linux-kernel - [PATCH v6 03/12] ASoC: SOF: Intel: hda: start splitting the probe

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Message-Id: <20231004145540.32321-4-maarten.lankhorst@linux.intel.com>
Date:   Wed,  4 Oct 2023 16:55:31 +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 03/12] ASoC: SOF: Intel: hda: start splitting the probe

From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

This patch moves the initial parts of the probe to the probe_early()
callback, which provides a much faster decision on whether the SOF
driver shall deal with a specific platform or yield to other Intel
drivers.

This is a limited functionality change, the bigger change is to move
the i915/Xe initialization to the probe_early().

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
Acked-by: Mark Brown <broonie@...nel.org>
---
 sound/soc/sof/intel/hda-common-ops.c |  1 +
 sound/soc/sof/intel/hda.c            | 16 +++++++++++++---
 sound/soc/sof/intel/hda.h            |  1 +
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/sound/soc/sof/intel/hda-common-ops.c b/sound/soc/sof/intel/hda-common-ops.c
index 8e1cd0babd32..1cc18fb2b75b 100644
--- a/sound/soc/sof/intel/hda-common-ops.c
+++ b/sound/soc/sof/intel/hda-common-ops.c
@@ -16,6 +16,7 @@
 
 struct snd_sof_dsp_ops sof_hda_common_ops = {
 	/* probe/remove/shutdown */
+	.probe_early	= hda_dsp_probe_early,
 	.probe		= hda_dsp_probe,
 	.remove		= hda_dsp_remove,
 
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index 15e6779efaa3..86a2571488bc 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -1118,11 +1118,10 @@ static irqreturn_t hda_dsp_interrupt_thread(int irq, void *context)
 	return IRQ_HANDLED;
 }
 
-int hda_dsp_probe(struct snd_sof_dev *sdev)
+int hda_dsp_probe_early(struct snd_sof_dev *sdev)
 {
 	struct pci_dev *pci = to_pci_dev(sdev->dev);
 	struct sof_intel_hda_dev *hdev;
-	struct hdac_bus *bus;
 	const struct sof_intel_dsp_desc *chip;
 	int ret = 0;
 
@@ -1162,6 +1161,17 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
 	sdev->pdata->hw_pdata = hdev;
 	hdev->desc = chip;
 
+err:
+	return ret;
+}
+
+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",
 						       PLATFORM_DEVID_NONE,
 						       NULL, 0);
@@ -1299,7 +1309,7 @@ int hda_dsp_probe(struct snd_sof_dev *sdev)
 	platform_device_unregister(hdev->dmic_dev);
 	iounmap(bus->remap_addr);
 	hda_codec_i915_exit(sdev);
-err:
+
 	return ret;
 }
 
diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h
index 5c517ec57d4a..e13cdc933ca6 100644
--- a/sound/soc/sof/intel/hda.h
+++ b/sound/soc/sof/intel/hda.h
@@ -573,6 +573,7 @@ struct sof_intel_hda_stream {
 /*
  * DSP Core services.
  */
+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_core_power_up(struct snd_sof_dev *sdev, unsigned int core_mask);
-- 
2.40.1