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    SubjectRe: [PATCH 00/12] misc: xilinx sd-fec driver
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    On 19. 03. 19 13:04, Dragan Cvetic wrote:
    > This patchset is adding the full Soft Decision Forward Error
    > Correction (SD-FEC) driver implementation, driver DT binding and
    > driver documentation.
    >
    > Forward Error Correction (FEC) codes such as Low Density Parity
    > Check (LDPC) and turbo codes provide a means to control errors in
    > data transmissions over unreliable or noisy communication
    > channels. The SD-FEC Integrated Block is an optimized block for
    > soft-decision decoding of these codes. Fixed turbo codes are
    > supported directly, whereas custom and standardized LDPC codes
    > are supported through the ability to specify the parity check
    > matrix through an AXI4-Lite bus or using the optional programmable
    > (PL)-based support logic. For the further information see
    > https://www.xilinx.com/support/documentation/ip_documentation/
    > sd_fec/v1_1/pg256-sdfec-integrated-block.pdf
    >
    > This driver is a platform device driver which supports SDFEC16
    > (16nm) IP. SD-FEC driver supports LDPC decoding and encoding and
    > Turbo code decoding. LDPC codes can be specified on
    > a codeword-by-codeword basis, also a custom LDPC code can be used.
    >
    > The SD-FEC driver exposes a char device interface and supports
    > file operations: open(), close(), poll() and ioctl(). The driver
    > allows only one usage of the device, open() limits the number of
    > driver instances. The driver also utilize Common Clock Framework
    > (CCF).
    >
    > The control and monitoring is supported over ioctl system call.
    > The features supported by ioctl():
    > - enable or disable data pipes to/from device
    > - configure the FEC algorithm parameters
    > - set the order of data
    > - provide a control of a SDFEC bypass option
    > - activates/deactivates SD-FEC
    > - collect and provide statistical data
    > - enable/disable interrupt mode
    >
    > Poll can be utilized to detect errors on IRQ trigger rather than
    > using looping status and stats ioctl's.
    >
    > Reviewed-by: Michal Simek <michal.simek@xilinx.com>

    I am not using this tag a lot that's why I am curious where you got it
    from? I can't see it in Xilinx tree too.

    Thanks,
    Michal

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