Paul Cercueil [Wed, 14 Dec 2022 12:58:13 +0000 (13:58 +0100)]
drm: bridge: it66121: Use devm_regulator_bulk_get_enable()
Simplify the code of the driver by using
devm_regulator_bulk_get_enable(), which will handle powering up the
regulators, and disabling them on probe error or module removal.
Dave Stevenson [Wed, 7 Dec 2022 10:22:49 +0000 (11:22 +0100)]
drm/vc4: dsi: Remove entry to ULPS from vc4_dsi post_disable
Post_disable was sending the D-PHY sequence to put any device
into ULPS suspend mode, and then cutting power to the DSI block.
The power-on reset state of the DSI block is for DSI to be in
an operational state, not ULPS, so it then never sent the sequence
for exiting ULPS. Any attached device that didn't have an external
reset therefore remained in ULPS / standby, and didn't function.
Use of ULPS isn't well specified in DRM, therefore remove entering
it to avoid the above situation.
Dave Stevenson [Wed, 7 Dec 2022 10:22:48 +0000 (11:22 +0100)]
drm/vc4: dsi: Convert to using a bridge instead of encoder
Remove the encoder functions, and create a bridge attached to
this dumb encoder which implements the same functionality.
As a bridge has state which an encoder doesn't, we need to
add the state management functions as well.
As there is no bridge atomic_mode_set, move the initialisation
code that was in mode_set into _pre_enable.
The code to actually enable and disable sending video are split
from the general control into _enable and _disable.
Dave Stevenson [Wed, 7 Dec 2022 10:22:46 +0000 (11:22 +0100)]
drm/vc4: dsi: Remove splitting the bridge chain from the driver
Splitting the bridge chain fails for atomic bridges as the
framework can't add the relevant state in
drm_atomic_add_encoder_bridges.
The chain was split because we needed to power up before
calling pre_enable, but that is now done in mode_set, and will
move into the framework.
Dave Stevenson [Wed, 7 Dec 2022 10:22:45 +0000 (11:22 +0100)]
drm/vc4: dsi: Move initialisation to encoder_mode_set
Breaking the bridge chain does not work for atomic bridges/panels
and generally causes issues.
We need to initialise the DSI host before the bridge pre_enables
are called, so move that to encoder_mode_set in the same way that
dw-mipi-dsi does.
Dave Stevenson [Wed, 7 Dec 2022 10:22:44 +0000 (11:22 +0100)]
drm/vc4: dsi: Rename bridge to out_bridge
In preparation for converting the encoder to being a bridge,
rename the variable holding the next bridge in the chain to
out_bridge, so that our bridge can be called bridge.
Pin-yen Lin [Wed, 9 Nov 2022 09:52:27 +0000 (17:52 +0800)]
drm/bridge: it6505: Guard bridge power in IRQ handler
Add a pair of pm_runtime_get_if_in_use and pm_runtime_put_sync in the
interrupt handler to make sure the bridge won't be powered off during
the interrupt handlings. Also remove the irq_lock mutex because it's not
guarding anything now.
Add documentation for the new io-supply property, which specifies the
regulator for the I/O voltage supply on platforms where the panel
panel power and I/O supplies are separate.
Otto Pflüger [Thu, 1 Dec 2022 16:02:44 +0000 (17:02 +0100)]
drm/tiny: panel-mipi-dbi: Read I/O supply from DT
To support platforms with a separate I/O voltage supply, set the new
io_regulator property along with the regulator property of the DBI
device. Read the I/O supply from a new "io-supply" device tree
property.
Otto Pflüger [Thu, 1 Dec 2022 16:02:43 +0000 (17:02 +0100)]
drm/mipi-dbi: Support separate I/O regulator
The MIPI DBI specification defines separate vdd (panel power) and
vddi (I/O voltage) supplies. Displays that require different voltages
for the different supplies do exist, so the supplies cannot be
combined into one as they are now. Add a new io_regulator property to
the mipi_dbi_dev struct which can be set by the panel driver along
with the regulator property.
Xin Ji [Fri, 9 Dec 2022 03:04:18 +0000 (11:04 +0800)]
drm/bridge: anx7625: keep last configure timing
Sometimes kernel may resume back quickly after suspend,
and DRM not call .mode_set() to re-config
display timing before calling .atomic_enable(), bridge
driver with this patch to keep last configure timing.
Robert Foss [Mon, 12 Dec 2022 16:08:42 +0000 (17:08 +0100)]
Merge branch 'i2c/client_device_id_helper-immutable' of https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into drm-misc-next
This branch has been applied to the I2C tree and others, and
is a dependency of a large series of changes switching many
drivers to use i2c_client_get_device_id.
Paul Cercueil [Tue, 29 Nov 2022 19:17:16 +0000 (19:17 +0000)]
drm: exynos: Remove #ifdef guards for PM related functions
Use the DEFINE_RUNTIME_DEV_PM_OPS(), SYSTEM_SLEEP_PM_OPS(),
RUNTIME_PM_OPS() and pm_ptr() macros to handle the runtime and suspend
PM callbacks.
These macros allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_PM is disabled, without having
to use #ifdef guards.
This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.
Paul Cercueil [Tue, 29 Nov 2022 19:19:42 +0000 (19:19 +0000)]
drm/i915/gt: Remove #ifdef guards for PM related functions
Instead of defining two versions of intel_sysfs_rc6_init(), one for each
value of CONFIG_PM, add a check on !IS_ENABLED(CONFIG_PM) early in the
function. This will allow the compiler to automatically drop the dead
code when CONFIG_PM is disabled, without having to use #ifdef guards.
This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.
Paul Cercueil [Tue, 29 Nov 2022 19:19:40 +0000 (19:19 +0000)]
drm: gm12u320: Remove #ifdef guards for PM related functions
Use the pm_ptr() macro to handle the .suspend / .resume / .reset_resume
callbacks.
This macro allows the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_PM is disabled, without having
to use #ifdef guards.
This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch. It also allows to drop the
__maybe_unused tags.
Paul Cercueil [Tue, 29 Nov 2022 19:19:38 +0000 (19:19 +0000)]
drm: vboxvideo: Remove #ifdef guards for PM related functions
Use the pm_sleep_ptr() macro to handle the .suspend / .resume callbacks.
This macro allows the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards.
This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.
Paul Cercueil [Tue, 29 Nov 2022 19:19:37 +0000 (19:19 +0000)]
drm: tilcdc: Remove #ifdef guards for PM related functions
Use the DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to handle
the .suspend/.resume callbacks.
These macros allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards.
This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.
Paul Cercueil [Tue, 29 Nov 2022 19:19:35 +0000 (19:19 +0000)]
drm: shmobile: Remove #ifdef guards for PM related functions
Use the DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to handle
the .suspend/.resume callbacks.
These macros allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards.
This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.
Paul Cercueil [Tue, 29 Nov 2022 19:19:33 +0000 (19:19 +0000)]
drm: rcar-du: Remove #ifdef guards for PM related functions
Use the DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to handle
the .suspend/.resume callbacks.
These macros allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards.
This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.
Paul Cercueil [Tue, 29 Nov 2022 19:19:32 +0000 (19:19 +0000)]
drm: panfrost: Remove #ifdef guards for PM related functions
Use the EXPORT_GPL_RUNTIME_DEV_PM_OPS() and pm_ptr() macros to handle
the PM callbacks.
These macros allow the PM functions to be automatically dropped by the
compiler when CONFIG_PM is disabled, without having to use #ifdef
guards.
This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.
Paul Cercueil [Tue, 29 Nov 2022 19:17:17 +0000 (19:17 +0000)]
drm: imx/dcss: Remove #ifdef guards for PM related functions
Use the EXPORT_GPL_DEV_PM_OPS() and pm_ptr() macros to handle the PM
callbacks.
These macros allow the PM functions to be automatically dropped by the
compiler when CONFIG_PM is disabled, without having to use #ifdef
guards.
This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.
Paul Cercueil [Tue, 29 Nov 2022 19:17:15 +0000 (19:17 +0000)]
drm: atmel-hlcdc: Remove #ifdef guards for PM related functions
Use the DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to handle
the .suspend/.resume callbacks.
These macros allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards.
This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.
Stefan Eichenberger [Mon, 28 Nov 2022 11:23:20 +0000 (12:23 +0100)]
drm/bridge: lt8912b: Add hot plug detection
Enable hot plug detection when it is available on the HDMI port.
Without this connecting to a different monitor with incompatible timing
before the 10 seconds poll period will lead to a broken display output.
Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge") Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com> Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com> Reviewed-by: Adrien Grassein <adrien.grassein@gmail.com> Reviewed-by: Robert Foss <robert.foss@linaro.org> Signed-off-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221128112320.25708-1-francesco@dolcini.it
Dave Stevenson [Mon, 5 Dec 2022 17:33:27 +0000 (17:33 +0000)]
drm/panel: Add prepare_prev_first flag to drm_panel
Mapping to the drm_bridge flag pre_enable_prev_first,
add a new flag prepare_prev_first to drm_panel to allow
the panel driver to request that the upstream bridge should
be pre_enabled before the panel prepare.
Dave Stevenson [Mon, 5 Dec 2022 17:33:26 +0000 (17:33 +0000)]
drm/bridge: Introduce pre_enable_prev_first to alter bridge init order
DSI sink devices typically want the DSI host powered up and configured
before they are powered up. pre_enable is the place this would normally
happen, but they are called in reverse order from panel/connector towards
the encoder, which is the "wrong" order.
Add a new flag pre_enable_prev_first that any bridge can set
to swap the order of pre_enable (and post_disable) for that and the
immediately previous bridge.
Should the immediately previous bridge also set the
pre_enable_prev_first flag, the previous bridge to that will be called
before either of those which requested pre_enable_prev_first.
eg:
- Panel
- Bridge 1
- Bridge 2 pre_enable_prev_first
- Bridge 3
- Bridge 4 pre_enable_prev_first
- Bridge 5 pre_enable_prev_first
- Bridge 6
- Encoder
Would result in pre_enable's being called as Panel, Bridge 1, Bridge 3,
Bridge 2, Bridge 6, Bridge 5, Bridge 4, Encoder.
Sam Ravnborg [Mon, 5 Dec 2022 17:33:25 +0000 (17:33 +0000)]
drm/bridge: Drop unused drm_bridge_chain functions
The drm_bridge_chain_{pre_enable,enable,disable,post_disable} has no
users left and we have atomic variants that should be used.
Drop them so they do not gain new users.
Adjust a few comments to avoid references to the dropped functions.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Maxime Ripard <mripard@kernel.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Andrzej Hajda <a.hajda@samsung.com> Cc: Neil Armstrong <narmstrong@baylibre.com> Cc: Robert Foss <robert.foss@linaro.org> Cc: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://lore.kernel.org/r/20221205173328.1395350-4-dave.stevenson@raspberrypi.com Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Dave Stevenson [Mon, 5 Dec 2022 17:33:24 +0000 (17:33 +0000)]
drm/mediatek: dp: Replace usage of drm_bridge_chain_ functions
Commit f70ac097a2cf ("drm/mediatek: Add MT8195 Embedded DisplayPort
driver") added usage of the drm_bridge_chain_ functions which are
to be deprecated.
Replace with the drm_atomic_bridge_chain_ variants using the
current state.
Sam Ravnborg [Mon, 5 Dec 2022 17:33:23 +0000 (17:33 +0000)]
drm/bridge: ps8640: Use atomic variants of drm_bridge_funcs
The atomic variants of enable/disable in drm_bridge_funcs are the
preferred operations - introduce these.
The ps8640 driver used the non-atomic variants of the drm_bridge_chain_pre_enable/
drm_bridge_chain_post_disable - convert these to the atomic variants.
v2:
- Init state operations in drm_bridge_funcs (Laurent)
Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Maxime Ripard <mripard@kernel.org> Cc: Jitao Shi <jitao.shi@mediatek.com> Cc: Philip Chen <philipchen@chromium.org> Cc: Neil Armstrong <narmstrong@baylibre.com> Cc: Robert Foss <robert.foss@linaro.org> Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com> Cc: Jonas Karlman <jonas@kwiboo.se> Cc: Jernej Skrabec <jernej.skrabec@gmail.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://lore.kernel.org/r/20221205173328.1395350-2-dave.stevenson@raspberrypi.com Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Maxime Ripard [Thu, 1 Dec 2022 15:11:48 +0000 (16:11 +0100)]
drm/vc4: tests: Introduce a mocking infrastructure
In order to test the current atomic_check hooks we need to have a DRM
device that has roughly the same capabilities and layout that the actual
hardware. We'll also need a bunch of functions to create arbitrary
atomic states.
Let's create some helpers to create a device that behaves like the real
one, and some helpers to maintain the atomic state we want to check.
Maxime Ripard [Thu, 1 Dec 2022 15:11:46 +0000 (16:11 +0100)]
drm/vc4: crtc: Make encoder lookup helper public
We'll need a function that looks up an encoder by its vc4_encoder_type.
Such a function is already present in the CRTC code, so let's make it
public so that we can reuse it in the unit tests.
Maxime Ripard [Thu, 1 Dec 2022 15:11:45 +0000 (16:11 +0100)]
drm/vc4: crtc: Introduce a lower-level crtc init helper
The current vc4_crtc_init() helper assumes that we will be using
hardware planes and calls vc4_plane_init().
While it's a reasonable assumption, we'll want to mock the plane and
thus provide our own. Let's create a helper that will take the plane as
an argument.
Maxime Ripard [Thu, 1 Dec 2022 15:11:41 +0000 (16:11 +0100)]
drm/tests: helpers: Allow for a custom device struct to be allocated
The current helper to allocate a DRM device doesn't allow for any
subclassing by drivers, which is going to be troublesome as we work on
getting some kunit testing on atomic modesetting code.
Let's use a similar pattern to the other allocation helpers by providing
the structure size and offset as arguments.
Maxime Ripard [Thu, 1 Dec 2022 15:11:38 +0000 (16:11 +0100)]
drm/tests: helpers: Create the device in another function
We'll need in some tests to control when the device needs to be added
and removed, so let's split the device creation from the DRM device
creation function.
Maxime Ripard [Thu, 1 Dec 2022 15:11:35 +0000 (16:11 +0100)]
drm/tests: helpers: Switch to EXPORT_SYMBOL_GPL
drm_kunit_device_init() among other things will allocate a device and
wrap around root_device_register. This function is exported with
EXPORT_SYMBOL_GPL, so we can't really change the license.
Commit 44a3928324e9 ("drm/tests: Add Kunit Helpers") introduced the
drm_kunit_device_init() function but didn't document it properly. Add
that documentation.
Maxime Ripard [Thu, 1 Dec 2022 15:11:33 +0000 (16:11 +0100)]
drm/tests: Introduce a config option for the KUnit helpers
Driver-specific tests will need access to the helpers without pulling
every DRM framework test. Let's create an intermediate Kconfig options
for the helpers.
Allen Ballway [Wed, 30 Nov 2022 17:08:22 +0000 (17:08 +0000)]
drm: panel-orientation-quirks: Add quirk for DynaBook K50
Like the ASUS T100HAN for which there is already a quirk,
the DynaBook K50 has a 800x1280 portrait screen mounted
in the tablet part of a landscape oriented 2-in-1.
Update the quirk to be more generic and apply to this device.
Noralf Trønnes [Wed, 30 Nov 2022 19:26:54 +0000 (20:26 +0100)]
drm/gud: Enable synchronous flushing by default
gud has a module parameter that controls whether framebuffer flushing
happens synchronously during the commit or asynchronously in a worker.
GNOME before version 3.38 handled all displays in the same rendering loop.
This lead to gud slowing down the refresh rate for a faster monitor. This
has now been fixed so lets change the default.
The plan is to remove async flushing in the future. The code is now
structured in a way that makes it easy to do this.
Noralf Trønnes [Wed, 30 Nov 2022 19:26:53 +0000 (20:26 +0100)]
drm/gud: Use the shadow plane helper
Use the shadow plane helper to take care of mapping the framebuffer for
CPU access. The synchronous flushing is now done inline without the use of
a worker. The async path now uses a shadow buffer to hold framebuffer
changes and it doesn't read the framebuffer behind userspace's back
anymore.
v2:
- Use src as variable name for iosys_map (Thomas)
- Prepare imported buffer for CPU access in the driver (Thomas)
Noralf Trønnes [Wed, 30 Nov 2022 19:26:50 +0000 (20:26 +0100)]
drm/gud: Don't retry a failed framebuffer flush
If a framebuffer flush fails the driver will do one retry by requeing the
worker. Currently the worker is used even for synchronous flushing, but a
later patch will inline it, so this needs to change. Thinking about how to
solve this I came to the conclusion that this retry mechanism was a fix
for a problem that was only in the mind of the developer (me) and not
something that solved a real problem.
So let's remove this for now and revisit later should it become necessary.
gud_add_damage() has now only one caller so it can be inlined.
The source of this warning is in iosys_map_clear() called from
dma_buf_vmap(). It conditionally sets values based on map->is_iomem. The
iosys_map variables are allocated uninitialized on the stack leading to
->is_iomem having all kinds of values and not only 0/1.
Christian König [Mon, 9 May 2022 19:13:35 +0000 (21:13 +0200)]
drm/ttm: merge ttm_bo_api.h and ttm_bo_driver.h v2
Merge and cleanup the two headers into a single description of the
object API. Also move all the documentation to the implementation and
drop unnecessary includes from the header.
Christian König [Wed, 23 Nov 2022 09:14:56 +0000 (10:14 +0100)]
drm/ttm: use per BO cleanup workers
Instead of a single worker going over the list of delete BOs in regular
intervals use a per BO worker which blocks for the resv object and
locking of the BO.
This not only simplifies the handling massively, but also results in
much better response time when cleaning up buffers.
Christian König [Fri, 18 Nov 2022 19:22:21 +0000 (20:22 +0100)]
drm/ttm: remove ttm_bo_(un)lock_delayed_workqueue
Those functions never worked correctly since it is still perfectly
possible that a buffer object is released and the background worker
restarted even after calling them.
Thomas Zimmermann [Fri, 2 Dec 2022 12:56:44 +0000 (13:56 +0100)]
drm/mipi-dbi: Move drm_dev_{enter, exit}() out from fb_dirty functions
Call drm_dev_enter() and drm_dev_exit() in the outer-most callbacks
of the modesetting pipeline. If drm_dev_enter() fails, the driver can
thus avoid unnecessary work.
Thomas Zimmermann [Fri, 2 Dec 2022 12:56:43 +0000 (13:56 +0100)]
drm/mipi-dbi: Use shadow-plane mappings
Use the buffer mappings provided by shadow-plane helpers. As the
mappings are established while the commit can still fail, errors
are now reported correctly to callers.
Thomas Zimmermann [Fri, 2 Dec 2022 12:56:42 +0000 (13:56 +0100)]
drm/mipi-dbi: Support shadow-plane state
Implement MIPI DBI planes with struct drm_shadow_plane_state, so that the
respective drivers can use the vmap'ed GEM-buffer memory. Implement state
helpers, the {begin,end}_fb_access helpers and wire up everything.
With this commit, MIPI DBI drivers can access the GEM object's memory
that is provided by shadow-plane state. The actual changes to drivers
are implemented separately.
Thomas Zimmermann [Fri, 2 Dec 2022 12:56:41 +0000 (13:56 +0100)]
drm/mipi-dbi: Prepare framebuffer copy operation in pipe-update helpers
Move the vmap/vunmap blocks from the inner fb_dirty helpers into the
MIPI DBI update helpers. The function calls can result in waiting and/or
processing overhead. Reduce the penalties by executing the functions once
in the outer-most function of the pipe update.
This change also prepares for MIPI DBI for shadow-plane helpers. With
shadow-plane helpers, transfer source buffers are mapped into kernel
address space automatically.
Thomas Zimmermann [Fri, 2 Dec 2022 12:56:40 +0000 (13:56 +0100)]
drm/mipi-dbi: Initialize default driver functions with macro
Introduce DRM_MIPI_DBI_SIMPLE_DISPLAY_PIPE_FUNCS to initialize MIPI-DBI
helpers to default values and convert drivers. The prepare_fb function
set by some drivers is called implicitly by simple-kms helpers, so leave
it out.
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