From: Sean Wang <sean.wang@xxxxxxxxxxxx>
Commit ce64b3e94919 ("Bluetooth: mt7921s: Support wake on bluetooth")
adds the wake on bluethooth via a dedicated GPIO.
Extend the wake-on-bluetooth to use the SDIO DAT1 pin (in-band wakeup),
when supported by the SDIO host driver.
Co-developed-by: Yake Yang <yake.yang@xxxxxxxxxxxx>
Signed-off-by: Yake Yang <yake.yang@xxxxxxxxxxxx>
Signed-off-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
---
v2: enhance the patch description and comments
---
drivers/bluetooth/btmtksdio.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
index d6700efcfe8c..9d79c9107b3a 100644
--- a/drivers/bluetooth/btmtksdio.c
+++ b/drivers/bluetooth/btmtksdio.c
@@ -118,6 +118,7 @@ MODULE_DEVICE_TABLE(sdio, btmtksdio_table);
#define BTMTKSDIO_FUNC_ENABLED 3
#define BTMTKSDIO_PATCH_ENABLED 4
#define BTMTKSDIO_HW_RESET_ACTIVE 5
+#define BTMTKSDIO_INBAND_WAKEUP 6
struct mtkbtsdio_hdr {
__le16 len;
@@ -1294,6 +1295,9 @@ static bool btmtksdio_sdio_wakeup(struct hci_dev *hdev)
.wakeup_delay = cpu_to_le16(0x20),
};
+ if (test_bit(BTMTKSDIO_INBAND_WAKEUP, &bdev->tx_state))
+ return may_wakeup;
+
if (may_wakeup && bdev->data->chipid == 0x7921) {
struct sk_buff *skb;
@@ -1384,6 +1388,10 @@ static int btmtksdio_probe(struct sdio_func *func,
*/
pm_runtime_put_noidle(bdev->dev);
+ /* Mark if MMC host supports wake on bluetooth by SDIO */
+ if (device_can_wakeup(func->card->host->parent))
+ set_bit(BTMTKSDIO_INBAND_WAKEUP, &bdev->tx_state);
+
err = device_init_wakeup(bdev->dev, true);
if (err)
bt_dev_err(hdev, "failed to initialize device wakeup");
--
2.25.1
