[PATCH v2 06/10] Bluetooth: btmtksdio: update register CSDIOCSR operation
From: <sean.wang@mediatek.com>
Date: 2021-10-18 21:40:51
Also in:
linux-mediatek, lkml
Subsystem:
bluetooth drivers, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
From: Sean Wang <sean.wang@mediatek.com> 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 <redacted> Signed-off-by: Mark-yw Chen <redacted> Signed-off-by: Sean Wang <sean.wang@mediatek.com> --- 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