Commit graph

666 commits

Author SHA1 Message Date
Sam Ravnborg
57e4bc8a48 video: fbdev: sstfb: Updated logging to fix set but not used warnings
Fix set but not used warnings by introducing no_printk variants
for the internal logging system for this driver.

Fix a new warning that popped up now that logging was checked for
correct printf format strings.

A more invasive fix had been to replace all the internal logging with
standard logging primitives - thats for another day.

v2:
  - Update subject (Lee)

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Alex Dewar <alex.dewar90@gmail.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: linux-fbdev@vger.kernel.org
Cc: Lee Jones <lee.jones@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20201128224114.1033617-20-sam@ravnborg.org
2020-11-30 20:04:59 +01:00
Philipp Zabel
58b24a38f0 gpu: ipu-v3: remove unused functions
ipu_mbus_code_to_colorspace, ipu_stride_to_bytes, and
ipu_pixelformat_is_planar are unused. Remove them.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
2020-10-26 10:42:38 +01:00
Mike Rapoport
5c15291223 fbdev: remove mbx framebuffer driver
The only in-tree user for mbx driver for Intel 2700G graphics chip was
cm-x270 platform. Since this platform was removed by the commit
9d3239147d ("ARM: pxa: remove Compulab pxa2xx boards") there is no
point to keep the obsolete framebuffer driver.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200830115524.431278-1-rppt@kernel.org
2020-09-08 13:33:32 +02:00
Gustavo A. R. Silva
451787d3e2 video: Replace zero-length array with flexible-array member
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by
this change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200221160005.GA13552@embeddedor
2020-03-02 16:32:17 +01:00
Krzysztof Kozlowski
914d66312d video: exynos: Rename Exynos to lowercase
Fix up inconsistent usage of upper and lowercase letters in "Exynos"
name.

"EXYNOS" is not an abbreviation but a regular trademarked name.
Therefore it should be written with lowercase letters starting with
capital letter.

The lowercase "Exynos" name is promoted by its manufacturer Samsung
Electronics Co., Ltd., in advertisement materials and on website.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200104152107.11407-16-krzk@kernel.org
2020-01-15 17:31:51 +01:00
Jani Nikula
97ecec8b7f drm/dsi: rename MIPI_DCS_SET_PARTIAL_AREA to MIPI_DCS_SET_PARTIAL_ROWS
The DCS command has been named SET_PARTIAL_ROWS in the DCS spec since
v1.02, for more than a decade. Rename the enumeration to match the spec.

v2: add comment about the rename (David Lechner)

Cc: David Lechner <david@lechnology.com>
Cc: Vandita Kulkarni <vandita.kulkarni@intel.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191028150047.22048-4-jani.nikula@intel.com
2019-11-07 14:59:56 +02:00
Jani Nikula
0676e24f62 drm/dsi: add missing DSI DCS commands
Update from the DCS specification.

Cc: Vandita Kulkarni <vandita.kulkarni@intel.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191028150047.22048-3-jani.nikula@intel.com
2019-11-07 14:59:41 +02:00
Jani Nikula
5586363575 drm/dsi: add missing DSI data types
Add execute queue and compressed pixel stream packet data types for
completeness.

Cc: Vandita Kulkarni <vandita.kulkarni@intel.com>
Reviewed-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191028150047.22048-2-jani.nikula@intel.com
2019-11-07 14:59:11 +02:00
Jani Nikula
e85c659225 drm/dsi: clean up DSI data type definitions
Rename picture parameter set (it's a long packet, not a long write) and
compression mode (it's not a DCS command) enumerations according to the
DSI specification. Order the types according to the spec. Use tabs
instead of spaces for indentation. Use all lower case for hex.

Cc: Vandita Kulkarni <vandita.kulkarni@intel.com>
Reviewed-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191028150047.22048-1-jani.nikula@intel.com
2019-11-07 14:58:16 +02:00
Bartosz Golaszewski
3fca9e0be9 fbdev: da8xx: remove panel_power_ctrl() callback from platform data
There are no more users of panel_power_ctrl(). Remove it from the
driver.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-08-26 17:53:58 +05:30
Linus Torvalds
be8454afc5 drm main pull request for v5.3-rc1 (sans mm changes)
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Merge tag 'drm-next-2019-07-16' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "The biggest thing in this is the AMD Navi GPU support, this again
  contains a bunch of header files that are large. These are the new AMD
  RX5700 GPUs that just recently became available.

  New drivers:
   - ST-Ericsson MCDE driver
   - Ingenic JZ47xx SoC

  UAPI change:
   - HDR source metadata property

  Core:
   - HDR inforframes and EDID parsing
   - drm hdmi infoframe unpacking
   - remove prime sg_table caching into dma-buf
   - New gem vram helpers to reduce driver code
   - Lots of drmP.h removal
   - reservation fencing fix
   - documentation updates
   - drm_fb_helper_connector removed
   - mode name command handler rewrite

  fbcon:
   - Remove the fbcon notifiers

  ttm:
   - forward progress fixes

  dma-buf:
   - make mmap call optional
   - debugfs refcount fixes
   - dma-fence free with pending signals fix
   - each dma-buf gets an inode

  Panels:
   - Lots of additional panel bindings

  amdgpu:
   - initial navi10 support
   - avoid hw reset
   - HDR metadata support
   - new thermal sensors for vega asics
   - RAS fixes
   - use HMM rather than MMU notifier
   - xgmi topology via kfd
   - SR-IOV fixes
   - driver reload fixes
   - DC use a core bpc attribute
   - Aux fixes for DC
   - Bandwidth calc updates for DC
   - Clock handling refactor
   - kfd VEGAM support

  vmwgfx:
   - Coherent memory support changes

  i915:
   - HDR Support
   - HDMI i2c link
   - Icelake multi-segmented gamma support
   - GuC firmware update
   - Mule Creek Canyon PCH support for EHL
   - EHL platform updtes
   - move i915.alpha_support to i915.force_probe
   - runtime PM refactoring
   - VBT parsing refactoring
   - DSI fixes
   - struct mutex dependency reduction
   - GEM code reorg

  mali-dp:
   - Komeda driver features

  msm:
   - dsi vs EPROBE_DEFER fixes
   - msm8998 snapdragon 835 support
   - a540 gpu support
   - mdp5 and dpu interconnect support

  exynos:
   - drmP.h removal

  tegra:
   - misc fixes

  tda998x:
   - audio support improvements
   - pixel repeated mode support
   - quantisation range handling corrections
   - HDMI vendor info fix

  armada:
   - interlace support fix
   - overlay/video plane register handling refactor
   - add gamma support

  rockchip:
   - RX3328 support

  panfrost:
   - expose perf counters via hidden ioctls

  vkms:
   - enumerate CRC sources list

  ast:
   - rework BO handling

  mgag200:
   - rework BO handling

  dw-hdmi:
   - suspend/resume support

  rcar-du:
   - R8A774A1 Soc Support
   - LVDS dual-link mode support
   - Additional formats
   - Misc fixes

  omapdrm:
   - DSI command mode display support

  stm
   - fb modifier support
   - runtime PM support

  sun4i:
   - use vmap ops

  vc4:
   - binner bo binding rework

  v3d:
   - compute shader support
   - resync/sync fixes
   - job management refactoring

  lima:
   - NULL pointer in irq handler fix
   - scheduler default timeout

  virtio:
   - fence seqno support
   - trace events

  bochs:
   - misc fixes

  tc458767:
   - IRQ/HDP handling

  sii902x:
   - HDMI audio support

  atmel-hlcdc:
   - misc fixes

  meson:
   - zpos support"

* tag 'drm-next-2019-07-16' of git://anongit.freedesktop.org/drm/drm: (1815 commits)
  Revert "Merge branch 'vmwgfx-next' of git://people.freedesktop.org/~thomash/linux into drm-next"
  Revert "mm: adjust apply_to_pfn_range interface for dropped token."
  mm: adjust apply_to_pfn_range interface for dropped token.
  drm/amdgpu/navi10: add uclk activity sensor
  drm/amdgpu: properly guard the generic discovery code
  drm/amdgpu: add missing documentation on new module parameters
  drm/amdgpu: don't invalidate caches in RELEASE_MEM, only do the writeback
  drm/amd/display: avoid 64-bit division
  drm/amdgpu/psp11: simplify the ucode register logic
  drm/amdgpu: properly guard DC support in navi code
  drm/amd/powerplay: vega20: fix uninitialized variable use
  drm/amd/display: dcn20: include linux/delay.h
  amdgpu: make pmu support optional
  drm/amd/powerplay: Zero initialize current_rpm in vega20_get_fan_speed_percent
  drm/amd/powerplay: Zero initialize freq in smu_v11_0_get_current_clk_freq
  drm/amd/powerplay: Use memset to initialize metrics structs
  drm/amdgpu/mes10.1: Fix header guard
  drm/amd/powerplay: add temperature sensor support for navi10
  drm/amdgpu: fix scheduler timeout calc
  drm/amdgpu: Prepare for hmm_range_register API change (v2)
  ...
2019-07-15 19:04:27 -07:00
Linus Torvalds
2d41ef5432 fbdev changes for v5.3:
- remove fbdev notifier usage for fbcon (as prep work to clean up the fbcon
   locking), add locking checks in vt/console code and make assorted cleanups
   in fbdev and backlight code (Daniel Vetter)
 
 - add COMPILE_TEST support to atmel_lcdfb, da8xx-fb, gbefb, imxfb, pvr2fb and
   pxa168fb drivers (me)
 
 - fix DMA API abuse in au1200fb and jz4740_fb drivers (Christoph Hellwig)
 
 - add check for new BGRT status field rotation bits in efifb driver (Hans de
   Goede)
 
 - mark expected switch fall-throughs in s3c-fb driver (Gustavo A. R. Silva)
 
 - remove fbdev mxsfb driver in favour of the drm version (Fabio Estevam)
 
 - remove broken rfbi code from omap2fb driver (me)
 
 - misc fixes (Arnd Bergmann, Shobhit Kukreti, Wei Yongjun, me)
 
 - misc cleanups (Gustavo A. R. Silva, Colin Ian King, me)
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Merge tag 'fbdev-v5.3' of git://github.com/bzolnier/linux

Pull fbdev updates from Bartlomiej Zolnierkiewicz:

 - remove fbdev notifier usage for fbcon (as prep work to clean up the
   fbcon locking), add locking checks in vt/console code and make
   assorted cleanups in fbdev and backlight code (Daniel Vetter)

 - add COMPILE_TEST support to atmel_lcdfb, da8xx-fb, gbefb, imxfb,
   pvr2fb and pxa168fb drivers (me)

 - fix DMA API abuse in au1200fb and jz4740_fb drivers (Christoph
   Hellwig)

 - add check for new BGRT status field rotation bits in efifb driver
   (Hans de Goede)

 - mark expected switch fall-throughs in s3c-fb driver (Gustavo A. R.
   Silva)

 - remove fbdev mxsfb driver in favour of the drm version (Fabio
   Estevam)

 - remove broken rfbi code from omap2fb driver (me)

 - misc fixes (Arnd Bergmann, Shobhit Kukreti, Wei Yongjun, me)

 - misc cleanups (Gustavo A. R. Silva, Colin Ian King, me)

* tag 'fbdev-v5.3' of git://github.com/bzolnier/linux: (62 commits)
  video: fbdev: imxfb: fix a typo in imxfb_probe()
  video: fbdev: s3c-fb: Mark expected switch fall-throughs
  video: fbdev: s3c-fb: fix sparse warnings about using incorrect types
  video: fbdev: don't print error message on framebuffer_alloc() failure
  video: fbdev: intelfb: return -ENOMEM on framebuffer_alloc() failure
  video: fbdev: s3c-fb: return -ENOMEM on framebuffer_alloc() failure
  vga_switcheroo: Depend upon fbcon being built-in, if enabled
  video: fbdev: omap2: remove rfbi
  video: fbdev: atmel_lcdfb: remove redundant initialization to variable ret
  video: fbdev-MMP: Use struct_size() in devm_kzalloc()
  video: fbdev: controlfb: fix warnings about comparing pointer to 0
  efifb: BGRT: Add check for new BGRT status field rotation bits
  jz4740_fb: fix DMA API abuse
  video: fbdev: pvr2fb: fix link error for pvr2fb_pci_exit
  video: fbdev: s3c-fb: add COMPILE_TEST support
  video: fbdev: imxfb: fix sparse warnings about using incorrect types
  video: fbdev: pvr2fb: fix build warning when compiling as module
  fbcon: Export fbcon_update_vcs
  backlight: simplify lcd notifier
  staging/olpc_dcon: Add drm conversion to TODO
  ...
2019-07-09 09:55:45 -07:00
Bartlomiej Zolnierkiewicz
76c47323c1 video: fbdev: omap2: remove rfbi
Equivalent of drm's commit aa61321d4c ("drm/omap: remove rfbi").

The RFBI driver has been marked as BROKEN and has not been
included in the kernel build for many years. Just remove it
(it can be trivially brought back from git repository if
ever needed).

Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2019-06-21 15:13:14 +02:00
Thomas Gleixner
d2912cb15b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:55 +02:00
Thomas Gleixner
caab277b1d treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details you should have received a copy of the gnu general
  public license along with this program if not see http www gnu org
  licenses

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 503 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Enrico Weigelt <info@metux.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190602204653.811534538@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:07 +02:00
Steve Longerbeam
f208b26e61 gpu: ipu-v3: ipu-ic: Fully describe colorspace conversions
Only providing the input and output RGB/YUV space to the IC task init
functions is not sufficient. To fully characterize a colorspace
conversion, the Y'CbCr encoding standard, and quantization also
need to be specified.

Define a 'struct ipu_ic_colorspace' that includes all the above.

This allows to actually enforce the fact that the IC:

- can only encode to/from YUV and RGB full range. A follow-up patch will
  remove this restriction.
- can only encode using BT.601 standard. A follow-up patch will add
  Rec.709 encoding support.

The determination of the CSC coefficients based on the input/output
'struct ipu_ic_colorspace' are moved to a new exported function
ipu_ic_calc_csc(), and 'struct ic_csc_params' is exported as
'struct ipu_ic_csc_params'. ipu_ic_calc_csc() fills a 'struct ipu_ic_csc'
with the input/output 'struct ipu_ic_colorspace' and the calculated
'struct ic_csc_params' from those input/output colorspaces.

The functions ipu_ic_task_init(_rsc)() now take a filled 'struct
ipu_ic_csc'.

The existing CSC coefficient tables and ipu_ic_calc_csc() are moved
to a new module ipu-ic-csc.c. This is in preparation for adding more
coefficient tables for limited range quantization and more encoding
standards.

The existing ycbcr2rgb and inverse rgb2ycbcr tables defined the BT.601
Y'CbCr encoding coefficients. The rgb2ycbcr table specifically described
the BT.601 encoding from full range RGB to full range YUV. Table
comments have been added in ipu-ic-csc.c to make this more clear.

The ycbcr2rgb inverse table described encoding YUV limited range to RGB
full range. To be consistent with the rgb2ycbcr table, this table is
converted to YUV full range to RGB full range, and the comments are
expanded in ipu-ic-csc.c.

The ic_csc_rgb2rgb table was just an identity matrix, so it is renamed
'identity' in ipu-ic-csc.c.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
[p.zabel@pengutronix.de: removed a superfluous blank line]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-06-14 15:31:45 +02:00
Thomas Gleixner
55716d2643 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
Based on 1 normalized pattern(s):

  this file is released under the gplv2

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 68 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Armijn Hemel <armijn@tjaldur.nl>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531190114.292346262@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:37:16 +02:00
Thomas Gleixner
42bd2d91f3 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 351
Based on 1 normalized pattern(s):

  this file is subject to the terms and conditions of the gnu general
  public license version 2 as published by the free software
  foundation

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 1 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Armijn Hemel <armijn@tjaldur.nl>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531081035.220801321@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:37:08 +02:00
Thomas Gleixner
4505153954 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details you should have received a copy of the gnu general
  public license along with this program if not write to the free
  software foundation inc 59 temple place suite 330 boston ma 02111
  1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 136 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000436.384967451@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:37:06 +02:00
Thomas Gleixner
c942fddf87 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
Based on 3 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version [author] [kishon] [vijay] [abraham]
  [i] [kishon]@[ti] [com] this program is distributed in the hope that
  it will be useful but without any warranty without even the implied
  warranty of merchantability or fitness for a particular purpose see
  the gnu general public license for more details

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version [author] [graeme] [gregory]
  [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
  [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
  [hk] [hemahk]@[ti] [com] this program is distributed in the hope
  that it will be useful but without any warranty without even the
  implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1105 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:37 -07:00
Thomas Gleixner
1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  59 temple place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00
Thomas Gleixner
2874c5fd28 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:32 -07:00
Thomas Gleixner
5e0f8ad07b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 27
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the named license
  or any later version this program is distributed in the hope that it
  will be useful but without any warranty without even the implied
  warranty of merchantability or fitness for a particular purpose see
  the gnu general public license for more details you should have
  received a copy of the gnu general public license along with this
  program if not write to the free software foundation inc 59 temple
  place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 7 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520170856.731149235@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:27:10 +02:00
Thomas Gleixner
1ccea77e2a treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not see http www gnu org licenses

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details [based]
  [from] [clk] [highbank] [c] you should have received a copy of the
  gnu general public license along with this program if not see http
  www gnu org licenses

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 355 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154041.837383322@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 11:28:45 +02:00
Mikulas Patocka
babc250e27 udlfb: introduce a rendering mutex
Rendering calls may be done simultaneously from the workqueue,
dlfb_ops_write, dlfb_ops_ioctl, dlfb_ops_set_par and dlfb_dpy_deferred_io.
The code is robust enough so that it won't crash on concurrent rendering.

However, concurrent rendering may cause display corruption if the same
pixel is simultaneously being rendered. In order to avoid this corruption,
this patch adds a mutex around the rendering calls.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: Bernie Thompson <bernie@plugable.com>
Cc: Ladislav Michl <ladis@linux-mips.org>
Cc: <stable@vger.kernel.org>
[b.zolnierkie: replace "dlfb:" with "uldfb:" in the patch summary]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2019-04-01 17:46:57 +02:00
Mikulas Patocka
6b11f9d843 udlfb: fix sleeping inside spinlock
If a framebuffer device is used as a console, the rendering calls
(copyarea, fillrect, imageblit) may be done with the console spinlock
held. On udlfb, these function call dlfb_handle_damage that takes a
blocking semaphore before acquiring an URB.

In order to fix the bug, this patch changes the calls copyarea, fillrect
and imageblit to offload USB work to a workqueue.

A side effect of this patch is 3x improvement in console scrolling speed
because the device doesn't have to be updated after each copyarea call.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: Bernie Thompson <bernie@plugable.com>
Cc: Ladislav Michl <ladis@linux-mips.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2019-04-01 17:46:56 +02:00
Linus Torvalds
96a6de1a54 media updates for v5.1-rc1
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Merge tag 'media/v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - remove sensor drivers that got converted from soc_camera

 - remaining soc_camera drivers got moved to staging

 - some documentation cleanups and improvements

 - the imx staging driver now supports imx7

 - the ov9640, mt9m001 and mt9m111 got converted from soc_camera

 - the vim2m driver now does what a m2m convert driver expects to do

 - epoll() fixes on media subsystems

 - several drivers fixes, typos, cleanups and improvements

* tag 'media/v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (346 commits)
  media: dvb/earth-pt1: fix wrong initialization for demod blocks
  media: vim2m: Address some coding style issues
  media: vim2m: don't use BUG()
  media: vim2m: speedup passthrough copy
  media: vim2m: add an horizontal scaler
  media: vim2m: don't accept YUYV anymore as output format
  media: vim2m: add vertical linear scaler
  media: vim2m: better handle cap/out buffers with different sizes
  media: vim2m: use different framesizes for bayer formats
  media: vim2m: add support for VIDIOC_ENUM_FRAMESIZES
  media: vim2m: ensure that width is multiple of two
  media: vim2m: improve debug messages
  media: vim2m: add bayer capture formats
  media: a few more typos at staging, pci, platform, radio and usb
  media: Documentation: fix several typos
  media: staging: fix several typos
  media: include: fix several typos
  media: common: fix several typos
  media: v4l2-core: fix several typos
  media: usb: fix several typos
  ...
2019-03-09 14:45:54 -08:00
Lucas Stach
4bfbd561fc gpu: ipu-v3: prg: add function to get channel configure status
This allows channels using the PRG to check if a requested configuration
update has been applied or is still pending.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
[p.zabel@pengutronix.de: inverted logic: done -> pending]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-02-22 11:58:45 +01:00
Steve Longerbeam
9b5c8d5ffb media: gpu: ipu-v3: Add planar support to interlaced scan
To support interlaced scan with planar formats, cpmem SLUV must
be programmed with the correct chroma line stride. For full and
partial planar 4:2:2 (YUV422P, NV16), chroma line stride must
be doubled. For full and partial planar 4:2:0 (YUV420, YVU420, NV12),
chroma line stride must _not_ be doubled, since a single chroma line
is shared by two luma lines.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-01-16 14:12:20 -05:00
Steve Longerbeam
fc8c723852 media: gpu: ipu-csi: Swap fields according to input/output field types
The function ipu_csi_init_interface() was inverting the F-bit for
NTSC case, in the CCIR_CODE_1/2 registers. The result being that
for NTSC bottom-top field order, the CSI would swap fields and
capture in top-bottom order.

Instead, base field swap on the field order of the input to the CSI,
and the field order of the requested output. If the input/output
fields are sequential but different, swap fields, otherwise do
not swap. This requires passing both the input and output mbus
frame formats to ipu_csi_init_interface().

Move this code to a new private function ipu_csi_set_bt_interlaced_codes()
that programs the CCIR_CODE_1/2 registers for interlaced BT.656 (and
possibly interlaced BT.1120 in the future).

When detecting input video standard from the input frame width/height,
make sure to double height if input field type is alternate, since
in that case input height only includes lines for one field.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-01-16 14:11:42 -05:00
Christoph Manszewski
3b5129b3a7 drm/exynos: fimd: Make pixel blend mode configurable
The fimd hardware supports different blend modes. Add pixel blend mode
property and make it configurable, by modifying the blend equation.

Tested on TRATS2 with Exynos 4412 CPU, on top of linux-next-20181019.

Signed-off-by: Christoph Manszewski <c.manszewski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2018-12-14 15:46:15 +09:00
Christoph Manszewski
6f8ee5c217 drm/exynos: fimd: Make plane alpha configurable
The fimd hardware supports variable plane alpha. Currently planes
are opaque, make this configurable.

Tested on TRATS2 with Exynos 4412 CPU, on top of linux-next-20181019.

Signed-off-by: Christoph Manszewski <c.manszewski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2018-12-14 15:46:15 +09:00
Philipp Zabel
d0cbc93a01 gpu: ipu-v3: ipu-ic: allow to manually set resize coefficients
For tiled scaling, we want to compute the scaling coefficients
externally in such a way that the interpolation overshoots tile
boundaries and samples up to the first pixel of the next tile.
Prepare to override the resizing coefficients from the image
conversion code.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Steve Longerbeam <slongerbeam@gmail.com>
Tested-by: Steve Longerbeam <slongerbeam@gmail.com>
2018-11-05 14:40:06 +01:00
Steve Longerbeam
dec408fd23 gpu: ipu-v3: Add chroma plane offset overrides to ipu_cpmem_set_image()
Allow the caller of ipu_cpmem_set_image() to override the latters
calculation of the chroma plane offsets, by adding override U/V
plane offsets to 'struct ipu_image'.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2018-11-05 14:40:06 +01:00
Mikulas Patocka
68a958a915 udlfb: handle unplug properly
The udlfb driver maintained an open count and cleaned up itself when the
count reached zero. But the console is also counted in the reference count
- so, if the user unplugged the device, the open count would not drop to
zero and the driver stayed loaded with console attached. If the user
re-plugged the adapter, it would create a device /dev/fb1, show green
screen and the access to the console would be lost.

The framebuffer subsystem has reference counting on its own - in order to
fix the unplug bug, we rely the framebuffer reference counting. When the
user unplugs the adapter, we call unregister_framebuffer unconditionally.
unregister_framebuffer will unbind the console, wait until all users stop
using the framebuffer and then call the fb_destroy method. The fb_destroy
cleans up the USB driver.

This patch makes the following changes:
* Drop dlfb->kref and rely on implicit framebuffer reference counting
  instead.
* dlfb_usb_disconnect calls unregister_framebuffer, the rest of driver
  cleanup is done in the function dlfb_ops_destroy. dlfb_ops_destroy will
  be called by the framebuffer subsystem when no processes have the
  framebuffer open or mapped.
* We don't use workqueue during initialization, but initialize directly
  from dlfb_usb_probe. The workqueue could race with dlfb_usb_disconnect
  and this racing would produce various kinds of memory corruption.
* We use usb_get_dev and usb_put_dev to make sure that the USB subsystem
  doesn't free the device under us.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
cc: Dave Airlie <airlied@redhat.com>
Cc: Bernie Thompson <bernie@plugable.com>,
Cc: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2018-10-08 12:57:34 +02:00
Linus Torvalds
06e386a1db fbdev changes for v4.19:
- add support for deferred console takeover, when enabled defers
   fbcon taking over the console from the dummy console until the
   first text is displayed on the console - together with the "quiet"
   kernel commandline option this allows fbcon to still be used
   together with a smooth graphical bootup (Hans de Goede)
 
 - improve console locking debugging code (Thomas Zimmermann)
 
 - copy the ACPI BGRT boot graphics to the framebuffer when deferred
   console takeover support is used in efifb driver (Hans de Goede)
 
 - update udlfb driver - fix lost console when the user unplugs a USB
   adapter, fix the screen corruption issue, fix locking and add some
   performance optimizations (Mikulas Patocka)
 
 - update pxafb driver - fix using uninitialized memory, switch to
   devm_* API, handle initialization errors and add support for
   lcd-supply regulator (Daniel Mack)
 
 - add support for boards booted with a DeviceTree in pxa3xx_gcu
   driver (Daniel Mack)
 
 - rename omap2 module to omap2fb.ko to avoid conflicts with omap1
   driver (Arnd Bergmann)
 
 - enable ACPI-based enumeration for goldfishfb driver (Yu Ning)
 
 - fix goldfishfb driver to make user space Android code use 60 fps
   (Christoffer Dall)
 
 - print big fat warning when nomodeset kernel parameter is used in
   vgacon driver (Lyude Paul)
 
 - remove VLA usage from fsl-diu-fb driver (Kees Cook)
 
 - misc fixes (Julia Lawall, Geert Uytterhoeven, Fredrik Noring,
   Yisheng Xie, Dan Carpenter, Daniel Vetter, Anton Vasilyev, Randy
   Dunlap, Gustavo A. R. Silva, Colin Ian King, Fengguang Wu)
 
 - misc cleanups (Roman Kiryanov, Yisheng Xie, Colin Ian King)
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Merge tag 'fbdev-v4.19' of https://github.com/bzolnier/linux

Pull fbdev updates from Bartlomiej Zolnierkiewicz:
 "Mostly small fixes and cleanups for fb drivers (the biggest updates
  are for udlfb and pxafb drivers). This also adds deferred console
  takeover support to the console code and efifb driver.

  Summary:

   - add support for deferred console takeover, when enabled defers
     fbcon taking over the console from the dummy console until the
     first text is displayed on the console - together with the "quiet"
     kernel commandline option this allows fbcon to still be used
     together with a smooth graphical bootup (Hans de Goede)

   - improve console locking debugging code (Thomas Zimmermann)

   - copy the ACPI BGRT boot graphics to the framebuffer when deferred
     console takeover support is used in efifb driver (Hans de Goede)

   - update udlfb driver - fix lost console when the user unplugs a USB
     adapter, fix the screen corruption issue, fix locking and add some
     performance optimizations (Mikulas Patocka)

   - update pxafb driver - fix using uninitialized memory, switch to
     devm_* API, handle initialization errors and add support for
     lcd-supply regulator (Daniel Mack)

   - add support for boards booted with a DeviceTree in pxa3xx_gcu
     driver (Daniel Mack)

   - rename omap2 module to omap2fb.ko to avoid conflicts with omap1
     driver (Arnd Bergmann)

   - enable ACPI-based enumeration for goldfishfb driver (Yu Ning)

   - fix goldfishfb driver to make user space Android code use 60 fps
     (Christoffer Dall)

   - print big fat warning when nomodeset kernel parameter is used in
     vgacon driver (Lyude Paul)

   - remove VLA usage from fsl-diu-fb driver (Kees Cook)

   - misc fixes (Julia Lawall, Geert Uytterhoeven, Fredrik Noring,
     Yisheng Xie, Dan Carpenter, Daniel Vetter, Anton Vasilyev, Randy
     Dunlap, Gustavo A. R. Silva, Colin Ian King, Fengguang Wu)

   - misc cleanups (Roman Kiryanov, Yisheng Xie, Colin Ian King)"

* tag 'fbdev-v4.19' of https://github.com/bzolnier/linux: (54 commits)
  Documentation/fb: corrections for fbcon.txt
  fbcon: Do not takeover the console from atomic context
  dummycon: Stop exporting dummycon_[un]register_output_notifier
  fbcon: Only defer console takeover if the current console driver is the dummycon
  fbcon: Only allow FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER if fbdev is builtin
  fbdev: omap2: omapfb: fix ifnullfree.cocci warnings
  fbdev: omap2: omapfb: fix bugon.cocci warnings
  fbdev: omap2: omapfb: fix boolreturn.cocci warnings
  fb: amifb: fix build warnings when not builtin
  fbdev/core: Disable console-lock warnings when fb.lockless_register_fb is set
  console: Replace #if 0 with atomic var 'ignore_console_lock_warning'
  udlfb: use spin_lock_irq instead of spin_lock_irqsave
  udlfb: avoid prefetch
  udlfb: optimization - test the backing buffer
  udlfb: allow reallocating the framebuffer
  udlfb: set line_length in dlfb_ops_set_par
  udlfb: handle allocation failure
  udlfb: set optimal write delay
  udlfb: make a local copy of fb_ops
  udlfb: don't switch if we are switching to the same videomode
  ...
2018-08-23 15:44:58 -07:00
Mikulas Patocka
7433914efd udlfb: allow reallocating the framebuffer
This patch changes udlfb so that it may reallocate the framebuffer when
setting higher-resolution mode. If we boot the system without monitor
attached, udlfb creates a framebuffer with the size 800x600. This patch
makes it possible to select higher videomode with the fbset command when
a monitor is attached.

Note that there is no reliable way to prevent the system from touching the
old framebuffer, so we must not free it. We add it to the list
dlfb->deferred_free and free it when the driver is unloaded.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
[b.zolnierkie: sparse fixes]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2018-07-25 15:41:56 +02:00
Mikulas Patocka
bb24153a3f udlfb: set optimal write delay
The default delay 5 jiffies is too much when the kernel is compiled with
HZ=100 - it results in jumpy cursor in Xwindow.

In order to find out the optimal delay, I benchmarked the driver on
1280x720x30fps video. I found out that with HZ=1000, 10ms is acceptable,
but with HZ=250 or HZ=300, we need 4ms, so that the video is played
without any frame skips.

This patch changes the delay to this value.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2018-07-25 15:41:55 +02:00
Mikulas Patocka
2c29cfc3ea udlfb: make a local copy of fb_ops
The defio subsystem overwrites the method fb_osp->mmap. That method is
stored in module's static data - and that means that if we have multiple
diplaylink adapters, they will over write each other's method.

In order to avoid interference between multiple adapters, we copy the
fb_ops structure to a device-local memory.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2018-07-25 15:41:55 +02:00
Mikulas Patocka
564f180737 udlfb: don't switch if we are switching to the same videomode
The udlfb driver reprograms the hardware everytime the user switches the
console, that makes quite unusable when working on the console.

This patch makes the driver remember the videomode we are in and avoid
reprogramming the hardware if we switch to the same videomode.

We mask the "activate" field and the "FB_VMODE_SMOOTH_XPAN" flag when
comparing the videomode, because they cause spurious switches when
switching to and from the Xserver.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2018-07-25 15:41:55 +02:00
Mikulas Patocka
9d0aa601e4 udlfb: fix semaphore value leak
I observed that the performance of the udl fb driver degrades over time.
On a freshly booted machine, it takes 6 seconds to do "ls -la /usr/bin";
after some time of use, the same operation takes 14 seconds.

The reason is that the value of "limit_sem" decays over time.

The udl driver uses a semaphore "limit_set" to specify how many free urbs
are there on dlfb->urbs.list. If the count is zero, the "down" operation
will sleep until some urbs are added to the freelist.

In order to avoid some hypothetical deadlock, the driver will not call
"up" immediately, but it will offload it to a workqueue. The problem is
that if we call "schedule_delayed_work" on the same work item multiple
times, the work item may only be executed once.

This is happening:
* some urb completes
* dlfb_urb_completion adds it to the free list
* dlfb_urb_completion calls schedule_delayed_work to schedule the function
  dlfb_release_urb_work to increase the semaphore count
* as the urb is on the free list, some other task grabs it and submits it
* the submitted urb completes, dlfb_urb_completion is called again
* dlfb_urb_completion calls schedule_delayed_work, but the work is already
  scheduled, so it does nothing
* finally, dlfb_release_urb_work is called, it increases the semaphore
  count by 1, although it should increase it by 2

So, the semaphore count is decreasing over time, and this causes gradual
performance degradation.

Note that in the current kernel, the "up" function may be called from
interrupt and it may race with the "down" function called by another
thread, so we don't have to offload the call of "up" to a workqueue at
all. This patch removes the workqueue code. The patch also changes
"down_interruptible" to "down" in dlfb_free_urb_list, so that we will
clean up the driver properly even if a signal arrives.

With this patch, the performance of udlfb no longer degrades.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
[b.zolnierkie: fix immediatelly -> immediately typo]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2018-07-25 15:41:54 +02:00
vkorjani
ea107a183b drm: Add support for pps and compression mode command packet
After enabling DSC we need to send compression mode command packet
and pps data packet, for which 2 new data types are added
07h  Compression Mode Data Type Write , short write, 2 parameters
0Ah  PPS Long Write (word count determines number of bytes)
This patch adds support to send these packets.

Cc: David Airlie <airlied@linux.ie>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-fbdev@vger.kernel.org

Changes in v3:
- None

Signed-off-by: vkorjani <vikas.korjani@intel.com>
[seanpaul removed pps_write_buffer fn, added types to packet_format helpers]
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-07-25 07:51:05 -04:00
Linus Torvalds
644f2639ae fbdev changes for v4.18:
- mark omapfb drivers as orphans in MAINTAINERS file (Tomi Valkeinen)
 
 - add missing module license tags to omap/omapfb driver (Arnd Bergmann)
 
 - add missing GPIOLIB dependendy to omap2/omapfb driver (Arnd Bergmann)
 
 - convert savagefb, aty128fb & radeonfb drivers to use msleep & co.
   (Jia-Ju Bai)
 
 - allow COMPILE_TEST build for viafb driver (media part was reviewed by
   media subsystem Maintainer)
 
 - remove unused MERAM support from sh_mobile_lcdcfb and shmob-drm drivers
   (drm parts were acked by shmob-drm driver Maintainer)
 
 - remove unused auo_k190xfb drivers
 
 - misc cleanups (Souptick Joarder, Wolfram Sang, Markus Elfring, Andy
   Shevchenko, Colin Ian King)
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Merge tag 'fbdev-v4.18' of git://github.com/bzolnier/linux

Pull fbdev updates from Bartlomiej Zolnierkiewicz:
 "There is nothing really major here, few small fixes, some cleanups and
  dead drivers removal:

   - mark omapfb drivers as orphans in MAINTAINERS file (Tomi Valkeinen)

   - add missing module license tags to omap/omapfb driver (Arnd
     Bergmann)

   - add missing GPIOLIB dependendy to omap2/omapfb driver (Arnd
     Bergmann)

   - convert savagefb, aty128fb & radeonfb drivers to use msleep & co.
     (Jia-Ju Bai)

   - allow COMPILE_TEST build for viafb driver (media part was reviewed
     by media subsystem Maintainer)

   - remove unused MERAM support from sh_mobile_lcdcfb and shmob-drm
     drivers (drm parts were acked by shmob-drm driver Maintainer)

   - remove unused auo_k190xfb drivers

   - misc cleanups (Souptick Joarder, Wolfram Sang, Markus Elfring, Andy
     Shevchenko, Colin Ian King)"

* tag 'fbdev-v4.18' of git://github.com/bzolnier/linux: (26 commits)
  fb_omap2: add gpiolib dependency
  video/omap: add module license tags
  MAINTAINERS: make omapfb orphan
  video: fbdev: pxafb: match_string() conversion fixup
  video: fbdev: nvidia: fix spelling mistake: "scaleing" -> "scaling"
  video: fbdev: fix spelling mistake: "frambuffer" -> "framebuffer"
  video: fbdev: pxafb: Convert to use match_string() helper
  video: fbdev: via: allow COMPILE_TEST build
  video: fbdev: remove unused sh_mobile_meram driver
  drm: shmobile: remove unused MERAM support
  video: fbdev: sh_mobile_lcdcfb: remove unused MERAM support
  video: fbdev: remove unused auo_k190xfb drivers
  video: omap: Improve a size determination in omapfb_do_probe()
  video: sm501fb: Improve a size determination in sm501fb_probe()
  video: fbdev-MMP: Improve a size determination in path_init()
  video: fbdev-MMP: Delete an error message for a failed memory allocation in two functions
  video: auo_k190x: Delete an error message for a failed memory allocation in auok190x_common_probe()
  video: sh_mobile_lcdcfb: Delete an error message for a failed memory allocation in two functions
  video: sh_mobile_meram: Delete an error message for a failed memory allocation in sh_mobile_meram_probe()
  video: fbdev: sh_mobile_meram: Drop SUPERH platform dependency
  ...
2018-06-17 05:00:24 +09:00
Bartlomiej Zolnierkiewicz
187a60358a video: fbdev: remove unused sh_mobile_meram driver
Since commit a521422ea4  ("ARM: shmobile: mackerel: Remove Legacy C
board code") MERAM functionality is unused. Remove it.

Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2018-05-14 15:47:30 +02:00
Bartlomiej Zolnierkiewicz
9076aa994a video: fbdev: sh_mobile_lcdcfb: remove unused MERAM support
Since commit a521422ea4  ("ARM: shmobile: mackerel: Remove Legacy C
board code") MERAM functionality is unused. Remove it.

Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2018-05-14 15:47:30 +02:00
Bartlomiej Zolnierkiewicz
745f8c14e3 video: fbdev: remove unused auo_k190xfb drivers
auo_k1900fb and auo_k1901fb drivers have been introduced six
years ago by following commits:

commit 2c8304d312 ("video: auo_k190x: add code shared by controller drivers")
commit 96b1d500e0 ("video: auo_k190x: add driver for AUO-K1900 variant")
commit 53027cdf2a ("video: auo_k190x: add driver for AUO-K1901 variant")

They never had any in-kernel user so just remove them (since
they are platform drivers they need corresponding platform
devices to be registered by kernel and it has never happened).

Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2018-05-14 15:47:30 +02:00
Mauro Carvalho Chehab
f10379aad3 media: include/video/omapfb_dss.h: use IS_ENABLED()
Just checking for ifdefs cause build issues as reported by
kernel test:

config: openrisc-allmodconfig (attached as .config)
compiler: or1k-linux-gcc (GCC) 6.0.0 20160327 (experimental)

All errors (new ones prefixed by >>):

   drivers/video/fbdev/omap2/omapfb/omapfb-main.c: In function 'omapfb_init_connections':
>> drivers/video/fbdev/omap2/omapfb/omapfb-main.c:2396:8: error: implicit declaration of function 'omapdss_find_mgr_from_display' [-Werror=implicit-function-declaration]
     mgr = omapdss_find_mgr_from_display(def_dssdev);
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/video/fbdev/omap2/omapfb/omapfb-main.c:2396:6: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
     mgr = omapdss_find_mgr_from_display(def_dssdev);
         ^
   drivers/video/fbdev/omap2/omapfb/omapfb-main.c: In function 'omapfb_find_default_display':
>> drivers/video/fbdev/omap2/omapfb/omapfb-main.c:2430:13: error: implicit declaration of function 'omapdss_get_default_display_name' [-Werror=implicit-function-declaration]
     def_name = omapdss_get_default_display_name();
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/video/fbdev/omap2/omapfb/omapfb-main.c:2430:11: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
     def_name = omapdss_get_default_display_name();
              ^

So, use IS_ENABLED() instead.

Fixes: 771f7be87f ("media: omapfb: omapfb_dss.h: add stubs to build with COMPILE_TEST && DRM_OMAP")

Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: tomi.valkeinen@ti.com
Cc: linux-omap@vger.kernel.org
Cc: linux-fbdev@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-05-05 11:45:51 -04:00
Mauro Carvalho Chehab
771f7be87f media: omapfb: omapfb_dss.h: add stubs to build with COMPILE_TEST && DRM_OMAP
Add stubs for omapfb_dss.h, in the case it is included by
some driver when CONFIG_FB_OMAP2 is not defined, with can
happen on ARM when DRM_OMAP is not 'n'.

That allows building such driver(s) with COMPILE_TEST.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-05-04 09:54:47 -04:00
Vladimir Zapolskiy
a2a348014a video: of: display_timing: Remove of_display_timings_exist() function
Since introduction of of_display_timings_exist() function in commit
cc3f414cf2 ("video: add of helper for display timings/videomode") it
didn't attract any users, and the function has no potential, because
of_get_display_timings() covers its functionality and does more.

Drop the unused exported function from the kernel.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2018-03-12 17:06:54 +01:00
Linus Torvalds
c3611b6d7f fbdev changes for v4.16:
- fix display-timings lookup in the Device Tree in atmel_lcdfb
   driver (Johan Hovold)
 
 - fix video mode and line_length to be set correctly in vfb driver
   (Pieter "PoroCYon" Sluys)
 
 - fix returning nonsensical values to the user-space on GIO_FONTX
   ioctl when using dummy console (Nicolas Pitre)
 
 - add missing license tag to mmpfb driver (Arnd Bergmann)
 
 - convert radeonfb and pxa3xx_gcu drivers to use ktime_get[_ts64]()
   instead of the deprecated do_gettimeofday() (Arnd Bergmann)
 
 - switch udlfb driver from using the pr_*() logging functions to
   the dev_*() ones + related cleanups (Ladislav Michl)
 
 - use __raw I/O accessors also on arm64 (Ji Zhang)
 
 - fix Kconfig help text for intelfb driver (Randy Dunlap)
 
 - do not duplicate features data in omapfb driver (Ladislav Michl)
 
 - misc cleanups (Colin Ian King, Markus Elfring, Rasmus Villemoes,
   Vasyl Gomonovych, Himanshu Jha, Michael Trimarchi)
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Merge tag 'fbdev-v4.16' of git://github.com/bzolnier/linux

Pull fbdev updates from Bartlomiej Zolnierkiewicz:
 "There is nothing really major here:

   - fix display-timings lookup in the Device Tree in atmel_lcdfb driver
     (Johan Hovold)

   - fix video mode and line_length to be set correctly in vfb driver
     (Pieter "PoroCYon" Sluys)

   - fix returning nonsensical values to the user-space on GIO_FONTX
     ioctl when using dummy console (Nicolas Pitre)

   - add missing license tag to mmpfb driver (Arnd Bergmann)

   - convert radeonfb and pxa3xx_gcu drivers to use ktime_get[_ts64]()
     instead of the deprecated do_gettimeofday() (Arnd Bergmann)

   - switch udlfb driver from using the pr_*() logging functions to the
     dev_*() ones + related cleanups (Ladislav Michl)

   - use __raw I/O accessors also on arm64 (Ji Zhang)

   - fix Kconfig help text for intelfb driver (Randy Dunlap)

   - do not duplicate features data in omapfb driver (Ladislav Michl)

   - misc cleanups (Colin Ian King, Markus Elfring, Rasmus Villemoes,
     Vasyl Gomonovych, Himanshu Jha, Michael Trimarchi)"

* tag 'fbdev-v4.16' of git://github.com/bzolnier/linux: (25 commits)
  video: udlfb: Switch from the pr_*() to the dev_*() logging functions
  video: udlfb: Constify read only data
  video: fbdev/mmp: add MODULE_LICENSE
  console/dummy: leave .con_font_get set to NULL
  fbdev: mxsfb: use framebuffer_alloc in the correct way
  video: udlfb: Do not name private data 'dev'
  video: udlfb: Remove noisy warnings
  video: udlfb: Remove redundant gdev variable
  video: udlfb: Remove unnecessary local variable
  fbdev: auo_k190x: Use zeroing memory allocator instead of allocator/memset
  vfb: fix video mode and line_length being set when loaded
  fbdev: arm64 use __raw I/O memory api
  omapfb: dss: Do not duplicate features data
  video: fbdev: omap2: Use PTR_ERR_OR_ZERO()
  fbdev: au1200fb: delete duplicate header contents
  fbdev: pxa3xx: use ktime_get_ts64 for time stamps
  fbdev: radeon: use ktime_get() for HZ calibration
  video: smscufx: Improve a size determination in two functions
  video: udlfb: Delete an unnecessary return statement in two functions
  video: udlfb: Improve a size determination in dlfb_alloc_urb_list()
  ...
2018-02-07 13:10:43 -08:00