Release 4.7 drivers/mtd/maps/sun_uflash.c
/* 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>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/slab.h>
#include <asm/prom.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#define UFLASH_OBPNAME "flashprom"
#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(DRIVER_NAME);
MODULE_LICENSE("GPL");
MODULE_VERSION("2.1");
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 platform_device *op, struct device_node *dp)
{
struct uflash_dev *up;
if (op->resource[1].flags) {
/* Non-CFI userflash device-- once I find one we
* can work on supporting it.
*/
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) {
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 = resource_size(&op->resource[0]);
up->name = of_get_property(dp, "model", NULL);
if (up->name && 0 < strlen(up->name))
up->map.name = up->name;
up->map.phys = op->resource[0].start;
up->map.virt = of_ioremap(&op->resource[0], 0, up->map.size,
DRIVER_NAME);
if (!up->map.virt) {
printk(KERN_ERR PFX "Failed to map device.\n");
kfree(up);
return -EINVAL;
}
simple_map_init(&up->map);
/* MTD registration */
up->mtd = do_map_probe("cfi_probe", &up->map);
if (!up->mtd) {
of_iounmap(&op->resource[0], up->map.virt, up->map.size);
kfree(up);
return -ENXIO;
}
up->mtd->owner = THIS_MODULE;
mtd_device_register(up->mtd, NULL, 0);
dev_set_drvdata(&op->dev, up);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| david s. miller | david s. miller | 119 | 37.66% | 2 | 22.22% |
| linus torvalds | linus torvalds | 103 | 32.59% | 2 | 22.22% |
| pre-git | pre-git | 67 | 21.20% | 1 | 11.11% |
| david woodhouse | david woodhouse | 17 | 5.38% | 1 | 11.11% |
| jamie iles | jamie iles | 5 | 1.58% | 1 | 11.11% |
| tom 'spot' callaway | tom 'spot' callaway | 4 | 1.27% | 1 | 11.11% |
| grant likely | grant likely | 1 | 0.32% | 1 | 11.11% |
| Total | 316 | 100.00% | 9 | 100.00% |
static int uflash_probe(struct platform_device *op)
{
struct device_node *dp = op->dev.of_node;
/* 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(op, dp);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| david s. miller | david s. miller | 22 | 46.81% | 2 | 33.33% |
| linus torvalds | linus torvalds | 17 | 36.17% | 1 | 16.67% |
| grant likely | grant likely | 4 | 8.51% | 2 | 33.33% |
| pre-git | pre-git | 4 | 8.51% | 1 | 16.67% |
| Total | 47 | 100.00% | 6 | 100.00% |
static int uflash_remove(struct platform_device *op)
{
struct uflash_dev *up = dev_get_drvdata(&op->dev);
if (up->mtd) {
mtd_device_unregister(up->mtd);
map_destroy(up->mtd);
}
if (up->map.virt) {
of_iounmap(&op->resource[0], up->map.virt, up->map.size);
up->map.virt = NULL;
}
kfree(up);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| david s. miller | david s. miller | 38 | 40.00% | 2 | 25.00% |
| linus torvalds | linus torvalds | 33 | 34.74% | 1 | 12.50% |
| pre-git | pre-git | 18 | 18.95% | 1 | 12.50% |
| david woodhouse | david woodhouse | 3 | 3.16% | 1 | 12.50% |
| grant likely | grant likely | 1 | 1.05% | 1 | 12.50% |
| jamie iles | jamie iles | 1 | 1.05% | 1 | 12.50% |
| al viro | al viro | 1 | 1.05% | 1 | 12.50% |
| Total | 95 | 100.00% | 8 | 100.00% |
static const struct of_device_id uflash_match[] = {
{
.name = UFLASH_OBPNAME,
},
{},
};
MODULE_DEVICE_TABLE(of, uflash_match);
static struct platform_driver uflash_driver = {
.driver = {
.name = DRIVER_NAME,
.of_match_table = uflash_match,
},
.probe = uflash_probe,
.remove = uflash_remove,
};
module_platform_driver(uflash_driver);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| david s. miller | david s. miller | 242 | 37.29% | 3 | 15.79% |
| linus torvalds | linus torvalds | 219 | 33.74% | 2 | 10.53% |
| pre-git | pre-git | 130 | 20.03% | 1 | 5.26% |
| david woodhouse | david woodhouse | 22 | 3.39% | 2 | 10.53% |
| grant likely | grant likely | 13 | 2.00% | 4 | 21.05% |
| art haas | art haas | 6 | 0.92% | 1 | 5.26% |
| jamie iles | jamie iles | 6 | 0.92% | 1 | 5.26% |
| tom 'spot' callaway | tom 'spot' callaway | 4 | 0.62% | 1 | 5.26% |
| tejun heo | tejun heo | 3 | 0.46% | 1 | 5.26% |
| axel lin | axel lin | 2 | 0.31% | 1 | 5.26% |
| stephen rothwell | stephen rothwell | 1 | 0.15% | 1 | 5.26% |
| al viro | al viro | 1 | 0.15% | 1 | 5.26% |
| Total | 649 | 100.00% | 19 | 100.00% |
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