devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

MPIO HD300: vastly improve sound quality. This unfortunately means reverting r28797 which introduced poping noise

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30904 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Marcin Bukat 2011-11-05 14:01:22 +00:00
parent 9310fc0b4c
commit f4b74b269a
2 changed files with 17 additions and 30 deletions
Download patch file Download diff file Expand all files Collapse all files

26
firmware/drivers/audio/wm8751.c
View file

@ -219,20 +219,22 @@ static void audiohw_mute(bool mute)
/* Reset and power up the WM8751 */
void audiohw_preinit(void)
{
#ifdef MROBE_100
#if defined(MROBE_100)
/* controls headphone ouput */
GPIOL_ENABLE |= 0x10;
GPIOL_OUTPUT_EN |= 0x10;
GPIOL_OUTPUT_VAL |= 0x10; /* disable */
#endif
#ifdef MPIO_HD200
#elif defined(MPIO_HD200)
/* control headphone output
* disabled on startup
*/
and_l(~(1<<25),&GPIO1_OUT);
and_l(~(1<<25), &GPIO1_OUT);
or_l((1<<25), &GPIO1_ENABLE);
or_l((1<<25), &GPIO1_FUNCTION);
#elif defined(MPIO_HD300)
and_l(~(1<<5), &GPIO1_OUT);
or_l((1<<5), &GPIO1_ENABLE);
or_l((1<<5), &GPIO1_FUNCTION);
#endif
/*
@ -322,15 +324,15 @@ void audiohw_postinit(void)
audiohw_mute(false);
#ifdef MROBE_100
#if defined(MROBE_100)
/* enable headphone output */
GPIOL_OUTPUT_VAL &= ~0x10;
GPIOL_OUTPUT_EN |= 0x10;
#endif
#ifdef MPIO_HD200
#elif defined(MPIO_HD200)
/* enable headphone output */
or_l((1<<25),&GPIO1_OUT);
or_l((1<<25), &GPIO1_OUT);
#elif defined(MPIO_HD300)
or_l((1<<5), &GPIO1_OUT);
#endif
}
@ -394,9 +396,11 @@ void audiohw_close(void)
/* 1. Set DACMU = 1 to soft-mute the audio DACs. */
audiohw_mute(true);
#ifdef MPIO_HD200
#if defined(MPIO_HD200)
/* disable headphone out */
and_l(~(1<<25), &GPIO1_OUT);
#elif defined(MPIO_HD300)
and_l(~(1<<5), &GPIO1_OUT);
#endif
/* 2. Disable all output buffers. */