From 8a6291dd63063bea12805a41fd43f13c17aa2be5 Mon Sep 17 00:00:00 2001
From: Jens Arnold <amiconn@rockbox.org>
Date: Fri, 14 Mar 2008 08:54:54 +0000
Subject: More iAudio M3 work. Target build compiles, but same problem
 regarding plugins as the simulator. Boots to the menu, but it can't be used
 yet because only main & remote Play button work. USB works.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16660 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/target/coldfire/iaudio/m3/audio-m3.c | 114 ++++++++++++++++++++++++++
 1 file changed, 114 insertions(+)
 create mode 100644 firmware/target/coldfire/iaudio/m3/audio-m3.c

(limited to 'firmware/target/coldfire/iaudio/m3/audio-m3.c')

diff --git a/firmware/target/coldfire/iaudio/m3/audio-m3.c b/firmware/target/coldfire/iaudio/m3/audio-m3.c
new file mode 100644
index 0000000000..4edae48744
--- /dev/null
+++ b/firmware/target/coldfire/iaudio/m3/audio-m3.c
@@ -0,0 +1,114 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2006 by Michael Sevakis
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "system.h"
+#include "cpu.h"
+#include "audio.h"
+#include "sound.h"
+
+void audio_set_output_source(int source)
+{
+    int level = set_irq_level(DMA_IRQ_LEVEL);
+    unsigned long txsrc;
+
+    if ((unsigned)source >= AUDIO_NUM_SOURCES)
+        txsrc = (3 << 8); /* playback, PDOR3 */
+    else
+        txsrc = (4 << 8); /* recording, iis1RcvData */
+
+    IIS1CONFIG = (IIS1CONFIG & ~(7 << 8)) | txsrc;
+    set_irq_level(level);
+} /* audio_set_output_source */
+
+void audio_input_mux(int source, unsigned flags)
+{
+    /* Prevent pops from unneeded switching */
+    static int last_source = AUDIO_SRC_PLAYBACK;
+    static bool last_recording = false;
+
+    bool recording = flags & SRCF_RECORDING;
+
+    switch (source)
+    {
+        default:                            /* playback - no recording */
+            source = AUDIO_SRC_PLAYBACK;
+        case AUDIO_SRC_PLAYBACK:
+            if (source != last_source)
+            {
+                audiohw_disable_recording();
+                audiohw_set_monitor(false);
+                coldfire_set_dataincontrol(0);
+            }
+        break;
+
+        case AUDIO_SRC_MIC:                 /* recording only */
+            if (source != last_source)
+            {
+                audiohw_enable_recording(true);  /* source mic */
+                /* Int. when 6 samples in FIFO, PDIR2 src = iis1RcvData */
+                coldfire_set_dataincontrol((3 << 14) | (4 << 3));
+            }
+        break;
+
+        case AUDIO_SRC_LINEIN:              /* recording only */
+            if (source != last_source)
+            {
+                audiohw_enable_recording(false); /* source line */
+                /* Int. when 6 samples in FIFO, PDIR2 src = iis1RcvData */
+                coldfire_set_dataincontrol((3 << 14) | (4 << 3));
+            }
+        break;
+
+        case AUDIO_SRC_FMRADIO:             /* recording and playback */
+            if (!recording)
+                audiohw_set_recvol(23, 23, AUDIO_GAIN_LINEIN);
+
+            /* I2S recording and analog playback */
+            if (source == last_source && recording == last_recording)
+                break;
+
+            last_recording = recording;
+
+            if (recording)
+            {
+                /* Int. when 6 samples in FIFO, PDIR2 src = iis1RcvData */
+                coldfire_set_dataincontrol((3 << 14) | (4 << 3));
+                audiohw_enable_recording(false); /* source line */
+            }
+            else
+            {
+                audiohw_disable_recording();
+                audiohw_set_monitor(true);       /* analog bypass */
+                coldfire_set_dataincontrol(0);
+            }
+        break;
+    } /* end switch */
+
+    /* set line multiplexer */
+    if (source == AUDIO_SRC_FMRADIO)
+        and_l(~(1 << 25), &GPIO1_OUT);   /* FM radio */
+    else
+        or_l((1 << 25), &GPIO1_OUT);     /* Line In */
+
+    or_l((1 << 25), &GPIO1_ENABLE);
+    or_l((1 << 25), &GPIO1_FUNCTION);
+
+    last_source = source;
+} /* audio_input_mux */
+
-- 
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