fw/l1: Add 'TRX' internal interface

This is a generic interface to submit and retrieve bursts to be
transmitted. By default it has a dummy implementation that does
nothing and it's up to the 'application' to provide a correct
implementation.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>

3 files changed, 90 insertions, 2 deletions

diff --git a/src/target/firmware/include/layer1/trx.h b/src/target/firmware/include/layer1/trx.h
new file mode 100644
index 00000000..83c7a71f
--- /dev/null
+++ b/src/target/firmware/include/layer1/trx.h
@@ -0,0 +1,45 @@
+/* TRX interface for BTS primitive of Layer 1 */
+
+/* (C) 2012 by Sylvain Munaut <tnt@246tNt.com>
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef __L1_TRX_H__
+#define __L1_TRX_H__
+
+
+#include <stdint.h>
+
+
+/* Burst types */
+#define BURST_FB	0
+#define BURST_SB	1
+#define BURST_DUMMY	2
+#define BURST_NB	3
+#define BURST_AB	4
+
+/* Init */
+void trx_init(void);
+
+/* Interface to retrieve / submit bursts */
+extern int trx_get_burst(uint32_t fn, uint8_t tn, uint8_t *data);
+extern int trx_put_burst(uint32_t fn, uint8_t tn, uint8_t type, uint8_t *data);
+
+
+#endif /* __L1_TRX_H__ */
diff --git a/src/target/firmware/layer1/Makefile b/src/target/firmware/layer1/Makefile
index 0c710a5d..8e655b67 100644
--- a/src/target/firmware/layer1/Makefile
+++ b/src/target/firmware/layer1/Makefile
@@ -2,8 +2,9 @@
 LIBRARIES+=layer1
 LIB_layer1_DIR=layer1
 LIB_layer1_SRCS=avg.c agc.c afc.c toa.c sync.c tdma_sched.c tpu_window.c init.c \
-		l23_api.c mframe_sched.c sched_gsmtime.c async.c rfch.c apc.c
+		l23_api.c mframe_sched.c sched_gsmtime.c async.c rfch.c apc.c \
+		trx_dummy.c
 
 LIB_layer1_SRCS += prim_pm.c prim_rach.c prim_tx_nb.c prim_rx_nb.c prim_fbsb.c \
-		   prim_freq.c prim_utils.c prim_tch.c
+		   prim_freq.c prim_utils.c prim_tch.c prim_bts.c
 
diff --git a/src/target/firmware/layer1/trx_dummy.c b/src/target/firmware/layer1/trx_dummy.c
new file mode 100644
index 00000000..44ca4f17
--- /dev/null
+++ b/src/target/firmware/layer1/trx_dummy.c
@@ -0,0 +1,42 @@
+/* Dummy TRX interface for BTS primitive of Layer 1 */
+
+/* Note: In theory, it's the APP responsability to provide an
+ * implementation. Here we have weak dummy funcs in case the app
+ * doesn't require a functional BTS mode
+ */
+
+/* (C) 2012 by Sylvain Munaut <tnt@246tNt.com>
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <stdint.h>
+
+#include <layer1/trx.h>
+
+int __attribute__((weak))
+trx_get_burst(uint32_t fn, uint8_t tn, uint8_t *data)
+{
+	return 0;
+}
+
+int __attribute__((weak))
+trx_put_burst(uint32_t fn, uint8_t tn, uint8_t type, uint8_t *data)
+{
+	return 0;
+}