From: Harish Bandi c-hbandi@codeaurora.org
[ Upstream commit a2780889e247561744dd8efbd3478a1999b72ae3 ]
WCN399x chips are coex chips, it needs a VS pre shutdown command while turning off the BT. So that chip can inform BT is OFF to other active clients.
Signed-off-by: Harish Bandi c-hbandi@codeaurora.org Signed-off-by: Marcel Holtmann marcel@holtmann.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/bluetooth/btqca.c | 21 +++++++++++++++++++++ drivers/bluetooth/btqca.h | 7 +++++++ drivers/bluetooth/hci_qca.c | 3 +++ 3 files changed, 31 insertions(+)
diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c index 0ee5acb685a10..ee25e6ae1a098 100644 --- a/drivers/bluetooth/btqca.c +++ b/drivers/bluetooth/btqca.c @@ -99,6 +99,27 @@ static int qca_send_reset(struct hci_dev *hdev) return 0; }
+int qca_send_pre_shutdown_cmd(struct hci_dev *hdev) +{ + struct sk_buff *skb; + int err; + + bt_dev_dbg(hdev, "QCA pre shutdown cmd"); + + skb = __hci_cmd_sync(hdev, QCA_PRE_SHUTDOWN_CMD, 0, + NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + err = PTR_ERR(skb); + bt_dev_err(hdev, "QCA preshutdown_cmd failed (%d)", err); + return err; + } + + kfree_skb(skb); + + return 0; +} +EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd); + static void qca_tlv_check_data(struct rome_config *config, const struct firmware *fw) { diff --git a/drivers/bluetooth/btqca.h b/drivers/bluetooth/btqca.h index e9c9999596035..f2a9e576a86ce 100644 --- a/drivers/bluetooth/btqca.h +++ b/drivers/bluetooth/btqca.h @@ -13,6 +13,7 @@ #define EDL_PATCH_TLV_REQ_CMD (0x1E) #define EDL_NVM_ACCESS_SET_REQ_CMD (0x01) #define MAX_SIZE_PER_TLV_SEGMENT (243) +#define QCA_PRE_SHUTDOWN_CMD (0xFC08)
#define EDL_CMD_REQ_RES_EVT (0x00) #define EDL_PATCH_VER_RES_EVT (0x19) @@ -130,6 +131,7 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate, enum qca_btsoc_type soc_type, u32 soc_ver); int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version); int qca_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr); +int qca_send_pre_shutdown_cmd(struct hci_dev *hdev); static inline bool qca_is_wcn399x(enum qca_btsoc_type soc_type) { return soc_type == QCA_WCN3990 || soc_type == QCA_WCN3998; @@ -161,4 +163,9 @@ static inline bool qca_is_wcn399x(enum qca_btsoc_type soc_type) { return false; } + +static inline int qca_send_pre_shutdown_cmd(struct hci_dev *hdev) +{ + return -EOPNOTSUPP; +} #endif diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index f41fb2c02e4fd..d88b024eaf566 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -1319,6 +1319,9 @@ static int qca_power_off(struct hci_dev *hdev) { struct hci_uart *hu = hci_get_drvdata(hdev);
+ /* Perform pre shutdown command */ + qca_send_pre_shutdown_cmd(hdev); + qca_power_shutdown(hu); return 0; }