[PATCH v1 06/10] Bluetooth: btmtksdio: update register CSDIOCSR operation

From: sean.wang
Date: Fri Oct 08 2021 - 18:21:45 EST


From: Sean Wang <sean.wang@xxxxxxxxxxxx>

That is a preliminary patch to introduce mt7921s support.

Update register CSDIOCSR operation that is suggested from the vendor
driver and is compatible to the all devices.

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/btmtksdio.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
index f712b52e5797..3381c8844902 100644
--- a/drivers/bluetooth/btmtksdio.c
+++ b/drivers/bluetooth/btmtksdio.c
@@ -520,8 +520,12 @@ static int btmtksdio_open(struct hci_dev *hdev)
/* SDIO CMD 5 allows the SDIO device back to idle state an
* synchronous interrupt is supported in SDIO 4-bit mode
*/
- sdio_writel(bdev->func, SDIO_INT_CTL | SDIO_RE_INIT_EN,
- MTK_REG_CSDIOCSR, &err);
+ val = sdio_readl(bdev->func, MTK_REG_CSDIOCSR, &err);
+ if (err < 0)
+ goto err_release_irq;
+
+ val |= SDIO_INT_CTL;
+ sdio_writel(bdev->func, val, MTK_REG_CSDIOCSR, &err);
if (err < 0)
goto err_release_irq;

--
2.25.1