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From: =?UTF-8?q?Ond=C5=99ej=20Jirman?= <megi@xff.cz>
To: linux-kernel@vger.kernel.org,
	Liam Girdwood <lgirdwood@gmail.com>,
	Mark Brown <broonie@kernel.org>,
	Jaroslav Kysela <perex@perex.cz>,
	Takashi Iwai <tiwai@suse.com>
Cc: Samuel Holland <samuel@sholland.org>,
	Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Ondrej Jirman <megi@xff.cz>,
	Arnaud Ferraris <arnaud.ferraris@collabora.com>,
	linux-sound@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-sunxi@lists.linux.dev
Subject: [PATCH v3 1/4] ASoC: sun50i-codec-analog: Move suspend/resume to set_bias_level
Date: Sat,  2 Mar 2024 15:00:35 +0100
Message-ID: <20240302140042.1990256-2-megi@xff.cz>
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From: Samuel Holland <samuel@sholland.org>

With idle_bias_on and suspend_bias_off, there are bias level transitions
that match the suspend/resume callbacks. However, there are also
transitions during probe (OFF => STANDBY) and removal (STANDBY => OFF).

By using the set_bias_level hook, the driver can have one copy of code
that would otherwise be duplicated between the probe/resume and
suspend/remove hooks.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Ondřej Jirman <megi@xff.cz>
---
 sound/soc/sunxi/sun50i-codec-analog.c | 29 +++++++++++++++++----------
 1 file changed, 18 insertions(+), 11 deletions(-)

diff --git a/sound/soc/sunxi/sun50i-codec-analog.c b/sound/soc/sunxi/sun50i-codec-analog.c
index 8a32d05e23e1..cedd4de42d1a 100644
--- a/sound/soc/sunxi/sun50i-codec-analog.c
+++ b/sound/soc/sunxi/sun50i-codec-analog.c
@@ -471,17 +471,23 @@ static const struct snd_soc_dapm_route sun50i_a64_codec_routes[] = {
 	{ "EARPIECE", NULL, "Earpiece Amp" },
 };
 
-static int sun50i_a64_codec_suspend(struct snd_soc_component *component)
+static int sun50i_a64_codec_set_bias_level(struct snd_soc_component *component,
+					   enum snd_soc_bias_level level)
 {
-	return regmap_update_bits(component->regmap, SUN50I_ADDA_HP_CTRL,
-				  BIT(SUN50I_ADDA_HP_CTRL_PA_CLK_GATE),
-				  BIT(SUN50I_ADDA_HP_CTRL_PA_CLK_GATE));
-}
+	switch (level) {
+	case SND_SOC_BIAS_OFF:
+		regmap_set_bits(component->regmap, SUN50I_ADDA_HP_CTRL,
+				BIT(SUN50I_ADDA_HP_CTRL_PA_CLK_GATE));
+		break;
+	case SND_SOC_BIAS_STANDBY:
+		regmap_clear_bits(component->regmap, SUN50I_ADDA_HP_CTRL,
+				   BIT(SUN50I_ADDA_HP_CTRL_PA_CLK_GATE));
+		break;
+	default:
+		break;
+	}
 
-static int sun50i_a64_codec_resume(struct snd_soc_component *component)
-{
-	return regmap_update_bits(component->regmap, SUN50I_ADDA_HP_CTRL,
-				  BIT(SUN50I_ADDA_HP_CTRL_PA_CLK_GATE), 0);
+	return 0;
 }
 
 static const struct snd_soc_component_driver sun50i_codec_analog_cmpnt_drv = {
@@ -491,8 +497,9 @@ static const struct snd_soc_component_driver sun50i_codec_analog_cmpnt_drv = {
 	.num_dapm_widgets	= ARRAY_SIZE(sun50i_a64_codec_widgets),
 	.dapm_routes		= sun50i_a64_codec_routes,
 	.num_dapm_routes	= ARRAY_SIZE(sun50i_a64_codec_routes),
-	.suspend		= sun50i_a64_codec_suspend,
-	.resume			= sun50i_a64_codec_resume,
+	.set_bias_level		= sun50i_a64_codec_set_bias_level,
+	.idle_bias_on		= true,
+	.suspend_bias_off	= true,
 };
 
 static const struct of_device_id sun50i_codec_analog_of_match[] = {
-- 
2.44.0