Hi Jisheng, Thanks for providing this! 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? Antoine > Signed-off-by: Jisheng Zhang <jszhang@xxxxxxxxxxx> > --- > 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 > -- Antoine Ténart, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html