[Intel-xe] [PATCH 09/15] ALSA: hda: i915: Add an allow_modprobe argument to snd_hdac_i915_init

[Maarten Lankhorst]

Xe is a new GPU driver that re-uses the display (and sound) code from
i915. It's no longer possible to load i915, as the GPU can be driven
by the xe driver instead.

The new behavior will return -EPROBE_DEFER, and wait for a compatible
driver to be loaded instead of modprobing i915.

Converting all drivers at the same time is a lot of work, instead we
will convert each user one by one.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen at linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Link: https://lore.kernel.org/r/20231009115437.99976-8-maarten.lankhorst@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai at suse.de>
(cherry picked from commit 32f4e921fe8e39969f532abfb388cc31d18a88c5)
---
 include/sound/hda_i915.h        | 4 ++--
 sound/hda/hdac_i915.c           | 8 ++++----
 sound/pci/hda/hda_intel.c       | 2 +-
 sound/soc/intel/avs/core.c      | 2 +-
 sound/soc/intel/skylake/skl.c   | 2 +-
 sound/soc/sof/intel/hda-codec.c | 2 +-
 6 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h
index 6b79614a893b9..f91bd66360865 100644
--- a/include/sound/hda_i915.h
+++ b/include/sound/hda_i915.h
@@ -9,12 +9,12 @@
 
 #ifdef CONFIG_SND_HDA_I915
 void snd_hdac_i915_set_bclk(struct hdac_bus *bus);
-int snd_hdac_i915_init(struct hdac_bus *bus);
+int snd_hdac_i915_init(struct hdac_bus *bus, bool allow_modprobe);
 #else
 static inline void snd_hdac_i915_set_bclk(struct hdac_bus *bus)
 {
 }
-static inline int snd_hdac_i915_init(struct hdac_bus *bus)
+static inline int snd_hdac_i915_init(struct hdac_bus *bus, bool allow_modprobe)
 {
 	return -ENODEV;
 }
diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c
index 961d99422bc5a..9f77cec65a211 100644
--- a/sound/hda/hdac_i915.c
+++ b/sound/hda/hdac_i915.c
@@ -175,7 +175,7 @@ static bool dg1_gfx_present(void)
  *
  * Returns zero for success or a negative error code.
  */
-int snd_hdac_i915_init(struct hdac_bus *bus)
+int snd_hdac_i915_init(struct hdac_bus *bus, bool allow_modprobe)
 {
 	struct drm_audio_component *acomp;
 	int err;
@@ -194,7 +194,7 @@ int snd_hdac_i915_init(struct hdac_bus *bus)
 	acomp = bus->audio_component;
 	if (!acomp)
 		return -ENODEV;
-	if (!acomp->ops) {
+	if (allow_modprobe && !acomp->ops) {
 		if (!IS_ENABLED(CONFIG_MODULES) ||
 		    !request_module("i915")) {
 			/* 60s timeout */
@@ -203,9 +203,9 @@ int snd_hdac_i915_init(struct hdac_bus *bus)
 		}
 	}
 	if (!acomp->ops) {
-		dev_info(bus->dev, "couldn't bind with audio component\n");
+		int err = allow_modprobe ? -ENODEV : -EPROBE_DEFER;
 		snd_hdac_acomp_exit(bus);
-		return -ENODEV;
+		return dev_err_probe(bus->dev, err, "couldn't bind with audio component\n");
 	}
 	return 0;
 }
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 12caabf54c63c..e42ad0e816e19 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2266,7 +2266,7 @@ static int azx_probe_continue(struct azx *chip)
 
 	/* bind with i915 if needed */
 	if (chip->driver_caps & AZX_DCAPS_I915_COMPONENT) {
-		err = snd_hdac_i915_init(bus);
+		err = snd_hdac_i915_init(bus, true);
 		if (err < 0) {
 			/* if the controller is bound only with HDMI/DP
 			 * (for HSW and BDW), we need to abort the probe;
diff --git a/sound/soc/intel/avs/core.c b/sound/soc/intel/avs/core.c
index 859b217fc761b..bbb40339c75f4 100644
--- a/sound/soc/intel/avs/core.c
+++ b/sound/soc/intel/avs/core.c
@@ -191,7 +191,7 @@ static void avs_hda_probe_work(struct work_struct *work)
 
 	pm_runtime_set_active(bus->dev); /* clear runtime_error flag */
 
-	ret = snd_hdac_i915_init(bus);
+	ret = snd_hdac_i915_init(bus, true);
 	if (ret < 0)
 		dev_info(bus->dev, "i915 init unsuccessful: %d\n", ret);
 
diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c
index 77408a981b977..4f7acb4f6680b 100644
--- a/sound/soc/intel/skylake/skl.c
+++ b/sound/soc/intel/skylake/skl.c
@@ -791,7 +791,7 @@ static int skl_i915_init(struct hdac_bus *bus)
 	 * 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);
+	err = snd_hdac_i915_init(bus, true);
 	if (err < 0)
 		return err;
 
diff --git a/sound/soc/sof/intel/hda-codec.c b/sound/soc/sof/intel/hda-codec.c
index 8a5e99a898ecb..f1fd5b44aaac9 100644
--- a/sound/soc/sof/intel/hda-codec.c
+++ b/sound/soc/sof/intel/hda-codec.c
@@ -415,7 +415,7 @@ int hda_codec_i915_init(struct snd_sof_dev *sdev)
 		return 0;
 
 	/* i915 exposes a HDA codec for HDMI audio */
-	ret = snd_hdac_i915_init(bus);
+	ret = snd_hdac_i915_init(bus, true);
 	if (ret < 0)
 		return ret;
 
-- 
2.39.2