Release 4.17 sound/soc/soc-dapm.c

Directory: sound/soc
/*
 * soc-dapm.c  --  ALSA SoC Dynamic Audio Power Management
 *
 * Copyright 2005 Wolfson Microelectronics PLC.
 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 *  Features:
 *    o Changes power status of internal codec blocks depending on the
 *      dynamic configuration of codec internal audio paths and active
 *      DACs/ADCs.
 *    o Platform power domain - can support external components i.e. amps and
 *      mic/headphone insertion events.
 *    o Automatic Mic Bias support
 *    o Jack insertion power event initiation - e.g. hp insertion will enable
 *      sinks, dacs, etc
 *    o Delayed power down of audio subsystem to reduce pops between a quick
 *      device reopen.
 *
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/async.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/bitops.h>
#include <linux/platform_device.h>
#include <linux/jiffies.h>
#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>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>

#include <trace/events/asoc.h>


#define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;


#define SND_SOC_DAPM_DIR_REVERSE(x) ((x == SND_SOC_DAPM_DIR_IN) ? \
        SND_SOC_DAPM_DIR_OUT : SND_SOC_DAPM_DIR_IN)


#define snd_soc_dapm_for_each_direction(dir) \
	for ((dir) = SND_SOC_DAPM_DIR_IN; (dir) <= SND_SOC_DAPM_DIR_OUT; \
                (dir)++)

static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
	struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
	const char *control,
	int (*connected)(struct snd_soc_dapm_widget *source,
			 struct snd_soc_dapm_widget *sink));

struct snd_soc_dapm_widget *
snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
			 const struct snd_soc_dapm_widget *widget);

struct snd_soc_dapm_widget *
snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
			 const struct snd_soc_dapm_widget *widget);

/* dapm power sequences - make this per codec in the future */

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,
	[snd_soc_dapm_dai_link] = 2,
	[snd_soc_dapm_dai_in] = 4,
	[snd_soc_dapm_dai_out] = 4,
	[snd_soc_dapm_aif_in] = 4,
	[snd_soc_dapm_aif_out] = 4,
	[snd_soc_dapm_mic] = 5,
	[snd_soc_dapm_mux] = 6,
	[snd_soc_dapm_demux] = 6,
	[snd_soc_dapm_dac] = 7,
	[snd_soc_dapm_switch] = 8,
	[snd_soc_dapm_mixer] = 8,
	[snd_soc_dapm_mixer_named_ctl] = 8,
	[snd_soc_dapm_pga] = 9,
	[snd_soc_dapm_adc] = 10,
	[snd_soc_dapm_out_drv] = 11,
	[snd_soc_dapm_hp] = 11,
	[snd_soc_dapm_spk] = 11,
	[snd_soc_dapm_line] = 11,
	[snd_soc_dapm_kcontrol] = 12,
	[snd_soc_dapm_post] = 13,
};


static int dapm_down_seq[] = {
	[snd_soc_dapm_pre] = 0,
	[snd_soc_dapm_kcontrol] = 1,
	[snd_soc_dapm_adc] = 2,
	[snd_soc_dapm_hp] = 3,
	[snd_soc_dapm_spk] = 3,
	[snd_soc_dapm_line] = 3,
	[snd_soc_dapm_out_drv] = 3,
	[snd_soc_dapm_pga] = 4,
	[snd_soc_dapm_switch] = 5,
	[snd_soc_dapm_mixer_named_ctl] = 5,
	[snd_soc_dapm_mixer] = 5,
	[snd_soc_dapm_dac] = 6,
	[snd_soc_dapm_mic] = 7,
	[snd_soc_dapm_micbias] = 8,
	[snd_soc_dapm_mux] = 9,
	[snd_soc_dapm_demux] = 9,
	[snd_soc_dapm_aif_in] = 10,
	[snd_soc_dapm_aif_out] = 10,
	[snd_soc_dapm_dai_in] = 10,
	[snd_soc_dapm_dai_out] = 10,
	[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,
};



static void dapm_assert_locked(struct snd_soc_dapm_context *dapm)
{
	if (dapm->card && dapm->card->instantiated)
		lockdep_assert_held(&dapm->card->dapm_mutex);
}

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Total 33 100.00% 1 100.00%



static void pop_wait(u32 pop_time)
{
	if (pop_time)
		schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
}

Contributors
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Mark Brown 19 90.48% 1 50.00%
Troy Kisky 2 9.52% 1 50.00%
Total 21 100.00% 2 100.00%



static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
{
	va_list args;
	char *buf;

	if (!pop_time)
		return;

	buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
	if (buf == NULL)
		return;

	va_start(args, fmt);
	vsnprintf(buf, PAGE_SIZE, fmt, args);
	dev_info(dev, "%s", buf);
	va_end(args);

	kfree(buf);
}

Contributors
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Jarkko Nikula 48 55.17% 1 25.00%
Mark Brown 34 39.08% 1 25.00%
Troy Kisky 3 3.45% 1 25.00%
Takashi Iwai 2 2.30% 1 25.00%
Total 87 100.00% 4 100.00%



static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
{
	return !list_empty(&w->dirty);
}

Contributors
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Mark Brown 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%



static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
{
	dapm_assert_locked(w->dapm);

	if (!dapm_dirty_widget(w)) {
		dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
			 w->name, reason);
		list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
	}
}

Contributors
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Mark Brown 67 100.00% 4 100.00%
Total 67 100.00% 4 100.00%

/*
 * Common implementation for dapm_widget_invalidate_input_paths() and
 * dapm_widget_invalidate_output_paths(). The function is inlined since the
 * combined size of the two specialized functions is only marginally larger then
 * the size of the generic function and at the same time the fast path of the
 * specialized functions is significantly smaller than the generic function.
 */


static __always_inline void dapm_widget_invalidate_paths(
	struct snd_soc_dapm_widget *w, enum snd_soc_dapm_direction dir)
{
	enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
	struct snd_soc_dapm_widget *node;
	struct snd_soc_dapm_path *p;
	LIST_HEAD(list);

	dapm_assert_locked(w->dapm);

	if (w->endpoints[dir] == -1)
		return;

	list_add_tail(&w->work_list, &list);
	w->endpoints[dir] = -1;

	list_for_each_entry(w, &list, work_list) {
		snd_soc_dapm_widget_for_each_path(w, dir, p) {
			if (p->is_supply || p->weak || !p->connect)
				continue;
			node = p->node[rdir];
			if (node->endpoints[dir] != -1) {
				node->endpoints[dir] = -1;
				list_add_tail(&node->work_list, &list);
			}
		}
	}
}

Contributors
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Lars-Peter Clausen 161 100.00% 3 100.00%
Total 161 100.00% 3 100.00%

/*
 * dapm_widget_invalidate_input_paths() - Invalidate the cached number of
 *  input paths
 * @w: The widget for which to invalidate the cached number of input paths
 *
 * Resets the cached number of inputs for the specified widget and all widgets
 * that can be reached via outcoming paths from the widget.
 *
 * This function must be called if the number of output paths for a widget might
 * have changed. E.g. if the source state of a widget changes or a path is added
 * or activated with the widget as the sink.
 */


static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w)
{
	dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_IN);
}

Contributors
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Lars-Peter Clausen 18 100.00% 2 100.00%
Total 18 100.00% 2 100.00%

/*
 * dapm_widget_invalidate_output_paths() - Invalidate the cached number of
 *  output paths
 * @w: The widget for which to invalidate the cached number of output paths
 *
 * Resets the cached number of outputs for the specified widget and all widgets
 * that can be reached via incoming paths from the widget.
 *
 * This function must be called if the number of output paths for a widget might
 * have changed. E.g. if the sink state of a widget changes or a path is added
 * or activated with the widget as the source.
 */


static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget *w)
{
	dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_OUT);
}

Contributors
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Lars-Peter Clausen 18 100.00% 2 100.00%
Total 18 100.00% 2 100.00%

/*
 * dapm_path_invalidate() - Invalidates the cached number of inputs and outputs
 *  for the widgets connected to a path
 * @p: The path to invalidate
 *
 * Resets the cached number of inputs for the sink of the path and the cached
 * number of outputs for the source of the path.
 *
 * This function must be called when a path is added, removed or the connected
 * state changes.
 */


static void dapm_path_invalidate(struct snd_soc_dapm_path *p)
{
	/*
         * Weak paths or supply paths do not influence the number of input or
         * output paths of their neighbors.
         */
	if (p->weak || p->is_supply)
		return;

	/*
         * The number of connected endpoints is the sum of the number of
         * connected endpoints of all neighbors. If a node with 0 connected
         * endpoints is either connected or disconnected that sum won't change,
         * so there is no need to re-check the path.
         */
	if (p->source->endpoints[SND_SOC_DAPM_DIR_IN] != 0)
		dapm_widget_invalidate_input_paths(p->sink);
	if (p->sink->endpoints[SND_SOC_DAPM_DIR_OUT] != 0)
		dapm_widget_invalidate_output_paths(p->source);
}

Contributors
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Lars-Peter Clausen 64 100.00% 2 100.00%
Total 64 100.00% 2 100.00%



void dapm_mark_endpoints_dirty(struct snd_soc_card *card)
{
	struct snd_soc_dapm_widget *w;

	mutex_lock(&card->dapm_mutex);

	list_for_each_entry(w, &card->widgets, list) {
		if (w->is_ep) {
			dapm_mark_dirty(w, "Rechecking endpoints");
			if (w->is_ep & SND_SOC_DAPM_EP_SINK)
				dapm_widget_invalidate_output_paths(w);
			if (w->is_ep & SND_SOC_DAPM_EP_SOURCE)
				dapm_widget_invalidate_input_paths(w);
		}
	}

	mutex_unlock(&card->dapm_mutex);
}
Contributors
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Mark Brown 48 58.54% 1 25.00%
Lars-Peter Clausen 34 41.46% 3 75.00%
Total 82 100.00% 4 100.00%

EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty);

/* create a new dapm widget */


static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
	const struct snd_soc_dapm_widget *_widget)
{
	return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
}

Contributors
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Richard Purdie 23 79.31% 1 50.00%
Takashi Iwai 6 20.69% 1 50.00%
Total 29 100.00% 2 100.00%


struct dapm_kcontrol_data {
	
unsigned int value;
	
struct snd_soc_dapm_widget *widget;
	
struct list_head paths;
	
struct snd_soc_dapm_widget_list *wlist;
};



static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
	struct snd_kcontrol *kcontrol, const char *ctrl_name)
{
	struct dapm_kcontrol_data *data;
	struct soc_mixer_control *mc;
	struct soc_enum *e;
	const char *name;
	int ret;

	data = kzalloc(sizeof(*data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	INIT_LIST_HEAD(&data->paths);

	switch (widget->id) {
	case snd_soc_dapm_switch:
	case snd_soc_dapm_mixer:
	case snd_soc_dapm_mixer_named_ctl:
		mc = (struct soc_mixer_control *)kcontrol->private_value;

		if (mc->autodisable && snd_soc_volsw_is_stereo(mc))
			dev_warn(widget->dapm->dev,
				 "ASoC: Unsupported stereo autodisable control '%s'\n",
				 ctrl_name);

		if (mc->autodisable) {
			struct snd_soc_dapm_widget template;

			name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
					 "Autodisable");
			if (!name) {
				ret = -ENOMEM;
				goto err_data;
			}

			memset(&template, 0, sizeof(template));
			template.reg = mc->reg;
			template.mask = (1 << fls(mc->max)) - 1;
			template.shift = mc->shift;
			if (mc->invert)
				template.off_val = mc->max;
			else
				template.off_val = 0;
			template.on_val = template.off_val;
			template.id = snd_soc_dapm_kcontrol;
			template.name = name;

			data->value = template.on_val;

			data->widget =
				snd_soc_dapm_new_control_unlocked(widget->dapm,
				&template);
			kfree(name);
			if (IS_ERR(data->widget)) {
				ret = PTR_ERR(data->widget);
				goto err_data;
			}
			if (!data->widget) {
				ret = -ENOMEM;
				goto err_data;
			}
		}
		break;
	case snd_soc_dapm_demux:
	case snd_soc_dapm_mux:
		e = (struct soc_enum *)kcontrol->private_value;

		if (e->autodisable) {
			struct snd_soc_dapm_widget template;

			name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
					 "Autodisable");
			if (!name) {
				ret = -ENOMEM;
				goto err_data;
			}

			memset(&template, 0, sizeof(template));
			template.reg = e->reg;
			template.mask = e->mask << e->shift_l;
			template.shift = e->shift_l;
			template.off_val = snd_soc_enum_item_to_val(e, 0);
			template.on_val = template.off_val;
			template.id = snd_soc_dapm_kcontrol;
			template.name = name;

			data->value = template.on_val;

			data->widget = snd_soc_dapm_new_control_unlocked(
						widget->dapm, &template);
			kfree(name);
			if (IS_ERR(data->widget)) {
				ret = PTR_ERR(data->widget);
				goto err_data;
			}
			if (!data->widget) {
				ret = -ENOMEM;
				goto err_data;
			}

			snd_soc_dapm_add_path(widget->dapm, data->widget,
					      widget, NULL, NULL);
		}
		break;
	default:
		break;
	}

	kcontrol->private_data = data;

	return 0;

err_data:
	kfree(data);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 263 47.30% 9 60.00%
Charles Keepax 222 39.93% 3 20.00%
Linus Walleij 46 8.27% 1 6.67%
Chen-Yu Tsai 24 4.32% 1 6.67%
Liam Girdwood 1 0.18% 1 6.67%
Total 556 100.00% 15 100.00%



static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
{
	struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
	kfree(data->wlist);
	kfree(data);
}

Contributors
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Lars-Peter Clausen 33 100.00% 2 100.00%
Total 33 100.00% 2 100.00%



static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
	const struct snd_kcontrol *kcontrol)
{
	struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);

	return data->wlist;
}

Contributors
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Lars-Peter Clausen 29 100.00% 2 100.00%
Total 29 100.00% 2 100.00%



static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
	struct snd_soc_dapm_widget *widget)
{
	struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
	struct snd_soc_dapm_widget_list *new_wlist;
	unsigned int n;

	if (data->wlist)
		n = data->wlist->num_widgets + 1;
	else
		n = 1;

	new_wlist = krealloc(data->wlist,
			sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL);
	if (!new_wlist)
		return -ENOMEM;

	new_wlist->widgets[n - 1] = widget;
	new_wlist->num_widgets = n;

	data->wlist = new_wlist;

	return 0;
}

Contributors
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Lars-Peter Clausen 115 100.00% 3 100.00%
Total 115 100.00% 3 100.00%



static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
	struct snd_soc_dapm_path *path)
{
	struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);

	list_add_tail(&path->list_kcontrol, &data->paths);
}

Contributors
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Lars-Peter Clausen 40 100.00% 2 100.00%
Total 40 100.00% 2 100.00%



static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
{
	struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);

	if (!data->widget)
		return true;

	return data->widget->power;
}

Contributors
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Lars-Peter Clausen 39 100.00% 2 100.00%
Total 39 100.00% 2 100.00%



static struct list_head *dapm_kcontrol_get_path_list(
	const struct snd_kcontrol *kcontrol)
{
	struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);

	return &data->paths;
}

Contributors
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Lars-Peter Clausen 30 100.00% 1 100.00%
Total 30 100.00% 1 100.00%


#define dapm_kcontrol_for_each_path(path, kcontrol) \
	list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
                list_kcontrol)



unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
{
	struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);

	return data->value;
}
Contributors
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Lars-Peter Clausen 27 100.00% 1 100.00%
Total 27 100.00% 1 100.00%

EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value);



static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
	unsigned int value)
{
	struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);

	if (data->value == value)
		return false;

	if (data->widget)
		data->widget->on_val = value;

	data->value = value;

	return true;
}

Contributors
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Lars-Peter Clausen 60 100.00% 2 100.00%
Total 60 100.00% 2 100.00%

/**
 * snd_soc_dapm_kcontrol_widget() - Returns the widget associated to a
 *   kcontrol
 * @kcontrol: The kcontrol
 */


struct snd_soc_dapm_widget *snd_soc_dapm_kcontrol_widget(
				struct snd_kcontrol *kcontrol)
{
	return dapm_kcontrol_get_wlist(kcontrol)->widgets[0];
}
Contributors
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Mythri P K 23 100.00% 1 100.00%
Total 23 100.00% 1 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_widget);

/**
 * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
 *  kcontrol
 * @kcontrol: The kcontrol
 *
 * Note: This function must only be used on kcontrols that are known to have
 * been registered for a CODEC. Otherwise the behaviour is undefined.
 */


struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm(
	struct snd_kcontrol *kcontrol)
{
	return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm;
}
Contributors
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Lars-Peter Clausen 25 100.00% 3 100.00%
Total 25 100.00% 3 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm);



static void dapm_reset(struct snd_soc_card *card)
{
	struct snd_soc_dapm_widget *w;

	lockdep_assert_held(&card->dapm_mutex);

	memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));

	list_for_each_entry(w, &card->widgets, list) {
		w->new_power = w->power;
		w->power_checked = false;
	}
}

Contributors
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Liam Girdwood 49 75.38% 1 33.33%
Lars-Peter Clausen 8 12.31% 1 33.33%
Mark Brown 8 12.31% 1 33.33%
Total 65 100.00% 3 100.00%



static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm)
{
	if (!dapm->component)
		return NULL;
	return dapm->component->name_prefix;
}

Contributors
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Lars-Peter Clausen 30 100.00% 1 100.00%
Total 30 100.00% 1 100.00%



static int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg,
	unsigned int *value)
{
	if (!dapm->component)
		return -EIO;
	return snd_soc_component_read(dapm->component, reg, value);
}

Contributors
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Liam Girdwood 22 52.38% 2 40.00%
Lars-Peter Clausen 14 33.33% 2 40.00%
Arun Shamanna Lakshmi 6 14.29% 1 20.00%
Total 42 100.00% 5 100.00%



static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm,
	int reg, unsigned int mask, unsigned int value)
{
	if (!dapm->component)
		return -EIO;
	return snd_soc_component_update_bits(dapm->component, reg,
					     mask, value);
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 26 55.32% 3 50.00%
Liam Girdwood 20 42.55% 2 33.33%
Mark Brown 1 2.13% 1 16.67%
Total 47 100.00% 6 100.00%



static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm,
	int reg, unsigned int mask, unsigned int value)
{
	if (!dapm->component)
		return -EIO;
	return snd_soc_component_test_bits(dapm->component, reg, mask, value);
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 40 85.11% 2 50.00%
Liam Girdwood 7 14.89% 2 50.00%
Total 47 100.00% 4 100.00%



static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
{
	if (dapm->component)
		snd_soc_component_async_complete(dapm->component);
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 21 87.50% 1 50.00%
Lars-Peter Clausen 3 12.50% 1 50.00%
Total 24 100.00% 2 100.00%


static struct snd_soc_dapm_widget *

dapm_wcache_lookup(struct snd_soc_dapm_wcache *wcache, const char *name)
{
	struct snd_soc_dapm_widget *w = wcache->widget;
	struct list_head *wlist;
	const int depth = 2;
	int i = 0;

	if (w) {
		wlist = &w->dapm->card->widgets;

		list_for_each_entry_from(w, wlist, list) {
			if (!strcmp(name, w->name))
				return w;

			if (++i == depth)
				break;
		}
	}

	return NULL;
}

Contributors
Person Tokens Prop Commits CommitProp
Charles Keepax 96 100.00% 1 100.00%
Total 96 100.00% 1 100.00%



static inline void dapm_wcache_update(struct snd_soc_dapm_wcache *wcache,
				      struct snd_soc_dapm_widget *w)
{
	wcache->widget = w;
}

Contributors
Person Tokens Prop Commits CommitProp
Charles Keepax 14 60.87% 1 25.00%
Lars-Peter Clausen 8 34.78% 2 50.00%
Liam Girdwood 1 4.35% 1 25.00%
Total 23 100.00% 4 100.00%

/**
 * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level
 * @dapm: The DAPM context for which to set the level
 * @level: The level to set
 *
 * Forces the DAPM bias level to a specific state. It will call the bias level
 * callback of DAPM context with the specified level. This will even happen if
 * the context is already at the same level. Furthermore it will not go through
 * the normal bias level sequencing, meaning any intermediate states between the
 * current and the target state will not be entered.
 *
 * Note that the change in bias level is only temporary and the next time
 * snd_soc_dapm_sync() is called the state will be set to the level as
 * determined by the DAPM core. The function is mainly intended to be used to
 * used during probe or resume from suspend to power up the device so
 * initialization can be done, before the DAPM core takes over.
 */


int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm,
	enum snd_soc_bias_level level)
{
	int ret = 0;

	if (dapm->set_bias_level)
		ret = dapm->set_bias_level(dapm, level);

	if (ret == 0)
		dapm->bias_level = level;

	return ret;
}
Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 34 66.67% 2 66.67%
Mark Brown 17 33.33% 1 33.33%
Total 51 100.00% 3 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level);

/**
 * snd_soc_dapm_set_bias_level - set the bias level for the system
 * @dapm: DAPM context
 * @level: level to configure
 *
 * Configure the bias (power) levels for the SoC audio device.
 *
 * Returns 0 for success else error.
 */


static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
				       enum snd_soc_bias_level level)
{
	struct snd_soc_card *card = dapm->card;
	int ret = 0;

	trace_snd_soc_bias_level_start(card, level);

	if (card && card->set_bias_level)
		ret = card->set_bias_level(card, dapm, level);
	if (ret != 0)
		goto out;

	if (!card || dapm != &card->dapm)
		ret = snd_soc_dapm_force_bias_level(dapm, level);

	if (ret != 0)
		goto out;

	if (card && card->set_bias_level_post)
		ret = card->set_bias_level_post(card, dapm, level);
out:
	trace_snd_soc_bias_level_done(card, level);

	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 113 87.60% 8 72.73%
Liam Girdwood 10 7.75% 2 18.18%
Lars-Peter Clausen 6 4.65% 1 9.09%
Total 129 100.00% 11 100.00%

/* connect mux widget to its interconnecting audio paths */


static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
	struct snd_soc_dapm_path *path, const char *control_name,
	struct snd_soc_dapm_widget *w)
{
	const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0];
	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
	unsigned int val, item;
	int i;

	if (e->reg != SND_SOC_NOPM) {
		soc_dapm_read(dapm, e->reg, &val);
		val = (val >> e->shift_l) & e->mask;
		item = snd_soc_enum_val_to_item(e, val);
	} else {
		/* since a virtual mux has no backing registers to
                 * decide which path to connect, it will try to match
                 * with the first enumeration.  This is to ensure
                 * that the default mux choice (the first) will be
                 * correctly powered up during initialization.
                 */
		item = 0;
	}

	for (i = 0; i < e->items; i++) {
		if (!(strcmp(control_name, e->texts[i]))) {
			path->name = e->texts[i];
			if (i == item)
				path->connect = 1;
			else
				path->connect = 0;
			return 0;
		}
	}

	return -ENODEV;
}

Contributors
Person Tokens Prop Commits CommitProp
Richard Purdie 96 50.79% 1 6.67%
Lars-Peter Clausen 65 34.39% 7 46.67%
Dimitris Papastamos 12 6.35% 1 6.67%
Jon Smirl 9 4.76% 2 13.33%
Arun Shamanna Lakshmi 3 1.59% 1 6.67%
Liam Girdwood 2 1.06% 1 6.67%
Benoît Thébaudeau 1 0.53% 1 6.67%
Takashi Iwai 1 0.53% 1 6.67%
Total 189 100.00% 15 100.00%

/* set up initial codec paths */


static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i,
				       int nth_path)
{
	struct soc_mixer_control *mc = (struct soc_mixer_control *)
		p->sink->kcontrol_news[i].private_value;
	unsigned int reg = mc->reg;
	unsigned int shift = mc->shift;
	unsigned int max = mc->max;
	unsigned int mask = (1 << fls(max)) - 1;
	unsigned int invert = mc->invert;
	unsigned int val;

	if (reg != SND_SOC_NOPM) {
		soc_dapm_read(p->sink->dapm, reg, &val);
		/*
                 * The nth_path argument allows this function to know
                 * which path of a kcontrol it is setting the initial
                 * status for. Ideally this would support any number
                 * of paths and channels. But since kcontrols only come
                 * in mono and stereo variants, we are limited to 2
                 * channels.
                 *
                 * The following code assumes for stereo controls the
                 * first path is the left channel, and all remaining
                 * paths are the right channel.
                 */
		if (snd_soc_volsw_is_stereo(mc) && nth_path > 0) {
			if (reg != mc->rreg)
				soc_dapm_read(p->sink->dapm, mc->rreg, &val);
			val = (val >> mc->rshift) & mask;
		} else {
			val = (val >> shift) & mask;
		}
		if (invert)
			val = max - val;
		p->connect = !!val;
	} else {
		p->connect = 0;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 98 48.76% 5 50.00%
Chen-Yu Tsai 56 27.86% 1 10.00%
Peter Ujfalusi 42 20.90% 1 10.00%
Arun Shamanna Lakshmi 3 1.49% 1 10.00%
Richard Purdie 1 0.50% 1 10.00%
Stephen Warren 1 0.50% 1 10.00%
Total 201 100.00% 10 100.00%

/* connect mixer widget to its interconnecting audio paths */


static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
	struct snd_soc_dapm_path *path, const char *control_name)
{
	int i, nth_path = 0;

	/* search for mixer kcontrol */
	for (i = 0; i < path->sink->num_kcontrols; i++) {
		if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) {
			path->name = path->sink->kcontrol_news[i].name;
			dapm_set_mixer_path_status(path, i, nth_path++);
			return 0;
		}
	}
	return -ENODEV;
}

Contributors
Person Tokens Prop Commits CommitProp
Richard Purdie 72 71.29% 1 14.29%
Lars-Peter Clausen 10 9.90% 2 28.57%
Peter Ujfalusi 8 7.92% 1 14.29%
Chen-Yu Tsai 7 6.93% 1 14.29%
Stephen Warren 2 1.98% 1 14.29%
Liam Girdwood 2 1.98% 1 14.29%
Total 101 100.00% 7 100.00%



static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
	struct snd_soc_dapm_widget *kcontrolw,
	const struct snd_kcontrol_new *kcontrol_new,
	struct snd_kcontrol **kcontrol)
{
	struct snd_soc_dapm_widget *w;
	int i;

	*kcontrol = NULL;

	list_for_each_entry(w, &dapm->card->widgets, list) {
		if (w == kcontrolw || w->dapm != kcontrolw->dapm)
			continue;
		for (i = 0; i < w->num_kcontrols; i++) {
			if (&w->kcontrol_news[i] == kcontrol_new) {
				if (w->kcontrols)
					*kcontrol = w->kcontrols[i];
				return 1;
			}
		}
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Stephen Warren 71 59.66% 3 50.00%
Peter Ujfalusi 32 26.89% 1 16.67%
Richard Purdie 14 11.76% 1 16.67%
Liam Girdwood 2 1.68% 1 16.67%
Total 119 100.00% 6 100.00%

/*
 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
 * create it. Either way, add the widget into the control's widget list
 */


static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget *w,
	int kci)
{
	struct snd_soc_dapm_context *dapm = w->dapm;
	struct snd_card *card = dapm->card->snd_card;
	const char *prefix;
	size_t prefix_len;
	int shared;
	struct snd_kcontrol *kcontrol;
	bool wname_in_long_name, kcname_in_long_name;
	char *long_name = NULL;
	const char *name;
	int ret = 0;

	prefix = soc_dapm_prefix(dapm);
	if (prefix)
		prefix_len = strlen(prefix) + 1;
	else
		prefix_len = 0;

	shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
					 &kcontrol);

	if (!kcontrol) {
		if (shared) {
			wname_in_long_name = false;
			kcname_in_long_name = true;
		} else {
			switch (w->id) {
			case snd_soc_dapm_switch:
			case snd_soc_dapm_mixer:
			case snd_soc_dapm_pga:
			case snd_soc_dapm_out_drv:
				wname_in_long_name = true;
				kcname_in_long_name = true;
				break;
			case snd_soc_dapm_mixer_named_ctl:
				wname_in_long_name = false;
				kcname_in_long_name = true;
				break;
			case snd_soc_dapm_demux:
			case snd_soc_dapm_mux:
				wname_in_long_name = true;
				kcname_in_long_name = false;
				break;
			default:
				return -EINVAL;
			}
		}

		if (wname_in_long_name && kcname_in_long_name) {
			/*
                         * The control will get a prefix from the control
                         * creation process but we're also using the same
                         * prefix for widgets so cut the prefix off the
                         * front of the widget name.
                         */
			long_name = kasprintf(GFP_KERNEL, "%s %s",
				 w->name + prefix_len,
				 w->kcontrol_news[kci].name);
			if (long_name == NULL)
				return -ENOMEM;

			name = long_name;
		} else if (wname_in_long_name) {
			long_name = NULL;
			name = w->name + prefix_len;
		} else {
			long_name = NULL;
			name = w->kcontrol_news[kci].name;
		}

		kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
					prefix);
		if (!kcontrol) {
			ret = -ENOMEM;
			goto exit_free;
		}

		kcontrol->private_free = dapm_kcontrol_free;

		ret = dapm_kcontrol_data_alloc(w, kcontrol, name);
		if (ret) {
			snd_ctl_free_one(kcontrol);
			goto exit_free;
		}

		ret = snd_ctl_add(card, kcontrol);
		if (ret < 0) {
			dev_err(dapm->dev,
				"ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
				w->name, name, ret);
			goto exit_free;
		}
	}

	ret = dapm_kcontrol_add_widget(kcontrol, w);
	if (ret == 0)
		w->kcontrols[kci] = kcontrol;

exit_free:
	kfree(long_name);

	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
Stephen Warren 177 42.04% 4 16.00%
Lars-Peter Clausen 73 17.34% 9 36.00%
Richard Purdie 63 14.96% 1 4.00%
Mark Brown 40 9.50% 4 16.00%
Daniel Mack 28 6.65% 1 4.00%
Liam Girdwood 15 3.56% 2 8.00%
Ian Molton 13 3.09% 1 4.00%
Jarkko Nikula 5 1.19% 1 4.00%
Jeeja KP 4 0.95% 1 4.00%
Chen-Yu Tsai 3 0.71% 1 4.00%
Total 421 100.00% 25 100.00%

/* create new dapm mixer control */


static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
{
	int i, ret;
	struct snd_soc_dapm_path *path;
	struct dapm_kcontrol_data *data;

	/* add kcontrol */
	for (i = 0; i < w->num_kcontrols; i++) {
		/* match name */
		snd_soc_dapm_widget_for_each_source_path(w, path) {
			/* mixer/mux paths name must match control name */
			if (path->name != (char *)w->kcontrol_news[i].name)
				continue;

			if (!w->kcontrols[i]) {
				ret = dapm_create_or_share_kcontrol(w, i);
				if (ret < 0)
					return ret;
			}

			dapm_kcontrol_add_path(w->kcontrols[i], path);

			data = snd_kcontrol_chip(w->kcontrols[i]);
			if (data->widget)
				snd_soc_dapm_add_path(data->widget->dapm,
						      data->widget,
						      path->source,
						      NULL, NULL);
		}
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Stephen Warren 71 44.94% 3 33.33%
Charles Keepax 46 29.11% 1 11.11%
Richard Purdie 23 14.56% 1 11.11%
Mark Brown 12 7.59% 1 11.11%
Lars-Peter Clausen 5 3.16% 2 22.22%
Jeeja KP 1 0.63% 1 11.11%
Total 158 100.00% 9 100.00%

/* create new dapm mux control */


static int dapm_new_mux(struct snd_soc_dapm_widget *w)
{
	struct snd_soc_dapm_context *dapm = w->dapm;
	enum snd_soc_dapm_direction dir;
	struct snd_soc_dapm_path *path;
	const char *type;
	int ret;

	switch (w->id) {
	case snd_soc_dapm_mux:
		dir = SND_SOC_DAPM_DIR_OUT;
		type = "mux";
		break;
	case snd_soc_dapm_demux:
		dir = SND_SOC_DAPM_DIR_IN;
		type = "demux";
		break;
	default:
		return -EINVAL;
	}

	if (w->num_kcontrols != 1) {
		dev_err(dapm->dev,
			"ASoC: %s %s has incorrect number of controls\n", type,
			w->name);
		return -EINVAL;
	}

	if (list_empty(&w->edges[dir])) {
		dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name);
		return -EINVAL;
	}

	ret = dapm_create_or_share_kcontrol(w, 0);
	if (ret < 0)
		return ret;

	snd_soc_dapm_widget_for_each_path(w, dir, path) {
		if (path->name)
			dapm_kcontrol_add_path(w->kcontrols[0], path);
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Stephen Warren 84 45.16% 4 28.57%
Lars-Peter Clausen 80 43.01% 6 42.86%
Richard Purdie 17 9.14% 1 7.14%
Mark Brown 4 2.15% 2 14.29%
Jeeja KP 1 0.54% 1 7.14%
Total 186 100.00% 14 100.00%

/* create new dapm volume control */


static int dapm_new_pga(struct snd_soc_dapm_widget *w)
{
	int i, ret;

	for (i = 0; i < w->num_kcontrols; i++) {
		ret = dapm_create_or_share_kcontrol(w, i);
		if (ret < 0)
			return ret;
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Jeeja KP 32 59.26% 1 33.33%
Richard Purdie 20 37.04% 1 33.33%
Jarkko Nikula 2 3.70% 1 33.33%
Total 54 100.00% 3 100.00%

/* create new dapm dai link control */


static int dapm_new_dai_link(struct snd_soc_dapm_widget *w)
{
	int i, ret;
	struct snd_kcontrol *kcontrol;
	struct snd_soc_dapm_context *dapm = w->dapm;
	struct snd_card *card = dapm->card->snd_card;

	/* create control for links with > 1 config */
	if (w->num_params <= 1)
		return 0;

	/* add kcontrol */
	for (i = 0; i < w->num_kcontrols; i++) {
		kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w,
					w->name, NULL);
		ret = snd_ctl_add(card, kcontrol);
		if (ret < 0) {
			dev_err(dapm->dev,
				"ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
				w->name, w->kcontrol_news[i].name, ret);
			return ret;
		}
		kcontrol->private_data = w;
		w->kcontrols[i] = kcontrol;
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Nikesh Oswal 154 100.00% 1 100.00%
Total 154 100.00% 1 100.00%

/* We implement power down on suspend by checking the power state of
 * the ALSA card - when we are suspending the ALSA state for the card
 * is set to D3.
 */


static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
{
	int level = snd_power_get_state(widget->dapm->card->snd_card);

	switch (level) {
	case SNDRV_CTL_POWER_D3hot:
	case SNDRV_CTL_POWER_D3cold:
		if (widget->ignore_suspend)
			dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
				widget->name);
		return widget->ignore_suspend;
	default:
		return 1;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 36 53.73% 2 28.57%
Liam Girdwood 13 19.40% 3 42.86%
Richard Purdie 11 16.42% 1 14.29%
Jarkko Nikula 7 10.45% 1 14.29%
Total 67 100.00% 7 100.00%



static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list,
	struct list_head *widgets)
{
	struct snd_soc_dapm_widget *w;
	struct list_head *it;
	unsigned int size = 0;
	unsigned int i = 0;

	list_for_each(it, widgets)
		size++;

	*list = kzalloc(sizeof(**list) + size * sizeof(*w), GFP_KERNEL);
	if (*list == NULL)
		return -ENOMEM;

	list_for_each_entry(w, widgets, work_list)
		(*list)->widgets[i++] = w;

	(*list)->num_widgets = i;

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Liam Girdwood 58 50.43% 1 20.00%
Lars-Peter Clausen 45 39.13% 1 20.00%
Mark Brown 6 5.22% 2 40.00%
Richard Purdie 6 5.22% 1 20.00%
Total 115 100.00% 5 100.00%

/*
 * Common implementation for is_connected_output_ep() and
 * is_connected_input_ep(). The function is inlined since the combined size of
 * the two specialized functions is only marginally larger then the size of the
 * generic function and at the same time the fast path of the specialized
 * functions is significantly smaller than the generic function.
 */


static __always_inline int is_connected_ep(struct snd_soc_dapm_widget *widget,
	struct list_head *list, enum snd_soc_dapm_direction dir,
	int (*fn)(struct snd_soc_dapm_widget *, struct list_head *,
		  bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
						enum snd_soc_dapm_direction)),
	bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
				      enum snd_soc_dapm_direction))
{
	enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
	struct snd_soc_dapm_path *path;
	int con = 0;

	if (widget->endpoints[dir] >= 0)
		return widget->endpoints[dir];

	DAPM_UPDATE_STAT(widget, path_checks);

	/* do we need to add this widget to the list ? */
	if (list)
		list_add_tail(&widget->work_list, list);

	if (custom_stop_condition && custom_stop_condition(widget, dir)) {
		widget->endpoints[dir] = 1;
		return widget->endpoints[dir];
	}

	if ((widget->is_ep & SND_SOC_DAPM_DIR_TO_EP(dir)) && widget->connected) {
		widget->endpoints[dir] = snd_soc_dapm_suspend_check(widget);
		return widget->endpoints[dir];
	}

	snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
		DAPM_UPDATE_STAT(widget, neighbour_checks);

		if (path->weak || path->is_supply)
			continue;

		if (path->walking)
			return 1;

		trace_snd_soc_dapm_path(widget, dir, path);

		if (path->connect) {
			path->walking = 1;
			con += fn(path->node[dir], list, custom_stop_condition);
			path->walking = 0;
		}
	}

	widget->endpoints[dir] = con;

	return con;
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 91 31.71% 5 31.25%
Mark Brown 69 24.04% 6 37.50%
Richard Purdie 54 18.82% 1 6.25%
Piotr Stankiewicz 43 14.98% 1 6.25%
Jeeja KP 17 5.92% 1 6.25%
Liam Girdwood 12 4.18% 1 6.25%
Peter Ujfalusi 1 0.35% 1 6.25%
Total 287 100.00% 16 100.00%

/*
 * Recursively check for a completed path to an active or physically connected
 * output widget. Returns number of complete paths.
 *
 * Optionally, can be supplied with a function acting as a stopping condition.
 * This function takes the dapm widget currently being examined and the walk
 * direction as an arguments, it should return true if the walk should be
 * stopped and false otherwise.
 */


static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
	struct list_head *list,
	bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
				      enum snd_soc_dapm_direction))
{
	return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_OUT,
			is_connected_output_ep, custom_stop_condition);
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 28 62.22% 1 50.00%
Piotr Stankiewicz 17 37.78% 1 50.00%
Total 45 100.00% 2 100.00%

/*
 * Recursively check for a completed path to an active or physically connected
 * input widget. Returns number of complete paths.
 *
 * Optionally, can be supplied with a function acting as a stopping condition.
 * This function takes the dapm widget currently being examined and the walk
 * direction as an arguments, it should return true if the walk should be
 * stopped and false otherwise.
 */


static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
	struct list_head *list,
	bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
				      enum snd_soc_dapm_direction))
{
	return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_IN,
			is_connected_input_ep, custom_stop_condition);
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 28 62.22% 1 50.00%
Piotr Stankiewicz 17 37.78% 1 50.00%
Total 45 100.00% 2 100.00%

/**
 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
 * @dai: the soc DAI.
 * @stream: stream direction.
 * @list: list of active widgets for this stream.
 * @custom_stop_condition: (optional) a function meant to stop the widget graph
 *                         walk based on custom logic.
 *
 * Queries DAPM graph as to whether a valid audio stream path exists for
 * the initial stream specified by name. This takes into account
 * current mixer and mux kcontrol settings. Creates list of valid widgets.
 *
 * Optionally, can be supplied with a function acting as a stopping condition.
 * This function takes the dapm widget currently being examined and the walk
 * direction as an arguments, it should return true if the walk should be
 * stopped and false otherwise.
 *
 * Returns the number of valid paths or negative error.
 */


int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
	struct snd_soc_dapm_widget_list **list,
	bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
				      enum snd_soc_dapm_direction))
{
	struct snd_soc_card *card = dai->component->card;
	struct snd_soc_dapm_widget *w;
	LIST_HEAD(widgets);
	int paths;
	int ret;

	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);

	/*
         * For is_connected_{output,input}_ep fully discover the graph we need
         * to reset the cached number of inputs and outputs.
         */
	list_for_each_entry(w, &card->widgets, list) {
		w->endpoints[SND_SOC_DAPM_DIR_IN] = -1;
		w->endpoints[SND_SOC_DAPM_DIR_OUT] = -1;
	}

	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
		paths = is_connected_output_ep(dai->playback_widget, &widgets,
				custom_stop_condition);
	else
		paths = is_connected_input_ep(dai->capture_widget, &widgets,
				custom_stop_condition);

	/* Drop starting point */
	list_del(widgets.next);

	ret = dapm_widget_list_create(list, &widgets);
	if (ret)
		paths = ret;

	trace_snd_soc_dapm_connected(paths, stream);
	mutex_unlock(&card->dapm_mutex);

	return paths;
}

Contributors
Person Tokens Prop Commits CommitProp
Liam Girdwood 85 47.22% 2 22.22%
Lars-Peter Clausen 72 40.00% 5 55.56%
Piotr Stankiewicz 18 10.00% 1 11.11%
Ryo Tsutsui 5 2.78% 1 11.11%
Total 180 100.00% 9 100.00%

/*
 * Handler for regulator supply widget.
 */


int dapm_regulator_event(struct snd_soc_dapm_widget *w,
		   struct snd_kcontrol *kcontrol, int event)
{
	int ret;

	soc_dapm_async_complete(w->dapm);

	if (SND_SOC_DAPM_EVENT_ON(event)) {
		if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
			ret = regulator_allow_bypass(w->regulator, false);
			if (ret != 0)
				dev_warn(w->dapm->dev,
					 "ASoC: Failed to unbypass %s: %d\n",
					 w->name, ret);
		}

		return regulator_enable(w->regulator);
	} else {
		if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
			ret = regulator_allow_bypass(w->regulator, true);
			if (ret != 0)
				dev_warn(w->dapm->dev,
					 "ASoC: Failed to bypass %s: %d\n",
					 w->name, ret);
		}

		return regulator_disable_deferred(w->regulator, w->shift);
	}
}
Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 142 95.95% 4 57.14%
Charles Keepax 2 1.35% 1 14.29%
Lars-Peter Clausen 2 1.35% 1 14.29%
Liam Girdwood 2 1.35% 1 14.29%
Total 148 100.00% 7 100.00%

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);
}
Contributors
Person Tokens Prop Commits CommitProp
Srinivas Kandagatla 104 100.00% 1 100.00%
Total 104 100.00% 1 100.00%

EXPORT_SYMBOL_GPL(dapm_pinctrl_event);

/*
 * Handler for clock supply widget.
 */


int dapm_clock_event(struct snd_soc_dapm_widget *w,
		   struct snd_kcontrol *kcontrol, int event)
{
	if (!w->clk)
		return -EIO;

	soc_dapm_async_complete(w->dapm);

#ifdef CONFIG_HAVE_CLK
	if (SND_SOC_DAPM_EVENT_ON(event)) {
		return clk_prepare_enable(w->clk);
	} else {
		clk_disable_unprepare(w->clk);
		return 0;
	}
#endif
	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
Ola Lilja 57 77.03% 1 20.00%
Mark Brown 12 16.22% 2 40.00%
Marek Belisko 3 4.05% 1 20.00%
Fabio Baltieri 2 2.70% 1 20.00%
Total 74 100.00% 5 100.00%

EXPORT_SYMBOL_GPL(dapm_clock_event);



static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
{
	if (w->power_checked)
		return w->new_power;

	if (w->force)
		w->new_power = 1;
	else
		w->new_power = w->power_check(w);

	w->power_checked = true;

	return w->new_power;
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 57 100.00% 2 100.00%
Total 57 100.00% 2 100.00%

/* Generic check to see if a widget should be powered. */


static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
{
	int in, out;

	DAPM_UPDATE_STAT(w, power_checks);

	in = is_connected_input_ep(w, NULL, NULL);
	out = is_connected_output_ep(w, NULL, NULL);
	return out != 0 && in != 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 46 85.19% 2 50.00%
Piotr Stankiewicz 4 7.41% 1 25.00%
Liam Girdwood 4 7.41% 1 25.00%
Total 54 100.00% 4 100.00%

/* Check to see if a power supply is needed */


static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
{
	struct snd_soc_dapm_path *path;

	DAPM_UPDATE_STAT(w, power_checks);

	/* Check if one of our outputs is connected */
	snd_soc_dapm_widget_for_each_sink_path(w, path) {
		DAPM_UPDATE_STAT(w, neighbour_checks);

		if (path->weak)
			continue;

		if (path->connected &&
		    !path->connected(path->source, path->sink))
			continue;

		if (dapm_widget_power_check(path->sink))
			return 1;
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 79 96.34% 7 87.50%
Lars-Peter Clausen 3 3.66% 1 12.50%
Total 82 100.00% 8 100.00%



static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
{
	return w->connected;
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 13 81.25% 1 50.00%
Charles Keepax 3 18.75% 1 50.00%
Total 16 100.00% 2 100.00%



static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
			    struct snd_soc_dapm_widget *b,
			    bool power_up)
{
	int *sort;

	if (power_up)
		sort = dapm_up_seq;
	else
		sort = dapm_down_seq;

	if (sort[a->id] != sort[b->id])
		return sort[a->id] - sort[b->id];
	if (a->subseq != b->subseq) {
		if (power_up)
			return a->subseq - b->subseq;
		else
			return b->subseq - a->subseq;
	}
	if (a->reg != b->reg)
		return a->reg - b->reg;
	if (a->dapm != b->dapm)
		return (unsigned long)a->dapm - (unsigned long)b->dapm;

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 147 97.35% 9 90.00%
Richard Purdie 4 2.65% 1 10.00%
Total 151 100.00% 10 100.00%

/* Insert a widget in order into a DAPM power sequence. */


static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
			    struct list_head *list,
			    bool power_up)
{
	struct snd_soc_dapm_widget *w;

	list_for_each_entry(w, list, power_list)
		if (dapm_seq_compare(new_widget, w, power_up) < 0) {
			list_add_tail(&new_widget->power_list, &w->power_list);
			return;
		}

	list_add_tail(&new_widget->power_list, list);
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 52 73.24% 3 60.00%
Richard Purdie 17 23.94% 1 20.00%
Liam Girdwood 2 2.82% 1 20.00%
Total 71 100.00% 5 100.00%



static void dapm_seq_check_event(struct snd_soc_card *card,
				 struct snd_soc_dapm_widget *w, int event)
{
	const char *ev_name;
	int power, ret;

	switch (event) {
	case SND_SOC_DAPM_PRE_PMU:
		ev_name = "PRE_PMU";
		power = 1;
		break;
	case SND_SOC_DAPM_POST_PMU:
		ev_name = "POST_PMU";
		power = 1;
		break;
	case SND_SOC_DAPM_PRE_PMD:
		ev_name = "PRE_PMD";
		power = 0;
		break;
	case SND_SOC_DAPM_POST_PMD:
		ev_name = "POST_PMD";
		power = 0;
		break;
	case SND_SOC_DAPM_WILL_PMU:
		ev_name = "WILL_PMU";
		power = 1;
		break;
	case SND_SOC_DAPM_WILL_PMD:
		ev_name = "WILL_PMD";
		power = 0;
		break;
	default:
		WARN(1, "Unknown event %d\n", event);
		return;
	}

	if (w->new_power != power)
		return;

	if (w->event && (w->event_flags & event)) {
		pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
			w->name, ev_name);
		soc_dapm_async_complete(w->dapm);
		trace_snd_soc_dapm_widget_event_start(w, event);
		ret = w->event(w, NULL, event);
		trace_snd_soc_dapm_widget_event_done(w, event);
		if (ret < 0)
			dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
			       ev_name, w->name, ret);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 202 90.58% 4 50.00%
Takashi Iwai 8 3.59% 1 12.50%
Lars-Peter Clausen 7 3.14% 2 25.00%
Liam Girdwood 6 2.69% 1 12.50%
Total 223 100.00% 8 100.00%

/* Apply the coalesced changes from a DAPM sequence */


static void dapm_seq_run_coalesced(struct snd_soc_card *card,
				   struct list_head *pending)
{
	struct snd_soc_dapm_context *dapm;
	struct snd_soc_dapm_widget *w;
	int reg;
	unsigned int value = 0;
	unsigned int mask = 0;

	w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list);
	reg = w->reg;
	dapm = w->dapm;

	list_for_each_entry(w, pending, power_list) {
		WARN_ON(reg != w->reg || dapm != w->dapm);
		w->power = w->new_power;

		mask |= w->mask << w->shift;
		if (w->power)
			value |= w->on_val << w->shift;
		else
			value |= w->off_val << w->shift;

		pop_dbg(dapm->dev, card->pop_time,
			"pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
			w->name, reg, value, mask);

		/* Check for events */
		dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
		dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
	}

	if (reg >= 0) {
		/* Any widget will do, they should all be updating the
                 * same register.
                 */

		pop_dbg(dapm->dev, card->pop_time,
			"pop test : Applying 0x%x/0x%x to %x in %dms\n",
			value, mask, reg, card->pop_time);
		pop_wait(card->pop_time);
		soc_dapm_update_bits(dapm, reg, mask, value);
	}

	list_for_each_entry(w, pending, power_list) {
		dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
		dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 180 70.59% 4 36.36%
Lars-Peter Clausen 62 24.31% 4 36.36%
Jarkko Nikula 12 4.71% 2 18.18%
Takashi Iwai 1 0.39% 1 9.09%
Total 255 100.00% 11 100.00%

/* Apply a DAPM power sequence.
 *
 * We walk over a pre-sorted list of widgets to apply power to.  In
 * order to minimise the number of writes to the device required
 * multiple widgets will be updated in a single write where possible.
 * Currently anything that requires more than a single write is not
 * handled.
 */


static void dapm_seq_run(struct snd_soc_card *card,
	struct list_head *list, int event, bool power_up)
{
	struct snd_soc_dapm_widget *w, *n;
	struct snd_soc_dapm_context *d;
	LIST_HEAD(pending);
	int cur_sort = -1;
	int cur_subseq = -1;
	int cur_reg = SND_SOC_NOPM;
	struct snd_soc_dapm_context *cur_dapm = NULL;
	int ret, i;
	int *sort;

	if (power_up)
		sort = dapm_up_seq;
	else
		sort = dapm_down_seq;

	list_for_each_entry_safe(w, n, list, power_list) {
		ret = 0;

		/* Do we need to apply any queued changes? */
		if (sort[w->id] != cur_sort || w->reg != cur_reg ||
		    w->dapm != cur_dapm || w->subseq != cur_subseq) {
			if (!list_empty(&pending))
				dapm_seq_run_coalesced(card, &pending);

			if (cur_dapm && cur_dapm->seq_notifier) {
				for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
					if (sort[i] == cur_sort)
						cur_dapm->seq_notifier(cur_dapm,
								       i,
								       cur_subseq);
			}

			if (cur_dapm && w->dapm != cur_dapm)
				soc_dapm_async_complete(cur_dapm);

			INIT_LIST_HEAD(&pending);
			cur_sort = -1;
			cur_subseq = INT_MIN;
			cur_reg = SND_SOC_NOPM;
			cur_dapm = NULL;
		}

		switch (w->id) {
		case snd_soc_dapm_pre:
			if (!w->event)
				list_for_each_entry_safe_continue(w, n, list,
								  power_list);

			if (event == SND_SOC_DAPM_STREAM_START)
				ret = w->event(w,
					       NULL, SND_SOC_DAPM_PRE_PMU);
			else if (event == SND_SOC_DAPM_STREAM_STOP)
				ret = w->event(w,
					       NULL, SND_SOC_DAPM_PRE_PMD);
			break;

		case snd_soc_dapm_post:
			if (!w->event)
				list_for_each_entry_safe_continue(w, n, list,
								  power_list);

			if (event == SND_SOC_DAPM_STREAM_START)
				ret = w->event(w,
					       NULL, SND_SOC_DAPM_POST_PMU);
			else if (event == SND_SOC_DAPM_STREAM_STOP)
				ret = w->event(w,
					       NULL, SND_SOC_DAPM_POST_PMD);
			break;

		default:
			/* Queue it up for application */
			cur_sort = sort[w->id];
			cur_subseq = w->subseq;
			cur_reg = w->reg;
			cur_dapm = w->dapm;
			list_move(&w->power_list, &pending);
			break;
		}

		if (ret < 0)
			dev_err(w->dapm->dev,
				"ASoC: Failed to apply widget power: %d\n", ret);
	}

	if (!list_empty(&pending))
		dapm_seq_run_coalesced(card, &pending);

	if (cur_dapm && cur_dapm->seq_notifier) {
		for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
			if (sort[i] == cur_sort)
				cur_dapm->seq_notifier(cur_dapm,
						       i, cur_subseq);
	}

	list_for_each_entry(d, &card->dapm_list, list) {
		soc_dapm_async_complete(d);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 353 70.18% 13 68.42%
Richard Purdie 106 21.07% 1 5.26%
Jarkko Nikula 30 5.96% 2 10.53%
Liam Girdwood 10 1.99% 2 10.53%
Lars-Peter Clausen 4 0.80% 1 5.26%
Total 503 100.00% 19 100.00%



static void dapm_widget_update(struct snd_soc_card *card)
{
	struct snd_soc_dapm_update *update = card->update;
	struct snd_soc_dapm_widget_list *wlist;
	struct snd_soc_dapm_widget *w = NULL;
	unsigned int wi;
	int ret;

	if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
		return;

	wlist = dapm_kcontrol_get_wlist(update->kcontrol);

	for (wi = 0; wi < wlist->num_widgets; wi++) {
		w = wlist->widgets[wi];

		if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
			ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
			if (ret != 0)
				dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
					   w->name, ret);
		}
	}

	if (!w)
		return;

	ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask,
		update->val);
	if (ret < 0)
		dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
			w->name, ret);

	if (update->has_second_set) {
		ret = soc_dapm_update_bits(w->dapm, update->reg2,
					   update->mask2, update->val2);
		if (ret < 0)
			dev_err(w->dapm->dev,
				"ASoC: %s DAPM update failed: %d\n",
				w->name, ret);
	}

	for (wi = 0; wi < wlist->num_widgets; wi++) {
		w = wlist->widgets[wi];

		if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
			ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
			if (ret != 0)
				dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
					   w->name, ret);
		}
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 159 49.07% 1 11.11%
Lars-Peter Clausen 95 29.32% 6 66.67%
Chen-Yu Tsai 52 16.05% 1 11.11%
Liam Girdwood 18 5.56% 1 11.11%
Total 324 100.00% 9 100.00%

/* Async callback run prior to DAPM sequences - brings to _PREPARE if
 * they're changing state.
 */


static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
{
	struct snd_soc_dapm_context *d = data;
	int ret;

	/* If we're off and we're not supposed to go into STANDBY */
	if (d->bias_level == SND_SOC_BIAS_OFF &&
	    d->target_bias_level != SND_SOC_BIAS_OFF) {
		if (d->dev)
			pm_runtime_get_sync(d->dev);

		ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
		if (ret != 0)
			dev_err(d->dev,
				"ASoC: Failed to turn on bias: %d\n", ret);
	}

	/* Prepare for a transition to ON or away from ON */
	if ((d->target_bias_level == SND_SOC_BIAS_ON &&
	     d->bias_level != SND_SOC_BIAS_ON) ||
	    (d->target_bias_level != SND_SOC_BIAS_ON &&
	     d->bias_level == SND_SOC_BIAS_ON)) {
		ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
		if (ret != 0)
			dev_err(d->dev,
				"ASoC: Failed to prepare bias: %d\n", ret);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 114 82.61% 3 50.00%
Lars-Peter Clausen 21 15.22% 1 16.67%
Liam Girdwood 2 1.45% 1 16.67%
Peter Meerwald-Stadler 1 0.72% 1 16.67%
Total 138 100.00% 6 100.00%

/* Async callback run prior to DAPM sequences - brings to their final
 * state.
 */


static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
{
	struct snd_soc_dapm_context *d = data;
	int ret;

	/* If we just powered the last thing off drop to standby bias */
	if (d->bias_level == SND_SOC_BIAS_PREPARE &&
	    (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
	     d->target_bias_level == SND_SOC_BIAS_OFF)) {
		ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
		if (ret != 0)
			dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
				ret);
	}

	/* If we're in standby and can support bias off then do that */
	if (d->bias_level == SND_SOC_BIAS_STANDBY &&
	    d->target_bias_level == SND_SOC_BIAS_OFF) {
		ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
		if (ret != 0)
			dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
				ret);

		if (d->dev)
			pm_runtime_put(d->dev);
	}

	/* If we just powered up then move to active bias */
	if (d->bias_level == SND_SOC_BIAS_PREPARE &&
	    d->target_bias_level == SND_SOC_BIAS_ON) {
		ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
		if (ret != 0)
			dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
				ret);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 170 98.27% 4 80.00%
Liam Girdwood 3 1.73% 1 20.00%
Total 173 100.00% 5 100.00%



static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
				       bool power, bool connect)
{
	/* If a connection is being made or broken then that update
         * will have marked the peer dirty, otherwise the widgets are
         * not connected and this update has no impact. */
	if (!connect)
		return;

	/* If the peer is already in the state we're moving to then we
         * won't have an impact on it. */
	if (power != peer->power)
		dapm_mark_dirty(peer, "peer state change");
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 40 100.00% 2 100.00%
Total 40 100.00% 2 100.00%



static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
				  struct list_head *up_list,
				  struct list_head *down_list)
{
	struct snd_soc_dapm_path *path;

	if (w->power == power)
		return;

	trace_snd_soc_dapm_widget_power(w, power);

	/* If we changed our power state perhaps our neigbours changed
         * also.
         */
	snd_soc_dapm_widget_for_each_source_path(w, path)
		dapm_widget_set_peer_power(path->source, power, path->connect);

	/* Supplies can't affect their outputs, only their inputs */
	if (!w->is_supply) {
		snd_soc_dapm_widget_for_each_sink_path(w, path)
			dapm_widget_set_peer_power(path->sink, power,
						   path->connect);
	}

	if (power)
		dapm_seq_insert(w, up_list, true);
	else
		dapm_seq_insert(w, down_list, false);
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 107 91.45% 4 66.67%
Lars-Peter Clausen 10 8.55% 2 33.33%
Total 117 100.00% 6 100.00%



static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
				  struct list_head *up_list,
				  struct list_head *down_list)
{
	int power;

	switch (w->id) {
	case snd_soc_dapm_pre:
		dapm_seq_insert(w, down_list, false);
		break;
	case snd_soc_dapm_post:
		dapm_seq_insert(w, up_list, true);
		break;

	default:
		power = dapm_widget_power_check(w);

		dapm_widget_set_power(w, power, up_list, down_list);
		break;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 77 98.72% 9 90.00%
Richard Purdie 1 1.28% 1 10.00%
Total 78 100.00% 10 100.00%



static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm)
{
	if (dapm->idle_bias_off)
		return true;

	switch (snd_power_get_state(dapm->card->snd_card)) {
	case SNDRV_CTL_POWER_D3hot:
	case SNDRV_CTL_POWER_D3cold:
		return dapm->suspend_bias_off;
	default:
		break;
	}

	return false;
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 49 100.00% 1 100.00%
Total 49 100.00% 1 100.00%

/*
 * Scan each dapm widget for complete audio path.
 * A complete path is a route that has valid endpoints i.e.:-
 *
 *  o DAC to output pin.
 *  o Input pin to ADC.
 *  o Input pin to Output pin (bypass, sidetone)
 *  o DAC to ADC (loopback).
 */


static int dapm_power_widgets(struct snd_soc_card *card, int event)
{
	struct snd_soc_dapm_widget *w;
	struct snd_soc_dapm_context *d;
	LIST_HEAD(up_list);
	LIST_HEAD(down_list);
	ASYNC_DOMAIN_EXCLUSIVE(async_domain);
	enum snd_soc_bias_level bias;

	lockdep_assert_held(&card->dapm_mutex);

	trace_snd_soc_dapm_start(card);

	list_for_each_entry(d, &card->dapm_list, list) {
		if (dapm_idle_bias_off(d))
			d->target_bias_level = SND_SOC_BIAS_OFF;
		else
			d->target_bias_level = SND_SOC_BIAS_STANDBY;
	}

	dapm_reset(card);

	/* Check which widgets we need to power and store them in
         * lists indicating if they should be powered up or down.  We
         * only check widgets that have been flagged as dirty but note
         * that new widgets may be added to the dirty list while we
         * iterate.
         */
	list_for_each_entry(w, &card->dapm_dirty, dirty) {
		dapm_power_one_widget(w, &up_list, &down_list);
	}

	list_for_each_entry(w, &card->widgets, list) {
		switch (w->id) {
		case snd_soc_dapm_pre:
		case snd_soc_dapm_post:
			/* These widgets always need to be powered */
			break;
		default:
			list_del_init(&w->dirty);
			break;
		}

		if (w->new_power) {
			d = w->dapm;

			/* Supplies and micbiases only bring the
                         * context up to STANDBY as unless something
                         * else is active and passing audio they
                         * generally don't require full power.  Signal
                         * generators are virtual pins and have no
                         * power impact themselves.
                         */
			switch (w->id) {
			case snd_soc_dapm_siggen:
			case snd_soc_dapm_vmid:
				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)
					d->target_bias_level = SND_SOC_BIAS_STANDBY;
				break;
			default:
				d->target_bias_level = SND_SOC_BIAS_ON;
				break;
			}
		}

	}

	/* Force all contexts in the card to the same bias state if
         * they're not ground referenced.
         */
	bias = SND_SOC_BIAS_OFF;
	list_for_each_entry(d, &card->dapm_list, list)
		if (d->target_bias_level > bias)
			bias = d->target_bias_level;
	list_for_each_entry(d, &card->dapm_list, list)
		if (!dapm_idle_bias_off(d))
			d->target_bias_level = bias;

	trace_snd_soc_dapm_walk_done(card);

	/* Run card bias changes at first */
	dapm_pre_sequence_async(&card->dapm, 0);
	/* Run other bias changes in parallel */
	list_for_each_entry(d, &card->dapm_list, list) {
		if (d != &card->dapm)
			async_schedule_domain(dapm_pre_sequence_async, d,
						&async_domain);
	}
	async_synchronize_full_domain(&async_domain);

	list_for_each_entry(w, &down_list, power_list) {
		dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
	}

	list_for_each_entry(w, &up_list, power_list) {
		dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
	}

	/* Power down widgets first; try to avoid amplifying pops. */
	dapm_seq_run(card, &down_list, event, false);

	dapm_widget_update(card);

	/* Now power up. */
	dapm_seq_run(card, &up_list, event, true);

	/* Run all the bias changes in parallel */
	list_for_each_entry(d, &card->dapm_list, list) {
		if (d != &card->dapm)
			async_schedule_domain(dapm_post_sequence_async, d,
						&async_domain);
	}
	async_synchronize_full_domain(&async_domain);
	/* Run card bias changes at last */
	dapm_post_sequence_async(&card->dapm, 0);

	/* do we need to notify any clients that DAPM event is complete */
	list_for_each_entry(d, &card->dapm_list, list) {
		if (d->stream_event)
			d->stream_event(d, event);
	}

	pop_dbg(card->dev, card->pop_time,
		"DAPM sequencing finished, waiting %dms\n", card->pop_time);
	pop_wait(card->pop_time);

	trace_snd_soc_dapm_done(card);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 369 75.00% 25 64.10%
Xiang Xiao 45 9.15% 1 2.56%
Liam Girdwood 27 5.49% 2 5.13%
Jarkko Nikula 22 4.47% 3 7.69%
Lars-Peter Clausen 22 4.47% 5 12.82%
Ola Lilja 3 0.61% 1 2.56%
Srinivas Kandagatla 3 0.61% 1 2.56%
Dan J Williams 1 0.20% 1 2.56%
Total 492 100.00% 39 100.00%

#ifdef CONFIG_DEBUG_FS


static ssize_t dapm_widget_power_read_file(struct file *file,
					   char __user *user_buf,
					   size_t count, loff_t *ppos)
{
	struct snd_soc_dapm_widget *w = file->private_data;
	struct snd_soc_card *card = w->dapm->card;
	enum snd_soc_dapm_direction dir, rdir;
	char *buf;
	int in, out;
	ssize_t ret;
	struct snd_soc_dapm_path *p = NULL;

	buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	mutex_lock(&card->dapm_mutex);

	/* Supply widgets are not handled by is_connected_{input,output}_ep() */
	if (w->is_supply) {
		in = 0;
		out = 0;
	} else {
		in = is_connected_input_ep(w, NULL, NULL);
		out = is_connected_output_ep(w, NULL, NULL);
	}

	ret = snprintf(buf, PAGE_SIZE, "%s: %s%s  in %d out %d",
		       w->name, w->power ? "On" : "Off",
		       w->force ? " (forced)" : "", in, out);

	if (w->reg >= 0)
		ret += snprintf(buf + ret, PAGE_SIZE - ret,
				" - R%d(0x%x) mask 0x%x",
				w->reg, w->reg, w->mask << w->shift);

	ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");

	if (w->sname)
		ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
				w->sname,
				w->active ? "active" : "inactive");

	snd_soc_dapm_for_each_direction(dir) {
		rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
		snd_soc_dapm_widget_for_each_path(w, dir, p) {
			if (p->connected && !p->connected(p->source, p->sink))
				continue;

			if (!p->connect)
				continue;

			ret += snprintf(buf + ret, PAGE_SIZE - ret,
					" %s  \"%s\" \"%s\"\n",
					(rdir == SND_SOC_DAPM_DIR_IN) ? "in" : "out",
					p->name ? p->name : "static",
					p->node[rdir]->name);
		}
	}

	mutex_unlock(&card->dapm_mutex);

	ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);

	kfree(buf);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 287 74.55% 5 38.46%
Lars-Peter Clausen 86 22.34% 5 38.46%
KaiChieh Chuang 4 1.04% 1 7.69%
Liam Girdwood 4 1.04% 1 7.69%
Piotr Stankiewicz 4 1.04% 1 7.69%
Total 385 100.00% 13 100.00%


static const struct file_operations dapm_widget_power_fops = {
	.open = simple_open,
	.read = dapm_widget_power_read_file,
	.llseek = default_llseek,
};



static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
				   size_t count, loff_t *ppos)
{
	struct snd_soc_dapm_context *dapm = file->private_data;
	char *level;

	switch (dapm->bias_level) {
	case SND_SOC_BIAS_ON:
		level = "On\n";
		break;
	case SND_SOC_BIAS_PREPARE:
		level = "Prepare\n";
		break;
	case SND_SOC_BIAS_STANDBY:
		level = "Standby\n";
		break;
	case SND_SOC_BIAS_OFF:
		level = "Off\n";
		break;
	default:
		WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
		level = "Unknown\n";
		break;
	}

	return simple_read_from_buffer(user_buf, count, ppos, level,
				       strlen(level));
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 100 90.91% 1 50.00%
Takashi Iwai 10 9.09% 1 50.00%
Total 110 100.00% 2 100.00%


static const struct file_operations dapm_bias_fops = {
	.open = simple_open,
	.read = dapm_bias_read_file,
	.llseek = default_llseek,
};



void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
	struct dentry *parent)
{
	struct dentry *d;

	if (!parent)
		return;

	dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);

	if (!dapm->debugfs_dapm) {
		dev_warn(dapm->dev,
		       "ASoC: Failed to create DAPM debugfs directory\n");
		return;
	}

	d = debugfs_create_file("bias_level", 0444,
				dapm->debugfs_dapm, dapm,
				&dapm_bias_fops);
	if (!d)
		dev_warn(dapm->dev,
			 "ASoC: Failed to create bias level debugfs file\n");
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 51 57.95% 2 25.00%
Lars-Peter Clausen 28 31.82% 3 37.50%
Liam Girdwood 9 10.23% 3 37.50%
Total 88 100.00% 8 100.00%



static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
{
	struct snd_soc_dapm_context *dapm = w->dapm;
	struct dentry *d;

	if (!dapm->debugfs_dapm || !w->name)
		return;

	d = debugfs_create_file(w->name, 0444,
				dapm->debugfs_dapm, w,
				&dapm_widget_power_fops);
	if (!d)
		dev_warn(w->dapm->dev,
			"ASoC: Failed to create %s debugfs file\n",
			w->name);
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 39 50.00% 1 20.00%
Lars-Peter Clausen 28 35.90% 1 20.00%
Jarkko Nikula 10 12.82% 2 40.00%
Liam Girdwood 1 1.28% 1 20.00%
Total 78 100.00% 5 100.00%



static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
{
	debugfs_remove_recursive(dapm->debugfs_dapm);
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%

#else


void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
	struct dentry *parent)
{
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 7 50.00% 1 33.33%
Lars-Peter Clausen 5 35.71% 1 33.33%
Liam Girdwood 2 14.29% 1 33.33%
Total 14 100.00% 3 100.00%



static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
{
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 11 100.00% 1 100.00%
Total 11 100.00% 1 100.00%



static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
{
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 11 100.00% 1 100.00%
Total 11 100.00% 1 100.00%

#endif

/*
 * soc_dapm_connect_path() - Connects or disconnects a path
 * @path: The path to update
 * @connect: The new connect state of the path. True if the path is connected,
 *  false if it is disconnected.
 * @reason: The reason why the path changed (for debugging only)
 */


static void soc_dapm_connect_path(struct snd_soc_dapm_path *path,
	bool connect, const char *reason)
{
	if (path->connect == connect)
		return;

	path->connect = connect;
	dapm_mark_dirty(path->source, reason);
	dapm_mark_dirty(path->sink, reason);
	dapm_path_invalidate(path);
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 57 100.00% 2 100.00%
Total 57 100.00% 2 100.00%

/* test and update the power status of a mux widget */


static int soc_dapm_mux_update_power(struct snd_soc_card *card,
				 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
{
	struct snd_soc_dapm_path *path;
	int found = 0;
	bool connect;

	lockdep_assert_held(&card->dapm_mutex);

	/* find dapm widget path assoc with kcontrol */
	dapm_kcontrol_for_each_path(path, kcontrol) {
		found = 1;
		/* we now need to match the string in the enum to the path */
		if (!(strcmp(path->name, e->texts[mux])))
			connect = true;
		else
			connect = false;

		soc_dapm_connect_path(path, connect, "mux update");
	}

	if (found)
		dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);

	return found;
}

Contributors
Person Tokens Prop Commits CommitProp
Richard Purdie 71 64.55% 1 9.09%
Lars-Peter Clausen 20 18.18% 4 36.36%
Mark Brown 13 11.82% 3 27.27%
Richard Zhao 3 2.73% 1 9.09%
Liam Girdwood 3 2.73% 2 18.18%
Total 110 100.00% 11 100.00%



int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
	struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
	struct snd_soc_dapm_update *update)
{
	struct snd_soc_card *card = dapm->card;
	int ret;

	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
	card->update = update;
	ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
	card->update = NULL;
	mutex_unlock(&card->dapm_mutex);
	if (ret > 0)
		soc_dpcm_runtime_update(card);
	return ret;
}
Contributors
Person Tokens Prop Commits CommitProp
Liam Girdwood 76 78.35% 3 37.50%
Lars-Peter Clausen 21 21.65% 5 62.50%
Total 97 100.00% 8 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);

/* test and update the power status of a mixer or switch widget */


static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
				       struct snd_kcontrol *kcontrol,
				       int connect, int rconnect)
{
	struct snd_soc_dapm_path *path;
	int found = 0;

	lockdep_assert_held(&card->dapm_mutex);

	/* find dapm widget path assoc with kcontrol */
	dapm_kcontrol_for_each_path(path, kcontrol) {
		/*
                 * Ideally this function should support any number of
                 * paths and channels. But since kcontrols only come
                 * in mono and stereo variants, we are limited to 2
                 * channels.
                 *
                 * The following code assumes for stereo controls the
                 * first path (when 'found == 0') is the left channel,
                 * and all remaining paths (when 'found == 1') are the
                 * right channel.
                 *
                 * A stereo control is signified by a valid 'rconnect'
                 * value, either 0 for unconnected, or >= 0 for connected.
                 * This is chosen instead of using snd_soc_volsw_is_stereo,
                 * so that the behavior of snd_soc_dapm_mixer_update_power
                 * doesn't change even when the kcontrol passed in is
                 * stereo.
                 *
                 * It passes 'connect' as the path connect status for
                 * the left channel, and 'rconnect' for the right
                 * channel.
                 */
		if (found && rconnect >= 0)
			soc_dapm_connect_path(path, rconnect, "mixer update");
		else
			soc_dapm_connect_path(path, connect, "mixer update");
		found = 1;
	}

	if (found)
		dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);

	return found;
}

Contributors
Person Tokens Prop Commits CommitProp
Peter Ujfalusi 27 28.42% 1 7.69%
Chen-Yu Tsai 24 25.26% 1 7.69%
Mark Brown 16 16.84% 4 30.77%
Richard Purdie 13 13.68% 1 7.69%
Lars-Peter Clausen 12 12.63% 4 30.77%
Liam Girdwood 3 3.16% 2 15.38%
Total 95 100.00% 13 100.00%



int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
	struct snd_kcontrol *kcontrol, int connect,
	struct snd_soc_dapm_update *update)
{
	struct snd_soc_card *card = dapm->card;
	int ret;

	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
	card->update = update;
	ret = soc_dapm_mixer_update_power(card, kcontrol, connect, -1);
	card->update = NULL;
	mutex_unlock(&card->dapm_mutex);
	if (ret > 0)
		soc_dpcm_runtime_update(card);
	return ret;
}
Contributors
Person Tokens Prop Commits CommitProp
Liam Girdwood 69 74.19% 3 33.33%
Lars-Peter Clausen 21 22.58% 5 55.56%
Chen-Yu Tsai 3 3.23% 1 11.11%
Total 93 100.00% 9 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);



static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
	char *buf)
{
	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt);
	struct snd_soc_dapm_widget *w;
	int count = 0;
	char *state = "not set";

	/* card won't be set for the dummy component, as a spot fix
         * we're checking for that case specifically here but in future
         * we will ensure that the dummy component looks like others.
         */
	if (!cmpnt->card)
		return 0;

	list_for_each_entry(w, &cmpnt->card->widgets, list) {
		if (w->dapm != dapm)
			continue;

		/* only display widgets that burn power */
		switch (w->id) {
		case snd_soc_dapm_hp:
		case snd_soc_dapm_mic:
		case snd_soc_dapm_spk:
		case snd_soc_dapm_line:
		case snd_soc_dapm_micbias:
		case snd_soc_dapm_dac:
		case snd_soc_dapm_adc:
		case snd_soc_dapm_pga:
		case snd_soc_dapm_out_drv:
		case snd_soc_dapm_mixer:
		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",
					w->name, w->power ? "On":"Off");
		break;
		default:
		break;
		}
	}

	switch (snd_soc_dapm_get_bias_level(dapm)) {
	case SND_SOC_BIAS_ON:
		state = "On";
		break;
	case SND_SOC_BIAS_PREPARE:
		state = "Prepare";
		break;
	case SND_SOC_BIAS_STANDBY:
		state = "Standby";
		break;
	case SND_SOC_BIAS_OFF:
		state = "Off";
		break;
	}
	count += sprintf(buf + count, "PM State: %s\n", state);

	return count;
}

Contributors
Person Tokens Prop Commits CommitProp
Richard Purdie 131 61.21% 1 7.14%
Mark Brown 25 11.68% 4 28.57%
Peter Ujfalusi 18 8.41% 1 7.14%
Lars-Peter Clausen 17 7.94% 1 7.14%
Jarkko Nikula 9 4.21% 1 7.14%
Ola Lilja 3 1.40% 1 7.14%
Margarita Olaya Cabrera 3 1.40% 1 7.14%
Ian Molton 3 1.40% 1 7.14%
Srinivas Kandagatla 3 1.40% 1 7.14%
Liam Girdwood 1 0.47% 1 7.14%
Peter Meerwald-Stadler 1 0.47% 1 7.14%
Total 214 100.00% 14 100.00%

/* show dapm widget status in sys fs */


static ssize_t dapm_widget_show(struct device *dev,
	struct device_attribute *attr, char *buf)
{
	struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
	int i, count = 0;

	mutex_lock(&rtd->card->dapm_mutex);

	for (i = 0; i < rtd->num_codecs; i++) {
		struct snd_soc_component *cmpnt = rtd->codec_dais[i]->component;

		count += dapm_widget_show_component(cmpnt, buf + count);
	}

	mutex_unlock(&rtd->card->dapm_mutex);

	return count;
}

Contributors
Person Tokens Prop Commits CommitProp
Benoît Cousson 77 75.49% 1 33.33%
Lars-Peter Clausen 25 24.51% 2 66.67%
Total 102 100.00% 3 100.00%

static DEVICE_ATTR_RO(dapm_widget);


struct attribute *soc_dapm_dev_attrs[] = {
	&dev_attr_dapm_widget.attr,
	NULL
};



static void dapm_free_path(struct snd_soc_dapm_path *path)
{
	list_del(&path->list_node[SND_SOC_DAPM_DIR_IN]);
	list_del(&path->list_node[SND_SOC_DAPM_DIR_OUT]);
	list_del(&path->list_kcontrol);
	list_del(&path->list);
	kfree(path);
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 54 100.00% 3 100.00%
Total 54 100.00% 3 100.00%



void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w)
{
	struct snd_soc_dapm_path *p, *next_p;
	enum snd_soc_dapm_direction dir;

	list_del(&w->list);
	/*
         * remove source and sink paths associated to this widget.
         * While removing the path, remove reference to it from both
         * source and sink widgets so that path is removed only once.
         */
	snd_soc_dapm_for_each_direction(dir) {
		snd_soc_dapm_widget_for_each_path_safe(w, dir, p, next_p)
			dapm_free_path(p);
	}

	kfree(w->kcontrols);
	kfree_const(w->name);
	kfree(w);
}

Contributors
Person Tokens Prop Commits CommitProp
Richard Purdie 34 47.89% 1 12.50%
Lars-Peter Clausen 19 26.76% 4 50.00%
Jarkko Nikula 12 16.90% 2 25.00%
Stephen Warren 6 8.45% 1 12.50%
Total 71 100.00% 8 100.00%



void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context *dapm)
{
	dapm->path_sink_cache.widget = NULL;
	dapm->path_source_cache.widget = NULL;
}

Contributors
Person Tokens Prop Commits CommitProp
Jyri Sarha 26 100.00% 1 100.00%
Total 26 100.00% 1 100.00%

/* free all dapm widgets and resources */


static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
{
	struct snd_soc_dapm_widget *w, *next_w;

	list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
		if (w->dapm != dapm)
			continue;
		snd_soc_dapm_free_widget(w);
	}
	snd_soc_dapm_reset_cache(dapm);
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 44 88.00% 1 33.33%
Jyri Sarha 5 10.00% 1 33.33%
Richard Purdie 1 2.00% 1 33.33%
Total 50 100.00% 3 100.00%



static struct snd_soc_dapm_widget *dapm_find_widget(
			struct snd_soc_dapm_context *dapm, const char *pin,
			bool search_other_contexts)
{
	struct snd_soc_dapm_widget *w;
	struct snd_soc_dapm_widget *fallback = NULL;

	list_for_each_entry(w, &dapm->card->widgets, list) {
		if (!strcmp(w->name, pin)) {
			if (w->dapm == dapm)
				return w;
			else
				fallback = w;
		}
	}

	if (search_other_contexts)
		return fallback;

	return NULL;
}

Contributors
Person Tokens Prop Commits CommitProp
Liam Girdwood 46 55.42% 2 28.57%
Lars-Peter Clausen 30 36.14% 1 14.29%
Mark Brown 4 4.82% 2 28.57%
Jarkko Nikula 3 3.61% 2 28.57%
Total 83 100.00% 7 100.00%



static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
				const char *pin, int status)
{
	struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);

	dapm_assert_locked(dapm);

	if (!w) {
		dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
		return -EINVAL;
	}

	if (w->connected != status) {
		dapm_mark_dirty(w, "pin configuration");
		dapm_widget_invalidate_input_paths(w);
		dapm_widget_invalidate_output_paths(w);
	}

	w->connected = status;
	if (status == 0)
		w->force = 0;

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 61 56.48% 3 50.00%
Lars-Peter Clausen 46 42.59% 2 33.33%
Liam Girdwood 1 0.93% 1 16.67%
Total 108 100.00% 6 100.00%

/**
 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
 * @dapm: DAPM context
 *
 * Walks all dapm audio paths and powers widgets according to their
 * stream or path usage.
 *
 * Requires external locking.
 *
 * Returns 0 for success.
 */


int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
{
	/*
         * Suppress early reports (eg, jacks syncing their state) to avoid
         * silly DAPM runs during card startup.
         */
	if (!dapm->card || !dapm->card->instantiated)
		return 0;

	return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
}
Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 18 47.37% 1 25.00%
Charles Keepax 12 31.58% 1 25.00%
Richard Purdie 6 15.79% 1 25.00%
Liam Girdwood 2 5.26% 1 25.00%
Total 38 100.00% 4 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);

/**
 * snd_soc_dapm_sync - scan and power dapm paths
 * @dapm: DAPM context
 *
 * Walks all dapm audio paths and powers widgets according to their
 * stream or path usage.
 *
 * Returns 0 for success.
 */


int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
{
	int ret;

	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
	ret = snd_soc_dapm_sync_unlocked(dapm);
	mutex_unlock(&dapm->card->dapm_mutex);
	return ret;
}
Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 30 66.67% 1 33.33%
Charles Keepax 12 26.67% 1 33.33%
Liam Girdwood 3 6.67% 1 33.33%
Total 45 100.00% 3 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);

/*
 * dapm_update_widget_flags() - Re-compute widget sink and source flags
 * @w: The widget for which to update the flags
 *
 * Some widgets have a dynamic category which depends on which neighbors they
 * are connected to. This function update the category for these widgets.
 *
 * This function must be called whenever a path is added or removed to a widget.
 */


static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
{
	enum snd_soc_dapm_direction dir;
	struct snd_soc_dapm_path *p;
	unsigned int ep;

	switch (w->id) {
	case snd_soc_dapm_input:
		/* On a fully routed card an input is never a source */
		if (w->dapm->card->fully_routed)
			return;
		ep = SND_SOC_DAPM_EP_SOURCE;
		snd_soc_dapm_widget_for_each_source_path(w, p) {
			if (p->source->id == snd_soc_dapm_micbias ||
				p->source->id == snd_soc_dapm_mic ||
				p->source->id == snd_soc_dapm_line ||
				p->source->id == snd_soc_dapm_output) {
					ep = 0;
					break;
			}
		}
		break;
	case snd_soc_dapm_output:
		/* On a fully routed card a output is never a sink */
		if (w->dapm->card->fully_routed)
			return;
		ep = SND_SOC_DAPM_EP_SINK;
		snd_soc_dapm_widget_for_each_sink_path(w, p) {
			if (p->sink->id == snd_soc_dapm_spk ||
				p->sink->id == snd_soc_dapm_hp ||
				p->sink->id == snd_soc_dapm_line ||
				p->sink->id == snd_soc_dapm_input) {
					ep = 0;
					break;
			}
		}
		break;
	case snd_soc_dapm_line:
		ep = 0;
		snd_soc_dapm_for_each_direction(dir) {
			if (!list_empty(&w->edges[dir]))
				ep |= SND_SOC_DAPM_DIR_TO_EP(dir);
		}
		break;
	default:
		return;
	}

	w->is_ep = ep;
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 205 96.24% 4 57.14%
Liam Girdwood 6 2.82% 1 14.29%
Peter Meerwald-Stadler 1 0.47% 1 14.29%
Richard Purdie 1 0.47% 1 14.29%
Total 213 100.00% 7 100.00%



static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context *dapm,
	struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink,
	const char *control)
{
	bool dynamic_source = false;
	bool dynamic_sink = false;

	if (!control)
		return 0;

	switch (source->id) {
	case snd_soc_dapm_demux:
		dynamic_source = true;
		break;
	default:
		break;
	}

	switch (sink->id) {
	case snd_soc_dapm_mux:
	case snd_soc_dapm_switch:
	case snd_soc_dapm_mixer:
	case snd_soc_dapm_mixer_named_ctl:
		dynamic_sink = true;
		break;
	default:
		break;
	}

	if (dynamic_source && dynamic_sink) {
		dev_err(dapm->dev,
			"Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
			source->name, control, sink->name);
		return -EINVAL;
	} else if (!dynamic_source && !dynamic_sink) {
		dev_err(dapm->dev,
			"Control not supported for path %s -> [%s] -> %s\n",
			source->name, control, sink->name);
		return -EINVAL;
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 157 100.00% 1 100.00%
Total 157 100.00% 1 100.00%



static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
	struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
	const char *control,
	int (*connected)(struct snd_soc_dapm_widget *source,
			 struct snd_soc_dapm_widget *sink))
{
	struct snd_soc_dapm_widget *widgets[2];
	enum snd_soc_dapm_direction dir;
	struct snd_soc_dapm_path *path;
	int ret;

	if (wsink->is_supply && !wsource->is_supply) {
		dev_err(dapm->dev,
			"Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
			wsource->name, wsink->name);
		return -EINVAL;
	}

	if (connected && !wsource->is_supply) {
		dev_err(dapm->dev,
			"connected() callback only supported for supply widgets (%s -> %s)\n",
			wsource->name, wsink->name);
		return -EINVAL;
	}

	if (wsource->is_supply && control) {
		dev_err(dapm->dev,
			"Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
			wsource->name, control, wsink->name);
		return -EINVAL;
	}

	ret = snd_soc_dapm_check_dynamic_path(dapm, wsource, wsink, control);
	if (ret)
		return ret;

	path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
	if (!path)
		return -ENOMEM;

	path->node[SND_SOC_DAPM_DIR_IN] = wsource;
	path->node[SND_SOC_DAPM_DIR_OUT] = wsink;
	widgets[SND_SOC_DAPM_DIR_IN] = wsource;
	widgets[SND_SOC_DAPM_DIR_OUT] = wsink;

	path->connected = connected;
	INIT_LIST_HEAD(&path->list);
	INIT_LIST_HEAD(&path->list_kcontrol);

	if (wsource->is_supply || wsink->is_supply)
		path->is_supply = 1;

	/* connect static paths */
	if (control == NULL) {
		path->connect = 1;
	} else {
		switch (wsource->id) {
		case snd_soc_dapm_demux:
			ret = dapm_connect_mux(dapm, path, control, wsource);
			if (ret)
				goto err;
			break;
		default:
			break;
		}

		switch (wsink->id) {
		case snd_soc_dapm_mux:
			ret = dapm_connect_mux(dapm, path, control, wsink);
			if (ret != 0)
				goto err;
			break;
		case snd_soc_dapm_switch:
		case snd_soc_dapm_mixer:
		case snd_soc_dapm_mixer_named_ctl:
			ret = dapm_connect_mixer(dapm, path, control);
			if (ret != 0)
				goto err;
			break;
		default:
			break;
		}
	}

	list_add(&path->list, &dapm->card->paths);
	snd_soc_dapm_for_each_direction(dir)
		list_add(&path->list_node[dir], &widgets[dir]->edges[dir]);

	snd_soc_dapm_for_each_direction(dir) {
		dapm_update_widget_flags(widgets[dir]);
		dapm_mark_dirty(widgets[dir], "Route added");
	}

	if (dapm->card->instantiated && path->connect)
		dapm_path_invalidate(path);

	return 0;
err:
	kfree(path);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 405 83.16% 8 47.06%
Richard Purdie 38 7.80% 1 5.88%
Jarkko Nikula 18 3.70% 2 11.76%
Peter Ujfalusi 12 2.46% 2 11.76%
Mark Brown 11 2.26% 3 17.65%
Liam Girdwood 3 0.62% 1 5.88%
Total 487 100.00% 17 100.00%



static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
				  const struct snd_soc_dapm_route *route)
{
	struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
	struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
	const char *sink;
	const char *source;
	char prefixed_sink[80];
	char prefixed_source[80];
	const char *prefix;
	int ret;

	prefix = soc_dapm_prefix(dapm);
	if (prefix) {
		snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
			 prefix, route->sink);
		sink = prefixed_sink;
		snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
			 prefix, route->source);
		source = prefixed_source;
	} else {
		sink = route->sink;
		source = route->source;
	}

	wsource = dapm_wcache_lookup(&dapm->path_source_cache, source);
	wsink = dapm_wcache_lookup(&dapm->path_sink_cache, sink);

	if (wsink && wsource)
		goto skip_search;

	/*
         * find src and dest widgets over all widgets but favor a widget from
         * current DAPM context
         */
	list_for_each_entry(w, &dapm->card->widgets, list) {
		if (!wsink && !(strcmp(w->name, sink))) {
			wtsink = w;
			if (w->dapm == dapm) {
				wsink = w;
				if (wsource)
					break;
			}
			continue;
		}
		if (!wsource && !(strcmp(w->name, source))) {
			wtsource = w;
			if (w->dapm == dapm) {
				wsource = w;
				if (wsink)
					break;
			}
		}
	}
	/* use widget from another DAPM context if not found from this */
	if (!wsink)
		wsink = wtsink;
	if (!wsource)
		wsource = wtsource;

	if (wsource == NULL) {
		dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
			route->source);
		return -ENODEV;
	}
	if (wsink == NULL) {
		dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
			route->sink);
		return -ENODEV;
	}

skip_search:
	dapm_wcache_update(&dapm->path_sink_cache, wsink);
	dapm_wcache_update(&dapm->path_source_cache, wsource);

	ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
		route->connected);
	if (ret)
		goto err;

	return 0;
err:
	dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
		 source, route->control, sink);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 295 70.74% 2 20.00%
Charles Keepax 69 16.55% 2 20.00%
Richard Purdie 38 9.11% 1 10.00%
Mark Brown 7 1.68% 1 10.00%
Jarkko Nikula 5 1.20% 1 10.00%
Liam Girdwood 2 0.48% 2 20.00%
Peter Ujfalusi 1 0.24% 1 10.00%
Total 417 100.00% 10 100.00%



static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
				  const struct snd_soc_dapm_route *route)
{
	struct snd_soc_dapm_widget *wsource, *wsink;
	struct snd_soc_dapm_path *path, *p;
	const char *sink;
	const char *source;
	char prefixed_sink[80];
	char prefixed_source[80];
	const char *prefix;

	if (route->control) {
		dev_err(dapm->dev,
			"ASoC: Removal of routes with controls not supported\n");
		return -EINVAL;
	}

	prefix = soc_dapm_prefix(dapm);
	if (prefix) {
		snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
			 prefix, route->sink);
		sink = prefixed_sink;
		snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
			 prefix, route->source);
		source = prefixed_source;
	} else {
		sink = route->sink;
		source = route->source;
	}

	path = NULL;
	list_for_each_entry(p, &dapm->card->paths, list) {
		if (strcmp(p->source->name, source) != 0)
			continue;
		if (strcmp(p->sink->name, sink) != 0)
			continue;
		path = p;
		break;
	}

	if (path) {
		wsource = path->source;
		wsink = path->sink;

		dapm_mark_dirty(wsource, "Route removed");
		dapm_mark_dirty(wsink, "Route removed");
		if (path->connect)
			dapm_path_invalidate(path);

		dapm_free_path(path);

		/* Update any path related flags */
		dapm_update_widget_flags(wsource);
		dapm_update_widget_flags(wsink);
	} else {
		dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
			 source, sink);
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 221 78.37% 1 16.67%
Lars-Peter Clausen 59 20.92% 4 66.67%
Liam Girdwood 2 0.71% 1 16.67%
Total 282 100.00% 6 100.00%

/**
 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
 * @dapm: DAPM context
 * @route: audio routes
 * @num: number of routes
 *
 * Connects 2 dapm widgets together via a named audio path. The sink is
 * the widget receiving the audio signal, whilst the source is the sender
 * of the audio signal.
 *
 * Returns 0 for success else error. On error all resources can be freed
 * with a call to snd_soc_card_free().
 */


int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
			    const struct snd_soc_dapm_route *route, int num)
{
	int i, r, ret = 0;

	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
	for (i = 0; i < num; i++) {
		r = snd_soc_dapm_add_route(dapm, route);
		if (r < 0) {
			dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
				route->source,
				route->control ? route->control : "direct",
				route->sink);
			ret = r;
		}
		route++;
	}
	mutex_unlock(&dapm->card->dapm_mutex);

	return ret;
}
Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 75 63.03% 2 25.00%
Liam Girdwood 35 29.41% 3 37.50%
Jarkko Nikula 5 4.20% 1 12.50%
Dan Carpenter 3 2.52% 1 12.50%
Stuart Henderson 1 0.84% 1 12.50%
Total 119 100.00% 8 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);

/**
 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
 * @dapm: DAPM context
 * @route: audio routes
 * @num: number of routes
 *
 * Removes routes from the DAPM context.
 */


int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
			    const struct snd_soc_dapm_route *route, int num)
{
	int i;

	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
	for (i = 0; i < num; i++) {
		snd_soc_dapm_del_route(dapm, route);
		route++;
	}
	mutex_unlock(&dapm->card->dapm_mutex);

	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 70 97.22% 1 33.33%
Stuart Henderson 1 1.39% 1 33.33%
Rajan Vaja 1 1.39% 1 33.33%
Total 72 100.00% 3 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);



static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
				   const struct snd_soc_dapm_route *route)
{
	struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
							      route->source,
							      true);
	struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
							    route->sink,
							    true);
	struct snd_soc_dapm_path *path;
	int count = 0;

	if (!source) {
		dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
			route->source);
		return -ENODEV;
	}

	if (!sink) {
		dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
			route->sink);
		return -ENODEV;
	}

	if (route->control || route->connected)
		dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
			 route->source, route->sink);

	snd_soc_dapm_widget_for_each_sink_path(source, path) {
		if (path->sink == sink) {
			path->weak = 1;
			count++;
		}
	}

	if (count == 0)
		dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
			route->source, route->sink);
	if (count > 1)
		dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
			 count, route->source, route->sink);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 204 96.23% 1 33.33%
Liam Girdwood 5 2.36% 1 33.33%
Lars-Peter Clausen 3 1.42% 1 33.33%
Total 212 100.00% 3 100.00%

/**
 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
 * @dapm: DAPM context
 * @route: audio routes
 * @num: number of routes
 *
 * Mark existing routes matching those specified in the passed array
 * as being weak, meaning that they are ignored for the purpose of
 * power decisions.  The main intended use case is for sidetone paths
 * which couple audio between other independent paths if they are both
 * active in order to make the combination work better at the user
 * level but which aren't intended to be "used".
 *
 * Note that CODEC drivers should not use this as sidetone type paths
 * can frequently also be used as bypass paths.
 */


int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
			     const struct snd_soc_dapm_route *route, int num)
{
	int i, err;
	int ret = 0;

	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
	for (i = 0; i < num; i++) {
		err = snd_soc_dapm_weak_route(dapm, route);
		if (err)
			ret = err;
		route++;
	}
	mutex_unlock(&dapm->card->dapm_mutex);

	return ret;
}
Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 67 75.28% 1 50.00%
Liam Girdwood 22 24.72% 1 50.00%
Total 89 100.00% 2 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);

/**
 * snd_soc_dapm_new_widgets - add new dapm widgets
 * @card: card to be checked for new dapm widgets
 *
 * Checks the codec for any new dapm widgets and creates them if found.
 *
 * Returns 0 for success.
 */


int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
{
	struct snd_soc_dapm_widget *w;
	unsigned int val;

	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);

	list_for_each_entry(w, &card->widgets, list)
	{
		if (w->new)
			continue;

		if (w->num_kcontrols) {
			w->kcontrols = kzalloc(w->num_kcontrols *
						sizeof(struct snd_kcontrol *),
						GFP_KERNEL);
			if (!w->kcontrols) {
				mutex_unlock(&card->dapm_mutex);
				return -ENOMEM;
			}
		}

		switch(w->id) {
		case snd_soc_dapm_switch:
		case snd_soc_dapm_mixer:
		case snd_soc_dapm_mixer_named_ctl:
			dapm_new_mixer(w);
			break;
		case snd_soc_dapm_mux:
		case snd_soc_dapm_demux:
			dapm_new_mux(w);
			break;
		case snd_soc_dapm_pga:
		case snd_soc_dapm_out_drv:
			dapm_new_pga(w);
			break;
		case snd_soc_dapm_dai_link:
			dapm_new_dai_link(w);
			break;
		default:
			break;
		}

		/* Read the initial power state from the device */
		if (w->reg >= 0) {
			soc_dapm_read(w->dapm, w->reg, &val);
			val = val >> w->shift;
			val &= w->mask;
			if (val == w->on_val)
				w->power = 1;
		}

		w->new = 1;

		dapm_mark_dirty(w, "new widget");
		dapm_debugfs_add_widget(w);
	}

	dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
	mutex_unlock(&card->dapm_mutex);
	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
Richard Purdie 79 32.64% 1 5.88%
Mark Brown 47 19.42% 4 23.53%
Stephen Warren 39 16.12% 1 5.88%
Liam Girdwood 28 11.57% 1 5.88%
Lars-Peter Clausen 27 11.16% 6 35.29%
Nikesh Oswal 9 3.72% 1 5.88%
Arun Shamanna Lakshmi 7 2.89% 1 5.88%
Ian Molton 3 1.24% 1 5.88%
Margarita Olaya Cabrera 3 1.24% 1 5.88%
Total 242 100.00% 17 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);

/**
 * snd_soc_dapm_get_volsw - dapm mixer get callback
 * @kcontrol: mixer control
 * @ucontrol: control element information
 *
 * Callback to get the value of a dapm mixer control.
 *
 * Returns 0 for success.
 */


int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
	struct snd_soc_card *card = dapm->card;
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
	int reg = mc->reg;
	unsigned int shift = mc->shift;
	int max = mc->max;
	unsigned int width = fls(max);
	unsigned int mask = (1 << fls(max)) - 1;
	unsigned int invert = mc->invert;
	unsigned int reg_val, val, rval = 0;
	int ret = 0;

	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
	if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) {
		ret = soc_dapm_read(dapm, reg, &reg_val);
		val = (reg_val >> shift) & mask;

		if (ret == 0 && reg != mc->rreg)
			ret = soc_dapm_read(dapm, mc->rreg, &reg_val);

		if (snd_soc_volsw_is_stereo(mc))
			rval = (reg_val >> mc->rshift) & mask;
	} else {
		reg_val = dapm_kcontrol_get_value(kcontrol);
		val = reg_val & mask;

		if (snd_soc_volsw_is_stereo(mc))
			rval = (reg_val >> width) & mask;
	}
	mutex_unlock(&card->dapm_mutex);

	if (ret)
		return ret;

	if (invert)
		ucontrol->value.integer.value[0] = max - val;
	else
		ucontrol->value.integer.value[0] = val;

	if (snd_soc_volsw_is_stereo(mc)) {
		if (invert)
			ucontrol->value.integer.value[1] = max - rval;
		else
			ucontrol->value.integer.value[1] = rval;
	}

	return ret;
}
Contributors
Person Tokens Prop Commits CommitProp
Chen-Yu Tsai 135 40.54% 2 11.11%
Richard Purdie 79 23.72% 1 5.56%
Lars-Peter Clausen 42 12.61% 3 16.67%
Mark Brown 17 5.11% 2 11.11%
Liam Girdwood 15 4.50% 2 11.11%
Jon Smirl 14 4.20% 3 16.67%
Philipp Zabel 13 3.90% 1 5.56%
Benoît Thébaudeau 8 2.40% 1 5.56%
Nenghua Cao 6 1.80% 1 5.56%
Stephen Warren 2 0.60% 1 5.56%
Daniel Ribeiro 2 0.60% 1 5.56%
Total 333 100.00% 18 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);

/**
 * snd_soc_dapm_put_volsw - dapm mixer set callback
 * @kcontrol: mixer control
 * @ucontrol: control element information
 *
 * Callback to set the value of a dapm mixer control.
 *
 * Returns 0 for success.
 */


int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
	struct snd_soc_card *card = dapm->card;
	struct soc_mixer_control *mc =
		(struct soc_mixer_control *)kcontrol->private_value;
	int reg = mc->reg;
	unsigned int shift = mc->shift;
	int max = mc->max;
	unsigned int width = fls(max);
	unsigned int mask = (1 << width) - 1;
	unsigned int invert = mc->invert;
	unsigned int val, rval = 0;
	int connect, rconnect = -1, change, reg_change = 0;
	struct snd_soc_dapm_update update = {};
	int ret = 0;

	val = (ucontrol->value.integer.value[0] & mask);
	connect = !!val;

	if (invert)
		val = max - val;

	if (snd_soc_volsw_is_stereo(mc)) {
		rval = (ucontrol->value.integer.value[1] & mask);
		rconnect = !!rval;
		if (invert)
			rval = max - rval;
	}

	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);

	/* This assumes field width < (bits in unsigned int / 2) */
	if (width > sizeof(unsigned int) * 8 / 2)
		dev_warn(dapm->dev,
			 "ASoC: control %s field width limit exceeded\n",
			 kcontrol->id.name);
	change = dapm_kcontrol_set_value(kcontrol, val | (rval << width));

	if (reg != SND_SOC_NOPM) {
		val = val << shift;
		rval = rval << mc->rshift;

		reg_change = soc_dapm_test_bits(dapm, reg, mask << shift, val);

		if (snd_soc_volsw_is_stereo(mc))
			reg_change |= soc_dapm_test_bits(dapm, mc->rreg,
							 mask << mc->rshift,
							 rval);
	}

	if (change || reg_change) {
		if (reg_change) {
			if (snd_soc_volsw_is_stereo(mc)) {
				update.has_second_set = true;
				update.reg2 = mc->rreg;
				update.mask2 = mask << mc->rshift;
				update.val2 = rval;
			}
			update.kcontrol = kcontrol;
			update.reg = reg;
			update.mask = mask << shift;
			update.val = val;
			card->update = &update;
		}
		change |= reg_change;

		ret = soc_dapm_mixer_update_power(card, kcontrol, connect,
						  rconnect);

		card->update = NULL;
	}

	mutex_unlock(&card->dapm_mutex);

	if (ret > 0)
		soc_dpcm_runtime_update(card);

	return change;
}
Contributors
Person Tokens Prop Commits CommitProp
Chen-Yu Tsai 175 38.38% 2 7.41%
Mark Brown 99 21.71% 3 11.11%
Richard Purdie 50 10.96% 1 3.70%
Lars-Peter Clausen 30 6.58% 7 25.93%
Jarkko Nikula 22 4.82% 1 3.70%
Jon Smirl 21 4.61% 2 7.41%
Nenghua Cao 18 3.95% 1 3.70%
Liam Girdwood 18 3.95% 4 14.81%
Philipp Zabel 11 2.41% 1 3.70%
Benoît Thébaudeau 9 1.97% 2 7.41%
Stephen Warren 1 0.22% 1 3.70%
Fabio Estevam 1 0.22% 1 3.70%
Daniel Ribeiro 1 0.22% 1 3.70%
Total 456 100.00% 27 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);

/**
 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
 * @kcontrol: mixer control
 * @ucontrol: control element information
 *
 * Callback to get the value of a dapm enumerated double mixer control.
 *
 * Returns 0 for success.
 */


int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
	struct snd_soc_card *card = dapm->card;
	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
	unsigned int reg_val, val;

	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
	if (e->reg != SND_SOC_NOPM && dapm_kcontrol_is_powered(kcontrol)) {
		int ret = soc_dapm_read(dapm, e->reg, &reg_val);
		if (ret) {
			mutex_unlock(&card->dapm_mutex);
			return ret;
		}
	} else {
		reg_val = dapm_kcontrol_get_value(kcontrol);
	}
	mutex_unlock(&card->dapm_mutex);

	val = (reg_val >> e->shift_l) & e->mask;
	ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
	if (e->shift_l != e->shift_r) {
		val = (reg_val >> e->shift_r) & e->mask;
		val = snd_soc_enum_val_to_item(e, val);
		ucontrol->value.enumerated.item[1] = val;
	}

	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
Peter Ujfalusi 115 54.25% 2 18.18%
Charles Keepax 42 19.81% 2 18.18%
Lars-Peter Clausen 37 17.45% 4 36.36%
Geert Uytterhoeven 15 7.08% 1 9.09%
Richard Purdie 2 0.94% 1 9.09%
Daniel Ribeiro 1 0.47% 1 9.09%
Total 212 100.00% 11 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);

/**
 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
 * @kcontrol: mixer control
 * @ucontrol: control element information
 *
 * Callback to set the value of a dapm enumerated double mixer control.
 *
 * Returns 0 for success.
 */


int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
	struct snd_soc_card *card = dapm->card;
	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
	unsigned int *item = ucontrol->value.enumerated.item;
	unsigned int val, change, reg_change = 0;
	unsigned int mask;
	struct snd_soc_dapm_update update = {};
	int ret = 0;

	if (item[0] >= e->items)
		return -EINVAL;

	val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
	mask = e->mask << e->shift_l;
	if (e->shift_l != e->shift_r) {
		if (item[1] > e->items)
			return -EINVAL;
		val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
		mask |= e->mask << e->shift_r;
	}

	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);

	change = dapm_kcontrol_set_value(kcontrol, val);

	if (e->reg != SND_SOC_NOPM)
		reg_change = soc_dapm_test_bits(dapm, e->reg, mask, val);

	if (change || reg_change) {
		if (reg_change) {
			update.kcontrol = kcontrol;
			update.reg = e->reg;
			update.mask = mask;
			update.val = val;
			card->update = &update;
		}
		change |= reg_change;

		ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);

		card->update = NULL;
	}

	mutex_unlock(&card->dapm_mutex);

	if (ret > 0)
		soc_dpcm_runtime_update(card);

	return change;
}
Contributors
Person Tokens Prop Commits CommitProp
Peter Ujfalusi 154 48.58% 2 9.09%
Mark Brown 50 15.77% 3 13.64%
Lars-Peter Clausen 43 13.56% 5 22.73%
Charles Keepax 21 6.62% 1 4.55%
Nenghua Cao 18 5.68% 1 4.55%
Liam Girdwood 16 5.05% 3 13.64%
Stephen Warren 6 1.89% 1 4.55%
Takashi Iwai 3 0.95% 1 4.55%
Daniel Ribeiro 2 0.63% 1 4.55%
Chen-Yu Tsai 2 0.63% 2 9.09%
Richard Purdie 1 0.32% 1 4.55%
Fabio Estevam 1 0.32% 1 4.55%
Total 317 100.00% 22 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);

/**
 * snd_soc_dapm_info_pin_switch - Info for a pin switch
 *
 * @kcontrol: mixer control
 * @uinfo: control element information
 *
 * Callback to provide information about a pin switch control.
 */


int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;

	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 50 100.00% 1 100.00%
Total 50 100.00% 1 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);

/**
 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
 *
 * @kcontrol: mixer control
 * @ucontrol: Value
 */


int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
	const char *pin = (const char *)kcontrol->private_value;

	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);

	ucontrol->value.integer.value[0] =
		snd_soc_dapm_get_pin_status(&card->dapm, pin);

	mutex_unlock(&card->dapm_mutex);

	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 73 90.12% 2 40.00%
Liam Girdwood 8 9.88% 3 60.00%
Total 81 100.00% 5 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);

/**
 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
 *
 * @kcontrol: mixer control
 * @ucontrol: Value
 */


int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
	const char *pin = (const char *)kcontrol->private_value;

	if (ucontrol->value.integer.value[0])
		snd_soc_dapm_enable_pin(&card->dapm, pin);
	else
		snd_soc_dapm_disable_pin(&card->dapm, pin);

	snd_soc_dapm_sync(&card->dapm);
	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 76 90.48% 2 50.00%
Liam Girdwood 8 9.52% 2 50.00%
Total 84 100.00% 4 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);


struct snd_soc_dapm_widget *

snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
	const struct snd_soc_dapm_widget *widget)
{
	struct snd_soc_dapm_widget *w;

	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
	w = snd_soc_dapm_new_control_unlocked(dapm, widget);
	/* Do not nag about probe deferrals */
	if (IS_ERR(w)) {
		int ret = PTR_ERR(w);

		if (ret != -EPROBE_DEFER)
			dev_err(dapm->dev,
				"ASoC: Failed to create DAPM control %s (%d)\n",
				widget->name, ret);
		goto out_unlock;
	}
	if (!w)
		dev_err(dapm->dev,
			"ASoC: Failed to create DAPM control %s\n",
			widget->name);

out_unlock:
	mutex_unlock(&dapm->card->dapm_mutex);
	return w;
}
Contributors
Person Tokens Prop Commits CommitProp
Liam Girdwood 55 45.83% 2 40.00%
Linus Walleij 45 37.50% 1 20.00%
Richard Purdie 17 14.17% 1 20.00%
Mark Brown 3 2.50% 1 20.00%
Total 120 100.00% 5 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);


struct snd_soc_dapm_widget *

snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
			 const struct snd_soc_dapm_widget *widget)
{
	enum snd_soc_dapm_direction dir;
	struct snd_soc_dapm_widget *w;
	const char *prefix;
	int ret;

	if ((w = dapm_cnew_widget(widget)) == NULL)
		return NULL;

	switch (w->id) {
	case snd_soc_dapm_regulator_supply:
		w->regulator = devm_regulator_get(dapm->dev, w->name);
		if (IS_ERR(w->regulator)) {
			ret = PTR_ERR(w->regulator);
			if (ret == -EPROBE_DEFER)
				return ERR_PTR(ret);
			dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
				w->name, ret);
			return NULL;
		}

		if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
			ret = regulator_allow_bypass(w->regulator, true);
			if (ret != 0)
				dev_warn(w->dapm->dev,
					 "ASoC: Failed to bypass %s: %d\n",
					 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);
		if (IS_ERR(w->clk)) {
			ret = PTR_ERR(w->clk);
			if (ret == -EPROBE_DEFER)
				return ERR_PTR(ret);
			dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
				w->name, ret);
			return NULL;
		}
#else
		return NULL;
#endif
		break;
	default:
		break;
	}

	prefix = soc_dapm_prefix(dapm);
	if (prefix)
		w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
	else
		w->name = kstrdup_const(widget->name, GFP_KERNEL);
	if (w->name == NULL) {
		kfree(w);
		return NULL;
	}

	switch (w->id) {
	case snd_soc_dapm_mic:
		w->is_ep = SND_SOC_DAPM_EP_SOURCE;
		w->power_check = dapm_generic_check_power;
		break;
	case snd_soc_dapm_input:
		if (!dapm->card->fully_routed)
			w->is_ep = SND_SOC_DAPM_EP_SOURCE;
		w->power_check = dapm_generic_check_power;
		break;
	case snd_soc_dapm_spk:
	case snd_soc_dapm_hp:
		w->is_ep = SND_SOC_DAPM_EP_SINK;
		w->power_check = dapm_generic_check_power;
		break;
	case snd_soc_dapm_output:
		if (!dapm->card->fully_routed)
			w->is_ep = SND_SOC_DAPM_EP_SINK;
		w->power_check = dapm_generic_check_power;
		break;
	case snd_soc_dapm_vmid:
	case snd_soc_dapm_siggen:
		w->is_ep = SND_SOC_DAPM_EP_SOURCE;
		w->power_check = dapm_always_on_check_power;
		break;
	case snd_soc_dapm_sink:
		w->is_ep = SND_SOC_DAPM_EP_SINK;
		w->power_check = dapm_always_on_check_power;
		break;

	case snd_soc_dapm_mux:
	case snd_soc_dapm_demux:
	case snd_soc_dapm_switch:
	case snd_soc_dapm_mixer:
	case snd_soc_dapm_mixer_named_ctl:
	case snd_soc_dapm_adc:
	case snd_soc_dapm_aif_out:
	case snd_soc_dapm_dac:
	case snd_soc_dapm_aif_in:
	case snd_soc_dapm_pga:
	case snd_soc_dapm_out_drv:
	case snd_soc_dapm_micbias:
	case snd_soc_dapm_line:
	case snd_soc_dapm_dai_link:
	case snd_soc_dapm_dai_out:
	case snd_soc_dapm_dai_in:
		w->power_check = dapm_generic_check_power;
		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;
		w->power_check = dapm_supply_check_power;
		break;
	default:
		w->power_check = dapm_always_on_check_power;
		break;
	}

	w->dapm = dapm;
	INIT_LIST_HEAD(&w->list);
	INIT_LIST_HEAD(&w->dirty);
	list_add_tail(&w->list, &dapm->card->widgets);

	snd_soc_dapm_for_each_direction(dir) {
		INIT_LIST_HEAD(&w->edges[dir]);
		w->endpoints[dir] = -1;
	}

	/* machine layer sets up unconnected pins and insertions */
	w->connected = 1;
	return w;
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 208 30.86% 11 30.56%
Lars-Peter Clausen 178 26.41% 12 33.33%
Srinivas Kandagatla 69 10.24% 1 2.78%
Ola Lilja 58 8.61% 1 2.78%
Richard Purdie 44 6.53% 1 2.78%
Jarkko Nikula 40 5.93% 2 5.56%
Liam Girdwood 33 4.90% 4 11.11%
Linus Walleij 26 3.86% 1 2.78%
Vinod Koul 16 2.37% 1 2.78%
Peter Meerwald-Stadler 1 0.15% 1 2.78%
Charles Keepax 1 0.15% 1 2.78%
Total 674 100.00% 36 100.00%

/**
 * snd_soc_dapm_new_controls - create new dapm controls
 * @dapm: DAPM context
 * @widget: widget array
 * @num: number of widgets
 *
 * Creates new DAPM controls based upon the templates.
 *
 * Returns 0 for success else error.
 */


int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
	const struct snd_soc_dapm_widget *widget,
	int num)
{
	struct snd_soc_dapm_widget *w;
	int i;
	int ret = 0;

	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
	for (i = 0; i < num; i++) {
		w = snd_soc_dapm_new_control_unlocked(dapm, widget);
		if (IS_ERR(w)) {
			ret = PTR_ERR(w);
			/* Do not nag about probe deferrals */
			if (ret == -EPROBE_DEFER)
				break;
			dev_err(dapm->dev,
				"ASoC: Failed to create DAPM control %s (%d)\n",
				widget->name, ret);
			break;
		}
		if (!w) {
			dev_err(dapm->dev,
				"ASoC: Failed to create DAPM control %s\n",
				widget->name);
			ret = -ENOMEM;
			break;
		}
		widget++;
	}
	mutex_unlock(&dapm->card->dapm_mutex);
	return ret;
}
Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 69 45.70% 3 33.33%
Linus Walleij 41 27.15% 1 11.11%
Liam Girdwood 26 17.22% 3 33.33%
Dan Carpenter 10 6.62% 1 11.11%
Jarkko Nikula 5 3.31% 1 11.11%
Total 151 100.00% 9 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);



static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
				  struct snd_kcontrol *kcontrol, int event)
{
	struct snd_soc_dapm_path *source_p, *sink_p;
	struct snd_soc_dai *source, *sink;
	const struct snd_soc_pcm_stream *config = w->params + w->params_select;
	struct snd_pcm_substream substream;
	struct snd_pcm_hw_params *params = NULL;
	struct snd_pcm_runtime *runtime = NULL;
	u64 fmt;
	int ret;

	if (WARN_ON(!config) ||
	    WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) ||
		    list_empty(&w->edges[SND_SOC_DAPM_DIR_IN])))
		return -EINVAL;

	/* We only support a single source and sink, pick the first */
	source_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_OUT],
				    struct snd_soc_dapm_path,
				    list_node[SND_SOC_DAPM_DIR_OUT]);
	sink_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_IN],
				    struct snd_soc_dapm_path,
				    list_node[SND_SOC_DAPM_DIR_IN]);

	source = source_p->source->priv;
	sink = sink_p->sink->priv;

	/* Be a little careful as we don't want to overflow the mask array */
	if (config->formats) {
		fmt = ffs(config->formats) - 1;
	} else {
		dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
			 config->formats);
		fmt = 0;
	}

	/* Currently very limited parameter selection */
	params = kzalloc(sizeof(*params), GFP_KERNEL);
	if (!params) {
		ret = -ENOMEM;
		goto out;
	}
	snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);

	hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
		config->rate_min;
	hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
		config->rate_max;

	hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
		= config->channels_min;
	hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
		= config->channels_max;

	memset(&substream, 0, sizeof(substream));

	/* Allocate a dummy snd_pcm_runtime for startup() and other ops() */
	runtime = kzalloc(sizeof(*runtime), GFP_KERNEL);
	if (!runtime) {
		ret = -ENOMEM;
		goto out;
	}
	substream.runtime = runtime;

	switch (event) {
	case SND_SOC_DAPM_PRE_PMU:
		substream.stream = SNDRV_PCM_STREAM_CAPTURE;
		if (source->driver->ops->startup) {
			ret = source->driver->ops->startup(&substream, source);
			if (ret < 0) {
				dev_err(source->dev,
					"ASoC: startup() failed: %d\n", ret);
				goto out;
			}
			source->active++;
		}
		ret = soc_dai_hw_params(&substream, params, source);
		if (ret < 0)
			goto out;

		substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
		if (sink->driver->ops->startup) {
			ret = sink->driver->ops->startup(&substream, sink);
			if (ret < 0) {
				dev_err(sink->dev,
					"ASoC: startup() failed: %d\n", ret);
				goto out;
			}
			sink->active++;
		}
		ret = soc_dai_hw_params(&substream, params, sink);
		if (ret < 0)
			goto out;
		break;

	case SND_SOC_DAPM_POST_PMU:
		ret = snd_soc_dai_digital_mute(sink, 0,
					       SNDRV_PCM_STREAM_PLAYBACK);
		if (ret != 0 && ret != -ENOTSUPP)
			dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
		ret = 0;
		break;

	case SND_SOC_DAPM_PRE_PMD:
		ret = snd_soc_dai_digital_mute(sink, 1,
					       SNDRV_PCM_STREAM_PLAYBACK);
		if (ret != 0 && ret != -ENOTSUPP)
			dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
		ret = 0;

		source->active--;
		if (source->driver->ops->shutdown) {
			substream.stream = SNDRV_PCM_STREAM_CAPTURE;
			source->driver->ops->shutdown(&substream, source);
		}

		sink->active--;
		if (sink->driver->ops->shutdown) {
			substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
			sink->driver->ops->shutdown(&substream, sink);
		}
		break;

	default:
		WARN(1, "Unknown event %d\n", event);
		ret = -EINVAL;
	}

out:
	kfree(runtime);
	kfree(params);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 425 59.69% 3 25.00%
Jeeja KP 184 25.84% 1 8.33%
Nicolin Chen 47 6.60% 1 8.33%
Lars-Peter Clausen 24 3.37% 1 8.33%
Takashi Iwai 18 2.53% 2 16.67%
Benoît Cousson 4 0.56% 1 8.33%
Nikesh Oswal 4 0.56% 1 8.33%
Sudip Mukherjee 3 0.42% 1 8.33%
Liam Girdwood 3 0.42% 1 8.33%
Total 712 100.00% 12 100.00%



static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol,
			  struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);

	ucontrol->value.enumerated.item[0] = w->params_select;

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Nikesh Oswal 32 72.73% 1 33.33%
Mark Brown 10 22.73% 1 33.33%
Takashi Iwai 2 4.55% 1 33.33%
Total 44 100.00% 3 100.00%



static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol,
			  struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);

	/* Can't change the config when widget is already powered */
	if (w->power)
		return -EBUSY;

	if (ucontrol->value.enumerated.item[0] == w->params_select)
		return 0;

	if (ucontrol->value.enumerated.item[0] >= w->num_params)
		return -EINVAL;

	w->params_select = ucontrol->value.enumerated.item[0];

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Nikesh Oswal 78 81.25% 1 33.33%
Mark Brown 12 12.50% 1 33.33%
Takashi Iwai 6 6.25% 1 33.33%
Total 96 100.00% 3 100.00%


static void

snd_soc_dapm_free_kcontrol(struct snd_soc_card *card,
			unsigned long *private_value,
			int num_params,
			const char **w_param_text)
{
	int count;

	devm_kfree(card->dev, (void *)*private_value);
	for (count = 0 ; count < num_params; count++)
		devm_kfree(card->dev, (void *)w_param_text[count]);
	devm_kfree(card->dev, w_param_text);
}

Contributors
Person Tokens Prop Commits CommitProp
Anish Kumar 63 78.75% 1 33.33%
Nikesh Oswal 16 20.00% 1 33.33%
Arnd Bergmann 1 1.25% 1 33.33%
Total 80 100.00% 3 100.00%


static struct snd_kcontrol_new *

snd_soc_dapm_alloc_kcontrol(struct snd_soc_card *card,
			char *link_name,
			const struct snd_soc_pcm_stream *params,
			int num_params, const char **w_param_text,
			unsigned long *private_value)
{
	struct soc_enum w_param_enum[] = {
		SOC_ENUM_SINGLE(0, 0, 0, NULL),
        };
	struct snd_kcontrol_new kcontrol_dai_link[] = {
		SOC_ENUM_EXT(NULL, w_param_enum[0],
			     snd_soc_dapm_dai_link_get,
			     snd_soc_dapm_dai_link_put),
        };
	struct snd_kcontrol_new *kcontrol_news;
	const struct snd_soc_pcm_stream *config = params;
	int count;

	for (count = 0 ; count < num_params; count++) {
		if (!config->stream_name) {
			dev_warn(card->dapm.dev,
				"ASoC: anonymous config %d for dai link %s\n",
				count, link_name);
			w_param_text[count] =
				devm_kasprintf(card->dev, GFP_KERNEL,
					       "Anonymous Configuration %d",
					       count);
		} else {
			w_param_text[count] = devm_kmemdup(card->dev,
						config->stream_name,
						strlen(config->stream_name) + 1,
						GFP_KERNEL);
		}
		if (!w_param_text[count])
			goto outfree_w_param;
		config++;
	}

	w_param_enum[0].items = num_params;
	w_param_enum[0].texts = w_param_text;

	*private_value =
		(unsigned long) devm_kmemdup(card->dev,
			(void *)(kcontrol_dai_link[0].private_value),
			sizeof(struct soc_enum), GFP_KERNEL);
	if (!*private_value) {
		dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
			link_name);
		goto outfree_w_param;
	}
	kcontrol_dai_link[0].private_value = *private_value;
	/* duplicate kcontrol_dai_link on heap so that memory persists */
	kcontrol_news = devm_kmemdup(card->dev, &kcontrol_dai_link[0],
					sizeof(struct snd_kcontrol_new),
					GFP_KERNEL);
	if (!kcontrol_news) {
		dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
			link_name);
		goto outfree_w_param;
	}
	return kcontrol_news;

outfree_w_param:
	snd_soc_dapm_free_kcontrol(card, private_value, num_params, w_param_text);
	return NULL;
}

Contributors
Person Tokens Prop Commits CommitProp
Nikesh Oswal 181 52.92% 1 25.00%
Anish Kumar 137 40.06% 1 25.00%
Mark Brown 18 5.26% 1 25.00%
Charles Keepax 6 1.75% 1 25.00%
Total 342 100.00% 4 100.00%



int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
			 const struct snd_soc_pcm_stream *params,
			 unsigned int num_params,
			 struct snd_soc_dapm_widget *source,
			 struct snd_soc_dapm_widget *sink)
{
	struct snd_soc_dapm_widget template;
	struct snd_soc_dapm_widget *w;
	const char **w_param_text;
	unsigned long private_value;
	char *link_name;
	int ret;

	link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s",
				   source->name, sink->name);
	if (!link_name)
		return -ENOMEM;

	memset(&template, 0, sizeof(template));
	template.reg = SND_SOC_NOPM;
	template.id = snd_soc_dapm_dai_link;
	template.name = link_name;
	template.event = snd_soc_dai_link_event;
	template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
		SND_SOC_DAPM_PRE_PMD;
	template.kcontrol_news = NULL;

	/* allocate memory for control, only in case of multiple configs */
	if (num_params > 1) {
		w_param_text = devm_kcalloc(card->dev, num_params,
					sizeof(char *), GFP_KERNEL);
		if (!w_param_text) {
			ret = -ENOMEM;
			goto param_fail;
		}

		template.num_kcontrols = 1;
		template.kcontrol_news =
					snd_soc_dapm_alloc_kcontrol(card,
						link_name, params, num_params,
						w_param_text, &private_value);
		if (!template.kcontrol_news) {
			ret = -ENOMEM;
			goto param_fail;
		}
	} else {
		w_param_text = NULL;
	}
	dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);

	w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template);
	if (IS_ERR(w)) {
		ret = PTR_ERR(w);
		/* Do not nag about probe deferrals */
		if (ret != -EPROBE_DEFER)
			dev_err(card->dev,
				"ASoC: Failed to create %s widget (%d)\n",
				link_name, ret);
		goto outfree_kcontrol_news;
	}
	if (!w) {
		dev_err(card->dev, "ASoC: Failed to create %s widget\n",
			link_name);
		ret = -ENOMEM;
		goto outfree_kcontrol_news;
	}

	w->params = params;
	w->num_params = num_params;

	ret = snd_soc_dapm_add_path(&card->dapm, source, w, NULL, NULL);
	if (ret)
		goto outfree_w;
	return snd_soc_dapm_add_path(&card->dapm, w, sink, NULL, NULL);

outfree_w:
	devm_kfree(card->dev, w);
outfree_kcontrol_news:
	devm_kfree(card->dev, (void *)template.kcontrol_news);
	snd_soc_dapm_free_kcontrol(card, &private_value, num_params, w_param_text);
param_fail:
	devm_kfree(card->dev, link_name);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
Nikesh Oswal 145 33.72% 1 10.00%
Mark Brown 110 25.58% 1 10.00%
Anish Kumar 99 23.02% 2 20.00%
Linus Walleij 40 9.30% 1 10.00%
Lars-Peter Clausen 24 5.58% 1 10.00%
Arnd Bergmann 7 1.63% 1 10.00%
Liam Girdwood 3 0.70% 2 20.00%
Charles Keepax 2 0.47% 1 10.00%
Total 430 100.00% 10 100.00%



int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
				 struct snd_soc_dai *dai)
{
	struct snd_soc_dapm_widget template;
	struct snd_soc_dapm_widget *w;

	WARN_ON(dapm->dev != dai->dev);

	memset(&template, 0, sizeof(template));
	template.reg = SND_SOC_NOPM;

	if (dai->driver->playback.stream_name) {
		template.id = snd_soc_dapm_dai_in;
		template.name = dai->driver->playback.stream_name;
		template.sname = dai->driver->playback.stream_name;

		dev_dbg(dai->dev, "ASoC: adding %s widget\n",
			template.name);

		w = snd_soc_dapm_new_control_unlocked(dapm, &template);
		if (IS_ERR(w)) {
			int ret = PTR_ERR(w);

			/* Do not nag about probe deferrals */
			if (ret != -EPROBE_DEFER)
				dev_err(dapm->dev,
				"ASoC: Failed to create %s widget (%d)\n",
				dai->driver->playback.stream_name, ret);
			return ret;
		}
		if (!w) {
			dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
				dai->driver->playback.stream_name);
			return -ENOMEM;
		}

		w->priv = dai;
		dai->playback_widget = w;
	}

	if (dai->driver->capture.stream_name) {
		template.id = snd_soc_dapm_dai_out;
		template.name = dai->driver->capture.stream_name;
		template.sname = dai->driver->capture.stream_name;

		dev_dbg(dai->dev, "ASoC: adding %s widget\n",
			template.name);

		w = snd_soc_dapm_new_control_unlocked(dapm, &template);
		if (IS_ERR(w)) {
			int ret = PTR_ERR(w);

			/* Do not nag about probe deferrals */
			if (ret != -EPROBE_DEFER)
				dev_err(dapm->dev,
				"ASoC: Failed to create %s widget (%d)\n",
				dai->driver->playback.stream_name, ret);
			return ret;
		}
		if (!w) {
			dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
				dai->driver->capture.stream_name);
			return -ENOMEM;
		}

		w->priv = dai;
		dai->capture_widget = w;
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 202 55.96% 4 30.77%
Linus Walleij 94 26.04% 1 7.69%
Richard Purdie 39 10.80% 1 7.69%
Liam Girdwood 13 3.60% 4 30.77%
Takashi Iwai 8 2.22% 1 7.69%
Jarkko Nikula 5 1.39% 2 15.38%
Total 361 100.00% 13 100.00%



int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
{
	struct snd_soc_dapm_widget *dai_w, *w;
	struct snd_soc_dapm_widget *src, *sink;
	struct snd_soc_dai *dai;

	/* For each DAI widget... */
	list_for_each_entry(dai_w, &card->widgets, list) {
		switch (dai_w->id) {
		case snd_soc_dapm_dai_in:
		case snd_soc_dapm_dai_out:
			break;
		default:
			continue;
		}

		dai = dai_w->priv;

		/* ...find all widgets with the same stream and link them */
		list_for_each_entry(w, &card->widgets, list) {
			if (w->dapm != dai_w->dapm)
				continue;

			switch (w->id) {
			case snd_soc_dapm_dai_in:
			case snd_soc_dapm_dai_out:
				continue;
			default:
				break;
			}

			if (!w->sname || !strstr(w->sname, dai_w->sname))
				continue;

			if (dai_w->id == snd_soc_dapm_dai_in) {
				src = dai_w;
				sink = w;
			} else {
				src = w;
				sink = dai_w;
			}
			dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name);
			snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL);
		}
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 131 69.68% 2 28.57%
Lars-Peter Clausen 43 22.87% 3 42.86%
Russell King 11 5.85% 1 14.29%
Liam Girdwood 3 1.60% 1 14.29%
Total 188 100.00% 7 100.00%



static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
					  struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dapm_widget *sink, *source;
	int i;

	for (i = 0; i < rtd->num_codecs; i++) {
		struct snd_soc_dai *codec_dai = rtd->codec_dais[i];

		/* connect BE DAI playback if widgets are valid */
		if (codec_dai->playback_widget && cpu_dai->playback_widget) {
			source = cpu_dai->playback_widget;
			sink = codec_dai->playback_widget;
			dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
				cpu_dai->component->name, source->name,
				codec_dai->component->name, sink->name);

			snd_soc_dapm_add_path(&card->dapm, source, sink,
				NULL, NULL);
		}

		/* connect BE DAI capture if widgets are valid */
		if (codec_dai->capture_widget && cpu_dai->capture_widget) {
			source = codec_dai->capture_widget;
			sink = cpu_dai->capture_widget;
			dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
				codec_dai->component->name, source->name,
				cpu_dai->component->name, sink->name);

			snd_soc_dapm_add_path(&card->dapm, source, sink,
				NULL, NULL);
		}
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Liam Girdwood 150 73.17% 1 20.00%
Lars-Peter Clausen 33 16.10% 2 40.00%
Benoît Cousson 20 9.76% 1 20.00%
Arun Shamanna Lakshmi 2 0.98% 1 20.00%
Total 205 100.00% 5 100.00%



static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
	int event)
{
	struct snd_soc_dapm_widget *w;
	unsigned int ep;

	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
		w = dai->playback_widget;
	else
		w = dai->capture_widget;

	if (w) {
		dapm_mark_dirty(w, "stream event");

		if (w->id == snd_soc_dapm_dai_in) {
			ep = SND_SOC_DAPM_EP_SOURCE;
			dapm_widget_invalidate_input_paths(w);
		} else {
			ep = SND_SOC_DAPM_EP_SINK;
			dapm_widget_invalidate_output_paths(w);
		}

		switch (event) {
		case SND_SOC_DAPM_STREAM_START:
			w->active = 1;
			w->is_ep = ep;
			break;
		case SND_SOC_DAPM_STREAM_STOP:
			w->active = 0;
			w->is_ep = 0;
			break;
		case SND_SOC_DAPM_STREAM_SUSPEND:
		case SND_SOC_DAPM_STREAM_RESUME:
		case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
		case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
			break;
		}
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 60 42.86% 2 22.22%
Richard Purdie 32 22.86% 1 11.11%
Liam Girdwood 29 20.71% 2 22.22%
Mark Brown 19 13.57% 4 44.44%
Total 140 100.00% 9 100.00%



void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
{
	struct snd_soc_pcm_runtime *rtd;

	/* for each BE DAI link... */
	list_for_each_entry(rtd, &card->rtd_list, list)  {
		/*
                 * dynamic FE links have no fixed DAI mapping.
                 * CODEC<->CODEC links have no direct connection.
                 */
		if (rtd->dai_link->dynamic || rtd->dai_link->params)
			continue;

		dapm_connect_dai_link_widgets(card, rtd);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Benoît Cousson 41 83.67% 1 50.00%
Mengdong Lin 8 16.33% 1 50.00%
Total 49 100.00% 2 100.00%



static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
	int event)
{
	int i;

	soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event);
	for (i = 0; i < rtd->num_codecs; i++)
		soc_dapm_dai_stream_event(rtd->codec_dais[i], stream, event);

	dapm_power_widgets(rtd->card, event);
}

Contributors
Person Tokens Prop Commits CommitProp
Lars-Peter Clausen 30 43.48% 1 14.29%
Benoît Cousson 22 31.88% 1 14.29%
Liam Girdwood 14 20.29% 3 42.86%
Richard Purdie 2 2.90% 1 14.29%
Eero Nurkkala 1 1.45% 1 14.29%
Total 69 100.00% 7 100.00%

/**
 * snd_soc_dapm_stream_event - send a stream event to the dapm core
 * @rtd: PCM runtime data
 * @stream: stream name
 * @event: stream event
 *
 * Sends a stream event to the dapm core. The core then makes any
 * necessary widget power changes.
 *
 * Returns 0 for success else error.
 */


void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
			      int event)
{
	struct snd_soc_card *card = rtd->card;

	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
	soc_dapm_stream_event(rtd, stream, event);
	mutex_unlock(&card->dapm_mutex);
}

Contributors
Person Tokens Prop Commits CommitProp
Liam Girdwood 40 76.92% 4 57.14%
Richard Purdie 6 11.54% 1 14.29%
Eero Nurkkala 5 9.62% 1 14.29%
Mark Brown 1 1.92% 1 14.29%
Total 52 100.00% 7 100.00%

/**
 * snd_soc_dapm_enable_pin_unlocked - enable pin.
 * @dapm: DAPM context
 * @pin: pin name
 *
 * Enables input/output pin and its parents or children widgets iff there is
 * a valid audio route and active audio stream.
 *
 * Requires external locking.
 *
 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
 * do any widget power switching.
 */


int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
				   const char *pin)
{
	return snd_soc_dapm_set_pin(dapm, pin, 1);
}
Contributors
Person Tokens Prop Commits CommitProp
Charles Keepax 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);

/**
 * snd_soc_dapm_enable_pin - enable pin.
 * @dapm: DAPM context
 * @pin: pin name
 *
 * Enables input/output pin and its parents or children widgets iff there is
 * a valid audio route and active audio stream.
 *
 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
 * do any widget power switching.
 */


int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
{
	int ret;

	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);

	ret = snd_soc_dapm_set_pin(dapm, pin, 1);

	mutex_unlock(&dapm->card->dapm_mutex);

	return ret;
}
Contributors
Person Tokens Prop Commits CommitProp
Charles Keepax 30 55.56% 1 20.00%
Richard Purdie 13 24.07% 1 20.00%
Liam Girdwood 10 18.52% 2 40.00%
Mark Brown 1 1.85% 1 20.00%
Total 54 100.00% 5 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);

/**
 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
 * @dapm: DAPM context
 * @pin: pin name
 *
 * Enables input/output pin regardless of any other state.  This is
 * intended for use with microphone bias supplies used in microphone
 * jack detection.
 *
 * Requires external locking.
 *
 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
 * do any widget power switching.
 */


int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
					 const char *pin)
{
	struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);

	if (!w) {
		dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
		return -EINVAL;
	}

	dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
	if (!w->connected) {
		/*
                 * w->force does not affect the number of input or output paths,
                 * so we only have to recheck if w->connected is changed
                 */
		dapm_widget_invalidate_input_paths(w);
		dapm_widget_invalidate_output_paths(w);
		w->connected = 1;
	}
	w->force = 1;
	dapm_mark_dirty(w, "force enable");

	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 67 63.21% 4 36.36%
Lars-Peter Clausen 29 27.36% 2 18.18%
Jarkko Nikula 5 4.72% 2 18.18%
Liam Girdwood 4 3.77% 2 18.18%
Charles Keepax 1 0.94% 1 9.09%
Total 106 100.00% 11 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);

/**
 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
 * @dapm: DAPM context
 * @pin: pin name
 *
 * Enables input/output pin regardless of any other state.  This is
 * intended for use with microphone bias supplies used in microphone
 * jack detection.
 *
 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
 * do any widget power switching.
 */


int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
				  const char *pin)
{
	int ret;

	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);

	ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);

	mutex_unlock(&dapm->card->dapm_mutex);

	return ret;
}
Contributors
Person Tokens Prop Commits CommitProp
Charles Keepax 51 98.08% 1 50.00%
Mark Brown 1 1.92% 1 50.00%
Total 52 100.00% 2 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);

/**
 * snd_soc_dapm_disable_pin_unlocked - disable pin.
 * @dapm: DAPM context
 * @pin: pin name
 *
 * Disables input/output pin and its parents or children widgets.
 *
 * Requires external locking.
 *
 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
 * do any widget power switching.
 */


int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
				    const char *pin)
{
	return snd_soc_dapm_set_pin(dapm, pin, 0);
}
Contributors
Person Tokens Prop Commits CommitProp
Charles Keepax 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);

/**
 * snd_soc_dapm_disable_pin - disable pin.
 * @dapm: DAPM context
 * @pin: pin name
 *
 * Disables input/output pin and its parents or children widgets.
 *
 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
 * do any widget power switching.
 */


int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
			     const char *pin)
{
	int ret;

	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);

	ret = snd_soc_dapm_set_pin(dapm, pin, 0);

	mutex_unlock(&dapm->card->dapm_mutex);

	return ret;
}
Contributors
Person Tokens Prop Commits CommitProp
Charles Keepax 30 55.56% 1 16.67%
Liam Girdwood 20 37.04% 2 33.33%
Richard Purdie 2 3.70% 1 16.67%
Mark Brown 2 3.70% 2 33.33%
Total 54 100.00% 6 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);

/**
 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
 * @dapm: DAPM context
 * @pin: pin name
 *
 * Marks the specified pin as being not connected, disabling it along
 * any parent or child widgets.  At present this is identical to
 * snd_soc_dapm_disable_pin() but in future it will be extended to do
 * additional things such as disabling controls which only affect
 * paths through the pin.
 *
 * Requires external locking.
 *
 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
 * do any widget power switching.
 */


int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
			       const char *pin)
{
	return snd_soc_dapm_set_pin(dapm, pin, 0);
}
Contributors
Person Tokens Prop Commits CommitProp
Charles Keepax 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);

/**
 * snd_soc_dapm_nc_pin - permanently disable pin.
 * @dapm: DAPM context
 * @pin: pin name
 *
 * Marks the specified pin as being not connected, disabling it along
 * any parent or child widgets.  At present this is identical to
 * snd_soc_dapm_disable_pin() but in future it will be extended to do
 * additional things such as disabling controls which only affect
 * paths through the pin.
 *
 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
 * do any widget power switching.
 */


int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
{
	int ret;

	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);

	ret = snd_soc_dapm_set_pin(dapm, pin, 0);

	mutex_unlock(&dapm->card->dapm_mutex);

	return ret;
}
Contributors
Person Tokens Prop Commits CommitProp
Charles Keepax 30 55.56% 1 25.00%
Mark Brown 21 38.89% 2 50.00%
Liam Girdwood 3 5.56% 1 25.00%
Total 54 100.00% 4 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);

/**
 * snd_soc_dapm_get_pin_status - get audio pin status
 * @dapm: DAPM context
 * @pin: audio signal pin endpoint (or start point)
 *
 * Get audio pin status - connected or disconnected.
 *
 * Returns 1 for connected otherwise 0.
 */


int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
				const char *pin)
{
	struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);

	if (w)
		return w->connected;

	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
Graeme Gregory 19 46.34% 1 14.29%
Stephen Warren 11 26.83% 1 14.29%
Liam Girdwood 5 12.20% 2 28.57%
Lars-Peter Clausen 4 9.76% 1 14.29%
Mark Brown 1 2.44% 1 14.29%
Jarkko Nikula 1 2.44% 1 14.29%
Total 41 100.00% 7 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);

/**
 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
 * @dapm: DAPM context
 * @pin: audio signal pin endpoint (or start point)
 *
 * Mark the given endpoint or pin as ignoring suspend.  When the
 * system is disabled a path between two endpoints flagged as ignoring
 * suspend will not be disabled.  The path must already be enabled via
 * normal means at suspend time, it will not be turned on if it was not
 * already enabled.
 */


int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
				const char *pin)
{
	struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);

	if (!w) {
		dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
		return -EINVAL;
	}

	w->ignore_suspend = 1;

	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 34 56.67% 1 16.67%
Lars-Peter Clausen 16 26.67% 1 16.67%
Jarkko Nikula 7 11.67% 2 33.33%
Liam Girdwood 3 5.00% 2 33.33%
Total 60 100.00% 6 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);

/**
 * snd_soc_dapm_free - free dapm resources
 * @dapm: DAPM context
 *
 * Free all dapm widgets and resources.
 */


void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
{
	dapm_debugfs_cleanup(dapm);
	dapm_free_widgets(dapm);
	list_del(&dapm->list);
}
Contributors
Person Tokens Prop Commits CommitProp
Richard Purdie 10 35.71% 1 20.00%
Jarkko Nikula 8 28.57% 1 20.00%
Liam Girdwood 5 17.86% 2 40.00%
Lars-Peter Clausen 5 17.86% 1 20.00%
Total 28 100.00% 5 100.00%

EXPORT_SYMBOL_GPL(snd_soc_dapm_free);



static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
{
	struct snd_soc_card *card = dapm->card;
	struct snd_soc_dapm_widget *w;
	LIST_HEAD(down_list);
	int powerdown = 0;

	mutex_lock(&card->dapm_mutex);

	list_for_each_entry(w, &dapm->card->widgets, list) {
		if (w->dapm != dapm)
			continue;
		if (w->power) {
			dapm_seq_insert(w, &down_list, false);
			w->power = 0;
			powerdown = 1;
		}
	}

	/* If there were no widgets to power down we're already in
         * standby.
         */
	if (powerdown) {
		if (dapm->bias_level == SND_SOC_BIAS_ON)
			snd_soc_dapm_set_bias_level(dapm,
						    SND_SOC_BIAS_PREPARE);
		dapm_seq_run(card, &down_list, 0, false);
		if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
			snd_soc_dapm_set_bias_level(dapm,
						    SND_SOC_BIAS_STANDBY);
	}

	mutex_unlock(&card->dapm_mutex);
}

Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 102 69.39% 4 40.00%
Liam Girdwood 33 22.45% 3 30.00%
Jarkko Nikula 10 6.80% 1 10.00%
Xiang Xiao 1 0.68% 1 10.00%
Lars-Peter Clausen 1 0.68% 1 10.00%
Total 147 100.00% 10 100.00%

/*
 * snd_soc_dapm_shutdown - callback for system shutdown
 */


void snd_soc_dapm_shutdown(struct snd_soc_card *card)
{
	struct snd_soc_dapm_context *dapm;

	list_for_each_entry(dapm, &card->dapm_list, list) {
		if (dapm != &card->dapm) {
			soc_dapm_shutdown_dapm(dapm);
			if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
				snd_soc_dapm_set_bias_level(dapm,
							    SND_SOC_BIAS_OFF);
		}
	}

	soc_dapm_shutdown_dapm(&card->dapm);
	if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
		snd_soc_dapm_set_bias_level(&card->dapm,
					    SND_SOC_BIAS_OFF);
}

Contributors
Person Tokens Prop Commits CommitProp
Xiang Xiao 46 54.76% 2 33.33%
Liam Girdwood 24 28.57% 2 33.33%
Mark Brown 14 16.67% 2 33.33%
Total 84 100.00% 6 100.00%

/* Module information */
MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
MODULE_LICENSE("GPL");
Overall Contributors
Person Tokens Prop Commits CommitProp
Mark Brown 6366 34.02% 129 38.39%
Lars-Peter Clausen 4518 24.14% 75 22.32%
Richard Purdie 1371 7.33% 1 0.30%
Liam Girdwood 1264 6.76% 25 7.44%
Charles Keepax 797 4.26% 11 3.27%
Nikesh Oswal 620 3.31% 1 0.30%
Chen-Yu Tsai 481 2.57% 5 1.49%
Stephen Warren 474 2.53% 8 2.38%
Peter Ujfalusi 420 2.24% 4 1.19%
Anish Kumar 299 1.60% 2 0.60%
Linus Walleij 292 1.56% 2 0.60%
Jarkko Nikula 291 1.56% 8 2.38%
Jeeja KP 239 1.28% 3 0.89%
Srinivas Kandagatla 200 1.07% 1 0.30%
Benoît Cousson 165 0.88% 2 0.60%
Ola Lilja 139 0.74% 1 0.30%
Piotr Stankiewicz 105 0.56% 1 0.30%
Xiang Xiao 92 0.49% 2 0.60%
Takashi Iwai 77 0.41% 9 2.68%
Nicolin Chen 47 0.25% 1 0.30%
Jon Smirl 44 0.24% 3 0.89%
Nenghua Cao 42 0.22% 1 0.30%
Jyri Sarha 31 0.17% 1 0.30%
Mythri P K 29 0.15% 1 0.30%
Daniel Mack 28 0.15% 1 0.30%
Philipp Zabel 24 0.13% 1 0.30%
Ian Molton 23 0.12% 1 0.30%
Graeme Gregory 23 0.12% 1 0.30%
Arun Shamanna Lakshmi 21 0.11% 2 0.60%
Benoît Thébaudeau 18 0.10% 3 0.89%
Vinod Koul 16 0.09% 1 0.30%
Margarita Olaya Cabrera 16 0.09% 1 0.30%
Geert Uytterhoeven 15 0.08% 1 0.30%
Dan Carpenter 13 0.07% 1 0.30%
Arnd Bergmann 13 0.07% 3 0.89%
Dimitris Papastamos 12 0.06% 1 0.30%
Russell King 11 0.06% 1 0.30%
Subhransu S. Prusty 10 0.05% 2 0.60%
Mengdong Lin 8 0.04% 1 0.30%
Peter Meerwald-Stadler 8 0.04% 1 0.30%
Daniel Ribeiro 6 0.03% 1 0.30%
Eero Nurkkala 6 0.03% 1 0.30%
Troy Kisky 5 0.03% 1 0.30%
Ryo Tsutsui 5 0.03% 1 0.30%
KaiChieh Chuang 4 0.02% 1 0.30%
Marek Belisko 3 0.02% 1 0.30%
Sudip Mukherjee 3 0.02% 1 0.30%
Tejun Heo 3 0.02% 1 0.30%
Richard Zhao 3 0.02% 1 0.30%
Fabio Baltieri 2 0.01% 1 0.30%
Fabio Estevam 2 0.01% 1 0.30%
Stuart Henderson 2 0.01% 1 0.30%
Stephen Boyd 2 0.01% 1 0.30%
Rajan Vaja 1 0.01% 1 0.30%
Dan J Williams 1 0.01% 1 0.30%
Joe Perches 1 0.01% 1 0.30%
Jonathan Corbet 1 0.01% 1 0.30%
Total 18712 100.00% 336 100.00%
Directory: sound/soc

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.
Person	Tokens	Prop	Commits	CommitProp
Mark Brown	33	100.00%	1	100.00%
Total	33	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.17 sound/soc/soc-dapm.c

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