mirror of https://gitee.com/openkylin/linux.git
sun_uflash: Convert to pure OF driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
parent
8ab0dc333e
commit
0e52fe8c01
|
|
@ -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)
|
||||
|
|
|
|||
Loading…
Reference in New Issue