drm/ast: Turn ioregs_lock to modeset_lock

The lock for the I/O registers is only relevant during mode-setting
operations. It protects the registers from concurrent access from
reading EDID information.

Reduce lock coverage to mode setting, rename the lock and move it
entirely into the mode-setting code. No functional changes, as the
I/O lock was never used for anything else than mode setting.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231116100240.22975-2-tzimmermann@suse.de

drm/ast: Disconnect BMC if physical connector is connected

Many user-space compositors fail with mode setting if a CRTC has
more than one connected connector. This is the case with the BMC
on Aspeed systems. Work around this problem by setting the BMC's
connector status to disconnected when the physical connector has
a display attached. This way compositors will only see one connected
connector at a time; either the physical one or the BMC.

Suggested-by: Jocelyn Falempe <jfalempe@redhat.com>
Fixes: e329cb53b45d ("drm/ast: Add BMC virtual connector")
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: <stable@vger.kernel.org> # v6.6+
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231116130217.22931-1-tzimmermann@suse.de

drm/ast: Rename AST_IO_MISC_PORT_READ to AST_IO_VGAMR_R

Rename AST_IO_MISC_PORT_READ to AST_IO_VGAMR_R to align naming
in the driver with documentation. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231017083653.10063-12-tzimmermann@suse.de

drm/ast: Rename AST_IO_INPUT_STATUS1_READ to AST_IO_VGAIR1_R

Rename AST_IO_INPUT_STATUS1_READ to AST_IO_VGAIR1_R to align naming
in the driver with documentation. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231017083653.10063-11-tzimmermann@suse.de

drm/ast: Rename AST_IO_CRTC_PORT to AST_IO_VGACRI

Rename AST_IO_CRTC_PORT to AST_IO_VGACRI to align naming
in the driver with documentation. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231017083653.10063-10-tzimmermann@suse.de

drm/ast: Rename AST_IO_GR_PORT to AST_IO_VGAGRI

Rename AST_IO_GR_PORT to AST_IO_VGAGRI to align naming
in the driver with documentation. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231017083653.10063-9-tzimmermann@suse.de

drm/ast: Rename AST_IO_DAC_DATA to AST_IO_VGAPDR

Rename AST_IO_DAC_DATA to AST_IO_VGAPDR to align naming
in the driver with documentation. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231017083653.10063-8-tzimmermann@suse.de

drm/ast: Rename AST_IO_DAC_INDEX_WRITE to AST_IO_VGADWR

Rename AST_IO_DAC_INDEX_WRITE to AST_IO_VGADWR to align naming
in the driver with documentation. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231017083653.10063-7-tzimmermann@suse.de

drm/ast: Rename AST_IO_SEQ_PORT to AST_IO_VGASRI

Rename AST_IO_VGA_SEQ_PORT to AST_IO_VGASRI to align naming
in the driver with documentation. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231017083653.10063-5-tzimmermann@suse.de

drm/ast: Rename AST_IO_MISC_PORT_WRITE to AST_IO_VGAMR_W

Rename AST_IO_MISC_PORT_WRITE to AST_IO_VGAMR_W to align naming
in the driver with documentation. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231017083653.10063-3-tzimmermann@suse.de

drm/ast: Rename AST_IO_AR_PORT_WRITE to AST_IO_VGAARI_W

Rename AST_IO_AR_PORT_WRITE to AST_IO_VGAARI_W to align naming
in the driver with documentation. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231017083653.10063-2-tzimmermann@suse.de

drm/ast: report connection status on Display Port.

Aspeed always report the display port as "connected", because it
doesn't set a .detect_ctx callback.
Fix this by providing the proper detect callback for astdp and dp501.

This also fixes the following regression:
Since commit fae7d186403e ("drm/probe-helper: Default to 640x480 if no
EDID on DP") The default resolution is now 640x480 when no monitor is
connected. But Aspeed graphics is mostly used in servers, where no monitor
is attached. This also affects the remote BMC resolution to 640x480, which
is inconvenient, and breaks the anaconda installer.

v2: Add .detect callback to the dp/dp501 connector (Jani Nikula)
v3: Use .detect_ctx callback, and refactors (Thomas Zimmermann)
Add a BMC virtual connector
v4: Better indent detect_ctx() functions (Thomas Zimmermann)
v5: Enable polling of the dp and dp501 connector status
(Thomas Zimmermann)
v6: Change check order in ast_astdp_is_connected (Jammy Huang)

Fixes: fae7d186403e ("drm/probe-helper: Default to 640x480 if no EDID on DP")
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230713134316.332502-2-jfalempe@redhat.com

drm/ast: Add BMC virtual connector

Most aspeed devices have a BMC, which allows to remotely see the screen.
Also in the common use case, those servers don't have a display connected.
So add a Virtual connector, to reflect that even if no display is
connected, the framebuffer can still be seen remotely.
This prepares the work to implement a detect_ctx() for the Display port
connector.

v4: call drm_add_modes_noedid() with 4096x4096 (Thomas Zimmermann)
remove useless struct field init to 0 (Thomas Zimmermann)
don't use drm_simple_encoder_init() (Thomas Zimmermann)
inline ast_bmc_connector_init() (Thomas Zimmermann)

Fixes: fae7d186403e ("drm/probe-helper: Default to 640x480 if no EDID on DP")
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230713134316.332502-1-jfalempe@redhat.com

drm/ast: Distinguish among chip generations

ASpeed distinguishes among various generations of the AST graphics
chipset with various models. [1] The most-recent model AST 2600 is
of the 7th generation, the AST 2500 is of the 6th generation, and so
on.

The ast driver simply picks one of the models as representative for
the whole generation. In several places, individual models of the
same generation need to be handled differently, which then requires
additional code for detecting the model.

Introduce different generations of the Aspeed chipset. In the source
code, refer to the generation instead of the representation model where
possible. The few places that require per-model handling are now clearly
marked.

In the enum ast_chip, we arrange each model's value such that it
encodes the generation. This allows for an easy test. The actual values
are ordered, but not of interest to the driver.

v2:
* use __ast_gen_is_eq() (Jingfeng)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://web.archive.org/web/20141007093258/http://www.aspeedtech.com/products.php?fPath=20 # 1
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Jocelyn Falempe <jfalempe@redhat.com> # AST2600
Reviewed-by: Sui Jingfeng <suijingfeng@loongson.cn>
Link: https://patchwork.freedesktop.org/patch/msgid/20230621130032.3568-10-tzimmermann@suse.de

drm/ast: Fix modeset failed on DisplayPort

If we switch display and update cursor together, it could lead to
modeset failed because of concurrent access to IO registers.

Add lock protection in DP's edid access to avoid this problem.

Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Jammy Huang <jammy_huang@aspeedtech.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230601004847.1115-1-jammy_huang@aspeedtech.com

drm/ast: Rename to_ast_private() to to_ast_device()

The helper to_ast_private() now upcasts to struct ast_device. Rename
it accordingly. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230221155745.27484-5-tzimmermann@suse.de

drm/ast: Rename struct ast_private to struct ast_device

The data structure struct ast_private represents an AST device. Its
name comes from the time when it was allocated and stored separately
in struct drm_device.dev_private. The DRM device is now embedded, so
rename struct ast_private to struct ast_device.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230221155745.27484-4-tzimmermann@suse.de

drm/ast: Implement struct drm_plane_helper_funcs.atomic_enable

Enable the primary plane for ast hardware via atomic_enable. Atomic
helpers invoke this callback only when the plane becomes active.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230209154107.30680-3-tzimmermann@suse.de

drm/ast: Remove unnecessary include statements for drm_crtc_helper.h

Several source files include drm_crtc_helper.h without needing it or
only to get its transitive include statements; leading to unnecessary
compile-time dependencies.

Drop drm_crtc_helper.h where possible.

v2:
* update commit message (Sam)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230116131235.18917-7-tzimmermann@suse.de

drm/ast: Init iosys_map pointer as I/O memory for damage handling

Ast hardware scans out the primary plane from video memory, which
is in I/O-memory space. Hence init the damage handler's iosys_map
pointer as I/O memory.

Not all platforms support accessing I/O memory as system memory,
although it's usually not a problem in ast's x86-based systems.

The error report is at [1].

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Fixes: f2fa5a99ca81 ("drm/ast: Convert ast to SHMEM")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Link: https://lore.kernel.org/lkml/202212170111.eInM0unS-lkp@intel.com/T/#u # 1
Link: https://patchwork.freedesktop.org/patch/msgid/20221216193005.30280-1-tzimmermann@suse.de

drm/ast: Fix start address computation

During the driver conversion to shmem, the start address for the
scanout buffer was set to the base PCI address.
In most cases it works because only the lower 24bits are used, and
due to alignment it was almost always 0.
But on some unlucky hardware, it's not the case, and some uninitialized
memory is displayed on the BMC.
With shmem, the primary plane is always at offset 0 in GPU memory.

* v2: rewrite the patch to set the offset to 0. (Thomas Zimmermann)
* v3: move the change to plane_init() and also fix the cursor plane.
(Jammy Huang)

Tested on a sr645 affected by this bug.

Fixes: f2fa5a99ca81 ("drm/ast: Convert ast to SHMEM")
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jammy Huang <jammy_huang@aspeedtech.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230209094417.21630-1-jfalempe@redhat.com

drm: Remove drm_mode_config::fb_base

The fb_base in struct drm_mode_config has been unused for a long time.
Some drivers set it and some don't leading to a very confusing state
where the variable can't be relied upon, because there's no indication
as to which driver sets it and which doesn't.

The only usage of fb_base is internal to two drivers so instead of trying
to force it into all the drivers to get it into a coherent state
completely remove it.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Thomas Zimmermann <tzimemrmann@suse.de>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221019024401.394617-1-zack@kde.org

drm/ast: Avoid reprogramming primary-plane scanout address

Some AST-based BMCs stop display output for up to 5 seconds after
reprogramming the scanout address. As the address is fixed, avoid
re-setting the address' value.

v2:
* only update offset if it changed (Jocelyn)

Reported-by: Jocelyn Falempe <jfalempe@redhat.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221013112923.769-9-tzimmermann@suse.de

drm/ast: Convert ast to SHMEM

Replace GEM VRAM helpers with GEM SHMEM helpers in ast. Avoids OOM
errors when allocating video memory. Also adds support for dma-buf
functionality.

Aspeed display hardware supports display resolutions of FullHD and
higher at 32-bit pixel depth. But the amount of video memory is in
the range of 8 MiB to 32 MiB, which adds constraints to the actually
available resolutions. As atomic modesetting with VRAM helpers
requires double buffering in video memory, ast fails to pageflip
in some configurations. For example, FullHD with an active cursor
plane does not work on devices with 16 MiB of video memory.

Resolve this problem by converting the ast driver to GEM SHMEM helpers.
Keep the buffer objects in system memory and copy to video memory
on pageflips via shadow-plane helpers. Userspace used to require shadow
planes for decent performance, but that's now provided by the driver.
To replace the memory management, the patch also implements damage
handling for the primary plane.

With GEM SHMEM helpers, dma-buf import and export is now supported
by ast. This allows easier screen mirroring across devices or with
an Aspeed-based BMC. A corresponding feature request is available
at [1].

v2:
* fix typos in commit message (Jocelyn)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/dri-devel/20220901124451.2523077-1-oushixiong@kylinos.cn/ # [1]
Link: https://patchwork.freedesktop.org/patch/msgid/20221013112923.769-8-tzimmermann@suse.de

drm/ast: Style cleanups in plane code

Rename some of the variables in the plane code to better reflect the
old and new state during checks and updates. Change some indention as
well. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221013112923.769-7-tzimmermann@suse.de

drm/ast: Rename struct ast_cursor_plane to struct ast_plane

Rename the plane structure struct ast_cursor_plane to struct
ast_plane as it will be used for the primary plane as well. No
functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221013112923.769-6-tzimmermann@suse.de

drm/ast: Remove cursor double buffering

Update the cursor image via damage handling in-place. The cursor's
double buffering has no visible effect on the output, so remove it.

Done in preparation of switching ast to GEM SHMEM helpers. Removing
double buffering will allow us to use the same data structure for
primary and cursor plane.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221013112923.769-5-tzimmermann@suse.de

drm/ast: Do not call drm_atomic_add_affected_planes()

There's no need to add planes to the atomic state. Remove the call
to drm_atomic_add_affected_planes() from ast.

On full modesets, the DRM helpers already add a CRTC's planes to the
atomic state; see drm_atomic_helper_check_modeset(). There's no reason
to call drm_atomic_add_affected_planes() unconditionally in the CRTC's
atomic_check() in ast. It's also too late, as the atomic_check() of
the added planes will not be called before the commit.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221013112923.769-4-tzimmermann@suse.de

drm/ast: Call drm_atomic_helper_check_plane_state() unconditionally

Always call drm_atomic_helper_check_plane_state() in each plane's
atomic_check function. At the minimum, it needs to set or clear the
plane state's 'visible' field. Otherwise the plane-state handling
is bogus and would keep updating planes that have been disabled.

While at it, also warn if the primary plane has been enabled, but is
not visible. This cannot legally happen as the plane always covers
the entire screen.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221013112923.769-3-tzimmermann@suse.de

drm/ast: Acquire I/O-register lock in atomic_commit_tail function

Hold I/O-register lock in atomic_commit_tail to protect all pipeline
updates at once. Protects modesetting against concurrent EDID reads.

Complex modesetting operations involve mode changes and plane updates.
These steps used to be protected individually against concurrent I/O.
Make all this atomic wrt to reading display modes via EDID. The EDID
code in the connector's get_modes helper already acquires the necessary
lock.

A similar issue was fixed in commit 2d70b9a1482e ("drm/mgag200: Acquire
I/O-register lock in atomic_commit_tail function") for mgag200.

v2:
* fix typo in commit message (Jocelyn)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221013112923.769-2-tzimmermann@suse.de

drm/atomic-helper: Replace drm_atomic_helper_check_crtc_state()

Rename the atomic helper function drm_atomic_helper_check_crtc_state()
to drm_atomic_helper_check_crtc_primary_plane() and only check for an
attached primary plane. Adapt callers.

Instead of having one big function to check for various CRTC state
conditions, we rather want smaller functions that drivers can pick
individually.

v5:
* rebase on top of udl changes

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221007124338.24152-3-tzimmermann@suse.de

drm/ast: Add Atomic gamma lut support for aspeed

The current ast driver only supports legacy gamma interface.
This also fixes a Gnome3/Wayland error which incorrectly adds
gamma to atomic commit:
"Page flip discarded: CRTC property (GAMMA_LUT) not found"

I only tested remotely, so I wasn't able to check that it had
an effect on the VGA output. But when activating "Night Light"
in Gnome, ast_crtc_load_lut() is called.

v2: use the same functions as mgag200.
handle 16bits color mode.

v3: Check gamma_lut size in atomic check.

v4: revert 16bits mode, v1 was correct.
make sure gamma table are set when primary plane format
changes.
remove rgb888 format that is not used.

Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220930094754.745626-1-jfalempe@redhat.com

drm/ast: Fix video broken in some resolutions on ast2600

Some cases are not handled well for ast2600.

Signed-off-by: Jammy Huang <jammy_huang@aspeedtech.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220916091706.4559-1-jammy_huang@aspeedtech.com

drm/ast: Add resolution support for 1152x864@75

Add 1152x864 into support list.

Signed-off-by: Jammy Huang <jammy_huang@aspeedtech.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220916085058.3386-1-jammy_huang@aspeedtech.com

drm/atomic-helper: Remove _HELPER_ infix from DRM_PLANE_HELPER_NO_SCALING

Rename DRM_PLANE_HELPER_NO_SCALING to DRM_PLANE_NO_SCALING. The constant
is not really a helper, but rather a characteristic of the plane itself.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220720083058.15371-4-tzimmermann@suse.de

drm/atomic-helper: Move DRM_PLANE_HELPER_NO_SCALING to atomic helpers

The macro DRM_PLANE_HELPER_NO_SCALING is only useful with the interfaces
in drm_atomic_helper.h, but defined in drm_plane_helper.h. So half of
DRM includes the latter header file for using this macro. Move the macro
and remove the include statements.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220720083058.15371-3-tzimmermann@suse.de

drm/ast: Enable primary plane with CRTC

As the CRTC requires a primary plane for display, ensure that the
primary plane is enabled with the CRTC.

Use drm_atomic_helper_check_crtc_state(). Add all affected planes
to the atomic state so that their state will be checked as well.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220617103226.25617-4-tzimmermann@suse.de

drm/ast: Fix black screen when getting out of suspend

With an AST2600, the screen is garbage when going out of suspend.
This is because color settings are lost, and not restored on resume.
Force the color settings on DPMS_ON, to make sure the settings are correct.

I didn't write this code, it comes from the out-of-tree aspeed driver v1.13
https://www.aspeedtech.com/support_driver/

Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Venkat Tadikonda <venkateswara.rao@intel.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220622124815.356035-1-jfalempe@redhat.com

drm: Drop drm_edid.h from drm_crtc.h

drm_crtc.h has no need for drm_edid.h, so don't include it.
Avoids useless rebuilds of the entire universe when
touching drm_edid.h.

Quite a few placs do currently depend on drm_edid.h without
actually including it directly. All of those need to be fixed
up.

v2: Fix up i915 and msm some more
v3: Fix alphabetical ordering (Sam)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220614090245.30283-1-ville.syrjala@linux.intel.com
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>

drm/ast: Support multiple outputs

Systems with AST graphics can have multiple output; typically VGA
plus some other port. Record detected output chips in a bitmask and
initialize each output on its own.

Assume a VGA output by default and use SIL164 and DP501 if available.
For ASTDP assume that it can run in parallel with VGA.

Tested on AST2100.

v3:
* define a macro for each BIT(ast_tx_chip) (Patrik)
v2:
* make VGA/SIL164/DP501 mutually exclusive

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Fixes: a59b026419f3 ("drm/ast: Initialize encoder and connector for VGA in helper function")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20220607092008.22123-2-tzimmermann@suse.de

drm/ast: Support multiple outputs

Systems with AST graphics can have multiple output; typically VGA
plus some other port. Record detected output chips in a bitmask and
initialize each output on its own.

Assume a VGA output by default and use SIL164 and DP501 if available.
For ASTDP assume that it can run in parallel with VGA.

Tested on AST2100.

v3:
* define a macro for each BIT(ast_tx_chip) (Patrik)
v2:
* make VGA/SIL164/DP501 mutually exclusive

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Fixes: a59b026419f3 ("drm/ast: Initialize encoder and connector for VGA in helper function")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20220607092008.22123-2-tzimmermann@suse.de
(cherry picked from commit 7f35680ada234ce00828b8ea841ba7ca1e00ff52)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

drm/ast: Protect concurrent access to I/O registers with lock

Add a mutex lock to protect concurrent access to I/O registers
against each other. This happens between invocation of commit-
tail functions and get-mode operations. Both with use the CRTC
index register AST_IO_CRTC_PORT. Concurrent access can lead to
failed mode-setting operations.

v2:
* fix typo in commit description (Jocelyn)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reported-by: KuoHsiang Chou <kuohsiang_chou@aspeedtech.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220502142514.2174-3-tzimmermann@suse.de

drm/ast: Create the driver for ASPEED proprietory Display-Port

V1:
1. The MCU FW controling ASPEED DP is loaded by BMC boot loader.
2. Driver starts after CR[3:1] == 111b that indicates Tx is ASTDP,
and CRD1[5] has been asserted by BMVC boot loader.
3. EDID is prioritized by DP monitor.
4. DP's EDID has high priority to decide resolution supporting.

V2:
Modules description:
1. ASTDP (ASPEED DisplayPort) is controlled by dedicated
AST-MCU (ASPEED propriatary MCU).
2. MCU is looping in charged of HPD, Read EDID, Link Training with
DP sink.
3. ASTDP and AST-MUC reside in BMC (Baseboard Management controller)
addressing-space.
4. ASPEED DRM driver requests MCU to get HPD and EDID by CR-scratched
register.

Booting sequence:
1. Check if TX is ASTDP // ast_dp_launch()
2. Check if DP-MCU FW has loaded // ast_dp_launch()
3. Read EDID // ast_dp_read_edid()
4. Resolution switch // ast_dp_SetOutput()

V3:
1. Remove unneeded semicolon.
2. Apply to git://anongit.freedesktop.org/drm/drm, instead of
git://anongit.freedesktop.org/drm/drm-misc
3. Resolve auto build test WARNINGs on V1 patch.

V4:
1. Sync code-base with kernel 5.17_rc6
2. Remove the define of DPControlPower, because DP chips need to be
powered on to be used.
3. Remove the switches of PHY and Display from EDID procedure.
4. Revise increaing delay to fixed delay, because this version kernel
doesn't detect minitor consistenntly.
5. Create clean-up code used for reset of power state on errors with
-EIO manner.
6. Revise the DP detection by TX type and its DP-FW status during
booting and resume.
7. Correct the CamelCase Style.
8. Use register reading while needing, and remove to hold full
register.
9. Instead of 'u8', revise to 'bool' on swwitch of PHY and video.
10.Correct typo
11.Remove the duplicated copy of TX definition.
12.Use EDID_LENGTH as the constant of 128.

Signed-off-by: KuoHsiang Chou <kuohsiang_chou@aspeedtech.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220428075603.20904-1-kuohsiang_chou@aspeedtech.com

drm/ast: Move SIL164-based connector code into separate helpers

Add helpers for initializing SIL164-based connectors. These used to be
handled by the VGA connector code. But SIL164 provides output via DVI-I,
so set the encoder and connector types accordingly.

If a SIL164 chip has been detected, ast will now create a DVI-I
connector instead of a VGA connector.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220207141544.30015-10-tzimmermann@suse.de

drm/ast: Move DP501-based connector code into separate helpers

Add helpers for DP501-based connectors. DP501 provides output via
DisplayPort. This used to be handled by the VGA connector code.

If a DP501 chip has been detected, ast will now create a DisplayPort
connector instead of a VGA connector.

Remove the DP501 code from ast_vga_connector_helper_get_modes(). Also
remove the call to drm_connector_update_edid_property(), which is
performed by drm_get_edid().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220207141544.30015-9-tzimmermann@suse.de

drm/ast: Read encoder possible-CRTC mask from drm_crtc_mask()

Read the encoder's possible-CRTC mask from the involved CRTC instead
of hard-coding it.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220207141544.30015-8-tzimmermann@suse.de

drm/ast: Initialize encoder and connector for VGA in helper function

Move encoder and connector initialization into a single helper and
put all related mode-setting structures into a single place. Done in
preparation of moving transmitter code into separate helpers. No
functional changes.

v2:
* move encoder CRTC bitmask fix into separate patch (Javier)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220207141544.30015-7-tzimmermann@suse.de

drm/ast: Rename struct ast_connector to struct ast_vga_connector

Prepare for introducing other connectors besides VGA. No functional
changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220207141544.30015-6-tzimmermann@suse.de

drm/ast: Remove unused value dp501_maxclk

Remove reading the link-rate. The value is maintained by the connector
code but never used.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220207141544.30015-5-tzimmermann@suse.de

drm/ast: Move connector mode_valid function to CRTC

The tests in ast_mode_valid() verify the correct resolution for the
supplied mode. This is a limitation of the CRTC, so move the function
to the CRTC helpers. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220207141544.30015-3-tzimmermann@suse.de

drm/ast: Fail if connector initialization fails

Update the connector code to fail if the connector could not be
initialized. The current code just ignored the error and failed
later when the connector was supposed to be used.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220207141544.30015-2-tzimmermann@suse.de

dma-buf-map: Rename to iosys-map

Rename struct dma_buf_map to struct iosys_map and corresponding APIs.
Over time dma-buf-map grew up to more functionality than the one used by
dma-buf: in fact it's just a shim layer to abstract system memory, that
can be accessed via regular load and store, from IO memory that needs to
be acessed via arch helpers.

The idea is to extend this API so it can fulfill other needs, internal
to a single driver. Example: in the i915 driver it's desired to share
the implementation for integrated graphics, which uses mostly system
memory, with discrete graphics, which may need to access IO memory.

The conversion was mostly done with the following semantic patch:

@r1@
@@
- struct dma_buf_map
+ struct iosys_map

@r2@
@@
(
- DMA_BUF_MAP_INIT_VADDR
+ IOSYS_MAP_INIT_VADDR
|
- dma_buf_map_set_vaddr
+ iosys_map_set_vaddr
|
- dma_buf_map_set_vaddr_iomem
+ iosys_map_set_vaddr_iomem
|
- dma_buf_map_is_equal
+ iosys_map_is_equal
|
- dma_buf_map_is_null
+ iosys_map_is_null
|
- dma_buf_map_is_set
+ iosys_map_is_set
|
- dma_buf_map_clear
+ iosys_map_clear
|
- dma_buf_map_memcpy_to
+ iosys_map_memcpy_to
|
- dma_buf_map_incr
+ iosys_map_incr
)

@@
@@
- #include <linux/dma-buf-map.h>
+ #include <linux/iosys-map.h>

Then some files had their includes adjusted and some comments were
update to remove mentions to dma-buf-map.

Since this is not specific to dma-buf anymore, move the documentation to
the "Bus-Independent Device Accesses" section.

v2:
- Squash patches

v3:
- Fix wrong removal of dma-buf.h from MAINTAINERS
- Move documentation from dma-buf.rst to device-io.rst

v4:
- Change documentation title and level

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220204170541.829227-1-lucas.demarchi@intel.com

drm/ast: Create threshold values for AST2600

The threshold value is used for AST2600 only.

Signed-off-by: KuoHsiang Chou <kuohsiang_chou@aspeedtech.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220117083643.41493-1-kuohsiang_chou@aspeedtech.com

drm/ast: Move I2C code into separate source file

Move I2C code into its own source file. Makes the mode-setting
code a little less convoluted.

v3:
* fix SPDX tag to say 'SPDX-License-Identifier'

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20211206091125.29501-4-tzimmermann@suse.de

drm/ast: Convert I2C code to managed cleanup

Release the I2C adapter as part of the DRM device cleanup. Remove
ast's dedicated helper for struct drm_connector_funcs.destroy.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20211206091125.29501-3-tzimmermann@suse.de

drm/ast: Handle failed I2C initialization gracefully

I2C initialization is allowed to fail. In this case, create a connector
without DDC adapter. The current code would dereference a NULL pointer.

Reading the modes from the connector is supposed to work without I2C
adapter. Add the respective test.

v2:
* init edid to NULL to avoid uninitialized read (Dan)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20211206091125.29501-2-tzimmermann@suse.de

drm/ast: potential dereference of null pointer

The return value of kzalloc() needs to be checked.
To avoid use of null pointer '&ast_state->base' in case of the
failure of alloc.

Fixes: f0adbc382b8b ("drm/ast: Allocate initial CRTC state of the correct size")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20211214014126.2211535-1-jiasheng@iscas.ac.cn

Revert "drm/ast: Add detect function support"

This reverts commit aae74ff9caa8de9a45ae2e46068c417817392a26,
since it prevents my AMD Milan system from booting, with:

[ 27.189558] BUG: kernel NULL pointer dereference, address: 0000000000000000
[ 27.197506] #PF: supervisor write access in kernel mode
[ 27.203333] #PF: error_code(0x0002) - not-present page
[ 27.209064] PGD 0 P4D 0
[ 27.211885] Oops: 0002 [#1] PREEMPT SMP NOPTI
[ 27.216744] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.15.0-rc6+ #15
[ 27.223928] Hardware name: AMD Corporation ETHANOL_X/ETHANOL_X, BIOS RXM1006B 08/20/2021
[ 27.232955] RIP: 0010:run_timer_softirq+0x38b/0x4a0
[ 27.238397] Code: 4c 89 f7 e8 37 27 ac 00 49 c7 46 08 00 00 00 00 49 8b 04 24 48 85 c0 74 71 4d 8b 3c 24 4d 89 7e 08 66 90 49 8b 07 49 8b 57 08 <48> 89 02 48 85 c0 74 04 48 89 50 08 49 8b 77 18 41 f6 47 22 20 4c
[ 27.259350] RSP: 0018:ffffc42d00003ee8 EFLAGS: 00010086
[ 27.265176] RAX: dead000000000122 RBX: 0000000000000000 RCX: 0000000000000101
[ 27.273134] RDX: 0000000000000000 RSI: 0000000000000087 RDI: 0000000000000001
[ 27.281084] RBP: ffffc42d00003f70 R08: 0000000000000000 R09: 00000000000003eb
[ 27.289043] R10: ffffa0860cb300d0 R11: ffffa0c44de290b0 R12: ffffc42d00003ef8
[ 27.297002] R13: 00000000fffef200 R14: ffffa0c44de18dc0 R15: ffffa0867a882350
[ 27.304961] FS: 0000000000000000(0000) GS:ffffa0c44de00000(0000) knlGS:0000000000000000
[ 27.313988] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 27.320396] CR2: 0000000000000000 CR3: 000000014569c001 CR4: 0000000000770ef0
[ 27.328346] PKRU: 55555554
[ 27.331359] Call Trace:
[ 27.334073] <IRQ>
[ 27.336314] ? __queue_work+0x420/0x420
[ 27.340589] ? lapic_next_event+0x21/0x30
[ 27.345060] ? clockevents_program_event+0x8f/0xe0
[ 27.350402] __do_softirq+0xfb/0x2db
[ 27.354388] irq_exit_rcu+0x98/0xd0
[ 27.358275] sysvec_apic_timer_interrupt+0xac/0xd0
[ 27.363620] </IRQ>
[ 27.365955] asm_sysvec_apic_timer_interrupt+0x12/0x20
[ 27.371685] RIP: 0010:cpuidle_enter_state+0xcc/0x390
[ 27.377292] Code: 3d 01 79 0a 50 e8 44 ed 77 ff 49 89 c6 0f 1f 44 00 00 31 ff e8 f5 f8 77 ff 80 7d d7 00 0f 85 e6 01 00 00 fb 66 0f 1f 44 00 00 <45> 85 ff 0f 88 17 01 00 00 49 63 c7 4c 2b 75 c8 48 8d 14 40 48 8d
[ 27.398243] RSP: 0018:ffffffffb0e03dc8 EFLAGS: 00000246
[ 27.404069] RAX: ffffa0c44de00000 RBX: 0000000000000001 RCX: 000000000000001f
[ 27.412028] RDX: 0000000000000000 RSI: ffffffffb0bafc1f RDI: ffffffffb0bbdb81
[ 27.419986] RBP: ffffffffb0e03e00 R08: 00000006549f8f3f R09: ffffffffb1065200
[ 27.427935] R10: ffffa0c44de27ae4 R11: ffffa0c44de27ac4 R12: ffffa0c5634cb000
[ 27.435894] R13: ffffffffb1065200 R14: 00000006549f8f3f R15: 0000000000000001
[ 27.443854] ? cpuidle_enter_state+0xbb/0x390
[ 27.448712] cpuidle_enter+0x2e/0x40
[ 27.452695] call_cpuidle+0x23/0x40
[ 27.456584] do_idle+0x1f0/0x270
[ 27.460181] cpu_startup_entry+0x20/0x30
[ 27.464553] rest_init+0xd4/0xe0
[ 27.468149] arch_call_rest_init+0xe/0x1b
[ 27.472619] start_kernel+0x6bc/0x6e2
[ 27.476764] x86_64_start_reservations+0x24/0x26
[ 27.481912] x86_64_start_kernel+0x75/0x79
[ 27.486477] secondary_startup_64_no_verify+0xb0/0xbb
[ 27.492111] Modules linked in: kvm_amd(+) kvm ipmi_si(+) ipmi_devintf rapl wmi_bmof ipmi_msghandler input_leds ccp k10temp mac_hid sch_fq_codel msr ip_tables x_tables autofs4 btrfs blake2b_generic zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ast i2c_algo_bit drm_vram_helper drm_ttm_helper ttm drm_kms_helper crct10dif_pclmul crc32_pclmul ghash_clmulni_intel syscopyarea aesni_intel sysfillrect crypto_simd sysimgblt fb_sys_fops cryptd hid_generic cec nvme ahci usbhid drm e1000e nvme_core hid libahci i2c_piix4 wmi
[ 27.551789] CR2: 0000000000000000
[ 27.555482] ---[ end trace 897987dfe93dccc6 ]---
[ 27.560630] RIP: 0010:run_timer_softirq+0x38b/0x4a0
[ 27.566069] Code: 4c 89 f7 e8 37 27 ac 00 49 c7 46 08 00 00 00 00 49 8b 04 24 48 85 c0 74 71 4d 8b 3c 24 4d 89 7e 08 66 90 49 8b 07 49 8b 57 08 <48> 89 02 48 85 c0 74 04 48 89 50 08 49 8b 77 18 41 f6 47 22 20 4c
[ 27.587021] RSP: 0018:ffffc42d00003ee8 EFLAGS: 00010086
[ 27.592848] RAX: dead000000000122 RBX: 0000000000000000 RCX: 0000000000000101
[ 27.600808] RDX: 0000000000000000 RSI: 0000000000000087 RDI: 0000000000000001
[ 27.608765] RBP: ffffc42d00003f70 R08: 0000000000000000 R09: 00000000000003eb
[ 27.616716] R10: ffffa0860cb300d0 R11: ffffa0c44de290b0 R12: ffffc42d00003ef8
[ 27.624673] R13: 00000000fffef200 R14: ffffa0c44de18dc0 R15: ffffa0867a882350
[ 27.632624] FS: 0000000000000000(0000) GS:ffffa0c44de00000(0000) knlGS:0000000000000000
[ 27.641650] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 27.648159] CR2: 0000000000000000 CR3: 000000014569c001 CR4: 0000000000770ef0
[ 27.656119] PKRU: 55555554
[ 27.659133] Kernel panic - not syncing: Fatal exception in interrupt
[ 29.030411] Shutting down cpus with NMI
[ 29.034699] Kernel Offset: 0x2e600000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[ 29.046790] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---

Since unreliable, found by bisecting for KASAN's use-after-free in
enqueue_timer+0x4f/0x1e0, where the timer callback is called.

Reported-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Fixes: aae74ff9caa8 ("drm/ast: Add detect function support")
Link: https://lore.kernel.org/lkml/0f7871be-9ca6-5ae4-3a40-5db9a8fb2365@amd.com/
Cc: Ainux <ainux.wang@gmail.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@redhat.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: sterlingteng@gmail.com
Cc: chenhuacai@kernel.org
Cc: Chuck Lever III <chuck.lever@oracle.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jon Grimm <jon.grimm@amd.com>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211021153006.92983-1-kim.phillips@amd.com

drm/ast: Use offset-adjusted shadow-plane mappings

For framebuffers with non-zero offset fields, shadow-plane helpers
provide a pointer to the first byte of the contained data. Use it in
ast.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210803125928.27780-3-tzimmermann@suse.de

DRM: ast: Fixed coding style issues of ast_mode.c

Removed space before comma, fixed if statements by putting trailing
statements on new line, fixed unsigned int declaration, and removed
not needed else statement after return.

Signed-off-by: Gregory Williams <gregwills85@gmail.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210731005328.GA19016@devbox

drm/ast: Zero is missing in detect function

The function ast_get_modes() will also return 0, when it try to get the
edid, but it also do not get the edid.

Signed-off-by: Ainux.Wang <ainux.wang@gmail.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210716015615.9150-1-ainux.wang@gmail.com

drm/vram-helpers: Create DRM_GEM_VRAM_PLANE_HELPER_FUNCS

Like we have for the shadow helpers too, and roll it out to drivers.

Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Tian Tao <tiantao6@hisilicon.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210622165511.3169559-11-daniel.vetter@ffwll.ch

drm/ast: Add detect function support

The existence of the connector cannot be detected,
so add the detect function to support.

Signed-off-by: Ainux <ainux.wang@gmail.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210526111515.40015-1-ainux.wang@gmail.com

drm: Use state helper instead of the plane state pointer

Many drivers reference the plane->state pointer in order to get the
current plane state in their atomic_update or atomic_disable hooks,
which would be the new plane state in the global atomic state since
_swap_state happened when those hooks are run.

Use the drm_atomic_get_new_plane_state helper to get that state to make it
more obvious.

This was made using the coccinelle script below:

@ plane_atomic_func @
identifier helpers;
identifier func;
@@

(
static const struct drm_plane_helper_funcs helpers = {
...,
.atomic_disable = func,
...,
};
|
static const struct drm_plane_helper_funcs helpers = {
...,
.atomic_update = func,
...,
};
)

@ adds_new_state @
identifier plane_atomic_func.func;
identifier plane, state;
identifier new_state;
@@

func(struct drm_plane *plane, struct drm_atomic_state *state)
{
...
- struct drm_plane_state *new_state = plane->state;
+ struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane);
...
}

@ include depends on adds_new_state @
@@

#include <drm/drm_atomic.h>

@ no_include depends on !include && adds_new_state @
@@

+ #include <drm/drm_atomic.h>
#include <drm/...>

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20210219120032.260676-1-maxime@cerno.tech

drm/atomic: Pass the full state to planes atomic disable and update

The current atomic helpers have either their object state being passed as
an argument or the full atomic state.

The former is the pattern that was done at first, before switching to the
latter for new hooks or when it was needed.

Let's convert the remaining helpers to provide a consistent interface,
this time with the planes atomic_update and atomic_disable.

The conversion was done using the coccinelle script below, built tested on
all the drivers.

@@
identifier plane, plane_state;
symbol state;
@@

struct drm_plane_helper_funcs {
...
void (*atomic_update)(struct drm_plane *plane,
- struct drm_plane_state *plane_state);
+ struct drm_atomic_state *state);
...
}

@@
identifier plane, plane_state;
symbol state;
@@

struct drm_plane_helper_funcs {
...
void (*atomic_disable)(struct drm_plane *plane,
- struct drm_plane_state *plane_state);
+ struct drm_atomic_state *state);
...
}

@ plane_atomic_func @
identifier helpers;
identifier func;
@@

(
static const struct drm_plane_helper_funcs helpers = {
...,
.atomic_update = func,
...,
};
|
static const struct drm_plane_helper_funcs helpers = {
...,
.atomic_disable = func,
...,
};
)

@@
struct drm_plane_helper_funcs *FUNCS;
identifier f;
identifier crtc_state;
identifier plane, plane_state, state;
expression e;
@@

f(struct drm_crtc_state *crtc_state)
{
...
struct drm_atomic_state *state = e;
<+...
(
- FUNCS->atomic_disable(plane, plane_state)
+ FUNCS->atomic_disable(plane, state)
|
- FUNCS->atomic_update(plane, plane_state)
+ FUNCS->atomic_update(plane, state)
)
...+>
}

@@
identifier plane_atomic_func.func;
identifier plane;
symbol state;
@@

func(struct drm_plane *plane,
- struct drm_plane_state *state)
+ struct drm_plane_state *old_plane_state)
{
<...
- state
+ old_plane_state
...>
}

@ ignores_old_state @
identifier plane_atomic_func.func;
identifier plane, old_state;
@@

func(struct drm_plane *plane, struct drm_plane_state *old_state)
{
... when != old_state
}

@ adds_old_state depends on plane_atomic_func && !ignores_old_state @
identifier plane_atomic_func.func;
identifier plane, plane_state;
@@

func(struct drm_plane *plane, struct drm_plane_state *plane_state)
{
+ struct drm_plane_state *plane_state = drm_atomic_get_old_plane_state(state, plane);
...
}

@ depends on plane_atomic_func @
identifier plane_atomic_func.func;
identifier plane, plane_state;
@@

func(struct drm_plane *plane,
- struct drm_plane_state *plane_state
+ struct drm_atomic_state *state
)
{ ... }

@ include depends on adds_old_state @
@@

#include <drm/drm_atomic.h>

@ no_include depends on !include && adds_old_state @
@@

+ #include <drm/drm_atomic.h>
#include <drm/...>

@@
identifier plane_atomic_func.func;
identifier plane, state;
identifier plane_state;
@@

func(struct drm_plane *plane, struct drm_atomic_state *state) {
...
struct drm_plane_state *plane_state = drm_atomic_get_old_plane_state(state, plane);
<+...
- plane_state->state
+ state
...+>
}

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210219120032.260676-9-maxime@cerno.tech

drm: Rename plane->state variables in atomic update and disable

Some drivers are storing the plane->state pointer in atomic_update and
atomic_disable in a variable simply called state, while the state passed
as an argument is called old_state.

In order to ease subsequent reworks and to avoid confusing or
inconsistent names, let's rename those variables to new_state.

This was done using the following coccinelle script, plus some manual
changes for mtk and tegra.

@ plane_atomic_func @
identifier helpers;
identifier func;
@@

(
static const struct drm_plane_helper_funcs helpers = {
...,
.atomic_disable = func,
...,
};
|
static const struct drm_plane_helper_funcs helpers = {
...,
.atomic_update = func,
...,
};
)

@ moves_new_state_old_state @
identifier plane_atomic_func.func;
identifier plane;
symbol old_state;
symbol state;
@@

func(struct drm_plane *plane, struct drm_plane_state *old_state)
{
...
- struct drm_plane_state *state = plane->state;
+ struct drm_plane_state *new_state = plane->state;
...
}

@ depends on moves_new_state_old_state @
identifier plane_atomic_func.func;
identifier plane;
identifier old_state;
symbol state;
@@

func(struct drm_plane *plane, struct drm_plane_state *old_state)
{
<...
- state
+ new_state
...>
}

@ moves_new_state_oldstate @
identifier plane_atomic_func.func;
identifier plane;
symbol oldstate;
symbol state;
@@

func(struct drm_plane *plane, struct drm_plane_state *oldstate)
{
...
- struct drm_plane_state *state = plane->state;
+ struct drm_plane_state *newstate = plane->state;
...
}

@ depends on moves_new_state_oldstate @
identifier plane_atomic_func.func;
identifier plane;
identifier old_state;
symbol state;
@@

func(struct drm_plane *plane, struct drm_plane_state *old_state)
{
<...
- state
+ newstate
...>
}

@ moves_new_state_old_pstate @
identifier plane_atomic_func.func;
identifier plane;
symbol old_pstate;
symbol state;
@@

func(struct drm_plane *plane, struct drm_plane_state *old_pstate)
{
...
- struct drm_plane_state *state = plane->state;
+ struct drm_plane_state *new_pstate = plane->state;
...
}

@ depends on moves_new_state_old_pstate @
identifier plane_atomic_func.func;
identifier plane;
identifier old_pstate;
symbol state;
@@

func(struct drm_plane *plane, struct drm_plane_state *old_pstate)
{
<...
- state
+ new_pstate
...>
}

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210219120032.260676-8-maxime@cerno.tech

drm: Use the state pointer directly in planes atomic_check

Now that atomic_check takes the global atomic state as a parameter, we
don't need to go through the pointer in the plane state.

This was done using the following coccinelle script:

@ plane_atomic_func @
identifier helpers;
identifier func;
@@

static struct drm_plane_helper_funcs helpers = {
...,
.atomic_check = func,
...,
};

@@
identifier plane_atomic_func.func;
identifier plane, state;
identifier plane_state;
@@

func(struct drm_plane *plane, struct drm_atomic_state *state) {
...
- struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state, plane);
<... when != plane_state
- plane_state->state
+ state
...>
}

@@
identifier plane_atomic_func.func;
identifier plane, state;
identifier plane_state;
@@

func(struct drm_plane *plane, struct drm_atomic_state *state) {
...
struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state, plane);
<...
- plane_state->state
+ state
...>
}

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210219120032.260676-5-maxime@cerno.tech

drm/atomic: Pass the full state to planes atomic_check

The current atomic helpers have either their object state being passed as
an argument or the full atomic state.

The former is the pattern that was done at first, before switching to the
latter for new hooks or when it was needed.

Let's convert all the remaining helpers to provide a consistent
interface, starting with the planes atomic_check.

The conversion was done using the coccinelle script below plus some
manual changes for vmwgfx, built tested on all the drivers.

@@
identifier plane, plane_state;
symbol state;
@@

struct drm_plane_helper_funcs {
...
int (*atomic_check)(struct drm_plane *plane,
- struct drm_plane_state *plane_state);
+ struct drm_atomic_state *state);
...
}

@ plane_atomic_func @
identifier helpers;
identifier func;
@@

static const struct drm_plane_helper_funcs helpers = {
...,
.atomic_check = func,
...,
};

@@
struct drm_plane_helper_funcs *FUNCS;
identifier f;
identifier dev;
identifier plane, plane_state, state;
@@

f(struct drm_device *dev, struct drm_atomic_state *state)
{
<+...
- FUNCS->atomic_check(plane, plane_state)
+ FUNCS->atomic_check(plane, state)
...+>
}

@ ignores_new_state @
identifier plane_atomic_func.func;
identifier plane, new_plane_state;
@@

func(struct drm_plane *plane, struct drm_plane_state *new_plane_state)
{
... when != new_plane_state
}

@ adds_new_state depends on plane_atomic_func && !ignores_new_state @
identifier plane_atomic_func.func;
identifier plane, new_plane_state;
@@

func(struct drm_plane *plane, struct drm_plane_state *new_plane_state)
{
+ struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, plane);
...
}

@ depends on plane_atomic_func @
identifier plane_atomic_func.func;
identifier plane, new_plane_state;
@@

func(struct drm_plane *plane,
- struct drm_plane_state *new_plane_state
+ struct drm_atomic_state *state
)
{ ... }

@ include depends on adds_new_state @
@@

#include <drm/drm_atomic.h>

@ no_include depends on !include && adds_new_state @
@@

+ #include <drm/drm_atomic.h>
#include <drm/...>

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210219120032.260676-4-maxime@cerno.tech

drm: Rename plane atomic_check state names

Most drivers call the argument to the plane atomic_check hook simply
state, which is going to conflict with the global atomic state in a
later rework. Let's rename it to new_plane_state (or new_state depending
on the convention used in the driver).

This was done using the coccinelle script below, and built tested:

@ plane_atomic_func @
identifier helpers;
identifier func;
@@

static const struct drm_plane_helper_funcs helpers = {
.atomic_check = func,
};

@ has_old_state @
identifier plane_atomic_func.func;
identifier plane;
expression e;
symbol old_state;
symbol state;
@@

func(struct drm_plane *plane, struct drm_plane_state *state)
{
...
struct drm_plane_state *old_state = e;
...
}

@ depends on has_old_state @
identifier plane_atomic_func.func;
identifier plane;
symbol old_state;
@@

func(struct drm_plane *plane,
- struct drm_plane_state *state
+ struct drm_plane_state *new_state
)
{
<+...
- state
+ new_state
...+>
}

@ has_state @
identifier plane_atomic_func.func;
identifier plane;
symbol state;
@@

func(struct drm_plane *plane, struct drm_plane_state *state)
{
...
}

@ depends on has_state @
identifier plane_atomic_func.func;
identifier plane;
symbol old_state;
@@

func(struct drm_plane *plane,
- struct drm_plane_state *state
+ struct drm_plane_state *new_plane_state
)
{
<+...
- state
+ new_plane_state
...+>
}

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210219120032.260676-2-maxime@cerno.tech

drm/ast: Move all of the cursor-update functionality to atomic_update

We used to update the cursor image in prepare_fb. Move all this code to
atomic_update (where it belongs). The generic helper for shadow-buffered
planes now implement the cursor plane's prepare_fb.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210209134632.12157-11-tzimmermann@suse.de

drm/ast: Store each HW cursor offset after pinning the rsp BO

As HW cursor BOs never move, we can store the offset in VRAM in the
cursor-plane's HWC state. This removes the last possible source of
runtime errors from atomic_update.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210209134632.12157-10-tzimmermann@suse.de

drm/ast: Map HW cursor BOs permanently

The BOs of the hardware cursor are now mapped permanently while the
cursor plane is being used. This reduces the CPU overhead of the cursor
plane's atomic_update function.

The change also resolves a problem with the vmap call in the commit tail.
The vmap implementation could acquire the DMA reservation lock on the
BO, which is not allowed that late in the atomic update. Removing the
vmap call from atomic_update fixes the issue.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210209134632.12157-9-tzimmermann@suse.de

drm/ast: Store cursor BOs in cursor plane

The cursor uses two BOs in video RAM to implement double buffering. Store
both in struct ast_cursor_plane.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210209134632.12157-8-tzimmermann@suse.de

drm/ast: Add cursor-plane data structure

Cursor state is currently located throughout struct ast_private. Having
struct ast_cursor_plane as dedicated data structure for cursors helps to
organize the modesetting code.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210209134632.12157-7-tzimmermann@suse.de

drm/ast: Inline ast cursor-update functions into modesetting code

The logic for cursor updates is now located in the cursor plane's
modesetting code. A number of helper functions remain to modify the
rsp registers and image.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210209134632.12157-6-tzimmermann@suse.de

drm/ast: Allocate HW cursor BOs during cursor-plane initialization

The BOs are eventually released by the cursor plane's destroy callback.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210209134632.12157-5-tzimmermann@suse.de

drm/ast: Initialize planes in helper functions

This change will help with inlining cursor functions into modesetting
code. The primary plane's field used to be cleared with memset(). This
has been dropped as the memory is always allocated with kzalloc().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210209134632.12157-4-tzimmermann@suse.de

drm/ast: Fix invalid usage of AST_MAX_HWC_WIDTH in cursor atomic_check

Use AST_MAX_HWC_HEIGHT for setting offset_y in the cursor plane's
atomic_check. The code used AST_MAX_HWC_WIDTH instead. This worked
because both constants has the same value.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210209134632.12157-3-tzimmermann@suse.de

drm/ast: Remove references to struct drm_device.pdev

Using struct drm_device.pdev is deprecated. Convert ast to struct
drm_device.dev. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20201201103542.2182-4-tzimmermann@suse.de

drm: automatic legacy gamma support

To support legacy gamma ioctls the drivers need to set
drm_crtc_funcs.gamma_set either to a custom implementation or to
drm_atomic_helper_legacy_gamma_set. Most of the atomic drivers do the
latter.

We can simplify this by making the core handle it automatically.

Move the drm_atomic_helper_legacy_gamma_set() functionality into
drm_color_mgmt.c to make drm_mode_gamma_set_ioctl() use
drm_crtc_funcs.gamma_set if set or GAMMA_LUT property if not.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Philippe Cornu <philippe.cornu@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201211114237.213288-2-tomi.valkeinen@ti.com

drm/ast: Reload gamma LUT after changing primary plane's color format

The gamma LUT has to be reloaded after changing the primary plane's
color format. This used to be done implicitly by the CRTC atomic_enable()
helper after updating the primary plane. With the recent reordering of
the steps, the primary plane's setup was moved last and invalidated
the gamma LUT. Fix this by setting the LUT from within atomic_flush().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Fixes: 2f0ddd89fe32 ("drm/ast: Enable CRTC before planes")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20200922144655.23624-1-tzimmermann@suse.de
(cherry-picked from 8e3784dfef8a03143b13e7e4011f276a954f1bc6)

drm: Use state helper instead of CRTC state pointer

Many drivers reference the crtc->pointer in order to get the current CRTC
state in their atomic_begin or atomic_flush hooks, which would be the new
CRTC state in the global atomic state since _swap_state happened when those
hooks are run.

Use the drm_atomic_get_new_crtc_state helper to get that state to make it
more obvious.

This was made using the coccinelle script below:

@ crtc_atomic_func @
identifier helpers;
identifier func;
@@

(
static struct drm_crtc_helper_funcs helpers = {
...,
.atomic_begin = func,
...,
};
|
static struct drm_crtc_helper_funcs helpers = {
...,
.atomic_flush = func,
...,
};
)

@@
identifier crtc_atomic_func.func;
identifier crtc, state;
symbol crtc_state;
expression e;
@@

func(struct drm_crtc *crtc, struct drm_atomic_state *state) {
...
- struct tegra_dc_state *crtc_state = e;
+ struct tegra_dc_state *dc_state = e;
<+...
- crtc_state
+ dc_state
...+>
}

@@
identifier crtc_atomic_func.func;
identifier crtc, state;
symbol crtc_state;
expression e;
@@

func(struct drm_crtc *crtc, struct drm_atomic_state *state) {
...
- struct mtk_crtc_state *crtc_state = e;
+ struct mtk_crtc_state *mtk_crtc_state = e;
<+...
- crtc_state
+ mtk_crtc_state
...+>
}

@ replaces_new_state @
identifier crtc_atomic_func.func;
identifier crtc, state, crtc_state;
@@

func(struct drm_crtc *crtc, struct drm_atomic_state *state) {
...
- struct drm_crtc_state *crtc_state = crtc->state;
+ struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
...
}

@@
identifier crtc_atomic_func.func;
identifier crtc, state, crtc_state;
@@

func(struct drm_crtc *crtc, struct drm_atomic_state *state) {
struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
...
- crtc->state
+ crtc_state
...
}

@ adds_new_state @
identifier crtc_atomic_func.func;
identifier crtc, state;
@@

func(struct drm_crtc *crtc, struct drm_atomic_state *state) {
+ struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
...
- crtc->state
+ crtc_state
...
}

@ include depends on adds_new_state || replaces_new_state @
@@

#include <drm/drm_atomic.h>

@ no_include depends on !include && (adds_new_state || replaces_new_state) @
@@

+ #include <drm/drm_atomic.h>
#include <drm/...>

Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: "James (Qian) Wang" <james.qian.wang@arm.com>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Mihail Atanassov <mihail.atanassov@arm.com>
Cc: Brian Starkey <brian.starkey@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Paul Cercueil <paul@crapouillou.net>
Cc: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Sandy Huang <hjc@rock-chips.com>
Cc: "Heiko Stübner" <heiko@sntech.de>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201105164518.392891-1-maxime@cerno.tech

drm/atomic: Pass the full state to CRTC atomic begin and flush

The current atomic helpers have either their object state being passed as
an argument or the full atomic state.

The former is the pattern that was done at first, before switching to the
latter for new hooks or when it was needed.

Let's start convert all the remaining helpers to provide a consistent
interface, starting with the CRTC's atomic_begin and atomic_flush.

The conversion was done using the coccinelle script below, built tested on
all the drivers and actually tested on vc4.

virtual report

@@
struct drm_crtc_helper_funcs *FUNCS;
identifier old_crtc_state, old_state;
identifier crtc;
identifier f;
@@

f(struct drm_crtc_state *old_crtc_state)
{
...
struct drm_atomic_state *old_state = old_crtc_state->state;
<...
- FUNCS->atomic_begin(crtc, old_crtc_state);
+ FUNCS->atomic_begin(crtc, old_state);
...>
}

@@
struct drm_crtc_helper_funcs *FUNCS;
identifier old_crtc_state, old_state;
identifier crtc;
identifier f;
@@

f(struct drm_crtc_state *old_crtc_state)
{
...
struct drm_atomic_state *old_state = old_crtc_state->state;
<...
- FUNCS->atomic_flush(crtc, old_crtc_state);
+ FUNCS->atomic_flush(crtc, old_state);
...>
}

@@
struct drm_crtc_helper_funcs *FUNCS;
struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
identifier dev, state;
identifier f;
@@

f(struct drm_device *dev, struct drm_atomic_state *state, ...)
{
<...
- FUNCS->atomic_begin(crtc, crtc_state);
+ FUNCS->atomic_begin(crtc, state);
...>
}

@@
struct drm_crtc_helper_funcs *FUNCS;
struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
identifier dev, state;
identifier f;
@@

f(struct drm_device *dev, struct drm_atomic_state *state, ...)
{
<...
- FUNCS->atomic_flush(crtc, crtc_state);
+ FUNCS->atomic_flush(crtc, state);
...>
}

@@
identifier crtc, old_state;
@@

struct drm_crtc_helper_funcs {
...
- void (*atomic_begin)(struct drm_crtc *crtc, struct drm_crtc_state *old_state);
+ void (*atomic_begin)(struct drm_crtc *crtc, struct drm_atomic_state *state);
...
- void (*atomic_flush)(struct drm_crtc *crtc, struct drm_crtc_state *old_state);
+ void (*atomic_flush)(struct drm_crtc *crtc, struct drm_atomic_state *state);
...
}

@ crtc_atomic_func @
identifier helpers;
identifier func;
@@

(
static struct drm_crtc_helper_funcs helpers = {
...,
.atomic_begin = func,
...,
};
|
static struct drm_crtc_helper_funcs helpers = {
...,
.atomic_flush = func,
...,
};
)

@ ignores_old_state @
identifier crtc_atomic_func.func;
identifier crtc, old_state;
@@

void func(struct drm_crtc *crtc,
struct drm_crtc_state *old_state)
{
... when != old_state
}

@ adds_old_state depends on crtc_atomic_func && !ignores_old_state @
identifier crtc_atomic_func.func;
identifier crtc, old_state;
@@

void func(struct drm_crtc *crtc, struct drm_crtc_state *old_state)
{
+ struct drm_crtc_state *old_state = drm_atomic_get_old_crtc_state(state, crtc);
...
}

@ depends on crtc_atomic_func @
identifier crtc_atomic_func.func;
expression E;
type T;
@@

void func(...)
{
...
- T state = E;
+ T crtc_state = E;
<+...
- state
+ crtc_state
...+>

}

@ depends on crtc_atomic_func @
identifier crtc_atomic_func.func;
type T;
@@

void func(...)
{
...
- T state;
+ T crtc_state;
<+...
- state
+ crtc_state
...+>

}

@@
identifier old_state;
identifier crtc;
@@

void vc4_hvs_atomic_flush(struct drm_crtc *crtc,
- struct drm_crtc_state *old_state
+ struct drm_atomic_state *state
)
{
+ struct drm_crtc_state *old_state = drm_atomic_get_old_crtc_state(state, crtc);
...
}

@@
identifier old_state;
identifier crtc;
@@

void vc4_hvs_atomic_flush(struct drm_crtc *crtc,
- struct drm_crtc_state *old_state
+ struct drm_atomic_state *state
);

@@
identifier old_state;
identifier crtc;
@@

void vmw_du_crtc_atomic_begin(struct drm_crtc *crtc,
- struct drm_crtc_state *old_state
+ struct drm_atomic_state *state
)
{
...
}

@@
identifier old_state;
identifier crtc;
@@

void vmw_du_crtc_atomic_begin(struct drm_crtc *crtc,
- struct drm_crtc_state *old_state
+ struct drm_atomic_state *state
);

@@
identifier old_state;
identifier crtc;
@@

void vmw_du_crtc_atomic_flush(struct drm_crtc *crtc,
- struct drm_crtc_state *old_state
+ struct drm_atomic_state *state
)
{
...
}

@@
identifier old_state;
identifier crtc;
@@

void vmw_du_crtc_atomic_flush(struct drm_crtc *crtc,
- struct drm_crtc_state *old_state
+ struct drm_atomic_state *state
);

@ depends on crtc_atomic_func @
identifier crtc_atomic_func.func;
identifier old_state;
identifier crtc;
@@

void func(struct drm_crtc *crtc,
- struct drm_crtc_state *old_state
+ struct drm_atomic_state *state
)
{ ... }

@ include depends on adds_old_state @
@@

#include <drm/drm_atomic.h>

@ no_include depends on !include && adds_old_state @
@@

+ #include <drm/drm_atomic.h>
#include <drm/...>

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20201028123222.1732139-2-maxime@cerno.tech

drm/atomic: Pass the full state to CRTC atomic_check

The current atomic helpers have either their object state being passed as
an argument or the full atomic state.

The former is the pattern that was done at first, before switching to the
latter for new hooks or when it was needed.

Let's start convert all the remaining helpers to provide a consistent
interface, starting with the CRTC's atomic_check.

The conversion was done using the coccinelle script below,
built tested on all the drivers and actually tested on vc4.

virtual report

@@
struct drm_crtc_helper_funcs *FUNCS;
struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
identifier dev, state;
identifier ret, f;
@@

f(struct drm_device *dev, struct drm_atomic_state *state)
{
<...
- ret = FUNCS->atomic_check(crtc, crtc_state);
+ ret = FUNCS->atomic_check(crtc, state);
...>
}

@@
identifier crtc, new_state;
@@

struct drm_crtc_helper_funcs {
...
- int (*atomic_check)(struct drm_crtc *crtc, struct drm_crtc_state *new_state);
+ int (*atomic_check)(struct drm_crtc *crtc, struct drm_atomic_state *state);
...
}

@ crtc_atomic_func @
identifier helpers;
identifier func;
@@

static struct drm_crtc_helper_funcs helpers = {
...,
.atomic_check = func,
...,
};

@ ignores_new_state @
identifier crtc_atomic_func.func;
identifier crtc, new_state;
@@

int func(struct drm_crtc *crtc,
struct drm_crtc_state *new_state)
{
... when != new_state
}

@ adds_new_state depends on crtc_atomic_func && !ignores_new_state @
identifier crtc_atomic_func.func;
identifier crtc, new_state;
@@

int func(struct drm_crtc *crtc, struct drm_crtc_state *new_state)
{
+ struct drm_crtc_state *new_state = drm_atomic_get_new_crtc_state(state, crtc);
...
}

@ depends on crtc_atomic_func @
identifier crtc_atomic_func.func;
expression E;
type T;
@@

int func(...)
{
...
- T state = E;
+ T crtc_state = E;
<+...
- state
+ crtc_state
...+>
}

@ depends on crtc_atomic_func @
identifier crtc_atomic_func.func;
type T;
@@

int func(...)
{
...
- T state;
+ T crtc_state;
<+...
- state
+ crtc_state
...+>
}

@ depends on crtc_atomic_func @
identifier crtc_atomic_func.func;
identifier new_state;
identifier crtc;
@@

int func(struct drm_crtc *crtc,
- struct drm_crtc_state *new_state
+ struct drm_atomic_state *state
)
{ ... }

@@
identifier new_state;
identifier crtc;
@@

int vmw_du_crtc_atomic_check(struct drm_crtc *crtc,
- struct drm_crtc_state *new_state
+ struct drm_atomic_state *state
)
{
+ struct drm_crtc_state *new_state = drm_atomic_get_new_crtc_state(state, crtc);
...
}

@@
identifier new_state;
identifier crtc;
@@

int vmw_du_crtc_atomic_check(struct drm_crtc *crtc,
- struct drm_crtc_state *new_state
+ struct drm_atomic_state *state
);

@ include depends on adds_new_state @
@@

#include <drm/drm_atomic.h>

@ no_include depends on !include && adds_new_state @
@@

+ #include <drm/drm_atomic.h>
#include <drm/...>

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20201028123222.1732139-1-maxime@cerno.tech

drm/atomic: Pass the full state to CRTC atomic enable/disable

If the CRTC driver ever needs to access the full DRM state, it can't do so
at atomic_enable / atomic_disable time since drm_atomic_helper_swap_state
will have cleared the pointer from the struct drm_crtc_state to the struct
drm_atomic_state before calling those hooks.

In order to allow that, let's pass the full DRM state to atomic_enable and
atomic_disable. The conversion was done using the coccinelle script below,
built tested on all the drivers and actually tested on vc4.

virtual report

@@
struct drm_crtc_helper_funcs *FUNCS;
identifier dev, state;
identifier crtc, crtc_state;
@@

disable_outputs(struct drm_device *dev, struct drm_atomic_state *state)
{
<...
- FUNCS->atomic_disable(crtc, crtc_state);
+ FUNCS->atomic_disable(crtc, state);
...>
}

@@
struct drm_crtc_helper_funcs *FUNCS;
identifier dev, state;
identifier crtc, crtc_state;
@@

drm_atomic_helper_commit_modeset_enables(struct drm_device *dev, struct drm_atomic_state *state)
{
<...
- FUNCS->atomic_enable(crtc, crtc_state);
+ FUNCS->atomic_enable(crtc, state);
...>
}

@@
identifier crtc, old_state;
@@

struct drm_crtc_helper_funcs {
...
- void (*atomic_enable)(struct drm_crtc *crtc, struct drm_crtc_state *old_state);
+ void (*atomic_enable)(struct drm_crtc *crtc, struct drm_atomic_state *state);
...
- void (*atomic_disable)(struct drm_crtc *crtc, struct drm_crtc_state *old_state);
+ void (*atomic_disable)(struct drm_crtc *crtc, struct drm_atomic_state *state);
...
}

@ crtc_atomic_func @
identifier helpers;
identifier func;
@@

(
static struct drm_crtc_helper_funcs helpers = {
...,
.atomic_enable = func,
...,
};
|
static struct drm_crtc_helper_funcs helpers = {
...,
.atomic_disable = func,
...,
};
)

@ ignores_old_state @
identifier crtc_atomic_func.func;
identifier crtc, old_state;
@@

void func(struct drm_crtc *crtc,
struct drm_crtc_state *old_state)
{
... when != old_state
}

@ adds_old_state depends on crtc_atomic_func && !ignores_old_state @
identifier crtc_atomic_func.func;
identifier crtc, old_state;
@@

void func(struct drm_crtc *crtc, struct drm_crtc_state *old_state)
{
+ struct drm_crtc_state *old_state = drm_atomic_get_old_crtc_state(state, crtc);
...
}

@ depends on crtc_atomic_func @
identifier crtc_atomic_func.func;
expression E;
type T;
@@

void func(...)
{
...
- T state = E;
+ T crtc_state = E;
<+...
- state
+ crtc_state
...+>

}

@ depends on crtc_atomic_func @
identifier crtc_atomic_func.func;
type T;
@@

void func(...)
{
...
- T state;
+ T crtc_state;
<+...
- state
+ crtc_state
...+>

}

@ depends on crtc_atomic_func @
identifier crtc_atomic_func.func;
identifier old_state;
identifier crtc;
@@

void func(struct drm_crtc *crtc,
- struct drm_crtc_state *old_state
+ struct drm_atomic_state *state
)
{ ... }

@ include depends on adds_old_state @
@@

#include <drm/drm_atomic.h>

@ no_include depends on !include && adds_old_state @
@@

+ #include <drm/drm_atomic.h>
#include <drm/...>

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/845aa10ef171fc0ea060495efef142a0c13f7870.1602161031.git-series.maxime@cerno.tech

drm/ast: Reload gamma LUT after changing primary plane's color format

The gamma LUT has to be reloaded after changing the primary plane's
color format. This used to be done implicitly by the CRTC atomic_enable()
helper after updating the primary plane. With the recent reordering of
the steps, the primary plane's setup was moved last and invalidated
the gamma LUT. Fix this by setting the LUT from within atomic_flush().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Fixes: 2f0ddd89fe32 ("drm/ast: Enable CRTC before planes")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20200922144655.23624-1-tzimmermann@suse.de

drm/ast: Enable CRTC before planes

An active cursor plane requires a valid display mode. Change the
commit_tail callback, so that it sets up the CRTC's mode before
updating planes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200914072236.19398-5-tzimmermann@suse.de

drm/ast: Program display mode in CRTC's atomic_enable()

This change simplifies ast's modesetting code. The display mode
is now programmed from within the CRTC's atomic_enable(), which
only runs if we actually want to program the mode.

Corresponding code in atomic_flush() is being removed. Also removed
is atomic_begin(), which serves no purpose at all.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200914072236.19398-4-tzimmermann@suse.de

drm/ast: Disable planes while switching display modes

The ast HW cursor requires the primary plane and CRTC to display at
a valid mode and format. This is not the case while switching
display modes, which can lead to the screen turing permanently dark.

As a workaround, the ast driver now disables active planes while the
mode or format switch takes place. It also synchronizes with the vertical
refresh to give CRTC and planes some time to catch up on each other.
The active planes planes (primary or cursor) will be re-enabled by
each plane's atomic_update() function.

v3:
* move the logic into the CRTC's atomic_disable function
v2:
* move the logic into the commit-tail function

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200914072236.19398-3-tzimmermann@suse.de

drm/ast: Set format registers in primary plane's update

The atomic modesetting code tried to distinguish format changes from
full modesetting operations. But the implementation was buggy and the
format registers were often updated even for simple pageflips.

Fix this problem by handling format changes in the primary plane's
update function.

v3:
* program format in primary plane's update function

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200914072236.19398-2-tzimmermann@suse.de

drm/ast: Embed struct drm_device in struct ast_private

Turns struct ast_private into a subclass of struct drm_device by
embedding the latter. This allows for using DRM's managed device
allocation.

The use of struct drm_device.dev_private is deprecated. The patch
converts the last remaining users to to_ast_private().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200730135206.30239-7-tzimmermann@suse.de

drm/ast: Don't use ast->dev if dev is available

Several places in ast use ast->dev, when a dev pointer is already
available within the function. Remove the extra indirection. No
functional changes made.

This is just a small cleanup before embedding the DRM device instance
in struct ast_private.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200730135206.30239-6-tzimmermann@suse.de

drm/ast: Replace struct_drm_device.dev_private with to_ast_private()

The ast code still references dev_private in several place when looking
up the ast device structure. Convert the remaining locations to use
to_ast_private().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200730135206.30239-5-tzimmermann@suse.de

drm/ast: Embed CRTC and connector in struct ast_private

Only single instances of CRTC and connector are supported per
device. Embed both in ast's structure and remove the individual
memory allocations. DRM's CRTC cleanup helpers replace the rsp.
destroy function in ast.

While at it, also convert to_ast_connector() to a function.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200730135206.30239-2-tzimmermann@suse.de

drm/ast: Initialize mode setting in ast_mode_config_init()

There's modesetting init code in ast_main.c. Move it to ast_mode.c and
merge it with the modesetting init code in ast_mode_init(). The result
is ast_mode_config_init(), which initalizes the whole modesetting.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702115029.5281-15-tzimmermann@suse.de

drm/ast: Use managed mode-config init

Using drmm_mode_config_init() sets up managed release of modesetting
resources. The existing modesetting's finalizer is empty, so remove it.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702115029.5281-14-tzimmermann@suse.de

drm/ast: Replace struct ast_crtc with struct drm_crtc

Struct ast_crtc has been cleaned up and it's now a wrapper around the
DRM CRTC structure struct drm_crtc. This patch converts the driver to
struct drm_crtc and removes struct ast_crtc.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702115029.5281-13-tzimmermann@suse.de

drm/ast: Init cursors before creating modesetting structures

The cursor helpers reserve buffer objects in VRAM and update their
content. So although tied to modesetting, cursor helpers are more
of a memory manager. The modesetting's cursor plane requires this
functionality, so initialize cursors before modesetting.

While at it, also add an error check for ast_cursor_init().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702115029.5281-12-tzimmermann@suse.de

drm/ast: Managed cursor release

Register a release function to finalize cursors. The _fini() function
gets un-exported from the source file.

The function ast_mode_fini() is now empty and will be removed by a
later patch.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702115029.5281-11-tzimmermann@suse.de

drm/ast: Add helper to hide cursor

As the inverse to ast_cursor_show(), ast_cursor_hide() disables the
HW cursor.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702115029.5281-9-tzimmermann@suse.de

drm/ast: Don't enable HW cursors twice during atomic update

The ast_cursor_show() helper enables the cursor to be displayed. No need
to repeat that operation in the plane's atomic-update function.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702115029.5281-8-tzimmermann@suse.de

drm/ast: Replace ast_cursor_move() with ast_cursor_show()

Having a cursor move function is misleading, as it actually enables the
cursor's image for displaying. So rename it to ast_cursor_show(). It's
semantics is to show a cursor at the specified location on the screen.
The displayed cursor is always the image in the cursor front BO.

This change also simplifies struct ast_crtc to being a mere wrapper around
around struct drm_crtc. It will be removed by a later patch.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702115029.5281-7-tzimmermann@suse.de

drm/ast: Move cursor pageflip into helper

The new helper ast_cursor_page_flip() switches the cursor's front and
back BOs. This simplifies the cursor plane's update helper.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702115029.5281-6-tzimmermann@suse.de

drm/ast: Move cursor fb pinning and mapping into helper

The new helper ast_cursor_blit() updates a cursor's backbuffer HW
BO from a framebuffer structure. The cursor plane's prepare_fb()
function now uses the new interface.

Pinning and mapping of BOs is done automatically by the helper. This
includes the source BO, which was not pinned by the original code in
prepare_fb().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702115029.5281-4-tzimmermann@suse.de

drm/ast: Pass struct ast_private instance to cursor init/fini functions

Removes some typecasting.

v2:
* use to_ast_private() instead of struct drm_device.dev_private

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702115029.5281-3-tzimmermann@suse.de

drm/ast: Move cursor functions to ast_cursor.c

The cursor manipulation functions are unrelated to modesetting. Move
them into their own file.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702115029.5281-2-tzimmermann@suse.de

drm/ast: Use per-device logging macros

Converts the ast driver to drm_info(), drm_err() and drm_WARN_*(). No
functional changes are made.

v2:
* also convert WARN_*() macros

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200617080340.29584-5-tzimmermann@suse.de

drm/ast: Upcast from DRM device to ast structure via to_ast_private()

All upcasting from struct drm_device to struct ast_private is now
performed via to_ast_private(). Using struct drm_device.dev_private
is deprecated. The ast variable in ast_crtc_helper_atomic_check() is
unused, so removed it.

v2:
* fix typo in commit message

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200617080340.29584-4-tzimmermann@suse.de

drm/ast: Remove unused code paths for AST 1180

The ast driver contains code paths for AST 1180 chips. The chip is not
supported and the rsp code has never been tested. Simplify the driver by
removing the AST 1180 code.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200617080340.29584-2-tzimmermann@suse.de

drm/ast: fix missing break in switch statement for format->cpp[0] case 4

Currently the switch statement for format->cpp[0] value 4 assigns
color_index which is never read again and then falls through to the
default case and returns. This looks like a missing break statement
bug. Fix this by adding a break statement.

Addresses-Coverity: ("Unused value")
Fixes: 259d14a76a27 ("drm/ast: Split ast_set_vbios_mode_info()")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20200610115804.1132338-1-colin.king@canonical.com

drm/ast: Don't check new mode if CRTC is being disabled

Suspending failed because there's no mode if the CRTC is being
disabled. Early-out in this case. This fixes runtime PM for ast.

v3:
* fixed commit message
v2:
* added Tested-by/Reported-by tags
* added Fixes tags and CC (Sam)
* improved comment

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reported-by: Cary Garrett <cogarre@gmail.com>
Tested-by: Cary Garrett <cogarre@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Fixes: b48e1b6ffd28 ("drm/ast: Add CRTC helpers for atomic modesetting")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: <stable@vger.kernel.org> # v5.6+
Link: https://patchwork.freedesktop.org/patch/msgid/20200507090640.21561-1-tzimmermann@suse.de

drm/ast: Make ast_primary_plane_helper_atomic_update static

Fix the following sparse warning:

drivers/gpu/drm/ast/ast_mode.c:564:6: warning:
symbol 'ast_primary_plane_helper_atomic_update'
was not declared. Should it be static?

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Samuel Zou <zou_wei@huawei.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1588819206-11406-1-git-send-email-zou_wei@huawei.com

drm/ast: remove duplicate assignment of ast_crtc_funcs member

The struct member 'set_config' was assigned twice:

static const struct drm_crtc_funcs ast_crtc_funcs = {
.reset = ast_crtc_reset,
.set_config = drm_crtc_helper_set_config,
......
.set_config = drm_atomic_helper_set_config,
......
};

Since the second one is which we use now in fact, we can remove the
first one.

This fixes the following coccicheck warning:

drivers/gpu/drm/ast/ast_mode.c:932:50-51: set_config: first occurrence
line 934, second occurrence line 937

Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20200429141010.8445-1-yanaijie@huawei.com

drm/ast: Drop explicit connector register/unregister

This is only needed for hotpluggable connectors set up after
drm_dev_register().

Reviewed-by: Thomas Zimemrmann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Emil Velikov <emil.velikov@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200415074034.175360-59-daniel.vetter@ffwll.ch

drm/ast: Allocate initial CRTC state of the correct size

The ast driver inherits from DRM's CRTC state, but still uses the atomic
helper for struct drm_crtc_funcs.reset, drm_atomic_helper_crtc_reset().

The helper only allocates enough memory for the core CRTC state. That
results in an out-ouf-bounds access when duplicating the initial CRTC
state. Simplified backtrace shown below:

[ 21.469321] ==================================================================
[ 21.469434] BUG: KASAN: slab-out-of-bounds in ast_crtc_atomic_duplicate_state+0x84/0x100 [ast]
[ 21.469445] Read of size 8 at addr ffff888036c1c5f8 by task systemd-udevd/382
[ 21.469451]
[ 21.469464] CPU: 2 PID: 382 Comm: systemd-udevd Tainted: G E 5.5.0-rc6-1-default+ #214
[ 21.469473] Hardware name: Sun Microsystems SUN FIRE X2270 M2/SUN FIRE X2270 M2, BIOS 2.05 07/01/2010
[ 21.469480] Call Trace:
[ 21.469501] dump_stack+0xb8/0x110
[ 21.469528] print_address_description.constprop.0+0x1b/0x1e0
[ 21.469557] ? ast_crtc_atomic_duplicate_state+0x84/0x100 [ast]
[ 21.469581] ? ast_crtc_atomic_duplicate_state+0x84/0x100 [ast]
[ 21.469597] __kasan_report.cold+0x1a/0x35
[ 21.469640] ? ast_crtc_atomic_duplicate_state+0x84/0x100 [ast]
[ 21.469665] kasan_report+0xe/0x20
[ 21.469693] ast_crtc_atomic_duplicate_state+0x84/0x100 [ast]
[ 21.469733] drm_atomic_get_crtc_state+0xbf/0x1c0
[ 21.469768] __drm_atomic_helper_set_config+0x81/0x5a0
[ 21.469803] ? drm_atomic_plane_check+0x690/0x690
[ 21.469843] ? drm_client_rotation+0xae/0x240
[ 21.469876] drm_client_modeset_commit_atomic+0x230/0x390
[ 21.469888] ? __mutex_lock+0x8f0/0xbe0
[ 21.469929] ? drm_client_firmware_config.isra.0+0xa60/0xa60
[ 21.469948] ? drm_client_modeset_commit_force+0x28/0x230
[ 21.470031] ? memset+0x20/0x40
[ 21.470078] drm_client_modeset_commit_force+0x90/0x230
[ 21.470110] drm_fb_helper_restore_fbdev_mode_unlocked+0x5f/0xc0
[ 21.470132] drm_fb_helper_set_par+0x59/0x70
[ 21.470155] fbcon_init+0x61d/0xad0
[ 21.470185] ? drm_fb_helper_restore_fbdev_mode_unlocked+0xc0/0xc0
[ 21.470232] visual_init+0x187/0x240
[ 21.470266] do_bind_con_driver+0x2e3/0x460
[ 21.470321] do_take_over_console+0x20a/0x290
[ 21.470371] do_fbcon_takeover+0x85/0x100
[ 21.470402] register_framebuffer+0x2fd/0x490
[ 21.470425] ? kzalloc.constprop.0+0x10/0x10
[ 21.470503] __drm_fb_helper_initial_config_and_unlock+0xf2/0x140
[ 21.470533] drm_fbdev_client_hotplug+0x162/0x250
[ 21.470563] drm_fbdev_generic_setup+0xd2/0x155
[ 21.470602] ast_driver_load+0x688/0x850 [ast]
<...>
[ 21.472625] ==================================================================

Allocating enough memory for struct ast_crtc_state in a custom ast CRTC
reset handler fixes the problem.

v2:
* implement according to drm_atomic_helper_crtc_reset()
* update state with __drm_atomic_helper_crtc_reset()

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 83be6a3ceb11 ("drm/ast: Introduce struct ast_crtc_state")
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Noralf Trønnes" <noralf@tronnes.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200130094012.32140-1-tzimmermann@suse.de

drm/ast: Use simple encoder

The ast driver uses an empty implementation for its encoder. Replace
the code with the generic simple encoder.

v2:
* rebase onto new simple-encoder interface

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200228081828.18463-3-tzimmermann@suse.de

drm/ast: Don't set struct drm_crtc_state.no_vblank explicitly

As ast does not initialize vblanking, atomic helpers initialize the
value of struct drm_crtc_state.no_vblank to be true. No need to set
it from within the driver.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200129120531.6891-4-tzimmermann@suse.de

drm/vram-helper: Remove BO device from public interface

TTM is an implementation detail of the VRAM helpers and therefore
shouldn't be exposed to the callers. There's only one correct value
for the BO device anyway, which is the one stored in the DRM device.

So remove struct ttm_bo_device from the VRAM-helper interface and
use the device's VRAM manager unconditionally. The GEM initializer
function fails if the VRAM manager has not been initialized.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200106125745.13797-8-tzimmermann@suse.de

drm/vram-helper: Remove interruptible flag from public interface

The flag 'interruptible', which is passed to various functions,
is always set to be false. Remove it and hard-code the value.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Suggested-by: Daniel Vetter <daniel@ffwll.ch>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200106125745.13797-7-tzimmermann@suse.de

drm/ast: Store primary-plane format in struct ast_crtc_state

Reading the primary plane's framebuffer from the CRTC's atomic_flush()
function is fragile as the plane state or framebuffer can be NULL.
Instead, we let the plane's atomic_check() store the framebuffer format
in the CRTC state. The CRTC always receives the framebuffer format that
is currently programmed, or NULL if no mode has been set yet.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202111557.15176-8-tzimmermann@suse.de

drm/ast: Store VBIOS mode info in struct ast_crtc_state

After looking up VBIOS mode information in CRTC's atomic_check(), we
can reuse it in atomic_flush(). No need for a second look-up.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202111557.15176-7-tzimmermann@suse.de

drm/ast: Introduce struct ast_crtc_state

AST-specific CRTC state can be placed in the new struct ast_crtc_state.
The atomic check functions of the CRTC and the primary plane will store
the VBIOS mode info and the framebuffer format here. The CRTC will consume
these during atomic_flush().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202111557.15176-6-tzimmermann@suse.de

drm/ast: Add plane atomic_check() functions

Introducing atomic_check() for priamry and cursor plane. The functions
validate the plane state and will later set format information for the
CRTC's atomic_flush().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202111557.15176-5-tzimmermann@suse.de

drm/ast: Clean up arguments of register functions

In preparation of an update of the primary-plane code, this patch
changes the arguments of several register-setting functions. No
functional changes are made. The function ast_set_dac_reg() has no
effect and therefore gets removed entirely.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202111557.15176-4-tzimmermann@suse.de

drm/ast: Enable and disable screen in primary-plane functions

Enabling and disabling the screen used to be done in the register
initialization and the DPMS function. None of these places is related
to the screen's output.

Now the primary plane's update and disable functions handle screen
display state. The primary plane can now be switched off without
displaying garbage.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202111557.15176-3-tzimmermann@suse.de

drm/ast: Move modesetting code to CRTC's atomic_flush()

When enabling the CRTC after waking up from a power-saving mode, the
primary plane's framebuffer might be NULL, which leads to a stack trace
as shown below.

[ 632.624608] BUG: kernel NULL pointer dereference, address: 0000000000000048
[ 632.624631] #PF: supervisor read access in kernel mode
[ 632.624639] #PF: error_code(0x0000) - not-present page
[ 632.624647] PGD 0 P4D 0
[ 632.624654] Oops: 0000 [#1] SMP PTI
[ 632.624662] CPU: 0 PID: 2082 Comm: gnome-shell Tainted: G E 5.4.0-rc7-1-default+ #114
[ 632.624673] Hardware name: Sun Microsystems SUN FIRE X2270 M2/SUN FIRE X2270 M2, BIOS 2.05 07/01/2010
[ 632.624689] RIP: 0010:ast_crtc_helper_atomic_enable+0x7d/0x680 [ast]
[ 632.624698] Code: 48 8b 80 e0 02 00 00 4c 8b 60 10 31 c0 f3 48 ab 48 8b 83 78 04 00 00 4c 89 ef 48 8d 70 18 e8 9a e9 55 ce 48 8b 83 78 04 00 00 <49> 8b 7c 24 48 4c 89 ea 4c 8d 44 24 28 48 8d 4c 24 20 48 8d 70 18
[ 632.624718] RSP: 0018:ffffbe9ec123fa40 EFLAGS: 00010246
[ 632.624726] RAX: ffff95a13cfd3400 RBX: ffff95a13cf32000 RCX: 0000000000000000
[ 632.624735] RDX: 0000000000000000 RSI: ffff95a13cfd34e8 RDI: ffffbe9ec123fb40
[ 632.624744] RBP: ffffbe9ec123fb80 R08: 0000000000000000 R09: 0000000000000003
[ 632.624753] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 632.624762] R13: ffffbe9ec123fa70 R14: ffff95a13beb7000 R15: ffff95a13cf32800
[ 632.624772] FS: 00007f6d2763e140(0000) GS:ffff95a134000000(0000) knlGS:0000000000000000
[ 632.624782] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 632.624790] CR2: 0000000000000048 CR3: 00000001192f8004 CR4: 00000000000206f0
[ 632.624800] Call Trace:
[ 632.624811] ? __lock_acquire+0x409/0x7c0
[ 632.624830] drm_atomic_helper_commit_modeset_enables+0x1af/0x200
[ 632.624840] drm_atomic_helper_commit_tail+0x32/0x70
[ 632.624849] commit_tail+0xc7/0x110
[ 632.624857] drm_atomic_helper_commit+0x121/0x130
[ 632.624867] drm_atomic_connector_commit_dpms+0xd7/0x100
[ 632.624878] set_property_atomic+0xaf/0x110
[ 632.624890] drm_mode_obj_set_property_ioctl+0xbb/0x190
[ 632.624899] ? drm_mode_obj_find_prop_id+0x40/0x40
[ 632.624909] drm_ioctl_kernel+0x86/0xd0
[ 632.624918] drm_ioctl+0x1e4/0x36b
[ 632.624925] ? drm_mode_obj_find_prop_id+0x40/0x40
[ 632.624939] do_vfs_ioctl+0x4bd/0x6e0
[ 632.624949] ksys_ioctl+0x5e/0x90
[ 632.624957] __x64_sys_ioctl+0x16/0x20
[ 632.624966] do_syscall_64+0x5a/0x220
[ 632.624976] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 632.624984] RIP: 0033:0x7f6d2b0de387
[ 632.624991] Code: 00 00 90 48 8b 05 f9 9a 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d c9 9a 0c 00 f7 d8 64 89 01 48
[ 632.625011] RSP: 002b:00007fffb49def38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 632.625021] RAX: ffffffffffffffda RBX: 00007fffb49def70 RCX: 00007f6d2b0de387
[ 632.625030] RDX: 00007fffb49def70 RSI: 00000000c01864ba RDI: 0000000000000009
[ 632.625040] RBP: 00000000c01864ba R08: 0000000000000000 R09: 00000000c0c0c0c0
[ 632.625049] R10: 0000000000000030 R11: 0000000000000246 R12: 000055bc367eb920
[ 632.625058] R13: 0000000000000009 R14: 0000000000000002 R15: 0000000000000000
[ 632.625071] Modules linked in: ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) ip_tables(E) x_tables(E) af_packet(E) scsi_transport_iscsi(E) dmi_sysfs(E) msr(E) xfs(E) intel_powerclamp(E) coretemp(E) k)
[ 632.625185] CR2: 0000000000000048

The STR is

* start gdm and wait for it to switch off the display
* wake up the display by pressing a key

CRTC modesetting depends on the new state of the CRTC and the primary
plane's framebuffer. The bugfix moves the modesetting code into the
CRTC's atomic_flush() function, where it is protected from the plane's
framebuffer being NULL.

The CRTC's atomic-enable function, which is the modesetting's original
location, still contains DPMS state handling. It's exactly the inverse
of the atomic-disable function.

v3:
* protect modesetting from from fb == NULL
v2:
* do an atomic check for plane
* reject invisible primary planes

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Fixes: b48e1b6ffd28 ("drm/ast: Add CRTC helpers for atomic modesetting")
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: "Y.C. Chen" <yc_chen@aspeedtech.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202111557.15176-2-tzimmermann@suse.de

drm/ast: Enable atomic modesetting

This commit sets the remaining atomic-modesetting helpers and the flag
DRIVER_ATOMIC. Legacy cursor functions are removed in favor of the cursor
plane. For power management, atomic helpers replace the indvidual
operations that the driver currently runs.

Atomic modesetting is enabled with this commit.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107083404.6852-10-tzimmermann@suse.de

drm/ast: Add cursor plane

The cursor plane uses an internal format of ARGB4444. To userspace, we
announce ARGB8888 and do the transformation internally.

v2:
* don't set plane call-back functions to NULL explicitly
* define plane format array in global scope

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107083404.6852-9-tzimmermann@suse.de

drm/ast: Add CRTC helpers for atomic modesetting

As the CRTC code has already been prepared for a split between mode
setting and plane handling, most of the CRTC's atomic modesetting is
build upon primitives of the non-atomic implementation.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107083404.6852-8-tzimmermann@suse.de

drm/ast: Add primary plane

Like the original mode-setting code, the primary plane supports XRGB888,
RGB565 and C8. The plane itself only pins BOs and sets the base address
and scanline offset. The mode-setting code will be located in the CRTC's
atomic helpers.

v2:
* don't set plane call-back functions to NULL explicitly
* define plane format array in global scope

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107083404.6852-7-tzimmermann@suse.de

drm/ast: Split ast_set_vbios_mode_info()

The implementation of ast_set_vbios_mode() converts a DRM display mode
and framebuffer into an adjusted mode and stores information for the
video BIOS to several scratch regsiters.

Here we split the function into individual functions that do the
conversion, set the VBIOS mode information and format information.
This makes it compatible with support for primary planes and atomic
modesetting.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107083404.6852-6-tzimmermann@suse.de

drm/ast: Split ast_set_ext_reg() into color and threshold function

In ast_set_ext_reg() sets several framebuffer options and CRT threshold
parameters. The former is mostly state of the primary plane; the latter
is constant. Hence, split the function in two and make it work with
atomic modesetting.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107083404.6852-5-tzimmermann@suse.de

drm/ast: Don't clear base address and offset with default values

The content of the base-address and offset registers are state of
the primary plane. Clearing it to default values will interfere with
plane functions for atomic mode setting.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107083404.6852-4-tzimmermann@suse.de

drm/ast: Allocate cursor BOs at high end of video memory

By putting cursor BOs at the high end of the video memory, we can avoid
memory fragmentation. Starting at the low end, contiguous video memory is
available for framebuffers.

The patch also simplifies the buffer swapping by splitting
struct ast_private.cursor_cache BO into two separate boffer objects. Cursor
images alternate between these buffers instead of offsets within cursor_cache.

v3:
* fixes space-before-tab error near AST_HWC_SIGNATURE_CHECKSUM

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190927090309.10254-6-tzimmermann@suse.de

drm/ast: Move cursor offset swapping into ast_show_cursor()

Selecting the correct offset for the new cursor image is not relevant
outside of ast_show_cursor(). Let the function do the work.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190927090309.10254-5-tzimmermann@suse.de

drm/ast: Move cursor update code to ast_show_cursor()

A call to ast's show-cursor function now receives the cursor image
and updates the buffer. The change splits off image update and
base-address update into separate functions.

v3:
* move ast_{show,hide}_cursor() in a previous patch

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190927090309.10254-4-tzimmermann@suse.de

drm/ast: Move ast_{show,hide}_cursor() within source file

This patch only moves around code for easier review of later patches. No
functional cahnges are made.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190927090309.10254-3-tzimmermann@suse.de

drm/ast: Don't call ast_show_cursor() from ast_cursor_move()

Separating the cursor's move() function from the show() function in
preparation of further rework of the cursor update code.

'Showing' the cursor from within the move() function is required to
update the cursor position.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190927090309.10254-2-tzimmermann@suse.de

drm/ast: Use drm_gem_vram_{vmap,vunmap}() to map cursor source BO

The VRAM helper's vmap interfaces provide pinning and mapping of BO
memory. This patch replaces the respective code in ast cursor handling.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190911120352.20084-3-tzimmermann@suse.de

drm/connector: Share with non-atomic drivers the function to get the single encoder

This 3 non-atomic drivers all have the same function getting the
only encoder available in the connector, also atomic drivers have
this fallback. So moving it a common place and sharing between atomic
and non-atomic drivers.

While at it I also removed the mention of
drm_atomic_helper_best_encoder() that was renamed in
commit 297e30b5d9b6 ("drm/atomic-helper: Unexport
drm_atomic_helper_best_encoder").

v3: moving drm_connector_get_single_encoder to drm_kms_helper module

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: dri-devel@lists.freedesktop.org
Cc: intel-gfx@lists.freedesktop.org
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190913232857.389834-1-jose.souza@intel.com

drm/ast: Fixed reboot test may cause system hanged

There is another thread still access standard VGA I/O while loading drm driver.
Disable standard VGA I/O decode to avoid this issue.

Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
Reviewed-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1523410059-18415-1-git-send-email-yc_chen@aspeedtech.com

drm/ast: Provide ddc symlink in connector sysfs directory

Use the ddc pointer provided by the generic connector.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ff968add8074d109aeed02f0708edd85138246c3.1564161140.git.andrzej.p@collabora.com

drm/ast: drop use of drmP.h

Drop use of the deprecated drmP.h header file.
While touching the files divide include files in blocks
and sort the include files in the individual blocks.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Emil Velikov <emil.velikov@collabora.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Sam Bobroff <sbobroff@linux.ibm.com>
Cc: YueHaibing <yuehaibing@huawei.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: "Y.C. Chen" <yc_chen@aspeedtech.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190630061922.7254-33-sam@ravnborg.org

drm/ast: Replace struct ast_fbdev with generic framebuffer emulation

This patch replaces ast's framebuffer console with DRM's generic
implememtation. All respective code is being removed from the driver.

The console is set up with a shadow buffer. The actual buffer object is
not permanently pinned in video ram, but just another buffer object that
the driver moves in and out of vram as necessary. The driver's function
ast_crtc_do_set_base() used to contain special handling for the framebuffer
console. With the new generic framebuffer, the driver does not need this
code an longer.

v2:
* use drm_fb_helper_set_suspend_unlocked() in ast_drm_{thaw,freeze}()
* dirty function no longer required

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/315835/

drm/ast: Replace struct ast_framebuffer with GEM framebuffer helpers

The ast driver's struct ast_framebuffer is a buffer object with GEM
interface. There are already GEM framebuffer helpers that implement
the same functionality. Convert ast to these.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190627173410.8300-1-tzimmermann@suse.de

drm/ast: Pin and map cursor source BO during update

The ast driver used to lock the cursor source BO during updates. Locking
should be done internally by the BO's implementation, so we pin it instead
to system memory. The mapping information is also stored in the BO. No
need to have an extra argument to the kmap function.

v2:
* pin cursor BOs to current location

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190613073041.29350-5-tzimmermann@suse.de

drm/ast: Remove obsolete or unused cursor state

The ast driver's data structures store unused or uncecessary cursor
state. Most of the cursor state is already stored elsewhere and can
be retrieved when necessary. Remove the obsolete fields and adapt
users accordingly.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190613073041.29350-4-tzimmermann@suse.de

drm/ast: Unpin cursor BO during cleanup

The unpin operation was missing from ast_cursor_fini(). Fixed now.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190613073041.29350-3-tzimmermann@suse.de

drm: Rename reserve/unreserve to lock/unlock in GEM VRAM helpers

To align with the rest of DRM terminology, the GEM VRAM helpers now use
lock and unlock in places where reserve and unreserve where used before.
All callers have been adapted.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20190521110831.20200-3-tzimmermann@suse.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

drm: Replace drm_gem_vram_push_to_system() with kunmap + unpin

The push-to-system function forces a buffer out of video RAM. This decision
should rather be made by the memory manager. By replacing the function with
calls to the kunmap and unpin functions, the buffer's memory becomes available,
but the buffer remains in VRAM until it's evicted by a pin operation.

This patch replaces the remaining instances of drm_gem_vram_push_to_system()
in ast and mgag200, and removes the function from DRM.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20190521110831.20200-2-tzimmermann@suse.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

drm: Reserve/unreserve GEM VRAM BOs from within pin/unpin functions

The original bochs and vbox implementations of pin and unpin functions
automatically reserved BOs during validation. This functionality got lost
while converting the code to a generic implementation. This may result
in validating unlocked TTM BOs.

Adding the reserve and unreserve operations to GEM VRAM's pin and unpin
functions fixes the bochs and vbox drivers. Additionally the patch changes
the mgag200, ast and hibmc drivers to not reserve BOs by themselves.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reported-by: kernel test robot <lkp@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20190516162746.11636-3-tzimmermann@suse.de
Fixes: a3232987fdbf ("drm/bochs: Convert bochs driver to |struct drm_gem_vram_object|")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

drm/ast: Replace mapping code with drm_gem_vram_{kmap/kunmap}()

The AST driver establishes several memory mappings for frame buffers
and cursors. This patch converts the driver to use the equivalent
drm_gem_vram_kmap() functions. It removes the dependencies on TTM
and cleans up the code.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: http://patchwork.freedesktop.org/patch/msgid/20190508082630.15116-12-tzimmermann@suse.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

drm/ast: Convert AST driver to |struct drm_gem_vram_object|

The data structure |struct drm_gem_vram_object| and its helpers replace
|struct ast_bo|. It's the same implementation; except for the type names.

v4:
* cleanups from checkpatch.pl

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: http://patchwork.freedesktop.org/patch/msgid/20190508082630.15116-10-tzimmermann@suse.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

drm: Split out drm_probe_helper.h

Having the probe helper stuff (which pretty much everyone needs) in
the drm_crtc_helper.h file (which atomic drivers should never need) is
confusing. Split them out.

To make sure I actually achieved the goal here I went through all
drivers. And indeed, all atomic drivers are now free of
drm_crtc_helper.h includes.

v2: Make it compile. There was so much compile fail on arm drivers
that I figured I'll better not include any of the acks on v1.

v3: Massive rebase because i915 has lost a lot of drmP.h includes, but
not all: Through drm_crtc_helper.h > drm_modeset_helper.h -> drmP.h
there was still one, which this patch largely removes. Which means
rolling out lots more includes all over.

This will also conflict with ongoing drmP.h cleanup by others I
expect.

v3: Rebase on top of atomic bochs.

v4: Review from Laurent for bridge/rcar/omap/shmob/core bits:
- (re)move some of the added includes, use the better include files in
other places (all suggested from Laurent adopted unchanged).
- sort alphabetically

v5: Actually try to sort them, and while at it, sort all the ones I
touch.

v6: Rebase onto i915 changes.

v7: Rebase once more.

Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Acked-by: CK Hu <ck.hu@mediatek.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: virtualization@lists.linux-foundation.org
Cc: etnaviv@lists.freedesktop.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: intel-gfx@lists.freedesktop.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-msm@vger.kernel.org
Cc: freedreno@lists.freedesktop.org
Cc: nouveau@lists.freedesktop.org
Cc: spice-devel@lists.freedesktop.org
Cc: amd-gfx@lists.freedesktop.org
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-tegra@vger.kernel.org
Cc: xen-devel@lists.xen.org
Link: https://patchwork.freedesktop.org/patch/msgid/20190117210334.13234-1-daniel.vetter@ffwll.ch

drm/ast: fixed reading monitor EDID not stable issue

v1: over-sample data to increase the stability with some specific monitors
v2: refine to avoid infinite loop
v3: remove un-necessary "volatile" declaration

[airlied: fix two checkpatch warnings]

Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1542858988-1127-1-git-send-email-yc_chen@aspeedtech.com

drm/ast: fixed cursor may disappear sometimes

Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm/ast: change resolution may cause screen blurred

The value of pitches is not correct while calling mode_set.
The issue we found so far on following system:
- Debian8 with XFCE Desktop
- Ubuntu with KDE Desktop
- SUSE15 with KDE Desktop

Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
Cc: <stable@vger.kernel.org>
Tested-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm: drop _mode_ from drm_mode_connector_attach_encoder

Again to align with the usual prefix of just drm_connector_. Again
done with sed + manual fixup for indent issues.

Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180709084016.23750-7-daniel.vetter@ffwll.ch

drm: drop _mode_ from update_edit_property()

Just makes it longer, and for most things in drm_connector.[hc] we
just use the drm_connector_ prefix. Done with sed + a bit of manual
fixup for the indenting.

Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180709084016.23750-6-daniel.vetter@ffwll.ch

drm/ast: fix mode_valid's return type

The method struct drm_connector_helper_funcs::mode_valid is defined
as returning an 'enum drm_mode_status' but the driver implementation
for this method uses an 'int' for it.

Fix this by using 'enum drm_mode_status' in the driver too.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180424131443.1810-1-luc.vanoostenryck@gmail.com

drm/ast: Load lut in crtc_commit

In the past the ast driver relied upon the fbdev emulation helpers to
call ->load_lut at boot-up. But since

commit b8e2b0199cc377617dc238f5106352c06dcd3fa2
Author: Peter Rosin <peda@axentia.se>
Date: Tue Jul 4 12:36:57 2017 +0200

drm/fb-helper: factor out pseudo-palette

that's cleaned up and drivers are expected to boot into a consistent
lut state. This patch fixes that.

Fixes: b8e2b0199cc3 ("drm/fb-helper: factor out pseudo-palette")
Cc: Peter Rosin <peda@axenita.se>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: <stable@vger.kernel.org> # v4.14+
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=198123
Cc: Bill Fraser <bill.fraser@gmail.com>
Reported-and-Tested-by: Bill Fraser <bill.fraser@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm: Pass struct drm_file * to __drm_mode_object_find [v2]

This will allow __drm_mode_object_file to be extended to perform
access control checks based on the file in use.

v2: Also fix up vboxvideo driver in staging

[airlied: merging early as this is an API change]

Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm/ast: switch to drm_*_get(), drm_*_put() helpers

Use drm_*_get() and drm_*_put() helpers instead of drm_*_reference()
and drm_*_unreference() helpers.

drm_*_reference() and drm_*_unreference() functions are just
compatibility alias for drm_*_get() and drm_*_put() and should not be
used by new code. So convert all users of compatibility functions to
use the new APIs.

Generated by: scripts/coccinelle/api/drm-get-put.cocci

Signed-off-by: Cihangir Akturk <cakturk@gmail.com>
Acked-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1502454794-28558-5-git-send-email-cakturk@gmail.com

drm: ast: remove dead code and pointless local lut storage

The redundant fb helpers .load_lut, .gamma_set and .gamma_get are
no longer used. Remove the dead code and hook up the crtc .gamma_set
to use the crtc gamma_store directly instead of duplicating that
info locally.

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20170713162538.22788-7-peda@axentia.se

drm/ast: Add an crtc_disable callback to the crtc helper funcs

Implement the proper CRTC disablement, just like done in mgag200
driver.

Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm: Add acquire ctx to ->gamma_set hook

Atomic helpers really want this instead of the hacked-up legacy
backoff trick, which unfortunately prevents drivers from using their
own private drm_modeset_locks.

Aside: There's a few atomic drivers (nv50, vc4, soon vmwgfx) which
don't yet use the new atomic color mgmt/gamma table stuff. Would be
nice if they could switch over and just hook up
drm_atomic_helper_legacy_gamma_set() instead.

Cc: Dave Airlie <airlied@redhat.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Sinclair Yeh <syeh@vmware.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Cc: Eric Anholt <eric@anholt.net>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170403083304.9083-13-daniel.vetter@ffwll.ch

drm/ast: Base support for AST2500

Add detection and mode setting updates for AST2500 generation chip,
code originally from Aspeed and slightly reworked for coding style
mostly by Ben. This doesn't contain the BMC DRAM POST code which
is in a separate patch.

Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm/ast: const'ify mode setting tables

And fix some comment alignment & space/tabs while at it

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm: Nuke fb->bits_per_pixel

Replace uses of fb->bits_per_pixel with fb->format->cpp[0]*8.
Less duplicated information is a good thing.

Note that I didn't put parens around the cpp*8 in the below cocci script,
on account of not wanting spurious parens all over the place. Instead I
did the unsafe way, and tried to look over the entire diff to spot if
any dangerous expressions were produced. I didn't see any.

There are some cases where previously the code did X*bpp/8, so the
division happened after the multiplication. Those are now just X*cpp
so the division effectively happens before the multiplication,
but that is perfectly fine since bpp is always a multiple of 8.

@@
struct drm_framebuffer *FB;
expression E;
@@
drm_helper_mode_fill_fb_struct(...) {
...
- FB->bits_per_pixel = E;
...
}

@@
struct drm_framebuffer *FB;
expression E;
@@
i9xx_get_initial_plane_config(...) {
...
- FB->bits_per_pixel = E;
...
}

@@
struct drm_framebuffer *FB;
expression E;
@@
ironlake_get_initial_plane_config(...) {
...
- FB->bits_per_pixel = E;
...
}

@@
struct drm_framebuffer *FB;
expression E;
@@
skylake_get_initial_plane_config(...) {
...
- FB->bits_per_pixel = E;
...
}

@@
struct drm_framebuffer FB;
expression E;
@@
(
- E * FB.bits_per_pixel / 8
+ E * FB.format->cpp[0]
|
- FB.bits_per_pixel / 8
+ FB.format->cpp[0]
|
- E * FB.bits_per_pixel >> 3
+ E * FB.format->cpp[0]
|
- FB.bits_per_pixel >> 3
+ FB.format->cpp[0]
|
- (FB.bits_per_pixel + 7) / 8
+ FB.format->cpp[0]
|
- FB.bits_per_pixel
+ FB.format->cpp[0] * 8
|
- FB.format->cpp[0] * 8 != 8
+ FB.format->cpp[0] != 1
)

@@
struct drm_framebuffer *FB;
expression E;
@@
(
- E * FB->bits_per_pixel / 8
+ E * FB->format->cpp[0]
|
- FB->bits_per_pixel / 8
+ FB->format->cpp[0]
|
- E * FB->bits_per_pixel >> 3
+ E * FB->format->cpp[0]
|
- FB->bits_per_pixel >> 3
+ FB->format->cpp[0]
|
- (FB->bits_per_pixel + 7) / 8
+ FB->format->cpp[0]
|
- FB->bits_per_pixel
+ FB->format->cpp[0] * 8
|
- FB->format->cpp[0] * 8 != 8
+ FB->format->cpp[0] != 1
)

@@
struct drm_plane_state *state;
expression E;
@@
(
- E * state->fb->bits_per_pixel / 8
+ E * state->fb->format->cpp[0]
|
- state->fb->bits_per_pixel / 8
+ state->fb->format->cpp[0]
|
- E * state->fb->bits_per_pixel >> 3
+ E * state->fb->format->cpp[0]
|
- state->fb->bits_per_pixel >> 3
+ state->fb->format->cpp[0]
|
- (state->fb->bits_per_pixel + 7) / 8
+ state->fb->format->cpp[0]
|
- state->fb->bits_per_pixel
+ state->fb->format->cpp[0] * 8
|
- state->fb->format->cpp[0] * 8 != 8
+ state->fb->format->cpp[0] != 1
)

@@
@@
- (8 * 8)
+ 8 * 8

@@
struct drm_framebuffer FB;
@@
- (FB.format->cpp[0])
+ FB.format->cpp[0]

@@
struct drm_framebuffer *FB;
@@
- (FB->format->cpp[0])
+ FB->format->cpp[0]

@@
@@
struct drm_framebuffer {
...
- int bits_per_pixel;
...
};

v2: Clean up the 'cpp*8 != 8' and '(8 * 8)' cases (Laurent)
v3: Adjusted the semantic patch a bit and regenerated due to code
changes

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com> (v1)
Link: http://patchwork.freedesktop.org/patch/msgid/1481751140-18352-1-git-send-email-ville.syrjala@linux.intel.com

drm/ast: Add local 'fb' variables

Add a local 'fb' variable to a few places to get rid of the
'crtc->primary->fb' stuff. Looks neater and helps me with my poor
coccinelle skills later.

Cc: Dave Airlie <airlied@redhat.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1479498793-31021-6-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drm: Make the connector .detect() callback optional

Many drivers (21 to be exact) create connectors that are always
connected (for instance to an LVDS or DSI panel). Instead of forcing
them to implement a dummy .detect() handler, make the callback optional
and consider the connector as always connected in that case.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Jyri Sarha <jsarha@ti.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Vincent Abriou <vincent.abriou@st.com>
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
[seanpaul fixed small conflict in rcar-du/rcar_du_lvdscon.c]
Signed-off-by: Sean Paul <seanpaul@chromium.org>

drm/core: Change declaration for gamma_set.

Change return value to int to propagate errors from gamma_set,
and remove start parameter. Updates always use the full size,
and some drivers even ignore the start parameter altogether.

This is needed for atomic drivers, where an atomic commit can
fail with -EINTR or -ENOMEM and should be restarted. This is already
and issue for drm_atomic_helper_legacy_set_gamma, which this patch
fixes up.

Changes since v1:
- Fix compiler warning. (Emil)
- Fix commit message (Daniel)

Cc: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: VMware Graphics <linux-graphics-maintainer@vmware.com>
Cc: Mathieu Larouche <mathieu.larouche@matrox.com>
Cc: Thierry Reding <treding@nvidia.com>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
[danvet: Improve commit message a bit more, mention that this fixes
the helper.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/742944bc-9f41-1acb-df4f-0fd4c8a10168@linux.intel.com

drm: Remove unused drm_device from drm_gem_object_lookup()

drm_gem_object_lookup() has never required the drm_device for its file
local translation of the user handle to the GEM object. Let's remove the
unused parameter and save some space.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: dri-devel@lists.freedesktop.org
Cc: Dave Airlie <airlied@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
[danvet: Fixup kerneldoc too.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drm/ast: removed optional dummy crtc mode_fixup function.

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)

Signed-off-by: Carlos Palminha <palminha@synopsys.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/0f8f948babd93fce8523253b0f525446e2f565db.1455630967.git.palminha@synopsys.com

drm/ast: removed optional dummy encoder mode_fixup function.

mode_fixup function for encoder drivers became optional with patch
http://patchwork.freedesktop.org/patch/msgid/1455106522-32307-1-git-send-email-palminha@synopsys.com

This patch set nukes all the dummy mode_fixup implementations.

(made on top of Daniel topic/drm-misc branch)

Signed-off-by: Carlos Palminha <palminha@synopsys.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/12e1e900724c890166b88b0f4d67baba387482af.1455540137.git.palminha@synopsys.com

drm: Pass 'name' to drm_encoder_init()

Done with coccinelle for the most part. However, it thinks '...' is
part of the semantic patch, so I put an 'int DOTDOTDOT' placeholder
in its place and got rid of it with sed afterwards.

@@
identifier dev, encoder, funcs;
@@
int drm_encoder_init(struct drm_device *dev,
struct drm_encoder *encoder,
const struct drm_encoder_funcs *funcs,
int encoder_type
+ ,const char *name, int DOTDOTDOT
)
{ ... }

@@
identifier dev, encoder, funcs;
@@
int drm_encoder_init(struct drm_device *dev,
struct drm_encoder *encoder,
const struct drm_encoder_funcs *funcs,
int encoder_type
+ ,const char *name, int DOTDOTDOT
);

@@
expression E1, E2, E3, E4;
@@
drm_encoder_init(E1, E2, E3, E4
+ ,NULL
)

v2: Add ', or NULL...' to @name kernel doc (Jani)
Annotate the function with __printf() attribute (Jani)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449670818-2966-1-git-send-email-ville.syrjala@linux.intel.com

drm/ast: Initialized data needed to map fbdev memory

Due to a missing initialization there was no way to map fbdev memory.
Thus for example using the Xserver with the fbdev driver failed.
This fix adds initialization for fix.smem_start and fix.smem_len
in the fb_info structure, which fixes this problem.

Requested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: stable@vger.kernel.org
Signed-off-by: Egbert Eich <eich@suse.de>
[pulled from SuSE tree by me - airlied]
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm: Move drm_crtc_init from drm_crtc.h to drm_plane_helper.h

Just a bit of OCD cleanup on headers - this function isn't the core
interface any more but just a helper for drivers who haven't yet
transitioned to universal planes. Put the declaration at the right
spot and sprinkle necessary #includes over all drivers.

Maybe this helps to encourage driver maintainers to do the switch.

v2: Fix #include ordering for tegra, reported by 0-day builder.

v3: Include required headers, reported by Thierry.

Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Thierry Reding <treding@nvidia.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

drm/ast: Fix HW cursor image

The translation from the X driver to the KMS one typo'ed a couple
of array indices, causing the HW cursor to look weird (blocky with
leaking edge colors). This fixes it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm/ast: Add reduced blanking modes for wide screen mode

Signed-off-by: Egbert Eich <eich@suse.com>
Tested-by: Steven You2 Liang <liangyou2@lenovo.com>
Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>

v3: based on [PATCH 1/2] drm/ast: Add missing entry to dclk_table[].
Add reduced blanking modes, improve mode matching to
identify these modes by thier sync polarities.

[airlied: argh whitespace damage]
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm/ast: use helpers

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm: add register and unregister functions for connectors

Introduce generic functions to register and unregister connectors. This
provides a common place to add and remove associated user space
interfaces.

Signed-off-by: Thomas Wood <thomas.wood@intel.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drm/ast: initial DP501 support (v0.2)

This is the initial attempt at porting the DP501 code from the userspace
driver,

the firmware file is in
http://people.freedesktop.org/~airlied/ast_dp501_fw.bin

this should really be exposed as another encoder/connector that is cloneable

v0.2:
init 3rd tx properly,
add scratch reduction of VRAM size
backup firmware properly.

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

drm/ast: add AST 2400 support.

This is ported from the userspace driver.

Untested on any ast2400 hw so far.

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

drm/ast: add widescreen + rb modes from X.org driver (v2)

This syncs up the mode code from the X.org driver upstream,
and adds the mode validation step for hw that doesn't have
widescreen.

v2: (from Egbert Eich <eich@suse.de)
squash drm/ast: Use correct structure member for mode validation
to avoid bisect regression.

In struct drm_display_mode crtc_hdisplay and crtc_vdisplay are holding
the crtc parameters after mode fixup. For validation we need hdisplay and
vdisplay.

Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm: make mode_valid callback optional

Many drm connectors do not need mode validation.
The patch makes this callback optional and removes dumb implementations.

v2: Rebase:
- imx move to a shared (but still dummy) ->mode_valid implementation.
- probe helpers have been extracted to drm_probe_helper.c

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drm: Replace crtc fb with primary plane fb (v3)

Now that CRTC's have a primary plane, there's no need to track the
framebuffer in the CRTC. Replace all references to the CRTC fb with the
primary plane's fb.

This patch was generated by the Coccinelle semantic patching tool using
the following rules:

@@ struct drm_crtc C; @@
- (C).fb
+ C.primary->fb

@@ struct drm_crtc *C; @@
- (C)->fb
+ C->primary->fb

v3: Generate patch via coccinelle. Actual removal of crtc->fb has been
moved to a subsequent patch.

v2: Fixup several lingering crtc->fb instances that were missed in the
first patch iteration. [Rob Clark]

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>

drivers: gpu: Mark functions as static in ast_mode.c

Mark functions ast_set_sync_reg(), ast_set_dac_reg(),
ast_set_start_address_crt1(), ast_crtc_init(), ast_encoder_init(),
ast_connector_init(), ast_cursor_init(), ast_cursor_fini(),
ast_show_cursor() and ast_hide_cursor() as static in drm/ast/ast_mode.c
because they are not used outside this file.

This eliminates the following warning in drm/ast/ast_mode.c:
drivers/gpu/drm/ast/ast_mode.c:407:6: warning: no previous prototype for
‘ast_set_sync_reg’ [-Wmissing-prototypes]
drivers/gpu/drm/ast/ast_mode.c:418:6: warning: no previous prototype for
‘ast_set_dac_reg’ [-Wmissing-prototypes]
drivers/gpu/drm/ast/ast_mode.c:430:6: warning: no previous prototype for
‘ast_set_start_address_crt1’ [-Wmissing-prototypes]
drivers/gpu/drm/ast/ast_mode.c:626:5: warning: no previous prototype for
‘ast_crtc_init’ [-Wmissing-prototypes]
drivers/gpu/drm/ast/ast_mode.c:713:5: warning: no previous prototype for
‘ast_encoder_init’ [-Wmissing-prototypes]
drivers/gpu/drm/ast/ast_mode.c:780:5: warning: no previous prototype for
‘ast_connector_init’ [-Wmissing-prototypes]
drivers/gpu/drm/ast/ast_mode.c:813:5: warning: no previous prototype for
‘ast_cursor_init’ [-Wmissing-prototypes]
drivers/gpu/drm/ast/ast_mode.c:850:6: warning: no previous prototype for
‘ast_cursor_fini’ [-Wmissing-prototypes]
drivers/gpu/drm/ast/ast_mode.c:968:6: warning: no previous prototype for
‘ast_show_cursor’ [-Wmissing-prototypes]
drivers/gpu/drm/ast/ast_mode.c:979:6: warning: no previous prototype for
‘ast_hide_cursor’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm/ast: drop duplicate initialization

We set ".disable" to "ast_crtc_disable" twice.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

UAPI: (Scripted) Convert #include "..." to #include <path/...> in drivers/gpu/

Convert #include "..." to #include <path/...> in drivers/gpu/.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>

drm/ast: drop debug level on error printk

This was never an error, drop to a debug print.

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

drm/ast: fix EDID memory leak

The EDID returned by drm_get_edid() was never freed.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm: Make the .mode_fixup() operations mode argument a const pointer

The passed mode must not be modified by the operation, make it const.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm: Initial KMS driver for AST (ASpeed Technologies) 2000 series (v2)

This is the initial driver for the Aspeed Technologies chips found in
servers. This driver supports the AST 2000, 2100, 2200, 2150 and 2300. It
doesn't support the AST11xx due to lack of hw to test it on, and them requiring
different codepaths.

This driver is intended to be used with xf86-video-modesetting in userspace.

This driver has a slightly different design than other KMS drivers, but
future server chips will probably share similiar setup. As these GPUs commonly
have low video RAM, it doesn't make sense to put the kms console in VRAM
always. This driver places the kms console into system RAM, and does dirty
updates to a copy in video RAM. When userspace sets a new scanout buffer,
it forcefully evicts the video RAM console, and X can create a framebuffer
that can use all of of video RAM.

This driver uses TTM but in a very simple fashion to control the eviction
to system RAM of the console, and multiple servers.

v2: add s/r support, fix Kconfig.

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