AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

[PATCH] I2C-MPC: Restore code removed

Browse Source 
A previous patch to remove support for the OCP device model was way to
generious and moved some of the platform device model code, oops.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Kumar Gala 2005-07-27 11:43:26 -07:00 committed by Linus Torvalds
parent 388b0925f5
commit 8c86cb127b
1 changed files with 94 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

94
drivers/i2c/busses/i2c-mpc.c
View File

@ -288,6 +288,100 @@ static struct i2c_adapter mpc_ops = {
.retries = 1
};
static int fsl_i2c_probe(struct device *device)
{
int result = 0;
struct mpc_i2c *i2c;
struct platform_device *pdev = to_platform_device(device);
struct fsl_i2c_platform_data *pdata;
struct resource *r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
pdata = (struct fsl_i2c_platform_data *) pdev->dev.platform_data;
if (!(i2c = kmalloc(sizeof(*i2c), GFP_KERNEL))) {
return -ENOMEM;
}
memset(i2c, 0, sizeof(*i2c));
i2c->irq = platform_get_irq(pdev, 0);
i2c->flags = pdata->device_flags;
init_waitqueue_head(&i2c->queue);
i2c->base = ioremap((phys_addr_t)r->start, MPC_I2C_REGION);
if (!i2c->base) {
printk(KERN_ERR "i2c-mpc - failed to map controller\n");
result = -ENOMEM;
goto fail_map;
}
if (i2c->irq != 0)
if ((result = request_irq(i2c->irq, mpc_i2c_isr,
SA_SHIRQ, "i2c-mpc", i2c)) < 0) {
printk(KERN_ERR
"i2c-mpc - failed to attach interrupt\n");
goto fail_irq;
}
mpc_i2c_setclock(i2c);
dev_set_drvdata(device, i2c);
i2c->adap = mpc_ops;
i2c_set_adapdata(&i2c->adap, i2c);
i2c->adap.dev.parent = &pdev->dev;
if ((result = i2c_add_adapter(&i2c->adap)) < 0) {
printk(KERN_ERR "i2c-mpc - failed to add adapter\n");
goto fail_add;
}
return result;
fail_add:
if (i2c->irq != 0)
free_irq(i2c->irq, NULL);
fail_irq:
iounmap(i2c->base);
fail_map:
kfree(i2c);
return result;
};
static int fsl_i2c_remove(struct device *device)
{
struct mpc_i2c *i2c = dev_get_drvdata(device);
i2c_del_adapter(&i2c->adap);
dev_set_drvdata(device, NULL);
if (i2c->irq != 0)
free_irq(i2c->irq, i2c);
iounmap(i2c->base);
kfree(i2c);
return 0;
};
/* Structure for a device driver */
static struct device_driver fsl_i2c_driver = {
.name = "fsl-i2c",
.bus = &platform_bus_type,
.probe = fsl_i2c_probe,
.remove = fsl_i2c_remove,
};
static int __init fsl_i2c_init(void)
{
return driver_register(&fsl_i2c_driver);
}
static void __exit fsl_i2c_exit(void)
{
driver_unregister(&fsl_i2c_driver);
}
module_init(fsl_i2c_init);
module_exit(fsl_i2c_exit);
MODULE_AUTHOR("Adrian Cox <adrian@humboldt.co.uk>");
MODULE_DESCRIPTION
("I2C-Bus adapter for MPC107 bridge and MPC824x/85xx/52xx processors");