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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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7c2dfee848
debugfs_create_dir() returns NULL if an error occurs, returns -ENODEV when debugfs is not enabled in the kernel. Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
1546 lines
38 KiB
C
1546 lines
38 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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* DAC's/ADC's.
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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 <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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/* debug */
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#ifdef DEBUG
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#define dump_dapm(codec, action) dbg_dump_dapm(codec, action)
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#else
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#define dump_dapm(codec, action)
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#endif
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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, snd_soc_dapm_micbias, snd_soc_dapm_mic,
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snd_soc_dapm_mux, snd_soc_dapm_dac, snd_soc_dapm_mixer, snd_soc_dapm_pga,
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snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, snd_soc_dapm_post
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};
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static int dapm_down_seq[] = {
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snd_soc_dapm_pre, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk,
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snd_soc_dapm_pga, snd_soc_dapm_mixer, snd_soc_dapm_dac, snd_soc_dapm_mic,
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snd_soc_dapm_micbias, snd_soc_dapm_mux, snd_soc_dapm_post
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};
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static int dapm_status = 1;
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module_param(dapm_status, int, 0);
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MODULE_PARM_DESC(dapm_status, "enable DPM sysfs entries");
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static struct dentry *asoc_debugfs;
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static u32 pop_time;
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static void pop_wait(void)
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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(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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pop_wait();
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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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/* 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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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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/* 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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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 it's 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 it's 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 short 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("pop test %s : %s in %d ms\n", widget->name,
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widget->power ? "on" : "off", pop_time);
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snd_soc_write(codec, widget->reg, new);
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pop_wait();
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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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/* ramps the volume up or down to minimise pops before or after a
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* DAPM power event */
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static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power)
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{
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const struct snd_kcontrol_new *k = widget->kcontrols;
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if (widget->muted && !power)
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return 0;
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if (!widget->muted && power)
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return 0;
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if (widget->num_kcontrols && k) {
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struct soc_mixer_control *mc =
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(struct soc_mixer_control *)k->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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if (power) {
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int i;
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/* power up has happended, increase volume to last level */
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if (invert) {
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for (i = max; i > widget->saved_value; i--)
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snd_soc_update_bits(widget->codec, reg, mask, i);
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} else {
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for (i = 0; i < widget->saved_value; i++)
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snd_soc_update_bits(widget->codec, reg, mask, i);
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}
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widget->muted = 0;
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} else {
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/* power down is about to occur, decrease volume to mute */
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int val = snd_soc_read(widget->codec, reg);
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int i = widget->saved_value = (val >> shift) & mask;
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if (invert) {
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for (; i < mask; i++)
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snd_soc_update_bits(widget->codec, reg, mask, i);
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} else {
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for (; i > 0; i--)
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snd_soc_update_bits(widget->codec, reg, mask, i);
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}
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widget->muted = 1;
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}
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}
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return 0;
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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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char name[32];
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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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snprintf(name, 32, "%s %s", w->name, w->kcontrols[i].name);
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path->long_name = kstrdup (name, GFP_KERNEL);
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if (path->long_name == NULL)
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return -ENOMEM;
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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\n",
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path->long_name);
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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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struct snd_kcontrol *kcontrol;
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int ret = 0;
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if (!w->num_kcontrols)
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return -EINVAL;
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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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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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return ret;
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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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/*
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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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if (widget->id == snd_soc_dapm_adc && widget->active)
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return 1;
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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 1;
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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)
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return 1;
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}
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list_for_each_entry(path, &widget->sinks, list_source) {
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if (path->walked)
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continue;
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if (path->sink && path->connect) {
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path->walked = 1;
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con += is_connected_output_ep(path->sink);
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}
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}
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return con;
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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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* input widget. Returns number of complete paths.
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*/
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static int is_connected_input_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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/* active stream ? */
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if (widget->id == snd_soc_dapm_dac && widget->active)
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return 1;
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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_input && !widget->ext)
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return 1;
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|
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/* connected VMID/Bias for lower pops */
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if (widget->id == snd_soc_dapm_vmid)
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return 1;
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|
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/* connected jack ? */
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if (widget->id == snd_soc_dapm_mic || widget->id == snd_soc_dapm_line)
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return 1;
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}
|
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|
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list_for_each_entry(path, &widget->sources, list_sink) {
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if (path->walked)
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continue;
|
|
|
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if (path->source && path->connect) {
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path->walked = 1;
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con += is_connected_input_ep(path->source);
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}
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}
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return con;
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}
|
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|
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/*
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* Handler for generic register modifier widget.
|
|
*/
|
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int dapm_reg_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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unsigned int val;
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if (SND_SOC_DAPM_EVENT_ON(event))
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val = w->on_val;
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else
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val = w->off_val;
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snd_soc_update_bits(w->codec, -(w->reg + 1),
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w->mask << w->shift, val << w->shift);
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return 0;
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}
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EXPORT_SYMBOL_GPL(dapm_reg_event);
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|
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/*
|
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* Scan each dapm widget for complete audio path.
|
|
* A complete path is a route that has valid endpoints i.e.:-
|
|
*
|
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* o DAC to output pin.
|
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* o Input Pin to ADC.
|
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* o Input pin to Output pin (bypass, sidetone)
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|
* o DAC to ADC (loopback).
|
|
*/
|
|
static int dapm_power_widgets(struct snd_soc_codec *codec, int event)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
int in, out, i, c = 1, *seq = NULL, ret = 0, power_change, power;
|
|
|
|
/* do we have a sequenced stream event */
|
|
if (event == SND_SOC_DAPM_STREAM_START) {
|
|
c = ARRAY_SIZE(dapm_up_seq);
|
|
seq = dapm_up_seq;
|
|
} else if (event == SND_SOC_DAPM_STREAM_STOP) {
|
|
c = ARRAY_SIZE(dapm_down_seq);
|
|
seq = dapm_down_seq;
|
|
}
|
|
|
|
for(i = 0; i < c; i++) {
|
|
list_for_each_entry(w, &codec->dapm_widgets, list) {
|
|
|
|
/* is widget in stream order */
|
|
if (seq && seq[i] && w->id != seq[i])
|
|
continue;
|
|
|
|
/* vmid - no action */
|
|
if (w->id == snd_soc_dapm_vmid)
|
|
continue;
|
|
|
|
/* active ADC */
|
|
if (w->id == snd_soc_dapm_adc && w->active) {
|
|
in = is_connected_input_ep(w);
|
|
dapm_clear_walk(w->codec);
|
|
w->power = (in != 0) ? 1 : 0;
|
|
dapm_update_bits(w);
|
|
continue;
|
|
}
|
|
|
|
/* active DAC */
|
|
if (w->id == snd_soc_dapm_dac && w->active) {
|
|
out = is_connected_output_ep(w);
|
|
dapm_clear_walk(w->codec);
|
|
w->power = (out != 0) ? 1 : 0;
|
|
dapm_update_bits(w);
|
|
continue;
|
|
}
|
|
|
|
/* pre and post event widgets */
|
|
if (w->id == snd_soc_dapm_pre) {
|
|
if (!w->event)
|
|
continue;
|
|
|
|
if (event == SND_SOC_DAPM_STREAM_START) {
|
|
ret = w->event(w,
|
|
NULL, SND_SOC_DAPM_PRE_PMU);
|
|
if (ret < 0)
|
|
return ret;
|
|
} else if (event == SND_SOC_DAPM_STREAM_STOP) {
|
|
ret = w->event(w,
|
|
NULL, SND_SOC_DAPM_PRE_PMD);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
continue;
|
|
}
|
|
if (w->id == snd_soc_dapm_post) {
|
|
if (!w->event)
|
|
continue;
|
|
|
|
if (event == SND_SOC_DAPM_STREAM_START) {
|
|
ret = w->event(w,
|
|
NULL, SND_SOC_DAPM_POST_PMU);
|
|
if (ret < 0)
|
|
return ret;
|
|
} else if (event == SND_SOC_DAPM_STREAM_STOP) {
|
|
ret = w->event(w,
|
|
NULL, SND_SOC_DAPM_POST_PMD);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
/* all other widgets */
|
|
in = is_connected_input_ep(w);
|
|
dapm_clear_walk(w->codec);
|
|
out = is_connected_output_ep(w);
|
|
dapm_clear_walk(w->codec);
|
|
power = (out != 0 && in != 0) ? 1 : 0;
|
|
power_change = (w->power == power) ? 0: 1;
|
|
w->power = power;
|
|
|
|
if (!power_change)
|
|
continue;
|
|
|
|
/* 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 (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 (!power && w->event &&
|
|
(w->event_flags & SND_SOC_DAPM_PRE_PMD)) {
|
|
ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
/* Lower PGA volume to reduce pops */
|
|
if (w->id == snd_soc_dapm_pga && !power)
|
|
dapm_set_pga(w, power);
|
|
|
|
dapm_update_bits(w);
|
|
|
|
/* Raise PGA volume to reduce pops */
|
|
if (w->id == snd_soc_dapm_pga && power)
|
|
dapm_set_pga(w, power);
|
|
|
|
/* power up post event */
|
|
if (power && w->event &&
|
|
(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 (!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 ret;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
struct snd_soc_dapm_path *p = NULL;
|
|
int in, out;
|
|
|
|
printk("DAPM %s %s\n", codec->name, action);
|
|
|
|
list_for_each_entry(w, &codec->dapm_widgets, list) {
|
|
|
|
/* only display widgets that effect routing */
|
|
switch (w->id) {
|
|
case snd_soc_dapm_pre:
|
|
case snd_soc_dapm_post:
|
|
case snd_soc_dapm_vmid:
|
|
continue;
|
|
case snd_soc_dapm_mux:
|
|
case snd_soc_dapm_output:
|
|
case snd_soc_dapm_input:
|
|
case snd_soc_dapm_switch:
|
|
case snd_soc_dapm_hp:
|
|
case snd_soc_dapm_mic:
|
|
case snd_soc_dapm_spk:
|
|
case snd_soc_dapm_line:
|
|
case snd_soc_dapm_micbias:
|
|
case snd_soc_dapm_dac:
|
|
case snd_soc_dapm_adc:
|
|
case snd_soc_dapm_pga:
|
|
case snd_soc_dapm_mixer:
|
|
if (w->name) {
|
|
in = is_connected_input_ep(w);
|
|
dapm_clear_walk(w->codec);
|
|
out = is_connected_output_ep(w);
|
|
dapm_clear_walk(w->codec);
|
|
printk("%s: %s in %d out %d\n", w->name,
|
|
w->power ? "On":"Off",in, out);
|
|
|
|
list_for_each_entry(p, &w->sources, list_sink) {
|
|
if (p->connect)
|
|
printk(" in %s %s\n", p->name ? p->name : "static",
|
|
p->source->name);
|
|
}
|
|
list_for_each_entry(p, &w->sinks, list_source) {
|
|
if (p->connect)
|
|
printk(" out %s %s\n", p->name ? p->name : "static",
|
|
p->sink->name);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* test and update the power status of a mux widget */
|
|
static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
|
|
struct snd_kcontrol *kcontrol, int mask,
|
|
int mux, int val, struct soc_enum *e)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
int found = 0;
|
|
|
|
if (widget->id != snd_soc_dapm_mux)
|
|
return -ENODEV;
|
|
|
|
if (!snd_soc_test_bits(widget->codec, e->reg, mask, val))
|
|
return 0;
|
|
|
|
/* find dapm widget path assoc with kcontrol */
|
|
list_for_each_entry(path, &widget->codec->dapm_paths, list) {
|
|
if (path->kcontrol != kcontrol)
|
|
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);
|
|
dump_dapm(widget->codec, "mux power update");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* test and update the power status of a mixer or switch widget */
|
|
static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
|
|
struct snd_kcontrol *kcontrol, int reg,
|
|
int val_mask, int val, int invert)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
int found = 0;
|
|
|
|
if (widget->id != snd_soc_dapm_mixer &&
|
|
widget->id != snd_soc_dapm_switch)
|
|
return -ENODEV;
|
|
|
|
if (!snd_soc_test_bits(widget->codec, reg, val_mask, val))
|
|
return 0;
|
|
|
|
/* find dapm widget path assoc with kcontrol */
|
|
list_for_each_entry(path, &widget->codec->dapm_paths, list) {
|
|
if (path->kcontrol != kcontrol)
|
|
continue;
|
|
|
|
/* found, now check type */
|
|
found = 1;
|
|
if (val)
|
|
/* new connection */
|
|
path->connect = invert ? 0:1;
|
|
else
|
|
/* old connection must be powered down */
|
|
path->connect = invert ? 1:0;
|
|
break;
|
|
}
|
|
|
|
if (found) {
|
|
dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP);
|
|
dump_dapm(widget->codec, "mixer power update");
|
|
}
|
|
|
|
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->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:
|
|
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)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (!dapm_status)
|
|
return 0;
|
|
|
|
ret = device_create_file(dev, &dev_attr_dapm_widget);
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
asoc_debugfs = debugfs_create_dir("asoc", NULL);
|
|
if (!IS_ERR(asoc_debugfs) && asoc_debugfs)
|
|
debugfs_create_u32("dapm_pop_time", 0744, asoc_debugfs,
|
|
&pop_time);
|
|
else
|
|
asoc_debugfs = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void snd_soc_dapm_sys_remove(struct device *dev)
|
|
{
|
|
if (dapm_status) {
|
|
device_remove_file(dev, &dev_attr_dapm_widget);
|
|
}
|
|
|
|
if (asoc_debugfs)
|
|
debugfs_remove_recursive(asoc_debugfs);
|
|
}
|
|
|
|
/* 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,
|
|
char *pin, int status)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
list_for_each_entry(w, &codec->dapm_widgets, list) {
|
|
if (!strcmp(w->name, pin)) {
|
|
pr_debug("dapm: %s: pin %s\n", codec->name, pin);
|
|
w->connected = status;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_sync - 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)
|
|
{
|
|
int ret = dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP);
|
|
dump_dapm(codec, "sync");
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
|
|
|
|
static int snd_soc_dapm_add_route(struct snd_soc_codec *codec,
|
|
const char *sink, const char *control, const char *source)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
|
|
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;
|
|
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 ||
|
|
wsink->id == snd_soc_dapm_line ||
|
|
wsink->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:
|
|
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:
|
|
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:
|
|
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_connect_input - connect dapm widgets
|
|
* @codec: audio codec
|
|
* @sink: name of target widget
|
|
* @control: mixer control name
|
|
* @source: name of source name
|
|
*
|
|
* Connects 2 dapm widgets together via a named audio path. The sink is
|
|
* the widget receiving the audio signal, whilst the source is the sender
|
|
* of the audio signal.
|
|
*
|
|
* This function has been deprecated in favour of snd_soc_dapm_add_routes().
|
|
*
|
|
* Returns 0 for success else error.
|
|
*/
|
|
int snd_soc_dapm_connect_input(struct snd_soc_codec *codec, const char *sink,
|
|
const char *control, const char *source)
|
|
{
|
|
return snd_soc_dapm_add_route(codec, sink, control, source);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_connect_input);
|
|
|
|
/**
|
|
* snd_soc_dapm_add_routes - Add routes between DAPM widgets
|
|
* @codec: codec
|
|
* @route: audio routes
|
|
* @num: number of routes
|
|
*
|
|
* Connects 2 dapm widgets together via a named audio path. The sink is
|
|
* the widget receiving the audio signal, whilst the source is the sender
|
|
* of the audio signal.
|
|
*
|
|
* Returns 0 for success else error. On error all resources can be freed
|
|
* with a call to snd_soc_card_free().
|
|
*/
|
|
int snd_soc_dapm_add_routes(struct snd_soc_codec *codec,
|
|
const struct snd_soc_dapm_route *route, int num)
|
|
{
|
|
int i, ret;
|
|
|
|
for (i = 0; i < num; i++) {
|
|
ret = snd_soc_dapm_add_route(codec, route->sink,
|
|
route->control, route->source);
|
|
if (ret < 0) {
|
|
printk(KERN_ERR "Failed to add route %s->%s\n",
|
|
route->source,
|
|
route->sink);
|
|
return ret;
|
|
}
|
|
route++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
|
|
|
|
/**
|
|
* snd_soc_dapm_new_widgets - add new dapm widgets
|
|
* @codec: audio codec
|
|
*
|
|
* 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:
|
|
dapm_new_mixer(codec, w);
|
|
break;
|
|
case snd_soc_dapm_mux:
|
|
dapm_new_mux(codec, w);
|
|
break;
|
|
case snd_soc_dapm_adc:
|
|
case snd_soc_dapm_dac:
|
|
case snd_soc_dapm_pga:
|
|
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:
|
|
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
|
|
* @uinfo: 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;
|
|
|
|
/* return the saved value if we are powered down */
|
|
if (widget->id == snd_soc_dapm_pga && !widget->power) {
|
|
ucontrol->value.integer.value[0] = widget->saved_value;
|
|
return 0;
|
|
}
|
|
|
|
ucontrol->value.integer.value[0] =
|
|
(snd_soc_read(widget->codec, reg) >> shift) & mask;
|
|
if (shift != rshift)
|
|
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
|
|
* @uinfo: 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 short val, val2, val_mask;
|
|
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;
|
|
|
|
/* save volume value if the widget is powered down */
|
|
if (widget->id == snd_soc_dapm_pga && !widget->power) {
|
|
widget->saved_value = val;
|
|
mutex_unlock(&widget->codec->mutex);
|
|
return 1;
|
|
}
|
|
|
|
dapm_mixer_update_power(widget, kcontrol, reg, val_mask, val, invert);
|
|
if (widget->event) {
|
|
if (widget->event_flags & SND_SOC_DAPM_PRE_REG) {
|
|
ret = widget->event(widget, kcontrol,
|
|
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
|
|
* @uinfo: 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 short 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
|
|
* @uinfo: 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 short val, mux;
|
|
unsigned short 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;
|
|
dapm_mux_update_power(widget, kcontrol, mask, mux, val, e);
|
|
if (widget->event) {
|
|
if (widget->event_flags & SND_SOC_DAPM_PRE_REG) {
|
|
ret = widget->event(widget,
|
|
kcontrol, SND_SOC_DAPM_PRE_REG);
|
|
if (ret < 0)
|
|
goto out;
|
|
}
|
|
ret = snd_soc_update_bits(widget->codec, e->reg, mask, val);
|
|
if (widget->event_flags & SND_SOC_DAPM_POST_REG)
|
|
ret = widget->event(widget,
|
|
kcontrol, SND_SOC_DAPM_POST_REG);
|
|
} else
|
|
ret = snd_soc_update_bits(widget->codec, e->reg, mask, val);
|
|
|
|
out:
|
|
mutex_unlock(&widget->codec->mutex);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
|
|
|
|
/**
|
|
* 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)
|
|
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:
|
|
if (w->active)
|
|
w->suspend = 1;
|
|
w->active = 0;
|
|
break;
|
|
case SND_SOC_DAPM_STREAM_RESUME:
|
|
if (w->suspend) {
|
|
w->active = 1;
|
|
w->suspend = 0;
|
|
}
|
|
break;
|
|
case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
|
|
break;
|
|
case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
mutex_unlock(&codec->mutex);
|
|
|
|
dapm_power_widgets(codec, event);
|
|
dump_dapm(codec, __func__);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event);
|
|
|
|
/**
|
|
* snd_soc_dapm_set_bias_level - set the bias level for the system
|
|
* @socdev: audio device
|
|
* @level: level to configure
|
|
*
|
|
* Configure the bias (power) levels for the SoC audio device.
|
|
*
|
|
* Returns 0 for success else error.
|
|
*/
|
|
int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev,
|
|
enum snd_soc_bias_level level)
|
|
{
|
|
struct snd_soc_codec *codec = socdev->codec;
|
|
struct snd_soc_machine *machine = socdev->machine;
|
|
int ret = 0;
|
|
|
|
if (machine->set_bias_level)
|
|
ret = machine->set_bias_level(machine, level);
|
|
if (ret == 0 && codec->set_bias_level)
|
|
ret = codec->set_bias_level(codec, level);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_enable_pin - enable pin.
|
|
* @snd_soc_codec: SoC codec
|
|
* @pin: pin name
|
|
*
|
|
* Enables input/output pin and it's parents or children widgets iff there is
|
|
* a valid audio route and active audio stream.
|
|
* NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
|
|
* do any widget power switching.
|
|
*/
|
|
int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, char *pin)
|
|
{
|
|
return snd_soc_dapm_set_pin(codec, pin, 1);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
|
|
|
|
/**
|
|
* snd_soc_dapm_disable_pin - disable pin.
|
|
* @codec: SoC codec
|
|
* @pin: pin name
|
|
*
|
|
* Disables input/output pin and it's parents or children widgets.
|
|
* NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
|
|
* do any widget power switching.
|
|
*/
|
|
int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, char *pin)
|
|
{
|
|
return snd_soc_dapm_set_pin(codec, pin, 0);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
|
|
|
|
/**
|
|
* snd_soc_dapm_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, 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, 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_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->codec;
|
|
|
|
snd_soc_dapm_sys_remove(socdev->dev);
|
|
dapm_free_widgets(codec);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
|
|
MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
|
|
MODULE_LICENSE("GPL");
|