Applied "ASoC: dapm: add support to pinctrl dapm" to the asoc tree

From: Mark Brown <broonie@kernel.org>
To: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Mark Brown <broonie@kernel.org>, Mark Brown <broonie@kernel.org>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Takashi Iwai <tiwai@suse.com>,
	alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
	alsa-devel@alsa-project.org
Subject: Applied "ASoC: dapm: add support to pinctrl dapm" to the asoc tree
Date: Tue, 13 Mar 2018 16:46:54 +0000 (GMT)	[thread overview]
Message-ID: <20180313164654.4F7FC440079@finisterre.ee.mobilebroadband> (raw)
In-Reply-To: <20180310023727.27077-1-srinivas.kandagatla@linaro.org>

The patch

   ASoC: dapm: add support to pinctrl dapm

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 5b2d15bbd1eeb3d787c8e6459a8cb2645f336050 Mon Sep 17 00:00:00 2001
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Date: Sat, 10 Mar 2018 02:37:27 +0000
Subject: [PATCH] ASoC: dapm: add support to pinctrl dapm

Purpose of having pinctrl dapm is to dynamically put the pins in
low power state when they are not actively used by the audio and
saving power.

Without this each driver has to set the pinctrl states, either
during probe or dynamically depending on the callbacks received
from ASoC core.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 include/sound/soc-dapm.h | 16 ++++++++++++++++
 sound/soc/soc-dapm.c     | 42 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 58 insertions(+)

diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index 344b96c206a3..a6ce2de4e20a 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -269,6 +269,13 @@ struct device;
 	.reg = SND_SOC_NOPM, .shift = wdelay, .event = dapm_regulator_event, \
 	.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD, \
 	.on_val = wflags}
+#define SND_SOC_DAPM_PINCTRL(wname, active, sleep) \
+{	.id = snd_soc_dapm_pinctrl, .name = wname, \
+	.priv = (&(struct snd_soc_dapm_pinctrl_priv) \
+		{ .active_state = active, .sleep_state = sleep,}), \
+	.reg = SND_SOC_NOPM, .event = dapm_pinctrl_event, \
+	.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD }
+
 
 
 /* dapm kcontrol types */
@@ -374,6 +381,8 @@ int dapm_regulator_event(struct snd_soc_dapm_widget *w,
 			 struct snd_kcontrol *kcontrol, int event);
 int dapm_clock_event(struct snd_soc_dapm_widget *w,
 			 struct snd_kcontrol *kcontrol, int event);
+int dapm_pinctrl_event(struct snd_soc_dapm_widget *w,
+			 struct snd_kcontrol *kcontrol, int event);
 
 /* dapm controls */
 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
@@ -500,6 +509,7 @@ enum snd_soc_dapm_type {
 	snd_soc_dapm_pre,			/* machine specific pre widget - exec first */
 	snd_soc_dapm_post,			/* machine specific post widget - exec last */
 	snd_soc_dapm_supply,		/* power/clock supply */
+	snd_soc_dapm_pinctrl,		/* pinctrl */
 	snd_soc_dapm_regulator_supply,	/* external regulator */
 	snd_soc_dapm_clock_supply,	/* external clock */
 	snd_soc_dapm_aif_in,		/* audio interface input */
@@ -581,6 +591,7 @@ struct snd_soc_dapm_widget {
 
 	void *priv;				/* widget specific data */
 	struct regulator *regulator;		/* attached regulator */
+	struct pinctrl *pinctrl;		/* attached pinctrl */
 	const struct snd_soc_pcm_stream *params; /* params for dai links */
 	unsigned int num_params; /* number of params for dai links */
 	unsigned int params_select; /* currently selected param for dai link */
@@ -683,6 +694,11 @@ struct snd_soc_dapm_stats {
 	int neighbour_checks;
 };
 
+struct snd_soc_dapm_pinctrl_priv {
+	const char *active_state;
+	const char *sleep_state;
+};
+
 /**
  * snd_soc_dapm_init_bias_level() - Initialize DAPM bias level
  * @dapm: The DAPM context to initialize
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 92894d9cac19..a5fb4d404c99 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -35,6 +35,7 @@
 #include <linux/debugfs.h>
 #include <linux/pm_runtime.h>
 #include <linux/regulator/consumer.h>
+#include <linux/pinctrl/consumer.h>
 #include <linux/clk.h>
 #include <linux/slab.h>
 #include <sound/core.h>
@@ -72,6 +73,7 @@ snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
 static int dapm_up_seq[] = {
 	[snd_soc_dapm_pre] = 0,
 	[snd_soc_dapm_regulator_supply] = 1,
+	[snd_soc_dapm_pinctrl] = 1,
 	[snd_soc_dapm_clock_supply] = 1,
 	[snd_soc_dapm_supply] = 2,
 	[snd_soc_dapm_micbias] = 3,
@@ -121,6 +123,7 @@ static int dapm_down_seq[] = {
 	[snd_soc_dapm_dai_link] = 11,
 	[snd_soc_dapm_supply] = 12,
 	[snd_soc_dapm_clock_supply] = 13,
+	[snd_soc_dapm_pinctrl] = 13,
 	[snd_soc_dapm_regulator_supply] = 13,
 	[snd_soc_dapm_post] = 14,
 };
@@ -1289,6 +1292,31 @@ int dapm_regulator_event(struct snd_soc_dapm_widget *w,
 }
 EXPORT_SYMBOL_GPL(dapm_regulator_event);
 
+/*
+ * Handler for pinctrl widget.
+ */
+int dapm_pinctrl_event(struct snd_soc_dapm_widget *w,
+		       struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_dapm_pinctrl_priv *priv = w->priv;
+	struct pinctrl *p = w->pinctrl;
+	struct pinctrl_state *s;
+
+	if (!p || !priv)
+		return -EIO;
+
+	if (SND_SOC_DAPM_EVENT_ON(event))
+		s = pinctrl_lookup_state(p, priv->active_state);
+	else
+		s = pinctrl_lookup_state(p, priv->sleep_state);
+
+	if (IS_ERR(s))
+		return PTR_ERR(s);
+
+	return pinctrl_select_state(p, s);
+}
+EXPORT_SYMBOL_GPL(dapm_pinctrl_event);
+
 /*
  * Handler for clock supply widget.
  */
@@ -1902,6 +1930,7 @@ static int dapm_power_widgets(struct snd_soc_card *card, int event)
 				break;
 			case snd_soc_dapm_supply:
 			case snd_soc_dapm_regulator_supply:
+			case snd_soc_dapm_pinctrl:
 			case snd_soc_dapm_clock_supply:
 			case snd_soc_dapm_micbias:
 				if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
@@ -2315,6 +2344,7 @@ static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
 		case snd_soc_dapm_mixer_named_ctl:
 		case snd_soc_dapm_supply:
 		case snd_soc_dapm_regulator_supply:
+		case snd_soc_dapm_pinctrl:
 		case snd_soc_dapm_clock_supply:
 			if (w->name)
 				count += sprintf(buf + count, "%s: %s\n",
@@ -3464,6 +3494,17 @@ snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
 					 w->name, ret);
 		}
 		break;
+	case snd_soc_dapm_pinctrl:
+		w->pinctrl = devm_pinctrl_get(dapm->dev);
+		if (IS_ERR_OR_NULL(w->pinctrl)) {
+			ret = PTR_ERR(w->pinctrl);
+			if (ret == -EPROBE_DEFER)
+				return ERR_PTR(ret);
+			dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
+				w->name, ret);
+			return NULL;
+		}
+		break;
 	case snd_soc_dapm_clock_supply:
 #ifdef CONFIG_CLKDEV_LOOKUP
 		w->clk = devm_clk_get(dapm->dev, w->name);
@@ -3543,6 +3584,7 @@ snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
 		break;
 	case snd_soc_dapm_supply:
 	case snd_soc_dapm_regulator_supply:
+	case snd_soc_dapm_pinctrl:
 	case snd_soc_dapm_clock_supply:
 	case snd_soc_dapm_kcontrol:
 		w->is_supply = 1;
-- 
2.16.2
