diff mbox

[1/3] mfd: wm831x: Add basic device tree binding

Message ID 1486734800-10141-1-git-send-email-ckeepax@opensource.wolfsonmicro.com
State New
Headers show

Commit Message

Charles Keepax Feb. 10, 2017, 1:53 p.m. UTC
Add the basic ability to register the device through device tree, more
work is needed to get each individual sub-driver functioning correctly
but this is enough to get the device to probe from device tree.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
---
 MAINTAINERS                     |  1 +
 drivers/mfd/wm831x-core.c       | 32 +++++++++++++++++++++++++++++++-
 drivers/mfd/wm831x-i2c.c        |  9 ++++++++-
 drivers/mfd/wm831x-irq.c        |  6 +++---
 drivers/mfd/wm831x-spi.c        |  6 +++++-
 include/linux/mfd/wm831x/core.h | 15 +++++++++++++++
 6 files changed, 63 insertions(+), 6 deletions(-)

Comments

kernel test robot Feb. 10, 2017, 9:32 p.m. UTC | #1
Hi Charles,

[auto build test WARNING on ljones-mfd/for-mfd-next]
[also build test WARNING on v4.10-rc7 next-20170210]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Charles-Keepax/mfd-wm831x-Add-basic-device-tree-binding/20170211-024222
base:   https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 6.2.0
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=ia64 

All warnings (new ones prefixed by >>):

   drivers/mfd/wm831x-core.c: In function 'wm831x_of_get_type':
>> drivers/mfd/wm831x-core.c:1636:10: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
      return (int)id->data;
             ^

vim +1636 drivers/mfd/wm831x-core.c

  1620		{ .compatible = "wlf,wm8310", .data = (void *)WM8310 },
  1621		{ .compatible = "wlf,wm8311", .data = (void *)WM8311 },
  1622		{ .compatible = "wlf,wm8312", .data = (void *)WM8312 },
  1623		{ .compatible = "wlf,wm8320", .data = (void *)WM8320 },
  1624		{ .compatible = "wlf,wm8321", .data = (void *)WM8321 },
  1625		{ .compatible = "wlf,wm8325", .data = (void *)WM8325 },
  1626		{ .compatible = "wlf,wm8326", .data = (void *)WM8326 },
  1627		{ },
  1628	};
  1629	EXPORT_SYMBOL_GPL(wm831x_of_match);
  1630	
  1631	int wm831x_of_get_type(struct device *dev)
  1632	{
  1633		const struct of_device_id *id = of_match_device(wm831x_of_match, dev);
  1634	
  1635		if (id)
> 1636			return (int)id->data;
  1637		else
  1638			return 0;
  1639	}
  1640	EXPORT_SYMBOL_GPL(wm831x_of_get_type);
  1641	#endif
  1642	
  1643	/*
  1644	 * Instantiate the generic non-control parts of the device.

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
Lee Jones Feb. 13, 2017, 9:16 a.m. UTC | #2
On Fri, 10 Feb 2017, Charles Keepax wrote:

> Add the basic ability to register the device through device tree, more
> work is needed to get each individual sub-driver functioning correctly
> but this is enough to get the device to probe from device tree.
> 
> Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
> ---
>  MAINTAINERS                     |  1 +

Irrelevant change.

Either submit it with patch that introduces the file or on its own.

>  drivers/mfd/wm831x-core.c       | 32 +++++++++++++++++++++++++++++++-
>  drivers/mfd/wm831x-i2c.c        |  9 ++++++++-
>  drivers/mfd/wm831x-irq.c        |  6 +++---
>  drivers/mfd/wm831x-spi.c        |  6 +++++-
>  include/linux/mfd/wm831x/core.h | 15 +++++++++++++++
>  6 files changed, 63 insertions(+), 6 deletions(-)
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 2d8ca28..48fdc82 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -13363,6 +13363,7 @@ F:	Documentation/hwmon/wm83??
>  F:	Documentation/devicetree/bindings/extcon/extcon-arizona.txt
>  F:	Documentation/devicetree/bindings/regulator/arizona-regulator.txt
>  F:	Documentation/devicetree/bindings/mfd/arizona.txt
> +F:	Documentation/devicetree/bindings/mfd/wm831x.txt
>  F:	arch/arm/mach-s3c64xx/mach-crag6410*
>  F:	drivers/clk/clk-wm83*.c
>  F:	drivers/extcon/extcon-arizona.c
> diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c
> index 3e0e99e..57ff456 100644
> --- a/drivers/mfd/wm831x-core.c
> +++ b/drivers/mfd/wm831x-core.c
> @@ -19,6 +19,8 @@
>  #include <linux/mfd/core.h>
>  #include <linux/slab.h>
>  #include <linux/err.h>
> +#include <linux/of.h>
> +#include <linux/of_device.h>
>  
>  #include <linux/mfd/wm831x/core.h>
>  #include <linux/mfd/wm831x/pdata.h>
> @@ -1613,6 +1615,31 @@ struct regmap_config wm831x_regmap_config = {
>  };
>  EXPORT_SYMBOL_GPL(wm831x_regmap_config);
>  
> +#ifdef CONFIG_OF
> +const struct of_device_id wm831x_of_match[] = {
> +	{ .compatible = "wlf,wm8310", .data = (void *)WM8310 },
> +	{ .compatible = "wlf,wm8311", .data = (void *)WM8311 },
> +	{ .compatible = "wlf,wm8312", .data = (void *)WM8312 },
> +	{ .compatible = "wlf,wm8320", .data = (void *)WM8320 },
> +	{ .compatible = "wlf,wm8321", .data = (void *)WM8321 },
> +	{ .compatible = "wlf,wm8325", .data = (void *)WM8325 },
> +	{ .compatible = "wlf,wm8326", .data = (void *)WM8326 },
> +	{ },
> +};
> +EXPORT_SYMBOL_GPL(wm831x_of_match);
> +
> +int wm831x_of_get_type(struct device *dev)
> +{
> +	const struct of_device_id *id = of_match_device(wm831x_of_match, dev);
> +
> +	if (id)
> +		return (int)id->data;

I've seen a warning about this.

Please fix.

[...]
Charles Keepax Feb. 13, 2017, 9:19 a.m. UTC | #3
On Mon, Feb 13, 2017 at 09:16:03AM +0000, Lee Jones wrote:
> On Fri, 10 Feb 2017, Charles Keepax wrote:
> 
> > Add the basic ability to register the device through device tree, more
> > work is needed to get each individual sub-driver functioning correctly
> > but this is enough to get the device to probe from device tree.
> > 
> > Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
> > ---
> >  MAINTAINERS                     |  1 +
> 
> Irrelevant change.
> 
> Either submit it with patch that introduces the file or on its own.
> 

Cool I will move it into the binding patch, also will fix up that
warning from the build bot for v2 as well.

Thanks,
Charles
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diff mbox

Patch

diff --git a/MAINTAINERS b/MAINTAINERS
index 2d8ca28..48fdc82 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13363,6 +13363,7 @@  F:	Documentation/hwmon/wm83??
 F:	Documentation/devicetree/bindings/extcon/extcon-arizona.txt
 F:	Documentation/devicetree/bindings/regulator/arizona-regulator.txt
 F:	Documentation/devicetree/bindings/mfd/arizona.txt
+F:	Documentation/devicetree/bindings/mfd/wm831x.txt
 F:	arch/arm/mach-s3c64xx/mach-crag6410*
 F:	drivers/clk/clk-wm83*.c
 F:	drivers/extcon/extcon-arizona.c
diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c
index 3e0e99e..57ff456 100644
--- a/drivers/mfd/wm831x-core.c
+++ b/drivers/mfd/wm831x-core.c
@@ -19,6 +19,8 @@ 
 #include <linux/mfd/core.h>
 #include <linux/slab.h>
 #include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
 
 #include <linux/mfd/wm831x/core.h>
 #include <linux/mfd/wm831x/pdata.h>
@@ -1613,6 +1615,31 @@  struct regmap_config wm831x_regmap_config = {
 };
 EXPORT_SYMBOL_GPL(wm831x_regmap_config);
 
+#ifdef CONFIG_OF
+const struct of_device_id wm831x_of_match[] = {
+	{ .compatible = "wlf,wm8310", .data = (void *)WM8310 },
+	{ .compatible = "wlf,wm8311", .data = (void *)WM8311 },
+	{ .compatible = "wlf,wm8312", .data = (void *)WM8312 },
+	{ .compatible = "wlf,wm8320", .data = (void *)WM8320 },
+	{ .compatible = "wlf,wm8321", .data = (void *)WM8321 },
+	{ .compatible = "wlf,wm8325", .data = (void *)WM8325 },
+	{ .compatible = "wlf,wm8326", .data = (void *)WM8326 },
+	{ },
+};
+EXPORT_SYMBOL_GPL(wm831x_of_match);
+
+int wm831x_of_get_type(struct device *dev)
+{
+	const struct of_device_id *id = of_match_device(wm831x_of_match, dev);
+
+	if (id)
+		return (int)id->data;
+	else
+		return 0;
+}
+EXPORT_SYMBOL_GPL(wm831x_of_get_type);
+#endif
+
 /*
  * Instantiate the generic non-control parts of the device.
  */
@@ -1628,7 +1655,10 @@  int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
 	dev_set_drvdata(wm831x->dev, wm831x);
 
 	if (pdata)
-		wm831x->soft_shutdown = pdata->soft_shutdown;
+		memcpy(&wm831x->pdata, pdata, sizeof(*pdata));
+	pdata = &wm831x->pdata;
+
+	wm831x->soft_shutdown = pdata->soft_shutdown;
 
 	ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID);
 	if (ret < 0) {
diff --git a/drivers/mfd/wm831x-i2c.c b/drivers/mfd/wm831x-i2c.c
index 824bcba..b2acd92 100644
--- a/drivers/mfd/wm831x-i2c.c
+++ b/drivers/mfd/wm831x-i2c.c
@@ -28,8 +28,14 @@  static int wm831x_i2c_probe(struct i2c_client *i2c,
 			    const struct i2c_device_id *id)
 {
 	struct wm831x *wm831x;
+	enum wm831x_parent type;
 	int ret;
 
+	if (i2c->dev.of_node)
+		type = (enum wm831x_parent)wm831x_of_get_type(&i2c->dev);
+	else
+		type = (enum wm831x_parent)id->driver_data;
+
 	wm831x = devm_kzalloc(&i2c->dev, sizeof(struct wm831x), GFP_KERNEL);
 	if (wm831x == NULL)
 		return -ENOMEM;
@@ -45,7 +51,7 @@  static int wm831x_i2c_probe(struct i2c_client *i2c,
 		return ret;
 	}
 
-	return wm831x_device_init(wm831x, id->driver_data, i2c->irq);
+	return wm831x_device_init(wm831x, type, i2c->irq);
 }
 
 static int wm831x_i2c_remove(struct i2c_client *i2c)
@@ -94,6 +100,7 @@  static struct i2c_driver wm831x_i2c_driver = {
 	.driver = {
 		.name = "wm831x",
 		.pm = &wm831x_pm_ops,
+		.of_match_table = of_match_ptr(wm831x_of_match),
 	},
 	.probe = wm831x_i2c_probe,
 	.remove = wm831x_i2c_remove,
diff --git a/drivers/mfd/wm831x-irq.c b/drivers/mfd/wm831x-irq.c
index dfea8b9..c01239a 100644
--- a/drivers/mfd/wm831x-irq.c
+++ b/drivers/mfd/wm831x-irq.c
@@ -564,7 +564,7 @@  static const struct irq_domain_ops wm831x_irq_domain_ops = {
 
 int wm831x_irq_init(struct wm831x *wm831x, int irq)
 {
-	struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
+	struct wm831x_pdata *pdata = &wm831x->pdata;
 	struct irq_domain *domain;
 	int i, ret, irq_base;
 
@@ -579,7 +579,7 @@  int wm831x_irq_init(struct wm831x *wm831x, int irq)
 	}
 
 	/* Try to dynamically allocate IRQs if no base is specified */
-	if (pdata && pdata->irq_base) {
+	if (pdata->irq_base) {
 		irq_base = irq_alloc_descs(pdata->irq_base, 0,
 					   WM831X_NUM_IRQS, 0);
 		if (irq_base < 0) {
@@ -608,7 +608,7 @@  int wm831x_irq_init(struct wm831x *wm831x, int irq)
 		return -EINVAL;
 	}
 
-	if (pdata && pdata->irq_cmos)
+	if (pdata->irq_cmos)
 		i = 0;
 	else
 		i = WM831X_IRQ_OD;
diff --git a/drivers/mfd/wm831x-spi.c b/drivers/mfd/wm831x-spi.c
index 80482ae..44c6eec 100644
--- a/drivers/mfd/wm831x-spi.c
+++ b/drivers/mfd/wm831x-spi.c
@@ -28,7 +28,10 @@  static int wm831x_spi_probe(struct spi_device *spi)
 	enum wm831x_parent type;
 	int ret;
 
-	type = (enum wm831x_parent)id->driver_data;
+	if (spi->dev.of_node)
+		type = (enum wm831x_parent)wm831x_of_get_type(&spi->dev);
+	else
+		type = (enum wm831x_parent)id->driver_data;
 
 	wm831x = devm_kzalloc(&spi->dev, sizeof(struct wm831x), GFP_KERNEL);
 	if (wm831x == NULL)
@@ -97,6 +100,7 @@  static struct spi_driver wm831x_spi_driver = {
 	.driver = {
 		.name	= "wm831x",
 		.pm	= &wm831x_spi_pm,
+		.of_match_table = of_match_ptr(wm831x_of_match),
 	},
 	.id_table	= wm831x_spi_ids,
 	.probe		= wm831x_spi_probe,
diff --git a/include/linux/mfd/wm831x/core.h b/include/linux/mfd/wm831x/core.h
index 76c2264..752a722 100644
--- a/include/linux/mfd/wm831x/core.h
+++ b/include/linux/mfd/wm831x/core.h
@@ -21,6 +21,8 @@ 
 #include <linux/list.h>
 #include <linux/regmap.h>
 #include <linux/mfd/wm831x/auxadc.h>
+#include <linux/mfd/wm831x/pdata.h>
+#include <linux/of.h>
 
 /*
  * Register values.
@@ -367,6 +369,8 @@  struct wm831x {
 
 	struct regmap *regmap;
 
+	struct wm831x_pdata pdata;
+
 	int irq;  /* Our chip IRQ */
 	struct mutex irq_lock;
 	struct irq_domain *irq_domain;
@@ -427,4 +431,15 @@  static inline int wm831x_irq(struct wm831x *wm831x, int irq)
 
 extern struct regmap_config wm831x_regmap_config;
 
+extern const struct of_device_id wm831x_of_match[];
+
+#ifdef CONFIG_OF
+int wm831x_of_get_type(struct device *dev);
+#else
+static inline int wm831x_of_get_type(struct device *dev)
+{
+	return 0;
+}
+#endif
+
 #endif