* 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/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, snd_soc_dapm_micbias, snd_soc_dapm_mic,
- snd_soc_dapm_mux, snd_soc_dapm_value_mux, snd_soc_dapm_dac,
- snd_soc_dapm_mixer, snd_soc_dapm_mixer_named_ctl, 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_named_ctl, snd_soc_dapm_mixer,
- snd_soc_dapm_dac, snd_soc_dapm_mic, snd_soc_dapm_micbias,
- snd_soc_dapm_mux, snd_soc_dapm_value_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)
if (pop_time) {
vprintk(fmt, args);
- pop_wait(pop_time);
}
va_end(args);
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)
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,
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 */
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)
* kcontrol name.
*/
name_len = strlen(w->kcontrols[i].name) + 1;
- if (w->id == snd_soc_dapm_mixer)
+ if (w->id != snd_soc_dapm_mixer_named_ctl)
name_len += 1 + strlen(w->name);
path->long_name = kmalloc(name_len, GFP_KERNEL);
return -ENOMEM;
switch (w->id) {
- case snd_soc_dapm_mixer:
default:
snprintf(path->long_name, name_len, "%s %s",
w->name, w->kcontrols[i].name);
- break;
+ break;
case snd_soc_dapm_mixer_named_ctl:
snprintf(path->long_name, name_len, "%s",
w->kcontrols[i].name);
- break;
+ break;
}
path->long_name[name_len - 1] = '\0';
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;
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)
+ pr_err("asoc: PGA controls not supported: '%s'\n", w->name);
- 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;
- }
-
- 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.
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 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)
- return 1;
+ (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources)))
+ return snd_soc_dapm_suspend_check(widget);
}
list_for_each_entry(path, &widget->sinks, list_source) {
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 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)
- return 1;
+ if (widget->id == snd_soc_dapm_mic ||
+ (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks)))
+ return snd_soc_dapm_suspend_check(widget);
}
list_for_each_entry(path, &widget->sources, list_sink) {
}
EXPORT_SYMBOL_GPL(dapm_reg_event);
-/*
- * Scan a single DAPM widget for a complete audio path and update the
- * power status appropriately.
+/* Standard power change method, used to apply power changes to most
+ * widgets.
*/
-static int dapm_power_widget(struct snd_soc_codec *codec, int event,
- struct snd_soc_dapm_widget *w)
+static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w)
{
- int in, out, power_change, power, ret;
-
- /* vmid - no action */
- if (w->id == snd_soc_dapm_vmid)
- return 0;
-
- /* 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);
- return 0;
- }
-
- /* 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);
- return 0;
- }
-
- /* pre and post event widgets */
- if (w->id == snd_soc_dapm_pre) {
- if (!w->event)
- return 0;
-
- 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;
- }
- return 0;
- }
- if (w->id == snd_soc_dapm_post) {
- if (!w->event)
- return 0;
-
- 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;
- }
- return 0;
- }
-
- /* 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;
-
- if (!power_change)
- return 0;
+ int ret;
/* call any power change event handlers */
if (w->event)
w->name, w->event_flags);
/* power up pre event */
- if (power && w->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)
}
/* power down pre event */
- if (!power && w->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 && !power)
- dapm_set_pga(w, power);
-
dapm_update_bits(w);
- /* Raise PGA volume to reduce pops */
- if (w->id == snd_soc_dapm_pga && power)
- dapm_set_pga(w, power);
-
/* power up post event */
- if (power && w->event &&
+ if (w->power && w->event &&
(w->event_flags & SND_SOC_DAPM_POST_PMU)) {
ret = w->event(w,
NULL, SND_SOC_DAPM_POST_PMU);
}
/* power down post event */
- if (!power && w->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 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 (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)
+ 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);
+ }
+ }
+
+ 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) {
+ /* 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.
* A complete path is a route that has valid endpoints i.e.:-
*/
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 i, c = 1, *seq = NULL, ret = 0;
+ LIST_HEAD(up_list);
+ LIST_HEAD(down_list);
+ int ret = 0;
+ int power;
+ int sys_power = 0;
- /* 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;
- }
+ /* 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;
+
+ default:
+ if (!w->power_check)
+ continue;
- for (i = 0; i < c; i++) {
- list_for_each_entry(w, &codec->dapm_widgets, list) {
+ if (!w->force)
+ power = w->power_check(w);
+ else
+ power = 1;
+ if (power)
+ sys_power = 1;
- /* is widget in stream order */
- if (seq && seq[i] && w->id != seq[i])
+ if (w->power == power)
continue;
- ret = dapm_power_widget(codec, event, w);
- if (ret != 0)
- return ret;
+ if (power)
+ dapm_seq_insert(w, &up_list, dapm_up_seq);
+ else
+ dapm_seq_insert(w, &down_list, dapm_down_seq);
+
+ w->power = power;
+ break;
+ }
+ }
+
+ /* 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_SUSPEND:
+ sys_power = 0;
+ break;
+ case SND_SOC_DAPM_STREAM_NOP:
+ 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)) {
+ ret = snd_soc_dapm_set_bias_level(socdev,
+ SND_SOC_BIAS_PREPARE);
+ if (ret != 0)
+ pr_err("Failed to prepare bias: %d\n", ret);
+ }
+
+ /* Power down widgets first; try to avoid amplifying pops. */
+ dapm_seq_run(codec, &down_list, event, dapm_down_seq);
+
+ /* Now power up. */
+ dapm_seq_run(codec, &up_list, event, dapm_up_seq);
+
+ /* 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);
+ }
+
+ /* 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,
+ 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);
+ pop_wait(codec->pop_time);
+
return 0;
}
-#ifdef DEBUG
-static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action)
+#ifdef CONFIG_DEBUG_FS
+static int dapm_widget_power_open_file(struct inode *inode, struct file *file)
{
- struct snd_soc_dapm_widget *w;
- struct snd_soc_dapm_path *p = NULL;
+ 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;
- printk("DAPM %s %s\n", codec->name, action);
+ buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
- list_for_each_entry(w, &codec->dapm_widgets, list) {
+ in = is_connected_input_ep(w);
+ dapm_clear_walk(w->codec);
+ out = is_connected_output_ep(w);
+ dapm_clear_walk(w->codec);
- /* only display widgets that effect routing */
- switch (w->id) {
- case snd_soc_dapm_pre:
- case snd_soc_dapm_post:
- case snd_soc_dapm_vmid:
+ ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d",
+ w->name, w->power ? "On" : "Off", 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;
- 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:
- 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;
- }
+
+ 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 mux, 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;
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 */
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;
}
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)
{
- if (!dapm_status)
- return 0;
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 */
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);
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);
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,
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:
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)
int max = mc->max;
unsigned int mask = (1 << fls(max)) - 1;
unsigned int invert = mc->invert;
- unsigned short val, val2, val_mask;
+ 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,
{
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->max; bitmask <<= 1)
;
{
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->max; bitmask <<= 1)
mutex_lock(&widget->codec->mutex);
widget->value = val;
- dapm_mux_update_power(widget, kcontrol, mask, mux, val, 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
{
struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
- unsigned short reg_val, val, mux;
+ unsigned int reg_val, val, mux;
reg_val = snd_soc_read(widget->codec, e->reg);
val = (reg_val >> e->shift_l) & e->mask;
{
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;
+ unsigned int val, mux, change;
+ unsigned int mask;
int ret = 0;
if (ucontrol->value.enumerated.item[0] > e->max - 1)
mutex_lock(&widget->codec->mutex);
widget->value = val;
- dapm_mux_update_power(widget, kcontrol, mask, mux, val, 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);
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;
}
}
}
- mutex_unlock(&codec->mutex);
dapm_power_widgets(codec, event);
- dump_dapm(codec, __func__);
+ mutex_unlock(&codec->mutex);
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
- *
- * Configure the bias (power) levels for the SoC audio device.
+ * snd_soc_dapm_enable_pin - enable pin.
+ * @codec: SoC codec
+ * @pin: pin name
*
- * 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_card *card = socdev->card;
- struct snd_soc_codec *codec = socdev->card->codec;
- int ret = 0;
-
- if (card->set_bias_level)
- ret = card->set_bias_level(card, level);
- if (ret == 0 && codec->set_bias_level)
- ret = codec->set_bias_level(codec, level);
-
- return ret;
+ return snd_soc_dapm_set_pin(codec, pin, 1);
}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
/**
- * snd_soc_dapm_enable_pin - enable pin.
+ * snd_soc_dapm_force_enable_pin - force a pin to be enabled
* @codec: SoC codec
* @pin: pin name
*
- * Enables input/output pin and it's parents or children widgets iff there is
- * a valid audio route and active audio stream.
+ * 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_enable_pin(struct snd_soc_codec *codec, const char *pin)
+int snd_soc_dapm_force_enable_pin(struct snd_soc_codec *codec, const char *pin)
{
- return snd_soc_dapm_set_pin(codec, pin, 1);
+ 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_enable_pin);
+EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
/**
* snd_soc_dapm_disable_pin - disable pin.
* @codec: SoC codec
* @pin: pin name
*
- * Disables input/output pin and it's parents or children widgets.
+ * 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.
*/
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
*
}
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, lrg@slimlogic.co.uk");
MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff