diff options
Diffstat (limited to 'drivers/misc/mic/bus/cosm_bus.c')
-rw-r--r-- | drivers/misc/mic/bus/cosm_bus.c | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/drivers/misc/mic/bus/cosm_bus.c b/drivers/misc/mic/bus/cosm_bus.c deleted file mode 100644 index 5f2141c71738..000000000000 --- a/drivers/misc/mic/bus/cosm_bus.c +++ /dev/null @@ -1,130 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Intel MIC Platform Software Stack (MPSS) - * - * Copyright(c) 2015 Intel Corporation. - * - * Intel MIC COSM Bus Driver - */ -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/idr.h> -#include "cosm_bus.h" - -/* Unique numbering for cosm devices. */ -static DEFINE_IDA(cosm_index_ida); - -static int cosm_dev_probe(struct device *d) -{ - struct cosm_device *dev = dev_to_cosm(d); - struct cosm_driver *drv = drv_to_cosm(dev->dev.driver); - - return drv->probe(dev); -} - -static int cosm_dev_remove(struct device *d) -{ - struct cosm_device *dev = dev_to_cosm(d); - struct cosm_driver *drv = drv_to_cosm(dev->dev.driver); - - drv->remove(dev); - return 0; -} - -static struct bus_type cosm_bus = { - .name = "cosm_bus", - .probe = cosm_dev_probe, - .remove = cosm_dev_remove, -}; - -int cosm_register_driver(struct cosm_driver *driver) -{ - driver->driver.bus = &cosm_bus; - return driver_register(&driver->driver); -} -EXPORT_SYMBOL_GPL(cosm_register_driver); - -void cosm_unregister_driver(struct cosm_driver *driver) -{ - driver_unregister(&driver->driver); -} -EXPORT_SYMBOL_GPL(cosm_unregister_driver); - -static inline void cosm_release_dev(struct device *d) -{ - struct cosm_device *cdev = dev_to_cosm(d); - - kfree(cdev); -} - -struct cosm_device * -cosm_register_device(struct device *pdev, struct cosm_hw_ops *hw_ops) -{ - struct cosm_device *cdev; - int ret; - - cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); - if (!cdev) - return ERR_PTR(-ENOMEM); - - cdev->dev.parent = pdev; - cdev->dev.release = cosm_release_dev; - cdev->hw_ops = hw_ops; - dev_set_drvdata(&cdev->dev, cdev); - cdev->dev.bus = &cosm_bus; - - /* Assign a unique device index and hence name */ - ret = ida_simple_get(&cosm_index_ida, 0, 0, GFP_KERNEL); - if (ret < 0) - goto free_cdev; - - cdev->index = ret; - cdev->dev.id = ret; - dev_set_name(&cdev->dev, "cosm-dev%u", cdev->index); - - ret = device_register(&cdev->dev); - if (ret) - goto ida_remove; - return cdev; -ida_remove: - ida_simple_remove(&cosm_index_ida, cdev->index); -free_cdev: - put_device(&cdev->dev); - return ERR_PTR(ret); -} -EXPORT_SYMBOL_GPL(cosm_register_device); - -void cosm_unregister_device(struct cosm_device *dev) -{ - int index = dev->index; /* save for after device release */ - - device_unregister(&dev->dev); - ida_simple_remove(&cosm_index_ida, index); -} -EXPORT_SYMBOL_GPL(cosm_unregister_device); - -struct cosm_device *cosm_find_cdev_by_id(int id) -{ - struct device *dev = subsys_find_device_by_id(&cosm_bus, id, NULL); - - return dev ? container_of(dev, struct cosm_device, dev) : NULL; -} -EXPORT_SYMBOL_GPL(cosm_find_cdev_by_id); - -static int __init cosm_init(void) -{ - return bus_register(&cosm_bus); -} - -static void __exit cosm_exit(void) -{ - bus_unregister(&cosm_bus); - ida_destroy(&cosm_index_ida); -} - -core_initcall(cosm_init); -module_exit(cosm_exit); - -MODULE_AUTHOR("Intel Corporation"); -MODULE_DESCRIPTION("Intel(R) MIC card OS state management bus driver"); -MODULE_LICENSE("GPL v2"); |