From: Tomasz Figa <tomasz.figa@gmail.com>
To: Pankaj Dubey <pankaj.dubey@samsung.com>,
linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: lee.jones@linaro.org, kgene.kim@samsung.com,
linux@arm.linux.org.uk, arnd@arndb.de, vikas.sajjan@samsung.com,
joshi@samsung.com, naushad@samsung.com, thomas.ab@samsung.com,
chow.kim@samsung.com, Tomasz Figa <t.figa@samsung.com>
Subject: Re: [PATCH v2] mfd: syscon: Decouple syscon interface from platform devices
Date: Tue, 02 Sep 2014 16:50:05 +0200 [thread overview]
Message-ID: <5405D91D.7020108@gmail.com> (raw)
In-Reply-To: <1409668935-10667-1-git-send-email-pankaj.dubey@samsung.com>
On 02.09.2014 16:42, Pankaj Dubey wrote:
> Currently a syscon entity can only be registered directly through a
> platform device that binds to a dedicated syscon driver. However in
> certain cases it is required to bind a device with it's dedicated
> driver rather than binding with syscon driver.
>
> For example, certain SoCs (e.g. Exynos) contain system controller
> blocks which perform various functions such as power domain control,
> CPU power management, low power mode control, but in addition contain
> certain IP integration glue, such as various signal masks,
> coprocessor power control, etc. In such case, there is a need to have
> a dedicated driver for such system controller but also share registers
> with other drivers. The latter is where the syscon interface is helpful.
>
> This patch decouples syscon object from syscon platform driver, and
> allows to create syscon objects first time when it is required by
> calling of syscon_regmap_lookup_by APIs and keeps a list of such syscon
> objects along with syscon provider device_nodes and regmap handles.
>
> Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
> ---
> V1 of this patchset [1] and related discussion can be found here [1].
>
> Changes since v1:
> - Removed of_syscon_unregister function.
> - Modified of_syscon_register function and it will be used by syscon.c
> to create syscon objects whenever required.
> - Removed platform device support from syscon.
> - Removed syscon_regmap_lookup_by_pdevname API support.
> - As there are significant changes w.r.t patchset v1, I am taking over
> author for this patchset from Tomasz Figa.
I guess you should also drop my Signed-off-by too. I think the best
thing would replacing it with my Suggested-by and adding Arnd's
Suggested-by too.
Best regards,
Tomasz
next prev parent reply other threads:[~2014-09-02 14:50 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-02 14:42 [PATCH v2] mfd: syscon: Decouple syscon interface from platform devices Pankaj Dubey
2014-09-02 14:50 ` Tomasz Figa [this message]
2014-09-02 15:20 ` Arnd Bergmann
2014-09-02 15:42 ` Alexander Shiyan
2014-09-02 17:40 ` Arnd Bergmann
2014-09-03 13:16 ` Boris BREZILLON
2014-09-03 13:49 ` Arnd Bergmann
2014-09-03 14:15 ` Boris BREZILLON
2014-09-04 4:45 ` Pankaj Dubey
2014-09-04 6:03 ` Boris BREZILLON
2014-09-05 8:14 ` Boris BREZILLON
2014-09-16 11:53 ` Pankaj Dubey
2014-09-16 14:52 ` Arnd Bergmann
2014-09-04 4:39 ` Pankaj Dubey
2014-09-04 4:52 ` Alexander Shiyan
2014-09-03 3:44 ` Vivek Gautam
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