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authorHans de Goede <hdegoede@redhat.com>2019-04-20 13:22:02 +0200
committerBenjamin Tissoires <benjamin.tissoires@redhat.com>2019-04-23 18:02:02 +0200
commit6d3c3f031f43eb4e70b8c1a2352e6a70d0085cb4 (patch)
tree132c3eb1c464bf3263071594764cb5393f284649 /drivers/hid
parente316aa6e545f0bae82776317bf08ced79a68047d (diff)
downloadlinux-6d3c3f031f43eb4e70b8c1a2352e6a70d0085cb4.tar.bz2
HID: logitech-dj: make appending of the HID++ descriptors conditional
Make the appending of the HID++ descriptors in logi_dj_ll_parse conditional. This is a preparation patch for adding support for the Logitech mini Bluetooth receiver in HID proxy mode (its default mode), where some of the paired devices may not be Logitech devices and thus may not be HID++ capable. This uses a fake bit 63 in reports_supported, which is changed from an u32 to an u64 for this. Bits <= 31 are not usable for this because that would cause a behavioral change in logi_dj_recv_forward_null_report. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-logitech-dj.c35
1 files changed, 21 insertions, 14 deletions
diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c
index e30ed320207b..154cc37ed8fd 100644
--- a/drivers/hid/hid-logitech-dj.c
+++ b/drivers/hid/hid-logitech-dj.c
@@ -100,6 +100,8 @@
#define POWER_KEYS BIT(4)
#define MEDIA_CENTER BIT(8)
#define KBD_LEDS BIT(14)
+/* Fake (bitnr > NUMBER_OF_HID_REPORTS) bit to track HID++ capability */
+#define HIDPP BIT_ULL(63)
/* HID++ Device Connected Notification */
#define REPORT_TYPE_NOTIF_DEVICE_CONNECTED 0x41
@@ -162,7 +164,7 @@ struct dj_receiver_dev {
struct dj_device {
struct hid_device *hdev;
struct dj_receiver_dev *dj_receiver_dev;
- u32 reports_supported;
+ u64 reports_supported;
u8 device_index;
};
@@ -177,7 +179,7 @@ struct dj_workitem {
u8 device_type;
u8 quad_id_msb;
u8 quad_id_lsb;
- u32 reports_supported;
+ u64 reports_supported;
};
/* Keyboard descriptor (1) */
@@ -805,6 +807,7 @@ static void logi_dj_recv_queue_notification(struct dj_receiver_dev *djrcv_dev,
workitem.reports_supported = get_unaligned_le32(
dj_report->report_params +
DEVICE_PAIRED_RF_REPORT_TYPE);
+ workitem.reports_supported |= HIDPP;
if (dj_report->report_type == REPORT_TYPE_NOTIF_DEVICE_UNPAIRED)
workitem.type = WORKITEM_TYPE_UNPAIRED;
break;
@@ -828,10 +831,11 @@ static void logi_hidpp_dev_conn_notif_equad(struct hidpp_event *hidpp_report,
switch (workitem->device_type) {
case REPORT_TYPE_KEYBOARD:
workitem->reports_supported |= STD_KEYBOARD | MULTIMEDIA |
- POWER_KEYS | MEDIA_CENTER;
+ POWER_KEYS | MEDIA_CENTER |
+ HIDPP;
break;
case REPORT_TYPE_MOUSE:
- workitem->reports_supported |= STD_MOUSE;
+ workitem->reports_supported |= STD_MOUSE | HIDPP;
break;
}
}
@@ -846,13 +850,13 @@ static void logi_hidpp_dev_conn_notif_27mhz(struct hid_device *hdev,
case 1: /* Index 1 is always a mouse */
case 2: /* Index 2 is always a mouse */
workitem->device_type = HIDPP_DEVICE_TYPE_MOUSE;
- workitem->reports_supported |= STD_MOUSE;
+ workitem->reports_supported |= STD_MOUSE | HIDPP;
break;
case 3: /* Index 3 is always the keyboard */
case 4: /* Index 4 is used for an optional separate numpad */
workitem->device_type = HIDPP_DEVICE_TYPE_KEYBOARD;
workitem->reports_supported |= STD_KEYBOARD | MULTIMEDIA |
- POWER_KEYS;
+ POWER_KEYS | HIDPP;
break;
default:
hid_warn(hdev, "%s: unexpected device-index %d", __func__,
@@ -1249,14 +1253,14 @@ static int logi_dj_ll_parse(struct hid_device *hid)
return -ENOMEM;
if (djdev->reports_supported & STD_KEYBOARD) {
- dbg_hid("%s: sending a kbd descriptor, reports_supported: %x\n",
+ dbg_hid("%s: sending a kbd descriptor, reports_supported: %llx\n",
__func__, djdev->reports_supported);
rdcat(rdesc, &rsize, kbd_descriptor, sizeof(kbd_descriptor));
}
if (djdev->reports_supported & STD_MOUSE) {
- dbg_hid("%s: sending a mouse descriptor, reports_supported: "
- "%x\n", __func__, djdev->reports_supported);
+ 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)
rdcat(rdesc, &rsize, mse_high_res_descriptor,
sizeof(mse_high_res_descriptor));
@@ -1269,29 +1273,32 @@ static int logi_dj_ll_parse(struct hid_device *hid)
}
if (djdev->reports_supported & MULTIMEDIA) {
- dbg_hid("%s: sending a multimedia report descriptor: %x\n",
+ dbg_hid("%s: sending a multimedia report descriptor: %llx\n",
__func__, djdev->reports_supported);
rdcat(rdesc, &rsize, consumer_descriptor, sizeof(consumer_descriptor));
}
if (djdev->reports_supported & POWER_KEYS) {
- dbg_hid("%s: sending a power keys report descriptor: %x\n",
+ dbg_hid("%s: sending a power keys report descriptor: %llx\n",
__func__, djdev->reports_supported);
rdcat(rdesc, &rsize, syscontrol_descriptor, sizeof(syscontrol_descriptor));
}
if (djdev->reports_supported & MEDIA_CENTER) {
- dbg_hid("%s: sending a media center report descriptor: %x\n",
+ dbg_hid("%s: sending a media center report descriptor: %llx\n",
__func__, djdev->reports_supported);
rdcat(rdesc, &rsize, media_descriptor, sizeof(media_descriptor));
}
if (djdev->reports_supported & KBD_LEDS) {
- dbg_hid("%s: need to send kbd leds report descriptor: %x\n",
+ dbg_hid("%s: need to send kbd leds report descriptor: %llx\n",
__func__, djdev->reports_supported);
}
- rdcat(rdesc, &rsize, hidpp_descriptor, sizeof(hidpp_descriptor));
+ if (djdev->reports_supported & HIDPP) {
+ rdcat(rdesc, &rsize, hidpp_descriptor,
+ sizeof(hidpp_descriptor));
+ }
retval = hid_parse_report(hid, rdesc, rsize);
kfree(rdesc);