diff options
| -rw-r--r-- | drivers/hid/hid-lenovo.c | 53 |
1 files changed, 45 insertions, 8 deletions
diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c index 0320b96ddf24..a56b9e7413ce 100644 --- a/drivers/hid/hid-lenovo.c +++ b/drivers/hid/hid-lenovo.c @@ -1,5 +1,6 @@ /* - * HID driver for Lenovo ThinkPad USB Keyboard with TrackPoint + * HID driver for Lenovo: + * - ThinkPad USB Keyboard with TrackPoint (tpkbd) * * Copyright (c) 2012 Bernhard Seibold */ @@ -39,7 +40,7 @@ static int lenovo_input_mapping_tpkbd(struct hid_device *hdev, struct hid_usage *usage, unsigned long **bit, int *max) { if (usage->hid == (HID_UP_BUTTON | 0x0010)) { - /* mark the device as pointer */ + /* This sub-device contains trackpoint, mark it */ hid_set_drvdata(hdev, (void *)1); map_key_clear(KEY_MICMUTE); return 1; @@ -47,6 +48,19 @@ static int lenovo_input_mapping_tpkbd(struct hid_device *hdev, return 0; } +static int lenovo_input_mapping(struct hid_device *hdev, + struct hid_input *hi, struct hid_field *field, + struct hid_usage *usage, unsigned long **bit, int *max) +{ + switch (hdev->product) { + case USB_DEVICE_ID_LENOVO_TPKBD: + return lenovo_input_mapping_tpkbd(hdev, hi, field, + usage, bit, max); + default: + return 0; + } +} + #undef map_key_clear static int lenovo_features_set_tpkbd(struct hid_device *hdev) @@ -337,6 +351,15 @@ static int lenovo_probe_tpkbd(struct hid_device *hdev) char *name_mute, *name_micmute; int i; + /* + * Only register extra settings against subdevice where input_mapping + * set drvdata to 1, i.e. the trackpoint. + */ + if (!hid_get_drvdata(hdev)) + return 0; + + hid_set_drvdata(hdev, NULL); + /* Validate required reports. */ for (i = 0; i < 4; i++) { if (!hid_validate_values(hdev, HID_FEATURE_REPORT, 4, i, 1)) @@ -409,12 +432,16 @@ static int lenovo_probe(struct hid_device *hdev, goto err; } - if (hid_get_drvdata(hdev)) { - hid_set_drvdata(hdev, NULL); + switch (hdev->product) { + case USB_DEVICE_ID_LENOVO_TPKBD: ret = lenovo_probe_tpkbd(hdev); - if (ret) - goto err_hid; + break; + default: + ret = 0; + break; } + if (ret) + goto err_hid; return 0; err_hid: @@ -427,6 +454,13 @@ static void lenovo_remove_tpkbd(struct hid_device *hdev) { struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev); + /* + * Only the trackpoint half of the keyboard has drvdata and stuff that + * needs unregistering. + */ + if (data_pointer == NULL) + return; + sysfs_remove_group(&hdev->dev.kobj, &lenovo_attr_group_tpkbd); @@ -438,8 +472,11 @@ static void lenovo_remove_tpkbd(struct hid_device *hdev) static void lenovo_remove(struct hid_device *hdev) { - if (hid_get_drvdata(hdev)) + switch (hdev->product) { + case USB_DEVICE_ID_LENOVO_TPKBD: lenovo_remove_tpkbd(hdev); + break; + } hid_hw_stop(hdev); } @@ -454,7 +491,7 @@ MODULE_DEVICE_TABLE(hid, lenovo_devices); static struct hid_driver lenovo_driver = { .name = "lenovo", .id_table = lenovo_devices, - .input_mapping = lenovo_input_mapping_tpkbd, + .input_mapping = lenovo_input_mapping, .probe = lenovo_probe, .remove = lenovo_remove, }; |