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