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HID: logitech-dj: Fix 064d:c52f receiver support
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The c52f nano receiver is a mouse only receiver. This means that it needs
some special handling compared to the c534 nano receiver:

1) It sends unnumbered mouse reports with a size of 8 bytes, so we need
   to extend the unnumbered mouse report handling to support reports upto
   8 bytes large

2) It mouse reports have the same high-resolution format as those from the
   gaming mouse receivers

3) It can report consumer/multimedia buttons on its second interface, since
   this is a mouse-only receiver these must be forwarded to the mouse child
   device and not to the keyboard child-device (which will not exist)

Link: https://bugzilla.kernel.org/show_bug.cgi?id=203619
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
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Hans de Goede authored and Benjamin Tissoires committed Jun 5, 2019
1 parent f9482da commit 3ed224e
Showing 1 changed file with 27 additions and 15 deletions.
42 changes: 27 additions & 15 deletions drivers/hid/hid-logitech-dj.c
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Original file line number Diff line number Diff line change
Expand Up @@ -128,6 +128,7 @@ enum recvr_type {
recvr_type_dj,
recvr_type_hidpp,
recvr_type_gaming_hidpp,
recvr_type_mouse_only,
recvr_type_27mhz,
recvr_type_bluetooth,
};
Expand Down Expand Up @@ -879,9 +880,12 @@ static void logi_dj_recv_queue_notification(struct dj_receiver_dev *djrcv_dev,
schedule_work(&djrcv_dev->work);
}

static void logi_hidpp_dev_conn_notif_equad(struct hidpp_event *hidpp_report,
static void logi_hidpp_dev_conn_notif_equad(struct hid_device *hdev,
struct hidpp_event *hidpp_report,
struct dj_workitem *workitem)
{
struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);

workitem->type = WORKITEM_TYPE_PAIRED;
workitem->device_type = hidpp_report->params[HIDPP_PARAM_DEVICE_INFO] &
HIDPP_DEVICE_TYPE_MASK;
Expand All @@ -895,6 +899,8 @@ static void logi_hidpp_dev_conn_notif_equad(struct hidpp_event *hidpp_report,
break;
case REPORT_TYPE_MOUSE:
workitem->reports_supported |= STD_MOUSE | HIDPP;
if (djrcv_dev->type == recvr_type_mouse_only)
workitem->reports_supported |= MULTIMEDIA;
break;
}
}
Expand Down Expand Up @@ -938,7 +944,7 @@ static void logi_hidpp_recv_queue_notif(struct hid_device *hdev,
case 0x01:
device_type = "Bluetooth";
/* Bluetooth connect packet contents is the same as (e)QUAD */
logi_hidpp_dev_conn_notif_equad(hidpp_report, &workitem);
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
if (!(hidpp_report->params[HIDPP_PARAM_DEVICE_INFO] &
HIDPP_MANUFACTURER_MASK)) {
hid_info(hdev, "Non Logitech device connected on slot %d\n",
Expand All @@ -952,18 +958,18 @@ static void logi_hidpp_recv_queue_notif(struct hid_device *hdev,
break;
case 0x03:
device_type = "QUAD or eQUAD";
logi_hidpp_dev_conn_notif_equad(hidpp_report, &workitem);
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
break;
case 0x04:
device_type = "eQUAD step 4 DJ";
logi_hidpp_dev_conn_notif_equad(hidpp_report, &workitem);
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
break;
case 0x05:
device_type = "DFU Lite";
break;
case 0x06:
device_type = "eQUAD step 4 Lite";
logi_hidpp_dev_conn_notif_equad(hidpp_report, &workitem);
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
break;
case 0x07:
device_type = "eQUAD step 4 Gaming";
Expand All @@ -973,11 +979,11 @@ static void logi_hidpp_recv_queue_notif(struct hid_device *hdev,
break;
case 0x0a:
device_type = "eQUAD nano Lite";
logi_hidpp_dev_conn_notif_equad(hidpp_report, &workitem);
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
break;
case 0x0c:
device_type = "eQUAD Lightspeed";
logi_hidpp_dev_conn_notif_equad(hidpp_report, &workitem);
logi_hidpp_dev_conn_notif_equad(hdev, hidpp_report, &workitem);
workitem.reports_supported |= STD_KEYBOARD;
break;
}
Expand Down Expand Up @@ -1328,7 +1334,8 @@ static int logi_dj_ll_parse(struct hid_device *hid)
if (djdev->reports_supported & STD_MOUSE) {
dbg_hid("%s: sending a mouse descriptor, reports_supported: %llx\n",
__func__, djdev->reports_supported);
if (djdev->dj_receiver_dev->type == recvr_type_gaming_hidpp)
if (djdev->dj_receiver_dev->type == recvr_type_gaming_hidpp ||
djdev->dj_receiver_dev->type == recvr_type_mouse_only)
rdcat(rdesc, &rsize, mse_high_res_descriptor,
sizeof(mse_high_res_descriptor));
else if (djdev->dj_receiver_dev->type == recvr_type_27mhz)
Expand Down Expand Up @@ -1571,15 +1578,19 @@ static int logi_dj_raw_event(struct hid_device *hdev,
data[0] = data[1];
data[1] = 0;
}
/* The 27 MHz mouse-only receiver sends unnumbered mouse data */
/*
* Mouse-only receivers send unnumbered mouse data. The 27 MHz
* receiver uses 6 byte packets, the nano receiver 8 bytes.
*/
if (djrcv_dev->unnumbered_application == HID_GD_MOUSE &&
size == 6) {
u8 mouse_report[7];
size <= 8) {
u8 mouse_report[9];

/* Prepend report id */
mouse_report[0] = REPORT_TYPE_MOUSE;
memcpy(mouse_report + 1, data, 6);
logi_dj_recv_forward_input_report(hdev, mouse_report, 7);
memcpy(mouse_report + 1, data, size);
logi_dj_recv_forward_input_report(hdev, mouse_report,
size + 1);
}

return false;
Expand Down Expand Up @@ -1650,6 +1661,7 @@ static int logi_dj_probe(struct hid_device *hdev,
case recvr_type_dj: no_dj_interfaces = 3; break;
case recvr_type_hidpp: no_dj_interfaces = 2; break;
case recvr_type_gaming_hidpp: no_dj_interfaces = 3; break;
case recvr_type_mouse_only: no_dj_interfaces = 2; break;
case recvr_type_27mhz: no_dj_interfaces = 2; break;
case recvr_type_bluetooth: no_dj_interfaces = 2; break;
}
Expand Down Expand Up @@ -1823,10 +1835,10 @@ static const struct hid_device_id logi_dj_receivers[] = {
{HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2),
.driver_data = recvr_type_dj},
{ /* Logitech Nano (non DJ) receiver */
{ /* Logitech Nano mouse only receiver */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_NANO_RECEIVER),
.driver_data = recvr_type_hidpp},
.driver_data = recvr_type_mouse_only},
{ /* Logitech Nano (non DJ) receiver */
HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_2),
Expand Down

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