Merge "Support setting BT controller Low Latency mode" (f52ca077) · Commits · e / os / android_packages_modules_Bluetooth

system/stack/include/hcidefs.h

+3 −2

Original line number	Diff line number	Diff line
		@@ -914,8 +914,9 @@ typedef struct {

		/* Parameter information for HCI_SYNA_SET_ACL_PRIORITY */
		#define HCI_SYNA_ACL_PRIORITY_PARAM_SIZE 3
		#define HCI_SYNA_ACL_PRIORITY_LOW 0x00
		#define HCI_SYNA_ACL_PRIORITY_HIGH 0xFF
		#define HCI_SYNA_ACL_NORMAL_PRIORITY 0xF0
		#define HCI_SYNA_ACL_HIGH_PRIORITY 0xF2
		#define HCI_SYNA_ACL_HIGH_PRIORITY_LOW_LATENCY 0xF3
		#define HCI_SYNA_SET_ACL_PRIORITY (0x0057 \| HCI_GRP_VENDOR_SPECIFIC)

		/*

system/stack/l2cap/l2c_utils.cc

+56 −11

Original line number	Diff line number	Diff line
		@@ -2274,24 +2274,39 @@ static void l2cu_set_acl_priority_latency_brcm(tL2C_LCB* p_lcb,

		/*******************************************************************************
		*
		* Function l2cu_set_acl_priority_syna
		* Function l2cu_set_acl_priority_latency_syna
		*
		* Description Sends a VSC to set the ACL priority on Synaptics chip.
		* Description Sends a VSC to set the ACL priority and recorded latency on
		* Synaptics chip.
		*
		* Returns void
		*
		******************************************************************************/

		static void l2cu_set_acl_priority_syna(uint16_t handle,
		static void l2cu_set_acl_priority_latency_syna(tL2C_LCB* p_lcb,
		tL2CAP_PRIORITY priority) {
		uint8_t* pp;
		uint8_t command[HCI_SYNA_ACL_PRIORITY_PARAM_SIZE];
		uint8_t vs_param;
		if (priority == L2CAP_PRIORITY_HIGH) {
		// priority to high, if using latency mode check preset latency
		if (p_lcb->use_latency_mode &&
		p_lcb->preset_acl_latency == L2CAP_LATENCY_LOW) {
		LOG_INFO("Set ACL priority: High Priority and Low Latency Mode");
		vs_param = HCI_SYNA_ACL_HIGH_PRIORITY_LOW_LATENCY;
		p_lcb->set_latency(L2CAP_LATENCY_LOW);
		} else {
		LOG_INFO("Set ACL priority: High Priority Mode");
		vs_param = HCI_SYNA_ACL_HIGH_PRIORITY;
		}
		} else {
		// priority to normal
		LOG_INFO("Set ACL priority: Normal Mode");
		vs_param = HCI_SYNA_ACL_NORMAL_PRIORITY;
		p_lcb->set_latency(L2CAP_LATENCY_NORMAL);
		}

		pp = command;
		vs_param = (priority == L2CAP_PRIORITY_HIGH) ? HCI_SYNA_ACL_PRIORITY_HIGH
		: HCI_SYNA_ACL_PRIORITY_LOW;
		UINT16_TO_STREAM(pp, handle);
		uint8_t command[HCI_SYNA_ACL_PRIORITY_PARAM_SIZE];
		uint8_t* pp = command;
		UINT16_TO_STREAM(pp, p_lcb->Handle());
		UINT8_TO_STREAM(pp, vs_param);

		BTM_VendorSpecificCommand(HCI_SYNA_SET_ACL_PRIORITY,
		@@ -2335,7 +2350,7 @@ bool l2cu_set_acl_priority(const RawAddress& bd_addr, tL2CAP_PRIORITY priority,
		break;

		case LMP_COMPID_SYNAPTICS:
		l2cu_set_acl_priority_syna(p_lcb->Handle(), priority);
		l2cu_set_acl_priority_latency_syna(p_lcb, priority);
		break;

		default:
		@@ -2378,6 +2393,32 @@ static void l2cu_set_acl_latency_brcm(tL2C_LCB* p_lcb, tL2CAP_LATENCY latency) {
		HCI_BRCM_ACL_PRIORITY_PARAM_SIZE, command, NULL);
		}

		/*******************************************************************************
		*
		* Function l2cu_set_acl_latency_syna
		*
		* Description Sends a VSC to set the ACL latency on Synatics chip.
		*
		* Returns void
		*
		******************************************************************************/

		static void l2cu_set_acl_latency_syna(tL2C_LCB* p_lcb, tL2CAP_LATENCY latency) {
		LOG_INFO("Set ACL latency: %s",
		latency == L2CAP_LATENCY_LOW ? "Low Latancy" : "Normal Latency");

		uint8_t command[HCI_SYNA_ACL_PRIORITY_PARAM_SIZE];
		uint8_t* pp = command;
		uint8_t vs_param = latency == L2CAP_LATENCY_LOW
		? HCI_SYNA_ACL_HIGH_PRIORITY_LOW_LATENCY
		: HCI_SYNA_ACL_HIGH_PRIORITY;
		UINT16_TO_STREAM(pp, p_lcb->Handle());
		UINT8_TO_STREAM(pp, vs_param);

		BTM_VendorSpecificCommand(HCI_SYNA_SET_ACL_PRIORITY,
		HCI_SYNA_ACL_PRIORITY_PARAM_SIZE, command, NULL);
		}

		/*******************************************************************************
		*
		* Function l2cu_set_acl_latency
		@@ -2406,6 +2447,10 @@ bool l2cu_set_acl_latency(const RawAddress& bd_addr, tL2CAP_LATENCY latency) {
		l2cu_set_acl_latency_brcm(p_lcb, latency);
		break;

		case LMP_COMPID_SYNAPTICS:
		l2cu_set_acl_latency_syna(p_lcb, latency);
		break;

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