| 1 | |
| 2 | |
| 3 | * HID support for Linux
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| 4 | *
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| 5 | * Copyright (c) 1999 Andreas Gal
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| 6 | * Copyright (c) 2000-2005 Vojtech Pavlik <[email protected]>
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| 7 | * Copyright (c) 2005 Michael Haboustak <[email protected]> for Concept2, Inc
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| 8 | * Copyright (c) 2007-2008 Oliver Neukum
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| 9 | * Copyright (c) 2006-2012 Jiri Kosina
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| 10 | * Copyright (c) 2012 Henrik Rydberg
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| 11 |
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| 12 |
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| 13 | |
| 14 |
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| 15 |
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| 16 | #include <linux/module.h>
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| 17 | #include <linux/slab.h>
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| 18 | #include <linux/kernel.h>
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| 19 | #include <linux/unaligned.h>
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| 20 | #include <asm/byteorder.h>
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| 21 |
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| 22 | #include <linux/hid.h>
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| 23 |
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| 24 | static struct hid_driver hid_generic;
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| 25 |
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| 26 | static int __check_hid_generic(struct device_driver *drv, void *data)
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| 27 | {
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| 28 | struct hid_driver *hdrv = to_hid_driver(drv);
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| 29 | struct hid_device *hdev = data;
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| 30 |
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| 31 | if (hdrv == &hid_generic)
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| 32 | return 0;
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| 33 |
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| 34 | return hid_match_device(hdev, hdrv) != NULL;
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| 35 | }
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| 36 |
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| 37 | static bool hid_generic_match(struct hid_device *hdev,
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| 38 | bool ignore_special_driver)
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| 39 | {
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| 40 | if (ignore_special_driver)
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| 41 | return true;
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| 42 |
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| 43 | if (hdev->quirks & HID_QUIRK_IGNORE_SPECIAL_DRIVER)
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| 44 | return true;
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| 45 |
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| 46 | if (hdev->quirks & HID_QUIRK_HAVE_SPECIAL_DRIVER)
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| 47 | return false;
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| 48 |
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| 49 | |
| 50 | * If any other driver wants the device, leave the device to this other
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| 51 | * driver.
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| 52 |
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| 53 | if (bus_for_each_drv(&hid_bus_type, NULL, hdev, __check_hid_generic))
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| 54 | return false;
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| 55 |
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| 56 | return true;
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| 57 | }
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| 58 |
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| 59 | static int hid_generic_probe(struct hid_device *hdev,
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| 60 | const struct hid_device_id *id)
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| 61 | {
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| 62 | int ret;
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| 63 |
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| 64 | hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
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| 65 |
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| 66 | ret = hid_parse(hdev);
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| 67 | if (ret)
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| 68 | return ret;
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| 69 |
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| 70 | return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
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| 71 | }
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| 72 |
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| 73 | static int hid_generic_reset_resume(struct hid_device *hdev)
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| 74 | {
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| 75 | if (hdev->claimed & HID_CLAIMED_INPUT)
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| 76 | hidinput_reset_resume(hdev);
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| 77 |
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| 78 | return 0;
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| 79 | }
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| 80 |
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| 81 | static const struct hid_device_id hid_table[] = {
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| 82 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, HID_ANY_ID, HID_ANY_ID) },
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| 83 | { }
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| 84 | };
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| 85 | MODULE_DEVICE_TABLE(hid, hid_table);
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| 86 |
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| 87 | static struct hid_driver hid_generic = {
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| 88 | .name = "hid-generic",
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| 89 | .id_table = hid_table,
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| 90 | .match = hid_generic_match,
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| 91 | .probe = hid_generic_probe,
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| 92 | .reset_resume = hid_generic_reset_resume,
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| 93 | };
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| 94 | module_hid_driver(hid_generic);
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| 95 |
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| 96 | MODULE_AUTHOR("Henrik Rydberg");
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| 97 | MODULE_DESCRIPTION("HID generic driver");
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| 98 | MODULE_LICENSE("GPL");
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