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Message-ID: <20151008183242.7bcaff30@xhacker>
Date: Thu, 8 Oct 2015 18:32:42 +0800
From: Jisheng Zhang <jszhang@...vell.com>
To: Antoine Tenart <antoine.tenart@...e-electrons.com>
CC: <sebastian.hesselbarth@...il.com>, <linus.walleij@...aro.org>,
<catalin.marinas@....com>, <will.deacon@....com>,
<mark.rutland@....com>, <robh+dt@...nel.org>, <pawel.moll@....com>,
<ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>,
<devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-gpio@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/6] pinctrl: berlin: regmap as an extra argument of
berlin_pinctrl_probe()
Hi Antoine,
On Fri, 2 Oct 2015 15:04:56 +0200
Antoine Tenart <antoine.tenart@...e-electrons.com> wrote:
> Hi Jisheng,
>
> Thanks for providing this!
Just back from vocation. Thanks for the review feedbacks
>
> On Mon, Sep 21, 2015 at 06:04:15PM +0800, Jisheng Zhang wrote:
> > Let berlin_pinctrl_probe() accepts an extra argument: regmap, this is to
> > prepare for the next berlin4ct support, where we won't use simple-mfd
> > any more.
>
> Just a question here: why don't we have instead one
> berlin_pinctrl_probe() and one berlin_pinctrl_probe_regmap(), both
> calling a static probe function in berlin.c, to avoid duplicating code?
It's better! Will take this solution in v3
>
> Antoine
>
> > Signed-off-by: Jisheng Zhang <jszhang@...vell.com>
> > ---
> > drivers/pinctrl/berlin/berlin-bg2.c | 10 +++++++++-
> > drivers/pinctrl/berlin/berlin-bg2cd.c | 10 +++++++++-
> > drivers/pinctrl/berlin/berlin-bg2q.c | 10 +++++++++-
> > drivers/pinctrl/berlin/berlin.c | 9 +--------
> > drivers/pinctrl/berlin/berlin.h | 1 +
> > 5 files changed, 29 insertions(+), 11 deletions(-)
> >
> > diff --git a/drivers/pinctrl/berlin/berlin-bg2.c b/drivers/pinctrl/berlin/berlin-bg2.c
> > index 274c553..4aede2e 100644
> > --- a/drivers/pinctrl/berlin/berlin-bg2.c
> > +++ b/drivers/pinctrl/berlin/berlin-bg2.c
> > @@ -10,6 +10,7 @@
> > * warranty of any kind, whether express or implied.
> > */
> >
> > +#include <linux/mfd/syscon.h>
> > #include <linux/module.h>
> > #include <linux/of_device.h>
> > #include <linux/platform_device.h>
> > @@ -233,8 +234,15 @@ static int berlin2_pinctrl_probe(struct platform_device *pdev)
> > {
> > const struct of_device_id *match =
> > of_match_device(berlin2_pinctrl_match, &pdev->dev);
> > + struct device *dev = &pdev->dev;
> > + struct device_node *parent_np = of_get_parent(dev->of_node);
> > + struct regmap *regmap = syscon_node_to_regmap(parent_np);
> >
> > - return berlin_pinctrl_probe(pdev, match->data);
> > + of_node_put(parent_np);
> > + if (IS_ERR(regmap))
> > + return PTR_ERR(regmap);
> > +
> > + return berlin_pinctrl_probe(pdev, regmap, match->data);
> > }
> >
> > static struct platform_driver berlin2_pinctrl_driver = {
> > diff --git a/drivers/pinctrl/berlin/berlin-bg2cd.c b/drivers/pinctrl/berlin/berlin-bg2cd.c
> > index 0cb793a..6378dd8 100644
> > --- a/drivers/pinctrl/berlin/berlin-bg2cd.c
> > +++ b/drivers/pinctrl/berlin/berlin-bg2cd.c
> > @@ -10,6 +10,7 @@
> > * warranty of any kind, whether express or implied.
> > */
> >
> > +#include <linux/mfd/syscon.h>
> > #include <linux/module.h>
> > #include <linux/of_device.h>
> > #include <linux/platform_device.h>
> > @@ -176,8 +177,15 @@ static int berlin2cd_pinctrl_probe(struct platform_device *pdev)
> > {
> > const struct of_device_id *match =
> > of_match_device(berlin2cd_pinctrl_match, &pdev->dev);
> > + struct device *dev = &pdev->dev;
> > + struct device_node *parent_np = of_get_parent(dev->of_node);
> > + struct regmap *regmap = syscon_node_to_regmap(parent_np);
> >
> > - return berlin_pinctrl_probe(pdev, match->data);
> > + of_node_put(parent_np);
> > + if (IS_ERR(regmap))
> > + return PTR_ERR(regmap);
> > +
> > + return berlin_pinctrl_probe(pdev, regmap, match->data);
> > }
> >
> > static struct platform_driver berlin2cd_pinctrl_driver = {
> > diff --git a/drivers/pinctrl/berlin/berlin-bg2q.c b/drivers/pinctrl/berlin/berlin-bg2q.c
> > index a466054..907bdf0 100644
> > --- a/drivers/pinctrl/berlin/berlin-bg2q.c
> > +++ b/drivers/pinctrl/berlin/berlin-bg2q.c
> > @@ -10,6 +10,7 @@
> > * warranty of any kind, whether express or implied.
> > */
> >
> > +#include <linux/mfd/syscon.h>
> > #include <linux/module.h>
> > #include <linux/of_device.h>
> > #include <linux/platform_device.h>
> > @@ -395,8 +396,15 @@ static int berlin2q_pinctrl_probe(struct platform_device *pdev)
> > {
> > const struct of_device_id *match =
> > of_match_device(berlin2q_pinctrl_match, &pdev->dev);
> > + struct device *dev = &pdev->dev;
> > + struct device_node *parent_np = of_get_parent(dev->of_node);
> > + struct regmap *regmap = syscon_node_to_regmap(parent_np);
> >
> > - return berlin_pinctrl_probe(pdev, match->data);
> > + of_node_put(parent_np);
> > + if (IS_ERR(regmap))
> > + return PTR_ERR(regmap);
> > +
> > + return berlin_pinctrl_probe(pdev, regmap, match->data);
> > }
> >
> > static struct platform_driver berlin2q_pinctrl_driver = {
> > diff --git a/drivers/pinctrl/berlin/berlin.c b/drivers/pinctrl/berlin/berlin.c
> > index f495806..0557bbe 100644
> > --- a/drivers/pinctrl/berlin/berlin.c
> > +++ b/drivers/pinctrl/berlin/berlin.c
> > @@ -11,7 +11,6 @@
> > */
> >
> > #include <linux/io.h>
> > -#include <linux/mfd/syscon.h>
> > #include <linux/module.h>
> > #include <linux/of.h>
> > #include <linux/of_address.h>
> > @@ -293,19 +292,13 @@ static struct pinctrl_desc berlin_pctrl_desc = {
> > };
> >
> > int berlin_pinctrl_probe(struct platform_device *pdev,
> > + struct regmap *regmap,
> > const struct berlin_pinctrl_desc *desc)
> > {
> > struct device *dev = &pdev->dev;
> > - struct device_node *parent_np = of_get_parent(dev->of_node);
> > struct berlin_pinctrl *pctrl;
> > - struct regmap *regmap;
> > int ret;
> >
> > - regmap = syscon_node_to_regmap(parent_np);
> > - of_node_put(parent_np);
> > - if (IS_ERR(regmap))
> > - return PTR_ERR(regmap);
> > -
> > pctrl = devm_kzalloc(dev, sizeof(*pctrl), GFP_KERNEL);
> > if (!pctrl)
> > return -ENOMEM;
> > diff --git a/drivers/pinctrl/berlin/berlin.h b/drivers/pinctrl/berlin/berlin.h
> > index e1aa841..bf5781a 100644
> > --- a/drivers/pinctrl/berlin/berlin.h
> > +++ b/drivers/pinctrl/berlin/berlin.h
> > @@ -56,6 +56,7 @@ struct berlin_pinctrl_function {
> > #define BERLIN_PINCTRL_FUNCTION_UNKNOWN {}
> >
> > int berlin_pinctrl_probe(struct platform_device *pdev,
> > + struct regmap *regmap,
> > const struct berlin_pinctrl_desc *desc);
> >
> > #endif /* __PINCTRL_BERLIN_H */
> > --
> > 2.5.3
> >
>
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