ASoC: SOF: IPC: add ipc dump function

Dump IPC status when IPC timed out. IPC status is platform specific and
need bind to 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/ipc.c

@@ -207,6 +207,7 @@ static int tx_wait_done(struct snd_sof_ipc *ipc, struct snd_sof_ipc_msg *msg,
 		dev_err(sdev->dev, "error: ipc timed out for 0x%x size %d\n",
 			hdr->cmd, hdr->size);
 		snd_sof_dsp_dbg_dump(ipc->sdev, SOF_DBG_REGS | SOF_DBG_MBOX);
+		snd_sof_ipc_dump(ipc->sdev);
 		snd_sof_trace_notify_for_error(ipc->sdev);
 		ret = -ETIMEDOUT;
 	} else {

sound/soc/sof/ops.h

@@ -155,6 +155,12 @@ static inline void snd_sof_dsp_dbg_dump(struct snd_sof_dev *sdev, u32 flags)
 		return sof_ops(sdev)->dbg_dump(sdev, flags);
 }
 
+static inline void snd_sof_ipc_dump(struct snd_sof_dev *sdev)
+{
+	if (sof_ops(sdev)->ipc_dump)
+		return sof_ops(sdev)->ipc_dump(sdev);
+}
+
 /* register IO */
 static inline void snd_sof_dsp_write(struct snd_sof_dev *sdev, u32 bar,
 				     u32 offset, u32 value)

sound/soc/sof/sof-priv.h

@@ -176,6 +176,7 @@ struct snd_sof_dsp_ops {
 	int debug_map_count; /* optional */
 	void (*dbg_dump)(struct snd_sof_dev *sof_dev,
 			 u32 flags); /* optional */
+	void (*ipc_dump)(struct snd_sof_dev *sof_dev); /* optional */
 
 	/* host DMA trace initialization */
 	int (*trace_init)(struct snd_sof_dev *sdev,