ALSA: hda: Add code_loading parameter to stream setup

AudioDSP firmware is the one who kicks SDxFIFOS calculation when a
stream is decoupled mode. During firmware bring up procedure, there is
no firmware running and the code-loading stream is always a decoupled
one. So, there is none to trigger the calculation and we end up with
false-positive timeout (-110) messages.

Signed-off-by: Cezary Rojewski <[e-mail]>
Acked-by: Mark Brown <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Takashi Iwai <[e-mail]>

include/sound/hdaudio.h

···
 struct hdac_stream *snd_hdac_get_stream(struct hdac_bus *bus,
 					int dir, int stream_tag);
 
-int snd_hdac_stream_setup(struct hdac_stream *azx_dev);
+int snd_hdac_stream_setup(struct hdac_stream *azx_dev, bool code_loading);
 void snd_hdac_stream_cleanup(struct hdac_stream *azx_dev);
 int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev);
 int snd_hdac_stream_set_params(struct hdac_stream *azx_dev,

include/sound/hdaudio_ext.h

···
 	bool link_locked:1;
 	bool link_prepared;
 
-	int (*host_setup)(struct hdac_stream *);
+	int (*host_setup)(struct hdac_stream *, bool);
 
 	struct snd_pcm_substream *link_substream;
 };
···
 void snd_hdac_ext_stream_clear(struct hdac_ext_stream *hext_stream);
 void snd_hdac_ext_stream_reset(struct hdac_ext_stream *hext_stream);
 int snd_hdac_ext_stream_setup(struct hdac_ext_stream *hext_stream, int fmt);
-int snd_hdac_ext_host_stream_setup(struct hdac_ext_stream *hext_stream);
+int snd_hdac_ext_host_stream_setup(struct hdac_ext_stream *hext_stream, bool code_loading);
 
 struct hdac_ext_link {
 	struct hdac_bus *bus;

sound/hda/ext/hdac_ext_stream.c

···
 /**
  * snd_hdac_ext_host_stream_setup - Setup a HOST stream.
  * @hext_stream: HDAudio stream to set up.
+ * @code_loading: Whether the stream is for PCM or code-loading.
  *
  * Return: Zero on success or negative error code.
  */
-int snd_hdac_ext_host_stream_setup(struct hdac_ext_stream *hext_stream)
+int snd_hdac_ext_host_stream_setup(struct hdac_ext_stream *hext_stream, bool code_loading)
 {
-	return hext_stream->host_setup(hdac_stream(hext_stream));
+	return hext_stream->host_setup(hdac_stream(hext_stream), code_loading);
 }
 EXPORT_SYMBOL_GPL(snd_hdac_ext_host_stream_setup);
 
···
  * snd_hdac_apl_host_stream_setup - Setup a HOST stream following procedure
  *                                  recommended for ApolloLake devices.
  * @hstream: HDAudio stream to set up.
+ * @code_loading: Whether the stream is for PCM or code-loading.
  *
  * Return: Zero on success or negative error code.
  */
-static int snd_hdac_apl_host_stream_setup(struct hdac_stream *hstream)
+static int snd_hdac_apl_host_stream_setup(struct hdac_stream *hstream, bool code_loading)
 {
 	struct hdac_ext_stream *hext_stream = stream_to_hdac_ext_stream(hstream);
 	int ret;
 
 	snd_hdac_ext_stream_decouple(hstream->bus, hext_stream, false);
-	ret = snd_hdac_stream_setup(hstream);
+	ret = snd_hdac_stream_setup(hstream, code_loading);
 	snd_hdac_ext_stream_decouple(hstream->bus, hext_stream, true);
 
 	return ret;
···
 				 int num_stream, int dir)
 {
 	struct pci_dev *pci = to_pci_dev(bus->dev);
-	int (*setup_op)(struct hdac_stream *);
+	int (*setup_op)(struct hdac_stream *, bool);
 	int stream_tag = 0;
 	int i, tag, idx = start_idx;
 

sound/hda/hdac_stream.c

···
 /**
  * snd_hdac_stream_setup -  set up the SD for streaming
  * @azx_dev: HD-audio core stream to set up
+ * @code_loading: Whether the stream is for PCM or code-loading.
  */
-int snd_hdac_stream_setup(struct hdac_stream *azx_dev)
+int snd_hdac_stream_setup(struct hdac_stream *azx_dev, bool code_loading)
 {
 	struct hdac_bus *bus = azx_dev->bus;
 	struct snd_pcm_runtime *runtime;
···
 	/* set the interrupt enable bits in the descriptor control register */
 	snd_hdac_stream_updatel(azx_dev, SD_CTL, 0, SD_INT_MASK);
 
-	/* Once SDxFMT is set, the controller programs SDxFIFOS to non-zero value. */
-	ret = snd_hdac_stream_readw_poll(azx_dev, SD_FIFOSIZE, reg, reg & AZX_SD_FIFOSIZE_MASK,
-					 3, 300);
-	if (ret)
-		dev_dbg(bus->dev, "polling SD_FIFOSIZE 0x%04x failed: %d\n",
-			AZX_REG_SD_FIFOSIZE, ret);
-	azx_dev->fifo_size = snd_hdac_stream_readw(azx_dev, SD_FIFOSIZE);
+	if (!code_loading) {
+		/* Once SDxFMT is set, the controller programs SDxFIFOS to non-zero value. */
+		ret = snd_hdac_stream_readw_poll(azx_dev, SD_FIFOSIZE, reg,
+						 reg & AZX_SD_FIFOSIZE_MASK, 3, 300);
+		if (ret)
+			dev_dbg(bus->dev, "polling SD_FIFOSIZE 0x%04x failed: %d\n",
+				AZX_REG_SD_FIFOSIZE, ret);
+		azx_dev->fifo_size = reg;
+	}
 
 	/* when LPIB delay correction gives a small negative value,
 	 * we ignore it; currently set the threshold statically to
···
 	if (err < 0)
 		goto error;
 
-	snd_hdac_stream_setup(azx_dev);
+	snd_hdac_stream_setup(azx_dev, true);
 	snd_hdac_dsp_unlock(azx_dev);
 	return azx_dev->stream_tag;
 

sound/pci/hda/hda_controller.c

···
 	if (err < 0)
 		goto unlock;
 
-	snd_hdac_stream_setup(azx_stream(azx_dev));
+	snd_hdac_stream_setup(azx_stream(azx_dev), false);
 
 	stream_tag = azx_dev->core.stream_tag;
 	/* CA-IBG chips need the playback stream starting from 1 */

sound/soc/intel/avs/pcm.c

···
 	if (ret < 0)
 		return ret;
 
-	ret = snd_hdac_ext_host_stream_setup(host_stream);
+	ret = snd_hdac_ext_host_stream_setup(host_stream, false);
 	if (ret < 0)
 		return ret;
 

sound/soc/intel/avs/probes.c

···
 	ret = snd_hdac_stream_set_params(hdac_stream(host_stream), format_val);
 	if (ret < 0)
 		return ret;
-	ret = snd_hdac_stream_setup(hdac_stream(host_stream));
+	ret = snd_hdac_stream_setup(hdac_stream(host_stream), false);
 	if (ret < 0)
 		return ret;
 

sound/soc/intel/skylake/skl-pcm.c

···
 	if (err < 0)
 		return err;
 
-	err = snd_hdac_ext_host_stream_setup(stream);
+	err = snd_hdac_ext_host_stream_setup(stream, false);
 	if (err < 0)
 		return err;