Merge mulgrave-w:git/scsi-misc-2.6

[pandora-kernel.git] / drivers / macintosh / windfarm_max6690_sensor.c

diff --git a/drivers/macintosh/windfarm_max6690_sensor.c b/drivers/macintosh/windfarm_max6690_sensor.c
index 5b9ad6c..eae1189 100644 (file)
--- a/drivers/macintosh/windfarm_max6690_sensor.c
+++ b/drivers/macintosh/windfarm_max6690_sensor.c
@@ -11,13 +11,12 @@
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/i2c.h>
-#include <linux/i2c-dev.h>
 #include <asm/prom.h>
 #include <asm/pmac_low_i2c.h>
 
 #include "windfarm.h"
 
-#define VERSION "0.1"
+#define VERSION "0.2"
 
 /* This currently only exports the external temperature sensor,
    since that's all the control loops need. */
@@ -81,7 +80,7 @@ static struct wf_sensor_ops wf_max6690_ops = {
 static void wf_max6690_create(struct i2c_adapter *adapter, u8 addr)
 {
        struct wf_6690_sensor *max;
-       char *name = "u4-temp";
+       char *name = "backside-temp";
 
        max = kzalloc(sizeof(struct wf_6690_sensor), GFP_KERNEL);
        if (max == NULL) {
@@ -118,7 +117,6 @@ static int wf_max6690_attach(struct i2c_adapter *adapter)
        struct device_node *busnode, *dev = NULL;
        struct pmac_i2c_bus *bus;
        const char *loc;
-       u32 *reg;
 
        bus = pmac_i2c_adapter_to_bus(adapter);
        if (bus == NULL)
@@ -126,16 +124,23 @@ static int wf_max6690_attach(struct i2c_adapter *adapter)
        busnode = pmac_i2c_get_bus_node(bus);
 
        while ((dev = of_get_next_child(busnode, dev)) != NULL) {
+               u8 addr;
+
+               /* We must re-match the adapter in order to properly check
+                * the channel on multibus setups
+                */
+               if (!pmac_i2c_match_adapter(dev, adapter))
+                       continue;
                if (!device_is_compatible(dev, "max6690"))
                        continue;
+               addr = pmac_i2c_get_dev_addr(dev);
                loc = get_property(dev, "hwsensor-location", NULL);
-               reg = (u32 *) get_property(dev, "reg", NULL);
-               if (!loc || !reg)
+               if (loc == NULL || addr == 0)
                        continue;
-               printk("found max6690, loc=%s reg=%x\n", loc, *reg);
+               printk("found max6690, loc=%s addr=0x%02x\n", loc, addr);
                if (strcmp(loc, "BACKSIDE"))
                        continue;
-               wf_max6690_create(adapter, *reg);
+               wf_max6690_create(adapter, addr);
        }
 
        return 0;
@@ -153,6 +158,11 @@ static int wf_max6690_detach(struct i2c_client *client)
 
 static int __init wf_max6690_sensor_init(void)
 {
+       /* Don't register on old machines that use therm_pm72 for now */
+       if (machine_is_compatible("PowerMac7,2") ||
+           machine_is_compatible("PowerMac7,3") ||
+           machine_is_compatible("RackMac3,1"))
+               return -ENODEV;
        return i2c_add_driver(&wf_max6690_driver);
 }