imx233: revert volumes to 1dB resolution

Using a better resolution causes havoc in the user interface
because it doesn't properly handle steps and people start to
believe I am responsible for all this mess.

Change-Id: I02b68dce5802692efde3da226eeeb49e4995f97a

2 files changed, 6 insertions, 6 deletions

diff --git a/firmware/drivers/audio/imx233-codec.c b/firmware/drivers/audio/imx233-codec.c
index 7406a8d076..94a1218d5e 100644
--- a/firmware/drivers/audio/imx233-codec.c
+++ b/firmware/drivers/audio/imx233-codec.c
@@ -46,6 +46,7 @@ void audiohw_close(void)
     imx233_audioin_close();
 }
 
+/* volume in centibels */
 void audiohw_set_volume(int vol_l, int vol_r)
 {
     imx233_audioout_set_hp_vol(vol_l / 5, vol_r / 5);
@@ -71,6 +72,7 @@ void audiohw_disable_recording(void)
     imx233_audioin_close();
 }
 
+/* volume in centibels */
 void audiohw_set_recvol(int left, int right, int type)
 {
     left /= 5;
diff --git a/firmware/export/imx233-codec.h b/firmware/export/imx233-codec.h
index a6f244517e..f5f58e246b 100644
--- a/firmware/export/imx233-codec.h
+++ b/firmware/export/imx233-codec.h
@@ -27,20 +27,18 @@
 #define AUDIOHW_CAPS    (DEPTH_3D_CAP | BASS_CAP | TREBLE_CAP | \
                          LIN_GAIN_CAP | MIC_GAIN_CAP)
 
-/* Work with half dB since the i.MX233 doesn't have a better resolution */
-
 /* minimum is -57.5dB and max is 6dB in DAC mode
  * and -51.5dB / 12dB in Line1 mode */
-AUDIOHW_SETTING(VOLUME,     "dB", 1, 5,-580, 120, -250)
+AUDIOHW_SETTING(VOLUME,     "dB", 0, 1, -58,  12,  -25)
 /* HAVE_SW_TONE_CONTROLS */
 #ifdef HAVE_RECORDING
 /* Depending on the input, we have three available volumes to tweak:
  * - adc volume: -100dB -> -0.5dB in 0.5dB steps
  * - mux gain: 0dB -> 22.5dB in 1.5dB steps
  * - mic gain: 0dB -> 40dB in 10dB steps (except for 10) */
-AUDIOHW_SETTING(LEFT_GAIN,  "dB", 1, 5,-1000, 220,   0)
-AUDIOHW_SETTING(RIGHT_GAIN, "dB", 1, 5,-1000, 220,   0)
-AUDIOHW_SETTING(MIC_GAIN,   "dB", 1, 5,-1000, 600, 200)
+AUDIOHW_SETTING(LEFT_GAIN,  "dB", 0, 1, -100,  22,   0)
+AUDIOHW_SETTING(RIGHT_GAIN, "dB", 0, 1, -100,  22,   0)
+AUDIOHW_SETTING(MIC_GAIN,   "dB", 0, 1, -100,  60,  20)
 #endif /* HAVE_RECORDING */
 /* i.MX233 has four settings: 0dB, 3dB, 4.5dB, 6dB so fake 1.5dB steps */
 AUDIOHW_SETTING(DEPTH_3D,   "dB", 1,15,   0,   60,   0)