forked from len0rd/rockbox
Ak4537: Optimization of the code.
Change-Id: I98e25d7177b24b277a79d8bf8d494dac26553c2c
This commit is contained in:
Szymon Dziok
parent
f734eedc1f
commit
fb373e1f50
1 changed files with 63 additions and 77 deletions
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@ -221,20 +221,63 @@ void audiohw_set_frequency(int fsel)
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}
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}
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#if defined(HAVE_RECORDING)
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#if defined(HAVE_RECORDING)
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void audiohw_set_recsrc(int source)
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void akc_disable_mic(void)
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{
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{
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switch(source)
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{
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case AUDIO_SRC_PLAYBACK:
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/* disable mic power supply */
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/* disable mic power supply */
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#if defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925)
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#if defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925)
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akc_clear(AK4537_MIC, MPWRE);
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akc_clear(AK4537_MIC, MPWRE);
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#else
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#else
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akc_clear(AK4537_MIC, MPWRI);
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akc_clear(AK4537_MIC, MPWRI);
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#endif
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#endif
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/* power down ADC, mic preamp and line amp */
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/* power down mic preamp */
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akc_clear(AK4537_PM1, PMADL | PMMICL | PMIPGL);
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akc_clear(AK4537_PM1, PMMICL);
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akc_clear(AK4537_PM3, PMADR | PMMICR | PMIPGR);
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akc_clear(AK4537_PM3, PMMICR);
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}
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void akc_enable_mic(void)
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{
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/* enable mic power supply */
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#if defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925)
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/* additionally select external mic */
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akc_set(AK4537_MIC, MPWRE | MSEL);
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#else
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akc_set(AK4537_MIC, MPWRI);
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#endif
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/* power up mic preamp */
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akc_set(AK4537_PM1, PMMICL);
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}
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void akc_setup_input(unsigned linesel, unsigned gcontrol)
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{
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/* select line1 or line2 input */
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akc_write_masked(AK4537_PM3, linesel, INL | INR);
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/* route ALC output to ADC input */
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akc_set(AK4537_MIC, MICAD);
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/* set ALC (automatic level control) to manual mode */
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akc_clear(AK4537_ALC1, ALC1);
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/* set gain control to dependent or independent left & right */
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akc_write_masked(AK4537_MIC, gcontrol, IPGAC);
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/* power up left channel ADC and line in */
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akc_set(AK4537_PM1, PMADL | PMIPGL);
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/* power up right channel ADC and line in */
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akc_set(AK4537_PM3, PMADR | PMIPGR);
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/* ADC -> DAC, external data to DAC ignored */
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akc_set(AK4537_MODE2, LOOP);
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}
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void audiohw_set_recsrc(int source)
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{
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switch(source)
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{
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case AUDIO_SRC_PLAYBACK:
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/* disable microphone */
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akc_disable_mic();
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/* power down ADC and line amp */
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akc_clear(AK4537_PM1, PMADL | PMIPGL);
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akc_clear(AK4537_PM3, PMADR | PMIPGR);
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/* break ADC -> DAC connection */
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/* break ADC -> DAC connection */
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akc_clear(AK4537_MODE2, LOOP);
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akc_clear(AK4537_MODE2, LOOP);
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@ -243,98 +286,41 @@ void audiohw_set_recsrc(int source)
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#if (INPUT_SRC_CAPS & SRC_CAP_FMRADIO)
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#if (INPUT_SRC_CAPS & SRC_CAP_FMRADIO)
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case AUDIO_SRC_FMRADIO:
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case AUDIO_SRC_FMRADIO:
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/* disable mic power supply */
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#if defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925)
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akc_clear(AK4537_MIC, MPWRE);
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#else
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akc_clear(AK4537_MIC, MPWRI);
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#endif
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/* disable mic preamp */
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akc_clear(AK4537_PM1, PMMICL);
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/* Select line2 input: Radio */
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/* disable microphone */
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akc_set(AK4537_PM3, INL | INR);
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akc_disable_mic();
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/* route ALC output to ADC input */
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akc_set(AK4537_MIC, MICAD);
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/* set ALC (automatic level control) to manual mode */
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akc_clear(AK4537_ALC1, ALC1);
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/* set gain control to independent left & right gain */
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/* Select line2 input, set gain control to independent left & right gain */
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akc_set(AK4537_MIC, IPGAC);
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akc_setup_input(0xff, 0xff);
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/* power up left channel input and ADC */
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akc_set(AK4537_PM1, PMADL | PMIPGL);
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/* power up right channel input and ADC */
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akc_set(AK4537_PM3, PMADR | PMIPGR);
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/* set line in vol = 0 dB */
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/* set line in vol = 0 dB */
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akc_write(AK4537_IPGAL, 0x2f);
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akc_write(AK4537_IPGAL, 0x2f);
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akc_write(AK4537_IPGAR, 0x2f);
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akc_write(AK4537_IPGAR, 0x2f);
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/* ADC -> DAC, external data to DAC ignored */
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akc_set(AK4537_MODE2, LOOP);
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break;
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break;
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#endif /* INPUT_SRC_CAPS & SRC_CAP_FMRADIO */
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#endif /* INPUT_SRC_CAPS & SRC_CAP_FMRADIO */
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#if (INPUT_SRC_CAPS & SRC_CAP_LINEIN)
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#if (INPUT_SRC_CAPS & SRC_CAP_LINEIN)
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case AUDIO_SRC_LINEIN:
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case AUDIO_SRC_LINEIN:
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/* disable mic power supply */
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#if defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925)
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akc_clear(AK4537_MIC, MPWRE);
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#else
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akc_clear(AK4537_MIC, MPWRI);
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#endif
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/* disable mic preamp */
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akc_clear(AK4537_PM1, PMMICL);
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/* Select line1 input */
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/* disable microphone */
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akc_clear(AK4537_PM3, INL | INR);
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akc_disable_mic();
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/* route ALC output to ADC input */
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akc_set(AK4537_MIC, MICAD);
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/* set ALC (automatic level control) to manual mode */
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akc_clear(AK4537_ALC1, ALC1);
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/* set gain control to independent left & right gain */
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/* Select line1 input, set gain control to independent left & right gain */
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akc_set(AK4537_MIC, IPGAC);
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akc_setup_input(0x00, 0xff);
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/* power up left channel input and ADC */
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akc_set(AK4537_PM1, PMADL | PMIPGL);
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/* power up right channel input and ADC */
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akc_set(AK4537_PM3, PMADR | PMIPGR);
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/* ADC -> DAC, external data to DAC ignored */
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akc_set(AK4537_MODE2, LOOP);
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break;
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break;
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#endif /* INPUT_SRC_CAPS & SRC_CAP_LINEIN */
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#endif /* INPUT_SRC_CAPS & SRC_CAP_LINEIN */
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#if (INPUT_SRC_CAPS & SRC_CAP_MIC)
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#if (INPUT_SRC_CAPS & SRC_CAP_MIC)
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case AUDIO_SRC_MIC:
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case AUDIO_SRC_MIC:
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/* enable mic power supply */
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#if defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925)
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/* additionally select external mic */
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akc_set(AK4537_MIC, MPWRE | MSEL);
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#else
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akc_set(AK4537_MIC, MPWRI);
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#endif
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/* mic out is connected to line1 input */
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/* enable micropohone */
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akc_clear(AK4537_PM3, INL | INR);
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akc_enable_mic();
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/* route ALC output to ADC input */
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/* Select line1 input (mic connected), set gain control to 'dependent' */
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akc_set(AK4537_MIC, MICAD);
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/* (left & right at the same time) */
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/* set ALC (automatic level control) to manual mode */
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akc_setup_input(0x00, 0x00);
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akc_clear(AK4537_ALC1, ALC1);
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/* set gain control to 'dependent' (left&right at the same time) */
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akc_clear(AK4537_MIC, IPGAC);
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/* power up mic preamp, left channel ADC and line in */
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akc_set(AK4537_PM1, PMMICL | PMIPGL | PMADL);
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/* power up right channel ADC and line in */
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akc_set(AK4537_PM3, PMADR | PMIPGR);
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/* ADC -> DAC, external data to DAC ignored */
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akc_set(AK4537_MODE2, LOOP);
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break;
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break;
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#endif /* INPUT_SRC_CAPS & SRC_CAP_MIC) */
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#endif /* INPUT_SRC_CAPS & SRC_CAP_MIC) */
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