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Subject[PATCH v1 2/4] Bluetooth: btmtksdio: Add a bit definition for CHLPCR
Date
From: Sean Wang <sean.wang@mediatek.com>

Add a register bit definition about CHLPCR bit 8 because the bit is quite
different in the meaning between reading and writing that bit.

The patch adds a definition particularly for the bit read to avoid the
confusion about using write definition to read the bit.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
---
drivers/bluetooth/btmtksdio.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
index 681e3e34977e..9c123a9de673 100644
--- a/drivers/bluetooth/btmtksdio.c
+++ b/drivers/bluetooth/btmtksdio.c
@@ -56,7 +56,8 @@ static const struct sdio_device_id btmtksdio_table[] = {
#define MTK_REG_CHLPCR 0x4 /* W1S */
#define C_INT_EN_SET BIT(0)
#define C_INT_EN_CLR BIT(1)
-#define C_FW_OWN_REQ_SET BIT(8)
+#define C_FW_OWN_REQ_SET BIT(8) /* For write */
+#define C_COM_DRV_OWN BIT(8) /* For read */
#define C_FW_OWN_REQ_CLR BIT(9)

#define MTK_REG_CSDIOCSR 0x8
@@ -526,7 +527,7 @@ static int btmtksdio_open(struct hci_dev *hdev)
goto err_disable_func;

err = readx_poll_timeout(btmtksdio_drv_own_query, bdev, status,
- status & C_FW_OWN_REQ_SET, 2000, 1000000);
+ status & C_COM_DRV_OWN, 2000, 1000000);
if (err < 0) {
bt_dev_err(bdev->hdev, "Cannot get ownership from device");
goto err_disable_func;
@@ -606,7 +607,7 @@ static int btmtksdio_close(struct hci_dev *hdev)
sdio_writel(bdev->func, C_FW_OWN_REQ_SET, MTK_REG_CHLPCR, NULL);

err = readx_poll_timeout(btmtksdio_drv_own_query, bdev, status,
- !(status & C_FW_OWN_REQ_SET), 2000, 1000000);
+ !(status & C_COM_DRV_OWN), 2000, 1000000);
if (err < 0)
bt_dev_err(bdev->hdev, "Cannot return ownership to device");

--
2.18.0
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