fpga: add attribute groups

Make it easy to add attributes to low level FPGA drivers the right
way.  Add attribute groups pointers to structures that are used when
registering a manager, bridge, or group.  When the low level driver
registers, set the device attribute group.  The attributes are
created in device_add.

Signed-off-by: Alan Tull <atull@kernel.org>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Tull 2017-11-15 14:20:28 -06:00 committed by Greg Kroah-Hartman
parent 84e93f1d4f
commit 845089bbf5
6 changed files with 9 additions and 0 deletions

View File

@ -367,6 +367,7 @@ int fpga_bridge_register(struct device *dev, const char *name,
bridge->priv = priv;
device_initialize(&bridge->dev);
bridge->dev.groups = br_ops->groups;
bridge->dev.class = fpga_bridge_class;
bridge->dev.parent = dev;
bridge->dev.of_node = dev->of_node;

View File

@ -569,6 +569,7 @@ int fpga_mgr_register(struct device *dev, const char *name,
device_initialize(&mgr->dev);
mgr->dev.class = fpga_mgr_class;
mgr->dev.groups = mops->groups;
mgr->dev.parent = dev;
mgr->dev.of_node = dev->of_node;
mgr->dev.id = id;

View File

@ -173,6 +173,7 @@ int fpga_region_register(struct device *dev, struct fpga_region *region)
mutex_init(&region->mutex);
INIT_LIST_HEAD(&region->bridge_list);
device_initialize(&region->dev);
region->dev.groups = region->groups;
region->dev.class = fpga_region_class;
region->dev.parent = dev;
region->dev.of_node = dev->of_node;

View File

@ -13,11 +13,13 @@ struct fpga_bridge;
* @enable_show: returns the FPGA bridge's status
* @enable_set: set a FPGA bridge as enabled or disabled
* @fpga_bridge_remove: set FPGA into a specific state during driver remove
* @groups: optional attribute groups.
*/
struct fpga_bridge_ops {
int (*enable_show)(struct fpga_bridge *bridge);
int (*enable_set)(struct fpga_bridge *bridge, bool enable);
void (*fpga_bridge_remove)(struct fpga_bridge *bridge);
const struct attribute_group **groups;
};
/**

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@ -115,6 +115,7 @@ struct fpga_image_info {
* @write_sg: write the scatter list of configuration data to the FPGA
* @write_complete: set FPGA to operating state after writing is done
* @fpga_remove: optional: Set FPGA into a specific state during driver remove
* @groups: optional attribute groups.
*
* fpga_manager_ops are the low level functions implemented by a specific
* fpga manager driver. The optional ones are tested for NULL before being
@ -131,6 +132,7 @@ struct fpga_manager_ops {
int (*write_complete)(struct fpga_manager *mgr,
struct fpga_image_info *info);
void (*fpga_remove)(struct fpga_manager *mgr);
const struct attribute_group **groups;
};
/**

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@ -14,6 +14,7 @@
* @info: FPGA image info
* @priv: private data
* @get_bridges: optional function to get bridges to a list
* @groups: optional attribute groups.
*/
struct fpga_region {
struct device dev;
@ -23,6 +24,7 @@ struct fpga_region {
struct fpga_image_info *info;
void *priv;
int (*get_bridges)(struct fpga_region *region);
const struct attribute_group **groups;
};
#define to_fpga_region(d) container_of(d, struct fpga_region, dev)