[PATCH v1 10/10] Bluetooth: btmtksdio: add MT7921s Bluetooth support

From: sean.wang
Date: Fri Oct 08 2021 - 18:22:04 EST

From: Sean Wang <sean.wang@xxxxxxxxxxxx>

add MT7921s Bluetooth support

Co-developed-by: Mark-yw Chen <mark-yw.chen@xxxxxxxxxxxx>
Signed-off-by: Mark-yw Chen <mark-yw.chen@xxxxxxxxxxxx>
Signed-off-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
---
drivers/bluetooth/btmtk.h | 1 +
drivers/bluetooth/btmtksdio.c | 141 ++++++++++++++++++++++++++++++++--
2 files changed, 134 insertions(+), 8 deletions(-)

diff --git a/drivers/bluetooth/btmtk.h b/drivers/bluetooth/btmtk.h
index 18f43c641b3b..d6913657d552 100644
--- a/drivers/bluetooth/btmtk.h
+++ b/drivers/bluetooth/btmtk.h
@@ -14,6 +14,7 @@ enum {
BTMTK_WMT_HIF = 0x4,
BTMTK_WMT_FUNC_CTRL = 0x6,
BTMTK_WMT_RST = 0x7,
+ BTMTK_WMT_REGISTER = 0x8,
BTMTK_WMT_SEMAPHORE = 0x17,
};

diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
index 3266c5d83cae..86568fba1d2b 100644
--- a/drivers/bluetooth/btmtksdio.c
+++ b/drivers/bluetooth/btmtksdio.c
@@ -37,14 +37,22 @@ static bool enable_autosuspend;

struct btmtksdio_data {
const char *fwname;
+ u16 chipid;
};

static const struct btmtksdio_data mt7663_data = {
.fwname = FIRMWARE_MT7663,
+ .chipid = 0x7663,
};

static const struct btmtksdio_data mt7668_data = {
.fwname = FIRMWARE_MT7668,
+ .chipid = 0x7668,
+};
+
+static const struct btmtksdio_data mt7961_data = {
+ .fwname = FIRMWARE_MT7961,
+ .chipid = 0x7921,
};

static const struct sdio_device_id btmtksdio_table[] = {
@@ -52,6 +60,8 @@ static const struct sdio_device_id btmtksdio_table[] = {
.driver_data = (kernel_ulong_t)&mt7663_data },
{SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, SDIO_DEVICE_ID_MEDIATEK_MT7668),
.driver_data = (kernel_ulong_t)&mt7668_data },
+ {SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, SDIO_DEVICE_ID_MEDIATEK_MT7961),
+ .driver_data = (kernel_ulong_t)&mt7961_data },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(sdio, btmtksdio_table);
@@ -194,6 +204,20 @@ static int mtk_hci_wmt_sync(struct hci_dev *hdev,
else
status = BTMTK_WMT_ON_UNDONE;
break;
+ case BTMTK_WMT_PATCH_DWNLD:
+ if (wmt_evt->whdr.flag == 2)
+ status = BTMTK_WMT_PATCH_DONE;
+ else if (wmt_evt->whdr.flag == 1)
+ status = BTMTK_WMT_PATCH_PROGRESS;
+ else
+ status = BTMTK_WMT_PATCH_UNDONE;
+ break;
+ case BTMTK_WMT_REGISTER:
+ if (bdev->evt_skb->len == 18) {
+ memcpy(&status, bdev->evt_skb->data + 14, sizeof(u32));
+ status = le32_to_cpu(status);
+ }
+ break;
}

if (wmt_params->status)
@@ -634,20 +658,14 @@ static int btmtksdio_func_query(struct hci_dev *hdev)
return status;
}

-static int btmtksdio_setup(struct hci_dev *hdev)
+static int mt76xx_setup(struct hci_dev *hdev, const char *fwname)
{
- struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
struct btmtk_hci_wmt_params wmt_params;
- ktime_t calltime, delta, rettime;
struct btmtk_tci_sleep tci_sleep;
- unsigned long long duration;
struct sk_buff *skb;
int err, status;
u8 param = 0x1;

- calltime = ktime_get();
- bdev->hw_tx_ready = true;
-
/* Query whether the firmware is already download */
wmt_params.op = BTMTK_WMT_SEMAPHORE;
wmt_params.flag = 1;
@@ -667,7 +685,7 @@ static int btmtksdio_setup(struct hci_dev *hdev)
}

/* Setup a firmware which the device definitely requires */
- err = btmtk_setup_firmware(hdev, bdev->data->fwname, mtk_hci_wmt_sync);
+ err = btmtk_setup_firmware(hdev, fwname, mtk_hci_wmt_sync);
if (err < 0)
return err;

@@ -719,6 +737,113 @@ static int btmtksdio_setup(struct hci_dev *hdev)
}
kfree_skb(skb);

+ return 0;
+}
+
+static int mt79xx_setup(struct hci_dev *hdev, const char *fwname)
+{
+ struct btmtk_hci_wmt_params wmt_params;
+ u8 param = 0x1;
+ int err;
+
+ err = btmtk_setup_firmware_79xx(hdev, fwname, mtk_hci_wmt_sync);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to setup 79xx firmware (%d)", err);
+ return err;
+ }
+
+ /* Enable Bluetooth protocol */
+ wmt_params.op = BTMTK_WMT_FUNC_CTRL;
+ wmt_params.flag = 0;
+ wmt_params.dlen = sizeof(param);
+ wmt_params.data = &param;
+ wmt_params.status = NULL;
+
+ err = mtk_hci_wmt_sync(hdev, &wmt_params);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
+ return err;
+ }
+
+ return err;
+}
+
+static int btsdio_mtk_reg_read(struct hci_dev *hdev, u32 reg, u32 *val)
+{
+ struct btmtk_hci_wmt_params wmt_params;
+ struct reg_read_cmd {
+ u8 type;
+ u8 rsv;
+ u8 num;
+ __le32 addr;
+ } __packed reg_read = {
+ .type = 1,
+ .num = 1,
+ };
+
+ int err, status;
+
+ reg_read.addr = cpu_to_le32(reg);
+ wmt_params.op = BTMTK_WMT_REGISTER;
+ wmt_params.flag = 2;
+ wmt_params.dlen = 7;
+ wmt_params.data = &reg_read;
+ wmt_params.status = &status;
+
+ err = mtk_hci_wmt_sync(hdev, &wmt_params);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to read reg(%d)", err);
+ return err;
+ }
+
+ *val = status;
+
+ return err;
+}
+
+static int btmtksdio_setup(struct hci_dev *hdev)
+{
+ struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
+ ktime_t calltime, delta, rettime;
+ unsigned long long duration;
+ char fwname[64];
+ int err, dev_id;
+ u32 fw_version = 0;
+
+ calltime = ktime_get();
+ bdev->hw_tx_ready = true;
+
+ switch (bdev->data->chipid) {
+ case 0x7921:
+ err = btsdio_mtk_reg_read(hdev, 0x70010200, &dev_id);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to get device id (%d)", err);
+ return err;
+ }
+
+ err = btsdio_mtk_reg_read(hdev, 0x80021004, &fw_version);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to get fw version (%d)", err);
+ return err;
+ }
+
+ snprintf(fwname, sizeof(fwname),
+ "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
+ dev_id & 0xffff, (fw_version & 0xff) + 1);
+ err = mt79xx_setup(hdev, fwname);
+ if (err < 0)
+ return err;
+ break;
+ case 0x7663:
+ case 0x7668:
+ err = mt76xx_setup(hdev, bdev->data->fwname);
+ if (err < 0)
+ return err;
+ break;
+ default:
+ return -ENODEV;
+ }
+
rettime = ktime_get();
delta = ktime_sub(rettime, calltime);
duration = (unsigned long long)ktime_to_ns(delta) >> 10;
--
2.25.1