Commit Graph

176 Commits

Author SHA1 Message Date
Jeykumar Sankaran
a802ee99c4 drm/msm/dpu: handle failures while initializing displays
Bail out KMS hw init on display initialization failures with
proper error logging.

changes in v3:
    - introduced in the series
changes in v4:
    - avoid duplicate return on errors (Sean Paul)
    - avoid spamming errors on failures (Jordon Crouse)

Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
2019-02-01 10:35:55 -05:00
Stephen Boyd
070e64dc1b drm/msm/dpu: Convert to a chained irq chip
Devices that make up DPU, i.e. graphics card, request their interrupts
from this "virtual" interrupt chip. The interrupt chip builds upon a GIC
SPI interrupt that raises high when any of the interrupts in the DPU's
irq status register are triggered. From the kernel's perspective this is
a chained irq chip, so requesting a flow handler for the GIC SPI and
then calling generic IRQ handling code from that irq handler is not
completely proper. It's better to convert this to a chained irq so that
the GIC SPI irq doesn't appear in /proc/interrupts, can't have CPU
affinity changed, and won't be accounted for with irq stats. Doing this
also silences a recursive lockdep warning because we can specify a
different lock class for the chained interrupts, silencing a warning
that is easy to see with 'threadirqs' on the kernel commandline.

 WARNING: inconsistent lock state
 4.19.10 #76 Tainted: G        W
 --------------------------------
 inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
 irq/40-dpu_mdss/203 [HC0[0]:SC0[2]:HE1:SE0] takes:
 0000000053ea9021 (&irq_desc_lock_class){?.-.}, at: handle_level_irq+0x34/0x26c
 {IN-HARDIRQ-W} state was registered at:
   lock_acquire+0x244/0x360
   _raw_spin_lock+0x64/0xa0
   handle_fasteoi_irq+0x54/0x2ec
   generic_handle_irq+0x44/0x5c
   __handle_domain_irq+0x9c/0x11c
   gic_handle_irq+0x208/0x260
   el1_irq+0xb4/0x130
   arch_cpu_idle+0x178/0x3cc
   default_idle_call+0x3c/0x54
   do_idle+0x1a8/0x3dc
   cpu_startup_entry+0x24/0x28
   rest_init+0x240/0x270
   start_kernel+0x5a8/0x6bc
 irq event stamp: 18
 hardirqs last  enabled at (17): [<ffffff9042385e80>] _raw_spin_unlock_irq+0x40/0xc0
 hardirqs last disabled at (16): [<ffffff904237a1f4>] __schedule+0x20c/0x1bbc
 softirqs last  enabled at (0): [<ffffff9040f318d0>] copy_process+0xb50/0x3964
 softirqs last disabled at (18): [<ffffff9041036364>] local_bh_disable+0x8/0x20

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

        CPU0
        ----
   lock(&irq_desc_lock_class);
   <Interrupt>
     lock(&irq_desc_lock_class);

  *** DEADLOCK ***

 no locks held by irq/40-dpu_mdss/203.

 stack backtrace:
 CPU: 0 PID: 203 Comm: irq/40-dpu_mdss Tainted: G        W         4.19.10 #76
 Call trace:
  dump_backtrace+0x0/0x2f8
  show_stack+0x20/0x2c
  __dump_stack+0x20/0x28
  dump_stack+0xcc/0x10c
  mark_lock+0xbe0/0xe24
  __lock_acquire+0x4cc/0x2708
  lock_acquire+0x244/0x360
  _raw_spin_lock+0x64/0xa0
  handle_level_irq+0x34/0x26c
  generic_handle_irq+0x44/0x5c
  dpu_mdss_irq+0x64/0xec
  irq_forced_thread_fn+0x58/0x9c
  irq_thread+0x120/0x1dc
  kthread+0x248/0x260
  ret_from_fork+0x10/0x18
 ------------[ cut here ]------------
 irq 169 handler irq_default_primary_handler+0x0/0x18 enabled interrupts

Cc: Sean Paul <seanpaul@chromium.org>
Cc: Jordan Crouse <jcrouse@codeaurora.org>
Cc: Jayant Shekhar <jshekhar@codeaurora.org>
Cc: Rajesh Yadav <ryadav@codeaurora.org>
Cc: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
2019-02-01 10:35:55 -05:00
Jeykumar Sankaran
7579cb0533 drm/msm/dpu: maintain hw_mdp in kms
hw_mdp block is common for displays. No need
to reserve per display.

changes in v2:
	- use IS_ERR for error checking (Jordan Crouse)

Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
2019-02-01 10:35:55 -05:00
Jeykumar Sankaran
1a5e177856 drm/msm/dpu: clean up redundant hw type
struct dpu_hw_blk has hw block type info. Remove duplicate
type tracking in struct dpu_rm_hw_blk.

changes in v2:
	- remove redundant type in trace api's (Sean Paul)

Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
2019-02-01 10:35:55 -05:00
Jeykumar Sankaran
ab92182cdd drm/msm/dpu: remove encoder from crtc mixer struct
Not actively used. Clean up the crtc mixer struct.

changes in v2:
	- none

Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
2019-02-01 10:35:55 -05:00
Jeykumar Sankaran
720a221f87 drm/msm/dpu: clean up dpu_rm_check_property_topctl declaration
Definition was removed already. Clean up header declaration.

changes in v2:
	- none

Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
2019-02-01 10:35:54 -05:00
Jeykumar Sankaran
3763f1a551 drm/msm/dpu: remove dev from RM
Not used. Remove from RM.

changes in v2:
	- none

Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
2019-02-01 10:35:54 -05:00
Jeykumar Sankaran
8998010c53 drm/msm/dpu: avoid tracking reservations in RM
RM was equipped with reservation tracking structure RSVP
to cache HW reservation of displays for certain clients
where atomic_checks (atomic commit with TEST_ONLY) for all
the displays are called before their respective atomic_commits.
Since DPU doesn't support the sequence anymore, clean up
the support from RM. Replace rsvp with the corresponding
encoder id to tag the HW blocks reserved. It prepares DPU
to get rid of RM altogether and track reservations using
private states.

changes in v2:
	- none

Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
2019-02-01 10:35:54 -05:00
Fritz Koenig
918ce5b981 drm/msm/dpu: Correct initialization of modifiers
allow_fb_modifiers needs to be set before drm_universal_plane_init
is called.

Signed-off-by: Fritz Koenig <frkoenig@google.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
2019-02-01 10:35:54 -05:00
Fritz Koenig
3ba25595e2 drm/msm/dpu: Initialize supported modifiers
Pass list of supported modifiers to plane init.

Signed-off-by: Fritz Koenig <frkoenig@google.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
2019-02-01 10:35:54 -05:00
Fritz Koenig
410f119ba7 drm/msm/dpu: Plane helper for modifiers
Filter planes based on the supported modifiers

Signed-off-by: Fritz Koenig <frkoenig@google.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
2019-02-01 10:35:54 -05:00
Fritz Koenig
e6b63a7bb6 drm/msm/dpu: Use simple list for plane format init
Simplify the initilization of a list of formats
by passing the list in directly instead of copying
it from one structure to another.

Signed-off-by: Fritz Koenig <frkoenig@google.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
2019-02-01 10:35:54 -05:00
Fritz Koenig
6de75d5567 drm/msm/dpu: Remove unused format tables.
Signed-off-by: Fritz Koenig <frkoenig@google.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
2019-02-01 10:35:54 -05:00
Arnd Bergmann
22bbd8ef64 drm/msm: avoid unused function warning
drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c:368:13: error: 'dpu_plane_danger_signal_ctrl' defined but not used [-Werror=unused-function]

Fixes: 7b2e7adea7 ("drm/msm/dpu: Make dpu_plane_danger_signal_ctrl void")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2019-01-29 10:17:35 -05:00
Sam Ravnborg
e9eafcb589 drm: move drm_can_sleep() to drm_util.h
Move drm_can_sleep() out of drmP.h to allow users
to get rid of the drmP.h include.

There was no header file that was a good match for this helper function.
So add this to drm_util with the relevant includes.

Add include of drm_util.h to all users.

v2:
- Update comments to use kernel-doc style (Daniel)
- Add FIXME to drm_can_sleep and add note that this
  function should not be used in new code (Daniel)

v3:
- Fix kernel-doc syntax (Daniel)
- Plug drm_util.h into drm-internels.rst (Daniel)

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "David (ChunMing) Zhou" <David1.Zhou@amd.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190112193251.20450-2-sam@ravnborg.org
2019-01-14 10:58:37 +01:00
Maxime Ripard
23d19ba06b
Merge drm/drm-next into drm-misc-next
drm-next has been forwarded to 5.0-rc1, and we need it to apply the damage
helper for dirtyfb series from Noralf Trønnes.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2019-01-11 16:32:10 +01:00
Shayenne Moura
7510a9c68c drm: msm: Cleanup drm_display_mode print str
This patch adjust the print string of drm_display_mode object
to remove drm_mode_object dependency in msm files.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Shayenne Moura <shayenneluzmoura@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/3e2dcd38c964061f245b0ae22186c71da06e9742.1547143069.git.shayenneluzmoura@gmail.com
2019-01-10 21:05:39 +01:00
Dave Airlie
8c1a765bc6 drm-misc-next for 5.1:
UAPI Changes:
 
 Cross-subsystem Changes:
   - Turn dma-buf fence sequence numbers into 64 bit numbers
 
 Core Changes:
   - Move to a common helper for the DP MST hotplug for radeon, i915 and
     amdgpu
   - i2c improvements for drm_dp_mst
   - Removal of drm_syncobj_cb
   - Introduction of an helper to create and attach the TV margin properties
 
 Driver Changes:
   - Improve cache flushes for v3d
   - Reflection support for vc4
   - HDMI overscan support for vc4
   - Add implicit fencing support for rockchip and sun4i
   - Switch to generic fbdev emulation for virtio
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Merge tag 'drm-misc-next-2019-01-07-1' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.1:

UAPI Changes:

Cross-subsystem Changes:
  - Turn dma-buf fence sequence numbers into 64 bit numbers

Core Changes:
  - Move to a common helper for the DP MST hotplug for radeon, i915 and
    amdgpu
  - i2c improvements for drm_dp_mst
  - Removal of drm_syncobj_cb
  - Introduction of an helper to create and attach the TV margin properties

Driver Changes:
  - Improve cache flushes for v3d
  - Reflection support for vc4
  - HDMI overscan support for vc4
  - Add implicit fencing support for rockchip and sun4i
  - Switch to generic fbdev emulation for virtio

Signed-off-by: Dave Airlie <airlied@redhat.com>

[airlied: applied amdgpu merge fixup]
From: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190107180333.amklwycudbsub3s5@flea
2019-01-10 05:58:52 +10:00
Linus Torvalds
4971f090aa drm pull request for 4.21-rc1
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Merge tag 'drm-next-2018-12-14' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "Core:
   - shared fencing staging removal
   - drop transactional atomic helpers and move helpers to new location
   - DP/MST atomic cleanup
   - Leasing cleanups and drop EXPORT_SYMBOL
   - Convert drivers to atomic helpers and generic fbdev.
   - removed deprecated obj_ref/unref in favour of get/put
   - Improve dumb callback documentation
   - MODESET_LOCK_BEGIN/END helpers

  panels:
   - CDTech panels, Banana Pi Panel, DLC1010GIG,
   - Olimex LCD-O-LinuXino, Samsung S6D16D0, Truly NT35597 WQXGA,
   - Himax HX8357D, simulated RTSM AEMv8.
   - GPD Win2 panel
   - AUO G101EVN010

  vgem:
   - render node support

  ttm:
   - move global init out of drivers
   - fix LRU handling for ghost objects
   - Support for simultaneous submissions to multiple engines

  scheduler:
   - timeout/fault handling changes to help GPU recovery
   - helpers for hw with preemption support

  i915:
   - Scaler/Watermark fixes
   - DP MST + powerwell fixes
   - PSR fixes
   - Break long get/put shmemfs pages
   - Icelake fixes
   - Icelake DSI video mode enablement
   - Engine workaround improvements

  amdgpu:
   - freesync support
   - GPU reset enabled on CI, VI, SOC15 dGPUs
   - ABM support in DC
   - KFD support for vega12/polaris12
   - SDMA paging queue on vega
   - More amdkfd code sharing
   - DCC scanout on GFX9
   - DC kerneldoc
   - Updated SMU firmware for GFX8 chips
   - XGMI PSP + hive reset support
   - GPU reset
   - DC trace support
   - Powerplay updates for newer Polaris
   - Cursor plane update fast path
   - kfd dma-buf support

  virtio-gpu:
   - add EDID support

  vmwgfx:
   - pageflip with damage support

  nouveau:
   - Initial Turing TU104/TU106 modesetting support

  msm:
   - a2xx gpu support for apq8060 and imx5
   - a2xx gpummu support
   - mdp4 display support for apq8060
   - DPU fixes and cleanups
   - enhanced profiling support
   - debug object naming interface
   - get_iova/page pinning decoupling

  tegra:
   - Tegra194 host1x, VIC and display support enabled
   - Audio over HDMI for Tegra186 and Tegra194

  exynos:
   - DMA/IOMMU refactoring
   - plane alpha + blend mode support
   - Color format fixes for mixer driver

  rcar-du:
   - R8A7744 and R8A77470 support
   - R8A77965 LVDS support

  imx:
   - fbdev emulation fix
   - multi-tiled scalling fixes
   - SPDX identifiers

  rockchip
   - dw_hdmi support
   - dw-mipi-dsi + dual dsi support
   - mailbox read size fix

  qxl:
   - fix cursor pinning

  vc4:
   - YUV support (scaling + cursor)

  v3d:
   - enable TFU (Texture Formatting Unit)

  mali-dp:
   - add support for linear tiled formats

  sun4i:
   - Display Engine 3 support
   - H6 DE3 mixer 0 support
   - H6 display engine support
   - dw-hdmi support
   - H6 HDMI phy support
   - implicit fence waiting
   - BGRX8888 support

  meson:
   - Overlay plane support
   - implicit fence waiting
   - HDMI 1.4 4k modes

  bridge:
   - i2c fixes for sii902x"

* tag 'drm-next-2018-12-14' of git://anongit.freedesktop.org/drm/drm: (1403 commits)
  drm/amd/display: Add fast path for cursor plane updates
  drm/amdgpu: Enable GPU recovery by default for CI
  drm/amd/display: Fix duplicating scaling/underscan connector state
  drm/amd/display: Fix unintialized max_bpc state values
  Revert "drm/amd/display: Set RMX_ASPECT as default"
  drm/amdgpu: Fix stub function name
  drm/msm/dpu: Fix clock issue after bind failure
  drm/msm/dpu: Clean up dpu_media_info.h static inline functions
  drm/msm/dpu: Further cleanups for static inline functions
  drm/msm/dpu: Cleanup the debugfs functions
  drm/msm/dpu: Remove dpu_irq and unused functions
  drm/msm: Make irq_postinstall optional
  drm/msm/dpu: Cleanup callers of dpu_hw_blk_init
  drm/msm/dpu: Remove unused functions
  drm/msm/dpu: Remove dpu_crtc_is_enabled()
  drm/msm/dpu: Remove dpu_crtc_get_mixer_height
  drm/msm/dpu: Remove dpu_dbg
  drm/msm: dpu: Remove crtc_lock
  drm/msm: dpu: Remove vblank_requested flag from dpu_crtc
  drm/msm: dpu: Separate crtc assignment from vblank enable
  ...
2018-12-25 11:48:26 -08:00
Jayant Shekhar
ba0ede185e drm/msm/dpu: Fix clock issue after bind failure
In case of msm drm bind failure, pm runtime put sync
is called from dsi driver which issues an asynchronous
put on mdss device. Subsequently when dpu_mdss_destroy
is triggered the change will make sure to put the mdss
device in suspend and clearing pending work if not
scheduled.

Signed-off-by: Jayant Shekhar <jshekhar@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:19 -05:00
Jordan Crouse
7adc4a343f drm/msm/dpu: Clean up dpu_media_info.h static inline functions
Do some cleanup in the static inline functions defined in
dpu_media_info.h by cleaning up gotos and unneeded local
variables.

v3: Added spaces between operators per Seal Paul and Sam Ravnborg

Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:19 -05:00
Jordan Crouse
3804a98241 drm/msm/dpu: Further cleanups for static inline functions
Remove more static inline functions that are lightly used and/or
very simple and easy to build into the calling functions.

v3: Fix a nit from Sean Paul
v2: Removed another unused function from dpu_hw_lm.c and add back
dpu_crtc_get_client_type() since there was a question regarding
its usefulness.

Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:18 -05:00
Jordan Crouse
3d688410e6 drm/msm/dpu: Cleanup the debugfs functions
Do some debugfs cleanups from across the DPU driver. The DRM
destroy functions will do a recursive delete on the entire
debugfs node so there is no need to store dentry pointers for
the debugfs files that are persistent for the life of the
driver. This also means that the destroy functions can go
away too.

Also, use standard API functions where applicable instead of
using hand written code.

v3: No changes
v2: Add more code; most of the dpu debugfs files should be
addressed now.

Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:18 -05:00
Jordan Crouse
8fe62a63a8 drm/msm/dpu: Remove dpu_irq and unused functions
dpu_irq.c does some unneeded checks and passes control
to dpu_core_irq.c  The simple functions can be defined
in the same file where we use them and the files and
their associated hangers on can be deleted.

Additionally the postinstall hook isn't used even
in dpu_core_irq.c so zap that entire path.

v3: No changes

Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:18 -05:00
Jordan Crouse
53edf46259 drm/msm/dpu: Cleanup callers of dpu_hw_blk_init
Outside of superfluous parameter checks the dpu_hw_blk_init()
doesn't have any failure paths. Switch it over to be a void
function and we can remove error handling paths in all the functions
that call it. While we're in those functions remove unneeded
initialization for a static variable.

v3: No changes
v2: Removed a cleanup intended for a different patch

Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:17 -05:00
Jordan Crouse
fa79bcc3d1 drm/msm/dpu: Remove unused functions
Remove some unused container_of() helper functions.

v3: No changes
v2: Retained still used helper functions in the name of readability

Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:17 -05:00
Jordan Crouse
49dfe76479 drm/msm/dpu: Remove dpu_crtc_is_enabled()
The static inline function dpu_crtc_enabled() is only called once
and the function that calls it in turn is only called once and
the return value can be easily checked in the calling functions
so collapse everything down.

v3: No changes

Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:16 -05:00
Jordan Crouse
35d600dd92 drm/msm/dpu: Remove dpu_crtc_get_mixer_height
dpu_crtc_get_mixer_height() is only used once and the value it
returns can be easily derived from the calling function.

v3: No changes

Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:16 -05:00
Jordan Crouse
27bc773aa6 drm/msm/dpu: Remove dpu_dbg
The functions in dpu_dbg.c aren't used. The two main dump functions
fail after a lookup from dpu_dbg_base.reg_base_list which turns out
to never be populated and once those are removed the rest of the
file doesn't make any sense.

v3: No changes
v2: Moved some unrelated changes to another patch

Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:16 -05:00
Sean Paul
f9e81b8da3 drm/msm: dpu: Remove crtc_lock
Each time it's called we're holding the crtc modeset lock, so it's
redundant.

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:15 -05:00
Sean Paul
3e46c5df66 drm/msm: dpu: Remove vblank_requested flag from dpu_crtc
It's just for debugfs output, we don't need it

Changes in v2:
- None

Cc: Jeykumar Sankaran <jsanka@codeaurora.org>
Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:15 -05:00
Sean Paul
a796ba2cb3 drm/msm: dpu: Separate crtc assignment from vblank enable
Instead of assigning/clearing the crtc on vblank enable/disable, we can
just assign and clear the crtc on modeset. That allows us to just toggle
the encoder's vblank interrupts on vblank_enable.

So why is this important? Previously the driver was using the legacy
pointers to assign/clear the crtc. Legacy pointers are cleared _after_
disabling the hardware, so the legacy pointer was valid during
vblank_disable, but that's not something we should rely on.

Instead of relying on the core ordering the legacy pointer assignments
just so, we'll assign the crtc in dpu_crtc enable/disable. This is the
only place that mapping can change, so we're covered there.

We're also taking advantage of drm_crtc_vblank_on/off. By using this, we
ensure that vblank_enable/disable can never be called while the crtc is
off (which means the assigned crtc will always be valid). As such, we
don't need to use modeset locks or the crtc_lock in the
vblank_enable/disable routine to be sure state is consistent.

...I think.

Changes in v2:
- Changed crtc check in toggle_vblank to != (Jeykumar)

Cc: Jeykumar Sankaran <jsanka@codeaurora.org>
Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
[dpu_crtc.c change needed to be manually applied b/c of the dpu_crtc_reset change]

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:15 -05:00
Sean Paul
5c6277c1d2 drm/msm: dpu: Don't bother checking ->enabled in dpu_crtc_vblank
The drm_crtc_vblank_on/off calls in enable/disable guarantee that we
won't call this function when crtc is not enabled.

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:14 -05:00
Sean Paul
f7aafc8d53 drm/msm: dpu: Use atomic_disable for dpu_crtc_disable
Matches dpu_crtc_enable and we'll need the old state in a future patch

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:14 -05:00
Sean Paul
e4914867ac drm/msm: dpu: Remove vblank_callback from encoder
The indirection of registering a callback and opaque pointer isn't reall
useful when there's only one callsite. So instead of having the
vblank_cb registration, just give encoder a crtc and let it directly
call the vblank handler.

In a later patch, we'll make use of this further.

Changes in v2:
- None

Cc: Jeykumar Sankaran <jsanka@codeaurora.org>
Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:14 -05:00
Sean Paul
a9d629d71d drm/msm: dpu: Remove crtc_lock from setup_mixers
I think the intention here was to protect the enc->crtc access, but
that's insufficient to avoid enc->crtc changing. Fortunately we're
already holding the modeset lock when this is called (from
atomic_check), so remove the crtc_lock and add a modeset lock check.

While we're at it, use the encoder mask from crtc state instead of
legacy pointer.

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:13 -05:00
Sean Paul
b77d0f0d4e drm/msm: dpu: Move pm_runtime_(get|put) from vblank_enable
There are 4 times that _dpu_crtc_vblank_enable_no_lock() is called:

1- crtc enable
2- crtc disable
3- crtc vblank enable
4- crtc vblank disable

When we enable or disable the crtc, we call drm_crtc_vblank_on and
drm_crtc_vblank_off respectively. That will gate vblank enables and
disables to only being called when the crtc is active. That means that
we can just enable/disable pm runtime in crtc enable/disable. This will
be beneficial in trying to eliminate blocking calls from the vblank call
chain.

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:13 -05:00
Sean Paul
1dfdb0e107 drm/msm: dpu: Add modeset lock checks where applicable
Add modeset lock checks to functions that could be called outside the
core atomic stack.

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:13 -05:00
Sean Paul
4b8c627959 drm/msm: dpu: Stop using encoder->crtc pointer
It's for legacy drivers, for atomic drivers crtc->state->encoder_mask
should be used to map encoder to crtc.

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
[seanpaul resolved conflict with async param of dpu_encoder_kickoff]

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:12 -05:00
Sean Paul
f449aa6e44 drm/msm: dpu: Grab the modeset locks in frame_event
This patch wraps dpu_core_perf_crtc_release_bw() with modeset locks
since it digs into the state objects.

Changes in v2:
- None
Changes in v3:
- Use those nifty new DRM_MODESET_LOCK_ALL_* helpers (Daniel)

Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Jeykumar Sankaran <jsanka@codeaurora.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:12 -05:00
Sean Paul
b01c239922 drm/msm: dpu: Don't drop locks in crtc_vblank_enable
Now that runtime resume is handled in encoder, we don't need to worry
about crtc_lock recursion when calling pm_runtime_(get|put). So drop the
lock drops in _dpu_crtc_vblank_enable_no_lock().

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:12 -05:00
Sean Paul
18a63b3c6f drm/msm: dpu: Move crtc runtime resume to encoder
The crtc runtime resume doesn't actually operate on the crtc, but rather
its encoders. The problem with this is that we need to inspect the crtc
state to get the currently connected encoders. Since runtime resume
isn't guaranteed to be called while holding the modeset locks (although
it sometimes is), this presents a race condition.

Now that we have ->enabled on the virtual encoders, and a lock to
protect it, just call resume on each encoder and only restore the ones
that are enabled.

Changes in v2:
- None

Cc: Jeykumar Sankaran <jsanka@codeaurora.org>
Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:11 -05:00
Sean Paul
fba7427eb5 drm/msm: dpu: Add ->enabled to dpu_encoder_virt
Add a bool to dpu_encoder_virt to track whether the encoder is enabled
or not. Repurpose the enc_lock mutex to ensure that it is consistent
with the hw state.

Changes in v2:
- None

Cc: Jeykumar Sankaran <jsanka@codeaurora.org>
Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:11 -05:00
Sean Paul
585b3f9472 drm/msm: dpu: Fix typo in dpu_encoder
enc_spinlock instead of enc_spin_lock.

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:11 -05:00
Sean Paul
09a2e645b0 drm/msm: dpu: Remove dpu_power_handle
Now that we don't have any event handlers, remove dpu_power_handle!

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:10 -05:00
Sean Paul
aeb7b49a1b drm/msm: dpu: Move DPU_POWER_HANDLE_DBUS_ID to core_perf
It's only used in core_perf, so stick it there (and change the name to
reflect that).

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:10 -05:00
Sean Paul
d53a61e1c0 drm/msm: dpu: Include dpu_io_util.h directly in dpu_kms.h
It's needed for struct dss_module_power, and is currently being pulled
in by dpu_power_handle.h

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:10 -05:00
Sean Paul
b2bb51e835 drm/msm: dpu: Remove power_handle from core_perf
It's unused

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:09 -05:00
Sean Paul
3cf63cd5f8 drm/msm: dpu: Handle crtc pm_runtime_resume() directly
Instead of registering through dpu_power_handle just to get a call on
runtime_resume, call the crtc function directly.

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:09 -05:00
Sean Paul
c24b633003 drm/msm: dpu: Don't use power_event for vbif_init_memtypes
power_events are only used for pm_runtime, and that's all handled in
dpu_kms. So just call vbif_init_memtypes at the correct times.

Changes in v2:
- Removed obsolete comment (Jeykumar)

Cc: Jeykumar Sankaran <jsanka@codeaurora.org>
Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11 13:10:08 -05:00