rockbox/firmware/drivers/audio/eros_qn_codec.c
Dana Conrad 3e7a09cb0d New Port: Eros Q Native
What works:
- LCD: 16-bit RGB565
- all buttons, including scrollwheel
- SD Card
- Battery level and charging/not charging status
- USB
- audio
- sample rate switching
- HP / LO detect, with "safe" fixed LO volume -
   LO volume will only be put to user-defined max volume
   if headphones are not present.
- rtc
- Plugins build, tried a couple and they seem OK
- Bootloader, installable to nand via usbboot

What doesn't work:
- Dual Boot
- power on/off has intermittent, low volume audio click
   (sometimes it's completely silent, sometimes there's
    a click)
- Audio uses 16-bit volume scaling, so clicking/popping
   is pretty bad at lower volumes - need 32 bit volume
   scaling, 24 bit I2S data
- USB HID keys not yet defined
- no jztool support

Unknowns:
- Stereo Switch pins: Direction select, AC_DC
   (probably not even hooked up)
- What is the actual purpose of the Stereo Swtich?
- How does the bluetooth module connect?

"Someday" stuff:
- get LCD working at higher bit depth
- Bluetooth

Change-Id: I70dda8fc092c6e3f4352f2245e4164193f803c33
2021-07-18 12:14:35 +00:00

65 lines
1.9 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2021 Andrew Ryabinin, Dana Conrad
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "system.h"
#include "eros_qn_codec.h"
#include "config.h"
#include "audio.h"
#include "audiohw.h"
#include "settings.h"
#include "pcm_sw_volume.h"
static long int vol_l_hw = 0;
static long int vol_r_hw = 0;
void pcm5102_set_outputs(void)
{
audiohw_set_volume(vol_l_hw, vol_r_hw);
}
/* this makes less sense here than it does in the audiohw-*.c file,
* but we need access to settings.h */
void audiohw_set_volume(int vol_l, int vol_r)
{
int l, r;
vol_l_hw = vol_l;
vol_r_hw = vol_r;
l = vol_l;
r = vol_r;
#if (defined(HAVE_HEADPHONE_DETECTION) && defined(HAVE_LINEOUT_DETECTION))
/* make sure headphones aren't present - don't want to
* blow out our eardrums cranking it to full */
if (lineout_inserted() && !headphones_inserted())
{
l = r = global_settings.volume_limit * 10;
}
else
{
l = vol_l;
r = vol_r;
}
#endif
pcm_set_master_volume(l, r);
}