diff options
Diffstat (limited to 'firmware/drivers/uda1380.c')
| -rw-r--r-- | firmware/drivers/uda1380.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/firmware/drivers/uda1380.c b/firmware/drivers/uda1380.c index 4eb04d1ba3..bcc94474fa 100644 --- a/firmware/drivers/uda1380.c +++ b/firmware/drivers/uda1380.c @@ -38,6 +38,8 @@ int uda1380_write_reg(unsigned char reg, unsigned short value); unsigned short uda1380_regs[0x30]; +short uda1380_balance; +short uda1380_volume; /* Definition of a playback configuration to start with */ @@ -90,8 +92,23 @@ int uda1380_write_reg(unsigned char reg, unsigned short value) */ int uda1380_setvol(int vol) { + int vol_l, vol_r; + + uda1380_volume = vol; + /* Simple linear volume crossfade curves */ + vol_l = MAX(uda1380_balance*0xff/100, 0); + vol_r = MAX(-uda1380_balance*0xff/100, 0); return uda1380_write_reg(REG_MASTER_VOL, - MASTER_VOL_LEFT(vol) | MASTER_VOL_RIGHT(vol)); + MASTER_VOL_LEFT(vol_l) | MASTER_VOL_RIGHT(vol_r)); +} + +/** + * Sets stereo balance + */ +void uda1380_set_balance(int bal) +{ + uda1380_balance = bal; + uda1380_setvol(uda1380_volume); } /** @@ -165,7 +182,9 @@ int uda1380_init(void) { if (uda1380_set_regs() == -1) return -1; - + uda1380_balance = 0; + uda1380_volume = 0x20; /* Taken from uda1380_defaults */ + return 0; } |