* Move DSP_CALLBACK_* enum to sound.h

* Add software based volume control for a certain range (SW_VOLUME_MIN -> SW_VOLUME_MAX)
 * Make Onda VX747 use it
 * Don't change volume or frequency in Ingenic Jz4740 codec driver when they're already set


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22106 a1c6a512-1295-4272-9138-f99709370657

apps/dsp.c

@@ -890,6 +890,15 @@ static void set_gain(struct dsp_config *dsp)
             (long) (((int64_t) dsp->data.gain * eq_precut) >> 24);
     }
 
+#ifdef HAVE_SW_VOLUME_CONTROL
+    if (global_settings.volume < SW_VOLUME_MAX ||
+        global_settings.volume > SW_VOLUME_MIN)
+    {
+        int vol_gain = get_replaygain_int(global_settings.volume * 100);
+        dsp->data.gain = (long) (((int64_t) dsp->data.gain * vol_gain) >> 24);
+    }
+#endif
+
     if (dsp->data.gain == DEFAULT_GAIN)
     {
         dsp->data.gain = 0;
@@ -1149,6 +1158,11 @@ int dsp_callback(int msg, intptr_t param)
     case DSP_CALLBACK_SET_TREBLE:
         treble = param;
         break;
+#ifdef HAVE_SW_VOLUME_CONTROL
+    case DSP_CALLBACK_SET_SW_VOLUME:
+        set_gain(&AUDIO_DSP);
+        break;
+#endif
 #endif
     case DSP_CALLBACK_SET_CHANNEL_CONFIG:
         dsp_set_channel_config(param);

apps/dsp.h

@@ -56,14 +56,6 @@ enum
     DSP_CROSSFEED
 };
 
-enum {
-    DSP_CALLBACK_SET_PRESCALE = 0,
-    DSP_CALLBACK_SET_BASS,
-    DSP_CALLBACK_SET_TREBLE,
-    DSP_CALLBACK_SET_CHANNEL_CONFIG,
-    DSP_CALLBACK_SET_STEREO_WIDTH
-};
-
 struct dsp_config;
 
 int dsp_process(struct dsp_config *dsp, char *dest,

firmware/export/config-ondavx747.h

@@ -139,6 +139,14 @@
 /* has no tone controls, so we use the software ones */
 #define HAVE_SW_TONE_CONTROLS
 
+/* has no volume control, so we use the software ones */
+#define HAVE_SW_VOLUME_CONTROL
+
+/* software controlled volume ranges from -73 -> 0 dB, other than that
+   is controlled by hardware */
+#define SW_VOLUME_MIN   -73
+#define SW_VOLUME_MAX   0
+
 /* define the bitmask of hardware sample rates */
 #define HW_SAMPR_CAPS   (SAMPR_CAP_48 | SAMPR_CAP_44 | SAMPR_CAP_32 | \
                          SAMPR_CAP_24 | SAMPR_CAP_22 | SAMPR_CAP_16 | \

firmware/export/sound.h

@@ -24,6 +24,19 @@
 #include <inttypes.h>
 #include <audiohw.h>
 
+#if CONFIG_CODEC == SWCODEC
+enum {
+    DSP_CALLBACK_SET_PRESCALE = 0,
+    DSP_CALLBACK_SET_BASS,
+    DSP_CALLBACK_SET_TREBLE,
+    DSP_CALLBACK_SET_CHANNEL_CONFIG,
+    DSP_CALLBACK_SET_STEREO_WIDTH,
+#ifdef HAVE_SW_VOLUME_CONTROL
+    DSP_CALLBACK_SET_SW_VOLUME,
+#endif
+};
+#endif
+
 typedef void sound_set_type(int value);
 
 const char *sound_unit(int setting);

firmware/sound.c

@@ -158,16 +158,6 @@ sound_set_type* sound_get_fn(int setting)
 }
 
 #if CONFIG_CODEC == SWCODEC
-/* Copied from dsp.h, nasty nasty, but we don't want to include dsp.h */
-
-enum {
-    DSP_CALLBACK_SET_PRESCALE = 0,
-    DSP_CALLBACK_SET_BASS,
-    DSP_CALLBACK_SET_TREBLE,
-    DSP_CALLBACK_SET_CHANNEL_CONFIG,
-    DSP_CALLBACK_SET_STEREO_WIDTH
-};
-
 static int (*dsp_callback)(int, intptr_t) = NULL;
 
 void sound_set_dsp_callback(int (*func)(int, intptr_t))
@@ -251,6 +241,10 @@ static void set_prescaled_volume(void)
         r += ((r - (VOLUME_MIN - ONE_DB)) * current_balance) / VOLUME_RANGE;
     }
 
+#ifdef HAVE_SW_VOLUME_CONTROL
+    dsp_callback(DSP_CALLBACK_SET_SW_VOLUME, 0);
+#endif
+
 #if CONFIG_CODEC == MAS3507D
     dac_volume(tenthdb2reg(l), tenthdb2reg(r), false);
 #elif defined(HAVE_UDA1380) || defined(HAVE_WM8975) || defined(HAVE_WM8758) \

firmware/target/mips/ingenic_jz47xx/codec-jz4740.c

@@ -27,7 +27,8 @@
 
 /* TODO */
 const struct sound_settings_info audiohw_settings[] = {
-    [SOUND_VOLUME]        = {"dB", 0,  2,   0,   6,   0},
+    /* HAVE_SW_VOLUME_CONTROL */
+    [SOUND_VOLUME]        = {"dB", 0,  1, SW_VOLUME_MIN, 6,   0},
     /* HAVE_SW_TONE_CONTROLS */
     [SOUND_BASS]          = {"dB", 0,  1, -24,  24,   0},
     [SOUND_TREBLE]        = {"dB", 0,  1, -24,  24,   0},
@@ -79,7 +80,7 @@ static void i2s_codec_init(void)
 
     REG_ICDC_CDCCR1 &= ~(ICDC_CDCCR1_SUSPD | ICDC_CDCCR1_RST);
 
-    REG_ICDC_CDCCR2 = ( ICDC_CDCCR2_AINVOL(14) | ICDC_CDCCR2_SMPR(ICDC_CDCCR2_SMPR_44)
+    REG_ICDC_CDCCR2 = ( ICDC_CDCCR2_AINVOL(23) | ICDC_CDCCR2_SMPR(ICDC_CDCCR2_SMPR_44)
                       | ICDC_CDCCR2_HPVOL(ICDC_CDCCR2_HPVOL_0));
 
     mdelay(15);
@@ -287,9 +288,14 @@ void audiohw_init(void)
 
 void audiohw_set_volume(int v)
 {
+    if(v >= 0)
+    {
         /* 0 <= v <= 60 */
-    unsigned int codec_volume = v / 20;
+        unsigned int codec_volume = ICDC_CDCCR2_HPVOL(v / 20);
-    REG_ICDC_CDCCR2 = (REG_ICDC_CDCCR2 & ~ICDC_CDCCR2_HPVOL(0x3)) | ICDC_CDCCR2_HPVOL(codec_volume);
+
+        if((REG_ICDC_CDCCR2 & ICDC_CDCCR2_HPVOL(0x3)) != codec_volume)
+            REG_ICDC_CDCCR2 = (REG_ICDC_CDCCR2 & ~ICDC_CDCCR2_HPVOL(0x3)) | codec_volume;
+    }
 }
 
 void audiohw_set_frequency(int freq)
@@ -329,6 +335,7 @@ void audiohw_set_frequency(int freq)
             return;
     }
 
+    if((REG_ICDC_CDCCR2 & ICDC_CDCCR2_SMPR(0xF)) != speed)
         REG_ICDC_CDCCR2 = (REG_ICDC_CDCCR2 & ~ICDC_CDCCR2_SMPR(0xF)) | speed;
 }
 
@@ -356,20 +363,16 @@ void audio_input_mux(int source, unsigned flags)
         case AUDIO_SRC_PLAYBACK:
             audio_channels = 2;
             if(source != last_source)
-            {
                 REG_ICDC_CDCCR1 = (REG_ICDC_CDCCR1 & ~(ICDC_CDCCR1_ELININ | ICDC_CDCCR1_EMIC | ICDC_CDCCR1_EADC | ICDC_CDCCR1_SW1ON | ICDC_CDCCR1_HPMUTE))
                                     | (ICDC_CDCCR1_EDAC | ICDC_CDCCR1_SW2ON);
-            }
             break;
 
 #if INPUT_SRC_CAPS & SRC_CAP_MIC
         case AUDIO_SRC_MIC:             /* recording only */
             audio_channels = 1;
             if(source != last_source)
-            {
                 REG_ICDC_CDCCR1 = (REG_ICDC_CDCCR1 & ~(ICDC_CDCCR1_ELININ | ICDC_CDCCR1_EDAC | ICDC_CDCCR1_SW2ON | ICDC_CDCCR1_HPMUTE)) 
                                     | (ICDC_CDCCR1_EADC | ICDC_CDCCR1_SW1ON | ICDC_CDCCR1_EMIC);
-            }
             break;
 #endif
 
@@ -383,15 +386,11 @@ void audio_input_mux(int source, unsigned flags)
             last_recording = recording;
 
             if(recording)
-            {
                 REG_ICDC_CDCCR1 = (REG_ICDC_CDCCR1 & ~(ICDC_CDCCR1_EMIC | ICDC_CDCCR1_EDAC | ICDC_CDCCR1_SW2ON | ICDC_CDCCR1_HPMUTE))
                                     | (ICDC_CDCCR1_EADC | ICDC_CDCCR1_SW1ON | ICDC_CDCCR1_ELININ);
-            }
             else
-            {
                 REG_ICDC_CDCCR1 = (REG_ICDC_CDCCR1 & ~(ICDC_CDCCR1_EMIC | ICDC_CDCCR1_EDAC | ICDC_CDCCR1_EADC |
                                    ICDC_CDCCR1_SW2ON | ICDC_CDCCR1_HPMUTE)) | (ICDC_CDCCR1_SW1ON | ICDC_CDCCR1_ELININ);
-            }
             break;
 #endif
     } /* end switch */