Improvements to mini2440/UDA1341 audio

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23478 a1c6a512-1295-4272-9138-f99709370657

3 files changed, 109 insertions, 17 deletions

diff --git a/firmware/drivers/audio/uda1341.c b/firmware/drivers/audio/uda1341.c
index f9d95ef..0171169 100644
--- a/firmware/drivers/audio/uda1341.c
+++ b/firmware/drivers/audio/uda1341.c
@@ -33,9 +33,9 @@ const struct sound_settings_info audiohw_settings[] = {
     [SOUND_VOLUME]        = {"dB", 0,  1, -84,   0, -25},

     [SOUND_BASS]          = {"dB", 0,  2,   0,  24,   0},

     [SOUND_TREBLE]        = {"dB", 0,  2,   0,   6,   0},

-    [SOUND_BALANCE]       = {"%",  0,  1,-100, 100,   0},

-    [SOUND_CHANNELS]      = {"",   0,  1,   0,   5,   0},

-    [SOUND_STEREO_WIDTH]  = {"%",  0,  5,   0, 250, 100},

+    [SOUND_BALANCE]       = {"%",  0,  1,-100, 100,   0},   /* not used */
+    [SOUND_CHANNELS]      = {"",   0,  1,   0,   5,   0},   /* not used */
+    [SOUND_STEREO_WIDTH]  = {"%",  0,  5,   0, 250, 100},   /* not used */
 #ifdef HAVE_RECORDING

     [SOUND_LEFT_GAIN]     = {"dB", 1,  1,-128,  96,   0},

     [SOUND_RIGHT_GAIN]    = {"dB", 1,  1,-128,  96,   0},

@@ -43,6 +43,17 @@ const struct sound_settings_info audiohw_settings[] = {
 #endif

 };

 

+/* convert tenth of dB volume (-600..0) to master volume register value */
+int tenthdb2master(int db)
+{
+    if (db < -600) 
+        return 63;
+    else                            /* 1 dB steps */
+        return -(db / 10) + 1;
+}
+
+static unsigned short uda_regs[NUM_REG_ID];
+
 /****************************************************************************/

 

 /* ------------------------------------------------- */

@@ -59,7 +70,7 @@ const struct sound_settings_info audiohw_settings[] = {
 static void l3_init (void)

 {

     L3PORT |= L3MODE | L3CLOCK;

-    L3PORT &= L3DATA; 

+    L3PORT &= ~L3DATA; 
 

     S3C2440_GPIO_CONFIG (GPBCON, 2, GPIO_OUTPUT);   /* L3 MODE */

     S3C2440_GPIO_CONFIG (GPBCON, 3, GPIO_OUTPUT);   /* L3 DATA */

@@ -72,8 +83,8 @@ static void l3_init (void)
 

 static void bit_delay (void)

 {

-    int j;

-    for (j=0; j<4; j++)

+    volatile int j;
+    for (j=0; j<5; j++)
         ;

 }

 

@@ -86,6 +97,7 @@ static void l3_write_byte (unsigned char data, bool address_mode)
         L3PORT &= ~L3MODE;

     else

         L3PORT |= L3MODE;

+    bit_delay();
     

     for (bit=0; bit < 8; bit++)

     {

@@ -144,41 +156,91 @@ static void udacodec_reset(void)
                                     I2S_IFMT_IIS);

     udacodec_write (UDA_REG_STATUS, UDA_STATUS_0 | UDA_SYSCLK_256FS | I2S_IFMT_IIS);

     udacodec_write (UDA_REG_STATUS, UDA_STATUS_1 | UDA_POWER_DAC_ON);

+    
+    uda_regs[UDA_REG_ID_CTRL2] = UDA_PEAK_DETECT_POS_AFTER | 
+            UDA_DE_EMPHASIS_NONE | UDA_MUTE_OFF | UDA_MODE_SWITCH_FLAT;
+    
 }

 

 /****************************************************************************/

 

 /* Audio API functions */

 

+/* This table must match the table in pcm-xxxx.c if using Master mode */
+/* [reserved, master clock rate] */
+static const unsigned char uda_freq_parms[HW_NUM_FREQ][2] =
+{
+    [HW_FREQ_64] = { 0, UDA_SYSCLK_256FS },
+    [HW_FREQ_44] = { 0, UDA_SYSCLK_384FS },
+    [HW_FREQ_22] = { 0, UDA_SYSCLK_256FS },
+    [HW_FREQ_11] = { 0, UDA_SYSCLK_256FS },
+};
+
 void audiohw_init(void)

 {

     udacodec_reset();

+     
+    audiohw_set_bass (0);  
+    audiohw_set_treble (0);  
+    audiohw_set_master_vol (26, 26);    /* -25 dB */
 }

 

+void audiohw_postinit(void)
+{
+}
+
 void audiohw_close(void)

 {

+    /* DAC, ADC off */
+    udacodec_write (UDA_REG_STATUS, UDA_STATUS_1 | 0);
 }

 

 void audiohw_set_bass(int value)

 {

+    uda_regs [UDA_REG_ID_CTRL1] &= UDA_BASS_BOOST (UDA_BASS_BOOST_MASK);
+    uda_regs [UDA_REG_ID_CTRL1] |= UDA_BASS_BOOST (value & UDA_BASS_BOOST_MASK);
+     
+    udacodec_write (UDA_REG_DATA0, UDA_DATA_CTRL1 | uda_regs [UDA_REG_ID_CTRL1] );
 }

 

 void audiohw_set_treble(int value)

 {

+    uda_regs [UDA_REG_ID_CTRL1] &= UDA_TREBLE (UDA_TREBLE_MASK);
+    uda_regs [UDA_REG_ID_CTRL1] |= UDA_TREBLE (value & UDA_TREBLE_MASK);
+     
+    udacodec_write (UDA_REG_DATA0, UDA_DATA_CTRL1 | uda_regs [UDA_REG_ID_CTRL1] );
 }

 

 void audiohw_mute(bool mute)

 {

+    if (mute)
+        uda_regs [UDA_REG_ID_CTRL2] |= UDA_MUTE_ON;
+    else    
+        uda_regs [UDA_REG_ID_CTRL2] &= ~UDA_MUTE_ON;
+    
+    udacodec_write (UDA_REG_DATA0, UDA_DATA_CTRL2 | uda_regs [UDA_REG_ID_CTRL2] );
 }

 

 void audiohw_set_prescaler(int val)

 {

+    (void)val;
 }

 

-void audiohw_postinit(void)

+/**
+ * Sets left and right master volume  (1(max) to 62(muted))
+ */
+void audiohw_set_master_vol(int vol_l, int vol_r)
 {

+    uda_regs[UDA_REG_ID_CTRL0] = (vol_l + vol_r) / 2;
+    udacodec_write (UDA_REG_DATA0, UDA_DATA_CTRL0 | uda_regs[UDA_REG_ID_CTRL0]);
 }

 

 void audiohw_set_frequency(int fsel)

 {

+    if ((unsigned)fsel >= HW_NUM_FREQ)
+        fsel = HW_FREQ_DEFAULT;
+
+    uda_regs[UDA_REG_ID_STATUS_0] = I2S_IFMT_IIS | uda_freq_parms[fsel][1];
+
+    udacodec_write (UDA_REG_STATUS, UDA_STATUS_0 | uda_regs[UDA_REG_ID_STATUS_0]);
 }

diff --git a/firmware/export/uda1341.h b/firmware/export/uda1341.h
index dcbbeef..a43d33a 100644
--- a/firmware/export/uda1341.h
+++ b/firmware/export/uda1341.h
@@ -26,7 +26,7 @@
 #define VOLUME_MIN -840
 #define VOLUME_MAX  0
 
-#define AUDIOHW_CAPS (BASS_CAP | TREBLE_CAP | PRESCALER_CAP)
+#define AUDIOHW_CAPS (BASS_CAP | TREBLE_CAP)
 
 extern int tenthdb2master(int db);
 extern int tenthdb2mixer(int db);
@@ -34,6 +34,23 @@ extern int tenthdb2mixer(int db);
 extern void audiohw_set_master_vol(int vol_l, int vol_r);
 extern void audiohw_set_mixer_vol(int channel1, int channel2);
 
+/* These are logical register numbers for driver */ 
+enum uda_register {
+    UDA_REG_ID_STATUS_0,
+    UDA_REG_ID_STATUS_1,
+    UDA_REG_ID_CTRL0,
+    UDA_REG_ID_CTRL1,
+    UDA_REG_ID_CTRL2,
+    UDA_REG_ID_EXT_0,
+    UDA_REG_ID_EXT_1,
+    UDA_REG_ID_EXT_2,
+    UDA_REG_ID_EXT_4,
+    UDA_REG_ID_EXT_5,
+    UDA_REG_ID_EXT_6,
+    NUM_REG_ID
+};
+
+
 /* Address byte */
 #define UDA1341_ADDR            0x14
 #define UDA_REG_DATA0           0x00
@@ -67,23 +84,27 @@ extern void audiohw_set_mixer_vol(int channel1, int channel2);
 #define UDA_POWER_DAC_ON        (1 << 0)
 
 /* DATA0 */
-#define UDA_DATA_CTRL0          (0 << 6)
-#define UDA_DATA_CTRL1          (1 << 6)
-#define UDA_DATA_CTRL2          (2 << 6)
+#define UDA_DATA_CTRL0          (0 << 6)    /* volume */
+#define UDA_DATA_CTRL1          (1 << 6)    /* bass, treble */
+#define UDA_DATA_CTRL2          (2 << 6)    /* peak det pos, de-emp, mute */
 #define UDA_DATA_EXT_ADDR       (6 << 5)
 #define UDA_DATA_EXT_DATA       (7 << 5)
 
-#define UDA_VOLUME(x)           ((x) << 8)  /* 1=0dB, 61=-60dB */
+#define UDA_VOLUME(x)           ((x) << 0)  /* 1=0dB, 61=-60dB */
 
 #define UDA_BASS_BOOST(x)       ((x) << 2)  /* see datasheet */
+#define UDA_BASS_BOOST_MASK     0x0F  
 #define UDA_TREBLE(x)           ((x) << 0)  /* see datasheet */
+#define UDA_TREBLE_MASK         0x03  
 
-#define UDA_PEAK_DETECT_POS     (1 << 5)
+#define UDA_PEAK_DETECT_POS_BEFORE  (0 << 5)
+#define UDA_PEAK_DETECT_POS_AFTER   (1 << 5)
 #define UDA_DE_EMPHASIS_NONE    (0 << 3)
 #define UDA_DE_EMPHASIS_32      (1 << 3)
 #define UDA_DE_EMPHASIS_44_1    (2 << 3)
 #define UDA_DE_EMPHASIS_48      (3 << 3)
-#define UDA_MUTE                (1 << 2)
+#define UDA_MUTE_ON                 (1 << 2)
+#define UDA_MUTE_OFF                (0 << 2)
 #define UDA_MODE_SWITCH_FLAT    (0 << 0)
 #define UDA_MODE_SWITCH_MIN     (1 << 0)
 #define UDA_MODE_SWITCH_MAX     (3 << 0)
diff --git a/firmware/target/arm/s3c2440/mini2440/pcm-mini2440.c b/firmware/target/arm/s3c2440/mini2440/pcm-mini2440.c
index 237bf26..9c898f8 100644
--- a/firmware/target/arm/s3c2440/mini2440/pcm-mini2440.c
+++ b/firmware/target/arm/s3c2440/mini2440/pcm-mini2440.c
@@ -19,6 +19,7 @@
  *
  ****************************************************************************/
 #include <stdlib.h>
+#include "config.h"
 #include "system.h"
 #include "kernel.h"
 #include "logf.h"
@@ -48,7 +49,7 @@ static struct
 static const unsigned char pcm_freq_parms[HW_NUM_FREQ][2] =
 {
     [HW_FREQ_64] = { 2, IISMOD_MASTER_CLOCK_256FS },
-    [HW_FREQ_44] = { 3, IISMOD_MASTER_CLOCK_384FS },
+    [HW_FREQ_44] = { 2, IISMOD_MASTER_CLOCK_384FS },
     [HW_FREQ_22] = { 8, IISMOD_MASTER_CLOCK_256FS },
     [HW_FREQ_11] = { 17, IISMOD_MASTER_CLOCK_256FS },
 };
@@ -127,9 +128,12 @@ void pcm_postinit(void)
 void pcm_dma_apply_settings(void)
 {
 #ifdef HAVE_UDA1341
+	unsigned int reg_val;
     /* set prescaler and master clock rate according to freq */
-    IISPSR = (pcm_freq_parms [pcm_fsel][0] * IISPSR_PRESCALER_A) | pcm_freq_parms [pcm_fsel][0];
-    IISMOD |= ~IISMOD_MASTER_CLOCK_384FS | pcm_freq_parms [pcm_fsel][1] ;
+    reg_val = (pcm_freq_parms [pcm_fsel][0] << 5) | pcm_freq_parms [pcm_fsel][0];
+
+    IISMOD = (IISMOD & ~IISMOD_MASTER_CLOCK_384FS) | pcm_freq_parms [pcm_fsel][1] ;
+	IISPSR = reg_val;
 #endif
 
     audiohw_set_frequency(pcm_fsel);
@@ -156,6 +160,11 @@ static void play_start_pcm(void)
     /* turn off the idle */
     IISCON &= ~(1<<3);
 
+#ifdef HAVE_UDA1341
+    IISMOD = (IISMOD & ~IISMOD_MASTER_CLOCK_384FS) | pcm_freq_parms [pcm_fsel][1] ;
+    IISPSR = (pcm_freq_parms [pcm_fsel][0] << 5) | pcm_freq_parms [pcm_fsel][0];
+#endif
+
     /* start the IIS */
     IISCON |= (1<<0);
 }