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author | Jiri Slaby <jirislaby@gmail.com> | 2008-06-25 20:31:48 (GMT) |
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committer | Jiri Kosina <jkosina@suse.cz> | 2008-10-14 21:50:54 (GMT) |
commit | 980a3da6acdd577ee3ae192e868dc52fe4b7f2e5 (patch) | |
tree | 420ca3c79bdca00967afe3683ff8acf11196174c /drivers/hid/hid-samsung.c | |
parent | 949f8fef77186c7361d22e1ea6f42c76ceda42b0 (diff) | |
download | linux-fsl-qoriq-980a3da6acdd577ee3ae192e868dc52fe4b7f2e5.tar.xz |
HID: move samsung quirks
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-samsung.c')
-rw-r--r-- | drivers/hid/hid-samsung.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/drivers/hid/hid-samsung.c b/drivers/hid/hid-samsung.c new file mode 100644 index 0000000..8771bfa --- /dev/null +++ b/drivers/hid/hid-samsung.c @@ -0,0 +1,101 @@ +/* + * HID driver for some samsung "special" devices + * + * Copyright (c) 1999 Andreas Gal + * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> + * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc + * Copyright (c) 2006-2007 Jiri Kosina + * Copyright (c) 2007 Paul Walmsley + * Copyright (c) 2008 Jiri Slaby + */ + +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + */ + +#include <linux/device.h> +#include <linux/hid.h> +#include <linux/module.h> + +#include "hid-ids.h" + +/* + * Samsung IrDA remote controller (reports as Cypress USB Mouse). + * + * Vendor specific report #4 has a size of 48 bit, + * and therefore is not accepted when inspecting the descriptors. + * As a workaround we reinterpret the report as: + * Variable type, count 6, size 8 bit, log. maximum 255 + * The burden to reconstruct the data is moved into user space. + */ +static void samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc, + unsigned int rsize) +{ + if (rsize >= 182 && rdesc[175] == 0x25 && rdesc[176] == 0x40 && + rdesc[177] == 0x75 && rdesc[178] == 0x30 && + rdesc[179] == 0x95 && rdesc[180] == 0x01 && + rdesc[182] == 0x40) { + dev_info(&hdev->dev, "fixing up Samsung IrDA report " + "descriptor\n"); + rdesc[176] = 0xff; + rdesc[178] = 0x08; + rdesc[180] = 0x06; + rdesc[182] = 0x42; + } +} + +static int samsung_probe(struct hid_device *hdev, + const struct hid_device_id *id) +{ + int ret; + + hdev->quirks |= HID_QUIRK_HIDDEV | HID_QUIRK_IGNORE_HIDINPUT; + + ret = hid_parse(hdev); + if (ret) { + dev_err(&hdev->dev, "parse failed\n"); + goto err_free; + } + + ret = hid_hw_start(hdev); + if (ret) { + dev_err(&hdev->dev, "hw start failed\n"); + goto err_free; + } + + return 0; +err_free: + return ret; +} + +static const struct hid_device_id samsung_devices[] = { + { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) }, + { } +}; +MODULE_DEVICE_TABLE(hid, samsung_devices); + +static struct hid_driver samsung_driver = { + .name = "samsung", + .id_table = samsung_devices, + .report_fixup = samsung_report_fixup, + .probe = samsung_probe, +}; + +static int samsung_init(void) +{ + return hid_register_driver(&samsung_driver); +} + +static void samsung_exit(void) +{ + hid_unregister_driver(&samsung_driver); +} + +module_init(samsung_init); +module_exit(samsung_exit); +MODULE_LICENSE("GPL"); + +HID_COMPAT_LOAD_DRIVER(samsung); |