Hi Luiz,
Please disregard the patch. We will proceed with the journey using the
latest patchset I provided in the following link
https://lists.infradead.org/pipermail/linux-mediatek/2024-May/079017.html
Sean
On Wed, Apr 17, 2024 at 2:18 PM Luiz Augusto von Dentz
<[email protected]> wrote:
>
> Hi,
>
> On Fri, Apr 12, 2024 at 5:57 AM Hao Qin <[email protected]> wrote:
> >
> > Add support for auto reverting MT7922 during reset process.
>
> Need some more information of what auto reverting means in this
> context and what problem does it solves?
>
> >
> > Signed-off-by: Hao Qin <[email protected]>
> > ---
> > drivers/bluetooth/btusb.c | 14 +++++++++++++-
> > 1 file changed, 13 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
> > index 4c0cc13adb47..0ad96ec8d31d 100644
> > --- a/drivers/bluetooth/btusb.c
> > +++ b/drivers/bluetooth/btusb.c
> > @@ -3032,7 +3032,16 @@ static int btusb_mtk_reset(struct hci_dev *hdev, void *rst_data)
> > usb_kill_anchored_urbs(&data->tx_anchor);
> > mediatek = hci_get_priv(hdev);
> >
> > - if (mediatek->dev_id == 0x7925) {
> > + if (mediatek->dev_id == 0x7922) {
> > + btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val);
> > + val |= 0x00002020;
> > + btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, val);
> > + btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, 0x00010001);
> > + btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val);
> > + val |= BIT(0);
> > + btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, val);
> > + msleep(100);
> > + } else if (mediatek->dev_id == 0x7925) {
> > btusb_mtk_uhw_reg_read(data, MTK_BT_RESET_REG_CONNV3, &val);
> > val |= (1 << 5);
> > btusb_mtk_uhw_reg_write(data, MTK_BT_RESET_REG_CONNV3, val);
> > @@ -3072,6 +3081,9 @@ static int btusb_mtk_reset(struct hci_dev *hdev, void *rst_data)
> > if (err < 0)
> > bt_dev_err(hdev, "Reset timeout");
> >
> > + if (mediatek->dev_id == 0x7922)
> > + btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
> > +
> > btusb_mtk_id_get(data, 0x70010200, &val);
> > if (!val)
> > bt_dev_err(hdev, "Can't get device id, subsys reset fail.");
> > --
> > 2.18.0
> >
>
>
> --
> Luiz Augusto von Dentz
>