trxcon/scheduler: introduce a new CBTX lchan flag

This new flag is intended to indicate that continuous burst
transmission is assumed on particular logical channel. In other
words, if a logical channel has this flag, but there is nothing
to transmit in a TX buffer, then either a dummy LAPDm frame or
a silence frame shall be sent.

Change-Id: I25fcf9eeb787ffe5378d92532439e67d7d42fa65

2 files changed, 32 insertions, 30 deletions

diff --git a/src/host/trxcon/sched_lchan_desc.c b/src/host/trxcon/sched_lchan_desc.c
index e0617a54..e94a2083 100644
--- a/src/host/trxcon/sched_lchan_desc.c
+++ b/src/host/trxcon/sched_lchan_desc.c
@@ -109,181 +109,181 @@ const struct trx_lchan_desc trx_lchan_desc[_TRX_CHAN_MAX] = {
 	{
 		TRXC_TCHF,		"TCH/F",
 		0x08,			LID_DEDIC,
-		8 * GSM_BURST_PL_LEN,	0x00,
+		8 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_tchf_fn,		tx_tchf_fn,
 	},
 	{
 		TRXC_TCHH_0,		"TCH/H(0)",
 		0x10,			LID_DEDIC,
-		6 * GSM_BURST_PL_LEN,	0x00,
+		6 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_tchh_fn,		tx_tchh_fn,
 	},
 	{
 		TRXC_TCHH_1,		"TCH/H(1)",
 		0x18,			LID_DEDIC,
-		6 * GSM_BURST_PL_LEN,	0x00,
+		6 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_tchh_fn,		tx_tchh_fn,
 	},
 	{
 		TRXC_SDCCH4_0,		"SDCCH/4(0)",
 		0x20,			LID_DEDIC,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SDCCH4_1,		"SDCCH/4(1)",
 		0x28,			LID_DEDIC,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SDCCH4_2,		"SDCCH/4(2)",
 		0x30,			LID_DEDIC,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SDCCH4_3,		"SDCCH/4(3)",
 		0x38,			LID_DEDIC,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SDCCH8_0,		"SDCCH/8(0)",
 		0x40,			LID_DEDIC,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SDCCH8_1,		"SDCCH/8(1)",
 		0x48,			LID_DEDIC,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SDCCH8_2,		"SDCCH/8(2)",
 		0x50,			LID_DEDIC,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SDCCH8_3,		"SDCCH/8(3)",
 		0x58,			LID_DEDIC,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SDCCH8_4,		"SDCCH/8(4)",
 		0x60,			LID_DEDIC,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SDCCH8_5,		"SDCCH/8(5)",
 		0x68,			LID_DEDIC,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SDCCH8_6,		"SDCCH/8(6)",
 		0x70,			LID_DEDIC,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SDCCH8_7,		"SDCCH/8(7)",
 		0x78,			LID_DEDIC,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SACCHTF,		"SACCH/TF",
 		0x08,			LID_SACCH,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SACCHTH_0,		"SACCH/TH(0)",
 		0x10,			LID_SACCH,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SACCHTH_1,		"SACCH/TH(1)",
 		0x18,			LID_SACCH,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SACCH4_0,		"SACCH/4(0)",
 		0x20,			LID_SACCH,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SACCH4_1,		"SACCH/4(1)",
 		0x28,			LID_SACCH,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SACCH4_2,		"SACCH/4(2)",
 		0x30,			LID_SACCH,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SACCH4_3,		"SACCH/4(3)",
 		0x38,			LID_SACCH,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SACCH8_0,		"SACCH/8(0)",
 		0x40,			LID_SACCH,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SACCH8_1,		"SACCH/8(1)",
 		0x48,			LID_SACCH,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SACCH8_2,		"SACCH/8(2)",
 		0x50,			LID_SACCH,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SACCH8_3,		"SACCH/8(3)",
 		0x58,			LID_SACCH,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SACCH8_4,		"SACCH/8(4)",
 		0x60,			LID_SACCH,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SACCH8_5,		"SACCH/8(5)",
 		0x68,			LID_SACCH,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SACCH8_6,		"SACCH/8(6)",
 		0x70,			LID_SACCH,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
 		TRXC_SACCH8_7,		"SACCH/8(7)",
 		0x78,			LID_SACCH,
-		4 * GSM_BURST_PL_LEN,	0x00,
+		4 * GSM_BURST_PL_LEN,	TRX_CH_FLAG_CBTX,
 		rx_data_fn,		tx_data_fn,
 	},
 	{
diff --git a/src/host/trxcon/sched_trx.h b/src/host/trxcon/sched_trx.h
index 78f458df..6a025436 100644
--- a/src/host/trxcon/sched_trx.h
+++ b/src/host/trxcon/sched_trx.h
@@ -21,6 +21,8 @@
 #define TRX_CH_FLAG_PDCH	(1 << 0)
 /* Should a channel be activated automatically */
 #define TRX_CH_FLAG_AUTO	(1 << 1)
+/* Is continuous burst transmission assumed */
+#define TRX_CH_FLAG_CBTX	(1 << 2)
 
 #define MAX_A5_KEY_LEN		(128 / 8)
 #define TRX_TS_COUNT		8