linux-kernel - Re: [patch v14 1/4] drivers: jtag: Add JTAG core driver

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Date:   Thu, 14 Dec 2017 19:13:06 +0100
From:   Philippe Ombredanne <pombredanne@...b.com>
To:     Oleksandr Shamray <oleksandrs@...lanox.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        LKML <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        OpenBMC Maillist <openbmc@...ts.ozlabs.org>, joel@....id.au,
        Jiří Pírko <jiri@...nulli.us>,
        Tobias Klauser <tklauser@...tanz.ch>,
        linux-serial@...r.kernel.org, vadimp@...lanox.com,
        system-sw-low-level@...lanox.com, Rob Herring <robh+dt@...nel.org>,
        openocd-devel-owner@...ts.sourceforge.net,
        linux-api@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Jiri Pirko <jiri@...lanox.com>
Subject: Re: [patch v14 1/4] drivers: jtag: Add JTAG core driver

Oleksandr,

On Thu, Dec 14, 2017 at 5:29 PM, Oleksandr Shamray
<oleksandrs@...lanox.com> 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.
>
> Driver exposes set of IOCTL to user space for:
> - XFER:
> - SIR (Scan Instruction Register, IEEE 1149.1 Data Register scan);
> - SDR (Scan Data Register, IEEE 1149.1 Instruction Register scan);
> - RUNTEST (Forces the IEEE 1149.1 bus to a run state for a specified
>   number of clocks).
> - SIOCFREQ/GIOCFREQ for setting and reading JTAG frequency.
>
> Driver core provides set of internal APIs for allocation and
> registration:
> - jtag_register;
> - jtag_unregister;
> - jtag_alloc;
> - jtag_free;
>
> Platform driver on registration with jtag-core creates the next
> entry in dev folder:
> /dev/jtagX
>
> Signed-off-by: Oleksandr Shamray <oleksandrs@...lanox.com>
> Signed-off-by: Jiri Pirko <jiri@...lanox.com>
> ---
> v13->v14
> Comments pointed by Philippe Ombredanne <pombredanne@...b.com>
> - Change style of head block comment from /**/ to //
>
> v12->v13
> Comments pointed by Philippe Ombredanne <pombredanne@...b.com>
> - Change jtag.c licence type to
>   SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
>   and reorder line with license in description
> v11->v12
> Comments pointed by Greg KH <gregkh@...uxfoundation.org>
> - Change jtag.h licence type to
>   SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
>   and reorder line with license in description

Thanks for the SPDX bits: for this part you have my ack:

Acked-by: Philippe Ombredanne <pombredanne@...B.com?

-- 
Cordially
Philippe Ombredanne