3 files changed, 48 insertions, 41 deletions

diff --git a/drivers/hwmon/ams/ams-i2c.c b/drivers/hwmon/ams/ams-i2c.c
index 957760536a4c..da26de01068e 100644
--- a/drivers/hwmon/ams/ams-i2c.c
+++ b/drivers/hwmon/ams/ams-i2c.c
@@ -60,26 +60,34 @@ enum ams_i2c_cmd {
         AMS_CMD_START,
 };
 
-static int ams_i2c_attach(struct i2c_adapter *adapter);
-static int ams_i2c_detach(struct i2c_adapter *adapter);
+static int ams_i2c_probe(struct i2c_client *client,
+                         const struct i2c_device_id *id);
+static int ams_i2c_remove(struct i2c_client *client);
+
+static const struct i2c_device_id ams_id[] = {
+        { "ams", 0 },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, ams_id);
 
 static struct i2c_driver ams_i2c_driver = {
         .driver = {
                 .name   = "ams",
                 .owner  = THIS_MODULE,
         },
-        .attach_adapter = ams_i2c_attach,
-        .detach_adapter = ams_i2c_detach,
+        .probe          = ams_i2c_probe,
+        .remove         = ams_i2c_remove,
+        .id_table       = ams_id,
 };
 
 static s32 ams_i2c_read(u8 reg)
 {
-        return i2c_smbus_read_byte_data(&ams_info.i2c_client, reg);
+        return i2c_smbus_read_byte_data(ams_info.i2c_client, reg);
 }
 
 static int ams_i2c_write(u8 reg, u8 value)
 {
-        return i2c_smbus_write_byte_data(&ams_info.i2c_client, reg, value);
+        return i2c_smbus_write_byte_data(ams_info.i2c_client, reg, value);
 }
 
 static int ams_i2c_cmd(enum ams_i2c_cmd cmd)
@@ -152,9 +160,9 @@ static void ams_i2c_get_xyz(s8 *x, s8 *y, s8 *z)
         *z = ams_i2c_read(AMS_DATAZ);
 }
 
-static int ams_i2c_attach(struct i2c_adapter *adapter)
+static int ams_i2c_probe(struct i2c_client *client,
+                         const struct i2c_device_id *id)
 {
-        unsigned long bus;
         int vmaj, vmin;
         int result;
 
@@ -162,17 +170,7 @@ static int ams_i2c_attach(struct i2c_adapter *adapter)
         if (unlikely(ams_info.has_device))
                 return -ENODEV;
 
-        if (strncmp(adapter->name, "uni-n", 5))
-                return -ENODEV;
-
-        bus = simple_strtoul(adapter->name + 6, NULL, 10);
-        if (bus != ams_info.i2c_bus)
-                return -ENODEV;
-
-        ams_info.i2c_client.addr = ams_info.i2c_address;
-        ams_info.i2c_client.adapter = adapter;
-        ams_info.i2c_client.driver = &ams_i2c_driver;
-        strcpy(ams_info.i2c_client.name, "Apple Motion Sensor");
+        ams_info.i2c_client = client;
 
         if (ams_i2c_cmd(AMS_CMD_RESET)) {
                 printk(KERN_INFO "ams: Failed to reset the device\n");
@@ -237,7 +235,7 @@ static int ams_i2c_attach(struct i2c_adapter *adapter)
         return 0;
 }
 
-static int ams_i2c_detach(struct i2c_adapter *adapter)
+static int ams_i2c_remove(struct i2c_client *client)
 {
         if (ams_info.has_device) {
                 /* Disable interrupts */
@@ -261,9 +259,7 @@ static void ams_i2c_exit(void)
 
 int __init ams_i2c_init(struct device_node *np)
 {
-        char *tmp_bus;
         int result;
-        const u32 *prop;
 
         mutex_lock(&ams_info.lock);
 
@@ -275,24 +271,8 @@ int __init ams_i2c_init(struct device_node *np)
         ams_info.clear_irq = ams_i2c_clear_irq;
         ams_info.bustype = BUS_I2C;
 
-        /* look for bus either using "reg" or by path */
-        prop = of_get_property(ams_info.of_node, "reg", NULL);
-        if (!prop) {
-                result = -ENODEV;
-
-                goto exit;
-        }
-
-        tmp_bus = strstr(ams_info.of_node->full_name, "/i2c-bus@");
-        if (tmp_bus)
-                ams_info.i2c_bus = *(tmp_bus + 9) - '0';
-        else
-                ams_info.i2c_bus = ((*prop) >> 8) & 0x0f;
-        ams_info.i2c_address = ((*prop) & 0xff) >> 1;
-
         result = i2c_add_driver(&ams_i2c_driver);
 
-exit:
         mutex_unlock(&ams_info.lock);
 
         return result;
diff --git a/drivers/hwmon/ams/ams.h b/drivers/hwmon/ams/ams.h
index 221ef6915a5f..5ed387b0bd9a 100644
--- a/drivers/hwmon/ams/ams.h
+++ b/drivers/hwmon/ams/ams.h
@@ -46,9 +46,7 @@ struct ams {
 
 #ifdef CONFIG_SENSORS_AMS_I2C
         /* I2C properties */
-        int i2c_bus;
-        int i2c_address;
-        struct i2c_client i2c_client;
+        struct i2c_client *i2c_client;
 #endif
 
         /* Joystick emulation */
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;
 }