ASoC: SOF: IPC4: Add helper for looking up module by UUID

Add a simple helper to walk the loaded libraries and their modules to make
the ipc4-topology not aware of the underlying infrastructure and simplify
the code.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Chao Song <chao.song@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20221020121238.18339-11-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/sound/soc/sof/ipc4-loader.c b/sound/soc/sof/ipc4-loader.c
index 5506ec997328..b7e8b3f3d4f0 100644
--- a/sound/soc/sof/ipc4-loader.c
+++ b/sound/soc/sof/ipc4-loader.c
@@ -160,6 +160,27 @@ static size_t sof_ipc4_fw_parse_basefw_ext_man(struct snd_sof_dev *sdev)
 	return payload_offset;
 }
 
+struct sof_ipc4_fw_module *sof_ipc4_find_module_by_uuid(struct snd_sof_dev *sdev,
+							const guid_t *uuid)
+{
+	struct sof_ipc4_fw_data *ipc4_data = sdev->private;
+	struct sof_ipc4_fw_library *fw_lib;
+	unsigned long lib_id;
+	int i;
+
+	if (guid_is_null(uuid))
+		return NULL;
+
+	xa_for_each(&ipc4_data->fw_lib_xa, lib_id, fw_lib) {
+		for (i = 0; i < fw_lib->num_modules; i++) {
+			if (guid_equal(uuid, &fw_lib->modules[i].man4_module_entry.uuid))
+				return &fw_lib->modules[i];
+		}
+	}
+
+	return NULL;
+}
+
 static int sof_ipc4_validate_firmware(struct snd_sof_dev *sdev)
 {
 	struct sof_ipc4_fw_data *ipc4_data = sdev->private;