* soc-dapm.c -- ALSA SoC Dynamic Audio Power Management
*
* Copyright 2005 Wolfson Microelectronics PLC.
- * Author: Liam Girdwood
- * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com
+ * 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
* Features:
* o Changes power status of internal codec blocks depending on the
* dynamic configuration of codec internal audio paths and active
- * DAC's/ADC's.
+ * DACs/ADCs.
* o Platform power domain - can support external components i.e. amps and
* mic/meadphone insertion events.
* o Automatic Mic Bias support
#include <linux/bitops.h>
#include <linux/platform_device.h>
#include <linux/jiffies.h>
+#include <linux/debugfs.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/initval.h>
/* debug */
-#define DAPM_DEBUG 0
-#if DAPM_DEBUG
+#ifdef DEBUG
#define dump_dapm(codec, action) dbg_dump_dapm(codec, action)
-#define dbg(format, arg...) printk(format, ## arg)
#else
#define dump_dapm(codec, action)
-#define dbg(format, arg...)
-#endif
-
-#define POP_DEBUG 0
-#if POP_DEBUG
-#define POP_TIME 500 /* 500 msecs - change if pop debug is too fast */
-#define pop_wait(time) schedule_timeout_uninterruptible(msecs_to_jiffies(time))
-#define pop_dbg(format, arg...) printk(format, ## arg); pop_wait(POP_TIME)
-#else
-#define pop_dbg(format, arg...)
-#define pop_wait(time)
#endif
/* dapm power sequences - make this per codec in the future */
static int dapm_up_seq[] = {
- snd_soc_dapm_pre, snd_soc_dapm_micbias, snd_soc_dapm_mic,
- snd_soc_dapm_mux, snd_soc_dapm_dac, snd_soc_dapm_mixer, snd_soc_dapm_pga,
- snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, snd_soc_dapm_post
+ [snd_soc_dapm_pre] = 0,
+ [snd_soc_dapm_supply] = 1,
+ [snd_soc_dapm_micbias] = 2,
+ [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_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_hp] = 10,
+ [snd_soc_dapm_spk] = 10,
+ [snd_soc_dapm_post] = 11,
};
+
static int dapm_down_seq[] = {
- snd_soc_dapm_pre, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk,
- snd_soc_dapm_pga, snd_soc_dapm_mixer, snd_soc_dapm_dac, snd_soc_dapm_mic,
- snd_soc_dapm_micbias, snd_soc_dapm_mux, snd_soc_dapm_post
+ [snd_soc_dapm_pre] = 0,
+ [snd_soc_dapm_adc] = 1,
+ [snd_soc_dapm_hp] = 2,
+ [snd_soc_dapm_spk] = 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_value_mux] = 9,
+ [snd_soc_dapm_aif_in] = 10,
+ [snd_soc_dapm_aif_out] = 10,
+ [snd_soc_dapm_supply] = 11,
+ [snd_soc_dapm_post] = 12,
};
-static int dapm_status = 1;
-module_param(dapm_status, int, 0);
-MODULE_PARM_DESC(dapm_status, "enable DPM sysfs entries");
+static void pop_wait(u32 pop_time)
+{
+ if (pop_time)
+ schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
+}
+
+static void pop_dbg(u32 pop_time, const char *fmt, ...)
+{
+ va_list args;
+
+ va_start(args, fmt);
+
+ if (pop_time) {
+ vprintk(fmt, args);
+ pop_wait(pop_time);
+ }
+
+ va_end(args);
+}
/* create a new dapm widget */
static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
}
+/**
+ * snd_soc_dapm_set_bias_level - set the bias level for the system
+ * @socdev: audio device
+ * @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_device *socdev,
+ enum snd_soc_bias_level level)
+{
+ struct snd_soc_card *card = socdev->card;
+ struct snd_soc_codec *codec = socdev->card->codec;
+ int ret = 0;
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ dev_dbg(socdev->dev, "Setting full bias\n");
+ break;
+ case SND_SOC_BIAS_PREPARE:
+ dev_dbg(socdev->dev, "Setting bias prepare\n");
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ dev_dbg(socdev->dev, "Setting standby bias\n");
+ break;
+ case SND_SOC_BIAS_OFF:
+ dev_dbg(socdev->dev, "Setting bias off\n");
+ break;
+ default:
+ dev_err(socdev->dev, "Setting invalid bias %d\n", level);
+ return -EINVAL;
+ }
+
+ if (card->set_bias_level)
+ ret = card->set_bias_level(card, level);
+ if (ret == 0) {
+ if (codec->set_bias_level)
+ ret = codec->set_bias_level(codec, level);
+ else
+ codec->bias_level = 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:
+ case snd_soc_dapm_mixer_named_ctl: {
int val;
- int reg = w->kcontrols[i].private_value & 0xff;
- int shift = (w->kcontrols[i].private_value >> 8) & 0x0f;
- int mask = (w->kcontrols[i].private_value >> 16) & 0xff;
- int invert = (w->kcontrols[i].private_value >> 24) & 0x01;
+ struct soc_mixer_control *mc = (struct soc_mixer_control *)
+ w->kcontrols[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 = snd_soc_read(w->codec, reg);
val = (val >> shift) & mask;
struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value;
int val, item, bitmask;
- for (bitmask = 1; bitmask < e->mask; bitmask <<= 1)
+ for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
;
val = snd_soc_read(w->codec, e->reg);
item = (val >> e->shift_l) & (bitmask - 1);
p->connect = 0;
- for (i = 0; i < e->mask; i++) {
+ for (i = 0; i < e->max; i++) {
+ if (!(strcmp(p->name, e->texts[i])) && item == i)
+ p->connect = 1;
+ }
+ }
+ break;
+ case snd_soc_dapm_value_mux: {
+ struct soc_enum *e = (struct soc_enum *)
+ w->kcontrols[i].private_value;
+ int val, item;
+
+ val = snd_soc_read(w->codec, 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;
}
case snd_soc_dapm_dac:
case snd_soc_dapm_micbias:
case snd_soc_dapm_vmid:
+ case snd_soc_dapm_supply:
+ case snd_soc_dapm_aif_in:
+ case snd_soc_dapm_aif_out:
p->connect = 1;
break;
/* does effect routing - dynamically connected */
}
}
-/* connect mux widget to it's interconnecting audio paths */
+/* connect mux widget to its interconnecting audio paths */
static int dapm_connect_mux(struct snd_soc_codec *codec,
struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
struct snd_soc_dapm_path *path, const char *control_name,
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
int i;
- for (i = 0; i < e->mask; i++) {
+ for (i = 0; i < e->max; i++) {
if (!(strcmp(control_name, e->texts[i]))) {
list_add(&path->list, &codec->dapm_paths);
list_add(&path->list_sink, &dest->sources);
return -ENODEV;
}
-/* connect mixer widget to it's interconnecting audio paths */
+/* connect mixer widget to its interconnecting audio paths */
static int dapm_connect_mixer(struct snd_soc_codec *codec,
struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
struct snd_soc_dapm_path *path, const char *control_name)
static int dapm_update_bits(struct snd_soc_dapm_widget *widget)
{
int change, power;
- unsigned short old, new;
+ unsigned int old, new;
struct snd_soc_codec *codec = widget->codec;
/* check for valid widgets */
change = old != new;
if (change) {
- pop_dbg("pop test %s : %s in %d ms\n", widget->name,
- widget->power ? "on" : "off", POP_TIME);
+ pop_dbg(codec->pop_time, "pop test %s : %s in %d ms\n",
+ widget->name, widget->power ? "on" : "off",
+ codec->pop_time);
snd_soc_write(codec, widget->reg, new);
- pop_wait(POP_TIME);
+ pop_wait(codec->pop_time);
}
- dbg("reg %x old %x new %x change %d\n", widget->reg, old, new, change);
+ pr_debug("reg %x old %x new %x change %d\n", widget->reg,
+ old, new, change);
return change;
}
return 0;
if (widget->num_kcontrols && k) {
- int reg = k->private_value & 0xff;
- int shift = (k->private_value >> 8) & 0x0f;
- int mask = (k->private_value >> 16) & 0xff;
- int invert = (k->private_value >> 24) & 0x01;
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)k->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;
if (power) {
int i;
/* power up has happended, increase volume to last level */
if (invert) {
- for (i = mask; i > widget->saved_value; i--)
+ for (i = max; i > widget->saved_value; i--)
snd_soc_update_bits(widget->codec, reg, mask, i);
} else {
for (i = 0; i < widget->saved_value; i++)
struct snd_soc_dapm_widget *w)
{
int i, ret = 0;
- char name[32];
+ size_t name_len;
struct snd_soc_dapm_path *path;
/* add kcontrol */
if (path->name != (char*)w->kcontrols[i].name)
continue;
- /* add dapm control with long name */
- snprintf(name, 32, "%s %s", w->name, w->kcontrols[i].name);
- path->long_name = kstrdup (name, GFP_KERNEL);
+ /* 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->kcontrols[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)
return -ENOMEM;
+ switch (w->id) {
+ default:
+ snprintf(path->long_name, name_len, "%s %s",
+ w->name, w->kcontrols[i].name);
+ break;
+ case snd_soc_dapm_mixer_named_ctl:
+ snprintf(path->long_name, name_len, "%s",
+ w->kcontrols[i].name);
+ break;
+ }
+
+ path->long_name[name_len - 1] = '\0';
+
path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w,
path->long_name);
ret = snd_ctl_add(codec->card, path->kcontrol);
if (ret < 0) {
- printk(KERN_ERR "asoc: failed to add dapm kcontrol %s\n",
- path->long_name);
+ printk(KERN_ERR "asoc: failed to add dapm kcontrol %s: %d\n",
+ path->long_name,
+ ret);
kfree(path->long_name);
path->long_name = NULL;
return ret;
struct snd_soc_dapm_path *path;
int con = 0;
- if (widget->id == snd_soc_dapm_adc && widget->active)
- return 1;
+ if (widget->id == snd_soc_dapm_supply)
+ return 0;
+
+ switch (widget->id) {
+ case snd_soc_dapm_adc:
+ case snd_soc_dapm_aif_out:
+ if (widget->active)
+ return 1;
+ default:
+ break;
+ }
if (widget->connected) {
/* connected pin ? */
/* connected jack or spk ? */
if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk ||
- widget->id == snd_soc_dapm_line)
+ (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources)))
return 1;
}
struct snd_soc_dapm_path *path;
int con = 0;
+ if (widget->id == snd_soc_dapm_supply)
+ return 0;
+
/* active stream ? */
- if (widget->id == snd_soc_dapm_dac && widget->active)
- return 1;
+ switch (widget->id) {
+ case snd_soc_dapm_dac:
+ case snd_soc_dapm_aif_in:
+ if (widget->active)
+ return 1;
+ default:
+ break;
+ }
if (widget->connected) {
/* connected pin ? */
return 1;
/* connected jack ? */
- if (widget->id == snd_soc_dapm_mic || widget->id == snd_soc_dapm_line)
+ if (widget->id == snd_soc_dapm_mic ||
+ (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks)))
return 1;
}
return 0;
}
+EXPORT_SYMBOL_GPL(dapm_reg_event);
+
+/* Standard power change method, used to apply power changes to most
+ * widgets.
+ */
+static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w)
+{
+ int ret;
+
+ /* call any power change event handlers */
+ if (w->event)
+ pr_debug("power %s event for %s flags %x\n",
+ w->power ? "on" : "off",
+ w->name, w->event_flags);
+
+ /* power up pre event */
+ if (w->power && w->event &&
+ (w->event_flags & SND_SOC_DAPM_PRE_PMU)) {
+ ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU);
+ if (ret < 0)
+ return ret;
+ }
+
+ /* power down pre event */
+ if (!w->power && w->event &&
+ (w->event_flags & SND_SOC_DAPM_PRE_PMD)) {
+ ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD);
+ if (ret < 0)
+ return ret;
+ }
+
+ /* Lower PGA volume to reduce pops */
+ if (w->id == snd_soc_dapm_pga && !w->power)
+ dapm_set_pga(w, w->power);
+
+ dapm_update_bits(w);
+
+ /* Raise PGA volume to reduce pops */
+ if (w->id == snd_soc_dapm_pga && w->power)
+ dapm_set_pga(w, w->power);
+
+ /* power up post event */
+ if (w->power && w->event &&
+ (w->event_flags & SND_SOC_DAPM_POST_PMU)) {
+ ret = w->event(w,
+ NULL, SND_SOC_DAPM_POST_PMU);
+ if (ret < 0)
+ return ret;
+ }
+
+ /* power down post event */
+ if (!w->power && w->event &&
+ (w->event_flags & SND_SOC_DAPM_POST_PMD)) {
+ ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+/* 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;
+
+ in = is_connected_input_ep(w);
+ dapm_clear_walk(w->codec);
+ out = is_connected_output_ep(w);
+ dapm_clear_walk(w->codec);
+ return out != 0 && in != 0;
+}
+
+/* Check to see if an ADC has power */
+static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
+{
+ int in;
+
+ if (w->active) {
+ in = is_connected_input_ep(w);
+ dapm_clear_walk(w->codec);
+ 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;
+
+ if (w->active) {
+ out = is_connected_output_ep(w);
+ dapm_clear_walk(w->codec);
+ 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;
+ int power = 0;
+
+ /* Check if one of our outputs is connected */
+ list_for_each_entry(path, &w->sinks, list_source) {
+ if (path->connected &&
+ !path->connected(path->source, path->sink))
+ continue;
+
+ if (path->sink && path->sink->power_check &&
+ path->sink->power_check(path->sink)) {
+ power = 1;
+ break;
+ }
+ }
+
+ dapm_clear_walk(w->codec);
+
+ return power;
+}
+
+static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
+ struct snd_soc_dapm_widget *b,
+ int sort[])
+{
+ if (sort[a->id] != sort[b->id])
+ return sort[a->id] - sort[b->id];
+ if (a->reg != b->reg)
+ return a->reg - b->reg;
+
+ 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,
+ int sort[])
+{
+ struct snd_soc_dapm_widget *w;
+
+ list_for_each_entry(w, list, power_list)
+ if (dapm_seq_compare(new_widget, w, sort) < 0) {
+ list_add_tail(&new_widget->power_list, &w->power_list);
+ return;
+ }
+
+ list_add_tail(&new_widget->power_list, list);
+}
+
+/* Apply the coalesced changes from a DAPM sequence */
+static void dapm_seq_run_coalesced(struct snd_soc_codec *codec,
+ struct list_head *pending)
+{
+ struct snd_soc_dapm_widget *w;
+ int reg, power, ret;
+ 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(codec->pop_time,
+ "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
+ w->name, reg, value, mask);
+
+ /* power up pre event */
+ if (w->power && w->event &&
+ (w->event_flags & SND_SOC_DAPM_PRE_PMU)) {
+ pop_dbg(codec->pop_time, "pop test : %s PRE_PMU\n",
+ w->name);
+ ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU);
+ if (ret < 0)
+ pr_err("%s: pre event failed: %d\n",
+ w->name, ret);
+ }
+
+ /* power down pre event */
+ if (!w->power && w->event &&
+ (w->event_flags & SND_SOC_DAPM_PRE_PMD)) {
+ pop_dbg(codec->pop_time, "pop test : %s PRE_PMD\n",
+ w->name);
+ ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD);
+ if (ret < 0)
+ pr_err("%s: pre event failed: %d\n",
+ w->name, ret);
+ }
+
+ /* Lower PGA volume to reduce pops */
+ if (w->id == snd_soc_dapm_pga && !w->power)
+ dapm_set_pga(w, w->power);
+ }
+
+ if (reg >= 0) {
+ pop_dbg(codec->pop_time,
+ "pop test : Applying 0x%x/0x%x to %x in %dms\n",
+ value, mask, reg, codec->pop_time);
+ pop_wait(codec->pop_time);
+ snd_soc_update_bits(codec, reg, mask, value);
+ }
+
+ list_for_each_entry(w, pending, power_list) {
+ /* Raise PGA volume to reduce pops */
+ if (w->id == snd_soc_dapm_pga && w->power)
+ dapm_set_pga(w, w->power);
+
+ /* power up post event */
+ if (w->power && w->event &&
+ (w->event_flags & SND_SOC_DAPM_POST_PMU)) {
+ pop_dbg(codec->pop_time, "pop test : %s POST_PMU\n",
+ w->name);
+ ret = w->event(w,
+ NULL, SND_SOC_DAPM_POST_PMU);
+ if (ret < 0)
+ pr_err("%s: post event failed: %d\n",
+ w->name, ret);
+ }
+
+ /* power down post event */
+ if (!w->power && w->event &&
+ (w->event_flags & SND_SOC_DAPM_POST_PMD)) {
+ pop_dbg(codec->pop_time, "pop test : %s POST_PMD\n",
+ w->name);
+ ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD);
+ if (ret < 0)
+ pr_err("%s: post event failed: %d\n",
+ w->name, ret);
+ }
+ }
+}
+
+/* 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_codec *codec, struct list_head *list,
+ int event, int sort[])
+{
+ struct snd_soc_dapm_widget *w, *n;
+ LIST_HEAD(pending);
+ int cur_sort = -1;
+ int cur_reg = SND_SOC_NOPM;
+ int ret;
+
+ 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) {
+ if (!list_empty(&pending))
+ dapm_seq_run_coalesced(codec, &pending);
+
+ INIT_LIST_HEAD(&pending);
+ cur_sort = -1;
+ cur_reg = SND_SOC_NOPM;
+ }
+
+ 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;
+
+ case snd_soc_dapm_input:
+ case snd_soc_dapm_output:
+ case snd_soc_dapm_hp:
+ case snd_soc_dapm_mic:
+ case snd_soc_dapm_line:
+ case snd_soc_dapm_spk:
+ /* No register support currently */
+ ret = dapm_generic_apply_power(w);
+ break;
+
+ default:
+ /* Queue it up for application */
+ cur_sort = sort[w->id];
+ cur_reg = w->reg;
+ list_move(&w->power_list, &pending);
+ break;
+ }
+
+ if (ret < 0)
+ pr_err("Failed to apply widget power: %d\n",
+ ret);
+ }
+
+ if (!list_empty(&pending))
+ dapm_seq_run_coalesced(codec, &pending);
+}
/*
* Scan each dapm widget for complete audio path.
*/
static int dapm_power_widgets(struct snd_soc_codec *codec, int event)
{
+ struct snd_soc_device *socdev = codec->socdev;
struct snd_soc_dapm_widget *w;
- int in, out, i, c = 1, *seq = NULL, ret = 0, power_change, power;
-
- /* do we have a sequenced stream event */
- if (event == SND_SOC_DAPM_STREAM_START) {
- c = ARRAY_SIZE(dapm_up_seq);
- seq = dapm_up_seq;
- } else if (event == SND_SOC_DAPM_STREAM_STOP) {
- c = ARRAY_SIZE(dapm_down_seq);
- seq = dapm_down_seq;
- }
+ LIST_HEAD(up_list);
+ LIST_HEAD(down_list);
+ int ret = 0;
+ int power;
+ int sys_power = 0;
- for(i = 0; i < c; i++) {
- list_for_each_entry(w, &codec->dapm_widgets, list) {
+ /* Check which widgets we need to power and store them in
+ * lists indicating if they should be powered up or down.
+ */
+ list_for_each_entry(w, &codec->dapm_widgets, list) {
+ switch (w->id) {
+ case snd_soc_dapm_pre:
+ dapm_seq_insert(w, &down_list, dapm_down_seq);
+ break;
+ case snd_soc_dapm_post:
+ dapm_seq_insert(w, &up_list, dapm_up_seq);
+ break;
- /* is widget in stream order */
- if (seq && seq[i] && w->id != seq[i])
+ default:
+ if (!w->power_check)
continue;
- /* vmid - no action */
- if (w->id == snd_soc_dapm_vmid)
- continue;
+ power = w->power_check(w);
+ if (power)
+ sys_power = 1;
- /* active ADC */
- if (w->id == snd_soc_dapm_adc && w->active) {
- in = is_connected_input_ep(w);
- dapm_clear_walk(w->codec);
- w->power = (in != 0) ? 1 : 0;
- dapm_update_bits(w);
+ if (w->power == power)
continue;
- }
- /* active DAC */
- if (w->id == snd_soc_dapm_dac && w->active) {
- out = is_connected_output_ep(w);
- dapm_clear_walk(w->codec);
- w->power = (out != 0) ? 1 : 0;
- dapm_update_bits(w);
- continue;
- }
+ if (power)
+ dapm_seq_insert(w, &up_list, dapm_up_seq);
+ else
+ dapm_seq_insert(w, &down_list, dapm_down_seq);
- /* programmable gain/attenuation */
- if (w->id == snd_soc_dapm_pga) {
- int on;
- in = is_connected_input_ep(w);
- dapm_clear_walk(w->codec);
- out = is_connected_output_ep(w);
- dapm_clear_walk(w->codec);
- w->power = on = (out != 0 && in != 0) ? 1 : 0;
+ w->power = power;
+ break;
+ }
+ }
- if (!on)
- dapm_set_pga(w, on); /* lower volume to reduce pops */
- dapm_update_bits(w);
- if (on)
- dapm_set_pga(w, on); /* restore volume from zero */
+ /* If there are no DAPM widgets then try to figure out power from the
+ * event type.
+ */
+ if (list_empty(&codec->dapm_widgets)) {
+ switch (event) {
+ case SND_SOC_DAPM_STREAM_START:
+ case SND_SOC_DAPM_STREAM_RESUME:
+ sys_power = 1;
+ break;
+ case SND_SOC_DAPM_STREAM_NOP:
+ sys_power = codec->bias_level != SND_SOC_BIAS_STANDBY;
+ default:
+ break;
+ }
+ }
- continue;
- }
+ /* If we're changing to all on or all off then prepare */
+ if ((sys_power && codec->bias_level == SND_SOC_BIAS_STANDBY) ||
+ (!sys_power && codec->bias_level == SND_SOC_BIAS_ON)) {
+ ret = snd_soc_dapm_set_bias_level(socdev,
+ SND_SOC_BIAS_PREPARE);
+ if (ret != 0)
+ pr_err("Failed to prepare bias: %d\n", ret);
+ }
- /* pre and post event widgets */
- if (w->id == snd_soc_dapm_pre) {
- if (!w->event)
- continue;
-
- if (event == SND_SOC_DAPM_STREAM_START) {
- ret = w->event(w,
- NULL, SND_SOC_DAPM_PRE_PMU);
- if (ret < 0)
- return ret;
- } else if (event == SND_SOC_DAPM_STREAM_STOP) {
- ret = w->event(w,
- NULL, SND_SOC_DAPM_PRE_PMD);
- if (ret < 0)
- return ret;
- }
- continue;
- }
- if (w->id == snd_soc_dapm_post) {
- if (!w->event)
- continue;
-
- if (event == SND_SOC_DAPM_STREAM_START) {
- ret = w->event(w,
- NULL, SND_SOC_DAPM_POST_PMU);
- if (ret < 0)
- return ret;
- } else if (event == SND_SOC_DAPM_STREAM_STOP) {
- ret = w->event(w,
- NULL, SND_SOC_DAPM_POST_PMD);
- if (ret < 0)
- return ret;
- }
- continue;
- }
+ /* Power down widgets first; try to avoid amplifying pops. */
+ dapm_seq_run(codec, &down_list, event, dapm_down_seq);
- /* all other widgets */
- in = is_connected_input_ep(w);
- dapm_clear_walk(w->codec);
- out = is_connected_output_ep(w);
- dapm_clear_walk(w->codec);
- power = (out != 0 && in != 0) ? 1 : 0;
- power_change = (w->power == power) ? 0: 1;
- w->power = power;
+ /* Now power up. */
+ dapm_seq_run(codec, &up_list, event, dapm_up_seq);
- /* call any power change event handlers */
- if (power_change) {
- if (w->event) {
- dbg("power %s event for %s flags %x\n",
- w->power ? "on" : "off", w->name, w->event_flags);
- if (power) {
- /* power up event */
- if (w->event_flags & SND_SOC_DAPM_PRE_PMU) {
- ret = w->event(w,
- NULL, SND_SOC_DAPM_PRE_PMU);
- if (ret < 0)
- return ret;
- }
- dapm_update_bits(w);
- if (w->event_flags & SND_SOC_DAPM_POST_PMU){
- ret = w->event(w,
- NULL, SND_SOC_DAPM_POST_PMU);
- if (ret < 0)
- return ret;
- }
- } else {
- /* power down event */
- if (w->event_flags & SND_SOC_DAPM_PRE_PMD) {
- ret = w->event(w,
- NULL, SND_SOC_DAPM_PRE_PMD);
- if (ret < 0)
- return ret;
- }
- dapm_update_bits(w);
- if (w->event_flags & SND_SOC_DAPM_POST_PMD) {
- ret = w->event(w,
- NULL, SND_SOC_DAPM_POST_PMD);
- if (ret < 0)
- return ret;
- }
- }
- } else
- /* no event handler */
- dapm_update_bits(w);
- }
- }
+ /* If we just powered the last thing off drop to standby bias */
+ if (codec->bias_level == SND_SOC_BIAS_PREPARE && !sys_power) {
+ ret = snd_soc_dapm_set_bias_level(socdev,
+ SND_SOC_BIAS_STANDBY);
+ if (ret != 0)
+ pr_err("Failed to apply standby bias: %d\n", ret);
}
- return ret;
+ /* If we just powered up then move to active bias */
+ if (codec->bias_level == SND_SOC_BIAS_PREPARE && sys_power) {
+ ret = snd_soc_dapm_set_bias_level(socdev,
+ SND_SOC_BIAS_ON);
+ if (ret != 0)
+ pr_err("Failed to apply active bias: %d\n", ret);
+ }
+
+ pop_dbg(codec->pop_time, "DAPM sequencing finished, waiting %dms\n",
+ codec->pop_time);
+
+ return 0;
}
-#if DAPM_DEBUG
+#ifdef DEBUG
static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action)
{
struct snd_soc_dapm_widget *w;
case snd_soc_dapm_vmid:
continue;
case snd_soc_dapm_mux:
+ case snd_soc_dapm_value_mux:
case snd_soc_dapm_output:
case snd_soc_dapm_input:
case snd_soc_dapm_switch:
case snd_soc_dapm_adc:
case snd_soc_dapm_pga:
case snd_soc_dapm_mixer:
+ case snd_soc_dapm_mixer_named_ctl:
+ case snd_soc_dapm_supply:
+ case snd_soc_dapm_aif_in:
+ case snd_soc_dapm_aif_out:
if (w->name) {
in = is_connected_input_ep(w);
dapm_clear_walk(w->codec);
}
#endif
+#ifdef CONFIG_DEBUG_FS
+static int dapm_widget_power_open_file(struct inode *inode, struct file *file)
+{
+ file->private_data = inode->i_private;
+ return 0;
+}
+
+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->codec);
+ out = is_connected_output_ep(w);
+ dapm_clear_walk(w->codec);
+
+ ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d\n",
+ w->name, w->power ? "On" : "Off", in, out);
+
+ 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 = dapm_widget_power_open_file,
+ .read = dapm_widget_power_read_file,
+};
+
+void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec)
+{
+ struct snd_soc_dapm_widget *w;
+ struct dentry *d;
+
+ if (!codec->debugfs_dapm)
+ return;
+
+ list_for_each_entry(w, &codec->dapm_widgets, list) {
+ if (!w->name)
+ continue;
+
+ d = debugfs_create_file(w->name, 0444,
+ codec->debugfs_dapm, w,
+ &dapm_widget_power_fops);
+ if (!d)
+ printk(KERN_WARNING
+ "ASoC: Failed to create %s debugfs file\n",
+ w->name);
+ }
+}
+#else
+void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec)
+{
+}
+#endif
+
/* test and update the power status of a mux widget */
static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
- struct snd_kcontrol *kcontrol, int mask,
- int val, struct soc_enum* e)
+ struct snd_kcontrol *kcontrol, int change,
+ int mux, struct soc_enum *e)
{
struct snd_soc_dapm_path *path;
int found = 0;
- if (widget->id != snd_soc_dapm_mux)
+ if (widget->id != snd_soc_dapm_mux &&
+ widget->id != snd_soc_dapm_value_mux)
return -ENODEV;
- if (!snd_soc_test_bits(widget->codec, e->reg, mask, val))
+ if (!change)
return 0;
/* find dapm widget path assoc with kcontrol */
if (path->kcontrol != kcontrol)
continue;
- if (!path->name || ! e->texts[val])
+ 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[val])))
+ if (!(strcmp(path->name, e->texts[mux])))
path->connect = 1; /* new connection */
else
path->connect = 0; /* old connection must be powered down */
}
- if (found)
+ if (found) {
dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP);
+ dump_dapm(widget->codec, "mux power update");
+ }
return 0;
}
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;
break;
}
- if (found)
+ if (found) {
dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP);
+ dump_dapm(widget->codec, "mixer power update");
+ }
return 0;
}
struct device_attribute *attr, char *buf)
{
struct snd_soc_device *devdata = dev_get_drvdata(dev);
- struct snd_soc_codec *codec = devdata->codec;
+ struct snd_soc_codec *codec = devdata->card->codec;
struct snd_soc_dapm_widget *w;
int count = 0;
char *state = "not set";
case snd_soc_dapm_adc:
case snd_soc_dapm_pga:
case snd_soc_dapm_mixer:
+ case snd_soc_dapm_mixer_named_ctl:
+ case snd_soc_dapm_supply:
if (w->name)
count += sprintf(buf + count, "%s: %s\n",
w->name, w->power ? "On":"Off");
int snd_soc_dapm_sys_add(struct device *dev)
{
- int ret = 0;
-
- if (dapm_status)
- ret = device_create_file(dev, &dev_attr_dapm_widget);
-
- return ret;
+ return device_create_file(dev, &dev_attr_dapm_widget);
}
static void snd_soc_dapm_sys_remove(struct device *dev)
{
- if (dapm_status)
- device_remove_file(dev, &dev_attr_dapm_widget);
+ device_remove_file(dev, &dev_attr_dapm_widget);
}
/* free all dapm widgets and resources */
}
}
+static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec,
+ const char *pin, int status)
+{
+ struct snd_soc_dapm_widget *w;
+
+ list_for_each_entry(w, &codec->dapm_widgets, list) {
+ if (!strcmp(w->name, pin)) {
+ pr_debug("dapm: %s: pin %s\n", codec->name, pin);
+ w->connected = status;
+ return 0;
+ }
+ }
+
+ pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin);
+ return -EINVAL;
+}
+
/**
- * snd_soc_dapm_sync_endpoints - scan and power dapm paths
+ * snd_soc_dapm_sync - scan and power dapm paths
* @codec: audio codec
*
* Walks all dapm audio paths and powers widgets according to their
*
* Returns 0 for success.
*/
-int snd_soc_dapm_sync_endpoints(struct snd_soc_codec *codec)
+int snd_soc_dapm_sync(struct snd_soc_codec *codec)
{
- return dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP);
+ int ret = dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP);
+ dump_dapm(codec, "sync");
+ return ret;
}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_endpoints);
+EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
static int snd_soc_dapm_add_route(struct snd_soc_codec *codec,
- const char *sink, const char *control, const char *source)
+ const struct snd_soc_dapm_route *route)
{
struct snd_soc_dapm_path *path;
struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
+ const char *sink = route->sink;
+ const char *control = route->control;
+ const char *source = route->source;
int ret = 0;
/* find src and dest widgets */
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);
if (wsink->id == snd_soc_dapm_input) {
if (wsource->id == snd_soc_dapm_micbias ||
wsource->id == snd_soc_dapm_mic ||
- wsink->id == snd_soc_dapm_line ||
- wsink->id == snd_soc_dapm_output)
+ wsource->id == snd_soc_dapm_line ||
+ wsource->id == snd_soc_dapm_output)
wsink->ext = 1;
}
if (wsource->id == snd_soc_dapm_output) {
case snd_soc_dapm_vmid:
case snd_soc_dapm_pre:
case snd_soc_dapm_post:
+ case snd_soc_dapm_supply:
+ case snd_soc_dapm_aif_in:
+ case snd_soc_dapm_aif_out:
list_add(&path->list, &codec->dapm_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_value_mux:
ret = dapm_connect_mux(codec, wsource, wsink, path, control,
&wsink->kcontrols[0]);
if (ret != 0)
break;
case snd_soc_dapm_switch:
case snd_soc_dapm_mixer:
+ case snd_soc_dapm_mixer_named_ctl:
ret = dapm_connect_mixer(codec, wsource, wsink, path, control);
if (ret != 0)
goto err;
}
/**
- * snd_soc_dapm_connect_input - connect dapm widgets
- * @codec: audio codec
- * @sink: name of target widget
- * @control: mixer control name
- * @source: name of source name
- *
- * 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.
- *
- * This function has been deprecated in favour of snd_soc_dapm_add_routes().
- *
- * Returns 0 for success else error.
- */
-int snd_soc_dapm_connect_input(struct snd_soc_codec *codec, const char *sink,
- const char *control, const char *source)
-{
- return snd_soc_dapm_add_route(codec, sink, control, source);
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_connect_input);
-
-/**
* snd_soc_dapm_add_routes - Add routes between DAPM widgets
* @codec: codec
* @route: audio routes
int i, ret;
for (i = 0; i < num; i++) {
- ret = snd_soc_dapm_add_route(codec, route->sink,
- route->control, route->source);
+ ret = snd_soc_dapm_add_route(codec, route);
if (ret < 0) {
printk(KERN_ERR "Failed to add route %s->%s\n",
route->source,
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;
dapm_new_mixer(codec, w);
break;
case snd_soc_dapm_mux:
+ case snd_soc_dapm_value_mux:
+ w->power_check = dapm_generic_check_power;
dapm_new_mux(codec, w);
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:
+ w->power_check = dapm_generic_check_power;
dapm_new_pga(codec, w);
break;
case snd_soc_dapm_input:
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:
+ w->power_check = dapm_supply_check_power;
case snd_soc_dapm_vmid:
case snd_soc_dapm_pre:
case snd_soc_dapm_post:
/**
* snd_soc_dapm_get_volsw - dapm mixer get callback
* @kcontrol: mixer control
- * @uinfo: control element information
+ * @ucontrol: control element information
*
* Callback to get the value of a dapm mixer control.
*
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
- int reg = kcontrol->private_value & 0xff;
- int shift = (kcontrol->private_value >> 8) & 0x0f;
- int rshift = (kcontrol->private_value >> 12) & 0x0f;
- int max = (kcontrol->private_value >> 16) & 0xff;
- int invert = (kcontrol->private_value >> 24) & 0x01;
- int mask = (1 << fls(max)) - 1;
+ 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;
/* return the saved value if we are powered down */
if (widget->id == snd_soc_dapm_pga && !widget->power) {
/**
* snd_soc_dapm_put_volsw - dapm mixer set callback
* @kcontrol: mixer control
- * @uinfo: control element information
+ * @ucontrol: control element information
*
* Callback to set the value of a dapm mixer control.
*
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
- int reg = kcontrol->private_value & 0xff;
- int shift = (kcontrol->private_value >> 8) & 0x0f;
- int rshift = (kcontrol->private_value >> 12) & 0x0f;
- int max = (kcontrol->private_value >> 16) & 0xff;
- int mask = (1 << fls(max)) - 1;
- int invert = (kcontrol->private_value >> 24) & 0x01;
- unsigned short val, val2, val_mask;
+ 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 mask = (1 << fls(max)) - 1;
+ unsigned int invert = mc->invert;
+ unsigned int val, val2, val_mask;
int ret;
val = (ucontrol->value.integer.value[0] & mask);
/**
* snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
* @kcontrol: mixer control
- * @uinfo: control element information
+ * @ucontrol: control element information
*
* Callback to get the value of a dapm enumerated double mixer control.
*
{
struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
- unsigned short val, bitmask;
+ unsigned int val, bitmask;
- for (bitmask = 1; bitmask < e->mask; bitmask <<= 1)
+ 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);
/**
* snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
* @kcontrol: mixer control
- * @uinfo: control element information
+ * @ucontrol: control element information
*
* Callback to set the value of a dapm enumerated double mixer control.
*
{
struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
- unsigned short val, mux;
- unsigned short mask, bitmask;
+ unsigned int val, mux, change;
+ unsigned int mask, bitmask;
int ret = 0;
- for (bitmask = 1; bitmask < e->mask; bitmask <<= 1)
+ for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
;
- if (ucontrol->value.enumerated.item[0] > e->mask - 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->mask - 1)
+ 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(&widget->codec->mutex);
widget->value = val;
- dapm_mux_update_power(widget, kcontrol, mask, mux, e);
- if (widget->event) {
- if (widget->event_flags & SND_SOC_DAPM_PRE_REG) {
- ret = widget->event(widget,
- kcontrol, SND_SOC_DAPM_PRE_REG);
- if (ret < 0)
- goto out;
- }
- ret = snd_soc_update_bits(widget->codec, e->reg, mask, val);
- if (widget->event_flags & SND_SOC_DAPM_POST_REG)
- ret = widget->event(widget,
- kcontrol, SND_SOC_DAPM_POST_REG);
- } else
- ret = snd_soc_update_bits(widget->codec, e->reg, mask, val);
+ change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
+ dapm_mux_update_power(widget, kcontrol, change, mux, e);
+
+ if (widget->event_flags & SND_SOC_DAPM_PRE_REG) {
+ ret = widget->event(widget,
+ kcontrol, SND_SOC_DAPM_PRE_REG);
+ if (ret < 0)
+ goto out;
+ }
+
+ ret = snd_soc_update_bits(widget->codec, e->reg, mask, val);
+
+ if (widget->event_flags & SND_SOC_DAPM_POST_REG)
+ ret = widget->event(widget,
+ kcontrol, SND_SOC_DAPM_POST_REG);
out:
mutex_unlock(&widget->codec->mutex);
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 *widget = snd_kcontrol_chip(kcontrol);
+
+ 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 *widget = snd_kcontrol_chip(kcontrol);
+ struct soc_enum *e =
+ (struct soc_enum *)kcontrol->private_value;
+ int change;
+ int ret = 0;
+
+ if (ucontrol->value.enumerated.item[0] >= e->max)
+ return -EINVAL;
+
+ mutex_lock(&widget->codec->mutex);
+
+ change = widget->value != ucontrol->value.enumerated.item[0];
+ widget->value = ucontrol->value.enumerated.item[0];
+ dapm_mux_update_power(widget, kcontrol, change, widget->value, e);
+
+ mutex_unlock(&widget->codec->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 *widget = snd_kcontrol_chip(kcontrol);
+ 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 *widget = snd_kcontrol_chip(kcontrol);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ unsigned int val, mux, change;
+ unsigned int mask;
+ int ret = 0;
+
+ 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(&widget->codec->mutex);
+ widget->value = val;
+ change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
+ dapm_mux_update_power(widget, kcontrol, change, mux, e);
+
+ if (widget->event_flags & SND_SOC_DAPM_PRE_REG) {
+ ret = widget->event(widget,
+ kcontrol, SND_SOC_DAPM_PRE_REG);
+ if (ret < 0)
+ goto out;
+ }
+
+ ret = snd_soc_update_bits(widget->codec, e->reg, mask, val);
+
+ if (widget->event_flags & SND_SOC_DAPM_POST_REG)
+ ret = widget->event(widget,
+ kcontrol, SND_SOC_DAPM_POST_REG);
+
+out:
+ mutex_unlock(&widget->codec->mutex);
+ return ret;
+}
+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_codec *codec = snd_kcontrol_chip(kcontrol);
+ const char *pin = (const char *)kcontrol->private_value;
+
+ mutex_lock(&codec->mutex);
+
+ ucontrol->value.integer.value[0] =
+ snd_soc_dapm_get_pin_status(codec, pin);
+
+ mutex_unlock(&codec->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_codec *codec = snd_kcontrol_chip(kcontrol);
+ const char *pin = (const char *)kcontrol->private_value;
+
+ mutex_lock(&codec->mutex);
+
+ if (ucontrol->value.integer.value[0])
+ snd_soc_dapm_enable_pin(codec, pin);
+ else
+ snd_soc_dapm_disable_pin(codec, pin);
+
+ snd_soc_dapm_sync(codec);
+
+ mutex_unlock(&codec->mutex);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
+
+/**
* snd_soc_dapm_new_control - create new dapm control
* @codec: audio codec
* @widget: widget template
for (i = 0; i < num; i++) {
ret = snd_soc_dapm_new_control(codec, widget);
- if (ret < 0)
+ if (ret < 0) {
+ printk(KERN_ERR
+ "ASoC: Failed to create DAPM control %s: %d\n",
+ widget->name, ret);
return ret;
+ }
widget++;
}
return 0;
{
if (!w->sname)
continue;
- dbg("widget %s\n %s stream %s event %d\n", w->name, w->sname,
- stream, event);
+ pr_debug("widget %s\n %s stream %s event %d\n",
+ w->name, w->sname, stream, event);
if (strstr(w->sname, stream)) {
switch(event) {
case SND_SOC_DAPM_STREAM_START:
}
}
}
- mutex_unlock(&codec->mutex);
dapm_power_widgets(codec, event);
+ mutex_unlock(&codec->mutex);
dump_dapm(codec, __func__);
return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event);
/**
- * snd_soc_dapm_set_bias_level - set the bias level for the system
- * @socdev: audio device
- * @level: level to configure
+ * snd_soc_dapm_enable_pin - enable pin.
+ * @codec: SoC codec
+ * @pin: pin name
*
- * Configure the bias (power) levels for the SoC audio device.
- *
- * Returns 0 for success else error.
+ * 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_set_bias_level(struct snd_soc_device *socdev,
- enum snd_soc_bias_level level)
+int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, const char *pin)
{
- struct snd_soc_codec *codec = socdev->codec;
- struct snd_soc_machine *machine = socdev->machine;
- int ret = 0;
-
- if (machine->set_bias_level)
- ret = machine->set_bias_level(machine, level);
- if (ret == 0 && codec->set_bias_level)
- ret = codec->set_bias_level(codec, level);
+ return snd_soc_dapm_set_pin(codec, pin, 1);
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
- return ret;
+/**
+ * snd_soc_dapm_disable_pin - disable pin.
+ * @codec: SoC codec
+ * @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_codec *codec, const char *pin)
+{
+ return snd_soc_dapm_set_pin(codec, pin, 0);
}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
/**
- * snd_soc_dapm_set_endpoint - set audio endpoint status
- * @codec: audio codec
- * @endpoint: audio signal endpoint (or start point)
- * @status: point status
+ * snd_soc_dapm_nc_pin - permanently disable pin.
+ * @codec: SoC codec
+ * @pin: pin name
*
- * Set audio endpoint status - connected or disconnected.
+ * 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.
*
- * Returns 0 for success else error.
+ * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
+ * do any widget power switching.
*/
-int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec,
- char *endpoint, int status)
+int snd_soc_dapm_nc_pin(struct snd_soc_codec *codec, const char *pin)
{
- struct snd_soc_dapm_widget *w;
-
- list_for_each_entry(w, &codec->dapm_widgets, list) {
- if (!strcmp(w->name, endpoint)) {
- w->connected = status;
- return 0;
- }
- }
-
- return -ENODEV;
+ return snd_soc_dapm_set_pin(codec, pin, 0);
}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_set_endpoint);
+EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
/**
- * snd_soc_dapm_get_endpoint_status - get audio endpoint status
+ * snd_soc_dapm_get_pin_status - get audio pin status
* @codec: audio codec
- * @endpoint: audio signal endpoint (or start point)
+ * @pin: audio signal pin endpoint (or start point)
*
- * Get audio endpoint status - connected or disconnected.
+ * Get audio pin status - connected or disconnected.
*
- * Returns status
+ * Returns 1 for connected otherwise 0.
*/
-int snd_soc_dapm_get_endpoint_status(struct snd_soc_codec *codec,
- char *endpoint)
+int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, const char *pin)
{
struct snd_soc_dapm_widget *w;
list_for_each_entry(w, &codec->dapm_widgets, list) {
- if (!strcmp(w->name, endpoint))
+ if (!strcmp(w->name, pin))
return w->connected;
}
return 0;
}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_get_endpoint_status);
+EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
/**
* snd_soc_dapm_free - free dapm resources
*/
void snd_soc_dapm_free(struct snd_soc_device *socdev)
{
- struct snd_soc_codec *codec = socdev->codec;
+ struct snd_soc_codec *codec = socdev->card->codec;
snd_soc_dapm_sys_remove(socdev->dev);
dapm_free_widgets(codec);
}
EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
+/*
+ * snd_soc_dapm_shutdown - callback for system shutdown
+ */
+void snd_soc_dapm_shutdown(struct snd_soc_device *socdev)
+{
+ struct snd_soc_codec *codec = socdev->card->codec;
+ struct snd_soc_dapm_widget *w;
+ LIST_HEAD(down_list);
+ int powerdown = 0;
+
+ list_for_each_entry(w, &codec->dapm_widgets, list) {
+ if (w->power) {
+ dapm_seq_insert(w, &down_list, dapm_down_seq);
+ w->power = 0;
+ powerdown = 1;
+ }
+ }
+
+ /* If there were no widgets to power down we're already in
+ * standby.
+ */
+ if (powerdown) {
+ snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_PREPARE);
+ dapm_seq_run(codec, &down_list, 0, dapm_down_seq);
+ snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_STANDBY);
+ }
+
+ snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_OFF);
+}
+
/* Module information */
-MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com");
+MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
MODULE_LICENSE("GPL");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff