linux-stable.git/drivers/gpu/drm/panel, branch linux-5.11.y

drm/mcde/panel: Inverse misunderstood flag

2021-05-14T08:49:51+00:00

[ Upstream commit d0c5ac04e7feedbc069f26f4dcbf35b521ae7fc5 ]

A recent patch renaming MIPI_DSI_MODE_EOT_PACKET to
MIPI_DSI_MODE_NO_EOT_PACKET brought to light the
misunderstanding in the current MCDE driver and all
its associated panel drivers that MIPI_DSI_MODE_EOT_PACKET
would mean "use EOT packet" when in fact it means the
reverse.

Fix it up by implementing the flag right in the MCDE
DSI driver and remove the flag from panels that actually
want the EOT packet.

Suggested-by: Nicolas Boichat 
Signed-off-by: Linus Walleij 
Reviewed-by: Nicolas Boichat 
Fixes: 5fc537bfd000 ("drm/mcde: Add new driver for ST-Ericsson MCDE")
Fixes: 899f24ed8d3a ("drm/panel: Add driver for Novatek NT35510-based panels")
Fixes: ac1d6d74884e ("drm/panel: Add driver for Samsung S6D16D0 panel")
Fixes: 435e06c06cb2 ("drm/panel: s6e63m0: Add DSI transport")
Fixes: 8152c2bfd780 ("drm/panel: Add driver for Sony ACX424AKP panel")
Link: https://patchwork.freedesktop.org/patch/msgid/20210304004138.1785057-1-linus.walleij@linaro.org
Signed-off-by: Sasha Levin

drm/panel: kd35t133: allow using non-continuous dsi clock

2021-03-04T11:15:24+00:00

commit d922d58fedcd98ba625e89b625a98e222b090b10 upstream.

The panel is able to work when dsi clock is non-continuous, thus
the system power consumption can be reduced using such feature.

Add MIPI_DSI_CLOCK_NON_CONTINUOUS to panel's mode_flags.

Also the flag actually becomes necessary after
commit c6d94e37bdbb ("drm/bridge/synopsys: dsi: add support for non-continuous HS clock")
and without it the panel only emits stripes instead of output.

Fixes: c6d94e37bdbb ("drm/bridge/synopsys: dsi: add support for non-continuous HS clock")
Cc: stable@vger.kernel.org # 5.10+
Signed-off-by: Heiko Stuebner 
Tested-by: Ezequiel Garcia 
Reviewed-by: Christopher Morgan 
Link: https://patchwork.freedesktop.org/patch/msgid/20210206135020.1991820-1-heiko@sntech.de
Signed-off-by: Maarten Lankhorst 
Signed-off-by: Greg Kroah-Hartman

drm/panel: s6e63m0: Support max-brightness

2021-03-04T11:14:06+00:00

[ Upstream commit 1f20bf5921de420071fdb1d55cda7550ae137bcd ]

The "max-brightness" is a standard backlight property that
we need to support for the Samsung GT-I8190 Golden because
the display will go black if we crank up the brightness
too high.

As the platform needs this ability to give picture this is
a regression fix along with the addition of the property
to the GT-I8190 device tree.

Cc: Stephan Gerhold 
Fixes: 9c3f0a0dd6a1 ("drm/panel: s6e63m0: Implement 28 backlight levels")
Signed-off-by: Linus Walleij 
Reviewed-by: Sam Ravnborg 
Link: https://patchwork.freedesktop.org/patch/msgid/20201214222210.238081-1-linus.walleij@linaro.org
Signed-off-by: Sasha Levin

drm/panel: mantix: Tweak init sequence

2021-03-04T11:14:05+00:00

[ Upstream commit dd396dbc4d7811c1567cc43faa4b9ad68094c44d ]

We've seen some (non permanent) burn in and bad white balance
on some of the panels. Adding this bit from a vendor supplied
sequence fixes it.

Fixes: 72967d5616d3 ("drm/panel: Add panel driver for the Mantix MLAF057WE51-X DSI panel")
Signed-off-by: Guido Günther 
Reviewed-by: Linus Walleij 
Reviewed-by: Sam Ravnborg 
Link: https://patchwork.freedesktop.org/patch/msgid/8451831b60d5ecb73a156613d98218a31bd55680.1605688147.git.agx@sigxcpu.org
Signed-off-by: Sasha Levin

drm/panel: s6e63m0: Fix init sequence again

2021-03-04T11:14:05+00:00

[ Upstream commit 47b1adc1d2a3b39233a56e183296b335222c9a6d ]

The DSI version of the panel behaved instable and close
scrutiny of the vendor driver from the Samsung
GT-S8190 shows a different initialization sequence for
the DSI mode panel than the DPI mode panel.

Make the initialization depend on whether we are in
DSI or DPI mode and handle the differences.

After this the panel on the GT-I8190 becomes much more
stable.

Also spell out some more custom DCS commands found in
the vendor source code to cut down a bit on magic
where we can.

Fixes: f0aee45ffc8b ("drm/panel: s6e63m0: Fix init sequence")
Signed-off-by: Linus Walleij 
Reviewed-by: Sam Ravnborg 
Cc: Stephan Gerhold 
Link: https://patchwork.freedesktop.org/patch/msgid/20201205122229.1952980-1-linus.walleij@linaro.org
Signed-off-by: Sasha Levin

Merge tag 'drm-misc-next-2020-11-27-1' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2020-12-15T09:21:48+00:00

drm-misc-next for 5.11:

UAPI Changes:

Cross-subsystem Changes:

 * char/agp: Disable frontend without CONFIG_DRM_LEGACY
 * mm: Fix fput in mmap error path; Introduce vma_set_file() to change
   vma->vm_file

Core Changes:

 * dma-buf: Use sgtables in system heap; Move heap helpers to CMA-heap code;
   Skip sync for unmapped buffers; Alloc higher order pages is available;
   Respect num_fences when initializing shared fence list
 * doc: Improvements around DRM modes and SCALING_FILTER
 * Pass full state to connector atomic functions + callee updates
 * Cleanups
 * shmem: Map pages with caching by default; Cleanups
 * ttm: Fix DMA32 for global page pool
 * fbdev: Cleanups
 * fb-helper: Update framebuffer after userspace writes; Unmap console buffer
   during shutdown; Rework damage handling of shadow framebuffer

Driver Changes:

 * amdgpu: Multi-hop fixes, Clenaups
 * imx: Fix rotation for Vivante tiled formats; Support nearest-neighour
   skaling; Cleanups
 * mcde: Fix RGB formats; Support DPI output; Cleanups
 * meson: HDMI clock fixes
 * panel: Add driver and bindings for Innolux N125HCE-GN1
 * panel/s6e63m0: More backlight levels; Fix init; Cleanups
 * via: Clenunps
 * virtio: Use fence ID for handling fences; Cleanups

Signed-off-by: Daniel Vetter 
From: Thomas Zimmermann 
Link: https://patchwork.freedesktop.org/patch/msgid/20201127083055.GA29139@linux-uq9g

Merge tag 'drm-next-2020-12-11' of git://anongit.freedesktop.org/drm/drm

2020-12-14T19:07:56+00:00

Pull drm updates from Dave Airlie:
 "Not a huge amount of big things here, AMD has support for a few new HW
  variants (vangogh, green sardine, dimgrey cavefish), Intel has some
  more DG1 enablement. We have a few big reworks of the TTM layers and
  interfaces, GEM and atomic internal API reworks cross tree. fbdev is
  marked orphaned in here as well to reflect the current reality.

  core:
   - documentation updates
   - deprecate DRM_FORMAT_MOD_NONE
   - atomic crtc enable/disable rework
   - GEM convert drivers to gem object functions
   - remove SCATTER_LIST_MAX_SEGMENT

  sched:
   - avoid infinite waits

  ttm:
   - remove AGP support
   - don't modify caching for swapout
   - ttm pinning rework
   - major TTM reworks
   - new backend allocator
   - multihop support

  vram-helper:
   - top down BO placement fix
   - TTM changes
   - GEM object support

  displayport:
   - DP 2.0 DPCD prep work
   - DP MST extended DPCD caps

  fbdev:
   - mark as orphaned

  amdgpu:
   - Initial Vangogh support
   - Green Sardine support
   - Dimgrey Cavefish support
   - SG display support for renoir
   - SMU7 improvements
   - gfx9+ modiifier support
   - CI BACO fixes

  radeon:
   - expose voltage via hwmon on SUMO

  amdkfd:
   - fix unique id handling

  i915:
   - more DG1 enablement
   - bigjoiner support
   - integer scaling filter support
   - async flip support
   - ICL+ DSI command mode
   - Improve display shutdown
   - Display refactoring
   - eLLC machine fbdev loading fix
   - dma scatterlist fixes
   - TGL hang fixes
   - eLLC display buffer caching on SKL+
   - MOCS PTE seeting for gen9+

  msm:
   - Shutdown hook
   - GPU cooling device support
   - DSI 7nm and 10nm phy/pll updates
   - sm8150/sm2850 DPU support
   - GEM locking re-work
   - LLCC system cache support

  aspeed:
   - sysfs output config support

  ast:
   - LUT fix
   - new display mode

  gma500:
   - remove 2d framebuffer accel

  panfrost:
   - move gpu reset to a worker

  exynos:
   - new HDMI mode support

  mediatek:
   - MT8167 support
   - yaml bindings
   - MIPI DSI phy code moved

  etnaviv:
   - new perf counter
   - more lockdep annotation

  hibmc:
   - i2c DDC support

  ingenic:
   - pixel clock reset fix
   - reserved memory support
   - allow both DMA channels at once
   - different pixel format support
   - 30/24/8-bit palette modes

  tilcdc:
   - don't keep vblank irq enabled

  vc4:
   - new maintainer added
   - DSI registration fix

  virtio:
   - blob resource support
   - host visible and cross-device support
   - uuid api support"

* tag 'drm-next-2020-12-11' of git://anongit.freedesktop.org/drm/drm: (1754 commits)
  drm/amdgpu: Initialise drm_gem_object_funcs for imported BOs
  drm/amdgpu: fix size calculation with stolen vga memory
  drm/amdgpu: remove amdgpu_ttm_late_init  and amdgpu_bo_late_init
  drm/amdgpu: free the pre-OS console framebuffer after the first modeset
  drm/amdgpu: enable runtime pm using BACO on CI dGPUs
  drm/amdgpu/cik: enable BACO reset on Bonaire
  drm/amd/pm: update smu10.h WORKLOAD_PPLIB setting for raven
  drm/amd/pm: remove one unsupported smu function for vangogh
  drm/amd/display: setup system context for APUs
  drm/amd/display: add S/G support for Vangogh
  drm/amdkfd: Fix leak in dmabuf import
  drm/amdgpu: use AMDGPU_NUM_VMID when possible
  drm/amdgpu: fix sdma instance fw version and feature version init
  drm/amd/pm: update driver if version for dimgrey_cavefish
  drm/amd/display: 3.2.115
  drm/amd/display: [FW Promotion] Release 0.0.45
  drm/amd/display: Revert DCN2.1 dram_clock_change_latency update
  drm/amd/display: Enable gpu_vm_support for dcn3.01
  drm/amd/display: Fixed the audio noise during mode switching with HDCP mode on
  drm/amd/display: Add wm table for Renoir
  ...

drm/panel: sony-acx565akm: Fix race condition in probe

2020-11-29T21:38:12+00:00

The probe routine acquires the reset GPIO using GPIOD_OUT_LOW. Directly
afterwards it calls acx565akm_detect(), which sets the GPIO value to
HIGH. If the bootloader initialized the GPIO to HIGH before the probe
routine was called, there is only a very short time period of a few
instructions where the reset signal is LOW. Exact time depends on
compiler optimizations, kernel configuration and alignment of the stars,
but I expect it to be always way less than 10us. There are no public
datasheets for the panel, but acx565akm_power_on() has a comment with
timings and reset period should be at least 10us. So this potentially
brings the panel into a half-reset state.

The result is, that panel may not work after boot and can get into a
working state by re-enabling it (e.g. by blanking + unblanking), since
that does a clean reset cycle. This bug has recently been hit by Ivaylo
Dimitrov, but there are some older reports which are probably the same
bug. At least Tony Lindgren, Peter Ujfalusi and Jarkko Nikula have
experienced it in 2017 describing the blank/unblank procedure as
possible workaround.

Note, that the bug really goes back in time. It has originally been
introduced in the predecessor of the omapfb driver in commit 3c45d05be382
("OMAPDSS: acx565akm panel: handle gpios in panel driver") in 2012.
That driver eventually got replaced by a newer one, which had the bug
from the beginning in commit 84192742d9c2 ("OMAPDSS: Add Sony ACX565AKM
panel driver") and still exists in fbdev world. That driver has later
been copied to omapdrm and then was used as a basis for this driver.
Last but not least the omapdrm specific driver has been removed in
commit 45f16c82db7e ("drm/omap: displays: Remove unused panel drivers").

Reported-by: Jarkko Nikula 
Reported-by: Peter Ujfalusi 
Reported-by: Tony Lindgren 
Reported-by: Aaro Koskinen 
Reported-by: Ivaylo Dimitrov 
Cc: Merlijn Wajer 
Cc: Laurent Pinchart 
Cc: Tomi Valkeinen 
Fixes: 1c8fc3f0c5d2 ("drm/panel: Add driver for the Sony ACX565AKM panel")
Signed-off-by: Sebastian Reichel 
Tested-by: Ivaylo Dimitrov 
Tested-by: Aaro Koskinen 
Tested-by: Jarkko Nikula 
Signed-off-by: Sam Ravnborg 
Link: https://patchwork.freedesktop.org/patch/msgid/20201127200429.129868-1-sebastian.reichel@collabora.com

panel-simple: add Innolux N125HCE-GN1

2020-11-24T17:43:06+00:00

The Innolux N125HCE-GN1 display is used in the MNT Reform 2.0 laptop,
attached via eDP to a SN65DSI86 MIPI-DSI to eDP bridge.

Signed-off-by: Lukas F. Hartmann 
Signed-off-by: Sam Ravnborg 
Link: https://patchwork.freedesktop.org/patch/msgid/20201124172604.981746-1-lukas@mntre.com

drm/panel: s6e63m0: Fix init sequence

2020-11-20T13:55:02+00:00

The init sequence consist of a number of unknown settings
for the display controller. This patch achieves two things:

- Fix an error that must have happened when the driver was
  converted from the backlight subsystem: the 0xb8
  configuration command was lost and added as a tail to
  the previous command.

- Update some minor settings in some bytes here and there
  according to changes in the Samsung GT-I9070 and
  Samsung GT-S7710 code dumps. Since two other devices use
  these settings they probably reflect trimmings later
  found to be better for the display rather than
  customizations for these devices.

Signed-off-by: Linus Walleij 
Reviewed-by: Guido Günther 
Cc: Stephan Gerhold 
Cc: Paweł Chmiel 
Link: https://patchwork.freedesktop.org/patch/msgid/20201117175621.870085-3-linus.walleij@linaro.org