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GSI hardware generates an interrupt for each transfer completion. For multiple messages within a single transfer, this results in N interrupts for N messages, leading to significant software interrupt latency. To mitigate this latency, utilize Block Event Interrupt (BEI) mechanism. Enabling BEI instructs the GSI hardware to prevent interrupt generation and BEI is disabled when an interrupt is necessary. Large I2C transfer can be divided into chunks of messages internally. Interrupts are not expected for the messages for which BEI bit set, only the last message triggers an interrupt, indicating the completion of N messages. This BEI mechanism enhances overall transfer efficiency. Signed-off-by: Jyothi Kumar Seerapu <quic_jseerapu@quicinc.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.