[PATCH 4/4] Bluetooth: btmtk: add MT7902 SDIO support

[Sean Wang <sean.wang@kernel.org>]

From: Sean Wang <sean.wang@mediatek.com>

Add MT7902 Bluetooth SDIO support by introducing chip data and
registering the device ID.

Runtime PM is not yet supported by the driver, but normal operation
is unaffected.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
---
 drivers/bluetooth/btmtksdio.c | 42 ++++++++++++++++++++++++-----------
 1 file changed, 29 insertions(+), 13 deletions(-)

diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
index e986e5af51ae..042064464d34 100644
--- a/drivers/bluetooth/btmtksdio.c
+++ b/drivers/bluetooth/btmtksdio.c
@@ -42,24 +42,35 @@ struct btmtksdio_data {
 	const char *fwname;
 	u16 chipid;
 	bool lp_mbox_supported;
+	bool pm_runtime_supported;
 };
 
 static const struct btmtksdio_data mt7663_data = {
 	.fwname = FIRMWARE_MT7663,
 	.chipid = 0x7663,
 	.lp_mbox_supported = false,
+	.pm_runtime_supported = true,
 };
 
 static const struct btmtksdio_data mt7668_data = {
 	.fwname = FIRMWARE_MT7668,
 	.chipid = 0x7668,
 	.lp_mbox_supported = false,
+	.pm_runtime_supported = true,
 };
 
 static const struct btmtksdio_data mt7921_data = {
 	.fwname = FIRMWARE_MT7961,
 	.chipid = 0x7921,
 	.lp_mbox_supported = true,
+	.pm_runtime_supported = true,
+};
+
+static const struct btmtksdio_data mt7902_data = {
+	.fwname = FIRMWARE_MT7902,
+	.chipid = 0x7902,
+	.lp_mbox_supported = false,
+	.pm_runtime_supported = false,
 };
 
 static const struct sdio_device_id btmtksdio_table[] = {
@@ -69,6 +80,8 @@ static const struct sdio_device_id btmtksdio_table[] = {
 	 .driver_data = (kernel_ulong_t)&mt7668_data },
 	{SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, SDIO_DEVICE_ID_MEDIATEK_MT7961),
 	 .driver_data = (kernel_ulong_t)&mt7921_data },
+	{SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, SDIO_DEVICE_ID_MEDIATEK_MT7902),
+	.driver_data = (kernel_ulong_t)&mt7902_data },
 	{ }	/* Terminating entry */
 };
 MODULE_DEVICE_TABLE(sdio, btmtksdio_table);
@@ -1090,6 +1103,7 @@ static int btmtksdio_setup(struct hci_dev *hdev)
 	set_bit(BTMTKSDIO_HW_TX_READY, &bdev->tx_state);
 
 	switch (bdev->data->chipid) {
+	case 0x7902:
 	case 0x7921:
 		if (test_bit(BTMTKSDIO_HW_RESET_ACTIVE, &bdev->tx_state)) {
 			err = btmtksdio_mtk_reg_read(hdev, MT7921_DLSTATUS,
@@ -1167,22 +1181,24 @@ static int btmtksdio_setup(struct hci_dev *hdev)
 	delta = ktime_sub(rettime, calltime);
 	duration = (unsigned long long)ktime_to_ns(delta) >> 10;
 
-	pm_runtime_set_autosuspend_delay(bdev->dev,
-					 MTKBTSDIO_AUTOSUSPEND_DELAY);
-	pm_runtime_use_autosuspend(bdev->dev);
+	if (bdev->data->pm_runtime_supported) {
+		pm_runtime_set_autosuspend_delay(bdev->dev,
+						 MTKBTSDIO_AUTOSUSPEND_DELAY);
+		pm_runtime_use_autosuspend(bdev->dev);
 
-	err = pm_runtime_set_active(bdev->dev);
-	if (err < 0)
-		return err;
+		err = pm_runtime_set_active(bdev->dev);
+		if (err < 0)
+			return err;
 
-	/* Default forbid runtime auto suspend, that can be allowed by
-	 * enable_autosuspend flag or the PM runtime entry under sysfs.
-	 */
-	pm_runtime_forbid(bdev->dev);
-	pm_runtime_enable(bdev->dev);
+		/* Default forbid runtime auto suspend, that can be allowed by
+		 * enable_autosuspend flag or the PM runtime entry under sysfs.
+		 */
+		pm_runtime_forbid(bdev->dev);
+		pm_runtime_enable(bdev->dev);
 
-	if (enable_autosuspend)
-		pm_runtime_allow(bdev->dev);
+		if (enable_autosuspend)
+			pm_runtime_allow(bdev->dev);
+	}
 
 	bt_dev_info(hdev, "Device setup in %llu usecs", duration);
 
-- 
2.43.0