drm/udl: Untangle .get_modes() and .detect_ctx()

Provide separate implementations of .get_modes() and .detect_ctx()
from struct drm_connector. Switch to struct drm_edid.

Udl's .detect() helper used

drm/udl: Untangle .get_modes() and .detect_ctx()

Provide separate implementations of .get_modes() and .detect_ctx()
from struct drm_connector. Switch to struct drm_edid.

Udl's .detect() helper used to fetch the EDID from the adapter and the
.get_modes() helper provided display modes from the data. But this
relied on the DRM helpers to call the functions in the correct order.
When no EDID could be retrieved, .detect() regularly printed a warning
to the kernel log.

Switching to the new helpers around struct drm_edid separates both from
each other. The .get_modes() helper now fetches the EDID by itself and
the .detect_ctx() helper only tests for its presence. The patch does a
number of things to implement this.

- Move udl_get_edid_block() to udl_edid.c and rename it to
udl_read_edid_block(). Then use the helper to implement probing in
udl_probe_edid() and reading in udl_edid_read(). The latter helper
is build on top of DRM helpers.

- Replace the existing code in .get_modes() and .detect() with udl's
new EDID helpers. The new code behaves like DRM's similar DDC-based
helpers. Instead of .detect(), udl now implements .detect_ctx().

- Remove the edid data from struct udl_connector. The field cached
the EDID data between calls to .detect() and .get_modes(), but is now
unused.

v3:
- implement udl_probe_edid() with memchr_inv() (Jani)

v2:
- implement udl_probe_edid() within udl
- reword commit description

Signed-off-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Jani Nikula <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

show more ...

drm/udl: Clean up Makefile

Clean up Makefile before listing new object files. No functional
changes.

Signed-off-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Jani Nikula <jani.nikula@int

drm/udl: Clean up Makefile

Clean up Makefile before listing new object files. No functional
changes.

Signed-off-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Jani Nikula <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

show more ...

drm/udl: Move connector to modesetting code

Move the connector next to the rest of the modesetting code. No
functional changes.

Signed-off-by: Thomas Zimmermann <[email protected]>
Reviewed-by: J

drm/udl: Move connector to modesetting code

Move the connector next to the rest of the modesetting code. No
functional changes.

Signed-off-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Javier Martinez Canillas <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

show more ...

drm/udl: Use GEM vmap/mmap function from SHMEM helpers

The udl driver contains an implementation of GEM vmap and mmap
operations that is identical to the common SHMEM helper; except
that udl's code

drm/udl: Use GEM vmap/mmap function from SHMEM helpers

The udl driver contains an implementation of GEM vmap and mmap
operations that is identical to the common SHMEM helper; except
that udl's code uses cached pages by default.

Convert udl to regular SHMEM helper functions. There's no reason
to have udl behave differently from all other SHMEM drivers. The
udl driver uses the SHMEM helper to enable caching.

v3:
* rebased onto Daniel's shmem untangle series
v2:
* implement .gem_create_object with SHMEM helper

Signed-off-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

show more ...

drm/udl: Remove udl_fb.c

The remaining code in udl_fb.c is unused. Remove the file entirely.

Signed-off-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Emil Velikov <[email protected]

drm/udl: Remove udl_fb.c

The remaining code in udl_fb.c is unused. Remove the file entirely.

Signed-off-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

show more ...

drm/udl: Convert to struct drm_simple_display_pipe

Udl has a single display pipeline with a primary plane; perfect for
simple-pipe helpers. Convert it over. The old encoder and CRTC code
becomes unu

drm/udl: Convert to struct drm_simple_display_pipe

Udl has a single display pipeline with a primary plane; perfect for
simple-pipe helpers. Convert it over. The old encoder and CRTC code
becomes unused and obsolete.

Exported formats for the primary plane are RGB565 and XRGB8888, with
the latter being emulated. The 16-bit format is the default and what
is used when communicating with the device.

This patch enables atomic modesetting for udl devices.

v3:
* remove unused field crtc from struct udl_device
* set crtc_state->no_vblank at beginning of enable()
v2:
* move suspend/resume changes into separate patch
* remove non-atomic code

Signed-off-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

show more ...

drm/udl: Remove struct udl_gem_object and functions

Simply removes all the obsolete GEM code from udl. No functional
changes.

Signed-off-by: Thomas Zimmermann <[email protected]>
Acked-by: Gerd H

drm/udl: Remove struct udl_gem_object and functions

Simply removes all the obsolete GEM code from udl. No functional
changes.

Signed-off-by: Thomas Zimmermann <[email protected]>
Acked-by: Gerd Hoffmann <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

show more ...

treewide: Add SPDX license identifier - Makefile/Kconfig

Add SPDX license identifiers to all Make/Kconfig files which:

- Have no license information of any form

These files fall under the project

treewide: Add SPDX license identifier - Makefile/Kconfig

Add SPDX license identifiers to all Make/Kconfig files which:

- Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

GPL-2.0-only

Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...

drm/udl: remove unneeded -Iinclude/drm compiler flag

With the include directives under include/drm/ fixed, this flag is
no longer needed.

Signed-off-by: Masahiro Yamada <[email protected]

drm/udl: remove unneeded -Iinclude/drm compiler flag

With the include directives under include/drm/ fixed, this flag is
no longer needed.

Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]

show more ...

drm/udl: add support to export a handle to a FD on UDL.

Only importing an FD to a handle is currently supported on UDL,
but the exporting functionality is equally useful.

Signed-off-by: Haixia Shi

drm/udl: add support to export a handle to a FD on UDL.

Only importing an FD to a handle is currently supported on UDL,
but the exporting functionality is equally useful.

Signed-off-by: Haixia Shi <[email protected]>
Reviewed-by: Stéphane Marchesin <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

show more ...

drm/udl: initial UDL driver (v4)

This is an initial drm/kms driver for the displaylink devices.

Supports fb_defio,
supports KMS dumb interface
supports 24bpp via conversion to 16bpp, hw can do this

drm/udl: initial UDL driver (v4)

This is an initial drm/kms driver for the displaylink devices.

Supports fb_defio,
supports KMS dumb interface
supports 24bpp via conversion to 16bpp, hw can do this better.
supports hot unplug using new drm core features.

On an unplug, it disables connector polling, unplugs connectors
from sysfs, unplugs fbdev layer (using Kay's API), drops all the
USB device URBs, and call the drm core to unplug the device.

This driver is based in large parts on udlfb.c so I've licensed
it under GPLv2.

Signed-off-by: Dave Airlie <[email protected]>

show more ...