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dmaengine: idxd: add external module driver support for dsa_bus_type 

Add support to allow an external driver to be registered to the
dsa_bus_type and also auto-loaded.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Reviewed-by: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Dave Jiang 2023-12-05 15:25:17 -06:00 committed by Herbert Xu
parent 8517c34e87
commit 15a6110152
2 changed files with 9 additions and 0 deletions
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6
drivers/dma/idxd/bus.c
View File

@ -67,11 +67,17 @@ static void idxd_config_bus_remove(struct device *dev)
idxd_drv->remove(idxd_dev);
}
static int idxd_bus_uevent(const struct device *dev, struct kobj_uevent_env *env)
{
return add_uevent_var(env, "MODALIAS=" IDXD_DEVICES_MODALIAS_FMT, 0);
}
struct bus_type dsa_bus_type = {
.name = "dsa",
.match = idxd_config_bus_match,
.probe = idxd_config_bus_probe,
.remove = idxd_config_bus_remove,
.uevent = idxd_bus_uevent,
};
EXPORT_SYMBOL_GPL(dsa_bus_type);

3
drivers/dma/idxd/idxd.h
View File

@ -655,6 +655,9 @@ static inline int idxd_wq_driver_name_match(struct idxd_wq *wq, struct device *d
return (strncmp(wq->driver_name, dev->driver->name, strlen(dev->driver->name)) == 0);
}
#define MODULE_ALIAS_IDXD_DEVICE(type) MODULE_ALIAS("idxd:t" __stringify(type) "*")
#define IDXD_DEVICES_MODALIAS_FMT "idxd:t%d"
int __must_check __idxd_driver_register(struct idxd_device_driver *idxd_drv,
struct module *module, const char *mod_name);
#define idxd_driver_register(driver) \