1 files changed, 29 insertions, 0 deletions

diff --git a/drivers/i2c/busses/i2c-powermac.c b/drivers/i2c/busses/i2c-powermac.c
index 0e7b1c6724aa..60ca91745e55 100644
--- a/drivers/i2c/busses/i2c-powermac.c
+++ b/drivers/i2c/busses/i2c-powermac.c
@@ -259,6 +259,35 @@ static int __devinit i2c_powermac_probe(struct platform_device *dev)
         }
 
         printk(KERN_INFO "PowerMac i2c bus %s registered\n", name);
+
+        if (!strncmp(basename, "uni-n", 5)) {
+                struct device_node *np;
+                const u32 *prop;
+                struct i2c_board_info info;
+
+                /* Instantiate I2C motion sensor if present */
+                np = of_find_node_by_name(NULL, "accelerometer");
+                if (np && of_device_is_compatible(np, "AAPL,accelerometer_1") &&
+                    (prop = of_get_property(np, "reg", NULL))) {
+                        int i2c_bus;
+                        const char *tmp_bus;
+
+                        /* look for bus either using "reg" or by path */
+                        tmp_bus = strstr(np->full_name, "/i2c-bus@");
+                        if (tmp_bus)
+                                i2c_bus = *(tmp_bus + 9) - '0';
+                        else
+                                i2c_bus = ((*prop) >> 8) & 0x0f;
+
+                        if (pmac_i2c_get_channel(bus) == i2c_bus) {
+                                memset(&info, 0, sizeof(struct i2c_board_info));
+                                info.addr = ((*prop) & 0xff) >> 1;
+                                strlcpy(info.type, "ams", I2C_NAME_SIZE);
+                                i2c_new_device(adapter, &info);
+                        }
+                }
+        }
+
         return rc;
 }