ASoC: SOF: Make sof_suspend/resume IPC agnostic

Add a new set of IPC ops for PM with the ctx_save and ctx_restore ops
for suspend/resume and implement the ops for IPC3.

Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220317175044.1752400-4-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 44 insertions, 0 deletions

diff --git a/sound/soc/sof/ipc3.c b/sound/soc/sof/ipc3.c
new file mode 100644
index 000000000000..e71cf30908c6
--- /dev/null
+++ b/sound/soc/sof/ipc3.c
@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+//
+// This file is provided under a dual BSD/GPLv2 license.  When using or
+// redistributing this file, you may do so under either license.
+//
+// Copyright(c) 2021 Intel Corporation. All rights reserved.
+//
+//
+
+#include "sof-priv.h"
+#include "ipc3-ops.h"
+
+static int sof_ipc3_ctx_ipc(struct snd_sof_dev *sdev, int cmd)
+{
+	struct sof_ipc_pm_ctx pm_ctx = {
+		.hdr.size = sizeof(pm_ctx),
+		.hdr.cmd = SOF_IPC_GLB_PM_MSG | cmd,
+	};
+	struct sof_ipc_reply reply;
+
+	/* send ctx save ipc to dsp */
+	return sof_ipc_tx_message(sdev->ipc, pm_ctx.hdr.cmd, &pm_ctx,
+				  sizeof(pm_ctx), &reply, sizeof(reply));
+}
+
+static int sof_ipc3_ctx_save(struct snd_sof_dev *sdev)
+{
+	return sof_ipc3_ctx_ipc(sdev, SOF_IPC_PM_CTX_SAVE);
+}
+
+static int sof_ipc3_ctx_restore(struct snd_sof_dev *sdev)
+{
+	return sof_ipc3_ctx_ipc(sdev, SOF_IPC_PM_CTX_RESTORE);
+}
+
+static const struct sof_ipc_pm_ops ipc3_pm_ops = {
+	.ctx_save = sof_ipc3_ctx_save,
+	.ctx_restore = sof_ipc3_ctx_restore,
+};
+
+const struct sof_ipc_ops ipc3_ops = {
+	.tplg = &ipc3_tplg_ops,
+	.pm = &ipc3_pm_ops,
+};