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

iPod mini 2G: Define correct audio codec, and fix WM8731 driver to work with PP5020. Audio is working now.

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9367 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2006-03-30 20:18:02 +00:00
parent d5c927d92f
commit 7e0ea2153c
7 changed files with 89 additions and 31 deletions
Download patch file Download diff file Expand all files Collapse all files

52
firmware/drivers/wm8731l.c
View file

@ -89,6 +89,27 @@ static void codec_set_active(int active)
*/
static void i2s_reset(void)
{
#if CONFIG_CPU == PP5020
/* I2S soft reset */
outl(inl(0x70002800) | 0x80000000, 0x70002800);
outl(inl(0x70002800) & ~0x80000000, 0x70002800);
/* BIT.FORMAT [11:10] = I2S (default) */
outl(inl(0x70002800) & ~0xc00, 0x70002800);
/* BIT.SIZE [9:8] = 16bit (default) */
outl(inl(0x70002800) & ~0x300, 0x70002800);
/* FIFO.FORMAT [6:4] = 32 bit LSB */
/* since BIT.SIZ < FIFO.FORMAT low 16 bits will be 0 */
outl(inl(0x70002800) | 0x30, 0x70002800);
/* RX_ATN_LVL=1 == when 12 slots full */
/* TX_ATN_LVL=1 == when 12 slots empty */
outl(inl(0x7000280c) | 0x33, 0x7000280c);
/* Rx.CLR = 1, TX.CLR = 1 */
outl(inl(0x7000280c) | 0x1100, 0x7000280c);
#elif CONFIG_CPU == PP5002
/* I2S device reset */
outl(inl(0xcf005030) | 0x80, 0xcf005030);
outl(inl(0xcf005030) & ~0x80, 0xcf005030);
@ -102,6 +123,7 @@ static void i2s_reset(void)
/* reset DAC and ADC fifo */
outl(inl(0xc000251c) | 0x30000, 0xc000251c);
#endif
}
/*
@ -112,6 +134,27 @@ int wmcodec_init(void) {
/* reset I2C */
i2c_init();
#if CONFIG_CPU == PP5020
/* normal outputs for CDI and I2S pin groups */
outl(inl(0x70000020) & ~0x300, 0x70000020);
/*mini2?*/
outl(inl(0x70000010) & ~0x3000000, 0x70000010);
/*mini2?*/
/* device reset */
outl(inl(0x60006004) | 0x800, 0x60006004);
outl(inl(0x60006004) & ~0x800, 0x60006004);
/* device enable */
outl(inl(0x6000600C) | 0x807, 0x6000600C);
/* enable external dev clock clocks */
outl(inl(0x6000600c) | 0x2, 0x6000600c);
/* external dev clock to 24MHz */
outl(inl(0x70000018) & ~0xc, 0x70000018);
#else
/* device reset */
outl(inl(0xcf005030) | 0x80, 0xcf005030);
outl(inl(0xcf005030) & ~0x80, 0xcf005030);
@ -135,6 +178,7 @@ int wmcodec_init(void) {
outl(inl(0xcf000008) | 0x8, 0xcf000008);
outl(inl(0xcf000018) | 0x8, 0xcf000018);
outl(inl(0xcf000028) & ~0x8, 0xcf000028);
#endif
return 0;
}
@ -142,7 +186,7 @@ int wmcodec_init(void) {
/* Silently enable / disable audio output */
void wmcodec_enable_output(bool enable)
{
if (enable)
if (enable)
{
/* reset the I2S controller into known state */
i2s_reset();
@ -151,9 +195,13 @@ void wmcodec_enable_output(bool enable)
codec_set_active(0x0);
#ifdef HAVE_WM8721
/* DACSEL=1 */
/* BYPASS=1 */
wm8731_write(0x4, 0x10);
#elif defined HAVE_WM8731
/* DACSEL=1, BYPASS=1 */
wm8731_write(0x4, 0x18);
#endif
/* set power register to POWEROFF=0 on OUTPD=0, DACPD=0 */
wm8731_write(PWRMGMT, 0x67);