#include <linux/platform_device.h>
#include <linux/jiffies.h>
#include <linux/debugfs.h>
+#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
-/* debug */
-#ifdef DEBUG
-#define dump_dapm(codec, action) dbg_dump_dapm(codec, action)
-#else
-#define dump_dapm(codec, action)
-#endif
-
/* dapm power sequences - make this per codec in the future */
static int dapm_up_seq[] = {
[snd_soc_dapm_pre] = 0,
if (pop_time) {
vprintk(fmt, args);
- pop_wait(pop_time);
}
va_end(args);
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(codec->pop_time);
+ snd_soc_write(codec, widget->reg, new);
}
pr_debug("reg %x old %x new %x change %d\n", widget->reg,
old, new, change);
return change;
}
-/* ramps the volume up or down to minimise pops before or after a
- * DAPM power event */
-static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power)
-{
- const struct snd_kcontrol_new *k = widget->kcontrols;
-
- if (widget->muted && !power)
- return 0;
- if (!widget->muted && power)
- return 0;
-
- if (widget->num_kcontrols && k) {
- 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 = max; i > widget->saved_value; i--)
- snd_soc_update_bits(widget->codec, reg, mask, i);
- } else {
- for (i = 0; i < widget->saved_value; i++)
- snd_soc_update_bits(widget->codec, reg, mask, i);
- }
- widget->muted = 0;
- } else {
- /* power down is about to occur, decrease volume to mute */
- int val = snd_soc_read(widget->codec, reg);
- int i = widget->saved_value = (val >> shift) & mask;
- if (invert) {
- for (; i < mask; i++)
- snd_soc_update_bits(widget->codec, reg, mask, i);
- } else {
- for (; i > 0; i--)
- snd_soc_update_bits(widget->codec, reg, mask, i);
- }
- widget->muted = 1;
- }
- }
- return 0;
-}
-
/* create new dapm mixer control */
static int dapm_new_mixer(struct snd_soc_codec *codec,
struct snd_soc_dapm_widget *w)
static int dapm_new_pga(struct snd_soc_codec *codec,
struct snd_soc_dapm_widget *w)
{
- struct snd_kcontrol *kcontrol;
- int ret = 0;
-
- if (!w->num_kcontrols)
- return -EINVAL;
-
- kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name);
- ret = snd_ctl_add(codec->card, kcontrol);
- if (ret < 0) {
- printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name);
- return ret;
- }
+ if (w->num_kcontrols)
+ pr_err("asoc: PGA controls not supported: '%s'\n", w->name);
- return ret;
+ return 0;
}
/* reset 'walked' bit for each dapm path */
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)
+{
+ struct snd_soc_codec *codec = widget->codec;
+
+ switch (snd_power_get_state(codec->card)) {
+ case SNDRV_CTL_POWER_D3hot:
+ case SNDRV_CTL_POWER_D3cold:
+ if (widget->ignore_suspend)
+ pr_debug("%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.
case snd_soc_dapm_adc:
case snd_soc_dapm_aif_out:
if (widget->active)
- return 1;
+ return snd_soc_dapm_suspend_check(widget);
default:
break;
}
if (widget->connected) {
/* connected pin ? */
if (widget->id == snd_soc_dapm_output && !widget->ext)
- return 1;
+ return snd_soc_dapm_suspend_check(widget);
/* 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)))
- return 1;
+ return snd_soc_dapm_suspend_check(widget);
}
list_for_each_entry(path, &widget->sinks, list_source) {
case snd_soc_dapm_dac:
case snd_soc_dapm_aif_in:
if (widget->active)
- return 1;
+ return snd_soc_dapm_suspend_check(widget);
default:
break;
}
if (widget->connected) {
/* connected pin ? */
if (widget->id == snd_soc_dapm_input && !widget->ext)
- return 1;
+ return snd_soc_dapm_suspend_check(widget);
/* connected VMID/Bias for lower pops */
if (widget->id == snd_soc_dapm_vmid)
- return 1;
+ return snd_soc_dapm_suspend_check(widget);
/* connected jack ? */
if (widget->id == snd_soc_dapm_mic ||
(widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks)))
- return 1;
+ return snd_soc_dapm_suspend_check(widget);
}
list_for_each_entry(path, &widget->sources, list_sink) {
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)) {
struct snd_soc_dapm_widget *b,
int sort[])
{
+ if (a->codec != b->codec)
+ return (unsigned long)a - (unsigned long)b;
if (sort[a->id] != sort[b->id])
return sort[a->id] - sort[b->id];
if (a->reg != b->reg)
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) {
}
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)) {
if (!w->power_check)
continue;
- /* If we're suspending then pull down all the
- * power. */
- switch (event) {
- case SND_SOC_DAPM_STREAM_SUSPEND:
- power = 0;
- break;
-
- default:
+ if (!w->force)
power = w->power_check(w);
- if (power)
- sys_power = 1;
- break;
- }
+ else
+ power = 1;
+ if (power)
+ sys_power = 1;
if (w->power == power)
continue;
sys_power = 0;
break;
case SND_SOC_DAPM_STREAM_NOP:
- sys_power = codec->bias_level != SND_SOC_BIAS_STANDBY;
+ switch (codec->bias_level) {
+ case SND_SOC_BIAS_STANDBY:
+ case SND_SOC_BIAS_OFF:
+ sys_power = 0;
+ break;
+ default:
+ sys_power = 1;
+ break;
+ }
break;
default:
break;
}
}
+ if (sys_power && codec->bias_level == SND_SOC_BIAS_OFF) {
+ ret = snd_soc_dapm_set_bias_level(socdev,
+ SND_SOC_BIAS_STANDBY);
+ if (ret != 0)
+ pr_err("Failed to turn on bias: %d\n", ret);
+ }
+
/* 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)) {
pr_err("Failed to apply standby bias: %d\n", ret);
}
+ /* If we're in standby and can support bias off then do that */
+ if (codec->bias_level == SND_SOC_BIAS_STANDBY &&
+ codec->idle_bias_off) {
+ ret = snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_OFF);
+ if (ret != 0)
+ pr_err("Failed to turn off bias: %d\n", 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,
pop_dbg(codec->pop_time, "DAPM sequencing finished, waiting %dms\n",
codec->pop_time);
+ pop_wait(codec->pop_time);
return 0;
}
-#ifdef DEBUG
-static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action)
-{
- struct snd_soc_dapm_widget *w;
- struct snd_soc_dapm_path *p = NULL;
- int in, out;
-
- printk("DAPM %s %s\n", codec->name, action);
-
- list_for_each_entry(w, &codec->dapm_widgets, list) {
-
- /* only display widgets that effect routing */
- switch (w->id) {
- case snd_soc_dapm_pre:
- case snd_soc_dapm_post:
- 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_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_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);
- out = is_connected_output_ep(w);
- dapm_clear_walk(w->codec);
- printk("%s: %s in %d out %d\n", w->name,
- w->power ? "On":"Off",in, out);
-
- list_for_each_entry(p, &w->sources, list_sink) {
- if (p->connect)
- printk(" in %s %s\n", p->name ? p->name : "static",
- p->source->name);
- }
- list_for_each_entry(p, &w->sinks, list_source) {
- if (p->connect)
- printk(" out %s %s\n", p->name ? p->name : "static",
- p->sink->name);
- }
- }
- break;
- }
- }
-}
-#endif
-
#ifdef CONFIG_DEBUG_FS
static int dapm_widget_power_open_file(struct inode *inode, struct file *file)
{
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;
}
/* test and update the power status of a mixer or switch widget */
static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
- struct snd_kcontrol *kcontrol, int reg,
- int val_mask, int val, int invert)
+ struct snd_kcontrol *kcontrol, int connect)
{
struct snd_soc_dapm_path *path;
int found = 0;
widget->id != snd_soc_dapm_switch)
return -ENODEV;
- if (!snd_soc_test_bits(widget->codec, reg, val_mask, val))
- return 0;
-
/* find dapm widget path assoc with kcontrol */
list_for_each_entry(path, &widget->codec->dapm_paths, list) {
if (path->kcontrol != kcontrol)
/* found, now check type */
found = 1;
- if (val)
- /* new connection */
- path->connect = invert ? 0:1;
- else
- /* old connection must be powered down */
- path->connect = invert ? 1:0;
+ path->connect = connect;
break;
}
- if (found) {
+ if (found)
dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP);
- dump_dapm(widget->codec, "mixer power update");
- }
return 0;
}
if (!strcmp(w->name, pin)) {
pr_debug("dapm: %s: pin %s\n", codec->name, pin);
w->connected = status;
+ /* Allow disabling of forced pins */
+ if (status == 0)
+ w->force = 0;
return 0;
}
}
*/
int snd_soc_dapm_sync(struct snd_soc_codec *codec)
{
- int ret = dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP);
- dump_dapm(codec, "sync");
- return ret;
+ return dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP);
}
EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
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) {
- ucontrol->value.integer.value[0] = widget->saved_value;
- return 0;
- }
-
ucontrol->value.integer.value[0] =
(snd_soc_read(widget->codec, reg) >> shift) & mask;
if (shift != rshift)
unsigned int mask = (1 << fls(max)) - 1;
unsigned int invert = mc->invert;
unsigned int val, val2, val_mask;
+ int connect;
int ret;
val = (ucontrol->value.integer.value[0] & mask);
mutex_lock(&widget->codec->mutex);
widget->value = val;
- /* save volume value if the widget is powered down */
- if (widget->id == snd_soc_dapm_pga && !widget->power) {
- widget->saved_value = val;
- mutex_unlock(&widget->codec->mutex);
- return 1;
+ if (snd_soc_test_bits(widget->codec, reg, val_mask, val)) {
+ if (val)
+ /* new connection */
+ connect = invert ? 0:1;
+ else
+ /* old connection must be powered down */
+ connect = invert ? 1:0;
+
+ dapm_mixer_update_power(widget, kcontrol, connect);
}
- dapm_mixer_update_power(widget, kcontrol, reg, val_mask, val, invert);
if (widget->event) {
if (widget->event_flags & SND_SOC_DAPM_PRE_REG) {
ret = widget->event(widget, kcontrol,
w->active = 0;
break;
case SND_SOC_DAPM_STREAM_SUSPEND:
- if (w->active)
- w->suspend = 1;
- w->active = 0;
- break;
case SND_SOC_DAPM_STREAM_RESUME:
- if (w->suspend) {
- w->active = 1;
- w->suspend = 0;
- }
- break;
case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
- break;
case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
break;
}
dapm_power_widgets(codec, event);
mutex_unlock(&codec->mutex);
- dump_dapm(codec, __func__);
return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event);
EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
/**
+ * snd_soc_dapm_force_enable_pin - force a pin to be enabled
+ * @codec: SoC codec
+ * @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_codec *codec, const char *pin)
+{
+ 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 = 1;
+ w->force = 1;
+ return 0;
+ }
+ }
+
+ pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin);
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
+
+/**
* snd_soc_dapm_disable_pin - disable pin.
* @codec: SoC codec
* @pin: pin name
EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
/**
+ * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
+ * @codec: audio codec
+ * @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_codec *codec, const char *pin)
+{
+ struct snd_soc_dapm_widget *w;
+
+ list_for_each_entry(w, &codec->dapm_widgets, list) {
+ if (!strcmp(w->name, pin)) {
+ w->ignore_suspend = 1;
+ return 0;
+ }
+ }
+
+ pr_err("Unknown DAPM pin: %s\n", pin);
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
+
+/**
* snd_soc_dapm_free - free dapm resources
* @socdev: SoC device
*
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff