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sun_uflash: Convert to pure OF driver.

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Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-08-29 17:41:36 -07:00
parent 8ab0dc333e
commit 0e52fe8c01
1 changed files with 35 additions and 38 deletions
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73
drivers/mtd/maps/sun_uflash.c
View file

@ -1,13 +1,10 @@
/*
*
* sun_uflash - Driver implementation for user-programmable flash
* present on many Sun Microsystems SME boardsets.
/* sun_uflash.c - Driver for user-programmable flash on
* Sun Microsystems SME boardsets.
*
* This driver does NOT provide access to the OBP-flash for
* safety reasons-- use <linux>/drivers/sbus/char/flash.c instead.
*
* Copyright (c) 2001 Eric Brower (ebrower@usa.net)
*
*/
#include <linux/kernel.h>
@ -16,8 +13,8 @@
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <asm/ebus.h>
#include <asm/oplib.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <asm/prom.h>
#include <asm/uaccess.h>
#include <asm/io.h>
@ -26,67 +23,65 @@
#include <linux/mtd/map.h>
#define UFLASH_OBPNAME "flashprom"
#define UFLASH_DEVNAME "userflash"
#define DRIVER_NAME "sun_uflash"
#define PFX DRIVER_NAME ": "
#define UFLASH_WINDOW_SIZE 0x200000
#define UFLASH_BUSWIDTH 1 /* EBus is 8-bit */
MODULE_AUTHOR("Eric Brower <ebrower@usa.net>");
MODULE_DESCRIPTION("User-programmable flash device on Sun Microsystems boardsets");
MODULE_SUPPORTED_DEVICE("userflash");
MODULE_SUPPORTED_DEVICE(DRIVER_NAME);
MODULE_LICENSE("GPL");
MODULE_VERSION("2.0");
MODULE_VERSION("2.1");
static LIST_HEAD(device_list);
struct uflash_dev {
const char *name; /* device name */
struct map_info map; /* mtd map info */
struct mtd_info *mtd; /* mtd info */
};
struct map_info uflash_map_templ = {
.name = "SUNW,???-????",
.size = UFLASH_WINDOW_SIZE,
.bankwidth = UFLASH_BUSWIDTH,
};
int uflash_devinit(struct linux_ebus_device *edev, struct device_node *dp)
int uflash_devinit(struct of_device *op, struct device_node *dp)
{
struct uflash_dev *up;
struct resource *res;
res = &edev->resource[0];
if (edev->num_addrs != 1) {
if (op->resource[1].flags) {
/* Non-CFI userflash device-- once I find one we
* can work on supporting it.
*/
printk("%s: unsupported device at 0x%llx (%d regs): " \
"email ebrower@usa.net\n",
dp->full_name, (unsigned long long)res->start,
edev->num_addrs);
printk(KERN_ERR PFX "Unsupported device at %s, 0x%llx\n",
dp->full_name, (unsigned long long)op->resource[0].start);
return -ENODEV;
}
up = kzalloc(sizeof(struct uflash_dev), GFP_KERNEL);
if (!up)
if (!up) {
printk(KERN_ERR PFX "Cannot allocate struct uflash_dev\n");
return -ENOMEM;
}
/* copy defaults and tweak parameters */
memcpy(&up->map, &uflash_map_templ, sizeof(uflash_map_templ));
up->map.size = (res->end - res->start) + 1UL;
up->map.size = resource_size(&op->resource[0]);
up->name = of_get_property(dp, "model", NULL);
if (up->name && 0 < strlen(up->name))
up->map.name = (char *)up->name;
up->map.phys = res->start;
up->map.phys = op->resource[0].start;
up->map.virt = ioremap_nocache(res->start, up->map.size);
up->map.virt = of_ioremap(&op->resource[0], 0, up->map.size,
DRIVER_NAME);
if (!up->map.virt) {
printk("%s: Failed to map device.\n", dp->full_name);
printk(KERN_ERR PFX "Failed to map device.\n");
kfree(up);
return -EINVAL;
@ -97,7 +92,7 @@ int uflash_devinit(struct linux_ebus_device *edev, struct device_node *dp)
/* MTD registration */
up->mtd = do_map_probe("cfi_probe", &up->map);
if (!up->mtd) {
iounmap(up->map.virt);
of_iounmap(&op->resource[0], up->map.virt, up->map.size);
kfree(up);
return -ENXIO;
@ -107,32 +102,34 @@ int uflash_devinit(struct linux_ebus_device *edev, struct device_node *dp)
add_mtd_device(up->mtd);
dev_set_drvdata(&edev->ofdev.dev, up);
dev_set_drvdata(&op->dev, up);
return 0;
}
static int __devinit uflash_probe(struct of_device *dev, const struct of_device_id *match)
static int __devinit uflash_probe(struct of_device *op, const struct of_device_id *match)
{
struct linux_ebus_device *edev = to_ebus_device(&dev->dev);
struct device_node *dp = dev->node;
struct device_node *dp = op->node;
if (of_find_property(dp, "user", NULL))
/* Flashprom must have the "user" property in order to
* be used by this driver.
*/
if (!of_find_property(dp, "user", NULL))
return -ENODEV;
return uflash_devinit(edev, dp);
return uflash_devinit(op, dp);
}
static int __devexit uflash_remove(struct of_device *dev)
static int __devexit uflash_remove(struct of_device *op)
{
struct uflash_dev *up = dev_get_drvdata(&dev->dev);
struct uflash_dev *up = dev_get_drvdata(&op->dev);
if (up->mtd) {
del_mtd_device(up->mtd);
map_destroy(up->mtd);
}
if (up->map.virt) {
iounmap(up->map.virt);
of_iounmap(&op->resource[0], up->map.virt, up->map.size);
up->map.virt = NULL;
}
@ -151,7 +148,7 @@ static struct of_device_id uflash_match[] = {
MODULE_DEVICE_TABLE(of, uflash_match);
static struct of_platform_driver uflash_driver = {
.name = UFLASH_DEVNAME,
.name = DRIVER_NAME,
.match_table = uflash_match,
.probe = uflash_probe,
.remove = __devexit_p(uflash_remove),
@ -159,7 +156,7 @@ static struct of_platform_driver uflash_driver = {
static int __init uflash_init(void)
{
return of_register_driver(&uflash_driver, &ebus_bus_type);
return of_register_driver(&uflash_driver, &of_bus_type);
}
static void __exit uflash_exit(void)