static void CbusConnectionCheck ( byte channel )
{
static byte busConnected[ MHD_MAX_CHANNELS ] = {0};
/* If CBUS connection state has changed for this channel, */
/* update channel state and hardware. */
if ( busConnected[ channel ] != SI_CbusChannelConnected( channel ))
{
busConnected[ channel ] = SI_CbusChannelConnected( channel );
// heartbeat has been disabled in all products
// SI_CbusHeartBeat( channel, busConnected[ channel ] );
printk("CPCBUS:: ***Channel: %d, CBUS %s ****\n", (int)channel , busConnected[ channel ] ? "Connected" : "Unconnected");
}
}
Bool SI_CbusInitialize ( void )
{
byte channel;
int result = STATUS_SUCCESS;
int port = 0;
word devcap_reg;
int regval;
memset( &l_cbus, 0, sizeof( l_cbus ));
dev_cap_regs_ready_bit = FALSE;
/* Determine the Port Switch input ports that are selected for MHD */
/* operation and initialize the port to channel decode array. */
channel = 0;
//
// Setup local DEVCAP registers for read by the peer
//
devcap_reg = REG_CBUS_DEVICE_CAP_0;
SiIRegioCbusWrite(devcap_reg++, channel, MHD_DEV_ACTIVE);
SiIRegioCbusWrite(devcap_reg++, channel, MHD_VERSION);
SiIRegioCbusWrite(devcap_reg++, channel, MHD_DEVICE_CATEGORY);
SiIRegioCbusWrite(devcap_reg++, channel, 0);
SiIRegioCbusWrite(devcap_reg++, channel, 0);
SiIRegioCbusWrite(devcap_reg++, channel, MHD_DEV_VID_LINK_SUPPRGB444);
SiIRegioCbusWrite(devcap_reg++, channel, MHD_DEV_AUD_LINK_2CH);
SiIRegioCbusWrite(devcap_reg++, channel, 0); // not for source
SiIRegioCbusWrite(devcap_reg++, channel, MHD_LOGICAL_DEVICE_MAP);
SiIRegioCbusWrite(devcap_reg++, channel, 0); // not for source
SiIRegioCbusWrite(devcap_reg++, channel, MHD_RCP_SUPPORT | MHD_RAP_SUPPORT); // feature flag
SiIRegioCbusWrite(devcap_reg++, channel, 0);
SiIRegioCbusWrite(devcap_reg++, channel, 0); // reserved
SiIRegioCbusWrite(devcap_reg++, channel, MHD_SCRATCHPAD_SIZE);
SiIRegioCbusWrite(devcap_reg++, channel, MHD_INTERRUPT_SIZE);
SiIRegioCbusWrite(devcap_reg++, channel, 0); //reserved
if(SiIRegioCbusRead(REG_CBUS_SUPPORT, channel) == 0xff)
{
// Display all registers for debugging. Only at initialization.
printk( "cbus initialization failed\n");
cbus_display_registers(0, 0x30);
return ERROR_INIT;
}
SiIRegioCbusWrite(REG_CBUS_INTR_ENABLE, channel, (BIT_CONNECT_CHG | BIT_MSC_MSG_RCV | BIT_MSC_XFR_DONE | BIT_MSC_XFR_ABORT | BIT_MSC_ABORT | BIT_HEARTBEAT_TIMEOUT ));
regval = SiIRegioCbusRead(REG_CBUS_LINK_CONTROL_2, channel);
regval = (regval | 0x0C);
SiIRegioCbusWrite(REG_CBUS_LINK_CONTROL_2, channel, regval);
// Clear legacy bit on Wolverine TX.
regval = SiIRegioCbusRead( REG_MSC_TIMEOUT_LIMIT, channel );
SiIRegioCbusWrite( REG_MSC_TIMEOUT_LIMIT, channel, (regval & MSC_TIMEOUT_LIMIT_MSB_MASK));
// Set NMax to 1
SiIRegioCbusWrite( REG_CBUS_LINK_CONTROL_1, channel, 0x01);
printk( "cbus_initialize. Poll interval = %d ms. CBUS Connected = %d\n", (int)CBUS_FW_INTR_POLL_MILLISECS, (int)SI_CbusChannelConnected(channel));
return result;
}
