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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Driver for AS3514 audio codec
*
* Copyright (c) 2007 Daniel Ankers
* Copyright (c) 2007 Christian Gmeiner
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "cpu.h"
#include "debug.h"
#include "system.h"
#include "audiohw.h"
#include "i2s.h"
#include "i2c-pp.h"
const struct sound_settings_info audiohw_settings[] = {
[SOUND_VOLUME] = {"dB", 0, 1, -74, 6, -25},
/* HAVE_SW_TONE_CONTROLS */
[SOUND_BASS] = {"dB", 0, 1, -24, 24, 0},
[SOUND_TREBLE] = {"dB", 0, 1, -24, 24, 0},
[SOUND_BALANCE] = {"%", 0, 1,-100, 100, 0},
[SOUND_CHANNELS] = {"", 0, 1, 0, 5, 0},
[SOUND_STEREO_WIDTH] = {"%", 0, 1, 0, 255, 100},
};
/* Shadow registers */
int as3514_regs[0x1E]; /* last audio register: PLLMODE 0x1d */
/*
* little helper method to set register values.
* With the help of as3514_regs, we minimize i2c
* traffic.
*/
static void as3514_write(int reg, int value)
{
if (pp_i2c_send(AS3514_I2C_ADDR, reg, value) != 2)
{
DEBUGF("as3514 error reg=0x%x", reg);
}
if ((unsigned int)reg < sizeof(as3514_regs) / sizeof(int))
{
as3514_regs[reg] = value;
}
else
{
DEBUGF("as3514 error reg=0x%x", reg);
}
}
/* convert tenth of dB volume to master volume register value */
int tenthdb2master(int db)
{
/* +6 to -73.5dB in 1.5dB steps == 53 levels */
if (db < VOLUME_MIN) {
return 0x0;
} else if (db >= VOLUME_MAX) {
return 0x35;
} else {
return((db-VOLUME_MIN)/15); /* VOLUME_MIN is negative */
}
}
void audiohw_reset(void);
/*
* Initialise the PP I2C and I2S.
*/
int audiohw_init(void)
{
unsigned int i;
/* reset I2C */
i2c_init();
/* normal outputs for CDI and I2S pin groups */
DEV_INIT &= ~0x300;
/*mini2?*/
outl(inl(0x70000010) & ~0x3000000, 0x70000010);
/*mini2?*/
/* device reset */
DEV_RS |= 0x800;
DEV_RS &=~0x800;
/* device enable */
DEV_EN |= 0x807;
/* enable external dev clock clocks */
DEV_EN |= 0x2;
/* external dev clock to 24MHz */
outl(inl(0x70000018) & ~0xc, 0x70000018);
i2s_reset();
/* Set ADC off, mixer on, DAC on, line out off, line in off, mic off */
as3514_write(AUDIOSET1, 0x64); /* Turn on SUM, DAC, LineIn 1 */
as3514_write(AUDIOSET3, 0x5); /* Set HPCM off, ZCU off*/
as3514_write(HPH_OUT_R, 0xc0 | 0x16); /* set vol and set speaker over-current to 0 */
as3514_write(HPH_OUT_L, 0x16); /* set default vol for headphone */
#if 0
as3514_write(LINE_IN1_R, 0x36); /* unmute lineIn 1 and set gain */
as3514_write(LINE_IN1_L, 0x36); /* unmute lineIn 1 and set gain */
#endif
as3514_write(PLLMODE, 0x00);
/* read all reg values */
for (i = 0; i < sizeof(as3514_regs) / sizeof(int); i++)
{
as3514_regs[i] = i2c_readbyte(AS3514_I2C_ADDR, i);
}
return 0;
}
void audiohw_postinit(void)
{
}
/* Silently enable / disable audio output */
void audiohw_enable_output(bool enable)
{
int curr;
curr = as3514_regs[HPH_OUT_L];
if (enable)
{
/* reset the I2S controller into known state */
i2s_reset();
as3514_write(HPH_OUT_L, curr | 0x40); /* power on */
audiohw_mute(0);
} else {
audiohw_mute(1);
as3514_write(HPH_OUT_L, curr & ~(0x40)); /* power off */
}
}
int audiohw_set_master_vol(int vol_l, int vol_r)
{
int hph_r = as3514_regs[HPH_OUT_R] & ~0x1f;
int hph_l = as3514_regs[HPH_OUT_L] & ~0x1f;
/* we are controling dac volume instead of headphone volume,
as the volume is bigger.
HDP: 1.07 dB gain
DAC: 6 dB gain
*/
if(vol_r <= 0x16)
{
as3514_write(DAC_R, vol_r);
as3514_write(HPH_OUT_R, hph_r); /* set 0 */
}
else
{
as3514_write(DAC_R, 0x16);
as3514_write(HPH_OUT_R, hph_r + (vol_r - 0x16));
}
if(vol_l <= 0x16)
{
as3514_write(DAC_L, 0x40 + vol_l);
as3514_write(HPH_OUT_L, hph_l); /* set 0 */
}
else
{
as3514_write(DAC_L, 0x40 + 0x16);
as3514_write(HPH_OUT_L, hph_l + (vol_l - 0x16));
}
return 0;
}
int audiohw_set_lineout_vol(int vol_l, int vol_r)
{
as3514_write(LINE_OUT_R, vol_r);
as3514_write(LINE_OUT_L, 0x40 | vol_l);
return 0;
}
int audiohw_mute(int mute)
{
int curr;
curr = as3514_regs[HPH_OUT_L];
if (mute)
{
as3514_write(HPH_OUT_L, curr | 0x80);
} else {
as3514_write(HPH_OUT_L, curr & ~(0x80));
}
return 0;
}
/* Nice shutdown of WM8758 codec */
void audiohw_close(void)
{
/* mute headphones */
audiohw_mute(1);
/* turn off everything */
as3514_write(AUDIOSET1, 0x0);
}
void audiohw_set_sample_rate(int sampling_control)
{
(void)sampling_control;
}
void audiohw_enable_recording(bool source_mic)
{
(void)source_mic;
}
void audiohw_disable_recording(void)
{
}
void audiohw_set_recvol(int left, int right, int type)
{
(void)left;
(void)right;
(void)type;
}
void audiohw_set_monitor(int enable)
{
(void)enable;
}
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