[PATCH v2 7/8] ASoC: SOF: core: Skip firmware test for custom loaders

[Cristian Ciocaltea <cristian.ciocaltea@xxxxxxxxxxxxx>]

The ACP driver for Vangogh platform uses a quirk for Valve Galileo
device to setup a custom firmware loader, which neither requires nor
uses the firmware file indicated via the default_fw_filename member of
struct sof_dev_desc.

Since commit 6c393ebbd74a ("ASoC: SOF: core: Implement IPC version
fallback if firmware files are missing"), the provided filename gets
verified and triggers a fatal error on probe:

[ 7.719337] snd_sof_amd_vangogh 0000:04:00.5: enabling device (0000 -> 0002)
[ 7.721486] snd_sof_amd_vangogh 0000:04:00.5: SOF firmware and/or topology file not found.
[ 7.721565] snd_sof_amd_vangogh 0000:04:00.5: Supported default profiles
[ 7.721569] snd_sof_amd_vangogh 0000:04:00.5: - ipc type 0 (Requested):
[ 7.721573] snd_sof_amd_vangogh 0000:04:00.5:  Firmware file: amd/sof/sof-vangogh.ri
[ 7.721577] snd_sof_amd_vangogh 0000:04:00.5:  Topology file: amd/sof-tplg/sof-vangogh-nau8821-max.tplg
[ 7.721582] snd_sof_amd_vangogh 0000:04:00.5: Check if you have 'sof-firmware' package installed.
[ 7.721585] snd_sof_amd_vangogh 0000:04:00.5: Optionally it can be manually downloaded from:
[ 7.721589] snd_sof_amd_vangogh 0000:04:00.5:    https://github.com/thesofproject/sof-bin/
[ 7.721997] snd_sof_amd_vangogh: probe of 0000:04:00.5 failed with error -2

According to AMD, a combined ".ri" file which includes the code and data
segments cannot be used due to a limitation preventing the code image to
be signed on build time.

Fix the issue by skipping the firmware file test if a custom loader is
being used instead of the generic one.

Fixes: 6c393ebbd74a ("ASoC: SOF: core: Implement IPC version fallback if firmware files are missing")
Co-developed-by: Péter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Signed-off-by: Péter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@xxxxxxxxxxxxx>
---
 sound/soc/sof/fw-file-profile.c | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/sound/soc/sof/fw-file-profile.c b/sound/soc/sof/fw-file-profile.c
index 138a1ca2c4a8..b56b14232444 100644
--- a/sound/soc/sof/fw-file-profile.c
+++ b/sound/soc/sof/fw-file-profile.c
@@ -89,6 +89,12 @@ static int sof_test_topology_file(struct device *dev,
 	return ret;
 }
 
+static bool sof_platform_uses_generic_loader(struct snd_sof_dev *sdev)
+{
+	return (sdev->pdata->desc->ops->load_firmware == snd_sof_load_firmware_raw ||
+		sdev->pdata->desc->ops->load_firmware == snd_sof_load_firmware_memcpy);
+}
+
 static int
 sof_file_profile_for_ipc_type(struct snd_sof_dev *sdev,
 			      enum sof_ipc_type ipc_type,
@@ -130,7 +136,8 @@ sof_file_profile_for_ipc_type(struct snd_sof_dev *sdev,
 	 * For default path and firmware name do a verification before
 	 * continuing further.
 	 */
-	if (base_profile->fw_path || base_profile->fw_name) {
+	if ((base_profile->fw_path || base_profile->fw_name) &&
+	    sof_platform_uses_generic_loader(sdev)) {
 		ret = sof_test_firmware_file(dev, out_profile, &ipc_type);
 		if (ret)
 			return ret;
@@ -181,7 +188,8 @@ sof_file_profile_for_ipc_type(struct snd_sof_dev *sdev,
 	out_profile->ipc_type = ipc_type;
 
 	/* Test only default firmware file */
-	if (!base_profile->fw_path && !base_profile->fw_name)
+	if ((!base_profile->fw_path && !base_profile->fw_name) &&
+	    sof_platform_uses_generic_loader(sdev))
 		ret = sof_test_firmware_file(dev, out_profile, NULL);
 
 	if (!ret)
@@ -267,7 +275,11 @@ static void sof_print_profile_info(struct snd_sof_dev *sdev,
 
 	dev_info(dev, "Firmware paths/files for ipc type %d:\n", profile->ipc_type);
 
-	dev_info(dev, " Firmware file:     %s/%s\n", profile->fw_path, profile->fw_name);
+	/* The firmware path is only valid when generic loader is used */
+	if (sof_platform_uses_generic_loader(sdev))
+		dev_info(dev, " Firmware file:     %s/%s\n",
+			 profile->fw_path, profile->fw_name);
+
 	if (profile->fw_lib_path)
 		dev_info(dev, " Firmware lib path: %s\n", profile->fw_lib_path);
 	dev_info(dev, " Topology file:     %s/%s\n", profile->tplg_path, profile->tplg_name);
-- 
2.43.0