^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * TURBOchannel driver services.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (c) 2005 James Simmons
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2006 Maciej W. Rozycki
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Loosely based on drivers/dio/dio-driver.c and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * drivers/pci/pci-driver.c.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * This file is subject to the terms and conditions of the GNU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * General Public License. See the file "COPYING" in the main
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * directory of this archive for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/tc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * tc_register_driver - register a new TC driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * @drv: the driver structure to register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * Adds the driver structure to the list of registered drivers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * Returns a negative value on error, otherwise 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * If no error occurred, the driver remains registered even if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * no device was claimed during registration.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) int tc_register_driver(struct tc_driver *tdrv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) return driver_register(&tdrv->driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) EXPORT_SYMBOL(tc_register_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * tc_unregister_driver - unregister a TC driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * @drv: the driver structure to unregister
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * Deletes the driver structure from the list of registered TC drivers,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * gives it a chance to clean up by calling its remove() function for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * each device it was responsible for, and marks those devices as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * driverless.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) void tc_unregister_driver(struct tc_driver *tdrv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) driver_unregister(&tdrv->driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) EXPORT_SYMBOL(tc_unregister_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * tc_match_device - tell if a TC device structure has a matching
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * TC device ID structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * @tdrv: the TC driver to earch for matching TC device ID strings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * @tdev: the TC device structure to match against
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * Used by a driver to check whether a TC device present in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * system is in its list of supported devices. Returns the matching
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * tc_device_id structure or %NULL if there is no match.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static const struct tc_device_id *tc_match_device(struct tc_driver *tdrv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct tc_dev *tdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) const struct tc_device_id *id = tdrv->id_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) while (id->name[0] || id->vendor[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) if (strcmp(tdev->name, id->name) == 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) strcmp(tdev->vendor, id->vendor) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) id++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * tc_bus_match - Tell if a device structure has a matching
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * TC device ID structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * @dev: the device structure to match against
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * @drv: the device driver to search for matching TC device ID strings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * Used by a driver to check whether a TC device present in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * system is in its list of supported devices. Returns 1 if there
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * is a match or 0 otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static int tc_bus_match(struct device *dev, struct device_driver *drv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct tc_dev *tdev = to_tc_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct tc_driver *tdrv = to_tc_driver(drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) const struct tc_device_id *id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) id = tc_match_device(tdrv, tdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct bus_type tc_bus_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) .name = "tc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) .match = tc_bus_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) EXPORT_SYMBOL(tc_bus_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static int __init tc_driver_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return bus_register(&tc_bus_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) postcore_initcall(tc_driver_init);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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