dt: xilinx_hwicap: merge platform and of_platform driver bindings
of_platform_driver is getting removed, and a single platform_driver
can now support both devicetree and non-devicetree use cases. This
patch merges the two driver registrations.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
diff --git a/drivers/char/xilinx_hwicap/xilinx_hwicap.c b/drivers/char/xilinx_hwicap/xilinx_hwicap.c
index 9f2272e..d3c9d75 100644
--- a/drivers/char/xilinx_hwicap/xilinx_hwicap.c
+++ b/drivers/char/xilinx_hwicap/xilinx_hwicap.c
@@ -714,12 +714,58 @@
return 0; /* success */
}
+#ifdef CONFIG_OF
+static int __devinit hwicap_of_probe(struct platform_device *op)
+{
+ struct resource res;
+ const unsigned int *id;
+ const char *family;
+ int rc;
+ const struct hwicap_driver_config *config = op->dev.of_match->data;
+ const struct config_registers *regs;
+
+
+ rc = of_address_to_resource(op->dev.of_node, 0, &res);
+ if (rc) {
+ dev_err(&op->dev, "invalid address\n");
+ return rc;
+ }
+
+ id = of_get_property(op->dev.of_node, "port-number", NULL);
+
+ /* It's most likely that we're using V4, if the family is not
+ specified */
+ regs = &v4_config_registers;
+ family = of_get_property(op->dev.of_node, "xlnx,family", NULL);
+
+ if (family) {
+ if (!strcmp(family, "virtex2p")) {
+ regs = &v2_config_registers;
+ } else if (!strcmp(family, "virtex4")) {
+ regs = &v4_config_registers;
+ } else if (!strcmp(family, "virtex5")) {
+ regs = &v5_config_registers;
+ }
+ }
+ return hwicap_setup(&op->dev, id ? *id : -1, &res, config,
+ regs);
+}
+#else
+static inline int hwicap_of_probe(struct platform_device *op)
+{
+ return -EINVAL;
+}
+#endif /* CONFIG_OF */
+
static int __devinit hwicap_drv_probe(struct platform_device *pdev)
{
struct resource *res;
const struct config_registers *regs;
const char *family;
+ if (pdev->dev.of_match)
+ return hwicap_of_probe(pdev);
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -ENODEV;
@@ -748,98 +794,28 @@
return hwicap_remove(&pdev->dev);
}
-static struct platform_driver hwicap_platform_driver = {
- .probe = hwicap_drv_probe,
- .remove = hwicap_drv_remove,
- .driver = {
- .owner = THIS_MODULE,
- .name = DRIVER_NAME,
- },
-};
-
-/* ---------------------------------------------------------------------
- * OF bus binding
- */
-
-#if defined(CONFIG_OF)
-static int __devinit
-hwicap_of_probe(struct platform_device *op, const struct of_device_id *match)
-{
- struct resource res;
- const unsigned int *id;
- const char *family;
- int rc;
- const struct hwicap_driver_config *config = match->data;
- const struct config_registers *regs;
-
- dev_dbg(&op->dev, "hwicap_of_probe(%p, %p)\n", op, match);
-
- rc = of_address_to_resource(op->dev.of_node, 0, &res);
- if (rc) {
- dev_err(&op->dev, "invalid address\n");
- return rc;
- }
-
- id = of_get_property(op->dev.of_node, "port-number", NULL);
-
- /* It's most likely that we're using V4, if the family is not
- specified */
- regs = &v4_config_registers;
- family = of_get_property(op->dev.of_node, "xlnx,family", NULL);
-
- if (family) {
- if (!strcmp(family, "virtex2p")) {
- regs = &v2_config_registers;
- } else if (!strcmp(family, "virtex4")) {
- regs = &v4_config_registers;
- } else if (!strcmp(family, "virtex5")) {
- regs = &v5_config_registers;
- }
- }
- return hwicap_setup(&op->dev, id ? *id : -1, &res, config,
- regs);
-}
-
-static int __devexit hwicap_of_remove(struct platform_device *op)
-{
- return hwicap_remove(&op->dev);
-}
-
-/* Match table for of_platform binding */
+#ifdef CONFIG_OF
+/* Match table for device tree binding */
static const struct of_device_id __devinitconst hwicap_of_match[] = {
{ .compatible = "xlnx,opb-hwicap-1.00.b", .data = &buffer_icap_config},
{ .compatible = "xlnx,xps-hwicap-1.00.a", .data = &fifo_icap_config},
{},
};
MODULE_DEVICE_TABLE(of, hwicap_of_match);
+#else
+#define hwicap_of_match NULL
+#endif
-static struct of_platform_driver hwicap_of_driver = {
- .probe = hwicap_of_probe,
- .remove = __devexit_p(hwicap_of_remove),
+static struct platform_driver hwicap_platform_driver = {
+ .probe = hwicap_drv_probe,
+ .remove = hwicap_drv_remove,
.driver = {
- .name = DRIVER_NAME,
.owner = THIS_MODULE,
+ .name = DRIVER_NAME,
.of_match_table = hwicap_of_match,
},
};
-/* Registration helpers to keep the number of #ifdefs to a minimum */
-static inline int __init hwicap_of_register(void)
-{
- pr_debug("hwicap: calling of_register_platform_driver()\n");
- return of_register_platform_driver(&hwicap_of_driver);
-}
-
-static inline void __exit hwicap_of_unregister(void)
-{
- of_unregister_platform_driver(&hwicap_of_driver);
-}
-#else /* CONFIG_OF */
-/* CONFIG_OF not enabled; do nothing helpers */
-static inline int __init hwicap_of_register(void) { return 0; }
-static inline void __exit hwicap_of_unregister(void) { }
-#endif /* CONFIG_OF */
-
static int __init hwicap_module_init(void)
{
dev_t devt;
@@ -856,21 +832,12 @@
return retval;
retval = platform_driver_register(&hwicap_platform_driver);
-
if (retval)
- goto failed1;
-
- retval = hwicap_of_register();
-
- if (retval)
- goto failed2;
+ goto failed;
return retval;
- failed2:
- platform_driver_unregister(&hwicap_platform_driver);
-
- failed1:
+ failed:
unregister_chrdev_region(devt, HWICAP_DEVICES);
return retval;
@@ -884,8 +851,6 @@
platform_driver_unregister(&hwicap_platform_driver);
- hwicap_of_unregister();
-
unregister_chrdev_region(devt, HWICAP_DEVICES);
}