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![Kuninori Morimoto](/assets/img/avatar_default.png)
soc.h has snd_soc_dapm_mutex_lock/unlock() definition and many drivers are using it, but soc-dapm.c is not. 1st reason is snd_soc_dapm_mutex_lock/unlock() requests snd_soc_dapm_context pointer as parameter (A), but sometimes soc-dapm.c needs to use snd_soc_card (B). (A) static inline void snd_soc_dapm_mutex_lock(struct snd_soc_dapm_context *dapm) { mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); } ^^^^^^^^^^ (B) mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); ^^^^ 2nd reason is it want to use SND_SOC_DAPM_CLASS_INIT for mutex_lock_nested(), but helper is using _RUNTIME (A). The conclusion is we want to use "dapm vs card" and "_RUNTIME vs _INIT" for dapm lock/unlock. To enable this selfish request, this patch uses _Generic macro. We can use snd_soc_dapm_mutex_lock/unlock() for both dapm and card case. snd_soc_dapm_mutex_lock(dapm); snd_soc_dapm_mutex_unlock(dapm); snd_soc_dapm_mutex_lock(card); snd_soc_dapm_mutex_unlock(card); Current soc-dapm.c is using both mutex_lock() and mutex_lock_nested(). This patch handles mutex_lock() as mutex_lock_nested(..., 0), in other words, handles below as same. mutex_lock(&card->dapm_mutex); mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); Because people might misunderstand that _init() is mutex initialization, this patch renames _INIT to _ROOT and adds new snd_soc_dapm_mutex_lock_root() for it. This patch also moves snd_soc_dapm_subclass definition from soc-dapm.h to soc.h to keep related code together. Because very complex soc.h vs soc-dapm.h relationship, it is difficult/impossible to define these helper into soc-dapm.h. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87cz4hx3v0.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
4879 lines
122 KiB
C
4879 lines
122 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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//
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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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// 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/headphone 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 power down of audio subsystem to reduce pops between a quick
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// device reopen.
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/async.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/bitops.h>
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#include <linux/platform_device.h>
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#include <linux/jiffies.h>
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#include <linux/debugfs.h>
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#include <linux/pm_runtime.h>
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#include <linux/regulator/consumer.h>
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#include <linux/pinctrl/consumer.h>
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#include <linux/clk.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/initval.h>
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#include <trace/events/asoc.h>
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#define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
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#define SND_SOC_DAPM_DIR_REVERSE(x) ((x == SND_SOC_DAPM_DIR_IN) ? \
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SND_SOC_DAPM_DIR_OUT : SND_SOC_DAPM_DIR_IN)
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#define snd_soc_dapm_for_each_direction(dir) \
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for ((dir) = SND_SOC_DAPM_DIR_IN; (dir) <= SND_SOC_DAPM_DIR_OUT; \
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(dir)++)
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static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
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struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
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const char *control,
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int (*connected)(struct snd_soc_dapm_widget *source,
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struct snd_soc_dapm_widget *sink));
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struct snd_soc_dapm_widget *
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snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
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const struct snd_soc_dapm_widget *widget);
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struct snd_soc_dapm_widget *
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snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
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const struct snd_soc_dapm_widget *widget);
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static unsigned int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg);
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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] = 1,
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[snd_soc_dapm_regulator_supply] = 2,
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[snd_soc_dapm_pinctrl] = 2,
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[snd_soc_dapm_clock_supply] = 2,
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[snd_soc_dapm_supply] = 3,
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[snd_soc_dapm_dai_link] = 3,
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[snd_soc_dapm_micbias] = 4,
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[snd_soc_dapm_vmid] = 4,
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[snd_soc_dapm_dai_in] = 5,
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[snd_soc_dapm_dai_out] = 5,
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[snd_soc_dapm_aif_in] = 5,
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[snd_soc_dapm_aif_out] = 5,
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[snd_soc_dapm_mic] = 6,
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[snd_soc_dapm_siggen] = 6,
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[snd_soc_dapm_input] = 6,
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[snd_soc_dapm_output] = 6,
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[snd_soc_dapm_mux] = 7,
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[snd_soc_dapm_demux] = 7,
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[snd_soc_dapm_dac] = 8,
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[snd_soc_dapm_switch] = 9,
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[snd_soc_dapm_mixer] = 9,
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[snd_soc_dapm_mixer_named_ctl] = 9,
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[snd_soc_dapm_pga] = 10,
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[snd_soc_dapm_buffer] = 10,
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[snd_soc_dapm_scheduler] = 10,
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[snd_soc_dapm_effect] = 10,
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[snd_soc_dapm_src] = 10,
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[snd_soc_dapm_asrc] = 10,
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[snd_soc_dapm_encoder] = 10,
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[snd_soc_dapm_decoder] = 10,
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[snd_soc_dapm_adc] = 11,
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[snd_soc_dapm_out_drv] = 12,
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[snd_soc_dapm_hp] = 12,
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[snd_soc_dapm_line] = 12,
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[snd_soc_dapm_sink] = 12,
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[snd_soc_dapm_spk] = 13,
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[snd_soc_dapm_kcontrol] = 14,
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[snd_soc_dapm_post] = 15,
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};
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static int dapm_down_seq[] = {
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[snd_soc_dapm_pre] = 1,
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[snd_soc_dapm_kcontrol] = 2,
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[snd_soc_dapm_adc] = 3,
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[snd_soc_dapm_spk] = 4,
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[snd_soc_dapm_hp] = 5,
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[snd_soc_dapm_line] = 5,
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[snd_soc_dapm_out_drv] = 5,
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[snd_soc_dapm_sink] = 6,
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[snd_soc_dapm_pga] = 6,
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[snd_soc_dapm_buffer] = 6,
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[snd_soc_dapm_scheduler] = 6,
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[snd_soc_dapm_effect] = 6,
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[snd_soc_dapm_src] = 6,
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[snd_soc_dapm_asrc] = 6,
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[snd_soc_dapm_encoder] = 6,
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[snd_soc_dapm_decoder] = 6,
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[snd_soc_dapm_switch] = 7,
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[snd_soc_dapm_mixer_named_ctl] = 7,
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[snd_soc_dapm_mixer] = 7,
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[snd_soc_dapm_dac] = 8,
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[snd_soc_dapm_mic] = 9,
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[snd_soc_dapm_siggen] = 9,
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[snd_soc_dapm_input] = 9,
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[snd_soc_dapm_output] = 9,
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[snd_soc_dapm_micbias] = 10,
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[snd_soc_dapm_vmid] = 10,
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[snd_soc_dapm_mux] = 11,
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[snd_soc_dapm_demux] = 11,
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[snd_soc_dapm_aif_in] = 12,
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[snd_soc_dapm_aif_out] = 12,
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[snd_soc_dapm_dai_in] = 12,
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[snd_soc_dapm_dai_out] = 12,
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[snd_soc_dapm_dai_link] = 13,
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[snd_soc_dapm_supply] = 14,
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[snd_soc_dapm_clock_supply] = 15,
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[snd_soc_dapm_pinctrl] = 15,
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[snd_soc_dapm_regulator_supply] = 15,
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[snd_soc_dapm_post] = 16,
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};
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static void dapm_assert_locked(struct snd_soc_dapm_context *dapm)
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{
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if (snd_soc_card_is_instantiated(dapm->card))
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snd_soc_dapm_mutex_assert_held(dapm);
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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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__printf(3, 4)
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static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
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{
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va_list args;
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char *buf;
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if (!pop_time)
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return;
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buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
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if (buf == NULL)
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return;
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va_start(args, fmt);
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vsnprintf(buf, PAGE_SIZE, fmt, args);
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dev_info(dev, "%s", buf);
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va_end(args);
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kfree(buf);
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}
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static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
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{
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return !list_empty(&w->dirty);
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}
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static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
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{
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dapm_assert_locked(w->dapm);
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if (!dapm_dirty_widget(w)) {
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dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
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w->name, reason);
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list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
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}
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}
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/*
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* Common implementation for dapm_widget_invalidate_input_paths() and
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* dapm_widget_invalidate_output_paths(). The function is inlined since the
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* combined size of the two specialized functions is only marginally larger then
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* the size of the generic function and at the same time the fast path of the
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* specialized functions is significantly smaller than the generic function.
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*/
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static __always_inline void dapm_widget_invalidate_paths(
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struct snd_soc_dapm_widget *w, enum snd_soc_dapm_direction dir)
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{
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enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
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struct snd_soc_dapm_widget *node;
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struct snd_soc_dapm_path *p;
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LIST_HEAD(list);
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dapm_assert_locked(w->dapm);
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if (w->endpoints[dir] == -1)
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return;
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list_add_tail(&w->work_list, &list);
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w->endpoints[dir] = -1;
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list_for_each_entry(w, &list, work_list) {
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snd_soc_dapm_widget_for_each_path(w, dir, p) {
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if (p->is_supply || p->weak || !p->connect)
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continue;
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node = p->node[rdir];
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if (node->endpoints[dir] != -1) {
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node->endpoints[dir] = -1;
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list_add_tail(&node->work_list, &list);
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}
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}
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}
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}
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/*
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* dapm_widget_invalidate_input_paths() - Invalidate the cached number of
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* input paths
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* @w: The widget for which to invalidate the cached number of input paths
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*
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* Resets the cached number of inputs for the specified widget and all widgets
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* that can be reached via outcoming paths from the widget.
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*
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* This function must be called if the number of output paths for a widget might
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* have changed. E.g. if the source state of a widget changes or a path is added
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* or activated with the widget as the sink.
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*/
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static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w)
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{
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dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_IN);
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}
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/*
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* dapm_widget_invalidate_output_paths() - Invalidate the cached number of
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* output paths
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* @w: The widget for which to invalidate the cached number of output paths
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*
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* Resets the cached number of outputs for the specified widget and all widgets
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* that can be reached via incoming paths from the widget.
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*
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* This function must be called if the number of output paths for a widget might
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* have changed. E.g. if the sink state of a widget changes or a path is added
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* or activated with the widget as the source.
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*/
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static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget *w)
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{
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dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_OUT);
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}
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/*
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* dapm_path_invalidate() - Invalidates the cached number of inputs and outputs
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* for the widgets connected to a path
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* @p: The path to invalidate
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*
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* Resets the cached number of inputs for the sink of the path and the cached
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* number of outputs for the source of the path.
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*
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* This function must be called when a path is added, removed or the connected
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* state changes.
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*/
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static void dapm_path_invalidate(struct snd_soc_dapm_path *p)
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{
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/*
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* Weak paths or supply paths do not influence the number of input or
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* output paths of their neighbors.
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*/
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if (p->weak || p->is_supply)
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return;
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/*
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* The number of connected endpoints is the sum of the number of
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* connected endpoints of all neighbors. If a node with 0 connected
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* endpoints is either connected or disconnected that sum won't change,
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* so there is no need to re-check the path.
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*/
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if (p->source->endpoints[SND_SOC_DAPM_DIR_IN] != 0)
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dapm_widget_invalidate_input_paths(p->sink);
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if (p->sink->endpoints[SND_SOC_DAPM_DIR_OUT] != 0)
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dapm_widget_invalidate_output_paths(p->source);
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}
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void dapm_mark_endpoints_dirty(struct snd_soc_card *card)
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{
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struct snd_soc_dapm_widget *w;
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snd_soc_dapm_mutex_lock_root(card);
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for_each_card_widgets(card, w) {
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if (w->is_ep) {
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dapm_mark_dirty(w, "Rechecking endpoints");
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if (w->is_ep & SND_SOC_DAPM_EP_SINK)
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dapm_widget_invalidate_output_paths(w);
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if (w->is_ep & SND_SOC_DAPM_EP_SOURCE)
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dapm_widget_invalidate_input_paths(w);
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}
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}
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snd_soc_dapm_mutex_unlock(card);
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}
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EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty);
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/* create a new dapm widget */
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static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
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const struct snd_soc_dapm_widget *_widget)
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{
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struct snd_soc_dapm_widget *w;
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w = kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
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if (!w)
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return NULL;
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/*
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* w->name is duplicated in caller, but w->sname isn't.
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* Duplicate it here if defined
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*/
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if (_widget->sname) {
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w->sname = kstrdup_const(_widget->sname, GFP_KERNEL);
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if (!w->sname) {
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kfree(w);
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return NULL;
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}
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}
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return w;
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}
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struct dapm_kcontrol_data {
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unsigned int value;
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struct snd_soc_dapm_widget *widget;
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struct list_head paths;
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struct snd_soc_dapm_widget_list *wlist;
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};
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static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
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struct snd_kcontrol *kcontrol, const char *ctrl_name)
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{
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struct dapm_kcontrol_data *data;
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struct soc_mixer_control *mc;
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struct soc_enum *e;
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const char *name;
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int ret;
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data = kzalloc(sizeof(*data), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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INIT_LIST_HEAD(&data->paths);
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switch (widget->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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mc = (struct soc_mixer_control *)kcontrol->private_value;
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if (mc->autodisable) {
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struct snd_soc_dapm_widget template;
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if (snd_soc_volsw_is_stereo(mc))
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dev_warn(widget->dapm->dev,
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"ASoC: Unsupported stereo autodisable control '%s'\n",
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ctrl_name);
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name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
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"Autodisable");
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if (!name) {
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ret = -ENOMEM;
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goto err_data;
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}
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memset(&template, 0, sizeof(template));
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template.reg = mc->reg;
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template.mask = (1 << fls(mc->max)) - 1;
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template.shift = mc->shift;
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if (mc->invert)
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template.off_val = mc->max;
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else
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template.off_val = 0;
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template.on_val = template.off_val;
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template.id = snd_soc_dapm_kcontrol;
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template.name = name;
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data->value = template.on_val;
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data->widget =
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snd_soc_dapm_new_control_unlocked(widget->dapm,
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&template);
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kfree(name);
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if (IS_ERR(data->widget)) {
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ret = PTR_ERR(data->widget);
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goto err_data;
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}
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}
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break;
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case snd_soc_dapm_demux:
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case snd_soc_dapm_mux:
|
|
e = (struct soc_enum *)kcontrol->private_value;
|
|
|
|
if (e->autodisable) {
|
|
struct snd_soc_dapm_widget template;
|
|
|
|
name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
|
|
"Autodisable");
|
|
if (!name) {
|
|
ret = -ENOMEM;
|
|
goto err_data;
|
|
}
|
|
|
|
memset(&template, 0, sizeof(template));
|
|
template.reg = e->reg;
|
|
template.mask = e->mask;
|
|
template.shift = e->shift_l;
|
|
template.off_val = snd_soc_enum_item_to_val(e, 0);
|
|
template.on_val = template.off_val;
|
|
template.id = snd_soc_dapm_kcontrol;
|
|
template.name = name;
|
|
|
|
data->value = template.on_val;
|
|
|
|
data->widget = snd_soc_dapm_new_control_unlocked(
|
|
widget->dapm, &template);
|
|
kfree(name);
|
|
if (IS_ERR(data->widget)) {
|
|
ret = PTR_ERR(data->widget);
|
|
goto err_data;
|
|
}
|
|
|
|
snd_soc_dapm_add_path(widget->dapm, data->widget,
|
|
widget, NULL, NULL);
|
|
} else if (e->reg != SND_SOC_NOPM) {
|
|
data->value = soc_dapm_read(widget->dapm, e->reg) &
|
|
(e->mask << e->shift_l);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
kcontrol->private_data = data;
|
|
|
|
return 0;
|
|
|
|
err_data:
|
|
kfree(data);
|
|
return ret;
|
|
}
|
|
|
|
static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
|
|
{
|
|
struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
|
|
|
|
list_del(&data->paths);
|
|
kfree(data->wlist);
|
|
kfree(data);
|
|
}
|
|
|
|
static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
|
|
const struct snd_kcontrol *kcontrol)
|
|
{
|
|
struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
|
|
|
|
return data->wlist;
|
|
}
|
|
|
|
static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
|
|
struct snd_soc_dapm_widget *widget)
|
|
{
|
|
struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
|
|
struct snd_soc_dapm_widget_list *new_wlist;
|
|
unsigned int n;
|
|
|
|
if (data->wlist)
|
|
n = data->wlist->num_widgets + 1;
|
|
else
|
|
n = 1;
|
|
|
|
new_wlist = krealloc(data->wlist,
|
|
struct_size(new_wlist, widgets, n),
|
|
GFP_KERNEL);
|
|
if (!new_wlist)
|
|
return -ENOMEM;
|
|
|
|
new_wlist->widgets[n - 1] = widget;
|
|
new_wlist->num_widgets = n;
|
|
|
|
data->wlist = new_wlist;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
|
|
struct snd_soc_dapm_path *path)
|
|
{
|
|
struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
|
|
|
|
list_add_tail(&path->list_kcontrol, &data->paths);
|
|
}
|
|
|
|
static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
|
|
{
|
|
struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
|
|
|
|
if (!data->widget)
|
|
return true;
|
|
|
|
return data->widget->power;
|
|
}
|
|
|
|
static struct list_head *dapm_kcontrol_get_path_list(
|
|
const struct snd_kcontrol *kcontrol)
|
|
{
|
|
struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
|
|
|
|
return &data->paths;
|
|
}
|
|
|
|
#define dapm_kcontrol_for_each_path(path, kcontrol) \
|
|
list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
|
|
list_kcontrol)
|
|
|
|
unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
|
|
{
|
|
struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
|
|
|
|
return data->value;
|
|
}
|
|
EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value);
|
|
|
|
static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
|
|
unsigned int value)
|
|
{
|
|
struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
|
|
|
|
if (data->value == value)
|
|
return false;
|
|
|
|
if (data->widget) {
|
|
switch (dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->id) {
|
|
case snd_soc_dapm_switch:
|
|
case snd_soc_dapm_mixer:
|
|
case snd_soc_dapm_mixer_named_ctl:
|
|
data->widget->on_val = value & data->widget->mask;
|
|
break;
|
|
case snd_soc_dapm_demux:
|
|
case snd_soc_dapm_mux:
|
|
data->widget->on_val = value >> data->widget->shift;
|
|
break;
|
|
default:
|
|
data->widget->on_val = value;
|
|
break;
|
|
}
|
|
}
|
|
|
|
data->value = value;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_kcontrol_widget() - Returns the widget associated to a
|
|
* kcontrol
|
|
* @kcontrol: The kcontrol
|
|
*/
|
|
struct snd_soc_dapm_widget *snd_soc_dapm_kcontrol_widget(
|
|
struct snd_kcontrol *kcontrol)
|
|
{
|
|
return dapm_kcontrol_get_wlist(kcontrol)->widgets[0];
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_widget);
|
|
|
|
/**
|
|
* snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
|
|
* kcontrol
|
|
* @kcontrol: The kcontrol
|
|
*
|
|
* Note: This function must only be used on kcontrols that are known to have
|
|
* been registered for a CODEC. Otherwise the behaviour is undefined.
|
|
*/
|
|
struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm(
|
|
struct snd_kcontrol *kcontrol)
|
|
{
|
|
return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm);
|
|
|
|
static void dapm_reset(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
snd_soc_dapm_mutex_assert_held(card);
|
|
|
|
memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
|
|
|
|
for_each_card_widgets(card, w) {
|
|
w->new_power = w->power;
|
|
w->power_checked = false;
|
|
}
|
|
}
|
|
|
|
static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
if (!dapm->component)
|
|
return NULL;
|
|
return dapm->component->name_prefix;
|
|
}
|
|
|
|
static unsigned int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg)
|
|
{
|
|
if (!dapm->component)
|
|
return -EIO;
|
|
return snd_soc_component_read(dapm->component, reg);
|
|
}
|
|
|
|
static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm,
|
|
int reg, unsigned int mask, unsigned int value)
|
|
{
|
|
if (!dapm->component)
|
|
return -EIO;
|
|
return snd_soc_component_update_bits(dapm->component, reg,
|
|
mask, value);
|
|
}
|
|
|
|
static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm,
|
|
int reg, unsigned int mask, unsigned int value)
|
|
{
|
|
if (!dapm->component)
|
|
return -EIO;
|
|
return snd_soc_component_test_bits(dapm->component, reg, mask, value);
|
|
}
|
|
|
|
static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
if (dapm->component)
|
|
snd_soc_component_async_complete(dapm->component);
|
|
}
|
|
|
|
static struct snd_soc_dapm_widget *
|
|
dapm_wcache_lookup(struct snd_soc_dapm_widget *w, const char *name)
|
|
{
|
|
if (w) {
|
|
struct list_head *wlist = &w->dapm->card->widgets;
|
|
const int depth = 2;
|
|
int i = 0;
|
|
|
|
list_for_each_entry_from(w, wlist, list) {
|
|
if (!strcmp(name, w->name))
|
|
return w;
|
|
|
|
if (++i == depth)
|
|
break;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_force_bias_level() - Sets the DAPM bias level
|
|
* @dapm: The DAPM context for which to set the level
|
|
* @level: The level to set
|
|
*
|
|
* Forces the DAPM bias level to a specific state. It will call the bias level
|
|
* callback of DAPM context with the specified level. This will even happen if
|
|
* the context is already at the same level. Furthermore it will not go through
|
|
* the normal bias level sequencing, meaning any intermediate states between the
|
|
* current and the target state will not be entered.
|
|
*
|
|
* Note that the change in bias level is only temporary and the next time
|
|
* snd_soc_dapm_sync() is called the state will be set to the level as
|
|
* determined by the DAPM core. The function is mainly intended to be used to
|
|
* used during probe or resume from suspend to power up the device so
|
|
* initialization can be done, before the DAPM core takes over.
|
|
*/
|
|
int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm,
|
|
enum snd_soc_bias_level level)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (dapm->component)
|
|
ret = snd_soc_component_set_bias_level(dapm->component, level);
|
|
|
|
if (ret == 0)
|
|
dapm->bias_level = level;
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level);
|
|
|
|
/**
|
|
* snd_soc_dapm_set_bias_level - set the bias level for the system
|
|
* @dapm: DAPM context
|
|
* @level: level to configure
|
|
*
|
|
* Configure the bias (power) levels for the SoC audio device.
|
|
*
|
|
* Returns 0 for success else error.
|
|
*/
|
|
static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
|
|
enum snd_soc_bias_level level)
|
|
{
|
|
struct snd_soc_card *card = dapm->card;
|
|
int ret = 0;
|
|
|
|
trace_snd_soc_bias_level_start(card, level);
|
|
|
|
ret = snd_soc_card_set_bias_level(card, dapm, level);
|
|
if (ret != 0)
|
|
goto out;
|
|
|
|
if (!card || dapm != &card->dapm)
|
|
ret = snd_soc_dapm_force_bias_level(dapm, level);
|
|
|
|
if (ret != 0)
|
|
goto out;
|
|
|
|
ret = snd_soc_card_set_bias_level_post(card, dapm, level);
|
|
out:
|
|
trace_snd_soc_bias_level_done(card, level);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* connect mux widget to its interconnecting audio paths */
|
|
static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
|
|
struct snd_soc_dapm_path *path, const char *control_name,
|
|
struct snd_soc_dapm_widget *w)
|
|
{
|
|
const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0];
|
|
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
|
|
unsigned int item;
|
|
int i;
|
|
|
|
if (e->reg != SND_SOC_NOPM) {
|
|
unsigned int val;
|
|
val = soc_dapm_read(dapm, e->reg);
|
|
val = (val >> e->shift_l) & e->mask;
|
|
item = snd_soc_enum_val_to_item(e, val);
|
|
} else {
|
|
/* since a virtual mux has no backing registers to
|
|
* decide which path to connect, it will try to match
|
|
* with the first enumeration. This is to ensure
|
|
* that the default mux choice (the first) will be
|
|
* correctly powered up during initialization.
|
|
*/
|
|
item = 0;
|
|
}
|
|
|
|
i = match_string(e->texts, e->items, control_name);
|
|
if (i < 0)
|
|
return -ENODEV;
|
|
|
|
path->name = e->texts[i];
|
|
path->connect = (i == item);
|
|
return 0;
|
|
|
|
}
|
|
|
|
/* set up initial codec paths */
|
|
static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i,
|
|
int nth_path)
|
|
{
|
|
struct soc_mixer_control *mc = (struct soc_mixer_control *)
|
|
p->sink->kcontrol_news[i].private_value;
|
|
unsigned int reg = mc->reg;
|
|
unsigned int invert = mc->invert;
|
|
|
|
if (reg != SND_SOC_NOPM) {
|
|
unsigned int shift = mc->shift;
|
|
unsigned int max = mc->max;
|
|
unsigned int mask = (1 << fls(max)) - 1;
|
|
unsigned int val = soc_dapm_read(p->sink->dapm, reg);
|
|
|
|
/*
|
|
* The nth_path argument allows this function to know
|
|
* which path of a kcontrol it is setting the initial
|
|
* status for. Ideally this would support any number
|
|
* of paths and channels. But since kcontrols only come
|
|
* in mono and stereo variants, we are limited to 2
|
|
* channels.
|
|
*
|
|
* The following code assumes for stereo controls the
|
|
* first path is the left channel, and all remaining
|
|
* paths are the right channel.
|
|
*/
|
|
if (snd_soc_volsw_is_stereo(mc) && nth_path > 0) {
|
|
if (reg != mc->rreg)
|
|
val = soc_dapm_read(p->sink->dapm, mc->rreg);
|
|
val = (val >> mc->rshift) & mask;
|
|
} else {
|
|
val = (val >> shift) & mask;
|
|
}
|
|
if (invert)
|
|
val = max - val;
|
|
p->connect = !!val;
|
|
} else {
|
|
/* since a virtual mixer has no backing registers to
|
|
* decide which path to connect, it will try to match
|
|
* with initial state. This is to ensure
|
|
* that the default mixer choice will be
|
|
* correctly powered up during initialization.
|
|
*/
|
|
p->connect = invert;
|
|
}
|
|
}
|
|
|
|
/* connect mixer widget to its interconnecting audio paths */
|
|
static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
|
|
struct snd_soc_dapm_path *path, const char *control_name)
|
|
{
|
|
int i, nth_path = 0;
|
|
|
|
/* search for mixer kcontrol */
|
|
for (i = 0; i < path->sink->num_kcontrols; i++) {
|
|
if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) {
|
|
path->name = path->sink->kcontrol_news[i].name;
|
|
dapm_set_mixer_path_status(path, i, nth_path++);
|
|
return 0;
|
|
}
|
|
}
|
|
return -ENODEV;
|
|
}
|
|
|
|
static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
|
|
struct snd_soc_dapm_widget *kcontrolw,
|
|
const struct snd_kcontrol_new *kcontrol_new,
|
|
struct snd_kcontrol **kcontrol)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
int i;
|
|
|
|
*kcontrol = NULL;
|
|
|
|
for_each_card_widgets(dapm->card, w) {
|
|
if (w == kcontrolw || w->dapm != kcontrolw->dapm)
|
|
continue;
|
|
for (i = 0; i < w->num_kcontrols; i++) {
|
|
if (&w->kcontrol_news[i] == kcontrol_new) {
|
|
if (w->kcontrols)
|
|
*kcontrol = w->kcontrols[i];
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Determine if a kcontrol is shared. If it is, look it up. If it isn't,
|
|
* create it. Either way, add the widget into the control's widget list
|
|
*/
|
|
static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget *w,
|
|
int kci)
|
|
{
|
|
struct snd_soc_dapm_context *dapm = w->dapm;
|
|
struct snd_card *card = dapm->card->snd_card;
|
|
const char *prefix;
|
|
size_t prefix_len;
|
|
int shared;
|
|
struct snd_kcontrol *kcontrol;
|
|
bool wname_in_long_name, kcname_in_long_name;
|
|
char *long_name = NULL;
|
|
const char *name;
|
|
int ret = 0;
|
|
|
|
prefix = soc_dapm_prefix(dapm);
|
|
if (prefix)
|
|
prefix_len = strlen(prefix) + 1;
|
|
else
|
|
prefix_len = 0;
|
|
|
|
shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
|
|
&kcontrol);
|
|
|
|
if (!kcontrol) {
|
|
if (shared) {
|
|
wname_in_long_name = false;
|
|
kcname_in_long_name = true;
|
|
} else {
|
|
switch (w->id) {
|
|
case snd_soc_dapm_switch:
|
|
case snd_soc_dapm_mixer:
|
|
case snd_soc_dapm_pga:
|
|
case snd_soc_dapm_effect:
|
|
case snd_soc_dapm_out_drv:
|
|
wname_in_long_name = true;
|
|
kcname_in_long_name = true;
|
|
break;
|
|
case snd_soc_dapm_mixer_named_ctl:
|
|
wname_in_long_name = false;
|
|
kcname_in_long_name = true;
|
|
break;
|
|
case snd_soc_dapm_demux:
|
|
case snd_soc_dapm_mux:
|
|
wname_in_long_name = true;
|
|
kcname_in_long_name = false;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
if (wname_in_long_name && kcname_in_long_name) {
|
|
/*
|
|
* The control will get a prefix from the control
|
|
* creation process but we're also using the same
|
|
* prefix for widgets so cut the prefix off the
|
|
* front of the widget name.
|
|
*/
|
|
long_name = kasprintf(GFP_KERNEL, "%s %s",
|
|
w->name + prefix_len,
|
|
w->kcontrol_news[kci].name);
|
|
if (long_name == NULL)
|
|
return -ENOMEM;
|
|
|
|
name = long_name;
|
|
} else if (wname_in_long_name) {
|
|
long_name = NULL;
|
|
name = w->name + prefix_len;
|
|
} else {
|
|
long_name = NULL;
|
|
name = w->kcontrol_news[kci].name;
|
|
}
|
|
|
|
kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
|
|
prefix);
|
|
if (!kcontrol) {
|
|
ret = -ENOMEM;
|
|
goto exit_free;
|
|
}
|
|
|
|
kcontrol->private_free = dapm_kcontrol_free;
|
|
|
|
ret = dapm_kcontrol_data_alloc(w, kcontrol, name);
|
|
if (ret) {
|
|
snd_ctl_free_one(kcontrol);
|
|
goto exit_free;
|
|
}
|
|
|
|
ret = snd_ctl_add(card, kcontrol);
|
|
if (ret < 0) {
|
|
dev_err(dapm->dev,
|
|
"ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
|
|
w->name, name, ret);
|
|
goto exit_free;
|
|
}
|
|
}
|
|
|
|
ret = dapm_kcontrol_add_widget(kcontrol, w);
|
|
if (ret == 0)
|
|
w->kcontrols[kci] = kcontrol;
|
|
|
|
exit_free:
|
|
kfree(long_name);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* create new dapm mixer control */
|
|
static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
|
|
{
|
|
int i, ret;
|
|
struct snd_soc_dapm_path *path;
|
|
struct dapm_kcontrol_data *data;
|
|
|
|
/* add kcontrol */
|
|
for (i = 0; i < w->num_kcontrols; i++) {
|
|
/* match name */
|
|
snd_soc_dapm_widget_for_each_source_path(w, path) {
|
|
/* mixer/mux paths name must match control name */
|
|
if (path->name != (char *)w->kcontrol_news[i].name)
|
|
continue;
|
|
|
|
if (!w->kcontrols[i]) {
|
|
ret = dapm_create_or_share_kcontrol(w, i);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
dapm_kcontrol_add_path(w->kcontrols[i], path);
|
|
|
|
data = snd_kcontrol_chip(w->kcontrols[i]);
|
|
if (data->widget)
|
|
snd_soc_dapm_add_path(data->widget->dapm,
|
|
data->widget,
|
|
path->source,
|
|
NULL, NULL);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* create new dapm mux control */
|
|
static int dapm_new_mux(struct snd_soc_dapm_widget *w)
|
|
{
|
|
struct snd_soc_dapm_context *dapm = w->dapm;
|
|
enum snd_soc_dapm_direction dir;
|
|
struct snd_soc_dapm_path *path;
|
|
const char *type;
|
|
int ret;
|
|
|
|
switch (w->id) {
|
|
case snd_soc_dapm_mux:
|
|
dir = SND_SOC_DAPM_DIR_OUT;
|
|
type = "mux";
|
|
break;
|
|
case snd_soc_dapm_demux:
|
|
dir = SND_SOC_DAPM_DIR_IN;
|
|
type = "demux";
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (w->num_kcontrols != 1) {
|
|
dev_err(dapm->dev,
|
|
"ASoC: %s %s has incorrect number of controls\n", type,
|
|
w->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (list_empty(&w->edges[dir])) {
|
|
dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = dapm_create_or_share_kcontrol(w, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
snd_soc_dapm_widget_for_each_path(w, dir, path) {
|
|
if (path->name)
|
|
dapm_kcontrol_add_path(w->kcontrols[0], path);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* create new dapm volume control */
|
|
static int dapm_new_pga(struct snd_soc_dapm_widget *w)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < w->num_kcontrols; i++) {
|
|
int ret = dapm_create_or_share_kcontrol(w, i);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* create new dapm dai link control */
|
|
static int dapm_new_dai_link(struct snd_soc_dapm_widget *w)
|
|
{
|
|
int i;
|
|
struct snd_soc_pcm_runtime *rtd = w->priv;
|
|
|
|
/* create control for links with > 1 config */
|
|
if (rtd->dai_link->num_c2c_params <= 1)
|
|
return 0;
|
|
|
|
/* add kcontrol */
|
|
for (i = 0; i < w->num_kcontrols; i++) {
|
|
struct snd_soc_dapm_context *dapm = w->dapm;
|
|
struct snd_card *card = dapm->card->snd_card;
|
|
struct snd_kcontrol *kcontrol = snd_soc_cnew(&w->kcontrol_news[i],
|
|
w, w->name, NULL);
|
|
int ret = snd_ctl_add(card, kcontrol);
|
|
|
|
if (ret < 0) {
|
|
dev_err(dapm->dev,
|
|
"ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
|
|
w->name, w->kcontrol_news[i].name, ret);
|
|
return ret;
|
|
}
|
|
kcontrol->private_data = w;
|
|
w->kcontrols[i] = kcontrol;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* We implement power down on suspend by checking the power state of
|
|
* the ALSA card - when we are suspending the ALSA state for the card
|
|
* is set to D3.
|
|
*/
|
|
static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
|
|
{
|
|
int level = snd_power_get_state(widget->dapm->card->snd_card);
|
|
|
|
switch (level) {
|
|
case SNDRV_CTL_POWER_D3hot:
|
|
case SNDRV_CTL_POWER_D3cold:
|
|
if (widget->ignore_suspend)
|
|
dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
|
|
widget->name);
|
|
return widget->ignore_suspend;
|
|
default:
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static void dapm_widget_list_free(struct snd_soc_dapm_widget_list **list)
|
|
{
|
|
kfree(*list);
|
|
}
|
|
|
|
static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list,
|
|
struct list_head *widgets)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
struct list_head *it;
|
|
unsigned int size = 0;
|
|
unsigned int i = 0;
|
|
|
|
list_for_each(it, widgets)
|
|
size++;
|
|
|
|
*list = kzalloc(struct_size(*list, widgets, size), GFP_KERNEL);
|
|
if (*list == NULL)
|
|
return -ENOMEM;
|
|
|
|
list_for_each_entry(w, widgets, work_list)
|
|
(*list)->widgets[i++] = w;
|
|
|
|
(*list)->num_widgets = i;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Recursively reset the cached number of inputs or outputs for the specified
|
|
* widget and all widgets that can be reached via incoming or outcoming paths
|
|
* from the widget.
|
|
*/
|
|
static void invalidate_paths_ep(struct snd_soc_dapm_widget *widget,
|
|
enum snd_soc_dapm_direction dir)
|
|
{
|
|
enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
|
|
struct snd_soc_dapm_path *path;
|
|
|
|
widget->endpoints[dir] = -1;
|
|
|
|
snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
|
|
if (path->weak || path->is_supply)
|
|
continue;
|
|
|
|
if (path->walking)
|
|
return;
|
|
|
|
if (path->connect) {
|
|
path->walking = 1;
|
|
invalidate_paths_ep(path->node[dir], dir);
|
|
path->walking = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Common implementation for is_connected_output_ep() and
|
|
* is_connected_input_ep(). The function is inlined since the combined size of
|
|
* the two specialized functions is only marginally larger then the size of the
|
|
* generic function and at the same time the fast path of the specialized
|
|
* functions is significantly smaller than the generic function.
|
|
*/
|
|
static __always_inline int is_connected_ep(struct snd_soc_dapm_widget *widget,
|
|
struct list_head *list, enum snd_soc_dapm_direction dir,
|
|
int (*fn)(struct snd_soc_dapm_widget *, struct list_head *,
|
|
bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
|
|
enum snd_soc_dapm_direction)),
|
|
bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
|
|
enum snd_soc_dapm_direction))
|
|
{
|
|
enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
|
|
struct snd_soc_dapm_path *path;
|
|
int con = 0;
|
|
|
|
if (widget->endpoints[dir] >= 0)
|
|
return widget->endpoints[dir];
|
|
|
|
DAPM_UPDATE_STAT(widget, path_checks);
|
|
|
|
/* do we need to add this widget to the list ? */
|
|
if (list)
|
|
list_add_tail(&widget->work_list, list);
|
|
|
|
if (custom_stop_condition && custom_stop_condition(widget, dir)) {
|
|
list = NULL;
|
|
custom_stop_condition = NULL;
|
|
}
|
|
|
|
if ((widget->is_ep & SND_SOC_DAPM_DIR_TO_EP(dir)) && widget->connected) {
|
|
widget->endpoints[dir] = snd_soc_dapm_suspend_check(widget);
|
|
return widget->endpoints[dir];
|
|
}
|
|
|
|
snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
|
|
DAPM_UPDATE_STAT(widget, neighbour_checks);
|
|
|
|
if (path->weak || path->is_supply)
|
|
continue;
|
|
|
|
if (path->walking)
|
|
return 1;
|
|
|
|
trace_snd_soc_dapm_path(widget, dir, path);
|
|
|
|
if (path->connect) {
|
|
path->walking = 1;
|
|
con += fn(path->node[dir], list, custom_stop_condition);
|
|
path->walking = 0;
|
|
}
|
|
}
|
|
|
|
widget->endpoints[dir] = con;
|
|
|
|
return con;
|
|
}
|
|
|
|
/*
|
|
* Recursively check for a completed path to an active or physically connected
|
|
* output widget. Returns number of complete paths.
|
|
*
|
|
* Optionally, can be supplied with a function acting as a stopping condition.
|
|
* This function takes the dapm widget currently being examined and the walk
|
|
* direction as an arguments, it should return true if widgets from that point
|
|
* in the graph onwards should not be added to the widget list.
|
|
*/
|
|
static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
|
|
struct list_head *list,
|
|
bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
|
|
enum snd_soc_dapm_direction))
|
|
{
|
|
return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_OUT,
|
|
is_connected_output_ep, custom_stop_condition);
|
|
}
|
|
|
|
/*
|
|
* Recursively check for a completed path to an active or physically connected
|
|
* input widget. Returns number of complete paths.
|
|
*
|
|
* Optionally, can be supplied with a function acting as a stopping condition.
|
|
* This function takes the dapm widget currently being examined and the walk
|
|
* direction as an arguments, it should return true if the walk should be
|
|
* stopped and false otherwise.
|
|
*/
|
|
static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
|
|
struct list_head *list,
|
|
bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
|
|
enum snd_soc_dapm_direction))
|
|
{
|
|
return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_IN,
|
|
is_connected_input_ep, custom_stop_condition);
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_dai_get_connected_widgets - query audio path and it's widgets.
|
|
* @dai: the soc DAI.
|
|
* @stream: stream direction.
|
|
* @list: list of active widgets for this stream.
|
|
* @custom_stop_condition: (optional) a function meant to stop the widget graph
|
|
* walk based on custom logic.
|
|
*
|
|
* Queries DAPM graph as to whether a valid audio stream path exists for
|
|
* the initial stream specified by name. This takes into account
|
|
* current mixer and mux kcontrol settings. Creates list of valid widgets.
|
|
*
|
|
* Optionally, can be supplied with a function acting as a stopping condition.
|
|
* This function takes the dapm widget currently being examined and the walk
|
|
* direction as an arguments, it should return true if the walk should be
|
|
* stopped and false otherwise.
|
|
*
|
|
* Returns the number of valid paths or negative error.
|
|
*/
|
|
int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
|
|
struct snd_soc_dapm_widget_list **list,
|
|
bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
|
|
enum snd_soc_dapm_direction))
|
|
{
|
|
struct snd_soc_card *card = dai->component->card;
|
|
struct snd_soc_dapm_widget *w = snd_soc_dai_get_widget(dai, stream);
|
|
LIST_HEAD(widgets);
|
|
int paths;
|
|
int ret;
|
|
|
|
snd_soc_dapm_mutex_lock(card);
|
|
|
|
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
|
invalidate_paths_ep(w, SND_SOC_DAPM_DIR_OUT);
|
|
paths = is_connected_output_ep(w, &widgets,
|
|
custom_stop_condition);
|
|
} else {
|
|
invalidate_paths_ep(w, SND_SOC_DAPM_DIR_IN);
|
|
paths = is_connected_input_ep(w, &widgets,
|
|
custom_stop_condition);
|
|
}
|
|
|
|
/* Drop starting point */
|
|
list_del(widgets.next);
|
|
|
|
ret = dapm_widget_list_create(list, &widgets);
|
|
if (ret)
|
|
paths = ret;
|
|
|
|
trace_snd_soc_dapm_connected(paths, stream);
|
|
snd_soc_dapm_mutex_unlock(card);
|
|
|
|
return paths;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_dai_get_connected_widgets);
|
|
|
|
void snd_soc_dapm_dai_free_widgets(struct snd_soc_dapm_widget_list **list)
|
|
{
|
|
dapm_widget_list_free(list);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_dai_free_widgets);
|
|
|
|
/*
|
|
* Handler for regulator supply widget.
|
|
*/
|
|
int dapm_regulator_event(struct snd_soc_dapm_widget *w,
|
|
struct snd_kcontrol *kcontrol, int event)
|
|
{
|
|
int ret;
|
|
|
|
soc_dapm_async_complete(w->dapm);
|
|
|
|
if (SND_SOC_DAPM_EVENT_ON(event)) {
|
|
if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
|
|
ret = regulator_allow_bypass(w->regulator, false);
|
|
if (ret != 0)
|
|
dev_warn(w->dapm->dev,
|
|
"ASoC: Failed to unbypass %s: %d\n",
|
|
w->name, ret);
|
|
}
|
|
|
|
return regulator_enable(w->regulator);
|
|
} else {
|
|
if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
|
|
ret = regulator_allow_bypass(w->regulator, true);
|
|
if (ret != 0)
|
|
dev_warn(w->dapm->dev,
|
|
"ASoC: Failed to bypass %s: %d\n",
|
|
w->name, ret);
|
|
}
|
|
|
|
return regulator_disable_deferred(w->regulator, w->shift);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(dapm_regulator_event);
|
|
|
|
/*
|
|
* Handler for pinctrl widget.
|
|
*/
|
|
int dapm_pinctrl_event(struct snd_soc_dapm_widget *w,
|
|
struct snd_kcontrol *kcontrol, int event)
|
|
{
|
|
struct snd_soc_dapm_pinctrl_priv *priv = w->priv;
|
|
struct pinctrl *p = w->pinctrl;
|
|
struct pinctrl_state *s;
|
|
|
|
if (!p || !priv)
|
|
return -EIO;
|
|
|
|
if (SND_SOC_DAPM_EVENT_ON(event))
|
|
s = pinctrl_lookup_state(p, priv->active_state);
|
|
else
|
|
s = pinctrl_lookup_state(p, priv->sleep_state);
|
|
|
|
if (IS_ERR(s))
|
|
return PTR_ERR(s);
|
|
|
|
return pinctrl_select_state(p, s);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dapm_pinctrl_event);
|
|
|
|
/*
|
|
* Handler for clock supply widget.
|
|
*/
|
|
int dapm_clock_event(struct snd_soc_dapm_widget *w,
|
|
struct snd_kcontrol *kcontrol, int event)
|
|
{
|
|
if (!w->clk)
|
|
return -EIO;
|
|
|
|
soc_dapm_async_complete(w->dapm);
|
|
|
|
if (SND_SOC_DAPM_EVENT_ON(event)) {
|
|
return clk_prepare_enable(w->clk);
|
|
} else {
|
|
clk_disable_unprepare(w->clk);
|
|
return 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(dapm_clock_event);
|
|
|
|
static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
|
|
{
|
|
if (w->power_checked)
|
|
return w->new_power;
|
|
|
|
if (w->force)
|
|
w->new_power = 1;
|
|
else
|
|
w->new_power = w->power_check(w);
|
|
|
|
w->power_checked = true;
|
|
|
|
return w->new_power;
|
|
}
|
|
|
|
/* Generic check to see if a widget should be powered. */
|
|
static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
|
|
{
|
|
int in, out;
|
|
|
|
DAPM_UPDATE_STAT(w, power_checks);
|
|
|
|
in = is_connected_input_ep(w, NULL, NULL);
|
|
out = is_connected_output_ep(w, NULL, NULL);
|
|
return out != 0 && in != 0;
|
|
}
|
|
|
|
/* Check to see if a power supply is needed */
|
|
static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
|
|
DAPM_UPDATE_STAT(w, power_checks);
|
|
|
|
/* Check if one of our outputs is connected */
|
|
snd_soc_dapm_widget_for_each_sink_path(w, path) {
|
|
DAPM_UPDATE_STAT(w, neighbour_checks);
|
|
|
|
if (path->weak)
|
|
continue;
|
|
|
|
if (path->connected &&
|
|
!path->connected(path->source, path->sink))
|
|
continue;
|
|
|
|
if (dapm_widget_power_check(path->sink))
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
|
|
{
|
|
return w->connected;
|
|
}
|
|
|
|
static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
|
|
struct snd_soc_dapm_widget *b,
|
|
bool power_up)
|
|
{
|
|
int *sort;
|
|
|
|
BUILD_BUG_ON(ARRAY_SIZE(dapm_up_seq) != SND_SOC_DAPM_TYPE_COUNT);
|
|
BUILD_BUG_ON(ARRAY_SIZE(dapm_down_seq) != SND_SOC_DAPM_TYPE_COUNT);
|
|
|
|
if (power_up)
|
|
sort = dapm_up_seq;
|
|
else
|
|
sort = dapm_down_seq;
|
|
|
|
WARN_ONCE(sort[a->id] == 0, "offset a->id %d not initialized\n", a->id);
|
|
WARN_ONCE(sort[b->id] == 0, "offset b->id %d not initialized\n", b->id);
|
|
|
|
if (sort[a->id] != sort[b->id])
|
|
return sort[a->id] - sort[b->id];
|
|
if (a->subseq != b->subseq) {
|
|
if (power_up)
|
|
return a->subseq - b->subseq;
|
|
else
|
|
return b->subseq - a->subseq;
|
|
}
|
|
if (a->reg != b->reg)
|
|
return a->reg - b->reg;
|
|
if (a->dapm != b->dapm)
|
|
return (unsigned long)a->dapm - (unsigned long)b->dapm;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Insert a widget in order into a DAPM power sequence. */
|
|
static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
|
|
struct list_head *list,
|
|
bool power_up)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
list_for_each_entry(w, list, power_list)
|
|
if (dapm_seq_compare(new_widget, w, power_up) < 0) {
|
|
list_add_tail(&new_widget->power_list, &w->power_list);
|
|
return;
|
|
}
|
|
|
|
list_add_tail(&new_widget->power_list, list);
|
|
}
|
|
|
|
static void dapm_seq_check_event(struct snd_soc_card *card,
|
|
struct snd_soc_dapm_widget *w, int event)
|
|
{
|
|
const char *ev_name;
|
|
int power;
|
|
|
|
switch (event) {
|
|
case SND_SOC_DAPM_PRE_PMU:
|
|
ev_name = "PRE_PMU";
|
|
power = 1;
|
|
break;
|
|
case SND_SOC_DAPM_POST_PMU:
|
|
ev_name = "POST_PMU";
|
|
power = 1;
|
|
break;
|
|
case SND_SOC_DAPM_PRE_PMD:
|
|
ev_name = "PRE_PMD";
|
|
power = 0;
|
|
break;
|
|
case SND_SOC_DAPM_POST_PMD:
|
|
ev_name = "POST_PMD";
|
|
power = 0;
|
|
break;
|
|
case SND_SOC_DAPM_WILL_PMU:
|
|
ev_name = "WILL_PMU";
|
|
power = 1;
|
|
break;
|
|
case SND_SOC_DAPM_WILL_PMD:
|
|
ev_name = "WILL_PMD";
|
|
power = 0;
|
|
break;
|
|
default:
|
|
WARN(1, "Unknown event %d\n", event);
|
|
return;
|
|
}
|
|
|
|
if (w->new_power != power)
|
|
return;
|
|
|
|
if (w->event && (w->event_flags & event)) {
|
|
int ret;
|
|
|
|
pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
|
|
w->name, ev_name);
|
|
soc_dapm_async_complete(w->dapm);
|
|
trace_snd_soc_dapm_widget_event_start(w, event);
|
|
ret = w->event(w, NULL, event);
|
|
trace_snd_soc_dapm_widget_event_done(w, event);
|
|
if (ret < 0)
|
|
dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
|
|
ev_name, w->name, ret);
|
|
}
|
|
}
|
|
|
|
/* Apply the coalesced changes from a DAPM sequence */
|
|
static void dapm_seq_run_coalesced(struct snd_soc_card *card,
|
|
struct list_head *pending)
|
|
{
|
|
struct snd_soc_dapm_context *dapm;
|
|
struct snd_soc_dapm_widget *w;
|
|
int reg;
|
|
unsigned int value = 0;
|
|
unsigned int mask = 0;
|
|
|
|
w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list);
|
|
reg = w->reg;
|
|
dapm = w->dapm;
|
|
|
|
list_for_each_entry(w, pending, power_list) {
|
|
WARN_ON(reg != w->reg || dapm != w->dapm);
|
|
w->power = w->new_power;
|
|
|
|
mask |= w->mask << w->shift;
|
|
if (w->power)
|
|
value |= w->on_val << w->shift;
|
|
else
|
|
value |= w->off_val << w->shift;
|
|
|
|
pop_dbg(dapm->dev, card->pop_time,
|
|
"pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
|
|
w->name, reg, value, mask);
|
|
|
|
/* Check for events */
|
|
dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
|
|
dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
|
|
}
|
|
|
|
if (reg >= 0) {
|
|
/* Any widget will do, they should all be updating the
|
|
* same register.
|
|
*/
|
|
|
|
pop_dbg(dapm->dev, card->pop_time,
|
|
"pop test : Applying 0x%x/0x%x to %x in %dms\n",
|
|
value, mask, reg, card->pop_time);
|
|
pop_wait(card->pop_time);
|
|
soc_dapm_update_bits(dapm, reg, mask, value);
|
|
}
|
|
|
|
list_for_each_entry(w, pending, power_list) {
|
|
dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
|
|
dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
|
|
}
|
|
}
|
|
|
|
/* Apply a DAPM power sequence.
|
|
*
|
|
* We walk over a pre-sorted list of widgets to apply power to. In
|
|
* order to minimise the number of writes to the device required
|
|
* multiple widgets will be updated in a single write where possible.
|
|
* Currently anything that requires more than a single write is not
|
|
* handled.
|
|
*/
|
|
static void dapm_seq_run(struct snd_soc_card *card,
|
|
struct list_head *list, int event, bool power_up)
|
|
{
|
|
struct snd_soc_dapm_widget *w, *n;
|
|
struct snd_soc_dapm_context *d;
|
|
LIST_HEAD(pending);
|
|
int cur_sort = -1;
|
|
int cur_subseq = -1;
|
|
int cur_reg = SND_SOC_NOPM;
|
|
struct snd_soc_dapm_context *cur_dapm = NULL;
|
|
int i;
|
|
int *sort;
|
|
|
|
if (power_up)
|
|
sort = dapm_up_seq;
|
|
else
|
|
sort = dapm_down_seq;
|
|
|
|
list_for_each_entry_safe(w, n, list, power_list) {
|
|
int ret = 0;
|
|
|
|
/* Do we need to apply any queued changes? */
|
|
if (sort[w->id] != cur_sort || w->reg != cur_reg ||
|
|
w->dapm != cur_dapm || w->subseq != cur_subseq) {
|
|
if (!list_empty(&pending))
|
|
dapm_seq_run_coalesced(card, &pending);
|
|
|
|
if (cur_dapm && cur_dapm->component) {
|
|
for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
|
|
if (sort[i] == cur_sort)
|
|
snd_soc_component_seq_notifier(
|
|
cur_dapm->component,
|
|
i, cur_subseq);
|
|
}
|
|
|
|
if (cur_dapm && w->dapm != cur_dapm)
|
|
soc_dapm_async_complete(cur_dapm);
|
|
|
|
INIT_LIST_HEAD(&pending);
|
|
cur_sort = -1;
|
|
cur_subseq = INT_MIN;
|
|
cur_reg = SND_SOC_NOPM;
|
|
cur_dapm = NULL;
|
|
}
|
|
|
|
switch (w->id) {
|
|
case snd_soc_dapm_pre:
|
|
if (!w->event)
|
|
continue;
|
|
|
|
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)
|
|
continue;
|
|
|
|
if (event == SND_SOC_DAPM_STREAM_START)
|
|
ret = w->event(w,
|
|
NULL, SND_SOC_DAPM_POST_PMU);
|
|
else if (event == SND_SOC_DAPM_STREAM_STOP)
|
|
ret = w->event(w,
|
|
NULL, SND_SOC_DAPM_POST_PMD);
|
|
break;
|
|
|
|
default:
|
|
/* Queue it up for application */
|
|
cur_sort = sort[w->id];
|
|
cur_subseq = w->subseq;
|
|
cur_reg = w->reg;
|
|
cur_dapm = w->dapm;
|
|
list_move(&w->power_list, &pending);
|
|
break;
|
|
}
|
|
|
|
if (ret < 0)
|
|
dev_err(w->dapm->dev,
|
|
"ASoC: Failed to apply widget power: %d\n", ret);
|
|
}
|
|
|
|
if (!list_empty(&pending))
|
|
dapm_seq_run_coalesced(card, &pending);
|
|
|
|
if (cur_dapm && cur_dapm->component) {
|
|
for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
|
|
if (sort[i] == cur_sort)
|
|
snd_soc_component_seq_notifier(
|
|
cur_dapm->component,
|
|
i, cur_subseq);
|
|
}
|
|
|
|
for_each_card_dapms(card, d)
|
|
soc_dapm_async_complete(d);
|
|
}
|
|
|
|
static void dapm_widget_update(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_dapm_update *update = card->update;
|
|
struct snd_soc_dapm_widget_list *wlist;
|
|
struct snd_soc_dapm_widget *w = NULL;
|
|
unsigned int wi;
|
|
int ret;
|
|
|
|
if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
|
|
return;
|
|
|
|
wlist = dapm_kcontrol_get_wlist(update->kcontrol);
|
|
|
|
for_each_dapm_widgets(wlist, wi, w) {
|
|
if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
|
|
ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
|
|
if (ret != 0)
|
|
dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
|
|
w->name, ret);
|
|
}
|
|
}
|
|
|
|
if (!w)
|
|
return;
|
|
|
|
ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask,
|
|
update->val);
|
|
if (ret < 0)
|
|
dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
|
|
w->name, ret);
|
|
|
|
if (update->has_second_set) {
|
|
ret = soc_dapm_update_bits(w->dapm, update->reg2,
|
|
update->mask2, update->val2);
|
|
if (ret < 0)
|
|
dev_err(w->dapm->dev,
|
|
"ASoC: %s DAPM update failed: %d\n",
|
|
w->name, ret);
|
|
}
|
|
|
|
for_each_dapm_widgets(wlist, wi, w) {
|
|
if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
|
|
ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
|
|
if (ret != 0)
|
|
dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
|
|
w->name, ret);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Async callback run prior to DAPM sequences - brings to _PREPARE if
|
|
* they're changing state.
|
|
*/
|
|
static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
|
|
{
|
|
struct snd_soc_dapm_context *d = data;
|
|
int ret;
|
|
|
|
/* If we're off and we're not supposed to go into STANDBY */
|
|
if (d->bias_level == SND_SOC_BIAS_OFF &&
|
|
d->target_bias_level != SND_SOC_BIAS_OFF) {
|
|
if (d->dev && cookie)
|
|
pm_runtime_get_sync(d->dev);
|
|
|
|
ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
|
|
if (ret != 0)
|
|
dev_err(d->dev,
|
|
"ASoC: Failed to turn on bias: %d\n", ret);
|
|
}
|
|
|
|
/* Prepare for a transition to ON or away from ON */
|
|
if ((d->target_bias_level == SND_SOC_BIAS_ON &&
|
|
d->bias_level != SND_SOC_BIAS_ON) ||
|
|
(d->target_bias_level != SND_SOC_BIAS_ON &&
|
|
d->bias_level == SND_SOC_BIAS_ON)) {
|
|
ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
|
|
if (ret != 0)
|
|
dev_err(d->dev,
|
|
"ASoC: Failed to prepare bias: %d\n", ret);
|
|
}
|
|
}
|
|
|
|
/* Async callback run prior to DAPM sequences - brings to their final
|
|
* state.
|
|
*/
|
|
static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
|
|
{
|
|
struct snd_soc_dapm_context *d = data;
|
|
int ret;
|
|
|
|
/* If we just powered the last thing off drop to standby bias */
|
|
if (d->bias_level == SND_SOC_BIAS_PREPARE &&
|
|
(d->target_bias_level == SND_SOC_BIAS_STANDBY ||
|
|
d->target_bias_level == SND_SOC_BIAS_OFF)) {
|
|
ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
|
|
if (ret != 0)
|
|
dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
|
|
ret);
|
|
}
|
|
|
|
/* If we're in standby and can support bias off then do that */
|
|
if (d->bias_level == SND_SOC_BIAS_STANDBY &&
|
|
d->target_bias_level == SND_SOC_BIAS_OFF) {
|
|
ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
|
|
if (ret != 0)
|
|
dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
|
|
ret);
|
|
|
|
if (d->dev && cookie)
|
|
pm_runtime_put(d->dev);
|
|
}
|
|
|
|
/* If we just powered up then move to active bias */
|
|
if (d->bias_level == SND_SOC_BIAS_PREPARE &&
|
|
d->target_bias_level == SND_SOC_BIAS_ON) {
|
|
ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
|
|
if (ret != 0)
|
|
dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
|
|
ret);
|
|
}
|
|
}
|
|
|
|
static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
|
|
bool power, bool connect)
|
|
{
|
|
/* If a connection is being made or broken then that update
|
|
* will have marked the peer dirty, otherwise the widgets are
|
|
* not connected and this update has no impact. */
|
|
if (!connect)
|
|
return;
|
|
|
|
/* If the peer is already in the state we're moving to then we
|
|
* won't have an impact on it. */
|
|
if (power != peer->power)
|
|
dapm_mark_dirty(peer, "peer state change");
|
|
}
|
|
|
|
static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
|
|
struct list_head *up_list,
|
|
struct list_head *down_list)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
int power;
|
|
|
|
switch (w->id) {
|
|
case snd_soc_dapm_pre:
|
|
power = 0;
|
|
goto end;
|
|
case snd_soc_dapm_post:
|
|
power = 1;
|
|
goto end;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
power = dapm_widget_power_check(w);
|
|
|
|
if (w->power == power)
|
|
return;
|
|
|
|
trace_snd_soc_dapm_widget_power(w, power);
|
|
|
|
/*
|
|
* If we changed our power state perhaps our neigbours
|
|
* changed also.
|
|
*/
|
|
snd_soc_dapm_widget_for_each_source_path(w, path)
|
|
dapm_widget_set_peer_power(path->source, power, path->connect);
|
|
|
|
/*
|
|
* Supplies can't affect their outputs, only their inputs
|
|
*/
|
|
if (!w->is_supply)
|
|
snd_soc_dapm_widget_for_each_sink_path(w, path)
|
|
dapm_widget_set_peer_power(path->sink, power, path->connect);
|
|
|
|
end:
|
|
if (power)
|
|
dapm_seq_insert(w, up_list, true);
|
|
else
|
|
dapm_seq_insert(w, down_list, false);
|
|
}
|
|
|
|
static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
if (dapm->idle_bias_off)
|
|
return true;
|
|
|
|
switch (snd_power_get_state(dapm->card->snd_card)) {
|
|
case SNDRV_CTL_POWER_D3hot:
|
|
case SNDRV_CTL_POWER_D3cold:
|
|
return dapm->suspend_bias_off;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* 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_card *card, int event)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
struct snd_soc_dapm_context *d;
|
|
LIST_HEAD(up_list);
|
|
LIST_HEAD(down_list);
|
|
ASYNC_DOMAIN_EXCLUSIVE(async_domain);
|
|
enum snd_soc_bias_level bias;
|
|
int ret;
|
|
|
|
snd_soc_dapm_mutex_assert_held(card);
|
|
|
|
trace_snd_soc_dapm_start(card);
|
|
|
|
for_each_card_dapms(card, d) {
|
|
if (dapm_idle_bias_off(d))
|
|
d->target_bias_level = SND_SOC_BIAS_OFF;
|
|
else
|
|
d->target_bias_level = SND_SOC_BIAS_STANDBY;
|
|
}
|
|
|
|
dapm_reset(card);
|
|
|
|
/* Check which widgets we need to power and store them in
|
|
* lists indicating if they should be powered up or down. We
|
|
* only check widgets that have been flagged as dirty but note
|
|
* that new widgets may be added to the dirty list while we
|
|
* iterate.
|
|
*/
|
|
list_for_each_entry(w, &card->dapm_dirty, dirty) {
|
|
dapm_power_one_widget(w, &up_list, &down_list);
|
|
}
|
|
|
|
for_each_card_widgets(card, w) {
|
|
switch (w->id) {
|
|
case snd_soc_dapm_pre:
|
|
case snd_soc_dapm_post:
|
|
/* These widgets always need to be powered */
|
|
break;
|
|
default:
|
|
list_del_init(&w->dirty);
|
|
break;
|
|
}
|
|
|
|
if (w->new_power) {
|
|
d = w->dapm;
|
|
|
|
/* Supplies and micbiases only bring the
|
|
* context up to STANDBY as unless something
|
|
* else is active and passing audio they
|
|
* generally don't require full power. Signal
|
|
* generators are virtual pins and have no
|
|
* power impact themselves.
|
|
*/
|
|
switch (w->id) {
|
|
case snd_soc_dapm_siggen:
|
|
case snd_soc_dapm_vmid:
|
|
break;
|
|
case snd_soc_dapm_supply:
|
|
case snd_soc_dapm_regulator_supply:
|
|
case snd_soc_dapm_pinctrl:
|
|
case snd_soc_dapm_clock_supply:
|
|
case snd_soc_dapm_micbias:
|
|
if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
|
|
d->target_bias_level = SND_SOC_BIAS_STANDBY;
|
|
break;
|
|
default:
|
|
d->target_bias_level = SND_SOC_BIAS_ON;
|
|
break;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/* Force all contexts in the card to the same bias state if
|
|
* they're not ground referenced.
|
|
*/
|
|
bias = SND_SOC_BIAS_OFF;
|
|
for_each_card_dapms(card, d)
|
|
if (d->target_bias_level > bias)
|
|
bias = d->target_bias_level;
|
|
for_each_card_dapms(card, d)
|
|
if (!dapm_idle_bias_off(d))
|
|
d->target_bias_level = bias;
|
|
|
|
trace_snd_soc_dapm_walk_done(card);
|
|
|
|
/* Run card bias changes at first */
|
|
dapm_pre_sequence_async(&card->dapm, 0);
|
|
/* Run other bias changes in parallel */
|
|
for_each_card_dapms(card, d) {
|
|
if (d != &card->dapm && d->bias_level != d->target_bias_level)
|
|
async_schedule_domain(dapm_pre_sequence_async, d,
|
|
&async_domain);
|
|
}
|
|
async_synchronize_full_domain(&async_domain);
|
|
|
|
list_for_each_entry(w, &down_list, power_list) {
|
|
dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
|
|
}
|
|
|
|
list_for_each_entry(w, &up_list, power_list) {
|
|
dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
|
|
}
|
|
|
|
/* Power down widgets first; try to avoid amplifying pops. */
|
|
dapm_seq_run(card, &down_list, event, false);
|
|
|
|
dapm_widget_update(card);
|
|
|
|
/* Now power up. */
|
|
dapm_seq_run(card, &up_list, event, true);
|
|
|
|
/* Run all the bias changes in parallel */
|
|
for_each_card_dapms(card, d) {
|
|
if (d != &card->dapm && d->bias_level != d->target_bias_level)
|
|
async_schedule_domain(dapm_post_sequence_async, d,
|
|
&async_domain);
|
|
}
|
|
async_synchronize_full_domain(&async_domain);
|
|
/* Run card bias changes at last */
|
|
dapm_post_sequence_async(&card->dapm, 0);
|
|
|
|
/* do we need to notify any clients that DAPM event is complete */
|
|
for_each_card_dapms(card, d) {
|
|
if (!d->component)
|
|
continue;
|
|
|
|
ret = snd_soc_component_stream_event(d->component, event);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
pop_dbg(card->dev, card->pop_time,
|
|
"DAPM sequencing finished, waiting %dms\n", card->pop_time);
|
|
pop_wait(card->pop_time);
|
|
|
|
trace_snd_soc_dapm_done(card);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
static 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;
|
|
enum snd_soc_dapm_direction dir, rdir;
|
|
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;
|
|
|
|
snd_soc_dapm_mutex_lock_root(w->dapm);
|
|
|
|
/* Supply widgets are not handled by is_connected_{input,output}_ep() */
|
|
if (w->is_supply) {
|
|
in = 0;
|
|
out = 0;
|
|
} else {
|
|
in = is_connected_input_ep(w, NULL, NULL);
|
|
out = is_connected_output_ep(w, NULL, NULL);
|
|
}
|
|
|
|
ret = scnprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
|
|
w->name, w->power ? "On" : "Off",
|
|
w->force ? " (forced)" : "", in, out);
|
|
|
|
if (w->reg >= 0)
|
|
ret += scnprintf(buf + ret, PAGE_SIZE - ret,
|
|
" - R%d(0x%x) mask 0x%x",
|
|
w->reg, w->reg, w->mask << w->shift);
|
|
|
|
ret += scnprintf(buf + ret, PAGE_SIZE - ret, "\n");
|
|
|
|
if (w->sname)
|
|
ret += scnprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
|
|
w->sname,
|
|
w->active ? "active" : "inactive");
|
|
|
|
snd_soc_dapm_for_each_direction(dir) {
|
|
rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
|
|
snd_soc_dapm_widget_for_each_path(w, dir, p) {
|
|
if (p->connected && !p->connected(p->source, p->sink))
|
|
continue;
|
|
|
|
if (!p->connect)
|
|
continue;
|
|
|
|
ret += scnprintf(buf + ret, PAGE_SIZE - ret,
|
|
" %s \"%s\" \"%s\"\n",
|
|
(rdir == SND_SOC_DAPM_DIR_IN) ? "in" : "out",
|
|
p->name ? p->name : "static",
|
|
p->node[rdir]->name);
|
|
}
|
|
}
|
|
|
|
snd_soc_dapm_mutex_unlock(w->dapm);
|
|
|
|
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 = simple_open,
|
|
.read = dapm_widget_power_read_file,
|
|
.llseek = default_llseek,
|
|
};
|
|
|
|
static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct snd_soc_dapm_context *dapm = file->private_data;
|
|
char *level;
|
|
|
|
switch (dapm->bias_level) {
|
|
case SND_SOC_BIAS_ON:
|
|
level = "On\n";
|
|
break;
|
|
case SND_SOC_BIAS_PREPARE:
|
|
level = "Prepare\n";
|
|
break;
|
|
case SND_SOC_BIAS_STANDBY:
|
|
level = "Standby\n";
|
|
break;
|
|
case SND_SOC_BIAS_OFF:
|
|
level = "Off\n";
|
|
break;
|
|
default:
|
|
WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
|
|
level = "Unknown\n";
|
|
break;
|
|
}
|
|
|
|
return simple_read_from_buffer(user_buf, count, ppos, level,
|
|
strlen(level));
|
|
}
|
|
|
|
static const struct file_operations dapm_bias_fops = {
|
|
.open = simple_open,
|
|
.read = dapm_bias_read_file,
|
|
.llseek = default_llseek,
|
|
};
|
|
|
|
void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
|
|
struct dentry *parent)
|
|
{
|
|
if (!parent || IS_ERR(parent))
|
|
return;
|
|
|
|
dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
|
|
|
|
debugfs_create_file("bias_level", 0444, dapm->debugfs_dapm, dapm,
|
|
&dapm_bias_fops);
|
|
}
|
|
|
|
static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
|
|
{
|
|
struct snd_soc_dapm_context *dapm = w->dapm;
|
|
|
|
if (!dapm->debugfs_dapm || !w->name)
|
|
return;
|
|
|
|
debugfs_create_file(w->name, 0444, dapm->debugfs_dapm, w,
|
|
&dapm_widget_power_fops);
|
|
}
|
|
|
|
static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
debugfs_remove_recursive(dapm->debugfs_dapm);
|
|
dapm->debugfs_dapm = NULL;
|
|
}
|
|
|
|
#else
|
|
void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
|
|
struct dentry *parent)
|
|
{
|
|
}
|
|
|
|
static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
|
|
{
|
|
}
|
|
|
|
static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* soc_dapm_connect_path() - Connects or disconnects a path
|
|
* @path: The path to update
|
|
* @connect: The new connect state of the path. True if the path is connected,
|
|
* false if it is disconnected.
|
|
* @reason: The reason why the path changed (for debugging only)
|
|
*/
|
|
static void soc_dapm_connect_path(struct snd_soc_dapm_path *path,
|
|
bool connect, const char *reason)
|
|
{
|
|
if (path->connect == connect)
|
|
return;
|
|
|
|
path->connect = connect;
|
|
dapm_mark_dirty(path->source, reason);
|
|
dapm_mark_dirty(path->sink, reason);
|
|
dapm_path_invalidate(path);
|
|
}
|
|
|
|
/* test and update the power status of a mux widget */
|
|
static int soc_dapm_mux_update_power(struct snd_soc_card *card,
|
|
struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
int found = 0;
|
|
bool connect;
|
|
|
|
snd_soc_dapm_mutex_assert_held(card);
|
|
|
|
/* find dapm widget path assoc with kcontrol */
|
|
dapm_kcontrol_for_each_path(path, kcontrol) {
|
|
found = 1;
|
|
/* we now need to match the string in the enum to the path */
|
|
if (e && !(strcmp(path->name, e->texts[mux])))
|
|
connect = true;
|
|
else
|
|
connect = false;
|
|
|
|
soc_dapm_connect_path(path, connect, "mux update");
|
|
}
|
|
|
|
if (found)
|
|
dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
|
|
|
|
return found;
|
|
}
|
|
|
|
int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
|
|
struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
|
|
struct snd_soc_dapm_update *update)
|
|
{
|
|
struct snd_soc_card *card = dapm->card;
|
|
int ret;
|
|
|
|
snd_soc_dapm_mutex_lock(card);
|
|
card->update = update;
|
|
ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
|
|
card->update = NULL;
|
|
snd_soc_dapm_mutex_unlock(card);
|
|
if (ret > 0)
|
|
snd_soc_dpcm_runtime_update(card);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
|
|
|
|
/* test and update the power status of a mixer or switch widget */
|
|
static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
|
|
struct snd_kcontrol *kcontrol,
|
|
int connect, int rconnect)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
int found = 0;
|
|
|
|
snd_soc_dapm_mutex_assert_held(card);
|
|
|
|
/* find dapm widget path assoc with kcontrol */
|
|
dapm_kcontrol_for_each_path(path, kcontrol) {
|
|
/*
|
|
* Ideally this function should support any number of
|
|
* paths and channels. But since kcontrols only come
|
|
* in mono and stereo variants, we are limited to 2
|
|
* channels.
|
|
*
|
|
* The following code assumes for stereo controls the
|
|
* first path (when 'found == 0') is the left channel,
|
|
* and all remaining paths (when 'found == 1') are the
|
|
* right channel.
|
|
*
|
|
* A stereo control is signified by a valid 'rconnect'
|
|
* value, either 0 for unconnected, or >= 0 for connected.
|
|
* This is chosen instead of using snd_soc_volsw_is_stereo,
|
|
* so that the behavior of snd_soc_dapm_mixer_update_power
|
|
* doesn't change even when the kcontrol passed in is
|
|
* stereo.
|
|
*
|
|
* It passes 'connect' as the path connect status for
|
|
* the left channel, and 'rconnect' for the right
|
|
* channel.
|
|
*/
|
|
if (found && rconnect >= 0)
|
|
soc_dapm_connect_path(path, rconnect, "mixer update");
|
|
else
|
|
soc_dapm_connect_path(path, connect, "mixer update");
|
|
found = 1;
|
|
}
|
|
|
|
if (found)
|
|
dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
|
|
|
|
return found;
|
|
}
|
|
|
|
int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
|
|
struct snd_kcontrol *kcontrol, int connect,
|
|
struct snd_soc_dapm_update *update)
|
|
{
|
|
struct snd_soc_card *card = dapm->card;
|
|
int ret;
|
|
|
|
snd_soc_dapm_mutex_lock(card);
|
|
card->update = update;
|
|
ret = soc_dapm_mixer_update_power(card, kcontrol, connect, -1);
|
|
card->update = NULL;
|
|
snd_soc_dapm_mutex_unlock(card);
|
|
if (ret > 0)
|
|
snd_soc_dpcm_runtime_update(card);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
|
|
|
|
static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
|
|
char *buf, int count)
|
|
{
|
|
struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt);
|
|
struct snd_soc_dapm_widget *w;
|
|
char *state = "not set";
|
|
|
|
/* card won't be set for the dummy component, as a spot fix
|
|
* we're checking for that case specifically here but in future
|
|
* we will ensure that the dummy component looks like others.
|
|
*/
|
|
if (!cmpnt->card)
|
|
return 0;
|
|
|
|
for_each_card_widgets(cmpnt->card, w) {
|
|
if (w->dapm != dapm)
|
|
continue;
|
|
|
|
/* only display widgets that burn 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_effect:
|
|
case snd_soc_dapm_out_drv:
|
|
case snd_soc_dapm_mixer:
|
|
case snd_soc_dapm_mixer_named_ctl:
|
|
case snd_soc_dapm_supply:
|
|
case snd_soc_dapm_regulator_supply:
|
|
case snd_soc_dapm_pinctrl:
|
|
case snd_soc_dapm_clock_supply:
|
|
if (w->name)
|
|
count += sysfs_emit_at(buf, count, "%s: %s\n",
|
|
w->name, w->power ? "On":"Off");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
switch (snd_soc_dapm_get_bias_level(dapm)) {
|
|
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 += sysfs_emit_at(buf, count, "PM State: %s\n", state);
|
|
|
|
return count;
|
|
}
|
|
|
|
/* show dapm widget status in sys fs */
|
|
static ssize_t dapm_widget_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
|
|
struct snd_soc_dai *codec_dai;
|
|
int i, count = 0;
|
|
|
|
snd_soc_dapm_mutex_lock_root(rtd->card);
|
|
|
|
for_each_rtd_codec_dais(rtd, i, codec_dai) {
|
|
struct snd_soc_component *cmpnt = codec_dai->component;
|
|
|
|
count = dapm_widget_show_component(cmpnt, buf, count);
|
|
}
|
|
|
|
snd_soc_dapm_mutex_unlock(rtd->card);
|
|
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR_RO(dapm_widget);
|
|
|
|
struct attribute *soc_dapm_dev_attrs[] = {
|
|
&dev_attr_dapm_widget.attr,
|
|
NULL
|
|
};
|
|
|
|
static void dapm_free_path(struct snd_soc_dapm_path *path)
|
|
{
|
|
list_del(&path->list_node[SND_SOC_DAPM_DIR_IN]);
|
|
list_del(&path->list_node[SND_SOC_DAPM_DIR_OUT]);
|
|
list_del(&path->list_kcontrol);
|
|
list_del(&path->list);
|
|
kfree(path);
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_free_widget - Free specified widget
|
|
* @w: widget to free
|
|
*
|
|
* Removes widget from all paths and frees memory occupied by it.
|
|
*/
|
|
void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w)
|
|
{
|
|
struct snd_soc_dapm_path *p, *next_p;
|
|
enum snd_soc_dapm_direction dir;
|
|
|
|
if (!w)
|
|
return;
|
|
|
|
list_del(&w->list);
|
|
list_del(&w->dirty);
|
|
/*
|
|
* remove source and sink paths associated to this widget.
|
|
* While removing the path, remove reference to it from both
|
|
* source and sink widgets so that path is removed only once.
|
|
*/
|
|
snd_soc_dapm_for_each_direction(dir) {
|
|
snd_soc_dapm_widget_for_each_path_safe(w, dir, p, next_p)
|
|
dapm_free_path(p);
|
|
}
|
|
|
|
kfree(w->kcontrols);
|
|
kfree_const(w->name);
|
|
kfree_const(w->sname);
|
|
kfree(w);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_free_widget);
|
|
|
|
/* free all dapm widgets and resources */
|
|
static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
struct snd_soc_dapm_widget *w, *next_w;
|
|
|
|
for_each_card_widgets_safe(dapm->card, w, next_w) {
|
|
if (w->dapm != dapm)
|
|
continue;
|
|
snd_soc_dapm_free_widget(w);
|
|
}
|
|
|
|
dapm->wcache_sink = NULL;
|
|
dapm->wcache_source = NULL;
|
|
}
|
|
|
|
static struct snd_soc_dapm_widget *dapm_find_widget(
|
|
struct snd_soc_dapm_context *dapm, const char *pin,
|
|
bool search_other_contexts)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
struct snd_soc_dapm_widget *fallback = NULL;
|
|
char prefixed_pin[80];
|
|
const char *pin_name;
|
|
const char *prefix = soc_dapm_prefix(dapm);
|
|
|
|
if (prefix) {
|
|
snprintf(prefixed_pin, sizeof(prefixed_pin), "%s %s",
|
|
prefix, pin);
|
|
pin_name = prefixed_pin;
|
|
} else {
|
|
pin_name = pin;
|
|
}
|
|
|
|
for_each_card_widgets(dapm->card, w) {
|
|
if (!strcmp(w->name, pin_name)) {
|
|
if (w->dapm == dapm)
|
|
return w;
|
|
else
|
|
fallback = w;
|
|
}
|
|
}
|
|
|
|
if (search_other_contexts)
|
|
return fallback;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* set the DAPM pin status:
|
|
* returns 1 when the value has been updated, 0 when unchanged, or a negative
|
|
* error code; called from kcontrol put callback
|
|
*/
|
|
static int __snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
|
|
const char *pin, int status)
|
|
{
|
|
struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
|
|
int ret = 0;
|
|
|
|
dapm_assert_locked(dapm);
|
|
|
|
if (!w) {
|
|
dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (w->connected != status) {
|
|
dapm_mark_dirty(w, "pin configuration");
|
|
dapm_widget_invalidate_input_paths(w);
|
|
dapm_widget_invalidate_output_paths(w);
|
|
ret = 1;
|
|
}
|
|
|
|
w->connected = status;
|
|
if (status == 0)
|
|
w->force = 0;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* similar as __snd_soc_dapm_set_pin(), but returns 0 when successful;
|
|
* called from several API functions below
|
|
*/
|
|
static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
|
|
const char *pin, int status)
|
|
{
|
|
int ret = __snd_soc_dapm_set_pin(dapm, pin, status);
|
|
|
|
return ret < 0 ? ret : 0;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_sync_unlocked - scan and power dapm paths
|
|
* @dapm: DAPM context
|
|
*
|
|
* Walks all dapm audio paths and powers widgets according to their
|
|
* stream or path usage.
|
|
*
|
|
* Requires external locking.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
/*
|
|
* Suppress early reports (eg, jacks syncing their state) to avoid
|
|
* silly DAPM runs during card startup.
|
|
*/
|
|
if (!snd_soc_card_is_instantiated(dapm->card))
|
|
return 0;
|
|
|
|
return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
|
|
|
|
/**
|
|
* snd_soc_dapm_sync - scan and power dapm paths
|
|
* @dapm: DAPM context
|
|
*
|
|
* Walks all dapm audio paths and powers widgets according to their
|
|
* stream or path usage.
|
|
*
|
|
* Returns 0 for success.
|
|
*/
|
|
int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
int ret;
|
|
|
|
snd_soc_dapm_mutex_lock(dapm);
|
|
ret = snd_soc_dapm_sync_unlocked(dapm);
|
|
snd_soc_dapm_mutex_unlock(dapm);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
|
|
|
|
static int dapm_update_dai_chan(struct snd_soc_dapm_path *p,
|
|
struct snd_soc_dapm_widget *w,
|
|
int channels)
|
|
{
|
|
switch (w->id) {
|
|
case snd_soc_dapm_aif_out:
|
|
case snd_soc_dapm_aif_in:
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
dev_dbg(w->dapm->dev, "%s DAI route %s -> %s\n",
|
|
w->channel < channels ? "Connecting" : "Disconnecting",
|
|
p->source->name, p->sink->name);
|
|
|
|
if (w->channel < channels)
|
|
soc_dapm_connect_path(p, true, "dai update");
|
|
else
|
|
soc_dapm_connect_path(p, false, "dai update");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dapm_update_dai_unlocked(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
int dir = substream->stream;
|
|
int channels = params_channels(params);
|
|
struct snd_soc_dapm_path *p;
|
|
struct snd_soc_dapm_widget *w;
|
|
int ret;
|
|
|
|
w = snd_soc_dai_get_widget(dai, dir);
|
|
|
|
if (!w)
|
|
return 0;
|
|
|
|
dev_dbg(dai->dev, "Update DAI routes for %s %s\n", dai->name,
|
|
dir == SNDRV_PCM_STREAM_PLAYBACK ? "playback" : "capture");
|
|
|
|
snd_soc_dapm_widget_for_each_sink_path(w, p) {
|
|
ret = dapm_update_dai_chan(p, p->sink, channels);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
snd_soc_dapm_widget_for_each_source_path(w, p) {
|
|
ret = dapm_update_dai_chan(p, p->source, channels);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int snd_soc_dapm_update_dai(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
|
|
int ret;
|
|
|
|
snd_soc_dapm_mutex_lock(rtd->card);
|
|
ret = dapm_update_dai_unlocked(substream, params, dai);
|
|
snd_soc_dapm_mutex_unlock(rtd->card);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_update_dai);
|
|
|
|
/*
|
|
* dapm_update_widget_flags() - Re-compute widget sink and source flags
|
|
* @w: The widget for which to update the flags
|
|
*
|
|
* Some widgets have a dynamic category which depends on which neighbors they
|
|
* are connected to. This function update the category for these widgets.
|
|
*
|
|
* This function must be called whenever a path is added or removed to a widget.
|
|
*/
|
|
static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
|
|
{
|
|
enum snd_soc_dapm_direction dir;
|
|
struct snd_soc_dapm_path *p;
|
|
unsigned int ep;
|
|
|
|
switch (w->id) {
|
|
case snd_soc_dapm_input:
|
|
/* On a fully routed card an input is never a source */
|
|
if (w->dapm->card->fully_routed)
|
|
return;
|
|
ep = SND_SOC_DAPM_EP_SOURCE;
|
|
snd_soc_dapm_widget_for_each_source_path(w, p) {
|
|
if (p->source->id == snd_soc_dapm_micbias ||
|
|
p->source->id == snd_soc_dapm_mic ||
|
|
p->source->id == snd_soc_dapm_line ||
|
|
p->source->id == snd_soc_dapm_output) {
|
|
ep = 0;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case snd_soc_dapm_output:
|
|
/* On a fully routed card a output is never a sink */
|
|
if (w->dapm->card->fully_routed)
|
|
return;
|
|
ep = SND_SOC_DAPM_EP_SINK;
|
|
snd_soc_dapm_widget_for_each_sink_path(w, p) {
|
|
if (p->sink->id == snd_soc_dapm_spk ||
|
|
p->sink->id == snd_soc_dapm_hp ||
|
|
p->sink->id == snd_soc_dapm_line ||
|
|
p->sink->id == snd_soc_dapm_input) {
|
|
ep = 0;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case snd_soc_dapm_line:
|
|
ep = 0;
|
|
snd_soc_dapm_for_each_direction(dir) {
|
|
if (!list_empty(&w->edges[dir]))
|
|
ep |= SND_SOC_DAPM_DIR_TO_EP(dir);
|
|
}
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
w->is_ep = ep;
|
|
}
|
|
|
|
static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context *dapm,
|
|
struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink,
|
|
const char *control)
|
|
{
|
|
bool dynamic_source = false;
|
|
bool dynamic_sink = false;
|
|
|
|
if (!control)
|
|
return 0;
|
|
|
|
switch (source->id) {
|
|
case snd_soc_dapm_demux:
|
|
dynamic_source = true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
switch (sink->id) {
|
|
case snd_soc_dapm_mux:
|
|
case snd_soc_dapm_switch:
|
|
case snd_soc_dapm_mixer:
|
|
case snd_soc_dapm_mixer_named_ctl:
|
|
dynamic_sink = true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (dynamic_source && dynamic_sink) {
|
|
dev_err(dapm->dev,
|
|
"Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
|
|
source->name, control, sink->name);
|
|
return -EINVAL;
|
|
} else if (!dynamic_source && !dynamic_sink) {
|
|
dev_err(dapm->dev,
|
|
"Control not supported for path %s -> [%s] -> %s\n",
|
|
source->name, control, sink->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
|
|
struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
|
|
const char *control,
|
|
int (*connected)(struct snd_soc_dapm_widget *source,
|
|
struct snd_soc_dapm_widget *sink))
|
|
{
|
|
enum snd_soc_dapm_direction dir;
|
|
struct snd_soc_dapm_path *path;
|
|
int ret;
|
|
|
|
if (wsink->is_supply && !wsource->is_supply) {
|
|
dev_err(dapm->dev,
|
|
"Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
|
|
wsource->name, wsink->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (connected && !wsource->is_supply) {
|
|
dev_err(dapm->dev,
|
|
"connected() callback only supported for supply widgets (%s -> %s)\n",
|
|
wsource->name, wsink->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (wsource->is_supply && control) {
|
|
dev_err(dapm->dev,
|
|
"Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
|
|
wsource->name, control, wsink->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = snd_soc_dapm_check_dynamic_path(dapm, wsource, wsink, control);
|
|
if (ret)
|
|
return ret;
|
|
|
|
path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
|
|
if (!path)
|
|
return -ENOMEM;
|
|
|
|
path->node[SND_SOC_DAPM_DIR_IN] = wsource;
|
|
path->node[SND_SOC_DAPM_DIR_OUT] = wsink;
|
|
|
|
path->connected = connected;
|
|
INIT_LIST_HEAD(&path->list);
|
|
INIT_LIST_HEAD(&path->list_kcontrol);
|
|
|
|
if (wsource->is_supply || wsink->is_supply)
|
|
path->is_supply = 1;
|
|
|
|
/* connect static paths */
|
|
if (control == NULL) {
|
|
path->connect = 1;
|
|
} else {
|
|
switch (wsource->id) {
|
|
case snd_soc_dapm_demux:
|
|
ret = dapm_connect_mux(dapm, path, control, wsource);
|
|
if (ret)
|
|
goto err;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
switch (wsink->id) {
|
|
case snd_soc_dapm_mux:
|
|
ret = dapm_connect_mux(dapm, path, control, wsink);
|
|
if (ret != 0)
|
|
goto err;
|
|
break;
|
|
case snd_soc_dapm_switch:
|
|
case snd_soc_dapm_mixer:
|
|
case snd_soc_dapm_mixer_named_ctl:
|
|
ret = dapm_connect_mixer(dapm, path, control);
|
|
if (ret != 0)
|
|
goto err;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
list_add(&path->list, &dapm->card->paths);
|
|
|
|
snd_soc_dapm_for_each_direction(dir)
|
|
list_add(&path->list_node[dir], &path->node[dir]->edges[dir]);
|
|
|
|
snd_soc_dapm_for_each_direction(dir) {
|
|
dapm_update_widget_flags(path->node[dir]);
|
|
dapm_mark_dirty(path->node[dir], "Route added");
|
|
}
|
|
|
|
if (snd_soc_card_is_instantiated(dapm->card) && path->connect)
|
|
dapm_path_invalidate(path);
|
|
|
|
return 0;
|
|
err:
|
|
kfree(path);
|
|
return ret;
|
|
}
|
|
|
|
static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
|
|
const struct snd_soc_dapm_route *route)
|
|
{
|
|
struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
|
|
struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
|
|
const char *sink;
|
|
const char *source;
|
|
char prefixed_sink[80];
|
|
char prefixed_source[80];
|
|
const char *prefix;
|
|
unsigned int sink_ref = 0;
|
|
unsigned int source_ref = 0;
|
|
int ret;
|
|
|
|
prefix = soc_dapm_prefix(dapm);
|
|
if (prefix) {
|
|
snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
|
|
prefix, route->sink);
|
|
sink = prefixed_sink;
|
|
snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
|
|
prefix, route->source);
|
|
source = prefixed_source;
|
|
} else {
|
|
sink = route->sink;
|
|
source = route->source;
|
|
}
|
|
|
|
wsource = dapm_wcache_lookup(dapm->wcache_source, source);
|
|
wsink = dapm_wcache_lookup(dapm->wcache_sink, sink);
|
|
|
|
if (wsink && wsource)
|
|
goto skip_search;
|
|
|
|
/*
|
|
* find src and dest widgets over all widgets but favor a widget from
|
|
* current DAPM context
|
|
*/
|
|
for_each_card_widgets(dapm->card, w) {
|
|
if (!wsink && !(strcmp(w->name, sink))) {
|
|
wtsink = w;
|
|
if (w->dapm == dapm) {
|
|
wsink = w;
|
|
if (wsource)
|
|
break;
|
|
}
|
|
sink_ref++;
|
|
if (sink_ref > 1)
|
|
dev_warn(dapm->dev,
|
|
"ASoC: sink widget %s overwritten\n",
|
|
w->name);
|
|
continue;
|
|
}
|
|
if (!wsource && !(strcmp(w->name, source))) {
|
|
wtsource = w;
|
|
if (w->dapm == dapm) {
|
|
wsource = w;
|
|
if (wsink)
|
|
break;
|
|
}
|
|
source_ref++;
|
|
if (source_ref > 1)
|
|
dev_warn(dapm->dev,
|
|
"ASoC: source widget %s overwritten\n",
|
|
w->name);
|
|
}
|
|
}
|
|
/* use widget from another DAPM context if not found from this */
|
|
if (!wsink)
|
|
wsink = wtsink;
|
|
if (!wsource)
|
|
wsource = wtsource;
|
|
|
|
ret = -ENODEV;
|
|
if (!wsource)
|
|
goto err;
|
|
if (!wsink)
|
|
goto err;
|
|
|
|
skip_search:
|
|
/* update cache */
|
|
dapm->wcache_sink = wsink;
|
|
dapm->wcache_source = wsource;
|
|
|
|
ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
|
|
route->connected);
|
|
err:
|
|
if (ret)
|
|
dev_err(dapm->dev, "ASoC: Failed to add route %s%s -%s%s%s> %s%s\n",
|
|
source, !wsource ? "(*)" : "",
|
|
!route->control ? "" : "> [",
|
|
!route->control ? "" : route->control,
|
|
!route->control ? "" : "] -",
|
|
sink, !wsink ? "(*)" : "");
|
|
return ret;
|
|
}
|
|
|
|
static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
|
|
const struct snd_soc_dapm_route *route)
|
|
{
|
|
struct snd_soc_dapm_path *path, *p;
|
|
const char *sink;
|
|
const char *source;
|
|
char prefixed_sink[80];
|
|
char prefixed_source[80];
|
|
const char *prefix;
|
|
|
|
if (route->control) {
|
|
dev_err(dapm->dev,
|
|
"ASoC: Removal of routes with controls not supported\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
prefix = soc_dapm_prefix(dapm);
|
|
if (prefix) {
|
|
snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
|
|
prefix, route->sink);
|
|
sink = prefixed_sink;
|
|
snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
|
|
prefix, route->source);
|
|
source = prefixed_source;
|
|
} else {
|
|
sink = route->sink;
|
|
source = route->source;
|
|
}
|
|
|
|
path = NULL;
|
|
list_for_each_entry(p, &dapm->card->paths, list) {
|
|
if (strcmp(p->source->name, source) != 0)
|
|
continue;
|
|
if (strcmp(p->sink->name, sink) != 0)
|
|
continue;
|
|
path = p;
|
|
break;
|
|
}
|
|
|
|
if (path) {
|
|
struct snd_soc_dapm_widget *wsource = path->source;
|
|
struct snd_soc_dapm_widget *wsink = path->sink;
|
|
|
|
dapm_mark_dirty(wsource, "Route removed");
|
|
dapm_mark_dirty(wsink, "Route removed");
|
|
if (path->connect)
|
|
dapm_path_invalidate(path);
|
|
|
|
dapm_free_path(path);
|
|
|
|
/* Update any path related flags */
|
|
dapm_update_widget_flags(wsource);
|
|
dapm_update_widget_flags(wsink);
|
|
} else {
|
|
dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
|
|
source, sink);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_add_routes - Add routes between DAPM widgets
|
|
* @dapm: DAPM context
|
|
* @route: audio routes
|
|
* @num: number of routes
|
|
*
|
|
* Connects 2 dapm widgets together via a named audio path. The sink is
|
|
* the widget receiving the audio signal, whilst the source is the sender
|
|
* of the audio signal.
|
|
*
|
|
* Returns 0 for success else error. On error all resources can be freed
|
|
* with a call to snd_soc_card_free().
|
|
*/
|
|
int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
|
|
const struct snd_soc_dapm_route *route, int num)
|
|
{
|
|
int i, ret = 0;
|
|
|
|
snd_soc_dapm_mutex_lock(dapm);
|
|
for (i = 0; i < num; i++) {
|
|
int r = snd_soc_dapm_add_route(dapm, route);
|
|
if (r < 0)
|
|
ret = r;
|
|
route++;
|
|
}
|
|
snd_soc_dapm_mutex_unlock(dapm);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
|
|
|
|
/**
|
|
* snd_soc_dapm_del_routes - Remove routes between DAPM widgets
|
|
* @dapm: DAPM context
|
|
* @route: audio routes
|
|
* @num: number of routes
|
|
*
|
|
* Removes routes from the DAPM context.
|
|
*/
|
|
int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
|
|
const struct snd_soc_dapm_route *route, int num)
|
|
{
|
|
int i;
|
|
|
|
snd_soc_dapm_mutex_lock(dapm);
|
|
for (i = 0; i < num; i++) {
|
|
snd_soc_dapm_del_route(dapm, route);
|
|
route++;
|
|
}
|
|
snd_soc_dapm_mutex_unlock(dapm);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
|
|
|
|
static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
|
|
const struct snd_soc_dapm_route *route)
|
|
{
|
|
struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
|
|
route->source,
|
|
true);
|
|
struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
|
|
route->sink,
|
|
true);
|
|
struct snd_soc_dapm_path *path;
|
|
int count = 0;
|
|
|
|
if (!source) {
|
|
dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
|
|
route->source);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!sink) {
|
|
dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
|
|
route->sink);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (route->control || route->connected)
|
|
dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
|
|
route->source, route->sink);
|
|
|
|
snd_soc_dapm_widget_for_each_sink_path(source, path) {
|
|
if (path->sink == sink) {
|
|
path->weak = 1;
|
|
count++;
|
|
}
|
|
}
|
|
|
|
if (count == 0)
|
|
dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
|
|
route->source, route->sink);
|
|
if (count > 1)
|
|
dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
|
|
count, route->source, route->sink);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
|
|
* @dapm: DAPM context
|
|
* @route: audio routes
|
|
* @num: number of routes
|
|
*
|
|
* Mark existing routes matching those specified in the passed array
|
|
* as being weak, meaning that they are ignored for the purpose of
|
|
* power decisions. The main intended use case is for sidetone paths
|
|
* which couple audio between other independent paths if they are both
|
|
* active in order to make the combination work better at the user
|
|
* level but which aren't intended to be "used".
|
|
*
|
|
* Note that CODEC drivers should not use this as sidetone type paths
|
|
* can frequently also be used as bypass paths.
|
|
*/
|
|
int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
|
|
const struct snd_soc_dapm_route *route, int num)
|
|
{
|
|
int i;
|
|
int ret = 0;
|
|
|
|
snd_soc_dapm_mutex_lock_root(dapm);
|
|
for (i = 0; i < num; i++) {
|
|
int err = snd_soc_dapm_weak_route(dapm, route);
|
|
if (err)
|
|
ret = err;
|
|
route++;
|
|
}
|
|
snd_soc_dapm_mutex_unlock(dapm);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
|
|
|
|
/**
|
|
* snd_soc_dapm_new_widgets - add new dapm widgets
|
|
* @card: card to be checked for new dapm widgets
|
|
*
|
|
* 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_card *card)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
unsigned int val;
|
|
|
|
snd_soc_dapm_mutex_lock_root(card);
|
|
|
|
for_each_card_widgets(card, w)
|
|
{
|
|
if (w->new)
|
|
continue;
|
|
|
|
if (w->num_kcontrols) {
|
|
w->kcontrols = kcalloc(w->num_kcontrols,
|
|
sizeof(struct snd_kcontrol *),
|
|
GFP_KERNEL);
|
|
if (!w->kcontrols) {
|
|
snd_soc_dapm_mutex_unlock(card);
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
|
|
switch(w->id) {
|
|
case snd_soc_dapm_switch:
|
|
case snd_soc_dapm_mixer:
|
|
case snd_soc_dapm_mixer_named_ctl:
|
|
dapm_new_mixer(w);
|
|
break;
|
|
case snd_soc_dapm_mux:
|
|
case snd_soc_dapm_demux:
|
|
dapm_new_mux(w);
|
|
break;
|
|
case snd_soc_dapm_pga:
|
|
case snd_soc_dapm_effect:
|
|
case snd_soc_dapm_out_drv:
|
|
dapm_new_pga(w);
|
|
break;
|
|
case snd_soc_dapm_dai_link:
|
|
dapm_new_dai_link(w);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* Read the initial power state from the device */
|
|
if (w->reg >= 0) {
|
|
val = soc_dapm_read(w->dapm, w->reg);
|
|
val = val >> w->shift;
|
|
val &= w->mask;
|
|
if (val == w->on_val)
|
|
w->power = 1;
|
|
}
|
|
|
|
w->new = 1;
|
|
|
|
dapm_mark_dirty(w, "new widget");
|
|
dapm_debugfs_add_widget(w);
|
|
}
|
|
|
|
dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
|
|
snd_soc_dapm_mutex_unlock(card);
|
|
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_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->private_value;
|
|
int reg = mc->reg;
|
|
unsigned int shift = mc->shift;
|
|
int max = mc->max;
|
|
unsigned int width = fls(max);
|
|
unsigned int mask = (1 << fls(max)) - 1;
|
|
unsigned int invert = mc->invert;
|
|
unsigned int reg_val, val, rval = 0;
|
|
|
|
snd_soc_dapm_mutex_lock(dapm);
|
|
if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) {
|
|
reg_val = soc_dapm_read(dapm, reg);
|
|
val = (reg_val >> shift) & mask;
|
|
|
|
if (reg != mc->rreg)
|
|
reg_val = soc_dapm_read(dapm, mc->rreg);
|
|
|
|
if (snd_soc_volsw_is_stereo(mc))
|
|
rval = (reg_val >> mc->rshift) & mask;
|
|
} else {
|
|
reg_val = dapm_kcontrol_get_value(kcontrol);
|
|
val = reg_val & mask;
|
|
|
|
if (snd_soc_volsw_is_stereo(mc))
|
|
rval = (reg_val >> width) & mask;
|
|
}
|
|
snd_soc_dapm_mutex_unlock(dapm);
|
|
|
|
if (invert)
|
|
ucontrol->value.integer.value[0] = max - val;
|
|
else
|
|
ucontrol->value.integer.value[0] = val;
|
|
|
|
if (snd_soc_volsw_is_stereo(mc)) {
|
|
if (invert)
|
|
ucontrol->value.integer.value[1] = max - rval;
|
|
else
|
|
ucontrol->value.integer.value[1] = rval;
|
|
}
|
|
|
|
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_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
|
|
struct snd_soc_card *card = dapm->card;
|
|
struct soc_mixer_control *mc =
|
|
(struct soc_mixer_control *)kcontrol->private_value;
|
|
int reg = mc->reg;
|
|
unsigned int shift = mc->shift;
|
|
int max = mc->max;
|
|
unsigned int width = fls(max);
|
|
unsigned int mask = (1 << width) - 1;
|
|
unsigned int invert = mc->invert;
|
|
unsigned int val, rval = 0;
|
|
int connect, rconnect = -1, change, reg_change = 0;
|
|
struct snd_soc_dapm_update update = {};
|
|
int ret = 0;
|
|
|
|
val = (ucontrol->value.integer.value[0] & mask);
|
|
connect = !!val;
|
|
|
|
if (invert)
|
|
val = max - val;
|
|
|
|
if (snd_soc_volsw_is_stereo(mc)) {
|
|
rval = (ucontrol->value.integer.value[1] & mask);
|
|
rconnect = !!rval;
|
|
if (invert)
|
|
rval = max - rval;
|
|
}
|
|
|
|
snd_soc_dapm_mutex_lock(card);
|
|
|
|
/* This assumes field width < (bits in unsigned int / 2) */
|
|
if (width > sizeof(unsigned int) * 8 / 2)
|
|
dev_warn(dapm->dev,
|
|
"ASoC: control %s field width limit exceeded\n",
|
|
kcontrol->id.name);
|
|
change = dapm_kcontrol_set_value(kcontrol, val | (rval << width));
|
|
|
|
if (reg != SND_SOC_NOPM) {
|
|
val = val << shift;
|
|
rval = rval << mc->rshift;
|
|
|
|
reg_change = soc_dapm_test_bits(dapm, reg, mask << shift, val);
|
|
|
|
if (snd_soc_volsw_is_stereo(mc))
|
|
reg_change |= soc_dapm_test_bits(dapm, mc->rreg,
|
|
mask << mc->rshift,
|
|
rval);
|
|
}
|
|
|
|
if (change || reg_change) {
|
|
if (reg_change) {
|
|
if (snd_soc_volsw_is_stereo(mc)) {
|
|
update.has_second_set = true;
|
|
update.reg2 = mc->rreg;
|
|
update.mask2 = mask << mc->rshift;
|
|
update.val2 = rval;
|
|
}
|
|
update.kcontrol = kcontrol;
|
|
update.reg = reg;
|
|
update.mask = mask << shift;
|
|
update.val = val;
|
|
card->update = &update;
|
|
}
|
|
|
|
ret = soc_dapm_mixer_update_power(card, kcontrol, connect,
|
|
rconnect);
|
|
|
|
card->update = NULL;
|
|
}
|
|
|
|
snd_soc_dapm_mutex_unlock(card);
|
|
|
|
if (ret > 0)
|
|
snd_soc_dpcm_runtime_update(card);
|
|
|
|
return change;
|
|
}
|
|
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_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
|
|
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
|
|
unsigned int reg_val, val;
|
|
|
|
snd_soc_dapm_mutex_lock(dapm);
|
|
if (e->reg != SND_SOC_NOPM && dapm_kcontrol_is_powered(kcontrol)) {
|
|
reg_val = soc_dapm_read(dapm, e->reg);
|
|
} else {
|
|
reg_val = dapm_kcontrol_get_value(kcontrol);
|
|
}
|
|
snd_soc_dapm_mutex_unlock(dapm);
|
|
|
|
val = (reg_val >> e->shift_l) & e->mask;
|
|
ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
|
|
if (e->shift_l != e->shift_r) {
|
|
val = (reg_val >> e->shift_r) & e->mask;
|
|
val = snd_soc_enum_val_to_item(e, val);
|
|
ucontrol->value.enumerated.item[1] = val;
|
|
}
|
|
|
|
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_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
|
|
struct snd_soc_card *card = dapm->card;
|
|
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
|
|
unsigned int *item = ucontrol->value.enumerated.item;
|
|
unsigned int val, change, reg_change = 0;
|
|
unsigned int mask;
|
|
struct snd_soc_dapm_update update = {};
|
|
int ret = 0;
|
|
|
|
if (item[0] >= e->items)
|
|
return -EINVAL;
|
|
|
|
val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
|
|
mask = e->mask << e->shift_l;
|
|
if (e->shift_l != e->shift_r) {
|
|
if (item[1] > e->items)
|
|
return -EINVAL;
|
|
val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
|
|
mask |= e->mask << e->shift_r;
|
|
}
|
|
|
|
snd_soc_dapm_mutex_lock(card);
|
|
|
|
change = dapm_kcontrol_set_value(kcontrol, val);
|
|
|
|
if (e->reg != SND_SOC_NOPM)
|
|
reg_change = soc_dapm_test_bits(dapm, e->reg, mask, val);
|
|
|
|
if (change || reg_change) {
|
|
if (reg_change) {
|
|
update.kcontrol = kcontrol;
|
|
update.reg = e->reg;
|
|
update.mask = mask;
|
|
update.val = val;
|
|
card->update = &update;
|
|
}
|
|
|
|
ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
|
|
|
|
card->update = NULL;
|
|
}
|
|
|
|
snd_soc_dapm_mutex_unlock(card);
|
|
|
|
if (ret > 0)
|
|
snd_soc_dpcm_runtime_update(card);
|
|
|
|
return change;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_put_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_card *card = snd_kcontrol_chip(kcontrol);
|
|
const char *pin = (const char *)kcontrol->private_value;
|
|
|
|
snd_soc_dapm_mutex_lock(card);
|
|
|
|
ucontrol->value.integer.value[0] =
|
|
snd_soc_dapm_get_pin_status(&card->dapm, pin);
|
|
|
|
snd_soc_dapm_mutex_unlock(card);
|
|
|
|
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_card *card = snd_kcontrol_chip(kcontrol);
|
|
const char *pin = (const char *)kcontrol->private_value;
|
|
int ret;
|
|
|
|
snd_soc_dapm_mutex_lock(card);
|
|
ret = __snd_soc_dapm_set_pin(&card->dapm, pin,
|
|
!!ucontrol->value.integer.value[0]);
|
|
snd_soc_dapm_mutex_unlock(card);
|
|
|
|
snd_soc_dapm_sync(&card->dapm);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
|
|
|
|
struct snd_soc_dapm_widget *
|
|
snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
|
|
const struct snd_soc_dapm_widget *widget)
|
|
{
|
|
enum snd_soc_dapm_direction dir;
|
|
struct snd_soc_dapm_widget *w;
|
|
const char *prefix;
|
|
int ret = -ENOMEM;
|
|
|
|
if ((w = dapm_cnew_widget(widget)) == NULL)
|
|
goto cnew_failed;
|
|
|
|
prefix = soc_dapm_prefix(dapm);
|
|
if (prefix)
|
|
w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
|
|
else
|
|
w->name = kstrdup_const(widget->name, GFP_KERNEL);
|
|
if (!w->name)
|
|
goto name_failed;
|
|
|
|
switch (w->id) {
|
|
case snd_soc_dapm_regulator_supply:
|
|
w->regulator = devm_regulator_get(dapm->dev, widget->name);
|
|
if (IS_ERR(w->regulator)) {
|
|
ret = PTR_ERR(w->regulator);
|
|
goto request_failed;
|
|
}
|
|
|
|
if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
|
|
ret = regulator_allow_bypass(w->regulator, true);
|
|
if (ret != 0)
|
|
dev_warn(dapm->dev,
|
|
"ASoC: Failed to bypass %s: %d\n",
|
|
w->name, ret);
|
|
}
|
|
break;
|
|
case snd_soc_dapm_pinctrl:
|
|
w->pinctrl = devm_pinctrl_get(dapm->dev);
|
|
if (IS_ERR(w->pinctrl)) {
|
|
ret = PTR_ERR(w->pinctrl);
|
|
goto request_failed;
|
|
}
|
|
|
|
/* set to sleep_state when initializing */
|
|
dapm_pinctrl_event(w, NULL, SND_SOC_DAPM_POST_PMD);
|
|
break;
|
|
case snd_soc_dapm_clock_supply:
|
|
w->clk = devm_clk_get(dapm->dev, w->name);
|
|
if (IS_ERR(w->clk)) {
|
|
ret = PTR_ERR(w->clk);
|
|
goto request_failed;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
switch (w->id) {
|
|
case snd_soc_dapm_mic:
|
|
w->is_ep = SND_SOC_DAPM_EP_SOURCE;
|
|
w->power_check = dapm_generic_check_power;
|
|
break;
|
|
case snd_soc_dapm_input:
|
|
if (!dapm->card->fully_routed)
|
|
w->is_ep = SND_SOC_DAPM_EP_SOURCE;
|
|
w->power_check = dapm_generic_check_power;
|
|
break;
|
|
case snd_soc_dapm_spk:
|
|
case snd_soc_dapm_hp:
|
|
w->is_ep = SND_SOC_DAPM_EP_SINK;
|
|
w->power_check = dapm_generic_check_power;
|
|
break;
|
|
case snd_soc_dapm_output:
|
|
if (!dapm->card->fully_routed)
|
|
w->is_ep = SND_SOC_DAPM_EP_SINK;
|
|
w->power_check = dapm_generic_check_power;
|
|
break;
|
|
case snd_soc_dapm_vmid:
|
|
case snd_soc_dapm_siggen:
|
|
w->is_ep = SND_SOC_DAPM_EP_SOURCE;
|
|
w->power_check = dapm_always_on_check_power;
|
|
break;
|
|
case snd_soc_dapm_sink:
|
|
w->is_ep = SND_SOC_DAPM_EP_SINK;
|
|
w->power_check = dapm_always_on_check_power;
|
|
break;
|
|
|
|
case snd_soc_dapm_mux:
|
|
case snd_soc_dapm_demux:
|
|
case snd_soc_dapm_switch:
|
|
case snd_soc_dapm_mixer:
|
|
case snd_soc_dapm_mixer_named_ctl:
|
|
case snd_soc_dapm_adc:
|
|
case snd_soc_dapm_aif_out:
|
|
case snd_soc_dapm_dac:
|
|
case snd_soc_dapm_aif_in:
|
|
case snd_soc_dapm_pga:
|
|
case snd_soc_dapm_buffer:
|
|
case snd_soc_dapm_scheduler:
|
|
case snd_soc_dapm_effect:
|
|
case snd_soc_dapm_src:
|
|
case snd_soc_dapm_asrc:
|
|
case snd_soc_dapm_encoder:
|
|
case snd_soc_dapm_decoder:
|
|
case snd_soc_dapm_out_drv:
|
|
case snd_soc_dapm_micbias:
|
|
case snd_soc_dapm_line:
|
|
case snd_soc_dapm_dai_link:
|
|
case snd_soc_dapm_dai_out:
|
|
case snd_soc_dapm_dai_in:
|
|
w->power_check = dapm_generic_check_power;
|
|
break;
|
|
case snd_soc_dapm_supply:
|
|
case snd_soc_dapm_regulator_supply:
|
|
case snd_soc_dapm_pinctrl:
|
|
case snd_soc_dapm_clock_supply:
|
|
case snd_soc_dapm_kcontrol:
|
|
w->is_supply = 1;
|
|
w->power_check = dapm_supply_check_power;
|
|
break;
|
|
default:
|
|
w->power_check = dapm_always_on_check_power;
|
|
break;
|
|
}
|
|
|
|
w->dapm = dapm;
|
|
INIT_LIST_HEAD(&w->list);
|
|
INIT_LIST_HEAD(&w->dirty);
|
|
/* see for_each_card_widgets */
|
|
list_add_tail(&w->list, &dapm->card->widgets);
|
|
|
|
snd_soc_dapm_for_each_direction(dir) {
|
|
INIT_LIST_HEAD(&w->edges[dir]);
|
|
w->endpoints[dir] = -1;
|
|
}
|
|
|
|
/* machine layer sets up unconnected pins and insertions */
|
|
w->connected = 1;
|
|
return w;
|
|
|
|
request_failed:
|
|
dev_err_probe(dapm->dev, ret, "ASoC: Failed to request %s\n",
|
|
w->name);
|
|
kfree_const(w->name);
|
|
name_failed:
|
|
kfree_const(w->sname);
|
|
kfree(w);
|
|
cnew_failed:
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_new_control - create new dapm control
|
|
* @dapm: DAPM context
|
|
* @widget: widget template
|
|
*
|
|
* Creates new DAPM control based upon a template.
|
|
*
|
|
* Returns a widget pointer on success or an error pointer on failure
|
|
*/
|
|
struct snd_soc_dapm_widget *
|
|
snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
|
|
const struct snd_soc_dapm_widget *widget)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
snd_soc_dapm_mutex_lock(dapm);
|
|
w = snd_soc_dapm_new_control_unlocked(dapm, widget);
|
|
snd_soc_dapm_mutex_unlock(dapm);
|
|
|
|
return w;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
|
|
|
|
/**
|
|
* snd_soc_dapm_new_controls - create new dapm controls
|
|
* @dapm: DAPM context
|
|
* @widget: widget array
|
|
* @num: number of widgets
|
|
*
|
|
* Creates new DAPM controls based upon the templates.
|
|
*
|
|
* Returns 0 for success else error.
|
|
*/
|
|
int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
|
|
const struct snd_soc_dapm_widget *widget,
|
|
int num)
|
|
{
|
|
int i;
|
|
int ret = 0;
|
|
|
|
snd_soc_dapm_mutex_lock_root(dapm);
|
|
for (i = 0; i < num; i++) {
|
|
struct snd_soc_dapm_widget *w = snd_soc_dapm_new_control_unlocked(dapm, widget);
|
|
if (IS_ERR(w)) {
|
|
ret = PTR_ERR(w);
|
|
break;
|
|
}
|
|
widget++;
|
|
}
|
|
snd_soc_dapm_mutex_unlock(dapm);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
|
|
|
|
static int
|
|
snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget *w,
|
|
struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
struct snd_soc_dai *source, *sink;
|
|
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
|
|
struct snd_pcm_hw_params *params = NULL;
|
|
const struct snd_soc_pcm_stream *config = NULL;
|
|
struct snd_pcm_runtime *runtime = NULL;
|
|
unsigned int fmt;
|
|
int ret = 0;
|
|
|
|
/*
|
|
* NOTE
|
|
*
|
|
* snd_pcm_hw_params is quite large (608 bytes on arm64) and is
|
|
* starting to get a bit excessive for allocation on the stack,
|
|
* especially when you're building with some of the KASAN type
|
|
* stuff that increases stack usage.
|
|
* So, we use kzalloc()/kfree() for params in this function.
|
|
*/
|
|
params = kzalloc(sizeof(*params), GFP_KERNEL);
|
|
if (!params)
|
|
return -ENOMEM;
|
|
|
|
runtime = kzalloc(sizeof(*runtime), GFP_KERNEL);
|
|
if (!runtime) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
substream->runtime = runtime;
|
|
|
|
substream->stream = SNDRV_PCM_STREAM_CAPTURE;
|
|
snd_soc_dapm_widget_for_each_source_path(w, path) {
|
|
source = path->source->priv;
|
|
|
|
ret = snd_soc_dai_startup(source, substream);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
snd_soc_dai_activate(source, substream->stream);
|
|
}
|
|
|
|
substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
|
|
snd_soc_dapm_widget_for_each_sink_path(w, path) {
|
|
sink = path->sink->priv;
|
|
|
|
ret = snd_soc_dai_startup(sink, substream);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
snd_soc_dai_activate(sink, substream->stream);
|
|
}
|
|
|
|
substream->hw_opened = 1;
|
|
|
|
/*
|
|
* Note: getting the config after .startup() gives a chance to
|
|
* either party on the link to alter the configuration if
|
|
* necessary
|
|
*/
|
|
config = rtd->dai_link->c2c_params + rtd->c2c_params_select;
|
|
if (!config) {
|
|
dev_err(w->dapm->dev, "ASoC: link config missing\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
/* Be a little careful as we don't want to overflow the mask array */
|
|
if (!config->formats) {
|
|
dev_warn(w->dapm->dev, "ASoC: Invalid format was specified\n");
|
|
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
fmt = ffs(config->formats) - 1;
|
|
|
|
snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
|
|
hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
|
|
config->rate_min;
|
|
hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
|
|
config->rate_max;
|
|
hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
|
|
= config->channels_min;
|
|
hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
|
|
= config->channels_max;
|
|
|
|
substream->stream = SNDRV_PCM_STREAM_CAPTURE;
|
|
snd_soc_dapm_widget_for_each_source_path(w, path) {
|
|
source = path->source->priv;
|
|
|
|
ret = snd_soc_dai_hw_params(source, substream, params);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
dapm_update_dai_unlocked(substream, params, source);
|
|
}
|
|
|
|
substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
|
|
snd_soc_dapm_widget_for_each_sink_path(w, path) {
|
|
sink = path->sink->priv;
|
|
|
|
ret = snd_soc_dai_hw_params(sink, substream, params);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
dapm_update_dai_unlocked(substream, params, sink);
|
|
}
|
|
|
|
runtime->format = params_format(params);
|
|
runtime->subformat = params_subformat(params);
|
|
runtime->channels = params_channels(params);
|
|
runtime->rate = params_rate(params);
|
|
|
|
out:
|
|
/* see above NOTE */
|
|
kfree(params);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
|
|
struct snd_kcontrol *kcontrol, int event)
|
|
{
|
|
struct snd_soc_dapm_path *path;
|
|
struct snd_soc_dai *source, *sink;
|
|
struct snd_pcm_substream *substream = w->priv;
|
|
int ret = 0, saved_stream = substream->stream;
|
|
|
|
if (WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) ||
|
|
list_empty(&w->edges[SND_SOC_DAPM_DIR_IN])))
|
|
return -EINVAL;
|
|
|
|
switch (event) {
|
|
case SND_SOC_DAPM_PRE_PMU:
|
|
ret = snd_soc_dai_link_event_pre_pmu(w, substream);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
break;
|
|
|
|
case SND_SOC_DAPM_POST_PMU:
|
|
snd_soc_dapm_widget_for_each_sink_path(w, path) {
|
|
sink = path->sink->priv;
|
|
|
|
snd_soc_dai_digital_mute(sink, 0, SNDRV_PCM_STREAM_PLAYBACK);
|
|
ret = 0;
|
|
}
|
|
break;
|
|
|
|
case SND_SOC_DAPM_PRE_PMD:
|
|
snd_soc_dapm_widget_for_each_sink_path(w, path) {
|
|
sink = path->sink->priv;
|
|
|
|
snd_soc_dai_digital_mute(sink, 1, SNDRV_PCM_STREAM_PLAYBACK);
|
|
ret = 0;
|
|
}
|
|
|
|
substream->stream = SNDRV_PCM_STREAM_CAPTURE;
|
|
snd_soc_dapm_widget_for_each_source_path(w, path) {
|
|
source = path->source->priv;
|
|
snd_soc_dai_hw_free(source, substream, 0);
|
|
}
|
|
|
|
substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
|
|
snd_soc_dapm_widget_for_each_sink_path(w, path) {
|
|
sink = path->sink->priv;
|
|
snd_soc_dai_hw_free(sink, substream, 0);
|
|
}
|
|
|
|
substream->stream = SNDRV_PCM_STREAM_CAPTURE;
|
|
snd_soc_dapm_widget_for_each_source_path(w, path) {
|
|
source = path->source->priv;
|
|
snd_soc_dai_deactivate(source, substream->stream);
|
|
snd_soc_dai_shutdown(source, substream, 0);
|
|
}
|
|
|
|
substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
|
|
snd_soc_dapm_widget_for_each_sink_path(w, path) {
|
|
sink = path->sink->priv;
|
|
snd_soc_dai_deactivate(sink, substream->stream);
|
|
snd_soc_dai_shutdown(sink, substream, 0);
|
|
}
|
|
break;
|
|
|
|
case SND_SOC_DAPM_POST_PMD:
|
|
kfree(substream->runtime);
|
|
break;
|
|
|
|
default:
|
|
WARN(1, "Unknown event %d\n", event);
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
out:
|
|
/* Restore the substream direction */
|
|
substream->stream = saved_stream;
|
|
return ret;
|
|
}
|
|
|
|
static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
|
|
struct snd_soc_pcm_runtime *rtd = w->priv;
|
|
|
|
ucontrol->value.enumerated.item[0] = rtd->c2c_params_select;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
|
|
struct snd_soc_pcm_runtime *rtd = w->priv;
|
|
|
|
/* Can't change the config when widget is already powered */
|
|
if (w->power)
|
|
return -EBUSY;
|
|
|
|
if (ucontrol->value.enumerated.item[0] == rtd->c2c_params_select)
|
|
return 0;
|
|
|
|
if (ucontrol->value.enumerated.item[0] >= rtd->dai_link->num_c2c_params)
|
|
return -EINVAL;
|
|
|
|
rtd->c2c_params_select = ucontrol->value.enumerated.item[0];
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
snd_soc_dapm_free_kcontrol(struct snd_soc_card *card,
|
|
unsigned long *private_value,
|
|
int num_c2c_params,
|
|
const char **w_param_text)
|
|
{
|
|
int count;
|
|
|
|
devm_kfree(card->dev, (void *)*private_value);
|
|
|
|
if (!w_param_text)
|
|
return;
|
|
|
|
for (count = 0 ; count < num_c2c_params; count++)
|
|
devm_kfree(card->dev, (void *)w_param_text[count]);
|
|
devm_kfree(card->dev, w_param_text);
|
|
}
|
|
|
|
static struct snd_kcontrol_new *
|
|
snd_soc_dapm_alloc_kcontrol(struct snd_soc_card *card,
|
|
char *link_name,
|
|
const struct snd_soc_pcm_stream *c2c_params,
|
|
int num_c2c_params, const char **w_param_text,
|
|
unsigned long *private_value)
|
|
{
|
|
struct soc_enum w_param_enum[] = {
|
|
SOC_ENUM_SINGLE(0, 0, 0, NULL),
|
|
};
|
|
struct snd_kcontrol_new kcontrol_dai_link[] = {
|
|
SOC_ENUM_EXT(NULL, w_param_enum[0],
|
|
snd_soc_dapm_dai_link_get,
|
|
snd_soc_dapm_dai_link_put),
|
|
};
|
|
struct snd_kcontrol_new *kcontrol_news;
|
|
const struct snd_soc_pcm_stream *config = c2c_params;
|
|
int count;
|
|
|
|
for (count = 0 ; count < num_c2c_params; count++) {
|
|
if (!config->stream_name) {
|
|
dev_warn(card->dapm.dev,
|
|
"ASoC: anonymous config %d for dai link %s\n",
|
|
count, link_name);
|
|
w_param_text[count] =
|
|
devm_kasprintf(card->dev, GFP_KERNEL,
|
|
"Anonymous Configuration %d",
|
|
count);
|
|
} else {
|
|
w_param_text[count] = devm_kmemdup(card->dev,
|
|
config->stream_name,
|
|
strlen(config->stream_name) + 1,
|
|
GFP_KERNEL);
|
|
}
|
|
if (!w_param_text[count])
|
|
goto outfree_w_param;
|
|
config++;
|
|
}
|
|
|
|
w_param_enum[0].items = num_c2c_params;
|
|
w_param_enum[0].texts = w_param_text;
|
|
|
|
*private_value =
|
|
(unsigned long) devm_kmemdup(card->dev,
|
|
(void *)(kcontrol_dai_link[0].private_value),
|
|
sizeof(struct soc_enum), GFP_KERNEL);
|
|
if (!*private_value) {
|
|
dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
|
|
link_name);
|
|
goto outfree_w_param;
|
|
}
|
|
kcontrol_dai_link[0].private_value = *private_value;
|
|
/* duplicate kcontrol_dai_link on heap so that memory persists */
|
|
kcontrol_news = devm_kmemdup(card->dev, &kcontrol_dai_link[0],
|
|
sizeof(struct snd_kcontrol_new),
|
|
GFP_KERNEL);
|
|
if (!kcontrol_news) {
|
|
dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
|
|
link_name);
|
|
goto outfree_w_param;
|
|
}
|
|
return kcontrol_news;
|
|
|
|
outfree_w_param:
|
|
snd_soc_dapm_free_kcontrol(card, private_value, num_c2c_params, w_param_text);
|
|
return NULL;
|
|
}
|
|
|
|
static struct snd_soc_dapm_widget *
|
|
snd_soc_dapm_new_dai(struct snd_soc_card *card,
|
|
struct snd_pcm_substream *substream,
|
|
char *id)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
|
|
struct snd_soc_dapm_widget template;
|
|
struct snd_soc_dapm_widget *w;
|
|
const struct snd_kcontrol_new *kcontrol_news;
|
|
int num_kcontrols;
|
|
const char **w_param_text;
|
|
unsigned long private_value = 0;
|
|
char *link_name;
|
|
int ret = -ENOMEM;
|
|
|
|
link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s",
|
|
rtd->dai_link->name, id);
|
|
if (!link_name)
|
|
goto name_fail;
|
|
|
|
/* allocate memory for control, only in case of multiple configs */
|
|
w_param_text = NULL;
|
|
kcontrol_news = NULL;
|
|
num_kcontrols = 0;
|
|
if (rtd->dai_link->num_c2c_params > 1) {
|
|
w_param_text = devm_kcalloc(card->dev,
|
|
rtd->dai_link->num_c2c_params,
|
|
sizeof(char *), GFP_KERNEL);
|
|
if (!w_param_text)
|
|
goto param_fail;
|
|
|
|
num_kcontrols = 1;
|
|
kcontrol_news = snd_soc_dapm_alloc_kcontrol(card, link_name,
|
|
rtd->dai_link->c2c_params,
|
|
rtd->dai_link->num_c2c_params,
|
|
w_param_text, &private_value);
|
|
if (!kcontrol_news)
|
|
goto param_fail;
|
|
}
|
|
|
|
memset(&template, 0, sizeof(template));
|
|
template.reg = SND_SOC_NOPM;
|
|
template.id = snd_soc_dapm_dai_link;
|
|
template.name = link_name;
|
|
template.event = snd_soc_dai_link_event;
|
|
template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
|
|
SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD;
|
|
template.kcontrol_news = kcontrol_news;
|
|
template.num_kcontrols = num_kcontrols;
|
|
|
|
dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
|
|
|
|
w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template);
|
|
if (IS_ERR(w)) {
|
|
ret = PTR_ERR(w);
|
|
goto outfree_kcontrol_news;
|
|
}
|
|
|
|
w->priv = substream;
|
|
|
|
return w;
|
|
|
|
outfree_kcontrol_news:
|
|
devm_kfree(card->dev, (void *)template.kcontrol_news);
|
|
snd_soc_dapm_free_kcontrol(card, &private_value,
|
|
rtd->dai_link->num_c2c_params, w_param_text);
|
|
param_fail:
|
|
devm_kfree(card->dev, link_name);
|
|
name_fail:
|
|
dev_err(rtd->dev, "ASoC: Failed to create %s-%s widget: %d\n",
|
|
rtd->dai_link->name, id, ret);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_new_dai_widgets - Create new DAPM widgets
|
|
* @dapm: DAPM context
|
|
* @dai: parent DAI
|
|
*
|
|
* Returns 0 on success, error code otherwise.
|
|
*/
|
|
int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct snd_soc_dapm_widget template;
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
WARN_ON(dapm->dev != dai->dev);
|
|
|
|
memset(&template, 0, sizeof(template));
|
|
template.reg = SND_SOC_NOPM;
|
|
|
|
if (dai->driver->playback.stream_name) {
|
|
template.id = snd_soc_dapm_dai_in;
|
|
template.name = dai->driver->playback.stream_name;
|
|
template.sname = dai->driver->playback.stream_name;
|
|
|
|
dev_dbg(dai->dev, "ASoC: adding %s widget\n",
|
|
template.name);
|
|
|
|
w = snd_soc_dapm_new_control_unlocked(dapm, &template);
|
|
if (IS_ERR(w))
|
|
return PTR_ERR(w);
|
|
|
|
w->priv = dai;
|
|
snd_soc_dai_set_widget_playback(dai, w);
|
|
}
|
|
|
|
if (dai->driver->capture.stream_name) {
|
|
template.id = snd_soc_dapm_dai_out;
|
|
template.name = dai->driver->capture.stream_name;
|
|
template.sname = dai->driver->capture.stream_name;
|
|
|
|
dev_dbg(dai->dev, "ASoC: adding %s widget\n",
|
|
template.name);
|
|
|
|
w = snd_soc_dapm_new_control_unlocked(dapm, &template);
|
|
if (IS_ERR(w))
|
|
return PTR_ERR(w);
|
|
|
|
w->priv = dai;
|
|
snd_soc_dai_set_widget_capture(dai, w);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_new_dai_widgets);
|
|
|
|
int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_dapm_widget *dai_w, *w;
|
|
struct snd_soc_dapm_widget *src, *sink;
|
|
struct snd_soc_dai *dai;
|
|
|
|
/* For each DAI widget... */
|
|
for_each_card_widgets(card, dai_w) {
|
|
switch (dai_w->id) {
|
|
case snd_soc_dapm_dai_in:
|
|
case snd_soc_dapm_dai_out:
|
|
break;
|
|
default:
|
|
continue;
|
|
}
|
|
|
|
/* let users know there is no DAI to link */
|
|
if (!dai_w->priv) {
|
|
dev_dbg(card->dev, "dai widget %s has no DAI\n",
|
|
dai_w->name);
|
|
continue;
|
|
}
|
|
|
|
dai = dai_w->priv;
|
|
|
|
/* ...find all widgets with the same stream and link them */
|
|
for_each_card_widgets(card, w) {
|
|
if (w->dapm != dai_w->dapm)
|
|
continue;
|
|
|
|
switch (w->id) {
|
|
case snd_soc_dapm_dai_in:
|
|
case snd_soc_dapm_dai_out:
|
|
continue;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (!w->sname || !strstr(w->sname, dai_w->sname))
|
|
continue;
|
|
|
|
if (dai_w->id == snd_soc_dapm_dai_in) {
|
|
src = dai_w;
|
|
sink = w;
|
|
} else {
|
|
src = w;
|
|
sink = dai_w;
|
|
}
|
|
dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name);
|
|
snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dapm_connect_dai_routes(struct snd_soc_dapm_context *dapm,
|
|
struct snd_soc_dai *src_dai,
|
|
struct snd_soc_dapm_widget *src,
|
|
struct snd_soc_dapm_widget *dai,
|
|
struct snd_soc_dai *sink_dai,
|
|
struct snd_soc_dapm_widget *sink)
|
|
{
|
|
dev_dbg(dapm->dev, "connected DAI link %s:%s -> %s:%s\n",
|
|
src_dai->component->name, src->name,
|
|
sink_dai->component->name, sink->name);
|
|
|
|
if (dai) {
|
|
snd_soc_dapm_add_path(dapm, src, dai, NULL, NULL);
|
|
src = dai;
|
|
}
|
|
|
|
snd_soc_dapm_add_path(dapm, src, sink, NULL, NULL);
|
|
}
|
|
|
|
static int get_stream_cpu(struct snd_soc_dai_link *dai_link, int stream)
|
|
{
|
|
/*
|
|
* [Normal]
|
|
*
|
|
* Playback
|
|
* CPU : SNDRV_PCM_STREAM_PLAYBACK
|
|
* Codec: SNDRV_PCM_STREAM_PLAYBACK
|
|
*
|
|
* Playback
|
|
* CPU : SNDRV_PCM_STREAM_CAPTURE
|
|
* Codec: SNDRV_PCM_STREAM_CAPTURE
|
|
*/
|
|
if (!dai_link->c2c_params)
|
|
return stream;
|
|
|
|
/*
|
|
* [Codec2Codec]
|
|
*
|
|
* Playback
|
|
* CPU : SNDRV_PCM_STREAM_CAPTURE
|
|
* Codec: SNDRV_PCM_STREAM_PLAYBACK
|
|
*
|
|
* Capture
|
|
* CPU : SNDRV_PCM_STREAM_PLAYBACK
|
|
* Codec: SNDRV_PCM_STREAM_CAPTURE
|
|
*/
|
|
if (stream == SNDRV_PCM_STREAM_CAPTURE)
|
|
return SNDRV_PCM_STREAM_PLAYBACK;
|
|
|
|
return SNDRV_PCM_STREAM_CAPTURE;
|
|
}
|
|
|
|
static void dapm_connect_dai_pair(struct snd_soc_card *card,
|
|
struct snd_soc_pcm_runtime *rtd,
|
|
struct snd_soc_dai *codec_dai,
|
|
struct snd_soc_dai *cpu_dai)
|
|
{
|
|
struct snd_soc_dai_link *dai_link = rtd->dai_link;
|
|
struct snd_soc_dapm_widget *codec, *cpu;
|
|
struct snd_soc_dai *src_dai[] = { cpu_dai, codec_dai };
|
|
struct snd_soc_dai *sink_dai[] = { codec_dai, cpu_dai };
|
|
struct snd_soc_dapm_widget **src[] = { &cpu, &codec };
|
|
struct snd_soc_dapm_widget **sink[] = { &codec, &cpu };
|
|
char *widget_name[] = { "playback", "capture" };
|
|
int stream;
|
|
|
|
for_each_pcm_streams(stream) {
|
|
int stream_cpu, stream_codec;
|
|
|
|
stream_cpu = get_stream_cpu(dai_link, stream);
|
|
stream_codec = stream;
|
|
|
|
/* connect BE DAI playback if widgets are valid */
|
|
cpu = snd_soc_dai_get_widget(cpu_dai, stream_cpu);
|
|
codec = snd_soc_dai_get_widget(codec_dai, stream_codec);
|
|
|
|
if (!cpu || !codec)
|
|
continue;
|
|
|
|
/* special handling for [Codec2Codec] */
|
|
if (dai_link->c2c_params && !rtd->c2c_widget[stream]) {
|
|
struct snd_pcm_substream *substream = rtd->pcm->streams[stream].substream;
|
|
struct snd_soc_dapm_widget *dai = snd_soc_dapm_new_dai(card, substream,
|
|
widget_name[stream]);
|
|
|
|
if (IS_ERR(dai))
|
|
continue;
|
|
|
|
rtd->c2c_widget[stream] = dai;
|
|
}
|
|
|
|
dapm_connect_dai_routes(&card->dapm, src_dai[stream], *src[stream],
|
|
rtd->c2c_widget[stream],
|
|
sink_dai[stream], *sink[stream]);
|
|
}
|
|
}
|
|
|
|
static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
|
|
int event)
|
|
{
|
|
struct snd_soc_dapm_widget *w;
|
|
|
|
w = snd_soc_dai_get_widget(dai, stream);
|
|
|
|
if (w) {
|
|
unsigned int ep;
|
|
|
|
dapm_mark_dirty(w, "stream event");
|
|
|
|
if (w->id == snd_soc_dapm_dai_in) {
|
|
ep = SND_SOC_DAPM_EP_SOURCE;
|
|
dapm_widget_invalidate_input_paths(w);
|
|
} else {
|
|
ep = SND_SOC_DAPM_EP_SINK;
|
|
dapm_widget_invalidate_output_paths(w);
|
|
}
|
|
|
|
switch (event) {
|
|
case SND_SOC_DAPM_STREAM_START:
|
|
w->active = 1;
|
|
w->is_ep = ep;
|
|
break;
|
|
case SND_SOC_DAPM_STREAM_STOP:
|
|
w->active = 0;
|
|
w->is_ep = 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;
|
|
}
|
|
}
|
|
}
|
|
|
|
void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
struct snd_soc_dai *codec_dai;
|
|
int i;
|
|
|
|
/* for each BE DAI link... */
|
|
for_each_card_rtds(card, rtd) {
|
|
/*
|
|
* dynamic FE links have no fixed DAI mapping.
|
|
* CODEC<->CODEC links have no direct connection.
|
|
*/
|
|
if (rtd->dai_link->dynamic)
|
|
continue;
|
|
|
|
if (rtd->dai_link->num_cpus == 1) {
|
|
for_each_rtd_codec_dais(rtd, i, codec_dai)
|
|
dapm_connect_dai_pair(card, rtd, codec_dai,
|
|
asoc_rtd_to_cpu(rtd, 0));
|
|
} else if (rtd->dai_link->num_codecs == rtd->dai_link->num_cpus) {
|
|
for_each_rtd_codec_dais(rtd, i, codec_dai)
|
|
dapm_connect_dai_pair(card, rtd, codec_dai,
|
|
asoc_rtd_to_cpu(rtd, i));
|
|
} else {
|
|
dev_err(card->dev,
|
|
"N cpus to M codecs link is not supported yet\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
|
|
int event)
|
|
{
|
|
struct snd_soc_dai *dai;
|
|
int i;
|
|
|
|
for_each_rtd_dais(rtd, i, dai)
|
|
soc_dapm_dai_stream_event(dai, stream, event);
|
|
|
|
dapm_power_widgets(rtd->card, event);
|
|
}
|
|
|
|
/**
|
|
* snd_soc_dapm_stream_event - send a stream event to the dapm core
|
|
* @rtd: PCM runtime data
|
|
* @stream: stream name
|
|
* @event: stream event
|
|
*
|
|
* Sends a stream event to the dapm core. The core then makes any
|
|
* necessary widget power changes.
|
|
*
|
|
* Returns 0 for success else error.
|
|
*/
|
|
void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
|
|
int event)
|
|
{
|
|
struct snd_soc_card *card = rtd->card;
|
|
|
|
snd_soc_dapm_mutex_lock(card);
|
|
soc_dapm_stream_event(rtd, stream, event);
|
|
snd_soc_dapm_mutex_unlock(card);
|
|
}
|
|
|
|
void snd_soc_dapm_stream_stop(struct snd_soc_pcm_runtime *rtd, int stream)
|
|
{
|
|
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
|
if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
|
|
/* powered down playback stream now */
|
|
snd_soc_dapm_stream_event(rtd,
|
|
SNDRV_PCM_STREAM_PLAYBACK,
|
|
SND_SOC_DAPM_STREAM_STOP);
|
|
} else {
|
|
/* start delayed pop wq here for playback streams */
|
|
rtd->pop_wait = 1;
|
|
queue_delayed_work(system_power_efficient_wq,
|
|
&rtd->delayed_work,
|
|
msecs_to_jiffies(rtd->pmdown_time));
|
|
}
|
|
} else {
|
|
/* capture streams can be powered down now */
|
|
snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
|
|
SND_SOC_DAPM_STREAM_STOP);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_stop);
|
|
|
|
/**
|
|
* snd_soc_dapm_enable_pin_unlocked - enable pin.
|
|
* @dapm: DAPM context
|
|
* @pin: pin name
|
|
*
|
|
* Enables input/output pin and its parents or children widgets iff there is
|
|
* a valid audio route and active audio stream.
|
|
*
|
|
* Requires external locking.
|
|
*
|
|
* 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_unlocked(struct snd_soc_dapm_context *dapm,
|
|
const char *pin)
|
|
{
|
|
return snd_soc_dapm_set_pin(dapm, pin, 1);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
|
|
|
|
/**
|
|
* snd_soc_dapm_enable_pin - enable pin.
|
|
* @dapm: DAPM context
|
|
* @pin: pin name
|
|
*
|
|
* Enables input/output pin and its parents or children widgets iff there is
|
|
* a valid audio route and active audio stream.
|
|
*
|
|
* NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
|
|
* do any widget power switching.
|
|
*/
|
|
int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
|
|
{
|
|
int ret;
|
|
|
|
snd_soc_dapm_mutex_lock(dapm);
|
|
|
|
ret = snd_soc_dapm_set_pin(dapm, pin, 1);
|
|
|
|
snd_soc_dapm_mutex_unlock(dapm);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
|
|
|
|
/**
|
|
* snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
|
|
* @dapm: DAPM context
|
|
* @pin: pin name
|
|
*
|
|
* Enables input/output pin regardless of any other state. This is
|
|
* intended for use with microphone bias supplies used in microphone
|
|
* jack detection.
|
|
*
|
|
* Requires external locking.
|
|
*
|
|
* 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_unlocked(struct snd_soc_dapm_context *dapm,
|
|
const char *pin)
|
|
{
|
|
struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
|
|
|
|
if (!w) {
|
|
dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
|
|
return -EINVAL;
|
|
}
|
|
|
|
dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
|
|
if (!w->connected) {
|
|
/*
|
|
* w->force does not affect the number of input or output paths,
|
|
* so we only have to recheck if w->connected is changed
|
|
*/
|
|
dapm_widget_invalidate_input_paths(w);
|
|
dapm_widget_invalidate_output_paths(w);
|
|
w->connected = 1;
|
|
}
|
|
w->force = 1;
|
|
dapm_mark_dirty(w, "force enable");
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
|
|
|
|
/**
|
|
* snd_soc_dapm_force_enable_pin - force a pin to be enabled
|
|
* @dapm: DAPM context
|
|
* @pin: pin name
|
|
*
|
|
* Enables input/output pin regardless of any other state. This is
|
|
* intended for use with microphone bias supplies used in microphone
|
|
* jack detection.
|
|
*
|
|
* NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
|
|
* do any widget power switching.
|
|
*/
|
|
int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
|
|
const char *pin)
|
|
{
|
|
int ret;
|
|
|
|
snd_soc_dapm_mutex_lock(dapm);
|
|
|
|
ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
|
|
|
|
snd_soc_dapm_mutex_unlock(dapm);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
|
|
|
|
/**
|
|
* snd_soc_dapm_disable_pin_unlocked - disable pin.
|
|
* @dapm: DAPM context
|
|
* @pin: pin name
|
|
*
|
|
* Disables input/output pin and its parents or children widgets.
|
|
*
|
|
* Requires external locking.
|
|
*
|
|
* 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_unlocked(struct snd_soc_dapm_context *dapm,
|
|
const char *pin)
|
|
{
|
|
return snd_soc_dapm_set_pin(dapm, pin, 0);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
|
|
|
|
/**
|
|
* snd_soc_dapm_disable_pin - disable pin.
|
|
* @dapm: DAPM context
|
|
* @pin: pin name
|
|
*
|
|
* Disables input/output pin and its parents or children widgets.
|
|
*
|
|
* NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
|
|
* do any widget power switching.
|
|
*/
|
|
int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
|
|
const char *pin)
|
|
{
|
|
int ret;
|
|
|
|
snd_soc_dapm_mutex_lock(dapm);
|
|
|
|
ret = snd_soc_dapm_set_pin(dapm, pin, 0);
|
|
|
|
snd_soc_dapm_mutex_unlock(dapm);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
|
|
|
|
/**
|
|
* snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
|
|
* @dapm: DAPM context
|
|
* @pin: pin name
|
|
*
|
|
* Marks the specified pin as being not connected, disabling it along
|
|
* any parent or child widgets. At present this is identical to
|
|
* snd_soc_dapm_disable_pin() but in future it will be extended to do
|
|
* additional things such as disabling controls which only affect
|
|
* paths through the pin.
|
|
*
|
|
* Requires external locking.
|
|
*
|
|
* 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_unlocked(struct snd_soc_dapm_context *dapm,
|
|
const char *pin)
|
|
{
|
|
return snd_soc_dapm_set_pin(dapm, pin, 0);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
|
|
|
|
/**
|
|
* snd_soc_dapm_nc_pin - permanently disable pin.
|
|
* @dapm: DAPM context
|
|
* @pin: pin name
|
|
*
|
|
* Marks the specified pin as being not connected, disabling it along
|
|
* any parent or child widgets. At present this is identical to
|
|
* snd_soc_dapm_disable_pin() but in future it will be extended to do
|
|
* additional things such as disabling controls which only affect
|
|
* paths through the pin.
|
|
*
|
|
* NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
|
|
* do any widget power switching.
|
|
*/
|
|
int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
|
|
{
|
|
int ret;
|
|
|
|
snd_soc_dapm_mutex_lock(dapm);
|
|
|
|
ret = snd_soc_dapm_set_pin(dapm, pin, 0);
|
|
|
|
snd_soc_dapm_mutex_unlock(dapm);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
|
|
|
|
/**
|
|
* snd_soc_dapm_get_pin_status - get audio pin status
|
|
* @dapm: DAPM context
|
|
* @pin: audio signal pin endpoint (or start point)
|
|
*
|
|
* Get audio pin status - connected or disconnected.
|
|
*
|
|
* Returns 1 for connected otherwise 0.
|
|
*/
|
|
int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
|
|
const char *pin)
|
|
{
|
|
struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
|
|
|
|
if (w)
|
|
return w->connected;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
|
|
|
|
/**
|
|
* snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
|
|
* @dapm: DAPM context
|
|
* @pin: audio signal pin endpoint (or start point)
|
|
*
|
|
* Mark the given endpoint or pin as ignoring suspend. When the
|
|
* system is disabled a path between two endpoints flagged as ignoring
|
|
* suspend will not be disabled. The path must already be enabled via
|
|
* normal means at suspend time, it will not be turned on if it was not
|
|
* already enabled.
|
|
*/
|
|
int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
|
|
const char *pin)
|
|
{
|
|
struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
|
|
|
|
if (!w) {
|
|
dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
|
|
return -EINVAL;
|
|
}
|
|
|
|
w->ignore_suspend = 1;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
|
|
|
|
/**
|
|
* snd_soc_dapm_free - free dapm resources
|
|
* @dapm: DAPM context
|
|
*
|
|
* Free all dapm widgets and resources.
|
|
*/
|
|
void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
dapm_debugfs_cleanup(dapm);
|
|
dapm_free_widgets(dapm);
|
|
list_del(&dapm->list);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
|
|
|
|
void snd_soc_dapm_init(struct snd_soc_dapm_context *dapm,
|
|
struct snd_soc_card *card,
|
|
struct snd_soc_component *component)
|
|
{
|
|
dapm->card = card;
|
|
dapm->component = component;
|
|
dapm->bias_level = SND_SOC_BIAS_OFF;
|
|
|
|
if (component) {
|
|
dapm->dev = component->dev;
|
|
dapm->idle_bias_off = !component->driver->idle_bias_on;
|
|
dapm->suspend_bias_off = component->driver->suspend_bias_off;
|
|
} else {
|
|
dapm->dev = card->dev;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&dapm->list);
|
|
/* see for_each_card_dapms */
|
|
list_add(&dapm->list, &card->dapm_list);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_init);
|
|
|
|
static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
struct snd_soc_card *card = dapm->card;
|
|
struct snd_soc_dapm_widget *w;
|
|
LIST_HEAD(down_list);
|
|
int powerdown = 0;
|
|
|
|
snd_soc_dapm_mutex_lock_root(card);
|
|
|
|
for_each_card_widgets(dapm->card, w) {
|
|
if (w->dapm != dapm)
|
|
continue;
|
|
if (w->power) {
|
|
dapm_seq_insert(w, &down_list, false);
|
|
w->new_power = 0;
|
|
powerdown = 1;
|
|
}
|
|
}
|
|
|
|
/* If there were no widgets to power down we're already in
|
|
* standby.
|
|
*/
|
|
if (powerdown) {
|
|
if (dapm->bias_level == SND_SOC_BIAS_ON)
|
|
snd_soc_dapm_set_bias_level(dapm,
|
|
SND_SOC_BIAS_PREPARE);
|
|
dapm_seq_run(card, &down_list, 0, false);
|
|
if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
|
|
snd_soc_dapm_set_bias_level(dapm,
|
|
SND_SOC_BIAS_STANDBY);
|
|
}
|
|
|
|
snd_soc_dapm_mutex_unlock(card);
|
|
}
|
|
|
|
/*
|
|
* snd_soc_dapm_shutdown - callback for system shutdown
|
|
*/
|
|
void snd_soc_dapm_shutdown(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_dapm_context *dapm;
|
|
|
|
for_each_card_dapms(card, dapm) {
|
|
if (dapm != &card->dapm) {
|
|
soc_dapm_shutdown_dapm(dapm);
|
|
if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
|
|
snd_soc_dapm_set_bias_level(dapm,
|
|
SND_SOC_BIAS_OFF);
|
|
}
|
|
}
|
|
|
|
soc_dapm_shutdown_dapm(&card->dapm);
|
|
if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
|
|
snd_soc_dapm_set_bias_level(&card->dapm,
|
|
SND_SOC_BIAS_OFF);
|
|
}
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
|
|
MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
|
|
MODULE_LICENSE("GPL");
|