diff options
Diffstat (limited to 'sound/soc/soc-dapm.c')
| -rw-r--r-- | sound/soc/soc-dapm.c | 344 |
1 files changed, 258 insertions, 86 deletions
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index af3326c6350..2c87061c2a6 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -10,11 +10,6 @@ * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * - * Revision history - * 12th Aug 2005 Initial version. - * 25th Oct 2005 Implemented path power domain. - * 18th Dec 2005 Implemented machine and stream level power domain. - * * Features: * o Changes power status of internal codec blocks depending on the * dynamic configuration of codec internal audio paths and active @@ -50,23 +45,10 @@ #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 */ @@ -85,6 +67,28 @@ static int dapm_status = 1; module_param(dapm_status, int, 0); MODULE_PARM_DESC(dapm_status, "enable DPM sysfs entries"); +static unsigned int pop_time; + +static void pop_wait(void) +{ + if (pop_time) + schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); +} + +static void pop_dbg(const char *fmt, ...) +{ + va_list args; + + va_start(args, fmt); + + if (pop_time) { + vprintk(fmt, args); + pop_wait(); + } + + va_end(args); +} + /* create a new dapm widget */ static inline struct snd_soc_dapm_widget *dapm_cnew_widget( const struct snd_soc_dapm_widget *_widget) @@ -222,11 +226,12 @@ static int dapm_update_bits(struct snd_soc_dapm_widget *widget) change = old != new; if (change) { pop_dbg("pop test %s : %s in %d ms\n", widget->name, - widget->power ? "on" : "off", POP_TIME); + widget->power ? "on" : "off", pop_time); snd_soc_write(codec, widget->reg, new); - pop_wait(POP_TIME); + pop_wait(); } - 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; } @@ -448,6 +453,25 @@ static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) } /* + * Handler for generic register modifier widget. + */ +int dapm_reg_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + unsigned int val; + + if (SND_SOC_DAPM_EVENT_ON(event)) + val = w->on_val; + else + val = w->off_val; + + snd_soc_update_bits(w->codec, -(w->reg + 1), + w->mask << w->shift, val << w->shift); + + return 0; +} + +/* * Scan each dapm widget for complete audio path. * A complete path is a route that has valid endpoints i.e.:- * @@ -565,8 +589,8 @@ static int dapm_power_widgets(struct snd_soc_codec *codec, int event) /* 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); + pr_debug("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) { @@ -608,7 +632,7 @@ static int dapm_power_widgets(struct snd_soc_codec *codec, int event) return ret; } -#if DAPM_DEBUG +#ifdef DEBUG static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) { struct snd_soc_dapm_widget *w; @@ -693,8 +717,10 @@ static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, 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; } @@ -730,8 +756,10 @@ static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, break; } - if (found) + if (found) { dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); + dump_dapm(widget->codec, "mixer power update"); + } return 0; } @@ -768,21 +796,18 @@ static ssize_t dapm_widget_show(struct device *dev, } } - switch(codec->dapm_state){ - case SNDRV_CTL_POWER_D0: - state = "D0"; + switch (codec->bias_level) { + case SND_SOC_BIAS_ON: + state = "On"; break; - case SNDRV_CTL_POWER_D1: - state = "D1"; + case SND_SOC_BIAS_PREPARE: + state = "Prepare"; break; - case SNDRV_CTL_POWER_D2: - state = "D2"; + case SND_SOC_BIAS_STANDBY: + state = "Standby"; break; - case SNDRV_CTL_POWER_D3hot: - state = "D3hot"; - break; - case SNDRV_CTL_POWER_D3cold: - state = "D3cold"; + case SND_SOC_BIAS_OFF: + state = "Off"; break; } count += sprintf(buf + count, "PM State: %s\n", state); @@ -792,20 +817,51 @@ static ssize_t dapm_widget_show(struct device *dev, static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); +/* pop/click delay times */ +static ssize_t dapm_pop_time_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "%d\n", pop_time); +} + +static ssize_t dapm_pop_time_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) + +{ + unsigned long val; + + if (strict_strtoul(buf, 10, &val) >= 0) + pop_time = val; + else + printk(KERN_ERR "Unable to parse pop_time setting\n"); + + return count; +} + +static DEVICE_ATTR(dapm_pop_time, 0744, dapm_pop_time_show, + dapm_pop_time_store); + int snd_soc_dapm_sys_add(struct device *dev) { int ret = 0; - if (dapm_status) + if (dapm_status) { ret = device_create_file(dev, &dev_attr_dapm_widget); + if (ret == 0) + ret = device_create_file(dev, &dev_attr_dapm_pop_time); + } + return ret; } static void snd_soc_dapm_sys_remove(struct device *dev) { - if (dapm_status) + if (dapm_status) { + device_remove_file(dev, &dev_attr_dapm_pop_time); device_remove_file(dev, &dev_attr_dapm_widget); + } } /* free all dapm widgets and resources */ @@ -826,8 +882,25 @@ static void dapm_free_widgets(struct snd_soc_codec *codec) } } +static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec, + 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 @@ -835,27 +908,16 @@ static void dapm_free_widgets(struct snd_soc_codec *codec) * * 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); -/** - * 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. - * - * 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) +static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, + const char *sink, const char *control, const char *source) { struct snd_soc_dapm_path *path; struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; @@ -957,9 +1019,64 @@ err: kfree(path); return ret; } + +/** + * 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 + * @num: number of routes + * + * Connects 2 dapm widgets together via a named audio path. The sink is + * the widget receiving the audio signal, whilst the source is the sender + * of the audio signal. + * + * Returns 0 for success else error. On error all resources can be freed + * with a call to snd_soc_card_free(). + */ +int snd_soc_dapm_add_routes(struct snd_soc_codec *codec, + const struct snd_soc_dapm_route *route, int num) +{ + int i, ret; + + for (i = 0; i < num; i++) { + ret = snd_soc_dapm_add_route(codec, route->sink, + route->control, route->source); + if (ret < 0) { + printk(KERN_ERR "Failed to add route %s->%s\n", + route->source, + route->sink); + return ret; + } + route++; + } + + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); + +/** * snd_soc_dapm_new_widgets - add new dapm widgets * @codec: audio codec * @@ -1234,6 +1351,33 @@ int snd_soc_dapm_new_control(struct snd_soc_codec *codec, EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); /** + * snd_soc_dapm_new_controls - create new dapm controls + * @codec: audio codec + * @widget: widget array + * @num: number of widgets + * + * Creates new DAPM controls based upon the templates. + * + * Returns 0 for success else error. + */ +int snd_soc_dapm_new_controls(struct snd_soc_codec *codec, + const struct snd_soc_dapm_widget *widget, + int num) +{ + int i, ret; + + for (i = 0; i < num; i++) { + ret = snd_soc_dapm_new_control(codec, widget); + if (ret < 0) + return ret; + widget++; + } + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); + + +/** * snd_soc_dapm_stream_event - send a stream event to the dapm core * @codec: audio codec * @stream: stream name @@ -1257,8 +1401,8 @@ int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, { 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: @@ -1294,53 +1438,81 @@ int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); /** - * snd_soc_dapm_device_event - send a device event to the dapm core + * snd_soc_dapm_set_bias_level - set the bias level for the system * @socdev: audio device - * @event: device event + * @level: level to configure * - * Sends a device event to the dapm core. The core then makes any - * necessary machine or codec power changes.. + * Configure the bias (power) levels for the SoC audio device. * * Returns 0 for success else error. */ -int snd_soc_dapm_device_event(struct snd_soc_device *socdev, int event) +int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev, + enum snd_soc_bias_level level) { struct snd_soc_codec *codec = socdev->codec; struct snd_soc_machine *machine = socdev->machine; + int ret = 0; - if (machine->dapm_event) - machine->dapm_event(machine, event); - if (codec->dapm_event) - codec->dapm_event(codec, event); - return 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 ret; } -EXPORT_SYMBOL_GPL(snd_soc_dapm_device_event); /** - * snd_soc_dapm_set_endpoint - set audio endpoint status + * snd_soc_dapm_enable_pin - enable pin. + * @snd_soc_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. + * 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, char *pin) +{ + return snd_soc_dapm_set_pin(codec, pin, 1); +} +EXPORT_SYMBOL_GPL(snd_soc_dapm_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. + * 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, char *pin) +{ + return snd_soc_dapm_set_pin(codec, pin, 0); +} +EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); + +/** + * snd_soc_dapm_get_pin_status - get audio pin status * @codec: audio codec - * @endpoint: audio signal endpoint (or start point) - * @status: point status + * @pin: audio signal pin endpoint (or start point) * - * Set audio endpoint status - connected or disconnected. + * Get audio pin status - connected or disconnected. * - * Returns 0 for success else error. + * Returns 1 for connected otherwise 0. */ -int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec, - char *endpoint, int status) +int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, 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; - } + if (!strcmp(w->name, pin)) + return w->connected; } - return -ENODEV; + return 0; } -EXPORT_SYMBOL_GPL(snd_soc_dapm_set_endpoint); +EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); /** * snd_soc_dapm_free - free dapm resources |