diff options
Diffstat (limited to 'firmware/drivers/audio/as3514.c')
| -rw-r--r-- | firmware/drivers/audio/as3514.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/firmware/drivers/audio/as3514.c b/firmware/drivers/audio/as3514.c index e1c7f6575e..1f79277423 100644 --- a/firmware/drivers/audio/as3514.c +++ b/firmware/drivers/audio/as3514.c @@ -31,6 +31,16 @@ #include "i2s.h" #include "ascodec.h" +#if CONFIG_CPU == AS3525v2 +/* Headphone volume goes from -81.0 ... +6dB */ +#define VOLUME_MIN -820 +#define VOLUME_MAX 60 +#else +/* Headphone volume goes from -73.5 ... +6dB */ +#define VOLUME_MIN -740 +#define VOLUME_MAX 60 +#endif + /* * This drivers supports: * as3514 , as used in the PP targets @@ -99,13 +109,12 @@ static void as3514_write_masked(unsigned int reg, unsigned int bits, /* convert tenth of dB volume to master volume register value */ static int vol_tenthdb2hw(int db) { - /* +6 to -73.5dB (or -81.0 dB) in 1.5dB steps == 53 (or 58) levels */ - if (db < VOLUME_MIN) { + if (db <= VOLUME_MIN) { return 0x0; } else if (db > VOLUME_MAX) { - return (VOLUME_MAX-VOLUME_MIN)/15; + return (VOLUME_MAX - VOLUME_MIN) / 15; } else { - return((db-VOLUME_MIN)/15); /* VOLUME_MIN is negative */ + return (db - VOLUME_MIN) / 15; } } |