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The omap_dss_device type and output_type fields differ mostly for
historical reasons. The output_type field is required for all devices
but the display at the end of the pipeline, and must be set to
OMAP_DISPLAY_TYPE_NONE for the latter. The type field is required for
all devices but the internal encoder, for which it is ignored.
The only reason why the output_type field must be set to
OMAP_DISPLAY_TYPE_NONE for the display at the end of the pipeline is to
identify omap_dss_device instances corresponding to displays. This is
not documented and confusing.
Clean the code by adding a new display field to the omap_dss_device
structure to identify displays, and merge the type and output_type
fields.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Tested-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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Replace internal usage of struct videomode with struct drm_display_mode
in order to avoid converting needlessly between the data structures.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Tested-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The omap_dss_device .check_timings() and .set_timings() operations
operate on struct videomode, while the DRM API operates on struct
drm_display_mode. This forces conversion from to videomode in the
callers. While that's not a problem per se, it creates a difference with
the drm_bridge API.
Replace the videomode parameter to the .check_timings() and
.set_timings() operations with a drm_display_mode. This pushed the
conversion to videomode down to the DSS devices in some cases. If needed
they will be converted to operate on drm_display_mode natively.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Tested-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The mode setting handler of the VENC stores the video mode internally,
to then convert it to a configuration when programming the hardware. The
stored mode is otherwise unused. Cache the configuration directly
instead.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Tested-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The TV encoder supports both PAL and NTSC modes, but when queried for
the list of modes it supports, only the currently selected mode is
reported. Fix it and report the two modes unconditionally.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Tested-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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Instead of manually iterating over the dss devices in the pipeline to
find the first one that implements the .get_modes() operation, add a new
operation flag for .get_modes() and use the omap_connector_find_device()
helper function to locate the right dss device.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Tested-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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omap_dss_device operations expose fixed video timings through a
.get_timings() operation that return a single timing for the device. To
prepare for the move to drm_bridge, modify the API to instead add DRM
modes directly to the connector.
As this puts more burden on display devices, we also create a helper
function for panels to add a single DRM mode from the panel video
timings.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Tested-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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All the internal encoders share common init and cleanup code. Factor it
out to separate functions.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Tested-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The omapdrm and omapdss drivers are architectured based on display
pipelines made of multiple components handled from sink (display) to
source (DSS output). This is incompatible with the DRM bridge and panel
APIs that handle components from source to sink.
Reconcile the omapdrm and omapdss drivers with the DRM bridge and panel
model by reversing the direction of the DSS device .enable() and
.disable() operations. This completes the move to the DRM bridge model,
with the notable exception of the DSI pipelines that will require more
work.
We also adapt the omapdss shutdown handler dss_shutdown() to shut down
all active pipelines starting from the pipeline output device instead of
the display device.
As a consequence the for_each_dss_display() macro isn't used and can be
removed, and the omapdss_device_get_next() function underlying the macro
can be simplified to search for output devices only.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Tested-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The internal encoders return an error from their .enable() handler when
their are not connected to a dss manager. As the flag used is set and
cleared in the connect and disconnect handlers, this effectively checks
whether the omap_dss_device is connected.
The .enable() handler is called from code paths that access the dss
devices chain from the display device, which is set to NULL when the
device isn't connected, making it impossible to access the device in
that case.
The safety check is thus not needed, remove it.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Tested-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The venc_device structure wss_data field is set to 0 and never otherwise
modified, remove it.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Tested-by: Sebastian Reichel <[email protected]>
Reviewed-by: Tomi Valkeinen <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The internal encoders (DSI, HDMI4, HDMI5 and VENC) runtime PM handlers
attempt to manage the runtime PM state of the connected DISPC, based on
the rationale that the DISPC providing data to the encoders requires
ensuring that the display is active whenever the encoders are active.
While the DISPC provides data to the encoders, it doesn't as such
constitute a resource that encoders require in order to be taken out
of suspend, contrary to for instance a functional clock or a power
supply. Encoders registers can be accessed without the DISPC being
active, and while the encoders will not output any video stream without
being fed by the DISPC, the DISPC PM state doesn't influence the
encoders PM state.
For this reason the DISPC PM state is better managed from the omapdrm
driver, in the CRTC enable and disable operations. This allows the
encoders PM state to be handled separately from the DISPC, and in
particular at times when the DISPC may not be available (for instance at
probe due to the DSS probe being deferred, or at remove time du to the
DISPC being already removed).
Fixes: edb715dffdee ("drm/omap: dss: dsi: Move initialization code from bind to probe")
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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Instead of calling the .set_timings() operation recursively from the
display device backwards, iterate over the devices manually in the DRM
encoder code. This moves the complexity to a single central location and
simplifies the logic in omap_dss_device drivers.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The video timings are stored in the CRTC structure by the
omap_crtc_dss_set_timings() function, called by dss_mgr_set_timings()
from the .enable() operation of the internal encoders. This instead
belongs to the .set_timings() code paths. Move the
omap_crtc_dss_set_timings() calls accordingly.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The VENC encoder modifies the requested video mode to match the NTSC or
PAL timings (or reject the video mode completely) in the .set_timings()
operation. This should be performed in the .check_timings() operation
instead. Move the fixup.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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Timings for the TV output are currently reported by the analog TV
connector. This has the disadvantage of having to handle timing-related
operations in a connector omap_dss_device that has, at the hardware
level, no knowledge of any timing information.
Implement the .get_timings() operation in the venc driver, and get
timings from the first component in the pipeline that implements the
operatation. This switches the duty of reporting analog TV timings from
the connector to the encoder.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The .set_timings() operations of the omap_dss_device instances don't
need to modify the passed timings. Make the pointer const.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The dss_mgr .connect() and .disconnect() are implemented as no-op in
omapdrm. The operations are unneeded, remove them.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The omap_dss_device.dispc_channel_connect field is used by DSS outputs
to fail the .enable() operation if they're not connected. Set the field
directly from the (dis)connect handlers of the DSS outputs instead of
going through the CRTC dss_mgr operations.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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To simplify the pipeline disconnection handling merge the
omapdss_device_disconnect() and omapdss_output_unset_device() functions.
The device state check is now called for every device in the pipeline,
extending this sanity check coverage.
There is no need to return an error from omapdss_device_disconnect()
when the check fails, as omapdss_output_unset_device() used to do, given
that we can't prevent disconnection due to device unbinding (the return
value of omapdss_output_unset_device() is never checked in the current
code for that reason).
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The display type is validated when the display is connected to the DSS
output. We already have all the information we need for validation when
initializing the outputs. Move validation to output initialization to
simplify pipeline connection handling.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The omapdrm and omapdss drivers are architectured based on display
pipelines made of multiple components handled from sink (display) to
source (DSS output). This is incompatible with the DRM bridge and panel
APIs that handle components from source to sink.
To reconcile the omapdrm and omapdss drivers with the DRM bridge and
panel model, we need to reverse the direction of the DSS device
operations. Start with the connect and disconnect operations.
Signed-off-by: Laurent Pinchart <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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Regulators for the DPI, DSI, HDMI, SDI and VENC outputs are all looked
up when connecting the output omap_dss_device. There's no need to delay
regulator handling to that time, get the regulators at probe time.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The dss_mgr_connect() and dss_mgr_disconnect() functions take two
omap_dss_device pointers as parameters, which are always set to the same
value by all callers. Remove the duplicated pointer.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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Look up the next dssdev at probe time based on device tree links for all
DSS outputs and encoders. This will be used to reverse the order of the
dssdev connect and disconnect call chains.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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There's no reason to delay initialization of most of the driver (such as
mapping memory I/O or enabling runtime PM) to the component bind
handler. Perform as much of the initialization as possible at probe
time, initializing at bind time only the parts that depends on the DSS.
The cleanup code is moved from unbind to remove in a similar way.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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Rename the jump labels according to the cleanup they perform, not the
location they're accessed from, and move functions from error checks to
cleanup paths, and move reference handling to simplify cleanup.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The omap_dss_device port_num field stores the DT port number associated
with the device. The field is used in different ways depending on the
device type:
- For DPI outputs, the port number is used as an identifier of the DPI
instance
- For sources, the port number is used to look up the omap_dss_device by
DT port node
As omap_dss_device instances are only looked up as sources by sinks,
setting the field to the number of the source port works for both use
cases.
However, to enable looking up sinks, we need to record all the ports
associated with an omap_dss_device. Do so by turning the port_num field
into an of_ports bitmask. For DPI outputs the port number is
additionally stored in the dpi_data structure as the output ID.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The output devices list isn't used anymore, all output devices are
accessed through the global devices list. Remove it.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The encoders duplicate the same omap_dss_device src and dst fields set
and checks in their connect and disconnect handlers. Move the code to
the connect and disconnect wrappers.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The various types of omapdss_*_ops structures define multiple operations
that are not specific to a bus type. To simplify the code and remove
dependencies on specific bus types move those operations to a common
structure. Operations that are specific to a bus type are kept in the
specialized ops structures.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The get_timings operation from DSS encoders (not to be confused with the
identically named operation in omap_dss_driver) is never called. Remove
it.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The operations are never used, remove them. If the need to set wide
screen signaling data arises later, it should be implemented by
extending the DRM bridge API.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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Change [email protected] to [email protected].
Signed-off-by: Tomi Valkeinen <[email protected]>
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The venc private data structure is currently stored as a global
variable. While no platform with multiple VENC encoders currently exists
nor is planned, this doesn't comply with the kernel device model and
should thus be fixed.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
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This removes the need to access the global DISPC private data in those
functions (both for the current accesses and the future ones that will
be introduced when allocating the DISPC private data dynamically).
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
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This removes the need to access the global DISPC private data in those
functions (both for the current accesses and the future ones that will
be introduced when allocating the DISPC private data dynamically).
In order to allow the omapdrm side to call the dispc_ops with a DISPC
pointer, we also introduce a new function dss_get_dispc() to retrieve
the DISPC corresponding to the DSS.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
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The dss_mgr_*() functions take a channel argument to identify the
channel they operate on. This prevents the functions from accessing
driver data structures without resorting to global variables. In an
effort to remove global variables, pass the omap_dss_device pointer
associated with the channel instead. This will be used to look up the
omap_drm_private data structure to pass to the dss_mgr_ops.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
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As part of an effort to remove the usage of global variables in the
driver, store the debugfs root directory in the dss_device structure
instead of a global variable.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
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To simplify implementation of debugfs seq_file show handlers, the driver
passes the pointer to the show function through the debugfs_create_file
data pointer. This prevents using the pointer to pass driver private
data to the show handler, and requires all handlers to use global
variables to access private data.
To prepare for the removal of global private data in the driver, rework
the debugfs infrastructure to allow passing a private data pointer to
show handlers.
The price to pay is explicit removal of debugfs files to free the
internally allocated memory. This is desirable anyway as debugfs entries
should be removed when a component driver is unbound, otherwise crashes
will occur due to access to freed memory when the components will be
dynamically allocated instead of stored in global variables.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
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This removes the need to access the global DSS private data in those
functions (both for the current accesses and the future ones that will
be introduced when allocating the DSS device dynamically).
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
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Currently, calls into each file are used to register the various
platform drivers. Change this to a table of pointers to platform_driver
structs to allow using platform_register_drivers.
Signed-off-by: Andrew F. Davis <[email protected]>
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Having the filename in the header serves little purpose and is
often wrong after renames as it is here in several places, just
drop it from all omapdrm files.
While we are here unify the copyright tags to the TI recommended style.
Signed-off-by: Andrew F. Davis <[email protected]>
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The venc_probe_of() function has an error cleanup path that returns
success instead of an error code. Fix it.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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omapdrm rejects all venc (analog tv-out) videomodes, due to somewhat
strict checking of the values, making tv-out unusable.
We only support two videomodes, one for PAL and one for NTSC, so instead
of trying to check every field in the videomode struct, this patch makes
the driver check only the pixel clock and the size of the display.
Signed-off-by: Tomi Valkeinen <[email protected]>
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The header file only contains four macros, two of which are never used.
Move the other two to dss.h and remove dss_features.h.
Signed-off-by: Laurent Pinchart <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The FEAT_VENC_REQUIRES_TV_DAC_CLK is specific to the VENC, move it from
the omap_dss_features structure to the venc driver.
Signed-off-by: Laurent Pinchart <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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The two variables are never used outside of their compilation unit, make
them static.
Signed-off-by: Laurent Pinchart <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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Non-DT booting is no longer supported, so remove legacy code.
Signed-off-by: Tomi Valkeinen <[email protected]>
Reviewed-by: Laurent Pinchart <[email protected]>
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All OMAP platforms use DT nowadays, drop support for non-DT devices.
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Tomi Valkeinen <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
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