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sparc32: Convert apc to OF driver.

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Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-08-27 02:45:36 -07:00
parent 4b1c5df2af
commit 7e7e2f0356
1 changed files with 38 additions and 34 deletions
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72
arch/sparc/kernel/apc.c
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@ -12,9 +12,10 @@
#include <linux/miscdevice.h>
#include <linux/smp_lock.h>
#include <linux/pm.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <asm/io.h>
#include <asm/sbus.h>
#include <asm/oplib.h>
#include <asm/uaccess.h>
#include <asm/auxio.h>
@ -29,11 +30,10 @@
#define APC_OBPNAME "power-management"
#define APC_DEVNAME "apc"
volatile static u8 __iomem *regs;
static int apc_regsize;
static u8 __iomem *regs;
static int apc_no_idle __initdata = 0;
#define apc_readb(offs) (sbus_readb(regs+offs))
#define apc_readb(offs) (sbus_readb(regs+offs))
#define apc_writeb(val, offs) (sbus_writeb(val, regs+offs))
/* Specify "apc=noidle" on the kernel command line to
@ -69,9 +69,9 @@ static void apc_swift_idle(void)
#endif
}
static inline void apc_free(void)
static inline void apc_free(struct of_device *op)
{
sbus_iounmap(regs, apc_regsize);
of_iounmap(&op->resource[0], regs, resource_size(&op->resource[0]));
}
static int apc_open(struct inode *inode, struct file *f)
@ -153,52 +153,56 @@ static const struct file_operations apc_fops = {
static struct miscdevice apc_miscdev = { APC_MINOR, APC_DEVNAME, &apc_fops };
static int __init apc_probe(void)
static int __devinit apc_probe(struct of_device *op,
const struct of_device_id *match)
{
struct sbus_bus *sbus = NULL;
struct sbus_dev *sdev = NULL;
int iTmp = 0;
int err;
for_each_sbus(sbus) {
for_each_sbusdev(sdev, sbus) {
if (!strcmp(sdev->prom_name, APC_OBPNAME)) {
goto sbus_done;
}
}
}
sbus_done:
if (!sdev) {
return -ENODEV;
}
apc_regsize = sdev->reg_addrs[0].reg_size;
regs = sbus_ioremap(&sdev->resource[0], 0,
apc_regsize, APC_OBPNAME);
if(!regs) {
regs = of_ioremap(&op->resource[0], 0,
resource_size(&op->resource[0]), APC_OBPNAME);
if (!regs) {
printk(KERN_ERR "%s: unable to map registers\n", APC_DEVNAME);
return -ENODEV;
}
iTmp = misc_register(&apc_miscdev);
if (iTmp != 0) {
err = misc_register(&apc_miscdev);
if (err) {
printk(KERN_ERR "%s: unable to register device\n", APC_DEVNAME);
apc_free();
apc_free(op);
return -ENODEV;
}
/* Assign power management IDLE handler */
if(!apc_no_idle)
if (!apc_no_idle)
pm_idle = apc_swift_idle;
printk(KERN_INFO "%s: power management initialized%s\n",
APC_DEVNAME, apc_no_idle ? " (CPU idle disabled)" : "");
APC_DEVNAME, apc_no_idle ? " (CPU idle disabled)" : "");
return 0;
}
static struct of_device_id apc_match[] = {
{
.name = APC_OBPNAME,
},
{},
};
MODULE_DEVICE_TABLE(of, apc_match);
static struct of_platform_driver apc_driver = {
.name = "apc",
.match_table = apc_match,
.probe = apc_probe,
};
static int __init apc_init(void)
{
return of_register_driver(&apc_driver, &of_bus_type);
}
/* This driver is not critical to the boot process
* and is easiest to ioremap when SBus is already
* initialized, so we install ourselves thusly:
*/
__initcall(apc_probe);
__initcall(apc_init);