diff options
Diffstat (limited to 'firmware/drivers/wm8731l.c')
| -rw-r--r-- | firmware/drivers/wm8731l.c | 106 |
1 files changed, 54 insertions, 52 deletions
diff --git a/firmware/drivers/wm8731l.c b/firmware/drivers/wm8731l.c index d49e8f4476..990ad0ebbc 100644 --- a/firmware/drivers/wm8731l.c +++ b/firmware/drivers/wm8731l.c @@ -41,40 +41,46 @@ #include "wm8731l.h" #include "pcf50605.h" -void wm8731l_reset(void); - #define IPOD_PCM_LEVEL 0x65 /* -6dB */ -#define RESET (0x0f<<1) -#define PWRMGMT1 (0x19<<1) -#define PWRMGMT2 (0x1a<<1) -#define AINTFCE (0x07<<1) -#define LOUT1VOL (0x02<<1) -#define ROUT1VOL (0x03<<1) -#define LOUT2VOL (0x28<<1) -#define ROUT2VOL (0x29<<1) +#define LINVOL 0x00 +#define RINVOL 0x01 +#define LOUTVOL 0x02 +#define ROUTVOL 0x03 +#define DACCTRL 0x05 +#define PWRMGMT 0x06 +#define AINTFCE 0x07 +#define SAMPCTRL 0x08 +#define ACTIVECTRL 0x09 +#define RESET 0x0f + +void wm8731_write(int reg, int data) +{ + ipod_i2c_send(0x1a, (reg<<1) | ((data&0x100)>>8),data&0xff); +} -int wm8731l_mute(int mute) +int wmcodec_mute(int mute) { if (mute) { /* Set DACMU = 1 to soft-mute the audio DACs. */ - ipod_i2c_send(0x1a, 0xa, 0x8); + wm8731_write(DACCTRL, 0x8); } else { /* Set DACMU = 0 to soft-un-mute the audio DACs. */ - ipod_i2c_send(0x1a, 0xa, 0x0); + wm8731_write(DACCTRL, 0x0); } return 0; } + /** From ipodLinux **/ static void codec_set_active(int active) { /* set active to 0x0 or 0x1 */ if (active) { - ipod_i2c_send(0x1a, 0x12, 0x01); + wm8731_write(ACTIVECTRL, 0x01); } else { - ipod_i2c_send(0x1a, 0x12, 0x00); + wm8731_write(ACTIVECTRL, 0x00); } } @@ -102,7 +108,7 @@ static void i2s_reset(void) * Initialise the WM8975 for playback via headphone and line out. * Note, I'm using the WM8750 datasheet as its apparently close. */ -int wm8731l_init(void) { +int wmcodec_init(void) { /* reset I2C */ i2c_init(); @@ -134,64 +140,61 @@ int wm8731l_init(void) { } /* Silently enable / disable audio output */ -void wm8731l_enable_output(bool enable) +void wmcodec_enable_output(bool enable) { if (enable) { /* reset the I2S controller into known state */ i2s_reset(); - ipod_i2c_send(0x1a, 0x1e, 0x0); /*Reset*/ + wm8731_write(RESET, 0x0); /*Reset*/ codec_set_active(0x0); /* DACSEL=1 */ /* BYPASS=1 */ - ipod_i2c_send(0x1a, 0x8, 0x18); + wm8731_write(0x4, 0x18); /* set power register to POWEROFF=0 on OUTPD=0, DACPD=0 */ - ipod_i2c_send(0x1a, 0xc, 0x67); + wm8731_write(PWRMGMT, 0x67); /* BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0 LRP=0 */ /* IWL=00(16 bit) FORMAT=10(I2S format) */ - ipod_i2c_send(0x1a, 0xe, 0x42); + wm8731_write(AINTFCE, 0x42); - wm8731l_set_sample_rate(WM8731L_44100HZ); + wmcodec_set_sample_rate(WM8731L_44100HZ); /* set the volume to -6dB */ - ipod_i2c_send(0x1a, 0x4, IPOD_PCM_LEVEL); - ipod_i2c_send(0x1a, 0x6 | 0x1, IPOD_PCM_LEVEL); + wm8731_write(LOUTVOL, IPOD_PCM_LEVEL); + wm8731_write(ROUTVOL, 0x100 | IPOD_PCM_LEVEL); /* ACTIVE=1 */ codec_set_active(1); /* 5. Set DACMU = 0 to soft-un-mute the audio DACs. */ - ipod_i2c_send(0x1a, 0xa, 0x0); + wm8731_write(DACCTRL, 0x0); - wm8731l_mute(0); + wmcodec_mute(0); } else { - wm8731l_mute(1); + wmcodec_mute(1); } } -int wm8731l_set_master_vol(int vol_l, int vol_r) +int wmcodec_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) */ - if (vol_l == vol_r) { - ipod_i2c_send(0x1a, 0x4 | 0x1, vol_l); - } else { - ipod_i2c_send(0x1a, 0x4, vol_l); - ipod_i2c_send(0x1a, 0x6, vol_r); - } + + wm8731_write(LOUTVOL, vol_l); + wm8731_write(ROUTVOL, vol_r); return 0; } -int wm8975_set_mixer_vol(int channel1, int channel2) +int wmcodec_set_mixer_vol(int channel1, int channel2) { (void)channel1; (void)channel2; @@ -199,70 +202,69 @@ int wm8975_set_mixer_vol(int channel1, int channel2) return 0; } -void wm8731l_set_bass(int value) +void wmcodec_set_bass(int value) { (void)value; } -void wm8731l_set_treble(int value) +void wmcodec_set_treble(int value) { (void)value; } -/* Nice shutdown of WM8975 codec */ -void wm8731l_close(void) +/* Nice shutdown of WM8731 codec */ +void wmcodec_close(void) { /* set DACMU=1 DEEMPH=0 */ - ipod_i2c_send(0x1a, 0xa, 0x8); + wm8731_write(DACCTRL, 0x8); /* ACTIVE=0 */ codec_set_active(0x0); /* line in mute left & right*/ - ipod_i2c_send(0x1a, 0x0 | 0x1, 0x80); + wm8731_write(LINVOL, 0x100 | 0x80); /* set DACSEL=0, MUTEMIC=1 */ - ipod_i2c_send(0x1a, 0x8, 0x2); + wm8731_write(0x4, 0x2); /* set POWEROFF=0 OUTPD=0 DACPD=1 */ - ipod_i2c_send(0x1a, 0xc, 0x6f); + wm8731_write(PWRMGMT, 0x6f); /* set POWEROFF=1 OUTPD=1 DACPD=1 */ - ipod_i2c_send(0x1a, 0xc, 0xff); + wm8731_write(PWRMGMT, 0xff); } /* Change the order of the noise shaper, 5th order is recommended above 32kHz */ -void wm8731l_set_nsorder(int order) +void wmcodec_set_nsorder(int order) { (void)order; } -/* */ -void wm8731l_set_sample_rate(int sampling_control) +void wmcodec_set_sample_rate(int sampling_control) { codec_set_active(0x0); - ipod_i2c_send(0x1a, 0x10, sampling_control); + wm8731_write(SAMPCTRL, sampling_control); codec_set_active(0x1); } -void wm8731l_enable_recording(bool source_mic) +void wmcodec_enable_recording(bool source_mic) { (void)source_mic; } -void wm8731l_disable_recording(void) +void wmcodec_disable_recording(void) { } -void wm8731l_set_recvol(int left, int right, int type) +void wmcodec_set_recvol(int left, int right, int type) { (void)left; (void)right; (void)type; } -void wm8731l_set_monitor(int enable) +void wmcodec_set_monitor(int enable) { (void)enable; } |