CHROMIUM: ASoC: Import entire upstream ASoC tree

sound/soc/soc-jack.c

 /*
  * soc-jack.c  --  ALSA SoC jack handling
  *
  * Copyright 2008 Wolfson Microelectronics PLC.
  *
  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
  *
  *  This program is free software; you can redistribute  it and/or modify it
  *  under  the terms of  the GNU General  Public License as published by the
  *  Free Software Foundation;  either version 2 of the  License, or (at your
  *  option) any later version.
  */
 
 #include <sound/jack.h>
 #include <sound/soc.h>
-#include <sound/soc-dapm.h>
 #include <linux/gpio.h>
 #include <linux/interrupt.h>
 #include <linux/workqueue.h>
 #include <linux/delay.h>
+#include <trace/events/asoc.h>
 
 /**
  * snd_soc_jack_new - Create a new jack
  * @card:  ASoC card
  * @id:    an identifying string for this jack
  * @type:  a bitmask of enum snd_jack_type values that can be detected by
  *         this jack
  * @jack:  structure to use for the jack
  *
  * Creates a new jack object.
  *
  * Returns zero if successful, or a negative error code on failure.
  * On success jack will be initialised.
  */
 int snd_soc_jack_new(struct snd_soc_codec *codec, const char *id, int type,
                      struct snd_soc_jack *jack)
 {
         jack->codec = codec;
         INIT_LIST_HEAD(&jack->pins);
+        INIT_LIST_HEAD(&jack->jack_zones);
         BLOCKING_INIT_NOTIFIER_HEAD(&jack->notifier);
 
         return snd_jack_new(codec->card->snd_card, id, type, &jack->jack);
 }
 EXPORT_SYMBOL_GPL(snd_soc_jack_new);
 
 /**
  * snd_soc_jack_report - Report the current status for a jack
  *
  * @jack:   the jack
  * @status: a bitmask of enum snd_jack_type values that are currently detected.
  * @mask:   a bitmask of enum snd_jack_type values that being reported.
  *
  * If configured using snd_soc_jack_add_pins() then the associated
  * DAPM pins will be enabled or disabled as appropriate and DAPM
  * synchronised.
  *
  * Note: This function uses mutexes and should be called from a
  * context which can sleep (such as a workqueue).
  */
 void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask)
 {
         struct snd_soc_codec *codec;
+        struct snd_soc_dapm_context *dapm;
         struct snd_soc_jack_pin *pin;
         int enable;
         int oldstatus;
 
+        trace_snd_soc_jack_report(jack, mask, status);
+
         if (!jack)
                 return;
 
         codec = jack->codec;
+        dapm =  &codec->dapm;
 
         mutex_lock(&codec->mutex);
 
         oldstatus = jack->status;
 
         jack->status &= ~mask;
         jack->status |= status & mask;
 
         /* The DAPM sync is expensive enough to be worth skipping.
          * However, empty mask means pin synchronization is desired. */
         if (mask && (jack->status == oldstatus))
                 goto out;
 
+        trace_snd_soc_jack_notify(jack, status);
+
         list_for_each_entry(pin, &jack->pins, list) {
                 enable = pin->mask & jack->status;
 
                 if (pin->invert)
                         enable = !enable;
 
                 if (enable)
-                        snd_soc_dapm_enable_pin(codec, pin->pin);
+                        snd_soc_dapm_enable_pin(dapm, pin->pin);
                 else
-                        snd_soc_dapm_disable_pin(codec, pin->pin);
+                        snd_soc_dapm_disable_pin(dapm, pin->pin);
         }
 
         /* Report before the DAPM sync to help users updating micbias status */
         blocking_notifier_call_chain(&jack->notifier, status, NULL);
 
-        snd_soc_dapm_sync(codec);
+        snd_soc_dapm_sync(dapm);
 
         snd_jack_report(jack->jack, status);
 
 out:
         mutex_unlock(&codec->mutex);
 }
 EXPORT_SYMBOL_GPL(snd_soc_jack_report);
 
 /**
+ * snd_soc_jack_add_zones - Associate voltage zones with jack
+ *
+ * @jack:  ASoC jack
+ * @count: Number of zones
+ * @zone:  Array of zones
+ *
+ * After this function has been called the zones specified in the
+ * array will be associated with the jack.
+ */
+int snd_soc_jack_add_zones(struct snd_soc_jack *jack, int count,
+                          struct snd_soc_jack_zone *zones)
+{
+        int i;
+
+        for (i = 0; i < count; i++) {
+                INIT_LIST_HEAD(&zones[i].list);
+                list_add(&(zones[i].list), &jack->jack_zones);
+        }
+        return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_jack_add_zones);
+
+/**
+ * snd_soc_jack_get_type - Based on the mic bias value, this function returns
+ * the type of jack from the zones delcared in the jack type
+ *
+ * @micbias_voltage:  mic bias voltage at adc channel when jack is plugged in
+ *
+ * Based on the mic bias value passed, this function helps identify
+ * the type of jack from the already delcared jack zones
+ */
+int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage)
+{
+        struct snd_soc_jack_zone *zone;
+
+        list_for_each_entry(zone, &jack->jack_zones, list) {
+                if (micbias_voltage >= zone->min_mv &&
+                        micbias_voltage < zone->max_mv)
+                                return zone->jack_type;
+        }
+        return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_jack_get_type);
+
+/**
  * snd_soc_jack_add_pins - Associate DAPM pins with an ASoC jack
  *
  * @jack:  ASoC jack
  * @count: Number of pins
  * @pins:  Array of pins
  *
  * After this function has been called the DAPM pins specified in the
  * pins array will have their status updated to reflect the current
  * state of the jack whenever the jack status is updated.
  */
@@ skipping 62 matching lines @@
 EXPORT_SYMBOL_GPL(snd_soc_jack_notifier_unregister);
 
 #ifdef CONFIG_GPIOLIB
 /* gpio detect */
 static void snd_soc_jack_gpio_detect(struct snd_soc_jack_gpio *gpio)
 {
         struct snd_soc_jack *jack = gpio->jack;
         int enable;
         int report;
 
-        enable = gpio_get_value(gpio->gpio);
+        enable = gpio_get_value_cansleep(gpio->gpio);
         if (gpio->invert)
                 enable = !enable;
 
         if (enable)
                 report = gpio->report;
         else
                 report = 0;
 
         if (gpio->jack_status_check)
                 report = gpio->jack_status_check();
 
         snd_soc_jack_report(jack, report, gpio->report);
 }
 
 /* irq handler for gpio pin */
 static irqreturn_t gpio_handler(int irq, void *data)
 {
         struct snd_soc_jack_gpio *gpio = data;
+        struct device *dev = gpio->jack->codec->card->dev;
+
+        trace_snd_soc_jack_irq(gpio->name);
+
+        if (device_may_wakeup(dev))
+                pm_wakeup_event(dev, gpio->debounce_time + 50);
 
         schedule_delayed_work(&gpio->work,
                               msecs_to_jiffies(gpio->debounce_time));
 
         return IRQ_HANDLED;
 }
 
 /* gpio work */
 static void gpio_work(struct work_struct *work)
 {
@@ skipping 36 matching lines @@
                 if (ret)
                         goto undo;
 
                 ret = gpio_direction_input(gpios[i].gpio);
                 if (ret)
                         goto err;
 
                 INIT_DELAYED_WORK(&gpios[i].work, gpio_work);
                 gpios[i].jack = jack;
 
-                ret = request_irq(gpio_to_irq(gpios[i].gpio),
-                                gpio_handler,
-                                IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
-                                jack->codec->dev->driver->name,
-                                &gpios[i]);
+                ret = request_any_context_irq(gpio_to_irq(gpios[i].gpio),
+                                              gpio_handler,
+                                              IRQF_TRIGGER_RISING |
+                                              IRQF_TRIGGER_FALLING,
+                                              jack->codec->dev->driver->name,
+                                              &gpios[i]);
                 if (ret)
                         goto err;
 
 #ifdef CONFIG_GPIO_SYSFS
                 /* Expose GPIO value over sysfs for diagnostic purposes */
                 gpio_export(gpios[i].gpio, false);
 #endif
 
                 /* Update initial jack status */
                 snd_soc_jack_gpio_detect(&gpios[i]);
@@ skipping 29 matching lines @@
                 gpio_unexport(gpios[i].gpio);
 #endif
                 free_irq(gpio_to_irq(gpios[i].gpio), &gpios[i]);
                 cancel_delayed_work_sync(&gpios[i].work);
                 gpio_free(gpios[i].gpio);
                 gpios[i].jack = NULL;
         }
 }
 EXPORT_SYMBOL_GPL(snd_soc_jack_free_gpios);
 #endif  /* CONFIG_GPIOLIB */