Commit 2fc967cc authored by Mark Chen's avatar Mark Chen Committed by Marcel Holtmann
Browse files

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: db57b625 ("Bluetooth: btmtksdio: add support of processing firmware coredump and log")
Co-developed-by: default avatarSean Wang <sean.wang@mediatek.com>
Signed-off-by: default avatarSean Wang <sean.wang@mediatek.com>
Signed-off-by: default avatarMark Chen <mark-yw.chen@mediatek.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 9d7cbe2b

drivers/bluetooth/btmtksdio.c

+10 −0
Original line number Diff line number Diff line
@@ -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");