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[PATCH v5 4/4] i2c: allow specify device properties in i2c_board_info

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  [PATCH v5 4/4] i2c: allow specify device properties in i2c_board_info Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2017-02-03 02:50 +0100
    Re: [PATCH v5 4/4] i2c: allow specify device properties in  i2c_board_info Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2017-02-03 12:50 +0100
    Re: [PATCH v5 4/4] i2c: allow specify device properties in i2c_board_info "Rafael J. Wysocki" <rafael@kernel.org> - 2017-02-07 13:50 +0100
    Re: [PATCH v5 4/4] i2c: allow specify device properties in  i2c_board_info Wolfram Sang <wsa@the-dreams.de> - 2017-02-07 14:30 +0100

#1572844 — [PATCH v5 4/4] i2c: allow specify device properties in i2c_board_info

With many drivers converting to using generic device properties, it is
useful to provide array of device properties when instantiating new i2c
client via i2c_board_info and have them automatically added to the device
in question.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/i2c/i2c-core.c | 16 +++++++++++++++-
 include/linux/i2c.h    |  3 +++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index f009549f86a5..3897e78e5e9a 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -1335,15 +1335,29 @@ i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info)
 	client->dev.fwnode = info->fwnode;
 
 	i2c_dev_set_name(adap, client);
+
+	if (info->properties) {
+		status = device_add_properties(&client->dev, info->properties);
+		if (status) {
+			dev_err(&adap->dev,
+				"Failed to add properties to client %s: %d\n",
+				client->name, status);
+			goto out_err;
+		}
+	}
+
 	status = device_register(&client->dev);
 	if (status)
-		goto out_err;
+		goto out_free_props;
 
 	dev_dbg(&adap->dev, "client [%s] registered with bus id %s\n",
 		client->name, dev_name(&client->dev));
 
 	return client;
 
+out_free_props:
+	if (info->properties)
+		device_remove_properties(&client->dev);
 out_err:
 	dev_err(&adap->dev,
 		"Failed to register i2c client %s at 0x%02x (%d)\n",
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 4aa7d244b38a..ec8f866a5656 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -51,6 +51,7 @@ enum i2c_slave_event;
 typedef int (*i2c_slave_cb_t)(struct i2c_client *, enum i2c_slave_event, u8 *);
 
 struct module;
+struct property_entry;
 
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 /*
@@ -310,6 +311,7 @@ static inline int i2c_slave_event(struct i2c_client *client,
  * @archdata: copied into i2c_client.dev.archdata
  * @of_node: pointer to OpenFirmware device node
  * @fwnode: device node supplied by the platform firmware
+ * @properties: additional device properties for the device
  * @irq: stored in i2c_client.irq
  *
  * I2C doesn't actually support hardware probing, although controllers and
@@ -331,6 +333,7 @@ struct i2c_board_info {
 	struct dev_archdata	*archdata;
 	struct device_node *of_node;
 	struct fwnode_handle *fwnode;
+	const struct property_entry *properties;
 	int		irq;
 };
 
-- 
2.11.0.483.g087da7b7c-goog

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#1573041 — Re: [PATCH v5 4/4] i2c: allow specify device properties in i2c_board_info

On Thu, 2017-02-02 at 17:41 -0800, Dmitry Torokhov wrote:
> With many drivers converting to using generic device properties, it is
> useful to provide array of device properties when instantiating new
> i2c
> client via i2c_board_info and have them automatically added to the
> device
> in question.

FWIW:
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

> 
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> ---
>  drivers/i2c/i2c-core.c | 16 +++++++++++++++-
>  include/linux/i2c.h    |  3 +++
>  2 files changed, 18 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
> index f009549f86a5..3897e78e5e9a 100644
> --- a/drivers/i2c/i2c-core.c
> +++ b/drivers/i2c/i2c-core.c
> @@ -1335,15 +1335,29 @@ i2c_new_device(struct i2c_adapter *adap,
> struct i2c_board_info const *info)
>  	client->dev.fwnode = info->fwnode;
>  
>  	i2c_dev_set_name(adap, client);
> +
> +	if (info->properties) {
> +		status = device_add_properties(&client->dev, info-
> >properties);
> +		if (status) {
> +			dev_err(&adap->dev,
> +				"Failed to add properties to client
> %s: %d\n",
> +				client->name, status);
> +			goto out_err;
> +		}
> +	}
> +
>  	status = device_register(&client->dev);
>  	if (status)
> -		goto out_err;
> +		goto out_free_props;
>  
>  	dev_dbg(&adap->dev, "client [%s] registered with bus id
> %s\n",
>  		client->name, dev_name(&client->dev));
>  
>  	return client;
>  
> +out_free_props:
> +	if (info->properties)
> +		device_remove_properties(&client->dev);
>  out_err:
>  	dev_err(&adap->dev,
>  		"Failed to register i2c client %s at 0x%02x (%d)\n",
> diff --git a/include/linux/i2c.h b/include/linux/i2c.h
> index 4aa7d244b38a..ec8f866a5656 100644
> --- a/include/linux/i2c.h
> +++ b/include/linux/i2c.h
> @@ -51,6 +51,7 @@ enum i2c_slave_event;
>  typedef int (*i2c_slave_cb_t)(struct i2c_client *, enum
> i2c_slave_event, u8 *);
>  
>  struct module;
> +struct property_entry;
>  
>  #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
>  /*
> @@ -310,6 +311,7 @@ static inline int i2c_slave_event(struct
> i2c_client *client,
>   * @archdata: copied into i2c_client.dev.archdata
>   * @of_node: pointer to OpenFirmware device node
>   * @fwnode: device node supplied by the platform firmware
> + * @properties: additional device properties for the device
>   * @irq: stored in i2c_client.irq
>   *
>   * I2C doesn't actually support hardware probing, although
> controllers and
> @@ -331,6 +333,7 @@ struct i2c_board_info {
>  	struct dev_archdata	*archdata;
>  	struct device_node *of_node;
>  	struct fwnode_handle *fwnode;
> +	const struct property_entry *properties;
>  	int		irq;
>  };
>  

-- 
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy

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#1575639

On Fri, Feb 3, 2017 at 2:41 AM, Dmitry Torokhov
<dmitry.torokhov@gmail.com> wrote:
> With many drivers converting to using generic device properties, it is
> useful to provide array of device properties when instantiating new i2c
> client via i2c_board_info and have them automatically added to the device
> in question.
>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Hi Wolfram,

Any objections here?

> ---
>  drivers/i2c/i2c-core.c | 16 +++++++++++++++-
>  include/linux/i2c.h    |  3 +++
>  2 files changed, 18 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
> index f009549f86a5..3897e78e5e9a 100644
> --- a/drivers/i2c/i2c-core.c
> +++ b/drivers/i2c/i2c-core.c
> @@ -1335,15 +1335,29 @@ i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info)
>         client->dev.fwnode = info->fwnode;
>
>         i2c_dev_set_name(adap, client);
> +
> +       if (info->properties) {
> +               status = device_add_properties(&client->dev, info->properties);
> +               if (status) {
> +                       dev_err(&adap->dev,
> +                               "Failed to add properties to client %s: %d\n",
> +                               client->name, status);
> +                       goto out_err;
> +               }
> +       }
> +
>         status = device_register(&client->dev);
>         if (status)
> -               goto out_err;
> +               goto out_free_props;
>
>         dev_dbg(&adap->dev, "client [%s] registered with bus id %s\n",
>                 client->name, dev_name(&client->dev));
>
>         return client;
>
> +out_free_props:
> +       if (info->properties)
> +               device_remove_properties(&client->dev);
>  out_err:
>         dev_err(&adap->dev,
>                 "Failed to register i2c client %s at 0x%02x (%d)\n",
> diff --git a/include/linux/i2c.h b/include/linux/i2c.h
> index 4aa7d244b38a..ec8f866a5656 100644
> --- a/include/linux/i2c.h
> +++ b/include/linux/i2c.h
> @@ -51,6 +51,7 @@ enum i2c_slave_event;
>  typedef int (*i2c_slave_cb_t)(struct i2c_client *, enum i2c_slave_event, u8 *);
>
>  struct module;
> +struct property_entry;
>
>  #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
>  /*
> @@ -310,6 +311,7 @@ static inline int i2c_slave_event(struct i2c_client *client,
>   * @archdata: copied into i2c_client.dev.archdata
>   * @of_node: pointer to OpenFirmware device node
>   * @fwnode: device node supplied by the platform firmware
> + * @properties: additional device properties for the device
>   * @irq: stored in i2c_client.irq
>   *
>   * I2C doesn't actually support hardware probing, although controllers and
> @@ -331,6 +333,7 @@ struct i2c_board_info {
>         struct dev_archdata     *archdata;
>         struct device_node *of_node;
>         struct fwnode_handle *fwnode;
> +       const struct property_entry *properties;
>         int             irq;
>  };
>
> --

Thanks,
Rafael

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#1575744 — Re: [PATCH v5 4/4] i2c: allow specify device properties in i2c_board_info

[Multipart message — attachments visible in raw view] — view raw

On Thu, Feb 02, 2017 at 05:41:28PM -0800, Dmitry Torokhov wrote:
> With many drivers converting to using generic device properties, it is
> useful to provide array of device properties when instantiating new i2c
> client via i2c_board_info and have them automatically added to the device
> in question.
> 
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Acked-by: Wolfram Sang <wsa@the-dreams.de>

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