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Sysace: Add of_platform_bus binding

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The of_platform bus binding is needed to make the device driver usable
under arch/powerpc.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Grant Likely 2007-10-01 16:33:55 +02:00 • committed by Jens Axboe
parent 32f6fff47d
commit 95e896c35f
1 changed files with 89 additions and 0 deletions
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89
drivers/block/xsysace.c
View file

@ -91,6 +91,10 @@
#include <linux/blkdev.h>
#include <linux/hdreg.h>
#include <linux/platform_device.h>
#if defined(CONFIG_OF)
#include <linux/of_device.h>
#include <linux/of_platform.h>
#endif
MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
MODULE_DESCRIPTION("Xilinx SystemACE device driver");
@ -1157,6 +1161,85 @@ static struct platform_driver ace_platform_driver = {
},
};
/* ---------------------------------------------------------------------
* OF_Platform Bus Support
*/
#if defined(CONFIG_OF)
static int __devinit
ace_of_probe(struct of_device *op, const struct of_device_id *match)
{
struct resource res;
unsigned long physaddr;
const u32 *id;
int irq, bus_width, rc;
dev_dbg(&op->dev, "ace_of_probe(%p, %p)\n", op, match);
/* device id */
id = of_get_property(op->node, "port-number", NULL);
/* physaddr */
rc = of_address_to_resource(op->node, 0, &res);
if (rc) {
dev_err(&op->dev, "invalid address\n");
return rc;
}
physaddr = res.start;
/* irq */
irq = irq_of_parse_and_map(op->node, 0);
/* bus width */
bus_width = ACE_BUS_WIDTH_16;
if (of_find_property(op->node, "8-bit", NULL))
bus_width = ACE_BUS_WIDTH_8;
/* Call the bus-independant setup code */
return ace_alloc(&op->dev, id ? *id : 0, physaddr, irq, bus_width);
}
static int __devexit ace_of_remove(struct of_device *op)
{
ace_free(&op->dev);
return 0;
}
/* Match table for of_platform binding */
static struct of_device_id __devinit ace_of_match[] = {
{ .compatible = "xilinx,xsysace", },
{},
};
MODULE_DEVICE_TABLE(of, ace_of_match);
static struct of_platform_driver ace_of_driver = {
.owner = THIS_MODULE,
.name = "xsysace",
.match_table = ace_of_match,
.probe = ace_of_probe,
.remove = __devexit_p(ace_of_remove),
.driver = {
.name = "xsysace",
},
};
/* Registration helpers to keep the number of #ifdefs to a minimum */
static inline int __init ace_of_register(void)
{
pr_debug("xsysace: registering OF binding\n");
return of_register_platform_driver(&ace_of_driver);
}
static inline void __exit ace_of_unregister(void)
{
of_unregister_platform_driver(&ace_of_driver);
}
#else /* CONFIG_OF */
/* CONFIG_OF not enabled; do nothing helpers */
static inline int __init ace_of_register(void) { return 0; }
static inline void __exit ace_of_unregister(void) { }
#endif /* CONFIG_OF */
/* ---------------------------------------------------------------------
* Module init/exit routines
*/
@ -1170,6 +1253,9 @@ static int __init ace_init(void)
goto err_blk;
}
if ((rc = ace_of_register()) != 0)
goto err_of;
pr_debug("xsysace: registering platform binding\n");
if ((rc = platform_driver_register(&ace_platform_driver)) != 0)
goto err_plat;
@ -1178,6 +1264,8 @@ static int __init ace_init(void)
return 0;
err_plat:
ace_of_unregister();
err_of:
unregister_blkdev(ace_major, "xsysace");
err_blk:
printk(KERN_ERR "xsysace: registration failed; err=%i\n", rc);
@ -1188,6 +1276,7 @@ static void __exit ace_exit(void)
{
pr_debug("Unregistering Xilinx SystemACE driver\n");
platform_driver_unregister(&ace_platform_driver);
ace_of_unregister();
unregister_blkdev(ace_major, "xsysace");
}