| Message ID | b12d6dce30c1eeb1dfff2b80b64bdedc0803f40b.1640334021.git.sean.wang@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v4,1/3] Bluetooth: mt7921s: Support wake on bluetooth | expand |
Hi Sean, > The driver has to issue the specific command to enable Bluetooth SCO over > the I2S/PCM interface on mt7921s, that is supported since the firmware > with version 20211222191101 was added, and the patch would not cause any > harm even when the old firmware is applied. > > The SCO profile with the patch was tested by setting up a VOIP application, > connected to HFP device, checked telephony function can work normally. > > Co-developed-by: Sean Wang <sean.wang@mediatek.com> > Signed-off-by: Sean Wang <sean.wang@mediatek.com> > Signed-off-by: Mark Chen <mark-yw.chen@mediatek.com> > --- > v2: refine git message and fix typo > v3: > 1. free skb after calling __hci_cmd_sync > 2. make bt_awake as const struct btmtk_sco > v4: > 1. update git message > 2. drop a few redundant error messages > --- > drivers/bluetooth/btmtk.h | 20 +++++++++++ > drivers/bluetooth/btmtksdio.c | 68 +++++++++++++++++++++++++++++++++++ > 2 files changed, 88 insertions(+) > > diff --git a/drivers/bluetooth/btmtk.h b/drivers/bluetooth/btmtk.h > index 2be1d2680ad8..fc57ef09d132 100644 > --- a/drivers/bluetooth/btmtk.h > +++ b/drivers/bluetooth/btmtk.h > @@ -7,8 +7,12 @@ > > #define HCI_WMT_MAX_EVENT_SIZE 64 > > +#define BTMTK_WMT_REG_WRITE 0x1 > #define BTMTK_WMT_REG_READ 0x2 > > +#define MT7921_PINMUX_0 0x70005050 > +#define MT7921_PINMUX_1 0x70005054 > + > enum { > BTMTK_WMT_PATCH_DWNLD = 0x1, > BTMTK_WMT_TEST = 0x2, > @@ -76,6 +80,22 @@ struct btmtk_wakeon { > __le16 wakeup_delay; > } __packed; > > +struct btmtk_sco { > + u8 clock_config; > + u8 transmit_format_config; > + u8 channel_format_config; > + u8 channel_select_config; > +} __packed; > + > +struct reg_write_cmd { > + u8 type; > + u8 rsv; > + u8 num; > + __le32 addr; > + __le32 data; > + __le32 mask; > +} __packed; > + > struct btmtk_hci_wmt_params { > u8 op; > u8 flag; > diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c > index 89bd70651e9e..f6fb82b317de 100644 > --- a/drivers/bluetooth/btmtksdio.c > +++ b/drivers/bluetooth/btmtksdio.c > @@ -830,6 +830,66 @@ static int btsdio_mtk_reg_read(struct hci_dev *hdev, u32 reg, u32 *val) > return err; > } > > +static int btsdio_mtk_reg_write(struct hci_dev *hdev, u32 reg, u32 val, u32 mask) > +{ > + struct btmtk_hci_wmt_params wmt_params; > + struct reg_write_cmd reg_write = { > + .type = 1, > + .num = 1, > + .addr = cpu_to_le32(reg), > + .data = cpu_to_le32(val), > + .mask = cpu_to_le32(mask), > + }; Maybe a good idea to make this const as well. > + int err, status; > + > + wmt_params.op = BTMTK_WMT_REGISTER; > + wmt_params.flag = BTMTK_WMT_REG_WRITE; > + wmt_params.dlen = sizeof(reg_write); > + wmt_params.data = ®_write; > + wmt_params.status = &status; > + > + err = mtk_hci_wmt_sync(hdev, &wmt_params); > + if (err < 0) > + bt_dev_err(hdev, "Failed to write reg(%d)", err); The please “..reg (%d)” as you have for the other error message. > + > + return err; > +} > + > +static int btsdio_mtk_sco_setting(struct hci_dev *hdev) > +{ > + const struct btmtk_sco sco_setting = { > + .clock_config = 0x49, > + .channel_format_config = 0x80, > + }; > + struct sk_buff *skb; > + u32 val; > + int err; > + > + /* Enable SCO over I2S/PCM for MediaTek chipset */ > + skb = __hci_cmd_sync(hdev, 0xfc72, sizeof(sco_setting), > + &sco_setting, HCI_CMD_TIMEOUT); > + if (IS_ERR(skb)) > + return PTR_ERR(skb); > + > + kfree_skb(skb); > + > + err = btsdio_mtk_reg_read(hdev, MT7921_PINMUX_0, &val); > + if (err < 0) > + return err; > + > + val |= 0x11000000; > + err = btsdio_mtk_reg_write(hdev, MT7921_PINMUX_0, val, ~0); > + if (err < 0) > + return err; > + > + err = btsdio_mtk_reg_read(hdev, MT7921_PINMUX_1, &val); > + if (err < 0) > + return err; > + > + val |= 0x00000101; > + return btsdio_mtk_reg_write(hdev, MT7921_PINMUX_1, val, ~0); > +} > + > static int btmtksdio_setup(struct hci_dev *hdev) > { > struct btmtksdio_dev *bdev = hci_get_drvdata(hdev); > @@ -862,6 +922,14 @@ static int btmtksdio_setup(struct hci_dev *hdev) > err = mt79xx_setup(hdev, fwname); > if (err < 0) > return err; > + > + /* Enable SCO over I2S/PCM */ > + err = btsdio_mtk_sco_setting(hdev); > + if (err < 0) { > + bt_dev_err(hdev, "Failed to enable SCO setting (%d)", err); > + return err; > + } > + Is this really a failure or could the chip continue to operate? It just means it falls back to SCO over HCI? > break; > case 0x7663: > case 0x7668: Regards Marcel
diff --git a/drivers/bluetooth/btmtk.h b/drivers/bluetooth/btmtk.h index 2be1d2680ad8..fc57ef09d132 100644 --- a/drivers/bluetooth/btmtk.h +++ b/drivers/bluetooth/btmtk.h @@ -7,8 +7,12 @@ #define HCI_WMT_MAX_EVENT_SIZE 64 +#define BTMTK_WMT_REG_WRITE 0x1 #define BTMTK_WMT_REG_READ 0x2 +#define MT7921_PINMUX_0 0x70005050 +#define MT7921_PINMUX_1 0x70005054 + enum { BTMTK_WMT_PATCH_DWNLD = 0x1, BTMTK_WMT_TEST = 0x2, @@ -76,6 +80,22 @@ struct btmtk_wakeon { __le16 wakeup_delay; } __packed; +struct btmtk_sco { + u8 clock_config; + u8 transmit_format_config; + u8 channel_format_config; + u8 channel_select_config; +} __packed; + +struct reg_write_cmd { + u8 type; + u8 rsv; + u8 num; + __le32 addr; + __le32 data; + __le32 mask; +} __packed; + struct btmtk_hci_wmt_params { u8 op; u8 flag; diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c index 89bd70651e9e..f6fb82b317de 100644 --- a/drivers/bluetooth/btmtksdio.c +++ b/drivers/bluetooth/btmtksdio.c @@ -830,6 +830,66 @@ static int btsdio_mtk_reg_read(struct hci_dev *hdev, u32 reg, u32 *val) return err; } +static int btsdio_mtk_reg_write(struct hci_dev *hdev, u32 reg, u32 val, u32 mask) +{ + struct btmtk_hci_wmt_params wmt_params; + struct reg_write_cmd reg_write = { + .type = 1, + .num = 1, + .addr = cpu_to_le32(reg), + .data = cpu_to_le32(val), + .mask = cpu_to_le32(mask), + }; + int err, status; + + wmt_params.op = BTMTK_WMT_REGISTER; + wmt_params.flag = BTMTK_WMT_REG_WRITE; + wmt_params.dlen = sizeof(reg_write); + wmt_params.data = ®_write; + wmt_params.status = &status; + + err = mtk_hci_wmt_sync(hdev, &wmt_params); + if (err < 0) + bt_dev_err(hdev, "Failed to write reg(%d)", err); + + return err; +} + +static int btsdio_mtk_sco_setting(struct hci_dev *hdev) +{ + const struct btmtk_sco sco_setting = { + .clock_config = 0x49, + .channel_format_config = 0x80, + }; + struct sk_buff *skb; + u32 val; + int err; + + /* Enable SCO over I2S/PCM for MediaTek chipset */ + skb = __hci_cmd_sync(hdev, 0xfc72, sizeof(sco_setting), + &sco_setting, HCI_CMD_TIMEOUT); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + kfree_skb(skb); + + err = btsdio_mtk_reg_read(hdev, MT7921_PINMUX_0, &val); + if (err < 0) + return err; + + val |= 0x11000000; + err = btsdio_mtk_reg_write(hdev, MT7921_PINMUX_0, val, ~0); + if (err < 0) + return err; + + err = btsdio_mtk_reg_read(hdev, MT7921_PINMUX_1, &val); + if (err < 0) + return err; + + val |= 0x00000101; + return btsdio_mtk_reg_write(hdev, MT7921_PINMUX_1, val, ~0); +} + static int btmtksdio_setup(struct hci_dev *hdev) { struct btmtksdio_dev *bdev = hci_get_drvdata(hdev); @@ -862,6 +922,14 @@ static int btmtksdio_setup(struct hci_dev *hdev) err = mt79xx_setup(hdev, fwname); if (err < 0) return err; + + /* Enable SCO over I2S/PCM */ + err = btsdio_mtk_sco_setting(hdev); + if (err < 0) { + bt_dev_err(hdev, "Failed to enable SCO setting (%d)", err); + return err; + } + break; case 0x7663: case 0x7668: