@@ -8,6 +8,8 @@ config SND_SOC_FSL_ASRC
depends on HAS_DMA
select REGMAP_MMIO
select SND_SOC_GENERIC_DMAENGINE_PCM
+ select SND_COMPRESS_ACCEL
+ select SND_COMPRESS_OFFLOAD
help
Say Y if you want to add Asynchronous Sample Rate Converter (ASRC)
support for the Freescale CPUs.
@@ -10,7 +10,7 @@ obj-$(CONFIG_SND_SOC_P1022_RDK) += snd-soc-p1022-rdk.o
# Freescale SSI/DMA/SAI/SPDIF Support
snd-soc-fsl-audmix-y := fsl_audmix.o
snd-soc-fsl-asoc-card-y := fsl-asoc-card.o
-snd-soc-fsl-asrc-y := fsl_asrc.o fsl_asrc_dma.o
+snd-soc-fsl-asrc-y := fsl_asrc.o fsl_asrc_dma.o fsl_asrc_m2m.o
snd-soc-fsl-lpc3xxx-y := lpc3xxx-pcm.o lpc3xxx-i2s.o
snd-soc-fsl-sai-y := fsl_sai.o
snd-soc-fsl-ssi-y := fsl_ssi.o
@@ -60,6 +60,7 @@ struct fsl_asrc_m2m_cap {
* @buf_len: buffer length of m2m
* @dma_buffer: buffer pointers
* @first_convert: start of conversion
+ * @ratio_mod_flag: flag for new ratio modifier
* @ratio_mod: ratio modification
*/
struct fsl_asrc_pair {
@@ -84,6 +85,7 @@ struct fsl_asrc_pair {
unsigned int buf_len[2];
struct snd_dma_buffer dma_buffer[2];
unsigned int first_convert;
+ bool ratio_mod_flag;
unsigned int ratio_mod;
};
@@ -98,6 +100,7 @@ struct fsl_asrc_pair {
* @mem_clk: clock source to access register
* @ipg_clk: clock source to drive peripheral
* @spba_clk: SPBA clock (optional, depending on SoC design)
+ * @card: compress sound card
* @lock: spin lock for resource protection
* @pair: pair pointers
* @channel_avail: non-occupied channel numbers
@@ -131,6 +134,7 @@ struct fsl_asrc {
struct clk *mem_clk;
struct clk *ipg_clk;
struct clk *spba_clk;
+ struct snd_card *card;
spinlock_t lock; /* spin lock for resource protection */
struct fsl_asrc_pair *pair[PAIR_CTX_NUM];
@@ -166,4 +170,9 @@ struct fsl_asrc {
#define DRV_NAME "fsl-asrc-dai"
extern struct snd_soc_component_driver fsl_asrc_component;
+int fsl_asrc_m2m_init(struct fsl_asrc *asrc);
+void fsl_asrc_m2m_exit(struct fsl_asrc *asrc);
+int fsl_asrc_m2m_resume(struct fsl_asrc *asrc);
+int fsl_asrc_m2m_suspend(struct fsl_asrc *asrc);
+
#endif /* _FSL_ASRC_COMMON_H */
new file mode 100644
@@ -0,0 +1,727 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
+// Copyright (C) 2019-2024 NXP
+//
+// Freescale ASRC Memory to Memory (M2M) driver
+
+#include <linux/dma/imx-dma.h>
+#include <linux/dma-buf.h>
+#include <linux/dma-mapping.h>
+#include <linux/pm_runtime.h>
+#include <sound/asound.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/initval.h>
+
+#include "fsl_asrc_common.h"
+
+#define DIR_STR(dir) (dir) == IN ? "in" : "out"
+
+#define ASRC_xPUT_DMA_CALLBACK(dir) \
+ (((dir) == IN) ? asrc_input_dma_callback \
+ : asrc_output_dma_callback)
+
+/* Maximum output and capture buffer size */
+#define ASRC_M2M_BUFFER_SIZE (512 * 1024)
+
+/* Maximum output and capture period size */
+#define ASRC_M2M_PERIOD_SIZE (48 * 1024)
+
+/* dma complete callback */
+static void asrc_input_dma_callback(void *data)
+{
+ struct fsl_asrc_pair *pair = (struct fsl_asrc_pair *)data;
+
+ complete(&pair->complete[IN]);
+}
+
+/* dma complete callback */
+static void asrc_output_dma_callback(void *data)
+{
+ struct fsl_asrc_pair *pair = (struct fsl_asrc_pair *)data;
+
+ complete(&pair->complete[OUT]);
+}
+
+/**
+ *asrc_read_last_fifo: read all the remaining data from FIFO
+ *@pair: Structure pointer of fsl_asrc_pair
+ *@dma_vaddr: virtual address of capture buffer
+ *@length: payload length of capture buffer
+ */
+static void asrc_read_last_fifo(struct fsl_asrc_pair *pair, void *dma_vaddr, u32 *length)
+{
+ struct fsl_asrc *asrc = pair->asrc;
+ enum asrc_pair_index index = pair->index;
+ u32 i, reg, size, t_size = 0, width;
+ u32 *reg32 = NULL;
+ u16 *reg16 = NULL;
+ u8 *reg24 = NULL;
+
+ width = snd_pcm_format_physical_width(pair->sample_format[OUT]);
+ if (width == 32)
+ reg32 = dma_vaddr + *length;
+ else if (width == 16)
+ reg16 = dma_vaddr + *length;
+ else
+ reg24 = dma_vaddr + *length;
+retry:
+ size = asrc->get_output_fifo_size(pair);
+ if (size + *length > ASRC_M2M_BUFFER_SIZE)
+ goto end;
+
+ for (i = 0; i < size * pair->channels; i++) {
+ regmap_read(asrc->regmap, asrc->get_fifo_addr(OUT, index), ®);
+ if (reg32) {
+ *reg32++ = reg;
+ } else if (reg16) {
+ *reg16++ = (u16)reg;
+ } else {
+ *reg24++ = (u8)reg;
+ *reg24++ = (u8)(reg >> 8);
+ *reg24++ = (u8)(reg >> 16);
+ }
+ }
+ t_size += size;
+
+ /* In case there is data left in FIFO */
+ if (size)
+ goto retry;
+end:
+ /* Update payload length */
+ if (reg32)
+ *length += t_size * pair->channels * 4;
+ else if (reg16)
+ *length += t_size * pair->channels * 2;
+ else
+ *length += t_size * pair->channels * 3;
+}
+
+/* config dma channel */
+static int asrc_dmaconfig(struct fsl_asrc_pair *pair,
+ struct dma_chan *chan,
+ u32 dma_addr, dma_addr_t buf_addr, u32 buf_len,
+ int dir, int width)
+{
+ struct fsl_asrc *asrc = pair->asrc;
+ struct device *dev = &asrc->pdev->dev;
+ struct dma_slave_config slave_config;
+ enum dma_slave_buswidth buswidth;
+ unsigned int sg_len, max_period_size;
+ struct scatterlist *sg;
+ int ret, i;
+
+ switch (width) {
+ case 8:
+ buswidth = DMA_SLAVE_BUSWIDTH_1_BYTE;
+ break;
+ case 16:
+ buswidth = DMA_SLAVE_BUSWIDTH_2_BYTES;
+ break;
+ case 24:
+ buswidth = DMA_SLAVE_BUSWIDTH_3_BYTES;
+ break;
+ case 32:
+ buswidth = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ break;
+ default:
+ dev_err(dev, "invalid word width\n");
+ return -EINVAL;
+ }
+
+ memset(&slave_config, 0, sizeof(slave_config));
+ if (dir == IN) {
+ slave_config.direction = DMA_MEM_TO_DEV;
+ slave_config.dst_addr = dma_addr;
+ slave_config.dst_addr_width = buswidth;
+ slave_config.dst_maxburst = asrc->m2m_get_maxburst(IN, pair);
+ } else {
+ slave_config.direction = DMA_DEV_TO_MEM;
+ slave_config.src_addr = dma_addr;
+ slave_config.src_addr_width = buswidth;
+ slave_config.src_maxburst = asrc->m2m_get_maxburst(OUT, pair);
+ }
+
+ ret = dmaengine_slave_config(chan, &slave_config);
+ if (ret) {
+ dev_err(dev, "failed to config dmaengine for %s task: %d\n",
+ DIR_STR(dir), ret);
+ return -EINVAL;
+ }
+
+ max_period_size = rounddown(ASRC_M2M_PERIOD_SIZE, width * pair->channels / 8);
+ /* scatter gather mode */
+ sg_len = buf_len / max_period_size;
+ if (buf_len % max_period_size)
+ sg_len += 1;
+
+ sg = kmalloc_array(sg_len, sizeof(*sg), GFP_KERNEL);
+ if (!sg)
+ return -ENOMEM;
+
+ sg_init_table(sg, sg_len);
+ for (i = 0; i < (sg_len - 1); i++) {
+ sg_dma_address(&sg[i]) = buf_addr + i * max_period_size;
+ sg_dma_len(&sg[i]) = max_period_size;
+ }
+ sg_dma_address(&sg[i]) = buf_addr + i * max_period_size;
+ sg_dma_len(&sg[i]) = buf_len - i * max_period_size;
+
+ pair->desc[dir] = dmaengine_prep_slave_sg(chan, sg, sg_len,
+ slave_config.direction,
+ DMA_PREP_INTERRUPT);
+ kfree(sg);
+ if (!pair->desc[dir]) {
+ dev_err(dev, "failed to prepare dmaengine for %s task\n", DIR_STR(dir));
+ return -EINVAL;
+ }
+
+ pair->desc[dir]->callback = ASRC_xPUT_DMA_CALLBACK(dir);
+ pair->desc[dir]->callback_param = pair;
+
+ return 0;
+}
+
+/* main function of converter */
+static void asrc_m2m_device_run(struct fsl_asrc_pair *pair, struct snd_compr_task_runtime *task)
+{
+ struct fsl_asrc *asrc = pair->asrc;
+ struct device *dev = &asrc->pdev->dev;
+ enum asrc_pair_index index = pair->index;
+ struct snd_dma_buffer *src_buf, *dst_buf;
+ unsigned int in_buf_len;
+ unsigned int out_dma_len;
+ unsigned int width;
+ u32 fifo_addr;
+ int ret;
+
+ /* set ratio mod */
+ if (asrc->m2m_set_ratio_mod) {
+ if (pair->ratio_mod_flag) {
+ asrc->m2m_set_ratio_mod(pair, pair->ratio_mod);
+ pair->ratio_mod_flag = false;
+ }
+ }
+
+ src_buf = &pair->dma_buffer[IN];
+ dst_buf = &pair->dma_buffer[OUT];
+
+ width = snd_pcm_format_physical_width(pair->sample_format[IN]);
+ fifo_addr = asrc->paddr + asrc->get_fifo_addr(IN, index);
+
+ in_buf_len = task->input_size;
+
+ if (in_buf_len < width * pair->channels / 8 ||
+ in_buf_len > ASRC_M2M_BUFFER_SIZE ||
+ in_buf_len % (width * pair->channels / 8)) {
+ dev_err(dev, "out buffer size is error: [%d]\n", in_buf_len);
+ goto end;
+ }
+
+ /* dma config for output dma channel */
+ ret = asrc_dmaconfig(pair,
+ pair->dma_chan[IN],
+ fifo_addr,
+ src_buf->addr,
+ in_buf_len, IN, width);
+ if (ret) {
+ dev_err(dev, "out dma config error\n");
+ goto end;
+ }
+
+ width = snd_pcm_format_physical_width(pair->sample_format[OUT]);
+ fifo_addr = asrc->paddr + asrc->get_fifo_addr(OUT, index);
+ out_dma_len = asrc->m2m_calc_out_len(pair, in_buf_len);
+ if (out_dma_len > 0 && out_dma_len <= ASRC_M2M_BUFFER_SIZE) {
+ /* dma config for capture dma channel */
+ ret = asrc_dmaconfig(pair,
+ pair->dma_chan[OUT],
+ fifo_addr,
+ dst_buf->addr,
+ out_dma_len, OUT, width);
+ if (ret) {
+ dev_err(dev, "cap dma config error\n");
+ goto end;
+ }
+ } else if (out_dma_len > ASRC_M2M_BUFFER_SIZE) {
+ dev_err(dev, "cap buffer size error\n");
+ goto end;
+ }
+
+ reinit_completion(&pair->complete[IN]);
+ reinit_completion(&pair->complete[OUT]);
+
+ /* Submit DMA request */
+ dmaengine_submit(pair->desc[IN]);
+ dma_async_issue_pending(pair->desc[IN]->chan);
+ if (out_dma_len > 0) {
+ dmaengine_submit(pair->desc[OUT]);
+ dma_async_issue_pending(pair->desc[OUT]->chan);
+ }
+
+ asrc->m2m_start(pair);
+
+ if (!wait_for_completion_interruptible_timeout(&pair->complete[IN], 10 * HZ)) {
+ dev_err(dev, "out DMA task timeout\n");
+ goto end;
+ }
+
+ if (out_dma_len > 0) {
+ if (!wait_for_completion_interruptible_timeout(&pair->complete[OUT], 10 * HZ)) {
+ dev_err(dev, "cap DMA task timeout\n");
+ goto end;
+ }
+ }
+
+ /* read the last words from FIFO */
+ asrc_read_last_fifo(pair, dst_buf->area, &out_dma_len);
+ /* update payload length for capture */
+ task->output_size = out_dma_len;
+end:
+ return;
+}
+
+static int fsl_asrc_m2m_comp_open(struct snd_compr_stream *stream)
+{
+ struct fsl_asrc *asrc = stream->private_data;
+ struct snd_compr_runtime *runtime = stream->runtime;
+ struct device *dev = &asrc->pdev->dev;
+ struct fsl_asrc_pair *pair;
+ int size, ret;
+
+ pair = kzalloc(sizeof(*pair) + asrc->pair_priv_size, GFP_KERNEL);
+ if (!pair)
+ return -ENOMEM;
+
+ pair->private = (void *)pair + sizeof(struct fsl_asrc_pair);
+ pair->asrc = asrc;
+
+ init_completion(&pair->complete[IN]);
+ init_completion(&pair->complete[OUT]);
+
+ runtime->private_data = pair;
+
+ size = ASRC_M2M_BUFFER_SIZE;
+ ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size, &pair->dma_buffer[IN]);
+ if (ret)
+ goto error_alloc_in_buf;
+
+ ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size, &pair->dma_buffer[OUT]);
+ if (ret)
+ goto error_alloc_out_buf;
+
+ ret = pm_runtime_get_sync(dev);
+ if (ret < 0) {
+ dev_err(dev, "Failed to power up asrc\n");
+ goto err_pm_runtime;
+ }
+
+ return 0;
+
+err_pm_runtime:
+ snd_dma_free_pages(&pair->dma_buffer[OUT]);
+error_alloc_out_buf:
+ snd_dma_free_pages(&pair->dma_buffer[IN]);
+error_alloc_in_buf:
+ kfree(pair);
+ return ret;
+}
+
+static int fsl_asrc_m2m_comp_release(struct snd_compr_stream *stream)
+{
+ struct fsl_asrc *asrc = stream->private_data;
+ struct snd_compr_runtime *runtime = stream->runtime;
+ struct fsl_asrc_pair *pair = runtime->private_data;
+ struct device *dev = &asrc->pdev->dev;
+
+ pm_runtime_put_sync(dev);
+
+ snd_dma_free_pages(&pair->dma_buffer[IN]);
+ snd_dma_free_pages(&pair->dma_buffer[OUT]);
+
+ kfree(runtime->private_data);
+
+ return 0;
+}
+
+static int fsl_asrc_m2m_comp_set_params(struct snd_compr_stream *stream,
+ struct snd_compr_params *params)
+{
+ struct fsl_asrc *asrc = stream->private_data;
+ struct snd_compr_runtime *runtime = stream->runtime;
+ struct fsl_asrc_pair *pair = runtime->private_data;
+ struct fsl_asrc_m2m_cap cap;
+ int ret, i;
+
+ ret = asrc->m2m_get_cap(&cap);
+ if (ret)
+ return -EINVAL;
+
+ if (pcm_format_to_bits(params->codec.format) & cap.fmt_in)
+ pair->sample_format[IN] = params->codec.format;
+ else
+ return -EINVAL;
+
+ if (pcm_format_to_bits(params->codec.pcm_format) & cap.fmt_out)
+ pair->sample_format[OUT] = params->codec.pcm_format;
+ else
+ return -EINVAL;
+
+ /* check input rate is in scope */
+ for (i = 0; i < cap.rate_in_count; i++)
+ if (params->codec.sample_rate == cap.rate_in[i]) {
+ pair->rate[IN] = params->codec.sample_rate;
+ break;
+ }
+ if (i == cap.rate_in_count)
+ return -EINVAL;
+
+ /* check output rate is in scope */
+ for (i = 0; i < cap.rate_out_count; i++)
+ if (params->codec.options.src_d.out_sample_rate == cap.rate_out[i]) {
+ pair->rate[OUT] = params->codec.options.src_d.out_sample_rate;
+ break;
+ }
+ if (i == cap.rate_out_count)
+ return -EINVAL;
+
+ if (params->codec.ch_in != params->codec.ch_out ||
+ params->codec.ch_in < cap.chan_min ||
+ params->codec.ch_in > cap.chan_max)
+ return -EINVAL;
+
+ pair->channels = params->codec.ch_in;
+ pair->buf_len[IN] = params->buffer.fragment_size;
+ pair->buf_len[OUT] = params->buffer.fragment_size;
+
+ return 0;
+}
+
+static int fsl_asrc_m2m_mmap(struct dma_buf *dmabuf, struct vm_area_struct *vma)
+{
+ struct snd_dma_buffer *dmab = dmabuf->priv;
+
+ return snd_dma_buffer_mmap(dmab, vma);
+}
+
+static struct sg_table *fsl_asrc_m2m_map_dma_buf(struct dma_buf_attachment *attachment,
+ enum dma_data_direction direction)
+{
+ struct snd_dma_buffer *dmab = attachment->dmabuf->priv;
+ struct sg_table *sgt;
+
+ sgt = kmalloc(sizeof(*sgt), GFP_KERNEL);
+ if (!sgt)
+ return NULL;
+
+ if (dma_get_sgtable(attachment->dev, sgt, dmab->area, dmab->addr, dmab->bytes) < 0)
+ goto free;
+
+ if (dma_map_sgtable(attachment->dev, sgt, direction, 0))
+ goto free;
+
+ return sgt;
+
+free:
+ sg_free_table(sgt);
+ kfree(sgt);
+ return NULL;
+}
+
+static void fsl_asrc_m2m_unmap_dma_buf(struct dma_buf_attachment *attachment,
+ struct sg_table *table,
+ enum dma_data_direction direction)
+{
+ dma_unmap_sgtable(attachment->dev, table, direction, 0);
+}
+
+static void fsl_asrc_m2m_release(struct dma_buf *dmabuf)
+{
+ /* buffer is released by fsl_asrc_m2m_comp_release() */
+}
+
+static const struct dma_buf_ops fsl_asrc_m2m_dma_buf_ops = {
+ .mmap = fsl_asrc_m2m_mmap,
+ .map_dma_buf = fsl_asrc_m2m_map_dma_buf,
+ .unmap_dma_buf = fsl_asrc_m2m_unmap_dma_buf,
+ .release = fsl_asrc_m2m_release,
+};
+
+static int fsl_asrc_m2m_comp_task_create(struct snd_compr_stream *stream,
+ struct snd_compr_task_runtime *task)
+{
+ DEFINE_DMA_BUF_EXPORT_INFO(exp_info_in);
+ DEFINE_DMA_BUF_EXPORT_INFO(exp_info_out);
+ struct fsl_asrc *asrc = stream->private_data;
+ struct snd_compr_runtime *runtime = stream->runtime;
+ struct fsl_asrc_pair *pair = runtime->private_data;
+ struct device *dev = &asrc->pdev->dev;
+ int ret;
+
+ exp_info_in.ops = &fsl_asrc_m2m_dma_buf_ops;
+ exp_info_in.size = ASRC_M2M_BUFFER_SIZE;
+ exp_info_in.flags = O_RDWR;
+ exp_info_in.priv = &pair->dma_buffer[IN];
+ task->input = dma_buf_export(&exp_info_in);
+ if (IS_ERR(task->input)) {
+ ret = PTR_ERR(task->input);
+ return ret;
+ }
+
+ exp_info_out.ops = &fsl_asrc_m2m_dma_buf_ops;
+ exp_info_out.size = ASRC_M2M_BUFFER_SIZE;
+ exp_info_out.flags = O_RDWR;
+ exp_info_out.priv = &pair->dma_buffer[OUT];
+ task->output = dma_buf_export(&exp_info_out);
+ if (IS_ERR(task->output)) {
+ ret = PTR_ERR(task->output);
+ return ret;
+ }
+
+ /* Request asrc pair/context */
+ ret = asrc->request_pair(pair->channels, pair);
+ if (ret) {
+ dev_err(dev, "failed to request pair: %d\n", ret);
+ goto err_request_pair;
+ }
+
+ ret = asrc->m2m_prepare(pair);
+ if (ret) {
+ dev_err(dev, "failed to start pair part one: %d\n", ret);
+ goto err_start_part_one;
+ }
+
+ /* Request dma channels */
+ pair->dma_chan[IN] = asrc->get_dma_channel(pair, IN);
+ if (!pair->dma_chan[IN]) {
+ dev_err(dev, "[ctx%d] failed to get input DMA channel\n", pair->index);
+ ret = -EBUSY;
+ goto err_dma_channel_in;
+ }
+
+ pair->dma_chan[OUT] = asrc->get_dma_channel(pair, OUT);
+ if (!pair->dma_chan[OUT]) {
+ dev_err(dev, "[ctx%d] failed to get output DMA channel\n", pair->index);
+ ret = -EBUSY;
+ goto err_dma_channel_out;
+ }
+
+ return 0;
+
+err_dma_channel_out:
+ dma_release_channel(pair->dma_chan[IN]);
+err_dma_channel_in:
+ if (asrc->m2m_unprepare)
+ asrc->m2m_unprepare(pair);
+err_start_part_one:
+ asrc->release_pair(pair);
+err_request_pair:
+ return ret;
+}
+
+static int fsl_asrc_m2m_comp_task_start(struct snd_compr_stream *stream,
+ struct snd_compr_task_runtime *task)
+{
+ struct snd_compr_runtime *runtime = stream->runtime;
+ struct fsl_asrc_pair *pair = runtime->private_data;
+
+ asrc_m2m_device_run(pair, task);
+
+ return 0;
+}
+
+static int fsl_asrc_m2m_comp_task_stop(struct snd_compr_stream *stream,
+ struct snd_compr_task_runtime *task)
+{
+ return 0;
+}
+
+static int fsl_asrc_m2m_comp_task_free(struct snd_compr_stream *stream,
+ struct snd_compr_task_runtime *task)
+{
+ struct fsl_asrc *asrc = stream->private_data;
+ struct snd_compr_runtime *runtime = stream->runtime;
+ struct fsl_asrc_pair *pair = runtime->private_data;
+
+ /* Stop & release pair/context */
+ if (asrc->m2m_stop)
+ asrc->m2m_stop(pair);
+
+ if (asrc->m2m_unprepare)
+ asrc->m2m_unprepare(pair);
+ asrc->release_pair(pair);
+
+ /* Release dma channel */
+ if (pair->dma_chan[IN])
+ dma_release_channel(pair->dma_chan[IN]);
+ if (pair->dma_chan[OUT])
+ dma_release_channel(pair->dma_chan[OUT]);
+
+ return 0;
+}
+
+static int fsl_asrc_m2m_get_caps(struct snd_compr_stream *cstream,
+ struct snd_compr_caps *caps)
+{
+ caps->num_codecs = 1;
+ caps->min_fragment_size = 4096;
+ caps->max_fragment_size = 4096;
+ caps->min_fragments = 1;
+ caps->max_fragments = 1;
+ caps->codecs[0] = SND_AUDIOCODEC_PCM;
+
+ return 0;
+}
+
+static int fsl_asrc_m2m_fill_codec_caps(struct fsl_asrc *asrc,
+ struct snd_compr_codec_caps *codec)
+{
+ struct fsl_asrc_m2m_cap cap;
+ snd_pcm_format_t k;
+ int j = 0;
+ int ret;
+
+ ret = asrc->m2m_get_cap(&cap);
+ if (ret)
+ return -EINVAL;
+
+ pcm_for_each_format(k) {
+ if (pcm_format_to_bits(k) & cap.fmt_in) {
+ codec->descriptor[j].max_ch = cap.chan_max;
+ memcpy(codec->descriptor[j].sample_rates,
+ cap.rate_in,
+ cap.rate_in_count * sizeof(__u32));
+ codec->descriptor[j].num_sample_rates = cap.rate_in_count;
+ codec->descriptor[j].formats = k;
+ codec->descriptor[j].pcm_formats = cap.fmt_out;
+ codec->descriptor[j].src.out_sample_rate_min = cap.rate_out[0];
+ codec->descriptor[j].src.out_sample_rate_max =
+ cap.rate_out[cap.rate_out_count - 1];
+ j++;
+ }
+ }
+
+ codec->codec = SND_AUDIOCODEC_PCM;
+ codec->num_descriptors = j;
+ return 0;
+}
+
+static int fsl_asrc_m2m_get_codec_caps(struct snd_compr_stream *stream,
+ struct snd_compr_codec_caps *codec)
+{
+ struct fsl_asrc *asrc = stream->private_data;
+
+ return fsl_asrc_m2m_fill_codec_caps(asrc, codec);
+}
+
+static struct snd_compr_ops fsl_asrc_m2m_compr_ops = {
+ .open = fsl_asrc_m2m_comp_open,
+ .free = fsl_asrc_m2m_comp_release,
+ .set_params = fsl_asrc_m2m_comp_set_params,
+ .get_caps = fsl_asrc_m2m_get_caps,
+ .get_codec_caps = fsl_asrc_m2m_get_codec_caps,
+ .task_create = fsl_asrc_m2m_comp_task_create,
+ .task_start = fsl_asrc_m2m_comp_task_start,
+ .task_stop = fsl_asrc_m2m_comp_task_stop,
+ .task_free = fsl_asrc_m2m_comp_task_free,
+};
+
+int fsl_asrc_m2m_suspend(struct fsl_asrc *asrc)
+{
+ struct fsl_asrc_pair *pair;
+ int i;
+
+ for (i = 0; i < PAIR_CTX_NUM; i++) {
+ pair = asrc->pair[i];
+ if (!pair)
+ continue;
+ if (!completion_done(&pair->complete[IN])) {
+ if (pair->dma_chan[IN])
+ dmaengine_terminate_all(pair->dma_chan[IN]);
+ asrc_input_dma_callback((void *)pair);
+ }
+ if (!completion_done(&pair->complete[OUT])) {
+ if (pair->dma_chan[OUT])
+ dmaengine_terminate_all(pair->dma_chan[OUT]);
+ asrc_output_dma_callback((void *)pair);
+ }
+
+ if (asrc->m2m_pair_suspend)
+ asrc->m2m_pair_suspend(pair);
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(fsl_asrc_m2m_suspend);
+
+int fsl_asrc_m2m_resume(struct fsl_asrc *asrc)
+{
+ struct fsl_asrc_pair *pair;
+ int i;
+
+ for (i = 0; i < PAIR_CTX_NUM; i++) {
+ pair = asrc->pair[i];
+ if (!pair)
+ continue;
+ if (asrc->m2m_pair_resume)
+ asrc->m2m_pair_resume(pair);
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(fsl_asrc_m2m_resume);
+
+int fsl_asrc_m2m_init(struct fsl_asrc *asrc)
+{
+ struct device *dev = &asrc->pdev->dev;
+ struct snd_card *card;
+ struct snd_compr *compr;
+ int ret;
+
+ ret = snd_card_new(dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
+ THIS_MODULE, 0, &card);
+ if (ret < 0)
+ return ret;
+
+ strscpy(card->driver, "fsl-asrc-m2m", sizeof(card->driver));
+ strscpy(card->shortname, "ASRC-M2M", sizeof(card->shortname));
+ strscpy(card->longname, "ASRC-M2M", sizeof(card->shortname));
+
+ asrc->card = card;
+
+ compr = devm_kzalloc(dev, sizeof(*compr), GFP_KERNEL);
+ if (!compr) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ compr->ops = &fsl_asrc_m2m_compr_ops;
+ compr->private_data = asrc;
+
+ ret = snd_compress_new(card, 0, SND_COMPRESS_ACCEL, "ASRC M2M", compr);
+ if (ret < 0)
+ goto err;
+
+ ret = snd_card_register(card);
+ if (ret < 0)
+ goto err;
+
+ return 0;
+err:
+ snd_card_free(card);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(fsl_asrc_m2m_init);
+
+void fsl_asrc_m2m_exit(struct fsl_asrc *asrc)
+{
+ struct snd_card *card = asrc->card;
+
+ snd_card_free(card);
+}
+EXPORT_SYMBOL_GPL(fsl_asrc_m2m_exit);
+
+MODULE_IMPORT_NS("DMA_BUF");
+MODULE_AUTHOR("Shengjiu Wang <Shengjiu.Wang@nxp.com>");
+MODULE_DESCRIPTION("Freescale ASRC M2M driver");
+MODULE_LICENSE("GPL");