linux-kernel - [PATCH v2 6/9] ASoC: Intel: Skylake: Move snd_hdac_i915_init to before probe

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Message-Id: <20230719164141.228073-7-maarten.lankhorst@linux.intel.com>
Date:   Wed, 19 Jul 2023 18:41:38 +0200
From:   Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
To:     alsa-devel@...a-project.org
Cc:     sound-open-firmware@...a-project.org, linux-kernel@...r.kernel.org,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        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>
Subject: [PATCH v2 6/9] ASoC: Intel: Skylake: Move snd_hdac_i915_init to before probe_work.

Now that we can use -EPROBE_DEFER, it's no longer required to spin off
the snd_hdac_i915_init into a workqueue. It's likely the whole workqueue
can be destroyed, but I don't have the means to test this.

Removing the workqueue would simplify init even further, but is left
as exercise for the reviewer.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
Acked-by: Mark Brown <broonie@...nel.org>
---
 sound/soc/intel/skylake/skl.c | 31 +++++++++----------------------
 1 file changed, 9 insertions(+), 22 deletions(-)

diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c
index 4d93b86904673..ff80d83a9fb72 100644
--- a/sound/soc/intel/skylake/skl.c
+++ b/sound/soc/intel/skylake/skl.c
@@ -783,23 +783,6 @@ static void skl_codec_create(struct hdac_bus *bus)
 	}
 }
 
-static int skl_i915_init(struct hdac_bus *bus)
-{
-	int err;
-
-	/*
-	 * The HDMI codec is in GPU so we need to ensure that it is powered
-	 * up and ready for probe
-	 */
-	err = snd_hdac_i915_init(bus, true);
-	if (err < 0)
-		return err;
-
-	snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);
-
-	return 0;
-}
-
 static void skl_probe_work(struct work_struct *work)
 {
 	struct skl_dev *skl = container_of(work, struct skl_dev, probe_work);
@@ -807,11 +790,8 @@ static void skl_probe_work(struct work_struct *work)
 	struct hdac_ext_link *hlink;
 	int err;
 
-	if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) {
-		err = skl_i915_init(bus);
-		if (err < 0)
-			return;
-	}
+	if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI))
+		snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);
 
 	skl_init_pci(skl);
 	skl_dum_set(bus);
@@ -1075,10 +1055,17 @@ static int skl_probe(struct pci_dev *pci,
 		goto out_dsp_free;
 	}
 
+	if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) {
+		err = snd_hdac_i915_init(bus, false);
+		if (err < 0)
+			goto out_dmic_unregister;
+	}
 	schedule_work(&skl->probe_work);
 
 	return 0;
 
+out_dmic_unregister:
+	skl_dmic_device_unregister(skl);
 out_dsp_free:
 	skl_free_dsp(skl);
 out_clk_free:
-- 
2.39.2