erosq: Tweak volume scale to be approximately correct

Tested on eros q, everything measured from line out,
open circuit.

- volume steps were approximately double the dB they
  were labelled as, so "-2 dB" would result in a change
  of about -4 dB from maximum (0, +6.2dBV)
- maximum volume defining the line out volume only
  changed every 10 values, and then was not close
  to correct- "-10 dB" resulted in -2.5 dB from maximum

This gets the volume dB approximately correct, and
maximum volume correctly sets the line out volume.
I was unable to get odd values in the max volume
to work, so set the step size to 2 instead of one.

For "consumer level" (-10dBV), set to -16.
For "Pro level" (+4dBu -> ~1.8dBV), set to -4.

Change-Id: I898b85d768153579a893b23551019af88f865d21

1 files changed, 1 insertions, 1 deletions

diff --git a/firmware/export/erosqlinux_codec.h b/firmware/export/erosqlinux_codec.h
index c337bb78c7..b6ab58fa74 100644
--- a/firmware/export/erosqlinux_codec.h
+++ b/firmware/export/erosqlinux_codec.h
@@ -3,7 +3,7 @@
 
 #define AUDIOHW_CAPS (LINEOUT_CAP)
 
-AUDIOHW_SETTING(VOLUME, "dB", 0,  1, -43, 0, -20)
+AUDIOHW_SETTING(VOLUME, "dB", 0,  2, -74, 0, -40)
 
 //#define AUDIOHW_NEEDS_INITIAL_UNMUTE