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Commit 54579c13 authored by kuanyuhuang's avatar kuanyuhuang
Browse files

Support setting BT controller Low Latency mode 

Support set acl priority and latency by sending vendor vsc.

Bug: 274551249
Bug: 257406628
Tag: #feature
Test: test on sink device support dynamic spatial audio
Change-Id: I6de957383e88df946fe65b5e7b6e77bd1fb5d521
parent bc73c58e

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;