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78ba0d79b7
As a top MC video driver, the microchip-isc should not propagate the format to the subdevice, it should rather check at start_streaming() time if the subdev is properly configured with a compatible format. Removed the whole format finding logic, and reworked the format verification at start_streaming time, such that the ISC will return an error if the subdevice is not properly configured. To achieve this, media_pipeline_start is called and a link_validate callback is created to check the formats. With this being done, the module parameter 'sensor_preferred' makes no sense anymore. The ISC should not decide which format the sensor is using. The ISC should only cope with the situation and inform userspace if the streaming is possible in the current configuration. The redesign of the format propagation has also risen the question of the enumfmt callback. If enumfmt is called with an mbus_code, the enumfmt handler should only return the formats that are supported for this mbus_code. Otherwise, the enumfmt will report all the formats that the ISC could output. With this rework, the dynamic list of user formats is removed. It makes no more sense to identify at complete time which formats the sensor could emit, and add those into a separate dynamic list. The ISC will start with a simple preconfigured default format, and at link validate time, decide whether it can use the format that is configured on the sink or not. >From now on, the driver also advertises the IO_MC capability. Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
62 lines
1.8 KiB
Plaintext
62 lines
1.8 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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comment "Microchip Technology, Inc. media platform drivers"
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config VIDEO_MICROCHIP_ISC
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tristate "Microchip Image Sensor Controller (ISC) support"
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depends on V4L_PLATFORM_DRIVERS
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depends on VIDEO_DEV && COMMON_CLK
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depends on ARCH_AT91 || COMPILE_TEST
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select MEDIA_CONTROLLER
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select VIDEO_V4L2_SUBDEV_API
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select VIDEOBUF2_DMA_CONTIG
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select REGMAP_MMIO
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select V4L2_FWNODE
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select VIDEO_MICROCHIP_ISC_BASE
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help
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This module makes the Microchip Image Sensor Controller available
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as a v4l2 device.
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To compile this driver as a module, choose M here: the
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module will be called microchip-isc.
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config VIDEO_MICROCHIP_XISC
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tristate "Microchip eXtended Image Sensor Controller (XISC) support"
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depends on V4L_PLATFORM_DRIVERS
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depends on VIDEO_DEV && COMMON_CLK
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depends on ARCH_AT91 || COMPILE_TEST
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select VIDEOBUF2_DMA_CONTIG
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select REGMAP_MMIO
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select V4L2_FWNODE
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select VIDEO_MICROCHIP_ISC_BASE
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select MEDIA_CONTROLLER
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select VIDEO_V4L2_SUBDEV_API
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help
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This module makes the Microchip eXtended Image Sensor Controller
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available as a v4l2 device.
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To compile this driver as a module, choose M here: the
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module will be called microchip-xisc.
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config VIDEO_MICROCHIP_ISC_BASE
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tristate
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default n
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help
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Microchip ISC and XISC common code base.
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config VIDEO_MICROCHIP_CSI2DC
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tristate "Microchip CSI2 Demux Controller"
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depends on V4L_PLATFORM_DRIVERS
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depends on VIDEO_DEV && COMMON_CLK && OF
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depends on ARCH_AT91 || COMPILE_TEST
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select MEDIA_CONTROLLER
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select VIDEO_V4L2_SUBDEV_API
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select V4L2_FWNODE
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help
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CSI2 Demux Controller driver. CSI2DC is a helper chip
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that converts IDI interface byte stream to a parallel pixel stream.
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It supports various RAW formats as input.
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To compile this driver as a module, choose M here: the
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module will be called microchip-csi2dc.
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