Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

Pull powerpc updates from Benjamin Herrenschmidt:
 "Here are the powerpc goodies for 3.5.  Main highlights are:

   - Support for the NX crypto engine in Power7+
   - A bunch of Anton goodness, including some micro optimization of our
     syscall entry on Power7
   - I converted a pile of our thermal control drivers to the new i2c
     APIs (essentially turning the old therm_pm72 into a proper set of
     windfarm drivers).  That's one more step toward removing the
     deprecated i2c APIs, there's still a few drivers to fix, but we are
     getting close
   - kexec/kdump support for 47x embedded cores

  The big missing thing here is no updates from Freescale.  Not sure
  what's up here, but with Kumar not working for them anymore things are
  a bit in a state of flux in that area."

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (71 commits)
  powerpc: Fix irq distribution
  Revert "powerpc/hw-breakpoint: Use generic hw-breakpoint interfaces for new PPC ptrace flags"
  powerpc: Fixing a cputhread code documentation
  powerpc/crypto: Enable the PFO-based encryption device
  powerpc/crypto: Build files for the nx device driver
  powerpc/crypto: debugfs routines and docs for the nx device driver
  powerpc/crypto: SHA512 hash routines for nx encryption
  powerpc/crypto: SHA256 hash routines for nx encryption
  powerpc/crypto: AES-XCBC mode routines for nx encryption
  powerpc/crypto: AES-GCM mode routines for nx encryption
  powerpc/crypto: AES-ECB mode routines for nx encryption
  powerpc/crypto: AES-CTR mode routines for nx encryption
  powerpc/crypto: AES-CCM mode routines for nx encryption
  powerpc/crypto: AES-CBC mode routines for nx encryption
  powerpc/crypto: nx driver code supporting nx encryption
  powerpc/pseries: Enable the PFO-based RNG accelerator
  powerpc/pseries/hwrng: PFO-based hwrng driver
  powerpc/pseries: Add PFO support to the VIO bus
  powerpc/pseries: Add pseries update notifier for OFDT prop changes
  powerpc/pseries: Add new hvcall constants to support PFO
  ...

1 files changed, 71 insertions, 27 deletions

diff --git a/drivers/i2c/busses/i2c-powermac.c b/drivers/i2c/busses/i2c-powermac.c
index 7b397c6f607e..31c47e18d83c 100644
--- a/drivers/i2c/busses/i2c-powermac.c
+++ b/drivers/i2c/busses/i2c-powermac.c
@@ -227,6 +227,72 @@ static int __devexit i2c_powermac_remove(struct platform_device *dev)
         return 0;
 }
 
+static void __devinit i2c_powermac_register_devices(struct i2c_adapter *adap,
+                                                    struct pmac_i2c_bus *bus)
+{
+        struct i2c_client *newdev;
+        struct device_node *node;
+
+        for_each_child_of_node(adap->dev.of_node, node) {
+                struct i2c_board_info info = {};
+                struct dev_archdata dev_ad = {};
+                const __be32 *reg;
+                char tmp[16];
+                u32 addr;
+                int len;
+
+                /* Get address & channel */
+                reg = of_get_property(node, "reg", &len);
+                if (!reg || (len < sizeof(int))) {
+                        dev_err(&adap->dev, "i2c-powermac: invalid reg on %s\n",
+                                node->full_name);
+                        continue;
+                }
+                addr = be32_to_cpup(reg);
+
+                /* Multibus setup, check channel */
+                if (!pmac_i2c_match_adapter(node, adap))
+                        continue;
+
+                dev_dbg(&adap->dev, "i2c-powermac: register %s\n",
+                        node->full_name);
+
+                /* Make up a modalias. Note: we to _NOT_ want the standard
+                 * i2c drivers to match with any of our powermac stuff
+                 * unless they have been specifically modified to handle
+                 * it on a case by case basis. For example, for thermal
+                 * control, things like lm75 etc... shall match with their
+                 * corresponding windfarm drivers, _NOT_ the generic ones,
+                 * so we force a prefix of AAPL, onto the modalias to
+                 * make that happen
+                 */
+                if (of_modalias_node(node, tmp, sizeof(tmp)) < 0) {
+                        dev_err(&adap->dev, "i2c-powermac: modalias failure"
+                                " on %s\n", node->full_name);
+                        continue;
+                }
+                snprintf(info.type, sizeof(info.type), "MAC,%s", tmp);
+
+                /* Fill out the rest of the info structure */
+                info.addr = (addr & 0xff) >> 1;
+                info.irq = irq_of_parse_and_map(node, 0);
+                info.of_node = of_node_get(node);
+                info.archdata = &dev_ad;
+
+                newdev = i2c_new_device(adap, &info);
+                if (!newdev) {
+                        dev_err(&adap->dev, "i2c-powermac: Failure to register"
+                                " %s\n", node->full_name);
+                        of_node_put(node);
+                        /* We do not dispose of the interrupt mapping on
+                         * purpose. It's not necessary (interrupt cannot be
+                         * re-used) and somebody else might have grabbed it
+                         * via direct DT lookup so let's not bother
+                         */
+                        continue;
+                }
+        }
+}
 
 static int __devinit i2c_powermac_probe(struct platform_device *dev)
 {
@@ -272,6 +338,7 @@ static int __devinit i2c_powermac_probe(struct platform_device *dev)
         adapter->algo = &i2c_powermac_algorithm;
         i2c_set_adapdata(adapter, bus);
         adapter->dev.parent = &dev->dev;
+        adapter->dev.of_node = dev->dev.of_node;
         rc = i2c_add_adapter(adapter);
         if (rc) {
                 printk(KERN_ERR "i2c-powermac: Adapter %s registration "
@@ -281,33 +348,10 @@ static int __devinit i2c_powermac_probe(struct platform_device *dev)
 
         printk(KERN_INFO "PowerMac i2c bus %s registered\n", adapter->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);
-                        }
-                }
-        }
+        /* Cannot use of_i2c_register_devices() due to Apple device-tree
+         * funkyness
+         */
+        i2c_powermac_register_devices(adapter, bus);
 
         return rc;
 }