mxcmmc: decrease minimum frequency to make MMC cards work

[safe/jmp/linux-2.6] / drivers / amba / bus.c

diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index 889855d..3d763fd 100644 (file)
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -12,9 +12,10 @@
 #include <linux/device.h>
 #include <linux/string.h>
 #include <linux/slab.h>
+#include <linux/io.h>
 #include <linux/amba/bus.h>
 
-#include <asm/io.h>
+#include <asm/irq.h>
 #include <asm/sizes.h>
 
 #define to_amba_device(d)      container_of(d, struct amba_device, dev)
@@ -44,17 +45,13 @@ static int amba_match(struct device *dev, struct device_driver *drv)
 }
 
 #ifdef CONFIG_HOTPLUG
-static int amba_uevent(struct device *dev, char **envp, int nr_env, char *buf, int bufsz)
+static int amba_uevent(struct device *dev, struct kobj_uevent_env *env)
 {
        struct amba_device *pcdev = to_amba_device(dev);
+       int retval = 0;
 
-       if (nr_env < 2)
-               return -ENOMEM;
-
-       snprintf(buf, bufsz, "AMBA_ID=%08x", pcdev->periphid);
-       *envp++ = buf;
-       *envp++ = NULL;
-       return 0;
+       retval = add_uevent_var(env, "AMBA_ID=%08x", pcdev->periphid);
+       return retval;
 }
 #else
 #define amba_uevent NULL
@@ -80,12 +77,38 @@ static int amba_resume(struct device *dev)
        return ret;
 }
 
+#define amba_attr_func(name,fmt,arg...)                                        \
+static ssize_t name##_show(struct device *_dev,                                \
+                          struct device_attribute *attr, char *buf)    \
+{                                                                      \
+       struct amba_device *dev = to_amba_device(_dev);                 \
+       return sprintf(buf, fmt, arg);                                  \
+}
+
+#define amba_attr(name,fmt,arg...)     \
+amba_attr_func(name,fmt,arg)           \
+static DEVICE_ATTR(name, S_IRUGO, name##_show, NULL)
+
+amba_attr_func(id, "%08x\n", dev->periphid);
+amba_attr(irq0, "%u\n", dev->irq[0]);
+amba_attr(irq1, "%u\n", dev->irq[1]);
+amba_attr_func(resource, "\t%016llx\t%016llx\t%016lx\n",
+        (unsigned long long)dev->res.start, (unsigned long long)dev->res.end,
+        dev->res.flags);
+
+static struct device_attribute amba_dev_attrs[] = {
+       __ATTR_RO(id),
+       __ATTR_RO(resource),
+       __ATTR_NULL,
+};
+
 /*
  * Primecells are part of the Advanced Microcontroller Bus Architecture,
  * so we call the bus "amba".
  */
 static struct bus_type amba_bustype = {
        .name           = "amba",
+       .dev_attrs      = amba_dev_attrs,
        .match          = amba_match,
        .uevent         = amba_uevent,
        .suspend        = amba_suspend,
@@ -169,20 +192,6 @@ static void amba_device_release(struct device *dev)
        kfree(d);
 }
 
-#define amba_attr(name,fmt,arg...)                             \
-static ssize_t show_##name(struct device *_dev, struct device_attribute *attr, char *buf)      \
-{                                                              \
-       struct amba_device *dev = to_amba_device(_dev);         \
-       return sprintf(buf, fmt, arg);                          \
-}                                                              \
-static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
-
-amba_attr(id, "%08x\n", dev->periphid);
-amba_attr(irq0, "%u\n", dev->irq[0]);
-amba_attr(irq1, "%u\n", dev->irq[1]);
-amba_attr(resource, "\t%08lx\t%08lx\t%08lx\n",
-         dev->res.start, dev->res.end, dev->res.flags);
-
 /**
  *     amba_device_register - register an AMBA device
  *     @dev: AMBA device to register
@@ -201,46 +210,52 @@ int amba_device_register(struct amba_device *dev, struct resource *parent)
        dev->dev.release = amba_device_release;
        dev->dev.bus = &amba_bustype;
        dev->dev.dma_mask = &dev->dma_mask;
-       dev->res.name = dev->dev.bus_id;
+       dev->res.name = dev_name(&dev->dev);
 
        if (!dev->dev.coherent_dma_mask && dev->dma_mask)
                dev_warn(&dev->dev, "coherent dma mask is unset\n");
 
        ret = request_resource(parent, &dev->res);
-       if (ret == 0) {
-               tmp = ioremap(dev->res.start, SZ_4K);
-               if (!tmp) {
-                       ret = -ENOMEM;
-                       goto out;
-               }
-
-               for (pid = 0, i = 0; i < 4; i++)
-                       pid |= (readl(tmp + 0xfe0 + 4 * i) & 255) << (i * 8);
-               for (cid = 0, i = 0; i < 4; i++)
-                       cid |= (readl(tmp + 0xff0 + 4 * i) & 255) << (i * 8);
-
-               iounmap(tmp);
-
-               if (cid == 0xb105f00d)
-                       dev->periphid = pid;
-
-               if (dev->periphid)
-                       ret = device_register(&dev->dev);
-               else
-                       ret = -ENODEV;
-
-               if (ret == 0) {
-                       device_create_file(&dev->dev, &dev_attr_id);
-                       if (dev->irq[0] != NO_IRQ)
-                               device_create_file(&dev->dev, &dev_attr_irq0);
-                       if (dev->irq[1] != NO_IRQ)
-                               device_create_file(&dev->dev, &dev_attr_irq1);
-                       device_create_file(&dev->dev, &dev_attr_resource);
-               } else {
- out:
-                       release_resource(&dev->res);
-               }
+       if (ret)
+               goto err_out;
+
+       tmp = ioremap(dev->res.start, SZ_4K);
+       if (!tmp) {
+               ret = -ENOMEM;
+               goto err_release;
+       }
+
+       for (pid = 0, i = 0; i < 4; i++)
+               pid |= (readl(tmp + 0xfe0 + 4 * i) & 255) << (i * 8);
+       for (cid = 0, i = 0; i < 4; i++)
+               cid |= (readl(tmp + 0xff0 + 4 * i) & 255) << (i * 8);
+
+       iounmap(tmp);
+
+       if (cid == 0xb105f00d)
+               dev->periphid = pid;
+
+       if (!dev->periphid) {
+               ret = -ENODEV;
+               goto err_release;
        }
+
+       ret = device_register(&dev->dev);
+       if (ret)
+               goto err_release;
+
+       if (dev->irq[0] != NO_IRQ)
+               ret = device_create_file(&dev->dev, &dev_attr_irq0);
+       if (ret == 0 && dev->irq[1] != NO_IRQ)
+               ret = device_create_file(&dev->dev, &dev_attr_irq1);
+       if (ret == 0)
+               return ret;
+
+       device_unregister(&dev->dev);
+
+ err_release:
+       release_resource(&dev->res);
+ err_out:
        return ret;
 }
 
@@ -279,7 +294,7 @@ static int amba_find_match(struct device *dev, void *data)
        if (d->parent)
                r &= d->parent == dev->parent;
        if (d->busid)
-               r &= strcmp(dev->bus_id, d->busid) == 0;
+               r &= strcmp(dev_name(dev), d->busid) == 0;
 
        if (r) {
                get_device(dev);