path: root/sound/soc/qcom/qdsp6/q6asm-dai.c

// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2011-2017, The Linux Foundation. All rights reserved.
// Copyright (c) 2018, Linaro Limited

#include <dt-bindings/sound/qcom,q6asm.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/pcm.h>
#include <linux/spinlock.h>
#include <sound/compress_driver.h>
#include <asm/dma.h>
#include <linux/dma-mapping.h>
#include <sound/pcm_params.h>
#include "q6asm.h"
#include "q6routing.h"
#include "q6dsp-errno.h"

#define DRV_NAME	"q6asm-fe-dai"

#define PLAYBACK_MIN_NUM_PERIODS    2
#define PLAYBACK_MAX_NUM_PERIODS   8
#define PLAYBACK_MAX_PERIOD_SIZE    65536
#define PLAYBACK_MIN_PERIOD_SIZE    128
#define CAPTURE_MIN_NUM_PERIODS     2
#define CAPTURE_MAX_NUM_PERIODS     8
#define CAPTURE_MAX_PERIOD_SIZE     4096
#define CAPTURE_MIN_PERIOD_SIZE     320
#define SID_MASK_DEFAULT	0xF

/* Default values used if user space does not set */
#define COMPR_PLAYBACK_MIN_FRAGMENT_SIZE (8 * 1024)
#define COMPR_PLAYBACK_MAX_FRAGMENT_SIZE (128 * 1024)
#define COMPR_PLAYBACK_MIN_NUM_FRAGMENTS (4)
#define COMPR_PLAYBACK_MAX_NUM_FRAGMENTS (16 * 4)

#define ALAC_CH_LAYOUT_MONO   ((101 << 16) | 1)
#define ALAC_CH_LAYOUT_STEREO ((101 << 16) | 2)

enum stream_state {
	Q6ASM_STREAM_IDLE = 0,
	Q6ASM_STREAM_STOPPED,
	Q6ASM_STREAM_RUNNING,
};

struct q6asm_dai_rtd {
	struct snd_pcm_substream *substream;
	struct snd_compr_stream *cstream;
	struct snd_codec codec;
	struct snd_dma_buffer dma_buffer;
	spinlock_t lock;
	phys_addr_t phys;
	unsigned int pcm_size;
	unsigned int pcm_count;
	unsigned int pcm_irq_pos;       /* IRQ position */
	unsigned int periods;
	unsigned int bytes_sent;
	unsigned int bytes_received;
	unsigned int copied_total;
	uint16_t bits_per_sample;
	uint16_t source; /* Encoding source bit mask */
	struct audio_client *audio_client;
	uint32_t next_track_stream_id;
	bool next_track;
	uint32_t stream_id;
	uint16_t session_id;
	enum stream_state state;
	uint32_t initial_samples_drop;
	uint32_t trailing_samples_drop;
	bool notify_on_drain;
};

struct q6asm_dai_data {
	struct snd_soc_dai_driver *dais;
	int num_dais;
	long long int sid;
};

static const struct snd_pcm_hardware q6asm_dai_hardware_capture = {
	.info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_BATCH |
				SNDRV_PCM_INFO_BLOCK_TRANSFER |
				SNDRV_PCM_INFO_MMAP_VALID |
				SNDRV_PCM_INFO_INTERLEAVED |
				SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME),
	.formats =              (SNDRV_PCM_FMTBIT_S16_LE |
				SNDRV_PCM_FMTBIT_S24_LE),
	.rates =                SNDRV_PCM_RATE_8000_48000,
	.rate_min =             8000,
	.rate_max =             48000,
	.channels_min =         1,
	.channels_max =         4,
	.buffer_bytes_max =     CAPTURE_MAX_NUM_PERIODS *
				CAPTURE_MAX_PERIOD_SIZE,
	.period_bytes_min =	CAPTURE_MIN_PERIOD_SIZE,
	.period_bytes_max =     CAPTURE_MAX_PERIOD_SIZE,
	.periods_min =          CAPTURE_MIN_NUM_PERIODS,
	.periods_max =          CAPTURE_MAX_NUM_PERIODS,
	.fifo_size =            0,
};

static const struct snd_pcm_hardware q6asm_dai_hardware_playback = {
	.info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_BATCH |
				SNDRV_PCM_INFO_BLOCK_TRANSFER |