/* * 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 * with code, comments and ideas from :- * Richard Purdie * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define CREATE_TRACE_POINTS #include #define NAME_SIZE 32 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); #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(dai_list); static LIST_HEAD(platform_list); static LIST_HEAD(codec_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)"); /* returns the minimum number of bytes needed to represent * a particular given value */ static int min_bytes_needed(unsigned long val) { int c = 0; int i; for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c) if (val & (1UL << i)) break; c = (sizeof val * 8) - c; if (!c || (c % 8)) c = (c + 8) / 8; else c /= 8; return c; } /* fill buf which is 'len' bytes with a formatted * string of the form 'reg: value\n' */ static int format_register_str(struct snd_soc_codec *codec, unsigned int reg, char *buf, size_t len) { int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2; int regsize = codec->driver->reg_word_size * 2; int ret; char tmpbuf[len + 1]; char regbuf[regsize + 1]; /* since tmpbuf is allocated on the stack, warn the callers if they * try to abuse this function */ WARN_ON(len > 63); /* +2 for ': ' and + 1 for '\n' */ if (wordsize + regsize + 2 + 1 != len) return -EINVAL; ret = snd_soc_read(codec, reg); if (ret < 0) { memset(regbuf, 'X', regsize); regbuf[regsize] = '\0'; } else { snprintf(regbuf, regsize + 1, "%.*x", regsize, ret); } /* prepare the buffer */ snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf); /* copy it back to the caller without the '\0' */ memcpy(buf, tmpbuf, len); return 0; } /* codec register dump */ static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf, size_t count, loff_t pos) { int i, step = 1; int wordsize, regsize; int len; size_t total = 0; loff_t p = 0; wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2; regsize = codec->driver->reg_word_size * 2; len = wordsize + regsize + 2 + 1; if (!codec->driver->reg_cache_size) return 0; if (codec->driver->reg_cache_step) step = codec->driver->reg_cache_step; for (i = 0; i < codec->driver->reg_cache_size; i += step) { if (!snd_soc_codec_readable_register(codec, i)) continue; if (codec->driver->display_register) { count += codec->driver->display_register(codec, buf + count, PAGE_SIZE - count, i); } else { /* only support larger than PAGE_SIZE bytes debugfs * entries for the default case */ if (p >= pos) { if (total + len >= count - 1) break; format_register_str(codec, i, buf + total, len); total += len; } p += len; } } total = min(total, count - 1); return total; } static ssize_t codec_reg_show(struct device *dev, struct device_attribute *attr, char *buf) { struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0); } static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); 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 = strict_strtol(buf, 10, &rtd->pmdown_time); if (ret) return ret; return count; } static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set); #ifdef CONFIG_DEBUG_FS static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { ssize_t ret; struct snd_soc_codec *codec = file->private_data; char *buf; if (*ppos < 0 || !count) return -EINVAL; buf = kmalloc(count, GFP_KERNEL); if (!buf) return -ENOMEM; ret = soc_codec_reg_show(codec, buf, count, *ppos); if (ret >= 0) { if (copy_to_user(user_buf, buf, ret)) { kfree(buf); return -EFAULT; } *ppos += ret; } kfree(buf); return ret; } static ssize_t codec_reg_write_file(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { char buf[32]; size_t buf_size; char *start = buf; unsigned long reg, value; struct snd_soc_codec *codec = file->private_data; buf_size = min(count, (sizeof(buf)-1)); if (copy_from_user(buf, user_buf, buf_size)) return -EFAULT; buf[buf_size] = 0; while (*start == ' ') start++; reg = simple_strtoul(start, &start, 16); while (*start == ' ') start++; if (strict_strtoul(start, 16, &value)) return -EINVAL; /* Userspace has been fiddling around behind the kernel's back */ add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE); snd_soc_write(codec, reg, value); return buf_size; } static const struct file_operations codec_reg_fops = { .open = simple_open, .read = codec_reg_read_file, .write = codec_reg_write_file, .llseek = default_llseek, }; static void soc_init_codec_debugfs(struct snd_soc_codec *codec) { struct dentry *debugfs_card_root = codec->card->debugfs_card_root; codec->debugfs_codec_root = debugfs_create_dir(codec->name, debugfs_card_root); if (!codec->debugfs_codec_root) { dev_warn(codec->dev, "ASoC: Failed to create codec debugfs" " directory\n"); return; } debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root, &codec->cache_sync); debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root, &codec->cache_only); codec->debugfs_reg = debugfs_create_file("codec_reg", 0644, codec->debugfs_codec_root, codec, &codec_reg_fops); if (!codec->debugfs_reg) dev_warn(codec->dev, "ASoC: Failed to create codec register" " debugfs file\n"); snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root); } static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) { debugfs_remove_recursive(codec->debugfs_codec_root); } static void soc_init_platform_debugfs(struct snd_soc_platform *platform) { struct dentry *debugfs_card_root = platform->card->debugfs_card_root; platform->debugfs_platform_root = debugfs_create_dir(platform->name, debugfs_card_root); if (!platform->debugfs_platform_root) { dev_warn(platform->dev, "ASoC: Failed to create platform debugfs directory\n"); return; } snd_soc_dapm_debugfs_init(&platform->dapm, platform->debugfs_platform_root); } static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform) { debugfs_remove_recursive(platform->debugfs_platform_root); } static ssize_t codec_list_read_file(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); ssize_t len, ret = 0; struct snd_soc_codec *codec; if (!buf) return -ENOMEM; list_for_each_entry(codec, &codec_list, list) { len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", codec->name); if (len >= 0) ret += len; if (ret > PAGE_SIZE) { ret = PAGE_SIZE; break; } } if (ret >= 0) ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); kfree(buf); return ret; } static const struct file_operations codec_list_fops = { .read = codec_list_read_file, .llseek = default_llseek,/* read accesses f_pos */ }; static ssize_t dai_list_read_file(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); ssize_t len, ret = 0; struct snd_soc_dai *dai; if (!buf) return -ENOMEM; list_for_each_entry(dai, &dai_list, list) { len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name); if (len >= 0) ret += len; if (ret > PAGE_SIZE) { ret = PAGE_SIZE; break; } } ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); kfree(buf); return ret; } static const struct file_operations dai_list_fops = { .read = dai_list_read_file, .llseek = default_llseek,/* read accesses f_pos */ }; static ssize_t platform_list_read_file(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); ssize_t len, ret = 0; struct snd_soc_platform *platform; if (!buf) return -ENOMEM; list_for_each_entry(platform, &platform_list, list) { len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", platform->name); if (len >= 0) ret += len; if (ret > PAGE_SIZE) { ret = PAGE_SIZE; break; } } ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); kfree(buf); return ret; } static const struct file_operations platform_list_fops = { .read = platform_list_read_file, .llseek = default_llseek,/* read accesses f_pos */ }; static void soc_init_card_debugfs(struct snd_soc_card *card) { 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); } #else static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec) { } static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) { } static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform) { } static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform) { } static inline void soc_init_card_debugfs(struct snd_soc_card *card) { } static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card) { } #endif struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card, const char *dai_link, int stream) { int i; for (i = 0; i < card->num_links; i++) { if (card->rtd[i].dai_link->no_pcm && !strcmp(card->rtd[i].dai_link->name, dai_link)) return card->rtd[i].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); struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card, const char *dai_link) { int i; for (i = 0; i < card->num_links; i++) { if (!strcmp(card->rtd[i].dai_link->name, dai_link)) return &card->rtd[i]; } dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link); return NULL; } EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime); #ifdef CONFIG_SND_SOC_AC97_BUS /* unregister ac97 codec */ static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) { if (codec->ac97->dev.bus) device_unregister(&codec->ac97->dev); return 0; } /* stop no dev release warning */ static void soc_ac97_device_release(struct device *dev){} /* register ac97 codec to bus */ static int soc_ac97_dev_register(struct snd_soc_codec *codec) { int err; codec->ac97->dev.bus = &ac97_bus_type; codec->ac97->dev.parent = codec->card->dev; codec->ac97->dev.release = soc_ac97_device_release; dev_set_name(&codec->ac97->dev, "%d-%d:%s", codec->card->snd_card->number, 0, codec->name); err = device_register(&codec->ac97->dev); if (err < 0) { dev_err(codec->dev, "ASoC: Can't register ac97 bus\n"); codec->ac97->dev.bus = NULL; return err; } return 0; } #endif #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_codec *codec; int i; /* If the initialization of this soc device failed, there is no codec * associated with it. Just bail out in this case. */ if (list_empty(&card->codec_dev_list)) 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_lock(card->snd_card); snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0); snd_power_unlock(card->snd_card); /* 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 (i = 0; i < card->num_rtd; i++) { struct snd_soc_dai *dai = card->rtd[i].codec_dai; struct snd_soc_dai_driver *drv = dai->driver; if (card->rtd[i].dai_link->ignore_suspend) continue; if (drv->ops->digital_mute && dai->playback_active) drv->ops->digital_mute(dai, 1); } /* suspend all pcms */ for (i = 0; i < card->num_rtd; i++) { if (card->rtd[i].dai_link->ignore_suspend) continue; snd_pcm_suspend_all(card->rtd[i].pcm); } if (card->suspend_pre) card->suspend_pre(card); for (i = 0; i < card->num_rtd; i++) { struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; struct snd_soc_platform *platform = card->rtd[i].platform; if (card->rtd[i].dai_link->ignore_suspend) continue; if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control) cpu_dai->driver->suspend(cpu_dai); if (platform->driver->suspend && !platform->suspended) { platform->driver->suspend(cpu_dai); platform->suspended = 1; } } /* close any waiting streams and save state */ for (i = 0; i < card->num_rtd; i++) { flush_delayed_work(&card->rtd[i].delayed_work); card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level; } for (i = 0; i < card->num_rtd; i++) { if (card->rtd[i].dai_link->ignore_suspend) continue; snd_soc_dapm_stream_event(&card->rtd[i], SNDRV_PCM_STREAM_PLAYBACK, SND_SOC_DAPM_STREAM_SUSPEND); snd_soc_dapm_stream_event(&card->rtd[i], SNDRV_PCM_STREAM_CAPTURE, SND_SOC_DAPM_STREAM_SUSPEND); } /* Recheck all analogue paths too */ dapm_mark_io_dirty(&card->dapm); snd_soc_dapm_sync(&card->dapm); /* suspend all CODECs */ list_for_each_entry(codec, &card->codec_dev_list, card_list) { /* If there are paths active then the CODEC will be held with * bias _ON and should not be suspended. */ if (!codec->suspended && codec->driver->suspend) { switch (codec->dapm.bias_level) { case SND_SOC_BIAS_STANDBY: /* * If the CODEC is capable of idle * bias off then being in STANDBY * means it's doing something, * otherwise fall through. */ if (codec->dapm.idle_bias_off) { dev_dbg(codec->dev, "ASoC: idle_bias_off CODEC on" " over suspend\n"); break; } case SND_SOC_BIAS_OFF: codec->driver->suspend(codec); codec->suspended = 1; codec->cache_sync = 1; if (codec->using_regmap) regcache_mark_dirty(codec->control_data); break; default: dev_dbg(codec->dev, "ASoC: CODEC is on" " over suspend\n"); break; } } } for (i = 0; i < card->num_rtd; i++) { struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; if (card->rtd[i].dai_link->ignore_suspend) continue; if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control) cpu_dai->driver->suspend(cpu_dai); } 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_codec *codec; 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 AC97 DAIs */ for (i = 0; i < card->num_rtd; i++) { struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; if (card->rtd[i].dai_link->ignore_suspend) continue; if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control) cpu_dai->driver->resume(cpu_dai); } list_for_each_entry(codec, &card->codec_dev_list, card_list) { /* If the CODEC was idle over suspend then it will have been * left with bias OFF or STANDBY and suspended so we must now * resume. Otherwise the suspend was suppressed. */ if (codec->driver->resume && codec->suspended) { switch (codec->dapm.bias_level) { case SND_SOC_BIAS_STANDBY: case SND_SOC_BIAS_OFF: codec->driver->resume(codec); codec->suspended = 0; break; default: dev_dbg(codec->dev, "ASoC: CODEC was on over" " suspend\n"); break; } } } for (i = 0; i < card->num_rtd; i++) { if (card->rtd[i].dai_link->ignore_suspend) continue; snd_soc_dapm_stream_event(&card->rtd[i], SNDRV_PCM_STREAM_PLAYBACK, SND_SOC_DAPM_STREAM_RESUME); snd_soc_dapm_stream_event(&card->rtd[i], SNDRV_PCM_STREAM_CAPTURE, SND_SOC_DAPM_STREAM_RESUME); } /* unmute any active DACs */ for (i = 0; i < card->num_rtd; i++) { struct snd_soc_dai *dai = card->rtd[i].codec_dai; struct snd_soc_dai_driver *drv = dai->driver; if (card->rtd[i].dai_link->ignore_suspend) continue; if (drv->ops->digital_mute && dai->playback_active) drv->ops->digital_mute(dai, 0); } for (i = 0; i < card->num_rtd; i++) { struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; struct snd_soc_platform *platform = card->rtd[i].platform; if (card->rtd[i].dai_link->ignore_suspend) continue; if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control) cpu_dai->driver->resume(cpu_dai); if (platform->driver->resume && platform->suspended) { platform->driver->resume(cpu_dai); platform->suspended = 0; } } if (card->resume_post) card->resume_post(card); dev_dbg(card->dev, "ASoC: resume work completed\n"); /* userspace can access us now we are back as we were before */ snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0); /* Recheck all analogue paths too */ dapm_mark_io_dirty(&card->dapm); snd_soc_dapm_sync(&card->dapm); } /* powers up audio subsystem after a suspend */ int snd_soc_resume(struct device *dev) { struct snd_soc_card *card = dev_get_drvdata(dev); int i, ac97_control = 0; /* If the initialization of this soc device failed, there is no codec * associated with it. Just bail out in this case. */ if (list_empty(&card->codec_dev_list)) return 0; /* AC97 devices 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 (i = 0; i < card->num_rtd; i++) { struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; ac97_control |= cpu_dai->driver->ac97_control; } if (ac97_control) { dev_dbg(dev, "ASoC: Resuming AC97 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 int soc_bind_dai_link(struct snd_soc_card *card, int num) { struct snd_soc_dai_link *dai_link = &card->dai_link[num]; struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; struct snd_soc_codec *codec; struct snd_soc_platform *platform; struct snd_soc_dai *codec_dai, *cpu_dai; const char *platform_name; dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num); /* Find CPU DAI from registered DAIs*/ list_for_each_entry(cpu_dai, &dai_list, list) { if (dai_link->cpu_of_node && (cpu_dai->dev->of_node != dai_link->cpu_of_node)) continue; if (dai_link->cpu_name && strcmp(dev_name(cpu_dai->dev), dai_link->cpu_name)) continue; if (dai_link->cpu_dai_name && strcmp(cpu_dai->name, dai_link->cpu_dai_name)) continue; rtd->cpu_dai = cpu_dai; } if (!rtd->cpu_dai) { dev_err(card->dev, "ASoC: CPU DAI %s not registered\n", dai_link->cpu_dai_name); return -EPROBE_DEFER; } /* Find CODEC from registered CODECs */ list_for_each_entry(codec, &codec_list, list) { if (dai_link->codec_of_node) { if (codec->dev->of_node != dai_link->codec_of_node) continue; } else { if (strcmp(codec->name, dai_link->codec_name)) continue; } rtd->codec = codec; /* * CODEC found, so find CODEC DAI from registered DAIs from * this CODEC */ list_for_each_entry(codec_dai, &dai_list, list) { if (codec->dev == codec_dai->dev && !strcmp(codec_dai->name, dai_link->codec_dai_name)) { rtd->codec_dai = codec_dai; } } if (!rtd->codec_dai) { dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n", dai_link->codec_dai_name); return -EPROBE_DEFER; } } if (!rtd->codec) { dev_err(card->dev, "ASoC: CODEC %s not registered\n", dai_link->codec_name); return -EPROBE_DEFER; } /* if there's no platform we match on the empty platform */ platform_name = dai_link->platform_name; if (!platform_name && !dai_link->platform_of_node) platform_name = "snd-soc-dummy"; /* find one from the set of registered platforms */ list_for_each_entry(platform, &platform_list, list) { if (dai_link->platform_of_node) { if (platform->dev->of_node != dai_link->platform_of_node) continue; } else { if (strcmp(platform->name, platform_name)) continue; } rtd->platform = platform; } if (!rtd->platform) { dev_err(card->dev, "ASoC: platform %s not registered\n", dai_link->platform_name); return -EPROBE_DEFER; } card->num_rtd++; return 0; } static int soc_remove_platform(struct snd_soc_platform *platform) { int ret; if (platform->driver->remove) { ret = platform->driver->remove(platform); if (ret < 0) dev_err(platform->dev, "ASoC: failed to remove %d\n", ret); } /* Make sure all DAPM widgets are freed */ snd_soc_dapm_free(&platform->dapm); soc_cleanup_platform_debugfs(platform); platform->probed = 0; list_del(&platform->card_list); module_put(platform->dev->driver->owner); return 0; } static void soc_remove_codec(struct snd_soc_codec *codec) { int err; if (codec->driver->remove) { err = codec->driver->remove(codec); if (err < 0) dev_err(codec->dev, "ASoC: failed to remove %d\n", err); } /* Make sure all DAPM widgets are freed */ snd_soc_dapm_free(&codec->dapm); soc_cleanup_codec_debugfs(codec); codec->probed = 0; list_del(&codec->card_list); module_put(codec->dev->driver->owner); } static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order) { struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai; int err; /* unregister the rtd device */ if (rtd->dev_registered) { device_remove_file(rtd->dev, &dev_attr_pmdown_time); device_remove_file(rtd->dev, &dev_attr_codec_reg); device_unregister(rtd->dev); rtd->dev_registered = 0; } /* remove the CODEC DAI */ if (codec_dai && codec_dai->probed && codec_dai->driver->remove_order == order) { if (codec_dai->driver->remove) { err = codec_dai->driver->remove(codec_dai); if (err < 0) dev_err(codec_dai->dev, "ASoC: failed to remove %s: %d\n", codec_dai->name, err); } codec_dai->probed = 0; list_del(&codec_dai->card_list); } /* remove the cpu_dai */ if (cpu_dai && cpu_dai->probed && cpu_dai->driver->remove_order == order) { if (cpu_dai->driver->remove) { err = cpu_dai->driver->remove(cpu_dai); if (err < 0) dev_err(cpu_dai->dev, "ASoC: failed to remove %s: %d\n", cpu_dai->name, err); } cpu_dai->probed = 0; list_del(&cpu_dai->card_list); if (!cpu_dai->codec) { snd_soc_dapm_free(&cpu_dai->dapm); module_put(cpu_dai->dev->driver->owner); } } } static void soc_remove_link_components(struct snd_soc_card *card, int num, int order) { struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai = rtd->codec_dai; struct snd_soc_platform *platform = rtd->platform; struct snd_soc_codec *codec; /* remove the platform */ if (platform && platform->probed && platform->driver->remove_order == order) { soc_remove_platform(platform); } /* remove the CODEC-side CODEC */ if (codec_dai) { codec = codec_dai->codec; if (codec && codec->probed && codec->driver->remove_order == order) soc_remove_codec(codec); } /* remove any CPU-side CODEC */ if (cpu_dai) { codec = cpu_dai->codec; if (codec && codec->probed && codec->driver->remove_order == order) soc_remove_codec(codec); } } static void soc_remove_dai_links(struct snd_soc_card *card) { int dai, order; for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; order++) { for (dai = 0; dai < card->num_rtd; dai++) soc_remove_link_dais(card, dai, order); } for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; order++) { for (dai = 0; dai < card->num_rtd; dai++) soc_remove_link_components(card, dai, order); } card->num_rtd = 0; } static void soc_set_name_prefix(struct snd_soc_card *card, struct snd_soc_codec *codec) { int i; if (card->codec_conf == NULL) return; for (i = 0; i < card->num_configs; i++) { struct snd_soc_codec_conf *map = &card->codec_conf[i]; if (map->dev_name && !strcmp(codec->name, map->dev_name)) { codec->name_prefix = map->name_prefix; break; } } } static int soc_probe_codec(struct snd_soc_card *card, struct snd_soc_codec *codec) { int ret = 0; const struct snd_soc_codec_driver *driver = codec->driver; struct snd_soc_dai *dai; codec->card = card; codec->dapm.card = card; soc_set_name_prefix(card, codec); if (!try_module_get(codec->dev->driver->owner)) return -ENODEV; soc_init_codec_debugfs(codec); if (driver->dapm_widgets) snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets, driver->num_dapm_widgets); /* Create DAPM widgets for each DAI stream */ list_for_each_entry(dai, &dai_list, list) { if (dai->dev != codec->dev) continue; snd_soc_dapm_new_dai_widgets(&codec->dapm, dai); } codec->dapm.idle_bias_off = driver->idle_bias_off; if (driver->probe) { ret = driver->probe(codec); if (ret < 0) { dev_err(codec->dev, "ASoC: failed to probe CODEC %d\n", ret); goto err_probe; } WARN(codec->dapm.idle_bias_off && codec->dapm.bias_level != SND_SOC_BIAS_OFF, "codec %s can not start from non-off bias" " with idle_bias_off==1\n", codec->name); } /* If the driver didn't set I/O up try regmap */ if (!codec->write && dev_get_regmap(codec->dev, NULL)) snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP); if (driver->controls) snd_soc_add_codec_controls(codec, driver->controls, driver->num_controls); if (driver->dapm_routes) snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes, driver->num_dapm_routes); /* mark codec as probed and add to card codec list */ codec->probed = 1; list_add(&codec->card_list, &card->codec_dev_list); list_add(&codec->dapm.list, &card->dapm_list); return 0; err_probe: soc_cleanup_codec_debugfs(codec); module_put(codec->dev->driver->owner); return ret; } static int soc_probe_platform(struct snd_soc_card *card, struct snd_soc_platform *platform) { int ret = 0; const struct snd_soc_platform_driver *driver = platform->driver; struct snd_soc_dai *dai; platform->card = card; platform->dapm.card = card; if (!try_module_get(platform->dev->driver->owner)) return -ENODEV; soc_init_platform_debugfs(platform); if (driver->dapm_widgets) snd_soc_dapm_new_controls(&platform->dapm, driver->dapm_widgets, driver->num_dapm_widgets); /* Create DAPM widgets for each DAI stream */ list_for_each_entry(dai, &dai_list, list) { if (dai->dev != platform->dev) continue; snd_soc_dapm_new_dai_widgets(&platform->dapm, dai); } platform->dapm.idle_bias_off = 1; if (driver->probe) { ret = driver->probe(platform); if (ret < 0) { dev_err(platform->dev, "ASoC: failed to probe platform %d\n", ret); goto err_probe; } } if (driver->controls) snd_soc_add_platform_controls(platform, driver->controls, driver->num_controls); if (driver->dapm_routes) snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes, driver->num_dapm_routes); /* mark platform as probed and add to card platform list */ platform->probed = 1; list_add(&platform->card_list, &card->platform_dev_list); list_add(&platform->dapm.list, &card->dapm_list); return 0; err_probe: soc_cleanup_platform_debugfs(platform); module_put(platform->dev->driver->owner); return ret; } static void rtd_release(struct device *dev) { kfree(dev); } static int soc_post_component_init(struct snd_soc_card *card, struct snd_soc_codec *codec, int num, int dailess) { struct snd_soc_dai_link *dai_link = NULL; struct snd_soc_aux_dev *aux_dev = NULL; struct snd_soc_pcm_runtime *rtd; const char *temp, *name; int ret = 0; if (!dailess) { dai_link = &card->dai_link[num]; rtd = &card->rtd[num]; name = dai_link->name; } else { aux_dev = &card->aux_dev[num]; rtd = &card->rtd_aux[num]; name = aux_dev->name; } rtd->card = card; /* Make sure all DAPM widgets are instantiated */ snd_soc_dapm_new_widgets(&codec->dapm); /* machine controls, routes and widgets are not prefixed */ temp = codec->name_prefix; codec->name_prefix = NULL; /* do machine specific initialization */ if (!dailess && dai_link->init) ret = dai_link->init(rtd); else if (dailess && aux_dev->init) ret = aux_dev->init(&codec->dapm); if (ret < 0) { dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret); return ret; } codec->name_prefix = temp; /* register the rtd device */ rtd->codec = codec; rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL); if (!rtd->dev) return -ENOMEM; device_initialize(rtd->dev); rtd->dev->parent = card->dev; rtd->dev->release = rtd_release; rtd->dev->init_name = 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(card->dev, "ASoC: failed to register runtime device: %d\n", ret); return ret; } rtd->dev_registered = 1; /* add DAPM sysfs entries for this codec */ ret = snd_soc_dapm_sys_add(rtd->dev); if (ret < 0) dev_err(codec->dev, "ASoC: failed to add codec dapm sysfs entries: %d\n", ret); /* add codec sysfs entries */ ret = device_create_file(rtd->dev, &dev_attr_codec_reg); if (ret < 0) dev_err(codec->dev, "ASoC: failed to add codec sysfs files: %d\n", ret); #ifdef CONFIG_DEBUG_FS /* add DPCM sysfs entries */ if (!dailess && !dai_link->dynamic) goto out; ret = soc_dpcm_debugfs_add(rtd); if (ret < 0) dev_err(rtd->dev, "ASoC: failed to add dpcm sysfs entries: %d\n", ret); out: #endif return 0; } static int soc_probe_link_components(struct snd_soc_card *card, int num, int order) { struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai = rtd->codec_dai; struct snd_soc_platform *platform = rtd->platform; int ret; /* probe the CPU-side component, if it is a CODEC */ if (cpu_dai->codec && !cpu_dai->codec->probed && cpu_dai->codec->driver->probe_order == order) { ret = soc_probe_codec(card, cpu_dai->codec); if (ret < 0) return ret; } /* probe the CODEC-side component */ if (!codec_dai->codec->probed && codec_dai->codec->driver->probe_order == order) { ret = soc_probe_codec(card, codec_dai->codec); if (ret < 0) return ret; } /* probe the platform */ if (!platform->probed && platform->driver->probe_order == order) { ret = soc_probe_platform(card, platform); if (ret < 0) return ret; } return 0; } static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order) { struct snd_soc_dai_link *dai_link = &card->dai_link[num]; struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; struct snd_soc_codec *codec = rtd->codec; struct snd_soc_platform *platform = rtd->platform; struct snd_soc_dai *codec_dai = rtd->codec_dai; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dapm_widget *play_w, *capture_w; int ret; dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n", card->name, num, order); /* config components */ cpu_dai->platform = platform; codec_dai->card = card; cpu_dai->card = card; /* set default power off timeout */ rtd->pmdown_time = pmdown_time; /* probe the cpu_dai */ if (!cpu_dai->probed && cpu_dai->driver->probe_order == order) { if (!cpu_dai->codec) { cpu_dai->dapm.card = card; if (!try_module_get(cpu_dai->dev->driver->owner)) return -ENODEV; list_add(&cpu_dai->dapm.list, &card->dapm_list); snd_soc_dapm_new_dai_widgets(&cpu_dai->dapm, cpu_dai); } if (cpu_dai->driver->probe) { ret = cpu_dai->driver->probe(cpu_dai); if (ret < 0) { dev_err(cpu_dai->dev, "ASoC: failed to probe CPU DAI %s: %d\n", cpu_dai->name, ret); module_put(cpu_dai->dev->driver->owner); return ret; } } cpu_dai->probed = 1; /* mark cpu_dai as probed and add to card dai list */ list_add(&cpu_dai->card_list, &card->dai_dev_list); } /* probe the CODEC DAI */ if (!codec_dai->probed && codec_dai->driver->probe_order == order) { if (codec_dai->driver->probe) { ret = codec_dai->driver->probe(codec_dai); if (ret < 0) { dev_err(codec_dai->dev, "ASoC: failed to probe CODEC DAI %s: %d\n", codec_dai->name, ret); return ret; } } /* mark codec_dai as probed and add to card dai list */ codec_dai->probed = 1; list_add(&codec_dai->card_list, &card->dai_dev_list); } /* complete DAI probe during last probe */ if (order != SND_SOC_COMP_ORDER_LAST) return 0; ret = soc_post_component_init(card, codec, num, 0); if (ret) return ret; ret = device_create_file(rtd->dev, &dev_attr_pmdown_time); if (ret < 0) dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n", ret); if (cpu_dai->driver->compress_dai) { /*create compress_device"*/ ret = soc_new_compress(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; } } else { /* link the DAI widgets */ play_w = codec_dai->playback_widget; capture_w = cpu_dai->capture_widget; if (play_w && capture_w) { ret = snd_soc_dapm_new_pcm(card, dai_link->params, capture_w, play_w); if (ret != 0) { dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n", play_w->name, capture_w->name, ret); return ret; } } play_w = cpu_dai->playback_widget; capture_w = codec_dai->capture_widget; if (play_w && capture_w) { ret = snd_soc_dapm_new_pcm(card, dai_link->params, capture_w, play_w); if (ret != 0) { dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n", play_w->name, capture_w->name, ret); return ret; } } } } /* add platform data for AC97 devices */ if (rtd->codec_dai->driver->ac97_control) snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata); return 0; } #ifdef CONFIG_SND_SOC_AC97_BUS static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd) { int ret; /* Only instantiate AC97 if not already done by the adaptor * for the generic AC97 subsystem. */ if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) { /* * It is possible that the AC97 device is already registered to * the device subsystem. This happens when the device is created * via snd_ac97_mixer(). Currently only SoC codec that does so * is the generic AC97 glue but others migh emerge. * * In those cases we don't try to register the device again. */ if (!rtd->codec->ac97_created) return 0; ret = soc_ac97_dev_register(rtd->codec); if (ret < 0) { dev_err(rtd->codec->dev, "ASoC: AC97 device register failed: %d\n", ret); return ret; } rtd->codec->ac97_registered = 1; } return 0; } static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec) { if (codec->ac97_registered) { soc_ac97_dev_unregister(codec); codec->ac97_registered = 0; } } #endif static int soc_check_aux_dev(struct snd_soc_card *card, int num) { struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num]; struct snd_soc_codec *codec; /* find CODEC from registered CODECs*/ list_for_each_entry(codec, &codec_list, list) { if (!strcmp(codec->name, aux_dev->codec_name)) return 0; } dev_err(card->dev, "ASoC: %s not registered\n", aux_dev->codec_name); return -EPROBE_DEFER; } static int soc_probe_aux_dev(struct snd_soc_card *card, int num) { struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num]; struct snd_soc_codec *codec; int ret = -ENODEV; /* find CODEC from registered CODECs*/ list_for_each_entry(codec, &codec_list, list) { if (!strcmp(codec->name, aux_dev->codec_name)) { if (codec->probed) { dev_err(codec->dev, "ASoC: codec already probed"); ret = -EBUSY; goto out; } goto found; } } /* codec not found */ dev_err(card->dev, "ASoC: codec %s not found", aux_dev->codec_name); return -EPROBE_DEFER; found: ret = soc_probe_codec(card, codec); if (ret < 0) return ret; ret = soc_post_component_init(card, codec, num, 1); out: return ret; } static void soc_remove_aux_dev(struct snd_soc_card *card, int num) { struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num]; struct snd_soc_codec *codec = rtd->codec; /* unregister the rtd device */ if (rtd->dev_registered) { device_remove_file(rtd->dev, &dev_attr_codec_reg); device_unregister(rtd->dev); rtd->dev_registered = 0; } if (codec && codec->probed) soc_remove_codec(codec); } static int snd_soc_init_codec_cache(struct snd_soc_codec *codec, enum snd_soc_compress_type compress_type) { int ret; if (codec->cache_init) return 0; /* override the compress_type if necessary */ if (compress_type && codec->compress_type != compress_type) codec->compress_type = compress_type; ret = snd_soc_cache_init(codec); if (ret < 0) { dev_err(codec->dev, "ASoC: Failed to set cache compression" " type: %d\n", ret); return ret; } codec->cache_init = 1; return 0; } static int snd_soc_instantiate_card(struct snd_soc_card *card) { struct snd_soc_codec *codec; struct snd_soc_codec_conf *codec_conf; enum snd_soc_compress_type compress_type; struct snd_soc_dai_link *dai_link; int ret, i, order, dai_fmt; mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT); /* bind DAIs */ for (i = 0; i < card->num_links; i++) { ret = soc_bind_dai_link(card, i); if (ret != 0) goto base_error; } /* check aux_devs too */ for (i = 0; i < card->num_aux_devs; i++) { ret = soc_check_aux_dev(card, i); if (ret != 0) goto base_error; } /* initialize the register cache for each available codec */ list_for_each_entry(codec, &codec_list, list) { if (codec->cache_init) continue; /* by default we don't override the compress_type */ compress_type = 0; /* check to see if we need to override the compress_type */ for (i = 0; i < card->num_configs; ++i) { codec_conf = &card->codec_conf[i]; if (!strcmp(codec->name, codec_conf->dev_name)) { compress_type = codec_conf->compress_type; if (compress_type && compress_type != codec->compress_type) break; } } ret = snd_soc_init_codec_cache(codec, compress_type); if (ret < 0) goto base_error; } /* card bind complete so register a sound card */ ret = snd_card_create(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; } card->snd_card->dev = card->dev; 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); /* 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 (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; order++) { for (i = 0; i < card->num_links; i++) { ret = soc_probe_link_components(card, i, order); if (ret < 0) { dev_err(card->dev, "ASoC: failed to instantiate card %d\n", ret); goto probe_dai_err; } } } /* probe all DAI links on this card */ for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; order++) { for (i = 0; i < card->num_links; i++) { ret = soc_probe_link_dais(card, i, order); if (ret < 0) { dev_err(card->dev, "ASoC: failed to instantiate card %d\n", ret); goto probe_dai_err; } } } for (i = 0; i < card->num_aux_devs; i++) { ret = soc_probe_aux_dev(card, i); if (ret < 0) { dev_err(card->dev, "ASoC: failed to add auxiliary devices %d\n", ret); goto probe_aux_dev_err; } } snd_soc_dapm_link_dai_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); snd_soc_dapm_new_widgets(&card->dapm); for (i = 0; i < card->num_links; i++) { dai_link = &card->dai_link[i]; dai_fmt = dai_link->dai_fmt; if (dai_fmt) { ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai, dai_fmt); if (ret != 0 && ret != -ENOTSUPP) dev_warn(card->rtd[i].codec_dai->dev, "ASoC: Failed to set DAI format: %d\n", ret); } /* If this is a regular CPU link there will be a platform */ if (dai_fmt && (dai_link->platform_name || dai_link->platform_of_node)) { ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai, dai_fmt); if (ret != 0 && ret != -ENOTSUPP) dev_warn(card->rtd[i].cpu_dai->dev, "ASoC: Failed to set DAI format: %d\n", ret); } else if (dai_fmt) { /* Flip the polarity for the "CPU" end */ dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK; switch (dai_link->dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBM_CFM: dai_fmt |= SND_SOC_DAIFMT_CBS_CFS; break; case SND_SOC_DAIFMT_CBM_CFS: dai_fmt |= SND_SOC_DAIFMT_CBS_CFM; break; case SND_SOC_DAIFMT_CBS_CFM: dai_fmt |= SND_SOC_DAIFMT_CBM_CFS; break; case SND_SOC_DAIFMT_CBS_CFS: dai_fmt |= SND_SOC_DAIFMT_CBM_CFM; break; } ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai, dai_fmt); if (ret != 0 && ret != -ENOTSUPP) dev_warn(card->rtd[i].cpu_dai->dev, "ASoC: Failed to set DAI format: %d\n", ret); } } 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->dapm); if (card->fully_routed) list_for_each_entry(codec, &card->codec_dev_list, card_list) snd_soc_dapm_auto_nc_codec_pins(codec); 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; } #ifdef CONFIG_SND_SOC_AC97_BUS /* register any AC97 codecs */ for (i = 0; i < card->num_rtd; i++) { ret = soc_register_ac97_dai_link(&card->rtd[i]); if (ret < 0) { dev_err(card->dev, "ASoC: failed to register AC97:" " %d\n", ret); while (--i >= 0) soc_unregister_ac97_dai_link(card->rtd[i].codec); goto probe_aux_dev_err; } } #endif card->instantiated = 1; snd_soc_dapm_sync(&card->dapm); mutex_unlock(&card->mutex); return 0; probe_aux_dev_err: for (i = 0; i < card->num_aux_devs; i++) soc_remove_aux_dev(card, i); probe_dai_err: soc_remove_dai_links(card); card_probe_error: if (card->remove) card->remove(card); snd_card_free(card->snd_card); base_error: mutex_unlock(&card->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) { int i; /* make sure any delayed work runs */ for (i = 0; i < card->num_rtd; i++) { struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; flush_delayed_work(&rtd->delayed_work); } /* remove auxiliary devices */ for (i = 0; i < card->num_aux_devs; i++) soc_remove_aux_dev(card, i); /* remove and free each DAI */ soc_remove_dai_links(card); soc_cleanup_card_debugfs(card); /* remove the card */ if (card->remove) card->remove(card); snd_soc_dapm_free(&card->dapm); snd_card_free(card->snd_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); int i; 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 (i = 0; i < card->num_rtd; i++) { struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; flush_delayed_work(&rtd->delayed_work); } snd_soc_dapm_shutdown(card); 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", .owner = THIS_MODULE, .pm = &snd_soc_pm_ops, }, .probe = soc_probe, .remove = soc_remove, }; /** * snd_soc_codec_volatile_register: Report if a register is volatile. * * @codec: CODEC to query. * @reg: Register to query. * * Boolean function indiciating if a CODEC register is volatile. */ int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, unsigned int reg) { if (codec->volatile_register) return codec->volatile_register(codec, reg); else return 0; } EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register); /** * snd_soc_codec_readable_register: Report if a register is readable. * * @codec: CODEC to query. * @reg: Register to query. * * Boolean function indicating if a CODEC register is readable. */ int snd_soc_codec_readable_register(struct snd_soc_codec *codec, unsigned int reg) { if (codec->readable_register) return codec->readable_register(codec, reg); else return 1; } EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register); /** * snd_soc_codec_writable_register: Report if a register is writable. * * @codec: CODEC to query. * @reg: Register to query. * * Boolean function indicating if a CODEC register is writable. */ int snd_soc_codec_writable_register(struct snd_soc_codec *codec, unsigned int reg) { if (codec->writable_register) return codec->writable_register(codec, reg); else return 1; } EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register); int snd_soc_platform_read(struct snd_soc_platform *platform, unsigned int reg) { unsigned int ret; if (!platform->driver->read) { dev_err(platform->dev, "ASoC: platform has no read back\n"); return -1; } ret = platform->driver->read(platform, reg); dev_dbg(platform->dev, "read %x => %x\n", reg, ret); trace_snd_soc_preg_read(platform, reg, ret); return ret; } EXPORT_SYMBOL_GPL(snd_soc_platform_read); int snd_soc_platform_write(struct snd_soc_platform *platform, unsigned int reg, unsigned int val) { if (!platform->driver->write) { dev_err(platform->dev, "ASoC: platform has no write back\n"); return -1; } dev_dbg(platform->dev, "write %x = %x\n", reg, val); trace_snd_soc_preg_write(platform, reg, val); return platform->driver->write(platform, reg, val); } EXPORT_SYMBOL_GPL(snd_soc_platform_write); /** * snd_soc_new_ac97_codec - initailise AC97 device * @codec: audio codec * @ops: AC97 bus operations * @num: AC97 codec number * * Initialises AC97 codec resources for use by ad-hoc devices only. */ int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, struct snd_ac97_bus_ops *ops, int num) { mutex_lock(&codec->mutex); codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); if (codec->ac97 == NULL) { mutex_unlock(&codec->mutex); return -ENOMEM; } codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); if (codec->ac97->bus == NULL) { kfree(codec->ac97); codec->ac97 = NULL; mutex_unlock(&codec->mutex); return -ENOMEM; } codec->ac97->bus->ops = ops; codec->ac97->num = num; /* * Mark the AC97 device to be created by us. This way we ensure that the * device will be registered with the device subsystem later on. */ codec->ac97_created = 1; mutex_unlock(&codec->mutex); return 0; } EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); /** * snd_soc_free_ac97_codec - free AC97 codec device * @codec: audio codec * * Frees AC97 codec device resources. */ void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) { mutex_lock(&codec->mutex); #ifdef CONFIG_SND_SOC_AC97_BUS soc_unregister_ac97_dai_link(codec); #endif kfree(codec->ac97->bus); kfree(codec->ac97); codec->ac97 = NULL; codec->ac97_created = 0; mutex_unlock(&codec->mutex); } EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg) { unsigned int ret; ret = codec->read(codec, reg); dev_dbg(codec->dev, "read %x => %x\n", reg, ret); trace_snd_soc_reg_read(codec, reg, ret); return ret; } EXPORT_SYMBOL_GPL(snd_soc_read); unsigned int snd_soc_write(struct snd_soc_codec *codec, unsigned int reg, unsigned int val) { dev_dbg(codec->dev, "write %x = %x\n", reg, val); trace_snd_soc_reg_write(codec, reg, val); return codec->write(codec, reg, val); } EXPORT_SYMBOL_GPL(snd_soc_write); unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec, unsigned int reg, const void *data, size_t len) { return codec->bulk_write_raw(codec, reg, data, len); } EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw); /** * snd_soc_update_bits - update codec register bits * @codec: audio codec * @reg: codec register * @mask: register mask * @value: new value * * Writes new register value. * * Returns 1 for change, 0 for no change, or negative error code. */ int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, unsigned int mask, unsigned int value) { bool change; unsigned int old, new; int ret; if (codec->using_regmap) { ret = regmap_update_bits_check(codec->control_data, reg, mask, value, &change); } else { ret = snd_soc_read(codec, reg); if (ret < 0) return ret; old = ret; new = (old & ~mask) | (value & mask); change = old != new; if (change) ret = snd_soc_write(codec, reg, new); } if (ret < 0) return ret; return change; } EXPORT_SYMBOL_GPL(snd_soc_update_bits); /** * snd_soc_update_bits_locked - update codec register bits * @codec: audio codec * @reg: codec register * @mask: register mask * @value: new value * * Writes new register value, and takes the codec mutex. * * Returns 1 for change else 0. */ int snd_soc_update_bits_locked(struct snd_soc_codec *codec, unsigned short reg, unsigned int mask, unsigned int value) { int change; mutex_lock(&codec->mutex); change = snd_soc_update_bits(codec, reg, mask, value); mutex_unlock(&codec->mutex); return change; } EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked); /** * snd_soc_test_bits - test register for change * @codec: audio codec * @reg: codec register * @mask: register mask * @value: new value * * Tests a register with a new value and checks if the new value is * different from the old value. * * Returns 1 for change else 0. */ int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, unsigned int mask, unsigned int value) { int change; unsigned int old, new; old = snd_soc_read(codec, reg); new = (old & ~mask) | value; change = old != new; return change; } EXPORT_SYMBOL_GPL(snd_soc_test_bits); /** * snd_soc_set_runtime_hwparams - set the runtime hardware parameters * @substream: the pcm substream * @hw: the hardware parameters * * Sets the substream runtime hardware parameters. */ int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, const struct snd_pcm_hardware *hw) { struct snd_pcm_runtime *runtime = substream->runtime; runtime->hw.info = hw->info; runtime->hw.formats = hw->formats; runtime->hw.period_bytes_min = hw->period_bytes_min; runtime->hw.period_bytes_max = hw->period_bytes_max; runtime->hw.periods_min = hw->periods_min; runtime->hw.periods_max = hw->periods_max; runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; runtime->hw.fifo_size = hw->fifo_size; return 0; } EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); /** * 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; int name_len; memcpy(&template, _template, sizeof(template)); template.index = 0; if (!long_name) long_name = template.name; if (prefix) { name_len = strlen(long_name) + strlen(prefix) + 2; name = kmalloc(name_len, GFP_KERNEL); if (!name) return NULL; snprintf(name, name_len, "%s %s", prefix, long_name); 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; } /** * snd_soc_add_codec_controls - add an array of controls to a codec. * Convenience function to add a list of controls. Many codecs were * duplicating this code. * * @codec: codec 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_codec_controls(struct snd_soc_codec *codec, const struct snd_kcontrol_new *controls, int num_controls) { struct snd_card *card = codec->card->snd_card; return snd_soc_add_controls(card, codec->dev, controls, num_controls, codec->name_prefix, codec); } EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls); /** * snd_soc_add_platform_controls - add an array of controls to a platform. * Convenience function to add a list of controls. * * @platform: platform 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_platform_controls(struct snd_soc_platform *platform, const struct snd_kcontrol_new *controls, int num_controls) { struct snd_card *card = platform->card->snd_card; return snd_soc_add_controls(card, platform->dev, controls, num_controls, NULL, platform); } EXPORT_SYMBOL_GPL(snd_soc_add_platform_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->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_info_enum_double - enumerated double mixer info callback * @kcontrol: mixer control * @uinfo: control element information * * Callback to provide information about a double enumerated * mixer control. * * Returns 0 for success. */ int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; uinfo->count = e->shift_l == e->shift_r ? 1 : 2; uinfo->value.enumerated.items = e->max; if (uinfo->value.enumerated.item > e->max - 1) uinfo->value.enumerated.item = e->max - 1; strcpy(uinfo->value.enumerated.name, e->texts[uinfo->value.enumerated.item]); return 0; } EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); /** * snd_soc_get_enum_double - enumerated double mixer get callback * @kcontrol: mixer control * @ucontrol: control element information * * Callback to get the value of a double enumerated mixer. * * Returns 0 for success. */ int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned int val; val = snd_soc_read(codec, e->reg); ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & e->mask; if (e->shift_l != e->shift_r) ucontrol->value.enumerated.item[1] = (val >> e->shift_r) & e->mask; return 0; } EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); /** * snd_soc_put_enum_double - enumerated double mixer put callback * @kcontrol: mixer control * @ucontrol: control element information * * Callback to set the value of a double enumerated mixer. * * Returns 0 for success. */ int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned int val; unsigned int mask; if (ucontrol->value.enumerated.item[0] > e->max - 1) return -EINVAL; val = ucontrol->value.enumerated.item[0] << e->shift_l; mask = e->mask << e->shift_l; if (e->shift_l != e->shift_r) { if (ucontrol->value.enumerated.item[1] > e->max - 1) return -EINVAL; val |= ucontrol->value.enumerated.item[1] << e->shift_r; mask |= e->mask << e->shift_r; } return snd_soc_update_bits_locked(codec, e->reg, mask, val); } EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); /** * snd_soc_get_value_enum_double - semi enumerated double mixer get callback * @kcontrol: mixer control * @ucontrol: control element information * * Callback to get the value of a double semi enumerated mixer. * * Semi enumerated mixer: the enumerated items are referred as values. Can be * used for handling bitfield coded enumeration for example. * * Returns 0 for success. */ int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned int reg_val, val, mux; reg_val = snd_soc_read(codec, e->reg); val = (reg_val >> e->shift_l) & e->mask; for (mux = 0; mux < e->max; mux++) { if (val == e->values[mux]) break; } ucontrol->value.enumerated.item[0] = mux; if (e->shift_l != e->shift_r) { val = (reg_val >> e->shift_r) & e->mask; for (mux = 0; mux < e->max; mux++) { if (val == e->values[mux]) break; } ucontrol->value.enumerated.item[1] = mux; } return 0; } EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double); /** * snd_soc_put_value_enum_double - semi enumerated double mixer put callback * @kcontrol: mixer control * @ucontrol: control element information * * Callback to set the value of a double semi enumerated mixer. * * Semi enumerated mixer: the enumerated items are referred as values. Can be * used for handling bitfield coded enumeration for example. * * Returns 0 for success. */ int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned int val; unsigned int mask; if (ucontrol->value.enumerated.item[0] > e->max - 1) return -EINVAL; val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; mask = e->mask << e->shift_l; if (e->shift_l != e->shift_r) { if (ucontrol->value.enumerated.item[1] > e->max - 1) return -EINVAL; val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; mask |= e->mask << e->shift_r; } return snd_soc_update_bits_locked(codec, e->reg, mask, val); } EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double); /** * snd_soc_info_enum_ext - external enumerated single mixer info callback * @kcontrol: mixer control * @uinfo: control element information * * Callback to provide information about an external enumerated * single mixer. * * Returns 0 for success. */ int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; uinfo->count = 1; uinfo->value.enumerated.items = e->max; if (uinfo->value.enumerated.item > e->max - 1) uinfo->value.enumerated.item = e->max - 1; strcpy(uinfo->value.enumerated.name, e->texts[uinfo->value.enumerated.item]); return 0; } EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); /** * snd_soc_info_volsw_ext - external single mixer info callback * @kcontrol: mixer control * @uinfo: control element information * * Callback to provide information about a single external mixer control. * * Returns 0 for success. */ int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { int max = kcontrol->private_value; if (max == 1 && !strstr(kcontrol->id.name, " Volume")) uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; else uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 1; uinfo->value.integer.min = 0; uinfo->value.integer.max = max; return 0; } EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); /** * snd_soc_info_volsw - single mixer info callback * @kcontrol: mixer control * @uinfo: control element information * * Callback to provide information about a single mixer control, or a double * mixer control that spans 2 registers. * * Returns 0 for success. */ int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; int platform_max; if (!mc->platform_max) mc->platform_max = mc->max; platform_max = mc->platform_max; if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume")) uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; else uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; uinfo->value.integer.min = 0; uinfo->value.integer.max = platform_max; return 0; } EXPORT_SYMBOL_GPL(snd_soc_info_volsw); /** * snd_soc_get_volsw - single mixer get callback * @kcontrol: mixer control * @ucontrol: control element information * * Callback to get the value of a single mixer control, or a double mixer * control that spans 2 registers. * * Returns 0 for success. */ int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); unsigned int reg = mc->reg; unsigned int reg2 = mc->rreg; unsigned int shift = mc->shift; unsigned int rshift = mc->rshift; int max = mc->max; unsigned int mask = (1 << fls(max)) - 1; unsigned int invert = mc->invert; ucontrol->value.integer.value[0] = (snd_soc_read(codec, reg) >> shift) & mask; if (invert) ucontrol->value.integer.value[0] = max - ucontrol->value.integer.value[0]; if (snd_soc_volsw_is_stereo(mc)) { if (reg == reg2) ucontrol->value.integer.value[1] = (snd_soc_read(codec, reg) >> rshift) & mask; else ucontrol->value.integer.value[1] = (snd_soc_read(codec, reg2) >> shift) & mask; if (invert) ucontrol->value.integer.value[1] = max - ucontrol->value.integer.value[1]; } return 0; } EXPORT_SYMBOL_GPL(snd_soc_get_volsw); /** * snd_soc_put_volsw - single mixer put callback * @kcontrol: mixer control * @ucontrol: control element information * * Callback to set the value of a single mixer control, or a double mixer * control that spans 2 registers. * * Returns 0 for success. */ int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); unsigned int reg = mc->reg; unsigned int reg2 = mc->rreg; unsigned int shift = mc->shift; unsigned int rshift = mc->rshift; int max = mc->max; unsigned int mask = (1 << fls(max)) - 1; unsigned int invert = mc->invert; int err; bool type_2r = 0; unsigned int val2 = 0; unsigned int val, val_mask; val = (ucontrol->value.integer.value[0] & mask); if (invert) val = max - val; val_mask = mask << shift; val = val << shift; if (snd_soc_volsw_is_stereo(mc)) { val2 = (ucontrol->value.integer.value[1] & mask); if (invert) val2 = max - val2; if (reg == reg2) { val_mask |= mask << rshift; val |= val2 << rshift; } else { val2 = val2 << shift; type_2r = 1; } } err = snd_soc_update_bits_locked(codec, reg, val_mask, val); if (err < 0) return err; if (type_2r) err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2); return err; } EXPORT_SYMBOL_GPL(snd_soc_put_volsw); /** * snd_soc_get_volsw_sx - single mixer get callback * @kcontrol: mixer control * @ucontrol: control element information * * Callback to get the value of a single mixer control, or a double mixer * control that spans 2 registers. * * Returns 0 for success. */ int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; unsigned int reg = mc->reg; unsigned int reg2 = mc->rreg; unsigned int shift = mc->shift; unsigned int rshift = mc->rshift; int max = mc->max; int min = mc->min; int mask = (1 << (fls(min + max) - 1)) - 1; ucontrol->value.integer.value[0] = ((snd_soc_read(codec, reg) >> shift) - min) & mask; if (snd_soc_volsw_is_stereo(mc)) ucontrol->value.integer.value[1] = ((snd_soc_read(codec, reg2) >> rshift) - min) & mask; return 0; } EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx); /** * snd_soc_put_volsw_sx - double mixer set callback * @kcontrol: mixer control * @uinfo: control element information * * Callback to set the value of a double mixer control that spans 2 registers. * * Returns 0 for success. */ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; unsigned int reg = mc->reg; unsigned int reg2 = mc->rreg; unsigned int shift = mc->shift; unsigned int rshift = mc->rshift; int max = mc->max; int min = mc->min; int mask = (1 << (fls(min + max) - 1)) - 1; int err = 0; unsigned short val, val_mask, val2 = 0; val_mask = mask << shift; val = (ucontrol->value.integer.value[0] + min) & mask; val = val << shift; err = snd_soc_update_bits_locked(codec, reg, val_mask, val); if (err < 0) return err; if (snd_soc_volsw_is_stereo(mc)) { val_mask = mask << rshift; val2 = (ucontrol->value.integer.value[1] + min) & mask; val2 = val2 << rshift; if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2)) return err; } return 0; } EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx); /** * snd_soc_info_volsw_s8 - signed mixer info callback * @kcontrol: mixer control * @uinfo: control element information * * Callback to provide information about a signed mixer control. * * Returns 0 for success. */ int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; int platform_max; int min = mc->min; if (!mc->platform_max) mc->platform_max = mc->max; platform_max = mc->platform_max; uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 2; uinfo->value.integer.min = 0; uinfo->value.integer.max = platform_max - min; return 0; } EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); /** * snd_soc_get_volsw_s8 - signed mixer get callback * @kcontrol: mixer control * @ucontrol: control element information * * Callback to get the value of a signed mixer control. * * Returns 0 for success. */ int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); unsigned int reg = mc->reg; int min = mc->min; int val = snd_soc_read(codec, reg); ucontrol->value.integer.value[0] = ((signed char)(val & 0xff))-min; ucontrol->value.integer.value[1] = ((signed char)((val >> 8) & 0xff))-min; return 0; } EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8); /** * snd_soc_put_volsw_sgn - signed mixer put callback * @kcontrol: mixer control * @ucontrol: control element information * * Callback to set the value of a signed mixer control. * * Returns 0 for success. */ int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); unsigned int reg = mc->reg; int min = mc->min; unsigned int val; val = (ucontrol->value.integer.value[0]+min) & 0xff; val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8; return snd_soc_update_bits_locked(codec, reg, 0xffff, val); } EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8); /** * snd_soc_info_volsw_range - single mixer info callback with range. * @kcontrol: mixer control * @uinfo: control element information * * Callback to provide information, within a range, about a single * mixer control. * * returns 0 for success. */ int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; int platform_max; int min = mc->min; if (!mc->platform_max) mc->platform_max = mc->max; platform_max = mc->platform_max; uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; uinfo->value.integer.min = 0; uinfo->value.integer.max = platform_max - min; return 0; } EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range); /** * snd_soc_put_volsw_range - single mixer put value callback with range. * @kcontrol: mixer control * @ucontrol: control element information * * Callback to set the value, within a range, for a single mixer control. * * Returns 0 for success. */ int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); unsigned int reg = mc->reg; unsigned int rreg = mc->rreg; unsigned int shift = mc->shift; int min = mc->min; int max = mc->max; unsigned int mask = (1 << fls(max)) - 1; unsigned int invert = mc->invert; unsigned int val, val_mask; int ret; val = ((ucontrol->value.integer.value[0] + min) & mask); if (invert) val = max - val; val_mask = mask << shift; val = val << shift; ret = snd_soc_update_bits_locked(codec, reg, val_mask, val); if (ret != 0) return ret; if (snd_soc_volsw_is_stereo(mc)) { val = ((ucontrol->value.integer.value[1] + min) & mask); if (invert) val = max - val; val_mask = mask << shift; val = val << shift; ret = snd_soc_update_bits_locked(codec, rreg, val_mask, val); } return ret; } EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range); /** * snd_soc_get_volsw_range - single mixer get callback with range * @kcontrol: mixer control * @ucontrol: control element information * * Callback to get the value, within a range, of a single mixer control. * * Returns 0 for success. */ int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); unsigned int reg = mc->reg; unsigned int rreg = mc->rreg; unsigned int shift = mc->shift; int min = mc->min; int max = mc->max; unsigned int mask = (1 << fls(max)) - 1; unsigned int invert = mc->invert; ucontrol->value.integer.value[0] = (snd_soc_read(codec, reg) >> shift) & mask; if (invert) ucontrol->value.integer.value[0] = max - ucontrol->value.integer.value[0]; ucontrol->value.integer.value[0] = ucontrol->value.integer.value[0] - min; if (snd_soc_volsw_is_stereo(mc)) { ucontrol->value.integer.value[1] = (snd_soc_read(codec, rreg) >> shift) & mask; if (invert) ucontrol->value.integer.value[1] = max - ucontrol->value.integer.value[1]; ucontrol->value.integer.value[1] = ucontrol->value.integer.value[1] - min; } return 0; } EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range); /** * snd_soc_limit_volume - Set new limit to an existing volume control. * * @codec: where to look for the control * @name: Name of the control * @max: new maximum limit * * Return 0 for success, else error. */ int snd_soc_limit_volume(struct snd_soc_codec *codec, const char *name, int max) { struct snd_card *card = codec->card->snd_card; struct snd_kcontrol *kctl; struct soc_mixer_control *mc; int found = 0; int ret = -EINVAL; /* Sanity check for name and max */ if (unlikely(!name || max <= 0)) return -EINVAL; list_for_each_entry(kctl, &card->controls, list) { if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) { found = 1; break; } } if (found) { mc = (struct soc_mixer_control *)kctl->private_value; if (max <= mc->max) { mc->platform_max = max; ret = 0; } } return ret; } EXPORT_SYMBOL_GPL(snd_soc_limit_volume); int snd_soc_bytes_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); struct soc_bytes *params = (void *)kcontrol->private_value; uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; uinfo->count = params->num_regs * codec->val_bytes; return 0; } EXPORT_SYMBOL_GPL(snd_soc_bytes_info); int snd_soc_bytes_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct soc_bytes *params = (void *)kcontrol->private_value; struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); int ret; if (codec->using_regmap) ret = regmap_raw_read(codec->control_data, params->base, ucontrol->value.bytes.data, params->num_regs * codec->val_bytes); else ret = -EINVAL; /* Hide any masked bytes to ensure consistent data reporting */ if (ret == 0 && params->mask) { switch (codec->val_bytes) { case 1: ucontrol->value.bytes.data[0] &= ~params->mask; break; case 2: ((u16 *)(&ucontrol->value.bytes.data))[0] &= ~params->mask; break; case 4: ((u32 *)(&ucontrol->value.bytes.data))[0] &= ~params->mask; break; default: return -EINVAL; } } return ret; } EXPORT_SYMBOL_GPL(snd_soc_bytes_get); int snd_soc_bytes_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct soc_bytes *params = (void *)kcontrol->private_value; struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); int ret, len; unsigned int val; void *data; if (!codec->using_regmap) return -EINVAL; len = params->num_regs * codec->val_bytes; data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA); if (!data) return -ENOMEM; /* * If we've got a mask then we need to preserve the register * bits. We shouldn't modify the incoming data so take a * copy. */ if (params->mask) { ret = regmap_read(codec->control_data, params->base, &val); if (ret != 0) return ret; val &= params->mask; switch (codec->val_bytes) { case 1: ((u8 *)data)[0] &= ~params->mask; ((u8 *)data)[0] |= val; break; case 2: ((u16 *)data)[0] &= cpu_to_be16(~params->mask); ((u16 *)data)[0] |= cpu_to_be16(val); break; case 4: ((u32 *)data)[0] &= cpu_to_be32(~params->mask); ((u32 *)data)[0] |= cpu_to_be32(val); break; default: return -EINVAL; } } ret = regmap_raw_write(codec->control_data, params->base, data, len); kfree(data); return ret; } EXPORT_SYMBOL_GPL(snd_soc_bytes_put); /** * snd_soc_info_xr_sx - signed multi register info callback * @kcontrol: mreg control * @uinfo: control element information * * Callback to provide information of a control that can * span multiple codec registers which together * forms a single signed value in a MSB/LSB manner. * * Returns 0 for success. */ int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { struct soc_mreg_control *mc = (struct soc_mreg_control *)kcontrol->private_value; uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 1; uinfo->value.integer.min = mc->min; uinfo->value.integer.max = mc->max; return 0; } EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx); /** * snd_soc_get_xr_sx - signed multi register get callback * @kcontrol: mreg control * @ucontrol: control element information * * Callback to get the value of a control that can span * multiple codec registers which together forms a single * signed value in a MSB/LSB manner. The control supports * specifying total no of bits used to allow for bitfields * across the multiple codec registers. * * Returns 0 for success. */ int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct soc_mreg_control *mc = (struct soc_mreg_control *)kcontrol->private_value; struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); unsigned int regbase = mc->regbase; unsigned int regcount = mc->regcount; unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE; unsigned int regwmask = (1<invert; unsigned long mask = (1UL<nbits)-1; long min = mc->min; long max = mc->max; long val = 0; unsigned long regval; unsigned int i; for (i = 0; i < regcount; i++) { regval = snd_soc_read(codec, regbase+i) & regwmask; val |= regval << (regwshift*(regcount-i-1)); } val &= mask; if (min < 0 && val > max) val |= ~mask; if (invert) val = max - val; ucontrol->value.integer.value[0] = val; return 0; } EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx); /** * snd_soc_put_xr_sx - signed multi register get callback * @kcontrol: mreg control * @ucontrol: control element information * * Callback to set the value of a control that can span * multiple codec registers which together forms a single * signed value in a MSB/LSB manner. The control supports * specifying total no of bits used to allow for bitfields * across the multiple codec registers. * * Returns 0 for success. */ int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct soc_mreg_control *mc = (struct soc_mreg_control *)kcontrol->private_value; struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); unsigned int regbase = mc->regbase; unsigned int regcount = mc->regcount; unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE; unsigned int regwmask = (1<invert; unsigned long mask = (1UL<nbits)-1; long max = mc->max; long val = ucontrol->value.integer.value[0]; unsigned int i, regval, regmask; int err; if (invert) val = max - val; val &= mask; for (i = 0; i < regcount; i++) { regval = (val >> (regwshift*(regcount-i-1))) & regwmask; regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask; err = snd_soc_update_bits_locked(codec, regbase+i, regmask, regval); if (err < 0) return err; } return 0; } EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx); /** * snd_soc_get_strobe - strobe get callback * @kcontrol: mixer control * @ucontrol: control element information * * Callback get the value of a strobe mixer control. * * Returns 0 for success. */ int snd_soc_get_strobe(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); unsigned int reg = mc->reg; unsigned int shift = mc->shift; unsigned int mask = 1 << shift; unsigned int invert = mc->invert != 0; unsigned int val = snd_soc_read(codec, reg) & mask; if (shift != 0 && val != 0) val = val >> shift; ucontrol->value.enumerated.item[0] = val ^ invert; return 0; } EXPORT_SYMBOL_GPL(snd_soc_get_strobe); /** * snd_soc_put_strobe - strobe put callback * @kcontrol: mixer control * @ucontrol: control element information * * Callback strobe a register bit to high then low (or the inverse) * in one pass of a single mixer enum control. * * Returns 1 for success. */ int snd_soc_put_strobe(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); unsigned int reg = mc->reg; unsigned int shift = mc->shift; unsigned int mask = 1 << shift; unsigned int invert = mc->invert != 0; unsigned int strobe = ucontrol->value.enumerated.item[0] != 0; unsigned int val1 = (strobe ^ invert) ? mask : 0; unsigned int val2 = (strobe ^ invert) ? 0 : mask; int err; err = snd_soc_update_bits_locked(codec, reg, mask, val1); if (err < 0) return err; err = snd_soc_update_bits_locked(codec, reg, mask, val2); return err; } EXPORT_SYMBOL_GPL(snd_soc_put_strobe); /** * 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 && dai->driver->ops->set_sysclk) return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir); else if (dai->codec && dai->codec->driver->set_sysclk) return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0, freq, dir); else return -EINVAL; } EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); /** * snd_soc_codec_set_sysclk - configure CODEC system or master clock. * @codec: CODEC * @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_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id, int source, unsigned int freq, int dir) { if (codec->driver->set_sysclk) return codec->driver->set_sysclk(codec, clk_id, source, freq, dir); else return -EINVAL; } EXPORT_SYMBOL_GPL(snd_soc_codec_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 && 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 && dai->driver->ops->set_pll) return dai->driver->ops->set_pll(dai, pll_id, source, freq_in, freq_out); else if (dai->codec && dai->codec->driver->set_pll) return dai->codec->driver->set_pll(dai->codec, pll_id, source, freq_in, freq_out); else return -EINVAL; } EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); /* * snd_soc_codec_set_pll - configure codec PLL. * @codec: CODEC * @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_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source, unsigned int freq_in, unsigned int freq_out) { if (codec->driver->set_pll) return codec->driver->set_pll(codec, pll_id, source, freq_in, freq_out); else return -EINVAL; } EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll); /** * 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 == NULL) return -EINVAL; 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_dai_set_tdm_slot - configure DAI TDM. * @dai: DAI * @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. * * Configures a DAI for TDM operation. Both mask and slots are codec and DAI * specific. */ 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 && dai->driver->ops->set_tdm_slot) return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask, slots, slot_width); else return -EINVAL; } 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 && 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_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 && 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) return -ENOTSUPP; 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); /** * 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; if (!card->name || !card->dev) return -EINVAL; for (i = 0; i < card->num_links; i++) { struct snd_soc_dai_link *link = &card->dai_link[i]; /* * Codec must be specified by 1 of name or OF node, * not both or neither. */ if (!!link->codec_name == !!link->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 (!link->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; } /* * 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; } /* * 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; } } dev_set_drvdata(card->dev, card); snd_soc_initialize_card_lists(card); soc_init_card_debugfs(card); card->rtd = devm_kzalloc(card->dev, sizeof(struct snd_soc_pcm_runtime) * (card->num_links + card->num_aux_devs), GFP_KERNEL); if (card->rtd == NULL) return -ENOMEM; card->num_rtd = 0; card->rtd_aux = &card->rtd[card->num_links]; for (i = 0; i < card->num_links; i++) card->rtd[i].dai_link = &card->dai_link[i]; INIT_LIST_HEAD(&card->list); INIT_LIST_HEAD(&card->dapm_dirty); card->instantiated = 0; mutex_init(&card->mutex); mutex_init(&card->dapm_mutex); ret = snd_soc_instantiate_card(card); if (ret != 0) soc_cleanup_card_debugfs(card); return ret; } EXPORT_SYMBOL_GPL(snd_soc_register_card); /** * 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) { if (card->instantiated) soc_cleanup_card_resources(card); 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_register_dai - Register a DAI with the ASoC core * * @dai: DAI to register */ int snd_soc_register_dai(struct device *dev, struct snd_soc_dai_driver *dai_drv) { struct snd_soc_codec *codec; struct snd_soc_dai *dai; dev_dbg(dev, "ASoC: dai register %s\n", dev_name(dev)); dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL); if (dai == NULL) return -ENOMEM; /* create DAI component name */ dai->name = fmt_single_name(dev, &dai->id); if (dai->name == NULL) { kfree(dai); return -ENOMEM; } dai->dev = dev; dai->driver = dai_drv; dai->dapm.dev = dev; if (!dai->driver->ops) dai->driver->ops = &null_dai_ops; mutex_lock(&client_mutex); list_for_each_entry(codec, &codec_list, list) { if (codec->dev == dev) { dev_dbg(dev, "ASoC: Mapped DAI %s to CODEC %s\n", dai->name, codec->name); dai->codec = codec; break; } } if (!dai->codec) dai->dapm.idle_bias_off = 1; list_add(&dai->list, &dai_list); mutex_unlock(&client_mutex); dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name); return 0; } EXPORT_SYMBOL_GPL(snd_soc_register_dai); /** * snd_soc_unregister_dai - Unregister a DAI from the ASoC core * * @dai: DAI to unregister */ void snd_soc_unregister_dai(struct device *dev) { struct snd_soc_dai *dai; list_for_each_entry(dai, &dai_list, list) { if (dev == dai->dev) goto found; } return; found: mutex_lock(&client_mutex); list_del(&dai->list); mutex_unlock(&client_mutex); dev_dbg(dev, "ASoC: Unregistered DAI '%s'\n", dai->name); kfree(dai->name); kfree(dai); } EXPORT_SYMBOL_GPL(snd_soc_unregister_dai); /** * snd_soc_register_dais - Register multiple DAIs with the ASoC core * * @dai: Array of DAIs to register * @count: Number of DAIs */ int snd_soc_register_dais(struct device *dev, struct snd_soc_dai_driver *dai_drv, size_t count) { struct snd_soc_codec *codec; struct snd_soc_dai *dai; int i, ret = 0; dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count); for (i = 0; i < count; i++) { dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL); if (dai == NULL) { ret = -ENOMEM; goto err; } /* create DAI component name */ dai->name = fmt_multiple_name(dev, &dai_drv[i]); if (dai->name == NULL) { kfree(dai); ret = -EINVAL; goto err; } dai->dev = dev; dai->driver = &dai_drv[i]; if (dai->driver->id) dai->id = dai->driver->id; else dai->id = i; dai->dapm.dev = dev; if (!dai->driver->ops) dai->driver->ops = &null_dai_ops; mutex_lock(&client_mutex); list_for_each_entry(codec, &codec_list, list) { if (codec->dev == dev) { dev_dbg(dev, "ASoC: Mapped DAI %s to " "CODEC %s\n", dai->name, codec->name); dai->codec = codec; break; } } if (!dai->codec) dai->dapm.idle_bias_off = 1; list_add(&dai->list, &dai_list); mutex_unlock(&client_mutex); dev_dbg(dai->dev, "ASoC: Registered DAI '%s'\n", dai->name); } return 0; err: for (i--; i >= 0; i--) snd_soc_unregister_dai(dev); return ret; } EXPORT_SYMBOL_GPL(snd_soc_register_dais); /** * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core * * @dai: Array of DAIs to unregister * @count: Number of DAIs */ void snd_soc_unregister_dais(struct device *dev, size_t count) { int i; for (i = 0; i < count; i++) snd_soc_unregister_dai(dev); } EXPORT_SYMBOL_GPL(snd_soc_unregister_dais); /** * snd_soc_register_platform - Register a platform with the ASoC core * * @platform: platform to register */ int snd_soc_register_platform(struct device *dev, struct snd_soc_platform_driver *platform_drv) { struct snd_soc_platform *platform; dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev)); platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL); if (platform == NULL) return -ENOMEM; /* create platform component name */ platform->name = fmt_single_name(dev, &platform->id); if (platform->name == NULL) { kfree(platform); return -ENOMEM; } platform->dev = dev; platform->driver = platform_drv; platform->dapm.dev = dev; platform->dapm.platform = platform; platform->dapm.stream_event = platform_drv->stream_event; mutex_init(&platform->mutex); mutex_lock(&client_mutex); list_add(&platform->list, &platform_list); mutex_unlock(&client_mutex); dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->name); return 0; } EXPORT_SYMBOL_GPL(snd_soc_register_platform); /** * snd_soc_unregister_platform - Unregister a platform from the ASoC core * * @platform: platform to unregister */ void snd_soc_unregister_platform(struct device *dev) { struct snd_soc_platform *platform; list_for_each_entry(platform, &platform_list, list) { if (dev == platform->dev) goto found; } return; found: mutex_lock(&client_mutex); list_del(&platform->list); mutex_unlock(&client_mutex); dev_dbg(dev, "ASoC: Unregistered platform '%s'\n", platform->name); kfree(platform->name); kfree(platform); } EXPORT_SYMBOL_GPL(snd_soc_unregister_platform); static u64 codec_format_map[] = { SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE, SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE, SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE, SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE, SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE, SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE, SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE, SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE, SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE, SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE, SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE, SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE, SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE, SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE, SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE, }; /* 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 fixup_codec_formats(struct snd_soc_pcm_stream *stream) { int i; for (i = 0; i < ARRAY_SIZE(codec_format_map); i++) if (stream->formats & codec_format_map[i]) stream->formats |= codec_format_map[i]; } /** * snd_soc_register_codec - Register a codec with the ASoC core * * @codec: codec to register */ int snd_soc_register_codec(struct device *dev, const struct snd_soc_codec_driver *codec_drv, struct snd_soc_dai_driver *dai_drv, int num_dai) { size_t reg_size; struct snd_soc_codec *codec; int ret, i; dev_dbg(dev, "codec register %s\n", dev_name(dev)); codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); if (codec == NULL) return -ENOMEM; /* create CODEC component name */ codec->name = fmt_single_name(dev, &codec->id); if (codec->name == NULL) { ret = -ENOMEM; goto fail_codec; } if (codec_drv->compress_type) codec->compress_type = codec_drv->compress_type; else codec->compress_type = SND_SOC_FLAT_COMPRESSION; codec->write = codec_drv->write; codec->read = codec_drv->read; codec->volatile_register = codec_drv->volatile_register; codec->readable_register = codec_drv->readable_register; codec->writable_register = codec_drv->writable_register; codec->ignore_pmdown_time = codec_drv->ignore_pmdown_time; codec->dapm.bias_level = SND_SOC_BIAS_OFF; codec->dapm.dev = dev; codec->dapm.codec = codec; codec->dapm.seq_notifier = codec_drv->seq_notifier; codec->dapm.stream_event = codec_drv->stream_event; codec->dev = dev; codec->driver = codec_drv; codec->num_dai = num_dai; mutex_init(&codec->mutex); /* allocate CODEC register cache */ if (codec_drv->reg_cache_size && codec_drv->reg_word_size) { reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size; codec->reg_size = reg_size; /* it is necessary to make a copy of the default register cache * because in the case of using a compression type that requires * the default register cache to be marked as the * kernel might have freed the array by the time we initialize * the cache. */ if (codec_drv->reg_cache_default) { codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default, reg_size, GFP_KERNEL); if (!codec->reg_def_copy) { ret = -ENOMEM; goto fail_codec_name; } } } if (codec_drv->reg_access_size && codec_drv->reg_access_default) { if (!codec->volatile_register) codec->volatile_register = snd_soc_default_volatile_register; if (!codec->readable_register) codec->readable_register = snd_soc_default_readable_register; if (!codec->writable_register) codec->writable_register = snd_soc_default_writable_register; } for (i = 0; i < num_dai; i++) { fixup_codec_formats(&dai_drv[i].playback); fixup_codec_formats(&dai_drv[i].capture); } mutex_lock(&client_mutex); list_add(&codec->list, &codec_list); mutex_unlock(&client_mutex); /* register any DAIs */ ret = snd_soc_register_dais(dev, dai_drv, num_dai); if (ret < 0) { dev_err(codec->dev, "ASoC: Failed to regster DAIs: %d\n", ret); goto fail_codec_name; } dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name); return 0; fail_codec_name: kfree(codec->name); fail_codec: kfree(codec); return ret; } EXPORT_SYMBOL_GPL(snd_soc_register_codec); /** * snd_soc_unregister_codec - Unregister a codec from the ASoC core * * @codec: codec to unregister */ void snd_soc_unregister_codec(struct device *dev) { struct snd_soc_codec *codec; list_for_each_entry(codec, &codec_list, list) { if (dev == codec->dev) goto found; } return; found: snd_soc_unregister_dais(dev, codec->num_dai); mutex_lock(&client_mutex); list_del(&codec->list); mutex_unlock(&client_mutex); dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name); snd_soc_cache_exit(codec); kfree(codec->reg_def_copy); kfree(codec->name); kfree(codec); } EXPORT_SYMBOL_GPL(snd_soc_unregister_codec); /* 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 = card->dev->of_node; int ret; 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); 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_kzalloc(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); kfree(routes); 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); kfree(routes); return -EINVAL; } } card->num_dapm_routes = num_routes; card->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) { 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 "[prefix]format = xxx" * SND_SOC_DAIFMT_FORMAT_MASK area */ 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_get_property(np, prop, NULL)) 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); snprintf(prop, sizeof(prop), "%sframe-master", prefix); frame = !!of_get_property(np, prop, NULL); 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); static int __init snd_soc_init(void) { #ifdef CONFIG_DEBUG_FS snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL); if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) { pr_warn("ASoC: Failed to create debugfs directory\n"); snd_soc_debugfs_root = NULL; } if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL, &codec_list_fops)) pr_warn("ASoC: Failed to create CODEC list debugfs file\n"); 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("platforms", 0444, snd_soc_debugfs_root, NULL, &platform_list_fops)) pr_warn("ASoC: Failed to create platform list debugfs file\n"); #endif 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(); #ifdef CONFIG_DEBUG_FS debugfs_remove_recursive(snd_soc_debugfs_root); #endif 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");