diff options
author | Jochen Friedrich <jochen@scram.de> | 2011-11-27 22:00:54 +0100 |
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committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-01-09 00:37:33 +0100 |
commit | 5dd7bf59e0e8563265b3e5b33276099ef628fcc7 (patch) | |
tree | 1372dd626865e4ed21cac103a706f06ef6ff700e /drivers/mfd/mcp-core.c | |
parent | c9531227b289947950cce29cfe881b768bf9d7d9 (diff) | |
download | lwn-5dd7bf59e0e8563265b3e5b33276099ef628fcc7.tar.gz lwn-5dd7bf59e0e8563265b3e5b33276099ef628fcc7.zip |
ARM: sa11x0: Implement autoloading of codec and codec pdata for mcp bus.
Signed-off-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/mcp-core.c')
-rw-r--r-- | drivers/mfd/mcp-core.c | 44 |
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); |