[PATCH 01/16] ASoC: SOF: add definitions for different IPC types

[Pierre-Louis Bossart]

Add enum type to allow for different types of IPCs. The IPCv4 is
intended for Intel only as a convergence path with firmware used in
Windows. Follow-up patches will introduce different abstractions with
.ops and different search paths for firmware and topology files.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao at linux.intel.com>
Reviewed-by: Rander Wang <rander.wang at intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi at linux.intel.com>
---
 include/sound/sof.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/sound/sof.h b/include/sound/sof.h
index 7cdfc954df12..2658a38be5bd 100644
--- a/include/sound/sof.h
+++ b/include/sound/sof.h
@@ -47,6 +47,13 @@ enum sof_dsp_power_states {
 	SOF_DSP_PM_D3,
 };
 
+/* Definitions for multiple IPCs */
+enum sof_ipc_type {
+	SOF_IPC,
+	SOF_INTEL_IPC4,
+	SOF_IPC_TYPE_COUNT
+};
+
 /*
  * SOF Platform data.
  */
@@ -83,6 +90,8 @@ struct snd_sof_pdata {
 	const struct snd_soc_acpi_mach *machine;
 
 	void *hw_pdata;
+
+	enum sof_ipc_type ipc_type;
 };
 
 /*
-- 
2.30.2