summaryrefslogtreecommitdiff
path: root/drivers/bluetooth/btmtksdio.c
diff options
context:
space:
mode:
authorMark Chen <mark-yw.chen@mediatek.com>2022-01-12 10:39:11 +0300
committerMarcel Holtmann <marcel@holtmann.org>2022-01-22 01:49:27 +0300
commit2fc967cc0dadad6735448cfbcbc77fe0ea30203d (patch)
treed7686e864b406b68ff6b1e573daf97bc8d11bae0 /drivers/bluetooth/btmtksdio.c
parent9d7cbe2b9cf5f650067df4f402fdd799d4bbb4e1 (diff)
downloadlinux-2fc967cc0dadad6735448cfbcbc77fe0ea30203d.tar.xz
Bluetooth: mt7921s: fix firmware coredump retrieve
According to the MCU firmware behavior, as the driver is aware of the notification of the interrupt source FW_MAILBOX_INT that shows the MCU completed delivered a core dump piece to the host, the driver must acknowledge the MCU with the register PH2DSM0R bit PH2DSM0R_DRIVER_OWN to notify the MCU to handle the next core dump piece. Fixes: db57b625912a ("Bluetooth: btmtksdio: add support of processing firmware coredump and log") 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> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth/btmtksdio.c')
-rw-r--r--drivers/bluetooth/btmtksdio.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
index 25fb9c79b1f4..784e65c3fddd 100644
--- a/drivers/bluetooth/btmtksdio.c
+++ b/drivers/bluetooth/btmtksdio.c
@@ -87,8 +87,12 @@ MODULE_DEVICE_TABLE(sdio, btmtksdio_table);
#define RX_DONE_INT BIT(1)
#define TX_EMPTY BIT(2)
#define TX_FIFO_OVERFLOW BIT(8)
+#define FW_MAILBOX_INT BIT(15)
#define RX_PKT_LEN GENMASK(31, 16)
+#define MTK_REG_PH2DSM0R 0xc4
+#define PH2DSM0R_DRIVER_OWN BIT(0)
+
#define MTK_REG_CTDR 0x18
#define MTK_REG_CRDR 0x1c
@@ -481,6 +485,12 @@ static void btmtksdio_txrx_work(struct work_struct *work)
*/
sdio_writel(bdev->func, int_status, MTK_REG_CHISR, NULL);
+ if ((int_status & FW_MAILBOX_INT) &&
+ bdev->data->chipid == 0x7921) {
+ sdio_writel(bdev->func, PH2DSM0R_DRIVER_OWN,
+ MTK_REG_PH2DSM0R, 0);
+ }
+
if (int_status & FW_OWN_BACK_INT)
bt_dev_dbg(bdev->hdev, "Get fw own back");