ASoC: SOF: Intel: APL: add ipc dump function

Add IPC dump function for APL plaform
Signed-off-by: Pan Xiuli <xiuli.pan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/intel/apl.c

@@ -55,6 +55,7 @@ const struct snd_sof_dsp_ops sof_apl_ops = {
 	.debug_map	= apl_dsp_debugfs,
 	.debug_map_count	= ARRAY_SIZE(apl_dsp_debugfs),
 	.dbg_dump	= hda_dsp_dump,
+	.ipc_dump	= hda_ipc_dump,
 
 	/* stream callbacks */
 	.pcm_open	= hda_dsp_pcm_open,

sound/soc/sof/intel/hda.c

@@ -179,6 +179,24 @@ void hda_dsp_dump(struct snd_sof_dev *sdev, u32 flags)
 	}
 }
 
+void hda_ipc_dump(struct snd_sof_dev *sdev)
+{
+	u32 hipcie;
+	u32 hipct;
+	u32 hipcctl;
+
+	/* read IPC status */
+	hipcie = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCIE);
+	hipct = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCT);
+	hipcctl = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCCTL);
+
+	/* dump the IPC regs */
+	/* TODO: parse the raw msg */
+	dev_err(sdev->dev,
+		"error: host status 0x%8.8x dsp status 0x%8.8x mask 0x%8.8x\n",
+		hipcie, hipct, hipcctl);
+}
+
 static int hda_init(struct snd_sof_dev *sdev)
 {
 	struct hda_bus *hbus;

sound/soc/sof/intel/hda.h

@@ -447,6 +447,7 @@ int hda_dsp_runtime_resume(struct snd_sof_dev *sdev);
 void hda_dsp_set_hw_params_upon_resume(struct snd_sof_dev *sdev);
 void hda_dsp_dump_skl(struct snd_sof_dev *sdev, u32 flags);
 void hda_dsp_dump(struct snd_sof_dev *sdev, u32 flags);
+void hda_ipc_dump(struct snd_sof_dev *sdev);
 
 /*
  * DSP PCM Operations.