diff options
Diffstat (limited to 'drivers/sh/superhyway/superhyway.c')
-rw-r--r-- | drivers/sh/superhyway/superhyway.c | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/drivers/sh/superhyway/superhyway.c b/drivers/sh/superhyway/superhyway.c deleted file mode 100644 index 44324abe21da..000000000000 --- a/drivers/sh/superhyway/superhyway.c +++ /dev/null @@ -1,234 +0,0 @@ -/* - * drivers/sh/superhyway/superhyway.c - * - * SuperHyway Bus Driver - * - * Copyright (C) 2004, 2005 Paul Mundt <lethal@linux-sh.org> - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - */ -#include <linux/kernel.h> -#include <linux/device.h> -#include <linux/init.h> -#include <linux/module.h> -#include <linux/types.h> -#include <linux/list.h> -#include <linux/superhyway.h> -#include <linux/string.h> -#include <linux/slab.h> - -static int superhyway_devices; - -static struct device superhyway_bus_device = { - .init_name = "superhyway", -}; - -static void superhyway_device_release(struct device *dev) -{ - struct superhyway_device *sdev = to_superhyway_device(dev); - - kfree(sdev->resource); - kfree(sdev); -} - -/** - * superhyway_add_device - Add a SuperHyway module - * @base: Physical address where module is mapped. - * @sdev: SuperHyway device to add, or NULL to allocate a new one. - * @bus: Bus where SuperHyway module resides. - * - * This is responsible for adding a new SuperHyway module. This sets up a new - * struct superhyway_device for the module being added if @sdev == NULL. - * - * Devices are initially added in the order that they are scanned (from the - * top-down of the memory map), and are assigned an ID based on the order that - * they are added. Any manual addition of a module will thus get the ID after - * the devices already discovered regardless of where it resides in memory. - * - * Further work can and should be done in superhyway_scan_bus(), to be sure - * that any new modules are properly discovered and subsequently registered. - */ -int superhyway_add_device(unsigned long base, struct superhyway_device *sdev, - struct superhyway_bus *bus) -{ - struct superhyway_device *dev = sdev; - - if (!dev) { - dev = kzalloc(sizeof(struct superhyway_device), GFP_KERNEL); - if (!dev) - return -ENOMEM; - - } - - dev->bus = bus; - superhyway_read_vcr(dev, base, &dev->vcr); - - if (!dev->resource) { - dev->resource = kzalloc(sizeof(struct resource), GFP_KERNEL); - if (!dev->resource) { - kfree(dev); - return -ENOMEM; - } - - dev->resource->name = dev->name; - dev->resource->start = base; - dev->resource->end = dev->resource->start + 0x01000000; - } - - dev->dev.parent = &superhyway_bus_device; - dev->dev.bus = &superhyway_bus_type; - dev->dev.release = superhyway_device_release; - dev->id.id = dev->vcr.mod_id; - - sprintf(dev->name, "SuperHyway device %04x", dev->id.id); - dev_set_name(&dev->dev, "%02x", superhyway_devices); - - superhyway_devices++; - - return device_register(&dev->dev); -} - -int superhyway_add_devices(struct superhyway_bus *bus, - struct superhyway_device **devices, - int nr_devices) -{ - int i, ret = 0; - - for (i = 0; i < nr_devices; i++) { - struct superhyway_device *dev = devices[i]; - ret |= superhyway_add_device(dev->resource[0].start, dev, bus); - } - - return ret; -} - -static int __init superhyway_init(void) -{ - struct superhyway_bus *bus; - int ret; - - ret = device_register(&superhyway_bus_device); - if (unlikely(ret)) - return ret; - - for (bus = superhyway_channels; bus->ops; bus++) - ret |= superhyway_scan_bus(bus); - - return ret; -} -postcore_initcall(superhyway_init); - -static const struct superhyway_device_id * -superhyway_match_id(const struct superhyway_device_id *ids, - struct superhyway_device *dev) -{ - while (ids->id) { - if (ids->id == dev->id.id) - return ids; - - ids++; - } - - return NULL; -} - -static int superhyway_device_probe(struct device *dev) -{ - struct superhyway_device *shyway_dev = to_superhyway_device(dev); - struct superhyway_driver *shyway_drv = to_superhyway_driver(dev->driver); - - if (shyway_drv && shyway_drv->probe) { - const struct superhyway_device_id *id; - - id = superhyway_match_id(shyway_drv->id_table, shyway_dev); - if (id) - return shyway_drv->probe(shyway_dev, id); - } - - return -ENODEV; -} - -static void superhyway_device_remove(struct device *dev) -{ - struct superhyway_device *shyway_dev = to_superhyway_device(dev); - struct superhyway_driver *shyway_drv = to_superhyway_driver(dev->driver); - - if (shyway_drv->remove) - shyway_drv->remove(shyway_dev); -} - -/** - * superhyway_register_driver - Register a new SuperHyway driver - * @drv: SuperHyway driver to register. - * - * This registers the passed in @drv. Any devices matching the id table will - * automatically be populated and handed off to the driver's specified probe - * routine. - */ -int superhyway_register_driver(struct superhyway_driver *drv) -{ - drv->drv.name = drv->name; - drv->drv.bus = &superhyway_bus_type; - - return driver_register(&drv->drv); -} - -/** - * superhyway_unregister_driver - Unregister a SuperHyway driver - * @drv: SuperHyway driver to unregister. - * - * This cleans up after superhyway_register_driver(), and should be invoked in - * the exit path of any module drivers. - */ -void superhyway_unregister_driver(struct superhyway_driver *drv) -{ - driver_unregister(&drv->drv); -} - -static int superhyway_bus_match(struct device *dev, struct device_driver *drv) -{ - struct superhyway_device *shyway_dev = to_superhyway_device(dev); - struct superhyway_driver *shyway_drv = to_superhyway_driver(drv); - const struct superhyway_device_id *ids = shyway_drv->id_table; - - if (!ids) - return -EINVAL; - if (superhyway_match_id(ids, shyway_dev)) - return 1; - - return -ENODEV; -} - -struct bus_type superhyway_bus_type = { - .name = "superhyway", - .match = superhyway_bus_match, -#ifdef CONFIG_SYSFS - .dev_groups = superhyway_dev_groups, -#endif - .probe = superhyway_device_probe, - .remove = superhyway_device_remove, -}; - -static int __init superhyway_bus_init(void) -{ - return bus_register(&superhyway_bus_type); -} - -static void __exit superhyway_bus_exit(void) -{ - device_unregister(&superhyway_bus_device); - bus_unregister(&superhyway_bus_type); -} - -core_initcall(superhyway_bus_init); -module_exit(superhyway_bus_exit); - -EXPORT_SYMBOL(superhyway_bus_type); -EXPORT_SYMBOL(superhyway_add_device); -EXPORT_SYMBOL(superhyway_add_devices); -EXPORT_SYMBOL(superhyway_register_driver); -EXPORT_SYMBOL(superhyway_unregister_driver); - -MODULE_LICENSE("GPL"); |