IPC4 based firmware supports dynamically loaded external libraries.
The libraries will be not stored alongside of the firmware or tplg files.
For intel platforms the default path will be:
intel/avs-lib|sof-ipc4-lib/<platform>/ if a community key is used on the
given machine then the libraries will be under 'community' directory, like
it is done for the firmware itself.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Reviewed-by: Chao Song <chao.song@xxxxxxxxx>
Reviewed-by: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx>
---
include/sound/sof.h | 6 +++++-
sound/soc/sof/sof-pci-dev.c | 26 ++++++++++++++++++++++++++
2 files changed, 31 insertions(+), 1 deletion(-)
diff --git a/include/sound/sof.h b/include/sound/sof.h
index e1f2f02666a7..266e66318f9c 100644
--- a/include/sound/sof.h
+++ b/include/sound/sof.h
@@ -82,6 +82,9 @@ struct snd_sof_pdata {
const char *tplg_filename_prefix;
const char *tplg_filename;
+ /* loadable external libraries available under this directory */
+ const char *fw_lib_prefix;
+
/* machine */
struct platform_device *pdev_mach;
const struct snd_soc_acpi_mach *machine;
@@ -127,8 +130,9 @@ struct sof_dev_desc {
unsigned int ipc_supported_mask;
enum sof_ipc_type ipc_default;
- /* defaults paths for firmware and topology files */
+ /* defaults paths for firmware, library and topology files */
const char *default_fw_path[SOF_IPC_TYPE_COUNT];
+ const char *default_lib_path[SOF_IPC_TYPE_COUNT];
const char *default_tplg_path[SOF_IPC_TYPE_COUNT];
/* default firmware name */
diff --git a/sound/soc/sof/sof-pci-dev.c b/sound/soc/sof/sof-pci-dev.c
index 643fd1036d60..f5ece43d0ec2 100644
--- a/sound/soc/sof/sof-pci-dev.c
+++ b/sound/soc/sof/sof-pci-dev.c
@@ -28,6 +28,10 @@ static char *fw_filename;
module_param(fw_filename, charp, 0444);
MODULE_PARM_DESC(fw_filename, "alternate filename for SOF firmware.");
+static char *lib_path;
+module_param(lib_path, charp, 0444);
+MODULE_PARM_DESC(lib_path, "alternate path for SOF firmware libraries.");
+
static char *tplg_path;
module_param(tplg_path, charp, 0444);
MODULE_PARM_DESC(tplg_path, "alternate path for SOF topology.");
@@ -272,6 +276,28 @@ int sof_pci_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
sof_pdata->desc->default_fw_path[sof_pdata->ipc_type];
}
+ if (lib_path) {
+ sof_pdata->fw_lib_prefix = lib_path;
+
+ dev_dbg(dev, "Module parameter used, changed fw_lib path to %s\n",
+ sof_pdata->fw_lib_prefix);
+
+ } else if (sof_pdata->desc->default_lib_path[sof_pdata->ipc_type]) {
+ if (dmi_check_system(community_key_platforms) && sof_dmi_use_community_key) {
+ sof_pdata->fw_lib_prefix =
+ devm_kasprintf(dev, GFP_KERNEL, "%s/%s",
+ sof_pdata->desc->default_lib_path[sof_pdata->ipc_type],
+ "community");
+
+ dev_dbg(dev,
+ "Platform uses community key, changed fw_lib path to %s\n",
+ sof_pdata->fw_lib_prefix);
+ } else {
+ sof_pdata->fw_lib_prefix =
+ sof_pdata->desc->default_lib_path[sof_pdata->ipc_type];
+ }
+ }
+
if (tplg_path)
sof_pdata->tplg_filename_prefix = tplg_path;
else
--
2.38.0
