projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1a11d88f JB |
1 | /* SPDX-License-Identifier: (GPL-2.0 OR MIT) |
| 2 | * | |
| 3 | * Copyright (c) 2018 Baylibre SAS. | |
| 4 | * Author: Jerome Brunet <[email protected]> | |
| 5 | */ | |
| 6 | ||
| 7 | #ifndef _MESON_AXG_TDM_H | |
| 8 | #define _MESON_AXG_TDM_H | |
| 9 | ||
| 10 | #include <linux/clk.h> | |
| 11 | #include <linux/regmap.h> | |
| 12 | #include <sound/pcm.h> | |
| 13 | #include <sound/soc.h> | |
| 14 | #include <sound/soc-dai.h> | |
| 15 | ||
| 16 | #define AXG_TDM_NUM_LANES 4 | |
| 17 | #define AXG_TDM_CHANNEL_MAX 128 | |
| 18 | #define AXG_TDM_RATES (SNDRV_PCM_RATE_5512 | \ | |
| 19 | SNDRV_PCM_RATE_8000_192000) | |
| 20 | #define AXG_TDM_FORMATS (SNDRV_PCM_FMTBIT_S8 | \ | |
| 21 | SNDRV_PCM_FMTBIT_S16_LE | \ | |
| 22 | SNDRV_PCM_FMTBIT_S20_LE | \ | |
| 23 | SNDRV_PCM_FMTBIT_S24_LE | \ | |
| 24 | SNDRV_PCM_FMTBIT_S32_LE) | |
| 25 | ||
| 26 | struct axg_tdm_iface { | |
| 27 | struct clk *sclk; | |
| 28 | struct clk *lrclk; | |
| 29 | struct clk *mclk; | |
| 30 | unsigned long mclk_rate; | |
| 31 | ||
| 32 | /* format is common to all the DAIs of the iface */ | |
| 33 | unsigned int fmt; | |
| 34 | unsigned int slots; | |
| 35 | unsigned int slot_width; | |
| 36 | ||
| 37 | /* For component wide symmetry */ | |
| 38 | int rate; | |
| 39 | }; | |
| 40 | ||
| 41 | static inline bool axg_tdm_lrclk_invert(unsigned int fmt) | |
| 42 | { | |
| cb36ff78 | 43 | return ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_I2S) ^ |
| 1a11d88f JB |
44 | !!(fmt & (SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_NB_IF)); |
| 45 | } | |
| 46 | ||
| 47 | static inline bool axg_tdm_sclk_invert(unsigned int fmt) | |
| 48 | { | |
| 49 | return fmt & (SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_IB_NF); | |
| 50 | } | |
| 51 | ||
| 52 | struct axg_tdm_stream { | |
| 53 | struct axg_tdm_iface *iface; | |
| 54 | struct list_head formatter_list; | |
| 55 | struct mutex lock; | |
| 56 | unsigned int channels; | |
| 57 | unsigned int width; | |
| 58 | unsigned int physical_width; | |
| 59 | u32 *mask; | |
| 60 | bool ready; | |
| 61 | }; | |
| 62 | ||
| 63 | struct axg_tdm_stream *axg_tdm_stream_alloc(struct axg_tdm_iface *iface); | |
| 64 | void axg_tdm_stream_free(struct axg_tdm_stream *ts); | |
| 65 | int axg_tdm_stream_start(struct axg_tdm_stream *ts); | |
| 66 | void axg_tdm_stream_stop(struct axg_tdm_stream *ts); | |
| 67 | ||
| 68 | static inline int axg_tdm_stream_reset(struct axg_tdm_stream *ts) | |
| 69 | { | |
| 70 | axg_tdm_stream_stop(ts); | |
| 71 | return axg_tdm_stream_start(ts); | |
| 72 | } | |
| 73 | ||
| d60e4f1e JB |
74 | int axg_tdm_set_tdm_slots(struct snd_soc_dai *dai, u32 *tx_mask, |
| 75 | u32 *rx_mask, unsigned int slots, | |
| 76 | unsigned int slot_width); | |
| 77 | ||
| 1a11d88f | 78 | #endif /* _MESON_AXG_TDM_H */ |