ASoC: SOF: add COMPILE_TEST for PCI options

Add COMPILE_TEST and use IS_ENABLED(CONFIG_PCI) to sort out
cross-compilation issues.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/Kconfig

@@ -10,7 +10,7 @@ if SND_SOC_SOF_TOPLEVEL
 
 config SND_SOC_SOF_PCI
 	tristate "SOF PCI enumeration support"
-	depends on PCI
+	depends on PCI || COMPILE_TEST
 	select SND_SOC_SOF
 	select SND_SOC_ACPI if ACPI
 	select SND_SOC_SOF_OPTIONS

sound/soc/sof/intel/hda.c

@@ -506,7 +506,9 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
 	 * TODO: support interrupt mode selection with kernel parameter
 	 *       support msi multiple vectors
 	 */
+#if IS_ENABLED(CONFIG_PCI)
 	ret = pci_alloc_irq_vectors(pci, 1, 1, PCI_IRQ_MSI);
+#endif
 	if (ret < 0) {
 		dev_info(sdev->dev, "use legacy interrupt mode\n");
 		/*
@@ -518,7 +520,9 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
 		sdev->msi_enabled = 0;
 	} else {
 		dev_info(sdev->dev, "use msi interrupt mode\n");
+#if IS_ENABLED(CONFIG_PCI)
 		hdev->irq = pci_irq_vector(pci, 0);
+#endif
 		/* ipc irq number is the same of hda irq */
 		sdev->ipc_irq = hdev->irq;
 		sdev->msi_enabled = 1;
@@ -622,8 +626,10 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
 free_hda_irq:
 	free_irq(hdev->irq, bus);
 free_irq_vector:
+#if IS_ENABLED(CONFIG_PCI)
 	if (sdev->msi_enabled)
 		pci_free_irq_vectors(pci);
+#endif
 free_streams:
 	hda_dsp_stream_free(sdev);
 /* dsp_unmap: not currently used */
@@ -638,7 +644,6 @@ int hda_dsp_remove(struct snd_sof_dev *sdev)
 {
 	struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
 	struct hdac_bus *bus = sof_to_bus(sdev);
-	struct pci_dev *pci = to_pci_dev(sdev->dev);
 	const struct sof_intel_dsp_desc *chip = hda->desc;
 
 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
@@ -667,8 +672,12 @@ int hda_dsp_remove(struct snd_sof_dev *sdev)
 
 	free_irq(sdev->ipc_irq, sdev);
 	free_irq(hda->irq, bus);
-	if (sdev->msi_enabled)
+#if IS_ENABLED(CONFIG_PCI)
+	if (sdev->msi_enabled) {
+		struct pci_dev *pci = to_pci_dev(sdev->dev);
 		pci_free_irq_vectors(pci);
+	}
+#endif
 
 	hda_dsp_stream_free(sdev);
 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)

sound/soc/sof/sof-pci-dev.c

@@ -251,9 +251,11 @@ static int sof_pci_probe(struct pci_dev *pci,
 	if (!sof_pdata)
 		return -ENOMEM;
 
+#if IS_ENABLED(CONFIG_PCI)
 	ret = pcim_enable_device(pci);
 	if (ret < 0)
 		return ret;
+#endif
 
 	ret = pci_request_regions(pci, "Audio DSP");
 	if (ret < 0)
@@ -386,6 +388,7 @@ static const struct pci_device_id sof_pci_ids[] = {
 };
 MODULE_DEVICE_TABLE(pci, sof_pci_ids);
 
+#if IS_ENABLED(CONFIG_PCI)
 /* pci_driver definition */
 static struct pci_driver snd_sof_pci_driver = {
 	.name = "sof-audio-pci",
@@ -397,5 +400,6 @@ static struct pci_driver snd_sof_pci_driver = {
 	},
 };
 module_pci_driver(snd_sof_pci_driver);
+#endif
 
 MODULE_LICENSE("Dual BSD/GPL");