Unfortunately, my PS DualShock 4, does not support
the feature 0x81 to get the MAC address. Instead,
use a unique hash to fake a MAC address, so I can
use DS4 to play Retroarch :)
Signed-off-by: Henry Castro <hcvcastro@xxxxxxxxx>
---
> Just for reference if you want to try out if 0x12 works, you can try
> this code. This is from the new driver (ps_get_report is from
> hid-playstation, but you can just use one of the existing hid calls)
> if you wanted to try.
It works with my 2 DS4 =)
if (sc->hdev->bus == BUS_USB) {
buf = kzalloc(DS4_FEATURE_REPORT_PAIRING_INFO_SIZE, GFP_KERNEL);
if (!buf)
return -ENOMEM;
ret = hid_hw_raw_request(sc->hdev, DS4_FEATURE_REPORT_PAIRING_INFO, buf,
DS4_FEATURE_REPORT_PAIRING_INFO_SIZE, HID_FEATURE_REPORT,
HID_REQ_GET_REPORT);
if (ret != DS4_FEATURE_REPORT_PAIRING_INFO_SIZE) {
hid_err(sc->hdev, "Failed to retrieve DualShock4 pairing info:%pe\n", ERR_PTR(ret));
goto out_free;
}
memcpy(sc->mac_address, &buf[1], sizeof(sc->mac_address));
drivers/hid/hid-sony.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c
index 656caa07b25f..e3e9c58887cf 100644
--- a/drivers/hid/hid-sony.c
+++ b/drivers/hid/hid-sony.c
@@ -2641,13 +2641,14 @@ static int sony_check_add(struct sony_sc *sc)
HID_REQ_GET_REPORT);
if (ret != DS4_FEATURE_REPORT_0x81_SIZE) {
- hid_err(sc->hdev, "failed to retrieve feature report 0x81 with the DualShock 4 MAC address\n");
- ret = ret < 0 ? ret : -EINVAL;
- goto out_free;
+ uint32_t hash = full_name_hash(NULL, dev_name(&sc->hdev->dev),
+ strlen(dev_name(&sc->hdev->dev)));
+ hid_warn(sc->hdev, "failed to retrieve feature report 0x81 with the DualShock 4 MAC address\n");
+ memcpy(sc->mac_address, &hash, sizeof(hash));
+ } else {
+ memcpy(sc->mac_address, &buf[1], sizeof(sc->mac_address));
}
- memcpy(sc->mac_address, &buf[1], sizeof(sc->mac_address));
-
snprintf(sc->hdev->uniq, sizeof(sc->hdev->uniq),
"%pMR", sc->mac_address);
} else if ((sc->quirks & SIXAXIS_CONTROLLER_USB) ||
--
2.20.1
