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78 lines
1.9 KiB
78 lines
1.9 KiB
/* SPDX-License-Identifier: (GPL-2.0 OR MIT) |
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* |
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* Copyright (c) 2018 Baylibre SAS. |
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* Author: Jerome Brunet <[email protected]> |
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*/ |
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#ifndef _MESON_AXG_TDM_H |
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#define _MESON_AXG_TDM_H |
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#include <linux/clk.h> |
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#include <linux/regmap.h> |
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#include <sound/pcm.h> |
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#include <sound/soc.h> |
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#include <sound/soc-dai.h> |
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#define AXG_TDM_NUM_LANES 4 |
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#define AXG_TDM_CHANNEL_MAX 128 |
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#define AXG_TDM_RATES (SNDRV_PCM_RATE_5512 | \ |
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SNDRV_PCM_RATE_8000_192000) |
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#define AXG_TDM_FORMATS (SNDRV_PCM_FMTBIT_S8 | \ |
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SNDRV_PCM_FMTBIT_S16_LE | \ |
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SNDRV_PCM_FMTBIT_S20_LE | \ |
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SNDRV_PCM_FMTBIT_S24_LE | \ |
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SNDRV_PCM_FMTBIT_S32_LE) |
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struct axg_tdm_iface { |
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struct clk *sclk; |
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struct clk *lrclk; |
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struct clk *mclk; |
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unsigned long mclk_rate; |
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/* format is common to all the DAIs of the iface */ |
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unsigned int fmt; |
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unsigned int slots; |
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unsigned int slot_width; |
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/* For component wide symmetry */ |
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int rate; |
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}; |
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static inline bool axg_tdm_lrclk_invert(unsigned int fmt) |
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{ |
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return ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_I2S) ^ |
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!!(fmt & (SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_NB_IF)); |
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} |
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static inline bool axg_tdm_sclk_invert(unsigned int fmt) |
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{ |
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return fmt & (SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_IB_NF); |
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} |
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struct axg_tdm_stream { |
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struct axg_tdm_iface *iface; |
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struct list_head formatter_list; |
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struct mutex lock; |
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unsigned int channels; |
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unsigned int width; |
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unsigned int physical_width; |
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u32 *mask; |
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bool ready; |
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}; |
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struct axg_tdm_stream *axg_tdm_stream_alloc(struct axg_tdm_iface *iface); |
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void axg_tdm_stream_free(struct axg_tdm_stream *ts); |
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int axg_tdm_stream_start(struct axg_tdm_stream *ts); |
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void axg_tdm_stream_stop(struct axg_tdm_stream *ts); |
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static inline int axg_tdm_stream_reset(struct axg_tdm_stream *ts) |
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{ |
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axg_tdm_stream_stop(ts); |
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return axg_tdm_stream_start(ts); |
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} |
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int axg_tdm_set_tdm_slots(struct snd_soc_dai *dai, u32 *tx_mask, |
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u32 *rx_mask, unsigned int slots, |
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unsigned int slot_width); |
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#endif /* _MESON_AXG_TDM_H */
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