ASoC: SOF: Introduce snd_sof_dsp_get_window_offset

This will allow us to export the offset for a memory window.
Signed-off-by: NDaniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20190807150203.26359-4-pierre-louis.bossart@linux.intel.comSigned-off-by: NMark Brown <broonie@kernel.org>

sound/soc/sof/ops.h

@@ -128,6 +128,15 @@ static inline int snd_sof_dsp_get_mailbox_offset(struct snd_sof_dev *sdev)
 	return -ENOTSUPP;
 }
 
+static inline int snd_sof_dsp_get_window_offset(struct snd_sof_dev *sdev,
+						u32 id)
+{
+	if (sof_ops(sdev)->get_window_offset)
+		return sof_ops(sdev)->get_window_offset(sdev, id);
+
+	dev_err(sdev->dev, "error: %s not defined\n", __func__);
+	return -ENOTSUPP;
+}
 /* power management */
 static inline int snd_sof_dsp_resume(struct snd_sof_dev *sdev)
 {

sound/soc/sof/sof-priv.h

@@ -199,6 +199,8 @@ struct snd_sof_dsp_ops {
 	int (*get_bar_index)(struct snd_sof_dev *sdev,
 			     u32 type); /* optional */
 	int (*get_mailbox_offset)(struct snd_sof_dev *sdev);/* mandatory for common loader code */
+	int (*get_window_offset)(struct snd_sof_dev *sdev,
+				 u32 id);/* mandatory for common loader code */
 
 	/* DAI ops */
 	struct snd_soc_dai_driver *drv;