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authorJeeja KP <jeeja.kp@intel.com>2016-12-08 13:41:13 +0530
committerMark Brown <broonie@kernel.org>2016-12-15 12:15:59 +0000
commitad036bdee57ab2287535fe53864bb5154e101991 (patch)
tree2580bd7dc4f299d458d4328258c3255e96391042 /sound/soc/intel/skylake/skl-pcm.c
parentbb704a737cecc1c4c9f1b0251aa79d8276308ccc (diff)
ASoC: Intel: Skylake: Add helper function to setup host/link dma
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@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/intel/skylake/skl-pcm.c')
-rw-r--r--sound/soc/intel/skylake/skl-pcm.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/sound/soc/intel/skylake/skl-pcm.c b/sound/soc/intel/skylake/skl-pcm.c
index aebae234152c..1abff8e1a298 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)
{