ASoC: SOF: expose a couple of functions

Expose the mixer_to_ipc() and ipc_to_mixer() functions for reuse in
IPC4.

Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20220426171743.171061-6-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/sound/soc/sof/sof-audio.h b/sound/soc/sof/sof-audio.h
index 88def7074d2d..ab8787aab8a0 100644
--- a/sound/soc/sof/sof-audio.h
+++ b/sound/soc/sof/sof-audio.h
@@ -48,6 +48,26 @@ enum sof_widget_op {
 
 #define SOF_TLV_ITEMS 3
 
+static inline u32 mixer_to_ipc(unsigned int value, u32 *volume_map, int size)
+{
+	if (value >= size)
+		return volume_map[size - 1];
+
+	return volume_map[value];
+}
+
+static inline u32 ipc_to_mixer(u32 value, u32 *volume_map, int size)
+{
+	int i;
+
+	for (i = 0; i < size; i++) {
+		if (volume_map[i] >= value)
+			return i;
+	}
+
+	return i - 1;
+}
+
 struct snd_sof_widget;
 struct snd_sof_route;
 struct snd_sof_control;