01ea6ba2bc
When digital microphones are connected to twl, delay is needed after enabling the digimic interface of the codec. Add new parameter for the setup data, which can be used to pass the apropriate delay in ms after the digimic interface has been enabled. Without certain delay (in certain HW configuration) the beggining of the recorded sample contains a glitch, which is generated by the digital microphones. Delaying the micbias1, 2 (which is the bias for the digimic0 or 1) does not help, since the glitch is coming after switching the digimic interface. Reversing the micbias and digimic enable order does not work either (in that case the wait need to be added after the micbias enabled). Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
/*
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* ALSA SoC TWL4030 codec driver
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*
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* Author: Steve Sakoman <steve@sakoman.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#ifndef __TWL4030_AUDIO_H__
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#define __TWL4030_AUDIO_H__
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/* Register descriptions are here */
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#include <linux/mfd/twl4030-codec.h>
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/* Shadow register used by the audio driver */
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#define TWL4030_REG_SW_SHADOW 0x4A
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#define TWL4030_CACHEREGNUM (TWL4030_REG_SW_SHADOW + 1)
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/* TWL4030_REG_SW_SHADOW (0x4A) Fields */
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#define TWL4030_HFL_EN 0x01
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#define TWL4030_HFR_EN 0x02
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#define TWL4030_DAI_HIFI 0
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#define TWL4030_DAI_VOICE 1
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extern struct snd_soc_dai twl4030_dai[2];
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extern struct snd_soc_codec_device soc_codec_dev_twl4030;
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struct twl4030_setup_data {
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unsigned int ramp_delay_value;
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unsigned int digimic_delay; /* in ms */
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unsigned int sysclk;
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unsigned int offset_cncl_path;
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unsigned int check_defaults:1;
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unsigned int reset_registers:1;
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unsigned int hs_extmute:1;
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void (*set_hs_extmute)(int mute);
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};
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#endif /* End of __TWL4030_AUDIO_H__ */
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