HID: sony: Send ds4 output reports on output end-point

Add a CRC value to each output report. This removes the need for the
'no output reports on interrupt end-point' quirk.

Signed-off-by: Roderick Colenbrander <roderick.colenbrander@sony.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 11 insertions, 9 deletions

diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c
index 34988ce9434a..24f7d1937264 100644
--- a/drivers/hid/hid-sony.c
+++ b/drivers/hid/hid-sony.c
@@ -1895,7 +1895,7 @@ static void dualshock4_send_output_report(struct sony_sc *sc)
         } else {
                 memset(buf, 0, DS4_OUTPUT_REPORT_0x11_SIZE);
                 buf[0] = 0x11;
-                buf[1] = 0x80;
+                buf[1] = 0xC0; /* HID + CRC */
                 buf[3] = 0x0F;
                 offset = 6;
         }
@@ -1922,9 +1922,16 @@ static void dualshock4_send_output_report(struct sony_sc *sc)
 
         if (sc->quirks & DUALSHOCK4_CONTROLLER_USB)
                 hid_hw_output_report(hdev, buf, DS4_OUTPUT_REPORT_0x05_SIZE);
-        else
-                hid_hw_raw_request(hdev, 0x11, buf, DS4_OUTPUT_REPORT_0x11_SIZE,
-                                HID_OUTPUT_REPORT, HID_REQ_SET_REPORT);
+        else {
+                /* CRC generation */
+                u8 bthdr = 0xA2;
+                u32 crc;
+
+                crc = crc32_le(0xFFFFFFFF, &bthdr, 1);
+                crc = ~crc32_le(crc, buf, DS4_OUTPUT_REPORT_0x11_SIZE-4);
+                put_unaligned_le32(crc, &buf[74]);
+                hid_hw_output_report(hdev, buf, DS4_OUTPUT_REPORT_0x11_SIZE);
+        }
 }
 
 static void motion_send_output_report(struct sony_sc *sc)
@@ -2378,11 +2385,6 @@ static int sony_input_configured(struct hid_device *hdev,
                 sony_init_output_report(sc, sixaxis_send_output_report);
         } else if (sc->quirks & DUALSHOCK4_CONTROLLER) {
                 if (sc->quirks & DUALSHOCK4_CONTROLLER_BT) {
-                        /*
-                         * The DualShock 4 wants output reports sent on the ctrl
-                         * endpoint when connected via Bluetooth.
-                         */
-                        hdev->quirks |= HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP;
                         ret = dualshock4_set_operational_bt(hdev);
                         if (ret < 0) {
                                 hid_err(hdev, "failed to set the Dualshock 4 operational mode\n");