| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Mark Brown | 5567 | 28.33% | 142 | 28.51% |
| Lars-Peter Clausen | 3825 | 19.46% | 80 | 16.06% |
| Richard Purdie | 1914 | 9.74% | 3 | 0.60% |
| Charles Keepax | 1325 | 6.74% | 29 | 5.82% |
| Kuninori Morimoto | 1067 | 5.43% | 59 | 11.85% |
| Liam Girdwood | 989 | 5.03% | 30 | 6.02% |
| Nikesh Oswal | 485 | 2.47% | 1 | 0.20% |
| Jerome Brunet | 472 | 2.40% | 8 | 1.61% |
| Chen-Yu Tsai | 448 | 2.28% | 4 | 0.80% |
| Stephen Warren | 444 | 2.26% | 11 | 2.21% |
| Jarkko Nikula | 308 | 1.57% | 8 | 1.61% |
| Peter Ujfalusi | 295 | 1.50% | 4 | 0.80% |
| Pierre-Louis Bossart | 263 | 1.34% | 3 | 0.60% |
| Anish Kumar | 240 | 1.22% | 2 | 0.40% |
| Srinivas Kandagatla | 162 | 0.82% | 2 | 0.40% |
| Takashi Iwai | 133 | 0.68% | 13 | 2.61% |
| Bard Liao | 133 | 0.68% | 1 | 0.20% |
| Szymon Mielczarek | 120 | 0.61% | 1 | 0.20% |
| Ola Lilja | 111 | 0.56% | 1 | 0.20% |
| Jeeja KP | 85 | 0.43% | 3 | 0.60% |
| Xiang Xiao | 83 | 0.42% | 2 | 0.40% |
| Linus Walleij | 82 | 0.42% | 2 | 0.40% |
| Benoît Cousson | 79 | 0.40% | 2 | 0.40% |
| Piotr Stankiewicz | 77 | 0.39% | 1 | 0.20% |
| 이경택 | 67 | 0.34% | 2 | 0.40% |
| Zhiwei Jiang | 56 | 0.28% | 1 | 0.20% |
| Shuming Fan | 55 | 0.28% | 1 | 0.20% |
| Trevor Wu | 54 | 0.27% | 1 | 0.20% |
| Krzysztof Kozlowski | 52 | 0.26% | 1 | 0.20% |
| Graeme Gregory | 45 | 0.23% | 1 | 0.20% |
| Jon Smirl | 44 | 0.22% | 3 | 0.60% |
| Nenghua Cao | 40 | 0.20% | 1 | 0.20% |
| Frank Mandarino | 33 | 0.17% | 1 | 0.20% |
| Ranjani Sridharan | 31 | 0.16% | 2 | 0.40% |
| Daniel Mack | 28 | 0.14% | 1 | 0.20% |
| Dan Carpenter | 26 | 0.13% | 3 | 0.60% |
| Mythri P K | 25 | 0.13% | 1 | 0.20% |
| Philipp Zabel | 24 | 0.12% | 1 | 0.20% |
| Yisheng Xie | 21 | 0.11% | 1 | 0.20% |
| Nicolin Chen | 20 | 0.10% | 1 | 0.20% |
| Benoît Thébaudeau | 18 | 0.09% | 3 | 0.60% |
| Margarita Olaya Cabrera | 16 | 0.08% | 1 | 0.20% |
| Vinod Koul | 16 | 0.08% | 1 | 0.20% |
| Jon Hunter | 16 | 0.08% | 1 | 0.20% |
| Ian Molton | 16 | 0.08% | 1 | 0.20% |
| Tzung-Bi Shih | 15 | 0.08% | 3 | 0.60% |
| Russell King | 15 | 0.08% | 2 | 0.40% |
| Jyri Sarha | 12 | 0.06% | 2 | 0.40% |
| Cezary Rojewski | 12 | 0.06% | 1 | 0.20% |
| Kees Cook | 12 | 0.06% | 3 | 0.60% |
| Wenwen Wang | 12 | 0.06% | 1 | 0.20% |
| Troy Kisky | 11 | 0.06% | 1 | 0.20% |
| Dimitris Papastamos | 11 | 0.06% | 2 | 0.40% |
| Seppo Ingalsuo | 9 | 0.05% | 1 | 0.20% |
| Shreyas NC | 9 | 0.05% | 2 | 0.40% |
| Thomas Hebb | 8 | 0.04% | 1 | 0.20% |
| Pankaj Bharadiya | 8 | 0.04% | 2 | 0.40% |
| Arnd Bergmann | 8 | 0.04% | 3 | 0.60% |
| Peter Meerwald-Stadler | 7 | 0.04% | 1 | 0.20% |
| Daniel Ribeiro | 6 | 0.03% | 1 | 0.20% |
| Mathieu Malaterre | 6 | 0.03% | 1 | 0.20% |
| Subhransu S. Prusty | 5 | 0.03% | 1 | 0.20% |
| Gustavo A. R. Silva | 5 | 0.03% | 1 | 0.20% |
| Silvio Cesare | 5 | 0.03% | 1 | 0.20% |
| Eero Nurkkala | 5 | 0.03% | 1 | 0.20% |
| Arun Shamanna Lakshmi | 5 | 0.03% | 1 | 0.20% |
| Ryo Tsutsui | 5 | 0.03% | 1 | 0.20% |
| Yang Yingliang | 4 | 0.02% | 1 | 0.20% |
| Geert Uytterhoeven | 4 | 0.02% | 1 | 0.20% |
| Guennadi Liakhovetski | 4 | 0.02% | 1 | 0.20% |
| KaiChieh Chuang | 4 | 0.02% | 1 | 0.20% |
| Colin Ian King | 3 | 0.02% | 1 | 0.20% |
| Richard Zhao | 3 | 0.02% | 1 | 0.20% |
| Mengdong Lin | 3 | 0.02% | 1 | 0.20% |
| Marek Belisko | 3 | 0.02% | 1 | 0.20% |
| Sudip Mukherjee | 3 | 0.02% | 1 | 0.20% |
| Linus Torvalds (pre-git) | 2 | 0.01% | 1 | 0.20% |
| Fabio Baltieri | 2 | 0.01% | 1 | 0.20% |
| Stephen Boyd | 2 | 0.01% | 1 | 0.20% |
| Fabio Estevam | 2 | 0.01% | 1 | 0.20% |
| Xiaomeng Tong | 2 | 0.01% | 1 | 0.20% |
| Julia Lawall | 1 | 0.01% | 1 | 0.20% |
| Linus Torvalds | 1 | 0.01% | 1 | 0.20% |
| Rajan Vaja | 1 | 0.01% | 1 | 0.20% |
| Joe Perches | 1 | 0.01% | 1 | 0.20% |
| Milan Plzik | 1 | 0.01% | 1 | 0.20% |
| Adrian Bunk | 1 | 0.01% | 1 | 0.20% |
| Paul Cercueil | 1 | 0.01% | 1 | 0.20% |
| Dan J Williams | 1 | 0.01% | 1 | 0.20% |
| Mauro Carvalho Chehab | 1 | 0.01% | 1 | 0.20% |
| Jonathan Corbet | 1 | 0.01% | 1 | 0.20% |
| Total | 19652 | 498 |
// SPDX-License-Identifier: GPL-2.0+ // // soc-dapm.c -- ALSA SoC Dynamic Audio Power Management // // Copyright 2005 Wolfson Microelectronics PLC. // Author: Liam Girdwood <lrg@slimlogic.co.uk> // // Features: // o Changes power status of internal codec blocks depending on the // dynamic configuration of codec internal audio paths and active // DACs/ADCs. // o Platform power domain - can support external components i.e. amps and // mic/headphone insertion events. // o Automatic Mic Bias support // o Jack insertion power event initiation - e.g. hp insertion will enable // sinks, dacs, etc // o Delayed power down of audio subsystem to reduce pops between a quick // device reopen. #include <linux/module.h> #include <linux/init.h> #include <linux/async.h> #include <linux/delay.h> #include <linux/pm.h> #include <linux/bitops.h> #include <linux/platform_device.h> #include <linux/jiffies.h> #include <linux/debugfs.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> #include <linux/pinctrl/consumer.h> #include <linux/clk.h> #include <linux/slab.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/initval.h> #include <trace/events/asoc.h> #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++; #define SND_SOC_DAPM_DIR_REVERSE(x) ((x == SND_SOC_DAPM_DIR_IN) ? \ SND_SOC_DAPM_DIR_OUT : SND_SOC_DAPM_DIR_IN) #define snd_soc_dapm_for_each_direction(dir) \ for ((dir) = SND_SOC_DAPM_DIR_IN; (dir) <= SND_SOC_DAPM_DIR_OUT; \ (dir)++) 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 * snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, const struct snd_soc_dapm_widget *widget); struct snd_soc_dapm_widget * snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm, const struct snd_soc_dapm_widget *widget); static unsigned int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg); /* dapm power sequences - make this per codec in the future */ static int dapm_up_seq[] = { [snd_soc_dapm_pre] = 1, [snd_soc_dapm_regulator_supply] = 2, [snd_soc_dapm_pinctrl] = 2, [snd_soc_dapm_clock_supply] = 2, [snd_soc_dapm_supply] = 3, [snd_soc_dapm_dai_link] = 3, [snd_soc_dapm_micbias] = 4, [snd_soc_dapm_vmid] = 4, [snd_soc_dapm_dai_in] = 5, [snd_soc_dapm_dai_out] = 5, [snd_soc_dapm_aif_in] = 5, [snd_soc_dapm_aif_out] = 5, [snd_soc_dapm_mic] = 6, [snd_soc_dapm_siggen] = 6, [snd_soc_dapm_input] = 6, [snd_soc_dapm_output] = 6, [snd_soc_dapm_mux] = 7, [snd_soc_dapm_demux] = 7, [snd_soc_dapm_dac] = 8, [snd_soc_dapm_switch] = 9, [snd_soc_dapm_mixer] = 9, [snd_soc_dapm_mixer_named_ctl] = 9, [snd_soc_dapm_pga] = 10, [snd_soc_dapm_buffer] = 10, [snd_soc_dapm_scheduler] = 10, [snd_soc_dapm_effect] = 10, [snd_soc_dapm_src] = 10, [snd_soc_dapm_asrc] = 10, [snd_soc_dapm_encoder] = 10, [snd_soc_dapm_decoder] = 10, [snd_soc_dapm_adc] = 11, [snd_soc_dapm_out_drv] = 12, [snd_soc_dapm_hp] = 12, [snd_soc_dapm_line] = 12, [snd_soc_dapm_sink] = 12, [snd_soc_dapm_spk] = 13, [snd_soc_dapm_kcontrol] = 14, [snd_soc_dapm_post] = 15, }; static int dapm_down_seq[] = { [snd_soc_dapm_pre] = 1, [snd_soc_dapm_kcontrol] = 2, [snd_soc_dapm_adc] = 3, [snd_soc_dapm_spk] = 4, [snd_soc_dapm_hp] = 5, [snd_soc_dapm_line] = 5, [snd_soc_dapm_out_drv] = 5, [snd_soc_dapm_sink] = 6, [snd_soc_dapm_pga] = 6, [snd_soc_dapm_buffer] = 6, [snd_soc_dapm_scheduler] = 6, [snd_soc_dapm_effect] = 6, [snd_soc_dapm_src] = 6, [snd_soc_dapm_asrc] = 6, [snd_soc_dapm_encoder] = 6, [snd_soc_dapm_decoder] = 6, [snd_soc_dapm_switch] = 7, [snd_soc_dapm_mixer_named_ctl] = 7, [snd_soc_dapm_mixer] = 7, [snd_soc_dapm_dac] = 8, [snd_soc_dapm_mic] = 9, [snd_soc_dapm_siggen] = 9, [snd_soc_dapm_input] = 9, [snd_soc_dapm_output] = 9, [snd_soc_dapm_micbias] = 10, [snd_soc_dapm_vmid] = 10, [snd_soc_dapm_mux] = 11, [snd_soc_dapm_demux] = 11, [snd_soc_dapm_aif_in] = 12, [snd_soc_dapm_aif_out] = 12, [snd_soc_dapm_dai_in] = 12, [snd_soc_dapm_dai_out] = 12, [snd_soc_dapm_dai_link] = 13, [snd_soc_dapm_supply] = 14, [snd_soc_dapm_clock_supply] = 15, [snd_soc_dapm_pinctrl] = 15, [snd_soc_dapm_regulator_supply] = 15, [snd_soc_dapm_post] = 16, }; static void dapm_assert_locked(struct snd_soc_dapm_context *dapm) { if (snd_soc_card_is_instantiated(dapm->card)) snd_soc_dapm_mutex_assert_held(dapm); } static void pop_wait(u32 pop_time) { if (pop_time) schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); } __printf(3, 4) static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...) { va_list args; char *buf; if (!pop_time) return; buf = kmalloc(PAGE_SIZE, GFP_KERNEL); if (buf == NULL) return; va_start(args, fmt); vsnprintf(buf, PAGE_SIZE, fmt, args); dev_info(dev, "%s", buf); va_end(args); kfree(buf); } static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w) { return !list_empty(&w->dirty); } static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason) { dapm_assert_locked(w->dapm); if (!dapm_dirty_widget(w)) { dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n", w->name, reason); list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty); } } /* * Common implementation for dapm_widget_invalidate_input_paths() and * dapm_widget_invalidate_output_paths(). 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 void dapm_widget_invalidate_paths( struct snd_soc_dapm_widget *w, enum snd_soc_dapm_direction dir) { enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir); struct snd_soc_dapm_widget *node; struct snd_soc_dapm_path *p; LIST_HEAD(list); dapm_assert_locked(w->dapm); if (w->endpoints[dir] == -1) return; list_add_tail(&w->work_list, &list); w->endpoints[dir] = -1; list_for_each_entry(w, &list, work_list) { snd_soc_dapm_widget_for_each_path(w, dir, p) { if (p->is_supply || p->weak || !p->connect) continue; node = p->node[rdir]; if (node->endpoints[dir] != -1) { node->endpoints[dir] = -1; list_add_tail(&node->work_list, &list); } } } } /* * dapm_widget_invalidate_input_paths() - Invalidate the cached number of * input paths * @w: The widget for which to invalidate the cached number of input paths * * Resets the cached number of inputs for the specified widget and all widgets * that can be reached via outcoming paths from the widget. * * This function must be called if the number of output paths for a widget might * have changed. E.g. if the source state of a widget changes or a path is added * or activated with the widget as the sink. */ static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w) { dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_IN); } /* * dapm_widget_invalidate_output_paths() - Invalidate the cached number of * output paths * @w: The widget for which to invalidate the cached number of output paths * * Resets the cached number of outputs for the specified widget and all widgets * that can be reached via incoming paths from the widget. * * This function must be called if the number of output paths for a widget might * have changed. E.g. if the sink state of a widget changes or a path is added * or activated with the widget as the source. */ static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget *w) { dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_OUT); } /* * dapm_path_invalidate() - Invalidates the cached number of inputs and outputs * for the widgets connected to a path * @p: The path to invalidate * * Resets the cached number of inputs for the sink of the path and the cached * number of outputs for the source of the path. * * This function must be called when a path is added, removed or the connected * state changes. */ static void dapm_path_invalidate(struct snd_soc_dapm_path *p) { /* * Weak paths or supply paths do not influence the number of input or * output paths of their neighbors. */ if (p->weak || p->is_supply) return; /* * The number of connected endpoints is the sum of the number of * connected endpoints of all neighbors. If a node with 0 connected * endpoints is either connected or disconnected that sum won't change, * so there is no need to re-check the path. */ if (p->source->endpoints[SND_SOC_DAPM_DIR_IN] != 0) dapm_widget_invalidate_input_paths(p->sink); if (p->sink->endpoints[SND_SOC_DAPM_DIR_OUT] != 0) dapm_widget_invalidate_output_paths(p->source); } void dapm_mark_endpoints_dirty(struct snd_soc_card *card) { struct snd_soc_dapm_widget *w; snd_soc_dapm_mutex_lock_root(card); for_each_card_widgets(card, w) { if (w->is_ep) { dapm_mark_dirty(w, "Rechecking endpoints"); if (w->is_ep & SND_SOC_DAPM_EP_SINK) dapm_widget_invalidate_output_paths(w); if (w->is_ep & SND_SOC_DAPM_EP_SOURCE) dapm_widget_invalidate_input_paths(w); } } snd_soc_dapm_mutex_unlock(card); } EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty); /* create a new dapm widget */ static inline struct snd_soc_dapm_widget *dapm_cnew_widget( const struct snd_soc_dapm_widget *_widget) { struct snd_soc_dapm_widget *w; w = kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); if (!w) return NULL; /* * w->name is duplicated in caller, but w->sname isn't. * Duplicate it here if defined */ if (_widget->sname) { w->sname = kstrdup_const(_widget->sname, GFP_KERNEL); if (!w->sname) { kfree(w); return NULL; } } return w; } struct dapm_kcontrol_data { unsigned int value; struct snd_soc_dapm_widget *widget; struct list_head paths; struct snd_soc_dapm_widget_list *wlist; }; static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget, struct snd_kcontrol *kcontrol, const char *ctrl_name) { struct dapm_kcontrol_data *data; struct soc_mixer_control *mc; struct soc_enum *e; const char *name; int ret; data = kzalloc(sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; INIT_LIST_HEAD(&data->paths); switch (widget->id) { case snd_soc_dapm_switch: case snd_soc_dapm_mixer: case snd_soc_dapm_mixer_named_ctl: mc = (struct soc_mixer_control *)kcontrol->private_value; if (mc->autodisable) { struct snd_soc_dapm_widget template; if (snd_soc_volsw_is_stereo(mc)) dev_warn(widget->dapm->dev, "ASoC: Unsupported stereo autodisable control '%s'\n", ctrl_name); name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name, "Autodisable"); if (!name) { ret = -ENOMEM; goto err_data; } memset(&template, 0, sizeof(template)); template.reg = mc->reg; template.mask = (1 << fls(mc->max)) - 1; template.shift = mc->shift; if (mc->invert) template.off_val = mc->max; else template.off_val = 0; template.on_val = template.off_val; template.id = snd_soc_dapm_kcontrol; template.name = name; data->value = template.on_val; data->widget = snd_soc_dapm_new_control_unlocked(widget->dapm, &template); kfree(name); if (IS_ERR(data->widget)) { ret = PTR_ERR(data->widget); goto err_data; } } break; case snd_soc_dapm_demux: case snd_soc_dapm_mux: e = (struct soc_enum *)kcontrol->private_value; if (e->autodisable) { struct snd_soc_dapm_widget template; name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name, "Autodisable"); if (!name) { ret = -ENOMEM; goto err_data; } memset(&template, 0, sizeof(template)); template.reg = e->reg; template.mask = e->mask; template.shift = e->shift_l; template.off_val = snd_soc_enum_item_to_val(e, 0); template.on_val = template.off_val; template.id = snd_soc_dapm_kcontrol; template.name = name; data->value = template.on_val; data->widget = snd_soc_dapm_new_control_unlocked( widget->dapm, &template); kfree(name); if (IS_ERR(data->widget)) { ret = PTR_ERR(data->widget); goto err_data; } snd_soc_dapm_add_path(widget->dapm, data->widget, widget, NULL, NULL); } else if (e->reg != SND_SOC_NOPM) { data->value = soc_dapm_read(widget->dapm, e->reg) & (e->mask << e->shift_l); } break; default: break; } kcontrol->private_data = data; return 0; err_data: kfree(data); return ret; } static void dapm_kcontrol_free(struct snd_kcontrol *kctl) { struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl); list_del(&data->paths); kfree(data->wlist); kfree(data); } static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist( const struct snd_kcontrol *kcontrol) { struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); return data->wlist; } static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol, struct snd_soc_dapm_widget *widget) { struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); struct snd_soc_dapm_widget_list *new_wlist; unsigned int n; if (data->wlist) n = data->wlist->num_widgets + 1; else n = 1; new_wlist = krealloc(data->wlist, struct_size(new_wlist, widgets, n), GFP_KERNEL); if (!new_wlist) return -ENOMEM; new_wlist->num_widgets = n; new_wlist->widgets[n - 1] = widget; data->wlist = new_wlist; return 0; } static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol, struct snd_soc_dapm_path *path) { struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); list_add_tail(&path->list_kcontrol, &data->paths); } static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol) { struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); if (!data->widget) return true; return data->widget->power; } static struct list_head *dapm_kcontrol_get_path_list( const struct snd_kcontrol *kcontrol) { struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); return &data->paths; } #define dapm_kcontrol_for_each_path(path, kcontrol) \ list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \ list_kcontrol) unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol) { struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); return data->value; } EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value); static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol, unsigned int value) { struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); if (data->value == value) return false; if (data->widget) { switch (dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->id) { case snd_soc_dapm_switch: case snd_soc_dapm_mixer: case snd_soc_dapm_mixer_named_ctl: data->widget->on_val = value & data->widget->mask; break; case snd_soc_dapm_demux: case snd_soc_dapm_mux: data->widget->on_val = value >> data->widget->shift; break; default: data->widget->on_val = value; break; } } data->value = value; return true; } /** * snd_soc_dapm_kcontrol_widget() - Returns the widget associated to a * kcontrol * @kcontrol: The kcontrol */ struct snd_soc_dapm_widget *snd_soc_dapm_kcontrol_widget( struct snd_kcontrol *kcontrol) { return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]; } EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_widget); /** * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a * kcontrol * @kcontrol: The kcontrol * * Note: This function must only be used on kcontrols that are known to have * been registered for a CODEC. Otherwise the behaviour is undefined. */ struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm( struct snd_kcontrol *kcontrol) { return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm; } EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm); static void dapm_reset(struct snd_soc_card *card) { struct snd_soc_dapm_widget *w; snd_soc_dapm_mutex_assert_held(card); memset(&card->dapm_stats, 0, sizeof(card->dapm_stats)); for_each_card_widgets(card, w) { w->new_power = w->power; w->power_checked = false; } } static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm) { if (!dapm->component) return NULL; return dapm->component->name_prefix; } static unsigned int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg) { if (!dapm->component) return -EIO; return snd_soc_component_read(dapm->component, reg); } static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm, int reg, unsigned int mask, unsigned int value) { if (!dapm->component) return -EIO; return snd_soc_component_update_bits(dapm->component, reg, mask, value); } static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm, int reg, unsigned int mask, unsigned int value) { if (!dapm->component) return -EIO; return snd_soc_component_test_bits(dapm->component, reg, mask, value); } static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm) { if (dapm->component) snd_soc_component_async_complete(dapm->component); } static struct snd_soc_dapm_widget * dapm_wcache_lookup(struct snd_soc_dapm_widget *w, const char *name) { if (w) { struct list_head *wlist = &w->dapm->card->widgets; const int depth = 2; int i = 0; list_for_each_entry_from(w, wlist, list) { if (!strcmp(name, w->name)) return w; if (++i == depth) break; } } return NULL; } /** * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level * @dapm: The DAPM context for which to set the level * @level: The level to set * * Forces the DAPM bias level to a specific state. It will call the bias level * callback of DAPM context with the specified level. This will even happen if * the context is already at the same level. Furthermore it will not go through * the normal bias level sequencing, meaning any intermediate states between the * current and the target state will not be entered. * * Note that the change in bias level is only temporary and the next time * snd_soc_dapm_sync() is called the state will be set to the level as * determined by the DAPM core. The function is mainly intended to be used to * used during probe or resume from suspend to power up the device so * initialization can be done, before the DAPM core takes over. */ int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level) { int ret = 0; if (dapm->component) ret = snd_soc_component_set_bias_level(dapm->component, level); if (ret == 0) dapm->bias_level = level; return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level); /** * snd_soc_dapm_set_bias_level - set the bias level for the system * @dapm: DAPM context * @level: level to configure * * Configure the bias (power) levels for the SoC audio device. * * Returns 0 for success else error. */ static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level) { struct snd_soc_card *card = dapm->card; int ret = 0; trace_snd_soc_bias_level_start(card, level); ret = snd_soc_card_set_bias_level(card, dapm, level); if (ret != 0) goto out; if (!card || dapm != &card->dapm) ret = snd_soc_dapm_force_bias_level(dapm, level); if (ret != 0) goto out; ret = snd_soc_card_set_bias_level_post(card, dapm, level); out: trace_snd_soc_bias_level_done(card, level); return ret; } /* connect mux widget to its interconnecting audio paths */ static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, struct snd_soc_dapm_path *path, const char *control_name, struct snd_soc_dapm_widget *w) { const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0]; struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned int item; int i; if (e->reg != SND_SOC_NOPM) { unsigned int val; val = soc_dapm_read(dapm, e->reg); val = (val >> e->shift_l) & e->mask; item = snd_soc_enum_val_to_item(e, val); } else { /* since a virtual mux has no backing registers to * decide which path to connect, it will try to match * with the first enumeration. This is to ensure * that the default mux choice (the first) will be * correctly powered up during initialization. */ item = 0; } i = match_string(e->texts, e->items, control_name); if (i < 0) return -ENODEV; path->name = e->texts[i]; path->connect = (i == item); return 0; } /* set up initial codec paths */ static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i, int nth_path) { struct soc_mixer_control *mc = (struct soc_mixer_control *) p->sink->kcontrol_news[i].private_value; unsigned int reg = mc->reg; unsigned int invert = mc->invert; if (reg != SND_SOC_NOPM) { unsigned int shift = mc->shift; unsigned int max = mc->max; unsigned int mask = (1 << fls(max)) - 1; unsigned int val = soc_dapm_read(p->sink->dapm, reg); /* * The nth_path argument allows this function to know * which path of a kcontrol it is setting the initial * status for. Ideally this would support any number * of paths and channels. But since kcontrols only come * in mono and stereo variants, we are limited to 2 * channels. * * The following code assumes for stereo controls the * first path is the left channel, and all remaining * paths are the right channel. */ if (snd_soc_volsw_is_stereo(mc) && nth_path > 0) { if (reg != mc->rreg) val = soc_dapm_read(p->sink->dapm, mc->rreg); val = (val >> mc->rshift) & mask; } else { val = (val >> shift) & mask; } if (invert) val = max - val; p->connect = !!val; } else { /* since a virtual mixer has no backing registers to * decide which path to connect, it will try to match * with initial state. This is to ensure * that the default mixer choice will be * correctly powered up during initialization. */ p->connect = invert; } } /* connect mixer widget to its interconnecting audio paths */ static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, struct snd_soc_dapm_path *path, const char *control_name) { int i, nth_path = 0; /* search for mixer kcontrol */ for (i = 0; i < path->sink->num_kcontrols; i++) { if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) { path->name = path->sink->kcontrol_news[i].name; dapm_set_mixer_path_status(path, i, nth_path++); return 0; } } return -ENODEV; } static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, struct snd_soc_dapm_widget *kcontrolw, const struct snd_kcontrol_new *kcontrol_new, struct snd_kcontrol **kcontrol) { struct snd_soc_dapm_widget *w; int i; *kcontrol = NULL; for_each_card_widgets(dapm->card, w) { if (w == kcontrolw || w->dapm != kcontrolw->dapm) continue; for (i = 0; i < w->num_kcontrols; i++) { if (&w->kcontrol_news[i] == kcontrol_new) { if (w->kcontrols) *kcontrol = w->kcontrols[i]; return 1; } } } return 0; } /* * Determine if a kcontrol is shared. If it is, look it up. If it isn't, * create it. Either way, add the widget into the control's widget list */ static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget *w, int kci) { struct snd_soc_dapm_context *dapm = w->dapm; struct snd_card *card = dapm->card->snd_card; const char *prefix; size_t prefix_len; int shared; struct snd_kcontrol *kcontrol; bool wname_in_long_name, kcname_in_long_name; char *long_name = NULL; const char *name; int ret = 0; prefix = soc_dapm_prefix(dapm); if (prefix) prefix_len = strlen(prefix) + 1; else prefix_len = 0; shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci], &kcontrol); if (!kcontrol) { if (shared) { wname_in_long_name = false; kcname_in_long_name = true; } else { switch (w->id) { case snd_soc_dapm_switch: case snd_soc_dapm_mixer: case snd_soc_dapm_pga: case snd_soc_dapm_effect: case snd_soc_dapm_out_drv: wname_in_long_name = true; kcname_in_long_name = true; break; case snd_soc_dapm_mixer_named_ctl: wname_in_long_name = false; kcname_in_long_name = true; break; case snd_soc_dapm_demux: case snd_soc_dapm_mux: wname_in_long_name = true; kcname_in_long_name = false; break; default: return -EINVAL; } } if (w->no_wname_in_kcontrol_name) wname_in_long_name = false; if (wname_in_long_name && kcname_in_long_name) { /* * The control will get a prefix from the control * creation process but we're also using the same * prefix for widgets so cut the prefix off the * front of the widget name. */ long_name = kasprintf(GFP_KERNEL, "%s %s", w->name + prefix_len, w->kcontrol_news[kci].name); if (long_name == NULL) return -ENOMEM; name = long_name; } else if (wname_in_long_name) { long_name = NULL; name = w->name + prefix_len; } else { long_name = NULL; name = w->kcontrol_news[kci].name; } kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name, prefix); if (!kcontrol) { ret = -ENOMEM; goto exit_free; } kcontrol->private_free = dapm_kcontrol_free; ret = dapm_kcontrol_data_alloc(w, kcontrol, name); if (ret) { snd_ctl_free_one(kcontrol); goto exit_free; } ret = snd_ctl_add(card, kcontrol); if (ret < 0) { dev_err(dapm->dev, "ASoC: failed to add widget %s dapm kcontrol %s: %d\n", w->name, name, ret); goto exit_free; } } ret = dapm_kcontrol_add_widget(kcontrol, w); if (ret == 0) w->kcontrols[kci] = kcontrol; exit_free: kfree(long_name); return ret; } /* create new dapm mixer control */ static int dapm_new_mixer(struct snd_soc_dapm_widget *w) { int i, ret; struct snd_soc_dapm_path *path; struct dapm_kcontrol_data *data; /* add kcontrol */ for (i = 0; i < w->num_kcontrols; i++) { /* match name */ snd_soc_dapm_widget_for_each_source_path(w, path) { /* mixer/mux paths name must match control name */ if (path->name != (char *)w->kcontrol_news[i].name) continue; if (!w->kcontrols[i]) { ret = dapm_create_or_share_kcontrol(w, i); if (ret < 0) return ret; } dapm_kcontrol_add_path(w->kcontrols[i], path); data = snd_kcontrol_chip(w->kcontrols[i]); if (data->widget) snd_soc_dapm_add_path(data->widget->dapm, data->widget, path->source, NULL, NULL); } } return 0; } /* create new dapm mux control */ static int dapm_new_mux(struct snd_soc_dapm_widget *w) { struct snd_soc_dapm_context *dapm = w->dapm; enum snd_soc_dapm_direction dir; struct snd_soc_dapm_path *path; const char *type; int ret; switch (w->id) { case snd_soc_dapm_mux: dir = SND_SOC_DAPM_DIR_OUT; type = "mux"; break; case snd_soc_dapm_demux: dir = SND_SOC_DAPM_DIR_IN; type = "demux"; break; default: return -EINVAL; } if (w->num_kcontrols != 1) { dev_err(dapm->dev, "ASoC: %s %s has incorrect number of controls\n", type, w->name); return -EINVAL; } if (list_empty(&w->edges[dir])) { dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name); return -EINVAL; } ret = dapm_create_or_share_kcontrol(w, 0); if (ret < 0) return ret; snd_soc_dapm_widget_for_each_path(w, dir, path) { if (path->name) dapm_kcontrol_add_path(w->kcontrols[0], path); } return 0; } /* create new dapm volume control */ static int dapm_new_pga(struct snd_soc_dapm_widget *w) { int i; for (i = 0; i < w->num_kcontrols; i++) { int ret = dapm_create_or_share_kcontrol(w, i); if (ret < 0) return ret; } return 0; } /* create new dapm dai link control */ static int dapm_new_dai_link(struct snd_soc_dapm_widget *w) { int i; struct snd_soc_pcm_runtime *rtd = w->priv; /* create control for links with > 1 config */ if (rtd->dai_link->num_c2c_params <= 1) return 0; /* add kcontrol */ for (i = 0; i < w->num_kcontrols; i++) { struct snd_soc_dapm_context *dapm = w->dapm; struct snd_card *card = dapm->card->snd_card; struct snd_kcontrol *kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w, w->name, NULL); int ret = snd_ctl_add(card, kcontrol); if (ret < 0) { dev_err(dapm->dev, "ASoC: failed to add widget %s dapm kcontrol %s: %d\n", w->name, w->kcontrol_news[i].name, ret); return ret; } kcontrol->private_data = w; w->kcontrols[i] = kcontrol; } return 0; } /* We implement power down on suspend by checking the power state of * the ALSA card - when we are suspending the ALSA state for the card * is set to D3. */ static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) { int level = snd_power_get_state(widget->dapm->card->snd_card); switch (level) { case SNDRV_CTL_POWER_D3hot: case SNDRV_CTL_POWER_D3cold: if (widget->ignore_suspend) dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n", widget->name); return widget->ignore_suspend; default: return 1; } } static void dapm_widget_list_free(struct snd_soc_dapm_widget_list **list) { kfree(*list); } static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list, struct list_head *widgets) { struct snd_soc_dapm_widget *w; struct list_head *it; unsigned int size = 0; unsigned int i = 0; list_for_each(it, widgets) size++; *list = kzalloc(struct_size(*list, widgets, size), GFP_KERNEL); if (*list == NULL) return -ENOMEM; list_for_each_entry(w, widgets, work_list) (*list)->widgets[i++] = w; (*list)->num_widgets = i; return 0; } /* * Recursively reset the cached number of inputs or outputs for the specified * widget and all widgets that can be reached via incoming or outcoming paths * from the widget. */ static void invalidate_paths_ep(struct snd_soc_dapm_widget *widget, enum snd_soc_dapm_direction dir) { enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir); struct snd_soc_dapm_path *path; widget->endpoints[dir] = -1; snd_soc_dapm_widget_for_each_path(widget, rdir, path) { if (path->weak || path->is_supply) continue; if (path->walking) return; if (path->connect) { path->walking = 1; invalidate_paths_ep(path->node[dir], dir); path->walking = 0; } } } /* * Common implementation for is_connected_output_ep() and * is_connected_input_ep(). The function is inlined since the combined size of * the two specialized functions is only marginally larger then the size of the * generic function and at the same time the fast path of the specialized * functions is significantly smaller than the generic function. */ static __always_inline int is_connected_ep(struct snd_soc_dapm_widget *widget, struct list_head *list, enum snd_soc_dapm_direction dir, int (*fn)(struct snd_soc_dapm_widget *, struct list_head *, bool (*custom_stop_condition)(struct snd_soc_dapm_widget *, enum snd_soc_dapm_direction)), bool (*custom_stop_condition)(struct snd_soc_dapm_widget *, enum snd_soc_dapm_direction)) { enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir); struct snd_soc_dapm_path *path; int con = 0; if (widget->endpoints[dir] >= 0) return widget->endpoints[dir]; DAPM_UPDATE_STAT(widget, path_checks); /* do we need to add this widget to the list ? */ if (list) list_add_tail(&widget->work_list, list); if (custom_stop_condition && custom_stop_condition(widget, dir)) { list = NULL; custom_stop_condition = NULL; } if ((widget->is_ep & SND_SOC_DAPM_DIR_TO_EP(dir)) && widget->connected) { widget->endpoints[dir] = snd_soc_dapm_suspend_check(widget); return widget->endpoints[dir]; } snd_soc_dapm_widget_for_each_path(widget, rdir, path) { DAPM_UPDATE_STAT(widget, neighbour_checks); if (path->weak || path->is_supply) continue; if (path->walking) return 1; trace_snd_soc_dapm_path(widget, dir, path); if (path->connect) { path->walking = 1; con += fn(path->node[dir], list, custom_stop_condition); path->walking = 0; } } widget->endpoints[dir] = con; return con; } /* * Recursively check for a completed path to an active or physically connected * output widget. Returns number of complete paths. * * Optionally, can be supplied with a function acting as a stopping condition. * This function takes the dapm widget currently being examined and the walk * direction as an arguments, it should return true if widgets from that point * in the graph onwards should not be added to the widget list. */ static int is_connected_output_ep(struct snd_soc_dapm_widget *widget, struct list_head *list, bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i, enum snd_soc_dapm_direction)) { return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_OUT, is_connected_output_ep, custom_stop_condition); } /* * Recursively check for a completed path to an active or physically connected * input widget. Returns number of complete paths. * * Optionally, can be supplied with a function acting as a stopping condition. * This function takes the dapm widget currently being examined and the walk * direction as an arguments, it should return true if the walk should be * stopped and false otherwise. */ static int is_connected_input_ep(struct snd_soc_dapm_widget *widget, struct list_head *list, bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i, enum snd_soc_dapm_direction)) { return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_IN, is_connected_input_ep, custom_stop_condition); } /** * snd_soc_dapm_dai_get_connected_widgets - query audio path and it's widgets. * @dai: the soc DAI. * @stream: stream direction. * @list: list of active widgets for this stream. * @custom_stop_condition: (optional) a function meant to stop the widget graph * walk based on custom logic. * * Queries DAPM graph as to whether a valid audio stream path exists for * the initial stream specified by name. This takes into account * current mixer and mux kcontrol settings. Creates list of valid widgets. * * Optionally, can be supplied with a function acting as a stopping condition. * This function takes the dapm widget currently being examined and the walk * direction as an arguments, it should return true if the walk should be * stopped and false otherwise. * * Returns the number of valid paths or negative error. */ int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream, struct snd_soc_dapm_widget_list **list, bool (*custom_stop_condition)(struct snd_soc_dapm_widget *, enum snd_soc_dapm_direction)) { struct snd_soc_card *card = dai->component->card; struct snd_soc_dapm_widget *w = snd_soc_dai_get_widget(dai, stream); LIST_HEAD(widgets); int paths; int ret; snd_soc_dapm_mutex_lock(card); if (stream == SNDRV_PCM_STREAM_PLAYBACK) { invalidate_paths_ep(w, SND_SOC_DAPM_DIR_OUT); paths = is_connected_output_ep(w, &widgets, custom_stop_condition); } else { invalidate_paths_ep(w, SND_SOC_DAPM_DIR_IN); paths = is_connected_input_ep(w, &widgets, custom_stop_condition); } /* Drop starting point */ list_del(widgets.next); ret = dapm_widget_list_create(list, &widgets); if (ret) paths = ret; trace_snd_soc_dapm_connected(paths, stream); snd_soc_dapm_mutex_unlock(card); return paths; } EXPORT_SYMBOL_GPL(snd_soc_dapm_dai_get_connected_widgets); void snd_soc_dapm_dai_free_widgets(struct snd_soc_dapm_widget_list **list) { dapm_widget_list_free(list); } EXPORT_SYMBOL_GPL(snd_soc_dapm_dai_free_widgets); /* * Handler for regulator supply widget. */ int dapm_regulator_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { int ret; soc_dapm_async_complete(w->dapm); if (SND_SOC_DAPM_EVENT_ON(event)) { if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) { ret = regulator_allow_bypass(w->regulator, false); if (ret != 0) dev_warn(w->dapm->dev, "ASoC: Failed to unbypass %s: %d\n", w->name, ret); } return regulator_enable(w->regulator); } else { if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) { ret = regulator_allow_bypass(w->regulator, true); if (ret != 0) dev_warn(w->dapm->dev, "ASoC: Failed to bypass %s: %d\n", w->name, ret); } return regulator_disable_deferred(w->regulator, w->shift); } } EXPORT_SYMBOL_GPL(dapm_regulator_event); /* * Handler for pinctrl widget. */ int dapm_pinctrl_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_dapm_pinctrl_priv *priv = w->priv; struct pinctrl *p = w->pinctrl; struct pinctrl_state *s; if (!p || !priv) return -EIO; if (SND_SOC_DAPM_EVENT_ON(event)) s = pinctrl_lookup_state(p, priv->active_state); else s = pinctrl_lookup_state(p, priv->sleep_state); if (IS_ERR(s)) return PTR_ERR(s); return pinctrl_select_state(p, s); } EXPORT_SYMBOL_GPL(dapm_pinctrl_event); /* * Handler for clock supply widget. */ int dapm_clock_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { if (!w->clk) return -EIO; soc_dapm_async_complete(w->dapm); if (SND_SOC_DAPM_EVENT_ON(event)) { return clk_prepare_enable(w->clk); } else { clk_disable_unprepare(w->clk); return 0; } return 0; } EXPORT_SYMBOL_GPL(dapm_clock_event); static int dapm_widget_power_check(struct snd_soc_dapm_widget *w) { if (w->power_checked) return w->new_power; if (w->force) w->new_power = 1; else w->new_power = w->power_check(w); w->power_checked = true; return w->new_power; } /* Generic check to see if a widget should be powered. */ static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) { int in, out; DAPM_UPDATE_STAT(w, power_checks); in = is_connected_input_ep(w, NULL, NULL); out = is_connected_output_ep(w, NULL, NULL); return out != 0 && in != 0; } /* Check to see if a power supply is needed */ static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) { struct snd_soc_dapm_path *path; DAPM_UPDATE_STAT(w, power_checks); /* Check if one of our outputs is connected */ snd_soc_dapm_widget_for_each_sink_path(w, path) { DAPM_UPDATE_STAT(w, neighbour_checks); if (path->weak) continue; if (path->connected && !path->connected(path->source, path->sink)) continue; if (dapm_widget_power_check(path->sink)) return 1; } return 0; } static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w) { return w->connected; } static int dapm_seq_compare(struct snd_soc_dapm_widget *a, struct snd_soc_dapm_widget *b, bool power_up) { int *sort; BUILD_BUG_ON(ARRAY_SIZE(dapm_up_seq) != SND_SOC_DAPM_TYPE_COUNT); BUILD_BUG_ON(ARRAY_SIZE(dapm_down_seq) != SND_SOC_DAPM_TYPE_COUNT); if (power_up) sort = dapm_up_seq; else sort = dapm_down_seq; WARN_ONCE(sort[a->id] == 0, "offset a->id %d not initialized\n", a->id); WARN_ONCE(sort[b->id] == 0, "offset b->id %d not initialized\n", b->id); if (sort[a->id] != sort[b->id]) return sort[a->id] - sort[b->id]; if (a->subseq != b->subseq) { if (power_up) return a->subseq - b->subseq; else return b->subseq - a->subseq; } if (a->reg != b->reg) return a->reg - b->reg; if (a->dapm != b->dapm) return (unsigned long)a->dapm - (unsigned long)b->dapm; return 0; } /* Insert a widget in order into a DAPM power sequence. */ static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, struct list_head *list, bool power_up) { struct snd_soc_dapm_widget *w; list_for_each_entry(w, list, power_list) if (dapm_seq_compare(new_widget, w, power_up) < 0) { list_add_tail(&new_widget->power_list, &w->power_list); return; } list_add_tail(&new_widget->power_list, list); } static void dapm_seq_check_event(struct snd_soc_card *card, struct snd_soc_dapm_widget *w, int event) { const char *ev_name; int power; switch (event) { case SND_SOC_DAPM_PRE_PMU: ev_name = "PRE_PMU"; power = 1; break; case SND_SOC_DAPM_POST_PMU: ev_name = "POST_PMU"; power = 1; break; case SND_SOC_DAPM_PRE_PMD: ev_name = "PRE_PMD"; power = 0; break; case SND_SOC_DAPM_POST_PMD: ev_name = "POST_PMD"; power = 0; break; case SND_SOC_DAPM_WILL_PMU: ev_name = "WILL_PMU"; power = 1; break; case SND_SOC_DAPM_WILL_PMD: ev_name = "WILL_PMD"; power = 0; break; default: WARN(1, "Unknown event %d\n", event); return; } if (w->new_power != power) return; if (w->event && (w->event_flags & event)) { int ret; pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n", w->name, ev_name); soc_dapm_async_complete(w->dapm); trace_snd_soc_dapm_widget_event_start(w, event); ret = w->event(w, NULL, event); trace_snd_soc_dapm_widget_event_done(w, event); if (ret < 0) dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n", ev_name, w->name, ret); } } /* Apply the coalesced changes from a DAPM sequence */ static void dapm_seq_run_coalesced(struct snd_soc_card *card, struct list_head *pending) { struct snd_soc_dapm_context *dapm; struct snd_soc_dapm_widget *w; int reg; unsigned int value = 0; unsigned int mask = 0; w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list); reg = w->reg; dapm = w->dapm; list_for_each_entry(w, pending, power_list) { WARN_ON(reg != w->reg || dapm != w->dapm); w->power = w->new_power; mask |= w->mask << w->shift; if (w->power) value |= w->on_val << w->shift; else value |= w->off_val << w->shift; pop_dbg(dapm->dev, card->pop_time, "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", w->name, reg, value, mask); /* Check for events */ dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU); dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD); } if (reg >= 0) { /* Any widget will do, they should all be updating the * same register. */ pop_dbg(dapm->dev, card->pop_time, "pop test : Applying 0x%x/0x%x to %x in %dms\n", value, mask, reg, card->pop_time); pop_wait(card->pop_time); soc_dapm_update_bits(dapm, reg, mask, value); } list_for_each_entry(w, pending, power_list) { dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU); dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD); } } /* Apply a DAPM power sequence. * * We walk over a pre-sorted list of widgets to apply power to. In * order to minimise the number of writes to the device required * multiple widgets will be updated in a single write where possible. * Currently anything that requires more than a single write is not * handled. */ static void dapm_seq_run(struct snd_soc_card *card, struct list_head *list, int event, bool power_up) { struct snd_soc_dapm_widget *w, *n; struct snd_soc_dapm_context *d; LIST_HEAD(pending); int cur_sort = -1; int cur_subseq = -1; int cur_reg = SND_SOC_NOPM; struct snd_soc_dapm_context *cur_dapm = NULL; int i; int *sort; if (power_up) sort = dapm_up_seq; else sort = dapm_down_seq; list_for_each_entry_safe(w, n, list, power_list) { int ret = 0; /* Do we need to apply any queued changes? */ if (sort[w->id] != cur_sort || w->reg != cur_reg || w->dapm != cur_dapm || w->subseq != cur_subseq) { if (!list_empty(&pending)) dapm_seq_run_coalesced(card, &pending); if (cur_dapm && cur_dapm->component) { for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) if (sort[i] == cur_sort) snd_soc_component_seq_notifier( cur_dapm->component, i, cur_subseq); } if (cur_dapm && w->dapm != cur_dapm) soc_dapm_async_complete(cur_dapm); INIT_LIST_HEAD(&pending); cur_sort = -1; cur_subseq = INT_MIN; cur_reg = SND_SOC_NOPM; cur_dapm = NULL; } switch (w->id) { case snd_soc_dapm_pre: if (!w->event) continue; if (event == SND_SOC_DAPM_STREAM_START) ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); else if (event == SND_SOC_DAPM_STREAM_STOP) ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); break; case snd_soc_dapm_post: if (!w->event) continue; if (event == SND_SOC_DAPM_STREAM_START) ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMU); else if (event == SND_SOC_DAPM_STREAM_STOP) ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); break; default: /* Queue it up for application */ cur_sort = sort[w->id]; cur_subseq = w->subseq; cur_reg = w->reg; cur_dapm = w->dapm; list_move(&w->power_list, &pending); break; } if (ret < 0) dev_err(w->dapm->dev, "ASoC: Failed to apply widget power: %d\n", ret); } if (!list_empty(&pending)) dapm_seq_run_coalesced(card, &pending); if (cur_dapm && cur_dapm->component) { for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) if (sort[i] == cur_sort) snd_soc_component_seq_notifier( cur_dapm->component, i, cur_subseq); } for_each_card_dapms(card, d) soc_dapm_async_complete(d); } static void dapm_widget_update(struct snd_soc_card *card) { struct snd_soc_dapm_update *update = card->update; struct snd_soc_dapm_widget_list *wlist; struct snd_soc_dapm_widget *w = NULL; unsigned int wi; int ret; if (!update || !dapm_kcontrol_is_powered(update->kcontrol)) return; wlist = dapm_kcontrol_get_wlist(update->kcontrol); for_each_dapm_widgets(wlist, wi, w) { if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) { ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); if (ret != 0) dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n", w->name, ret); } } if (!w) return; ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask, update->val); if (ret < 0) dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n", w->name, ret); if (update->has_second_set) { ret = soc_dapm_update_bits(w->dapm, update->reg2, update->mask2, update->val2); if (ret < 0) dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n", w->name, ret); } for_each_dapm_widgets(wlist, wi, w) { if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) { ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); if (ret != 0) dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n", w->name, ret); } } } /* Async callback run prior to DAPM sequences - brings to _PREPARE if * they're changing state. */ static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) { struct snd_soc_dapm_context *d = data; int ret; /* If we're off and we're not supposed to go into STANDBY */ if (d->bias_level == SND_SOC_BIAS_OFF && d->target_bias_level != SND_SOC_BIAS_OFF) { if (d->dev && cookie) pm_runtime_get_sync(d->dev); ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); if (ret != 0) dev_err(d->dev, "ASoC: Failed to turn on bias: %d\n", ret); } /* Prepare for a transition to ON or away from ON */ if ((d->target_bias_level == SND_SOC_BIAS_ON && d->bias_level != SND_SOC_BIAS_ON) || (d->target_bias_level != SND_SOC_BIAS_ON && d->bias_level == SND_SOC_BIAS_ON)) { ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); if (ret != 0) dev_err(d->dev, "ASoC: Failed to prepare bias: %d\n", ret); } } /* Async callback run prior to DAPM sequences - brings to their final * state. */ static void dapm_post_sequence_async(void *data, async_cookie_t cookie) { struct snd_soc_dapm_context *d = data; int ret; /* If we just powered the last thing off drop to standby bias */ if (d->bias_level == SND_SOC_BIAS_PREPARE && (d->target_bias_level == SND_SOC_BIAS_STANDBY || d->target_bias_level == SND_SOC_BIAS_OFF)) { ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); if (ret != 0) dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n", ret); } /* If we're in standby and can support bias off then do that */ if (d->bias_level == SND_SOC_BIAS_STANDBY && d->target_bias_level == SND_SOC_BIAS_OFF) { ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); if (ret != 0) dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n", ret); if (d->dev && cookie) pm_runtime_put(d->dev); } /* If we just powered up then move to active bias */ if (d->bias_level == SND_SOC_BIAS_PREPARE && d->target_bias_level == SND_SOC_BIAS_ON) { ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); if (ret != 0) dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n", ret); } } static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer, bool power, bool connect) { /* If a connection is being made or broken then that update * will have marked the peer dirty, otherwise the widgets are * not connected and this update has no impact. */ if (!connect) return; /* If the peer is already in the state we're moving to then we * won't have an impact on it. */ if (power != peer->power) dapm_mark_dirty(peer, "peer state change"); } static void dapm_power_one_widget(struct snd_soc_dapm_widget *w, struct list_head *up_list, struct list_head *down_list) { struct snd_soc_dapm_path *path; int power; switch (w->id) { case snd_soc_dapm_pre: power = 0; goto end; case snd_soc_dapm_post: power = 1; goto end; default: break; } power = dapm_widget_power_check(w); if (w->power == power) return; trace_snd_soc_dapm_widget_power(w, power); /* * If we changed our power state perhaps our neigbours * changed also. */ snd_soc_dapm_widget_for_each_source_path(w, path) dapm_widget_set_peer_power(path->source, power, path->connect); /* * Supplies can't affect their outputs, only their inputs */ if (!w->is_supply) snd_soc_dapm_widget_for_each_sink_path(w, path) dapm_widget_set_peer_power(path->sink, power, path->connect); end: if (power) dapm_seq_insert(w, up_list, true); else dapm_seq_insert(w, down_list, false); } static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm) { if (dapm->idle_bias_off) return true; switch (snd_power_get_state(dapm->card->snd_card)) { case SNDRV_CTL_POWER_D3hot: case SNDRV_CTL_POWER_D3cold: return dapm->suspend_bias_off; default: break; } return false; } /* * Scan each dapm widget for complete audio path. * A complete path is a route that has valid endpoints i.e.:- * * o DAC to output pin. * o Input pin to ADC. * o Input pin to Output pin (bypass, sidetone) * o DAC to ADC (loopback). */ static int dapm_power_widgets(struct snd_soc_card *card, int event) { struct snd_soc_dapm_widget *w; struct snd_soc_dapm_context *d; LIST_HEAD(up_list); LIST_HEAD(down_list); ASYNC_DOMAIN_EXCLUSIVE(async_domain); enum snd_soc_bias_level bias; int ret; snd_soc_dapm_mutex_assert_held(card); trace_snd_soc_dapm_start(card); for_each_card_dapms(card, d) { if (dapm_idle_bias_off(d)) d->target_bias_level = SND_SOC_BIAS_OFF; else d->target_bias_level = SND_SOC_BIAS_STANDBY; } dapm_reset(card); /* Check which widgets we need to power and store them in * lists indicating if they should be powered up or down. We * only check widgets that have been flagged as dirty but note * that new widgets may be added to the dirty list while we * iterate. */ list_for_each_entry(w, &card->dapm_dirty, dirty) { dapm_power_one_widget(w, &up_list, &down_list); } for_each_card_widgets(card, w) { switch (w->id) { case snd_soc_dapm_pre: case snd_soc_dapm_post: /* These widgets always need to be powered */ break; default: list_del_init(&w->dirty); break; } if (w->new_power) { d = w->dapm; /* Supplies and micbiases only bring the * context up to STANDBY as unless something * else is active and passing audio they * generally don't require full power. Signal * generators are virtual pins and have no * power impact themselves. */ switch (w->id) { case snd_soc_dapm_siggen: case snd_soc_dapm_vmid: break; case snd_soc_dapm_supply: case snd_soc_dapm_regulator_supply: case snd_soc_dapm_pinctrl: case snd_soc_dapm_clock_supply: case snd_soc_dapm_micbias: if (d->target_bias_level < SND_SOC_BIAS_STANDBY) d->target_bias_level = SND_SOC_BIAS_STANDBY; break; default: d->target_bias_level = SND_SOC_BIAS_ON; break; } } } /* Force all contexts in the card to the same bias state if * they're not ground referenced. */ bias = SND_SOC_BIAS_OFF; for_each_card_dapms(card, d) if (d->target_bias_level > bias) bias = d->target_bias_level; for_each_card_dapms(card, d) if (!dapm_idle_bias_off(d)) d->target_bias_level = bias; trace_snd_soc_dapm_walk_done(card); /* Run card bias changes at first */ dapm_pre_sequence_async(&card->dapm, 0); /* Run other bias changes in parallel */ for_each_card_dapms(card, d) { if (d != &card->dapm && d->bias_level != d->target_bias_level) async_schedule_domain(dapm_pre_sequence_async, d, &async_domain); } async_synchronize_full_domain(&async_domain); list_for_each_entry(w, &down_list, power_list) { dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD); } list_for_each_entry(w, &up_list, power_list) { dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU); } /* Power down widgets first; try to avoid amplifying pops. */ dapm_seq_run(card, &down_list, event, false); dapm_widget_update(card); /* Now power up. */ dapm_seq_run(card, &up_list, event, true); /* Run all the bias changes in parallel */ for_each_card_dapms(card, d) { if (d != &card->dapm && d->bias_level != d->target_bias_level) async_schedule_domain(dapm_post_sequence_async, d, &async_domain); } async_synchronize_full_domain(&async_domain); /* Run card bias changes at last */ dapm_post_sequence_async(&card->dapm, 0); /* do we need to notify any clients that DAPM event is complete */ for_each_card_dapms(card, d) { if (!d->component) continue; ret = snd_soc_component_stream_event(d->component, event); if (ret < 0) return ret; } pop_dbg(card->dev, card->pop_time, "DAPM sequencing finished, waiting %dms\n", card->pop_time); pop_wait(card->pop_time); trace_snd_soc_dapm_done(card); return 0; } #ifdef CONFIG_DEBUG_FS static ssize_t dapm_widget_power_read_file(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct snd_soc_dapm_widget *w = file->private_data; enum snd_soc_dapm_direction dir, rdir; char *buf; int in, out; ssize_t ret; struct snd_soc_dapm_path *p = NULL; buf = kmalloc(PAGE_SIZE, GFP_KERNEL); if (!buf) return -ENOMEM; snd_soc_dapm_mutex_lock_root(w->dapm); /* Supply widgets are not handled by is_connected_{input,output}_ep() */ if (w->is_supply) { in = 0; out = 0; } else { in = is_connected_input_ep(w, NULL, NULL); out = is_connected_output_ep(w, NULL, NULL); } ret = scnprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d", w->name, w->power ? "On" : "Off", w->force ? " (forced)" : "", in, out); if (w->reg >= 0) ret += scnprintf(buf + ret, PAGE_SIZE - ret, " - R%d(0x%x) mask 0x%x", w->reg, w->reg, w->mask << w->shift); ret += scnprintf(buf + ret, PAGE_SIZE - ret, "\n"); if (w->sname) ret += scnprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", w->sname, w->active ? "active" : "inactive"); snd_soc_dapm_for_each_direction(dir) { rdir = SND_SOC_DAPM_DIR_REVERSE(dir); snd_soc_dapm_widget_for_each_path(w, dir, p) { if (p->connected && !p->connected(p->source, p->sink)) continue; if (!p->connect) continue; ret += scnprintf(buf + ret, PAGE_SIZE - ret, " %s \"%s\" \"%s\"\n", (rdir == SND_SOC_DAPM_DIR_IN) ? "in" : "out", p->name ? p->name : "static", p->node[rdir]->name); } } snd_soc_dapm_mutex_unlock(w->dapm); ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); kfree(buf); return ret; } static const struct file_operations dapm_widget_power_fops = { .open = simple_open, .read = dapm_widget_power_read_file, .llseek = default_llseek, }; static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct snd_soc_dapm_context *dapm = file->private_data; char *level; switch (dapm->bias_level) { case SND_SOC_BIAS_ON: level = "On\n"; break; case SND_SOC_BIAS_PREPARE: level = "Prepare\n"; break; case SND_SOC_BIAS_STANDBY: level = "Standby\n"; break; case SND_SOC_BIAS_OFF: level = "Off\n"; break; default: WARN(1, "Unknown bias_level %d\n", dapm->bias_level); level = "Unknown\n"; break; } return simple_read_from_buffer(user_buf, count, ppos, level, strlen(level)); } static const struct file_operations dapm_bias_fops = { .open = simple_open, .read = dapm_bias_read_file, .llseek = default_llseek, }; void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, struct dentry *parent) { if (!parent || IS_ERR(parent)) return; dapm->debugfs_dapm = debugfs_create_dir("dapm", parent); debugfs_create_file("bias_level", 0444, dapm->debugfs_dapm, dapm, &dapm_bias_fops); } static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) { struct snd_soc_dapm_context *dapm = w->dapm; if (!dapm->debugfs_dapm || !w->name) return; debugfs_create_file(w->name, 0444, dapm->debugfs_dapm, w, &dapm_widget_power_fops); } static void dapm_debugfs_free_widget(struct snd_soc_dapm_widget *w) { struct snd_soc_dapm_context *dapm = w->dapm; if (!dapm->debugfs_dapm || !w->name) return; debugfs_lookup_and_remove(w->name, dapm->debugfs_dapm); } 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_free_widget(struct snd_soc_dapm_widget *w) { } static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) { } #endif /* * soc_dapm_connect_path() - Connects or disconnects a path * @path: The path to update * @connect: The new connect state of the path. True if the path is connected, * false if it is disconnected. * @reason: The reason why the path changed (for debugging only) */ static void soc_dapm_connect_path(struct snd_soc_dapm_path *path, bool connect, const char *reason) { if (path->connect == connect) return; path->connect = connect; dapm_mark_dirty(path->source, reason); dapm_mark_dirty(path->sink, reason); dapm_path_invalidate(path); } /* test and update the power status of a mux widget */ static int soc_dapm_mux_update_power(struct snd_soc_card *card, struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e) { struct snd_soc_dapm_path *path; int found = 0; bool connect; snd_soc_dapm_mutex_assert_held(card); /* find dapm widget path assoc with kcontrol */ dapm_kcontrol_for_each_path(path, kcontrol) { found = 1; /* we now need to match the string in the enum to the path */ if (e && !(strcmp(path->name, e->texts[mux]))) connect = true; else connect = false; soc_dapm_connect_path(path, connect, "mux update"); } if (found) dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP); return found; } int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm, struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e, struct snd_soc_dapm_update *update) { struct snd_soc_card *card = dapm->card; int ret; snd_soc_dapm_mutex_lock(card); card->update = update; ret = soc_dapm_mux_update_power(card, kcontrol, mux, e); card->update = NULL; snd_soc_dapm_mutex_unlock(card); if (ret > 0) snd_soc_dpcm_runtime_update(card); return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power); /* test and update the power status of a mixer or switch widget */ static int soc_dapm_mixer_update_power(struct snd_soc_card *card, struct snd_kcontrol *kcontrol, int connect, int rconnect) { struct snd_soc_dapm_path *path; int found = 0; snd_soc_dapm_mutex_assert_held(card); /* find dapm widget path assoc with kcontrol */ dapm_kcontrol_for_each_path(path, kcontrol) { /* * Ideally this function should support any number of * paths and channels. But since kcontrols only come * in mono and stereo variants, we are limited to 2 * channels. * * The following code assumes for stereo controls the * first path (when 'found == 0') is the left channel, * and all remaining paths (when 'found == 1') are the * right channel. * * A stereo control is signified by a valid 'rconnect' * value, either 0 for unconnected, or >= 0 for connected. * This is chosen instead of using snd_soc_volsw_is_stereo, * so that the behavior of snd_soc_dapm_mixer_update_power * doesn't change even when the kcontrol passed in is * stereo. * * It passes 'connect' as the path connect status for * the left channel, and 'rconnect' for the right * channel. */ if (found && rconnect >= 0) soc_dapm_connect_path(path, rconnect, "mixer update"); else soc_dapm_connect_path(path, connect, "mixer update"); found = 1; } if (found) dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP); return found; } int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm, struct snd_kcontrol *kcontrol, int connect, struct snd_soc_dapm_update *update) { struct snd_soc_card *card = dapm->card; int ret; snd_soc_dapm_mutex_lock(card); card->update = update; ret = soc_dapm_mixer_update_power(card, kcontrol, connect, -1); card->update = NULL; snd_soc_dapm_mutex_unlock(card); if (ret > 0) snd_soc_dpcm_runtime_update(card); return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power); static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt, char *buf, int count) { struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt); struct snd_soc_dapm_widget *w; char *state = "not set"; /* card won't be set for the dummy component, as a spot fix * we're checking for that case specifically here but in future * we will ensure that the dummy component looks like others. */ if (!cmpnt->card) return 0; for_each_card_widgets(cmpnt->card, w) { if (w->dapm != dapm) continue; /* only display widgets that burn power */ switch (w->id) { case snd_soc_dapm_hp: case snd_soc_dapm_mic: case snd_soc_dapm_spk: case snd_soc_dapm_line: case snd_soc_dapm_micbias: case snd_soc_dapm_dac: case snd_soc_dapm_adc: case snd_soc_dapm_pga: case snd_soc_dapm_effect: case snd_soc_dapm_out_drv: case snd_soc_dapm_mixer: case snd_soc_dapm_mixer_named_ctl: case snd_soc_dapm_supply: case snd_soc_dapm_regulator_supply: case snd_soc_dapm_pinctrl: case snd_soc_dapm_clock_supply: if (w->name) count += sysfs_emit_at(buf, count, "%s: %s\n", w->name, w->power ? "On":"Off"); break; default: break; } } switch (snd_soc_dapm_get_bias_level(dapm)) { case SND_SOC_BIAS_ON: state = "On"; break; case SND_SOC_BIAS_PREPARE: state = "Prepare"; break; case SND_SOC_BIAS_STANDBY: state = "Standby"; break; case SND_SOC_BIAS_OFF: state = "Off"; break; } count += sysfs_emit_at(buf, count, "PM State: %s\n", state); return count; } /* show dapm widget status in sys fs */ static ssize_t dapm_widget_show(struct device *dev, struct device_attribute *attr, char *buf) { struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); struct snd_soc_dai *codec_dai; int i, count = 0; snd_soc_dapm_mutex_lock_root(rtd->card); for_each_rtd_codec_dais(rtd, i, codec_dai) { struct snd_soc_component *cmpnt = codec_dai->component; count = dapm_widget_show_component(cmpnt, buf, count); } snd_soc_dapm_mutex_unlock(rtd->card); return count; } static DEVICE_ATTR_RO(dapm_widget); struct attribute *soc_dapm_dev_attrs[] = { &dev_attr_dapm_widget.attr, NULL }; static void dapm_free_path(struct snd_soc_dapm_path *path) { list_del(&path->list_node[SND_SOC_DAPM_DIR_IN]); list_del(&path->list_node[SND_SOC_DAPM_DIR_OUT]); list_del(&path->list_kcontrol); list_del(&path->list); kfree(path); } /** * snd_soc_dapm_free_widget - Free specified widget * @w: widget to free * * Removes widget from all paths and frees memory occupied by it. */ void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w) { struct snd_soc_dapm_path *p, *next_p; enum snd_soc_dapm_direction dir; if (!w) return; list_del(&w->list); list_del(&w->dirty); /* * remove source and sink paths associated to this widget. * While removing the path, remove reference to it from both * source and sink widgets so that path is removed only once. */ snd_soc_dapm_for_each_direction(dir) { snd_soc_dapm_widget_for_each_path_safe(w, dir, p, next_p) dapm_free_path(p); } dapm_debugfs_free_widget(w); kfree(w->kcontrols); kfree_const(w->name); kfree_const(w->sname); kfree(w); } EXPORT_SYMBOL_GPL(snd_soc_dapm_free_widget); /* free all dapm widgets and resources */ static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) { struct snd_soc_dapm_widget *w, *next_w; for_each_card_widgets_safe(dapm->card, w, next_w) { if (w->dapm != dapm) continue; snd_soc_dapm_free_widget(w); } dapm->wcache_sink = NULL; dapm->wcache_source = NULL; } static struct snd_soc_dapm_widget *dapm_find_widget( struct snd_soc_dapm_context *dapm, const char *pin, bool search_other_contexts) { struct snd_soc_dapm_widget *w; struct snd_soc_dapm_widget *fallback = NULL; char prefixed_pin[80]; const char *pin_name; const char *prefix = soc_dapm_prefix(dapm); if (prefix) { snprintf(prefixed_pin, sizeof(prefixed_pin), "%s %s", prefix, pin); pin_name = prefixed_pin; } else { pin_name = pin; } for_each_card_widgets(dapm->card, w) { if (!strcmp(w->name, pin_name)) { if (w->dapm == dapm) return w; else fallback = w; } } if (search_other_contexts) return fallback; return NULL; } /* * set the DAPM pin status: * returns 1 when the value has been updated, 0 when unchanged, or a negative * error code; called from kcontrol put callback */ static int __snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, const char *pin, int status) { struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); int ret = 0; dapm_assert_locked(dapm); if (!w) { dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin); return -EINVAL; } if (w->connected != status) { dapm_mark_dirty(w, "pin configuration"); dapm_widget_invalidate_input_paths(w); dapm_widget_invalidate_output_paths(w); ret = 1; } w->connected = status; if (status == 0) w->force = 0; return ret; } /* * similar as __snd_soc_dapm_set_pin(), but returns 0 when successful; * called from several API functions below */ static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, const char *pin, int status) { int ret = __snd_soc_dapm_set_pin(dapm, pin, status); return ret < 0 ? ret : 0; } /** * snd_soc_dapm_sync_unlocked - scan and power dapm paths * @dapm: DAPM context * * Walks all dapm audio paths and powers widgets according to their * stream or path usage. * * Requires external locking. * * Returns 0 for success. */ int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm) { /* * Suppress early reports (eg, jacks syncing their state) to avoid * silly DAPM runs during card startup. */ if (!snd_soc_card_is_instantiated(dapm->card)) return 0; return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP); } EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked); /** * snd_soc_dapm_sync - scan and power dapm paths * @dapm: DAPM context * * Walks all dapm audio paths and powers widgets according to their * stream or path usage. * * Returns 0 for success. */ int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) { int ret; snd_soc_dapm_mutex_lock(dapm); ret = snd_soc_dapm_sync_unlocked(dapm); snd_soc_dapm_mutex_unlock(dapm); return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); static int dapm_update_dai_chan(struct snd_soc_dapm_path *p, struct snd_soc_dapm_widget *w, int channels) { switch (w->id) { case snd_soc_dapm_aif_out: case snd_soc_dapm_aif_in: break; default: return 0; } dev_dbg(w->dapm->dev, "%s DAI route %s -> %s\n", w->channel < channels ? "Connecting" : "Disconnecting", p->source->name, p->sink->name); if (w->channel < channels) soc_dapm_connect_path(p, true, "dai update"); else soc_dapm_connect_path(p, false, "dai update"); return 0; } static int dapm_update_dai_unlocked(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { int dir = substream->stream; int channels = params_channels(params); struct snd_soc_dapm_path *p; struct snd_soc_dapm_widget *w; int ret; w = snd_soc_dai_get_widget(dai, dir); if (!w) return 0; dev_dbg(dai->dev, "Update DAI routes for %s %s\n", dai->name, dir == SNDRV_PCM_STREAM_PLAYBACK ? "playback" : "capture"); snd_soc_dapm_widget_for_each_sink_path(w, p) { ret = dapm_update_dai_chan(p, p->sink, channels); if (ret < 0) return ret; } snd_soc_dapm_widget_for_each_source_path(w, p) { ret = dapm_update_dai_chan(p, p->source, channels); if (ret < 0) return ret; } return 0; } int snd_soc_dapm_update_dai(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); int ret; snd_soc_dapm_mutex_lock(rtd->card); ret = dapm_update_dai_unlocked(substream, params, dai); snd_soc_dapm_mutex_unlock(rtd->card); return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_update_dai); int snd_soc_dapm_widget_name_cmp(struct snd_soc_dapm_widget *widget, const char *s) { struct snd_soc_component *component = snd_soc_dapm_to_component(widget->dapm); const char *wname = widget->name; if (component->name_prefix) wname += strlen(component->name_prefix) + 1; /* plus space */ return strcmp(wname, s); } EXPORT_SYMBOL_GPL(snd_soc_dapm_widget_name_cmp); /* * dapm_update_widget_flags() - Re-compute widget sink and source flags * @w: The widget for which to update the flags * * Some widgets have a dynamic category which depends on which neighbors they * are connected to. This function update the category for these widgets. * * This function must be called whenever a path is added or removed to a widget. */ static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w) { enum snd_soc_dapm_direction dir; struct snd_soc_dapm_path *p; unsigned int ep; switch (w->id) { case snd_soc_dapm_input: /* On a fully routed card an input is never a source */ if (w->dapm->card->fully_routed) return; ep = SND_SOC_DAPM_EP_SOURCE; snd_soc_dapm_widget_for_each_source_path(w, p) { if (p->source->id == snd_soc_dapm_micbias || p->source->id == snd_soc_dapm_mic || p->source->id == snd_soc_dapm_line || p->source->id == snd_soc_dapm_output) { ep = 0; break; } } break; case snd_soc_dapm_output: /* On a fully routed card a output is never a sink */ if (w->dapm->card->fully_routed) return; ep = SND_SOC_DAPM_EP_SINK; snd_soc_dapm_widget_for_each_sink_path(w, p) { if (p->sink->id == snd_soc_dapm_spk || p->sink->id == snd_soc_dapm_hp || p->sink->id == snd_soc_dapm_line || p->sink->id == snd_soc_dapm_input) { ep = 0; break; } } break; case snd_soc_dapm_line: ep = 0; snd_soc_dapm_for_each_direction(dir) { if (!list_empty(&w->edges[dir])) ep |= SND_SOC_DAPM_DIR_TO_EP(dir); } break; default: return; } w->is_ep = ep; } static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context *dapm, struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink, const char *control) { bool dynamic_source = false; bool dynamic_sink = false; if (!control) return 0; switch (source->id) { case snd_soc_dapm_demux: dynamic_source = true; break; default: break; } switch (sink->id) { case snd_soc_dapm_mux: case snd_soc_dapm_switch: case snd_soc_dapm_mixer: case snd_soc_dapm_mixer_named_ctl: dynamic_sink = true; break; default: break; } if (dynamic_source && dynamic_sink) { dev_err(dapm->dev, "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n", source->name, control, sink->name); return -EINVAL; } else if (!dynamic_source && !dynamic_sink) { dev_err(dapm->dev, "Control not supported for path %s -> [%s] -> %s\n", source->name, control, sink->name); return -EINVAL; } return 0; } static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm, struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink, const char *control, int (*connected)(struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink)) { enum snd_soc_dapm_direction dir; struct snd_soc_dapm_path *path; int ret; if (wsink->is_supply && !wsource->is_supply) { dev_err(dapm->dev, "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n", wsource->name, wsink->name); return -EINVAL; } if (connected && !wsource->is_supply) { dev_err(dapm->dev, "connected() callback only supported for supply widgets (%s -> %s)\n", wsource->name, wsink->name); return -EINVAL; } if (wsource->is_supply && control) { dev_err(dapm->dev, "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n", wsource->name, control, wsink->name); return -EINVAL; } ret = snd_soc_dapm_check_dynamic_path(dapm, wsource, wsink, control); if (ret) return ret; path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); if (!path) return -ENOMEM; path->node[SND_SOC_DAPM_DIR_IN] = wsource; path->node[SND_SOC_DAPM_DIR_OUT] = wsink; path->connected = connected; INIT_LIST_HEAD(&path->list); INIT_LIST_HEAD(&path->list_kcontrol); if (wsource->is_supply || wsink->is_supply) path->is_supply = 1; /* connect static paths */ if (control == NULL) { path->connect = 1; } else { switch (wsource->id) { case snd_soc_dapm_demux: ret = dapm_connect_mux(dapm, path, control, wsource); if (ret) goto err; break; default: break; } switch (wsink->id) { case snd_soc_dapm_mux: ret = dapm_connect_mux(dapm, path, control, wsink); if (ret != 0) goto err; break; case snd_soc_dapm_switch: case snd_soc_dapm_mixer: case snd_soc_dapm_mixer_named_ctl: ret = dapm_connect_mixer(dapm, path, control); if (ret != 0) goto err; break; default: break; } } list_add(&path->list, &dapm->card->paths); snd_soc_dapm_for_each_direction(dir) list_add(&path->list_node[dir], &path->node[dir]->edges[dir]); snd_soc_dapm_for_each_direction(dir) { dapm_update_widget_flags(path->node[dir]); dapm_mark_dirty(path->node[dir], "Route added"); } if (snd_soc_card_is_instantiated(dapm->card) && path->connect) dapm_path_invalidate(path); return 0; err: kfree(path); return ret; } static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, const struct snd_soc_dapm_route *route) { struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; const char *sink; const char *source; char prefixed_sink[80]; char prefixed_source[80]; const char *prefix; unsigned int sink_ref = 0; unsigned int source_ref = 0; int ret; prefix = soc_dapm_prefix(dapm); if (prefix) { snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", prefix, route->sink); sink = prefixed_sink; snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", prefix, route->source); source = prefixed_source; } else { sink = route->sink; source = route->source; } wsource = dapm_wcache_lookup(dapm->wcache_source, source); wsink = dapm_wcache_lookup(dapm->wcache_sink, sink); if (wsink && wsource) goto skip_search; /* * find src and dest widgets over all widgets but favor a widget from * current DAPM context */ for_each_card_widgets(dapm->card, w) { if (!wsink && !(strcmp(w->name, sink))) { wtsink = w; if (w->dapm == dapm) { wsink = w; if (wsource) break; } sink_ref++; if (sink_ref > 1) dev_warn(dapm->dev, "ASoC: sink widget %s overwritten\n", w->name); continue; } if (!wsource && !(strcmp(w->name, source))) { wtsource = w; if (w->dapm == dapm) { wsource = w; if (wsink) break; } source_ref++; if (source_ref > 1) dev_warn(dapm->dev, "ASoC: source widget %s overwritten\n", w->name); } } /* use widget from another DAPM context if not found from this */ if (!wsink) wsink = wtsink; if (!wsource) wsource = wtsource; ret = -ENODEV; if (!wsource) goto err; if (!wsink) goto err; skip_search: /* update cache */ dapm->wcache_sink = wsink; dapm->wcache_source = wsource; ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control, route->connected); err: if (ret) dev_err(dapm->dev, "ASoC: Failed to add route %s%s -%s%s%s> %s%s\n", source, !wsource ? "(*)" : "", !route->control ? "" : "> [", !route->control ? "" : route->control, !route->control ? "" : "] -", sink, !wsink ? "(*)" : ""); return ret; } static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm, const struct snd_soc_dapm_route *route) { struct snd_soc_dapm_path *path, *p; const char *sink; const char *source; char prefixed_sink[80]; char prefixed_source[80]; const char *prefix; if (route->control) { dev_err(dapm->dev, "ASoC: Removal of routes with controls not supported\n"); return -EINVAL; } prefix = soc_dapm_prefix(dapm); if (prefix) { snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", prefix, route->sink); sink = prefixed_sink; snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", prefix, route->source); source = prefixed_source; } else { sink = route->sink; source = route->source; } path = NULL; list_for_each_entry(p, &dapm->card->paths, list) { if (strcmp(p->source->name, source) != 0) continue; if (strcmp(p->sink->name, sink) != 0) continue; path = p; break; } if (path) { struct snd_soc_dapm_widget *wsource = path->source; struct snd_soc_dapm_widget *wsink = path->sink; dapm_mark_dirty(wsource, "Route removed"); dapm_mark_dirty(wsink, "Route removed"); if (path->connect) dapm_path_invalidate(path); dapm_free_path(path); /* Update any path related flags */ dapm_update_widget_flags(wsource); dapm_update_widget_flags(wsink); } else { dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n", source, sink); } return 0; } /** * snd_soc_dapm_add_routes - Add routes between DAPM widgets * @dapm: DAPM context * @route: audio routes * @num: number of routes * * Connects 2 dapm widgets together via a named audio path. The sink is * the widget receiving the audio signal, whilst the source is the sender * of the audio signal. * * Returns 0 for success else error. On error all resources can be freed * with a call to snd_soc_card_free(). */ int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, const struct snd_soc_dapm_route *route, int num) { int i, ret = 0; snd_soc_dapm_mutex_lock(dapm); for (i = 0; i < num; i++) { int r = snd_soc_dapm_add_route(dapm, route); if (r < 0) ret = r; route++; } snd_soc_dapm_mutex_unlock(dapm); return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); /** * snd_soc_dapm_del_routes - Remove routes between DAPM widgets * @dapm: DAPM context * @route: audio routes * @num: number of routes * * Removes routes from the DAPM context. */ int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm, const struct snd_soc_dapm_route *route, int num) { int i; snd_soc_dapm_mutex_lock(dapm); for (i = 0; i < num; i++) { snd_soc_dapm_del_route(dapm, route); route++; } snd_soc_dapm_mutex_unlock(dapm); return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes); static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm, const struct snd_soc_dapm_route *route) { struct snd_soc_dapm_widget *source = dapm_find_widget(dapm, route->source, true); struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm, route->sink, true); struct snd_soc_dapm_path *path; int count = 0; if (!source) { dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n", route->source); return -ENODEV; } if (!sink) { dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n", route->sink); return -ENODEV; } if (route->control || route->connected) dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n", route->source, route->sink); snd_soc_dapm_widget_for_each_sink_path(source, path) { if (path->sink == sink) { path->weak = 1; count++; } } if (count == 0) dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n", route->source, route->sink); if (count > 1) dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n", count, route->source, route->sink); return 0; } /** * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak * @dapm: DAPM context * @route: audio routes * @num: number of routes * * Mark existing routes matching those specified in the passed array * as being weak, meaning that they are ignored for the purpose of * power decisions. The main intended use case is for sidetone paths * which couple audio between other independent paths if they are both * active in order to make the combination work better at the user * level but which aren't intended to be "used". * * Note that CODEC drivers should not use this as sidetone type paths * can frequently also be used as bypass paths. */ int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm, const struct snd_soc_dapm_route *route, int num) { int i; int ret = 0; snd_soc_dapm_mutex_lock_root(dapm); for (i = 0; i < num; i++) { int err = snd_soc_dapm_weak_route(dapm, route); if (err) ret = err; route++; } snd_soc_dapm_mutex_unlock(dapm); return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes); /** * snd_soc_dapm_new_widgets - add new dapm widgets * @card: card to be checked for new dapm widgets * * Checks the codec for any new dapm widgets and creates them if found. * * Returns 0 for success. */ int snd_soc_dapm_new_widgets(struct snd_soc_card *card) { struct snd_soc_dapm_widget *w; unsigned int val; snd_soc_dapm_mutex_lock_root(card); for_each_card_widgets(card, w) { if (w->new) continue; if (w->num_kcontrols) { w->kcontrols = kcalloc(w->num_kcontrols, sizeof(struct snd_kcontrol *), GFP_KERNEL); if (!w->kcontrols) { snd_soc_dapm_mutex_unlock(card); return -ENOMEM; } } switch(w->id) { case snd_soc_dapm_switch: case snd_soc_dapm_mixer: case snd_soc_dapm_mixer_named_ctl: dapm_new_mixer(w); break; case snd_soc_dapm_mux: case snd_soc_dapm_demux: dapm_new_mux(w); break; case snd_soc_dapm_pga: case snd_soc_dapm_effect: case snd_soc_dapm_out_drv: dapm_new_pga(w); break; case snd_soc_dapm_dai_link: dapm_new_dai_link(w); break; default: break; } /* Read the initial power state from the device */ if (w->reg >= 0) { val = soc_dapm_read(w->dapm, w->reg); val = val >> w->shift; val &= w->mask; if (val == w->on_val) w->power = 1; } w->new = 1; dapm_mark_dirty(w, "new widget"); dapm_debugfs_add_widget(w); } dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP); snd_soc_dapm_mutex_unlock(card); return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); /** * snd_soc_dapm_get_volsw - dapm mixer get callback * @kcontrol: mixer control * @ucontrol: control element information * * Callback to get the value of a dapm mixer control. * * Returns 0 for success. */ int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol); struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; int reg = mc->reg; unsigned int shift = mc->shift; int max = mc->max; unsigned int width = fls(max); unsigned int mask = (1 << fls(max)) - 1; unsigned int invert = mc->invert; unsigned int reg_val, val, rval = 0; snd_soc_dapm_mutex_lock(dapm); if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) { reg_val = soc_dapm_read(dapm, reg); val = (reg_val >> shift) & mask; if (reg != mc->rreg) reg_val = soc_dapm_read(dapm, mc->rreg); if (snd_soc_volsw_is_stereo(mc)) rval = (reg_val >> mc->rshift) & mask; } else { reg_val = dapm_kcontrol_get_value(kcontrol); val = reg_val & mask; if (snd_soc_volsw_is_stereo(mc)) rval = (reg_val >> width) & mask; } snd_soc_dapm_mutex_unlock(dapm); if (invert) ucontrol->value.integer.value[0] = max - val; else ucontrol->value.integer.value[0] = val; if (snd_soc_volsw_is_stereo(mc)) { if (invert) ucontrol->value.integer.value[1] = max - rval; else ucontrol->value.integer.value[1] = rval; } return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); /** * snd_soc_dapm_put_volsw - dapm mixer set callback * @kcontrol: mixer control * @ucontrol: control element information * * Callback to set the value of a dapm mixer control. * * Returns 0 for success. */ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol); struct snd_soc_card *card = dapm->card; struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; int reg = mc->reg; unsigned int shift = mc->shift; int max = mc->max; unsigned int width = fls(max); unsigned int mask = (1 << width) - 1; unsigned int invert = mc->invert; unsigned int val, rval = 0; int connect, rconnect = -1, change, reg_change = 0; struct snd_soc_dapm_update update = {}; int ret = 0; val = (ucontrol->value.integer.value[0] & mask); connect = !!val; if (invert) val = max - val; if (snd_soc_volsw_is_stereo(mc)) { rval = (ucontrol->value.integer.value[1] & mask); rconnect = !!rval; if (invert) rval = max - rval; } snd_soc_dapm_mutex_lock(card); /* This assumes field width < (bits in unsigned int / 2) */ if (width > sizeof(unsigned int) * 8 / 2) dev_warn(dapm->dev, "ASoC: control %s field width limit exceeded\n", kcontrol->id.name); change = dapm_kcontrol_set_value(kcontrol, val | (rval << width)); if (reg != SND_SOC_NOPM) { val = val << shift; rval = rval << mc->rshift; reg_change = soc_dapm_test_bits(dapm, reg, mask << shift, val); if (snd_soc_volsw_is_stereo(mc)) reg_change |= soc_dapm_test_bits(dapm, mc->rreg, mask << mc->rshift, rval); } if (change || reg_change) { if (reg_change) { if (snd_soc_volsw_is_stereo(mc)) { update.has_second_set = true; update.reg2 = mc->rreg; update.mask2 = mask << mc->rshift; update.val2 = rval; } update.kcontrol = kcontrol; update.reg = reg; update.mask = mask << shift; update.val = val; card->update = &update; } ret = soc_dapm_mixer_update_power(card, kcontrol, connect, rconnect); card->update = NULL; } snd_soc_dapm_mutex_unlock(card); if (ret > 0) snd_soc_dpcm_runtime_update(card); return change; } EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); /** * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback * @kcontrol: mixer control * @ucontrol: control element information * * Callback to get the value of a dapm enumerated double mixer control. * * Returns 0 for success. */ int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol); struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned int reg_val, val; snd_soc_dapm_mutex_lock(dapm); if (e->reg != SND_SOC_NOPM && dapm_kcontrol_is_powered(kcontrol)) { reg_val = soc_dapm_read(dapm, e->reg); } else { reg_val = dapm_kcontrol_get_value(kcontrol); } snd_soc_dapm_mutex_unlock(dapm); val = (reg_val >> e->shift_l) & e->mask; ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val); if (e->shift_l != e->shift_r) { val = (reg_val >> e->shift_r) & e->mask; val = snd_soc_enum_val_to_item(e, val); ucontrol->value.enumerated.item[1] = val; } return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); /** * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback * @kcontrol: mixer control * @ucontrol: control element information * * Callback to set the value of a dapm enumerated double mixer control. * * Returns 0 for success. */ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol); struct snd_soc_card *card = dapm->card; struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned int *item = ucontrol->value.enumerated.item; unsigned int val, change, reg_change = 0; unsigned int mask; struct snd_soc_dapm_update update = {}; int ret = 0; if (item[0] >= e->items) return -EINVAL; val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l; mask = e->mask << e->shift_l; if (e->shift_l != e->shift_r) { if (item[1] > e->items) return -EINVAL; val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r; mask |= e->mask << e->shift_r; } snd_soc_dapm_mutex_lock(card); change = dapm_kcontrol_set_value(kcontrol, val); if (e->reg != SND_SOC_NOPM) reg_change = soc_dapm_test_bits(dapm, e->reg, mask, val); if (change || reg_change) { if (reg_change) { update.kcontrol = kcontrol; update.reg = e->reg; update.mask = mask; update.val = val; card->update = &update; } ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e); card->update = NULL; } snd_soc_dapm_mutex_unlock(card); if (ret > 0) snd_soc_dpcm_runtime_update(card); return change; } EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); /** * snd_soc_dapm_info_pin_switch - Info for a pin switch * * @kcontrol: mixer control * @uinfo: control element information * * Callback to provide information about a pin switch control. */ int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; uinfo->count = 1; uinfo->value.integer.min = 0; uinfo->value.integer.max = 1; return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); /** * snd_soc_dapm_get_pin_switch - Get information for a pin switch * * @kcontrol: mixer control * @ucontrol: Value */ int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); const char *pin = (const char *)kcontrol->private_value; snd_soc_dapm_mutex_lock(card); ucontrol->value.integer.value[0] = snd_soc_dapm_get_pin_status(&card->dapm, pin); snd_soc_dapm_mutex_unlock(card); return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); /** * snd_soc_dapm_put_pin_switch - Set information for a pin switch * * @kcontrol: mixer control * @ucontrol: Value */ int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); const char *pin = (const char *)kcontrol->private_value; int ret; snd_soc_dapm_mutex_lock(card); ret = __snd_soc_dapm_set_pin(&card->dapm, pin, !!ucontrol->value.integer.value[0]); snd_soc_dapm_mutex_unlock(card); snd_soc_dapm_sync(&card->dapm); return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); struct snd_soc_dapm_widget * snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm, const struct snd_soc_dapm_widget *widget) { enum snd_soc_dapm_direction dir; struct snd_soc_dapm_widget *w; const char *prefix; int ret = -ENOMEM; if ((w = dapm_cnew_widget(widget)) == NULL) goto cnew_failed; prefix = soc_dapm_prefix(dapm); if (prefix) w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name); else w->name = kstrdup_const(widget->name, GFP_KERNEL); if (!w->name) goto name_failed; switch (w->id) { case snd_soc_dapm_regulator_supply: w->regulator = devm_regulator_get(dapm->dev, widget->name); if (IS_ERR(w->regulator)) { ret = PTR_ERR(w->regulator); goto request_failed; } if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) { ret = regulator_allow_bypass(w->regulator, true); if (ret != 0) dev_warn(dapm->dev, "ASoC: Failed to bypass %s: %d\n", w->name, ret); } break; case snd_soc_dapm_pinctrl: w->pinctrl = devm_pinctrl_get(dapm->dev); if (IS_ERR(w->pinctrl)) { ret = PTR_ERR(w->pinctrl); goto request_failed; } /* set to sleep_state when initializing */ dapm_pinctrl_event(w, NULL, SND_SOC_DAPM_POST_PMD); break; case snd_soc_dapm_clock_supply: w->clk = devm_clk_get(dapm->dev, widget->name); if (IS_ERR(w->clk)) { ret = PTR_ERR(w->clk); goto request_failed; } break; default: break; } switch (w->id) { case snd_soc_dapm_mic: w->is_ep = SND_SOC_DAPM_EP_SOURCE; w->power_check = dapm_generic_check_power; break; case snd_soc_dapm_input: if (!dapm->card->fully_routed) w->is_ep = SND_SOC_DAPM_EP_SOURCE; w->power_check = dapm_generic_check_power; break; case snd_soc_dapm_spk: case snd_soc_dapm_hp: w->is_ep = SND_SOC_DAPM_EP_SINK; w->power_check = dapm_generic_check_power; break; case snd_soc_dapm_output: if (!dapm->card->fully_routed) w->is_ep = SND_SOC_DAPM_EP_SINK; w->power_check = dapm_generic_check_power; break; case snd_soc_dapm_vmid: case snd_soc_dapm_siggen: w->is_ep = SND_SOC_DAPM_EP_SOURCE; w->power_check = dapm_always_on_check_power; break; case snd_soc_dapm_sink: w->is_ep = SND_SOC_DAPM_EP_SINK; w->power_check = dapm_always_on_check_power; break; case snd_soc_dapm_mux: case snd_soc_dapm_demux: case snd_soc_dapm_switch: case snd_soc_dapm_mixer: case snd_soc_dapm_mixer_named_ctl: case snd_soc_dapm_adc: case snd_soc_dapm_aif_out: case snd_soc_dapm_dac: case snd_soc_dapm_aif_in: case snd_soc_dapm_pga: case snd_soc_dapm_buffer: case snd_soc_dapm_scheduler: case snd_soc_dapm_effect: case snd_soc_dapm_src: case snd_soc_dapm_asrc: case snd_soc_dapm_encoder: case snd_soc_dapm_decoder: case snd_soc_dapm_out_drv: case snd_soc_dapm_micbias: case snd_soc_dapm_line: case snd_soc_dapm_dai_link: case snd_soc_dapm_dai_out: case snd_soc_dapm_dai_in: w->power_check = dapm_generic_check_power; break; case snd_soc_dapm_supply: case snd_soc_dapm_regulator_supply: case snd_soc_dapm_pinctrl: case snd_soc_dapm_clock_supply: case snd_soc_dapm_kcontrol: w->is_supply = 1; w->power_check = dapm_supply_check_power; break; default: w->power_check = dapm_always_on_check_power; break; } w->dapm = dapm; INIT_LIST_HEAD(&w->list); INIT_LIST_HEAD(&w->dirty); /* see for_each_card_widgets */ list_add_tail(&w->list, &dapm->card->widgets); snd_soc_dapm_for_each_direction(dir) { INIT_LIST_HEAD(&w->edges[dir]); w->endpoints[dir] = -1; } /* machine layer sets up unconnected pins and insertions */ w->connected = 1; return w; request_failed: dev_err_probe(dapm->dev, ret, "ASoC: Failed to request %s\n", w->name); kfree_const(w->name); name_failed: kfree_const(w->sname); kfree(w); cnew_failed: return ERR_PTR(ret); } /** * snd_soc_dapm_new_control - create new dapm control * @dapm: DAPM context * @widget: widget template * * Creates new DAPM control based upon a template. * * Returns a widget pointer on success or an error pointer on failure */ struct snd_soc_dapm_widget * snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, const struct snd_soc_dapm_widget *widget) { struct snd_soc_dapm_widget *w; snd_soc_dapm_mutex_lock(dapm); w = snd_soc_dapm_new_control_unlocked(dapm, widget); snd_soc_dapm_mutex_unlock(dapm); return w; } EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); /** * snd_soc_dapm_new_controls - create new dapm controls * @dapm: DAPM context * @widget: widget array * @num: number of widgets * * Creates new DAPM controls based upon the templates. * * Returns 0 for success else error. */ int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, const struct snd_soc_dapm_widget *widget, int num) { int i; int ret = 0; snd_soc_dapm_mutex_lock_root(dapm); for (i = 0; i < num; i++) { struct snd_soc_dapm_widget *w = snd_soc_dapm_new_control_unlocked(dapm, widget); if (IS_ERR(w)) { ret = PTR_ERR(w); break; } widget++; } snd_soc_dapm_mutex_unlock(dapm); return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); static int snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget *w, struct snd_pcm_substream *substream) { struct snd_soc_dapm_path *path; struct snd_soc_dai *source, *sink; struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); struct snd_pcm_hw_params *params = NULL; const struct snd_soc_pcm_stream *config = NULL; struct snd_pcm_runtime *runtime = NULL; unsigned int fmt; int ret = 0; /* * NOTE * * snd_pcm_hw_params is quite large (608 bytes on arm64) and is * starting to get a bit excessive for allocation on the stack, * especially when you're building with some of the KASAN type * stuff that increases stack usage. * So, we use kzalloc()/kfree() for params in this function. */ params = kzalloc(sizeof(*params), GFP_KERNEL); if (!params) return -ENOMEM; runtime = kzalloc(sizeof(*runtime), GFP_KERNEL); if (!runtime) { ret = -ENOMEM; goto out; } substream->runtime = runtime; substream->stream = SNDRV_PCM_STREAM_CAPTURE; snd_soc_dapm_widget_for_each_source_path(w, path) { source = path->source->priv; ret = snd_soc_dai_startup(source, substream); if (ret < 0) goto out; snd_soc_dai_activate(source, substream->stream); } substream->stream = SNDRV_PCM_STREAM_PLAYBACK; snd_soc_dapm_widget_for_each_sink_path(w, path) { sink = path->sink->priv; ret = snd_soc_dai_startup(sink, substream); if (ret < 0) goto out; snd_soc_dai_activate(sink, substream->stream); } substream->hw_opened = 1; /* * Note: getting the config after .startup() gives a chance to * either party on the link to alter the configuration if * necessary */ config = rtd->dai_link->c2c_params + rtd->c2c_params_select; if (!config) { dev_err(w->dapm->dev, "ASoC: link config missing\n"); ret = -EINVAL; goto out; } /* Be a little careful as we don't want to overflow the mask array */ if (!config->formats) { dev_warn(w->dapm->dev, "ASoC: Invalid format was specified\n"); ret = -EINVAL; goto out; } fmt = ffs(config->formats) - 1; snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt); hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min = config->rate_min; hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max = config->rate_max; hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min = config->channels_min; hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max = config->channels_max; substream->stream = SNDRV_PCM_STREAM_CAPTURE; snd_soc_dapm_widget_for_each_source_path(w, path) { source = path->source->priv; ret = snd_soc_dai_hw_params(source, substream, params); if (ret < 0) goto out; dapm_update_dai_unlocked(substream, params, source); } substream->stream = SNDRV_PCM_STREAM_PLAYBACK; snd_soc_dapm_widget_for_each_sink_path(w, path) { sink = path->sink->priv; ret = snd_soc_dai_hw_params(sink, substream, params); if (ret < 0) goto out; dapm_update_dai_unlocked(substream, params, sink); } runtime->format = params_format(params); runtime->subformat = params_subformat(params); runtime->channels = params_channels(params); runtime->rate = params_rate(params); out: /* see above NOTE */ kfree(params); return ret; } static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_dapm_path *path; struct snd_soc_dai *source, *sink; struct snd_pcm_substream *substream = w->priv; int ret = 0, saved_stream = substream->stream; if (WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) || list_empty(&w->edges[SND_SOC_DAPM_DIR_IN]))) return -EINVAL; switch (event) { case SND_SOC_DAPM_PRE_PMU: ret = snd_soc_dai_link_event_pre_pmu(w, substream); if (ret < 0) goto out; break; case SND_SOC_DAPM_POST_PMU: snd_soc_dapm_widget_for_each_sink_path(w, path) { sink = path->sink->priv; snd_soc_dai_digital_mute(sink, 0, SNDRV_PCM_STREAM_PLAYBACK); ret = 0; } break; case SND_SOC_DAPM_PRE_PMD: snd_soc_dapm_widget_for_each_sink_path(w, path) { sink = path->sink->priv; snd_soc_dai_digital_mute(sink, 1, SNDRV_PCM_STREAM_PLAYBACK); ret = 0; } substream->stream = SNDRV_PCM_STREAM_CAPTURE; snd_soc_dapm_widget_for_each_source_path(w, path) { source = path->source->priv; snd_soc_dai_hw_free(source, substream, 0); } substream->stream = SNDRV_PCM_STREAM_PLAYBACK; snd_soc_dapm_widget_for_each_sink_path(w, path) { sink = path->sink->priv; snd_soc_dai_hw_free(sink, substream, 0); } substream->stream = SNDRV_PCM_STREAM_CAPTURE; snd_soc_dapm_widget_for_each_source_path(w, path) { source = path->source->priv; snd_soc_dai_deactivate(source, substream->stream); snd_soc_dai_shutdown(source, substream, 0); } substream->stream = SNDRV_PCM_STREAM_PLAYBACK; snd_soc_dapm_widget_for_each_sink_path(w, path) { sink = path->sink->priv; snd_soc_dai_deactivate(sink, substream->stream); snd_soc_dai_shutdown(sink, substream, 0); } break; case SND_SOC_DAPM_POST_PMD: kfree(substream->runtime); break; default: WARN(1, "Unknown event %d\n", event); ret = -EINVAL; } out: /* Restore the substream direction */ substream->stream = saved_stream; return ret; } static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol); struct snd_soc_pcm_runtime *rtd = w->priv; ucontrol->value.enumerated.item[0] = rtd->c2c_params_select; return 0; } static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol); struct snd_soc_pcm_runtime *rtd = w->priv; /* Can't change the config when widget is already powered */ if (w->power) return -EBUSY; if (ucontrol->value.enumerated.item[0] == rtd->c2c_params_select) return 0; if (ucontrol->value.enumerated.item[0] >= rtd->dai_link->num_c2c_params) return -EINVAL; rtd->c2c_params_select = ucontrol->value.enumerated.item[0]; return 1; } static void snd_soc_dapm_free_kcontrol(struct snd_soc_card *card, unsigned long *private_value, int num_c2c_params, const char **w_param_text) { int count; devm_kfree(card->dev, (void *)*private_value); if (!w_param_text) return; for (count = 0 ; count < num_c2c_params; count++) devm_kfree(card->dev, (void *)w_param_text[count]); devm_kfree(card->dev, w_param_text); } static struct snd_kcontrol_new * snd_soc_dapm_alloc_kcontrol(struct snd_soc_card *card, char *link_name, const struct snd_soc_pcm_stream *c2c_params, int num_c2c_params, const char **w_param_text, unsigned long *private_value) { struct soc_enum w_param_enum[] = { SOC_ENUM_SINGLE(0, 0, 0, NULL), }; struct snd_kcontrol_new kcontrol_dai_link[] = { SOC_ENUM_EXT(NULL, w_param_enum[0], snd_soc_dapm_dai_link_get, snd_soc_dapm_dai_link_put), }; struct snd_kcontrol_new *kcontrol_news; const struct snd_soc_pcm_stream *config = c2c_params; int count; for (count = 0 ; count < num_c2c_params; count++) { if (!config->stream_name) { dev_warn(card->dapm.dev, "ASoC: anonymous config %d for dai link %s\n", count, link_name); w_param_text[count] = devm_kasprintf(card->dev, GFP_KERNEL, "Anonymous Configuration %d", count); } else { w_param_text[count] = devm_kmemdup(card->dev, config->stream_name, strlen(config->stream_name) + 1, GFP_KERNEL); } if (!w_param_text[count]) goto outfree_w_param; config++; } w_param_enum[0].items = num_c2c_params; w_param_enum[0].texts = w_param_text; *private_value = (unsigned long) devm_kmemdup(card->dev, (void *)(kcontrol_dai_link[0].private_value), sizeof(struct soc_enum), GFP_KERNEL); if (!*private_value) { dev_err(card->dev, "ASoC: Failed to create control for %s widget\n", link_name); goto outfree_w_param; } kcontrol_dai_link[0].private_value = *private_value; /* duplicate kcontrol_dai_link on heap so that memory persists */ kcontrol_news = devm_kmemdup(card->dev, &kcontrol_dai_link[0], sizeof(struct snd_kcontrol_new), GFP_KERNEL); if (!kcontrol_news) { dev_err(card->dev, "ASoC: Failed to create control for %s widget\n", link_name); goto outfree_w_param; } return kcontrol_news; outfree_w_param: snd_soc_dapm_free_kcontrol(card, private_value, num_c2c_params, w_param_text); return NULL; } static struct snd_soc_dapm_widget * snd_soc_dapm_new_dai(struct snd_soc_card *card, struct snd_pcm_substream *substream, char *id) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); struct snd_soc_dapm_widget template; struct snd_soc_dapm_widget *w; const struct snd_kcontrol_new *kcontrol_news; int num_kcontrols; const char **w_param_text; unsigned long private_value = 0; char *link_name; int ret = -ENOMEM; link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s", rtd->dai_link->name, id); if (!link_name) goto name_fail; /* allocate memory for control, only in case of multiple configs */ w_param_text = NULL; kcontrol_news = NULL; num_kcontrols = 0; if (rtd->dai_link->num_c2c_params > 1) { w_param_text = devm_kcalloc(card->dev, rtd->dai_link->num_c2c_params, sizeof(char *), GFP_KERNEL); if (!w_param_text) goto param_fail; num_kcontrols = 1; kcontrol_news = snd_soc_dapm_alloc_kcontrol(card, link_name, rtd->dai_link->c2c_params, rtd->dai_link->num_c2c_params, w_param_text, &private_value); if (!kcontrol_news) goto param_fail; } memset(&template, 0, sizeof(template)); template.reg = SND_SOC_NOPM; template.id = snd_soc_dapm_dai_link; template.name = link_name; template.event = snd_soc_dai_link_event; template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD; template.kcontrol_news = kcontrol_news; template.num_kcontrols = num_kcontrols; dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name); w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template); if (IS_ERR(w)) { ret = PTR_ERR(w); goto outfree_kcontrol_news; } w->priv = substream; return w; outfree_kcontrol_news: devm_kfree(card->dev, (void *)template.kcontrol_news); snd_soc_dapm_free_kcontrol(card, &private_value, rtd->dai_link->num_c2c_params, w_param_text); param_fail: devm_kfree(card->dev, link_name); name_fail: dev_err(rtd->dev, "ASoC: Failed to create %s-%s widget: %d\n", rtd->dai_link->name, id, ret); return ERR_PTR(ret); } /** * snd_soc_dapm_new_dai_widgets - Create new DAPM widgets * @dapm: DAPM context * @dai: parent DAI * * Returns 0 on success, error code otherwise. */ int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm, struct snd_soc_dai *dai) { struct snd_soc_dapm_widget template; struct snd_soc_dapm_widget *w; WARN_ON(dapm->dev != dai->dev); memset(&template, 0, sizeof(template)); template.reg = SND_SOC_NOPM; if (dai->driver->playback.stream_name) { template.id = snd_soc_dapm_dai_in; template.name = dai->driver->playback.stream_name; template.sname = dai->driver->playback.stream_name; dev_dbg(dai->dev, "ASoC: adding %s widget\n", template.name); w = snd_soc_dapm_new_control_unlocked(dapm, &template); if (IS_ERR(w)) return PTR_ERR(w); w->priv = dai; snd_soc_dai_set_widget_playback(dai, w); } if (dai->driver->capture.stream_name) { template.id = snd_soc_dapm_dai_out; template.name = dai->driver->capture.stream_name; template.sname = dai->driver->capture.stream_name; dev_dbg(dai->dev, "ASoC: adding %s widget\n", template.name); w = snd_soc_dapm_new_control_unlocked(dapm, &template); if (IS_ERR(w)) return PTR_ERR(w); w->priv = dai; snd_soc_dai_set_widget_capture(dai, w); } return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_new_dai_widgets); int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card) { struct snd_soc_dapm_widget *dai_w, *w; struct snd_soc_dapm_widget *src, *sink; struct snd_soc_dai *dai; /* For each DAI widget... */ for_each_card_widgets(card, dai_w) { switch (dai_w->id) { case snd_soc_dapm_dai_in: case snd_soc_dapm_dai_out: break; default: continue; } /* let users know there is no DAI to link */ if (!dai_w->priv) { dev_dbg(card->dev, "dai widget %s has no DAI\n", dai_w->name); continue; } dai = dai_w->priv; /* ...find all widgets with the same stream and link them */ for_each_card_widgets(card, w) { if (w->dapm != dai_w->dapm) continue; switch (w->id) { case snd_soc_dapm_dai_in: case snd_soc_dapm_dai_out: continue; default: break; } if (!w->sname || !strstr(w->sname, dai_w->sname)) continue; if (dai_w->id == snd_soc_dapm_dai_in) { src = dai_w; sink = w; } else { src = w; sink = dai_w; } dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name); snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL); } } return 0; } static void dapm_connect_dai_routes(struct snd_soc_dapm_context *dapm, struct snd_soc_dai *src_dai, struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dai, struct snd_soc_dai *sink_dai, struct snd_soc_dapm_widget *sink) { dev_dbg(dapm->dev, "connected DAI link %s:%s -> %s:%s\n", src_dai->component->name, src->name, sink_dai->component->name, sink->name); if (dai) { snd_soc_dapm_add_path(dapm, src, dai, NULL, NULL); src = dai; } snd_soc_dapm_add_path(dapm, src, sink, NULL, NULL); } static void dapm_connect_dai_pair(struct snd_soc_card *card, struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *codec_dai, struct snd_soc_dai *cpu_dai) { struct snd_soc_dai_link *dai_link = rtd->dai_link; struct snd_soc_dapm_widget *codec, *cpu; struct snd_soc_dai *src_dai[] = { cpu_dai, codec_dai }; struct snd_soc_dai *sink_dai[] = { codec_dai, cpu_dai }; struct snd_soc_dapm_widget **src[] = { &cpu, &codec }; struct snd_soc_dapm_widget **sink[] = { &codec, &cpu }; char *widget_name[] = { "playback", "capture" }; int stream; for_each_pcm_streams(stream) { int stream_cpu, stream_codec; stream_cpu = snd_soc_get_stream_cpu(dai_link, stream); stream_codec = stream; /* connect BE DAI playback if widgets are valid */ cpu = snd_soc_dai_get_widget(cpu_dai, stream_cpu); codec = snd_soc_dai_get_widget(codec_dai, stream_codec); if (!cpu || !codec) continue; /* special handling for [Codec2Codec] */ if (dai_link->c2c_params && !rtd->c2c_widget[stream]) { struct snd_pcm_substream *substream = rtd->pcm->streams[stream].substream; struct snd_soc_dapm_widget *dai = snd_soc_dapm_new_dai(card, substream, widget_name[stream]); if (IS_ERR(dai)) continue; rtd->c2c_widget[stream] = dai; } dapm_connect_dai_routes(&card->dapm, src_dai[stream], *src[stream], rtd->c2c_widget[stream], sink_dai[stream], *sink[stream]); } } static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream, int event) { struct snd_soc_dapm_widget *w; w = snd_soc_dai_get_widget(dai, stream); if (w) { unsigned int ep; dapm_mark_dirty(w, "stream event"); if (w->id == snd_soc_dapm_dai_in) { ep = SND_SOC_DAPM_EP_SOURCE; dapm_widget_invalidate_input_paths(w); } else { ep = SND_SOC_DAPM_EP_SINK; dapm_widget_invalidate_output_paths(w); } switch (event) { case SND_SOC_DAPM_STREAM_START: w->active = 1; w->is_ep = ep; break; case SND_SOC_DAPM_STREAM_STOP: w->active = 0; w->is_ep = 0; break; case SND_SOC_DAPM_STREAM_SUSPEND: case SND_SOC_DAPM_STREAM_RESUME: case SND_SOC_DAPM_STREAM_PAUSE_PUSH: case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: break; } } } void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card) { struct snd_soc_pcm_runtime *rtd; struct snd_soc_dai *codec_dai; int i; /* for each BE DAI link... */ for_each_card_rtds(card, rtd) { /* * dynamic FE links have no fixed DAI mapping. * CODEC<->CODEC links have no direct connection. */ if (rtd->dai_link->dynamic) continue; if (rtd->dai_link->num_cpus == 1) { for_each_rtd_codec_dais(rtd, i, codec_dai) dapm_connect_dai_pair(card, rtd, codec_dai, snd_soc_rtd_to_cpu(rtd, 0)); } else if (rtd->dai_link->num_codecs == rtd->dai_link->num_cpus) { for_each_rtd_codec_dais(rtd, i, codec_dai) dapm_connect_dai_pair(card, rtd, codec_dai, snd_soc_rtd_to_cpu(rtd, i)); } else if (rtd->dai_link->num_codecs > rtd->dai_link->num_cpus) { int cpu_id; if (!rtd->dai_link->codec_ch_maps) { dev_err(card->dev, "%s: no codec channel mapping table provided\n", __func__); continue; } for_each_rtd_codec_dais(rtd, i, codec_dai) { cpu_id = rtd->dai_link->codec_ch_maps[i].connected_cpu_id; if (cpu_id >= rtd->dai_link->num_cpus) { dev_err(card->dev, "%s: dai_link %s cpu_id %d too large, num_cpus is %d\n", __func__, rtd->dai_link->name, cpu_id, rtd->dai_link->num_cpus); continue; } dapm_connect_dai_pair(card, rtd, codec_dai, snd_soc_rtd_to_cpu(rtd, cpu_id)); } } else { dev_err(card->dev, "%s: codec number %d < cpu number %d is not supported\n", __func__, rtd->dai_link->num_codecs, rtd->dai_link->num_cpus); } } } static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream, int event) { struct snd_soc_dai *dai; int i; for_each_rtd_dais(rtd, i, dai) soc_dapm_dai_stream_event(dai, stream, event); dapm_power_widgets(rtd->card, event); } /** * snd_soc_dapm_stream_event - send a stream event to the dapm core * @rtd: PCM runtime data * @stream: stream name * @event: stream event * * Sends a stream event to the dapm core. The core then makes any * necessary widget power changes. * * Returns 0 for success else error. */ void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream, int event) { struct snd_soc_card *card = rtd->card; snd_soc_dapm_mutex_lock(card); soc_dapm_stream_event(rtd, stream, event); snd_soc_dapm_mutex_unlock(card); } void snd_soc_dapm_stream_stop(struct snd_soc_pcm_runtime *rtd, int stream) { if (stream == SNDRV_PCM_STREAM_PLAYBACK) { if (snd_soc_runtime_ignore_pmdown_time(rtd)) { /* powered down playback stream now */ snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, SND_SOC_DAPM_STREAM_STOP); } else { /* start delayed pop wq here for playback streams */ rtd->pop_wait = 1; queue_delayed_work(system_power_efficient_wq, &rtd->delayed_work, msecs_to_jiffies(rtd->pmdown_time)); } } else { /* capture streams can be powered down now */ snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, SND_SOC_DAPM_STREAM_STOP); } } EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_stop); /** * snd_soc_dapm_enable_pin_unlocked - enable pin. * @dapm: DAPM context * @pin: pin name * * Enables input/output pin and its parents or children widgets iff there is * a valid audio route and active audio stream. * * Requires external locking. * * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to * do any widget power switching. */ int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm, const char *pin) { return snd_soc_dapm_set_pin(dapm, pin, 1); } EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked); /** * snd_soc_dapm_enable_pin - enable pin. * @dapm: DAPM context * @pin: pin name * * Enables input/output pin and its parents or children widgets iff there is * a valid audio route and active audio stream. * * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to * do any widget power switching. */ int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) { int ret; snd_soc_dapm_mutex_lock(dapm); ret = snd_soc_dapm_set_pin(dapm, pin, 1); snd_soc_dapm_mutex_unlock(dapm); return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); /** * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled * @dapm: DAPM context * @pin: pin name * * Enables input/output pin regardless of any other state. This is * intended for use with microphone bias supplies used in microphone * jack detection. * * Requires external locking. * * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to * do any widget power switching. */ int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm, const char *pin) { struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); if (!w) { dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin); return -EINVAL; } dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin); if (!w->connected) { /* * w->force does not affect the number of input or output paths, * so we only have to recheck if w->connected is changed */ dapm_widget_invalidate_input_paths(w); dapm_widget_invalidate_output_paths(w); w->connected = 1; } w->force = 1; dapm_mark_dirty(w, "force enable"); return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked); /** * snd_soc_dapm_force_enable_pin - force a pin to be enabled * @dapm: DAPM context * @pin: pin name * * Enables input/output pin regardless of any other state. This is * intended for use with microphone bias supplies used in microphone * jack detection. * * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to * do any widget power switching. */ int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) { int ret; snd_soc_dapm_mutex_lock(dapm); ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin); snd_soc_dapm_mutex_unlock(dapm); return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); /** * snd_soc_dapm_disable_pin_unlocked - disable pin. * @dapm: DAPM context * @pin: pin name * * Disables input/output pin and its parents or children widgets. * * Requires external locking. * * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to * do any widget power switching. */ int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm, const char *pin) { return snd_soc_dapm_set_pin(dapm, pin, 0); } EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked); /** * snd_soc_dapm_disable_pin - disable pin. * @dapm: DAPM context * @pin: pin name * * Disables input/output pin and its parents or children widgets. * * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to * do any widget power switching. */ int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, const char *pin) { int ret; snd_soc_dapm_mutex_lock(dapm); ret = snd_soc_dapm_set_pin(dapm, pin, 0); snd_soc_dapm_mutex_unlock(dapm); return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); /** * snd_soc_dapm_nc_pin_unlocked - permanently disable pin. * @dapm: DAPM context * @pin: pin name * * Marks the specified pin as being not connected, disabling it along * any parent or child widgets. At present this is identical to * snd_soc_dapm_disable_pin() but in future it will be extended to do * additional things such as disabling controls which only affect * paths through the pin. * * Requires external locking. * * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to * do any widget power switching. */ int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm, const char *pin) { return snd_soc_dapm_set_pin(dapm, pin, 0); } EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked); /** * snd_soc_dapm_nc_pin - permanently disable pin. * @dapm: DAPM context * @pin: pin name * * Marks the specified pin as being not connected, disabling it along * any parent or child widgets. At present this is identical to * snd_soc_dapm_disable_pin() but in future it will be extended to do * additional things such as disabling controls which only affect * paths through the pin. * * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to * do any widget power switching. */ int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) { int ret; snd_soc_dapm_mutex_lock(dapm); ret = snd_soc_dapm_set_pin(dapm, pin, 0); snd_soc_dapm_mutex_unlock(dapm); return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); /** * snd_soc_dapm_get_pin_status - get audio pin status * @dapm: DAPM context * @pin: audio signal pin endpoint (or start point) * * Get audio pin status - connected or disconnected. * * Returns 1 for connected otherwise 0. */ int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, const char *pin) { struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); if (w) return w->connected; return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); /** * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint * @dapm: DAPM context * @pin: audio signal pin endpoint (or start point) * * Mark the given endpoint or pin as ignoring suspend. When the * system is disabled a path between two endpoints flagged as ignoring * suspend will not be disabled. The path must already be enabled via * normal means at suspend time, it will not be turned on if it was not * already enabled. */ int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, const char *pin) { struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); if (!w) { dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin); return -EINVAL; } w->ignore_suspend = 1; return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); /** * snd_soc_dapm_free - free dapm resources * @dapm: DAPM context * * Free all dapm widgets and resources. */ void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) { dapm_debugfs_cleanup(dapm); dapm_free_widgets(dapm); list_del(&dapm->list); } EXPORT_SYMBOL_GPL(snd_soc_dapm_free); void snd_soc_dapm_init(struct snd_soc_dapm_context *dapm, struct snd_soc_card *card, struct snd_soc_component *component) { dapm->card = card; dapm->component = component; dapm->bias_level = SND_SOC_BIAS_OFF; if (component) { dapm->dev = component->dev; dapm->idle_bias_off = !component->driver->idle_bias_on; dapm->suspend_bias_off = component->driver->suspend_bias_off; } else { dapm->dev = card->dev; } INIT_LIST_HEAD(&dapm->list); /* see for_each_card_dapms */ list_add(&dapm->list, &card->dapm_list); } EXPORT_SYMBOL_GPL(snd_soc_dapm_init); static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm) { struct snd_soc_card *card = dapm->card; struct snd_soc_dapm_widget *w; LIST_HEAD(down_list); int powerdown = 0; snd_soc_dapm_mutex_lock_root(card); for_each_card_widgets(dapm->card, w) { if (w->dapm != dapm) continue; if (w->power) { dapm_seq_insert(w, &down_list, false); w->new_power = 0; powerdown = 1; } } /* If there were no widgets to power down we're already in * standby. */ if (powerdown) { if (dapm->bias_level == SND_SOC_BIAS_ON) snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_PREPARE); dapm_seq_run(card, &down_list, 0, false); if (dapm->bias_level == SND_SOC_BIAS_PREPARE) snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_STANDBY); } snd_soc_dapm_mutex_unlock(card); } /* * snd_soc_dapm_shutdown - callback for system shutdown */ void snd_soc_dapm_shutdown(struct snd_soc_card *card) { struct snd_soc_dapm_context *dapm; for_each_card_dapms(card, dapm) { if (dapm != &card->dapm) { soc_dapm_shutdown_dapm(dapm); if (dapm->bias_level == SND_SOC_BIAS_STANDBY) snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_OFF); } } soc_dapm_shutdown_dapm(&card->dapm); if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY) snd_soc_dapm_set_bias_level(&card->dapm, SND_SOC_BIAS_OFF); } /* Module information */ MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); MODULE_LICENSE("GPL");
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