[alsa-devel] [PATCH 01/12] ASoC: Intel: Skylake: Add helper function to setup host/link dma
jeeja.kp at intel.com
jeeja.kp at intel.com
Fri Dec 2 18:41:38 CET 2016
From: Jeeja KP <jeeja.kp at intel.com>
This patch adds helper function to configure the host/link DMA when the
DMA is in decoupled mode.
Next patch adds the usage of this helper routines for configuring DMA
in Mixer event handler.
Signed-off-by: Jeeja KP <jeeja.kp at intel.com>
---
sound/soc/intel/skylake/skl-pcm.c | 82 ++++++++++++++++++++++++++++++++++
sound/soc/intel/skylake/skl-topology.c | 2 +
sound/soc/intel/skylake/skl-topology.h | 6 +++
3 files changed, 90 insertions(+)
diff --git a/sound/soc/intel/skylake/skl-pcm.c b/sound/soc/intel/skylake/skl-pcm.c
index 84b5101..8a7b6f7 100644
--- a/sound/soc/intel/skylake/skl-pcm.c
+++ b/sound/soc/intel/skylake/skl-pcm.c
@@ -137,6 +137,80 @@ static void skl_set_suspend_active(struct snd_pcm_substream *substream,
skl->supend_active--;
}
+int skl_pcm_host_dma_prepare(struct device *dev, struct skl_pipe_params *params)
+{
+ struct hdac_ext_bus *ebus = dev_get_drvdata(dev);
+ struct hdac_bus *bus = ebus_to_hbus(ebus);
+ unsigned int format_val;
+ struct hdac_stream *hstream;
+ struct hdac_ext_stream *stream;
+ int err;
+
+ hstream = snd_hdac_get_stream(bus, params->stream,
+ params->host_dma_id + 1);
+ if (!hstream)
+ return -EINVAL;
+
+ stream = stream_to_hdac_ext_stream(hstream);
+ snd_hdac_ext_stream_decouple(ebus, stream, true);
+
+ format_val = snd_hdac_calc_stream_format(params->s_freq,
+ params->ch, params->format, 32, 0);
+
+ dev_dbg(dev, "format_val=%d, rate=%d, ch=%d, format=%d\n",
+ format_val, params->s_freq, params->ch, params->format);
+
+ snd_hdac_stream_reset(hdac_stream(stream));
+ err = snd_hdac_stream_set_params(hdac_stream(stream), format_val);
+ if (err < 0)
+ return err;
+
+ err = snd_hdac_stream_setup(hdac_stream(stream));
+ if (err < 0)
+ return err;
+
+ hdac_stream(stream)->prepared = 1;
+
+ return 0;
+}
+
+int skl_pcm_link_dma_prepare(struct device *dev, struct skl_pipe_params *params)
+{
+ struct hdac_ext_bus *ebus = dev_get_drvdata(dev);
+ struct hdac_bus *bus = ebus_to_hbus(ebus);
+ unsigned int format_val;
+ struct hdac_stream *hstream;
+ struct hdac_ext_stream *stream;
+ struct hdac_ext_link *link;
+
+ hstream = snd_hdac_get_stream(bus, params->stream,
+ params->link_dma_id + 1);
+ if (!hstream)
+ return -EINVAL;
+
+ stream = stream_to_hdac_ext_stream(hstream);
+ snd_hdac_ext_stream_decouple(ebus, stream, true);
+ format_val = snd_hdac_calc_stream_format(params->s_freq,
+ params->ch, params->format, 24, 0);
+
+ dev_dbg(dev, "format_val=%d, rate=%d, ch=%d, format=%d\n",
+ format_val, params->s_freq, params->ch, params->format);
+
+ snd_hdac_ext_link_stream_reset(stream);
+
+ snd_hdac_ext_link_stream_setup(stream, format_val);
+
+ list_for_each_entry(link, &ebus->hlink_list, list) {
+ if (link->index == params->link_index)
+ snd_hdac_ext_link_set_stream_id(link,
+ hstream->stream_tag);
+ }
+
+ stream->link_prepared = 1;
+
+ return 0;
+}
+
static int skl_pcm_open(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
@@ -292,6 +366,7 @@ static int skl_pcm_hw_params(struct snd_pcm_substream *substream,
p_params.s_freq = params_rate(params);
p_params.host_dma_id = dma_id;
p_params.stream = substream->stream;
+ p_params.format = params_format(params);
m_cfg = skl_tplg_fe_get_cpr_module(dai, p_params.stream);
if (m_cfg)
@@ -506,6 +581,7 @@ static int skl_link_hw_params(struct snd_pcm_substream *substream,
struct hdac_ext_dma_params *dma_params;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
struct skl_pipe_params p_params = {0};
+ struct hdac_ext_link *link;
link_dev = snd_hdac_ext_stream_assign(ebus, substream,
HDAC_EXT_STREAM_TYPE_LINK);
@@ -514,6 +590,10 @@ static int skl_link_hw_params(struct snd_pcm_substream *substream,
snd_soc_dai_set_dma_data(dai, substream, (void *)link_dev);
+ link = snd_hdac_ext_bus_get_link(ebus, rtd->codec->component.name);
+ if (!link)
+ return -EINVAL;
+
/* set the stream tag in the codec dai dma params */
dma_params = snd_soc_dai_get_dma_data(codec_dai, substream);
if (dma_params)
@@ -524,6 +604,8 @@ static int skl_link_hw_params(struct snd_pcm_substream *substream,
p_params.s_freq = params_rate(params);
p_params.stream = substream->stream;
p_params.link_dma_id = hdac_stream(link_dev)->stream_tag - 1;
+ p_params.link_index = link->index;
+ p_params.format = params_format(params);
return skl_tplg_be_update_params(dai, &p_params);
}
diff --git a/sound/soc/intel/skylake/skl-topology.c b/sound/soc/intel/skylake/skl-topology.c
index bd313c9..484d451 100644
--- a/sound/soc/intel/skylake/skl-topology.c
+++ b/sound/soc/intel/skylake/skl-topology.c
@@ -1207,6 +1207,7 @@ static void skl_tplg_fill_dma_id(struct skl_module_cfg *mcfg,
switch (mcfg->dev_type) {
case SKL_DEVICE_HDALINK:
pipe->p_params->link_dma_id = params->link_dma_id;
+ pipe->p_params->link_index = params->link_index;
break;
case SKL_DEVICE_HDAHOST:
@@ -1220,6 +1221,7 @@ static void skl_tplg_fill_dma_id(struct skl_module_cfg *mcfg,
pipe->p_params->ch = params->ch;
pipe->p_params->s_freq = params->s_freq;
pipe->p_params->stream = params->stream;
+ pipe->p_params->format = params->format;
} else {
memcpy(pipe->p_params, params, sizeof(*params));
diff --git a/sound/soc/intel/skylake/skl-topology.h b/sound/soc/intel/skylake/skl-topology.h
index 08d3928..a0d3158 100644
--- a/sound/soc/intel/skylake/skl-topology.h
+++ b/sound/soc/intel/skylake/skl-topology.h
@@ -254,6 +254,8 @@ struct skl_pipe_params {
u32 s_freq;
u32 s_fmt;
u8 linktype;
+ snd_pcm_format_t format;
+ int link_index;
int stream;
};
@@ -383,4 +385,8 @@ int skl_get_module_params(struct skl_sst *ctx, u32 *params, int size,
struct skl_module_cfg *skl_tplg_be_get_cpr_module(struct snd_soc_dai *dai,
int stream);
enum skl_bitdepth skl_get_bit_depth(int params);
+int skl_pcm_host_dma_prepare(struct device *dev,
+ struct skl_pipe_params *params);
+int skl_pcm_link_dma_prepare(struct device *dev,
+ struct skl_pipe_params *params);
#endif
--
2.5.0
More information about the Alsa-devel
mailing list