Merge "BT: Add Low latency flow for Mediatek BT Chip" into main (87e4749f) · Commits · e / os / android_packages_modules_Bluetooth

system/stack/include/hcidefs.h

+9 −0

Original line number	Diff line number	Diff line
		@@ -916,6 +916,9 @@ typedef struct {
		// TODO Remove this once all UNISOC specific hacks are removed.
		#define LMP_COMPID_UNISOC 0x073F

		// TODO Remove this once all Mediatek specific hacks are removed.
		#define LMP_COMPID_MEDIATEK 0x0046

		/* Parameter information for HCI_SYNA_SET_ACL_PRIORITY */
		#define HCI_SYNA_ACL_PRIORITY_PARAM_SIZE 3
		#define HCI_SYNA_ACL_NORMAL_PRIORITY 0xF0
		@@ -929,6 +932,12 @@ typedef struct {
		#define HCI_UNISOC_ACL_NORMAL_PRIORITY 0x00
		#define HCI_UNISOC_ACL_HIGH_PRIORITY 0xFF

		/* Parameter information for HCI_MTK_SET_ACL_PRIORITY */
		#define HCI_MTK_ACL_PRIORITY_PARAM_SIZE 1
		#define HCI_MTK_SET_ACL_PRIORITY (0xFD95 \| HCI_GRP_VENDOR_SPECIFIC)
		#define HCI_MTK_ACL_NORMAL_PRIORITY 0x00
		#define HCI_MTK_ACL_HIGH_PRIORITY 0x01

		/*
		* Define packet size
		*/

+32 −0

Original line number	Diff line number	Diff line
		@@ -2335,6 +2335,34 @@ static void l2cu_set_acl_priority_unisoc(tL2C_LCB* p_lcb,
		HCI_UNISOC_ACL_PRIORITY_PARAM_SIZE, command, NULL);
		}

		/*******************************************************************************
		*
		* Function l2cu_set_acl_priority_latency_mtk
		*
		* Description Sends a VSC to set the ACL priority and recorded latency on
		* Mediatek chip.
		*
		* Returns void
		*
		******************************************************************************/

		static void l2cu_set_acl_priority_latency_mtk(tL2C_LCB* p_lcb,
		tL2CAP_PRIORITY priority) {
		uint8_t vs_param;
		if (priority == L2CAP_PRIORITY_HIGH) {
		// priority to high, if using latency mode check preset latency
		LOG_INFO("Set ACL priority: High Priority Mode");
		vs_param = HCI_MTK_ACL_HIGH_PRIORITY;
		} else {
		// priority to normal
		LOG_INFO("Set ACL priority: Normal Mode");
		vs_param = HCI_MTK_ACL_NORMAL_PRIORITY;
		}

		BTM_VendorSpecificCommand(HCI_MTK_SET_ACL_PRIORITY,
		HCI_MTK_ACL_PRIORITY_PARAM_SIZE, &vs_param, NULL);
		}

		/*******************************************************************************
		*
		* Function l2cu_set_acl_priority
		@@ -2379,6 +2407,10 @@ bool l2cu_set_acl_priority(const RawAddress& bd_addr, tL2CAP_PRIORITY priority,
		l2cu_set_acl_priority_unisoc(p_lcb, priority);
		break;

		case LMP_COMPID_MEDIATEK:
		l2cu_set_acl_priority_latency_mtk(p_lcb, priority);
		break;

		default:
		/* Not supported/required for other vendors */
		break;