b8577dd582
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6204 a1c6a512-1295-4272-9138-f99709370657
145 lines
3.9 KiB
C
145 lines
3.9 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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* Copyright (C) 2005 by Andy Young
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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 "lcd.h"
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#include "cpu.h"
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#include "kernel.h"
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#include "thread.h"
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#include "power.h"
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#include "debug.h"
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#include "system.h"
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#include "sprintf.h"
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#include "button.h"
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#include "string.h"
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#include "file.h"
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#include "buffer.h"
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#include "i2c-h100.h"
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#include "uda1380.h"
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/* ------------------------------------------------- */
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/* Local functions and variables */
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/* ------------------------------------------------- */
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int uda1380_write_reg(unsigned char reg, unsigned short value);
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unsigned short uda1380_regs[0x30];
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/* Definition of a good (?) configuration to start with */
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/* Not enabling ADC for now.. */
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#define NUM_DEFAULT_REGS 13
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unsigned short uda1380_defaults[2*NUM_DEFAULT_REGS] =
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{
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REG_0, EN_DAC | EN_INT | EN_DEC | SYSCLK_256FS | WSPLL_25_50,
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REG_I2S, I2S_IFMT_IIS,
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REG_PWR, PON_PLL | PON_HP | PON_DAC | EN_AVC | PON_AVC | PON_BIAS,
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REG_AMIX, AMIX_RIGHT(0x10) | AMIX_LEFT(0x10), /* 00=max, 3f=mute */
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REG_MASTER_VOL, MASTER_VOL_LEFT(0x7f) | MASTER_VOL_RIGHT(0x7f), /* 00=max, ff=mute */
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REG_MIX_VOL, MIX_VOL_CHANNEL_1(0) | MIX_VOL_CHANNEL_2(0xff), /* 00=max, ff=mute */
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REG_EQ, 0,
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REG_MUTE, MUTE_CH2, /* Mute channel 2 (digital decimation filter) */
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REG_MIX_CTL, 0,
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REG_DEC_VOL, 0,
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REG_PGA, MUTE_ADC,
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REG_ADC, SKIP_DCFIL,
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REG_AGC, 0
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};
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/* Returns 0 if register was written or -1 if write failed */
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int uda1380_write_reg(unsigned char reg, unsigned short value)
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{
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unsigned char data[4];
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data[0] = UDA1380_ADDR;
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data[1] = reg;
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data[2] = value >> 8;
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data[3] = value & 0xff;
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if (i2c_write(1, data, 4) != 4)
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{
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DEBUGF("uda1380 error reg=0x%x", reg);
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return -1;
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}
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uda1380_regs[reg] = value;
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return 0;
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}
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/**
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* Sets the master volume
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*
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* \param vol Range [0..255] 0=max, 255=mute
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*
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*/
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int uda1380_setvol(int vol)
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{
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return uda1380_write_reg(REG_MASTER_VOL,
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MASTER_VOL_LEFT(vol) | MASTER_VOL_RIGHT(vol));
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}
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/**
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* Mute (mute=1) or enable sound (mute=0)
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*
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*/
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int uda1380_mute(int mute)
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{
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unsigned int value = uda1380_regs[REG_MUTE];
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if (mute)
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value = value | MUTE_MASTER;
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else
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value = value & ~MUTE_MASTER;
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return uda1380_write_reg(REG_MUTE, value);
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}
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/* Returns 0 if successful or -1 if some register failed */
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int uda1380_set_regs(void)
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{
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int i;
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memset(uda1380_regs, 0, sizeof(uda1380_regs));
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/* Initialize all registers */
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for (i=0; i<NUM_DEFAULT_REGS; i++)
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{
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unsigned char reg = uda1380_defaults[i*2+0];
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unsigned short value = uda1380_defaults[i*2+1];
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if (uda1380_write_reg(reg, value) == -1)
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return -1;
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}
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return 0;
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}
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/* Initialize UDA1380 codec with default register values (uda1380_defaults) */
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int uda1380_init(void)
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{
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if (uda1380_set_regs() == -1)
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return -1;
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return 0;
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}
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/* Nice shutdown of UDA1380 codec */
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void uda1380_close(void)
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{
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uda1380_write_reg(REG_PWR, 0); /* Disable power */
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uda1380_write_reg(REG_0, 0); /* Disable codec */
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}
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