[PATCH] I2C-MPC: Restore code removed
From: Kumar Gala <hidden>
Date: 2005-07-15 02:58:55
Greg, If we can get this to Linus before 2.6.13 is released that would be a good thing. 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 <redacted> --- commit 0a224850142b1169b5a67735e51268057d24b833 tree fd8ba3598b6ba6585e2dd90c2d53138d7e6c7d17 parent 1eccf76f7b943d1e4b722c7f0847876127cad8b7 author Kumar K. Gala [off-list ref] Thu, 14 Jul 2005 21:41:36 -0500 committer Kumar K. Gala [off-list ref] Thu, 14 Jul 2005 21:41:36 -0500 drivers/i2c/busses/i2c-mpc.c | 94 ++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 94 insertions(+), 0 deletions(-)
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c@@ -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");