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Bluetooth: btmtksdio: explicitly set WHISR as write-1-clear

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That is a preliminary patch to introduce mt7921s support.

Explicitly set WHISR as write-1-clear method to all devices that is
the expected behavior the driver rely on.

Co-developed-by: Mark-yw Chen <mark-yw.chen@mediatek.com>
Signed-off-by: Mark-yw Chen <mark-yw.chen@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Sean Wang 2021-10-19 05:30:15 +08:00 committed by Marcel Holtmann
parent 877ec9e1d0
commit 77b210d1ae
1 changed files with 8 additions and 3 deletions
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11
drivers/bluetooth/btmtksdio.c
View file

@ -487,8 +487,8 @@ static void btmtksdio_interrupt(struct sdio_func *func)
static int btmtksdio_open(struct hci_dev *hdev)
{
struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
u32 status, val;
int err;
u32 status;
sdio_claim_host(bdev->func);
@ -533,8 +533,13 @@ static int btmtksdio_open(struct hci_dev *hdev)
if (err < 0)
goto err_release_irq;
/* Setup write-1-clear for CHISR register */
sdio_writel(bdev->func, C_INT_CLR_CTRL, MTK_REG_CHCR, &err);
/* Explitly set write-1-clear method */
val = sdio_readl(bdev->func, MTK_REG_CHCR, &err);
if (err < 0)
goto err_release_irq;
val |= C_INT_CLR_CTRL;
sdio_writel(bdev->func, val, MTK_REG_CHCR, &err);
if (err < 0)
goto err_release_irq;