1 files changed, 305 insertions, 0 deletions

diff --git a/firmware/drivers/audio/wm8731l.c b/firmware/drivers/audio/wm8731l.c
new file mode 100644
index 0000000000..62b1b6a81e
--- /dev/null
+++ b/firmware/drivers/audio/wm8731l.c
@@ -0,0 +1,305 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Driver for WM8731L audio codec
+ *
+ * Based on code from the ipodlinux project - http://ipodlinux.org/
+ * Adapted for Rockbox in January 2006
+ *
+ * Original file: linux/arch/armnommu/mach-ipod/audio.c
+ *
+ * Copyright (c) 2003-2005 Bernard Leach (leachbj@bouncycastle.org)
+ *
+ * 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 "lcd.h"
+#include "cpu.h"
+#include "kernel.h"
+#include "thread.h"
+#include "power.h"
+#include "debug.h"
+#include "system.h"
+#include "sprintf.h"
+#include "button.h"
+#include "string.h"
+#include "file.h"
+#include "buffer.h"
+#include "audio.h"
+
+#include "wmcodec.h"
+#include "wm8731l.h"
+#include "i2s.h"
+
+#define IPOD_PCM_LEVEL 0x65       /* -6dB */
+
+/* use zero crossing to reduce clicks during volume changes */
+#define VOLUME_ZC_WAIT (1<<7)
+
+/* convert tenth of dB volume (-730..60) to master volume register value */
+int tenthdb2master(int db)
+{
+    /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
+    /* 1111111 == +6dB  (0x7f) */
+    /* 1111001 == 0dB   (0x79) */
+    /* 0110000 == -73dB (0x30 */
+    /* 0101111 == mute  (0x2f) */
+
+    if (db < VOLUME_MIN) {
+        return 0x2f;
+    } else {
+        return((db/10)+0x30+73);
+    }
+}
+
+/* convert tenth of dB volume (-780..0) to mixer volume register value */
+int tenthdb2mixer(int db)
+{
+    if (db < -660)                 /* 1.5 dB steps */
+        return (2640 - db) / 15;
+    else if (db < -600)            /* 0.75 dB steps */
+        return (990 - db) * 2 / 15;
+    else if (db < -460)            /* 0.5 dB steps */
+        return (460 - db) / 5; 
+    else                           /* 0.25 dB steps */
+        return -db * 2 / 5;
+}
+
+int audiohw_mute(int mute)
+{
+    if (mute)
+    {
+        /* Set DACMU = 1 to soft-mute the audio DACs. */
+        wmcodec_write(DACCTRL, 0x8);
+    } else {
+        /* Set DACMU = 0 to soft-un-mute the audio DACs. */
+        wmcodec_write(DACCTRL, 0x0);
+    }
+
+    return 0;
+}
+
+/** From ipodLinux **/
+static void codec_set_active(int active)
+{
+    /* set active to 0x0 or 0x1 */
+    if (active) {
+        wmcodec_write(ACTIVECTRL, 0x01);
+    } else {
+        wmcodec_write(ACTIVECTRL, 0x00);
+    }
+}
+
+
+/* Silently enable / disable audio output */
+void audiohw_enable_output(bool enable)
+{
+    if (enable)
+    {
+        /* reset the I2S controller into known state */
+        i2s_reset();
+
+        wmcodec_write(RESET, 0x0);        /*Reset*/
+
+        codec_set_active(0x0);
+
+#ifdef HAVE_WM8721
+        /* DACSEL=1 */
+        wmcodec_write(0x4, 0x10);
+#elif defined HAVE_WM8731
+        /* DACSEL=1, BYPASS=1 */
+        wmcodec_write(0x4, 0x18);
+#endif
+    
+        /* set power register to POWEROFF=0 on OUTPD=0, DACPD=0 */
+        wmcodec_write(PWRMGMT, 0x67);
+
+        /* BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0 LRP=0 */
+        /* IWL=00(16 bit) FORMAT=10(I2S format) */
+        wmcodec_write(AINTFCE, 0x42);
+
+        audiohw_set_sample_rate(WM8731L_44100HZ);
+
+        /* set the volume to -6dB */
+        wmcodec_write(LOUTVOL, IPOD_PCM_LEVEL);
+        wmcodec_write(ROUTVOL, 0x100 | IPOD_PCM_LEVEL);
+
+        /* ACTIVE=1 */
+        codec_set_active(1);
+
+        /* 5. Set DACMU = 0 to soft-un-mute the audio DACs. */
+        wmcodec_write(DACCTRL, 0x0);
+        
+#if defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
+        /* We need to enable bit 4 of GPIOL for output for sound on H10 */
+        GPIOL_OUTPUT_VAL |= 0x10;
+#endif
+        audiohw_mute(0);
+    } else {
+#if defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
+        /* We need to disable bit 4 of GPIOL to disable sound on H10 */
+        GPIOL_OUTPUT_VAL &= ~0x10;
+#endif
+        audiohw_mute(1);
+    }
+}
+
+int audiohw_set_master_vol(int vol_l, int vol_r)
+{
+    /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
+    /* 1111111 == +6dB */
+    /* 1111001 == 0dB */
+    /* 0110000 == -73dB */
+    /* 0101111 == mute (0x2f) */
+
+    wmcodec_write(LOUTVOL, VOLUME_ZC_WAIT | vol_l);
+    wmcodec_write(ROUTVOL, VOLUME_ZC_WAIT | vol_r);
+ 
+    return 0;
+}
+
+int audiohw_set_mixer_vol(int channel1, int channel2)
+{
+    (void)channel1;
+    (void)channel2;
+
+    return 0;
+}
+
+void audiohw_set_bass(int value)
+{
+    (void)value;
+}
+
+void audiohw_set_treble(int value)
+{
+    (void)value;
+}
+
+/* Nice shutdown of WM8731 codec */
+void audiohw_close(void)
+{
+   /* set DACMU=1 DEEMPH=0 */
+    wmcodec_write(DACCTRL, 0x8);
+
+    /* ACTIVE=0 */
+    codec_set_active(0x0);
+
+    /* line in mute left & right*/
+    wmcodec_write(LINVOL, 0x100 | 0x80);
+
+    /* set DACSEL=0, MUTEMIC=1 */
+    wmcodec_write(0x4, 0x2);
+
+    /* set POWEROFF=0 OUTPD=0 DACPD=1 */
+    wmcodec_write(PWRMGMT, 0x6f);
+
+    /* set POWEROFF=1 OUTPD=1 DACPD=1 */
+    wmcodec_write(PWRMGMT, 0xff);
+}
+
+/* Change the order of the noise shaper, 5th order is recommended above 32kHz */
+void audiohw_set_nsorder(int order)
+{
+    (void)order;
+}
+
+void audiohw_set_sample_rate(int sampling_control)
+{
+    codec_set_active(0x0);
+    wmcodec_write(SAMPCTRL, sampling_control);
+    codec_set_active(0x1);
+}
+
+void audiohw_enable_recording(bool source_mic)
+{
+    static int line_level = 0x17;
+    static int mic_boost = true;
+    codec_set_active(0x0);
+    
+    /* set BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0
+     * LRP=0 IWL=00(16 bit) FORMAT=10(I2S format) */
+    wmcodec_write(AINTFCE, 0x42);
+    
+    wmcodec_write(LOUTVOL, 0x0);   /* headphone mute left */
+    wmcodec_write(ROUTVOL, 0x0);   /* headphone mute right */
+
+    
+    if(source_mic){
+        wmcodec_write(LINVOL, 0x80);  /* line in mute left */
+        wmcodec_write(RINVOL, 0x80);  /* line in mute right */
+
+
+        if (mic_boost) {
+            wmcodec_write(AAPCTRL, 0x5);   /* INSEL=mic, MIC_BOOST=enable */
+        } else {
+            wmcodec_write(AAPCTRL, 0x4);   /* INSEL=mic */
+        }
+    } else {
+        if (line_level == 0) {
+            wmcodec_write(LINVOL, 0x80);
+            wmcodec_write(RINVOL, 0x80);
+        } else {
+            wmcodec_write(LINVOL, line_level);
+            wmcodec_write(RINVOL, line_level);
+        }
+        wmcodec_write(AAPCTRL, 0xa);   /* BY PASS, mute mic, INSEL=line in */
+    }
+    
+    /* disable ADC high pass filter, mute dac */
+    wmcodec_write(DACCTRL, 0x9);
+    
+    /* power on (PWR_OFF=0) */
+    if(source_mic){
+        /* CLKOUTPD OSCPD OUTPD DACPD LINEINPD */
+        wmcodec_write(PWRMGMT, 0x79);
+    } else {
+        wmcodec_write(PWRMGMT, 0x7a);  /* MICPD */
+    }
+    
+    codec_set_active(0x1);
+}
+
+void audiohw_disable_recording(void)
+{
+    /* set DACMU=1 DEEMPH=0 */
+    wmcodec_write(DACCTRL, 0x8);
+    
+    /* ACTIVE=0 */
+    codec_set_active(0x0);
+    
+    /* line in mute left & right*/
+    wmcodec_write(LINVOL, 0x80);
+    wmcodec_write(RINVOL, 0x80);
+    
+    /* set DACSEL=0, MUTEMIC=1 */
+    wmcodec_write(AAPCTRL, 0x2);
+    
+    /* set POWEROFF=0 OUTPD=0 DACPD=1 */
+    wmcodec_write(PWRMGMT, 0x6f);
+    
+    /* set POWEROFF=1 OUTPD=1 DACPD=1 */
+    wmcodec_write(PWRMGMT, 0xff);
+}
+
+void audiohw_set_recvol(int left, int right, int type)
+{
+    (void)left;
+    (void)right;
+    (void)type;
+}
+
+void audiohw_set_monitor(int enable)
+{
+    (void)enable;
+}