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Diffstat (limited to 'ANDROID_3.4.5/sound/soc/soc-dapm.c')
-rw-r--r--ANDROID_3.4.5/sound/soc/soc-dapm.c3288
1 files changed, 0 insertions, 3288 deletions
diff --git a/ANDROID_3.4.5/sound/soc/soc-dapm.c b/ANDROID_3.4.5/sound/soc/soc-dapm.c
deleted file mode 100644
index 6201fc54..00000000
--- a/ANDROID_3.4.5/sound/soc/soc-dapm.c
+++ /dev/null
@@ -1,3288 +0,0 @@
-/*
- * 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/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++;
-
-/* dapm power sequences - make this per codec in the future */
-static int dapm_up_seq[] = {
- [snd_soc_dapm_pre] = 0,
- [snd_soc_dapm_supply] = 1,
- [snd_soc_dapm_regulator_supply] = 1,
- [snd_soc_dapm_micbias] = 2,
- [snd_soc_dapm_dai] = 3,
- [snd_soc_dapm_aif_in] = 3,
- [snd_soc_dapm_aif_out] = 3,
- [snd_soc_dapm_mic] = 4,
- [snd_soc_dapm_mux] = 5,
- [snd_soc_dapm_virt_mux] = 5,
- [snd_soc_dapm_value_mux] = 5,
- [snd_soc_dapm_dac] = 6,
- [snd_soc_dapm_mixer] = 7,
- [snd_soc_dapm_mixer_named_ctl] = 7,
- [snd_soc_dapm_pga] = 8,
- [snd_soc_dapm_adc] = 9,
- [snd_soc_dapm_out_drv] = 10,
- [snd_soc_dapm_hp] = 10,
- [snd_soc_dapm_spk] = 10,
- [snd_soc_dapm_line] = 10,
- [snd_soc_dapm_post] = 11,
-};
-
-static int dapm_down_seq[] = {
- [snd_soc_dapm_pre] = 0,
- [snd_soc_dapm_adc] = 1,
- [snd_soc_dapm_hp] = 2,
- [snd_soc_dapm_spk] = 2,
- [snd_soc_dapm_line] = 2,
- [snd_soc_dapm_out_drv] = 2,
- [snd_soc_dapm_pga] = 4,
- [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_virt_mux] = 9,
- [snd_soc_dapm_value_mux] = 9,
- [snd_soc_dapm_aif_in] = 10,
- [snd_soc_dapm_aif_out] = 10,
- [snd_soc_dapm_dai] = 10,
- [snd_soc_dapm_regulator_supply] = 11,
- [snd_soc_dapm_supply] = 11,
- [snd_soc_dapm_post] = 12,
-};
-
-static void pop_wait(u32 pop_time)
-{
- if (pop_time)
- schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
-}
-
-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);
-}
-
-static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
-{
- return !list_empty(&w->dirty);
-}
-
-void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
-{
- 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);
- }
-}
-EXPORT_SYMBOL_GPL(dapm_mark_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);
-}
-
-/* get snd_card from DAPM context */
-static inline struct snd_card *dapm_get_snd_card(
- struct snd_soc_dapm_context *dapm)
-{
- if (dapm->codec)
- return dapm->codec->card->snd_card;
- else if (dapm->platform)
- return dapm->platform->card->snd_card;
- else
- BUG();
-
- /* unreachable */
- return NULL;
-}
-
-/* get soc_card from DAPM context */
-static inline struct snd_soc_card *dapm_get_soc_card(
- struct snd_soc_dapm_context *dapm)
-{
- if (dapm->codec)
- return dapm->codec->card;
- else if (dapm->platform)
- return dapm->platform->card;
- else
- BUG();
-
- /* unreachable */
- return NULL;
-}
-
-static void dapm_reset(struct snd_soc_card *card)
-{
- struct snd_soc_dapm_widget *w;
-
- memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
-
- list_for_each_entry(w, &card->widgets, list) {
- w->power_checked = false;
- w->inputs = -1;
- w->outputs = -1;
- }
-}
-
-static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg)
-{
- if (w->codec)
- return snd_soc_read(w->codec, reg);
- else if (w->platform)
- return snd_soc_platform_read(w->platform, reg);
-
- dev_err(w->dapm->dev, "no valid widget read method\n");
- return -1;
-}
-
-static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val)
-{
- if (w->codec)
- return snd_soc_write(w->codec, reg, val);
- else if (w->platform)
- return snd_soc_platform_write(w->platform, reg, val);
-
- dev_err(w->dapm->dev, "no valid widget write method\n");
- return -1;
-}
-
-static int soc_widget_update_bits(struct snd_soc_dapm_widget *w,
- unsigned short reg, unsigned int mask, unsigned int value)
-{
- bool change;
- unsigned int old, new;
- int ret;
-
- if (w->codec && w->codec->using_regmap) {
- ret = regmap_update_bits_check(w->codec->control_data,
- reg, mask, value, &change);
- if (ret != 0)
- return ret;
- } else {
- ret = soc_widget_read(w, reg);
- if (ret < 0)
- return ret;
-
- old = ret;
- new = (old & ~mask) | (value & mask);
- change = old != new;
- if (change) {
- ret = soc_widget_write(w, reg, new);
- if (ret < 0)
- return ret;
- }
- }
-
- return change;
-}
-
-/**
- * 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 (dapm->codec) {
- if (dapm->codec->driver->set_bias_level)
- ret = dapm->codec->driver->set_bias_level(dapm->codec,
- level);
- else
- dapm->bias_level = 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;
-}
-
-/* set up initial codec paths */
-static void dapm_set_path_status(struct snd_soc_dapm_widget *w,
- struct snd_soc_dapm_path *p, int i)
-{
- switch (w->id) {
- case snd_soc_dapm_switch:
- case snd_soc_dapm_mixer:
- case snd_soc_dapm_mixer_named_ctl: {
- int val;
- struct soc_mixer_control *mc = (struct soc_mixer_control *)
- w->kcontrol_news[i].private_value;
- unsigned int reg = mc->reg;
- unsigned int shift = mc->shift;
- int max = mc->max;
- unsigned int mask = (1 << fls(max)) - 1;
- unsigned int invert = mc->invert;
-
- val = soc_widget_read(w, reg);
- val = (val >> shift) & mask;
-
- if ((invert && !val) || (!invert && val))
- p->connect = 1;
- else
- p->connect = 0;
- }
- break;
- case snd_soc_dapm_mux: {
- struct soc_enum *e = (struct soc_enum *)
- w->kcontrol_news[i].private_value;
- int val, item, bitmask;
-
- for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
- ;
- val = soc_widget_read(w, e->reg);
- item = (val >> e->shift_l) & (bitmask - 1);
-
- p->connect = 0;
- for (i = 0; i < e->max; i++) {
- if (!(strcmp(p->name, e->texts[i])) && item == i)
- p->connect = 1;
- }
- }
- break;
- case snd_soc_dapm_virt_mux: {
- struct soc_enum *e = (struct soc_enum *)
- w->kcontrol_news[i].private_value;
-
- p->connect = 0;
- /* 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.
- */
- if (!strcmp(p->name, e->texts[0]))
- p->connect = 1;
- }
- break;
- case snd_soc_dapm_value_mux: {
- struct soc_enum *e = (struct soc_enum *)
- w->kcontrol_news[i].private_value;
- int val, item;
-
- val = soc_widget_read(w, e->reg);
- val = (val >> e->shift_l) & e->mask;
- for (item = 0; item < e->max; item++) {
- if (val == e->values[item])
- break;
- }
-
- p->connect = 0;
- for (i = 0; i < e->max; i++) {
- if (!(strcmp(p->name, e->texts[i])) && item == i)
- p->connect = 1;
- }
- }
- break;
- /* does not affect routing - always connected */
- case snd_soc_dapm_pga:
- case snd_soc_dapm_out_drv:
- case snd_soc_dapm_output:
- case snd_soc_dapm_adc:
- case snd_soc_dapm_input:
- case snd_soc_dapm_siggen:
- case snd_soc_dapm_dac:
- case snd_soc_dapm_micbias:
- case snd_soc_dapm_vmid:
- case snd_soc_dapm_supply:
- case snd_soc_dapm_regulator_supply:
- case snd_soc_dapm_aif_in:
- case snd_soc_dapm_aif_out:
- case snd_soc_dapm_dai:
- case snd_soc_dapm_hp:
- case snd_soc_dapm_mic:
- case snd_soc_dapm_spk:
- case snd_soc_dapm_line:
- p->connect = 1;
- break;
- /* does affect routing - dynamically connected */
- case snd_soc_dapm_pre:
- case snd_soc_dapm_post:
- p->connect = 0;
- break;
- }
-}
-
-/* connect mux widget to its interconnecting audio paths */
-static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
- struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
- struct snd_soc_dapm_path *path, const char *control_name,
- const struct snd_kcontrol_new *kcontrol)
-{
- struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
- int i;
-
- for (i = 0; i < e->max; i++) {
- if (!(strcmp(control_name, e->texts[i]))) {
- list_add(&path->list, &dapm->card->paths);
- list_add(&path->list_sink, &dest->sources);
- list_add(&path->list_source, &src->sinks);
- path->name = (char*)e->texts[i];
- dapm_set_path_status(dest, path, 0);
- return 0;
- }
- }
-
- return -ENODEV;
-}
-
-/* connect mixer widget to its interconnecting audio paths */
-static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
- struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
- struct snd_soc_dapm_path *path, const char *control_name)
-{
- int i;
-
- /* search for mixer kcontrol */
- for (i = 0; i < dest->num_kcontrols; i++) {
- if (!strcmp(control_name, dest->kcontrol_news[i].name)) {
- list_add(&path->list, &dapm->card->paths);
- list_add(&path->list_sink, &dest->sources);
- list_add(&path->list_source, &src->sinks);
- path->name = dest->kcontrol_news[i].name;
- dapm_set_path_status(dest, path, i);
- return 0;
- }
- }
- return -ENODEV;
-}
-
-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;
-}
-
-/* create new dapm mixer control */
-static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
-{
- struct snd_soc_dapm_context *dapm = w->dapm;
- int i, ret = 0;
- size_t name_len, prefix_len;
- struct snd_soc_dapm_path *path;
- struct snd_card *card = dapm->card->snd_card;
- const char *prefix;
- struct snd_soc_dapm_widget_list *wlist;
- size_t wlistsize;
-
- if (dapm->codec)
- prefix = dapm->codec->name_prefix;
- else
- prefix = NULL;
-
- if (prefix)
- prefix_len = strlen(prefix) + 1;
- else
- prefix_len = 0;
-
- /* add kcontrol */
- for (i = 0; i < w->num_kcontrols; i++) {
-
- /* match name */
- list_for_each_entry(path, &w->sources, list_sink) {
-
- /* mixer/mux paths name must match control name */
- if (path->name != (char *)w->kcontrol_news[i].name)
- continue;
-
- if (w->kcontrols[i]) {
- path->kcontrol = w->kcontrols[i];
- continue;
- }
-
- wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
- sizeof(struct snd_soc_dapm_widget *),
- wlist = kzalloc(wlistsize, GFP_KERNEL);
- if (wlist == NULL) {
- dev_err(dapm->dev,
- "asoc: can't allocate widget list for %s\n",
- w->name);
- return -ENOMEM;
- }
- wlist->num_widgets = 1;
- wlist->widgets[0] = w;
-
- /* add dapm control with long name.
- * for dapm_mixer this is the concatenation of the
- * mixer and kcontrol name.
- * for dapm_mixer_named_ctl this is simply the
- * kcontrol name.
- */
- name_len = strlen(w->kcontrol_news[i].name) + 1;
- if (w->id != snd_soc_dapm_mixer_named_ctl)
- name_len += 1 + strlen(w->name);
-
- path->long_name = kmalloc(name_len, GFP_KERNEL);
-
- if (path->long_name == NULL) {
- kfree(wlist);
- return -ENOMEM;
- }
-
- switch (w->id) {
- default:
- /* 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.
- */
- snprintf((char *)path->long_name, name_len,
- "%s %s", w->name + prefix_len,
- w->kcontrol_news[i].name);
- break;
- case snd_soc_dapm_mixer_named_ctl:
- snprintf((char *)path->long_name, name_len,
- "%s", w->kcontrol_news[i].name);
- break;
- }
-
- ((char *)path->long_name)[name_len - 1] = '\0';
-
- path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i],
- wlist, path->long_name,
- prefix);
- ret = snd_ctl_add(card, path->kcontrol);
- if (ret < 0) {
- dev_err(dapm->dev,
- "asoc: failed to add dapm kcontrol %s: %d\n",
- path->long_name, ret);
- kfree(wlist);
- kfree(path->long_name);
- path->long_name = NULL;
- return ret;
- }
- w->kcontrols[i] = path->kcontrol;
- }
- }
- return ret;
-}
-
-/* create new dapm mux control */
-static int dapm_new_mux(struct snd_soc_dapm_widget *w)
-{
- struct snd_soc_dapm_context *dapm = w->dapm;
- struct snd_soc_dapm_path *path = NULL;
- struct snd_kcontrol *kcontrol;
- struct snd_card *card = dapm->card->snd_card;
- const char *prefix;
- size_t prefix_len;
- int ret;
- struct snd_soc_dapm_widget_list *wlist;
- int shared, wlistentries;
- size_t wlistsize;
- const char *name;
-
- if (w->num_kcontrols != 1) {
- dev_err(dapm->dev,
- "asoc: mux %s has incorrect number of controls\n",
- w->name);
- return -EINVAL;
- }
-
- shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[0],
- &kcontrol);
- if (kcontrol) {
- wlist = kcontrol->private_data;
- wlistentries = wlist->num_widgets + 1;
- } else {
- wlist = NULL;
- wlistentries = 1;
- }
- wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
- wlistentries * sizeof(struct snd_soc_dapm_widget *),
- wlist = krealloc(wlist, wlistsize, GFP_KERNEL);
- if (wlist == NULL) {
- dev_err(dapm->dev,
- "asoc: can't allocate widget list for %s\n", w->name);
- return -ENOMEM;
- }
- wlist->num_widgets = wlistentries;
- wlist->widgets[wlistentries - 1] = w;
-
- if (!kcontrol) {
- if (dapm->codec)
- prefix = dapm->codec->name_prefix;
- else
- prefix = NULL;
-
- if (shared) {
- name = w->kcontrol_news[0].name;
- prefix_len = 0;
- } else {
- name = w->name;
- if (prefix)
- prefix_len = strlen(prefix) + 1;
- else
- prefix_len = 0;
- }
-
- /*
- * 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.
- */
- kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist,
- name + prefix_len, prefix);
- ret = snd_ctl_add(card, kcontrol);
- if (ret < 0) {
- dev_err(dapm->dev, "failed to add kcontrol %s: %d\n",
- w->name, ret);
- kfree(wlist);
- return ret;
- }
- }
-
- kcontrol->private_data = wlist;
-
- w->kcontrols[0] = kcontrol;
-
- list_for_each_entry(path, &w->sources, list_sink)
- path->kcontrol = kcontrol;
-
- return 0;
-}
-
-/* create new dapm volume control */
-static int dapm_new_pga(struct snd_soc_dapm_widget *w)
-{
- if (w->num_kcontrols)
- dev_err(w->dapm->dev,
- "asoc: PGA controls not supported: '%s'\n", w->name);
-
- return 0;
-}
-
-/* reset 'walked' bit for each dapm path */
-static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm)
-{
- struct snd_soc_dapm_path *p;
-
- list_for_each_entry(p, &dapm->card->paths, list)
- p->walked = 0;
-}
-
-/* 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, "%s ignoring suspend\n",
- widget->name);
- return widget->ignore_suspend;
- default:
- return 1;
- }
-}
-
-/*
- * Recursively check for a completed path to an active or physically connected
- * output widget. Returns number of complete paths.
- */
-static int is_connected_output_ep(struct snd_soc_dapm_widget *widget)
-{
- struct snd_soc_dapm_path *path;
- int con = 0;
-
- if (widget->outputs >= 0)
- return widget->outputs;
-
- DAPM_UPDATE_STAT(widget, path_checks);
-
- switch (widget->id) {
- case snd_soc_dapm_supply:
- case snd_soc_dapm_regulator_supply:
- return 0;
- default:
- break;
- }
-
- switch (widget->id) {
- case snd_soc_dapm_adc:
- case snd_soc_dapm_aif_out:
- case snd_soc_dapm_dai:
- if (widget->active) {
- widget->outputs = snd_soc_dapm_suspend_check(widget);
- return widget->outputs;
- }
- default:
- break;
- }
-
- if (widget->connected) {
- /* connected pin ? */
- if (widget->id == snd_soc_dapm_output && !widget->ext) {
- widget->outputs = snd_soc_dapm_suspend_check(widget);
- return widget->outputs;
- }
-
- /* connected jack or spk ? */
- if (widget->id == snd_soc_dapm_hp ||
- widget->id == snd_soc_dapm_spk ||
- (widget->id == snd_soc_dapm_line &&
- !list_empty(&widget->sources))) {
- widget->outputs = snd_soc_dapm_suspend_check(widget);
- return widget->outputs;
- }
- }
-
- list_for_each_entry(path, &widget->sinks, list_source) {
- DAPM_UPDATE_STAT(widget, neighbour_checks);
-
- if (path->weak)
- continue;
-
- if (path->walked)
- continue;
-
- if (path->sink && path->connect) {
- path->walked = 1;
- con += is_connected_output_ep(path->sink);
- }
- }
-
- widget->outputs = con;
-
- return con;
-}
-
-/*
- * Recursively check for a completed path to an active or physically connected
- * input widget. Returns number of complete paths.
- */
-static int is_connected_input_ep(struct snd_soc_dapm_widget *widget)
-{
- struct snd_soc_dapm_path *path;
- int con = 0;
-
- if (widget->inputs >= 0)
- return widget->inputs;
-
- DAPM_UPDATE_STAT(widget, path_checks);
-
- switch (widget->id) {
- case snd_soc_dapm_supply:
- case snd_soc_dapm_regulator_supply:
- return 0;
- default:
- break;
- }
-
- /* active stream ? */
- switch (widget->id) {
- case snd_soc_dapm_dac:
- case snd_soc_dapm_aif_in:
- case snd_soc_dapm_dai:
- if (widget->active) {
- widget->inputs = snd_soc_dapm_suspend_check(widget);
- return widget->inputs;
- }
- default:
- break;
- }
-
- if (widget->connected) {
- /* connected pin ? */
- if (widget->id == snd_soc_dapm_input && !widget->ext) {
- widget->inputs = snd_soc_dapm_suspend_check(widget);
- return widget->inputs;
- }
-
- /* connected VMID/Bias for lower pops */
- if (widget->id == snd_soc_dapm_vmid) {
- widget->inputs = snd_soc_dapm_suspend_check(widget);
- return widget->inputs;
- }
-
- /* connected jack ? */
- if (widget->id == snd_soc_dapm_mic ||
- (widget->id == snd_soc_dapm_line &&
- !list_empty(&widget->sinks))) {
- widget->inputs = snd_soc_dapm_suspend_check(widget);
- return widget->inputs;
- }
-
- /* signal generator */
- if (widget->id == snd_soc_dapm_siggen) {
- widget->inputs = snd_soc_dapm_suspend_check(widget);
- return widget->inputs;
- }
- }
-
- list_for_each_entry(path, &widget->sources, list_sink) {
- DAPM_UPDATE_STAT(widget, neighbour_checks);
-
- if (path->weak)
- continue;
-
- if (path->walked)
- continue;
-
- if (path->source && path->connect) {
- path->walked = 1;
- con += is_connected_input_ep(path->source);
- }
- }
-
- widget->inputs = con;
-
- return con;
-}
-
-/*
- * Handler for generic register modifier widget.
- */
-int dapm_reg_event(struct snd_soc_dapm_widget *w,
- struct snd_kcontrol *kcontrol, int event)
-{
- unsigned int val;
-
- if (SND_SOC_DAPM_EVENT_ON(event))
- val = w->on_val;
- else
- val = w->off_val;
-
- soc_widget_update_bits(w, -(w->reg + 1),
- w->mask << w->shift, val << w->shift);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(dapm_reg_event);
-
-/*
- * Handler for regulator supply widget.
- */
-int dapm_regulator_event(struct snd_soc_dapm_widget *w,
- struct snd_kcontrol *kcontrol, int event)
-{
- if (SND_SOC_DAPM_EVENT_ON(event))
- return regulator_enable(w->priv);
- else
- return regulator_disable_deferred(w->priv, w->shift);
-}
-EXPORT_SYMBOL_GPL(dapm_regulator_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;
-}
-
-/* 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);
- dapm_clear_walk(w->dapm);
- out = is_connected_output_ep(w);
- dapm_clear_walk(w->dapm);
- return out != 0 && in != 0;
-}
-
-static int dapm_dai_check_power(struct snd_soc_dapm_widget *w)
-{
- DAPM_UPDATE_STAT(w, power_checks);
-
- return w->active;
-}
-
-/* Check to see if an ADC has power */
-static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
-{
- int in;
-
- DAPM_UPDATE_STAT(w, power_checks);
-
- if (w->active) {
- in = is_connected_input_ep(w);
- dapm_clear_walk(w->dapm);
- return in != 0;
- } else {
- return dapm_generic_check_power(w);
- }
-}
-
-/* Check to see if a DAC has power */
-static int dapm_dac_check_power(struct snd_soc_dapm_widget *w)
-{
- int out;
-
- DAPM_UPDATE_STAT(w, power_checks);
-
- if (w->active) {
- out = is_connected_output_ep(w);
- dapm_clear_walk(w->dapm);
- return out != 0;
- } else {
- return dapm_generic_check_power(w);
- }
-}
-
-/* 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 */
- list_for_each_entry(path, &w->sinks, list_source) {
- DAPM_UPDATE_STAT(w, neighbour_checks);
-
- if (path->weak)
- continue;
-
- if (path->connected &&
- !path->connected(path->source, path->sink))
- continue;
-
- if (!path->sink)
- continue;
-
- if (dapm_widget_power_check(path->sink))
- return 1;
- }
-
- dapm_clear_walk(w->dapm);
-
- return 0;
-}
-
-static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
-{
- return 1;
-}
-
-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;
-}
-
-/* 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);
-}
-
-static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm,
- struct snd_soc_dapm_widget *w, int event)
-{
- struct snd_soc_card *card = dapm->card;
- 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;
- default:
- BUG();
- return;
- }
-
- if (w->power != power)
- return;
-
- if (w->event && (w->event_flags & event)) {
- pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n",
- w->name, ev_name);
- 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)
- pr_err("%s: %s event failed: %d\n",
- ev_name, w->name, ret);
- }
-}
-
-/* Apply the coalesced changes from a DAPM sequence */
-static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm,
- struct list_head *pending)
-{
- struct snd_soc_card *card = dapm->card;
- struct snd_soc_dapm_widget *w;
- int reg, power;
- unsigned int value = 0;
- unsigned int mask = 0;
- unsigned int cur_mask;
-
- reg = list_first_entry(pending, struct snd_soc_dapm_widget,
- power_list)->reg;
-
- list_for_each_entry(w, pending, power_list) {
- cur_mask = 1 << w->shift;
- BUG_ON(reg != w->reg);
-
- if (w->invert)
- power = !w->power;
- else
- power = w->power;
-
- mask |= cur_mask;
- if (power)
- value |= cur_mask;
-
- 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(dapm, w, SND_SOC_DAPM_PRE_PMU);
- dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD);
- }
-
- if (reg >= 0) {
- /* Any widget will do, they should all be updating the
- * same register.
- */
- w = list_first_entry(pending, struct snd_soc_dapm_widget,
- power_list);
-
- 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_widget_update_bits(w, reg, mask, value);
- }
-
- list_for_each_entry(w, pending, power_list) {
- dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU);
- dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD);
- }
-}
-
-/* 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_dapm_context *dapm,
- struct list_head *list, int event, bool power_up)
-{
- struct snd_soc_dapm_widget *w, *n;
- 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(cur_dapm, &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);
- }
-
- 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,
- "Failed to apply widget power: %d\n", ret);
- }
-
- if (!list_empty(&pending))
- dapm_seq_run_coalesced(cur_dapm, &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);
- }
-}
-
-static void dapm_widget_update(struct snd_soc_dapm_context *dapm)
-{
- struct snd_soc_dapm_update *update = dapm->update;
- struct snd_soc_dapm_widget *w;
- int ret;
-
- if (!update)
- return;
-
- w = update->widget;
-
- 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)
- pr_err("%s DAPM pre-event failed: %d\n",
- w->name, ret);
- }
-
- ret = snd_soc_update_bits(w->codec, update->reg, update->mask,
- update->val);
- if (ret < 0)
- pr_err("%s DAPM update failed: %d\n", w->name, ret);
-
- 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)
- pr_err("%s DAPM post-event failed: %d\n",
- w->name, ret);
- }
-}
-
-/* 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 be 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,
- "Failed to turn on bias: %d\n", ret);
- }
-
- /* Prepare for a STADDBY->ON or ON->STANDBY transition */
- if (d->bias_level != d->target_bias_level) {
- ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
- if (ret != 0)
- dev_err(d->dev,
- "Failed to prepare bias: %d\n", ret);
- }
-}
-
-/* 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, "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, "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, "Failed to apply active bias: %d\n",
- ret);
- }
-}
-
-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");
-}
-
-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.
- */
- list_for_each_entry(path, &w->sources, list_sink) {
- if (path->source) {
- dapm_widget_set_peer_power(path->source, power,
- path->connect);
- }
- }
- switch (w->id) {
- case snd_soc_dapm_supply:
- case snd_soc_dapm_regulator_supply:
- /* Supplies can't affect their outputs, only their inputs */
- break;
- default:
- list_for_each_entry(path, &w->sinks, list_source) {
- if (path->sink) {
- dapm_widget_set_peer_power(path->sink, power,
- path->connect);
- }
- }
- break;
- }
-
- if (power)
- dapm_seq_insert(w, up_list, true);
- else
- dapm_seq_insert(w, down_list, false);
-
- w->power = power;
-}
-
-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;
- }
-}
-
-/*
- * 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_dapm_context *dapm, int event)
-{
- struct snd_soc_card *card = dapm->card;
- struct snd_soc_dapm_widget *w;
- struct snd_soc_dapm_context *d;
- LIST_HEAD(up_list);
- LIST_HEAD(down_list);
- LIST_HEAD(async_domain);
- enum snd_soc_bias_level bias;
-
- trace_snd_soc_dapm_start(card);
-
- list_for_each_entry(d, &card->dapm_list, list) {
- if (d->n_widgets || d->codec == NULL) {
- if (d->idle_bias_off)
- 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->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:
- break;
- case snd_soc_dapm_supply:
- case snd_soc_dapm_regulator_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;
- }
- }
-
- }
-
- /* If there are no DAPM widgets then try to figure out power from the
- * event type.
- */
- if (!dapm->n_widgets) {
- switch (event) {
- case SND_SOC_DAPM_STREAM_START:
- case SND_SOC_DAPM_STREAM_RESUME:
- dapm->target_bias_level = SND_SOC_BIAS_ON;
- break;
- case SND_SOC_DAPM_STREAM_STOP:
- if (dapm->codec && dapm->codec->active)
- dapm->target_bias_level = SND_SOC_BIAS_ON;
- else
- dapm->target_bias_level = SND_SOC_BIAS_STANDBY;
- break;
- case SND_SOC_DAPM_STREAM_SUSPEND:
- dapm->target_bias_level = SND_SOC_BIAS_STANDBY;
- break;
- case SND_SOC_DAPM_STREAM_NOP:
- dapm->target_bias_level = dapm->bias_level;
- break;
- default:
- 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 (!d->idle_bias_off)
- d->target_bias_level = bias;
-
- trace_snd_soc_dapm_walk_done(card);
-
- /* Run all the bias changes in parallel */
- list_for_each_entry(d, &dapm->card->dapm_list, list)
- async_schedule_domain(dapm_pre_sequence_async, d,
- &async_domain);
- async_synchronize_full_domain(&async_domain);
-
- /* Power down widgets first; try to avoid amplifying pops. */
- dapm_seq_run(dapm, &down_list, event, false);
-
- dapm_widget_update(dapm);
-
- /* Now power up. */
- dapm_seq_run(dapm, &up_list, event, true);
-
- /* Run all the bias changes in parallel */
- list_for_each_entry(d, &dapm->card->dapm_list, list)
- async_schedule_domain(dapm_post_sequence_async, d,
- &async_domain);
- async_synchronize_full_domain(&async_domain);
-
- /* 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(dapm->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;
-}
-
-#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;
- 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;
-
- in = is_connected_input_ep(w);
- dapm_clear_walk(w->dapm);
- out = is_connected_output_ep(w);
- dapm_clear_walk(w->dapm);
-
- 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) bit %d",
- w->reg, w->reg, 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");
-
- list_for_each_entry(p, &w->sources, list_sink) {
- if (p->connected && !p->connected(w, p->sink))
- continue;
-
- if (p->connect)
- ret += snprintf(buf + ret, PAGE_SIZE - ret,
- " in \"%s\" \"%s\"\n",
- p->name ? p->name : "static",
- p->source->name);
- }
- list_for_each_entry(p, &w->sinks, list_source) {
- if (p->connected && !p->connected(w, p->sink))
- continue;
-
- if (p->connect)
- ret += snprintf(buf + ret, PAGE_SIZE - ret,
- " out \"%s\" \"%s\"\n",
- p->name ? p->name : "static",
- p->sink->name);
- }
-
- ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
-
- kfree(buf);
- return ret;
-}
-
-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:
- BUG();
- level = "Unknown\n";
- break;
- }
-
- return simple_read_from_buffer(user_buf, count, ppos, level,
- strlen(level));
-}
-
-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;
-
- dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
-
- if (!dapm->debugfs_dapm) {
- dev_warn(dapm->dev,
- "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");
-}
-
-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);
-}
-
-static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
-{
- debugfs_remove_recursive(dapm->debugfs_dapm);
-}
-
-#else
-void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
- struct dentry *parent)
-{
-}
-
-static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
-{
-}
-
-static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
-{
-}
-
-#endif
-
-/* test and update the power status of a mux widget */
-int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
- struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
-{
- struct snd_soc_dapm_path *path;
- int found = 0;
-
- if (widget->id != snd_soc_dapm_mux &&
- widget->id != snd_soc_dapm_virt_mux &&
- widget->id != snd_soc_dapm_value_mux)
- return -ENODEV;
-
- /* find dapm widget path assoc with kcontrol */
- list_for_each_entry(path, &widget->dapm->card->paths, list) {
- if (path->kcontrol != kcontrol)
- continue;
-
- if (!path->name || !e->texts[mux])
- continue;
-
- found = 1;
- /* we now need to match the string in the enum to the path */
- if (!(strcmp(path->name, e->texts[mux]))) {
- path->connect = 1; /* new connection */
- dapm_mark_dirty(path->source, "mux connection");
- } else {
- if (path->connect)
- dapm_mark_dirty(path->source,
- "mux disconnection");
- path->connect = 0; /* old connection must be powered down */
- }
- }
-
- if (found) {
- dapm_mark_dirty(widget, "mux change");
- dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
- }
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
-
-/* test and update the power status of a mixer or switch widget */
-int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
- struct snd_kcontrol *kcontrol, int connect)
-{
- struct snd_soc_dapm_path *path;
- int found = 0;
-
- if (widget->id != snd_soc_dapm_mixer &&
- widget->id != snd_soc_dapm_mixer_named_ctl &&
- widget->id != snd_soc_dapm_switch)
- return -ENODEV;
-
- /* find dapm widget path assoc with kcontrol */
- list_for_each_entry(path, &widget->dapm->card->paths, list) {
- if (path->kcontrol != kcontrol)
- continue;
-
- /* found, now check type */
- found = 1;
- path->connect = connect;
- dapm_mark_dirty(path->source, "mixer connection");
- }
-
- if (found) {
- dapm_mark_dirty(widget, "mixer update");
- dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
- }
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
-
-/* 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);
- struct snd_soc_codec *codec =rtd->codec;
- struct snd_soc_dapm_widget *w;
- int count = 0;
- char *state = "not set";
-
- list_for_each_entry(w, &codec->card->widgets, list) {
- if (w->dapm != &codec->dapm)
- continue;
-
- /* only display widgets that burnm 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:
- if (w->name)
- count += sprintf(buf + count, "%s: %s\n",
- w->name, w->power ? "On":"Off");
- break;
- default:
- break;
- }
- }
-
- switch (codec->dapm.bias_level) {
- 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;
-}
-
-static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
-
-int snd_soc_dapm_sys_add(struct device *dev)
-{
- return device_create_file(dev, &dev_attr_dapm_widget);
-}
-
-static void snd_soc_dapm_sys_remove(struct device *dev)
-{
- device_remove_file(dev, &dev_attr_dapm_widget);
-}
-
-/* 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;
- struct snd_soc_dapm_path *p, *next_p;
-
- list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
- if (w->dapm != dapm)
- continue;
- 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.
- */
- list_for_each_entry_safe(p, next_p, &w->sources, list_sink) {
- list_del(&p->list_sink);
- list_del(&p->list_source);
- list_del(&p->list);
- kfree(p->long_name);
- kfree(p);
- }
- list_for_each_entry_safe(p, next_p, &w->sinks, list_source) {
- list_del(&p->list_sink);
- list_del(&p->list_source);
- list_del(&p->list);
- kfree(p->long_name);
- kfree(p);
- }
- kfree(w->kcontrols);
- kfree(w->name);
- kfree(w);
- }
-}
-
-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;
-}
-
-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);
-
- if (!w) {
- dev_err(dapm->dev, "dapm: unknown pin %s\n", pin);
- return -EINVAL;
- }
-
- if (w->connected != status)
- dapm_mark_dirty(w, "pin configuration");
-
- w->connected = status;
- if (status == 0)
- w->force = 0;
-
- return 0;
-}
-
-/**
- * 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;
-
- /*
- * Suppress early reports (eg, jacks syncing their state) to avoid
- * silly DAPM runs during card startup.
- */
- if (!dapm->card || !dapm->card->instantiated)
- return 0;
-
- mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM);
- ret = dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);
- mutex_unlock(&dapm->card->dapm_mutex);
- return ret;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
-
-static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
- const struct snd_soc_dapm_route *route)
-{
- struct snd_soc_dapm_path *path;
- struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
- struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
- const char *sink;
- const char *control = route->control;
- const char *source;
- char prefixed_sink[80];
- char prefixed_source[80];
- int ret = 0;
-
- if (dapm->codec && dapm->codec->name_prefix) {
- snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
- dapm->codec->name_prefix, route->sink);
- sink = prefixed_sink;
- snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
- dapm->codec->name_prefix, route->source);
- source = prefixed_source;
- } else {
- sink = route->sink;
- source = route->source;
- }
-
- /*
- * 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;
- continue;
- }
- if (!wsource && !(strcmp(w->name, source))) {
- wtsource = w;
- if (w->dapm == dapm)
- wsource = w;
- }
- }
- /* use widget from another DAPM context if not found from this */
- if (!wsink)
- wsink = wtsink;
- if (!wsource)
- wsource = wtsource;
-
- if (wsource == NULL || wsink == NULL)
- return -ENODEV;
-
- path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
- if (!path)
- return -ENOMEM;
-
- path->source = wsource;
- path->sink = wsink;
- path->connected = route->connected;
- INIT_LIST_HEAD(&path->list);
- INIT_LIST_HEAD(&path->list_source);
- INIT_LIST_HEAD(&path->list_sink);
-
- /* check for external widgets */
- if (wsink->id == snd_soc_dapm_input) {
- if (wsource->id == snd_soc_dapm_micbias ||
- wsource->id == snd_soc_dapm_mic ||
- wsource->id == snd_soc_dapm_line ||
- wsource->id == snd_soc_dapm_output)
- wsink->ext = 1;
- }
- if (wsource->id == snd_soc_dapm_output) {
- if (wsink->id == snd_soc_dapm_spk ||
- wsink->id == snd_soc_dapm_hp ||
- wsink->id == snd_soc_dapm_line ||
- wsink->id == snd_soc_dapm_input)
- wsource->ext = 1;
- }
-
- /* connect static paths */
- if (control == NULL) {
- list_add(&path->list, &dapm->card->paths);
- list_add(&path->list_sink, &wsink->sources);
- list_add(&path->list_source, &wsource->sinks);
- path->connect = 1;
- return 0;
- }
-
- /* connect dynamic paths */
- switch (wsink->id) {
- case snd_soc_dapm_adc:
- case snd_soc_dapm_dac:
- case snd_soc_dapm_pga:
- case snd_soc_dapm_out_drv:
- case snd_soc_dapm_input:
- case snd_soc_dapm_output:
- case snd_soc_dapm_siggen:
- case snd_soc_dapm_micbias:
- case snd_soc_dapm_vmid:
- case snd_soc_dapm_pre:
- case snd_soc_dapm_post:
- case snd_soc_dapm_supply:
- case snd_soc_dapm_regulator_supply:
- case snd_soc_dapm_aif_in:
- case snd_soc_dapm_aif_out:
- case snd_soc_dapm_dai:
- list_add(&path->list, &dapm->card->paths);
- list_add(&path->list_sink, &wsink->sources);
- list_add(&path->list_source, &wsource->sinks);
- path->connect = 1;
- return 0;
- case snd_soc_dapm_mux:
- case snd_soc_dapm_virt_mux:
- case snd_soc_dapm_value_mux:
- ret = dapm_connect_mux(dapm, wsource, wsink, path, control,
- &wsink->kcontrol_news[0]);
- 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, wsource, wsink, path, control);
- if (ret != 0)
- goto err;
- break;
- case snd_soc_dapm_hp:
- case snd_soc_dapm_mic:
- case snd_soc_dapm_line:
- case snd_soc_dapm_spk:
- list_add(&path->list, &dapm->card->paths);
- list_add(&path->list_sink, &wsink->sources);
- list_add(&path->list_source, &wsource->sinks);
- path->connect = 0;
- return 0;
- }
- return 0;
-
-err:
- dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n",
- source, control, sink);
- kfree(path);
- return ret;
-}
-
-/**
- * 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, ret = 0;
-
- mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
- for (i = 0; i < num; i++) {
- ret = snd_soc_dapm_add_route(dapm, route);
- if (ret < 0) {
- dev_err(dapm->dev, "Failed to add route %s->%s\n",
- route->source, route->sink);
- break;
- }
- route++;
- }
- mutex_unlock(&dapm->card->dapm_mutex);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_add_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, "Unable to find source %s for weak route\n",
- route->source);
- return -ENODEV;
- }
-
- if (!sink) {
- dev_err(dapm->dev, "Unable to find sink %s for weak route\n",
- route->sink);
- return -ENODEV;
- }
-
- if (route->control || route->connected)
- dev_warn(dapm->dev, "Ignoring control for weak route %s->%s\n",
- route->source, route->sink);
-
- list_for_each_entry(path, &source->sinks, list_source) {
- if (path->sink == sink) {
- path->weak = 1;
- count++;
- }
- }
-
- if (count == 0)
- dev_err(dapm->dev, "No path found for weak route %s->%s\n",
- route->source, route->sink);
- if (count > 1)
- dev_warn(dapm->dev, "%d paths found for weak route %s->%s\n",
- count, route->source, route->sink);
-
- return 0;
-}
-
-/**
- * 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;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
-
-/**
- * snd_soc_dapm_new_widgets - add new dapm widgets
- * @dapm: DAPM context
- *
- * 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_dapm_context *dapm)
-{
- struct snd_soc_dapm_widget *w;
- unsigned int val;
-
- mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
-
- list_for_each_entry(w, &dapm->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(&dapm->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_virt_mux:
- case snd_soc_dapm_value_mux:
- dapm_new_mux(w);
- break;
- case snd_soc_dapm_pga:
- case snd_soc_dapm_out_drv:
- dapm_new_pga(w);
- break;
- default:
- break;
- }
-
- /* Read the initial power state from the device */
- if (w->reg >= 0) {
- val = soc_widget_read(w, w->reg);
- val &= 1 << w->shift;
- if (w->invert)
- val = !val;
-
- if (val)
- w->power = 1;
- }
-
- w->new = 1;
-
- dapm_mark_dirty(w, "new widget");
- dapm_debugfs_add_widget(w);
- }
-
- dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);
- mutex_unlock(&dapm->card->dapm_mutex);
- return 0;
-}
-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_widget_list *wlist = snd_kcontrol_chip(kcontrol);
- struct snd_soc_dapm_widget *widget = wlist->widgets[0];
- struct soc_mixer_control *mc =
- (struct soc_mixer_control *)kcontrol->private_value;
- unsigned int reg = mc->reg;
- unsigned int shift = mc->shift;
- unsigned int rshift = mc->rshift;
- int max = mc->max;
- unsigned int invert = mc->invert;
- unsigned int mask = (1 << fls(max)) - 1;
-
- ucontrol->value.integer.value[0] =
- (snd_soc_read(widget->codec, reg) >> shift) & mask;
- if (shift != rshift)
- ucontrol->value.integer.value[1] =
- (snd_soc_read(widget->codec, reg) >> rshift) & mask;
- if (invert) {
- ucontrol->value.integer.value[0] =
- max - ucontrol->value.integer.value[0];
- if (shift != rshift)
- ucontrol->value.integer.value[1] =
- max - ucontrol->value.integer.value[1];
- }
-
- return 0;
-}
-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_widget_list *wlist = snd_kcontrol_chip(kcontrol);
- struct snd_soc_dapm_widget *widget = wlist->widgets[0];
- struct snd_soc_codec *codec = widget->codec;
- struct snd_soc_card *card = codec->card;
- struct soc_mixer_control *mc =
- (struct soc_mixer_control *)kcontrol->private_value;
- unsigned int reg = mc->reg;
- unsigned int shift = mc->shift;
- int max = mc->max;
- unsigned int mask = (1 << fls(max)) - 1;
- unsigned int invert = mc->invert;
- unsigned int val;
- int connect, change;
- struct snd_soc_dapm_update update;
- int wi;
-
- val = (ucontrol->value.integer.value[0] & mask);
-
- if (invert)
- val = max - val;
- mask = mask << shift;
- val = val << shift;
-
- if (val)
- /* new connection */
- connect = invert ? 0 : 1;
- else
- /* old connection must be powered down */
- connect = invert ? 1 : 0;
-
- mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM);
-
- change = snd_soc_test_bits(widget->codec, reg, mask, val);
- if (change) {
- for (wi = 0; wi < wlist->num_widgets; wi++) {
- widget = wlist->widgets[wi];
-
- widget->value = val;
-
- update.kcontrol = kcontrol;
- update.widget = widget;
- update.reg = reg;
- update.mask = mask;
- update.val = val;
- widget->dapm->update = &update;
-
- snd_soc_dapm_mixer_update_power(widget, kcontrol, connect);
-
- widget->dapm->update = NULL;
- }
- }
-
- mutex_unlock(&card->dapm_mutex);
- return 0;
-}
-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_widget_list *wlist = snd_kcontrol_chip(kcontrol);
- struct snd_soc_dapm_widget *widget = wlist->widgets[0];
- struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
- unsigned int val, bitmask;
-
- for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
- ;
- val = snd_soc_read(widget->codec, e->reg);
- ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1);
- if (e->shift_l != e->shift_r)
- ucontrol->value.enumerated.item[1] =
- (val >> e->shift_r) & (bitmask - 1);
-
- return 0;
-}
-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_widget_list *wlist = snd_kcontrol_chip(kcontrol);
- struct snd_soc_dapm_widget *widget = wlist->widgets[0];
- struct snd_soc_codec *codec = widget->codec;
- struct snd_soc_card *card = codec->card;
- struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
- unsigned int val, mux, change;
- unsigned int mask, bitmask;
- struct snd_soc_dapm_update update;
- int wi;
-
- for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
- ;
- if (ucontrol->value.enumerated.item[0] > e->max - 1)
- return -EINVAL;
- mux = ucontrol->value.enumerated.item[0];
- val = mux << e->shift_l;
- mask = (bitmask - 1) << e->shift_l;
- if (e->shift_l != e->shift_r) {
- if (ucontrol->value.enumerated.item[1] > e->max - 1)
- return -EINVAL;
- val |= ucontrol->value.enumerated.item[1] << e->shift_r;
- mask |= (bitmask - 1) << e->shift_r;
- }
-
- mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM);
-
- change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
- if (change) {
- for (wi = 0; wi < wlist->num_widgets; wi++) {
- widget = wlist->widgets[wi];
-
- widget->value = val;
-
- update.kcontrol = kcontrol;
- update.widget = widget;
- update.reg = e->reg;
- update.mask = mask;
- update.val = val;
- widget->dapm->update = &update;
-
- snd_soc_dapm_mux_update_power(widget, kcontrol, mux, e);
-
- widget->dapm->update = NULL;
- }
- }
-
- mutex_unlock(&card->dapm_mutex);
- return change;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
-
-/**
- * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Returns 0 for success.
- */
-int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
- struct snd_soc_dapm_widget *widget = wlist->widgets[0];
-
- ucontrol->value.enumerated.item[0] = widget->value;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt);
-
-/**
- * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Returns 0 for success.
- */
-int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
- struct snd_soc_dapm_widget *widget = wlist->widgets[0];
- struct snd_soc_codec *codec = widget->codec;
- struct snd_soc_card *card = codec->card;
- struct soc_enum *e =
- (struct soc_enum *)kcontrol->private_value;
- int change;
- int ret = 0;
- int wi;
-
- if (ucontrol->value.enumerated.item[0] >= e->max)
- return -EINVAL;
-
- mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM);
-
- change = widget->value != ucontrol->value.enumerated.item[0];
- if (change) {
- for (wi = 0; wi < wlist->num_widgets; wi++) {
- widget = wlist->widgets[wi];
-
- widget->value = ucontrol->value.enumerated.item[0];
-
- snd_soc_dapm_mux_update_power(widget, kcontrol, widget->value, e);
- }
- }
-
- mutex_unlock(&card->dapm_mutex);
- return ret;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt);
-
-/**
- * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
- * callback
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Callback to get the value of a dapm semi enumerated double mixer control.
- *
- * Semi enumerated mixer: the enumerated items are referred as values. Can be
- * used for handling bitfield coded enumeration for example.
- *
- * Returns 0 for success.
- */
-int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
- struct snd_soc_dapm_widget *widget = wlist->widgets[0];
- struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
- unsigned int reg_val, val, mux;
-
- reg_val = snd_soc_read(widget->codec, e->reg);
- val = (reg_val >> e->shift_l) & e->mask;
- for (mux = 0; mux < e->max; mux++) {
- if (val == e->values[mux])
- break;
- }
- ucontrol->value.enumerated.item[0] = mux;
- if (e->shift_l != e->shift_r) {
- val = (reg_val >> e->shift_r) & e->mask;
- for (mux = 0; mux < e->max; mux++) {
- if (val == e->values[mux])
- break;
- }
- ucontrol->value.enumerated.item[1] = mux;
- }
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double);
-
-/**
- * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
- * callback
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Callback to set the value of a dapm semi enumerated double mixer control.
- *
- * Semi enumerated mixer: the enumerated items are referred as values. Can be
- * used for handling bitfield coded enumeration for example.
- *
- * Returns 0 for success.
- */
-int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
- struct snd_soc_dapm_widget *widget = wlist->widgets[0];
- struct snd_soc_codec *codec = widget->codec;
- struct snd_soc_card *card = codec->card;
- struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
- unsigned int val, mux, change;
- unsigned int mask;
- struct snd_soc_dapm_update update;
- int wi;
-
- if (ucontrol->value.enumerated.item[0] > e->max - 1)
- return -EINVAL;
- mux = ucontrol->value.enumerated.item[0];
- val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
- mask = e->mask << e->shift_l;
- if (e->shift_l != e->shift_r) {
- if (ucontrol->value.enumerated.item[1] > e->max - 1)
- return -EINVAL;
- val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
- mask |= e->mask << e->shift_r;
- }
-
- mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM);
-
- change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
- if (change) {
- for (wi = 0; wi < wlist->num_widgets; wi++) {
- widget = wlist->widgets[wi];
-
- widget->value = val;
-
- update.kcontrol = kcontrol;
- update.widget = widget;
- update.reg = e->reg;
- update.mask = mask;
- update.val = val;
- widget->dapm->update = &update;
-
- snd_soc_dapm_mux_update_power(widget, kcontrol, mux, e);
-
- widget->dapm->update = NULL;
- }
- }
-
- mutex_unlock(&card->dapm_mutex);
- return change;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_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;
-}
-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_PCM);
-
- ucontrol->value.integer.value[0] =
- snd_soc_dapm_get_pin_status(&card->dapm, pin);
-
- mutex_unlock(&card->dapm_mutex);
-
- return 0;
-}
-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;
-
- mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM);
-
- if (ucontrol->value.integer.value[0])
- snd_soc_dapm_enable_pin(&card->dapm, pin);
- else
- snd_soc_dapm_disable_pin(&card->dapm, pin);
-
- mutex_unlock(&card->dapm_mutex);
-
- snd_soc_dapm_sync(&card->dapm);
- return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
-
-static 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;
- size_t name_len;
- int ret;
-
- if ((w = dapm_cnew_widget(widget)) == NULL)
- return NULL;
-
- switch (w->id) {
- case snd_soc_dapm_regulator_supply:
- w->priv = devm_regulator_get(dapm->dev, w->name);
- if (IS_ERR(w->priv)) {
- ret = PTR_ERR(w->priv);
- dev_err(dapm->dev, "Failed to request %s: %d\n",
- w->name, ret);
- return NULL;
- }
- break;
- default:
- break;
- }
-
- name_len = strlen(widget->name) + 1;
- if (dapm->codec && dapm->codec->name_prefix)
- name_len += 1 + strlen(dapm->codec->name_prefix);
- w->name = kmalloc(name_len, GFP_KERNEL);
- if (w->name == NULL) {
- kfree(w);
- return NULL;
- }
- if (dapm->codec && dapm->codec->name_prefix)
- snprintf((char *)w->name, name_len, "%s %s",
- dapm->codec->name_prefix, widget->name);
- else
- snprintf((char *)w->name, name_len, "%s", widget->name);
-
- switch (w->id) {
- case snd_soc_dapm_switch:
- case snd_soc_dapm_mixer:
- case snd_soc_dapm_mixer_named_ctl:
- w->power_check = dapm_generic_check_power;
- break;
- case snd_soc_dapm_mux:
- case snd_soc_dapm_virt_mux:
- case snd_soc_dapm_value_mux:
- w->power_check = dapm_generic_check_power;
- break;
- case snd_soc_dapm_adc:
- case snd_soc_dapm_aif_out:
- w->power_check = dapm_adc_check_power;
- break;
- case snd_soc_dapm_dac:
- case snd_soc_dapm_aif_in:
- w->power_check = dapm_dac_check_power;
- break;
- case snd_soc_dapm_pga:
- case snd_soc_dapm_out_drv:
- case snd_soc_dapm_input:
- case snd_soc_dapm_output:
- case snd_soc_dapm_micbias:
- case snd_soc_dapm_spk:
- case snd_soc_dapm_hp:
- case snd_soc_dapm_mic:
- case snd_soc_dapm_line:
- w->power_check = dapm_generic_check_power;
- break;
- case snd_soc_dapm_supply:
- case snd_soc_dapm_regulator_supply:
- w->power_check = dapm_supply_check_power;
- break;
- case snd_soc_dapm_dai:
- w->power_check = dapm_dai_check_power;
- break;
- default:
- w->power_check = dapm_always_on_check_power;
- break;
- }
-
- dapm->n_widgets++;
- w->dapm = dapm;
- w->codec = dapm->codec;
- w->platform = dapm->platform;
- INIT_LIST_HEAD(&w->sources);
- INIT_LIST_HEAD(&w->sinks);
- INIT_LIST_HEAD(&w->list);
- INIT_LIST_HEAD(&w->dirty);
- list_add(&w->list, &dapm->card->widgets);
-
- /* machine layer set ups unconnected pins and insertions */
- w->connected = 1;
- return w;
-}
-
-/**
- * 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(dapm, widget);
- 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;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
-
-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;
- template.name = dai->driver->playback.stream_name;
- template.sname = dai->driver->playback.stream_name;
-
- dev_dbg(dai->dev, "adding %s widget\n",
- template.name);
-
- w = snd_soc_dapm_new_control(dapm, &template);
- if (!w) {
- dev_err(dapm->dev, "Failed to create %s widget\n",
- dai->driver->playback.stream_name);
- }
-
- w->priv = dai;
- dai->playback_widget = w;
- }
-
- if (dai->driver->capture.stream_name) {
- template.id = snd_soc_dapm_dai;
- template.name = dai->driver->capture.stream_name;
- template.sname = dai->driver->capture.stream_name;
-
- dev_dbg(dai->dev, "adding %s widget\n",
- template.name);
-
- w = snd_soc_dapm_new_control(dapm, &template);
- if (!w) {
- dev_err(dapm->dev, "Failed to create %s widget\n",
- dai->driver->capture.stream_name);
- }
-
- w->priv = dai;
- dai->capture_widget = w;
- }
-
- return 0;
-}
-
-int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
-{
- struct snd_soc_dapm_widget *dai_w, *w;
- struct snd_soc_dai *dai;
- struct snd_soc_dapm_route r;
-
- memset(&r, 0, sizeof(r));
-
- /* For each DAI widget... */
- list_for_each_entry(dai_w, &card->widgets, list) {
- if (dai_w->id != snd_soc_dapm_dai)
- 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;
-
- if (w->id == snd_soc_dapm_dai)
- continue;
-
- if (!w->sname)
- continue;
-
- if (dai->driver->playback.stream_name &&
- strstr(w->sname,
- dai->driver->playback.stream_name)) {
- r.source = dai->playback_widget->name;
- r.sink = w->name;
- dev_dbg(dai->dev, "%s -> %s\n",
- r.source, r.sink);
-
- snd_soc_dapm_add_route(w->dapm, &r);
- }
-
- if (dai->driver->capture.stream_name &&
- strstr(w->sname,
- dai->driver->capture.stream_name)) {
- r.source = w->name;
- r.sink = dai->capture_widget->name;
- dev_dbg(dai->dev, "%s -> %s\n",
- r.source, r.sink);
-
- snd_soc_dapm_add_route(w->dapm, &r);
- }
- }
- }
-
- return 0;
-}
-
-static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm,
- int stream, struct snd_soc_dai *dai,
- int event)
-{
- struct snd_soc_dapm_widget *w;
-
- if (stream == SNDRV_PCM_STREAM_PLAYBACK)
- w = dai->playback_widget;
- else
- w = dai->capture_widget;
-
- if (!w)
- return;
-
- dapm_mark_dirty(w, "stream event");
-
- switch (event) {
- case SND_SOC_DAPM_STREAM_START:
- w->active = 1;
- break;
- case SND_SOC_DAPM_STREAM_STOP:
- w->active = 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;
- }
-
- dapm_power_widgets(dapm, event);
-}
-
-/**
- * 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.
- */
-int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
- struct snd_soc_dai *dai, int event)
-{
- struct snd_soc_card *card = rtd->card;
-
- mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM);
- soc_dapm_stream_event(&card->dapm, stream, dai, event);
- mutex_unlock(&card->dapm_mutex);
- return 0;
-}
-
-/**
- * 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)
-{
- return snd_soc_dapm_set_pin(dapm, pin, 1);
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
-
-/**
- * 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)
-{
- struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
-
- if (!w) {
- dev_err(dapm->dev, "dapm: unknown pin %s\n", pin);
- return -EINVAL;
- }
-
- dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin);
- w->connected = 1;
- w->force = 1;
- dapm_mark_dirty(w, "force enable");
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
-
-/**
- * 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)
-{
- return snd_soc_dapm_set_pin(dapm, pin, 0);
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
-
-/**
- * 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)
-{
- return snd_soc_dapm_set_pin(dapm, pin, 0);
-}
-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;
-}
-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, "dapm: unknown pin %s\n", pin);
- return -EINVAL;
- }
-
- w->ignore_suspend = 1;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
-
-static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card,
- struct snd_soc_dapm_widget *w)
-{
- struct snd_soc_dapm_path *p;
-
- list_for_each_entry(p, &card->paths, list) {
- if ((p->source == w) || (p->sink == w)) {
- dev_dbg(card->dev,
- "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
- p->source->name, p->source->id, p->source->dapm,
- p->sink->name, p->sink->id, p->sink->dapm);
-
- /* Connected to something other than the codec */
- if (p->source->dapm != p->sink->dapm)
- return true;
- /*
- * Loopback connection from codec external pin to
- * codec external pin
- */
- if (p->sink->id == snd_soc_dapm_input) {
- switch (p->source->id) {
- case snd_soc_dapm_output:
- case snd_soc_dapm_micbias:
- return true;
- default:
- break;
- }
- }
- }
- }
-
- return false;
-}
-
-/**
- * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
- * @codec: The codec whose pins should be processed
- *
- * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
- * which are unused. Pins are used if they are connected externally to the
- * codec, whether that be to some other device, or a loop-back connection to
- * the codec itself.
- */
-void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec)
-{
- struct snd_soc_card *card = codec->card;
- struct snd_soc_dapm_context *dapm = &codec->dapm;
- struct snd_soc_dapm_widget *w;
-
- dev_dbg(codec->dev, "Auto NC: DAPMs: card:%p codec:%p\n",
- &card->dapm, &codec->dapm);
-
- list_for_each_entry(w, &card->widgets, list) {
- if (w->dapm != dapm)
- continue;
- switch (w->id) {
- case snd_soc_dapm_input:
- case snd_soc_dapm_output:
- case snd_soc_dapm_micbias:
- dev_dbg(codec->dev, "Auto NC: Checking widget %s\n",
- w->name);
- if (!snd_soc_dapm_widget_in_card_paths(card, w)) {
- dev_dbg(codec->dev,
- "... Not in map; disabling\n");
- snd_soc_dapm_nc_pin(dapm, w->name);
- }
- break;
- default:
- break;
- }
- }
-}
-
-/**
- * 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)
-{
- snd_soc_dapm_sys_remove(dapm->dev);
- dapm_debugfs_cleanup(dapm);
- dapm_free_widgets(dapm);
- list_del(&dapm->list);
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
-
-static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm)
-{
- struct snd_soc_dapm_widget *w;
- LIST_HEAD(down_list);
- int powerdown = 0;
-
- 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(dapm, &down_list, 0, false);
- if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
- snd_soc_dapm_set_bias_level(dapm,
- SND_SOC_BIAS_STANDBY);
- }
-}
-
-/*
- * snd_soc_dapm_shutdown - callback for system shutdown
- */
-void snd_soc_dapm_shutdown(struct snd_soc_card *card)
-{
- struct snd_soc_codec *codec;
-
- list_for_each_entry(codec, &card->codec_dev_list, card_list) {
- soc_dapm_shutdown_codec(&codec->dapm);
- if (codec->dapm.bias_level == SND_SOC_BIAS_STANDBY)
- snd_soc_dapm_set_bias_level(&codec->dapm,
- SND_SOC_BIAS_OFF);
- }
-}
-
-/* Module information */
-MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
-MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
-MODULE_LICENSE("GPL");