/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Rockchip DLP (Digital Loopback) driver
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*
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* Copyright (C) 2022 Rockchip Electronics Co., Ltd
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* Author: Sugar Zhang <sugar.zhang@rock-chips.com>
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*
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*/
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#ifndef _ROCKCHIP_DLP_H
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#define _ROCKCHIP_DLP_H
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#include "rockchip_dlp_pcm.h"
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#define DLP_MAX_DRDS 8
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/* MUST: enum dlp_mode should be match to dlp_text */
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enum dlp_mode {
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DLP_MODE_DISABLED,
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DLP_MODE_2CH_1LP_1MIC, /* replace cap-ch-0 with play-ch-0 */
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DLP_MODE_2CH_1MIC_1LP, /* replace cap-ch-1 with play-ch-1 */
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DLP_MODE_2CH_1MIC_1LP_MIX, /* replace cap-ch-1 with play-ch-all-mix */
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DLP_MODE_2CH_2LP, /* replace cap-ch-0~1 with play-ch-0~1 */
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DLP_MODE_4CH_2MIC_2LP, /* replace cap-ch-2~3 with play-ch-0~1 */
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DLP_MODE_4CH_2MIC_1LP_MIX, /* replace cap-ch-3 with play-ch-all-mix */
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DLP_MODE_4CH_4LP, /* replace cap-ch-0~3 with play-ch-0~3 */
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DLP_MODE_6CH_4MIC_2LP, /* replace cap-ch-4~5 with play-ch-0~1 */
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DLP_MODE_6CH_4MIC_1LP_MIX, /* replace cap-ch-4 with play-ch-all-mix */
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DLP_MODE_6CH_6LP, /* replace cap-ch-0~5 with play-ch-0~5 */
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DLP_MODE_8CH_6MIC_2LP, /* replace cap-ch-6~7 with play-ch-0~1 */
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DLP_MODE_8CH_6MIC_1LP_MIX, /* replace cap-ch-6 with play-ch-all-mix */
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DLP_MODE_8CH_8LP, /* replace cap-ch-0~7 with play-ch-0~7 */
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DLP_MODE_10CH_8MIC_2LP, /* replace cap-ch-8~9 with play-ch-0~1 */
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DLP_MODE_10CH_8MIC_1LP_MIX, /* replace cap-ch-8 with play-ch-all-mix */
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DLP_MODE_16CH_8MIC_8LP, /* replace cap-ch-8~f with play-ch-8~f */
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};
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struct dlp;
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struct dlp_runtime_data {
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struct dlp *parent;
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struct kref refcount;
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struct list_head node;
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char *buf;
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snd_pcm_uframes_t buf_sz;
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snd_pcm_uframes_t last_buf_sz;
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snd_pcm_uframes_t period_sz;
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int64_t hw_ptr;
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int64_t hw_ptr_delta; /* play-ptr - cap-ptr */
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atomic64_t period_elapsed;
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atomic_t stop;
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unsigned int frame_bytes;
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unsigned int channels;
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unsigned int buf_ofs;
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int stream;
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};
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struct dlp {
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struct device *dev;
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struct list_head drd_avl_list;
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struct list_head drd_rdy_list;
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struct list_head drd_ref_list;
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struct dlp_runtime_data drds[DLP_MAX_DRDS];
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struct dlp_runtime_data *drd_pb_shadow;
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struct snd_soc_component component;
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const struct snd_dlp_config *config;
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enum dlp_mode mode;
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int drd_avl_count;
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atomic_t active;
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spinlock_t lock;
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};
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typedef snd_pcm_uframes_t (*dma_pointer_f)(struct snd_soc_component *component,
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struct snd_pcm_substream *substream);
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static inline struct dlp *soc_component_to_dlp(struct snd_soc_component *p)
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{
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return container_of(p, struct dlp, component);
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}
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static inline struct dlp_runtime_data *substream_to_drd(
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const struct snd_pcm_substream *substream)
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{
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if (!substream->runtime)
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return NULL;
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return substream->runtime->private_data;
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}
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static inline ssize_t dlp_channels_to_bytes(struct dlp_runtime_data *drd,
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int channels)
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{
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return (drd->frame_bytes / drd->channels) * channels;
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}
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static inline ssize_t dlp_frames_to_bytes(struct dlp_runtime_data *drd,
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snd_pcm_sframes_t size)
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{
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return size * drd->frame_bytes;
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}
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static inline snd_pcm_sframes_t dlp_bytes_to_frames(struct dlp_runtime_data *drd,
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ssize_t size)
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{
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return size / drd->frame_bytes;
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}
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void dlp_dma_complete(struct dlp *dlp, struct dlp_runtime_data *drd);
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int dlp_open(struct dlp *dlp, struct dlp_runtime_data *drd,
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struct snd_pcm_substream *substream);
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int dlp_close(struct dlp *dlp, struct dlp_runtime_data *drd,
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struct snd_pcm_substream *substream);
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int dlp_hw_params(struct snd_soc_component *component,
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struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params);
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int dlp_start(struct snd_soc_component *component,
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struct snd_pcm_substream *substream,
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struct device *dev,
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dma_pointer_f dma_pointer);
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void dlp_stop(struct snd_soc_component *component,
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struct snd_pcm_substream *substream,
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dma_pointer_f dma_pointer);
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int dlp_copy_user(struct snd_soc_component *component,
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struct snd_pcm_substream *substream,
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int channel, unsigned long hwoff,
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void __user *buf, unsigned long bytes);
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int dlp_prepare(struct snd_soc_component *component,
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struct snd_pcm_substream *substream);
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int dlp_probe(struct snd_soc_component *component);
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int dlp_register(struct dlp *dlp, struct device *dev,
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const struct snd_soc_component_driver *driver,
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const struct snd_dlp_config *config);
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#endif
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