On 05/10/2018 08:44 AM, Oleksandr Shamray wrote:
> Initial patch for JTAG driver
> JTAG class driver provide infrastructure to support hardware/software
> JTAG platform drivers. It provide user layer API interface for flashing
> and debugging external devices which equipped with JTAG interface
> using standard transactions.
> ---
> Documentation/ioctl/ioctl-number.txt | 2 +
> MAINTAINERS | 10 ++
> drivers/Kconfig | 2 +
> drivers/Makefile | 1 +
> drivers/jtag/Kconfig | 16 ++
> drivers/jtag/Makefile | 1 +
> drivers/jtag/jtag.c | 273
> ++++++++++++++++++++++++++++++++++
> include/linux/jtag.h | 41 +++++
> include/uapi/linux/jtag.h | 105 +++++++++++++
> 9 files changed, 451 insertions(+), 0 deletions(-)
> create mode 100644 drivers/jtag/Kconfig
> create mode 100644 drivers/jtag/Makefile
> create mode 100644 drivers/jtag/jtag.c
> create mode 100644 include/linux/jtag.h
> create mode 100644 include/uapi/linux/jtag.h
>
> diff --git a/drivers/jtag/Kconfig b/drivers/jtag/Kconfig
> new file mode 100644
> index 0000000..5e2c75b
> --- /dev/null
> +++ b/drivers/jtag/Kconfig
> @@ -0,0 +1,16 @@
> +menuconfig JTAG
> + tristate "JTAG support"
> + help
> + This provides basic core functionality support for jtag class devices
JTAG class devices.
> + Hardware equipped with JTAG microcontroller which can be built
I'm having problems understanding the line above + first 1/2 of the line below.
Maybe something like:
Hardware that is equipped with a JTAG microcontroller can be
supported by using this driver's interfaces.
> + on top of this drivers. Driver exposes the set of IOCTL to the
This driver exposes a set of IOCTLs to
> + user space for:
> + SIR (Scan Instruction Register, IEEE 1149.1 Data Register scan);
^^^^? Instruction?
> + SDR (Scan Data Register, IEEE 1149.1 Instruction Register scan);
^^^^^^^^^^^? Data?
> + RUNTEST (Forces IEEE 1149.1 bus to a run state for specified
> + number of clocks).
> +
> + If you want this support, you should say Y here.
> +
> + To compile this driver as a module, choose M here: the module will
> + be called jtag.
--
~Randy
