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4878 lines
123 KiB
4878 lines
123 KiB
// 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 <[email protected]> |
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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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|
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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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|
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#include <trace/events/asoc.h> |
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|
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#define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++; |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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static unsigned int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg); |
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|
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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_micbias] = 4, |
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[snd_soc_dapm_vmid] = 4, |
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[snd_soc_dapm_dai_link] = 3, |
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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_spk] = 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_kcontrol] = 13, |
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[snd_soc_dapm_post] = 14, |
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}; |
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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_hp] = 4, |
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[snd_soc_dapm_spk] = 4, |
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[snd_soc_dapm_line] = 4, |
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[snd_soc_dapm_out_drv] = 4, |
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[snd_soc_dapm_sink] = 4, |
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[snd_soc_dapm_pga] = 5, |
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[snd_soc_dapm_buffer] = 5, |
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[snd_soc_dapm_scheduler] = 5, |
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[snd_soc_dapm_effect] = 5, |
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[snd_soc_dapm_src] = 5, |
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[snd_soc_dapm_asrc] = 5, |
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[snd_soc_dapm_encoder] = 5, |
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[snd_soc_dapm_decoder] = 5, |
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[snd_soc_dapm_switch] = 6, |
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[snd_soc_dapm_mixer_named_ctl] = 6, |
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[snd_soc_dapm_mixer] = 6, |
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[snd_soc_dapm_dac] = 7, |
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[snd_soc_dapm_mic] = 8, |
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[snd_soc_dapm_siggen] = 8, |
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[snd_soc_dapm_input] = 8, |
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[snd_soc_dapm_output] = 8, |
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[snd_soc_dapm_micbias] = 9, |
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[snd_soc_dapm_vmid] = 9, |
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[snd_soc_dapm_mux] = 10, |
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[snd_soc_dapm_demux] = 10, |
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[snd_soc_dapm_aif_in] = 11, |
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[snd_soc_dapm_aif_out] = 11, |
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[snd_soc_dapm_dai_in] = 11, |
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[snd_soc_dapm_dai_out] = 11, |
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[snd_soc_dapm_dai_link] = 12, |
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[snd_soc_dapm_supply] = 13, |
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[snd_soc_dapm_clock_supply] = 14, |
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[snd_soc_dapm_pinctrl] = 14, |
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[snd_soc_dapm_regulator_supply] = 14, |
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[snd_soc_dapm_post] = 15, |
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}; |
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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 (dapm->card && dapm->card->instantiated) |
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lockdep_assert_held(&dapm->card->dapm_mutex); |
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} |
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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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|
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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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|
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if (!pop_time) |
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return; |
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|
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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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|
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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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|
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kfree(buf); |
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} |
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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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|
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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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|
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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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/* |
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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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|
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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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|
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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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/* |
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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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/* |
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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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/* |
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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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/* |
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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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|
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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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|
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mutex_lock(&card->dapm_mutex); |
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|
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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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|
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mutex_unlock(&card->dapm_mutex); |
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} |
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EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty); |
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|
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/* create a new dapm widget */ |
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static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
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const struct snd_soc_dapm_widget *_widget) |
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{ |
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struct snd_soc_dapm_widget *w; |
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|
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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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/* |
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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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|
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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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|
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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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|
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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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|
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if (mc->autodisable) { |
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struct snd_soc_dapm_widget template; |
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|
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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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|
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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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|
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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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|
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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: |
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e = (struct soc_enum *)kcontrol->private_value; |
|
|
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if (e->autodisable) { |
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struct snd_soc_dapm_widget template; |
|
|
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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 = e->reg; |
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template.mask = e->mask; |
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template.shift = e->shift_l; |
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template.off_val = snd_soc_enum_item_to_val(e, 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 = snd_soc_dapm_new_control_unlocked( |
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widget->dapm, &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); |
|
goto err_data; |
|
} |
|
|
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snd_soc_dapm_add_path(widget->dapm, data->widget, |
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widget, NULL, NULL); |
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} else if (e->reg != SND_SOC_NOPM) { |
|
data->value = soc_dapm_read(widget->dapm, e->reg) & |
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(e->mask << e->shift_l); |
|
} |
|
break; |
|
default: |
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break; |
|
} |
|
|
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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; |
|
} |
|
|
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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; |
|
|
|
lockdep_assert_held(&card->dapm_mutex); |
|
|
|
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_wcache *wcache, const char *name) |
|
{ |
|
struct snd_soc_dapm_widget *w = wcache->widget; |
|
|
|
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; |
|
} |
|
|
|
static inline void dapm_wcache_update(struct snd_soc_dapm_wcache *wcache, |
|
struct snd_soc_dapm_widget *w) |
|
{ |
|
wcache->widget = w; |
|
} |
|
|
|
/** |
|
* 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_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; |
|
LIST_HEAD(widgets); |
|
int paths; |
|
int ret; |
|
|
|
mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
|
|
if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
|
w = dai->playback_widget; |
|
invalidate_paths_ep(w, SND_SOC_DAPM_DIR_OUT); |
|
paths = is_connected_output_ep(w, &widgets, |
|
custom_stop_condition); |
|
} else { |
|
w = dai->capture_widget; |
|
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); |
|
mutex_unlock(&card->dapm_mutex); |
|
|
|
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_widget_set_power(struct snd_soc_dapm_widget *w, bool power, |
|
struct list_head *up_list, |
|
struct list_head *down_list) |
|
{ |
|
struct snd_soc_dapm_path *path; |
|
|
|
if (w->power == power) |
|
return; |
|
|
|
trace_snd_soc_dapm_widget_power(w, power); |
|
|
|
/* If we changed our power state perhaps our neigbours changed |
|
* also. |
|
*/ |
|
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); |
|
} |
|
|
|
if (power) |
|
dapm_seq_insert(w, up_list, true); |
|
else |
|
dapm_seq_insert(w, down_list, false); |
|
} |
|
|
|
static void dapm_power_one_widget(struct snd_soc_dapm_widget *w, |
|
struct list_head *up_list, |
|
struct list_head *down_list) |
|
{ |
|
int power; |
|
|
|
switch (w->id) { |
|
case snd_soc_dapm_pre: |
|
dapm_seq_insert(w, down_list, false); |
|
break; |
|
case snd_soc_dapm_post: |
|
dapm_seq_insert(w, up_list, true); |
|
break; |
|
|
|
default: |
|
power = dapm_widget_power_check(w); |
|
|
|
dapm_widget_set_power(w, power, up_list, down_list); |
|
break; |
|
} |
|
} |
|
|
|
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; |
|
|
|
lockdep_assert_held(&card->dapm_mutex); |
|
|
|
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; |
|
struct snd_soc_card *card = w->dapm->card; |
|
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; |
|
|
|
mutex_lock(&card->dapm_mutex); |
|
|
|
/* 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); |
|
} |
|
} |
|
|
|
mutex_unlock(&card->dapm_mutex); |
|
|
|
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; |
|
|
|
lockdep_assert_held(&card->dapm_mutex); |
|
|
|
/* 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; |
|
|
|
mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
card->update = update; |
|
ret = soc_dapm_mux_update_power(card, kcontrol, mux, e); |
|
card->update = NULL; |
|
mutex_unlock(&card->dapm_mutex); |
|
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; |
|
|
|
lockdep_assert_held(&card->dapm_mutex); |
|
|
|
/* 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; |
|
|
|
mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
card->update = update; |
|
ret = soc_dapm_mixer_update_power(card, kcontrol, connect, -1); |
|
card->update = NULL; |
|
mutex_unlock(&card->dapm_mutex); |
|
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) |
|
{ |
|
struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt); |
|
struct snd_soc_dapm_widget *w; |
|
int count = 0; |
|
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 += sprintf(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 += sprintf(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; |
|
|
|
mutex_lock(&rtd->card->dapm_mutex); |
|
|
|
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); |
|
} |
|
|
|
mutex_unlock(&rtd->card->dapm_mutex); |
|
|
|
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; |
|
|
|
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); |
|
|
|
void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context *dapm) |
|
{ |
|
dapm->path_sink_cache.widget = NULL; |
|
dapm->path_source_cache.widget = NULL; |
|
} |
|
|
|
/* 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); |
|
} |
|
snd_soc_dapm_reset_cache(dapm); |
|
} |
|
|
|
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 (!dapm->card || !dapm->card->instantiated) |
|
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; |
|
|
|
mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
ret = snd_soc_dapm_sync_unlocked(dapm); |
|
mutex_unlock(&dapm->card->dapm_mutex); |
|
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; |
|
|
|
mutex_lock_nested(&rtd->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
ret = dapm_update_dai_unlocked(substream, params, dai); |
|
mutex_unlock(&rtd->card->dapm_mutex); |
|
|
|
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)) |
|
{ |
|
struct snd_soc_dapm_widget *widgets[2]; |
|
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; |
|
widgets[SND_SOC_DAPM_DIR_IN] = wsource; |
|
widgets[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], &widgets[dir]->edges[dir]); |
|
|
|
snd_soc_dapm_for_each_direction(dir) { |
|
dapm_update_widget_flags(widgets[dir]); |
|
dapm_mark_dirty(widgets[dir], "Route added"); |
|
} |
|
|
|
if (dapm->card->instantiated && 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->path_source_cache, source); |
|
wsink = dapm_wcache_lookup(&dapm->path_sink_cache, 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; |
|
|
|
if (wsource == NULL) { |
|
dev_err(dapm->dev, "ASoC: no source widget found for %s\n", |
|
route->source); |
|
return -ENODEV; |
|
} |
|
if (wsink == NULL) { |
|
dev_err(dapm->dev, "ASoC: no sink widget found for %s\n", |
|
route->sink); |
|
return -ENODEV; |
|
} |
|
|
|
skip_search: |
|
dapm_wcache_update(&dapm->path_sink_cache, wsink); |
|
dapm_wcache_update(&dapm->path_source_cache, wsource); |
|
|
|
ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control, |
|
route->connected); |
|
if (ret) |
|
goto err; |
|
|
|
return 0; |
|
err: |
|
dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n", |
|
source, route->control, sink); |
|
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; |
|
|
|
mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
for (i = 0; i < num; i++) { |
|
int r = snd_soc_dapm_add_route(dapm, route); |
|
if (r < 0) { |
|
dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n", |
|
route->source, |
|
route->control ? route->control : "direct", |
|
route->sink); |
|
ret = r; |
|
} |
|
route++; |
|
} |
|
mutex_unlock(&dapm->card->dapm_mutex); |
|
|
|
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; |
|
|
|
mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
for (i = 0; i < num; i++) { |
|
snd_soc_dapm_del_route(dapm, route); |
|
route++; |
|
} |
|
mutex_unlock(&dapm->card->dapm_mutex); |
|
|
|
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; |
|
|
|
mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
|
for (i = 0; i < num; i++) { |
|
int err = snd_soc_dapm_weak_route(dapm, route); |
|
if (err) |
|
ret = err; |
|
route++; |
|
} |
|
mutex_unlock(&dapm->card->dapm_mutex); |
|
|
|
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; |
|
|
|
mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
|
|
|
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) { |
|
mutex_unlock(&card->dapm_mutex); |
|
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); |
|
mutex_unlock(&card->dapm_mutex); |
|
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 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 << fls(max)) - 1; |
|
unsigned int invert = mc->invert; |
|
unsigned int reg_val, val, rval = 0; |
|
|
|
mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
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; |
|
} |
|
mutex_unlock(&card->dapm_mutex); |
|
|
|
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; |
|
} |
|
|
|
mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
|
|
/* 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; |
|
} |
|
|
|
mutex_unlock(&card->dapm_mutex); |
|
|
|
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 snd_soc_card *card = dapm->card; |
|
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
|
unsigned int reg_val, val; |
|
|
|
mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
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); |
|
} |
|
mutex_unlock(&card->dapm_mutex); |
|
|
|
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; |
|
} |
|
|
|
mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
|
|
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; |
|
} |
|
|
|
mutex_unlock(&card->dapm_mutex); |
|
|
|
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; |
|
|
|
mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
|
|
ucontrol->value.integer.value[0] = |
|
snd_soc_dapm_get_pin_status(&card->dapm, pin); |
|
|
|
mutex_unlock(&card->dapm_mutex); |
|
|
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); |
|
|
|
/** |
|
* snd_soc_dapm_put_pin_switch - Set information for a pin switch |
|
* |
|
* @kcontrol: mixer control |
|
* @ucontrol: Value |
|
*/ |
|
int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, |
|
struct snd_ctl_elem_value *ucontrol) |
|
{ |
|
struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); |
|
const char *pin = (const char *)kcontrol->private_value; |
|
int ret; |
|
|
|
mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
ret = __snd_soc_dapm_set_pin(&card->dapm, pin, |
|
!!ucontrol->value.integer.value[0]); |
|
mutex_unlock(&card->dapm_mutex); |
|
|
|
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; |
|
|
|
if ((w = dapm_cnew_widget(widget)) == NULL) |
|
return ERR_PTR(-ENOMEM); |
|
|
|
switch (w->id) { |
|
case snd_soc_dapm_regulator_supply: |
|
w->regulator = devm_regulator_get(dapm->dev, w->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; |
|
} |
|
|
|
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 == NULL) { |
|
kfree_const(w->sname); |
|
kfree(w); |
|
return ERR_PTR(-ENOMEM); |
|
} |
|
|
|
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: |
|
if (ret != -EPROBE_DEFER) |
|
dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n", |
|
w->name, ret); |
|
|
|
kfree_const(w->sname); |
|
kfree(w); |
|
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; |
|
|
|
mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
w = snd_soc_dapm_new_control_unlocked(dapm, widget); |
|
mutex_unlock(&dapm->card->dapm_mutex); |
|
|
|
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; |
|
|
|
mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
|
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++; |
|
} |
|
mutex_unlock(&dapm->card->dapm_mutex); |
|
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; |
|
|
|
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->params + rtd->params_select; |
|
if (WARN_ON(!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) { |
|
fmt = ffs(config->formats) - 1; |
|
} else { |
|
dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n", |
|
config->formats); |
|
|
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
|
|
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: |
|
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->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->params_select) |
|
return 0; |
|
|
|
if (ucontrol->value.enumerated.item[0] >= rtd->dai_link->num_params) |
|
return -EINVAL; |
|
|
|
rtd->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_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_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 *params, |
|
int num_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 = params; |
|
int count; |
|
|
|
for (count = 0 ; count < num_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_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_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 char **w_param_text; |
|
unsigned long private_value = 0; |
|
char *link_name; |
|
int ret; |
|
|
|
link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s", |
|
rtd->dai_link->name, id); |
|
if (!link_name) |
|
return ERR_PTR(-ENOMEM); |
|
|
|
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 = NULL; |
|
|
|
/* allocate memory for control, only in case of multiple configs */ |
|
if (rtd->dai_link->num_params > 1) { |
|
w_param_text = devm_kcalloc(card->dev, |
|
rtd->dai_link->num_params, |
|
sizeof(char *), GFP_KERNEL); |
|
if (!w_param_text) { |
|
ret = -ENOMEM; |
|
goto param_fail; |
|
} |
|
|
|
template.num_kcontrols = 1; |
|
template.kcontrol_news = |
|
snd_soc_dapm_alloc_kcontrol(card, |
|
link_name, |
|
rtd->dai_link->params, |
|
rtd->dai_link->num_params, |
|
w_param_text, &private_value); |
|
if (!template.kcontrol_news) { |
|
ret = -ENOMEM; |
|
goto param_fail; |
|
} |
|
} else { |
|
w_param_text = NULL; |
|
} |
|
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); |
|
dev_err(rtd->dev, "ASoC: Failed to create %s widget: %d\n", |
|
link_name, ret); |
|
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_params, w_param_text); |
|
param_fail: |
|
devm_kfree(card->dev, link_name); |
|
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; |
|
dai->playback_widget = 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; |
|
dai->capture_widget = 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 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 *dai, *codec, *playback_cpu, *capture_cpu; |
|
struct snd_pcm_substream *substream; |
|
struct snd_pcm_str *streams = rtd->pcm->streams; |
|
|
|
if (dai_link->params) { |
|
playback_cpu = cpu_dai->capture_widget; |
|
capture_cpu = cpu_dai->playback_widget; |
|
} else { |
|
playback_cpu = cpu_dai->playback_widget; |
|
capture_cpu = cpu_dai->capture_widget; |
|
} |
|
|
|
/* connect BE DAI playback if widgets are valid */ |
|
codec = codec_dai->playback_widget; |
|
|
|
if (playback_cpu && codec) { |
|
if (dai_link->params && !rtd->playback_widget) { |
|
substream = streams[SNDRV_PCM_STREAM_PLAYBACK].substream; |
|
dai = snd_soc_dapm_new_dai(card, substream, "playback"); |
|
if (IS_ERR(dai)) |
|
goto capture; |
|
rtd->playback_widget = dai; |
|
} |
|
|
|
dapm_connect_dai_routes(&card->dapm, cpu_dai, playback_cpu, |
|
rtd->playback_widget, |
|
codec_dai, codec); |
|
} |
|
|
|
capture: |
|
/* connect BE DAI capture if widgets are valid */ |
|
codec = codec_dai->capture_widget; |
|
|
|
if (codec && capture_cpu) { |
|
if (dai_link->params && !rtd->capture_widget) { |
|
substream = streams[SNDRV_PCM_STREAM_CAPTURE].substream; |
|
dai = snd_soc_dapm_new_dai(card, substream, "capture"); |
|
if (IS_ERR(dai)) |
|
return; |
|
rtd->capture_widget = dai; |
|
} |
|
|
|
dapm_connect_dai_routes(&card->dapm, codec_dai, codec, |
|
rtd->capture_widget, |
|
cpu_dai, capture_cpu); |
|
} |
|
} |
|
|
|
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->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->num_codecs == rtd->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; |
|
|
|
mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
soc_dapm_stream_event(rtd, stream, event); |
|
mutex_unlock(&card->dapm_mutex); |
|
} |
|
|
|
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; |
|
|
|
mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
|
|
ret = snd_soc_dapm_set_pin(dapm, pin, 1); |
|
|
|
mutex_unlock(&dapm->card->dapm_mutex); |
|
|
|
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; |
|
|
|
mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
|
|
ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin); |
|
|
|
mutex_unlock(&dapm->card->dapm_mutex); |
|
|
|
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; |
|
|
|
mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
|
|
ret = snd_soc_dapm_set_pin(dapm, pin, 0); |
|
|
|
mutex_unlock(&dapm->card->dapm_mutex); |
|
|
|
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; |
|
|
|
mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
|
|
|
ret = snd_soc_dapm_set_pin(dapm, pin, 0); |
|
|
|
mutex_unlock(&dapm->card->dapm_mutex); |
|
|
|
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; |
|
|
|
mutex_lock(&card->dapm_mutex); |
|
|
|
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); |
|
} |
|
|
|
mutex_unlock(&card->dapm_mutex); |
|
} |
|
|
|
/* |
|
* 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, [email protected]"); |
|
MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
|
MODULE_LICENSE("GPL");
|
|
|