Nyaaori/rockbox
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
rockbox/firmware/drivers/audio/as3514.c
Bertrik Sikken db2d61f4ea Killed unnecessary global variables by making them static. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17184 a1c6a512-1295-4272-9138-f99709370657
2008-04-20 10:24:15 +00:00

418 lines
11 KiB
C
Raw Blame History

/***************************************************************************
* __________ __ ___.
* 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 "audio.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, 5, 0, 250, 100},
[SOUND_MIC_GAIN] = {"dB", 1, 1, 0, 39, 23},
[SOUND_LEFT_GAIN] = {"dB", 1, 1, 0, 31, 23},
[SOUND_RIGHT_GAIN] = {"dB", 1, 1, 0, 31, 23},
};
/* Shadow registers */
static struct as3514_info
{
int vol_r; /* Cached volume level (R) */
int vol_l; /* Cached volume level (L) */
unsigned int regs[0x1e]; /* last audio register: PLLMODE 0x1d */
} as3514;
enum
{
SOURCE_DAC = 0,
SOURCE_MIC1,
SOURCE_LINE_IN1,
SOURCE_LINE_IN1_ANALOG
};
static unsigned int source = SOURCE_DAC;
/*
* little helper method to set register values.
* With the help of as3514.regs, we minimize i2c
* traffic.
*/
static void as3514_write(unsigned int reg, unsigned int value)
{
if (pp_i2c_send(AS3514_I2C_ADDR, reg, value) != 2)
{
DEBUGF("as3514 error reg=0x%02x", reg);
}
if (reg < ARRAYLEN(as3514.regs))
{
as3514.regs[reg] = value;
}
else
{
DEBUGF("as3514 error reg=0x%02x", reg);
}
}
/* Helpers to set/clear bits */
static void as3514_write_or(unsigned int reg, unsigned int bits)
{
as3514_write(reg, as3514.regs[reg] | bits);
}
static void as3514_write_and(unsigned int reg, unsigned int bits)
{
as3514_write(reg, as3514.regs[reg] & bits);
}
/* 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 */
}
}
int sound_val2phys(int setting, int value)
{
int result;
switch(setting)
{
case SOUND_LEFT_GAIN:
case SOUND_RIGHT_GAIN:
case SOUND_MIC_GAIN:
result = (value - 23) * 15;
break;
default:
result = value;
break;
}
return result;
}
/*
* Initialise the PP I2C and I2S.
*/
void audiohw_init(void)
{
unsigned int i;
/* normal outputs for CDI and I2S pin groups */
DEV_INIT2 &= ~0x300;
/*mini2?*/
DEV_INIT1 &=~0x3000000;
/*mini2?*/
/* device reset */
DEV_RS |= DEV_I2S;
DEV_RS &=~DEV_I2S;
/* I2S device reset */
DEV_RS |= DEV_I2S;
DEV_RS &=~DEV_I2S;
/* I2S device enable */
DEV_EN |= DEV_I2S;
/* enable external dev clock clocks */
DEV_EN |= DEV_EXTCLOCKS;
/* 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 */
/* Turn on SUM, DAC */
as3514_write(AS3514_AUDIOSET1, (1 << 6) | (1 << 5));
/* Set BIAS on, DITH on, AGC on, IBR_DAC max, LSP_LP on, IBR_LSP min */
as3514_write(AS3514_AUDIOSET2, (1 << 2) | (3 << 0));
/* Set HPCM off, ZCU off*/
as3514_write(AS3514_AUDIOSET3, (1 << 2) | (1 << 0));
/* Mute and disable speaker */
as3514_write(AS3514_LSP_OUT_R, 0);
as3514_write(AS3514_LSP_OUT_L, (1 << 7));
/* set vol and set headphone over-current to 0 */
as3514_write(AS3514_HPH_OUT_R, (0x3 << 6) | 0x16);
/* set default vol for headphone */
as3514_write(AS3514_HPH_OUT_L, 0x16);
/* LRCK 24-48kHz */
as3514_write(AS3514_PLLMODE, 0x00);
/* DAC_Mute_off */
as3514_write_or(AS3514_DAC_L, (1 << 6));
/* M1_Sup_off */
as3514_write_or(AS3514_MIC1_L, (1 << 7));
/* M2_Sup_off */
as3514_write_or(AS3514_MIC2_L, (1 << 7));
/* read all reg values */
for (i = 0; i < ARRAYLEN(as3514.regs); i++)
{
as3514.regs[i] = i2c_readbyte(AS3514_I2C_ADDR, i);
}
}
void audiohw_postinit(void)
{
}
/* Silently enable / disable audio output */
void audiohw_enable_output(bool enable)
{
if (enable) {
/* reset the I2S controller into known state */
i2s_reset();
as3514_write_or(AS3514_HPH_OUT_L, (1 << 6)); /* power on */
audiohw_mute(0);
} else {
audiohw_mute(1);
as3514_write_and(AS3514_HPH_OUT_L, ~(1 << 6)); /* power off */
}
}
void audiohw_set_master_vol(int vol_l, int vol_r)
{
unsigned int hph_r = as3514.regs[AS3514_HPH_OUT_R] & ~0x1f;
unsigned int hph_l = as3514.regs[AS3514_HPH_OUT_L] & ~0x1f;
unsigned int mix_l, mix_r;
unsigned int mix_reg_r, mix_reg_l;
/* keep track of current setting */
as3514.vol_l = vol_l;
as3514.vol_r = vol_r;
if (source == SOURCE_LINE_IN1_ANALOG) {
mix_reg_r = AS3514_LINE_IN1_R;
mix_reg_l = AS3514_LINE_IN1_L;
} else {
mix_reg_r = AS3514_DAC_R;
mix_reg_l = AS3514_DAC_L;
}
mix_r = as3514.regs[mix_reg_r] & ~0x1f;
mix_l = as3514.regs[mix_reg_l] & ~0x1f;
/* we combine the mixer channel volume range with the headphone volume
range */
if (vol_r <= 0x16) {
mix_r |= vol_r;
/* hph_r - set 0 */
} else {
mix_r |= 0x16;
hph_r += vol_r - 0x16;
}
if (vol_l <= 0x16) {
mix_l |= vol_l;
/* hph_l - set 0 */
} else {
mix_l |= 0x16;
hph_l += vol_l - 0x16;
}
as3514_write(mix_reg_r, mix_r);
as3514_write(mix_reg_l, mix_l);
as3514_write(AS3514_HPH_OUT_R, hph_r);
as3514_write(AS3514_HPH_OUT_L, hph_l);
}
void audiohw_set_lineout_vol(int vol_l, int vol_r)
{
as3514_write(AS3514_LINE_OUT_R, vol_r);
as3514_write(AS3514_LINE_OUT_L, (1 << 6) | vol_l);
}
void audiohw_mute(bool mute)
{
if (mute) {
as3514_write_or(AS3514_HPH_OUT_L, (1 << 7));
} else {
as3514_write_and(AS3514_HPH_OUT_L, ~(1 << 7));
}
}
/* Nice shutdown of WM8758 codec */
void audiohw_close(void)
{
/* mute headphones */
audiohw_mute(true);
/* turn off everything */
as3514_write(AS3514_AUDIOSET1, 0x0);
}
void audiohw_set_sample_rate(int sampling_control)
{
(void)sampling_control;
}
void audiohw_enable_recording(bool source_mic)
{
if (source_mic) {
source = SOURCE_MIC1;
/* Sync mixer volumes before switching inputs */
audiohw_set_master_vol(as3514.vol_l, as3514.vol_r);
/* ADCmux = Stereo Microphone */
as3514_write_and(AS3514_ADC_R, ~(0x3 << 6));
/* MIC1_on, LIN1_off */
as3514_write(AS3514_AUDIOSET1,
(as3514.regs[AS3514_AUDIOSET1] & ~(1 << 2)) | (1 << 0));
/* M1_AGC_off */
as3514_write_and(AS3514_MIC1_R, ~(1 << 7));
} else {
source = SOURCE_LINE_IN1;
audiohw_set_master_vol(as3514.vol_l, as3514.vol_r);
/* ADCmux = Line_IN1 */
as3514_write(AS3514_ADC_R,
(as3514.regs[AS3514_ADC_R] & ~(0x3 << 6)) | (0x1 << 6));
/* MIC1_off, LIN1_on */
as3514_write(AS3514_AUDIOSET1,
(as3514.regs[AS3514_AUDIOSET1] & ~(1 << 0)) | (1 << 2));
}
/* ADC_Mute_off */
as3514_write_or(AS3514_ADC_L, (1 << 6));
/* ADC_on */
as3514_write_or(AS3514_AUDIOSET1, (1 << 7));
}
void audiohw_disable_recording(void)
{
source = SOURCE_DAC;
/* ADC_Mute_on */
as3514_write_and(AS3514_ADC_L, ~(1 << 6));
/* ADC_off, LIN1_off, MIC_off */
as3514_write_and(AS3514_AUDIOSET1, ~((1 << 7) | (1 << 2) | (1 << 0)));
audiohw_set_master_vol(as3514.vol_l, as3514.vol_r);
}
/**
* Set recording volume
*
* Line in : 0 .. 23 .. 31 =>
Volume -34.5 .. +00.0 .. +12.0 dB
* Mic (left): 0 .. 23 .. 39 =>
* Volume -34.5 .. +00.0 .. +24.0 dB
*
*/
void audiohw_set_recvol(int left, int right, int type)
{
switch (type)
{
case AUDIO_GAIN_MIC:
{
/* Combine MIC gains seamlessly with ADC levels */
unsigned int mic1_r = as3514.regs[AS3514_MIC1_R] & ~(0x3 << 5);
if (left >= 36) {
/* M1_Gain = +40db, ADR_Vol = +7.5dB .. +12.0 dB =>
+19.5 dB .. +24.0 dB */
left -= 8;
mic1_r |= (0x2 << 5);
} else if (left >= 32) {
/* M1_Gain = +34db, ADR_Vol = +7.5dB .. +12.0 dB =>
+13.5 dB .. +18.0 dB */
left -= 4;
mic1_r |= (0x1 << 5);
}
/* M1_Gain = +28db, ADR_Vol = -34.5dB .. +12.0 dB =>
-34.5 dB .. +12.0 dB */
right = left;
as3514_write(AS3514_MIC1_R, mic1_r);
break;
}
case AUDIO_GAIN_LINEIN:
break;
default:
return;
}
as3514_write(AS3514_ADC_R, (as3514.regs[AS3514_ADC_R] & ~0x1f) | right);
as3514_write(AS3514_ADC_L, (as3514.regs[AS3514_ADC_L] & ~0x1f) | left);
}
/**
* Enable line in 1 analog monitoring
*
*/
void audiohw_set_monitor(bool enable)
{
/* LI1R_Mute_on - default */
unsigned int line_in1_r = as3514.regs[AS3514_LINE_IN1_R] & ~(1 << 5);
/* LI1L_Mute_on - default */
unsigned int line_in1_l = as3514.regs[AS3514_LINE_IN1_L] & ~(1 << 5);
/* LIN1_off - default */
unsigned int audioset1 = as3514.regs[AS3514_AUDIOSET1] & ~(1 << 2);
if (enable) {
source = SOURCE_LINE_IN1_ANALOG;
/* LI1R_Mute_off */
line_in1_r |= (1 << 5);
/* LI1L_Mute_off */
line_in1_l |= (1 << 5);
/* LIN1_on */
audioset1 |= (1 << 2);
}
as3514_write(AS3514_AUDIOSET1, audioset1);
as3514_write(AS3514_LINE_IN1_R, line_in1_r);
as3514_write(AS3514_LINE_IN1_L, line_in1_l);
/* Sync mixer volume */
audiohw_set_master_vol(as3514.vol_l, as3514.vol_r);
}
Reference in a new issue View git blame Copy permalink