Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [PATCH v2 04/11] mfd:stixxxx-syscfg: Add ST System Configuration support. | Date | Mon, 10 Jun 2013 16:02:04 +0200 |
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On Monday 10 June 2013 14:52:38 Srinivas KANDAGATLA wrote: > On 10/06/13 14:16, Linus Walleij wrote: > > On Mon, Jun 10, 2013 at 11:22 AM, Srinivas KANDAGATLA > > <srinivas.kandagatla@st.com> wrote: > > > >> This mfd driver provides higher level inialization routines for various > >> IPs like Ethernet, USB, PCIE, SATA and so on. Also it provides way to > >> get to syscfg registers via standard regmap api which is usefull for > >> drivers like pinctrl. > >> > >> This patch adds support to ST System Configuration registers, which can > >> be configured by the drivers. > >> > >> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> > >> CC: Stuart Menefy <stuart.menefy@st.com> > >> CC: Stephen Gallimore <stephen.gallimore@st.com> > >> CC: Linus Walleij <linus.walleij@linaro.org> > >> CC: Mark Brown <broonie@kernel.org> > > > > What is this driver doing that drivers/mfd/syscon.c is not already > > doing? > > As of now, the driver is very much similar to syscon + some additional > functionality, but we are planning to use this file to add higher level > functions to configure different IPs like ethernet, usb, power, reset > and so on which are very much specific to ST System Configuration Registers.
I was expecting that you'd actually interface with the syscon code and build on top, rather than copy it.
There are multiple ways of doing that, e.g. you could export a function from syscon.c that you call to register the device node and then import the regmap from syscon into your high-level driver again.
Arnd
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