tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
1
fork

Configure Feed

Select the types of activity you want to include in your feed.

Bluetooth: btmtksdio: Add pmctrl handling for BT closed state during reset

This patch adds logic to handle power management control when the
Bluetooth function is closed during the SDIO reset sequence.

Specifically, if BT is closed before reset, the driver enables the
SDIO function and sets driver pmctrl. After reset, if BT remains
closed, the driver sets firmware pmctrl and disables the SDIO function.

These changes ensure proper power management and device state consistency
across the reset flow.

Fixes: 8fafe702253d ("Bluetooth: mt7921s: support bluetooth reset mechanism")
Signed-off-by: Chris Lu <chris.lu@mediatek.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

authored by

Chris Lu and committed by
Luiz Augusto von Dentz 77343b8b f0c200a4

+12
+12
drivers/bluetooth/btmtksdio.c
··· 1270 1270 1271 1271 sdio_claim_host(bdev->func); 1272 1272 1273 + /* set drv_pmctrl if BT is closed before doing reset */ 1274 + if (!test_bit(BTMTKSDIO_FUNC_ENABLED, &bdev->tx_state)) { 1275 + sdio_enable_func(bdev->func); 1276 + btmtksdio_drv_pmctrl(bdev); 1277 + } 1278 + 1273 1279 sdio_writel(bdev->func, C_INT_EN_CLR, MTK_REG_CHLPCR, NULL); 1274 1280 skb_queue_purge(&bdev->txq); 1275 1281 cancel_work_sync(&bdev->txrx_work); ··· 1289 1283 if (err < 0) { 1290 1284 bt_dev_err(hdev, "Failed to reset (%d)", err); 1291 1285 goto err; 1286 + } 1287 + 1288 + /* set fw_pmctrl back if BT is closed after doing reset */ 1289 + if (!test_bit(BTMTKSDIO_FUNC_ENABLED, &bdev->tx_state)) { 1290 + btmtksdio_fw_pmctrl(bdev); 1291 + sdio_disable_func(bdev->func); 1292 1292 } 1293 1293 1294 1294 clear_bit(BTMTKSDIO_PATCH_ENABLED, &bdev->tx_state);