Ignore this patch, I am working on a better one. On Wed, 2021-01-13 at 22:34 +0500, Ivan Mironov wrote: > There are clones of DualShock 4 that are very similar to the originals, > except of 1) they do not support HID feature report 0x81 and 2) they do > not have any USB Audio interfaces despite they physically have audio > jack. > > Such controllers are working fine with Linux when connected via > Bluetooth, but not when connected via USB. Here is how failed USB > connection attempt looks in log: > > usb 1-5: New USB device found, idVendor=054c, idProduct=05c4, > bcdDevice= 1.00 > usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=0 > usb 1-5: Product: Wireless Controller > usb 1-5: Manufacturer: Sony Computer Entertainment > sony 0003:054C:05C4.0007: failed to retrieve feature report 0x81 with > the DualShock 4 MAC address > sony 0003:054C:05C4.0007: hidraw6: USB HID v81.11 Gamepad [Sony > Computer Entertainment Wireless Controller] on usb-0000:00:14.0-5/input0 > sony 0003:054C:05C4.0007: failed to claim input > > This patch adds support of using feature report 0x12 as a fallback for > Bluetooth MAC address retrieval. Feature report 0x12 also seems to be > used by DS4Windows[1] for all DS4 controllers. > > [1] > https://github.com/Ryochan7/DS4Windows/blob/1b74a4440089f38a24ee2c2483c1d733a0692b8f/DS4Windows/HidLibrary/HidDevice.cs#L479 > > Signed-off-by: Ivan Mironov <mironov.i...@gmail.com> > --- > drivers/hid/hid-sony.c | 72 ++++++++++++++++++++++++++++++------------ > 1 file changed, 52 insertions(+), 20 deletions(-) > > diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c > index e3a557dc9ffd..97df12180e45 100644 > --- a/drivers/hid/hid-sony.c > +++ b/drivers/hid/hid-sony.c > @@ -491,6 +491,7 @@ struct motion_output_report_02 { > > > #define DS4_FEATURE_REPORT_0x02_SIZE 37 > #define DS4_FEATURE_REPORT_0x05_SIZE 41 > +#define DS4_FEATURE_REPORT_0x12_SIZE 16 > #define DS4_FEATURE_REPORT_0x81_SIZE 7 > #define DS4_FEATURE_REPORT_0xA3_SIZE 49 > #define DS4_INPUT_REPORT_0x11_SIZE 78 > @@ -2593,6 +2594,53 @@ static int sony_get_bt_devaddr(struct sony_sc *sc) > return 0; > } > > > +static int sony_get_usb_ds4_devaddr(struct sony_sc *sc) > +{ > + u8 *buf = NULL; > + int ret; > + > + buf = kmalloc(max(DS4_FEATURE_REPORT_0x12_SIZE, > DS4_FEATURE_REPORT_0x81_SIZE), GFP_KERNEL); > + if (!buf) > + return -ENOMEM; > + > + /* > + * The MAC address of a DS4 controller connected via USB can be > + * retrieved with feature report 0x81. The address begins at > + * offset 1. > + */ > + ret = hid_hw_raw_request(sc->hdev, 0x81, buf, > + DS4_FEATURE_REPORT_0x81_SIZE, HID_FEATURE_REPORT, > + HID_REQ_GET_REPORT); > + if (ret == DS4_FEATURE_REPORT_0x81_SIZE) { > + memcpy(sc->mac_address, &buf[1], sizeof(sc->mac_address)); > + goto out_free; > + } > + dbg_hid("%s: hid_hw_raw_request(..., 0x81, ...) returned %d\n", > __func__, ret); > + > + /* > + * Some variants do not implement feature report 0x81 at all. > + * Fortunately, feature report 0x12 also contains the MAC address of > + * a controller. > + */ > + ret = hid_hw_raw_request(sc->hdev, 0x12, buf, > + DS4_FEATURE_REPORT_0x12_SIZE, HID_FEATURE_REPORT, > + HID_REQ_GET_REPORT); > + if (ret == DS4_FEATURE_REPORT_0x12_SIZE) { > + memcpy(sc->mac_address, &buf[1], sizeof(sc->mac_address)); > + goto out_free; > + } > + dbg_hid("%s: hid_hw_raw_request(..., 0x12, ...) returned %d\n", > __func__, ret); > + > + hid_err(sc->hdev, "failed to retrieve feature reports 0x81 and 0x12 > with the DualShock 4 MAC address\n"); > + ret = ret < 0 ? ret : -EINVAL; > + > +out_free: > + > + kfree(buf); > + > + return ret; > +} > + > static int sony_check_add(struct sony_sc *sc) > { > u8 *buf = NULL; > @@ -2613,26 +2661,9 @@ static int sony_check_add(struct sony_sc *sc) > return 0; > } > } else if (sc->quirks & (DUALSHOCK4_CONTROLLER_USB | > DUALSHOCK4_DONGLE)) { > - buf = kmalloc(DS4_FEATURE_REPORT_0x81_SIZE, GFP_KERNEL); > - if (!buf) > - return -ENOMEM; > - > - /* > - * The MAC address of a DS4 controller connected via USB can be > - * retrieved with feature report 0x81. The address begins at > - * offset 1. > - */ > - ret = hid_hw_raw_request(sc->hdev, 0x81, buf, > - DS4_FEATURE_REPORT_0x81_SIZE, > HID_FEATURE_REPORT, > - 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; > - } > - > - memcpy(sc->mac_address, &buf[1], sizeof(sc->mac_address)); > + ret = sony_get_usb_ds4_devaddr(sc); > + if (ret < 0) > + return ret; > > > snprintf(sc->hdev->uniq, sizeof(sc->hdev->uniq), > "%pMR", sc->mac_address); > @@ -2670,6 +2701,7 @@ static int sony_check_add(struct sony_sc *sc) > return 0; > } > > > + dbg_hid("%s: retrieved MAC address: %s\n", __func__, sc->hdev->uniq); > ret = sony_check_add_dev_list(sc); > > > out_free:
