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path: root/drivers/hid/hid-samsung.c
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Diffstat (limited to 'drivers/hid/hid-samsung.c')
-rw-r--r--drivers/hid/hid-samsung.c43
1 files changed, 36 insertions, 7 deletions
diff --git a/drivers/hid/hid-samsung.c b/drivers/hid/hid-samsung.c
index 07083aa6c19..5b222eed069 100644
--- a/drivers/hid/hid-samsung.c
+++ b/drivers/hid/hid-samsung.c
@@ -25,25 +25,48 @@
/*
* Samsung IrDA remote controller (reports as Cypress USB Mouse).
*
+ * There are several variants for 0419:0001:
+ *
+ * 1. 184 byte report descriptor
* 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.
+ *
+ * 2. 203 byte report descriptor
+ * Report #4 has an array field with logical range 0..18 instead of 1..15.
+ *
+ * 3. 135 byte report descriptor
+ * Report #4 has an array field with logical range 0..17 instead of 1..14.
*/
static void samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int rsize)
{
- if (rsize >= 182 && rdesc[175] == 0x25 && rdesc[176] == 0x40 &&
+ if (rsize == 184 && 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");
+ dev_info(&hdev->dev, "fixing up Samsung IrDA %d byte report "
+ "descriptor\n", 184);
rdesc[176] = 0xff;
rdesc[178] = 0x08;
rdesc[180] = 0x06;
rdesc[182] = 0x42;
+ } else
+ if (rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 &&
+ rdesc[194] == 0x25 && rdesc[195] == 0x12) {
+ dev_info(&hdev->dev, "fixing up Samsung IrDA %d byte report "
+ "descriptor\n", 203);
+ rdesc[193] = 0x1;
+ rdesc[195] = 0xf;
+ } else
+ if (rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 &&
+ rdesc[126] == 0x25 && rdesc[127] == 0x11) {
+ dev_info(&hdev->dev, "fixing up Samsung IrDA %d byte report "
+ "descriptor\n", 135);
+ rdesc[125] = 0x1;
+ rdesc[127] = 0xe;
}
}
@@ -51,6 +74,7 @@ static int samsung_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
int ret;
+ unsigned int cmask = HID_CONNECT_DEFAULT;
ret = hid_parse(hdev);
if (ret) {
@@ -58,8 +82,13 @@ static int samsung_probe(struct hid_device *hdev,
goto err_free;
}
- ret = hid_hw_start(hdev, (HID_CONNECT_DEFAULT & ~HID_CONNECT_HIDINPUT) |
- HID_CONNECT_HIDDEV_FORCE);
+ if (hdev->rsize == 184) {
+ /* disable hidinput, force hiddev */
+ cmask = (cmask & ~HID_CONNECT_HIDINPUT) |
+ HID_CONNECT_HIDDEV_FORCE;
+ }
+
+ ret = hid_hw_start(hdev, cmask);
if (ret) {
dev_err(&hdev->dev, "hw start failed\n");
goto err_free;
@@ -83,12 +112,12 @@ static struct hid_driver samsung_driver = {
.probe = samsung_probe,
};
-static int samsung_init(void)
+static int __init samsung_init(void)
{
return hid_register_driver(&samsung_driver);
}
-static void samsung_exit(void)
+static void __exit samsung_exit(void)
{
hid_unregister_driver(&samsung_driver);
}