linux.git/drivers/gpu/drm/vc4/vc4_debugfs.c, branch v5.2

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

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 
Reviewed-by: Enrico Weigelt 
Reviewed-by: Kate Stewart 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman

drm/vc4: vc4_debugfs_regset32() can be static

2019-04-04T19:56:45+00:00

Fixes: c9be804c8c7a ("drm/vc4: Use common helpers for debugfs setup by the driver components.")
Signed-off-by: kbuild test robot 
Signed-off-by: Eric Anholt 
Link: https://patchwork.freedesktop.org/patch/msgid/20190403213629.GA31570@lkp-ib03

drm/vc4: Use common helpers for debugfs setup by the driver components.

2019-04-03T19:49:13+00:00

The global list of all debugfs entries for the driver was painful: the
list couldn't see into the components' structs, so each component had
its own debugs show function to find the component, then find the
regset and dump it.  The components also had to be careful to check
that they were actually registered in vc4 before dereferencing
themselves, in case they weren't probed on a particular platform.
They routinely failed at that.

Instead, we can have the components add their debugfs callbacks to a
little list in vc4 to be registered at drm_dev_register() time, which
gets vc4_debugfs.c out of the business of knowing the whole list of
components.

Thanks to this change, dsi0 (if it existed) would register its node.

v2: Rebase on hvs_underrun addition.
v3: whitespace fixup

Signed-off-by: Eric Anholt 
Link: https://patchwork.freedesktop.org/patch/msgid/20190401183559.3823-1-eric@anholt.net
Reviewed-by: Paul Kocialkowski

drm/vc4: Add a debugfs entry to disable/enable the load tracker

2019-03-06T13:48:07+00:00

In order to test whether the load tracker is working as expected, we
need the ability to compare the commit result with the underrun
indication. With the load tracker always enabled, commits that are
expected to trigger an underrun are always rejected, so userspace
cannot get the actual underrun indication from the hardware.

Add a debugfs entry to disable/enable the load tracker, so that a DRM
commit expected to trigger an underrun can go through with the load
tracker disabled. The underrun indication is then available to
userspace and can be checked against the commit result with the load
tracker enabled.

Signed-off-by: Paul Kocialkowski 
Reviewed-by: Eric Anholt 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20190220155124.25022-4-paul.kocialkowski@bootlin.com

drm/vc4: Report HVS underrun errors

2019-03-06T13:47:59+00:00

Add a debugfs entry and helper for reporting HVS underrun errors as
well as helpers for masking and unmasking the underrun interrupts.
Add an IRQ handler and initial IRQ configuration.
Rework related register definitions to take the channel number.

Signed-off-by: Boris Brezillon 
Signed-off-by: Paul Kocialkowski 
Reviewed-by: Eric Anholt 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20190220155124.25022-2-paul.kocialkowski@bootlin.com

drm/vc4: Add support for the transposer block

2018-07-07T05:54:46+00:00

The transposer block is providing support for mem-to-mem composition,
which is exposed as a drm_writeback connector in DRM.

Add a driver to support this feature.

Signed-off-by: Boris Brezillon 
Reviewed-by: Eric Anholt 
Link: https://patchwork.freedesktop.org/patch/msgid/20180703075022.15138-9-boris.brezillon@bootlin.com

drm/vc4: Add DSI driver

2017-02-01T20:51:23+00:00

The DSI0 and DSI1 blocks on the 2835 are related hardware blocks.
Some registers move around, and the featureset is slightly different,
as DSI1 (the 4-lane DSI) is a later version of the hardware block.
This driver doesn't yet enable DSI0, since we don't have any hardware
to test against, but it does put a lot of the register definitions and
code in place.

v2: Use the clk_hw interfaces, don't set CLK_IS_BASIC (from review by
    Stephen Boyd)

Signed-off-by: Eric Anholt 
Acked-by: Daniel Vetter  (v1)
Link: http://patchwork.freedesktop.org/patch/msgid/20170131192912.11316-1-eric@anholt.net

drm/vc4: Remove vc4_debugfs_cleanup()

2017-01-30T08:48:48+00:00

drm_debugfs_cleanup() now removes all minor->debugfs_list entries
automatically, so the drm_driver.debugfs_cleanup callback is not
needed.

Cc: eric@anholt.net
Signed-off-by: Noralf Trønnes 
Reviewed-by: Eric Anholt 
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/20170126225621.12314-17-noralf@tronnes.org

drm/vc4: Add support for the VEC (Video Encoder) IP

2016-12-09T23:26:31+00:00

The VEC IP is a TV DAC, providing support for PAL and NTSC standards.

Signed-off-by: Boris Brezillon 
Signed-off-by: Eric Anholt

drm/vc4: Add DPI driver

2016-04-14T19:22:53+00:00

The DPI interface involves taking a ton of our GPIOs to be used as
outputs, and routing display signals over them in parallel.

v2: Use display_info.bus_formats[] to replace our custom DT
    properties.
v3: Rebase on V3D documentation changes.
v4: Fix rebase detritus from V3D documentation changes.

Signed-off-by: Eric Anholt 
Acked-by: Rob Herring