diff mbox series

[V4,3/5] device property: Introduce a common API to fetch device match data

Message ID 1512096776-22883-4-git-send-email-okaya@codeaurora.org
State Not Applicable
Headers show
Series dmaengine: qcom_hidma: add support for bugfixed HW | expand

Commit Message

Sinan Kaya Dec. 1, 2017, 2:52 a.m. UTC
There is an OF/ACPI function to obtain the driver data. We want to hide
OF/ACPI details from the device drivers and abstract following the device
family of functions.

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
---
 drivers/base/property.c  | 14 ++++++++++++++
 include/linux/property.h |  2 ++
 2 files changed, 16 insertions(+)

Comments

Sakari Ailus Dec. 1, 2017, 9:13 a.m. UTC | #1
Hi Sinan,

Thanks for the patch.

On Thu, Nov 30, 2017 at 09:52:54PM -0500, Sinan Kaya wrote:
> There is an OF/ACPI function to obtain the driver data. We want to hide
> OF/ACPI details from the device drivers and abstract following the device
> family of functions.
> 
> Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
> ---
>  drivers/base/property.c  | 14 ++++++++++++++
>  include/linux/property.h |  2 ++
>  2 files changed, 16 insertions(+)
> 
> diff --git a/drivers/base/property.c b/drivers/base/property.c
> index 7ed99c1..6adec89 100644
> --- a/drivers/base/property.c
> +++ b/drivers/base/property.c
> @@ -15,6 +15,7 @@
>  #include <linux/kernel.h>
>  #include <linux/of.h>
>  #include <linux/of_address.h>
> +#include <linux/of_device.h>
>  #include <linux/of_graph.h>
>  #include <linux/property.h>
>  #include <linux/etherdevice.h>
> @@ -1335,3 +1336,16 @@ int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
>  	return fwnode_call_int_op(fwnode, graph_parse_endpoint, endpoint);
>  }
>  EXPORT_SYMBOL(fwnode_graph_parse_endpoint);
> +
> +void *device_get_match_data(struct device *dev)
> +{
> +	void *ret;
> +
> +	if (IS_ENABLED(CONFIG_OF) && dev->of_node)

Most of the dev->of_node checks have been removed from property.c and
replaced by calls to the firmware specific fwnode operations. What remains
should probably be moved there, too (apart from dev_fwnode).

How about adding a new op for this one to struct fwnode_operations in
include/linux/fwnode.h?

> +		ret = (void *)of_device_get_match_data(dev);
> +	else
> +		ret = acpi_get_match_data(dev);
> +
> +	return ret;
> +}
> +EXPORT_SYMBOL_GPL(device_get_match_data);
> diff --git a/include/linux/property.h b/include/linux/property.h
> index 6bebee1..01fa55b 100644
> --- a/include/linux/property.h
> +++ b/include/linux/property.h
> @@ -275,6 +275,8 @@ int device_add_properties(struct device *dev,
>  
>  enum dev_dma_attr device_get_dma_attr(struct device *dev);
>  
> +void *device_get_match_data(struct device *dev);
> +
>  int device_get_phy_mode(struct device *dev);
>  
>  void *device_get_mac_address(struct device *dev, char *addr, int alen);
Sinan Kaya Dec. 1, 2017, 3:51 p.m. UTC | #2
On 12/1/2017 4:13 AM, Sakari Ailus wrote:
> Most of the dev->of_node checks have been removed from property.c and
> replaced by calls to the firmware specific fwnode operations. What remains
> should probably be moved there, too (apart from dev_fwnode).
> 
> How about adding a new op for this one to struct fwnode_operations in
> include/linux/fwnode.h?

Sure, let me look. I was following the get_dma function. Bad example I guess.
diff mbox series

Patch

diff --git a/drivers/base/property.c b/drivers/base/property.c
index 7ed99c1..6adec89 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -15,6 +15,7 @@ 
 #include <linux/kernel.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
+#include <linux/of_device.h>
 #include <linux/of_graph.h>
 #include <linux/property.h>
 #include <linux/etherdevice.h>
@@ -1335,3 +1336,16 @@  int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
 	return fwnode_call_int_op(fwnode, graph_parse_endpoint, endpoint);
 }
 EXPORT_SYMBOL(fwnode_graph_parse_endpoint);
+
+void *device_get_match_data(struct device *dev)
+{
+	void *ret;
+
+	if (IS_ENABLED(CONFIG_OF) && dev->of_node)
+		ret = (void *)of_device_get_match_data(dev);
+	else
+		ret = acpi_get_match_data(dev);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(device_get_match_data);
diff --git a/include/linux/property.h b/include/linux/property.h
index 6bebee1..01fa55b 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -275,6 +275,8 @@  int device_add_properties(struct device *dev,
 
 enum dev_dma_attr device_get_dma_attr(struct device *dev);
 
+void *device_get_match_data(struct device *dev);
+
 int device_get_phy_mode(struct device *dev);
 
 void *device_get_mac_address(struct device *dev, char *addr, int alen);