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Author SHA1 Message Date
Sebastian Reichel
9be5bab37d drm/omap: remove legacy DSS device operations 
All DSS devices have been converted to bridge API, so
the device operations are always NULL. This removes
the device ops function pointers and all code using it.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-42-tomi.valkeinen@ti.com
 2020-12-15 16:08:25 +02:00
Sebastian Reichel
af1110cb6f drm/omap: dsi: Register a drm_bridge 
In order to integrate with a chain of drm_bridge, the internal DSI
output has to expose its operations through the drm_bridge API.
Register a bridge at initialisation time to do so and remove the
omap_dss_device operations that are now unused.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-41-tomi.valkeinen@ti.com
 2020-12-15 16:08:25 +02:00
Sebastian Reichel
cf64148abc drm/panel: Move OMAP's DSI command mode panel driver 
The panel driver is no longer using any OMAP specific APIs, so
let's move it into the generic panel directory.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-40-tomi.valkeinen@ti.com
 2020-12-15 16:08:25 +02:00
Sebastian Reichel
8510148732 drm/omap: remove global dss_device variable 
We can simply provide the device to the omapdrm driver
via pdata. omapdss_is_initialized() is no longer required
(even before this patch), since omapdrm device is only
registered after the pointer is initialized.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-39-tomi.valkeinen@ti.com
 2020-12-15 16:08:25 +02:00
Sebastian Reichel
5966140422 drm/omap: panel-dsi-cm: fix remove() 
Do not try to reset the panel after DSI has been
detached, since the DSI clocks may have been disabled
at this point. The panel will be disabled and unprepared
before being removed and a reset will be done when being
probed again.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-38-tomi.valkeinen@ti.com
 2020-12-15 16:08:25 +02:00
Sebastian Reichel
1ecf643f63 drm/omap: panel-dsi-cm: support unbinding 
Now, that the driver implements the common DRM panel API
the unbind no longer needs to be suppressed.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-37-tomi.valkeinen@ti.com
 2020-12-15 16:08:25 +02:00
Sebastian Reichel
1f4e871687 drm/omap: panel-dsi-cm: use DEVICE_ATTR_RO 
Use DEVICE_ATTR_RO helper instead of plain DEVICE_ATTR,
which makes the code a bit shorter and easier to read.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-36-tomi.valkeinen@ti.com
 2020-12-15 16:08:24 +02:00
Sebastian Reichel
607824315e drm/omap: dsi: implement check timings 
Implement check timings, which will check if it's possible to
configure the clocks for the provided mode using the same code
as the set_config() hook.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-35-tomi.valkeinen@ti.com
 2020-12-15 16:08:24 +02:00
Sebastian Reichel
9f2231795b drm/omap: drop omapdss-boot-init 
The table of compatible values needed to be prefixed with "omapdss,"
is empty, so all of this code is doing nothing now. Let's drop it.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-34-tomi.valkeinen@ti.com
 2020-12-15 16:08:24 +02:00
Sebastian Reichel
1cac9ba252 drm/omap: dsi: convert to drm_panel 
This converts the DSI module to expect common drm_panel display
drivers instead of dssdev based ones.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-33-tomi.valkeinen@ti.com
 2020-12-15 16:08:24 +02:00
Sebastian Reichel
e4869b048d drm/omap: dsi: drop custom panel capability support 
Due to previous changes the DSI encoder gets the capabilities
via DSI client's mode_flags and no longer needs the omapdss
specific caps. The core code now checks if the DSI encoder
is actually configured into command mode instead of just checking
the panel capabilities.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-32-tomi.valkeinen@ti.com
 2020-12-15 16:08:24 +02:00
Sebastian Reichel
e290c812eb drm/omap: dsi: Reverse direction of the DSS device enable/disable operations 
Complete the direction reversal of the DSS device enable/disable
operations started by commit 19b4200d8f ("drm/omap: Reverse direction
of the DSS device enable/disable operations").

This effectively drops the requirement of calling DSS specific
code from the DSI panel driver moving it a bit further to a
standard drm_panel driver.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-31-tomi.valkeinen@ti.com
 2020-12-15 16:08:24 +02:00
Sebastian Reichel
2a4703c25f drm/omap: dsi: move panel refresh function to host 
This moves the panel refresh/update function from the panel
driver into the DSI host driver to prepare for common drm_panel
support.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-30-tomi.valkeinen@ti.com
 2020-12-15 16:08:23 +02:00
Sebastian Reichel
66c6bf3af6 drm/omap: dsi: do ULPS in host driver 
Move ULPS handling into the DSI host controller, so that we
no longer need a custom API for the DSI client.

Note that for now ULPS is always disabled.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-29-tomi.valkeinen@ti.com
 2020-12-15 16:08:23 +02:00
Sebastian Reichel
9f0eb51e3c drm/omap: dsi: untangle ulps ops from enable/disable 
Create a custom function pointer for ULPS and use it instead of
reusing disable/enable functions for ULPS mode switch. This allows
us to use the common disable/enable functions pointers for DSI.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-28-tomi.valkeinen@ti.com
 2020-12-15 16:08:23 +02:00
Sebastian Reichel
0c93a61db4 drm/omap: dsi: do bus locking in host driver 
This moves the bus locking into the host driver and unexports
the custom API in preparation for drm_panel support.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-27-tomi.valkeinen@ti.com
 2020-12-15 16:08:23 +02:00
Sebastian Reichel
e9c7a0d713 drm/omap: dsi: drop custom enable_te() API 
Instead of using the custom enable_te() API, this automatically
enables/disables TE core support when a matching packet is sent
to the panel.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-26-tomi.valkeinen@ti.com
 2020-12-15 16:08:23 +02:00
Sebastian Reichel
4c1b935fea drm/omap: dsi: move TE GPIO handling into core 
In preparation for removing custom DSS calls from the DSI
panel driver, this moves support for external tearing event
GPIOs into the DSI host driver. This way tearing events are
always handled in the core resulting in simplification of
the panel drivers.

The TE GPIO acquisition follows works in the same way as the
exynos DSI implementation.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-25-tomi.valkeinen@ti.com
 2020-12-15 16:08:22 +02:00
Sebastian Reichel
3220034b12 drm/omap: dsi: lp/hs switching support for transfer() 
Integrate low-power / high-speed bus switching into transfer
function and drop the omapdrm specific enable_hs() callback.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-24-tomi.valkeinen@ti.com
 2020-12-15 16:08:22 +02:00
Sebastian Reichel
61714cd309 drm/omap: panel-dsi-cm: use bulk regulator API 
Use bulk regulator API to simplify the code. This also switches
from _optional variant to normal variant, which will provide a
dummy regulator (i.e. if some always-enabled regulator is not
described in DT).

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-23-tomi.valkeinen@ti.com
 2020-12-15 16:08:22 +02:00
Sebastian Reichel
68ca91d7d8 drm/omap: dsi: use pixel-format and mode from attach 
In order to reduce the amount of custom functionality, this moves
handling of pixel format and DSI mode from set_config() to dsi
attach.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-22-tomi.valkeinen@ti.com
 2020-12-15 16:08:22 +02:00
Sebastian Reichel
d4b561c376 drm/omap: dsi: drop useless sync() 
The DSI sync() function only locks the bus and then releases
it again. Currently the only invocation is directly before
update(), which locks the bus anyways.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-21-tomi.valkeinen@ti.com
 2020-12-15 16:08:22 +02:00
Sebastian Reichel
8228cd7ec3 drm/omap: dsi: drop unused enable_te() 
enable_te() is not used, so the custom API can be dropped.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-20-tomi.valkeinen@ti.com
 2020-12-15 16:08:22 +02:00
Sebastian Reichel
e869152d5a drm/omap: dsi: drop unused get_te() 
The get_te() callback is not used, so we can drop the
custom API.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-19-tomi.valkeinen@ti.com
 2020-12-15 16:08:21 +02:00
Sebastian Reichel
e94793ee8e drm/omap: dsi: drop unused memory_read() 
memory_read is not used, so we can drop the code.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-18-tomi.valkeinen@ti.com
 2020-12-15 16:08:21 +02:00
Sebastian Reichel
7c5662babf drm/omap: panel-dsi-cm: use common MIPI DCS 1.3 defines 
Drop local definition of common MIPI DCS 1.3 defines.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-17-tomi.valkeinen@ti.com
 2020-12-15 16:08:21 +02:00
Sebastian Reichel
ea83647d5e drm/omap: panel-dsi-cm: drop hardcoded VC 
Use dsi->channel everywhere, which originates from DT.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-16-tomi.valkeinen@ti.com
 2020-12-15 16:08:21 +02:00
Sebastian Reichel
a5f2dcdebd drm/omap: dsi: request VC via mipi_dsi_attach 
Drop custom request_vc/release_vc callbacks by using the
generic mipi_dsi_attach/mipi_dsi_detach functions.

To use mipi_dsi_attach() we need to fill in the mipi_dsi_device fields,
and some of these fields overlap with the fields in omap_dss_dsi_config.
In later patches the latter will get dropped.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-15-tomi.valkeinen@ti.com
 2020-12-15 16:08:21 +02:00
Sebastian Reichel
d4cf153728 drm/omap: panel-dsi-cm: use DSI helpers 
After converting the driver to mipi_dsi_device we can use the generic
message helpers to simplify the driver a lot.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-14-tomi.valkeinen@ti.com
 2020-12-15 16:08:21 +02:00
Sebastian Reichel
9cd8782952 drm/omap: dsi: introduce mipi_dsi_host 
This moves from custom platform driver infrastructure to mipi_dsi_host
and mipi_dsi_device. Note, that this is a graduate step and the driver
only uses the devices types and transfer function, but not yet the new
device binding style or drm_panel.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-13-tomi.valkeinen@ti.com
 2020-12-15 16:08:20 +02:00
Sebastian Reichel
1ed6253856 drm/omap: dsi: switch dsi_vc_send_long/short to mipi_dsi_msg 
Simplify the DSI encoder by using mipi_dsi_msg for
dsi_vc_send_long and dsi_vc_send_short. Further improvements
require cleaning up the channel allocation code first.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-12-tomi.valkeinen@ti.com
 2020-12-15 16:08:20 +02:00
Sebastian Reichel
952545a23a drm/omap: dsi: simplify read functions 
Simplify the read related message handling by using the functionality
provided by CONFIG_DRM_MIPI_DSI.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-11-tomi.valkeinen@ti.com
 2020-12-15 16:08:20 +02:00
Sebastian Reichel
e709653863 drm/omap: dsi: simplify write function 
Simplify the write related messages handling by using the functionality
provided by CONFIG_DRM_MIPI_DSI.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-10-tomi.valkeinen@ti.com
 2020-12-15 16:08:20 +02:00
Sebastian Reichel
28d72874f8 drm/omap: dsi: drop virtual channel logic 
This drops the virtual channel logic. Afterwards DSI clients
request their channel number and get the virtual channel with
the same number or -EBUSY if already in use.

The change here is not strictly speaking correct, as it combines the VC
(DSI's "configuration block") and virtual channel ID (the ID sent in the
DSI packets). But as we currently only support a single DSI command mode
panel, this works fine: we always use VC0, and VC ID 0.

This needs more work to support video mode panels, but that can be done
after moving to DRM bridge and panel model, after which we can do that
work with the proper APIs.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-9-tomi.valkeinen@ti.com
 2020-12-15 16:08:20 +02:00
Sebastian Reichel
ccc2f2ae66 drm/omap: dsi: unexport specific data transfer functions 
After converting all DSI drivers, unexport the specific transfer
functions.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-8-tomi.valkeinen@ti.com
 2020-12-15 16:08:20 +02:00
Sebastian Reichel
fc3413a9b4 drm/omap: panel-dsi-cm: convert to transfer API 
This converts the panel-dsi-cm driver to use the transfer
API instead of specific functions, so that the specific
functions can be unexported and squashed into the generic
transfer function.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-7-tomi.valkeinen@ti.com
 2020-12-15 16:08:19 +02:00
Sebastian Reichel
9e8d3b92c2 drm/omap: dsi: add generic transfer function 
This prepares the driver for becoming a mipi_dsi_host implementation,
which provides a generic transfer function instead of all kind of
different read/write functions. The implementation will become more
elegant after unexporting the specific functions in the following
patches.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-6-tomi.valkeinen@ti.com
 2020-12-15 16:08:19 +02:00
Sebastian Reichel
ee0c365c9e drm/omap: constify write buffers 
The write buffers are not modified, so they can be constant.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-5-tomi.valkeinen@ti.com
 2020-12-15 16:08:19 +02:00
Sebastian Reichel
d0103cebe1 drm/omap: dsi: use MIPI_DSI_FMT_* instead of OMAP_DSS_DSI_FMT_* 
This replaces OMAP specific enum for pixel format with
common implementation.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-4-tomi.valkeinen@ti.com
 2020-12-15 16:08:16 +02:00
Sebastian Reichel
a29cc43c2c drm/omap: drop unused dsi.configure_pins 
The panel-dsi-cm's ddata->pin_config is always NULL, so this
callback is never called. Instead the DSI encoder gets the pin
configuration directly from DT.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-3-tomi.valkeinen@ti.com
 2020-12-15 16:07:28 +02:00
Sebastian Reichel
12db515bae Revert "drm/omap: dss: Remove unused omap_dss_device operations" 
This reverts commit e086558ae9 ("drm/omap: dss: Remove unused
omap_dss_device operations")

This is still needed by DSI. E.g. unloading modules without this will
cause a crash.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-2-tomi.valkeinen@ti.com
 2020-12-15 16:07:28 +02:00
Jyri Sarha
64ff189118 drm/omap: Enable COLOR_ENCODING and COLOR_RANGE properties for planes 
Adds support for COLOR_ENCODING and COLOR_RANGE properties to
omap_plane.c and dispc.c. The supported encodings and ranges are
presets are:

For COLOR_ENCODING:
- YCbCr BT.601 (default)
- YCbCr BT.709

For COLOR_RANGE:
- YCbCr limited range
- YCbCr full range (default)

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201103080310.164453-6-tomi.valkeinen@ti.com
 2020-12-15 15:46:03 +02:00
Tomi Valkeinen
1bea53df4d drm/omap: rearrange includes in omapdss.h 
Drop "uapi/" and rearrange alphabetically.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201103080310.164453-5-tomi.valkeinen@ti.com
 2020-12-15 15:46:03 +02:00
Jyri Sarha
f18f43992e drm/omap: Implement CTM property for CRTC using OVL managers CPR matrix 
Implement CTM color management property for OMAP CRTC using DSS
overlay manager's Color Phase Rotation matrix. The CPR matrix does not
exactly match the CTM property documentation. On DSS the CPR matrix is
applied after gamma table look up. However, it seems stupid to add a
custom property just for that.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201103080310.164453-4-tomi.valkeinen@ti.com
 2020-12-15 15:46:03 +02:00
Tomi Valkeinen
3fcd70c9a5 drm/omap: use degamma property for gamma table 
omapdrm supports gamma via GAMMA_LUT property. However, the HW we have
is:

gamma -> ctm -> out

instead of what the model DRM framework uses:

ctm -> gamma -> out

As the following patches add CTM support for omapdrm, lets first fix the
gamma.

This patch changes the property from GAMMA_LUT to DEGAMMA_LUT, and thus
we will have:

degamma -> ctm -> out

and the legacy ioctl will continue working as before.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201103080310.164453-3-tomi.valkeinen@ti.com
 2020-12-15 15:46:03 +02:00
Tomi Valkeinen
1b89774346 drm: add legacy support for using degamma for gamma 
The DRM core handles legacy gamma-set ioctl by setting GAMMA_LUT and
clearing CTM and DEGAMMA_LUT.

This works fine on HW where we have either:

degamma -> ctm -> gamma -> out

or

ctm -> gamma -> out

However, if the HW has gamma table before ctm, the atomic property
should be DEGAMMA_LUT, and thus we have:

degamma -> ctm -> out

This is fine for userspace which sets gamma table using the properties,
as the userspace can check for the existence of gamma & degamma, but the
legacy gamma-set ioctl does not work.

Change the DRM core to use DEGAMMA_LUT instead of GAMMA_LUT when the
latter is unavailable.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201211114237.213288-3-tomi.valkeinen@ti.com
 2020-12-15 15:46:03 +02:00
Tomi Valkeinen
6ca2ab8086 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
 2020-12-15 15:46:03 +02:00
Zqiang
5c0e4110f7 udlfb: Fix memory leak in dlfb_usb_probe 
The dlfb_alloc_urb_list function is called in dlfb_usb_probe function,
after that if an error occurs, the dlfb_free_urb_list function need to
be called.

BUG: memory leak
unreferenced object 0xffff88810adde100 (size 32):
  comm "kworker/1:0", pid 17, jiffies 4294947788 (age 19.520s)
  hex dump (first 32 bytes):
    10 30 c3 0d 81 88 ff ff c0 fa 63 12 81 88 ff ff  .0........c.....
    00 30 c3 0d 81 88 ff ff 80 d1 3a 08 81 88 ff ff  .0........:.....
  backtrace:
    [<0000000019512953>] kmalloc include/linux/slab.h:552 [inline]
    [<0000000019512953>] kzalloc include/linux/slab.h:664 [inline]
    [<0000000019512953>] dlfb_alloc_urb_list drivers/video/fbdev/udlfb.c:1892 [inline]
    [<0000000019512953>] dlfb_usb_probe.cold+0x289/0x988 drivers/video/fbdev/udlfb.c:1704
    [<0000000072160152>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396
    [<00000000a8d6726f>] really_probe+0x159/0x480 drivers/base/dd.c:554
    [<00000000c3ce4b0e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738
    [<00000000e942e01c>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844
    [<00000000de0a5a5c>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431
    [<00000000463fbcb4>] __device_attach+0x122/0x250 drivers/base/dd.c:912
    [<00000000b881a711>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491
    [<00000000364bbda5>] device_add+0x5ac/0xc30 drivers/base/core.c:2936
    [<00000000eecca418>] usb_set_configuration+0x9de/0xb90 drivers/usb/core/message.c:2159
    [<00000000edfeca2d>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238
    [<000000001830872b>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293
    [<00000000a8d6726f>] really_probe+0x159/0x480 drivers/base/dd.c:554
    [<00000000c3ce4b0e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738
    [<00000000e942e01c>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844
    [<00000000de0a5a5c>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431

Reported-by: syzbot+c9e365d7f450e8aa615d@syzkaller.appspotmail.com
Signed-off-by: Zqiang <qiang.zhang@windriver.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215063022.16746-1-qiang.zhang@windriver.com
 2020-12-15 13:44:14 +01:00
Tian Tao
c855af2f9c drm/hisilicon: Fix use-after-free 
Fix the problem of dev being released twice.
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 75 PID: 15700 at lib/refcount.c:28 refcount_warn_saturate+0xd4/0x150
CPU: 75 PID: 15700 Comm: rmmod Tainted: G            E     5.10.0-rc3+ #3
Hardware name: Huawei TaiShan 200 (Model 2280)/BC82AMDDA, BIOS 0.88 07/24/2019
pstate: 40400009 (nZcv daif +PAN -UAO -TCO BTYPE=--)
pc : refcount_warn_saturate+0xd4/0x150
lr : refcount_warn_saturate+0xd4/0x150
sp : ffff2028150cbc00
x29: ffff2028150cbc00 x28: ffff2028150121c0
x27: 0000000000000000 x26: 0000000000000000
x25: 0000000000000000 x24: 0000000000000003
x23: 0000000000000000 x22: ffff2028150cbc90
x21: ffff2020038a30a8 x20: ffff2028150cbc90
x19: ffff0020cd938020 x18: 0000000000000010
x17: 0000000000000000 x16: 0000000000000000
x15: ffffffffffffffff x14: ffff2028950cb88f
x13: ffff2028150cb89d x12: 0000000000000000
x11: 0000000005f5e0ff x10: ffff2028150cb800
x9 : 00000000ffffffd0 x8 : 75203b776f6c6672
x7 : ffff800011a6f7c8 x6 : 0000000000000001
x5 : 0000000000000000 x4 : 0000000000000000
x3 : 0000000000000000 x2 : ffff202ffe2f9dc0
x1 : ffffa02fecf40000 x0 : 0000000000000026
Call trace:
 refcount_warn_saturate+0xd4/0x150
 devm_drm_dev_init_release+0x50/0x70
 devm_action_release+0x20/0x30
 release_nodes+0x13c/0x218
 devres_release_all+0x80/0x170
 device_release_driver_internal+0x128/0x1f0
 driver_detach+0x6c/0xe0
 bus_remove_driver+0x74/0x100
 driver_unregister+0x34/0x60
 pci_unregister_driver+0x24/0xd8
 hibmc_pci_driver_exit+0x14/0xe858 [hibmc_drm]
 __arm64_sys_delete_module+0x1fc/0x2d0
 el0_svc_common.constprop.3+0xa8/0x188
 do_el0_svc+0x80/0xa0
 el0_sync_handler+0x8c/0xb0
 el0_sync+0x15c/0x180
CPU: 75 PID: 15700 Comm: rmmod Tainted: G            E     5.10.0-rc3+ #3
Hardware name: Huawei TaiShan 200 (Model 2280)/BC82AMDDA, BIOS 0.88 07/24/2019
Call trace:
 dump_backtrace+0x0/0x208
 show_stack+0x2c/0x40
 dump_stack+0xd8/0x10c
 __warn+0xac/0x128
 report_bug+0xcc/0x180
 bug_handler+0x24/0x78
 call_break_hook+0x80/0xa0
 brk_handler+0x28/0x68
 do_debug_exception+0x9c/0x148
 el1_sync_handler+0x7c/0x128
 el1_sync+0x80/0x100
 refcount_warn_saturate+0xd4/0x150
 devm_drm_dev_init_release+0x50/0x70
 devm_action_release+0x20/0x30
 release_nodes+0x13c/0x218
 devres_release_all+0x80/0x170
 device_release_driver_internal+0x128/0x1f0
 driver_detach+0x6c/0xe0
 bus_remove_driver+0x74/0x100
 driver_unregister+0x34/0x60
 pci_unregister_driver+0x24/0xd8
 hibmc_pci_driver_exit+0x14/0xe858 [hibmc_drm]
 __arm64_sys_delete_module+0x1fc/0x2d0
 el0_svc_common.constprop.3+0xa8/0x188
 do_el0_svc+0x80/0xa0
 el0_sync_handler+0x8c/0xb0
 el0_sync+0x15c/0x180
---[ end trace 00718630d6e5ff18 ]---

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1607941973-32287-1-git-send-email-tiantao6@hisilicon.com
 2020-12-15 05:49:21 -05:00
Maxime Ripard
f3c420fe19 drm/vc4: kms: Convert to atomic helpers 
Now that the semaphore is gone, our atomic_commit implementation is
basically drm_atomic_helper_commit with a somewhat custom commit_tail,
the main difference being that we're using wait_for_flip_done instead of
wait_for_vblanks used in the drm_atomic_helper_commit_tail helper.

Let's switch to using drm_atomic_helper_commit.

Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20201204151138.1739736-8-maxime@cerno.tech
 2020-12-15 11:36:13 +01:00