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For TDM mode, BCLK-to-LCLK ratio is computed as (tdm_slots) x (word_length). I2S mode is only subset of TDM mode with specific tdm_slots = 2 channels. Also bclk_lrclk_ratio can be greater than 255, therefore u16 need to be used. Signed-off-by: Michal Bachraty <michal.bachraty@streamunlimited.com> Acked-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
/*
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* ALSA SoC McASP Audio Layer for TI DAVINCI processor
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*
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* MCASP related definitions
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*
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* Author: Nirmal Pandey <n-pandey@ti.com>,
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* Suresh Rajashekara <suresh.r@ti.com>
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* Steve Chen <schen@.mvista.com>
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*
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* Copyright: (C) 2009 MontaVista Software, Inc., <source@mvista.com>
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* Copyright: (C) 2009 Texas Instruments, India
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef DAVINCI_MCASP_H
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#define DAVINCI_MCASP_H
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#include <linux/io.h>
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#include <linux/platform_data/davinci_asp.h>
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#include "davinci-pcm.h"
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#define DAVINCI_MCASP_RATES SNDRV_PCM_RATE_8000_192000
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#define DAVINCI_MCASP_I2S_DAI 0
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#define DAVINCI_MCASP_DIT_DAI 1
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struct davinci_audio_dev {
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struct davinci_pcm_dma_params dma_params[2];
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void __iomem *base;
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struct device *dev;
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/* McASP specific data */
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int tdm_slots;
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u8 op_mode;
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u8 num_serializer;
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u8 *serial_dir;
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u8 version;
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u16 bclk_lrclk_ratio;
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/* McASP FIFO related */
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u8 txnumevt;
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u8 rxnumevt;
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};
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#endif /* DAVINCI_MCASP_H */
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