From a669ec5f4bc485a56b2f379e7c7197a810872cc1 Mon Sep 17 00:00:00 2001
From: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Date: Fri, 6 May 2022 16:26:40 +0300
Subject: [PATCH] ASoC: SOF: sof-client: Add API to get the maximum IPC payload size
Git-commit: a669ec5f4bc485a56b2f379e7c7197a810872cc1
Patch-mainline: v5.19-rc1
References: jsc#PED-850

Provide a way for the client drivers to query the maximum payload size of
an IPC message.
Currently clients do not have access to this information and they can only
use the SOF_IPC_MSG_MAX_SIZE defined value.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220506132647.18690-2-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 sound/soc/sof/sof-client.c | 8 ++++++++
 sound/soc/sof/sof-client.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/sound/soc/sof/sof-client.c b/sound/soc/sof/sof-client.c
index 5fb3eb21bf7d..18839a8a03c3 100644
--- a/sound/soc/sof/sof-client.c
+++ b/sound/soc/sof/sof-client.c
@@ -319,6 +319,14 @@ const struct sof_ipc_fw_version *sof_client_get_fw_version(struct sof_client_dev
 }
 EXPORT_SYMBOL_NS_GPL(sof_client_get_fw_version, SND_SOC_SOF_CLIENT);
 
+size_t sof_client_get_ipc_max_payload_size(struct sof_client_dev *cdev)
+{
+	struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
+
+	return sdev->ipc->max_payload_size;
+}
+EXPORT_SYMBOL_NS_GPL(sof_client_get_ipc_max_payload_size, SND_SOC_SOF_CLIENT);
+
 /* module refcount management of SOF core */
 int sof_client_core_module_get(struct sof_client_dev *cdev)
 {
diff --git a/sound/soc/sof/sof-client.h b/sound/soc/sof/sof-client.h
index 4b6394b4c694..4b5787156775 100644
--- a/sound/soc/sof/sof-client.h
+++ b/sound/soc/sof/sof-client.h
@@ -41,6 +41,7 @@ int sof_client_ipc_tx_message(struct sof_client_dev *cdev, void *ipc_msg,
 struct dentry *sof_client_get_debugfs_root(struct sof_client_dev *cdev);
 struct device *sof_client_get_dma_dev(struct sof_client_dev *cdev);
 const struct sof_ipc_fw_version *sof_client_get_fw_version(struct sof_client_dev *cdev);
+size_t sof_client_get_ipc_max_payload_size(struct sof_client_dev *cdev);
 
 /* module refcount management of SOF core */
 int sof_client_core_module_get(struct sof_client_dev *cdev);
-- 
2.35.3