Commit Graph

458 Commits

Author SHA1 Message Date
Thierry Reding 87904c3e82 drm/tegra: dsi: Enhance runtime power management
The MIPI DSI output on Tegra SoCs requires some external logic to
calibrate the MIPI pads before a video signal can be transmitted. This
MIPI calibration logic requires to be powered on while the MIPI pads are
being used, which is currently done as part of the DSI driver's probe
implementation.

This is suboptimal because it will leave the MIPI calibration logic
powered up even if the DSI output is never used.

On Tegra114 and earlier this behaviour also causes the driver to hang
while trying to power up the MIPI calibration logic because the power
partition that contains the MIPI calibration logic will be powered on
by the display controller at output pipeline configuration time. Thus
the power up sequence for the MIPI calibration logic happens before
it's power partition is guaranteed to be enabled.

Fix this by splitting up the API into a request/free pair of functions
that manage the runtime dependency between the DSI and the calibration
modules (no registers are accessed) and a set of enable, calibrate and
disable functions that program the MIPI calibration logic at points in
time where the power partition is really enabled.

While at it, make sure that the runtime power management also works in
ganged mode, which is currently also broken.

Reported-by: Jonathan Hunter <jonathanh@nvidia.com>
Tested-by: Jonathan Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-08-24 15:58:57 +02:00
Laurent Pinchart 420382adf6 drm: Don't implement empty prepare_fb()/cleanup_fb()
The plane .prepare_fb() and .cleanup_fb() helpers are optional, there's
no need to implement empty stubs, and no need to explicitly set the
function pointers to NULL either.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
[danvet: Resolved conflicts with Chris' patch.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2016-08-19 10:58:55 +02:00
Chris Wilson 1832040d01 drm: Allow drivers to modify plane_state in prepare_fb/cleanup_fb
The drivers have to modify the atomic plane state during the prepare_fb
callback so they track allocations, reservations and dependencies for
this atomic operation involving this fb. In particular, how else do we
set the plane->fence from the framebuffer!

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20160818180017.20508-1-chris@chris-wilson.co.uk
2016-08-19 10:58:55 +02:00
Daniel Vetter 2383050f6a Merge remote-tracking branch 'airlied/drm-next' into topic/drm-misc
Backmerge drm-next to be able to apply Chris' connector_unregister_all
cleanup (need latest i915 and sun4i state for that).

Also there's a trivial conflict in ttm_bo.c that git rerere fails to
remember.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2016-07-19 09:27:29 +02:00
Markus Elfring a63caf13a8 drm/tegra: Delete an unnecessary check before the function call "vunmap"
The vunmap() function performs also input parameter validation.
Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/b3fbdcaf-1bda-7ce9-935b-2d716727ec39@users.sourceforge.net
2016-07-18 09:11:30 +02:00
Dave Airlie 877fa9a42d drm/tegra: Changes for v4.8-rc1
This set of changes contains a bunch of cleanups to the host1x driver as
 well as the addition of a pin controller for DPAUX, which is required by
 boards to configure the DPAUX pads in AUX mode (for DisplayPort) or I2C
 mode (for HDMI and DDC).
 
 Included is also a bit of rework of the SOR driver in preparation to add
 DisplayPort support as well as some refactoring and cleanup.
 
 Finally, all output drivers are converted to runtime PM, which greatly
 simplifies the handling of clocks and resets.
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Merge tag 'drm/tegra/for-4.8-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

drm/tegra: Changes for v4.8-rc1

This set of changes contains a bunch of cleanups to the host1x driver as
well as the addition of a pin controller for DPAUX, which is required by
boards to configure the DPAUX pads in AUX mode (for DisplayPort) or I2C
mode (for HDMI and DDC).

Included is also a bit of rework of the SOR driver in preparation to add
DisplayPort support as well as some refactoring and cleanup.

Finally, all output drivers are converted to runtime PM, which greatly
simplifies the handling of clocks and resets.

* tag 'drm/tegra/for-4.8-rc1' of git://anongit.freedesktop.org/tegra/linux: (35 commits)
  drm/tegra: sor: Reject HDMI 2.0 modes
  drm/tegra: sor: Prepare for generic PM domain support
  drm/tegra: dsi: Prepare for generic PM domain support
  drm/tegra: sor: Make XBAR configurable per SoC
  drm/tegra: sor: Use sor1_src clock to set parent for HDMI
  dt-bindings: display: tegra: Add source clock for SOR
  drm/tegra: sor: Implement sor1_brick clock
  drm/tegra: sor: Implement runtime PM
  drm/tegra: hdmi: Implement runtime PM
  drm/tegra: dsi: Implement runtime PM
  drm/tegra: dc: Implement runtime PM
  drm/tegra: hdmi: Enable audio over HDMI
  drm/tegra: sor: Do not support deep color modes
  drm/tegra: sor: Extract tegra_sor_mode_set()
  drm/tegra: sor: Split out tegra_sor_apply_config()
  drm/tegra: sor: Rename tegra_sor_calc_config()
  drm/tegra: sor: Factor out tegra_sor_set_parent_clock()
  drm/tegra: dpaux: Add pinctrl support
  dt-bindings: Add bindings for Tegra DPAUX pinctrl driver
  drm/tegra: Prepare DPAUX for supporting generic PM domains
  ...
2016-07-16 11:23:50 +10:00
Thierry Reding 64ea25c3bc drm/tegra: sor: Reject HDMI 2.0 modes
Enabling HDMI 2.0 modes requires extra programming and will not work
with the current driver, so reject all those modes.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-14 14:57:04 +02:00
Jon Hunter f8c79120aa drm/tegra: sor: Prepare for generic PM domain support
The SOR driver for Tegra requires the SOR power partition to be enabled.
Now that Tegra supports the generic PM domain framework we manage the
SOR power partition via this framework. However, the sequence for
gating/ungating the SOR power partition requires that the SOR reset is
asserted/de-asserted at the time the SOR power partition is
gated/ungated, respectively. Now that the reset control core assumes
that resets are exclusive, the Tegra generic PM domain code and the SOR
driver cannot request the same reset unless we mark the reset as shared.
Sharing resets will not work in this case because we cannot guarantee
that the reset will be asserted/de-asserted at the appropriate time.
Therefore, given that the Tegra generic PM domain code will handle the
resets, do not request the reset in the SOR driver if the SOR device has
a PM domain associated.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-14 14:57:03 +02:00
Jon Hunter 64230aa075 drm/tegra: dsi: Prepare for generic PM domain support
The DSI driver for Tegra requires the SOR power partition to be enabled.
Now that Tegra supports the generic PM domain framework we manage the
SOR power partition via this framework. However, the sequence for
gating/ungating the SOR power partition requires that the DSI reset is
asserted/de-asserted at the time the SOR power partition is
gated/ungated, respectively. Now that the reset control core assumes
that resets are exclusive, the Tegra generic PM domain code and the DSI
driver cannot request the same reset unless we mark the reset as shared.
Sharing resets will not work in this case because we cannot guarantee
that the reset will be asserted/de-asserted at the appropriate time.
Therefore, given that the Tegra generic PM domain code will handle the
resets, do not request the reset in the DSI driver if the DSI device has
a PM domain associated.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-14 14:57:02 +02:00
Thierry Reding 30b4943558 drm/tegra: sor: Make XBAR configurable per SoC
Provide a per-SoC mapping of lanes which can be used to configure the
XBAR.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-14 14:57:02 +02:00
Thierry Reding 618dee3941 drm/tegra: sor: Use sor1_src clock to set parent for HDMI
When running in HDMI mode, the sor1 IP block needs to use the sor1_src
as parent clock, and in turn configure the sor1_src to use pll_d2_out0
as its parent.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-14 14:57:01 +02:00
Thierry Reding b299221ca9 drm/tegra: sor: Implement sor1_brick clock
sor1_brick is a clock that can be used as a source for the sor1 clock.
The registers to control the clock output are part of the sor1 IP block
and hence the sor driver is the best place to implement it.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-14 14:57:00 +02:00
Thierry Reding aaff8bd2e8 drm/tegra: sor: Implement runtime PM
Use runtime PM to clock-(un)gate and (de)assert reset to the SOR
controller. This ties in nicely with atomic DPMS in that a runtime PM
reference is taken before a pipe is enabled and dropped after it has
been shut down.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-04 11:39:13 +02:00
Thierry Reding 5234549b93 drm/tegra: hdmi: Implement runtime PM
Use runtime PM to clock-(un)gate and (de)assert reset to the HDMI
controller. This ties in nicely with atomic DPMS in that a runtime PM
reference is taken before a pipe is enabled and dropped after it has
been shut down.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-04 11:38:11 +02:00
Thierry Reding ef8187d752 drm/tegra: dsi: Implement runtime PM
Use runtime PM to clock-(un)gate, (de)assert reset and control power to
the DSI controller. This ties in nicely with atomic DPMS in that a
runtime PM reference is taken before a pipe is enabled and dropped after
it has been shut down.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-04 11:37:00 +02:00
Thierry Reding 33a8eb8d40 drm/tegra: dc: Implement runtime PM
Use runtime PM to clock-gate, assert reset and powergate the display
controller. This ties in nicely with atomic DPMS in that a runtime PM
reference is taken before a pipe is enabled and dropped after it has
been shut down.

To make sure this works, make sure to only ever update planes on active
CRTCs, otherwise register accesses to a clock-gated and reset CRTC will
hang the CPU.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-04 11:35:46 +02:00
Thierry Reding 2ccb396e9d drm/tegra: hdmi: Enable audio over HDMI
In order to use the HDA codec to forward audio data to the HDMI codec it
needs the ELD that is parsed from the monitor's EDID.

Also implement an interoperability mechanism between the HDA controller
and the HDMI codec. This uses vendor-defined scratch registers to pass
data from the HDMI codec driver to the HDMI driver (that implements the
receiving end of the HDMI codec). A custom format is used to pass audio
sample rate and channel count to the HDMI driver.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-04 11:34:31 +02:00
Thierry Reding c31efa7a30 drm/tegra: sor: Do not support deep color modes
Current generations of Tegra do not support deep color modes, so force
8 bits per color even if the connected monitor or panel supports more.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-04 11:33:21 +02:00
Thierry Reding 2bd1dd399f drm/tegra: sor: Extract tegra_sor_mode_set()
The code to set a video mode is common to all types of outputs that the
SOR can drive. Extract it into a separate function so that it can be
shared.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-04 11:31:22 +02:00
Thierry Reding 402f6bcd94 drm/tegra: sor: Split out tegra_sor_apply_config()
This function is useful in both eDP and DP modes, so split it out in
anticipation of adding DP support.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-01 14:42:07 +02:00
Thierry Reding a198359e39 drm/tegra: sor: Rename tegra_sor_calc_config()
Use a slightly more sensible name, tegra_sor_compute_config().

Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-01 14:42:06 +02:00
Thierry Reding 25bb2cec88 drm/tegra: sor: Factor out tegra_sor_set_parent_clock()
Switching the SOR parent clock can glitch if done while the clock is
enabled. Extract a common function that can be used to disable the
module clock, switch the parent and reenable the module clock.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-07-01 14:42:01 +02:00
Jon Hunter 0751bb5c44 drm/tegra: dpaux: Add pinctrl support
The DPAUX pins are shared with an internal I2C controller. To allow
these pins to be muxed to the I2C controller, register a pinctrl device
for the DPAUX device.

This is based upon work by Thierry Reding <treding@nvidia.com>.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-30 22:13:14 +02:00
Jon Hunter 9b99044afc drm/tegra: Prepare DPAUX for supporting generic PM domains
To utilise the DPAUX on Tegra, the SOR power partition must be enabled.
Now that Tegra supports the generic PM domain framework we manage the
SOR power partition via this framework for DPAUX. However, the sequence
for gating/ungating the SOR power partition requires that the DPAUX
reset is asserted/de-asserted at the time the SOR power partition is
gated/ungated, respectively. Now that the reset control core assumes
that resets are exclusive, the Tegra generic PM domain code and the
DPAUX driver cannot request the same reset unless we mark the resets as
shared. Sharing resets will not work in this case because we cannot
guarantee that the reset will be asserted/de-asserted at the appropriate
time. Therefore, given that the Tegra generic PM domain code will handle
the DPAUX reset, do not request the reset in the DPAUX driver if the
DPAUX device has a PM domain associated.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-30 12:44:50 +02:00
Jon Hunter 9d0e09c15c drm/tegra: dpaux: Add helpers for setting up pads
In preparation for adding pinctrl support for the DPAUX pads, add a
couple of helpers functions to configure the pads and control their
power.

Please note that although a simple if-statement could be used instead
of a case statement for configuring the pads as there are only two
possible modes, a case statement is used because when integrating with
the pinctrl framework, we need to be able to handle invalid modes that
could be passed.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-30 12:40:37 +02:00
Jon Hunter bcbd63dfc9 drm/tegra: dpaux: Clean-up on probe failure
If the probing of the DPAUX fails, then clocks are left enabled and the
DPAUX reset de-asserted. Add code to perform the necessary clean-up on
probe failure by disabling clocks and asserting the reset.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-30 12:30:43 +02:00
Boris Brezillon 26b4ee34e7 drm: tegra: Rely on the default ->best_encoder() behavior
All outputs have a 1:1 relationship between connectors and encoders
and the driver is relying on the atomic helpers: we can drop the custom
->best_encoder() implementation and let the core call
drm_atomic_helper_best_encoder() for us.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1465300095-16971-14-git-send-email-boris.brezillon@free-electrons.com
2016-06-10 17:24:48 +02:00
Daniel Vetter 5e84c2690b drm/atomic-helper: Massage swap_state signature somewhat
- dev is redundant, we have state->atomic
- add stall parameter, which must be set when swapping needs to stall
  for preceeding commits to stop looking at ->state pointers. Currently
  all drivers need this to be, just prep work for a glorious future.

v2: Rebased on top of

commit e7cf0963f8
Author: Gerd Hoffmann <kraxel@redhat.com>
Date:   Tue May 31 08:50:47 2016 +0200

    virtio-gpu: add atomic_commit function

Cc: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1465509992-19284-1-git-send-email-daniel.vetter@ffwll.ch
Link: http://patchwork.freedesktop.org/patch/msgid/1465388359-8070-2-git-send-email-daniel.vetter@ffwll.ch
2016-06-10 16:52:12 +02:00
Linus Torvalds 1d6da87a32 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
 "Here's the main drm pull request for 4.7, it's been a busy one, and
  I've been a bit more distracted in real life this merge window.  Lots
  more ARM drivers, not sure if it'll ever end.  I think I've at least
  one more coming the next merge window.

  But changes are all over the place, support for AMD Polaris GPUs is in
  here, some missing GM108 support for nouveau (found in some Lenovos),
  a bunch of MST and skylake fixes.

  I've also noticed a few fixes from Arnd in my inbox, that I'll try and
  get in asap, but I didn't think they should hold this up.

  New drivers:
   - Hisilicon kirin display driver
   - Mediatek MT8173 display driver
   - ARC PGU - bitstreamer on Synopsys ARC SDP boards
   - Allwinner A13 initial RGB output driver
   - Analogix driver for DisplayPort IP found in exynos and rockchip

  DRM Core:
   - UAPI headers fixes and C++ safety
   - DRM connector reference counting
   - DisplayID mode parsing for Dell 5K monitors
   - Removal of struct_mutex from drivers
   - Connector registration cleanups
   - MST robustness fixes
   - MAINTAINERS updates
   - Lockless GEM object freeing
   - Generic fbdev deferred IO support

  panel:
   - Support for a bunch of new panels

  i915:
   - VBT refactoring
   - PLL computation cleanups
   - DSI support for BXT
   - Color manager support
   - More atomic patches
   - GEM improvements
   - GuC fw loading fixes
   - DP detection fixes
   - SKL GPU hang fixes
   - Lots of BXT fixes

  radeon/amdgpu:
   - Initial Polaris support
   - GPUVM/Scheduler/Clock/Power improvements
   - ASYNC pageflip support
   - New mesa feature support

  nouveau:
   - GM108 support
   - Power sensor support improvements
   - GR init + ucode fixes.
   - Use GPU provided topology information

  vmwgfx:
   - Add host messaging support

  gma500:
   - Some cleanups and fixes

  atmel:
   - Bridge support
   - Async atomic commit support

  fsl-dcu:
   - Timing controller for LCD support
   - Pixel clock polarity support

  rcar-du:
   - Misc fixes

  exynos:
   - Pipeline clock support
   - Exynoss4533 SoC support
   - HW trigger mode support
   - export HDMI_PHY clock
   - DECON5433 fixes
   - Use generic prime functions
   - use DMA mapping APIs

  rockchip:
   - Lots of little fixes

  vc4:
   - Render node support
   - Gamma ramp support
   - DPI output support

  msm:
   - Mostly cleanups and fixes
   - Conversion to generic struct fence

  etnaviv:
   - Fix for prime buffer handling
   - Allow hangcheck to be coalesced with other wakeups

  tegra:
   - Gamme table size fix"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (1050 commits)
  drm/edid: add displayid detailed 1 timings to the modelist. (v1.1)
  drm/edid: move displayid validation to it's own function.
  drm/displayid: Iterate over all DisplayID blocks
  drm/edid: move displayid tiled block parsing into separate function.
  drm: Nuke ->vblank_disable_allowed
  drm/vmwgfx: Report vmwgfx version to vmware.log
  drm/vmwgfx: Add VMWare host messaging capability
  drm/vmwgfx: Kill some lockdep warnings
  drm/nouveau/gr/gf100-: fix race condition in fecs/gpccs ucode
  drm/nouveau/core: recognise GM108 chipsets
  drm/nouveau/gr/gm107-: fix touching non-existent ppcs in attrib cb setup
  drm/nouveau/gr/gk104-: share implementation of ppc exception init
  drm/nouveau/gr/gk104-: move rop_active_fbps init to nonctx
  drm/nouveau/bios/pll: check BIT table version before trying to parse it
  drm/nouveau/bios/pll: prevent oops when limits table can't be parsed
  drm/nouveau/volt/gk104: round up in gk104_volt_set
  drm/nouveau/fb/gm200: setup mmu debug buffer registers at init()
  drm/nouveau/fb/gk20a,gm20b: setup mmu debug buffer registers at init()
  drm/nouveau/fb/gf100-: allocate mmu debug buffers
  drm/nouveau/fb: allow chipset-specific actions for oneinit()
  ...
2016-05-23 11:48:48 -07:00
Daniel Vetter fcee59065e drm: Nuke ->vblank_disable_allowed
This was added in

commit 0a3e67a4ca
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date:   Tue Sep 30 12:14:26 2008 -0700

    drm: Rework vblank-wait handling to allow interrupt reduction.

to stay backwards-compatible with old UMS code that didn't even tell
the kernel when it did a modeset, so that the kernel could
save/restore vblank counters. At worst this means vblanks will be
somewhat funky on a setup that very likely no one still runs.

So let's just nuke it.

Plan B would be to set it unconditionally in drm_vblank_init for kms
drivers, instead of in each driver separately. So if this patch breaks
anything please only restore the hunks in drmP.h and drm_irq.c, plus
add a check for DRIVER_MODESET in drm_vblank_init.

Stumbled over this in a discussion on irc with Chris.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Mark Yao <mark.yao@rock-chips.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-05-21 07:03:31 +10:00
Jon Hunter 280dc0e145 drm/tegra: Fix crash caused by reference count imbalance
Commit d2307dea14 ("drm/atomic: use connector references (v3)") added
reference counting for DRM connectors and this caused a crash when
exercising system suspend on Tegra114 Dalmore.

The Tegra DSI driver implements a Tegra specific function,
tegra_dsi_connector_duplicate_state(), to duplicate the connector state
and destroys the state using the generic helper function,
drm_atomic_helper_connector_destroy_state(). Following commit
d2307dea14 ("drm/atomic: use connector references (v3)") there is
now an imbalance in the connector reference count because the Tegra
function to duplicate state does not take a reference when duplicating
the state information. However, the generic helper function to destroy
the state information assumes a reference has been taken and during
system suspend, when the connector state is destroyed, this leads to a
crash because we attempt to put the reference for an object that has
already been freed.

Fix this by calling __drm_atomic_helper_connector_duplicate_state() from
tegra_dsi_connector_duplicate_state() to ensure that we take a reference
on a connector if crtc is set. Note that this will also copy the
connector state a 2nd time, but this should be harmless.

By fixing tegra_dsi_connector_duplicate_state() to take a reference,
although a crash was no longer seen, it was then observed that after
each system suspend-resume cycle, the reference would be one greater
than before the suspend-resume cycle. Following commit d2307dea14
("drm/atomic: use connector references (v3)"), it was found that we
also need to put the reference when calling the function
tegra_dsi_connector_reset() before freeing the state. Fix this by
updating tegra_dsi_connector_reset() to call the function
__drm_atomic_helper_connector_destroy_state() in order to put the
reference for the connector.

Fixes: d2307dea14 ("drm/atomic: use connector references (v3)")

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1463585856-16606-1-git-send-email-jonathanh@nvidia.com
2016-05-18 18:03:33 +02:00
Daniel Vetter 2f701695fd drm: Drop plane argument from __drm_atomic_helper_plane_destroy_state
It's unused, and really this helper should only look at the state
structure and nothing else.

v2: Fix commit message (Laurent).

v3: Rebase onto mtk driver merge.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Mark Yao <mark.yao@rock-chips.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1462804451-15318-2-git-send-email-daniel.vetter@ffwll.ch
2016-05-17 08:56:55 +02:00
Daniel Vetter ec2dc6a0fe drm: Drop crtc argument from __drm_atomic_helper_crtc_destroy_state
It's unused, and really this helper should only look at the state
structure and nothing else.

v2: Rebase on top of rockchip changes

v3: Drop unrelated hunk, spotted by Laurent.

v4: Rebase onto mtk driver merge.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Mark Yao <mark.yao@rock-chips.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1462804451-15318-1-git-send-email-daniel.vetter@ffwll.ch
2016-05-17 08:56:41 +02:00
Chris Wilson a8ad0bd84f drm: Remove unused drm_device from drm_gem_object_lookup()
drm_gem_object_lookup() has never required the drm_device for its file
local translation of the user handle to the GEM object. Let's remove the
unused parameter and save some space.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: dri-devel@lists.freedesktop.org
Cc: Dave Airlie <airlied@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
[danvet: Fixup kerneldoc too.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2016-05-17 08:47:30 +02:00
Dave Airlie 99ee872950 Merge tag 'topic/drm-misc-2016-05-13' of git://anongit.freedesktop.org/drm-intel into drm-next
I kinda hoped that I could still sneak in Noralf's
drm_simple_display_pipe, since there's intereset by others now (for tilcdc
at least). But it wasn't ready by a hair. Oh well.

Otherwise random stuff plus prep patches from Noralf.

* tag 'topic/drm-misc-2016-05-13' of git://anongit.freedesktop.org/drm-intel:
  drm/atomic: Add drm_atomic_helper_best_encoder()
  drm/atomic: Don't skip drm_bridge_*() calls if !drm_encoder_helper_funcs
  drm/fb-cma-helper: Hook up to DocBook and fix some docs
  drm/fb-helper: Remove mention of CONFIG_FB_DEFERRED_IO in docs
  drm/sti: include linux/seq_file.h where needed
  drm/tegra: Use lockless gem BO free callback
  drm/exynos: Use lockless gem BO free callback
  drm: Make drm_encoder_helper_funcs optional
2016-05-17 07:06:14 +10:00
Dave Airlie 95306975e9 drm/tegra: Changes for v4.7-rc1
Two small changes, one getting rid of the bogus gamma table size and
 another removing Terje from the MAINTAINERS file since he no longer does
 any work on host1x or display.
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Merge tag 'drm/tegra/for-4.7-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

drm/tegra: Changes for v4.7-rc1

Two small changes, one getting rid of the bogus gamma table size and
another removing Terje from the MAINTAINERS file since he no longer does
any work on host1x or display.

* tag 'drm/tegra/for-4.7-rc1' of git://anongit.freedesktop.org/tegra/linux:
  MAINTAINERS: Remove Terje Bergström as Tegra DRM maintainer
  drm/tegra: Don't set a gamma table size
2016-05-12 11:15:18 +10:00
Daniel Vetter 1ddbdbd6e9 drm/tegra: Use lockless gem BO free callback
No dev->struct_mutex anywhere to be seen.

Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Terje Bergström <tbergstrom@nvidia.com>
Cc: linux-tegra@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1461691808-12414-28-git-send-email-daniel.vetter@ffwll.ch
2016-05-11 09:35:02 +02:00
Maarten Lankhorst 2dacdd70a7 drm/tegra: Rename async to nonblock.
The async name is deprecated and should be changed to nonblocking.

Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: "Terje Bergström" <tbergstrom@nvidia.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1461679905-30177-10-git-send-email-maarten.lankhorst@linux.intel.com
2016-05-02 16:37:14 +02:00
Dave Airlie 747a598ffa drm/mode: introduce wrapper to read framebuffer refcount.
Avoids drivers knowing where the kref is stored.

[airlied: add kerneldoc]
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-04-22 10:33:53 +10:00
Jon Hunter 70293ed09d soc/tegra: pmc: Change powergate and rail IDs to be an unsigned type
The Tegra powergate and rail IDs are always positive values and so change
the type to be unsigned and remove the tests to see if the ID is less
than zero. Update the Tegra DC powergate type to be an unsigned as well.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-04-05 15:22:47 +02:00
Daniel Vetter 3a9b33c604 drm/tegra: Don't set a gamma table size
Tegra doesn't have any functions to set gamma tables, so this is
completely defunct.

Not nice to lie to userspace, so let's stop!

Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-03-31 12:30:12 +02:00
Linus Torvalds 266c73b777 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
 "This is the main drm pull request for 4.6 kernel.

  Overall the coolest thing here for me is the nouveau maxwell signed
  firmware support from NVidia, it's taken a long while to extract this
  from them.

  I also wish the ARM vendors just designed one set of display IP, ARM
  display block proliferation is definitely increasing.

  Core:
     - drm_event cleanups
     - Internal API cleanup making mode_fixup optional.
     - Apple GMUX vga switcheroo support.
     - DP AUX testing interface

  Panel:
     - Refactoring of DSI core for use over more transports.

  New driver:
     - ARM hdlcd driver

  i915:
     - FBC/PSR (framebuffer compression, panel self refresh) enabled by default.
     - Ongoing atomic display support work
     - Ongoing runtime PM work
     - Pixel clock limit checks
     - VBT DSI description support
     - GEM fixes
     - GuC firmware scheduler enhancements

  amdkfd:
     - Deferred probing fixes to avoid make file or link ordering.

  amdgpu/radeon:
     - ACP support for i2s audio support.
     - Command Submission/GPU scheduler/GPUVM optimisations
     - Initial GPU reset support for amdgpu

  vmwgfx:
     - Support for DX10 gen mipmaps
     - Pageflipping and other fixes.

  exynos:
     - Exynos5420 SoC support for FIMD
     - Exynos5422 SoC support for MIPI-DSI

  nouveau:
     - GM20x secure boot support - adds acceleration for Maxwell GPUs.
     - GM200 support
     - GM20B clock driver support
     - Power sensors work

  etnaviv:
     - Correctness fixes for GPU cache flushing
     - Better support for i.MX6 systems.

  imx-drm:
     - VBlank IRQ support
     - Fence support
     - OF endpoint support

  msm:
     - HDMI support for 8996 (snapdragon 820)
     - Adreno 430 support
     - Timestamp queries support

  virtio-gpu:
     - Fixes for Android support.

  rockchip:
     - Add support for Innosilicion HDMI

  rcar-du:
     - Support for 4 crtcs
     - R8A7795 support
     - RCar Gen 3 support

  omapdrm:
     - HDMI interlace output support
     - dma-buf import support
     - Refactoring to remove a lot of legacy code.

  tilcdc:
     - Rewrite of pageflipping code
     - dma-buf support
     - pinctrl support

  vc4:
     - HDMI modesetting bug fixes
     - Significant 3D performance improvement.

  fsl-dcu (FreeScale):
     - Lots of fixes

  tegra:
     - Two small fixes

  sti:
     - Atomic support for planes
     - Improved HDMI support"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (1063 commits)
  drm/amdgpu: release_pages requires linux/pagemap.h
  drm/sti: restore mode_fixup callback
  drm/amdgpu/gfx7: add MTYPE definition
  drm/amdgpu: removing BO_VAs shouldn't be interruptible
  drm/amd/powerplay: show uvd/vce power gate enablement for tonga.
  drm/amd/powerplay: show uvd/vce power gate info for fiji
  drm/amdgpu: use sched fence if possible
  drm/amdgpu: move ib.fence to job.fence
  drm/amdgpu: give a fence param to ib_free
  drm/amdgpu: include the right version of gmc header files for iceland
  drm/radeon: fix indentation.
  drm/amd/powerplay: add uvd/vce dpm enabling flag to fix the performance issue for CZ
  drm/amdgpu: switch back to 32bit hw fences v2
  drm/amdgpu: remove amdgpu_fence_is_signaled
  drm/amdgpu: drop the extra fence range check v2
  drm/amdgpu: signal fences directly in amdgpu_fence_process
  drm/amdgpu: cleanup amdgpu_fence_wait_empty v2
  drm/amdgpu: keep all fences in an RCU protected array v2
  drm/amdgpu: add number of hardware submissions to amdgpu_fence_driver_init_ring
  drm/amdgpu: RCU protected amd_sched_fence_release
  ...
2016-03-21 13:48:00 -07:00
Luis R. Rodriguez f6e45661f9 dma, mm/pat: Rename dma_*_writecombine() to dma_*_wc()
Rename dma_*_writecombine() to dma_*_wc(), so that the naming
is coherent across the various write-combining APIs. Keep the
old names for compatibility for a while, these can be removed
at a later time. A guard is left to enable backporting of the
rename, and later remove of the old mapping defines seemlessly.

Build tested successfully with allmodconfig.

The following Coccinelle SmPL patch was used for this simple
transformation:

@ rename_dma_alloc_writecombine @
expression dev, size, dma_addr, gfp;
@@

-dma_alloc_writecombine(dev, size, dma_addr, gfp)
+dma_alloc_wc(dev, size, dma_addr, gfp)

@ rename_dma_free_writecombine @
expression dev, size, cpu_addr, dma_addr;
@@

-dma_free_writecombine(dev, size, cpu_addr, dma_addr)
+dma_free_wc(dev, size, cpu_addr, dma_addr)

@ rename_dma_mmap_writecombine @
expression dev, vma, cpu_addr, dma_addr, size;
@@

-dma_mmap_writecombine(dev, vma, cpu_addr, dma_addr, size)
+dma_mmap_wc(dev, vma, cpu_addr, dma_addr, size)

We also keep the old names as compatibility helpers, and
guard against their definition to make backporting easier.

Generated-by: Coccinelle SmPL
Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: airlied@linux.ie
Cc: akpm@linux-foundation.org
Cc: benh@kernel.crashing.org
Cc: bhelgaas@google.com
Cc: bp@suse.de
Cc: dan.j.williams@intel.com
Cc: daniel.vetter@ffwll.ch
Cc: dhowells@redhat.com
Cc: julia.lawall@lip6.fr
Cc: konrad.wilk@oracle.com
Cc: linux-fbdev@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Cc: luto@amacapital.net
Cc: mst@redhat.com
Cc: tomi.valkeinen@ti.com
Cc: toshi.kani@hp.com
Cc: vinod.koul@intel.com
Cc: xen-devel@lists.xensource.com
Link: http://lkml.kernel.org/r/1453516462-4844-1-git-send-email-mcgrof@do-not-panic.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-03-09 14:57:51 +01:00
Dave Airlie 10c1b6183a drm/tegra: drop unused variable.
Fixes: 0417d424a (drm/tegra: Stop cancelling page flip events)

Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-02-09 11:17:37 +10:00
Daniel Vetter 0417d424ac drm/tegra: Stop cancelling page flip events
The core takes care of that now.

v2: Fixup misplaced hunk.

Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Terje Bergström <tbergstrom@nvidia.com>
Acked-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1453756616-28942-12-git-send-email-daniel.vetter@ffwll.ch
2016-02-08 09:55:52 +01:00
Dave Airlie 28f03607bb Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next
Since your main drm-next pull isn't out of the door yet I figured I might
as well flush out drm-misc instead of delaying for 4.6. It's really just
random stuff all over, biggest thing probably connector_mask tracking from
Maarten.

* tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel: (24 commits)
  drm/fb_cma_helper: Remove implicit call to disable_unused_functions
  drm/sysfs: use kobj_to_dev()
  drm/i915: Init power domains early in driver load
  drm: Do not set connector->encoder in drivers
  apple-gmux: Add initial documentation
  drm: move MODULE_PARM_DESC to other file
  drm/edid: index CEA/HDMI mode tables using the VIC
  drm/atomic: Remove drm_atomic_connectors_for_crtc.
  drm/i915: Update connector_mask during readout, v2.
  drm: Remove opencoded drm_gem_object_release_handle()
  drm: Do not set outparam on error during GEM handle allocation
  drm/docs: more leftovers from the big vtable documentation pile
  drm/atomic-helper: Reject legacy flips on a disabled pipe
  drm/atomic: add connector mask to drm_crtc_state.
  drm/tegra: Use __drm_atomic_helper_reset_connector for subclassing connector state, v2.
  drm/atomic: Add __drm_atomic_helper_connector_reset, v2.
  drm/i915: Set connector_state->connector using the helper.
  drm: Use a normal idr allocation for the obj->name
  drm: Only bump object-reference count when adding first handle
  drm: Balance error path for GEM handle allocation
  ...
2016-01-18 07:01:16 +10:00
Maarten Lankhorst 5459a2ad9d drm/tegra: Use __drm_atomic_helper_reset_connector for subclassing connector state, v2.
Changes since v1:
- Do not reset if state allocation fails.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Thierry Reding <treding@nvidia.com> #irc
Link: http://patchwork.freedesktop.org/patch/msgid/1451908400-25147-3-git-send-email-maarten.lankhorst@linux.intel.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2016-01-05 09:43:26 +01:00
Dave Airlie 45ad5ccfa9 Merge tag 'topic/drm-misc-2015-12-18' of git://anongit.freedesktop.org/drm-intel into drm-next
Seems I lied in my last drm-misc pull request and suddenly there's a big
pile of random stuff. Boris dug out Thierry's drm-trivial branch and
resubmitted everything since that branch didn't really work out.

On top of that Nicolas' changes to drm_dev_set_unique - this might
conflict with new driver pulls (I double checked and current drm-next
should be fine), so please beware. The -next/-fixes conflict in vmwgfx
will change slightly with this here too.

* tag 'topic/drm-misc-2015-12-18' of git://anongit.freedesktop.org/drm-intel: (36 commits)
  drm: use dev_name as default unique name in drm_dev_alloc()
  drm: make drm_dev_set_unique() not use a format string
  drm/vmwgfx: Constify function pointer structs
  drm/udl: Constify function pointer structs
  drm/tegra: Constify function pointer structs
  drm/rockchip: Constify function pointer structs
  drm/nouveau: Constify function pointer structs
  drm/mgag200: Constify function pointer structs
  drm/imx: Constify function pointer structs
  drm/i2c/sil164: Constify function pointer structs
  drm/i2c/adv7511: Constify function pointer structs
  drm/exynos: Constify function pointer structs
  drm/cirrus: Constify function pointer structs
  drm/i2c/ch7006: Constify function pointer structs
  drm/bridge/nxp-ptn3460: Constify function pointer structs
  drm/bridge/dw_hdmi: Constify function pointer structs
  drm/bochs: Constify function pointer structs
  drm/atmel-hlcdc: Constify function pointer structs
  drm/armada: Constify function pointer structs
  drm: Constify drm_encoder_slave_funcs
  ...
2015-12-19 11:45:31 +10:00
Dave Airlie 9a1123e894 drm/tegra: Changes for v4.5-rc1
This adds support for the version of host1x found on Tegra210 SoCs. It
 also makes use of the new atomic suspend/resume functionality to bring
 this feature to Tegra.
 
 Other than that it's mostly small fixes and cleanups, with some prep-
 work for things that will hopefully get merged for the next release.
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Merge tag 'drm/tegra/for-4.5-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

drm/tegra: Changes for v4.5-rc1

This adds support for the version of host1x found on Tegra210 SoCs. It
also makes use of the new atomic suspend/resume functionality to bring
this feature to Tegra.

Other than that it's mostly small fixes and cleanups, with some prep-
work for things that will hopefully get merged for the next release.

* tag 'drm/tegra/for-4.5-rc1' of git://anongit.freedesktop.org/tegra/linux:
  drm/tegra: Advertise DRIVER_ATOMIC
  drm/tegra: Use DRIVER level for IOMMU aperture message
  drm/tegra: checking for IS_ERR() instead of NULL
  drm/tegra: dc: Add missing of_node_put()
  drm/tegra: Implement subsystem-level suspend/resume
  drm/tegra: sor: Remove unnecessary conditional
  drm/tegra: sor: Operate on struct drm_dp_aux *
  drm/tegra: Use drm_gem_object_unreference_unlocked()
  drm/tegra: Don't take dev->struct_mutex in mmap offset ioctl
  drm/tegra: Use unlocked gem unreferencing
  drm/tegra: Use new multi-driver module helpers
  gpu: host1x: Add Tegra210 support
  gpu: host1x: Remove core driver on unregister
  gpu: host1x: Use platform_register/unregister_drivers()
2015-12-17 08:38:57 +10:00
Nicolas Iooss e112e593b2 drm: use dev_name as default unique name in drm_dev_alloc()
The following code pattern exists in some DRM drivers:

    ddev = drm_dev_alloc(&driver, parent_dev);
    drm_dev_set_unique(ddev, dev_name(parent_dev));

(Sometimes dev_name(ddev->dev) is used, which is the same.)

As suggested in
http://lists.freedesktop.org/archives/dri-devel/2015-December/096441.html,
the unique name of a new DRM device can be set as dev_name(parent_dev)
when parent_dev is not NULL (vgem is a special case).

Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-12-15 13:56:06 +01:00
Ville Syrjälä 4ecae78558 drm/tegra: Constify function pointer structs
Moves a bunch of junk to .rodata from .data.

 drivers/gpu/drm/tegra/tegra-drm.ko:
-.rodata                     13672
+.rodata                     13684
-.data                        1108
+.data                        1096

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1450178476-26284-26-git-send-email-boris.brezillon@free-electrons.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-12-15 13:48:28 +01:00
Thierry Reding ad906599c1 drm/tegra: Advertise DRIVER_ATOMIC
The driver has supported atomic mode-setting for quite a while. It's
time to advertise that.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-12-14 15:47:36 +01:00
Thierry Reding d2d8c35818 drm/tegra: Use DRIVER level for IOMMU aperture message
This allows the message to be shown even if core messages are disabled
globally in DRM.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-12-14 15:46:15 +01:00
Dan Carpenter db8b42fbfc drm/tegra: checking for IS_ERR() instead of NULL
The tegra_sor_hdmi_find_settings() function returns NULL on error and
not an ERR_PTR.

Fixes: 459cc2c680 ('drm/tegra: sor: Add HDMI support')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-12-14 14:37:25 +01:00
Julia Lawall cf6b17445d drm/tegra: dc: Add missing of_node_put()
for_each_matching_node() performs an of_node_get() on each iteration, so
a break out of the loop requires an of_node_put().

A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):

// <smpl>
@@
local idexpression n;
expression e;
@@

 for_each_matching_node(n,...) {
   ...
(
   of_node_put(n);
|
   e = n
|
+  of_node_put(n);
?  break;
)
   ...
 }
... when != n
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-12-14 11:40:55 +01:00
Thierry Reding 986c58d162 drm/tegra: Implement subsystem-level suspend/resume
Use the drm_atomic_helper_suspend() and drm_atomic_helper_resume()
helpers to implement subsystem-level suspend/resume.

v2: suspend framebuffer device to avoid concurrency issues
v3: resume fbdev on failure to suspend (Emil Velikov)

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-12-14 10:50:39 +01:00
Thierry Reding 01b9bea0c2 drm/tegra: sor: Remove unnecessary conditional
Checking for sor->aux in eDP specific code is unnecessary because eDP
inherently requires a valid AUX channel.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-12-14 10:50:38 +01:00
Thierry Reding 9542c2376e drm/tegra: sor: Operate on struct drm_dp_aux *
Instead of getting a pointer to the driver-specific wrapper of AUX
channels, use the AUX channel objects directly to avoid hackish casting
between the two types.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-12-14 10:50:37 +01:00
Daniel Vetter a07cdfe538 drm/tegra: Use drm_gem_object_unreference_unlocked()
This only grabs the mutex when really needed, but still has a might-
acquire lockdep check to make sure that's always possible. With this
patch Tegra DRM is officially struct_mutex free, yay!

v2: refernce_unlocked doesn't exist as kbuild spotted.

Cc: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
[treding@nvidia.com: remove unused variables]
Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-12-14 10:50:37 +01:00
Daniel Vetter d849c82fac drm/tegra: Don't take dev->struct_mutex in mmap offset ioctl
Since David Herrmann's mmap vma manager rework we don't need to grab
dev->struct_mutex any more to prevent races when looking up the mmap
offset. Drop it and instead don't forget to use the unref_unlocked
variant (since the drm core still cares).

v2: Finally get rid of the copypasta from another commit in this
commit message. And convert to _unlocked like we need to (Patrik).

Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Reviewed-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-12-14 10:50:36 +01:00
Daniel Vetter 115333042c drm/tegra: Use unlocked gem unreferencing
For drm_gem_object_unreference callers are required to hold
dev->struct_mutex, which these paths don't. Enforcing this requirement
has become a bit more strict with

commit ef4c6270bf
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Thu Oct 15 09:36:25 2015 +0200

    drm/gem: Check locking in drm_gem_object_unreference

Cc: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-12-14 10:50:35 +01:00
Thierry Reding 473112e443 drm/tegra: Use new multi-driver module helpers
Use the new multi-driver module helpers to get rid of some boilerplate
in the module initialization and cleanup functions.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-12-14 10:50:34 +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
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
Archit Taneja b110ef3775 drm/tegra: Remove local fbdev emulation Kconfig option
DRM_TEGRA_FBDEV config is currently used to enable/disable legacy fbdev
emulation for the tegra kms driver.

Remove this local config option and use the top level DRM_FBDEV_EMULATION
config option instead.

Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1445933459-5249-4-git-send-email-architt@codeaurora.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-11-24 11:41:50 +01:00
Linus Torvalds 3e82806b97 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
 "I Was Almost Tempted To Capitalise Every Word, but then I decided I
  couldn't read it myself!

  I've also got one pull request for the sti driver outstanding.  It
  relied on a commit in Greg's tree and I didn't find out in time, that
  commit is in your tree now so I might send that along once this is
  merged.

  I also had the accidental misfortune to have access to a Skylake on my
  desk for a few days, and I've had to encourage Intel to try harder,
  which seems to be happening now.

  Here is the main drm-next pull request for 4.4.

  Highlights:

  New driver:
        vc4 driver for the Rasberry Pi VPU.
        (From Eric Anholt at Broadcom.)

  Core:
        Atomic fbdev support
        Atomic helpers for runtime pm
        dp/aux i2c STATUS_UPDATE handling
        struct_mutex usage cleanups.
        Generic of probing support.

  Documentation:
        Kerneldoc for VGA switcheroo code.
        Rename to gpu instead of drm to reflect scope.

  i915:
        Skylake GuC firmware fixes
        HPD A support
        VBT backlight fallbacks
        Fastboot by default for some systems
        FBC work
        BXT/SKL workarounds
        Skylake deeper sleep state fixes

  amdgpu:
        Enable GPU scheduler by default
        New atombios opcodes
        GPUVM debugging options
        Stoney support.
        Fencing cleanups.

  radeon:
        More efficient CS checking

  nouveau:
        gk20a instance memory handling improvements.
        Improved PGOB detection and GK107 support
        Kepler GDDR5 PLL statbility improvement
        G8x/GT2xx reclock improvements
        new userspace API compatiblity fixes.

  virtio-gpu:
        Add 3D support - qemu 2.5 has it merged for it's gtk backend.

  msm:
        Initial msm88896 (snapdragon 8200)

  exynos:
        HDMI cleanups
        Enable mixer driver byt default
        Add DECON-TV support

  vmwgfx:
        Move to using memremap + fixes.

  rcar-du:
        Add support for R8A7793/4 DU

  armada:
        Remove support for non-component mode
        Improved plane handling
        Power savings while in DPMS off.

  tda998x:
        Remove unused slave encoder support
        Use more HDMI helpers
        Fix EDID read handling

  dwhdmi:
        Interlace video mode support for ipu-v3/dw_hdmi
        Hotplug state fixes
        Audio driver integration

  imx:
        More color formats support.

  tegra:
        Minor fixes/improvements"

[ Merge fixup: remove unused variable 'dev' that had all uses removed in
  commit 4e270f088011: "drm/gem: Drop struct_mutex requirement from
  drm_gem_mmap_obj" ]

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (764 commits)
  drm/vmwgfx: Relax irq locking somewhat
  drm/vmwgfx: Properly flush cursor updates and page-flips
  drm/i915/skl: disable display side power well support for now
  drm/i915: Extend DSL readout fix to BDW and SKL.
  drm/i915: Do graphics device reset under forcewake
  drm/i915: Skip fence installation for objects with rotated views (v4)
  vga_switcheroo: Drop client power state VGA_SWITCHEROO_INIT
  drm/amdgpu: group together common fence implementation
  drm/amdgpu: remove AMDGPU_FENCE_OWNER_MOVE
  drm/amdgpu: remove now unused fence functions
  drm/amdgpu: fix fence fallback check
  drm/amdgpu: fix stoping the scheduler timeout
  drm/amdgpu: cleanup on error in amdgpu_cs_ioctl()
  drm/i915: Fix locking around GuC firmware load
  drm/amdgpu: update Fiji's Golden setting
  drm/amdgpu: update Fiji's rev id
  drm/amdgpu: extract common code in vi_common_early_init
  drm/amd/scheduler: don't oops on failure to load
  drm/amdgpu: don't oops on failure to load (v2)
  drm/amdgpu: don't VT switch on suspend
  ...
2015-11-10 09:33:06 -08:00
Andrew Morton 79211c8ed1 remove abs64()
Switch everything to the new and more capable implementation of abs().
Mainly to give the new abs() a bit of a workout.

Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Dave Airlie 596a1d32bb drm/tegra: Changes for v4.4-rc1
Just a couple of minor fixes and cleanups for this cycle.
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Merge tag 'drm/tegra/for-4.4-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

drm/tegra: Changes for v4.4-rc1

Just a couple of minor fixes and cleanups for this cycle.

* tag 'drm/tegra/for-4.4-rc1' of git://anongit.freedesktop.org/tegra/linux:
  drm/tegra: dc: Request/free syncpoint at init/exit
  drm/tegra: fb: Remove gratuituous blank line
  gpu: host1x: Fix MLOCK's debug info
2015-11-05 11:07:03 +10:00
Thierry Reding 2bcdcbfae2 drm/tegra: dc: Request/free syncpoint at init/exit
syncpoints are resources provided by host1x and their lifetime is tied
to the host1x device. They are not properly reference counted either, so
removing the host1x device before any of its clients causes a use-after-
free error. Adding proper reference counting would be a major enterprise
so work around it for now by requesting and freeing the syncpoint at
init and exit time, respectively. The host1x device is guaranteed to be
around at this point.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-10-30 18:40:52 +01:00
Thierry Reding c8a8067f7d drm/tegra: fb: Remove gratuituous blank line
This was introduced by mistake in commit 0f7d9052fb ("drm/tegra: Use
new drm_fb_helper functions"). Remove it.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-10-30 16:54:41 +01:00
Daniel Vetter f8c47144bf drm/<drivers>: Drop DRM_UNLOCKED from modeset drivers
Just one special case (since i915 lost its ums code, yay):
- radeon: Has slots for the old ums ioctls which don't have
  DRM_UNLOCKED, but all filled with drm_invalid_op. So ok to drop it
  everywhere.

Every other kms driver just has DRM_UNLOCKED for all their ioctls, as
they should.

v2: admgpu happened, include that one too. And i915 lost its UMS
support which means we can change all the i915 ioctls too.

v3: Rebased on top of new vmwgfx DX interface extensions.

v4: Rebase on top of render-node support in exynos.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-10-16 15:50:54 +02:00
Thierry Reding 88e72717c2 drm/irq: Use unsigned int pipe in public API
This continues the pattern started in commit cc1ef118fc ("drm/irq:
Make pipe unsigned and name consistent"). This is applied to the public
APIs and driver callbacks, so pretty much all drivers need to be updated
to match the new prototypes.

Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Jianwei Wang <jianwei.wang.chn@gmail.com>
Cc: Alison Wang <alison.wang@freescale.com>
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: David Airlie <airlied@linux.ie>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Mark Yao <mark.yao@rock-chips.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-10-06 12:57:47 +02:00
Ville Syrjälä f993406182 drm/tegra: Handle I2C_WRITE_STATUS_UPDATE for address only writes
A address-only I2C_WRITE can't be replied with a short i2c ack, but I
suppose it could be replied with an i2c defer. So the code should be
prepared for an address-only I2C_WRITE_STATUS_UPDATE.

Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: "Terje Bergström" <tbergstrom@nvidia.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-09-08 20:15:42 +02:00
Ville Syrjälä 2b712be72f drm/dp: s/I2C_STATUS/I2C_WRITE_STATUS_UPDATE/
Rename the I2C_STATUS request to I2C_WRITE_STATUS_UPDATE to match the
spec.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-09-08 20:12:38 +02:00
Daniel Vetter aef9dbb8f7 drm/atomic-helper: Add option to update planes only on active crtc
With drivers supporting runtime pm it's generally not a good idea to
touch the hardware when it's off. Add an option to the commit_planes
helper to support this case.

Note that the helpers already add all planes on a crtc when a modeset
happens, hence plane updates will not be lost if drivers set this to
true.

v2: Check for NULL state->crtc before chasing the pointer. Also check
both old and new crtc if there's a switch. Finally just outright
disallow switching crtcs for a plane if the plane is in active use, on
most hardware that doesn't make sense.

v3: Since commit_planes(active_only = true) is for enabling things
only after all the crtc are on we should only look at the new crtc to
decide whether to call the plane hooks - if the current CRTC isn't on
then skip. If the old crtc (when moving a plane) went down then the
plane should have been disabled as part of the pipe shutdown work
already. For which there's currently no helper really unfortunately.
Also move the check for wether a plane gets a new CRTC assigned while
still in active use out of this patch.

v4: Rebase over exynos changes.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-09-08 13:49:08 +02:00
Maarten Lankhorst 844f9111f6 drm/atomic: Make prepare_fb/cleanup_fb only take state, v3.
This removes the need to separately track fb changes i915.
That will be done as a separate commit, however.

Changes since v1:
- Add dri-devel to cc.
- Fix a check in intel's prepare and cleanup fb to take rotation
  into account.
Changes since v2:
- Split out i915 changes to a separate commit.

Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
[danvet: Squash in msm fixup from Maarten.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-09-08 13:45:54 +02:00
Dave Airlie bef2c7bd57 drm/tegra: Changes for v4.3-rc1
There are a bunch of non-critical fixes here that I've collected over
 the past few months, but the biggest part is Tegra210 support, in the
 DC, DSI and SOR/HDMI drivers.
 
 Also this finally restores DPMS with atomic mode-setting, something
 that has been broken since the conversion and which I had originally
 expected to take far less longer to fix.
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Merge tag 'drm/tegra/for-4.3-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

drm/tegra: Changes for v4.3-rc1

There are a bunch of non-critical fixes here that I've collected over
the past few months, but the biggest part is Tegra210 support, in the
DC, DSI and SOR/HDMI drivers.

Also this finally restores DPMS with atomic mode-setting, something
that has been broken since the conversion and which I had originally
expected to take far less longer to fix.

* tag 'drm/tegra/for-4.3-rc1' of git://anongit.freedesktop.org/tegra/linux: (41 commits)
  drm/tegra: sor: Add HDMI support
  drm/tegra: sor: Add Tegra210 eDP support
  drm/tegra: dc: Implement atomic DPMS
  drm/tegra: sor: Restore DPMS
  drm/tegra: dsi: Restore DPMS
  drm/tegra: hdmi: Restore DPMS
  drm/tegra: rgb: Restore DPMS
  drm/tegra: sor: Use DRM debugfs infrastructure for CRC
  drm/tegra: sor: Write correct head state registers
  drm/tegra: sor: Constify display mode
  drm/tegra: sor: Reset the correct debugfs fields
  drm/tegra: sor: Set minor after debugfs initialization
  drm/tegra: sor: Provide error messages in probe
  drm/tegra: sor: Rename registers for consistency
  drm/tegra: dpaux: Disable interrupt when detached
  drm/tegra: dpaux: Configure pads as I2C by default
  drm/tegra: dpaux: Provide error message in probe
  drm/tegra: dsi: Add Tegra210 support
  drm/tegra: dsi: Add Tegra132 support
  drm/tegra: dsi: Add Tegra124 support
  ...
2015-08-17 15:52:39 +10:00
Thierry Reding 459cc2c680 drm/tegra: sor: Add HDMI support
The SOR1 introduced on Tegra210 supports HDMI 2.0 and DisplayPort. Add
HDMI support and name the debugfs node after the type of SOR. The SOR
introduced with Tegra124 is known simply as "sor", whereas the
additional SOR found on Tegra210 is known as "sor1".

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:49:37 +02:00
Thierry Reding 3309ac8362 drm/tegra: sor: Add Tegra210 eDP support
The SOR found on Tegra210 is very similar to the version found on
Tegra124, except that it no longer supports LVDS.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:49:36 +02:00
Thierry Reding 003fc84877 drm/tegra: dc: Implement atomic DPMS
Move all code into the new canonical ->disable() and ->enable() helper
callbacks so that they play extra nice with atomic DPMS.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:49:36 +02:00
Thierry Reding 850bab4480 drm/tegra: sor: Restore DPMS
In order to restore DPMS with atomic mode-setting, move all code from
the ->mode_set() callback into ->enable(). At the same time, rename the
->prepare() callback to ->disable() to use the names preferred by atomic
mode-setting. This simplifies the calling sequence and will allow DPMS
to use runtime PM in subsequent patches.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:49:35 +02:00
Thierry Reding 171e2e6dd9 drm/tegra: dsi: Restore DPMS
In order to restore DPMS with atomic mode-setting, move all code from
the ->mode_set() callback into ->enable(). At the same time, rename the
->prepare() callback to ->disable() to use the names preferred by atomic
mode-setting. This simplifies the calling sequence and will allow DPMS
to use runtime PM in subsequent patches.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:49:23 +02:00
Thierry Reding 29871b21c4 drm/tegra: hdmi: Restore DPMS
In order to restore DPMS with atomic mode-setting, move all code from
the ->mode_set() callback into ->enable(). At the same time, rename the
->prepare() callback to ->disable() to use the names preferred by atomic
mode-setting. This simplifies the calling sequence and will allow DPMS
code to use runtime PM in subsequent patches.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:49:11 +02:00
Thierry Reding 32c3dee11e drm/tegra: rgb: Restore DPMS
In order to restore DPMS with atomic mode-setting, move all code from
the ->mode_set() callback into ->enable(). At the same time, rename the
->prepare() callback to ->disable() to use the names preferred by atomic
mode-setting. This simplifies the calling sequence and will allow DPMS
code to use runtime PM in subsequent patches.

While at it, remove the enabled field that hasn't been used since the
demidlayering of the output drivers done in preparation for the atomic
mode-setting conversion.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:48:54 +02:00
Thierry Reding 530239a8b8 drm/tegra: sor: Use DRM debugfs infrastructure for CRC
Instead of duplicating most of the code to set up a debugfs file, use
the existing DRM core debugfs infrastructure instead.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:47:57 +02:00
Thierry Reding 51511d05de drm/tegra: sor: Write correct head state registers
The head state registers are per head, so they must be properly indexed.
This has worked fine so far because all boards with eDP use it as the
primary output, so it is very likely to end up attached to head 0.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:47:56 +02:00
Thierry Reding 8044449556 drm/tegra: sor: Constify display mode
The data structure is always only read, never written, and can hence be
referred to by a const pointer.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:47:56 +02:00
Thierry Reding 066d30f8c7 drm/tegra: sor: Reset the correct debugfs fields
When tearing down debugfs support, make sure to reset the fields to NULL
in the correct order, otherwise the debugfs root will not be properly
removed.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:47:55 +02:00
Thierry Reding 3ff1f22c88 drm/tegra: sor: Set minor after debugfs initialization
The DRM minor is needed to teardown debugfs, so it needs to be tracked
to prevent a crash on driver removal.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:47:53 +02:00
Thierry Reding 4dbdc740c4 drm/tegra: sor: Provide error messages in probe
When probing the SOR device fails, output proper error messages to help
diagnose the cause of the failure.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:47:51 +02:00
Thierry Reding a9a9e4fd7c drm/tegra: sor: Rename registers for consistency
The TRM lists indexed registers without an underscore to separate name
from index. Use that convention in the driver for consistency.

While at it, rename some of the field names to the names used in the
TRM.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:47:50 +02:00
Thierry Reding 9e532b3ad9 drm/tegra: dpaux: Disable interrupt when detached
When the DPAUX isn't attached to an SOR the interrupts are not useful.
This also prevents a race that could potentially cause a crash on driver
removal.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:47:49 +02:00
Thierry Reding 3227166c3b drm/tegra: dpaux: Configure pads as I2C by default
The DPAUX code paths already configure the pads in AUX mode, but there
is no way to reconfigure them in I2C mode for HDMI (the DPAUX module is
unused in that case). Enabling the pads in I2C mode by default is the
quickest way to support HDMI. Eventually this may need an explicit call
in the user drivers.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:47:47 +02:00
Thierry Reding 08f580ef2f drm/tegra: dpaux: Provide error message in probe
When probing the dpaux device fails, output proper error messages to
help diagnose the cause of the failure.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:47:46 +02:00
Thierry Reding ddfb406b2f drm/tegra: dsi: Add Tegra210 support
The DSI host controller hasn't changed from Tegra132 to Tegra210, but
different characterization parameters may be required.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:47:45 +02:00
Thierry Reding c06c793084 drm/tegra: dsi: Add Tegra132 support
The DSI host controller hasn't changed from Tegra124 to Tegra132, but
different characterization parameters may be required.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:47:44 +02:00
Thierry Reding 7d3385875b drm/tegra: dsi: Add Tegra124 support
The DSI host controller hasn't changed from Tegra114 to Tegra124, but
different characterization parameters may be required.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:47:44 +02:00
Thierry Reding b8be0bdbd5 drm/tegra: dsi: Use proper back-porch for non-sync video mode
In video modes without sync pulses, the horizontal back-porch needs to
include the horizontal sync width.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-08-13 13:47:44 +02:00