initializations.

The old set of bridge helpers are removed, and a set of new helpers
are added to accomplish the 2 step initialization.

The bridge devices register themselves onto global list of bridges
when they get probed by calling "drm_bridge_add".

The parent encoder driver waits till the bridge is available
in the lookup table(by calling "of_drm_find_bridge") and then
continues with its initialization.

The encoder driver should also call "drm_bridge_attach" to pass
on the drm_device to the bridge object.

drm_bridge_attach inturn calls "bridge->funcs->attach" so that
bridge can continue with drm related initializations.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Tested-by: Rahul Sharma <rahul.sharma@samsung.com>
Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Tested-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Tested-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-01-28 08:45:40 +01:00
Ajay Kumar
b07b90fd17 drm/bridge: do not pass drm_bridge_funcs to drm_bridge_init
Assign the pointer to bridge ops structure(drm_bridge_funcs) in
the bridge driver itself, instead of passing it to drm_bridge_init.

This will allow bridge driver developer to pack bridge private
information inside the bridge object and pass only the drm-relevant
information to drm_bridge_init.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Tested-by: Rahul Sharma <rahul.sharma@samsung.com>
Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Tested-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Tested-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-01-28 08:45:40 +01:00
Dave Airlie
21773f16f2 Merge tag 'topic/atomic-core-2015-01-27' of git://anongit.freedesktop.org/drm-intel into drm-next
* tag 'topic/atomic-core-2015-01-27' of git://anongit.freedesktop.org/drm-intel:
  drm/atomic: Fix potential use of state after free
  drm/atomic-helper: debug output for modesets
  drm/atomic-helpers: Saner encoder/crtc callbacks
  drm/atomic-helpers: Recover full cursor plane behaviour
  drm/atomic-helper: add connector->dpms() implementation
  drm/atomic: Add drm_crtc_state->active
  drm: Add standardized boolean props
  drm/plane-helper: Fix transitional helper kerneldocs
  drm/plane-helper: Skip prepare_fb/cleanup_fb when newfb==oldfb

Conflicts:
	include/drm/drm_crtc_helper.h
2015-01-28 09:34:27 +10:00
Daniel Vetter
f02ad907cd drm/atomic-helpers: Recover full cursor plane behaviour
Cursor plane updates have historically been fully async and mutliple
updates batched together for the next vsync. And userspace relies upon
that. Since implementing a full queue of async atomic updates is a bit
of work lets just recover the cursor specific behaviour with a hint
flag and some hacks to drop the vblank wait.

v2: Fix kerneldoc, reported by Wu Fengguang.

Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-01-27 10:02:37 +01:00
Daniel Vetter
eab3bbeffd drm/atomic: Add drm_crtc_state->active
This is the infrastructure for DPMS ported to the atomic world.
Fundamental changes compare to legacy DPMS are:

- No more per-connector dpms state, instead there's just one per each
  display pipeline. So if you clone either you have to unclone first
  if you only want to switch off one screen, or you just switch of
  everything (like all desktops do). This massively reduces complexity
  for cloning since now there's no more half-enabled cloned configs to
  consider.

- Only on/off, dpms standby/suspend are as dead as real CRTs. Again
  reduces complexity a lot.

Now especially for backwards compat the really important part for dpms
support is that dpms on always succeeds (except for hw death and
unplugged cables ofc). Which means everything that could fail (like
configuration checking, resources assignments and buffer management)
must be done irrespective from ->active. ->active is really only a
toggle to change the hardware state. More precisely:

- Drivers MUST NOT look at ->active in their ->atomic_check callbacks.
  Changes to ->active MUST always suceed if nothing else changes.

- Drivers using the atomic helpers MUST NOT look at ->active anywhere,
  period. The helpers will take care of calling the respective
  enable/modeset/disable hooks as necessary. As before the helpers
  will carefully keep track of the state and not call any hooks
  unecessarily, so still no double-disables or enables like with crtc
  helpers.

- ->mode_set hooks are only called when the mode or output
  configuration changes, not for changes in ->active state.

- Drivers which reconstruct the state objects in their ->reset hooks
  or through some other hw state readout infrastructure must ensure
  that ->active reflects actual hw state.

This just implements the core bits and helper logic, a subsequent
patch will implement the helper code to implement legacy dpms with
this.

v2: Rebase on top of the drm ioctl work:
- Move crtc checks to the core check function.
- Also check for ->active_changed when deciding whether a modeset
  might happen (for the ALLOW_MODESET mode).
- Expose the ->active state with an atomic prop.

v3: Review from Rob
- Spelling fix in comment.
- Extract needs_modeset helper to consolidate the ->mode_changed ||
  ->active_changed checks.

v4: Fixup fumble between crtc->state and crtc_state.

Cc: Rob Clark <robdclark@gmail.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-01-27 10:02:18 +01:00
Daniel Vetter
960cd9d4fe drm: Add standardized boolean props
Not a new type exposed to userspace, just a standard way to create
them since between range, bitmask and enum there's 3 different ways to
pull out a boolean prop.

Also add the kerneldoc for the recently added new prop types, which
Rob forgot all about.

v2: Fixup kerneldoc, spotted by Rob.

Cc: Rob Clark <robdclark@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-01-27 10:02:12 +01:00
Matt Roper
1da30627fc drm: Add rotation value to plane state
The rotation property is shared by multiple drivers, so it makes sense
to store the rotation value (for atomic-converted drivers) in the common
plane state so that core code can eventually access it as well.

Cc: dri-devel@lists.freedesktop.org
Suggested-by: Daniel Vetter <daniel@ffwll.ch>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-01-27 18:48:53 +10:00
Dave Airlie
e4514003c6 Merge tag 'topic/core-stuff-2015-01-23' of git://anongit.freedesktop.org/drm-intel into drm-next
Just flushing out my drm-misc branch, nothing major. Well too old patches
I've dug out from years since a patch from Rob look eerily familiar ;-)

* tag 'topic/core-stuff-2015-01-23' of git://anongit.freedesktop.org/drm-intel:
  drm/probe-helper: clamp unknown connector status in the poll work
  drm/probe-helper: don't lose hotplug event
  next: drm/atomic: Use copy_from_user to copy 64 bit data from user space
  drm: Make drm_read() more robust against multithreaded races
  drm/fb-helper: Propagate errors from initial config failure
  drm: Drop superfluous "select VT_HW_CONSOLE_BINDING"
2015-01-27 08:54:11 +10:00
Daniel Vetter
162b6a57ac drm/probe-helper: don't lose hotplug event
There's a race window (small for hpd, 10s large for polled outputs)
where userspace could sneak in with an unrelated connnector probe
ioctl call and eat the hotplug event (since neither the hpd nor the
poll code see a state change).

To avoid this, check whether the connector state changes in all other
->detect calls (in the current helper code that's only probe_single)
and if that's the case, fire off a hotplug event. Note that we can't
directly call the hotplug event handler, since that expects that no
locks are held (due to reentrancy with the fb code to update the kms
console).

Also, this requires that drivers using the probe_single helper
function set up the poll work. All current drivers do that already,
and with the reworked hpd handling there'll be no downside to
unconditionally setting up the poll work any more.

v2: Review from Rob Clark
- Don't bail out of the output poll work immediately if it's disabled
  to make sure we deliver the delayed hoptplug events. Instead just
  jump to the tail.
- Don't scheduel the work when it's not set up. Would be a driver bug
  since using probe helpers for anything dynamic without them
  initialized makes them all noops.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (v1)
Cc: Rob Clark <robdclark@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Tested-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-22 06:11:23 +01:00
Boris Brezillon
b5571e9df6 drm: add bus_formats and num_bus_formats fields to drm_display_info
Add bus_formats and num_bus_formats fields and
drm_display_info_set_bus_formats helper function to specify the bus
formats supported by a given display.

This information can be used by display controller drivers to configure
the output interface appropriately (i.e. RGB565, RGB666 or RGB888 on raw
RGB or LVDS busses).

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Thierry Reding <treding@nvidia.com>
2015-01-21 09:45:34 +01:00
Dave Airlie
adc31849b2 Merge tag 'drm-intel-next-2014-12-19' of git://anongit.freedesktop.org/drm-intel into drm-next
- plane handling refactoring from Matt Roper and Gustavo Padovan in prep for
  atomic updates
- fixes and more patches for the seqno to request transformation from John
- docbook for fbc from Rodrigo
- prep work for dual-link dsi from Gaurav Signh
- crc fixes from Ville
- special ggtt views infrastructure from Tvrtko Ursulin
- shadow patch copying for the cmd parser from Brad Volkin
- execlist and full ppgtt by default on gen8, for testing for now

* tag 'drm-intel-next-2014-12-19' of git://anongit.freedesktop.org/drm-intel: (131 commits)
  drm/i915: Update DRIVER_DATE to 20141219
  drm/i915: Hold runtime PM during plane commit
  drm/i915: Organize bind_vma funcs
  drm/i915: Organize INSTDONE report for future.
  drm/i915: Organize PDP regs report for future.
  drm/i915: Organize PPGTT init
  drm/i915: Organize Fence registers for future enablement.
  drm/i915: tame the chattermouth (v2)
  drm/i915: Warn about missing context state workarounds only once
  drm/i915: Use true PPGTT in Gen8+ when execlists are enabled
  drm/i915: Skip gunit save/restore for cherryview
  drm/i915/chv: Use timeout mode for RC6 on chv
  drm/i915: Add GPGPU_THREADS_DISPATCHED to the register whitelist
  drm/i915: Tidy up execbuffer command parsing code
  drm/i915: Mark shadow batch buffers as purgeable
  drm/i915: Use batch length instead of object size in command parser
  drm/i915: Use batch pools with the command parser
  drm/i915: Implement a framework for batch buffer pools
  drm/i915: fix use after free during eDP encoder destroying
  drm/i915/skl: Skylake also supports DP MST
  ...
2015-01-10 08:46:24 +10:00
Dave Airlie
c93546a5e3 Merge tag 'topic/atomic-core-2015-01-05' of git://anongit.freedesktop.org/drm-intel into drm-next
Next batch of atomic work. Most important is the propertification from Rob
and the nth iteration of the actual atomic ioctl originally from Ville.
Big differences compared to earlier revisions:
- Core properties are now fully handled by the core, drivers can only
  handle driver-specific properties.
- Atomic props&ioctl are opt-in per file_priv, userspace needs to
  explicitly ask for it (like universal plane support).
- For now all hidden behind the atomic module option until this has
  settled a bit.
- Atomic modesets are currently not possible since the exact abi for how
  to handle the mode property is still under discussion.

Besides this some cleanup patches from me and the addition of per-object
state to global state backpointers to simplify drivers.

* tag 'topic/atomic-core-2015-01-05' of git://anongit.freedesktop.org/drm-intel:
  drm: Ensure universal_planes is set for atomic
  drm/atomic: Hide drm.ko internal interfaces
  drm: Atomic modeset ioctl
  drm/atomic: atomic connector properties
  drm/atomic: atomic plane properties
  drm: small property creation cleanup
  drm/atomic: atomic_check functions
  drm: add atomic properties
  drm: refactor getproperties/getconnector
  drm: tweak getconnector locking
  drm: add atomic_get_property
  drm: add atomic_set_property wrappers
  drm: get rid of direct property value access
  drm: store property instead of id in obj attachment
  drm: allow property validation for refcnted props
  drm/atomic: Introduce state->obj backpointers
  drm/atomic-helper: Again check modeset *before* plane states
  drm/atomic-helper: Export both plane and modeset check helpers
2015-01-09 09:22:40 +10:00
Dave Airlie
e5202a2289 Merge tag 'topic/core-stuff-2014-12-19' of git://anongit.freedesktop.org/drm-intel into drm-next
Misc drm patches with mostly polish patches from Thierry, with a bit of
generic mode validation from Ville and a few other oddball things.

* tag 'topic/core-stuff-2014-12-19' of git://anongit.freedesktop.org/drm-intel: (25 commits)
  drm: Include drm_crtc_helper.h in DocBook
  drm: Make drm_crtc_helper.h standalone includible
  drm: Move IRQ related fields to proper section
  drm: Remove stale comment
  drm: Do basic sanity checks for user modes
  drm: Perform basic sanity checks on probed modes
  drm: Reorganize probed mode validation
  drm/doc: Remove duplicate "by"
  drm/info: Remove unused code
  drm/cache: Use wbinvd helpers
  drm/plane-helper: Test for plane disable earlier
  drm/doc: Document drm_add_modes_noedid() usage
  drm: bit of spell-check / editorializing.
  drm: Prefer sizeof(type) over sizeof type
  drm: Remove useless else block
  drm: Remove unneeded braces for single statement blocks
  drm: Do not assign in if condition
  drm: Prefer kmalloc_array() over kmalloc() with multiply
  drm: Prefer kcalloc() over kzalloc() with multiply
  drm: Miscellaneous checkpatch whitespace cleanups
  ...
2015-01-09 09:13:41 +10:00
Rob Clark
d34f20d6e2 drm: Atomic modeset ioctl
The atomic modeset ioctl can be used to push any number of new values
for object properties. The driver can then check the full device
configuration as single unit, and try to apply the changes atomically.

The ioctl simply takes a list of object IDs and property IDs and their
values.

Originally based on a patch from Ville Syrjälä, although it has mutated
(mutilated?) enough since then that you probably shouldn't blame it on
him ;-)

The atomic support is hidden behind the DRM_CLIENT_CAP_ATOMIC cap (to
protect legacy userspace) and drm.atomic module param (for now).

v2: Check for file_priv->atomic to make sure we only allow userspace
in-the-know to use atomic.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-05 13:55:29 +01:00
Rob Clark
6b4959f43a drm/atomic: atomic plane properties
Expose the core plane state as properties, so they can be updated via
atomic ioctl.

v2: atomic property flag

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-05 13:55:28 +01:00
Rob Clark
88a48e297b drm: add atomic properties
Once a driver is using atomic helpers for modeset, the next step is to
switch over to atomic properties.  To do this, make sure that any
modeset objects have their ->atomic_{get,set}_property() vfuncs suitably
populated if they have custom properties (you did already remember to
plug in atomic-helper func for the legacy ->set_property() vfuncs,
right?), and then set DRIVER_ATOMIC bit in driver_features flag.

A new cap is introduced, DRM_CLIENT_CAP_ATOMIC, for the purposes of
shielding legacy userspace from atomic properties.  Mostly for the
benefit of legacy DDX drivers that do silly things like getting/setting
each property at startup (since some of the new atomic properties will
be able to trigger modeset).

Signed-off-by: Rob Clark <robdclark@gmail.com>
[danvet: Squash in fixup patch to check for DRM_MODE_PROP_ATOMIC
instaed of the CAP define when filtering properties. Reported by
Tvrtko Uruslin, acked by Rob.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-01-05 13:54:38 +01:00
Rob Clark
ac9c925616 drm: add atomic_get_property
Since we won't be using the obj->properties->values[] array to shadow
property values for atomic drivers, we are going to need a vfunc for
getting prop values.  Add that along w/ mandatory wrapper fxns.

v2: more comments and copypasta comment typo fix

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-12-18 22:22:46 +01:00
Rob Clark
40ecc694e1 drm: add atomic_set_property wrappers
As we add properties for all the standard plane/crtc/connector
attributes (in preperation for the atomic ioctl), we are going to want
to handle core state in core (rather than per driver).  Intercepting the
core properties will be easier if the atomic_set_property vfuncs are not
called directly, but instead have a mandatory wrapper function (which
will later serve as the point to intercept core properties).

v2: more verbose comments and copypasta comment fix

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-12-18 22:22:39 +01:00
Rob Clark
22b8b13b6f drm: get rid of direct property value access
For atomic drivers, we won't use the values array but instead shunt
things off to obj->atomic_get_property().  So to simplify things make
all read/write of properties values go through the accessors.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-12-17 20:23:25 +01:00
Rob Clark
b17cd757a3 drm: store property instead of id in obj attachment
Keep property pointer, instead of id, in per mode-object attachments.
This will simplify things in later patches.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-12-17 20:23:24 +01:00
Daniel Vetter
07cc0ef67f drm/atomic: Introduce state->obj backpointers
Useful since this way we can pass around just the state objects and
will get ther real object, too.

Specifically this allows us to again simplify the parameters for
set_crtc_for_plane.

v2: msm already has it's own specific plane_reset hook, don't forget
that one!

v3: Fixup kerneldoc, reported by 0-day builder.

Cc: Rob Clark <robdclark@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com> (v2)
Tested-by: Rob Clark <robdclark@gmail.com> (v2)
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2014-12-17 20:23:23 +01:00
Daniel Vetter
d9b13620fa drm/atomic-helper: Export both plane and modeset check helpers
The default call sequence for these two parts won't fit for all
drivers. So export the two pieces and explain with a bit of kerneldoc
when each should be called.

v2: Squash in fixup from Rob to actually add the newly exported
functions to headers

Cc: Rob Clark <robdclark@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2014-12-17 20:23:22 +01:00
Thierry Reding
261ea74f36 drm: Remove stale comment
The struct drm_connector_funcs kerneldoc refers to a part of struct
drm_crtc_funcs that no longer exists.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-12-17 18:31:37 +01:00
Dave Airlie
6f134d7bb4 drm/tile: expose the tile property to userspace (v3)
This takes the tiling info from the connector and
exposes it to userspace, as a blob object in a
connector property.

The contents of the blob is ABI.

v2: add property + function documentation.

v3: move property setup from previous patch.
add boilerplate + fix long line (Daniel)

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-12-09 09:56:48 +10:00
Dave Airlie
40d9b043a8 drm/connector: store tile information from displayid (v3)
This creates a tile group from DisplayID block, and
stores the pieces of parsed info from the DisplayID block
into the connector.

v2: add missing signoff, add new connector bits to docs.

v3: remove some debugging.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-12-09 09:56:48 +10:00
Dave Airlie
138f9ebb97 drm: add tile_group support. (v3)
A tile group is an identifier shared by a single monitor,
DisplayID topology has 8 bytes we can use for this, just
use those for now until something else comes up in the
future. We assign these to an idr and use the idr to
tell userspace what connectors are in the same tile group.

DisplayID v1.3 says the serial number must be unique for
displays from the same manufacturer.

v2:
destroy idr (dvdhrm)
add docbook (danvet)
airlied:- not sure how to make docbook add fns to tile group section.

v3: fix missing unlock.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-12-09 09:56:46 +10:00
Gustavo Padovan
ecb7e16bf1 drm: add helper to get crtc timings (v5)
We need to get hdisplay and vdisplay in a few places so create a
helper to make our job easier.

Note that drm_crtc_check_viewport() and intel_modeset_pipe_config() were
previously making adjustments for doublescan modes and vscan > 1 modes,
which was incorrect.  Using our new helper fixes this mistake.

v2 (by Matt): Use new stereo doubling function (suggested by Ville)

v3 (by Matt):
 - Add missing kerneldoc (Daniel)
 - Use drm_mode_copy() (Jani)

v4 (by Matt):
 - Drop stereo doubling function again; add 'stereo only' flag
   to drm_mode_set_crtcinfo() instead (Ville)

v5 (by Matt):
 - Note behavioral change in drm_crtc_check_viewport() and
   intel_modeset_pipe_config(). (Ander)
 - Describe new adjustment flags in drm_mode_set_crtcinfo()'s
   kerneldoc. (Ander)

Cc: dri-devel@lists.freedesktop.org
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Reviewed-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-12-05 21:20:25 +01:00
Rob Clark
dd275956aa drm/atomic: add plane iterator macros
Add helper macros to iterate the current, or incoming set of planes
attached to a crtc.  These helpers are only available for drivers
converted to use atomic-helpers.

Signed-off-by: Rob Clark <robdclark@gmail.com>
[danvet: Squash in fixup from Rob to move the planemask iterator to
drm_crtc.h and document it. That one is needed by the atomic ioctl so
can't be in a helper library.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-11-27 15:39:09 +01:00
Rob Clark
6ddd388ab2 drm/atomic: track bitmask of planes attached to crtc
Chasing plane->state->crtc of planes that are *not* part of the same
atomic update is racy, making it incredibly awkward (or impossible) to
do something simple like iterate over all planes and figure out which
ones are attached to a crtc.

Solve this by adding a bitmask of currently attached planes in the
crtc-state.

Note that the transitional helpers do not maintain the plane_mask.  But
they only support the legacy ioctls, which have sufficient brute-force
locking around plane updates that they can continue to loop over all
planes to see what is attached to a crtc the old way.

Signed-off-by: Rob Clark <robdclark@gmail.com>
[danvet:
- Drop comments about locking in set_crtc_for_plane since they're a
  bit misleading - we already should hold lock for the current crtc.
- Also WARN_ON if get_state on the old crtc fails since that should
  have been done already.
- Squash in fixup to check get_plane_state return value, reported by
  Dan Carpenter and acked by Rob Clark.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-11-27 15:38:15 +01:00
Daniel Vetter
3758b34193 drm: s/enum_blob_list/enum_list/ in drm_property
I guess for hysterical raisins this was meant to be the way to read
blob properties. But that's done with the two-stage approach which
uses separate blob kms object and the special-purpose get_blob ioctl.

Shipping userspace seems to have never relied on this, and the kernel
also never put any blob thing onto that property. And nowadays it
would blow up, e.g. in drm_property_destroy. Also it makes no sense to
return values in an ioctl that only returns metadata about everything.

So let's ditch all the internal code for the blob list, rename the
list to be unambiguous and sprinkle comments all over the place to
explain this peculiar piece of api.

v2: Squash in fixup from Rob to remove now unused variables.

Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-11-20 11:35:21 +10:00
Daniel Vetter
f52b69f1ec drm/atomic: Don't overrun the connector array when hotplugging
Yet another fallout from not considering DP MST hotplug. With the
previous patches we have stable indices, but it might still happen
that a connector gets added between when we allocate the array and
when we actually add a connector. Especially when we back off due to
ww mutex contention or similar issues.

So store the sizes of the arrays in struct drm_atomic_state and double
check them. We don't really care about races except that we want to
use a consistent value, so ACCESS_ONCE is all we need. And if we
indeed notice that we'd overrun the array then just give up and
restart the entire ioctl.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-11-20 11:35:20 +10:00
Dave Airlie
5bb2bbf596 drm: add properties for suggested x/y offset for connectors. (v2)
Virtual GPUs would like to give the guest some indication where on the screen
the outputs are layed out. So far we only provide modes, these
properties could be exposed to userspace so the desktop environment
could use them as hints to set the correct offsets.

v2: rename properties to be more consistent.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-11-15 09:43:23 +10:00
Dave Airlie
4fb2ac6ebe drm: Miscellaneous fixes for v3.19-rc1
This is a small collection of fixes that I've been carrying around for a
 while now. Many of these have been posted and reviewed or acked. The few
 that haven't I deemed too trivial to bother.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABAgAGBQJUZKenAAoJEN0jrNd/PrOhNwkQAJTGxhol/k0Vj+P+HVj+MROU
 9EEw67mh/c2Y4zQxEmWRE/rHdIgoz4zPL5hoJLLjPmorvKil6BIfURUybxYu9n3b
 MrunoA7adxvL+Uce+XMkuvWUE2fxFNaEwU+FT66Ib+Lo8A25FZXBqo125/RmhAHZ
 EQKcr0MBH76jybYoyB1H1pf/O3i6qODmh3kXT4Fved3jf5mZNPl5wgCSSr/4ilOZ
 wx3pzG3BvIrsyvGF6Q0oAjDEbaBTOhglfAvPFhC16cfhtPJMzVvx6v/abtipMjRv
 pUY3t96BvL1pyszcEc/ykjDX/ODlY00uOe1GgRSSXS/bThF0HJP14rTpjO+6ycON
 rap17o2feRuK3c2NzLMqv4bjkaNF/ut+2YnByulJWnpg1dDjIpJOzJ6Heep5D6+H
 lV5QP0B9LGI4718le2tv5hkH0NnQygiyRlACRzLBpq9gnXuSoSZYxjo6SuVid1X8
 Ebs+QKNoTl1NEYeEvT/CnC552MdWzntcNjE9SA1yj0RgrIS87x8bmXqh/zAwa2dI
 1Lq1wZ965ruDUPCGrd6jE8JiiEEXJjJr0y6zA4LBnR+OvmR/2GN7KCwjX+jwBthq
 9dyO9YEnxSXT/dFEUumx3F4ZKcPUntT61pT6ZblIljiJ5vw6SegDXdWDc+eZ4QyD
 y2YyxRL+KxPftkeyfU4j
 =OUaP
 -----END PGP SIGNATURE-----

Merge tag 'drm/fixes/for-3.19-rc1' of git://people.freedesktop.org/~tagr/linux into drm-next

drm: Miscellaneous fixes for v3.19-rc1

This is a small collection of fixes that I've been carrying around for a
while now. Many of these have been posted and reviewed or acked. The few
that haven't I deemed too trivial to bother.

* tag 'drm/fixes/for-3.19-rc1' of git://people.freedesktop.org/~tagr/linux:
  video/hdmi: Relicense header under MIT license
  drm/gma500: mdfld: Reuse video/mipi_display.h
  drm: Make drm_mode_create_tv_properties() signature consistent
  drm: Implement drm_get_pci_dev() dummy for !PCI
  drm/prime: Use unsigned type for number of pages
  drm/gem: Fix typo in kerneldoc
  drm: Use const data when creating blob properties
  drm: Use size_t for blob property sizes
2014-11-15 09:37:20 +10:00
Thierry Reding
2f7633125a drm: Make drm_mode_create_tv_properties() signature consistent
The prototype and the function implementation differ in their signature.
Make them consistent and use an unsigned integer for the number of modes
while at it.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-11-13 10:43:51 +01:00
Thierry Reding
12e6cecd55 drm: Use const data when creating blob properties
Creating a blob property will always copy the input data so the data
that is passed in can be const.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-11-13 10:43:49 +01:00
Thierry Reding
ecbbe59bbb drm: Use size_t for blob property sizes
size_t is the standard type when dealing with sizes of all kinds. Use it
consistently when instantiating DRM blob properties.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-11-13 10:43:48 +01:00
Daniel Vetter
4d02e2de0e drm: Per-plane locking
Turned out to be much simpler on top of my latest atomic stuff than
what I've feared. Some details:

- Drop the modeset_lock_all snakeoil in drm_plane_init. Same
  justification as for the equivalent change in drm_crtc_init done in

	commit d0fa1af40e
	Author: Daniel Vetter <daniel.vetter@ffwll.ch>
	Date:   Mon Sep 8 09:02:49 2014 +0200

	    drm: Drop modeset locking from crtc init function

  Without these the drm_modeset_lock_init would fall over the exact
  same way.

- Since the atomic core code wraps the locking switching it to
  per-plane locks was a one-line change.

- For the legacy ioctls add a plane argument to the locking helper so
  that we can grab the right plane lock (cursor or primary). Since the
  universal cursor plane might not be there, or someone really crazy
  might forgoe the primary plane even accept NULL.

- Add some locking WARN_ON to the atomic helpers for good paranoid
  measure and to check that it all works out.

Tested on my exynos atomic hackfest with full lockdep checks and ww
backoff injection.

v2: I've forgotten about the load-detect code in i915.

v3: Thierry reported that in latest 3.18-rc vmwgfx doesn't compile any
more due to

commit 21e88620aa
Author: Rob Clark <robdclark@gmail.com>
Date:   Thu Oct 30 13:39:04 2014 -0400

    drm/vmwgfx: fix lock breakage

Rebased and fix this up.

Cc: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-11-12 17:56:12 +10:00
Daniel Vetter
e2330f0719 drm/atomic: Integrate fence support
This patch is for enabling async commits. It replaces an earlier
approach which added an async boolean paramter to the ->prepare_fb
callbacks. The idea is that prepare_fb picks up the right fence to
synchronize against, which is then used by the synchronous commit
helper. For async commits drivers can either register a callback to
the fence or simply do the synchronous wait in their async work queue.

v2: Remove unused variable.

v3: Only wait for fences after the point of no return in the part
of the commit function which can be run asynchronously. This is after
the atomic state has been swapped in, hence now check
plane->state->fence.

Also add a WARN_ON to make sure we don't try to wait on a fence when
there's no fb, just as a sanity check.

Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2014-11-06 21:02:22 +01:00
Daniel Vetter
623369e533 drm: Atomic crtc/connector updates using crtc/plane helper interfaces
So this is finally the integration of the crtc and plane helper
interfaces into the atomic helper functions.

In the check function we now have a few steps:

- First we update the output routing and figure out which crtcs need a
  full mode set. Suitable encoders are selected using ->best_encoder,
  with the same semantics as the crtc helpers of implicitly disabling
  all connectors currently using the encoder.

- Then we pull all other connectors into the state update which feed
  from a crtc which changes. This must be done do catch mode changes
  and similar updates - atomic updates are differences on top of the
  current state.

- Then we call all the various ->mode_fixup to compute the adjusted
  mode. Note that here we have a slight semantic difference compared
  to the crtc helpers: We have not yet updated the encoder->crtc link
  when calling the encoder's ->mode_fixup function. But that's a
  requirement when converting to atomic since we want to prepare the
  entire state completely contained with the over drm_atomic_state
  structure. So this must be carefully checked when converting drivers
  over to atomic helpers.

- Finally we do call the atomic_check functions on planes and crtcs.

The commit function is also quite a beast:

- The only step that can fail is done first, namely pinning the
  framebuffers. After that we cross the point of no return, an async
  commit would push all that into the worker thread.

- The disabling of encoders and connectors is a bit tricky, since
  depending upon the final state we need to select different crtc
  helper functions.

- Software tracking is a bit clarified compared to the crtc helpers:
  We commit the software state before starting to touch the hardware,
  like crtc helpers. But since we just swap them we still have the old
  state (i.e. the current hw state) around, which is really handy to
  write simple disable functions. So no more
  drm_crtc_helper_disable_all_unused_functions kind of fun because
  we're leaving unused crtcs/encoders behind. Everything gets shut
  down in-order now, which is one of the key differences of the i915
  helpers compared to crtc helpers and a really nice additional
  guarantee.

- Like with the plane helpers the atomic commit function waits for one
  vblank to pass before calling the framebuffer cleanup function.

Compared to Rob's helper approach there's a bunch of upsides:

- All the interfaces which can fail are called in the ->check hook
  (i.e. ->best_match and the various ->mode_fixup hooks). This means
  that drivers can just reuse those functions and don't need to move
  everything into ->atomic_check callbacks. If drivers have no need
  for additional constraint checking beyong their existing crtc
  helper callbacks they don't need to do anything.

- The actual commit operation is properly stage: First we prepare
  framebuffers, which can potentially still fail (due to memory
  exhausting). This is important for the async case, where this must
  be done synchronously to correctly return errors.

- The output configuration changes (done with crtc helper functions)
  and the plane update (using atomic plane helpers) are correctly
  interleaved: First we shut down any crtcs that need changing, then
  we update planes and finally we enable everything again. Hardware
  without GO bits must be more careful with ordering, which this
  sequence enables.

- Also for hardware with shared output resources (like display PLLs)
  we first must shut down the old configuration before we can enable
  the new one. Otherwise we can hit an impossible intermediate state
  where there's not enough PLLs (which is the point behind atomic
  updates).

v2:
- Ensure that users of ->check update crtc_state->enable correctly.
- Update the legacy state in crtc/plane structures. Eventually we want
  to remove that, but for now the drm core still expects this (especially
  the plane->fb pointer).

v3: A few changes for better async handling:

- Reorder the software side state commit so that it happens all before
  we touch the hardware. This way async support becomes very easy
  since we can punt all the actual hw touching to a worker thread. And
  as long as we synchronize with that thread (flushing or cancelling,
  depending upon what the driver can handle) before we commit the next
  software state there's no need for any locking in the worker thread
  at all. Which greatly simplifies things.

  And as long as we synchronize with all relevant threads we can have
  a lot of them (e.g. per-crtc for per-crtc updates) running in
  parallel.

- Expose pre/post plane commit steps separately. We need to expose the
  actual hw commit step anyway for drivers to be able to implement
  asynchronous commit workers. But if we expose pre/post and plane
  commit steps individually we allow drivers to selectively use atomic
  helpers.

- I've forgotten to call encoder/bridge ->mode_set functions, fix
  this.

v4: Add debug output and fix a mixup between current and new state
that resulted in crtcs not getting updated correctly. And in an
Oops ...

v5:
- Be kind to driver writers in the vblank wait functions.. if thing
  aren't working yet, and vblank irq will never come, then let's not
  block forever.. especially under console-lock.
- Correctly clear connector_state->best_encoder when disabling.
  Spotted while trying to understand a report from Rob Clark.
- Only steal encoder if it actually changed, otherwise hilarity ensues
  if we steal from the current connector and so set the ->crtc pointer
  unexpectedly to NULL. Reported by Rob Clark.
- Bail out in disable_outputs if an output currently doesn't have a
  best_encoder - this means it's already disabled.

v6: Fixupe kerneldoc as reported by Paulo. And also fix up kerneldoc
in drm_crtc.h.

v7: Take ownership of the atomic state and clean it up with
drm_atomic_state_free().

v8 Various improvements all over:
- Polish code comments and kerneldoc.
- Improve debug output to make sure all failure cases are logged.
- Treat enabled crtc with no connectors as invalid input from userspace.
- Don't ignore the return value from mode_fixup().

v9:
- Improve debug output for crtc_state->mode_changed.

v10:
- Fixup the vblank waiting code to properly balance the vblank_get/put
  calls.
- Better comments when checking/computing crtc->mode_changed

v11: Fixup the encoder stealing logic: We can't look at encoder->crtc
since that's not in the atomic state structures and might be updated
asynchronously in and async commit. Instead we need to inspect all the
connector states and check whether the encoder is currently in used
and if so, on which crtc.

v12: Review from Sean:
- A few spelling fixes.
- Flatten control flow indent by converting if blocks to early
  continue/return in 2 places.
- Capture connectors_for_crtc return value in int num_connectors
  instead of bool has_connectors and do an explicit int->bool
  conversion with !!. I think the helper is more useful for drivers if
  it returns the number of connectors (e.g. to detect cloning
  configurations), so decided to keep that return value.

Cc: Sean Paul <seanpaul@chromium.org>
Cc: Paulo Zanoni <przanoni@gmail.com>
Cc: Rob Clark <robdclark@gmail.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-11-06 21:02:14 +01:00
Daniel Vetter
2f324b42b7 drm/crtc-helper: Transitional functions using atomic plane helpers
These two functions allow drivers to reuse their atomic plane helpers
functions for the primary plane to implement the interfaces required
by the crtc helpers for the legacy ->set_config callback.

This is purely transitional and won't be used once the driver is fully
converted. But it allows partial conversions to the atomic plane
helpers which are functional.

v2:
- Use ->atomic_duplicate_state if available.
- Don't forget to run crtc_funcs->atomic_check.

v3: Shift source coordinates correctly for 16.16 fixed point.

v4: Don't forget to call ->atomic_destroy_state if available.

v5: Fixup kerneldoc.

v6: Reuse the plane_commit function from the transitional plane
helpers to avoid too much duplication.

v7:
- Remove some stale comment.
- Correctly handle the lack of plane->state object, necessary for
  transitional use.

v8: Fixup an embarrassing h/vdisplay mixup.

Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-11-05 18:44:59 +01:00
Daniel Vetter
c2fcd274bc drm: Add atomic/plane helpers
This is the first cut of atomic helper code. As-is it's only useful to
implement a pure atomic interface for plane updates.

Later patches will integrate this with the crtc helpers so that full
atomic updates are possible. We also need a pile of helpers to aid
drivers in transitioning from the legacy world to the shiny new atomic
age. Finally we need helpers to implement legacy ioctls on top of the
atomic interface.

The design of the overall helpers<->driver interaction is fairly
simple, but has an unfortunate large interface:

- We have ->atomic_check callbacks for crtcs and planes. The idea is
  that connectors don't need any checking, and if they do they can
  adjust the relevant crtc driver-private state. So no connector hooks
  should be needed. Also the crtc helpers integration will do the
  ->best_encoder checks, so no need for that.

- Framebuffer pinning needs to be done before we can commit to the hw
  state. This is especially important for async updates where we must
  pin all buffers before returning to userspace, so that really only
  hw failures can happen in the asynchronous worker.

  Hence we add ->prepare_fb and ->cleanup_fb hooks for this resources
  management.

- The actual atomic plane commit can't fail (except hw woes), so has
  void return type. It has three stages:
  1. Prepare all affected crtcs with crtc->atomic_begin. Drivers can
     use this to unset the GO bit or similar latches to prevent plane
     updates.
  2. Update plane state by looping over all changed planes and calling
     plane->atomic_update. Presuming the hardware is sane and has GO
     bits drivers can simply bash the state into the hardware in this
     function. Other drivers might use this to precompute hw state for
     the final step.
  3. Finally latch the update for the next vblank with
     crtc->atomic_flush. Note that this function doesn't need to wait
     for the vblank to happen even for the synchronous case.

v2: Clear drm_<obj>_state->state to NULL when swapping in state.

v3: Add TODO that we don't short-circuit plane updates for now. Likely
no one will care.

v4: Squash in a bit of polish that somehow landed in the wrong (later)
patche.

v5: Integrate atomic functions into the drm docbook and fixup the
kerneldoc.

v6: Fixup fixup patch squashing fumble.

v7: Don't touch the legacy plane state plane->fb and plane->crtc. This
is only used by the legacy ioctl code in the drm core, and that code
already takes care of updating the pointers in all relevant cases.
This is in stark contrast to connector->encoder->crtc links on the
modeset side, which we still need to set since the core doesn't touch
them.

Also some more kerneldoc polish.

v8: Drop outdated comment.

v9: Handle the state->state pointer correctly: Only clearing the
->state pointer when assigning the state to the kms object isn't good
enough. We also need to re-link the swapped out state into the
drm_atomic_state structure.

v10: Shuffle the misplaced docbook template hunk around that Sean spotted.

Cc: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-11-05 18:07:01 +01:00
Daniel Vetter
cc4ceb484b drm: Global atomic state handling
Some differences compared to Rob's patches again:
- Dropped the committed and checked booleans. Checking will be
  internally enforced by always calling ->atomic_check before
  ->atomic_commit. And async handling needs to be solved differently
  because the current scheme completely side-steps ww mutex deadlock
  avoidance (and so either reinvents a new deadlock avoidance wheel or
  like the current code just deadlocks).

- State for connectors needed to be added, since now they have a
  full-blown drm_connector_state (so that drivers have something to
  attach their own stuff to).

- Refcounting is gone. I plane to solve async updates differently,
  since the lock-passing scheme doesn't cut it (since it abuses ww
  mutexes). Essentially what we need for async is a simple ownership
  transfer from the caller to the driver. That doesn't need full-blown
  refcounting.

- The acquire ctx is a pointer. Real atomic callers should have that
  on their stack, legacy entry points need to put the right one
  (obtained by drm_modeset_legacy_acuire_ctx) in there.

- I've dropped all hooks except check/commit. All the begin/end
  handling is done by core functions and is the same.

- commit/check are just thin wrappers that ensure that ->check is
  always called.

- To help out with locking in the legacy implementations I've added a
  helper to just grab all locks in the backoff case.

v2: Add notices that check/commit can fail with EDEADLK.

v3:
- More consistent naming for state_alloc.
- Add state_clear which is needed for backoff and retry.

v4: Planes/connectors can switch between crtcs, and we need to be
careful that we grab the state (and locks) for both the old and new
crtc. Improve the interface functions to ensure this.

v5: Add functions to grab affected connectors for a crtc and to recompute
the crtc->enable state. This is useful for both helper and atomic ioctl
code when e.g. removing a connector.

v6: Squash in fixup from Fengguang to use ERR_CAST.

v7: Add debug output.

v8: Make checkpatch happy about kcalloc argument ordering.

v9: Improve kerneldoc in drm_crtc.h

v10:
- Fix another kcalloc argument misorder I've missed.
- More polish for kerneldoc.

v11: Clarify the ownership rules for the state object. The new rule is
that a successful drm_atomic_commit (whether synchronous or asnyc)
always inherits the state and is responsible for the clean-up. That
way async and sync ->commit functions are more similar.

v12: A few bugfixes:
- Assign state->state pointers correctly when grabbing state objects -
  we need to link them up with the global state.
- Handle a NULL crtc in set_crtc_for_plane to simplify code flow a bit
  for the callers of this function.

v13: Review from Sean:
- kerneldoc spelling fixes
- Don't overallocate states->planes.
- Handle NULL crtc in set_crtc_for_connector.

v14: Sprinkle __must_check over all functions which do wait/wound
locking to make sure callers don't forget this. Since I have ;-)

v15: Be more explicit in the kerneldoc when functions can return
-EDEADLK what to do. And that every other -errno is fatal.

v16: Indent with tabs instead of space, spotted by Ander.

v17: Review from Thierry, small kerneldoc and other naming polish.

Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Cc: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-11-05 18:05:36 +01:00
Daniel Vetter
144ecb97cd drm: Add atomic driver interface definitions for objects
Heavily based upon Rob Clark's atomic series.
- Dropped the connector state from the crtc state, instead opting for a
  full-blown connector state. The only thing it has is the desired
  crtc, but drivers which have connector properties have now a
  data-structure to subclass.

- Rename create_state to duplicate_state. Especially for legacy ioctls
  we want updates on top of existing state, so we need a way to get at
  the current state. We need to be careful to clear the backpointers
  to the global state correctly though.

- Drop property values. Drivers with properties simply need to
  subclass the datastructures and track the decoded values in there. I
  also think that common properties (like rotation) should be decoded
  and stored in the core structures.

- Create a new set of ->atomic_set_prop functions, for smoother
  transitions from legacy to atomic operations.

- Pass the ->atomic_set_prop ioctl the right structure to avoid
  chasing pointers in drivers.

- Drop temporary boolean state for now until we resurrect them with
  the helper functions.

- Drop invert_dimensions. For now we don't need any checking since
  that's done by the higher-level legacy ioctls. But even then we
  should also add rotation/flip tracking to the core drm_crtc_state,
  not just whether the dimensions are inverted.

- Track crtc state with an enable/disable. That's equivalent to
  mode_valid, but a bit clearer that it means the entire crtc.

The global interface will follow in subsequent patches.

v2: We need to allow drivers to somehow set up the initial state and
clear it on resume. So add a plane->reset callback for that. Helpers
will be provided with default behaviour for all these.

v3: Split out the plane->reset into a separate patch.

v4: Improve kerneldoc in drm_crtc.h

v5: Remove unused inline functions for handling state objects, those
callbacks are now mandatory for full atomic support.

v6: Fix commit message nit Sean noticed.

Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-11-05 17:23:26 +01:00
Daniel Vetter
2c0c33d41e drm: fixup kerneldoc in drm_crtc.h
I've tried to cc all the people who have recently added new stuff
but forgotten to update documentation.

I've also decided not to bother documenting the massive property list
in struct drm_mode_config. If that beast keeps on growing we might want
to extract it into a separate structure which we won't document.

Cc: Thomas Wood <thomas.wood@intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2014-11-05 00:14:56 +01:00
Daniel Vetter
3bf0401cdd drm: Pull drm_crtc.h into the kerneldoc template
While writing atomic docs I've noticed that I don't get any errors
for my screw-ups in drm_crtc.h. Fix this immediately.

This just does the bare minimum to get starts, lots of stuff isn't
properly documented yet unfortunately.

v2: Fix adjacent spelling error Sean noticed.

Reviewed-by: Sean Paul <seanpaul@chromium.org>
Cc: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-11-05 00:14:56 +01:00
Daniel Vetter
3cb9ae4fd8 drm: Move drm_crtc_init from drm_crtc.h to drm_plane_helper.h
Just a bit of OCD cleanup on headers - this function isn't the core
interface any more but just a helper for drivers who haven't yet
transitioned to universal planes. Put the declaration at the right
spot and sprinkle necessary #includes over all drivers.

Maybe this helps to encourage driver maintainers to do the switch.

v2: Fix #include ordering for tegra, reported by 0-day builder.

v3: Include required headers, reported by Thierry.

Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Thierry Reding <treding@nvidia.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2014-11-05 00:14:55 +01:00
David Herrmann
d7d2c48e5c drm: move remaining includes in drmP.h to the top
Including headers somewhere else but at the top is ugly, deprecated and
was used in early days only to speed up compile-times. Those days are
over. Make headers independent and then move the inclusions to the top.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-09-10 17:42:03 +10:00
Dave Airlie
a18b29f0c6 Merge tag 'drm-intel-next-2014-09-01' of git://anongit.freedesktop.org/drm-intel into drm-next
drm-intel-next-2014-08-22:
- basic code for execlist, which is the fancy new cmd submission on gen8. Still
  disabled by default (Ben, Oscar Mateo, Thomas Daniel et al)
- remove the useless usage of console_lock for I915_FBDEV=n (Chris)
- clean up relations between ctx and ppgtt
- clean up ppgtt lifetime handling (Michel Thierry)
- various cursor code improvements from Ville
- execbuffer code cleanups and secure batch fixes (Chris)
- prep work for dev -> dev_priv transition (Chris)
- some of the prep patches for the seqno -> request object transition (Chris)
- various small improvements all over

* tag 'drm-intel-next-2014-09-01' of git://anongit.freedesktop.org/drm-intel: (86 commits)
  drm/i915: fix suspend/resume for GENs w/o runtime PM support
  drm/i915: Update DRIVER_DATE to 20140822
  drm: fix plane rotation when restoring fbdev configuration
  drm/i915/bdw: Disable execlists by default
  drm/i915/bdw: Enable Logical Ring Contexts (hence, Execlists)
  drm/i915/bdw: Document Logical Rings, LR contexts and Execlists
  drm/i915/bdw: Print context state in debugfs
  drm/i915/bdw: Display context backing obj & ringbuffer info in debugfs
  drm/i915/bdw: Display execlists info in debugfs
  drm/i915/bdw: Disable semaphores for Execlists
  drm/i915/bdw: Make sure gpu reset still works with Execlists
  drm/i915/bdw: Don't write PDP in the legacy way when using LRCs
  drm/i915: Track cursor changes as frontbuffer tracking flushes
  drm/i915/bdw: Help out the ctx switch interrupt handler
  drm/i915/bdw: Avoid non-lite-restore preemptions
  drm/i915/bdw: Handle context switch events
  drm/i915/bdw: Two-stage execlist submit process
  drm/i915/bdw: Write the tail pointer, LRC style
  drm/i915/bdw: Implement context switching (somewhat)
  drm/i915/bdw: Emission of requests with logical rings
  ...

Conflicts:
	drivers/gpu/drm/i915/i915_drv.c
2014-09-03 08:30:48 +10:00
Dave Airlie
d5a0f2e7be Merge tag 'drm-intel-next-2014-08-08' of git://anongit.freedesktop.org/drm-intel into drm-next
- Setting dp M2/N2 values plus state checker support (Vandana Kannan)
- chv power well support (Ville)
- DP training pattern 3 support for chv (Ville)
- cleanup of the hsw/bdw ddi pll code, prep work for skl (Damien)
- dsi video burst mode support (Shobhit)
- piles of other chv fixes all over (Ville et. al.)
- cleanup of the ddi translation tables setup code (Damien)
- 180 deg rotation support (Ville & Sonika Jindal)

* tag 'drm-intel-next-2014-08-08' of git://anongit.freedesktop.org/drm-intel: (59 commits)
  drm/i915: Update DRIVER_DATE to 20140808
  drm/i915: No busy-loop wait_for in the ring init code
  drm/i915: Add sprite watermark programming for VLV and CHV
  drm/i915: Round-up clock and limit drain latency
  drm/i915: Generalize drain latency computation
  drm/i915: Free pending page flip events at .preclose()
  drm/i915: clean up PPGTT checking logic
  drm/i915: Polish the chv cmnlane resrt macros
  drm/i915: Hack to tie both common lanes together on chv
  drm/i915: Add cherryview_update_wm()
  drm/i915: Update DDL only for current CRTC
  drm/i915: Parametrize VLV_DDL registers
  drm/i915: Fill out the FWx watermark register defines
  drm: Resetting rotation property
  drm/i915: Add rotation property for sprites
  drm: Add rotation_property to mode_config
  drm/i915: Make intel_plane_restore() return an error
  drm/i915: Add 180 degree sprite rotation support
  drm/i915: Introduce a for_each_intel_encoder() macro
  drm/i915: Demote the DRRS messages to debug messages
  ...
2014-08-26 09:04:32 +10:00
Thomas Wood
3a5f87c286 drm: fix plane rotation when restoring fbdev configuration
Make sure plane rotation is reset correctly when restoring the fbdev
configuration by using drm_mode_plane_set_obj_prop which calls the
driver's set_property callback.

The rotation reset feature was introduced in commit 9783de2 (drm:
Resetting rotation property) and the callback issue was originally
addressed in a previous version of the patch, but the fix was not
present in the final version.

v2: Fix documentation warning
    Add some more details to the commit message (Daniel Vetter)

Testcase: igt/kms_rotation_crc
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82236
Cc: Sonika Jindal <sonika.jindal@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Dave Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thomas Wood <thomas.wood@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-08-20 17:19:27 +02:00
Daniel Vetter
2a0d7cfd94 drm: Add a plane->reset hook
In general having this can't hurt, and the atomic helpers will need
it to be able to reset the state objects properly. The overall idea
is to reset in the order pixels flow, so planes -> crtcs ->
encoders -> connectors.

v2: Squash in fixup from Ville to correctly deference struct drm_plane
instead of drm_crtc when walking the plane list. Fixes an oops in
driver init and resume.

Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-08-11 14:24:44 +02:00
Daniel Vetter
3d30a59bfc drm: Move ->old_fb from crtc to plane
Atomic implemenations for legacy ioctls must be able to drop locks.
Which doesn't cause havoc since we only do that while constructing
the new state, so no driver or hardware state change has happened.

The only troubling bit is the fb refcounting the core does - if
someone else has snuck in then it might potentially unref an
outdated framebuffer. To fix that move the old_fb temporary storage
into struct drm_plane for all ioctls, so that the atomic helpers can
update it.

v2: Fix up the error case handling as suggested by Matt Roper and just
grab locks uncoditionally - there's no point in optimizing the locking
for when userspace gets it wrong.

Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-08-08 17:46:52 +02:00
Daniel Vetter
d059f652e7 drm: Handle legacy per-crtc locking with full acquire ctx
So drivers using the atomic interfaces expect that they can acquire
additional locks internal to the driver as-needed. Examples would be
locks to protect shared state like shared display PLLs.

Unfortunately the legacy ioctls assume that all locking is fully done
by the drm core. Now for those paths which grab all locks we already
have to keep around an acquire context in dev->mode_config. Helper
functions that implement legacy interfaces in terms of atomic support
can therefore grab this acquire contexts and reuse it.

The only interfaces left are the cursor and pageflip ioctls. So add
functions to grab the crtc lock these need using an acquire context
and preserve it for atomic drivers to reuse.

v2:
- Fixup comments&kerneldoc.
- Drop the WARNING from modeset_lock_all_crtcs since that can be used
  in legacy paths with crtc locking.

v3: Fix a type on the kerneldoc Dave spotted.

Cc: Dave Airlie <airlied@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-08-08 17:46:45 +02:00
Daniel Vetter
a6a8bb848d drm: Move modeset_lock_all helpers to drm_modeset_lock.[hc]
Somehow we've forgotten about this little bit of OCD.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-08-08 17:46:40 +02:00
Daniel Vetter
10f637bf29 drm: Add drm_plane/connector_index
In the atomic state we'll have an array of states for crtcs, planes
and connectors and need to be able to at them by their index. We
already have a drm_crtc_index function so add the missing ones for
planes and connectors.

If it later on turns out that the list walking is too expensive we can
add the index to the relevant modeset objects.

Rob Clark doesn't like the loops too much, but we can always add an
obj->idx parameter later on. And for now reiterating is actually safer
since nowadays we have hotpluggable connectors (thanks to DP MST).

v2: Fix embarrassing copypasta fail in kerneldoc and header
declarations, spotted by Matt Roper.

Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-08-08 17:46:03 +02:00
Sonika Jindal
2a297cce2e drm: Add rotation_property to mode_config
Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-08-08 17:43:52 +02:00
Chris Wilson
eaf99c749d drm: Perform cmdline mode parsing during connector initialisation
i915.ko has a custom fbdev initialisation routine that aims to preserve
the current mode set by the BIOS, unless overruled by the user. The
user's wishes are determined by what, if any, mode is specified on the
command line (via the video= parameter). However, that command line mode
is first parsed by drm_fb_helper_initial_config() which is called after
i915.ko's custom initial_config() as a fallback method. So in order for
us to honour it, we need to move the cmdline parser earlier. If we
perform the connector cmdline parsing as soon as we initialise the
connector, that cmdline mode and forced status is then available even if
the fbdev helper is not compiled in or never called.

We also then expose the cmdline user mode in the connector mode lists.

v2: Rebase after connector->name upheaval.

v3: Adapt mga200 to look for the cmdline mode in the new place. Nicely
simplifies things while at that.

v4: Fix checkpatch.

v5: Select FB_CMDLINE to adapt to the changed fbdev patch.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=73154
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> (v2)
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> (v2)
Cc: dri-devel@lists.freedesktop.org
Cc: Julia Lemire <jlemire@matrox.com>
Cc: Dave Airlie <airlied@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-08-06 14:50:12 +02:00
Daniel Vetter
4dac3edfe6 Merge remote-tracking branch 'airlied/drm-next' into drm-intel-next
Pull in drm-next with Dave's DP MST support so that I can merge some
conflicting patches which also touch the driver load sequencing around
interrupt handling.

Conflicts:
	drivers/gpu/drm/i915/intel_display.c
	drivers/gpu/drm/i915/intel_dp.c

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-07-29 20:49:36 +02:00
Vandana Kannan
ff587e45a1 drm/crtc: Add property for aspect ratio
Added a property to enable user space to set aspect ratio.
This patch contains declaration of the property and code to create the
property.

v2: Thierry's review comments.
	- Made aspect ratio enum generic instead of HDMI/CEA specfic
	- Removed usage of temporary aspect_ratio variable

v3: Thierry's review comments.
	- Fixed indentation

v4: Thierry's review comments.
	- Return ENOMEM when property creation fails

Signed-off-by: Vandana Kannan <vandana.kannan@intel.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-07-23 07:05:24 +02:00
Dave Airlie
8a105aaa25 Merge branch 'drm-armada-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into drm-next
Merge armada changes, I've confirmed the componenet changes are same as in Greg's tree.
* 'drm-armada-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  drm/armada: register crtc with port
  drm/armada: permit CRTCs to be registered as separate devices
  dt-bindings: add Marvell Dove LCD controller documentation
  drm/armada: update Armada 510 (Dove) to use "ext_ref_clk1" as the clock
  drm/armada: convert to componentized support
  drm: add of_graph endpoint helper to find possible CRTCs
  component: fix bug with legacy API
  drm/armada: make variant a CRTC thing
  drm/armada: move variant initialisation to CRTC init
  drm/armada: use number of CRTCs registered
  drm/armada: move IRQ handling into CRTC
  component: add support for component match array
  component: ignore multiple additions of the same component
  component: fix missed cleanup in case of devres failure
2014-07-23 13:01:56 +10:00
Ville Syrjälä
3c9855f6dc drm: Add drm_rotation_simplify()
drm_rotation_simplify() can be used to eliminate unsupported rotation
flags. It will check if any unsupported flags are present, and if so
it will modify the rotation to an alternate form by adding 180 degrees
to rotation angle, and flipping the reflect x and y bits. The hope is
that this identity transform will eliminate the unsupported flags.

Of course that might not result in any more supported rotation, so
the caller is still responsible for checking the result afterwards.

Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Acked-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-07-11 23:44:20 +02:00
Ville Syrjälä
c1df5f3c2d drm: Add drm_mode_create_rotation_property()
Add a function to create a standards compliant rotation property.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Acked-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-07-11 23:43:52 +02:00
Ville Syrjälä
7689ffb32f drm: Add support_bits parameter to drm_property_create_bitmask()
Make drm_property_create_bitmask() a bit more generic by allowing the
caller to specify which bits are in fact supported. This allows multiple
callers to use the same enum list, but still create different versions
of the same property with different list of supported bits.

v2: Populate values[] array as non-sparse
    Make supported_bits 64bit
    Fix up omapdrm call site (Rob)

Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Sagar Kamble <sagar.a.kamble@intel.com>
Acked-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-07-11 23:43:23 +02:00
Ville Syrjälä
0659696196 drm: Move DRM_ROTATE bits out of omapdrm into drm_crtc.h
The rotation property stuff should be standardized among all drivers.
Move the bits to drm_crtc.h from omap_drv.h.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Acked-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-07-11 23:42:45 +02:00
Russell King
7e435aad38 drm: add of_graph endpoint helper to find possible CRTCs
Add a helper to allow encoders to find their possible CRTCs from the
OF graph without having to re-implement this functionality.  We add a
device_node to drm_crtc which corresponds with the port node in the
DT description of the CRTC device.

We can then scan the DRM device list for CRTCs to find their index,
matching the appropriate CRTC using the port device_node, thus building
up the possible CRTC mask.

Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-07-11 15:38:28 +01:00
Dave Airlie
ca5a1b9ba0 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
2014-07-09 10:38:42 +10:00
Dave Airlie
43aba7eb0d 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>
2014-07-08 11:40:23 +10:00
Dave Airlie
2390cd11bf 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>
2014-07-08 11:39:04 +10:00
Thomas Wood
4cf2b28146 drm/debugfs: add an "edid_override" file per connector
Add a file to debugfs for each connector to allow the EDID to be
overridden.

v2: Copy ubuf before accessing it and reject invalid length data. (David
    Herrmann)
    Ensure override_edid is reset when a new EDID value is written.
    (David Herrmann)
    Fix the debugfs file permissions. (David Herrmann)

Signed-off-by: Thomas Wood <thomas.wood@intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-06-19 08:56:28 +02:00
Thomas Wood
30f6570798 drm/debugfs: add a "force" file per connector
Add a file to debugfs for each connector to enable modification of the
"force" connector attribute. This allows connectors to be enabled or
disabled for testing and debugging purposes.

v2: Add stricter value checking and clean up debugfs_entry if file
    creation fails in drm_debugfs_connector_add. (David Herrmann)

Signed-off-by: Thomas Wood <thomas.wood@intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-06-19 08:56:01 +02:00
Thomas Wood
34ea3d3863 drm: add register and unregister functions for connectors
Introduce generic functions to register and unregister connectors. This
provides a common place to add and remove associated user space
interfaces.

Signed-off-by: Thomas Wood <thomas.wood@intel.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-06-19 08:55:28 +02:00
Matt Roper
fc1d3e44ef drm: Allow drivers to register cursor planes with crtc
Universal plane support had placeholders for cursor planes, but didn't
actually do anything with them.  Save the cursor plane reference inside
the crtc and update the cursor plane parameter from void* to drm_plane.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Pallavi G<pallavi.g@intel.com>
Acked-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-06-13 17:45:22 +02:00
Matt Roper
161d0dc1dc drm: Support legacy cursor ioctls via universal planes when possible (v4)
If drivers support universal planes and have registered a cursor plane
with the DRM core, we should use that universal plane support when
handling legacy cursor ioctls.  Drivers that transition to universal
planes won't have to maintain separate legacy ioctl handling; drivers
that don't transition to universal planes will continue to operate
without any change to behavior.

Note that there's a bit of a mismatch between the legacy cursor ioctls
and the universal plane API's --- legacy ioctl's use driver buffer
handles directly whereas the universal plane API takes drm_framebuffers.
Since there's no way to recover the driver handle from a
drm_framebuffer, we can implement legacy ioctl's in terms of universal
plane interfaces, but cannot implement universal plane interfaces in
terms of legacy ioctls.  Specifically, there's no way to create a
general cursor helper in the way we previously created a primary plane
helper.

It's important to land this patch before any patches that add universal
cursor support to individual drivers so that drivers don't have to worry
about juggling two different styles of reference counting for cursor
buffers when userspace mixes and matches legacy and universal cursor
calls.  With this patch, a driver that switches to universal cursor
support may assume that all cursor buffers are wrapped in a
drm_framebuffer and can rely on framebuffer reference counting for all
cursor operations.

v4:
 - Add comments pointing out setplane_internal's reference-eating
   semantics.
v3:
 - Drop drm_mode_rmfb() call that is no longer needed now that we're
   using setplane_internal(), which takes care of deref'ing the
   appropriate framebuffer.
v2:
 - Use new add_framebuffer_internal() function to create framebuffer
   rather than trying to call directly into the ioctl interface and
   look up the handle returned.
 - Use new setplane_internal() function to update the cursor plane
   rather than calling through the ioctl interface.  Note that since
   we're no longer looking up an fb_id, no extra reference will be
   taken here.
 - Grab extra reference to fb under lock in !BO case to avoid issues
   where racing userspace could cause the fb to be destroyed out from
   under us after we grab the fb pointer.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Pallavi G<pallavi.g@intel.com>
Acked-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-06-13 17:45:21 +02:00
Mario Kleiner
5d02626d31 drm/edid: Store all supported hdmi deep color modes in drm_display_info
HDMI deep color setup must know which modes are supported if
it needs to degrade gracefully, as only 12 bpc / dc_36 is
guaranteed, but 10 bpc / dc_30 is optional. The maximum bpc
is not sufficient for this.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-09 22:06:49 -04:00