linux-kernel - [PATCH v6 11/12] ASoC: SOF: Intel: Move binding to display driver outside of deferred probe

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Message-Id: <20231004145540.32321-12-maarten.lankhorst@linux.intel.com>
Date:   Wed,  4 Oct 2023 16:55:39 +0200
From:   Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
To:     alsa-devel@...a-project.org
Cc:     Maarten Lankhorst <dev@...khorst.se>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
        Peter Ujfalusi <peter.ujfalusi@...ux.intel.com>,
        Bard Liao <yung-chuan.liao@...ux.intel.com>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        Daniel Baluta <daniel.baluta@....com>,
        linux-kernel@...r.kernel.org, sound-open-firmware@...a-project.org,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
Subject: [PATCH v6 11/12] 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@...ux.intel.com>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
---
 sound/soc/sof/intel/hda-common-ops.c |  1 +
 sound/soc/sof/intel/hda.c            | 18 ++++++------------
 sound/soc/sof/intel/hda.h            |  1 +
 3 files changed, 8 insertions(+), 12 deletions(-)

diff --git a/sound/soc/sof/intel/hda-common-ops.c b/sound/soc/sof/intel/hda-common-ops.c
index 1cc18fb2b75b..26105d8f1bdc 100644
--- a/sound/soc/sof/intel/hda-common-ops.c
+++ b/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 */
 
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index 86a2571488bc..4eb7f04b8ae1 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -1160,6 +1160,7 @@ 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;
@@ -1169,7 +1170,6 @@ 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",
@@ -1193,12 +1193,6 @@ 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;
 
@@ -1307,8 +1301,6 @@ 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;
 }
@@ -1317,7 +1309,6 @@ 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;
 
@@ -1368,10 +1359,13 @@ 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;
diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h
index e13cdc933ca6..8e846684279e 100644
--- a/sound/soc/sof/intel/hda.h
+++ b/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);
-- 
2.40.1