Introduce HiFi E.T. MA8/MA8C ports.

HiFi E.T. MA8 is almost the same as MA9 except
another DAC(pcm1792 in ma8, df1704 in ma9).

MA8 has ILI9342 lcd, MA8C has ILI9342C lcd.

Change-Id: If2ac04f5a3382590b2a392c46286559f54b2ed6a

1 files changed, 133 insertions, 0 deletions

diff --git a/firmware/drivers/audio/pcm1792.c b/firmware/drivers/audio/pcm1792.c
new file mode 100644
index 0000000000..67237a920a
--- /dev/null
+++ b/firmware/drivers/audio/pcm1792.c
@@ -0,0 +1,133 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2013 Andrew Ryabinin
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "system.h"
+#include "pcm1792.h"
+#include "config.h"
+#include "audio.h"
+#include "audiohw.h"
+
+/* pcm1792 registers initial values */
+#define REG18_INIT_VALUE (PCM1792_ATLD_OFF|PCM1792_FMT_16_I2S| \
+                          PCM1792_DMF_DISABLE|PCM1792_DME_OFF)
+
+#define REG19_INIT_VALUE (PCM1792_REV_ON|PCM1792_ATS_DIV1| \
+                          PCM1792_OPE_ON|PCM1792_DFMS_MONO| \
+                          PCM1792_FLT_SHARP|PCM1792_INZD_OFF)
+
+#define REG20_INIT_VALUE (PCM1792_SRST_NORMAL|PCM1792_DSD_OFF|\
+                          PCM1792_DFTH_ENABLE|PCM1792_STEREO|\
+                          PCM1792_OS_64)
+
+#define REG21_INIT_VALUE (PCM1792_DZ_DISABLE|PCM1792_PCMZ_ON)
+
+
+static void pcm1792_write_reg(const int reg, const unsigned int value)
+{
+    int i;
+
+    pcm1792_set_ml_dir(0);
+    pcm1792_set_md(1);
+    pcm1792_set_mc(0);
+    pcm1792_set_ml(0);
+
+    for (i = (1<<15); i; i >>= 1) {
+        udelay(40);
+        pcm1792_set_mc(0);
+
+        if ((reg|value) & i) {
+            pcm1792_set_md(1);
+        } else {
+            pcm1792_set_md(0);
+        }
+
+        udelay(40);
+        pcm1792_set_mc(1);
+    }
+
+    udelay(40);
+    pcm1792_set_ml(1);
+    pcm1792_set_mc(0);
+    udelay(130);
+    pcm1792_set_md(1);
+}
+
+static int vol_tenthdb2hw(const int tdb)
+{
+    if (tdb < PCM1792_VOLUME_MIN) {
+        return 0;
+    } else if (tdb > PCM1792_VOLUME_MAX) {
+        return 0xff;
+    } else {
+        return (tdb/5+0xff);
+    }
+}
+
+
+void audiohw_init(void)
+{
+        pcm1792_write_reg(PCM1792_REG(18), REG18_INIT_VALUE);
+        pcm1792_write_reg(PCM1792_REG(19), REG19_INIT_VALUE);
+        pcm1792_write_reg(PCM1792_REG(20), REG20_INIT_VALUE);
+        pcm1792_write_reg(PCM1792_REG(21), REG21_INIT_VALUE);
+
+    /* Left & Right volumes */
+        pcm1792_write_reg(PCM1792_REG(16), 0xff);
+        pcm1792_write_reg(PCM1792_REG(17), 0xff);
+}
+
+void audiohw_mute(void)
+{
+        pcm1792_write_reg(PCM1792_REG(18), REG18_INIT_VALUE|PCM1792_MUTE_ON);
+}
+
+void audiohw_unmute(void)
+{
+        pcm1792_write_reg(PCM1792_REG(18), REG18_INIT_VALUE);
+}
+
+void audiohw_preinit(void)
+{
+}
+
+void audiohw_set_frequency(int fsel)
+{
+    (void)fsel;
+}
+
+void audiohw_set_volume(int vol_l, int vol_r)
+{
+    pcm1792_write_reg(PCM1792_REG(16), vol_tenthdb2hw(vol_l));
+    pcm1792_write_reg(PCM1792_REG(17), vol_tenthdb2hw(vol_r));
+}
+
+void audiohw_set_filter_roll_off(int value)
+{
+    if (value == 0) {
+        pcm1792_write_reg(PCM1792_REG(19),
+                          REG19_INIT_VALUE
+                          |PCM1792_FLT_SHARP);
+    } else {
+        pcm1792_write_reg(PCM1792_REG(19),
+                          REG19_INIT_VALUE
+                          |PCM1792_FLT_SLOW);
+    }
+}