91bacf363a
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15470 a1c6a512-1295-4272-9138-f99709370657
423 lines
10 KiB
C
423 lines
10 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Driver for AS3514 audio codec
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*
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* Copyright (c) 2007 Daniel Ankers
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* Copyright (c) 2007 Christian Gmeiner
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "cpu.h"
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#include "debug.h"
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#include "system.h"
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#include "audio.h"
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#include "audiohw.h"
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#include "i2s.h"
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#include "i2c-pp.h"
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const struct sound_settings_info audiohw_settings[] = {
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[SOUND_VOLUME] = {"dB", 0, 1, -74, 6, -25},
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/* HAVE_SW_TONE_CONTROLS */
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[SOUND_BASS] = {"dB", 0, 1, -24, 24, 0},
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[SOUND_TREBLE] = {"dB", 0, 1, -24, 24, 0},
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[SOUND_BALANCE] = {"%", 0, 1,-100, 100, 0},
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[SOUND_CHANNELS] = {"", 0, 1, 0, 5, 0},
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[SOUND_STEREO_WIDTH] = {"%", 0, 5, 0, 250, 100},
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[SOUND_MIC_GAIN] = {"dB", 1, 1, 0, 39, 23},
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[SOUND_LEFT_GAIN] = {"dB", 1, 1, 0, 31, 23},
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[SOUND_RIGHT_GAIN] = {"dB", 1, 1, 0, 31, 23},
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};
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/* Shadow registers */
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struct as3514_info
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{
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int vol_r; /* Cached volume level (R) */
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int vol_l; /* Cached volume level (L) */
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unsigned int regs[0x1e]; /* last audio register: PLLMODE 0x1d */
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} as3514;
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enum
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{
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SOURCE_DAC = 0,
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SOURCE_MIC1,
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SOURCE_LINE_IN1,
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SOURCE_LINE_IN1_ANALOG
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};
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static unsigned int source = SOURCE_DAC;
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/*
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* little helper method to set register values.
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* With the help of as3514.regs, we minimize i2c
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* traffic.
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*/
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static void as3514_write(unsigned int reg, unsigned int value)
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{
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if (pp_i2c_send(AS3514_I2C_ADDR, reg, value) != 2)
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{
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DEBUGF("as3514 error reg=0x%02x", reg);
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}
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if (reg < ARRAYLEN(as3514.regs))
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{
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as3514.regs[reg] = value;
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}
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else
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{
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DEBUGF("as3514 error reg=0x%02x", reg);
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}
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}
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/* Helpers to set/clear bits */
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static void as3514_write_or(unsigned int reg, unsigned int bits)
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{
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as3514_write(reg, as3514.regs[reg] | bits);
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}
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static void as3514_write_and(unsigned int reg, unsigned int bits)
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{
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as3514_write(reg, as3514.regs[reg] & bits);
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}
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/* convert tenth of dB volume to master volume register value */
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int tenthdb2master(int db)
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{
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/* +6 to -73.5dB in 1.5dB steps == 53 levels */
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if (db < VOLUME_MIN) {
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return 0x0;
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} else if (db >= VOLUME_MAX) {
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return 0x35;
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} else {
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return((db-VOLUME_MIN)/15); /* VOLUME_MIN is negative */
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}
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}
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int sound_val2phys(int setting, int value)
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{
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int result;
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switch(setting)
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{
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case SOUND_LEFT_GAIN:
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case SOUND_RIGHT_GAIN:
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case SOUND_MIC_GAIN:
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result = (value - 23) * 15;
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break;
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default:
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result = value;
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break;
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}
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return result;
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}
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void audiohw_reset(void);
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/*
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* Initialise the PP I2C and I2S.
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*/
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void audiohw_init(void)
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{
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unsigned int i;
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/* reset I2C */
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i2c_init();
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/* normal outputs for CDI and I2S pin groups */
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DEV_INIT2 &= ~0x300;
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/*mini2?*/
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DEV_INIT1 &=~0x3000000;
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/*mini2?*/
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/* device reset */
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DEV_RS |= DEV_I2S;
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DEV_RS &=~DEV_I2S;
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/* device enable */
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DEV_EN |= (DEV_I2S | 0x7);
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/* enable external dev clock clocks */
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DEV_EN |= 0x2;
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/* external dev clock to 24MHz */
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outl(inl(0x70000018) & ~0xc, 0x70000018);
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i2s_reset();
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/* Set ADC off, mixer on, DAC on, line out off, line in off, mic off */
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/* Turn on SUM, DAC */
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as3514_write(AUDIOSET1, (1 << 6) | (1 << 5));
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/* Set BIAS on, DITH on, AGC on, IBR_DAC max, LSP_LP on, IBR_LSP min */
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as3514_write(AUDIOSET2, (1 << 2) | (3 << 0));
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/* Set HPCM off, ZCU off*/
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as3514_write(AUDIOSET3, (1 << 2) | (1 << 0));
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/* Mute and disable speaker */
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as3514_write(LSP_OUT_R, 0);
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as3514_write(LSP_OUT_L, (1 << 7));
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/* set vol and set headphone over-current to 0 */
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as3514_write(HPH_OUT_R, (0x3 << 6) | 0x16);
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/* set default vol for headphone */
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as3514_write(HPH_OUT_L, 0x16);
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/* LRCK 24-48kHz */
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as3514_write(PLLMODE, 0x00);
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/* DAC_Mute_off */
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as3514_write_or(DAC_L, (1 << 6));
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/* M1_Sup_off */
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as3514_write_or(MIC1_L, (1 << 7));
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/* M2_Sup_off */
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as3514_write_or(MIC2_L, (1 << 7));
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/* read all reg values */
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for (i = 0; i < ARRAYLEN(as3514.regs); i++)
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{
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as3514.regs[i] = i2c_readbyte(AS3514_I2C_ADDR, i);
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}
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}
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void audiohw_postinit(void)
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{
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}
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/* Silently enable / disable audio output */
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void audiohw_enable_output(bool enable)
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{
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if (enable) {
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/* reset the I2S controller into known state */
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i2s_reset();
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as3514_write_or(HPH_OUT_L, (1 << 6)); /* power on */
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audiohw_mute(0);
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} else {
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audiohw_mute(1);
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as3514_write_and(HPH_OUT_L, ~(1 << 6)); /* power off */
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}
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}
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int audiohw_set_master_vol(int vol_l, int vol_r)
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{
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unsigned int hph_r = as3514.regs[HPH_OUT_R] & ~0x1f;
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unsigned int hph_l = as3514.regs[HPH_OUT_L] & ~0x1f;
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unsigned int mix_l, mix_r;
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unsigned int mix_reg_r, mix_reg_l;
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/* keep track of current setting */
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as3514.vol_l = vol_l;
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as3514.vol_r = vol_r;
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if (source == SOURCE_LINE_IN1_ANALOG) {
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mix_reg_r = LINE_IN1_R;
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mix_reg_l = LINE_IN1_L;
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} else {
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mix_reg_r = DAC_R;
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mix_reg_l = DAC_L;
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}
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mix_r = as3514.regs[mix_reg_r] & ~0x1f;
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mix_l = as3514.regs[mix_reg_l] & ~0x1f;
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/* we combine the mixer channel volume range with the headphone volume
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range */
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if (vol_r <= 0x16) {
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mix_r |= vol_r;
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/* hph_r - set 0 */
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} else {
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mix_r |= 0x16;
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hph_r += vol_r - 0x16;
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}
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if (vol_l <= 0x16) {
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mix_l |= vol_l;
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/* hph_l - set 0 */
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} else {
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mix_l |= 0x16;
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hph_l += vol_l - 0x16;
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}
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as3514_write(mix_reg_r, mix_r);
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as3514_write(mix_reg_l, mix_l);
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as3514_write(HPH_OUT_R, hph_r);
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as3514_write(HPH_OUT_L, hph_l);
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return 0;
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}
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int audiohw_set_lineout_vol(int vol_l, int vol_r)
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{
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as3514_write(LINE_OUT_R, vol_r);
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as3514_write(LINE_OUT_L, (1 << 6) | vol_l);
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return 0;
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}
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void audiohw_mute(bool mute)
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{
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if (mute) {
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as3514_write_or(HPH_OUT_L, (1 << 7));
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} else {
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as3514_write_and(HPH_OUT_L, ~(1 << 7));
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}
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}
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/* Nice shutdown of WM8758 codec */
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void audiohw_close(void)
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{
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/* mute headphones */
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audiohw_mute(true);
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/* turn off everything */
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as3514_write(AUDIOSET1, 0x0);
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}
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void audiohw_set_sample_rate(int sampling_control)
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{
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(void)sampling_control;
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}
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void audiohw_enable_recording(bool source_mic)
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{
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if (source_mic) {
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source = SOURCE_MIC1;
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/* Sync mixer volumes before switching inputs */
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audiohw_set_master_vol(as3514.vol_l, as3514.vol_r);
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/* ADCmux = Stereo Microphone */
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as3514_write_and(ADC_R, ~(0x3 << 6));
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/* MIC1_on, LIN1_off */
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as3514_write(AUDIOSET1,
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(as3514.regs[AUDIOSET1] & ~(1 << 2)) | (1 << 0));
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/* M1_AGC_off */
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as3514_write_and(MIC1_R, ~(1 << 7));
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} else {
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source = SOURCE_LINE_IN1;
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audiohw_set_master_vol(as3514.vol_l, as3514.vol_r);
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/* ADCmux = Line_IN1 */
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as3514_write(ADC_R,
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(as3514.regs[ADC_R] & ~(0x3 << 6)) | (0x1 << 6));
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/* MIC1_off, LIN1_on */
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as3514_write(AUDIOSET1,
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(as3514.regs[AUDIOSET1] & ~(1 << 0)) | (1 << 2));
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}
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/* ADC_Mute_off */
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as3514_write_or(ADC_L, (1 << 6));
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/* ADC_on */
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as3514_write_or(AUDIOSET1, (1 << 7));
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}
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void audiohw_disable_recording(void)
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{
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source = SOURCE_DAC;
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/* ADC_Mute_on */
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as3514_write_and(ADC_L, ~(1 << 6));
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/* ADC_off, LIN1_off, MIC_off */
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as3514_write_and(AUDIOSET1, ~((1 << 7) | (1 << 2) | (1 << 0)));
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audiohw_set_master_vol(as3514.vol_l, as3514.vol_r);
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}
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/**
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* Set recording volume
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*
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* Line in : 0 .. 23 .. 31 =>
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Volume -34.5 .. +00.0 .. +12.0 dB
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* Mic (left): 0 .. 23 .. 39 =>
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* Volume -34.5 .. +00.0 .. +24.0 dB
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*
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*/
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void audiohw_set_recvol(int left, int right, int type)
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{
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switch (type)
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{
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case AUDIO_GAIN_MIC:
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{
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/* Combine MIC gains seamlessly with ADC levels */
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unsigned int mic1_r = as3514.regs[MIC1_R] & ~(0x3 << 5);
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if (left >= 36) {
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/* M1_Gain = +40db, ADR_Vol = +7.5dB .. +12.0 dB =>
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+19.5 dB .. +24.0 dB */
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left -= 8;
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mic1_r |= (0x2 << 5);
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} else if (left >= 32) {
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/* M1_Gain = +34db, ADR_Vol = +7.5dB .. +12.0 dB =>
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+13.5 dB .. +18.0 dB */
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left -= 4;
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mic1_r |= (0x1 << 5);
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}
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/* M1_Gain = +28db, ADR_Vol = -34.5dB .. +12.0 dB =>
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-34.5 dB .. +12.0 dB */
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right = left;
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as3514_write(MIC1_R, mic1_r);
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break;
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}
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case AUDIO_GAIN_LINEIN:
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break;
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default:
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return;
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}
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as3514_write(ADC_R, (as3514.regs[ADC_R] & ~0x1f) | right);
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as3514_write(ADC_L, (as3514.regs[ADC_L] & ~0x1f) | left);
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}
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/**
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* Enable line in 1 analog monitoring
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*
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*/
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void audiohw_set_monitor(int enable)
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{
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/* LI1R_Mute_on - default */
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unsigned int line_in1_r = as3514.regs[LINE_IN1_R] & ~(1 << 5);
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/* LI1L_Mute_on - default */
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unsigned int line_in1_l = as3514.regs[LINE_IN1_L] & ~(1 << 5);
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/* LIN1_off - default */
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unsigned int audioset1 = as3514.regs[AUDIOSET1] & ~(1 << 2);
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if (enable) {
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source = SOURCE_LINE_IN1_ANALOG;
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/* LI1R_Mute_off */
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line_in1_r |= (1 << 5);
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/* LI1L_Mute_off */
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line_in1_l |= (1 << 5);
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/* LIN1_on */
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audioset1 |= (1 << 2);
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}
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as3514_write(AUDIOSET1, audioset1);
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as3514_write(LINE_IN1_R, line_in1_r);
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as3514_write(LINE_IN1_L, line_in1_l);
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/* Sync mixer volume */
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audiohw_set_master_vol(as3514.vol_l, as3514.vol_r);
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}
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