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[backfire] merge r21507 - add missing bits for 2.6.30 ssb update

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git-svn-id: svn://svn.openwrt.org/openwrt/branches/backfire@21554 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nico 2010-05-23 21:46:40 +00:00
parent c7adaeff2a
commit a8609ee7e8
1 changed files with 166 additions and 3 deletions
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169
target/linux/generic-2.6/patches-2.6.30/941-ssb_update.patch
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@ -128,7 +128,170 @@
+EXPORT_SYMBOL(ssb_pmu_set_ldo_paref);
--- a/drivers/ssb/main.c
+++ b/drivers/ssb/main.c
@@ -472,6 +472,8 @@ static int ssb_devices_register(struct s
@@ -120,6 +120,19 @@ static void ssb_device_put(struct ssb_de
put_device(dev->dev);
}
+static inline struct ssb_driver *ssb_driver_get(struct ssb_driver *drv)
+{
+ if (drv)
+ get_driver(&drv->drv);
+ return drv;
+}
+
+static inline void ssb_driver_put(struct ssb_driver *drv)
+{
+ if (drv)
+ put_driver(&drv->drv);
+}
+
static int ssb_device_resume(struct device *dev)
{
struct ssb_device *ssb_dev = dev_to_ssb_dev(dev);
@@ -190,90 +203,81 @@ int ssb_bus_suspend(struct ssb_bus *bus)
EXPORT_SYMBOL(ssb_bus_suspend);
#ifdef CONFIG_SSB_SPROM
-int ssb_devices_freeze(struct ssb_bus *bus)
+/** ssb_devices_freeze - Freeze all devices on the bus.
+ *
+ * After freezing no device driver will be handling a device
+ * on this bus anymore. ssb_devices_thaw() must be called after
+ * a successful freeze to reactivate the devices.
+ *
+ * @bus: The bus.
+ * @ctx: Context structure. Pass this to ssb_devices_thaw().
+ */
+int ssb_devices_freeze(struct ssb_bus *bus, struct ssb_freeze_context *ctx)
{
- struct ssb_device *dev;
- struct ssb_driver *drv;
- int err = 0;
- int i;
- pm_message_t state = PMSG_FREEZE;
+ struct ssb_device *sdev;
+ struct ssb_driver *sdrv;
+ unsigned int i;
+
+ memset(ctx, 0, sizeof(*ctx));
+ ctx->bus = bus;
+ SSB_WARN_ON(bus->nr_devices > ARRAY_SIZE(ctx->device_frozen));
- /* First check that we are capable to freeze all devices. */
for (i = 0; i < bus->nr_devices; i++) {
- dev = &(bus->devices[i]);
- if (!dev->dev ||
- !dev->dev->driver ||
- !device_is_registered(dev->dev))
- continue;
- drv = drv_to_ssb_drv(dev->dev->driver);
- if (!drv)
+ sdev = ssb_device_get(&bus->devices[i]);
+
+ if (!sdev->dev || !sdev->dev->driver ||
+ !device_is_registered(sdev->dev)) {
+ ssb_device_put(sdev);
continue;
- if (!drv->suspend) {
- /* Nope, can't suspend this one. */
- return -EOPNOTSUPP;
}
- }
- /* Now suspend all devices */
- for (i = 0; i < bus->nr_devices; i++) {
- dev = &(bus->devices[i]);
- if (!dev->dev ||
- !dev->dev->driver ||
- !device_is_registered(dev->dev))
- continue;
- drv = drv_to_ssb_drv(dev->dev->driver);
- if (!drv)
+ sdrv = ssb_driver_get(drv_to_ssb_drv(sdev->dev->driver));
+ if (!sdrv || SSB_WARN_ON(!sdrv->remove)) {
+ ssb_device_put(sdev);
continue;
- err = drv->suspend(dev, state);
- if (err) {
- ssb_printk(KERN_ERR PFX "Failed to freeze device %s\n",
- dev_name(dev->dev));
- goto err_unwind;
}
+ sdrv->remove(sdev);
+ ctx->device_frozen[i] = 1;
}
return 0;
-err_unwind:
- for (i--; i >= 0; i--) {
- dev = &(bus->devices[i]);
- if (!dev->dev ||
- !dev->dev->driver ||
- !device_is_registered(dev->dev))
- continue;
- drv = drv_to_ssb_drv(dev->dev->driver);
- if (!drv)
- continue;
- if (drv->resume)
- drv->resume(dev);
- }
- return err;
}
-int ssb_devices_thaw(struct ssb_bus *bus)
+/** ssb_devices_thaw - Unfreeze all devices on the bus.
+ *
+ * This will re-attach the device drivers and re-init the devices.
+ *
+ * @ctx: The context structure from ssb_devices_freeze()
+ */
+int ssb_devices_thaw(struct ssb_freeze_context *ctx)
{
- struct ssb_device *dev;
- struct ssb_driver *drv;
- int err;
- int i;
+ struct ssb_bus *bus = ctx->bus;
+ struct ssb_device *sdev;
+ struct ssb_driver *sdrv;
+ unsigned int i;
+ int err, result = 0;
for (i = 0; i < bus->nr_devices; i++) {
- dev = &(bus->devices[i]);
- if (!dev->dev ||
- !dev->dev->driver ||
- !device_is_registered(dev->dev))
+ if (!ctx->device_frozen[i])
continue;
- drv = drv_to_ssb_drv(dev->dev->driver);
- if (!drv)
+ sdev = &bus->devices[i];
+
+ if (SSB_WARN_ON(!sdev->dev || !sdev->dev->driver))
continue;
- if (SSB_WARN_ON(!drv->resume))
+ sdrv = drv_to_ssb_drv(sdev->dev->driver);
+ if (SSB_WARN_ON(!sdrv || !sdrv->probe))
continue;
- err = drv->resume(dev);
+
+ err = sdrv->probe(sdev, &sdev->id);
if (err) {
ssb_printk(KERN_ERR PFX "Failed to thaw device %s\n",
- dev_name(dev->dev));
+ dev_name(sdev->dev));
+ result = err;
}
+ ssb_driver_put(sdrv);
+ ssb_device_put(sdev);
}
- return 0;
+ return result;
}
#endif /* CONFIG_SSB_SPROM */
@@ -472,6 +476,8 @@ static int ssb_devices_register(struct s
case SSB_BUSTYPE_SSB:
dev->dma_mask = &dev->coherent_dma_mask;
break;
@ -137,7 +300,7 @@
}
sdev->dev = dev;
@@ -1358,8 +1360,10 @@ static int __init ssb_modinit(void)
@@ -1358,8 +1364,10 @@ static int __init ssb_modinit(void)
ssb_buses_lock();
err = ssb_attach_queued_buses();
ssb_buses_unlock();
@ -149,7 +312,7 @@
err = b43_pci_ssb_bridge_init();
if (err) {
@@ -1375,7 +1379,7 @@ static int __init ssb_modinit(void)
@@ -1375,7 +1383,7 @@ static int __init ssb_modinit(void)
/* don't fail SSB init because of this */
err = 0;
}