linux-kernel - [PATCH 4/4] i915/snd_hdac: I915 subcomponent for the snd

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Message-Id: <20190207232759.14553-4-daniel.vetter@ffwll.ch>
Date:   Fri,  8 Feb 2019 00:27:59 +0100
From:   Daniel Vetter <daniel.vetter@...ll.ch>
To:     DRI Development <dri-devel@...ts.freedesktop.org>
Cc:     Intel Graphics Development <intel-gfx@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Takashi Iwai <tiwai@...e.de>,
        Ramalingam C <ramalinagm.c@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Russell King <rmk+kernel@....linux.org.uk>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>
Subject: [PATCH 4/4] i915/snd_hdac: I915 subcomponent for the snd_hdac

Since we need multiple components for I915 for different purposes
(Audio & Mei_hdcp), we adopt the subcomponents methodology introduced
by the previous patch (mentioned below).

	Author: Daniel Vetter <daniel.vetter@...ll.ch>
	Date:   Mon Jan 28 17:08:20 2019 +0530

	    components: multiple components for a device

Reviewed-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by-by: Ramalingam C <ramalinagm.c@...el.com> (commit message)
Signed-off-by: Daniel Vetter <daniel.vetter@...ll.ch> (code)
cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
cc: Russell King <rmk+kernel@....linux.org.uk>
cc: Rafael J. Wysocki <rafael@...nel.org>
cc: Jaroslav Kysela <perex@...ex.cz>
cc: Takashi Iwai <tiwai@...e.com>
cc: Rodrigo Vivi <rodrigo.vivi@...el.com>
cc: Jani Nikula <jani.nikula@...ux.intel.com>
---
 drivers/gpu/drm/i915/intel_audio.c | 4 +++-
 include/drm/i915_component.h       | 4 ++++
 include/sound/hda_component.h      | 5 +++--
 sound/hda/hdac_component.c         | 4 ++--
 sound/hda/hdac_i915.c              | 6 ++++--
 5 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c
index de26cd0a5497..5104c6bbd66f 100644
--- a/drivers/gpu/drm/i915/intel_audio.c
+++ b/drivers/gpu/drm/i915/intel_audio.c
@@ -984,7 +984,9 @@ void i915_audio_component_init(struct drm_i915_private *dev_priv)
 {
 	int ret;
 
-	ret = component_add(dev_priv->drm.dev, &i915_audio_component_bind_ops);
+	ret = component_add_typed(dev_priv->drm.dev,
+				  &i915_audio_component_bind_ops,
+				  I915_COMPONENT_AUDIO);
 	if (ret < 0) {
 		DRM_ERROR("failed to add audio component (%d)\n", ret);
 		/* continue with reduced functionality */
diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h
index fca22d463e1b..72fbb037f9b3 100644
--- a/include/drm/i915_component.h
+++ b/include/drm/i915_component.h
@@ -26,6 +26,10 @@
 
 #include "drm_audio_component.h"
 
+enum i915_component_type {
+	I915_COMPONENT_AUDIO = 1,
+};
+
 /* MAX_PORT is the number of port
  * It must be sync with I915_MAX_PORTS defined i915_drv.h
  */
diff --git a/include/sound/hda_component.h b/include/sound/hda_component.h
index 2ec31b358950..d4804c72d959 100644
--- a/include/sound/hda_component.h
+++ b/include/sound/hda_component.h
@@ -20,7 +20,7 @@ int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id,
 			   bool *audio_enabled, char *buffer, int max_bytes);
 int snd_hdac_acomp_init(struct hdac_bus *bus,
 			const struct drm_audio_component_audio_ops *aops,
-			int (*match_master)(struct device *, void *),
+			int (*match_master)(struct device *, int, void *),
 			size_t extra_size);
 int snd_hdac_acomp_exit(struct hdac_bus *bus);
 int snd_hdac_acomp_register_notifier(struct hdac_bus *bus,
@@ -47,7 +47,8 @@ static inline int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t ni
 }
 static inline int snd_hdac_acomp_init(struct hdac_bus *bus,
 				      const struct drm_audio_component_audio_ops *aops,
-				      int (*match_master)(struct device *, void *),
+				      int (*match_master)(struct device *,
+							  int, void *),
 				      size_t extra_size)
 {
 	return -ENODEV;
diff --git a/sound/hda/hdac_component.c b/sound/hda/hdac_component.c
index a6d37b9d6413..5c95933e739a 100644
--- a/sound/hda/hdac_component.c
+++ b/sound/hda/hdac_component.c
@@ -269,7 +269,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_acomp_register_notifier);
  */
 int snd_hdac_acomp_init(struct hdac_bus *bus,
 			const struct drm_audio_component_audio_ops *aops,
-			int (*match_master)(struct device *, void *),
+			int (*match_master)(struct device *, int, void *),
 			size_t extra_size)
 {
 	struct component_match *match = NULL;
@@ -288,7 +288,7 @@ int snd_hdac_acomp_init(struct hdac_bus *bus,
 	bus->audio_component = acomp;
 	devres_add(dev, acomp);
 
-	component_match_add(dev, &match, match_master, bus);
+	component_match_add_typed(dev, &match, match_master, bus);
 	ret = component_master_add_with_match(dev, &hdac_component_master_ops,
 					      match);
 	if (ret < 0)
diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c
index 617ff1aa818f..7aee090e3d27 100644
--- a/sound/hda/hdac_i915.c
+++ b/sound/hda/hdac_i915.c
@@ -82,9 +82,11 @@ void snd_hdac_i915_set_bclk(struct hdac_bus *bus)
 }
 EXPORT_SYMBOL_GPL(snd_hdac_i915_set_bclk);
 
-static int i915_component_master_match(struct device *dev, void *data)
+static int i915_component_master_match(struct device *dev, int subcomponent,
+				       void *data)
 {
-	return !strcmp(dev->driver->name, "i915");
+	return !strcmp(dev->driver->name, "i915") &&
+	       subcomponent == I915_COMPONENT_AUDIO;
 }
 
 /* check whether intel graphics is present */
-- 
2.20.1