- 19 Jul, 2020 40 commits
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Laurent Pinchart authored
The DT port nodes corresponding to the CSI-2 inputs belong to the CAMERARX instances. Move parsing of the DT properties to a new cal_camerarx_parse_dt() function, called by cal_camerarx_create(). Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by:
Benoit Parrot <bparrot@ti.com> Signed-off-by:
Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Laurent Pinchart authored
The cal_camerarx_create() function allocates resources with devm_*, and thus doesn't need any manual cleanup. Those won't hold true for long, as we will need to store resources that have no devm_* allocation variant in cal_camerarx. Furthermore, devm_kzalloc() is the wrong memory allocation API for structures that can be accessed from userspace, as device nodes can be kept open across device removal. Add a cal_camerarx_destroy() function to destroy a CAMERARX instance explicitly, and switch to kzalloc() for memory allocation. Signed-off-by:
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Laurent Pinchart authored
In cal_remove(), unregister the video devices as the first operation, before cleaning up the V4L2 objects, to avoid use-after-free. This isn't a complete solution yet, as video nodes can be kept open across unregistration. Signed-off-by:
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Laurent Pinchart authored
Create cal_ctx_v4l2_unregister() and cal_ctx_v4l2_cleanup() functions to unregister and cleanup the V4L2-related objects from the context, and call them in cal_remove() and in the error path of cal_probe(). Signed-off-by:
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Laurent Pinchart authored
There's no need to delay most of the video device initialization until the sensor subdevs are bound. Split the initialization and registration, and perform the initialization when creating the context. Signed-off-by:
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Laurent Pinchart authored
The v4l2_device structure is meant to represent the whole device. In the CAL case, this corresponds to the CAL, the CAMERARX instances and the connected sensors. There should thus be a single v4l2_device instance. Replace the per-context instance with a global instance in the cal_dev structure. Don't set the v4l2_device name manually as v4l2_device_register() sets it to a value that is suitable for the driver. Signed-off-by:
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Laurent Pinchart authored
To prepare for decoupling the v4l2_device from the cal_ctx, don't set the control handler in the v4l2_device and expect the video node to use it automatically, but set the video node control handler directly. This requires adding the sensor subdev controls to the control handler manually, as that operation was performed on the v4l2_device by v4l2_device_register_subdev(). Signed-off-by:
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Laurent Pinchart authored
Letting the v4l2_fwnode_endpoint_parse() function determine the bus type automatically is deprecated. Set the bus type to DPHY manually as the TI CAL only supports DPHY. Signed-off-by:
Tomi Valkeinen <tomi.valkeinen@ti.com> Reviewed-by:
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Laurent Pinchart authored
Replace the manual of_get_next_port() and of_get_next_endpoint() implementations and the corresponding logic in the caller with a call to of_graph_get_endpoint_by_regs(). This greatly simplifies OF parsing. Signed-off-by:
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Laurent Pinchart authored
Using the endpoint reg value to pass the CSI-2 source virtual channel ID in DT is a hack, isn't documented in the DT bindings, and isn't used in neither upstream DT nor TI official overlays. Hardcode the virtual channel to 0 to simplify reworking the code, proper virtual channel support will be implemented later. Signed-off-by:
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Laurent Pinchart authored
The cal_create_instance() function creates a CAL context. Rename it to cal_ctx_create() to make its purpose more explicit. Signed-off-by:
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Laurent Pinchart authored
The cal_probe() function is a bit long, add comments to delimitate sections in order to improve readability. The platform_set_drvdata() call is moved to a more logical place as a result. Signed-off-by:
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Laurent Pinchart authored
The cal_get_camerarx_regmap() function is called in a single place. Inline it in its caller, as it results in a clear code flow. Signed-off-by:
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Laurent Pinchart authored
Use the syscon_regmap_lookup_by_phandle_args() function to replace manual lookup of the syscon regmap offset. This simplifies the cal_camerarx_init_regmap() implementation. Signed-off-by:
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Laurent Pinchart authored
Simplify the cal_probe() function by splitting the CAMERARX syscon regmap retrieval to a separate function. A few local variables are renamed in the process to shorten them (syscon_camerrx_*) or to make them more accurate (parent isn't the parent OF node but the CAL device's own OF node). Signed-off-by:
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Laurent Pinchart authored
The v4l2_dev field of the cal_dev structure is initialized but never used. Drop it. Signed-off-by:
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Laurent Pinchart authored
Replace a manually unrolled loop with an explicit for loop to increase readability when creating the CAMERARX and context instances. The explicit NULL initialization of cal->phy[] and cal->ctx[] is removed, as the cal structure is zeroed when allocated. Signed-off-by:
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Laurent Pinchart authored
Use the context-specific print macro to replace the last usage of the v4l2_* print macros. Signed-off-by:
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Laurent Pinchart authored
Instead of retrieving the struct device for the platform device from the v4l2_device, get it from the platform device directly. This prepares for cleanups related to v4l2_device handling. Signed-off-by:
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Laurent Pinchart authored
The v4l2_capability bus_info field, filled by the VIDIOC_QUERYCAP ioctl handler, specifies the location of the device in the system. For platform devices, V4L2 specifies that the value must be "platform:" followed by the device name. Fix the cal_querycap() function to set the right value. Signed-off-by:
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Laurent Pinchart authored
The csi2_port field of the cal_ctx structure holds the context index, and is independent from the CSI-2 port (even if it currently has the same numerical value). Rename it to index to avoid the ambiguity. Signed-off-by:
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Laurent Pinchart authored
Increase readability by reorganizing the remaining code in sections. No functional change is included. Signed-off-by:
Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by:
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Laurent Pinchart authored
Rename all functions related to contexts with a cal_ctx_ prefix to increase readability. Signed-off-by:
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Laurent Pinchart authored
The cal_data_get_num_csi2_phy() function simply returns cal->data->num_csi2_phy, and is not consistently used across the driver, as most accesses to cal->data->num_csi2_phy are open-coded. We could fix those open-coded accesses to use cal_data_get_num_csi2_phy(), but that wouldn't bring much in terms of readability, so inline cal_data_get_num_csi2_phy() in its only caller instead, and drop the function. Signed-off-by:
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Laurent Pinchart authored
Group the CAMERARX functions together to make the overall driver structure easier to navigate. This only moves functions around, no functional change is included. Signed-off-by:
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Laurent Pinchart authored
Rename all functions related to CAMERARX with a cal_camerarx_ prefix, and pass them a cal_camerarx pointer. This performs most of the decoupling of the CAMERARX from the context. Signed-off-by:
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Laurent Pinchart authored
The sensor is connected to the CAMERARX. Store its pointer, as well as the sensor pixel rate and the endpoint, in the cal_camerarx. This prepares for decoupling the cal_camerarx and cal_ctx. Signed-off-by:
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Laurent Pinchart authored
Prepare for passing the cal_camerarx pointer instead of the cal_ctx pointer to CAMERARX-related functions by adding print macros for cal_camerarx. Signed-off-by:
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Laurent Pinchart authored
Use the dev_* print macros instead of the v4l2_* print macros. This prepares for a common print infrastructure that will also support the cal_camerarx instances. Signed-off-by:
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Laurent Pinchart authored
Store a pointer to the cal_dev and the cal_camerarx instance number in the cal_camerarx structure. This prepares for passing a cal_camerarx pointer instead of a cal_ctx pointer to multiple functions that deal with the CAMERARX. Signed-off-by:
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Laurent Pinchart authored
The cal_camerarx structure describes the PHY, there's no need for an internal structure named phy. Removed that level of indirection. Signed-off-by:
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Laurent Pinchart authored
Name all variables that point to a cal_camerax instance 'phy' instead of 'cc'. The name 'cc' refers to Camera Core, but is not commonly used in the driver or in datasheets. Signed-off-by:
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Laurent Pinchart authored
Name all variables pointing to a cal_dev instance 'cal', instead of a combination of 'caldev' and 'dev'. 'caldev' is only used in a few places and could have been renamed to 'dev', but 'dev' is confusing as it's also used for struct device instances. This generates lots of changes, but increases readability. Signed-off-by:
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Laurent Pinchart authored
The cal_csi2_phy contains platform data for the CAMERARX blocks. Rename it to cal_camerarx_data. Signed-off-by:
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Laurent Pinchart authored
The various data structures that describe the components of the camera access layer (CAL) are named without much consistency. Start cleaning this up by renaming the structure that describes the CAMERARX block, cc_data, to cal_camerarx. Signed-off-by:
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Laurent Pinchart authored
Move the csi2_phy_config() function to avoid its forward declaration. No functional change is included. Signed-off-by:
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Laurent Pinchart authored
The cal_dev flags field is a copy of data->flags. Use the latter and remove the former. Signed-off-by:
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Laurent Pinchart authored
Remove structure fields that are never set, set and never read, or set to a fixed value. This allows removal of a global variable and a macro. Signed-off-by:
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Laurent Pinchart authored
The global static const cal_regmap_config template is only used in a single location, to initialize 3 fields of a local variable. Two of those fields then get overwritten. Remove the template and set the last remaining field manually. Simplify the code by hardcoding the field values instead of calculating them for a variable that always has the same value. Signed-off-by:
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Laurent Pinchart authored
Now that no platform data fields are modified at runtime, make the corresponding structures const. The const qualifier for integer fields is removed as it's not required anymore. Signed-off-by:
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