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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>
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@ -137,6 +137,80 @@ static void skl_set_suspend_active(struct snd_pcm_substream *substream,
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skl->supend_active--;
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}
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int skl_pcm_host_dma_prepare(struct device *dev, struct skl_pipe_params *params)
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{
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struct hdac_ext_bus *ebus = dev_get_drvdata(dev);
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struct hdac_bus *bus = ebus_to_hbus(ebus);
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unsigned int format_val;
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struct hdac_stream *hstream;
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struct hdac_ext_stream *stream;
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int err;
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hstream = snd_hdac_get_stream(bus, params->stream,
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params->host_dma_id + 1);
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if (!hstream)
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return -EINVAL;
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stream = stream_to_hdac_ext_stream(hstream);
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snd_hdac_ext_stream_decouple(ebus, stream, true);
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format_val = snd_hdac_calc_stream_format(params->s_freq,
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params->ch, params->format, 32, 0);
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dev_dbg(dev, "format_val=%d, rate=%d, ch=%d, format=%d\n",
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format_val, params->s_freq, params->ch, params->format);
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snd_hdac_stream_reset(hdac_stream(stream));
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err = snd_hdac_stream_set_params(hdac_stream(stream), format_val);
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if (err < 0)
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return err;
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err = snd_hdac_stream_setup(hdac_stream(stream));
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if (err < 0)
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return err;
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hdac_stream(stream)->prepared = 1;
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return 0;
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}
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int skl_pcm_link_dma_prepare(struct device *dev, struct skl_pipe_params *params)
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{
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struct hdac_ext_bus *ebus = dev_get_drvdata(dev);
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struct hdac_bus *bus = ebus_to_hbus(ebus);
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unsigned int format_val;
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struct hdac_stream *hstream;
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struct hdac_ext_stream *stream;
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struct hdac_ext_link *link;
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hstream = snd_hdac_get_stream(bus, params->stream,
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params->link_dma_id + 1);
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if (!hstream)
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return -EINVAL;
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stream = stream_to_hdac_ext_stream(hstream);
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snd_hdac_ext_stream_decouple(ebus, stream, true);
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format_val = snd_hdac_calc_stream_format(params->s_freq,
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params->ch, params->format, 24, 0);
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dev_dbg(dev, "format_val=%d, rate=%d, ch=%d, format=%d\n",
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format_val, params->s_freq, params->ch, params->format);
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snd_hdac_ext_link_stream_reset(stream);
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snd_hdac_ext_link_stream_setup(stream, format_val);
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list_for_each_entry(link, &ebus->hlink_list, list) {
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if (link->index == params->link_index)
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snd_hdac_ext_link_set_stream_id(link,
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hstream->stream_tag);
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}
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stream->link_prepared = 1;
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return 0;
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}
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static int skl_pcm_open(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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@ -385,4 +385,8 @@ int skl_get_module_params(struct skl_sst *ctx, u32 *params, int size,
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struct skl_module_cfg *skl_tplg_be_get_cpr_module(struct snd_soc_dai *dai,
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int stream);
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enum skl_bitdepth skl_get_bit_depth(int params);
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int skl_pcm_host_dma_prepare(struct device *dev,
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struct skl_pipe_params *params);
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int skl_pcm_link_dma_prepare(struct device *dev,
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struct skl_pipe_params *params);
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#endif
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