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imx233: add the possibility to choose audio output coupling mode

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via target-defined option

Change-Id: I1bffbc7f17a11cf690a771057c2e4a7ba6a5faaa
Reviewed-on: http://gerrit.rockbox.org/678
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>
This commit is contained in:
Lorenzo Miori 2013-11-25 18:59:57 +01:00 • committed by Amaury Pouly
parent 85578cdc4d
commit 75c791dabf
7 changed files with 31 additions and 0 deletions
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13
firmware/target/arm/imx233/audioout-imx233.c
View file

@ -23,6 +23,15 @@
#include "rtc-imx233.h"
#include "pcm_sampr.h"
#include "string.h"
#include "audio-target.h"
#ifndef IMX233_AUDIO_COUPLING_MODE
#error You must define IMX233_AUDIO_COUPLING_MODE
#endif
#if IMX233_AUDIO_COUPLING_MODE != ACM_CAP && IMX233_AUDIO_COUPLING_MODE != ACM_CAPLESS
#error Invalid value for IMX233_AUDIO_COUPLING_MODE
#endif
static int hp_vol_l, hp_vol_r;
static bool input_line1;
@ -46,7 +55,11 @@ void imx233_audioout_preinit(void)
/* Enable DAC */
BF_CLR(AUDIOOUT_ANACLKCTRL, CLKGATE);
/* Set capless mode */
#if IMX233_AUDIO_COUPLING_MODE == ACM_CAP
BF_SET(AUDIOOUT_PWRDN, CAPLESS);
#else
BF_CLR(AUDIOOUT_PWRDN, CAPLESS);
#endif
/* Set word-length to 16-bit */
BF_SET(AUDIOOUT_CTRL, WORD_LENGTH);
/* Power up DAC */

8
firmware/target/arm/imx233/audioout-imx233.h
View file

@ -27,6 +27,14 @@
#include "regs/regs-audioout.h"
/* target-defined output stage coupling method
* its setting is IMX233_AUDIO_COUPLING_MODE and must be set for every target
* Use ACM_CAP if output stage (i.e. headphones) have output capacitors,
* ACM_CAPLESS (DC-coupled) otherwise.
*/
#define ACM_CAPLESS 0
#define ACM_CAP 1
struct imx233_audioout_info_t
{
// NOTE there is a convention here: dac -> dacvol -> dacmute

2
firmware/target/arm/imx233/creative-zen/audio-target.h
View file

@ -21,5 +21,7 @@
#ifndef __audio_target__
#define __audio_target__
#define IMX233_AUDIO_COUPLING_MODE ACM_CAPLESS
#endif /* __audio_target__ */

2
firmware/target/arm/imx233/creative-zenxfi2/audio-target.h
View file

@ -21,4 +21,6 @@
#ifndef __audio_target__
#define __audio_target__
#define IMX233_AUDIO_COUPLING_MODE ACM_CAPLESS
#endif /* __audio_target__ */

2
firmware/target/arm/imx233/creative-zenxfi3/audio-target.h
View file

@ -27,4 +27,6 @@
#define IMX233_AUDIO_SPKR_GATE_BANK 1
#define IMX233_AUDIO_SPKR_GATE_PIN 22
#define IMX233_AUDIO_COUPLING_MODE ACM_CAPLESS
#endif /* __audio_target__ */

2
firmware/target/arm/imx233/sansa-fuzeplus/audio-target.h
View file

@ -21,4 +21,6 @@
#ifndef __audio_target__
#define __audio_target__
#define IMX233_AUDIO_COUPLING_MODE ACM_CAPLESS
#endif /* __audio_target__ */

2
firmware/target/arm/imx233/sony-nwz/audio-target.h
View file

@ -21,4 +21,6 @@
#ifndef __audio_target__
#define __audio_target__
#define IMX233_AUDIO_COUPLING_MODE ACM_CAPLESS
#endif /* __audio_target__ */