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path: root/drivers/mfd/mcp-core.c
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Diffstat (limited to 'drivers/mfd/mcp-core.c')
-rw-r--r--drivers/mfd/mcp-core.c44
1 files changed, 42 insertions, 2 deletions
diff --git a/drivers/mfd/mcp-core.c b/drivers/mfd/mcp-core.c
index 84815f9ef636..63be60bc3455 100644
--- a/drivers/mfd/mcp-core.c
+++ b/drivers/mfd/mcp-core.c
@@ -26,9 +26,35 @@
#define to_mcp(d) container_of(d, struct mcp, attached_device)
#define to_mcp_driver(d) container_of(d, struct mcp_driver, drv)
+static const struct mcp_device_id *mcp_match_id(const struct mcp_device_id *id,
+ const char *codec)
+{
+ while (id->name[0]) {
+ if (strcmp(codec, id->name) == 0)
+ return id;
+ id++;
+ }
+ return NULL;
+}
+
+const struct mcp_device_id *mcp_get_device_id(const struct mcp *mcp)
+{
+ const struct mcp_driver *driver =
+ to_mcp_driver(mcp->attached_device.driver);
+
+ return mcp_match_id(driver->id_table, mcp->codec);
+}
+EXPORT_SYMBOL(mcp_get_device_id);
+
static int mcp_bus_match(struct device *dev, struct device_driver *drv)
{
- return 1;
+ const struct mcp *mcp = to_mcp(dev);
+ const struct mcp_driver *driver = to_mcp_driver(drv);
+
+ if (driver->id_table)
+ return !!mcp_match_id(driver->id_table, mcp->codec);
+
+ return 0;
}
static int mcp_bus_probe(struct device *dev)
@@ -74,9 +100,18 @@ static int mcp_bus_resume(struct device *dev)
return ret;
}
+static int mcp_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+ struct mcp *mcp = to_mcp(dev);
+
+ add_uevent_var(env, "MODALIAS=%s%s", MCP_MODULE_PREFIX, mcp->codec);
+ return 0;
+}
+
static struct bus_type mcp_bus_type = {
.name = "mcp",
.match = mcp_bus_match,
+ .uevent = mcp_bus_uevent,
.probe = mcp_bus_probe,
.remove = mcp_bus_remove,
.suspend = mcp_bus_suspend,
@@ -212,9 +247,14 @@ struct mcp *mcp_host_alloc(struct device *parent, size_t size)
}
EXPORT_SYMBOL(mcp_host_alloc);
-int mcp_host_register(struct mcp *mcp)
+int mcp_host_register(struct mcp *mcp, void *pdata)
{
+ if (!mcp->codec)
+ return -EINVAL;
+
+ mcp->attached_device.platform_data = pdata;
dev_set_name(&mcp->attached_device, "mcp0");
+ request_module("%s%s", MCP_MODULE_PREFIX, mcp->codec);
return device_register(&mcp->attached_device);
}
EXPORT_SYMBOL(mcp_host_register);