| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Liam Girdwood | 3588 | 23.88% | 33 | 8.97% |
| Kuninori Morimoto | 2865 | 19.07% | 66 | 17.93% |
| Mengdong Lin | 1543 | 10.27% | 13 | 3.53% |
| Lars-Peter Clausen | 1425 | 9.48% | 57 | 15.49% |
| Mark Brown | 1317 | 8.76% | 71 | 19.29% |
| Stephen Warren | 591 | 3.93% | 13 | 3.53% |
| Xiubo Li | 496 | 3.30% | 5 | 1.36% |
| Frank Mandarino | 419 | 2.79% | 1 | 0.27% |
| Srinivas Kandagatla | 304 | 2.02% | 3 | 0.82% |
| Jean-François Moine | 272 | 1.81% | 1 | 0.27% |
| Jyri Sarha | 246 | 1.64% | 4 | 1.09% |
| Misael Lopez Cruz | 235 | 1.56% | 4 | 1.09% |
| Jarkko Nikula | 194 | 1.29% | 9 | 2.45% |
| Benoît Cousson | 158 | 1.05% | 1 | 0.27% |
| Arnaud Pouliquen | 152 | 1.01% | 1 | 0.27% |
| Nicolin Chen | 134 | 0.89% | 3 | 0.82% |
| Dimitris Papastamos | 120 | 0.80% | 4 | 1.09% |
| Ian Molton | 94 | 0.63% | 1 | 0.27% |
| Jerome Brunet | 90 | 0.60% | 2 | 0.54% |
| Sylwester Nawrocki | 66 | 0.44% | 2 | 0.54% |
| Charles Keepax | 62 | 0.41% | 3 | 0.82% |
| Barry Song | 44 | 0.29% | 2 | 0.54% |
| Eric Miao | 43 | 0.29% | 2 | 0.54% |
| Ajit Pandey | 42 | 0.28% | 1 | 0.27% |
| Takashi Iwai | 36 | 0.24% | 6 | 1.63% |
| Russell King | 30 | 0.20% | 1 | 0.27% |
| Richard Fitzgerald | 29 | 0.19% | 1 | 0.27% |
| Tushar Behera | 26 | 0.17% | 1 | 0.27% |
| Matthias Reichl | 24 | 0.16% | 1 | 0.27% |
| Axel Lin | 23 | 0.15% | 2 | 0.54% |
| Jeffy Chen | 22 | 0.15% | 2 | 0.54% |
| Marcel Ziswiler | 22 | 0.15% | 1 | 0.27% |
| Viresh Kumar | 20 | 0.13% | 1 | 0.27% |
| Nariman Poushin | 20 | 0.13% | 1 | 0.27% |
| Sebastien Guiriec | 19 | 0.13% | 1 | 0.27% |
| Sudip Mukherjee | 18 | 0.12% | 1 | 0.27% |
| Rohit kumar | 18 | 0.12% | 1 | 0.27% |
| Namarta Kohli | 17 | 0.11% | 1 | 0.27% |
| Jassi Brar | 16 | 0.11% | 3 | 0.82% |
| Sebastian Reichel | 16 | 0.11% | 1 | 0.27% |
| Donglin Peng | 15 | 0.10% | 2 | 0.54% |
| Kees Cook | 13 | 0.09% | 2 | 0.54% |
| Vinod Koul | 11 | 0.07% | 2 | 0.54% |
| Fabio Estevam | 11 | 0.07% | 2 | 0.54% |
| Andy Green | 11 | 0.07% | 1 | 0.27% |
| Curtis Malainey | 10 | 0.07% | 1 | 0.27% |
| Chuansheng Liu | 8 | 0.05% | 1 | 0.27% |
| Troy Kisky | 7 | 0.05% | 1 | 0.27% |
| Shengjiu Wang | 7 | 0.05% | 1 | 0.27% |
| Tejun Heo | 6 | 0.04% | 2 | 0.54% |
| Shawn Guo | 6 | 0.04% | 1 | 0.27% |
| Jie Yang | 6 | 0.04% | 1 | 0.27% |
| Markus Pargmann | 6 | 0.04% | 1 | 0.27% |
| Guennadi Liakhovetski | 5 | 0.03% | 1 | 0.27% |
| Kay Sievers | 5 | 0.03% | 1 | 0.27% |
| Tony Lindgren | 5 | 0.03% | 1 | 0.27% |
| Tzung-Bi Shih | 5 | 0.03% | 1 | 0.27% |
| Richard Zhao | 4 | 0.03% | 1 | 0.27% |
| Michał Mirosław | 4 | 0.03% | 1 | 0.27% |
| Peter Ujfalusi | 4 | 0.03% | 1 | 0.27% |
| Arnd Bergmann | 3 | 0.02% | 1 | 0.27% |
| Harsha Priya | 2 | 0.01% | 1 | 0.27% |
| Daniel Mack | 2 | 0.01% | 1 | 0.27% |
| Jeeja KP | 2 | 0.01% | 1 | 0.27% |
| Randy Dunlap | 2 | 0.01% | 2 | 0.54% |
| Martin Hundeböll | 1 | 0.01% | 1 | 0.27% |
| Lothar Waßmann | 1 | 0.01% | 1 | 0.27% |
| Masanari Iida | 1 | 0.01% | 1 | 0.27% |
| Julia Lawall | 1 | 0.01% | 1 | 0.27% |
| Daniel Ribeiro | 1 | 0.01% | 1 | 0.27% |
| Gustavo A. R. Silva | 1 | 0.01% | 1 | 0.27% |
| Lu Guanqun | 1 | 0.01% | 1 | 0.27% |
| Andrew Morton | 1 | 0.01% | 1 | 0.27% |
| Alexey Dobriyan | 1 | 0.01% | 1 | 0.27% |
| Janusz Krzysztofik | 1 | 0.01% | 1 | 0.27% |
| Total | 15026 | 368 |
// SPDX-License-Identifier: GPL-2.0+ // // soc-core.c -- ALSA SoC Audio Layer // // Copyright 2005 Wolfson Microelectronics PLC. // Copyright 2005 Openedhand Ltd. // Copyright (C) 2010 Slimlogic Ltd. // Copyright (C) 2010 Texas Instruments Inc. // // Author: Liam Girdwood <lrg@slimlogic.co.uk> // with code, comments and ideas from :- // Richard Purdie <richard@openedhand.com> // // TODO: // o Add hw rules to enforce rates, etc. // o More testing with other codecs/machines. // o Add more codecs and platforms to ensure good API coverage. // o Support TDM on PCM and I2S #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/pm.h> #include <linux/bitops.h> #include <linux/debugfs.h> #include <linux/platform_device.h> #include <linux/pinctrl/consumer.h> #include <linux/ctype.h> #include <linux/slab.h> #include <linux/of.h> #include <linux/of_graph.h> #include <linux/dmi.h> #include <sound/core.h> #include <sound/jack.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/soc-dpcm.h> #include <sound/soc-topology.h> #include <sound/initval.h> #define CREATE_TRACE_POINTS #include <trace/events/asoc.h> #define NAME_SIZE 32 #ifdef CONFIG_DEBUG_FS struct dentry *snd_soc_debugfs_root; EXPORT_SYMBOL_GPL(snd_soc_debugfs_root); #endif static DEFINE_MUTEX(client_mutex); static LIST_HEAD(component_list); static LIST_HEAD(unbind_card_list); #define for_each_component(component) \ list_for_each_entry(component, &component_list, list) /* * This is a timeout to do a DAPM powerdown after a stream is closed(). * It can be used to eliminate pops between different playback streams, e.g. * between two audio tracks. */ static int pmdown_time = 5000; module_param(pmdown_time, int, 0); MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); /* * If a DMI filed contain strings in this blacklist (e.g. * "Type2 - Board Manufacturer" or "Type1 - TBD by OEM"), it will be taken * as invalid and dropped when setting the card long name from DMI info. */ static const char * const dmi_blacklist[] = { "To be filled by OEM", "TBD by OEM", "Default String", "Board Manufacturer", "Board Vendor Name", "Board Product Name", NULL, /* terminator */ }; static ssize_t pmdown_time_show(struct device *dev, struct device_attribute *attr, char *buf) { struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); return sprintf(buf, "%ld\n", rtd->pmdown_time); } static ssize_t pmdown_time_set(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); int ret; ret = kstrtol(buf, 10, &rtd->pmdown_time); if (ret) return ret; return count; } static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set); static struct attribute *soc_dev_attrs[] = { &dev_attr_pmdown_time.attr, NULL }; static umode_t soc_dev_attr_is_visible(struct kobject *kobj, struct attribute *attr, int idx) { struct device *dev = kobj_to_dev(kobj); struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); if (attr == &dev_attr_pmdown_time.attr) return attr->mode; /* always visible */ return rtd->num_codecs ? attr->mode : 0; /* enabled only with codec */ } static const struct attribute_group soc_dapm_dev_group = { .attrs = soc_dapm_dev_attrs, .is_visible = soc_dev_attr_is_visible, }; static const struct attribute_group soc_dev_group = { .attrs = soc_dev_attrs, .is_visible = soc_dev_attr_is_visible, }; static const struct attribute_group *soc_dev_attr_groups[] = { &soc_dapm_dev_group, &soc_dev_group, NULL }; #ifdef CONFIG_DEBUG_FS static void soc_init_component_debugfs(struct snd_soc_component *component) { if (!component->card->debugfs_card_root) return; if (component->debugfs_prefix) { char *name; name = kasprintf(GFP_KERNEL, "%s:%s", component->debugfs_prefix, component->name); if (name) { component->debugfs_root = debugfs_create_dir(name, component->card->debugfs_card_root); kfree(name); } } else { component->debugfs_root = debugfs_create_dir(component->name, component->card->debugfs_card_root); } if (!component->debugfs_root) { dev_warn(component->dev, "ASoC: Failed to create component debugfs directory\n"); return; } snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component), component->debugfs_root); } static void soc_cleanup_component_debugfs(struct snd_soc_component *component) { debugfs_remove_recursive(component->debugfs_root); } static int dai_list_show(struct seq_file *m, void *v) { struct snd_soc_component *component; struct snd_soc_dai *dai; mutex_lock(&client_mutex); for_each_component(component) for_each_component_dais(component, dai) seq_printf(m, "%s\n", dai->name); mutex_unlock(&client_mutex); return 0; } DEFINE_SHOW_ATTRIBUTE(dai_list); static int component_list_show(struct seq_file *m, void *v) { struct snd_soc_component *component; mutex_lock(&client_mutex); for_each_component(component) seq_printf(m, "%s\n", component->name); mutex_unlock(&client_mutex); return 0; } DEFINE_SHOW_ATTRIBUTE(component_list); static void soc_init_card_debugfs(struct snd_soc_card *card) { if (!snd_soc_debugfs_root) return; card->debugfs_card_root = debugfs_create_dir(card->name, snd_soc_debugfs_root); if (!card->debugfs_card_root) { dev_warn(card->dev, "ASoC: Failed to create card debugfs directory\n"); return; } card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644, card->debugfs_card_root, &card->pop_time); if (!card->debugfs_pop_time) dev_warn(card->dev, "ASoC: Failed to create pop time debugfs file\n"); } static void soc_cleanup_card_debugfs(struct snd_soc_card *card) { debugfs_remove_recursive(card->debugfs_card_root); } static void snd_soc_debugfs_init(void) { snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL); if (IS_ERR_OR_NULL(snd_soc_debugfs_root)) { pr_warn("ASoC: Failed to create debugfs directory\n"); snd_soc_debugfs_root = NULL; return; } if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL, &dai_list_fops)) pr_warn("ASoC: Failed to create DAI list debugfs file\n"); if (!debugfs_create_file("components", 0444, snd_soc_debugfs_root, NULL, &component_list_fops)) pr_warn("ASoC: Failed to create component list debugfs file\n"); } static void snd_soc_debugfs_exit(void) { debugfs_remove_recursive(snd_soc_debugfs_root); } #else static inline void soc_init_component_debugfs( struct snd_soc_component *component) { } static inline void soc_cleanup_component_debugfs( struct snd_soc_component *component) { } static inline void soc_init_card_debugfs(struct snd_soc_card *card) { } static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card) { } static inline void snd_soc_debugfs_init(void) { } static inline void snd_soc_debugfs_exit(void) { } #endif static int snd_soc_rtdcom_add(struct snd_soc_pcm_runtime *rtd, struct snd_soc_component *component) { struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_rtdcom_list *new_rtdcom; for_each_rtdcom(rtd, rtdcom) { /* already connected */ if (rtdcom->component == component) return 0; } new_rtdcom = kmalloc(sizeof(*new_rtdcom), GFP_KERNEL); if (!new_rtdcom) return -ENOMEM; new_rtdcom->component = component; INIT_LIST_HEAD(&new_rtdcom->list); list_add_tail(&new_rtdcom->list, &rtd->component_list); return 0; } static void snd_soc_rtdcom_del_all(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_rtdcom_list *rtdcom1, *rtdcom2; for_each_rtdcom_safe(rtd, rtdcom1, rtdcom2) kfree(rtdcom1); INIT_LIST_HEAD(&rtd->component_list); } struct snd_soc_component *snd_soc_rtdcom_lookup(struct snd_soc_pcm_runtime *rtd, const char *driver_name) { struct snd_soc_rtdcom_list *rtdcom; if (!driver_name) return NULL; for_each_rtdcom(rtd, rtdcom) { const char *component_name = rtdcom->component->driver->name; if (!component_name) continue; if ((component_name == driver_name) || strcmp(component_name, driver_name) == 0) return rtdcom->component; } return NULL; } EXPORT_SYMBOL_GPL(snd_soc_rtdcom_lookup); struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card, const char *dai_link, int stream) { struct snd_soc_pcm_runtime *rtd; for_each_card_rtds(card, rtd) { if (rtd->dai_link->no_pcm && !strcmp(rtd->dai_link->name, dai_link)) return rtd->pcm->streams[stream].substream; } dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link); return NULL; } EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream); static const struct snd_soc_ops null_snd_soc_ops; static struct snd_soc_pcm_runtime *soc_new_pcm_runtime( struct snd_soc_card *card, struct snd_soc_dai_link *dai_link) { struct snd_soc_pcm_runtime *rtd; rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); if (!rtd) return NULL; INIT_LIST_HEAD(&rtd->component_list); rtd->card = card; rtd->dai_link = dai_link; if (!rtd->dai_link->ops) rtd->dai_link->ops = &null_snd_soc_ops; rtd->codec_dais = kcalloc(dai_link->num_codecs, sizeof(struct snd_soc_dai *), GFP_KERNEL); if (!rtd->codec_dais) { kfree(rtd); return NULL; } return rtd; } static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime *rtd) { kfree(rtd->codec_dais); snd_soc_rtdcom_del_all(rtd); kfree(rtd); } static void soc_add_pcm_runtime(struct snd_soc_card *card, struct snd_soc_pcm_runtime *rtd) { list_add_tail(&rtd->list, &card->rtd_list); rtd->num = card->num_rtd; card->num_rtd++; } static void soc_remove_pcm_runtimes(struct snd_soc_card *card) { struct snd_soc_pcm_runtime *rtd, *_rtd; for_each_card_rtds_safe(card, rtd, _rtd) { list_del(&rtd->list); soc_free_pcm_runtime(rtd); } card->num_rtd = 0; } struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card, const char *dai_link) { struct snd_soc_pcm_runtime *rtd; for_each_card_rtds(card, rtd) { if (!strcmp(rtd->dai_link->name, dai_link)) return rtd; } dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link); return NULL; } EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime); static void codec2codec_close_delayed_work(struct work_struct *work) { /* * Currently nothing to do for c2c links * Since c2c links are internal nodes in the DAPM graph and * don't interface with the outside world or application layer * we don't have to do any special handling on close. */ } #ifdef CONFIG_PM_SLEEP /* powers down audio subsystem for suspend */ int snd_soc_suspend(struct device *dev) { struct snd_soc_card *card = dev_get_drvdata(dev); struct snd_soc_component *component; struct snd_soc_pcm_runtime *rtd; int i; /* If the card is not initialized yet there is nothing to do */ if (!card->instantiated) return 0; /* * Due to the resume being scheduled into a workqueue we could * suspend before that's finished - wait for it to complete. */ snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0); /* we're going to block userspace touching us until resume completes */ snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot); /* mute any active DACs */ for_each_card_rtds(card, rtd) { struct snd_soc_dai *dai; if (rtd->dai_link->ignore_suspend) continue; for_each_rtd_codec_dai(rtd, i, dai) { struct snd_soc_dai_driver *drv = dai->driver; if (drv->ops->digital_mute && dai->playback_active) drv->ops->digital_mute(dai, 1); } } /* suspend all pcms */ for_each_card_rtds(card, rtd) { if (rtd->dai_link->ignore_suspend) continue; snd_pcm_suspend_all(rtd->pcm); } if (card->suspend_pre) card->suspend_pre(card); for_each_card_rtds(card, rtd) { struct snd_soc_dai *cpu_dai = rtd->cpu_dai; if (rtd->dai_link->ignore_suspend) continue; if (cpu_dai->driver->suspend && !cpu_dai->driver->bus_control) cpu_dai->driver->suspend(cpu_dai); } /* close any waiting streams */ for_each_card_rtds(card, rtd) flush_delayed_work(&rtd->delayed_work); for_each_card_rtds(card, rtd) { if (rtd->dai_link->ignore_suspend) continue; snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, SND_SOC_DAPM_STREAM_SUSPEND); snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, SND_SOC_DAPM_STREAM_SUSPEND); } /* Recheck all endpoints too, their state is affected by suspend */ dapm_mark_endpoints_dirty(card); snd_soc_dapm_sync(&card->dapm); /* suspend all COMPONENTs */ for_each_card_components(card, component) { struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); /* * If there are paths active then the COMPONENT will be held * with bias _ON and should not be suspended. */ if (!component->suspended) { switch (snd_soc_dapm_get_bias_level(dapm)) { case SND_SOC_BIAS_STANDBY: /* * If the COMPONENT is capable of idle * bias off then being in STANDBY * means it's doing something, * otherwise fall through. */ if (dapm->idle_bias_off) { dev_dbg(component->dev, "ASoC: idle_bias_off CODEC on over suspend\n"); break; } /* fall through */ case SND_SOC_BIAS_OFF: if (component->driver->suspend) component->driver->suspend(component); component->suspended = 1; if (component->regmap) regcache_mark_dirty(component->regmap); /* deactivate pins to sleep state */ pinctrl_pm_select_sleep_state(component->dev); break; default: dev_dbg(component->dev, "ASoC: COMPONENT is on over suspend\n"); break; } } } for_each_card_rtds(card, rtd) { struct snd_soc_dai *cpu_dai = rtd->cpu_dai; if (rtd->dai_link->ignore_suspend) continue; if (cpu_dai->driver->suspend && cpu_dai->driver->bus_control) cpu_dai->driver->suspend(cpu_dai); /* deactivate pins to sleep state */ pinctrl_pm_select_sleep_state(cpu_dai->dev); } if (card->suspend_post) card->suspend_post(card); return 0; } EXPORT_SYMBOL_GPL(snd_soc_suspend); /* * deferred resume work, so resume can complete before we finished * setting our codec back up, which can be very slow on I2C */ static void soc_resume_deferred(struct work_struct *work) { struct snd_soc_card *card = container_of(work, struct snd_soc_card, deferred_resume_work); struct snd_soc_pcm_runtime *rtd; struct snd_soc_component *component; int i; /* * our power state is still SNDRV_CTL_POWER_D3hot from suspend time, * so userspace apps are blocked from touching us */ dev_dbg(card->dev, "ASoC: starting resume work\n"); /* Bring us up into D2 so that DAPM starts enabling things */ snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2); if (card->resume_pre) card->resume_pre(card); /* resume control bus DAIs */ for_each_card_rtds(card, rtd) { struct snd_soc_dai *cpu_dai = rtd->cpu_dai; if (rtd->dai_link->ignore_suspend) continue; if (cpu_dai->driver->resume && cpu_dai->driver->bus_control) cpu_dai->driver->resume(cpu_dai); } for_each_card_components(card, component) { if (component->suspended) { if (component->driver->resume) component->driver->resume(component); component->suspended = 0; } } for_each_card_rtds(card, rtd) { if (rtd->dai_link->ignore_suspend) continue; snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, SND_SOC_DAPM_STREAM_RESUME); snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, SND_SOC_DAPM_STREAM_RESUME); } /* unmute any active DACs */ for_each_card_rtds(card, rtd) { struct snd_soc_dai *dai; if (rtd->dai_link->ignore_suspend) continue; for_each_rtd_codec_dai(rtd, i, dai) { struct snd_soc_dai_driver *drv = dai->driver; if (drv->ops->digital_mute && dai->playback_active) drv->ops->digital_mute(dai, 0); } } for_each_card_rtds(card, rtd) { struct snd_soc_dai *cpu_dai = rtd->cpu_dai; if (rtd->dai_link->ignore_suspend) continue; if (cpu_dai->driver->resume && !cpu_dai->driver->bus_control) cpu_dai->driver->resume(cpu_dai); } if (card->resume_post) card->resume_post(card); dev_dbg(card->dev, "ASoC: resume work completed\n"); /* Recheck all endpoints too, their state is affected by suspend */ dapm_mark_endpoints_dirty(card); snd_soc_dapm_sync(&card->dapm); /* userspace can access us now we are back as we were before */ snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0); } /* powers up audio subsystem after a suspend */ int snd_soc_resume(struct device *dev) { struct snd_soc_card *card = dev_get_drvdata(dev); bool bus_control = false; struct snd_soc_pcm_runtime *rtd; /* If the card is not initialized yet there is nothing to do */ if (!card->instantiated) return 0; /* activate pins from sleep state */ for_each_card_rtds(card, rtd) { struct snd_soc_dai *codec_dai; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; int j; if (cpu_dai->active) pinctrl_pm_select_default_state(cpu_dai->dev); for_each_rtd_codec_dai(rtd, j, codec_dai) { if (codec_dai->active) pinctrl_pm_select_default_state(codec_dai->dev); } } /* * DAIs that also act as the control bus master might have other drivers * hanging off them so need to resume immediately. Other drivers don't * have that problem and may take a substantial amount of time to resume * due to I/O costs and anti-pop so handle them out of line. */ for_each_card_rtds(card, rtd) { struct snd_soc_dai *cpu_dai = rtd->cpu_dai; bus_control |= cpu_dai->driver->bus_control; } if (bus_control) { dev_dbg(dev, "ASoC: Resuming control bus master immediately\n"); soc_resume_deferred(&card->deferred_resume_work); } else { dev_dbg(dev, "ASoC: Scheduling resume work\n"); if (!schedule_work(&card->deferred_resume_work)) dev_err(dev, "ASoC: resume work item may be lost\n"); } return 0; } EXPORT_SYMBOL_GPL(snd_soc_resume); #else #define snd_soc_suspend NULL #define snd_soc_resume NULL #endif static const struct snd_soc_dai_ops null_dai_ops = { }; static struct snd_soc_component *soc_find_component( const struct device_node *of_node, const char *name) { struct snd_soc_component *component; struct device_node *component_of_node; lockdep_assert_held(&client_mutex); for_each_component(component) { if (of_node) { component_of_node = component->dev->of_node; if (!component_of_node && component->dev->parent) component_of_node = component->dev->parent->of_node; if (component_of_node == of_node) return component; } else if (name && strcmp(component->name, name) == 0) { return component; } } return NULL; } static int snd_soc_is_matching_component( const struct snd_soc_dai_link_component *dlc, struct snd_soc_component *component) { struct device_node *component_of_node; component_of_node = component->dev->of_node; if (!component_of_node && component->dev->parent) component_of_node = component->dev->parent->of_node; if (dlc->of_node && component_of_node != dlc->of_node) return 0; if (dlc->name && strcmp(component->name, dlc->name)) return 0; return 1; } /** * snd_soc_find_dai - Find a registered DAI * * @dlc: name of the DAI or the DAI driver and optional component info to match * * This function will search all registered components and their DAIs to * find the DAI of the same name. The component's of_node and name * should also match if being specified. * * Return: pointer of DAI, or NULL if not found. */ struct snd_soc_dai *snd_soc_find_dai( const struct snd_soc_dai_link_component *dlc) { struct snd_soc_component *component; struct snd_soc_dai *dai; lockdep_assert_held(&client_mutex); /* Find CPU DAI from registered DAIs */ for_each_component(component) { if (!snd_soc_is_matching_component(dlc, component)) continue; for_each_component_dais(component, dai) { if (dlc->dai_name && strcmp(dai->name, dlc->dai_name) && (!dai->driver->name || strcmp(dai->driver->name, dlc->dai_name))) continue; return dai; } } return NULL; } EXPORT_SYMBOL_GPL(snd_soc_find_dai); /** * snd_soc_find_dai_link - Find a DAI link * * @card: soc card * @id: DAI link ID to match * @name: DAI link name to match, optional * @stream_name: DAI link stream name to match, optional * * This function will search all existing DAI links of the soc card to * find the link of the same ID. Since DAI links may not have their * unique ID, so name and stream name should also match if being * specified. * * Return: pointer of DAI link, or NULL if not found. */ struct snd_soc_dai_link *snd_soc_find_dai_link(struct snd_soc_card *card, int id, const char *name, const char *stream_name) { struct snd_soc_dai_link *link, *_link; lockdep_assert_held(&client_mutex); for_each_card_links_safe(card, link, _link) { if (link->id != id) continue; if (name && (!link->name || strcmp(name, link->name))) continue; if (stream_name && (!link->stream_name || strcmp(stream_name, link->stream_name))) continue; return link; } return NULL; } EXPORT_SYMBOL_GPL(snd_soc_find_dai_link); static bool soc_is_dai_link_bound(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link) { struct snd_soc_pcm_runtime *rtd; for_each_card_rtds(card, rtd) { if (rtd->dai_link == dai_link) return true; } return false; } static int soc_bind_dai_link(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link) { struct snd_soc_pcm_runtime *rtd; struct snd_soc_dai_link_component *codecs = dai_link->codecs; struct snd_soc_dai_link_component cpu_dai_component; struct snd_soc_component *component; struct snd_soc_dai **codec_dais; int i; if (dai_link->ignore) return 0; dev_dbg(card->dev, "ASoC: binding %s\n", dai_link->name); if (soc_is_dai_link_bound(card, dai_link)) { dev_dbg(card->dev, "ASoC: dai link %s already bound\n", dai_link->name); return 0; } rtd = soc_new_pcm_runtime(card, dai_link); if (!rtd) return -ENOMEM; cpu_dai_component.name = dai_link->cpu_name; cpu_dai_component.of_node = dai_link->cpu_of_node; cpu_dai_component.dai_name = dai_link->cpu_dai_name; rtd->cpu_dai = snd_soc_find_dai(&cpu_dai_component); if (!rtd->cpu_dai) { dev_info(card->dev, "ASoC: CPU DAI %s not registered\n", dai_link->cpu_dai_name); goto _err_defer; } snd_soc_rtdcom_add(rtd, rtd->cpu_dai->component); rtd->num_codecs = dai_link->num_codecs; /* Find CODEC from registered CODECs */ /* we can use for_each_rtd_codec_dai() after this */ codec_dais = rtd->codec_dais; for (i = 0; i < rtd->num_codecs; i++) { codec_dais[i] = snd_soc_find_dai(&codecs[i]); if (!codec_dais[i]) { dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n", codecs[i].dai_name); goto _err_defer; } snd_soc_rtdcom_add(rtd, codec_dais[i]->component); } /* Single codec links expect codec and codec_dai in runtime data */ rtd->codec_dai = codec_dais[0]; /* find one from the set of registered platforms */ for_each_component(component) { if (!snd_soc_is_matching_component(dai_link->platform, component)) continue; snd_soc_rtdcom_add(rtd, component); } soc_add_pcm_runtime(card, rtd); return 0; _err_defer: soc_free_pcm_runtime(rtd); return -EPROBE_DEFER; } static void soc_remove_component(struct snd_soc_component *component) { if (!component->card) return; list_del(&component->card_list); if (component->driver->remove) component->driver->remove(component); snd_soc_dapm_free(snd_soc_component_get_dapm(component)); soc_cleanup_component_debugfs(component); component->card = NULL; module_put(component->dev->driver->owner); } static void soc_remove_dai(struct snd_soc_dai *dai, int order) { int err; if (!dai || !dai->probed || !dai->driver || dai->driver->remove_order != order) return; if (dai->driver->remove) { err = dai->driver->remove(dai); if (err < 0) dev_err(dai->dev, "ASoC: failed to remove %s: %d\n", dai->name, err); } dai->probed = 0; } static void soc_remove_link_dais(struct snd_soc_card *card, struct snd_soc_pcm_runtime *rtd, int order) { int i; struct snd_soc_dai *codec_dai; /* unregister the rtd device */ if (rtd->dev_registered) { device_unregister(rtd->dev); rtd->dev_registered = 0; } /* remove the CODEC DAI */ for_each_rtd_codec_dai(rtd, i, codec_dai) soc_remove_dai(codec_dai, order); soc_remove_dai(rtd->cpu_dai, order); } static void soc_remove_link_components(struct snd_soc_card *card, struct snd_soc_pcm_runtime *rtd, int order) { struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (component->driver->remove_order == order) soc_remove_component(component); } } static void soc_remove_dai_links(struct snd_soc_card *card) { int order; struct snd_soc_pcm_runtime *rtd; struct snd_soc_dai_link *link, *_link; for_each_comp_order(order) { for_each_card_rtds(card, rtd) soc_remove_link_dais(card, rtd, order); } for_each_comp_order(order) { for_each_card_rtds(card, rtd) soc_remove_link_components(card, rtd, order); } for_each_card_links_safe(card, link, _link) { if (link->dobj.type == SND_SOC_DOBJ_DAI_LINK) dev_warn(card->dev, "Topology forgot to remove link %s?\n", link->name); list_del(&link->list); } } static int snd_soc_init_platform(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link) { struct snd_soc_dai_link_component *platform = dai_link->platform; /* * FIXME * * this function should be removed in the future */ /* convert Legacy platform link */ if (!platform || dai_link->legacy_platform) { platform = devm_kzalloc(card->dev, sizeof(struct snd_soc_dai_link_component), GFP_KERNEL); if (!platform) return -ENOMEM; dai_link->platform = platform; dai_link->legacy_platform = 1; platform->name = dai_link->platform_name; platform->of_node = dai_link->platform_of_node; platform->dai_name = NULL; } /* if there's no platform we match on the empty platform */ if (!platform->name && !platform->of_node) platform->name = "snd-soc-dummy"; return 0; } static int snd_soc_init_multicodec(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link) { /* Legacy codec/codec_dai link is a single entry in multicodec */ if (dai_link->codec_name || dai_link->codec_of_node || dai_link->codec_dai_name) { dai_link->num_codecs = 1; dai_link->codecs = devm_kzalloc(card->dev, sizeof(struct snd_soc_dai_link_component), GFP_KERNEL); if (!dai_link->codecs) return -ENOMEM; dai_link->codecs[0].name = dai_link->codec_name; dai_link->codecs[0].of_node = dai_link->codec_of_node; dai_link->codecs[0].dai_name = dai_link->codec_dai_name; } if (!dai_link->codecs) { dev_err(card->dev, "ASoC: DAI link has no CODECs\n"); return -EINVAL; } return 0; } static int soc_init_dai_link(struct snd_soc_card *card, struct snd_soc_dai_link *link) { int i, ret; struct snd_soc_dai_link_component *codec; ret = snd_soc_init_platform(card, link); if (ret) { dev_err(card->dev, "ASoC: failed to init multiplatform\n"); return ret; } ret = snd_soc_init_multicodec(card, link); if (ret) { dev_err(card->dev, "ASoC: failed to init multicodec\n"); return ret; } for_each_link_codecs(link, i, codec) { /* * Codec must be specified by 1 of name or OF node, * not both or neither. */ if (!!codec->name == !!codec->of_node) { dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n", link->name); return -EINVAL; } /* Codec DAI name must be specified */ if (!codec->dai_name) { dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n", link->name); return -EINVAL; } } /* * Platform may be specified by either name or OF node, but * can be left unspecified, and a dummy platform will be used. */ if (link->platform->name && link->platform->of_node) { dev_err(card->dev, "ASoC: Both platform name/of_node are set for %s\n", link->name); return -EINVAL; } /* * Defer card registartion if platform dai component is not added to * component list. */ if ((link->platform->of_node || link->platform->name) && !soc_find_component(link->platform->of_node, link->platform->name)) return -EPROBE_DEFER; /* * CPU device may be specified by either name or OF node, but * can be left unspecified, and will be matched based on DAI * name alone.. */ if (link->cpu_name && link->cpu_of_node) { dev_err(card->dev, "ASoC: Neither/both cpu name/of_node are set for %s\n", link->name); return -EINVAL; } /* * Defer card registartion if cpu dai component is not added to * component list. */ if ((link->cpu_of_node || link->cpu_name) && !soc_find_component(link->cpu_of_node, link->cpu_name)) return -EPROBE_DEFER; /* * At least one of CPU DAI name or CPU device name/node must be * specified */ if (!link->cpu_dai_name && !(link->cpu_name || link->cpu_of_node)) { dev_err(card->dev, "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n", link->name); return -EINVAL; } return 0; } void snd_soc_disconnect_sync(struct device *dev) { struct snd_soc_component *component = snd_soc_lookup_component(dev, NULL); if (!component || !component->card) return; snd_card_disconnect_sync(component->card->snd_card); } EXPORT_SYMBOL_GPL(snd_soc_disconnect_sync); /** * snd_soc_add_dai_link - Add a DAI link dynamically * @card: The ASoC card to which the DAI link is added * @dai_link: The new DAI link to add * * This function adds a DAI link to the ASoC card's link list. * * Note: Topology can use this API to add DAI links when probing the * topology component. And machine drivers can still define static * DAI links in dai_link array. */ int snd_soc_add_dai_link(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link) { if (dai_link->dobj.type && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) { dev_err(card->dev, "Invalid dai link type %d\n", dai_link->dobj.type); return -EINVAL; } lockdep_assert_held(&client_mutex); /* * Notify the machine driver for extra initialization * on the link created by topology. */ if (dai_link->dobj.type && card->add_dai_link) card->add_dai_link(card, dai_link); list_add_tail(&dai_link->list, &card->dai_link_list); return 0; } EXPORT_SYMBOL_GPL(snd_soc_add_dai_link); /** * snd_soc_remove_dai_link - Remove a DAI link from the list * @card: The ASoC card that owns the link * @dai_link: The DAI link to remove * * This function removes a DAI link from the ASoC card's link list. * * For DAI links previously added by topology, topology should * remove them by using the dobj embedded in the link. */ void snd_soc_remove_dai_link(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link) { struct snd_soc_dai_link *link, *_link; if (dai_link->dobj.type && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) { dev_err(card->dev, "Invalid dai link type %d\n", dai_link->dobj.type); return; } lockdep_assert_held(&client_mutex); /* * Notify the machine driver for extra destruction * on the link created by topology. */ if (dai_link->dobj.type && card->remove_dai_link) card->remove_dai_link(card, dai_link); for_each_card_links_safe(card, link, _link) { if (link == dai_link) { list_del(&link->list); return; } } } EXPORT_SYMBOL_GPL(snd_soc_remove_dai_link); static void soc_set_of_name_prefix(struct snd_soc_component *component) { struct device_node *component_of_node = component->dev->of_node; const char *str; int ret; if (!component_of_node && component->dev->parent) component_of_node = component->dev->parent->of_node; ret = of_property_read_string(component_of_node, "sound-name-prefix", &str); if (!ret) component->name_prefix = str; } static void soc_set_name_prefix(struct snd_soc_card *card, struct snd_soc_component *component) { int i; for (i = 0; i < card->num_configs && card->codec_conf; i++) { struct snd_soc_codec_conf *map = &card->codec_conf[i]; struct device_node *component_of_node = component->dev->of_node; if (!component_of_node && component->dev->parent) component_of_node = component->dev->parent->of_node; if (map->of_node && component_of_node != map->of_node) continue; if (map->dev_name && strcmp(component->name, map->dev_name)) continue; component->name_prefix = map->name_prefix; return; } /* * If there is no configuration table or no match in the table, * check if a prefix is provided in the node */ soc_set_of_name_prefix(component); } static int soc_probe_component(struct snd_soc_card *card, struct snd_soc_component *component) { struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); struct snd_soc_dai *dai; int ret; if (!strcmp(component->name, "snd-soc-dummy")) return 0; if (component->card) { if (component->card != card) { dev_err(component->dev, "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n", card->name, component->card->name); return -ENODEV; } return 0; } if (!try_module_get(component->dev->driver->owner)) return -ENODEV; component->card = card; dapm->card = card; soc_set_name_prefix(card, component); soc_init_component_debugfs(component); if (component->driver->dapm_widgets) { ret = snd_soc_dapm_new_controls(dapm, component->driver->dapm_widgets, component->driver->num_dapm_widgets); if (ret != 0) { dev_err(component->dev, "Failed to create new controls %d\n", ret); goto err_probe; } } for_each_component_dais(component, dai) { ret = snd_soc_dapm_new_dai_widgets(dapm, dai); if (ret != 0) { dev_err(component->dev, "Failed to create DAI widgets %d\n", ret); goto err_probe; } } if (component->driver->probe) { ret = component->driver->probe(component); if (ret < 0) { dev_err(component->dev, "ASoC: failed to probe component %d\n", ret); goto err_probe; } WARN(dapm->idle_bias_off && dapm->bias_level != SND_SOC_BIAS_OFF, "codec %s can not start from non-off bias with idle_bias_off==1\n", component->name); } /* machine specific init */ if (component->init) { ret = component->init(component); if (ret < 0) { dev_err(component->dev, "Failed to do machine specific init %d\n", ret); goto err_probe; } } if (component->driver->controls) snd_soc_add_component_controls(component, component->driver->controls, component->driver->num_controls); if (component->driver->dapm_routes) snd_soc_dapm_add_routes(dapm, component->driver->dapm_routes, component->driver->num_dapm_routes); list_add(&dapm->list, &card->dapm_list); /* see for_each_card_components */ list_add(&component->card_list, &card->component_dev_list); return 0; err_probe: soc_cleanup_component_debugfs(component); component->card = NULL; module_put(component->dev->driver->owner); return ret; } static void rtd_release(struct device *dev) { kfree(dev); } static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd, const char *name) { int ret = 0; /* register the rtd device */ rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL); if (!rtd->dev) return -ENOMEM; device_initialize(rtd->dev); rtd->dev->parent = rtd->card->dev; rtd->dev->release = rtd_release; rtd->dev->groups = soc_dev_attr_groups; dev_set_name(rtd->dev, "%s", name); dev_set_drvdata(rtd->dev, rtd); mutex_init(&rtd->pcm_mutex); INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients); INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients); INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients); INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients); ret = device_add(rtd->dev); if (ret < 0) { /* calling put_device() here to free the rtd->dev */ put_device(rtd->dev); dev_err(rtd->card->dev, "ASoC: failed to register runtime device: %d\n", ret); return ret; } rtd->dev_registered = 1; return 0; } static int soc_probe_link_components(struct snd_soc_card *card, struct snd_soc_pcm_runtime *rtd, int order) { struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; int ret; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (component->driver->probe_order == order) { ret = soc_probe_component(card, component); if (ret < 0) return ret; } } return 0; } static int soc_probe_dai(struct snd_soc_dai *dai, int order) { if (dai->probed || dai->driver->probe_order != order) return 0; if (dai->driver->probe) { int ret = dai->driver->probe(dai); if (ret < 0) { dev_err(dai->dev, "ASoC: failed to probe DAI %s: %d\n", dai->name, ret); return ret; } } dai->probed = 1; return 0; } static int soc_link_dai_pcm_new(struct snd_soc_dai **dais, int num_dais, struct snd_soc_pcm_runtime *rtd) { int i, ret = 0; for (i = 0; i < num_dais; ++i) { struct snd_soc_dai_driver *drv = dais[i]->driver; if (drv->pcm_new) ret = drv->pcm_new(rtd, dais[i]); if (ret < 0) { dev_err(dais[i]->dev, "ASoC: Failed to bind %s with pcm device\n", dais[i]->name); return ret; } } return 0; } static int soc_probe_link_dais(struct snd_soc_card *card, struct snd_soc_pcm_runtime *rtd, int order) { struct snd_soc_dai_link *dai_link = rtd->dai_link; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_component *component; struct snd_soc_dai *codec_dai; int i, ret, num; dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n", card->name, rtd->num, order); /* set default power off timeout */ rtd->pmdown_time = pmdown_time; ret = soc_probe_dai(cpu_dai, order); if (ret) return ret; /* probe the CODEC DAI */ for_each_rtd_codec_dai(rtd, i, codec_dai) { ret = soc_probe_dai(codec_dai, order); if (ret) return ret; } /* complete DAI probe during last probe */ if (order != SND_SOC_COMP_ORDER_LAST) return 0; /* do machine specific initialization */ if (dai_link->init) { ret = dai_link->init(rtd); if (ret < 0) { dev_err(card->dev, "ASoC: failed to init %s: %d\n", dai_link->name, ret); return ret; } } if (dai_link->dai_fmt) snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt); ret = soc_post_component_init(rtd, dai_link->name); if (ret) return ret; #ifdef CONFIG_DEBUG_FS /* add DPCM sysfs entries */ if (dai_link->dynamic) soc_dpcm_debugfs_add(rtd); #endif num = rtd->num; /* * most drivers will register their PCMs using DAI link ordering but * topology based drivers can use the DAI link id field to set PCM * device number and then use rtd + a base offset of the BEs. */ for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (!component->driver->use_dai_pcm_id) continue; if (rtd->dai_link->no_pcm) num += component->driver->be_pcm_base; else num = rtd->dai_link->id; } if (cpu_dai->driver->compress_new) { /* create compress_device" */ ret = cpu_dai->driver->compress_new(rtd, num); if (ret < 0) { dev_err(card->dev, "ASoC: can't create compress %s\n", dai_link->stream_name); return ret; } } else { if (!dai_link->params) { /* create the pcm */ ret = soc_new_pcm(rtd, num); if (ret < 0) { dev_err(card->dev, "ASoC: can't create pcm %s :%d\n", dai_link->stream_name, ret); return ret; } ret = soc_link_dai_pcm_new(&cpu_dai, 1, rtd); if (ret < 0) return ret; ret = soc_link_dai_pcm_new(rtd->codec_dais, rtd->num_codecs, rtd); if (ret < 0) return ret; } else { INIT_DELAYED_WORK(&rtd->delayed_work, codec2codec_close_delayed_work); } } return 0; } static int soc_bind_aux_dev(struct snd_soc_card *card, int num) { struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num]; struct snd_soc_component *component; const char *name; struct device_node *codec_of_node; if (aux_dev->codec_of_node || aux_dev->codec_name) { /* codecs, usually analog devices */ name = aux_dev->codec_name; codec_of_node = aux_dev->codec_of_node; component = soc_find_component(codec_of_node, name); if (!component) { if (codec_of_node) name = of_node_full_name(codec_of_node); goto err_defer; } } else if (aux_dev->name) { /* generic components */ name = aux_dev->name; component = soc_find_component(NULL, name); if (!component) goto err_defer; } else { dev_err(card->dev, "ASoC: Invalid auxiliary device\n"); return -EINVAL; } component->init = aux_dev->init; list_add(&component->card_aux_list, &card->aux_comp_list); return 0; err_defer: dev_err(card->dev, "ASoC: %s not registered\n", name); return -EPROBE_DEFER; } static int soc_probe_aux_devices(struct snd_soc_card *card) { struct snd_soc_component *comp; int order; int ret; for_each_comp_order(order) { list_for_each_entry(comp, &card->aux_comp_list, card_aux_list) { if (comp->driver->probe_order == order) { ret = soc_probe_component(card, comp); if (ret < 0) { dev_err(card->dev, "ASoC: failed to probe aux component %s %d\n", comp->name, ret); return ret; } } } } return 0; } static void soc_remove_aux_devices(struct snd_soc_card *card) { struct snd_soc_component *comp, *_comp; int order; for_each_comp_order(order) { list_for_each_entry_safe(comp, _comp, &card->aux_comp_list, card_aux_list) { if (comp->driver->remove_order == order) { soc_remove_component(comp); /* remove it from the card's aux_comp_list */ list_del(&comp->card_aux_list); } } } } /** * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime * @rtd: The runtime for which the DAI link format should be changed * @dai_fmt: The new DAI link format * * This function updates the DAI link format for all DAIs connected to the DAI * link for the specified runtime. * * Note: For setups with a static format set the dai_fmt field in the * corresponding snd_dai_link struct instead of using this function. * * Returns 0 on success, otherwise a negative error code. */ int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd, unsigned int dai_fmt) { struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai; unsigned int i; int ret; for_each_rtd_codec_dai(rtd, i, codec_dai) { ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt); if (ret != 0 && ret != -ENOTSUPP) { dev_warn(codec_dai->dev, "ASoC: Failed to set DAI format: %d\n", ret); return ret; } } /* * Flip the polarity for the "CPU" end of a CODEC<->CODEC link * the component which has non_legacy_dai_naming is Codec */ if (cpu_dai->component->driver->non_legacy_dai_naming) { unsigned int inv_dai_fmt; inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK; switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBM_CFM: inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS; break; case SND_SOC_DAIFMT_CBM_CFS: inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM; break; case SND_SOC_DAIFMT_CBS_CFM: inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS; break; case SND_SOC_DAIFMT_CBS_CFS: inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM; break; } dai_fmt = inv_dai_fmt; } ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt); if (ret != 0 && ret != -ENOTSUPP) { dev_warn(cpu_dai->dev, "ASoC: Failed to set DAI format: %d\n", ret); return ret; } return 0; } EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt); #ifdef CONFIG_DMI /* * Trim special characters, and replace '-' with '_' since '-' is used to * separate different DMI fields in the card long name. Only number and * alphabet characters and a few separator characters are kept. */ static void cleanup_dmi_name(char *name) { int i, j = 0; for (i = 0; name[i]; i++) { if (isalnum(name[i]) || (name[i] == '.') || (name[i] == '_')) name[j++] = name[i]; else if (name[i] == '-') name[j++] = '_'; } name[j] = '\0'; } /* * Check if a DMI field is valid, i.e. not containing any string * in the black list. */ static int is_dmi_valid(const char *field) { int i = 0; while (dmi_blacklist[i]) { if (strstr(field, dmi_blacklist[i])) return 0; i++; } return 1; } /** * snd_soc_set_dmi_name() - Register DMI names to card * @card: The card to register DMI names * @flavour: The flavour "differentiator" for the card amongst its peers. * * An Intel machine driver may be used by many different devices but are * difficult for userspace to differentiate, since machine drivers ususally * use their own name as the card short name and leave the card long name * blank. To differentiate such devices and fix bugs due to lack of * device-specific configurations, this function allows DMI info to be used * as the sound card long name, in the format of * "vendor-product-version-board" * (Character '-' is used to separate different DMI fields here). * This will help the user space to load the device-specific Use Case Manager * (UCM) configurations for the card. * * Possible card long names may be: * DellInc.-XPS139343-01-0310JH * ASUSTeKCOMPUTERINC.-T100TA-1.0-T100TA * Circuitco-MinnowboardMaxD0PLATFORM-D0-MinnowBoardMAX * * This function also supports flavoring the card longname to provide * the extra differentiation, like "vendor-product-version-board-flavor". * * We only keep number and alphabet characters and a few separator characters * in the card long name since UCM in the user space uses the card long names * as card configuration directory names and AudoConf cannot support special * charactors like SPACE. * * Returns 0 on success, otherwise a negative error code. */ int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour) { const char *vendor, *product, *product_version, *board; size_t longname_buf_size = sizeof(card->snd_card->longname); size_t len; if (card->long_name) return 0; /* long name already set by driver or from DMI */ /* make up dmi long name as: vendor.product.version.board */ vendor = dmi_get_system_info(DMI_BOARD_VENDOR); if (!vendor || !is_dmi_valid(vendor)) { dev_warn(card->dev, "ASoC: no DMI vendor name!\n"); return 0; } snprintf(card->dmi_longname, sizeof(card->snd_card->longname), "%s", vendor); cleanup_dmi_name(card->dmi_longname); product = dmi_get_system_info(DMI_PRODUCT_NAME); if (product && is_dmi_valid(product)) { len = strlen(card->dmi_longname); snprintf(card->dmi_longname + len, longname_buf_size - len, "-%s", product); len++; /* skip the separator "-" */ if (len < longname_buf_size) cleanup_dmi_name(card->dmi_longname + len); /* * some vendors like Lenovo may only put a self-explanatory * name in the product version field */ product_version = dmi_get_system_info(DMI_PRODUCT_VERSION); if (product_version && is_dmi_valid(product_version)) { len = strlen(card->dmi_longname); snprintf(card->dmi_longname + len, longname_buf_size - len, "-%s", product_version); len++; if (len < longname_buf_size) cleanup_dmi_name(card->dmi_longname + len); } } board = dmi_get_system_info(DMI_BOARD_NAME); if (board && is_dmi_valid(board)) { len = strlen(card->dmi_longname); snprintf(card->dmi_longname + len, longname_buf_size - len, "-%s", board); len++; if (len < longname_buf_size) cleanup_dmi_name(card->dmi_longname + len); } else if (!product) { /* fall back to using legacy name */ dev_warn(card->dev, "ASoC: no DMI board/product name!\n"); return 0; } /* Add flavour to dmi long name */ if (flavour) { len = strlen(card->dmi_longname); snprintf(card->dmi_longname + len, longname_buf_size - len, "-%s", flavour); len++; if (len < longname_buf_size) cleanup_dmi_name(card->dmi_longname + len); } /* set the card long name */ card->long_name = card->dmi_longname; return 0; } EXPORT_SYMBOL_GPL(snd_soc_set_dmi_name); #endif /* CONFIG_DMI */ static void soc_check_tplg_fes(struct snd_soc_card *card) { struct snd_soc_component *component; const struct snd_soc_component_driver *comp_drv; struct snd_soc_dai_link *dai_link; int i; for_each_component(component) { /* does this component override FEs ? */ if (!component->driver->ignore_machine) continue; /* for this machine ? */ if (strcmp(component->driver->ignore_machine, card->dev->driver->name)) continue; /* machine matches, so override the rtd data */ for_each_card_prelinks(card, i, dai_link) { /* ignore this FE */ if (dai_link->dynamic) { dai_link->ignore = true; continue; } dev_info(card->dev, "info: override FE DAI link %s\n", card->dai_link[i].name); /* override platform component */ if (snd_soc_init_platform(card, dai_link) < 0) { dev_err(card->dev, "init platform error"); continue; } dai_link->platform->name = component->name; /* convert non BE into BE */ dai_link->no_pcm = 1; /* override any BE fixups */ dai_link->be_hw_params_fixup = component->driver->be_hw_params_fixup; /* * most BE links don't set stream name, so set it to * dai link name if it's NULL to help bind widgets. */ if (!dai_link->stream_name) dai_link->stream_name = dai_link->name; } /* Inform userspace we are using alternate topology */ if (component->driver->topology_name_prefix) { /* topology shortname created? */ if (!card->topology_shortname_created) { comp_drv = component->driver; snprintf(card->topology_shortname, 32, "%s-%s", comp_drv->topology_name_prefix, card->name); card->topology_shortname_created = true; } /* use topology shortname */ card->name = card->topology_shortname; } } } static int snd_soc_instantiate_card(struct snd_soc_card *card) { struct snd_soc_pcm_runtime *rtd; struct snd_soc_dai_link *dai_link; int ret, i, order; mutex_lock(&client_mutex); mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT); /* check whether any platform is ignore machine FE and using topology */ soc_check_tplg_fes(card); /* bind DAIs */ for_each_card_prelinks(card, i, dai_link) { ret = soc_bind_dai_link(card, dai_link); if (ret != 0) goto base_error; } /* bind aux_devs too */ for (i = 0; i < card->num_aux_devs; i++) { ret = soc_bind_aux_dev(card, i); if (ret != 0) goto base_error; } /* add predefined DAI links to the list */ for_each_card_prelinks(card, i, dai_link) snd_soc_add_dai_link(card, dai_link); /* card bind complete so register a sound card */ ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, card->owner, 0, &card->snd_card); if (ret < 0) { dev_err(card->dev, "ASoC: can't create sound card for card %s: %d\n", card->name, ret); goto base_error; } soc_init_card_debugfs(card); card->dapm.bias_level = SND_SOC_BIAS_OFF; card->dapm.dev = card->dev; card->dapm.card = card; list_add(&card->dapm.list, &card->dapm_list); #ifdef CONFIG_DEBUG_FS snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root); #endif #ifdef CONFIG_PM_SLEEP /* deferred resume work */ INIT_WORK(&card->deferred_resume_work, soc_resume_deferred); #endif if (card->dapm_widgets) snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets, card->num_dapm_widgets); if (card->of_dapm_widgets) snd_soc_dapm_new_controls(&card->dapm, card->of_dapm_widgets, card->num_of_dapm_widgets); /* initialise the sound card only once */ if (card->probe) { ret = card->probe(card); if (ret < 0) goto card_probe_error; } /* probe all components used by DAI links on this card */ for_each_comp_order(order) { for_each_card_rtds(card, rtd) { ret = soc_probe_link_components(card, rtd, order); if (ret < 0) { dev_err(card->dev, "ASoC: failed to instantiate card %d\n", ret); goto probe_dai_err; } } } /* probe auxiliary components */ ret = soc_probe_aux_devices(card); if (ret < 0) goto probe_dai_err; /* * Find new DAI links added during probing components and bind them. * Components with topology may bring new DAIs and DAI links. */ for_each_card_links(card, dai_link) { if (soc_is_dai_link_bound(card, dai_link)) continue; ret = soc_init_dai_link(card, dai_link); if (ret) goto probe_dai_err; ret = soc_bind_dai_link(card, dai_link); if (ret) goto probe_dai_err; } /* probe all DAI links on this card */ for_each_comp_order(order) { for_each_card_rtds(card, rtd) { ret = soc_probe_link_dais(card, rtd, order); if (ret < 0) { dev_err(card->dev, "ASoC: failed to instantiate card %d\n", ret); goto probe_dai_err; } } } snd_soc_dapm_link_dai_widgets(card); snd_soc_dapm_connect_dai_link_widgets(card); if (card->controls) snd_soc_add_card_controls(card, card->controls, card->num_controls); if (card->dapm_routes) snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes, card->num_dapm_routes); if (card->of_dapm_routes) snd_soc_dapm_add_routes(&card->dapm, card->of_dapm_routes, card->num_of_dapm_routes); /* try to set some sane longname if DMI is available */ snd_soc_set_dmi_name(card, NULL); snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname), "%s", card->name); snprintf(card->snd_card->longname, sizeof(card->snd_card->longname), "%s", card->long_name ? card->long_name : card->name); snprintf(card->snd_card->driver, sizeof(card->snd_card->driver), "%s", card->driver_name ? card->driver_name : card->name); for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) { switch (card->snd_card->driver[i]) { case '_': case '-': case '\0': break; default: if (!isalnum(card->snd_card->driver[i])) card->snd_card->driver[i] = '_'; break; } } if (card->late_probe) { ret = card->late_probe(card); if (ret < 0) { dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n", card->name, ret); goto probe_aux_dev_err; } } snd_soc_dapm_new_widgets(card); ret = snd_card_register(card->snd_card); if (ret < 0) { dev_err(card->dev, "ASoC: failed to register soundcard %d\n", ret); goto probe_aux_dev_err; } card->instantiated = 1; dapm_mark_endpoints_dirty(card); snd_soc_dapm_sync(&card->dapm); mutex_unlock(&card->mutex); mutex_unlock(&client_mutex); return 0; probe_aux_dev_err: soc_remove_aux_devices(card); probe_dai_err: soc_remove_dai_links(card); card_probe_error: if (card->remove) card->remove(card); snd_soc_dapm_free(&card->dapm); soc_cleanup_card_debugfs(card); snd_card_free(card->snd_card); base_error: soc_remove_pcm_runtimes(card); mutex_unlock(&card->mutex); mutex_unlock(&client_mutex); return ret; } /* probes a new socdev */ static int soc_probe(struct platform_device *pdev) { struct snd_soc_card *card = platform_get_drvdata(pdev); /* * no card, so machine driver should be registering card * we should not be here in that case so ret error */ if (!card) return -EINVAL; dev_warn(&pdev->dev, "ASoC: machine %s should use snd_soc_register_card()\n", card->name); /* Bodge while we unpick instantiation */ card->dev = &pdev->dev; return snd_soc_register_card(card); } static int soc_cleanup_card_resources(struct snd_soc_card *card) { struct snd_soc_pcm_runtime *rtd; /* make sure any delayed work runs */ for_each_card_rtds(card, rtd) flush_delayed_work(&rtd->delayed_work); /* free the ALSA card at first; this syncs with pending operations */ snd_card_free(card->snd_card); /* remove and free each DAI */ soc_remove_dai_links(card); soc_remove_pcm_runtimes(card); /* remove auxiliary devices */ soc_remove_aux_devices(card); snd_soc_dapm_free(&card->dapm); soc_cleanup_card_debugfs(card); /* remove the card */ if (card->remove) card->remove(card); return 0; } /* removes a socdev */ static int soc_remove(struct platform_device *pdev) { struct snd_soc_card *card = platform_get_drvdata(pdev); snd_soc_unregister_card(card); return 0; } int snd_soc_poweroff(struct device *dev) { struct snd_soc_card *card = dev_get_drvdata(dev); struct snd_soc_pcm_runtime *rtd; if (!card->instantiated) return 0; /* * Flush out pmdown_time work - we actually do want to run it * now, we're shutting down so no imminent restart. */ for_each_card_rtds(card, rtd) flush_delayed_work(&rtd->delayed_work); snd_soc_dapm_shutdown(card); /* deactivate pins to sleep state */ for_each_card_rtds(card, rtd) { struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai; int i; pinctrl_pm_select_sleep_state(cpu_dai->dev); for_each_rtd_codec_dai(rtd, i, codec_dai) { pinctrl_pm_select_sleep_state(codec_dai->dev); } } return 0; } EXPORT_SYMBOL_GPL(snd_soc_poweroff); const struct dev_pm_ops snd_soc_pm_ops = { .suspend = snd_soc_suspend, .resume = snd_soc_resume, .freeze = snd_soc_suspend, .thaw = snd_soc_resume, .poweroff = snd_soc_poweroff, .restore = snd_soc_resume, }; EXPORT_SYMBOL_GPL(snd_soc_pm_ops); /* ASoC platform driver */ static struct platform_driver soc_driver = { .driver = { .name = "soc-audio", .pm = &snd_soc_pm_ops, }, .probe = soc_probe, .remove = soc_remove, }; /** * snd_soc_cnew - create new control * @_template: control template * @data: control private data * @long_name: control long name * @prefix: control name prefix * * Create a new mixer control from a template control. * * Returns 0 for success, else error. */ struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, void *data, const char *long_name, const char *prefix) { struct snd_kcontrol_new template; struct snd_kcontrol *kcontrol; char *name = NULL; memcpy(&template, _template, sizeof(template)); template.index = 0; if (!long_name) long_name = template.name; if (prefix) { name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name); if (!name) return NULL; template.name = name; } else { template.name = long_name; } kcontrol = snd_ctl_new1(&template, data); kfree(name); return kcontrol; } EXPORT_SYMBOL_GPL(snd_soc_cnew); static int snd_soc_add_controls(struct snd_card *card, struct device *dev, const struct snd_kcontrol_new *controls, int num_controls, const char *prefix, void *data) { int err, i; for (i = 0; i < num_controls; i++) { const struct snd_kcontrol_new *control = &controls[i]; err = snd_ctl_add(card, snd_soc_cnew(control, data, control->name, prefix)); if (err < 0) { dev_err(dev, "ASoC: Failed to add %s: %d\n", control->name, err); return err; } } return 0; } struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card, const char *name) { struct snd_card *card = soc_card->snd_card; struct snd_kcontrol *kctl; if (unlikely(!name)) return NULL; list_for_each_entry(kctl, &card->controls, list) if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) return kctl; return NULL; } EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol); /** * snd_soc_add_component_controls - Add an array of controls to a component. * * @component: Component to add controls to * @controls: Array of controls to add * @num_controls: Number of elements in the array * * Return: 0 for success, else error. */ int snd_soc_add_component_controls(struct snd_soc_component *component, const struct snd_kcontrol_new *controls, unsigned int num_controls) { struct snd_card *card = component->card->snd_card; return snd_soc_add_controls(card, component->dev, controls, num_controls, component->name_prefix, component); } EXPORT_SYMBOL_GPL(snd_soc_add_component_controls); /** * snd_soc_add_card_controls - add an array of controls to a SoC card. * Convenience function to add a list of controls. * * @soc_card: SoC card to add controls to * @controls: array of controls to add * @num_controls: number of elements in the array * * Return 0 for success, else error. */ int snd_soc_add_card_controls(struct snd_soc_card *soc_card, const struct snd_kcontrol_new *controls, int num_controls) { struct snd_card *card = soc_card->snd_card; return snd_soc_add_controls(card, soc_card->dev, controls, num_controls, NULL, soc_card); } EXPORT_SYMBOL_GPL(snd_soc_add_card_controls); /** * snd_soc_add_dai_controls - add an array of controls to a DAI. * Convienience function to add a list of controls. * * @dai: DAI to add controls to * @controls: array of controls to add * @num_controls: number of elements in the array * * Return 0 for success, else error. */ int snd_soc_add_dai_controls(struct snd_soc_dai *dai, const struct snd_kcontrol_new *controls, int num_controls) { struct snd_card *card = dai->component->card->snd_card; return snd_soc_add_controls(card, dai->dev, controls, num_controls, NULL, dai); } EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls); /** * snd_soc_dai_set_sysclk - configure DAI system or master clock. * @dai: DAI * @clk_id: DAI specific clock ID * @freq: new clock frequency in Hz * @dir: new clock direction - input/output. * * Configures the DAI master (MCLK) or system (SYSCLK) clocking. */ int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int freq, int dir) { if (dai->driver->ops->set_sysclk) return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir); return snd_soc_component_set_sysclk(dai->component, clk_id, 0, freq, dir); } EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); /** * snd_soc_component_set_sysclk - configure COMPONENT system or master clock. * @component: COMPONENT * @clk_id: DAI specific clock ID * @source: Source for the clock * @freq: new clock frequency in Hz * @dir: new clock direction - input/output. * * Configures the CODEC master (MCLK) or system (SYSCLK) clocking. */ int snd_soc_component_set_sysclk(struct snd_soc_component *component, int clk_id, int source, unsigned int freq, int dir) { if (component->driver->set_sysclk) return component->driver->set_sysclk(component, clk_id, source, freq, dir); return -ENOTSUPP; } EXPORT_SYMBOL_GPL(snd_soc_component_set_sysclk); /** * snd_soc_dai_set_clkdiv - configure DAI clock dividers. * @dai: DAI * @div_id: DAI specific clock divider ID * @div: new clock divisor. * * Configures the clock dividers. This is used to derive the best DAI bit and * frame clocks from the system or master clock. It's best to set the DAI bit * and frame clocks as low as possible to save system power. */ int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, int div_id, int div) { if (dai->driver->ops->set_clkdiv) return dai->driver->ops->set_clkdiv(dai, div_id, div); else return -EINVAL; } EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); /** * snd_soc_dai_set_pll - configure DAI PLL. * @dai: DAI * @pll_id: DAI specific PLL ID * @source: DAI specific source for the PLL * @freq_in: PLL input clock frequency in Hz * @freq_out: requested PLL output clock frequency in Hz * * Configures and enables PLL to generate output clock based on input clock. */ int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source, unsigned int freq_in, unsigned int freq_out) { if (dai->driver->ops->set_pll) return dai->driver->ops->set_pll(dai, pll_id, source, freq_in, freq_out); return snd_soc_component_set_pll(dai->component, pll_id, source, freq_in, freq_out); } EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); /* * snd_soc_component_set_pll - configure component PLL. * @component: COMPONENT * @pll_id: DAI specific PLL ID * @source: DAI specific source for the PLL * @freq_in: PLL input clock frequency in Hz * @freq_out: requested PLL output clock frequency in Hz * * Configures and enables PLL to generate output clock based on input clock. */ int snd_soc_component_set_pll(struct snd_soc_component *component, int pll_id, int source, unsigned int freq_in, unsigned int freq_out) { if (component->driver->set_pll) return component->driver->set_pll(component, pll_id, source, freq_in, freq_out); return -EINVAL; } EXPORT_SYMBOL_GPL(snd_soc_component_set_pll); /** * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio. * @dai: DAI * @ratio: Ratio of BCLK to Sample rate. * * Configures the DAI for a preset BCLK to sample rate ratio. */ int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio) { if (dai->driver->ops->set_bclk_ratio) return dai->driver->ops->set_bclk_ratio(dai, ratio); else return -EINVAL; } EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio); /** * snd_soc_dai_set_fmt - configure DAI hardware audio format. * @dai: DAI * @fmt: SND_SOC_DAIFMT_* format value. * * Configures the DAI hardware format and clocking. */ int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) { if (dai->driver->ops->set_fmt == NULL) return -ENOTSUPP; return dai->driver->ops->set_fmt(dai, fmt); } EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); /** * snd_soc_xlate_tdm_slot - generate tx/rx slot mask. * @slots: Number of slots in use. * @tx_mask: bitmask representing active TX slots. * @rx_mask: bitmask representing active RX slots. * * Generates the TDM tx and rx slot default masks for DAI. */ static int snd_soc_xlate_tdm_slot_mask(unsigned int slots, unsigned int *tx_mask, unsigned int *rx_mask) { if (*tx_mask || *rx_mask) return 0; if (!slots) return -EINVAL; *tx_mask = (1 << slots) - 1; *rx_mask = (1 << slots) - 1; return 0; } /** * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation * @dai: The DAI to configure * @tx_mask: bitmask representing active TX slots. * @rx_mask: bitmask representing active RX slots. * @slots: Number of slots in use. * @slot_width: Width in bits for each slot. * * This function configures the specified DAI for TDM operation. @slot contains * the total number of slots of the TDM stream and @slot_with the width of each * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the * active slots of the TDM stream for the specified DAI, i.e. which slots the * DAI should write to or read from. If a bit is set the corresponding slot is * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to * the first slot, bit 1 to the second slot and so on. The first active slot * maps to the first channel of the DAI, the second active slot to the second * channel and so on. * * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask, * @rx_mask and @slot_width will be ignored. * * Returns 0 on success, a negative error code otherwise. */ int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) { if (dai->driver->ops->xlate_tdm_slot_mask) dai->driver->ops->xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask); else snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask); dai->tx_mask = tx_mask; dai->rx_mask = rx_mask; if (dai->driver->ops->set_tdm_slot) return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask, slots, slot_width); else return -ENOTSUPP; } EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); /** * snd_soc_dai_set_channel_map - configure DAI audio channel map * @dai: DAI * @tx_num: how many TX channels * @tx_slot: pointer to an array which imply the TX slot number channel * 0~num-1 uses * @rx_num: how many RX channels * @rx_slot: pointer to an array which imply the RX slot number channel * 0~num-1 uses * * configure the relationship between channel number and TDM slot number. */ int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai, unsigned int tx_num, unsigned int *tx_slot, unsigned int rx_num, unsigned int *rx_slot) { if (dai->driver->ops->set_channel_map) return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot, rx_num, rx_slot); else return -EINVAL; } EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map); /** * snd_soc_dai_get_channel_map - Get DAI audio channel map * @dai: DAI * @tx_num: how many TX channels * @tx_slot: pointer to an array which imply the TX slot number channel * 0~num-1 uses * @rx_num: how many RX channels * @rx_slot: pointer to an array which imply the RX slot number channel * 0~num-1 uses */ int snd_soc_dai_get_channel_map(struct snd_soc_dai *dai, unsigned int *tx_num, unsigned int *tx_slot, unsigned int *rx_num, unsigned int *rx_slot) { if (dai->driver->ops->get_channel_map) return dai->driver->ops->get_channel_map(dai, tx_num, tx_slot, rx_num, rx_slot); else return -ENOTSUPP; } EXPORT_SYMBOL_GPL(snd_soc_dai_get_channel_map); /** * snd_soc_dai_set_tristate - configure DAI system or master clock. * @dai: DAI * @tristate: tristate enable * * Tristates the DAI so that others can use it. */ int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) { if (dai->driver->ops->set_tristate) return dai->driver->ops->set_tristate(dai, tristate); else return -EINVAL; } EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); /** * snd_soc_dai_digital_mute - configure DAI system or master clock. * @dai: DAI * @mute: mute enable * @direction: stream to mute * * Mutes the DAI DAC. */ int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute, int direction) { if (dai->driver->ops->mute_stream) return dai->driver->ops->mute_stream(dai, mute, direction); else if (direction == SNDRV_PCM_STREAM_PLAYBACK && dai->driver->ops->digital_mute) return dai->driver->ops->digital_mute(dai, mute); else return -ENOTSUPP; } EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); static int snd_soc_bind_card(struct snd_soc_card *card) { struct snd_soc_pcm_runtime *rtd; int ret; ret = snd_soc_instantiate_card(card); if (ret != 0) return ret; /* deactivate pins to sleep state */ for_each_card_rtds(card, rtd) { struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai; int j; for_each_rtd_codec_dai(rtd, j, codec_dai) { if (!codec_dai->active) pinctrl_pm_select_sleep_state(codec_dai->dev); } if (!cpu_dai->active) pinctrl_pm_select_sleep_state(cpu_dai->dev); } return ret; } /** * snd_soc_register_card - Register a card with the ASoC core * * @card: Card to register * */ int snd_soc_register_card(struct snd_soc_card *card) { int i, ret; struct snd_soc_dai_link *link; if (!card->name || !card->dev) return -EINVAL; mutex_lock(&client_mutex); for_each_card_prelinks(card, i, link) { ret = soc_init_dai_link(card, link); if (ret) { dev_err(card->dev, "ASoC: failed to init link %s\n", link->name); mutex_unlock(&client_mutex); return ret; } } mutex_unlock(&client_mutex); dev_set_drvdata(card->dev, card); snd_soc_initialize_card_lists(card); INIT_LIST_HEAD(&card->dai_link_list); INIT_LIST_HEAD(&card->rtd_list); card->num_rtd = 0; INIT_LIST_HEAD(&card->dapm_dirty); INIT_LIST_HEAD(&card->dobj_list); card->instantiated = 0; mutex_init(&card->mutex); mutex_init(&card->dapm_mutex); return snd_soc_bind_card(card); } EXPORT_SYMBOL_GPL(snd_soc_register_card); static void snd_soc_unbind_card(struct snd_soc_card *card, bool unregister) { if (card->instantiated) { card->instantiated = false; snd_soc_dapm_shutdown(card); soc_cleanup_card_resources(card); if (!unregister) list_add(&card->list, &unbind_card_list); } else { if (unregister) list_del(&card->list); } } /** * snd_soc_unregister_card - Unregister a card with the ASoC core * * @card: Card to unregister * */ int snd_soc_unregister_card(struct snd_soc_card *card) { snd_soc_unbind_card(card, true); dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name); return 0; } EXPORT_SYMBOL_GPL(snd_soc_unregister_card); /* * Simplify DAI link configuration by removing ".-1" from device names * and sanitizing names. */ static char *fmt_single_name(struct device *dev, int *id) { char *found, name[NAME_SIZE]; int id1, id2; if (dev_name(dev) == NULL) return NULL; strlcpy(name, dev_name(dev), NAME_SIZE); /* are we a "%s.%d" name (platform and SPI components) */ found = strstr(name, dev->driver->name); if (found) { /* get ID */ if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) { /* discard ID from name if ID == -1 */ if (*id == -1) found[strlen(dev->driver->name)] = '\0'; } } else { /* I2C component devices are named "bus-addr" */ if (sscanf(name, "%x-%x", &id1, &id2) == 2) { char tmp[NAME_SIZE]; /* create unique ID number from I2C addr and bus */ *id = ((id1 & 0xffff) << 16) + id2; /* sanitize component name for DAI link creation */ snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name); strlcpy(name, tmp, NAME_SIZE); } else *id = 0; } return kstrdup(name, GFP_KERNEL); } /* * Simplify DAI link naming for single devices with multiple DAIs by removing * any ".-1" and using the DAI name (instead of device name). */ static inline char *fmt_multiple_name(struct device *dev, struct snd_soc_dai_driver *dai_drv) { if (dai_drv->name == NULL) { dev_err(dev, "ASoC: error - multiple DAI %s registered with no name\n", dev_name(dev)); return NULL; } return kstrdup(dai_drv->name, GFP_KERNEL); } /** * snd_soc_unregister_dai - Unregister DAIs from the ASoC core * * @component: The component for which the DAIs should be unregistered */ static void snd_soc_unregister_dais(struct snd_soc_component *component) { struct snd_soc_dai *dai, *_dai; for_each_component_dais_safe(component, dai, _dai) { dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n", dai->name); list_del(&dai->list); kfree(dai->name); kfree(dai); } } /* Create a DAI and add it to the component's DAI list */ static struct snd_soc_dai *soc_add_dai(struct snd_soc_component *component, struct snd_soc_dai_driver *dai_drv, bool legacy_dai_naming) { struct device *dev = component->dev; struct snd_soc_dai *dai; dev_dbg(dev, "ASoC: dynamically register DAI %s\n", dev_name(dev)); dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL); if (dai == NULL) return NULL; /* * Back in the old days when we still had component-less DAIs, * instead of having a static name, component-less DAIs would * inherit the name of the parent device so it is possible to * register multiple instances of the DAI. We still need to keep * the same naming style even though those DAIs are not * component-less anymore. */ if (legacy_dai_naming && (dai_drv->id == 0 || dai_drv->name == NULL)) { dai->name = fmt_single_name(dev, &dai->id); } else { dai->name = fmt_multiple_name(dev, dai_drv); if (dai_drv->id) dai->id = dai_drv->id; else dai->id = component->num_dai; } if (dai->name == NULL) { kfree(dai); return NULL; } dai->component = component; dai->dev = dev; dai->driver = dai_drv; if (!dai->driver->ops) dai->driver->ops = &null_dai_ops; /* see for_each_component_dais */ list_add_tail(&dai->list, &component->dai_list); component->num_dai++; dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name); return dai; } /** * snd_soc_register_dais - Register a DAI with the ASoC core * * @component: The component the DAIs are registered for * @dai_drv: DAI driver to use for the DAIs * @count: Number of DAIs */ static int snd_soc_register_dais(struct snd_soc_component *component, struct snd_soc_dai_driver *dai_drv, size_t count) { struct device *dev = component->dev; struct snd_soc_dai *dai; unsigned int i; int ret; dev_dbg(dev, "ASoC: dai register %s #%zu\n", dev_name(dev), count); for (i = 0; i < count; i++) { dai = soc_add_dai(component, dai_drv + i, count == 1 && !component->driver->non_legacy_dai_naming); if (dai == NULL) { ret = -ENOMEM; goto err; } } return 0; err: snd_soc_unregister_dais(component); return ret; } /** * snd_soc_register_dai - Register a DAI dynamically & create its widgets * * @component: The component the DAIs are registered for * @dai_drv: DAI driver to use for the DAI * * Topology can use this API to register DAIs when probing a component. * These DAIs's widgets will be freed in the card cleanup and the DAIs * will be freed in the component cleanup. */ int snd_soc_register_dai(struct snd_soc_component *component, struct snd_soc_dai_driver *dai_drv) { struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); struct snd_soc_dai *dai; int ret; if (dai_drv->dobj.type != SND_SOC_DOBJ_PCM) { dev_err(component->dev, "Invalid dai type %d\n", dai_drv->dobj.type); return -EINVAL; } lockdep_assert_held(&client_mutex); dai = soc_add_dai(component, dai_drv, false); if (!dai) return -ENOMEM; /* * Create the DAI widgets here. After adding DAIs, topology may * also add routes that need these widgets as source or sink. */ ret = snd_soc_dapm_new_dai_widgets(dapm, dai); if (ret != 0) { dev_err(component->dev, "Failed to create DAI widgets %d\n", ret); } return ret; } EXPORT_SYMBOL_GPL(snd_soc_register_dai); static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context *dapm, enum snd_soc_dapm_type type, int subseq) { struct snd_soc_component *component = dapm->component; component->driver->seq_notifier(component, type, subseq); } static int snd_soc_component_stream_event(struct snd_soc_dapm_context *dapm, int event) { struct snd_soc_component *component = dapm->component; return component->driver->stream_event(component, event); } static int snd_soc_component_set_bias_level(struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level) { struct snd_soc_component *component = dapm->component; return component->driver->set_bias_level(component, level); } static int snd_soc_component_initialize(struct snd_soc_component *component, const struct snd_soc_component_driver *driver, struct device *dev) { struct snd_soc_dapm_context *dapm; component->name = fmt_single_name(dev, &component->id); if (!component->name) { dev_err(dev, "ASoC: Failed to allocate name\n"); return -ENOMEM; } component->dev = dev; component->driver = driver; dapm = snd_soc_component_get_dapm(component); dapm->dev = dev; dapm->component = component; dapm->bias_level = SND_SOC_BIAS_OFF; dapm->idle_bias_off = !driver->idle_bias_on; dapm->suspend_bias_off = driver->suspend_bias_off; if (driver->seq_notifier) dapm->seq_notifier = snd_soc_component_seq_notifier; if (driver->stream_event) dapm->stream_event = snd_soc_component_stream_event; if (driver->set_bias_level) dapm->set_bias_level = snd_soc_component_set_bias_level; INIT_LIST_HEAD(&component->dai_list); mutex_init(&component->io_mutex); return 0; } static void snd_soc_component_setup_regmap(struct snd_soc_component *component) { int val_bytes = regmap_get_val_bytes(component->regmap); /* Errors are legitimate for non-integer byte multiples */ if (val_bytes > 0) component->val_bytes = val_bytes; } #ifdef CONFIG_REGMAP /** * snd_soc_component_init_regmap() - Initialize regmap instance for the * component * @component: The component for which to initialize the regmap instance * @regmap: The regmap instance that should be used by the component * * This function allows deferred assignment of the regmap instance that is * associated with the component. Only use this if the regmap instance is not * yet ready when the component is registered. The function must also be called * before the first IO attempt of the component. */ void snd_soc_component_init_regmap(struct snd_soc_component *component, struct regmap *regmap) { component->regmap = regmap; snd_soc_component_setup_regmap(component); } EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap); /** * snd_soc_component_exit_regmap() - De-initialize regmap instance for the * component * @component: The component for which to de-initialize the regmap instance * * Calls regmap_exit() on the regmap instance associated to the component and * removes the regmap instance from the component. * * This function should only be used if snd_soc_component_init_regmap() was used * to initialize the regmap instance. */ void snd_soc_component_exit_regmap(struct snd_soc_component *component) { regmap_exit(component->regmap); component->regmap = NULL; } EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap); #endif static void snd_soc_component_add(struct snd_soc_component *component) { mutex_lock(&client_mutex); if (!component->driver->write && !component->driver->read) { if (!component->regmap) component->regmap = dev_get_regmap(component->dev, NULL); if (component->regmap) snd_soc_component_setup_regmap(component); } /* see for_each_component */ list_add(&component->list, &component_list); INIT_LIST_HEAD(&component->dobj_list); mutex_unlock(&client_mutex); } static void snd_soc_component_cleanup(struct snd_soc_component *component) { snd_soc_unregister_dais(component); kfree(component->name); } static void snd_soc_component_del_unlocked(struct snd_soc_component *component) { struct snd_soc_card *card = component->card; if (card) snd_soc_unbind_card(card, false); list_del(&component->list); } #define ENDIANNESS_MAP(name) \ (SNDRV_PCM_FMTBIT_##name##LE | SNDRV_PCM_FMTBIT_##name##BE) static u64 endianness_format_map[] = { ENDIANNESS_MAP(S16_), ENDIANNESS_MAP(U16_), ENDIANNESS_MAP(S24_), ENDIANNESS_MAP(U24_), ENDIANNESS_MAP(S32_), ENDIANNESS_MAP(U32_), ENDIANNESS_MAP(S24_3), ENDIANNESS_MAP(U24_3), ENDIANNESS_MAP(S20_3), ENDIANNESS_MAP(U20_3), ENDIANNESS_MAP(S18_3), ENDIANNESS_MAP(U18_3), ENDIANNESS_MAP(FLOAT_), ENDIANNESS_MAP(FLOAT64_), ENDIANNESS_MAP(IEC958_SUBFRAME_), }; /* * Fix up the DAI formats for endianness: codecs don't actually see * the endianness of the data but we're using the CPU format * definitions which do need to include endianness so we ensure that * codec DAIs always have both big and little endian variants set. */ static void convert_endianness_formats(struct snd_soc_pcm_stream *stream) { int i; for (i = 0; i < ARRAY_SIZE(endianness_format_map); i++) if (stream->formats & endianness_format_map[i]) stream->formats |= endianness_format_map[i]; } static void snd_soc_try_rebind_card(void) { struct snd_soc_card *card, *c; if (!list_empty(&unbind_card_list)) { list_for_each_entry_safe(card, c, &unbind_card_list, list) { if (!snd_soc_bind_card(card)) list_del(&card->list); } } } int snd_soc_add_component(struct device *dev, struct snd_soc_component *component, const struct snd_soc_component_driver *component_driver, struct snd_soc_dai_driver *dai_drv, int num_dai) { int ret; int i; ret = snd_soc_component_initialize(component, component_driver, dev); if (ret) goto err_free; if (component_driver->endianness) { for (i = 0; i < num_dai; i++) { convert_endianness_formats(&dai_drv[i].playback); convert_endianness_formats(&dai_drv[i].capture); } } ret = snd_soc_register_dais(component, dai_drv, num_dai); if (ret < 0) { dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret); goto err_cleanup; } snd_soc_component_add(component); snd_soc_try_rebind_card(); return 0; err_cleanup: snd_soc_component_cleanup(component); err_free: return ret; } EXPORT_SYMBOL_GPL(snd_soc_add_component); int snd_soc_register_component(struct device *dev, const struct snd_soc_component_driver *component_driver, struct snd_soc_dai_driver *dai_drv, int num_dai) { struct snd_soc_component *component; component = devm_kzalloc(dev, sizeof(*component), GFP_KERNEL); if (!component) return -ENOMEM; return snd_soc_add_component(dev, component, component_driver, dai_drv, num_dai); } EXPORT_SYMBOL_GPL(snd_soc_register_component); /** * snd_soc_unregister_component - Unregister all related component * from the ASoC core * * @dev: The device to unregister */ static int __snd_soc_unregister_component(struct device *dev) { struct snd_soc_component *component; int found = 0; mutex_lock(&client_mutex); for_each_component(component) { if (dev != component->dev) continue; snd_soc_tplg_component_remove(component, SND_SOC_TPLG_INDEX_ALL); snd_soc_component_del_unlocked(component); found = 1; break; } mutex_unlock(&client_mutex); if (found) snd_soc_component_cleanup(component); return found; } void snd_soc_unregister_component(struct device *dev) { while (__snd_soc_unregister_component(dev)) ; } EXPORT_SYMBOL_GPL(snd_soc_unregister_component); struct snd_soc_component *snd_soc_lookup_component(struct device *dev, const char *driver_name) { struct snd_soc_component *component; struct snd_soc_component *ret; ret = NULL; mutex_lock(&client_mutex); for_each_component(component) { if (dev != component->dev) continue; if (driver_name && (driver_name != component->driver->name) && (strcmp(component->driver->name, driver_name) != 0)) continue; ret = component; break; } mutex_unlock(&client_mutex); return ret; } EXPORT_SYMBOL_GPL(snd_soc_lookup_component); /* Retrieve a card's name from device tree */ int snd_soc_of_parse_card_name(struct snd_soc_card *card, const char *propname) { struct device_node *np; int ret; if (!card->dev) { pr_err("card->dev is not set before calling %s\n", __func__); return -EINVAL; } np = card->dev->of_node; ret = of_property_read_string_index(np, propname, 0, &card->name); /* * EINVAL means the property does not exist. This is fine providing * card->name was previously set, which is checked later in * snd_soc_register_card. */ if (ret < 0 && ret != -EINVAL) { dev_err(card->dev, "ASoC: Property '%s' could not be read: %d\n", propname, ret); return ret; } return 0; } EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name); static const struct snd_soc_dapm_widget simple_widgets[] = { SND_SOC_DAPM_MIC("Microphone", NULL), SND_SOC_DAPM_LINE("Line", NULL), SND_SOC_DAPM_HP("Headphone", NULL), SND_SOC_DAPM_SPK("Speaker", NULL), }; int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card, const char *propname) { struct device_node *np = card->dev->of_node; struct snd_soc_dapm_widget *widgets; const char *template, *wname; int i, j, num_widgets, ret; num_widgets = of_property_count_strings(np, propname); if (num_widgets < 0) { dev_err(card->dev, "ASoC: Property '%s' does not exist\n", propname); return -EINVAL; } if (num_widgets & 1) { dev_err(card->dev, "ASoC: Property '%s' length is not even\n", propname); return -EINVAL; } num_widgets /= 2; if (!num_widgets) { dev_err(card->dev, "ASoC: Property '%s's length is zero\n", propname); return -EINVAL; } widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets), GFP_KERNEL); if (!widgets) { dev_err(card->dev, "ASoC: Could not allocate memory for widgets\n"); return -ENOMEM; } for (i = 0; i < num_widgets; i++) { ret = of_property_read_string_index(np, propname, 2 * i, &template); if (ret) { dev_err(card->dev, "ASoC: Property '%s' index %d read error:%d\n", propname, 2 * i, ret); return -EINVAL; } for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) { if (!strncmp(template, simple_widgets[j].name, strlen(simple_widgets[j].name))) { widgets[i] = simple_widgets[j]; break; } } if (j >= ARRAY_SIZE(simple_widgets)) { dev_err(card->dev, "ASoC: DAPM widget '%s' is not supported\n", template); return -EINVAL; } ret = of_property_read_string_index(np, propname, (2 * i) + 1, &wname); if (ret) { dev_err(card->dev, "ASoC: Property '%s' index %d read error:%d\n", propname, (2 * i) + 1, ret); return -EINVAL; } widgets[i].name = wname; } card->of_dapm_widgets = widgets; card->num_of_dapm_widgets = num_widgets; return 0; } EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets); int snd_soc_of_get_slot_mask(struct device_node *np, const char *prop_name, unsigned int *mask) { u32 val; const __be32 *of_slot_mask = of_get_property(np, prop_name, &val); int i; if (!of_slot_mask) return 0; val /= sizeof(u32); for (i = 0; i < val; i++) if (be32_to_cpup(&of_slot_mask[i])) *mask |= (1 << i); return val; } EXPORT_SYMBOL_GPL(snd_soc_of_get_slot_mask); int snd_soc_of_parse_tdm_slot(struct device_node *np, unsigned int *tx_mask, unsigned int *rx_mask, unsigned int *slots, unsigned int *slot_width) { u32 val; int ret; if (tx_mask) snd_soc_of_get_slot_mask(np, "dai-tdm-slot-tx-mask", tx_mask); if (rx_mask) snd_soc_of_get_slot_mask(np, "dai-tdm-slot-rx-mask", rx_mask); if (of_property_read_bool(np, "dai-tdm-slot-num")) { ret = of_property_read_u32(np, "dai-tdm-slot-num", &val); if (ret) return ret; if (slots) *slots = val; } if (of_property_read_bool(np, "dai-tdm-slot-width")) { ret = of_property_read_u32(np, "dai-tdm-slot-width", &val); if (ret) return ret; if (slot_width) *slot_width = val; } return 0; } EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot); void snd_soc_of_parse_node_prefix(struct device_node *np, struct snd_soc_codec_conf *codec_conf, struct device_node *of_node, const char *propname) { const char *str; int ret; ret = of_property_read_string(np, propname, &str); if (ret < 0) { /* no prefix is not error */ return; } codec_conf->of_node = of_node; codec_conf->name_prefix = str; } EXPORT_SYMBOL_GPL(snd_soc_of_parse_node_prefix); int snd_soc_of_parse_audio_routing(struct snd_soc_card *card, const char *propname) { struct device_node *np = card->dev->of_node; int num_routes; struct snd_soc_dapm_route *routes; int i, ret; num_routes = of_property_count_strings(np, propname); if (num_routes < 0 || num_routes & 1) { dev_err(card->dev, "ASoC: Property '%s' does not exist or its length is not even\n", propname); return -EINVAL; } num_routes /= 2; if (!num_routes) { dev_err(card->dev, "ASoC: Property '%s's length is zero\n", propname); return -EINVAL; } routes = devm_kcalloc(card->dev, num_routes, sizeof(*routes), GFP_KERNEL); if (!routes) { dev_err(card->dev, "ASoC: Could not allocate DAPM route table\n"); return -EINVAL; } for (i = 0; i < num_routes; i++) { ret = of_property_read_string_index(np, propname, 2 * i, &routes[i].sink); if (ret) { dev_err(card->dev, "ASoC: Property '%s' index %d could not be read: %d\n", propname, 2 * i, ret); return -EINVAL; } ret = of_property_read_string_index(np, propname, (2 * i) + 1, &routes[i].source); if (ret) { dev_err(card->dev, "ASoC: Property '%s' index %d could not be read: %d\n", propname, (2 * i) + 1, ret); return -EINVAL; } } card->num_of_dapm_routes = num_routes; card->of_dapm_routes = routes; return 0; } EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing); unsigned int snd_soc_of_parse_daifmt(struct device_node *np, const char *prefix, struct device_node **bitclkmaster, struct device_node **framemaster) { int ret, i; char prop[128]; unsigned int format = 0; int bit, frame; const char *str; struct { char *name; unsigned int val; } of_fmt_table[] = { { "i2s", SND_SOC_DAIFMT_I2S }, { "right_j", SND_SOC_DAIFMT_RIGHT_J }, { "left_j", SND_SOC_DAIFMT_LEFT_J }, { "dsp_a", SND_SOC_DAIFMT_DSP_A }, { "dsp_b", SND_SOC_DAIFMT_DSP_B }, { "ac97", SND_SOC_DAIFMT_AC97 }, { "pdm", SND_SOC_DAIFMT_PDM}, { "msb", SND_SOC_DAIFMT_MSB }, { "lsb", SND_SOC_DAIFMT_LSB }, }; if (!prefix) prefix = ""; /* * check "dai-format = xxx" * or "[prefix]format = xxx" * SND_SOC_DAIFMT_FORMAT_MASK area */ ret = of_property_read_string(np, "dai-format", &str); if (ret < 0) { snprintf(prop, sizeof(prop), "%sformat", prefix); ret = of_property_read_string(np, prop, &str); } if (ret == 0) { for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) { if (strcmp(str, of_fmt_table[i].name) == 0) { format |= of_fmt_table[i].val; break; } } } /* * check "[prefix]continuous-clock" * SND_SOC_DAIFMT_CLOCK_MASK area */ snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix); if (of_property_read_bool(np, prop)) format |= SND_SOC_DAIFMT_CONT; else format |= SND_SOC_DAIFMT_GATED; /* * check "[prefix]bitclock-inversion" * check "[prefix]frame-inversion" * SND_SOC_DAIFMT_INV_MASK area */ snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix); bit = !!of_get_property(np, prop, NULL); snprintf(prop, sizeof(prop), "%sframe-inversion", prefix); frame = !!of_get_property(np, prop, NULL); switch ((bit << 4) + frame) { case 0x11: format |= SND_SOC_DAIFMT_IB_IF; break; case 0x10: format |= SND_SOC_DAIFMT_IB_NF; break; case 0x01: format |= SND_SOC_DAIFMT_NB_IF; break; default: /* SND_SOC_DAIFMT_NB_NF is default */ break; } /* * check "[prefix]bitclock-master" * check "[prefix]frame-master" * SND_SOC_DAIFMT_MASTER_MASK area */ snprintf(prop, sizeof(prop), "%sbitclock-master", prefix); bit = !!of_get_property(np, prop, NULL); if (bit && bitclkmaster) *bitclkmaster = of_parse_phandle(np, prop, 0); snprintf(prop, sizeof(prop), "%sframe-master", prefix); frame = !!of_get_property(np, prop, NULL); if (frame && framemaster) *framemaster = of_parse_phandle(np, prop, 0); switch ((bit << 4) + frame) { case 0x11: format |= SND_SOC_DAIFMT_CBM_CFM; break; case 0x10: format |= SND_SOC_DAIFMT_CBM_CFS; break; case 0x01: format |= SND_SOC_DAIFMT_CBS_CFM; break; default: format |= SND_SOC_DAIFMT_CBS_CFS; break; } return format; } EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt); int snd_soc_get_dai_id(struct device_node *ep) { struct snd_soc_component *pos; struct device_node *node; int ret; node = of_graph_get_port_parent(ep); /* * For example HDMI case, HDMI has video/sound port, * but ALSA SoC needs sound port number only. * Thus counting HDMI DT port/endpoint doesn't work. * Then, it should have .of_xlate_dai_id */ ret = -ENOTSUPP; mutex_lock(&client_mutex); for_each_component(pos) { struct device_node *component_of_node = pos->dev->of_node; if (!component_of_node && pos->dev->parent) component_of_node = pos->dev->parent->of_node; if (component_of_node != node) continue; if (pos->driver->of_xlate_dai_id) ret = pos->driver->of_xlate_dai_id(pos, ep); break; } mutex_unlock(&client_mutex); of_node_put(node); return ret; } EXPORT_SYMBOL_GPL(snd_soc_get_dai_id); int snd_soc_get_dai_name(struct of_phandle_args *args, const char **dai_name) { struct snd_soc_component *pos; struct device_node *component_of_node; int ret = -EPROBE_DEFER; mutex_lock(&client_mutex); for_each_component(pos) { component_of_node = pos->dev->of_node; if (!component_of_node && pos->dev->parent) component_of_node = pos->dev->parent->of_node; if (component_of_node != args->np) continue; if (pos->driver->of_xlate_dai_name) { ret = pos->driver->of_xlate_dai_name(pos, args, dai_name); } else { struct snd_soc_dai *dai; int id = -1; switch (args->args_count) { case 0: id = 0; /* same as dai_drv[0] */ break; case 1: id = args->args[0]; break; default: /* not supported */ break; } if (id < 0 || id >= pos->num_dai) { ret = -EINVAL; continue; } ret = 0; /* find target DAI */ for_each_component_dais(pos, dai) { if (id == 0) break; id--; } *dai_name = dai->driver->name; if (!*dai_name) *dai_name = pos->name; } break; } mutex_unlock(&client_mutex); return ret; } EXPORT_SYMBOL_GPL(snd_soc_get_dai_name); int snd_soc_of_get_dai_name(struct device_node *of_node, const char **dai_name) { struct of_phandle_args args; int ret; ret = of_parse_phandle_with_args(of_node, "sound-dai", "#sound-dai-cells", 0, &args); if (ret) return ret; ret = snd_soc_get_dai_name(&args, dai_name); of_node_put(args.np); return ret; } EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name); /* * snd_soc_of_put_dai_link_codecs - Dereference device nodes in the codecs array * @dai_link: DAI link * * Dereference device nodes acquired by snd_soc_of_get_dai_link_codecs(). */ void snd_soc_of_put_dai_link_codecs(struct snd_soc_dai_link *dai_link) { struct snd_soc_dai_link_component *component; int index; for_each_link_codecs(dai_link, index, component) { if (!component->of_node) break; of_node_put(component->of_node); component->of_node = NULL; } } EXPORT_SYMBOL_GPL(snd_soc_of_put_dai_link_codecs); /* * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree * @dev: Card device * @of_node: Device node * @dai_link: DAI link * * Builds an array of CODEC DAI components from the DAI link property * 'sound-dai'. * The array is set in the DAI link and the number of DAIs is set accordingly. * The device nodes in the array (of_node) must be dereferenced by calling * snd_soc_of_put_dai_link_codecs() on @dai_link. * * Returns 0 for success */ int snd_soc_of_get_dai_link_codecs(struct device *dev, struct device_node *of_node, struct snd_soc_dai_link *dai_link) { struct of_phandle_args args; struct snd_soc_dai_link_component *component; char *name; int index, num_codecs, ret; /* Count the number of CODECs */ name = "sound-dai"; num_codecs = of_count_phandle_with_args(of_node, name, "#sound-dai-cells"); if (num_codecs <= 0) { if (num_codecs == -ENOENT) dev_err(dev, "No 'sound-dai' property\n"); else dev_err(dev, "Bad phandle in 'sound-dai'\n"); return num_codecs; } component = devm_kcalloc(dev, num_codecs, sizeof(*component), GFP_KERNEL); if (!component) return -ENOMEM; dai_link->codecs = component; dai_link->num_codecs = num_codecs; /* Parse the list */ for_each_link_codecs(dai_link, index, component) { ret = of_parse_phandle_with_args(of_node, name, "#sound-dai-cells", index, &args); if (ret) goto err; component->of_node = args.np; ret = snd_soc_get_dai_name(&args, &component->dai_name); if (ret < 0) goto err; } return 0; err: snd_soc_of_put_dai_link_codecs(dai_link); dai_link->codecs = NULL; dai_link->num_codecs = 0; return ret; } EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs); static int __init snd_soc_init(void) { snd_soc_debugfs_init(); snd_soc_util_init(); return platform_driver_register(&soc_driver); } module_init(snd_soc_init); static void __exit snd_soc_exit(void) { snd_soc_util_exit(); snd_soc_debugfs_exit(); platform_driver_unregister(&soc_driver); } module_exit(snd_soc_exit); /* Module information */ MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); MODULE_DESCRIPTION("ALSA SoC Core"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:soc-audio");
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