diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/hid/hid-samsung.c | 39 |
1 files changed, 34 insertions, 5 deletions
diff --git a/drivers/hid/hid-samsung.c b/drivers/hid/hid-samsung.c index 07083aa6c19a..ba91d9485ad0 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; |