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![Mark Brown](/assets/img/avatar_default.png)
We really should be doing this in the core, not in a driver... Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
3007 lines
74 KiB
C
3007 lines
74 KiB
C
/*
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* soc-dapm.c -- ALSA SoC Dynamic Audio Power Management
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*
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* Copyright 2005 Wolfson Microelectronics PLC.
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* Author: Liam Girdwood <lrg@slimlogic.co.uk>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* Features:
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* o Changes power status of internal codec blocks depending on the
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* dynamic configuration of codec internal audio paths and active
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* DACs/ADCs.
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* o Platform power domain - can support external components i.e. amps and
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* mic/meadphone insertion events.
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* o Automatic Mic Bias support
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* o Jack insertion power event initiation - e.g. hp insertion will enable
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* sinks, dacs, etc
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* o Delayed powerdown of audio susbsystem to reduce pops between a quick
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* device reopen.
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*
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* Todo:
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* o DAPM power change sequencing - allow for configurable per
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* codec sequences.
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* o Support for analogue bias optimisation.
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* o Support for reduced codec oversampling rates.
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* o Support for reduced codec bias currents.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/async.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/bitops.h>
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#include <linux/platform_device.h>
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#include <linux/jiffies.h>
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#include <linux/debugfs.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/initval.h>
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#include <trace/events/asoc.h>
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#define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
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/* dapm power sequences - make this per codec in the future */
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static int dapm_up_seq[] = {
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[snd_soc_dapm_pre] = 0,
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[snd_soc_dapm_supply] = 1,
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[snd_soc_dapm_micbias] = 2,
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[snd_soc_dapm_aif_in] = 3,
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[snd_soc_dapm_aif_out] = 3,
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[snd_soc_dapm_mic] = 4,
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[snd_soc_dapm_mux] = 5,
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[snd_soc_dapm_virt_mux] = 5,
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[snd_soc_dapm_value_mux] = 5,
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[snd_soc_dapm_dac] = 6,
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[snd_soc_dapm_mixer] = 7,
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[snd_soc_dapm_mixer_named_ctl] = 7,
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[snd_soc_dapm_pga] = 8,
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[snd_soc_dapm_adc] = 9,
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[snd_soc_dapm_out_drv] = 10,
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[snd_soc_dapm_hp] = 10,
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[snd_soc_dapm_spk] = 10,
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[snd_soc_dapm_post] = 11,
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};
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static int dapm_down_seq[] = {
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[snd_soc_dapm_pre] = 0,
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[snd_soc_dapm_adc] = 1,
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[snd_soc_dapm_hp] = 2,
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[snd_soc_dapm_spk] = 2,
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[snd_soc_dapm_out_drv] = 2,
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[snd_soc_dapm_pga] = 4,
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[snd_soc_dapm_mixer_named_ctl] = 5,
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[snd_soc_dapm_mixer] = 5,
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[snd_soc_dapm_dac] = 6,
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[snd_soc_dapm_mic] = 7,
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[snd_soc_dapm_micbias] = 8,
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[snd_soc_dapm_mux] = 9,
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[snd_soc_dapm_virt_mux] = 9,
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[snd_soc_dapm_value_mux] = 9,
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[snd_soc_dapm_aif_in] = 10,
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[snd_soc_dapm_aif_out] = 10,
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[snd_soc_dapm_supply] = 11,
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[snd_soc_dapm_post] = 12,
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};
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static void pop_wait(u32 pop_time)
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{
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if (pop_time)
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schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
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}
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static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
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{
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va_list args;
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char *buf;
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if (!pop_time)
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return;
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buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
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if (buf == NULL)
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return;
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va_start(args, fmt);
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vsnprintf(buf, PAGE_SIZE, fmt, args);
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dev_info(dev, "%s", buf);
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va_end(args);
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kfree(buf);
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}
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static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
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{
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return !list_empty(&w->dirty);
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}
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void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
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{
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if (!dapm_dirty_widget(w)) {
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dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
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w->name, reason);
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list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
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}
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}
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EXPORT_SYMBOL_GPL(dapm_mark_dirty);
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/* create a new dapm widget */
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static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
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const struct snd_soc_dapm_widget *_widget)
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{
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return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
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}
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/* get snd_card from DAPM context */
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static inline struct snd_card *dapm_get_snd_card(
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struct snd_soc_dapm_context *dapm)
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{
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if (dapm->codec)
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return dapm->codec->card->snd_card;
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else if (dapm->platform)
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return dapm->platform->card->snd_card;
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else
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BUG();
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/* unreachable */
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return NULL;
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}
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/* get soc_card from DAPM context */
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static inline struct snd_soc_card *dapm_get_soc_card(
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struct snd_soc_dapm_context *dapm)
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{
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if (dapm->codec)
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return dapm->codec->card;
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else if (dapm->platform)
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return dapm->platform->card;
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else
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BUG();
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/* unreachable */
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return NULL;
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}
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static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg)
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{
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if (w->codec)
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return snd_soc_read(w->codec, reg);
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else if (w->platform)
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return snd_soc_platform_read(w->platform, reg);
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dev_err(w->dapm->dev, "no valid widget read method\n");
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return -1;
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}
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static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val)
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{
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if (w->codec)
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return snd_soc_write(w->codec, reg, val);
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else if (w->platform)
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return snd_soc_platform_write(w->platform, reg, val);
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dev_err(w->dapm->dev, "no valid widget write method\n");
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return -1;
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}
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static int soc_widget_update_bits(struct snd_soc_dapm_widget *w,
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unsigned short reg, unsigned int mask, unsigned int value)
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{
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int change;
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unsigned int old, new;
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int ret;
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ret = soc_widget_read(w, reg);
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if (ret < 0)
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return ret;
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old = ret;
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new = (old & ~mask) | (value & mask);
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change = old != new;
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if (change) {
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ret = soc_widget_write(w, reg, new);
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if (ret < 0)
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return ret;
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}
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return change;
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}
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/**
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* snd_soc_dapm_set_bias_level - set the bias level for the system
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* @dapm: DAPM context
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* @level: level to configure
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*
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* Configure the bias (power) levels for the SoC audio device.
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*
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* Returns 0 for success else error.
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*/
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static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
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enum snd_soc_bias_level level)
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{
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struct snd_soc_card *card = dapm->card;
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int ret = 0;
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trace_snd_soc_bias_level_start(card, level);
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if (card && card->set_bias_level)
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ret = card->set_bias_level(card, dapm, level);
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if (ret != 0)
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goto out;
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if (dapm->codec) {
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if (dapm->codec->driver->set_bias_level)
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ret = dapm->codec->driver->set_bias_level(dapm->codec,
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level);
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else
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dapm->bias_level = level;
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}
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if (ret != 0)
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goto out;
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if (card && card->set_bias_level_post)
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ret = card->set_bias_level_post(card, dapm, level);
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out:
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trace_snd_soc_bias_level_done(card, level);
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return ret;
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}
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/* set up initial codec paths */
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static void dapm_set_path_status(struct snd_soc_dapm_widget *w,
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struct snd_soc_dapm_path *p, int i)
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{
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switch (w->id) {
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case snd_soc_dapm_switch:
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case snd_soc_dapm_mixer:
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case snd_soc_dapm_mixer_named_ctl: {
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int val;
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struct soc_mixer_control *mc = (struct soc_mixer_control *)
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w->kcontrol_news[i].private_value;
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unsigned int reg = mc->reg;
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unsigned int shift = mc->shift;
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int max = mc->max;
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unsigned int mask = (1 << fls(max)) - 1;
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unsigned int invert = mc->invert;
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val = soc_widget_read(w, reg);
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val = (val >> shift) & mask;
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if ((invert && !val) || (!invert && val))
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p->connect = 1;
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else
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p->connect = 0;
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}
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break;
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case snd_soc_dapm_mux: {
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struct soc_enum *e = (struct soc_enum *)
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w->kcontrol_news[i].private_value;
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int val, item, bitmask;
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for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
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;
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val = soc_widget_read(w, e->reg);
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item = (val >> e->shift_l) & (bitmask - 1);
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p->connect = 0;
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for (i = 0; i < e->max; i++) {
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if (!(strcmp(p->name, e->texts[i])) && item == i)
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p->connect = 1;
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}
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}
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break;
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case snd_soc_dapm_virt_mux: {
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struct soc_enum *e = (struct soc_enum *)
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w->kcontrol_news[i].private_value;
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p->connect = 0;
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/* since a virtual mux has no backing registers to
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* decide which path to connect, it will try to match
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* with the first enumeration. This is to ensure
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* that the default mux choice (the first) will be
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* correctly powered up during initialization.
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*/
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if (!strcmp(p->name, e->texts[0]))
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p->connect = 1;
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}
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break;
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case snd_soc_dapm_value_mux: {
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struct soc_enum *e = (struct soc_enum *)
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w->kcontrol_news[i].private_value;
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int val, item;
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val = soc_widget_read(w, e->reg);
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val = (val >> e->shift_l) & e->mask;
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for (item = 0; item < e->max; item++) {
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if (val == e->values[item])
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break;
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}
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p->connect = 0;
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for (i = 0; i < e->max; i++) {
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if (!(strcmp(p->name, e->texts[i])) && item == i)
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p->connect = 1;
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}
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}
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break;
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/* does not affect routing - always connected */
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case snd_soc_dapm_pga:
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case snd_soc_dapm_out_drv:
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case snd_soc_dapm_output:
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case snd_soc_dapm_adc:
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case snd_soc_dapm_input:
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case snd_soc_dapm_dac:
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case snd_soc_dapm_micbias:
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case snd_soc_dapm_vmid:
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case snd_soc_dapm_supply:
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case snd_soc_dapm_aif_in:
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case snd_soc_dapm_aif_out:
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case snd_soc_dapm_hp:
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case snd_soc_dapm_mic:
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case snd_soc_dapm_spk:
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case snd_soc_dapm_line:
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p->connect = 1;
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break;
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/* does affect routing - dynamically connected */
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case snd_soc_dapm_pre:
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case snd_soc_dapm_post:
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p->connect = 0;
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break;
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}
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}
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/* connect mux widget to its interconnecting audio paths */
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static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
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struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
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struct snd_soc_dapm_path *path, const char *control_name,
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const struct snd_kcontrol_new *kcontrol)
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{
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struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
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int i;
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for (i = 0; i < e->max; i++) {
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if (!(strcmp(control_name, e->texts[i]))) {
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list_add(&path->list, &dapm->card->paths);
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list_add(&path->list_sink, &dest->sources);
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list_add(&path->list_source, &src->sinks);
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path->name = (char*)e->texts[i];
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dapm_set_path_status(dest, path, 0);
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return 0;
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}
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}
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return -ENODEV;
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}
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/* connect mixer widget to its interconnecting audio paths */
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static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
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struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
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struct snd_soc_dapm_path *path, const char *control_name)
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{
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int i;
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/* search for mixer kcontrol */
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for (i = 0; i < dest->num_kcontrols; i++) {
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if (!strcmp(control_name, dest->kcontrol_news[i].name)) {
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list_add(&path->list, &dapm->card->paths);
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list_add(&path->list_sink, &dest->sources);
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list_add(&path->list_source, &src->sinks);
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path->name = dest->kcontrol_news[i].name;
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dapm_set_path_status(dest, path, i);
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return 0;
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}
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}
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return -ENODEV;
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}
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|
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static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
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struct snd_soc_dapm_widget *kcontrolw,
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const struct snd_kcontrol_new *kcontrol_new,
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struct snd_kcontrol **kcontrol)
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{
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struct snd_soc_dapm_widget *w;
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int i;
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*kcontrol = NULL;
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list_for_each_entry(w, &dapm->card->widgets, list) {
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if (w == kcontrolw || w->dapm != kcontrolw->dapm)
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continue;
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for (i = 0; i < w->num_kcontrols; i++) {
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if (&w->kcontrol_news[i] == kcontrol_new) {
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if (w->kcontrols)
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*kcontrol = w->kcontrols[i];
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return 1;
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}
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}
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}
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|
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return 0;
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}
|
|
|
|
/* create new dapm mixer control */
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static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
|
|
{
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struct snd_soc_dapm_context *dapm = w->dapm;
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int i, ret = 0;
|
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size_t name_len, prefix_len;
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struct snd_soc_dapm_path *path;
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struct snd_card *card = dapm->card->snd_card;
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|
const char *prefix;
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struct snd_soc_dapm_widget_list *wlist;
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size_t wlistsize;
|
|
|
|
if (dapm->codec)
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prefix = dapm->codec->name_prefix;
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else
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prefix = NULL;
|
|
|
|
if (prefix)
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|
prefix_len = strlen(prefix) + 1;
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|
else
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|
prefix_len = 0;
|
|
|
|
/* add kcontrol */
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for (i = 0; i < w->num_kcontrols; i++) {
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|
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/* match name */
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list_for_each_entry(path, &w->sources, list_sink) {
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|
|
/* mixer/mux paths name must match control name */
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if (path->name != (char *)w->kcontrol_news[i].name)
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continue;
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|
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if (w->kcontrols[i]) {
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path->kcontrol = w->kcontrols[i];
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continue;
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}
|
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|
|
wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
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sizeof(struct snd_soc_dapm_widget *),
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wlist = kzalloc(wlistsize, GFP_KERNEL);
|
|
if (wlist == NULL) {
|
|
dev_err(dapm->dev,
|
|
"asoc: can't allocate widget list for %s\n",
|
|
w->name);
|
|
return -ENOMEM;
|
|
}
|
|
wlist->num_widgets = 1;
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|
wlist->widgets[0] = w;
|
|
|
|
/* 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->kcontrol_news[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) {
|
|
kfree(wlist);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
switch (w->id) {
|
|
default:
|
|
/* The control will get a prefix from
|
|
* the control creation process but
|
|
* we're also using the same prefix
|
|
* for widgets so cut the prefix off
|
|
* the front of the widget name.
|
|
*/
|
|
snprintf(path->long_name, name_len, "%s %s",
|
|
w->name + prefix_len,
|
|
w->kcontrol_news[i].name);
|
|
break;
|
|
case snd_soc_dapm_mixer_named_ctl:
|
|
snprintf(path->long_name, name_len, "%s",
|
|
w->kcontrol_news[i].name);
|
|
break;
|
|
}
|
|
|
|
path->long_name[name_len - 1] = '\0';
|
|
|
|
path->kcontrol = snd_soc_cnew(&w->kcontrol_news[i],
|
|
wlist, path->long_name,
|
|
prefix);
|
|
ret = snd_ctl_add(card, path->kcontrol);
|
|
if (ret < 0) {
|
|
dev_err(dapm->dev,
|
|
"asoc: failed to add dapm kcontrol %s: %d\n",
|
|
path->long_name, ret);
|
|
kfree(wlist);
|
|
kfree(path->long_name);
|
|
path->long_name = NULL;
|
|
return ret;
|
|
}
|
|
w->kcontrols[i] = path->kcontrol;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* create new dapm mux control */
|
|
static int dapm_new_mux(struct snd_soc_dapm_widget *w)
|
|
{
|
|
struct snd_soc_dapm_context *dapm = w->dapm;
|
|
struct snd_soc_dapm_path *path = NULL;
|
|
struct snd_kcontrol *kcontrol;
|
|
struct snd_card *card = dapm->card->snd_card;
|
|
const char *prefix;
|
|
size_t prefix_len;
|
|
int ret;
|
|
struct snd_soc_dapm_widget_list *wlist;
|
|
int shared, wlistentries;
|
|
size_t wlistsize;
|
|
char *name;
|
|
|
|
if (w->num_kcontrols != 1) {
|
|
dev_err(dapm->dev,
|
|
"asoc: mux %s has incorrect number of controls\n",
|
|
w->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[0],
|
|
&kcontrol);
|
|
if (kcontrol) {
|
|
wlist = kcontrol->private_data;
|
|
wlistentries = wlist->num_widgets + 1;
|
|
} else {
|
|
wlist = NULL;
|
|
wlistentries = 1;
|
|
}
|
|
wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
|
|
wlistentries * sizeof(struct snd_soc_dapm_widget *),
|
|
wlist = krealloc(wlist, wlistsize, GFP_KERNEL);
|
|
if (wlist == NULL) {
|
|
dev_err(dapm->dev,
|
|
"asoc: can't allocate widget list for %s\n", w->name);
|
|
return -ENOMEM;
|
|
}
|
|
wlist->num_widgets = wlistentries;
|
|
wlist->widgets[wlistentries - 1] = w;
|
|
|
|
if (!kcontrol) {
|
|
if (dapm->codec)
|
|
prefix = dapm->codec->name_prefix;
|
|
else
|
|
prefix = NULL;
|
|
|
|
if (shared) {
|
|
name = w->kcontrol_news[0].name;
|
|
prefix_len = 0;
|
|
} else {
|
|
name = w->name;
|
|
if (prefix)
|
|
prefix_len = strlen(prefix) + 1;
|
|
else
|
|
prefix_len = 0;
|
|
}
|
|
|
|
/*
|
|
* The control will get a prefix from the control creation
|
|
* process but we're also using the same prefix for widgets so
|
|
* cut the prefix off the front of the widget name.
|
|
*/
|
|
kcontrol = snd_soc_cnew(&w->kcontrol_news[0], wlist,
|
|
name + prefix_len, prefix);
|
|
ret = snd_ctl_add(card, kcontrol);
|
|
if (ret < 0) {
|
|
dev_err(dapm->dev, "failed to add kcontrol %s: %d\n",
|
|
w->name, ret);
|
|
kfree(wlist);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
kcontrol->private_data = wlist;
|
|
|
|
w->kcontrols[0] = kcontrol;
|
|
|
|
list_for_each_entry(path, &w->sources, list_sink)
|
|
path->kcontrol = kcontrol;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* create new dapm volume control */
|
|
static int dapm_new_pga(struct snd_soc_dapm_widget *w)
|
|
{
|
|
if (w->num_kcontrols)
|
|
dev_err(w->dapm->dev,
|
|
"asoc: PGA controls not supported: '%s'\n", w->name);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* reset 'walked' bit for each dapm path */
|
|
static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
struct snd_soc_dapm_path *p;
|
|
|
|
list_for_each_entry(p, &dapm->card->paths, list)
|
|
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)
|
|
{
|
|
int level = snd_power_get_state(widget->dapm->card->snd_card);
|
|
|
|
switch (level) {
|
|
case SNDRV_CTL_POWER_D3hot:
|
|
case SNDRV_CTL_POWER_D3cold:
|
|
if (widget->ignore_suspend)
|
|
dev_dbg(widget->dapm->dev, "%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.
|
|
*/
|
|
static int is_connected_output_ep(struct snd_soc_dapm_widget *widget)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
int con = 0;
|
|
|
|
if (widget->outputs >= 0)
|
|
return widget->outputs;
|
|
|
|
DAPM_UPDATE_STAT(widget, path_checks);
|
|
|
|
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) {
|
|
widget->outputs = snd_soc_dapm_suspend_check(widget);
|
|
return widget->outputs;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (widget->connected) {
|
|
/* connected pin ? */
|
|
if (widget->id == snd_soc_dapm_output && !widget->ext) {
|
|
widget->outputs = snd_soc_dapm_suspend_check(widget);
|
|
return widget->outputs;
|
|
}
|
|
|
|
/* 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))) {
|
|
widget->outputs = snd_soc_dapm_suspend_check(widget);
|
|
return widget->outputs;
|
|
}
|
|
}
|
|
|
|
list_for_each_entry(path, &widget->sinks, list_source) {
|
|
DAPM_UPDATE_STAT(widget, neighbour_checks);
|
|
|
|
if (path->weak)
|
|
continue;
|
|
|
|
if (path->walked)
|
|
continue;
|
|
|
|
if (path->sink && path->connect) {
|
|
path->walked = 1;
|
|
con += is_connected_output_ep(path->sink);
|
|
}
|
|
}
|
|
|
|
widget->outputs = con;
|
|
|
|
return con;
|
|
}
|
|
|
|
/*
|
|
* Recursively check for a completed path to an active or physically connected
|
|
* input widget. Returns number of complete paths.
|
|
*/
|
|
static int is_connected_input_ep(struct snd_soc_dapm_widget *widget)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
int con = 0;
|
|
|
|
if (widget->inputs >= 0)
|
|
return widget->inputs;
|
|
|
|
DAPM_UPDATE_STAT(widget, path_checks);
|
|
|
|
if (widget->id == snd_soc_dapm_supply)
|
|
return 0;
|
|
|
|
/* active stream ? */
|
|
switch (widget->id) {
|
|
case snd_soc_dapm_dac:
|
|
case snd_soc_dapm_aif_in:
|
|
if (widget->active) {
|
|
widget->inputs = snd_soc_dapm_suspend_check(widget);
|
|
return widget->inputs;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (widget->connected) {
|
|
/* connected pin ? */
|
|
if (widget->id == snd_soc_dapm_input && !widget->ext) {
|
|
widget->inputs = snd_soc_dapm_suspend_check(widget);
|
|
return widget->inputs;
|
|
}
|
|
|
|
/* connected VMID/Bias for lower pops */
|
|
if (widget->id == snd_soc_dapm_vmid) {
|
|
widget->inputs = snd_soc_dapm_suspend_check(widget);
|
|
return widget->inputs;
|
|
}
|
|
|
|
/* connected jack ? */
|
|
if (widget->id == snd_soc_dapm_mic ||
|
|
(widget->id == snd_soc_dapm_line &&
|
|
!list_empty(&widget->sinks))) {
|
|
widget->inputs = snd_soc_dapm_suspend_check(widget);
|
|
return widget->inputs;
|
|
}
|
|
|
|
}
|
|
|
|
list_for_each_entry(path, &widget->sources, list_sink) {
|
|
DAPM_UPDATE_STAT(widget, neighbour_checks);
|
|
|
|
if (path->weak)
|
|
continue;
|
|
|
|
if (path->walked)
|
|
continue;
|
|
|
|
if (path->source && path->connect) {
|
|
path->walked = 1;
|
|
con += is_connected_input_ep(path->source);
|
|
}
|
|
}
|
|
|
|
widget->inputs = con;
|
|
|
|
return con;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
|
|
soc_widget_update_bits(w, -(w->reg + 1),
|
|
w->mask << w->shift, val << w->shift);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(dapm_reg_event);
|
|
|
|
static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
|
|
{
|
|
if (w->power_checked)
|
|
return w->new_power;
|
|
|
|
if (w->force)
|
|
w->new_power = 1;
|
|
else
|
|
w->new_power = w->power_check(w);
|
|
|
|
w->power_checked = true;
|
|
|
|
return w->new_power;
|
|
}
|
|
|
|
/* 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;
|
|
|
|
DAPM_UPDATE_STAT(w, power_checks);
|
|
|
|
in = is_connected_input_ep(w);
|
|
dapm_clear_walk(w->dapm);
|
|
out = is_connected_output_ep(w);
|
|
dapm_clear_walk(w->dapm);
|
|
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;
|
|
|
|
DAPM_UPDATE_STAT(w, power_checks);
|
|
|
|
if (w->active) {
|
|
in = is_connected_input_ep(w);
|
|
dapm_clear_walk(w->dapm);
|
|
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;
|
|
|
|
DAPM_UPDATE_STAT(w, power_checks);
|
|
|
|
if (w->active) {
|
|
out = is_connected_output_ep(w);
|
|
dapm_clear_walk(w->dapm);
|
|
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;
|
|
|
|
DAPM_UPDATE_STAT(w, power_checks);
|
|
|
|
/* Check if one of our outputs is connected */
|
|
list_for_each_entry(path, &w->sinks, list_source) {
|
|
DAPM_UPDATE_STAT(w, neighbour_checks);
|
|
|
|
if (path->weak)
|
|
continue;
|
|
|
|
if (path->connected &&
|
|
!path->connected(path->source, path->sink))
|
|
continue;
|
|
|
|
if (!path->sink)
|
|
continue;
|
|
|
|
if (dapm_widget_power_check(path->sink))
|
|
return 1;
|
|
}
|
|
|
|
dapm_clear_walk(w->dapm);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
|
|
struct snd_soc_dapm_widget *b,
|
|
bool power_up)
|
|
{
|
|
int *sort;
|
|
|
|
if (power_up)
|
|
sort = dapm_up_seq;
|
|
else
|
|
sort = dapm_down_seq;
|
|
|
|
if (sort[a->id] != sort[b->id])
|
|
return sort[a->id] - sort[b->id];
|
|
if (a->subseq != b->subseq) {
|
|
if (power_up)
|
|
return a->subseq - b->subseq;
|
|
else
|
|
return b->subseq - a->subseq;
|
|
}
|
|
if (a->reg != b->reg)
|
|
return a->reg - b->reg;
|
|
if (a->dapm != b->dapm)
|
|
return (unsigned long)a->dapm - (unsigned long)b->dapm;
|
|
|
|
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,
|
|
bool power_up)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
list_for_each_entry(w, list, power_list)
|
|
if (dapm_seq_compare(new_widget, w, power_up) < 0) {
|
|
list_add_tail(&new_widget->power_list, &w->power_list);
|
|
return;
|
|
}
|
|
|
|
list_add_tail(&new_widget->power_list, list);
|
|
}
|
|
|
|
static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm,
|
|
struct snd_soc_dapm_widget *w, int event)
|
|
{
|
|
struct snd_soc_card *card = dapm->card;
|
|
const char *ev_name;
|
|
int power, ret;
|
|
|
|
switch (event) {
|
|
case SND_SOC_DAPM_PRE_PMU:
|
|
ev_name = "PRE_PMU";
|
|
power = 1;
|
|
break;
|
|
case SND_SOC_DAPM_POST_PMU:
|
|
ev_name = "POST_PMU";
|
|
power = 1;
|
|
break;
|
|
case SND_SOC_DAPM_PRE_PMD:
|
|
ev_name = "PRE_PMD";
|
|
power = 0;
|
|
break;
|
|
case SND_SOC_DAPM_POST_PMD:
|
|
ev_name = "POST_PMD";
|
|
power = 0;
|
|
break;
|
|
default:
|
|
BUG();
|
|
return;
|
|
}
|
|
|
|
if (w->power != power)
|
|
return;
|
|
|
|
if (w->event && (w->event_flags & event)) {
|
|
pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n",
|
|
w->name, ev_name);
|
|
trace_snd_soc_dapm_widget_event_start(w, event);
|
|
ret = w->event(w, NULL, event);
|
|
trace_snd_soc_dapm_widget_event_done(w, event);
|
|
if (ret < 0)
|
|
pr_err("%s: %s event failed: %d\n",
|
|
ev_name, w->name, ret);
|
|
}
|
|
}
|
|
|
|
/* Apply the coalesced changes from a DAPM sequence */
|
|
static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm,
|
|
struct list_head *pending)
|
|
{
|
|
struct snd_soc_card *card = dapm->card;
|
|
struct snd_soc_dapm_widget *w;
|
|
int reg, power;
|
|
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(dapm->dev, card->pop_time,
|
|
"pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
|
|
w->name, reg, value, mask);
|
|
|
|
/* Check for events */
|
|
dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU);
|
|
dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD);
|
|
}
|
|
|
|
if (reg >= 0) {
|
|
/* Any widget will do, they should all be updating the
|
|
* same register.
|
|
*/
|
|
w = list_first_entry(pending, struct snd_soc_dapm_widget,
|
|
power_list);
|
|
|
|
pop_dbg(dapm->dev, card->pop_time,
|
|
"pop test : Applying 0x%x/0x%x to %x in %dms\n",
|
|
value, mask, reg, card->pop_time);
|
|
pop_wait(card->pop_time);
|
|
soc_widget_update_bits(w, reg, mask, value);
|
|
}
|
|
|
|
list_for_each_entry(w, pending, power_list) {
|
|
dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU);
|
|
dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD);
|
|
}
|
|
}
|
|
|
|
/* 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_dapm_context *dapm,
|
|
struct list_head *list, int event, bool power_up)
|
|
{
|
|
struct snd_soc_dapm_widget *w, *n;
|
|
LIST_HEAD(pending);
|
|
int cur_sort = -1;
|
|
int cur_subseq = -1;
|
|
int cur_reg = SND_SOC_NOPM;
|
|
struct snd_soc_dapm_context *cur_dapm = NULL;
|
|
int ret, i;
|
|
int *sort;
|
|
|
|
if (power_up)
|
|
sort = dapm_up_seq;
|
|
else
|
|
sort = dapm_down_seq;
|
|
|
|
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 ||
|
|
w->dapm != cur_dapm || w->subseq != cur_subseq) {
|
|
if (!list_empty(&pending))
|
|
dapm_seq_run_coalesced(cur_dapm, &pending);
|
|
|
|
if (cur_dapm && cur_dapm->seq_notifier) {
|
|
for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
|
|
if (sort[i] == cur_sort)
|
|
cur_dapm->seq_notifier(cur_dapm,
|
|
i,
|
|
cur_subseq);
|
|
}
|
|
|
|
INIT_LIST_HEAD(&pending);
|
|
cur_sort = -1;
|
|
cur_subseq = INT_MIN;
|
|
cur_reg = SND_SOC_NOPM;
|
|
cur_dapm = NULL;
|
|
}
|
|
|
|
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;
|
|
|
|
default:
|
|
/* Queue it up for application */
|
|
cur_sort = sort[w->id];
|
|
cur_subseq = w->subseq;
|
|
cur_reg = w->reg;
|
|
cur_dapm = w->dapm;
|
|
list_move(&w->power_list, &pending);
|
|
break;
|
|
}
|
|
|
|
if (ret < 0)
|
|
dev_err(w->dapm->dev,
|
|
"Failed to apply widget power: %d\n", ret);
|
|
}
|
|
|
|
if (!list_empty(&pending))
|
|
dapm_seq_run_coalesced(cur_dapm, &pending);
|
|
|
|
if (cur_dapm && cur_dapm->seq_notifier) {
|
|
for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
|
|
if (sort[i] == cur_sort)
|
|
cur_dapm->seq_notifier(cur_dapm,
|
|
i, cur_subseq);
|
|
}
|
|
}
|
|
|
|
static void dapm_widget_update(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
struct snd_soc_dapm_update *update = dapm->update;
|
|
struct snd_soc_dapm_widget *w;
|
|
int ret;
|
|
|
|
if (!update)
|
|
return;
|
|
|
|
w = update->widget;
|
|
|
|
if (w->event &&
|
|
(w->event_flags & SND_SOC_DAPM_PRE_REG)) {
|
|
ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
|
|
if (ret != 0)
|
|
pr_err("%s DAPM pre-event failed: %d\n",
|
|
w->name, ret);
|
|
}
|
|
|
|
ret = snd_soc_update_bits(w->codec, update->reg, update->mask,
|
|
update->val);
|
|
if (ret < 0)
|
|
pr_err("%s DAPM update failed: %d\n", w->name, ret);
|
|
|
|
if (w->event &&
|
|
(w->event_flags & SND_SOC_DAPM_POST_REG)) {
|
|
ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
|
|
if (ret != 0)
|
|
pr_err("%s DAPM post-event failed: %d\n",
|
|
w->name, ret);
|
|
}
|
|
}
|
|
|
|
/* Async callback run prior to DAPM sequences - brings to _PREPARE if
|
|
* they're changing state.
|
|
*/
|
|
static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
|
|
{
|
|
struct snd_soc_dapm_context *d = data;
|
|
int ret;
|
|
|
|
/* If we're off and we're not supposed to be go into STANDBY */
|
|
if (d->bias_level == SND_SOC_BIAS_OFF &&
|
|
d->target_bias_level != SND_SOC_BIAS_OFF) {
|
|
ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
|
|
if (ret != 0)
|
|
dev_err(d->dev,
|
|
"Failed to turn on bias: %d\n", ret);
|
|
}
|
|
|
|
/* Prepare for a STADDBY->ON or ON->STANDBY transition */
|
|
if (d->bias_level != d->target_bias_level) {
|
|
ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
|
|
if (ret != 0)
|
|
dev_err(d->dev,
|
|
"Failed to prepare bias: %d\n", ret);
|
|
}
|
|
}
|
|
|
|
/* Async callback run prior to DAPM sequences - brings to their final
|
|
* state.
|
|
*/
|
|
static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
|
|
{
|
|
struct snd_soc_dapm_context *d = data;
|
|
int ret;
|
|
|
|
/* If we just powered the last thing off drop to standby bias */
|
|
if (d->bias_level == SND_SOC_BIAS_PREPARE &&
|
|
(d->target_bias_level == SND_SOC_BIAS_STANDBY ||
|
|
d->target_bias_level == SND_SOC_BIAS_OFF)) {
|
|
ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
|
|
if (ret != 0)
|
|
dev_err(d->dev, "Failed to apply standby bias: %d\n",
|
|
ret);
|
|
}
|
|
|
|
/* If we're in standby and can support bias off then do that */
|
|
if (d->bias_level == SND_SOC_BIAS_STANDBY &&
|
|
d->target_bias_level == SND_SOC_BIAS_OFF) {
|
|
ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
|
|
if (ret != 0)
|
|
dev_err(d->dev, "Failed to turn off bias: %d\n", ret);
|
|
}
|
|
|
|
/* If we just powered up then move to active bias */
|
|
if (d->bias_level == SND_SOC_BIAS_PREPARE &&
|
|
d->target_bias_level == SND_SOC_BIAS_ON) {
|
|
ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
|
|
if (ret != 0)
|
|
dev_err(d->dev, "Failed to apply active bias: %d\n",
|
|
ret);
|
|
}
|
|
}
|
|
|
|
static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
|
|
bool power, bool connect)
|
|
{
|
|
/* If a connection is being made or broken then that update
|
|
* will have marked the peer dirty, otherwise the widgets are
|
|
* not connected and this update has no impact. */
|
|
if (!connect)
|
|
return;
|
|
|
|
/* If the peer is already in the state we're moving to then we
|
|
* won't have an impact on it. */
|
|
if (power != peer->power)
|
|
dapm_mark_dirty(peer, "peer state change");
|
|
}
|
|
|
|
static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
|
|
struct list_head *up_list,
|
|
struct list_head *down_list)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
|
|
if (w->power == power)
|
|
return;
|
|
|
|
trace_snd_soc_dapm_widget_power(w, power);
|
|
|
|
/* If we changed our power state perhaps our neigbours changed
|
|
* also.
|
|
*/
|
|
list_for_each_entry(path, &w->sources, list_sink) {
|
|
if (path->source) {
|
|
dapm_widget_set_peer_power(path->source, power,
|
|
path->connect);
|
|
}
|
|
}
|
|
switch (w->id) {
|
|
case snd_soc_dapm_supply:
|
|
/* Supplies can't affect their outputs, only their inputs */
|
|
break;
|
|
default:
|
|
list_for_each_entry(path, &w->sinks, list_source) {
|
|
if (path->sink) {
|
|
dapm_widget_set_peer_power(path->sink, power,
|
|
path->connect);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (power)
|
|
dapm_seq_insert(w, up_list, true);
|
|
else
|
|
dapm_seq_insert(w, down_list, false);
|
|
|
|
w->power = power;
|
|
}
|
|
|
|
static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
|
|
struct list_head *up_list,
|
|
struct list_head *down_list)
|
|
{
|
|
int power;
|
|
|
|
switch (w->id) {
|
|
case snd_soc_dapm_pre:
|
|
dapm_seq_insert(w, down_list, false);
|
|
break;
|
|
case snd_soc_dapm_post:
|
|
dapm_seq_insert(w, up_list, true);
|
|
break;
|
|
|
|
default:
|
|
power = dapm_widget_power_check(w);
|
|
|
|
dapm_widget_set_power(w, power, up_list, down_list);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Scan each dapm widget for complete audio path.
|
|
* A complete path is a route that has valid endpoints i.e.:-
|
|
*
|
|
* o DAC to output pin.
|
|
* o Input Pin to ADC.
|
|
* o Input pin to Output pin (bypass, sidetone)
|
|
* o DAC to ADC (loopback).
|
|
*/
|
|
static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event)
|
|
{
|
|
struct snd_soc_card *card = dapm->card;
|
|
struct snd_soc_dapm_widget *w;
|
|
struct snd_soc_dapm_context *d;
|
|
LIST_HEAD(up_list);
|
|
LIST_HEAD(down_list);
|
|
LIST_HEAD(async_domain);
|
|
enum snd_soc_bias_level bias;
|
|
|
|
trace_snd_soc_dapm_start(card);
|
|
|
|
list_for_each_entry(d, &card->dapm_list, list) {
|
|
if (d->n_widgets || d->codec == NULL) {
|
|
if (d->idle_bias_off)
|
|
d->target_bias_level = SND_SOC_BIAS_OFF;
|
|
else
|
|
d->target_bias_level = SND_SOC_BIAS_STANDBY;
|
|
}
|
|
}
|
|
|
|
memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
|
|
|
|
list_for_each_entry(w, &card->widgets, list) {
|
|
w->power_checked = false;
|
|
w->inputs = -1;
|
|
w->outputs = -1;
|
|
}
|
|
|
|
/* Check which widgets we need to power and store them in
|
|
* lists indicating if they should be powered up or down. We
|
|
* only check widgets that have been flagged as dirty but note
|
|
* that new widgets may be added to the dirty list while we
|
|
* iterate.
|
|
*/
|
|
list_for_each_entry(w, &card->dapm_dirty, dirty) {
|
|
dapm_power_one_widget(w, &up_list, &down_list);
|
|
}
|
|
|
|
list_for_each_entry(w, &card->widgets, list) {
|
|
list_del_init(&w->dirty);
|
|
|
|
if (w->power) {
|
|
d = w->dapm;
|
|
|
|
/* Supplies and micbiases only bring the
|
|
* context up to STANDBY as unless something
|
|
* else is active and passing audio they
|
|
* generally don't require full power.
|
|
*/
|
|
switch (w->id) {
|
|
case snd_soc_dapm_supply:
|
|
case snd_soc_dapm_micbias:
|
|
if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
|
|
d->target_bias_level = SND_SOC_BIAS_STANDBY;
|
|
break;
|
|
default:
|
|
d->target_bias_level = SND_SOC_BIAS_ON;
|
|
break;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/* If there are no DAPM widgets then try to figure out power from the
|
|
* event type.
|
|
*/
|
|
if (!dapm->n_widgets) {
|
|
switch (event) {
|
|
case SND_SOC_DAPM_STREAM_START:
|
|
case SND_SOC_DAPM_STREAM_RESUME:
|
|
dapm->target_bias_level = SND_SOC_BIAS_ON;
|
|
break;
|
|
case SND_SOC_DAPM_STREAM_STOP:
|
|
if (dapm->codec->active)
|
|
dapm->target_bias_level = SND_SOC_BIAS_ON;
|
|
else
|
|
dapm->target_bias_level = SND_SOC_BIAS_STANDBY;
|
|
break;
|
|
case SND_SOC_DAPM_STREAM_SUSPEND:
|
|
dapm->target_bias_level = SND_SOC_BIAS_STANDBY;
|
|
break;
|
|
case SND_SOC_DAPM_STREAM_NOP:
|
|
dapm->target_bias_level = dapm->bias_level;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Force all contexts in the card to the same bias state if
|
|
* they're not ground referenced.
|
|
*/
|
|
bias = SND_SOC_BIAS_OFF;
|
|
list_for_each_entry(d, &card->dapm_list, list)
|
|
if (d->target_bias_level > bias)
|
|
bias = d->target_bias_level;
|
|
list_for_each_entry(d, &card->dapm_list, list)
|
|
if (!d->idle_bias_off)
|
|
d->target_bias_level = bias;
|
|
|
|
trace_snd_soc_dapm_walk_done(card);
|
|
|
|
/* Run all the bias changes in parallel */
|
|
list_for_each_entry(d, &dapm->card->dapm_list, list)
|
|
async_schedule_domain(dapm_pre_sequence_async, d,
|
|
&async_domain);
|
|
async_synchronize_full_domain(&async_domain);
|
|
|
|
/* Power down widgets first; try to avoid amplifying pops. */
|
|
dapm_seq_run(dapm, &down_list, event, false);
|
|
|
|
dapm_widget_update(dapm);
|
|
|
|
/* Now power up. */
|
|
dapm_seq_run(dapm, &up_list, event, true);
|
|
|
|
/* Run all the bias changes in parallel */
|
|
list_for_each_entry(d, &dapm->card->dapm_list, list)
|
|
async_schedule_domain(dapm_post_sequence_async, d,
|
|
&async_domain);
|
|
async_synchronize_full_domain(&async_domain);
|
|
|
|
pop_dbg(dapm->dev, card->pop_time,
|
|
"DAPM sequencing finished, waiting %dms\n", card->pop_time);
|
|
pop_wait(card->pop_time);
|
|
|
|
trace_snd_soc_dapm_done(card);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#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->dapm);
|
|
out = is_connected_output_ep(w);
|
|
dapm_clear_walk(w->dapm);
|
|
|
|
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;
|
|
|
|
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,
|
|
.llseek = default_llseek,
|
|
};
|
|
|
|
static int dapm_bias_open_file(struct inode *inode, struct file *file)
|
|
{
|
|
file->private_data = inode->i_private;
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct snd_soc_dapm_context *dapm = file->private_data;
|
|
char *level;
|
|
|
|
switch (dapm->bias_level) {
|
|
case SND_SOC_BIAS_ON:
|
|
level = "On\n";
|
|
break;
|
|
case SND_SOC_BIAS_PREPARE:
|
|
level = "Prepare\n";
|
|
break;
|
|
case SND_SOC_BIAS_STANDBY:
|
|
level = "Standby\n";
|
|
break;
|
|
case SND_SOC_BIAS_OFF:
|
|
level = "Off\n";
|
|
break;
|
|
default:
|
|
BUG();
|
|
level = "Unknown\n";
|
|
break;
|
|
}
|
|
|
|
return simple_read_from_buffer(user_buf, count, ppos, level,
|
|
strlen(level));
|
|
}
|
|
|
|
static const struct file_operations dapm_bias_fops = {
|
|
.open = dapm_bias_open_file,
|
|
.read = dapm_bias_read_file,
|
|
.llseek = default_llseek,
|
|
};
|
|
|
|
void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
|
|
struct dentry *parent)
|
|
{
|
|
struct dentry *d;
|
|
|
|
dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
|
|
|
|
if (!dapm->debugfs_dapm) {
|
|
printk(KERN_WARNING
|
|
"Failed to create DAPM debugfs directory\n");
|
|
return;
|
|
}
|
|
|
|
d = debugfs_create_file("bias_level", 0444,
|
|
dapm->debugfs_dapm, dapm,
|
|
&dapm_bias_fops);
|
|
if (!d)
|
|
dev_warn(dapm->dev,
|
|
"ASoC: Failed to create bias level debugfs file\n");
|
|
}
|
|
|
|
static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
|
|
{
|
|
struct snd_soc_dapm_context *dapm = w->dapm;
|
|
struct dentry *d;
|
|
|
|
if (!dapm->debugfs_dapm || !w->name)
|
|
return;
|
|
|
|
d = debugfs_create_file(w->name, 0444,
|
|
dapm->debugfs_dapm, w,
|
|
&dapm_widget_power_fops);
|
|
if (!d)
|
|
dev_warn(w->dapm->dev,
|
|
"ASoC: Failed to create %s debugfs file\n",
|
|
w->name);
|
|
}
|
|
|
|
static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
debugfs_remove_recursive(dapm->debugfs_dapm);
|
|
}
|
|
|
|
#else
|
|
void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
|
|
struct dentry *parent)
|
|
{
|
|
}
|
|
|
|
static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
|
|
{
|
|
}
|
|
|
|
static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
}
|
|
|
|
#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 change,
|
|
int mux, struct soc_enum *e)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
int found = 0;
|
|
|
|
if (widget->id != snd_soc_dapm_mux &&
|
|
widget->id != snd_soc_dapm_virt_mux &&
|
|
widget->id != snd_soc_dapm_value_mux)
|
|
return -ENODEV;
|
|
|
|
if (!change)
|
|
return 0;
|
|
|
|
/* find dapm widget path assoc with kcontrol */
|
|
list_for_each_entry(path, &widget->dapm->card->paths, list) {
|
|
if (path->kcontrol != kcontrol)
|
|
continue;
|
|
|
|
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[mux]))) {
|
|
path->connect = 1; /* new connection */
|
|
dapm_mark_dirty(path->source, "mux connection");
|
|
} else {
|
|
if (path->connect)
|
|
dapm_mark_dirty(path->source,
|
|
"mux disconnection");
|
|
path->connect = 0; /* old connection must be powered down */
|
|
}
|
|
}
|
|
|
|
if (found) {
|
|
dapm_mark_dirty(widget, "mux change");
|
|
dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
|
|
}
|
|
|
|
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 connect)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
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;
|
|
|
|
/* find dapm widget path assoc with kcontrol */
|
|
list_for_each_entry(path, &widget->dapm->card->paths, list) {
|
|
if (path->kcontrol != kcontrol)
|
|
continue;
|
|
|
|
/* found, now check type */
|
|
found = 1;
|
|
path->connect = connect;
|
|
dapm_mark_dirty(path->source, "mixer connection");
|
|
}
|
|
|
|
if (found) {
|
|
dapm_mark_dirty(widget, "mixer update");
|
|
dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* show dapm widget status in sys fs */
|
|
static ssize_t dapm_widget_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd =
|
|
container_of(dev, struct snd_soc_pcm_runtime, dev);
|
|
struct snd_soc_codec *codec =rtd->codec;
|
|
struct snd_soc_dapm_widget *w;
|
|
int count = 0;
|
|
char *state = "not set";
|
|
|
|
list_for_each_entry(w, &codec->card->widgets, list) {
|
|
if (w->dapm != &codec->dapm)
|
|
continue;
|
|
|
|
/* only display widgets that burnm power */
|
|
switch (w->id) {
|
|
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_out_drv:
|
|
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");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
switch (codec->dapm.bias_level) {
|
|
case SND_SOC_BIAS_ON:
|
|
state = "On";
|
|
break;
|
|
case SND_SOC_BIAS_PREPARE:
|
|
state = "Prepare";
|
|
break;
|
|
case SND_SOC_BIAS_STANDBY:
|
|
state = "Standby";
|
|
break;
|
|
case SND_SOC_BIAS_OFF:
|
|
state = "Off";
|
|
break;
|
|
}
|
|
count += sprintf(buf + count, "PM State: %s\n", state);
|
|
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
|
|
|
|
int snd_soc_dapm_sys_add(struct device *dev)
|
|
{
|
|
return device_create_file(dev, &dev_attr_dapm_widget);
|
|
}
|
|
|
|
static void snd_soc_dapm_sys_remove(struct device *dev)
|
|
{
|
|
device_remove_file(dev, &dev_attr_dapm_widget);
|
|
}
|
|
|
|
/* free all dapm widgets and resources */
|
|
static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
struct snd_soc_dapm_widget *w, *next_w;
|
|
struct snd_soc_dapm_path *p, *next_p;
|
|
|
|
list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
|
|
if (w->dapm != dapm)
|
|
continue;
|
|
list_del(&w->list);
|
|
/*
|
|
* remove source and sink paths associated to this widget.
|
|
* While removing the path, remove reference to it from both
|
|
* source and sink widgets so that path is removed only once.
|
|
*/
|
|
list_for_each_entry_safe(p, next_p, &w->sources, list_sink) {
|
|
list_del(&p->list_sink);
|
|
list_del(&p->list_source);
|
|
list_del(&p->list);
|
|
kfree(p->long_name);
|
|
kfree(p);
|
|
}
|
|
list_for_each_entry_safe(p, next_p, &w->sinks, list_source) {
|
|
list_del(&p->list_sink);
|
|
list_del(&p->list_source);
|
|
list_del(&p->list);
|
|
kfree(p->long_name);
|
|
kfree(p);
|
|
}
|
|
kfree(w->kcontrols);
|
|
kfree(w->name);
|
|
kfree(w);
|
|
}
|
|
}
|
|
|
|
static struct snd_soc_dapm_widget *dapm_find_widget(
|
|
struct snd_soc_dapm_context *dapm, const char *pin,
|
|
bool search_other_contexts)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
struct snd_soc_dapm_widget *fallback = NULL;
|
|
|
|
list_for_each_entry(w, &dapm->card->widgets, list) {
|
|
if (!strcmp(w->name, pin)) {
|
|
if (w->dapm == dapm)
|
|
return w;
|
|
else
|
|
fallback = w;
|
|
}
|
|
}
|
|
|
|
if (search_other_contexts)
|
|
return fallback;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
|
|
const char *pin, int status)
|
|
{
|
|
struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
|
|
|
|
if (!w) {
|
|
dev_err(dapm->dev, "dapm: unknown pin %s\n", pin);
|
|
return -EINVAL;
|
|
}
|
|
|
|
w->connected = status;
|
|
if (status == 0)
|
|
w->force = 0;
|
|
dapm_mark_dirty(w, "pin configuration");
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_sync - scan and power dapm paths
|
|
* @dapm: DAPM context
|
|
*
|
|
* Walks all dapm audio paths and powers widgets according to their
|
|
* stream or path usage.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
/*
|
|
* Suppress early reports (eg, jacks syncing their state) to avoid
|
|
* silly DAPM runs during card startup.
|
|
*/
|
|
if (!dapm->card || !dapm->card->instantiated)
|
|
return 0;
|
|
|
|
return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
|
|
|
|
static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
|
|
const struct snd_soc_dapm_route *route)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
|
|
struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
|
|
const char *sink;
|
|
const char *control = route->control;
|
|
const char *source;
|
|
char prefixed_sink[80];
|
|
char prefixed_source[80];
|
|
int ret = 0;
|
|
|
|
if (dapm->codec && dapm->codec->name_prefix) {
|
|
snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
|
|
dapm->codec->name_prefix, route->sink);
|
|
sink = prefixed_sink;
|
|
snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
|
|
dapm->codec->name_prefix, route->source);
|
|
source = prefixed_source;
|
|
} else {
|
|
sink = route->sink;
|
|
source = route->source;
|
|
}
|
|
|
|
/*
|
|
* find src and dest widgets over all widgets but favor a widget from
|
|
* current DAPM context
|
|
*/
|
|
list_for_each_entry(w, &dapm->card->widgets, list) {
|
|
if (!wsink && !(strcmp(w->name, sink))) {
|
|
wtsink = w;
|
|
if (w->dapm == dapm)
|
|
wsink = w;
|
|
continue;
|
|
}
|
|
if (!wsource && !(strcmp(w->name, source))) {
|
|
wtsource = w;
|
|
if (w->dapm == dapm)
|
|
wsource = w;
|
|
}
|
|
}
|
|
/* use widget from another DAPM context if not found from this */
|
|
if (!wsink)
|
|
wsink = wtsink;
|
|
if (!wsource)
|
|
wsource = wtsource;
|
|
|
|
if (wsource == NULL || wsink == NULL)
|
|
return -ENODEV;
|
|
|
|
path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
|
|
if (!path)
|
|
return -ENOMEM;
|
|
|
|
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);
|
|
|
|
/* check for external widgets */
|
|
if (wsink->id == snd_soc_dapm_input) {
|
|
if (wsource->id == snd_soc_dapm_micbias ||
|
|
wsource->id == snd_soc_dapm_mic ||
|
|
wsource->id == snd_soc_dapm_line ||
|
|
wsource->id == snd_soc_dapm_output)
|
|
wsink->ext = 1;
|
|
}
|
|
if (wsource->id == snd_soc_dapm_output) {
|
|
if (wsink->id == snd_soc_dapm_spk ||
|
|
wsink->id == snd_soc_dapm_hp ||
|
|
wsink->id == snd_soc_dapm_line ||
|
|
wsink->id == snd_soc_dapm_input)
|
|
wsource->ext = 1;
|
|
}
|
|
|
|
/* connect static paths */
|
|
if (control == NULL) {
|
|
list_add(&path->list, &dapm->card->paths);
|
|
list_add(&path->list_sink, &wsink->sources);
|
|
list_add(&path->list_source, &wsource->sinks);
|
|
path->connect = 1;
|
|
return 0;
|
|
}
|
|
|
|
/* connect dynamic paths */
|
|
switch (wsink->id) {
|
|
case snd_soc_dapm_adc:
|
|
case snd_soc_dapm_dac:
|
|
case snd_soc_dapm_pga:
|
|
case snd_soc_dapm_out_drv:
|
|
case snd_soc_dapm_input:
|
|
case snd_soc_dapm_output:
|
|
case snd_soc_dapm_micbias:
|
|
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, &dapm->card->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_virt_mux:
|
|
case snd_soc_dapm_value_mux:
|
|
ret = dapm_connect_mux(dapm, wsource, wsink, path, control,
|
|
&wsink->kcontrol_news[0]);
|
|
if (ret != 0)
|
|
goto err;
|
|
break;
|
|
case snd_soc_dapm_switch:
|
|
case snd_soc_dapm_mixer:
|
|
case snd_soc_dapm_mixer_named_ctl:
|
|
ret = dapm_connect_mixer(dapm, wsource, wsink, path, control);
|
|
if (ret != 0)
|
|
goto err;
|
|
break;
|
|
case snd_soc_dapm_hp:
|
|
case snd_soc_dapm_mic:
|
|
case snd_soc_dapm_line:
|
|
case snd_soc_dapm_spk:
|
|
list_add(&path->list, &dapm->card->paths);
|
|
list_add(&path->list_sink, &wsink->sources);
|
|
list_add(&path->list_source, &wsource->sinks);
|
|
path->connect = 0;
|
|
return 0;
|
|
}
|
|
return 0;
|
|
|
|
err:
|
|
dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n",
|
|
source, control, sink);
|
|
kfree(path);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_add_routes - Add routes between DAPM widgets
|
|
* @dapm: DAPM context
|
|
* @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_dapm_context *dapm,
|
|
const struct snd_soc_dapm_route *route, int num)
|
|
{
|
|
int i, ret;
|
|
|
|
for (i = 0; i < num; i++) {
|
|
ret = snd_soc_dapm_add_route(dapm, route);
|
|
if (ret < 0) {
|
|
dev_err(dapm->dev, "Failed to add route %s->%s\n",
|
|
route->source, route->sink);
|
|
return ret;
|
|
}
|
|
route++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
|
|
|
|
static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
|
|
const struct snd_soc_dapm_route *route)
|
|
{
|
|
struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
|
|
route->source,
|
|
true);
|
|
struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
|
|
route->sink,
|
|
true);
|
|
struct snd_soc_dapm_path *path;
|
|
int count = 0;
|
|
|
|
if (!source) {
|
|
dev_err(dapm->dev, "Unable to find source %s for weak route\n",
|
|
route->source);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!sink) {
|
|
dev_err(dapm->dev, "Unable to find sink %s for weak route\n",
|
|
route->sink);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (route->control || route->connected)
|
|
dev_warn(dapm->dev, "Ignoring control for weak route %s->%s\n",
|
|
route->source, route->sink);
|
|
|
|
list_for_each_entry(path, &source->sinks, list_source) {
|
|
if (path->sink == sink) {
|
|
path->weak = 1;
|
|
count++;
|
|
}
|
|
}
|
|
|
|
if (count == 0)
|
|
dev_err(dapm->dev, "No path found for weak route %s->%s\n",
|
|
route->source, route->sink);
|
|
if (count > 1)
|
|
dev_warn(dapm->dev, "%d paths found for weak route %s->%s\n",
|
|
count, route->source, route->sink);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
|
|
* @dapm: DAPM context
|
|
* @route: audio routes
|
|
* @num: number of routes
|
|
*
|
|
* Mark existing routes matching those specified in the passed array
|
|
* as being weak, meaning that they are ignored for the purpose of
|
|
* power decisions. The main intended use case is for sidetone paths
|
|
* which couple audio between other independent paths if they are both
|
|
* active in order to make the combination work better at the user
|
|
* level but which aren't intended to be "used".
|
|
*
|
|
* Note that CODEC drivers should not use this as sidetone type paths
|
|
* can frequently also be used as bypass paths.
|
|
*/
|
|
int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
|
|
const struct snd_soc_dapm_route *route, int num)
|
|
{
|
|
int i, err;
|
|
int ret = 0;
|
|
|
|
for (i = 0; i < num; i++) {
|
|
err = snd_soc_dapm_weak_route(dapm, route);
|
|
if (err)
|
|
ret = err;
|
|
route++;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
|
|
|
|
/**
|
|
* snd_soc_dapm_new_widgets - add new dapm widgets
|
|
* @dapm: DAPM context
|
|
*
|
|
* Checks the codec for any new dapm widgets and creates them if found.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
unsigned int val;
|
|
|
|
list_for_each_entry(w, &dapm->card->widgets, list)
|
|
{
|
|
if (w->new)
|
|
continue;
|
|
|
|
if (w->num_kcontrols) {
|
|
w->kcontrols = kzalloc(w->num_kcontrols *
|
|
sizeof(struct snd_kcontrol *),
|
|
GFP_KERNEL);
|
|
if (!w->kcontrols)
|
|
return -ENOMEM;
|
|
}
|
|
|
|
switch(w->id) {
|
|
case snd_soc_dapm_switch:
|
|
case snd_soc_dapm_mixer:
|
|
case snd_soc_dapm_mixer_named_ctl:
|
|
dapm_new_mixer(w);
|
|
break;
|
|
case snd_soc_dapm_mux:
|
|
case snd_soc_dapm_virt_mux:
|
|
case snd_soc_dapm_value_mux:
|
|
dapm_new_mux(w);
|
|
break;
|
|
case snd_soc_dapm_pga:
|
|
case snd_soc_dapm_out_drv:
|
|
dapm_new_pga(w);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* Read the initial power state from the device */
|
|
if (w->reg >= 0) {
|
|
val = soc_widget_read(w, w->reg);
|
|
val &= 1 << w->shift;
|
|
if (w->invert)
|
|
val = !val;
|
|
|
|
if (val)
|
|
w->power = 1;
|
|
}
|
|
|
|
w->new = 1;
|
|
|
|
dapm_mark_dirty(w, "new widget");
|
|
dapm_debugfs_add_widget(w);
|
|
}
|
|
|
|
dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
|
|
|
|
/**
|
|
* snd_soc_dapm_get_volsw - dapm mixer get callback
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to get the value of a dapm mixer control.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
|
|
struct snd_soc_dapm_widget *widget = wlist->widgets[0];
|
|
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;
|
|
|
|
ucontrol->value.integer.value[0] =
|
|
(snd_soc_read(widget->codec, reg) >> shift) & mask;
|
|
if (shift != rshift)
|
|
ucontrol->value.integer.value[1] =
|
|
(snd_soc_read(widget->codec, reg) >> rshift) & mask;
|
|
if (invert) {
|
|
ucontrol->value.integer.value[0] =
|
|
max - ucontrol->value.integer.value[0];
|
|
if (shift != rshift)
|
|
ucontrol->value.integer.value[1] =
|
|
max - ucontrol->value.integer.value[1];
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
|
|
|
|
/**
|
|
* snd_soc_dapm_put_volsw - dapm mixer set callback
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to set the value of a dapm mixer control.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
|
|
struct snd_soc_dapm_widget *widget = wlist->widgets[0];
|
|
struct snd_soc_codec *codec = widget->codec;
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->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;
|
|
unsigned int val;
|
|
int connect, change;
|
|
struct snd_soc_dapm_update update;
|
|
int wi;
|
|
|
|
val = (ucontrol->value.integer.value[0] & mask);
|
|
|
|
if (invert)
|
|
val = max - val;
|
|
mask = mask << shift;
|
|
val = val << shift;
|
|
|
|
if (val)
|
|
/* new connection */
|
|
connect = invert ? 0 : 1;
|
|
else
|
|
/* old connection must be powered down */
|
|
connect = invert ? 1 : 0;
|
|
|
|
mutex_lock(&codec->mutex);
|
|
|
|
change = snd_soc_test_bits(widget->codec, reg, mask, val);
|
|
if (change) {
|
|
for (wi = 0; wi < wlist->num_widgets; wi++) {
|
|
widget = wlist->widgets[wi];
|
|
|
|
widget->value = val;
|
|
|
|
update.kcontrol = kcontrol;
|
|
update.widget = widget;
|
|
update.reg = reg;
|
|
update.mask = mask;
|
|
update.val = val;
|
|
widget->dapm->update = &update;
|
|
|
|
dapm_mixer_update_power(widget, kcontrol, connect);
|
|
|
|
widget->dapm->update = NULL;
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&codec->mutex);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
|
|
|
|
/**
|
|
* snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to get the value of a dapm enumerated double mixer control.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
|
|
struct snd_soc_dapm_widget *widget = wlist->widgets[0];
|
|
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
|
|
unsigned int val, bitmask;
|
|
|
|
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);
|
|
if (e->shift_l != e->shift_r)
|
|
ucontrol->value.enumerated.item[1] =
|
|
(val >> e->shift_r) & (bitmask - 1);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
|
|
|
|
/**
|
|
* snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Callback to set the value of a dapm enumerated double mixer control.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
|
|
struct snd_soc_dapm_widget *widget = wlist->widgets[0];
|
|
struct snd_soc_codec *codec = widget->codec;
|
|
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
|
|
unsigned int val, mux, change;
|
|
unsigned int mask, bitmask;
|
|
struct snd_soc_dapm_update update;
|
|
int wi;
|
|
|
|
for (bitmask = 1; bitmask < e->max; bitmask <<= 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->max - 1)
|
|
return -EINVAL;
|
|
val |= ucontrol->value.enumerated.item[1] << e->shift_r;
|
|
mask |= (bitmask - 1) << e->shift_r;
|
|
}
|
|
|
|
mutex_lock(&codec->mutex);
|
|
|
|
change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
|
|
if (change) {
|
|
for (wi = 0; wi < wlist->num_widgets; wi++) {
|
|
widget = wlist->widgets[wi];
|
|
|
|
widget->value = val;
|
|
|
|
update.kcontrol = kcontrol;
|
|
update.widget = widget;
|
|
update.reg = e->reg;
|
|
update.mask = mask;
|
|
update.val = val;
|
|
widget->dapm->update = &update;
|
|
|
|
dapm_mux_update_power(widget, kcontrol, change, mux, e);
|
|
|
|
widget->dapm->update = NULL;
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&codec->mutex);
|
|
return change;
|
|
}
|
|
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_list *wlist = snd_kcontrol_chip(kcontrol);
|
|
struct snd_soc_dapm_widget *widget = wlist->widgets[0];
|
|
|
|
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_list *wlist = snd_kcontrol_chip(kcontrol);
|
|
struct snd_soc_dapm_widget *widget = wlist->widgets[0];
|
|
struct snd_soc_codec *codec = widget->codec;
|
|
struct soc_enum *e =
|
|
(struct soc_enum *)kcontrol->private_value;
|
|
int change;
|
|
int ret = 0;
|
|
int wi;
|
|
|
|
if (ucontrol->value.enumerated.item[0] >= e->max)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&codec->mutex);
|
|
|
|
change = widget->value != ucontrol->value.enumerated.item[0];
|
|
if (change) {
|
|
for (wi = 0; wi < wlist->num_widgets; wi++) {
|
|
widget = wlist->widgets[wi];
|
|
|
|
widget->value = ucontrol->value.enumerated.item[0];
|
|
|
|
dapm_mux_update_power(widget, kcontrol, change,
|
|
widget->value, e);
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&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_list *wlist = snd_kcontrol_chip(kcontrol);
|
|
struct snd_soc_dapm_widget *widget = wlist->widgets[0];
|
|
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_list *wlist = snd_kcontrol_chip(kcontrol);
|
|
struct snd_soc_dapm_widget *widget = wlist->widgets[0];
|
|
struct snd_soc_codec *codec = widget->codec;
|
|
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
|
|
unsigned int val, mux, change;
|
|
unsigned int mask;
|
|
struct snd_soc_dapm_update update;
|
|
int wi;
|
|
|
|
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(&codec->mutex);
|
|
|
|
change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
|
|
if (change) {
|
|
for (wi = 0; wi < wlist->num_widgets; wi++) {
|
|
widget = wlist->widgets[wi];
|
|
|
|
widget->value = val;
|
|
|
|
update.kcontrol = kcontrol;
|
|
update.widget = widget;
|
|
update.reg = e->reg;
|
|
update.mask = mask;
|
|
update.val = val;
|
|
widget->dapm->update = &update;
|
|
|
|
dapm_mux_update_power(widget, kcontrol, change, mux, e);
|
|
|
|
widget->dapm->update = NULL;
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&codec->mutex);
|
|
return change;
|
|
}
|
|
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->dapm, 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->dapm, pin);
|
|
else
|
|
snd_soc_dapm_disable_pin(&codec->dapm, pin);
|
|
|
|
snd_soc_dapm_sync(&codec->dapm);
|
|
|
|
mutex_unlock(&codec->mutex);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
|
|
|
|
/**
|
|
* snd_soc_dapm_new_control - create new dapm control
|
|
* @dapm: DAPM context
|
|
* @widget: widget template
|
|
*
|
|
* Creates a new dapm control based upon the template.
|
|
*
|
|
* Returns 0 for success else error.
|
|
*/
|
|
int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
|
|
const struct snd_soc_dapm_widget *widget)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
size_t name_len;
|
|
|
|
if ((w = dapm_cnew_widget(widget)) == NULL)
|
|
return -ENOMEM;
|
|
|
|
name_len = strlen(widget->name) + 1;
|
|
if (dapm->codec && dapm->codec->name_prefix)
|
|
name_len += 1 + strlen(dapm->codec->name_prefix);
|
|
w->name = kmalloc(name_len, GFP_KERNEL);
|
|
if (w->name == NULL) {
|
|
kfree(w);
|
|
return -ENOMEM;
|
|
}
|
|
if (dapm->codec && dapm->codec->name_prefix)
|
|
snprintf(w->name, name_len, "%s %s",
|
|
dapm->codec->name_prefix, widget->name);
|
|
else
|
|
snprintf(w->name, name_len, "%s", widget->name);
|
|
|
|
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;
|
|
break;
|
|
case snd_soc_dapm_mux:
|
|
case snd_soc_dapm_virt_mux:
|
|
case snd_soc_dapm_value_mux:
|
|
w->power_check = dapm_generic_check_power;
|
|
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:
|
|
case snd_soc_dapm_out_drv:
|
|
case snd_soc_dapm_input:
|
|
case snd_soc_dapm_output:
|
|
case snd_soc_dapm_micbias:
|
|
case snd_soc_dapm_spk:
|
|
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;
|
|
break;
|
|
default:
|
|
w->power_check = dapm_always_on_check_power;
|
|
break;
|
|
}
|
|
|
|
dapm->n_widgets++;
|
|
w->dapm = dapm;
|
|
w->codec = dapm->codec;
|
|
w->platform = dapm->platform;
|
|
INIT_LIST_HEAD(&w->sources);
|
|
INIT_LIST_HEAD(&w->sinks);
|
|
INIT_LIST_HEAD(&w->list);
|
|
INIT_LIST_HEAD(&w->dirty);
|
|
list_add(&w->list, &dapm->card->widgets);
|
|
|
|
/* machine layer set ups unconnected pins and insertions */
|
|
w->connected = 1;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
|
|
|
|
/**
|
|
* snd_soc_dapm_new_controls - create new dapm controls
|
|
* @dapm: DAPM context
|
|
* @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_dapm_context *dapm,
|
|
const struct snd_soc_dapm_widget *widget,
|
|
int num)
|
|
{
|
|
int i, ret;
|
|
|
|
for (i = 0; i < num; i++) {
|
|
ret = snd_soc_dapm_new_control(dapm, widget);
|
|
if (ret < 0) {
|
|
dev_err(dapm->dev,
|
|
"ASoC: Failed to create DAPM control %s: %d\n",
|
|
widget->name, ret);
|
|
return ret;
|
|
}
|
|
widget++;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
|
|
|
|
static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm,
|
|
const char *stream, int event)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
list_for_each_entry(w, &dapm->card->widgets, list)
|
|
{
|
|
if (!w->sname || w->dapm != dapm)
|
|
continue;
|
|
dev_vdbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n",
|
|
w->name, w->sname, stream, event);
|
|
if (strstr(w->sname, stream)) {
|
|
dapm_mark_dirty(w, "stream event");
|
|
switch(event) {
|
|
case SND_SOC_DAPM_STREAM_START:
|
|
w->active = 1;
|
|
break;
|
|
case SND_SOC_DAPM_STREAM_STOP:
|
|
w->active = 0;
|
|
break;
|
|
case SND_SOC_DAPM_STREAM_SUSPEND:
|
|
case SND_SOC_DAPM_STREAM_RESUME:
|
|
case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
|
|
case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
dapm_power_widgets(dapm, event);
|
|
|
|
/* do we need to notify any clients that DAPM stream is complete */
|
|
if (dapm->stream_event)
|
|
dapm->stream_event(dapm, event);
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_stream_event - send a stream event to the dapm core
|
|
* @rtd: PCM runtime data
|
|
* @stream: stream name
|
|
* @event: stream event
|
|
*
|
|
* Sends a stream event to the dapm core. The core then makes any
|
|
* necessary widget power changes.
|
|
*
|
|
* Returns 0 for success else error.
|
|
*/
|
|
int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd,
|
|
const char *stream, int event)
|
|
{
|
|
struct snd_soc_codec *codec = rtd->codec;
|
|
|
|
if (stream == NULL)
|
|
return 0;
|
|
|
|
mutex_lock(&codec->mutex);
|
|
soc_dapm_stream_event(&codec->dapm, stream, event);
|
|
mutex_unlock(&codec->mutex);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_enable_pin - enable pin.
|
|
* @dapm: DAPM context
|
|
* @pin: pin name
|
|
*
|
|
* 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_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
|
|
{
|
|
return snd_soc_dapm_set_pin(dapm, pin, 1);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
|
|
|
|
/**
|
|
* snd_soc_dapm_force_enable_pin - force a pin to be enabled
|
|
* @dapm: DAPM context
|
|
* @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_dapm_context *dapm,
|
|
const char *pin)
|
|
{
|
|
struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
|
|
|
|
if (!w) {
|
|
dev_err(dapm->dev, "dapm: unknown pin %s\n", pin);
|
|
return -EINVAL;
|
|
}
|
|
|
|
dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin);
|
|
w->connected = 1;
|
|
w->force = 1;
|
|
dapm_mark_dirty(w, "force enable");
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
|
|
|
|
/**
|
|
* snd_soc_dapm_disable_pin - disable pin.
|
|
* @dapm: DAPM context
|
|
* @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_dapm_context *dapm,
|
|
const char *pin)
|
|
{
|
|
return snd_soc_dapm_set_pin(dapm, pin, 0);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
|
|
|
|
/**
|
|
* snd_soc_dapm_nc_pin - permanently disable pin.
|
|
* @dapm: DAPM context
|
|
* @pin: pin name
|
|
*
|
|
* 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.
|
|
*
|
|
* NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
|
|
* do any widget power switching.
|
|
*/
|
|
int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
|
|
{
|
|
return snd_soc_dapm_set_pin(dapm, pin, 0);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
|
|
|
|
/**
|
|
* snd_soc_dapm_get_pin_status - get audio pin status
|
|
* @dapm: DAPM context
|
|
* @pin: audio signal pin endpoint (or start point)
|
|
*
|
|
* Get audio pin status - connected or disconnected.
|
|
*
|
|
* Returns 1 for connected otherwise 0.
|
|
*/
|
|
int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
|
|
const char *pin)
|
|
{
|
|
struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
|
|
|
|
if (w)
|
|
return w->connected;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
|
|
|
|
/**
|
|
* snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
|
|
* @dapm: DAPM context
|
|
* @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_dapm_context *dapm,
|
|
const char *pin)
|
|
{
|
|
struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
|
|
|
|
if (!w) {
|
|
dev_err(dapm->dev, "dapm: unknown pin %s\n", pin);
|
|
return -EINVAL;
|
|
}
|
|
|
|
w->ignore_suspend = 1;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
|
|
|
|
/**
|
|
* snd_soc_dapm_free - free dapm resources
|
|
* @dapm: DAPM context
|
|
*
|
|
* Free all dapm widgets and resources.
|
|
*/
|
|
void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
snd_soc_dapm_sys_remove(dapm->dev);
|
|
dapm_debugfs_cleanup(dapm);
|
|
dapm_free_widgets(dapm);
|
|
list_del(&dapm->list);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
|
|
|
|
static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
LIST_HEAD(down_list);
|
|
int powerdown = 0;
|
|
|
|
list_for_each_entry(w, &dapm->card->widgets, list) {
|
|
if (w->dapm != dapm)
|
|
continue;
|
|
if (w->power) {
|
|
dapm_seq_insert(w, &down_list, false);
|
|
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(dapm, SND_SOC_BIAS_PREPARE);
|
|
dapm_seq_run(dapm, &down_list, 0, false);
|
|
snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_STANDBY);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* snd_soc_dapm_shutdown - callback for system shutdown
|
|
*/
|
|
void snd_soc_dapm_shutdown(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_codec *codec;
|
|
|
|
list_for_each_entry(codec, &card->codec_dev_list, list) {
|
|
soc_dapm_shutdown_codec(&codec->dapm);
|
|
snd_soc_dapm_set_bias_level(&codec->dapm, SND_SOC_BIAS_OFF);
|
|
}
|
|
}
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
|
|
MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
|
|
MODULE_LICENSE("GPL");
|