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d71f4cece4
Conflicts: sound/soc/codecs/ad1938.c
2218 lines
55 KiB
C
2218 lines
55 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/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-dapm.h>
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#include <sound/initval.h>
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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_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_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_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_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(u32 pop_time, const char *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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if (pop_time) {
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vprintk(fmt, args);
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}
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va_end(args);
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}
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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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/**
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* snd_soc_dapm_set_bias_level - set the bias level for the system
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* @socdev: audio device
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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_device *socdev,
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enum snd_soc_bias_level level)
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{
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struct snd_soc_card *card = socdev->card;
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struct snd_soc_codec *codec = socdev->card->codec;
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int ret = 0;
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switch (level) {
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case SND_SOC_BIAS_ON:
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dev_dbg(socdev->dev, "Setting full bias\n");
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break;
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case SND_SOC_BIAS_PREPARE:
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dev_dbg(socdev->dev, "Setting bias prepare\n");
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break;
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case SND_SOC_BIAS_STANDBY:
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dev_dbg(socdev->dev, "Setting standby bias\n");
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break;
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case SND_SOC_BIAS_OFF:
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dev_dbg(socdev->dev, "Setting bias off\n");
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break;
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default:
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dev_err(socdev->dev, "Setting invalid bias %d\n", level);
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return -EINVAL;
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}
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if (card->set_bias_level)
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ret = card->set_bias_level(card, level);
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if (ret == 0) {
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if (codec->set_bias_level)
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ret = codec->set_bias_level(codec, level);
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else
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codec->bias_level = level;
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}
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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->kcontrols[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 = snd_soc_read(w->codec, 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 *)w->kcontrols[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 = snd_soc_read(w->codec, 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_value_mux: {
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struct soc_enum *e = (struct soc_enum *)
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w->kcontrols[i].private_value;
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int val, item;
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val = snd_soc_read(w->codec, 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 effect routing - always connected */
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case snd_soc_dapm_pga:
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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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p->connect = 1;
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break;
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/* does effect routing - dynamically connected */
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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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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_codec *codec,
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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, &codec->dapm_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_codec *codec,
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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->kcontrols[i].name)) {
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list_add(&path->list, &codec->dapm_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->kcontrols[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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/* update dapm codec register bits */
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static int dapm_update_bits(struct snd_soc_dapm_widget *widget)
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{
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int change, power;
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unsigned int old, new;
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struct snd_soc_codec *codec = widget->codec;
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/* check for valid widgets */
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if (widget->reg < 0 || widget->id == snd_soc_dapm_input ||
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widget->id == snd_soc_dapm_output ||
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widget->id == snd_soc_dapm_hp ||
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widget->id == snd_soc_dapm_mic ||
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widget->id == snd_soc_dapm_line ||
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widget->id == snd_soc_dapm_spk)
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return 0;
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power = widget->power;
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if (widget->invert)
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power = (power ? 0:1);
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old = snd_soc_read(codec, widget->reg);
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new = (old & ~(0x1 << widget->shift)) | (power << widget->shift);
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change = old != new;
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if (change) {
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pop_dbg(codec->pop_time, "pop test %s : %s in %d ms\n",
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widget->name, widget->power ? "on" : "off",
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codec->pop_time);
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pop_wait(codec->pop_time);
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snd_soc_write(codec, widget->reg, new);
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}
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pr_debug("reg %x old %x new %x change %d\n", widget->reg,
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old, new, change);
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return change;
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}
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/* create new dapm mixer control */
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static int dapm_new_mixer(struct snd_soc_codec *codec,
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struct snd_soc_dapm_widget *w)
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{
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int i, ret = 0;
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size_t name_len;
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struct snd_soc_dapm_path *path;
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/* add kcontrol */
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for (i = 0; i < w->num_kcontrols; i++) {
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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->kcontrols[i].name)
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continue;
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/* add dapm control with long name.
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* for dapm_mixer this is the concatenation of the
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* mixer and kcontrol name.
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* for dapm_mixer_named_ctl this is simply the
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* kcontrol name.
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*/
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name_len = strlen(w->kcontrols[i].name) + 1;
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if (w->id != snd_soc_dapm_mixer_named_ctl)
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name_len += 1 + strlen(w->name);
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path->long_name = kmalloc(name_len, GFP_KERNEL);
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if (path->long_name == NULL)
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return -ENOMEM;
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switch (w->id) {
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default:
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snprintf(path->long_name, name_len, "%s %s",
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w->name, w->kcontrols[i].name);
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break;
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case snd_soc_dapm_mixer_named_ctl:
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snprintf(path->long_name, name_len, "%s",
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w->kcontrols[i].name);
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break;
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}
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path->long_name[name_len - 1] = '\0';
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path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w,
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path->long_name);
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ret = snd_ctl_add(codec->card, path->kcontrol);
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if (ret < 0) {
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printk(KERN_ERR "asoc: failed to add dapm kcontrol %s: %d\n",
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path->long_name,
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ret);
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kfree(path->long_name);
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path->long_name = NULL;
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return ret;
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}
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}
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}
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return ret;
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}
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/* create new dapm mux control */
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static int dapm_new_mux(struct snd_soc_codec *codec,
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struct snd_soc_dapm_widget *w)
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{
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struct snd_soc_dapm_path *path = NULL;
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struct snd_kcontrol *kcontrol;
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int ret = 0;
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if (!w->num_kcontrols) {
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printk(KERN_ERR "asoc: mux %s has no controls\n", w->name);
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return -EINVAL;
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}
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kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name);
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ret = snd_ctl_add(codec->card, kcontrol);
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if (ret < 0)
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goto err;
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list_for_each_entry(path, &w->sources, list_sink)
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path->kcontrol = kcontrol;
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return ret;
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err:
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printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name);
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return ret;
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}
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/* create new dapm volume control */
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static int dapm_new_pga(struct snd_soc_codec *codec,
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struct snd_soc_dapm_widget *w)
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{
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if (w->num_kcontrols)
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pr_err("asoc: PGA controls not supported: '%s'\n", w->name);
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return 0;
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}
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/* reset 'walked' bit for each dapm path */
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static inline void dapm_clear_walk(struct snd_soc_codec *codec)
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{
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struct snd_soc_dapm_path *p;
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list_for_each_entry(p, &codec->dapm_paths, list)
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p->walked = 0;
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}
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/* We implement power down on suspend by checking the power state of
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* the ALSA card - when we are suspending the ALSA state for the card
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* is set to D3.
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*/
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static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
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{
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struct snd_soc_codec *codec = widget->codec;
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switch (snd_power_get_state(codec->card)) {
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case SNDRV_CTL_POWER_D3hot:
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case SNDRV_CTL_POWER_D3cold:
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if (widget->ignore_suspend)
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pr_debug("%s ignoring suspend\n", widget->name);
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return widget->ignore_suspend;
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default:
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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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* Recursively check for a completed path to an active or physically connected
|
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* output widget. Returns number of complete paths.
|
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*/
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static int is_connected_output_ep(struct snd_soc_dapm_widget *widget)
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{
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struct snd_soc_dapm_path *path;
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int con = 0;
|
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|
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if (widget->id == snd_soc_dapm_supply)
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return 0;
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|
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switch (widget->id) {
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case snd_soc_dapm_adc:
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case snd_soc_dapm_aif_out:
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if (widget->active)
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return snd_soc_dapm_suspend_check(widget);
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default:
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break;
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}
|
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|
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if (widget->connected) {
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/* connected pin ? */
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if (widget->id == snd_soc_dapm_output && !widget->ext)
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return snd_soc_dapm_suspend_check(widget);
|
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|
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/* connected jack or spk ? */
|
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if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk ||
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(widget->id == snd_soc_dapm_line && !list_empty(&widget->sources)))
|
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return snd_soc_dapm_suspend_check(widget);
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}
|
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|
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list_for_each_entry(path, &widget->sinks, list_source) {
|
|
if (path->walked)
|
|
continue;
|
|
|
|
if (path->sink && path->connect) {
|
|
path->walked = 1;
|
|
con += is_connected_output_ep(path->sink);
|
|
}
|
|
}
|
|
|
|
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->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)
|
|
return snd_soc_dapm_suspend_check(widget);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (widget->connected) {
|
|
/* connected pin ? */
|
|
if (widget->id == snd_soc_dapm_input && !widget->ext)
|
|
return snd_soc_dapm_suspend_check(widget);
|
|
|
|
/* connected VMID/Bias for lower pops */
|
|
if (widget->id == snd_soc_dapm_vmid)
|
|
return snd_soc_dapm_suspend_check(widget);
|
|
|
|
/* connected jack ? */
|
|
if (widget->id == snd_soc_dapm_mic ||
|
|
(widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks)))
|
|
return snd_soc_dapm_suspend_check(widget);
|
|
}
|
|
|
|
list_for_each_entry(path, &widget->sources, list_sink) {
|
|
if (path->walked)
|
|
continue;
|
|
|
|
if (path->source && path->connect) {
|
|
path->walked = 1;
|
|
con += is_connected_input_ep(path->source);
|
|
}
|
|
}
|
|
|
|
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;
|
|
|
|
snd_soc_update_bits(w->codec, -(w->reg + 1),
|
|
w->mask << w->shift, val << w->shift);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(dapm_reg_event);
|
|
|
|
/* Standard power change method, used to apply power changes to most
|
|
* widgets.
|
|
*/
|
|
static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w)
|
|
{
|
|
int ret;
|
|
|
|
/* call any power change event handlers */
|
|
if (w->event)
|
|
pr_debug("power %s event for %s flags %x\n",
|
|
w->power ? "on" : "off",
|
|
w->name, w->event_flags);
|
|
|
|
/* power up pre event */
|
|
if (w->power && w->event &&
|
|
(w->event_flags & SND_SOC_DAPM_PRE_PMU)) {
|
|
ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
/* power down pre event */
|
|
if (!w->power && w->event &&
|
|
(w->event_flags & SND_SOC_DAPM_PRE_PMD)) {
|
|
ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
dapm_update_bits(w);
|
|
|
|
/* power up post event */
|
|
if (w->power && w->event &&
|
|
(w->event_flags & SND_SOC_DAPM_POST_PMU)) {
|
|
ret = w->event(w,
|
|
NULL, SND_SOC_DAPM_POST_PMU);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
/* power down post event */
|
|
if (!w->power && w->event &&
|
|
(w->event_flags & SND_SOC_DAPM_POST_PMD)) {
|
|
ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Generic check to see if a widget should be powered.
|
|
*/
|
|
static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
|
|
{
|
|
int in, out;
|
|
|
|
in = is_connected_input_ep(w);
|
|
dapm_clear_walk(w->codec);
|
|
out = is_connected_output_ep(w);
|
|
dapm_clear_walk(w->codec);
|
|
return out != 0 && in != 0;
|
|
}
|
|
|
|
/* Check to see if an ADC has power */
|
|
static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
|
|
{
|
|
int in;
|
|
|
|
if (w->active) {
|
|
in = is_connected_input_ep(w);
|
|
dapm_clear_walk(w->codec);
|
|
return in != 0;
|
|
} else {
|
|
return dapm_generic_check_power(w);
|
|
}
|
|
}
|
|
|
|
/* Check to see if a DAC has power */
|
|
static int dapm_dac_check_power(struct snd_soc_dapm_widget *w)
|
|
{
|
|
int out;
|
|
|
|
if (w->active) {
|
|
out = is_connected_output_ep(w);
|
|
dapm_clear_walk(w->codec);
|
|
return out != 0;
|
|
} else {
|
|
return dapm_generic_check_power(w);
|
|
}
|
|
}
|
|
|
|
/* Check to see if a power supply is needed */
|
|
static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
int power = 0;
|
|
|
|
/* Check if one of our outputs is connected */
|
|
list_for_each_entry(path, &w->sinks, list_source) {
|
|
if (path->connected &&
|
|
!path->connected(path->source, path->sink))
|
|
continue;
|
|
|
|
if (path->sink && path->sink->power_check &&
|
|
path->sink->power_check(path->sink)) {
|
|
power = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
dapm_clear_walk(w->codec);
|
|
|
|
return power;
|
|
}
|
|
|
|
static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
|
|
struct snd_soc_dapm_widget *b,
|
|
int sort[])
|
|
{
|
|
if (a->codec != b->codec)
|
|
return (unsigned long)a - (unsigned long)b;
|
|
if (sort[a->id] != sort[b->id])
|
|
return sort[a->id] - sort[b->id];
|
|
if (a->reg != b->reg)
|
|
return a->reg - b->reg;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Insert a widget in order into a DAPM power sequence. */
|
|
static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
|
|
struct list_head *list,
|
|
int sort[])
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
list_for_each_entry(w, list, power_list)
|
|
if (dapm_seq_compare(new_widget, w, sort) < 0) {
|
|
list_add_tail(&new_widget->power_list, &w->power_list);
|
|
return;
|
|
}
|
|
|
|
list_add_tail(&new_widget->power_list, list);
|
|
}
|
|
|
|
/* Apply the coalesced changes from a DAPM sequence */
|
|
static void dapm_seq_run_coalesced(struct snd_soc_codec *codec,
|
|
struct list_head *pending)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
int reg, power, ret;
|
|
unsigned int value = 0;
|
|
unsigned int mask = 0;
|
|
unsigned int cur_mask;
|
|
|
|
reg = list_first_entry(pending, struct snd_soc_dapm_widget,
|
|
power_list)->reg;
|
|
|
|
list_for_each_entry(w, pending, power_list) {
|
|
cur_mask = 1 << w->shift;
|
|
BUG_ON(reg != w->reg);
|
|
|
|
if (w->invert)
|
|
power = !w->power;
|
|
else
|
|
power = w->power;
|
|
|
|
mask |= cur_mask;
|
|
if (power)
|
|
value |= cur_mask;
|
|
|
|
pop_dbg(codec->pop_time,
|
|
"pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
|
|
w->name, reg, value, mask);
|
|
|
|
/* power up pre event */
|
|
if (w->power && w->event &&
|
|
(w->event_flags & SND_SOC_DAPM_PRE_PMU)) {
|
|
pop_dbg(codec->pop_time, "pop test : %s PRE_PMU\n",
|
|
w->name);
|
|
ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU);
|
|
if (ret < 0)
|
|
pr_err("%s: pre event failed: %d\n",
|
|
w->name, ret);
|
|
}
|
|
|
|
/* power down pre event */
|
|
if (!w->power && w->event &&
|
|
(w->event_flags & SND_SOC_DAPM_PRE_PMD)) {
|
|
pop_dbg(codec->pop_time, "pop test : %s PRE_PMD\n",
|
|
w->name);
|
|
ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD);
|
|
if (ret < 0)
|
|
pr_err("%s: pre event failed: %d\n",
|
|
w->name, ret);
|
|
}
|
|
}
|
|
|
|
if (reg >= 0) {
|
|
pop_dbg(codec->pop_time,
|
|
"pop test : Applying 0x%x/0x%x to %x in %dms\n",
|
|
value, mask, reg, codec->pop_time);
|
|
pop_wait(codec->pop_time);
|
|
snd_soc_update_bits(codec, reg, mask, value);
|
|
}
|
|
|
|
list_for_each_entry(w, pending, power_list) {
|
|
/* power up post event */
|
|
if (w->power && w->event &&
|
|
(w->event_flags & SND_SOC_DAPM_POST_PMU)) {
|
|
pop_dbg(codec->pop_time, "pop test : %s POST_PMU\n",
|
|
w->name);
|
|
ret = w->event(w,
|
|
NULL, SND_SOC_DAPM_POST_PMU);
|
|
if (ret < 0)
|
|
pr_err("%s: post event failed: %d\n",
|
|
w->name, ret);
|
|
}
|
|
|
|
/* power down post event */
|
|
if (!w->power && w->event &&
|
|
(w->event_flags & SND_SOC_DAPM_POST_PMD)) {
|
|
pop_dbg(codec->pop_time, "pop test : %s POST_PMD\n",
|
|
w->name);
|
|
ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD);
|
|
if (ret < 0)
|
|
pr_err("%s: post event failed: %d\n",
|
|
w->name, ret);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Apply a DAPM power sequence.
|
|
*
|
|
* We walk over a pre-sorted list of widgets to apply power to. In
|
|
* order to minimise the number of writes to the device required
|
|
* multiple widgets will be updated in a single write where possible.
|
|
* Currently anything that requires more than a single write is not
|
|
* handled.
|
|
*/
|
|
static void dapm_seq_run(struct snd_soc_codec *codec, struct list_head *list,
|
|
int event, int sort[])
|
|
{
|
|
struct snd_soc_dapm_widget *w, *n;
|
|
LIST_HEAD(pending);
|
|
int cur_sort = -1;
|
|
int cur_reg = SND_SOC_NOPM;
|
|
int ret;
|
|
|
|
list_for_each_entry_safe(w, n, list, power_list) {
|
|
ret = 0;
|
|
|
|
/* Do we need to apply any queued changes? */
|
|
if (sort[w->id] != cur_sort || w->reg != cur_reg) {
|
|
if (!list_empty(&pending))
|
|
dapm_seq_run_coalesced(codec, &pending);
|
|
|
|
INIT_LIST_HEAD(&pending);
|
|
cur_sort = -1;
|
|
cur_reg = SND_SOC_NOPM;
|
|
}
|
|
|
|
switch (w->id) {
|
|
case snd_soc_dapm_pre:
|
|
if (!w->event)
|
|
list_for_each_entry_safe_continue(w, n, list,
|
|
power_list);
|
|
|
|
if (event == SND_SOC_DAPM_STREAM_START)
|
|
ret = w->event(w,
|
|
NULL, SND_SOC_DAPM_PRE_PMU);
|
|
else if (event == SND_SOC_DAPM_STREAM_STOP)
|
|
ret = w->event(w,
|
|
NULL, SND_SOC_DAPM_PRE_PMD);
|
|
break;
|
|
|
|
case snd_soc_dapm_post:
|
|
if (!w->event)
|
|
list_for_each_entry_safe_continue(w, n, list,
|
|
power_list);
|
|
|
|
if (event == SND_SOC_DAPM_STREAM_START)
|
|
ret = w->event(w,
|
|
NULL, SND_SOC_DAPM_POST_PMU);
|
|
else if (event == SND_SOC_DAPM_STREAM_STOP)
|
|
ret = w->event(w,
|
|
NULL, SND_SOC_DAPM_POST_PMD);
|
|
break;
|
|
|
|
case snd_soc_dapm_input:
|
|
case snd_soc_dapm_output:
|
|
case snd_soc_dapm_hp:
|
|
case snd_soc_dapm_mic:
|
|
case snd_soc_dapm_line:
|
|
case snd_soc_dapm_spk:
|
|
/* No register support currently */
|
|
ret = dapm_generic_apply_power(w);
|
|
break;
|
|
|
|
default:
|
|
/* Queue it up for application */
|
|
cur_sort = sort[w->id];
|
|
cur_reg = w->reg;
|
|
list_move(&w->power_list, &pending);
|
|
break;
|
|
}
|
|
|
|
if (ret < 0)
|
|
pr_err("Failed to apply widget power: %d\n",
|
|
ret);
|
|
}
|
|
|
|
if (!list_empty(&pending))
|
|
dapm_seq_run_coalesced(codec, &pending);
|
|
}
|
|
|
|
/*
|
|
* Scan each dapm widget for complete audio path.
|
|
* A complete path is a route that has valid endpoints i.e.:-
|
|
*
|
|
* 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_codec *codec, int event)
|
|
{
|
|
struct snd_soc_device *socdev = codec->socdev;
|
|
struct snd_soc_dapm_widget *w;
|
|
LIST_HEAD(up_list);
|
|
LIST_HEAD(down_list);
|
|
int ret = 0;
|
|
int power;
|
|
int sys_power = 0;
|
|
|
|
/* Check which widgets we need to power and store them in
|
|
* lists indicating if they should be powered up or down.
|
|
*/
|
|
list_for_each_entry(w, &codec->dapm_widgets, list) {
|
|
switch (w->id) {
|
|
case snd_soc_dapm_pre:
|
|
dapm_seq_insert(w, &down_list, dapm_down_seq);
|
|
break;
|
|
case snd_soc_dapm_post:
|
|
dapm_seq_insert(w, &up_list, dapm_up_seq);
|
|
break;
|
|
|
|
default:
|
|
if (!w->power_check)
|
|
continue;
|
|
|
|
if (!w->force)
|
|
power = w->power_check(w);
|
|
else
|
|
power = 1;
|
|
if (power)
|
|
sys_power = 1;
|
|
|
|
if (w->power == power)
|
|
continue;
|
|
|
|
if (power)
|
|
dapm_seq_insert(w, &up_list, dapm_up_seq);
|
|
else
|
|
dapm_seq_insert(w, &down_list, dapm_down_seq);
|
|
|
|
w->power = power;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* If there are no DAPM widgets then try to figure out power from the
|
|
* event type.
|
|
*/
|
|
if (list_empty(&codec->dapm_widgets)) {
|
|
switch (event) {
|
|
case SND_SOC_DAPM_STREAM_START:
|
|
case SND_SOC_DAPM_STREAM_RESUME:
|
|
sys_power = 1;
|
|
break;
|
|
case SND_SOC_DAPM_STREAM_SUSPEND:
|
|
sys_power = 0;
|
|
break;
|
|
case SND_SOC_DAPM_STREAM_NOP:
|
|
switch (codec->bias_level) {
|
|
case SND_SOC_BIAS_STANDBY:
|
|
case SND_SOC_BIAS_OFF:
|
|
sys_power = 0;
|
|
break;
|
|
default:
|
|
sys_power = 1;
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (sys_power && codec->bias_level == SND_SOC_BIAS_OFF) {
|
|
ret = snd_soc_dapm_set_bias_level(socdev,
|
|
SND_SOC_BIAS_STANDBY);
|
|
if (ret != 0)
|
|
pr_err("Failed to turn on bias: %d\n", ret);
|
|
}
|
|
|
|
/* If we're changing to all on or all off then prepare */
|
|
if ((sys_power && codec->bias_level == SND_SOC_BIAS_STANDBY) ||
|
|
(!sys_power && codec->bias_level == SND_SOC_BIAS_ON)) {
|
|
ret = snd_soc_dapm_set_bias_level(socdev,
|
|
SND_SOC_BIAS_PREPARE);
|
|
if (ret != 0)
|
|
pr_err("Failed to prepare bias: %d\n", ret);
|
|
}
|
|
|
|
/* Power down widgets first; try to avoid amplifying pops. */
|
|
dapm_seq_run(codec, &down_list, event, dapm_down_seq);
|
|
|
|
/* Now power up. */
|
|
dapm_seq_run(codec, &up_list, event, dapm_up_seq);
|
|
|
|
/* If we just powered the last thing off drop to standby bias */
|
|
if (codec->bias_level == SND_SOC_BIAS_PREPARE && !sys_power) {
|
|
ret = snd_soc_dapm_set_bias_level(socdev,
|
|
SND_SOC_BIAS_STANDBY);
|
|
if (ret != 0)
|
|
pr_err("Failed to apply standby bias: %d\n", ret);
|
|
}
|
|
|
|
/* If we're in standby and can support bias off then do that */
|
|
if (codec->bias_level == SND_SOC_BIAS_STANDBY &&
|
|
codec->idle_bias_off) {
|
|
ret = snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_OFF);
|
|
if (ret != 0)
|
|
pr_err("Failed to turn off bias: %d\n", ret);
|
|
}
|
|
|
|
/* If we just powered up then move to active bias */
|
|
if (codec->bias_level == SND_SOC_BIAS_PREPARE && sys_power) {
|
|
ret = snd_soc_dapm_set_bias_level(socdev,
|
|
SND_SOC_BIAS_ON);
|
|
if (ret != 0)
|
|
pr_err("Failed to apply active bias: %d\n", ret);
|
|
}
|
|
|
|
pop_dbg(codec->pop_time, "DAPM sequencing finished, waiting %dms\n",
|
|
codec->pop_time);
|
|
pop_wait(codec->pop_time);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef 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->codec);
|
|
out = is_connected_output_ep(w);
|
|
dapm_clear_walk(w->codec);
|
|
|
|
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,
|
|
};
|
|
|
|
void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
struct dentry *d;
|
|
|
|
if (!codec->debugfs_dapm)
|
|
return;
|
|
|
|
list_for_each_entry(w, &codec->dapm_widgets, list) {
|
|
if (!w->name)
|
|
continue;
|
|
|
|
d = debugfs_create_file(w->name, 0444,
|
|
codec->debugfs_dapm, w,
|
|
&dapm_widget_power_fops);
|
|
if (!d)
|
|
printk(KERN_WARNING
|
|
"ASoC: Failed to create %s debugfs file\n",
|
|
w->name);
|
|
}
|
|
}
|
|
#else
|
|
void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/* test and update the power status of a mux widget */
|
|
static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
|
|
struct snd_kcontrol *kcontrol, int 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_value_mux)
|
|
return -ENODEV;
|
|
|
|
if (!change)
|
|
return 0;
|
|
|
|
/* find dapm widget path assoc with kcontrol */
|
|
list_for_each_entry(path, &widget->codec->dapm_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 */
|
|
else
|
|
path->connect = 0; /* old connection must be powered down */
|
|
}
|
|
|
|
if (found)
|
|
dapm_power_widgets(widget->codec, 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->codec->dapm_paths, list) {
|
|
if (path->kcontrol != kcontrol)
|
|
continue;
|
|
|
|
/* found, now check type */
|
|
found = 1;
|
|
path->connect = connect;
|
|
break;
|
|
}
|
|
|
|
if (found)
|
|
dapm_power_widgets(widget->codec, 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_device *devdata = dev_get_drvdata(dev);
|
|
struct snd_soc_codec *codec = devdata->card->codec;
|
|
struct snd_soc_dapm_widget *w;
|
|
int count = 0;
|
|
char *state = "not set";
|
|
|
|
list_for_each_entry(w, &codec->dapm_widgets, list) {
|
|
|
|
/* 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_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->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_codec *codec)
|
|
{
|
|
struct snd_soc_dapm_widget *w, *next_w;
|
|
struct snd_soc_dapm_path *p, *next_p;
|
|
|
|
list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) {
|
|
list_del(&w->list);
|
|
kfree(w);
|
|
}
|
|
|
|
list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) {
|
|
list_del(&p->list);
|
|
kfree(p->long_name);
|
|
kfree(p);
|
|
}
|
|
}
|
|
|
|
static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec,
|
|
const char *pin, int status)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
list_for_each_entry(w, &codec->dapm_widgets, list) {
|
|
if (!strcmp(w->name, pin)) {
|
|
pr_debug("dapm: %s: pin %s\n", codec->name, pin);
|
|
w->connected = status;
|
|
/* Allow disabling of forced pins */
|
|
if (status == 0)
|
|
w->force = 0;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_sync - scan and power dapm paths
|
|
* @codec: audio codec
|
|
*
|
|
* 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_codec *codec)
|
|
{
|
|
return dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
|
|
|
|
static int snd_soc_dapm_add_route(struct snd_soc_codec *codec,
|
|
const struct snd_soc_dapm_route *route)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
|
|
const char *sink = route->sink;
|
|
const char *control = route->control;
|
|
const char *source = route->source;
|
|
int ret = 0;
|
|
|
|
/* find src and dest widgets */
|
|
list_for_each_entry(w, &codec->dapm_widgets, list) {
|
|
|
|
if (!wsink && !(strcmp(w->name, sink))) {
|
|
wsink = w;
|
|
continue;
|
|
}
|
|
if (!wsource && !(strcmp(w->name, source))) {
|
|
wsource = w;
|
|
}
|
|
}
|
|
|
|
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, &codec->dapm_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_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, &codec->dapm_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_value_mux:
|
|
ret = dapm_connect_mux(codec, wsource, wsink, path, control,
|
|
&wsink->kcontrols[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(codec, 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, &codec->dapm_paths);
|
|
list_add(&path->list_sink, &wsink->sources);
|
|
list_add(&path->list_source, &wsource->sinks);
|
|
path->connect = 0;
|
|
return 0;
|
|
}
|
|
return 0;
|
|
|
|
err:
|
|
printk(KERN_WARNING "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
|
|
* @codec: codec
|
|
* @route: audio routes
|
|
* @num: number of routes
|
|
*
|
|
* Connects 2 dapm widgets together via a named audio path. The sink is
|
|
* the widget receiving the audio signal, whilst the source is the sender
|
|
* of the audio signal.
|
|
*
|
|
* Returns 0 for success else error. On error all resources can be freed
|
|
* with a call to snd_soc_card_free().
|
|
*/
|
|
int snd_soc_dapm_add_routes(struct snd_soc_codec *codec,
|
|
const struct snd_soc_dapm_route *route, int num)
|
|
{
|
|
int i, ret;
|
|
|
|
for (i = 0; i < num; i++) {
|
|
ret = snd_soc_dapm_add_route(codec, route);
|
|
if (ret < 0) {
|
|
printk(KERN_ERR "Failed to add route %s->%s\n",
|
|
route->source,
|
|
route->sink);
|
|
return ret;
|
|
}
|
|
route++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
|
|
|
|
/**
|
|
* snd_soc_dapm_new_widgets - add new dapm widgets
|
|
* @codec: audio codec
|
|
*
|
|
* 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_codec *codec)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
list_for_each_entry(w, &codec->dapm_widgets, list)
|
|
{
|
|
if (w->new)
|
|
continue;
|
|
|
|
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;
|
|
dapm_new_mixer(codec, w);
|
|
break;
|
|
case snd_soc_dapm_mux:
|
|
case snd_soc_dapm_value_mux:
|
|
w->power_check = dapm_generic_check_power;
|
|
dapm_new_mux(codec, w);
|
|
break;
|
|
case snd_soc_dapm_adc:
|
|
case snd_soc_dapm_aif_out:
|
|
w->power_check = dapm_adc_check_power;
|
|
break;
|
|
case snd_soc_dapm_dac:
|
|
case snd_soc_dapm_aif_in:
|
|
w->power_check = dapm_dac_check_power;
|
|
break;
|
|
case snd_soc_dapm_pga:
|
|
w->power_check = dapm_generic_check_power;
|
|
dapm_new_pga(codec, w);
|
|
break;
|
|
case snd_soc_dapm_input:
|
|
case snd_soc_dapm_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;
|
|
case snd_soc_dapm_vmid:
|
|
case snd_soc_dapm_pre:
|
|
case snd_soc_dapm_post:
|
|
break;
|
|
}
|
|
w->new = 1;
|
|
}
|
|
|
|
dapm_power_widgets(codec, 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 *widget = snd_kcontrol_chip(kcontrol);
|
|
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 *widget = snd_kcontrol_chip(kcontrol);
|
|
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 mask = (1 << fls(max)) - 1;
|
|
unsigned int invert = mc->invert;
|
|
unsigned int val, val2, val_mask;
|
|
int connect;
|
|
int ret;
|
|
|
|
val = (ucontrol->value.integer.value[0] & mask);
|
|
|
|
if (invert)
|
|
val = max - val;
|
|
val_mask = mask << shift;
|
|
val = val << shift;
|
|
if (shift != rshift) {
|
|
val2 = (ucontrol->value.integer.value[1] & mask);
|
|
if (invert)
|
|
val2 = max - val2;
|
|
val_mask |= mask << rshift;
|
|
val |= val2 << rshift;
|
|
}
|
|
|
|
mutex_lock(&widget->codec->mutex);
|
|
widget->value = val;
|
|
|
|
if (snd_soc_test_bits(widget->codec, reg, val_mask, val)) {
|
|
if (val)
|
|
/* new connection */
|
|
connect = invert ? 0:1;
|
|
else
|
|
/* old connection must be powered down */
|
|
connect = invert ? 1:0;
|
|
|
|
dapm_mixer_update_power(widget, kcontrol, connect);
|
|
}
|
|
|
|
if (widget->event) {
|
|
if (widget->event_flags & SND_SOC_DAPM_PRE_REG) {
|
|
ret = widget->event(widget, kcontrol,
|
|
SND_SOC_DAPM_PRE_REG);
|
|
if (ret < 0) {
|
|
ret = 1;
|
|
goto out;
|
|
}
|
|
}
|
|
ret = snd_soc_update_bits(widget->codec, reg, val_mask, val);
|
|
if (widget->event_flags & SND_SOC_DAPM_POST_REG)
|
|
ret = widget->event(widget, kcontrol,
|
|
SND_SOC_DAPM_POST_REG);
|
|
} else
|
|
ret = snd_soc_update_bits(widget->codec, reg, val_mask, val);
|
|
|
|
out:
|
|
mutex_unlock(&widget->codec->mutex);
|
|
return ret;
|
|
}
|
|
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 *widget = snd_kcontrol_chip(kcontrol);
|
|
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 *widget = snd_kcontrol_chip(kcontrol);
|
|
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
|
|
unsigned int val, mux, change;
|
|
unsigned int mask, bitmask;
|
|
int ret = 0;
|
|
|
|
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(&widget->codec->mutex);
|
|
widget->value = val;
|
|
change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
|
|
dapm_mux_update_power(widget, kcontrol, change, mux, e);
|
|
|
|
if (widget->event_flags & SND_SOC_DAPM_PRE_REG) {
|
|
ret = widget->event(widget,
|
|
kcontrol, SND_SOC_DAPM_PRE_REG);
|
|
if (ret < 0)
|
|
goto out;
|
|
}
|
|
|
|
ret = snd_soc_update_bits(widget->codec, e->reg, mask, val);
|
|
|
|
if (widget->event_flags & SND_SOC_DAPM_POST_REG)
|
|
ret = widget->event(widget,
|
|
kcontrol, SND_SOC_DAPM_POST_REG);
|
|
|
|
out:
|
|
mutex_unlock(&widget->codec->mutex);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
|
|
|
|
/**
|
|
* snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
|
|
|
|
ucontrol->value.enumerated.item[0] = widget->value;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt);
|
|
|
|
/**
|
|
* snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
|
|
* @kcontrol: mixer control
|
|
* @ucontrol: control element information
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
|
|
struct soc_enum *e =
|
|
(struct soc_enum *)kcontrol->private_value;
|
|
int change;
|
|
int ret = 0;
|
|
|
|
if (ucontrol->value.enumerated.item[0] >= e->max)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&widget->codec->mutex);
|
|
|
|
change = widget->value != ucontrol->value.enumerated.item[0];
|
|
widget->value = ucontrol->value.enumerated.item[0];
|
|
dapm_mux_update_power(widget, kcontrol, change, widget->value, e);
|
|
|
|
mutex_unlock(&widget->codec->mutex);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt);
|
|
|
|
/**
|
|
* snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
|
|
* callback
|
|
* @kcontrol: mixer control
|
|
* @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 *widget = snd_kcontrol_chip(kcontrol);
|
|
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 *widget = snd_kcontrol_chip(kcontrol);
|
|
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
|
|
unsigned int val, mux, change;
|
|
unsigned int mask;
|
|
int ret = 0;
|
|
|
|
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(&widget->codec->mutex);
|
|
widget->value = val;
|
|
change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
|
|
dapm_mux_update_power(widget, kcontrol, change, mux, e);
|
|
|
|
if (widget->event_flags & SND_SOC_DAPM_PRE_REG) {
|
|
ret = widget->event(widget,
|
|
kcontrol, SND_SOC_DAPM_PRE_REG);
|
|
if (ret < 0)
|
|
goto out;
|
|
}
|
|
|
|
ret = snd_soc_update_bits(widget->codec, e->reg, mask, val);
|
|
|
|
if (widget->event_flags & SND_SOC_DAPM_POST_REG)
|
|
ret = widget->event(widget,
|
|
kcontrol, SND_SOC_DAPM_POST_REG);
|
|
|
|
out:
|
|
mutex_unlock(&widget->codec->mutex);
|
|
return ret;
|
|
}
|
|
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, 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, pin);
|
|
else
|
|
snd_soc_dapm_disable_pin(codec, pin);
|
|
|
|
snd_soc_dapm_sync(codec);
|
|
|
|
mutex_unlock(&codec->mutex);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
|
|
|
|
/**
|
|
* snd_soc_dapm_new_control - create new dapm control
|
|
* @codec: audio codec
|
|
* @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_codec *codec,
|
|
const struct snd_soc_dapm_widget *widget)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
if ((w = dapm_cnew_widget(widget)) == NULL)
|
|
return -ENOMEM;
|
|
|
|
w->codec = codec;
|
|
INIT_LIST_HEAD(&w->sources);
|
|
INIT_LIST_HEAD(&w->sinks);
|
|
INIT_LIST_HEAD(&w->list);
|
|
list_add(&w->list, &codec->dapm_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
|
|
* @codec: audio codec
|
|
* @widget: widget array
|
|
* @num: number of widgets
|
|
*
|
|
* Creates new DAPM controls based upon the templates.
|
|
*
|
|
* Returns 0 for success else error.
|
|
*/
|
|
int snd_soc_dapm_new_controls(struct snd_soc_codec *codec,
|
|
const struct snd_soc_dapm_widget *widget,
|
|
int num)
|
|
{
|
|
int i, ret;
|
|
|
|
for (i = 0; i < num; i++) {
|
|
ret = snd_soc_dapm_new_control(codec, widget);
|
|
if (ret < 0) {
|
|
printk(KERN_ERR
|
|
"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);
|
|
|
|
|
|
/**
|
|
* snd_soc_dapm_stream_event - send a stream event to the dapm core
|
|
* @codec: audio codec
|
|
* @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_codec *codec,
|
|
char *stream, int event)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
if (stream == NULL)
|
|
return 0;
|
|
|
|
mutex_lock(&codec->mutex);
|
|
list_for_each_entry(w, &codec->dapm_widgets, list)
|
|
{
|
|
if (!w->sname)
|
|
continue;
|
|
pr_debug("widget %s\n %s stream %s event %d\n",
|
|
w->name, w->sname, stream, event);
|
|
if (strstr(w->sname, stream)) {
|
|
switch(event) {
|
|
case SND_SOC_DAPM_STREAM_START:
|
|
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(codec, event);
|
|
mutex_unlock(&codec->mutex);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event);
|
|
|
|
/**
|
|
* snd_soc_dapm_enable_pin - enable pin.
|
|
* @codec: SoC codec
|
|
* @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_codec *codec, const char *pin)
|
|
{
|
|
return snd_soc_dapm_set_pin(codec, pin, 1);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
|
|
|
|
/**
|
|
* snd_soc_dapm_force_enable_pin - force a pin to be enabled
|
|
* @codec: SoC codec
|
|
* @pin: pin name
|
|
*
|
|
* Enables input/output pin regardless of any other state. This is
|
|
* intended for use with microphone bias supplies used in microphone
|
|
* jack detection.
|
|
*
|
|
* NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
|
|
* do any widget power switching.
|
|
*/
|
|
int snd_soc_dapm_force_enable_pin(struct snd_soc_codec *codec, const char *pin)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
list_for_each_entry(w, &codec->dapm_widgets, list) {
|
|
if (!strcmp(w->name, pin)) {
|
|
pr_debug("dapm: %s: pin %s\n", codec->name, pin);
|
|
w->connected = 1;
|
|
w->force = 1;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin);
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
|
|
|
|
/**
|
|
* snd_soc_dapm_disable_pin - disable pin.
|
|
* @codec: SoC codec
|
|
* @pin: pin name
|
|
*
|
|
* 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_codec *codec, const char *pin)
|
|
{
|
|
return snd_soc_dapm_set_pin(codec, pin, 0);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
|
|
|
|
/**
|
|
* snd_soc_dapm_nc_pin - permanently disable pin.
|
|
* @codec: SoC codec
|
|
* @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_codec *codec, const char *pin)
|
|
{
|
|
return snd_soc_dapm_set_pin(codec, pin, 0);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
|
|
|
|
/**
|
|
* snd_soc_dapm_get_pin_status - get audio pin status
|
|
* @codec: audio codec
|
|
* @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_codec *codec, const char *pin)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
list_for_each_entry(w, &codec->dapm_widgets, list) {
|
|
if (!strcmp(w->name, pin))
|
|
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
|
|
* @codec: audio codec
|
|
* @pin: audio signal pin endpoint (or start point)
|
|
*
|
|
* Mark the given endpoint or pin as ignoring suspend. When the
|
|
* system is disabled a path between two endpoints flagged as ignoring
|
|
* suspend will not be disabled. The path must already be enabled via
|
|
* normal means at suspend time, it will not be turned on if it was not
|
|
* already enabled.
|
|
*/
|
|
int snd_soc_dapm_ignore_suspend(struct snd_soc_codec *codec, const char *pin)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
list_for_each_entry(w, &codec->dapm_widgets, list) {
|
|
if (!strcmp(w->name, pin)) {
|
|
w->ignore_suspend = 1;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
pr_err("Unknown DAPM pin: %s\n", pin);
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
|
|
|
|
/**
|
|
* snd_soc_dapm_free - free dapm resources
|
|
* @socdev: SoC device
|
|
*
|
|
* Free all dapm widgets and resources.
|
|
*/
|
|
void snd_soc_dapm_free(struct snd_soc_device *socdev)
|
|
{
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
|
|
snd_soc_dapm_sys_remove(socdev->dev);
|
|
dapm_free_widgets(codec);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
|
|
|
|
/*
|
|
* snd_soc_dapm_shutdown - callback for system shutdown
|
|
*/
|
|
void snd_soc_dapm_shutdown(struct snd_soc_device *socdev)
|
|
{
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
struct snd_soc_dapm_widget *w;
|
|
LIST_HEAD(down_list);
|
|
int powerdown = 0;
|
|
|
|
list_for_each_entry(w, &codec->dapm_widgets, list) {
|
|
if (w->power) {
|
|
dapm_seq_insert(w, &down_list, dapm_down_seq);
|
|
w->power = 0;
|
|
powerdown = 1;
|
|
}
|
|
}
|
|
|
|
/* If there were no widgets to power down we're already in
|
|
* standby.
|
|
*/
|
|
if (powerdown) {
|
|
snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_PREPARE);
|
|
dapm_seq_run(codec, &down_list, 0, dapm_down_seq);
|
|
snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_STANDBY);
|
|
}
|
|
|
|
snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_OFF);
|
|
}
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
|
|
MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
|
|
MODULE_LICENSE("GPL");
|