ASoC: SOF: Intel: Move binding to display driver outside of deferred probe

Now that we can use -EPROBE_DEFER, it's no longer required to spin off
the snd_hdac_i915_init into a workqueue.

Use the -EPROBE_DEFER mechanism instead, which must be returned in the
probe function.

The previously added probe_early can be used for this,
and we also use the newly added remove_late for unbinding afterwards.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20231009115437.99976-13-maarten.lankhorst@linux.intel.comSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/soc/sof/intel/hda-common-ops.c

@@ -19,6 +19,7 @@ struct snd_sof_dsp_ops sof_hda_common_ops = {
 	.probe_early	= hda_dsp_probe_early,
 	.probe		= hda_dsp_probe,
 	.remove		= hda_dsp_remove,
+	.remove_late	= hda_dsp_remove_late,
 
 	/* Register IO uses direct mmio */
 

sound/soc/sof/intel/hda.c

@@ -1168,6 +1168,7 @@ int hda_dsp_probe_early(struct snd_sof_dev *sdev)
 		return -ENOMEM;
 	sdev->pdata->hw_pdata = hdev;
 	hdev->desc = chip;
+	ret = hda_init(sdev);
 
 err:
 	return ret;
@@ -1177,7 +1178,6 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
 {
 	struct pci_dev *pci = to_pci_dev(sdev->dev);
 	struct sof_intel_hda_dev *hdev = sdev->pdata->hw_pdata;
-	struct hdac_bus *bus;
 	int ret = 0;
 
 	hdev->dmic_dev = platform_device_register_data(sdev->dev, "dmic-codec",
@@ -1201,12 +1201,6 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
 	if (sdev->dspless_mode_selected)
 		hdev->no_ipc_position = 1;
 
-	/* set up HDA base */
-	bus = sof_to_bus(sdev);
-	ret = hda_init(sdev);
-	if (ret < 0)
-		goto hdac_bus_unmap;
-
 	if (sdev->dspless_mode_selected)
 		goto skip_dsp_setup;
 
@@ -1315,8 +1309,6 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
 		iounmap(sdev->bar[HDA_DSP_BAR]);
 hdac_bus_unmap:
 	platform_device_unregister(hdev->dmic_dev);
-	iounmap(bus->remap_addr);
-	hda_codec_i915_exit(sdev);
 
 	return ret;
 }
@@ -1325,7 +1317,6 @@ int hda_dsp_remove(struct snd_sof_dev *sdev)
 {
 	struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
 	const struct sof_intel_dsp_desc *chip = hda->desc;
-	struct hdac_bus *bus = sof_to_bus(sdev);
 	struct pci_dev *pci = to_pci_dev(sdev->dev);
 	struct nhlt_acpi_table *nhlt = hda->nhlt;
 
@@ -1376,10 +1367,13 @@ int hda_dsp_remove(struct snd_sof_dev *sdev)
 	if (!sdev->dspless_mode_selected)
 		iounmap(sdev->bar[HDA_DSP_BAR]);
 
-	iounmap(bus->remap_addr);
+	return 0;
+}
 
+int hda_dsp_remove_late(struct snd_sof_dev *sdev)
+{
+	iounmap(sof_to_bus(sdev)->remap_addr);
 	sof_hda_bus_exit(sdev);
-
 	hda_codec_i915_exit(sdev);
 
 	return 0;

sound/soc/sof/intel/hda.h

@@ -576,6 +576,7 @@ struct sof_intel_hda_stream {
 int hda_dsp_probe_early(struct snd_sof_dev *sdev);
 int hda_dsp_probe(struct snd_sof_dev *sdev);
 int hda_dsp_remove(struct snd_sof_dev *sdev);
+int hda_dsp_remove_late(struct snd_sof_dev *sdev);
 int hda_dsp_core_power_up(struct snd_sof_dev *sdev, unsigned int core_mask);
 int hda_dsp_core_run(struct snd_sof_dev *sdev, unsigned int core_mask);
 int hda_dsp_enable_core(struct snd_sof_dev *sdev, unsigned int core_mask);