diff mbox series

[v7,02/14] dmaengine: idxd: add external module driver support for dsa_bus_type

Message ID 20230710190654.299639-3-tom.zanussi@linux.intel.com (mailing list archive)
State Superseded
Headers show
Series crypto: Add Intel Analytics Accelerator (IAA) crypto compression driver | expand

Commit Message

Zanussi, Tom July 10, 2023, 7:06 p.m. UTC 
From: Dave Jiang <dave.jiang@intel.com>

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>
---
 drivers/dma/idxd/bus.c  | 6 ++++++
 drivers/dma/idxd/idxd.h | 3 +++
 2 files changed, 9 insertions(+)

Comments

Fenghua Yu July 12, 2023, 11:13 p.m. UTC | #1 
> From: Tom Zanussi <tom.zanussi@linux.intel.com>
> From: Dave Jiang <dave.jiang@intel.com>
> 
> 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>

Thanks.

-Fenghua
diff mbox series

Patch

diff --git a/drivers/dma/idxd/bus.c b/drivers/dma/idxd/bus.c
index 6f84621053c6..0c9e689a2e77 100644
--- a/drivers/dma/idxd/bus.c
+++ b/drivers/dma/idxd/bus.c
@@ -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);
 
diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h
index c62c78e1c9fa..276b5f9cf967 100644
--- a/drivers/dma/idxd/idxd.h
+++ b/drivers/dma/idxd/idxd.h
@@ -646,6 +646,9 @@  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) \