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linux-next/include/sound/soc_sdw_utils.h
Richard Fitzgerald 484c997e03
ASoC: sdw_utils: cs_amp: Assign non-overlapping TDM masks for each codec on a bus 
Use snd_soc_dai_set_tdm_slot() on capture DAIs to prevent multiple
aggregated amps from trying to send data at the same time.

When the capture DAIs of multiple amps on a bus are aggregated they will
all be sharing the same bit slots for transmitted audio. This would lead
to bus errors if all channels on all amps were enabled, because multiple
amps would be trying to send data at the same time.

To prevent this, the available channels are divided between the amps on a
bus so that only one amp will be sending data for each channel position.

A CS35L56 has 4 TX channels, which must be split between all the amps on a
bus so that no two amps are using the same channel. This is done simply by
dividing by the number of amps on the bus, so that 1 amp can use all
4 channels, 2 amps can use 2 channels each, and 3 or 4 amps can only use
1 channel each.

The amps are usually aggregated across multiple SoundWire buses. In this
case there will be multiple cpu DAIs in the dailink. The channel mapping
is used to determine which amps are on each bus. The allocation of the
4 channels is done separately for each bus (only amps on the same bus can
interfere with each other).

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://patch.msgid.link/20241203104534.56719-3-yung-chuan.liao@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2024-12-03 12:36:28 +00:00

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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* This file incorporates work covered by the following copyright notice:
* Copyright (c) 2020 Intel Corporation
* Copyright(c) 2024 Advanced Micro Devices, Inc.
*
*/
#ifndef SOC_SDW_UTILS_H
#define SOC_SDW_UTILS_H
#include <sound/soc.h>
#include <sound/soc-acpi.h>
#define SOC_SDW_MAX_DAI_NUM 8
#define SOC_SDW_MAX_NO_PROPS 2
#define SOC_SDW_JACK_JDSRC(quirk) ((quirk) & GENMASK(3, 0))
/* If a CODEC has an optional speaker output, this quirk will enable it */
#define SOC_SDW_CODEC_SPKR BIT(15)
/*
* If the CODEC has additional devices attached directly to it.
*
* For the cs42l43:
* - 0 - No speaker output
* - SOC_SDW_CODEC_SPKR - CODEC internal speaker
* - SOC_SDW_SIDECAR_AMPS - 2x Sidecar amplifiers + CODEC internal speaker
* - SOC_SDW_CODEC_SPKR | SOF_SIDECAR_AMPS - Not currently supported
*/
#define SOC_SDW_SIDECAR_AMPS BIT(16)
#define SOC_SDW_CODEC_MIC BIT(17)
#define SOC_SDW_UNUSED_DAI_ID -1
#define SOC_SDW_JACK_OUT_DAI_ID 0
#define SOC_SDW_JACK_IN_DAI_ID 1
#define SOC_SDW_AMP_OUT_DAI_ID 2
#define SOC_SDW_AMP_IN_DAI_ID 3
#define SOC_SDW_DMIC_DAI_ID 4
#define SOC_SDW_DAI_TYPE_JACK 0
#define SOC_SDW_DAI_TYPE_AMP 1
#define SOC_SDW_DAI_TYPE_MIC 2
struct asoc_sdw_codec_info;
struct asoc_sdw_dai_info {
const bool direction[2]; /* playback & capture support */
const char *dai_name;
const int dai_type;
const int dailink[2]; /* dailink id for each direction */
const struct snd_kcontrol_new *controls;
const int num_controls;
const struct snd_soc_dapm_widget *widgets;
const int num_widgets;
int (*init)(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_links,
struct asoc_sdw_codec_info *info,
bool playback);
int (*exit)(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link);
int (*rtd_init)(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
bool rtd_init_done; /* Indicate that the rtd_init callback is done */
unsigned long quirk;
bool quirk_exclude;
};
struct asoc_sdw_codec_info {
const int part_id;
const int version_id;
const char *codec_name;
int amp_num;
const u8 acpi_id[ACPI_ID_LEN];
const bool ignore_internal_dmic;
const struct snd_soc_ops *ops;
struct asoc_sdw_dai_info dais[SOC_SDW_MAX_DAI_NUM];
const int dai_num;
int (*codec_card_late_probe)(struct snd_soc_card *card);
int (*count_sidecar)(struct snd_soc_card *card,
int *num_dais, int *num_devs);
int (*add_sidecar)(struct snd_soc_card *card,
struct snd_soc_dai_link **dai_links,
struct snd_soc_codec_conf **codec_conf);
};
struct asoc_sdw_mc_private {
struct snd_soc_card card;
struct snd_soc_jack sdw_headset;
struct device *headset_codec_dev; /* only one headset per card */
struct device *amp_dev1, *amp_dev2;
bool append_dai_type;
bool ignore_internal_dmic;
void *private;
unsigned long mc_quirk;
int codec_info_list_count;
};
struct asoc_sdw_endpoint {
struct list_head list;
u32 link_mask;
const char *codec_name;
const char *name_prefix;
bool include_sidecar;
struct asoc_sdw_codec_info *codec_info;
const struct asoc_sdw_dai_info *dai_info;
};
struct asoc_sdw_dailink {
bool initialised;
u8 group_id;
u32 link_mask[SNDRV_PCM_STREAM_LAST + 1];
int num_devs[SNDRV_PCM_STREAM_LAST + 1];
struct list_head endpoints;
};
extern struct asoc_sdw_codec_info codec_info_list[];
int asoc_sdw_get_codec_info_list_count(void);
int asoc_sdw_startup(struct snd_pcm_substream *substream);
int asoc_sdw_prepare(struct snd_pcm_substream *substream);
int asoc_sdw_prepare(struct snd_pcm_substream *substream);
int asoc_sdw_trigger(struct snd_pcm_substream *substream, int cmd);
int asoc_sdw_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params);
int asoc_sdw_hw_free(struct snd_pcm_substream *substream);
void asoc_sdw_shutdown(struct snd_pcm_substream *substream);
const char *asoc_sdw_get_codec_name(struct device *dev,
const struct asoc_sdw_codec_info *codec_info,
const struct snd_soc_acpi_link_adr *adr_link,
int adr_index);
struct asoc_sdw_codec_info *asoc_sdw_find_codec_info_part(const u64 adr);
struct asoc_sdw_codec_info *asoc_sdw_find_codec_info_acpi(const u8 *acpi_id);
struct asoc_sdw_codec_info *asoc_sdw_find_codec_info_dai(const char *dai_name,
int *dai_index);
struct snd_soc_dai_link *asoc_sdw_mc_find_codec_dai_used(struct snd_soc_card *card,
const char *dai_name);
void asoc_sdw_mc_dailink_exit_loop(struct snd_soc_card *card);
int asoc_sdw_card_late_probe(struct snd_soc_card *card);
void asoc_sdw_init_dai_link(struct device *dev, struct snd_soc_dai_link *dai_links,
int *be_id, char *name, int playback, int capture,
struct snd_soc_dai_link_component *cpus, int cpus_num,
struct snd_soc_dai_link_component *platform_component,
int num_platforms, struct snd_soc_dai_link_component *codecs,
int codecs_num, int no_pcm,
int (*init)(struct snd_soc_pcm_runtime *rtd),
const struct snd_soc_ops *ops);
int asoc_sdw_init_simple_dai_link(struct device *dev, struct snd_soc_dai_link *dai_links,
int *be_id, char *name, int playback, int capture,
const char *cpu_dai_name, const char *platform_comp_name,
int num_platforms, const char *codec_name,
const char *codec_dai_name, int no_pcm,
int (*init)(struct snd_soc_pcm_runtime *rtd),
const struct snd_soc_ops *ops);
int asoc_sdw_count_sdw_endpoints(struct snd_soc_card *card, int *num_devs, int *num_ends);
struct asoc_sdw_dailink *asoc_sdw_find_dailink(struct asoc_sdw_dailink *dailinks,
const struct snd_soc_acpi_endpoint *new);
int asoc_sdw_parse_sdw_endpoints(struct snd_soc_card *card,
struct asoc_sdw_dailink *soc_dais,
struct asoc_sdw_endpoint *soc_ends,
int *num_devs);
int asoc_sdw_rtd_init(struct snd_soc_pcm_runtime *rtd);
/* DMIC support */
int asoc_sdw_dmic_init(struct snd_soc_pcm_runtime *rtd);
/* RT711 support */
int asoc_sdw_rt711_init(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_links,
struct asoc_sdw_codec_info *info,
bool playback);
int asoc_sdw_rt711_exit(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link);
/* RT711-SDCA support */
int asoc_sdw_rt_sdca_jack_init(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_links,
struct asoc_sdw_codec_info *info,
bool playback);
int asoc_sdw_rt_sdca_jack_exit(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link);
/* RT1308 I2S support */
extern const struct snd_soc_ops soc_sdw_rt1308_i2s_ops;
/* generic amp support */
int asoc_sdw_rt_amp_init(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_links,
struct asoc_sdw_codec_info *info,
bool playback);
int asoc_sdw_rt_amp_exit(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link);
/* CS42L43 support */
int asoc_sdw_cs42l43_spk_init(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_links,
struct asoc_sdw_codec_info *info,
bool playback);
/* CS AMP support */
int asoc_sdw_bridge_cs35l56_count_sidecar(struct snd_soc_card *card,
int *num_dais, int *num_devs);
int asoc_sdw_bridge_cs35l56_add_sidecar(struct snd_soc_card *card,
struct snd_soc_dai_link **dai_links,
struct snd_soc_codec_conf **codec_conf);
int asoc_sdw_bridge_cs35l56_spk_init(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_links,
struct asoc_sdw_codec_info *info,
bool playback);
int asoc_sdw_cs_amp_init(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_links,
struct asoc_sdw_codec_info *info,
bool playback);
int asoc_sdw_cs_spk_feedback_rtd_init(struct snd_soc_pcm_runtime *rtd,
struct snd_soc_dai *dai);
/* MAXIM codec support */
int asoc_sdw_maxim_init(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_links,
struct asoc_sdw_codec_info *info,
bool playback);
/* dai_link init callbacks */
int asoc_sdw_rt_dmic_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
int asoc_sdw_rt_sdca_jack_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
int asoc_sdw_rt_amp_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
int asoc_sdw_rt700_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
int asoc_sdw_rt711_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
int asoc_sdw_rt_mf_sdca_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
int asoc_sdw_rt5682_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
int asoc_sdw_cs42l42_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
int asoc_sdw_cs42l43_hs_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
int asoc_sdw_cs42l43_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
int asoc_sdw_cs42l43_dmic_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
int asoc_sdw_cs_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
int asoc_sdw_maxim_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
#endif
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