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