i2c: Add OF-style registration and binding
Grant Likely [Tue, 8 Jun 2010 13:48:19 +0000 (07:48 -0600)]
This patch adds OF hooks to the i2c core so that devices can automatically
be registered based on device tree data.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

drivers/i2c/busses/i2c-cpm.c
drivers/i2c/busses/i2c-ibm_iic.c
drivers/i2c/busses/i2c-mpc.c
drivers/i2c/i2c-core.c

index 03ae62e..e591de1 100644 (file)
@@ -677,11 +677,6 @@ static int __devinit cpm_i2c_probe(struct of_device *ofdev,
        dev_dbg(&ofdev->dev, "hw routines for %s registered.\n",
                cpm->adap.name);
 
-       /*
-        * register OF I2C devices
-        */
-       of_i2c_register_devices(&cpm->adap);
-
        return 0;
 out_shut:
        cpm_i2c_shutdown(cpm);
index d964121..1168d61 100644 (file)
@@ -761,9 +761,6 @@ static int __devinit iic_probe(struct of_device *ofdev,
        dev_info(&ofdev->dev, "using %s mode\n",
                 dev->fast_mode ? "fast (400 kHz)" : "standard (100 kHz)");
 
-       /* Now register all the child nodes */
-       of_i2c_register_devices(adap);
-
        return 0;
 
 error_cleanup:
index d2e26d2..9f7fef8 100644 (file)
@@ -607,7 +607,6 @@ static int __devinit fsl_i2c_probe(struct of_device *op,
                dev_err(i2c->dev, "failed to add adapter\n");
                goto fail_add;
        }
-       of_i2c_register_devices(&i2c->adap);
 
        return result;
 
index 1cca263..5588ac1 100644 (file)
@@ -30,6 +30,8 @@
 #include <linux/init.h>
 #include <linux/idr.h>
 #include <linux/mutex.h>
+#include <linux/of_i2c.h>
+#include <linux/of_device.h>
 #include <linux/completion.h>
 #include <linux/hardirq.h>
 #include <linux/irqflags.h>
@@ -70,6 +72,10 @@ static int i2c_device_match(struct device *dev, struct device_driver *drv)
        if (!client)
                return 0;
 
+       /* Attempt an OF style match */
+       if (of_driver_match_device(dev, drv))
+               return 1;
+
        driver = to_i2c_driver(drv);
        /* match on an id table if there is one */
        if (driver->id_table)
@@ -790,6 +796,9 @@ static int i2c_register_adapter(struct i2c_adapter *adap)
        if (adap->nr < __i2c_first_dynamic_bus_num)
                i2c_scan_static_board_info(adap);
 
+       /* Register devices from the device tree */
+       of_i2c_register_devices(adap);
+
        /* Notify drivers */
        mutex_lock(&core_lock);
        dummy = bus_for_each_drv(&i2c_bus_type, NULL, adap,