From 23ee09032d44736c5e8c7becbe03170dbc6f2e8d Mon Sep 17 00:00:00 2001
From: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Date: Mon, 20 Jan 2020 18:01:15 +0200
Subject: [PATCH] ASoC: SOF: Intel: refactor i915_get/put functions
Git-commit: 23ee09032d44736c5e8c7becbe03170dbc6f2e8d
Patch-mainline: v5.6-rc1
References: jsc#SLE-16518

The current interface to control i915 display power is misleading.
The hda_codec_i915_get() and hda_codec_i915_put() names suggest
a refcounting based interface. This is confusing as no refcounting
is done and the underlying HDAC library interface does not support
refcounts eithers.

Clarify the code by replacing the functions with a single
hda_codec_i915_display_power() that is aligned with
snd_hdac_display_power().

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200120160117.29130-2-kai.vehmanen@linux.intel.com
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 sound/soc/sof/intel/hda-codec.c |   21 ++++++---------------
 sound/soc/sof/intel/hda.c       |    2 +-
 sound/soc/sof/intel/hda.h       |    7 +++----
 3 files changed, 10 insertions(+), 20 deletions(-)

--- a/sound/soc/sof/intel/hda-codec.c
+++ b/sound/soc/sof/intel/hda-codec.c
@@ -170,23 +170,14 @@ EXPORT_SYMBOL(hda_codec_probe_bus);
 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \
 	IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)
 
-void hda_codec_i915_get(struct snd_sof_dev *sdev)
+void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable)
 {
 	struct hdac_bus *bus = sof_to_bus(sdev);
 
-	dev_dbg(bus->dev, "Turning i915 HDAC power on\n");
-	snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);
+	dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable);
+	snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable);
 }
-EXPORT_SYMBOL(hda_codec_i915_get);
-
-void hda_codec_i915_put(struct snd_sof_dev *sdev)
-{
-	struct hdac_bus *bus = sof_to_bus(sdev);
-
-	dev_dbg(bus->dev, "Turning i915 HDAC power off\n");
-	snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);
-}
-EXPORT_SYMBOL(hda_codec_i915_put);
+EXPORT_SYMBOL(hda_codec_i915_display_power);
 
 int hda_codec_i915_init(struct snd_sof_dev *sdev)
 {
@@ -198,7 +189,7 @@ int hda_codec_i915_init(struct snd_sof_d
 	if (ret < 0)
 		return ret;
 
-	hda_codec_i915_get(sdev);
+	hda_codec_i915_display_power(sdev, true);
 
 	return 0;
 }
@@ -209,7 +200,7 @@ int hda_codec_i915_exit(struct snd_sof_d
 	struct hdac_bus *bus = sof_to_bus(sdev);
 	int ret;
 
-	hda_codec_i915_put(sdev);
+	hda_codec_i915_display_power(sdev, false);
 
 	ret = snd_hdac_i915_exit(bus);
 
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -380,7 +380,7 @@ static int hda_init_caps(struct snd_sof_
 	/* create codec instances */
 	hda_codec_probe_bus(sdev, hda_codec_use_common_hdmi);
 
-	hda_codec_i915_put(sdev);
+	hda_codec_i915_display_power(sdev, false);
 
 	/*
 	 * we are done probing so decrement link counts
--- a/sound/soc/sof/intel/hda.h
+++ b/sound/soc/sof/intel/hda.h
@@ -586,15 +586,14 @@ void hda_codec_jack_check(struct snd_sof
 	(IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \
 	 IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI))
 
-void hda_codec_i915_get(struct snd_sof_dev *sdev);
-void hda_codec_i915_put(struct snd_sof_dev *sdev);
+void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable);
 int hda_codec_i915_init(struct snd_sof_dev *sdev);
 int hda_codec_i915_exit(struct snd_sof_dev *sdev);
 
 #else
 
-static inline void hda_codec_i915_get(struct snd_sof_dev *sdev)  { }
-static inline void hda_codec_i915_put(struct snd_sof_dev *sdev)  { }
+static inline void hda_codec_i915_display_power(struct snd_sof_dev *sdev,
+						bool enable) { }
 static inline int hda_codec_i915_init(struct snd_sof_dev *sdev) { return 0; }
 static inline int hda_codec_i915_exit(struct snd_sof_dev *sdev) { return 0; }