From 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:46:07 +0000
Subject: [PATCH] add audio
---
kernel/sound/soc/soc-generic-dmaengine-pcm.c | 254 ++++++++++++++++++++------------------------------
1 files changed, 101 insertions(+), 153 deletions(-)
diff --git a/kernel/sound/soc/soc-generic-dmaengine-pcm.c b/kernel/sound/soc/soc-generic-dmaengine-pcm.c
index f04b8ae..f99f90d 100644
--- a/kernel/sound/soc/soc-generic-dmaengine-pcm.c
+++ b/kernel/sound/soc/soc-generic-dmaengine-pcm.c
@@ -25,18 +25,6 @@
*/
#define SND_DMAENGINE_PCM_FLAG_NO_RESIDUE BIT(31)
-struct dmaengine_pcm {
- struct dma_chan *chan[SNDRV_PCM_STREAM_LAST + 1];
- const struct snd_dmaengine_pcm_config *config;
- struct snd_soc_component component;
- unsigned int flags;
-};
-
-static struct dmaengine_pcm *soc_component_to_pcm(struct snd_soc_component *p)
-{
- return container_of(p, struct dmaengine_pcm, component);
-}
-
static struct device *dmaengine_dma_dev(struct dmaengine_pcm *pcm,
struct snd_pcm_substream *substream)
{
@@ -62,11 +50,17 @@
int snd_dmaengine_pcm_prepare_slave_config(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, struct dma_slave_config *slave_config)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct snd_dmaengine_dai_dma_data *dma_data;
int ret;
- dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
+ if (rtd->num_cpus > 1) {
+ dev_err(rtd->dev,
+ "%s doesn't support Multi CPU yet\n", __func__);
+ return -EINVAL;
+ }
+
+ dma_data = snd_soc_dai_get_dma_data(asoc_rtd_to_cpu(rtd, 0), substream);
ret = snd_hwparams_to_dma_slave_config(substream, params, slave_config);
if (ret)
@@ -79,12 +73,10 @@
}
EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_prepare_slave_config);
-static int dmaengine_pcm_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
+static int dmaengine_pcm_hw_params(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_component *component =
- snd_soc_rtdcom_lookup(rtd, SND_DMAENGINE_PCM_DRV_NAME);
struct dmaengine_pcm *pcm = soc_component_to_pcm(component);
struct dma_chan *chan = snd_dmaengine_pcm_get_chan(substream);
int (*prepare_slave_config)(struct snd_pcm_substream *substream,
@@ -110,31 +102,31 @@
return ret;
}
- return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
+ return 0;
}
-static int dmaengine_pcm_set_runtime_hwparams(struct snd_pcm_substream *substream)
+static int
+dmaengine_pcm_set_runtime_hwparams(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_component *component =
- snd_soc_rtdcom_lookup(rtd, SND_DMAENGINE_PCM_DRV_NAME);
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct dmaengine_pcm *pcm = soc_component_to_pcm(component);
struct device *dma_dev = dmaengine_dma_dev(pcm, substream);
struct dma_chan *chan = pcm->chan[substream->stream];
struct snd_dmaengine_dai_dma_data *dma_data;
- struct dma_slave_caps dma_caps;
struct snd_pcm_hardware hw;
- u32 addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |
- BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |
- BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
- snd_pcm_format_t i;
- int ret;
+
+ if (rtd->num_cpus > 1) {
+ dev_err(rtd->dev,
+ "%s doesn't support Multi CPU yet\n", __func__);
+ return -EINVAL;
+ }
if (pcm->config && pcm->config->pcm_hardware)
return snd_soc_set_runtime_hwparams(substream,
pcm->config->pcm_hardware);
- dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
+ dma_data = snd_soc_dai_get_dma_data(asoc_rtd_to_cpu(rtd, 0), substream);
memset(&hw, 0, sizeof(hw));
hw.info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
@@ -149,87 +141,61 @@
if (pcm->flags & SND_DMAENGINE_PCM_FLAG_NO_RESIDUE)
hw.info |= SNDRV_PCM_INFO_BATCH;
- ret = dma_get_slave_caps(chan, &dma_caps);
- if (ret == 0) {
- if (dma_caps.cmd_pause && dma_caps.cmd_resume)
- hw.info |= SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME;
- if (dma_caps.residue_granularity <= DMA_RESIDUE_GRANULARITY_SEGMENT)
- hw.info |= SNDRV_PCM_INFO_BATCH;
-
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- addr_widths = dma_caps.dst_addr_widths;
- else
- addr_widths = dma_caps.src_addr_widths;
- }
-
- /*
- * If SND_DMAENGINE_PCM_DAI_FLAG_PACK is set keep
- * hw.formats set to 0, meaning no restrictions are in place.
- * In this case it's the responsibility of the DAI driver to
- * provide the supported format information.
+ /**
+ * FIXME: Remove the return value check to align with the code
+ * before adding snd_dmaengine_pcm_refine_runtime_hwparams
+ * function.
*/
- if (!(dma_data->flags & SND_DMAENGINE_PCM_DAI_FLAG_PACK))
- /*
- * Prepare formats mask for valid/allowed sample types. If the
- * dma does not have support for the given physical word size,
- * it needs to be masked out so user space can not use the
- * format which produces corrupted audio.
- * In case the dma driver does not implement the slave_caps the
- * default assumption is that it supports 1, 2 and 4 bytes
- * widths.
- */
- for (i = SNDRV_PCM_FORMAT_FIRST; i <= SNDRV_PCM_FORMAT_LAST; i++) {
- int bits = snd_pcm_format_physical_width(i);
-
- /*
- * Enable only samples with DMA supported physical
- * widths
- */
- switch (bits) {
- case 8:
- case 16:
- case 24:
- case 32:
- case 64:
- if (addr_widths & (1 << (bits / 8)))
- hw.formats |= pcm_format_to_bits(i);
- break;
- default:
- /* Unsupported types */
- break;
- }
- }
+ snd_dmaengine_pcm_refine_runtime_hwparams(substream,
+ dma_data,
+ &hw,
+ chan);
return snd_soc_set_runtime_hwparams(substream, &hw);
}
-static int dmaengine_pcm_open(struct snd_pcm_substream *substream)
+static int dmaengine_pcm_open(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_component *component =
- snd_soc_rtdcom_lookup(rtd, SND_DMAENGINE_PCM_DRV_NAME);
struct dmaengine_pcm *pcm = soc_component_to_pcm(component);
struct dma_chan *chan = pcm->chan[substream->stream];
int ret;
- ret = dmaengine_pcm_set_runtime_hwparams(substream);
+ ret = dmaengine_pcm_set_runtime_hwparams(component, substream);
if (ret)
return ret;
return snd_dmaengine_pcm_open(substream, chan);
}
+static int dmaengine_pcm_close(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ return snd_dmaengine_pcm_close(substream);
+}
+
+static int dmaengine_pcm_trigger(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream, int cmd)
+{
+ return snd_dmaengine_pcm_trigger(substream, cmd);
+}
+
static struct dma_chan *dmaengine_pcm_compat_request_channel(
+ struct snd_soc_component *component,
struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_substream *substream)
{
- struct snd_soc_component *component =
- snd_soc_rtdcom_lookup(rtd, SND_DMAENGINE_PCM_DRV_NAME);
struct dmaengine_pcm *pcm = soc_component_to_pcm(component);
struct snd_dmaengine_dai_dma_data *dma_data;
dma_filter_fn fn = NULL;
- dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
+ if (rtd->num_cpus > 1) {
+ dev_err(rtd->dev,
+ "%s doesn't support Multi CPU yet\n", __func__);
+ return NULL;
+ }
+
+ dma_data = snd_soc_dai_get_dma_data(asoc_rtd_to_cpu(rtd, 0), substream);
if ((pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX) && pcm->chan[0])
return pcm->chan[0];
@@ -262,19 +228,16 @@
return true;
}
-static int dmaengine_pcm_new(struct snd_soc_pcm_runtime *rtd)
+static int dmaengine_pcm_new(struct snd_soc_component *component,
+ struct snd_soc_pcm_runtime *rtd)
{
- struct snd_soc_component *component =
- snd_soc_rtdcom_lookup(rtd, SND_DMAENGINE_PCM_DRV_NAME);
struct dmaengine_pcm *pcm = soc_component_to_pcm(component);
const struct snd_dmaengine_pcm_config *config = pcm->config;
struct device *dev = component->dev;
- struct snd_dmaengine_dai_dma_data *dma_data;
struct snd_pcm_substream *substream;
size_t prealloc_buffer_size;
size_t max_buffer_size;
unsigned int i;
- int ret;
if (config && config->prealloc_buffer_size) {
prealloc_buffer_size = config->prealloc_buffer_size;
@@ -284,21 +247,18 @@
max_buffer_size = SIZE_MAX;
}
- for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_CAPTURE; i++) {
+ for_each_pcm_streams(i) {
substream = rtd->pcm->streams[i].substream;
if (!substream)
continue;
- dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
-
- if (!pcm->chan[i] &&
- (pcm->flags & SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME))
+ if (!pcm->chan[i] && config && config->chan_names[i])
pcm->chan[i] = dma_request_slave_channel(dev,
- dma_data->chan_name);
+ config->chan_names[i]);
if (!pcm->chan[i] && (pcm->flags & SND_DMAENGINE_PCM_FLAG_COMPAT)) {
- pcm->chan[i] = dmaengine_pcm_compat_request_channel(rtd,
- substream);
+ pcm->chan[i] = dmaengine_pcm_compat_request_channel(
+ component, rtd, substream);
}
if (!pcm->chan[i]) {
@@ -307,21 +267,19 @@
return -EINVAL;
}
- ret = snd_pcm_lib_preallocate_pages(substream,
+ snd_pcm_set_managed_buffer(substream,
SNDRV_DMA_TYPE_DEV_IRAM,
dmaengine_dma_dev(pcm, substream),
prealloc_buffer_size,
max_buffer_size);
- if (ret)
- return ret;
if (!dmaengine_pcm_can_report_residue(dev, pcm->chan[i]))
pcm->flags |= SND_DMAENGINE_PCM_FLAG_NO_RESIDUE;
if (rtd->pcm->streams[i].pcm->name[0] == '\0') {
- strncpy(rtd->pcm->streams[i].pcm->name,
- rtd->pcm->streams[i].pcm->id,
- sizeof(rtd->pcm->streams[i].pcm->name));
+ strscpy_pad(rtd->pcm->streams[i].pcm->name,
+ rtd->pcm->streams[i].pcm->id,
+ sizeof(rtd->pcm->streams[i].pcm->name));
}
}
@@ -329,11 +287,9 @@
}
static snd_pcm_uframes_t dmaengine_pcm_pointer(
+ struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_component *component =
- snd_soc_rtdcom_lookup(rtd, SND_DMAENGINE_PCM_DRV_NAME);
struct dmaengine_pcm *pcm = soc_component_to_pcm(component);
if (pcm->flags & SND_DMAENGINE_PCM_FLAG_NO_RESIDUE)
@@ -342,13 +298,11 @@
return snd_dmaengine_pcm_pointer(substream);
}
-static int dmaengine_copy_user(struct snd_pcm_substream *substream,
+static int dmaengine_copy_user(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
int channel, unsigned long hwoff,
void __user *buf, unsigned long bytes)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_component *component =
- snd_soc_rtdcom_lookup(rtd, SND_DMAENGINE_PCM_DRV_NAME);
struct snd_pcm_runtime *runtime = substream->runtime;
struct dmaengine_pcm *pcm = soc_component_to_pcm(component);
int (*process)(struct snd_pcm_substream *substream,
@@ -376,39 +330,27 @@
return 0;
}
-static const struct snd_pcm_ops dmaengine_pcm_ops = {
- .open = dmaengine_pcm_open,
- .close = snd_dmaengine_pcm_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = dmaengine_pcm_hw_params,
- .hw_free = snd_pcm_lib_free_pages,
- .trigger = snd_dmaengine_pcm_trigger,
- .pointer = dmaengine_pcm_pointer,
-};
-
-static const struct snd_pcm_ops dmaengine_pcm_process_ops = {
- .open = dmaengine_pcm_open,
- .close = snd_dmaengine_pcm_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = dmaengine_pcm_hw_params,
- .hw_free = snd_pcm_lib_free_pages,
- .trigger = snd_dmaengine_pcm_trigger,
- .pointer = dmaengine_pcm_pointer,
- .copy_user = dmaengine_copy_user,
-};
-
static const struct snd_soc_component_driver dmaengine_pcm_component = {
.name = SND_DMAENGINE_PCM_DRV_NAME,
.probe_order = SND_SOC_COMP_ORDER_LATE,
- .ops = &dmaengine_pcm_ops,
- .pcm_new = dmaengine_pcm_new,
+ .open = dmaengine_pcm_open,
+ .close = dmaengine_pcm_close,
+ .hw_params = dmaengine_pcm_hw_params,
+ .trigger = dmaengine_pcm_trigger,
+ .pointer = dmaengine_pcm_pointer,
+ .pcm_construct = dmaengine_pcm_new,
};
static const struct snd_soc_component_driver dmaengine_pcm_component_process = {
.name = SND_DMAENGINE_PCM_DRV_NAME,
.probe_order = SND_SOC_COMP_ORDER_LATE,
- .ops = &dmaengine_pcm_process_ops,
- .pcm_new = dmaengine_pcm_new,
+ .open = dmaengine_pcm_open,
+ .close = dmaengine_pcm_close,
+ .hw_params = dmaengine_pcm_hw_params,
+ .trigger = dmaengine_pcm_trigger,
+ .pointer = dmaengine_pcm_pointer,
+ .copy_user = dmaengine_copy_user,
+ .pcm_construct = dmaengine_pcm_new,
};
static const char * const dmaengine_pcm_dma_channel_names[] = {
@@ -423,9 +365,8 @@
const char *name;
struct dma_chan *chan;
- if ((pcm->flags & (SND_DMAENGINE_PCM_FLAG_NO_DT |
- SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME)) ||
- !dev->of_node)
+ if ((pcm->flags & SND_DMAENGINE_PCM_FLAG_NO_DT) || (!dev->of_node &&
+ !(config && config->dma_dev && config->dma_dev->of_node)))
return 0;
if (config && config->dma_dev) {
@@ -440,16 +381,20 @@
dev = config->dma_dev;
}
- for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_CAPTURE;
- i++) {
+ for_each_pcm_streams(i) {
if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX)
name = "rx-tx";
else
name = dmaengine_pcm_dma_channel_names[i];
if (config && config->chan_names[i])
name = config->chan_names[i];
- chan = dma_request_slave_channel_reason(dev, name);
+ chan = dma_request_chan(dev, name);
if (IS_ERR(chan)) {
+ /*
+ * Only report probe deferral errors, channels
+ * might not be present for devices that
+ * support only TX or only RX.
+ */
if (PTR_ERR(chan) == -EPROBE_DEFER)
return -EPROBE_DEFER;
pcm->chan[i] = NULL;
@@ -470,8 +415,7 @@
{
unsigned int i;
- for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_CAPTURE;
- i++) {
+ for_each_pcm_streams(i) {
if (!pcm->chan[i])
continue;
dma_release_channel(pcm->chan[i]);
@@ -489,6 +433,7 @@
int snd_dmaengine_pcm_register(struct device *dev,
const struct snd_dmaengine_pcm_config *config, unsigned int flags)
{
+ const struct snd_soc_component_driver *driver;
struct dmaengine_pcm *pcm;
int ret;
@@ -507,12 +452,15 @@
goto err_free_dma;
if (config && config->process)
- ret = snd_soc_add_component(dev, &pcm->component,
- &dmaengine_pcm_component_process,
- NULL, 0);
+ driver = &dmaengine_pcm_component_process;
else
- ret = snd_soc_add_component(dev, &pcm->component,
- &dmaengine_pcm_component, NULL, 0);
+ driver = &dmaengine_pcm_component;
+
+ ret = snd_soc_component_initialize(&pcm->component, driver, dev);
+ if (ret)
+ goto err_free_dma;
+
+ ret = snd_soc_add_component(&pcm->component, NULL, 0);
if (ret)
goto err_free_dma;
@@ -543,7 +491,7 @@
pcm = soc_component_to_pcm(component);
- snd_soc_unregister_component(dev);
+ snd_soc_unregister_component_by_driver(dev, component->driver);
dmaengine_pcm_release_chan(pcm);
kfree(pcm);
}
--
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