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Subject[PATCH v4 12/18] fpga: region: rename some functions prior to moving
Date
Rename some functions that will be moved to
of-fpga-region.c. Also change some parameters
and export a function to help with refactoring.

This is a step towards the larger goal of separating
device tree support from FPGA region common code.

* fpga_region_get_manager -> of_fpga_region_get_mgr

* add 'of_' prefix to the following:
* fpga_region_find
* fpga_region_get_bridges
* fpga_region_notify_pre_apply
* fpga_region_notify_post_remove),
* fpga_region_probe/remove

Parameter changes:
* of_fpga_region_find
change parameter to be the device node of the region.
* of_fpga_region_get_bridges
change second parameter to FPGA image info.

Export of_fpga_region_find as well.

Signed-off-by: Alan Tull <atull@kernel.org>
---
v2: split out from another patch
v3: no changes in patch for this version of patchset
v4: no change to this patch in this version of patchset
---
drivers/fpga/fpga-region.c | 60 ++++++++++++++++++++++++----------------------
1 file changed, 31 insertions(+), 29 deletions(-)

diff --git a/drivers/fpga/fpga-region.c b/drivers/fpga/fpga-region.c
index 402d0b6..92ab216 100644
--- a/drivers/fpga/fpga-region.c
+++ b/drivers/fpga/fpga-region.c
@@ -42,12 +42,14 @@ static int fpga_region_of_node_match(struct device *dev, const void *data)
}

/**
- * fpga_region_find - find FPGA region
+ * of_fpga_region_find - find FPGA region
* @np: device node of FPGA Region
+ *
* Caller will need to put_device(&region->dev) when done.
+ *
* Returns FPGA Region struct or NULL
*/
-static struct fpga_region *fpga_region_find(struct device_node *np)
+static struct fpga_region *of_fpga_region_find(struct device_node *np)
{
struct device *dev;

@@ -107,7 +109,7 @@ static void fpga_region_put(struct fpga_region *region)
}

/**
- * fpga_region_get_manager - get reference for FPGA manager
+ * of_fpga_region_get_mgr - get reference for FPGA manager
* @np: device node of FPGA region
*
* Get FPGA Manager from "fpga-mgr" property or from ancestor region.
@@ -116,7 +118,7 @@ static void fpga_region_put(struct fpga_region *region)
*
* Return: fpga manager struct or IS_ERR() condition containing error code.
*/
-static struct fpga_manager *fpga_region_get_manager(struct device_node *np)
+static struct fpga_manager *of_fpga_region_get_mgr(struct device_node *np)
{
struct device_node *mgr_node;
struct fpga_manager *mgr;
@@ -139,9 +141,9 @@ static struct fpga_manager *fpga_region_get_manager(struct device_node *np)
}

/**
- * fpga_region_get_bridges - create a list of bridges
+ * of_fpga_region_get_bridges - create a list of bridges
* @region: FPGA region
- * @overlay: device node of the overlay
+ * @info: FPGA image info
*
* Create a list of bridges including the parent bridge and the bridges
* specified by "fpga-bridges" property. Note that the
@@ -154,8 +156,8 @@ static struct fpga_manager *fpga_region_get_manager(struct device_node *np)
* Return 0 for success (even if there are no bridges specified)
* or -EBUSY if any of the bridges are in use.
*/
-static int fpga_region_get_bridges(struct fpga_region *region,
- struct device_node *overlay)
+static int of_fpga_region_get_bridges(struct fpga_region *region,
+ struct fpga_image_info *info)
{
struct device *dev = &region->dev;
struct device_node *region_np = dev->of_node;
@@ -163,7 +165,7 @@ static int fpga_region_get_bridges(struct fpga_region *region,
int i, ret;

/* If parent is a bridge, add to list */
- ret = of_fpga_bridge_get_to_list(region_np->parent, region->info,
+ ret = of_fpga_bridge_get_to_list(region_np->parent, info,
&region->bridge_list);

/* -EBUSY means parent is a bridge that is under use. Give up. */
@@ -175,8 +177,8 @@ static int fpga_region_get_bridges(struct fpga_region *region,
parent_br = region_np->parent;

/* If overlay has a list of bridges, use it. */
- if (of_parse_phandle(overlay, "fpga-bridges", 0))
- np = overlay;
+ if (of_parse_phandle(info->overlay, "fpga-bridges", 0))
+ np = info->overlay;
else
np = region_np;

@@ -227,7 +229,7 @@ int fpga_region_program_fpga(struct fpga_region *region)
goto err_put_region;
}

- ret = fpga_region_get_bridges(region, info->overlay);
+ ret = of_fpga_region_get_bridges(region, info);
if (ret) {
dev_err(dev, "failed to get FPGA bridges\n");
goto err_unlock_mgr;
@@ -397,7 +399,7 @@ static struct fpga_image_info *of_fpga_region_parse_ov(
}

/**
- * fpga_region_notify_pre_apply - pre-apply overlay notification
+ * of_fpga_region_notify_pre_apply - pre-apply overlay notification
*
* @region: FPGA region that the overlay was applied to
* @nd: overlay notification data
@@ -410,8 +412,8 @@ static struct fpga_image_info *of_fpga_region_parse_ov(
*
* Returns 0 for success or negative error code for failure.
*/
-static int fpga_region_notify_pre_apply(struct fpga_region *region,
- struct of_overlay_notify_data *nd)
+static int of_fpga_region_notify_pre_apply(struct fpga_region *region,
+ struct of_overlay_notify_data *nd)
{
struct device *dev = &region->dev;
struct fpga_image_info *info;
@@ -441,7 +443,7 @@ static int fpga_region_notify_pre_apply(struct fpga_region *region,
}

/**
- * fpga_region_notify_post_remove - post-remove overlay notification
+ * of_fpga_region_notify_post_remove - post-remove overlay notification
*
* @region: FPGA region that was targeted by the overlay that was removed
* @nd: overlay notification data
@@ -449,8 +451,8 @@ static int fpga_region_notify_pre_apply(struct fpga_region *region,
* Called after an overlay has been removed if the overlay's target was a
* FPGA region.
*/
-static void fpga_region_notify_post_remove(struct fpga_region *region,
- struct of_overlay_notify_data *nd)
+static void of_fpga_region_notify_post_remove(struct fpga_region *region,
+ struct of_overlay_notify_data *nd)
{
fpga_bridges_disable(&region->bridge_list);
fpga_bridges_put(&region->bridge_list);
@@ -493,18 +495,18 @@ static int of_fpga_region_notify(struct notifier_block *nb,
return NOTIFY_OK;
}

- region = fpga_region_find(nd->target);
+ region = of_fpga_region_find(nd->target);
if (!region)
return NOTIFY_OK;

ret = 0;
switch (action) {
case OF_OVERLAY_PRE_APPLY:
- ret = fpga_region_notify_pre_apply(region, nd);
+ ret = of_fpga_region_notify_pre_apply(region, nd);
break;

case OF_OVERLAY_POST_REMOVE:
- fpga_region_notify_post_remove(region, nd);
+ of_fpga_region_notify_post_remove(region, nd);
break;
}

@@ -520,7 +522,7 @@ static struct notifier_block fpga_region_of_nb = {
.notifier_call = of_fpga_region_notify,
};

-static int fpga_region_probe(struct platform_device *pdev)
+static int of_fpga_region_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
@@ -528,7 +530,7 @@ static int fpga_region_probe(struct platform_device *pdev)
struct fpga_manager *mgr;
int id, ret = 0;

- mgr = fpga_region_get_manager(np);
+ mgr = of_fpga_region_get_mgr(np);
if (IS_ERR(mgr))
return -EPROBE_DEFER;

@@ -580,7 +582,7 @@ static int fpga_region_probe(struct platform_device *pdev)
return ret;
}

-static int fpga_region_remove(struct platform_device *pdev)
+static int of_fpga_region_remove(struct platform_device *pdev)
{
struct fpga_region *region = platform_get_drvdata(pdev);

@@ -590,9 +592,9 @@ static int fpga_region_remove(struct platform_device *pdev)
return 0;
}

-static struct platform_driver fpga_region_driver = {
- .probe = fpga_region_probe,
- .remove = fpga_region_remove,
+static struct platform_driver of_fpga_region_driver = {
+ .probe = of_fpga_region_probe,
+ .remove = of_fpga_region_remove,
.driver = {
.name = "fpga-region",
.of_match_table = of_match_ptr(fpga_region_of_match),
@@ -625,7 +627,7 @@ static int __init fpga_region_init(void)
if (ret)
goto err_class;

- ret = platform_driver_register(&fpga_region_driver);
+ ret = platform_driver_register(&of_fpga_region_driver);
if (ret)
goto err_plat;

@@ -641,7 +643,7 @@ static int __init fpga_region_init(void)

static void __exit fpga_region_exit(void)
{
- platform_driver_unregister(&fpga_region_driver);
+ platform_driver_unregister(&of_fpga_region_driver);
of_overlay_notifier_unregister(&fpga_region_of_nb);
class_destroy(fpga_region_class);
ida_destroy(&fpga_region_ida);
--
2.7.4
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