| /* |
| * soc-core.c -- ALSA SoC Audio Layer |
| * |
| * Copyright 2005 Wolfson Microelectronics PLC. |
| * Copyright 2005 Openedhand Ltd. |
| * Copyright (C) 2010 Slimlogic Ltd. |
| * Copyright (C) 2010 Texas Instruments Inc. |
| * |
| * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
| * with code, comments and ideas from :- |
| * Richard Purdie <richard@openedhand.com> |
| * |
| * 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 <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/pm.h> |
| #include <linux/bitops.h> |
| #include <linux/debugfs.h> |
| #include <linux/platform_device.h> |
| #include <linux/pinctrl/consumer.h> |
| #include <linux/ctype.h> |
| #include <linux/slab.h> |
| #include <linux/of.h> |
| #include <sound/core.h> |
| #include <sound/jack.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include <sound/soc-dpcm.h> |
| #include <sound/soc-topology.h> |
| #include <sound/initval.h> |
| |
| #define CREATE_TRACE_POINTS |
| #include <trace/events/asoc.h> |
| |
| #define NAME_SIZE 32 |
| |
| #ifdef CONFIG_DEBUG_FS |
| struct dentry *snd_soc_debugfs_root; |
| EXPORT_SYMBOL_GPL(snd_soc_debugfs_root); |
| #endif |
| |
| static DEFINE_MUTEX(client_mutex); |
| static LIST_HEAD(platform_list); |
| static LIST_HEAD(codec_list); |
| static LIST_HEAD(component_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; |
| |
| /* +2 for ': ' and + 1 for '\n' */ |
| if (wordsize + regsize + 2 + 1 != len) |
| return -EINVAL; |
| |
| sprintf(buf, "%.*x: ", wordsize, reg); |
| buf += wordsize + 2; |
| |
| ret = snd_soc_read(codec, reg); |
| if (ret < 0) |
| memset(buf, 'X', regsize); |
| else |
| sprintf(buf, "%.*x", regsize, ret); |
| buf[regsize] = '\n'; |
| /* no NUL-termination needed */ |
| 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) { |
| /* 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 = kstrtol(buf, 10, &rtd->pmdown_time); |
| if (ret) |
| return ret; |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set); |
| |
| static struct attribute *soc_dev_attrs[] = { |
| &dev_attr_codec_reg.attr, |
| &dev_attr_pmdown_time.attr, |
| NULL |
| }; |
| |
| static umode_t soc_dev_attr_is_visible(struct kobject *kobj, |
| struct attribute *attr, int idx) |
| { |
| struct device *dev = kobj_to_dev(kobj); |
| struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
| |
| if (attr == &dev_attr_pmdown_time.attr) |
| return attr->mode; /* always visible */ |
| return rtd->codec ? attr->mode : 0; /* enabled only with codec */ |
| } |
| |
| static const struct attribute_group soc_dapm_dev_group = { |
| .attrs = soc_dapm_dev_attrs, |
| .is_visible = soc_dev_attr_is_visible, |
| }; |
| |
| static const struct attribute_group soc_dev_roup = { |
| .attrs = soc_dev_attrs, |
| .is_visible = soc_dev_attr_is_visible, |
| }; |
| |
| static const struct attribute_group *soc_dev_attr_groups[] = { |
| &soc_dapm_dev_group, |
| &soc_dev_roup, |
| NULL |
| }; |
| |
| #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; |
| int ret; |
| |
| 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++; |
| ret = kstrtoul(start, 16, &value); |
| if (ret) |
| return ret; |
| |
| /* 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_component_debugfs(struct snd_soc_component *component) |
| { |
| if (!component->card->debugfs_card_root) |
| return; |
| |
| if (component->debugfs_prefix) { |
| char *name; |
| |
| name = kasprintf(GFP_KERNEL, "%s:%s", |
| component->debugfs_prefix, component->name); |
| if (name) { |
| component->debugfs_root = debugfs_create_dir(name, |
| component->card->debugfs_card_root); |
| kfree(name); |
| } |
| } else { |
| component->debugfs_root = debugfs_create_dir(component->name, |
| component->card->debugfs_card_root); |
| } |
| |
| if (!component->debugfs_root) { |
| dev_warn(component->dev, |
| "ASoC: Failed to create component debugfs directory\n"); |
| return; |
| } |
| |
| snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component), |
| component->debugfs_root); |
| |
| if (component->init_debugfs) |
| component->init_debugfs(component); |
| } |
| |
| static void soc_cleanup_component_debugfs(struct snd_soc_component *component) |
| { |
| debugfs_remove_recursive(component->debugfs_root); |
| } |
| |
| static void soc_init_codec_debugfs(struct snd_soc_component *component) |
| { |
| struct snd_soc_codec *codec = snd_soc_component_to_codec(component); |
| |
| codec->debugfs_reg = debugfs_create_file("codec_reg", 0644, |
| codec->component.debugfs_root, |
| codec, &codec_reg_fops); |
| if (!codec->debugfs_reg) |
| dev_warn(codec->dev, |
| "ASoC: Failed to create codec register debugfs file\n"); |
| } |
| |
| 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; |
| |
| mutex_lock(&client_mutex); |
| |
| list_for_each_entry(codec, &codec_list, list) { |
| len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", |
| codec->component.name); |
| if (len >= 0) |
| ret += len; |
| if (ret > PAGE_SIZE) { |
| ret = PAGE_SIZE; |
| break; |
| } |
| } |
| |
| mutex_unlock(&client_mutex); |
| |
| 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_component *component; |
| struct snd_soc_dai *dai; |
| |
| if (!buf) |
| return -ENOMEM; |
| |
| mutex_lock(&client_mutex); |
| |
| list_for_each_entry(component, &component_list, list) { |
| list_for_each_entry(dai, &component->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; |
| } |
| } |
| } |
| |
| mutex_unlock(&client_mutex); |
| |
| 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; |
| |
| mutex_lock(&client_mutex); |
| |
| list_for_each_entry(platform, &platform_list, list) { |
| len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", |
| platform->component.name); |
| if (len >= 0) |
| ret += len; |
| if (ret > PAGE_SIZE) { |
| ret = PAGE_SIZE; |
| break; |
| } |
| } |
| |
| mutex_unlock(&client_mutex); |
| |
| 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) |
| { |
| if (!snd_soc_debugfs_root) |
| return; |
| |
| card->debugfs_card_root = debugfs_create_dir(card->name, |
| snd_soc_debugfs_root); |
| if (!card->debugfs_card_root) { |
| dev_warn(card->dev, |
| "ASoC: Failed to create card debugfs directory\n"); |
| return; |
| } |
| |
| card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644, |
| card->debugfs_card_root, |
| &card->pop_time); |
| if (!card->debugfs_pop_time) |
| dev_warn(card->dev, |
| "ASoC: Failed to create pop time debugfs file\n"); |
| } |
| |
| static void soc_cleanup_card_debugfs(struct snd_soc_card *card) |
| { |
| debugfs_remove_recursive(card->debugfs_card_root); |
| } |
| |
| |
| static void snd_soc_debugfs_init(void) |
| { |
| snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL); |
| if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) { |
| pr_warn("ASoC: Failed to create debugfs directory\n"); |
| snd_soc_debugfs_root = NULL; |
| return; |
| } |
| |
| 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"); |
| } |
| |
| static void snd_soc_debugfs_exit(void) |
| { |
| debugfs_remove_recursive(snd_soc_debugfs_root); |
| } |
| |
| #else |
| |
| #define soc_init_codec_debugfs NULL |
| |
| static inline void soc_init_component_debugfs( |
| struct snd_soc_component *component) |
| { |
| } |
| |
| static inline void soc_cleanup_component_debugfs( |
| struct snd_soc_component *component) |
| { |
| } |
| |
| static inline void soc_init_card_debugfs(struct snd_soc_card *card) |
| { |
| } |
| |
| static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card) |
| { |
| } |
| |
| static inline void snd_soc_debugfs_init(void) |
| { |
| } |
| |
| static inline void snd_soc_debugfs_exit(void) |
| { |
| } |
| |
| #endif |
| |
| struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card, |
| const char *dai_link, int stream) |
| { |
| struct snd_soc_pcm_runtime *rtd; |
| |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| if (rtd->dai_link->no_pcm && |
| !strcmp(rtd->dai_link->name, dai_link)) |
| return rtd->pcm->streams[stream].substream; |
| } |
| dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link); |
| return NULL; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream); |
| |
| static struct snd_soc_pcm_runtime *soc_new_pcm_runtime( |
| struct snd_soc_card *card, struct snd_soc_dai_link *dai_link) |
| { |
| struct snd_soc_pcm_runtime *rtd; |
| |
| rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); |
| if (!rtd) |
| return NULL; |
| |
| rtd->card = card; |
| rtd->dai_link = dai_link; |
| rtd->codec_dais = kzalloc(sizeof(struct snd_soc_dai *) * |
| dai_link->num_codecs, |
| GFP_KERNEL); |
| if (!rtd->codec_dais) { |
| kfree(rtd); |
| return NULL; |
| } |
| |
| return rtd; |
| } |
| |
| static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime *rtd) |
| { |
| if (rtd && rtd->codec_dais) |
| kfree(rtd->codec_dais); |
| kfree(rtd); |
| } |
| |
| static void soc_add_pcm_runtime(struct snd_soc_card *card, |
| struct snd_soc_pcm_runtime *rtd) |
| { |
| list_add_tail(&rtd->list, &card->rtd_list); |
| rtd->num = card->num_rtd; |
| card->num_rtd++; |
| } |
| |
| static void soc_remove_pcm_runtimes(struct snd_soc_card *card) |
| { |
| struct snd_soc_pcm_runtime *rtd, *_rtd; |
| |
| list_for_each_entry_safe(rtd, _rtd, &card->rtd_list, list) { |
| list_del(&rtd->list); |
| soc_free_pcm_runtime(rtd); |
| } |
| |
| card->num_rtd = 0; |
| } |
| |
| struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card, |
| const char *dai_link) |
| { |
| struct snd_soc_pcm_runtime *rtd; |
| |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| if (!strcmp(rtd->dai_link->name, dai_link)) |
| return rtd; |
| } |
| dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link); |
| return NULL; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime); |
| |
| static void codec2codec_close_delayed_work(struct work_struct *work) |
| { |
| /* Currently nothing to do for c2c links |
| * Since c2c links are internal nodes in the DAPM graph and |
| * don't interface with the outside world or application layer |
| * we don't have to do any special handling on close. |
| */ |
| } |
| |
| #ifdef CONFIG_PM_SLEEP |
| /* powers down audio subsystem for suspend */ |
| int snd_soc_suspend(struct device *dev) |
| { |
| struct snd_soc_card *card = dev_get_drvdata(dev); |
| struct snd_soc_component *component; |
| struct snd_soc_pcm_runtime *rtd; |
| int i; |
| |
| /* If the card is not initialized yet there is nothing to do */ |
| if (!card->instantiated) |
| return 0; |
| |
| /* Due to the resume being scheduled into a workqueue we could |
| * suspend before that's finished - wait for it to complete. |
| */ |
| snd_power_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 */ |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| |
| if (rtd->dai_link->ignore_suspend) |
| continue; |
| |
| for (i = 0; i < rtd->num_codecs; i++) { |
| struct snd_soc_dai *dai = rtd->codec_dais[i]; |
| struct snd_soc_dai_driver *drv = dai->driver; |
| |
| if (drv->ops->digital_mute && dai->playback_active) |
| drv->ops->digital_mute(dai, 1); |
| } |
| } |
| |
| /* suspend all pcms */ |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| if (rtd->dai_link->ignore_suspend) |
| continue; |
| |
| snd_pcm_suspend_all(rtd->pcm); |
| } |
| |
| if (card->suspend_pre) |
| card->suspend_pre(card); |
| |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| |
| if (rtd->dai_link->ignore_suspend) |
| continue; |
| |
| if (cpu_dai->driver->suspend && !cpu_dai->driver->bus_control) |
| cpu_dai->driver->suspend(cpu_dai); |
| } |
| |
| /* close any waiting streams */ |
| list_for_each_entry(rtd, &card->rtd_list, list) |
| flush_delayed_work(&rtd->delayed_work); |
| |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| |
| if (rtd->dai_link->ignore_suspend) |
| continue; |
| |
| snd_soc_dapm_stream_event(rtd, |
| SNDRV_PCM_STREAM_PLAYBACK, |
| SND_SOC_DAPM_STREAM_SUSPEND); |
| |
| snd_soc_dapm_stream_event(rtd, |
| SNDRV_PCM_STREAM_CAPTURE, |
| SND_SOC_DAPM_STREAM_SUSPEND); |
| } |
| |
| /* Recheck all endpoints too, their state is affected by suspend */ |
| dapm_mark_endpoints_dirty(card); |
| snd_soc_dapm_sync(&card->dapm); |
| |
| /* suspend all COMPONENTs */ |
| list_for_each_entry(component, &card->component_dev_list, card_list) { |
| struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); |
| |
| /* If there are paths active then the COMPONENT will be held with |
| * bias _ON and should not be suspended. */ |
| if (!component->suspended) { |
| switch (snd_soc_dapm_get_bias_level(dapm)) { |
| case SND_SOC_BIAS_STANDBY: |
| /* |
| * If the COMPONENT is capable of idle |
| * bias off then being in STANDBY |
| * means it's doing something, |
| * otherwise fall through. |
| */ |
| if (dapm->idle_bias_off) { |
| dev_dbg(component->dev, |
| "ASoC: idle_bias_off CODEC on over suspend\n"); |
| break; |
| } |
| |
| case SND_SOC_BIAS_OFF: |
| if (component->suspend) |
| component->suspend(component); |
| component->suspended = 1; |
| if (component->regmap) |
| regcache_mark_dirty(component->regmap); |
| /* deactivate pins to sleep state */ |
| pinctrl_pm_select_sleep_state(component->dev); |
| break; |
| default: |
| dev_dbg(component->dev, |
| "ASoC: COMPONENT is on over suspend\n"); |
| break; |
| } |
| } |
| } |
| |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| |
| if (rtd->dai_link->ignore_suspend) |
| continue; |
| |
| if (cpu_dai->driver->suspend && cpu_dai->driver->bus_control) |
| cpu_dai->driver->suspend(cpu_dai); |
| |
| /* deactivate pins to sleep state */ |
| pinctrl_pm_select_sleep_state(cpu_dai->dev); |
| } |
| |
| if (card->suspend_post) |
| card->suspend_post(card); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_suspend); |
| |
| /* deferred resume work, so resume can complete before we finished |
| * setting our codec back up, which can be very slow on I2C |
| */ |
| static void soc_resume_deferred(struct work_struct *work) |
| { |
| struct snd_soc_card *card = |
| container_of(work, struct snd_soc_card, deferred_resume_work); |
| struct snd_soc_pcm_runtime *rtd; |
| struct snd_soc_component *component; |
| int i; |
| |
| /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
| * so userspace apps are blocked from touching us |
| */ |
| |
| dev_dbg(card->dev, "ASoC: starting resume work\n"); |
| |
| /* Bring us up into D2 so that DAPM starts enabling things */ |
| snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2); |
| |
| if (card->resume_pre) |
| card->resume_pre(card); |
| |
| /* resume control bus DAIs */ |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| |
| if (rtd->dai_link->ignore_suspend) |
| continue; |
| |
| if (cpu_dai->driver->resume && cpu_dai->driver->bus_control) |
| cpu_dai->driver->resume(cpu_dai); |
| } |
| |
| list_for_each_entry(component, &card->component_dev_list, card_list) { |
| if (component->suspended) { |
| if (component->resume) |
| component->resume(component); |
| component->suspended = 0; |
| } |
| } |
| |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| |
| if (rtd->dai_link->ignore_suspend) |
| continue; |
| |
| snd_soc_dapm_stream_event(rtd, |
| SNDRV_PCM_STREAM_PLAYBACK, |
| SND_SOC_DAPM_STREAM_RESUME); |
| |
| snd_soc_dapm_stream_event(rtd, |
| SNDRV_PCM_STREAM_CAPTURE, |
| SND_SOC_DAPM_STREAM_RESUME); |
| } |
| |
| /* unmute any active DACs */ |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| |
| if (rtd->dai_link->ignore_suspend) |
| continue; |
| |
| for (i = 0; i < rtd->num_codecs; i++) { |
| struct snd_soc_dai *dai = rtd->codec_dais[i]; |
| struct snd_soc_dai_driver *drv = dai->driver; |
| |
| if (drv->ops->digital_mute && dai->playback_active) |
| drv->ops->digital_mute(dai, 0); |
| } |
| } |
| |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| |
| if (rtd->dai_link->ignore_suspend) |
| continue; |
| |
| if (cpu_dai->driver->resume && !cpu_dai->driver->bus_control) |
| cpu_dai->driver->resume(cpu_dai); |
| } |
| |
| if (card->resume_post) |
| card->resume_post(card); |
| |
| dev_dbg(card->dev, "ASoC: resume work completed\n"); |
| |
| /* Recheck all endpoints too, their state is affected by suspend */ |
| dapm_mark_endpoints_dirty(card); |
| snd_soc_dapm_sync(&card->dapm); |
| |
| /* userspace can access us now we are back as we were before */ |
| snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0); |
| } |
| |
| /* powers up audio subsystem after a suspend */ |
| int snd_soc_resume(struct device *dev) |
| { |
| struct snd_soc_card *card = dev_get_drvdata(dev); |
| bool bus_control = false; |
| struct snd_soc_pcm_runtime *rtd; |
| |
| /* If the card is not initialized yet there is nothing to do */ |
| if (!card->instantiated) |
| return 0; |
| |
| /* activate pins from sleep state */ |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| struct snd_soc_dai **codec_dais = rtd->codec_dais; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| int j; |
| |
| if (cpu_dai->active) |
| pinctrl_pm_select_default_state(cpu_dai->dev); |
| |
| for (j = 0; j < rtd->num_codecs; j++) { |
| struct snd_soc_dai *codec_dai = codec_dais[j]; |
| if (codec_dai->active) |
| pinctrl_pm_select_default_state(codec_dai->dev); |
| } |
| } |
| |
| /* |
| * DAIs that also act as the control bus master might have other drivers |
| * hanging off them so need to resume immediately. Other drivers don't |
| * have that problem and may take a substantial amount of time to resume |
| * due to I/O costs and anti-pop so handle them out of line. |
| */ |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| bus_control |= cpu_dai->driver->bus_control; |
| } |
| if (bus_control) { |
| dev_dbg(dev, "ASoC: Resuming control bus master immediately\n"); |
| soc_resume_deferred(&card->deferred_resume_work); |
| } else { |
| dev_dbg(dev, "ASoC: Scheduling resume work\n"); |
| if (!schedule_work(&card->deferred_resume_work)) |
| dev_err(dev, "ASoC: resume work item may be lost\n"); |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_resume); |
| #else |
| #define snd_soc_suspend NULL |
| #define snd_soc_resume NULL |
| #endif |
| |
| static const struct snd_soc_dai_ops null_dai_ops = { |
| }; |
| |
| static struct snd_soc_component *soc_find_component( |
| const struct device_node *of_node, const char *name) |
| { |
| struct snd_soc_component *component; |
| |
| lockdep_assert_held(&client_mutex); |
| |
| list_for_each_entry(component, &component_list, list) { |
| if (of_node) { |
| if (component->dev->of_node == of_node) |
| return component; |
| } else if (strcmp(component->name, name) == 0) { |
| return component; |
| } |
| } |
| |
| return NULL; |
| } |
| |
| /** |
| * snd_soc_find_dai - Find a registered DAI |
| * |
| * @dlc: name of the DAI and optional component info to match |
| * |
| * This function will search all regsitered components and their DAIs to |
| * find the DAI of the same name. The component's of_node and name |
| * should also match if being specified. |
| * |
| * Return: pointer of DAI, or NULL if not found. |
| */ |
| struct snd_soc_dai *snd_soc_find_dai( |
| const struct snd_soc_dai_link_component *dlc) |
| { |
| struct snd_soc_component *component; |
| struct snd_soc_dai *dai; |
| struct device_node *component_of_node; |
| |
| lockdep_assert_held(&client_mutex); |
| |
| /* Find CPU DAI from registered DAIs*/ |
| list_for_each_entry(component, &component_list, list) { |
| component_of_node = component->dev->of_node; |
| if (!component_of_node && component->dev->parent) |
| component_of_node = component->dev->parent->of_node; |
| |
| if (dlc->of_node && component_of_node != dlc->of_node) |
| continue; |
| if (dlc->name && strcmp(component->name, dlc->name)) |
| continue; |
| list_for_each_entry(dai, &component->dai_list, list) { |
| if (dlc->dai_name && strcmp(dai->name, dlc->dai_name)) |
| continue; |
| |
| return dai; |
| } |
| } |
| |
| return NULL; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_find_dai); |
| |
| |
| /** |
| * snd_soc_find_dai_link - Find a DAI link |
| * |
| * @card: soc card |
| * @id: DAI link ID to match |
| * @name: DAI link name to match, optional |
| * @stream name: DAI link stream name to match, optional |
| * |
| * This function will search all existing DAI links of the soc card to |
| * find the link of the same ID. Since DAI links may not have their |
| * unique ID, so name and stream name should also match if being |
| * specified. |
| * |
| * Return: pointer of DAI link, or NULL if not found. |
| */ |
| struct snd_soc_dai_link *snd_soc_find_dai_link(struct snd_soc_card *card, |
| int id, const char *name, |
| const char *stream_name) |
| { |
| struct snd_soc_dai_link *link, *_link; |
| |
| lockdep_assert_held(&client_mutex); |
| |
| list_for_each_entry_safe(link, _link, &card->dai_link_list, list) { |
| if (link->id != id) |
| continue; |
| |
| if (name && (!link->name || strcmp(name, link->name))) |
| continue; |
| |
| if (stream_name && (!link->stream_name |
| || strcmp(stream_name, link->stream_name))) |
| continue; |
| |
| return link; |
| } |
| |
| return NULL; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_find_dai_link); |
| |
| static bool soc_is_dai_link_bound(struct snd_soc_card *card, |
| struct snd_soc_dai_link *dai_link) |
| { |
| struct snd_soc_pcm_runtime *rtd; |
| |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| if (rtd->dai_link == dai_link) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| static int soc_bind_dai_link(struct snd_soc_card *card, |
| struct snd_soc_dai_link *dai_link) |
| { |
| struct snd_soc_pcm_runtime *rtd; |
| struct snd_soc_dai_link_component *codecs = dai_link->codecs; |
| struct snd_soc_dai_link_component cpu_dai_component; |
| struct snd_soc_dai **codec_dais; |
| struct snd_soc_platform *platform; |
| struct device_node *platform_of_node; |
| const char *platform_name; |
| int i; |
| |
| dev_dbg(card->dev, "ASoC: binding %s\n", dai_link->name); |
| |
| if (soc_is_dai_link_bound(card, dai_link)) { |
| dev_dbg(card->dev, "ASoC: dai link %s already bound\n", |
| dai_link->name); |
| return 0; |
| } |
| |
| rtd = soc_new_pcm_runtime(card, dai_link); |
| if (!rtd) |
| return -ENOMEM; |
| |
| cpu_dai_component.name = dai_link->cpu_name; |
| cpu_dai_component.of_node = dai_link->cpu_of_node; |
| cpu_dai_component.dai_name = dai_link->cpu_dai_name; |
| rtd->cpu_dai = snd_soc_find_dai(&cpu_dai_component); |
| if (!rtd->cpu_dai) { |
| dev_err(card->dev, "ASoC: CPU DAI %s not registered\n", |
| dai_link->cpu_dai_name); |
| goto _err_defer; |
| } |
| |
| rtd->num_codecs = dai_link->num_codecs; |
| |
| /* Find CODEC from registered CODECs */ |
| codec_dais = rtd->codec_dais; |
| for (i = 0; i < rtd->num_codecs; i++) { |
| codec_dais[i] = snd_soc_find_dai(&codecs[i]); |
| if (!codec_dais[i]) { |
| dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n", |
| codecs[i].dai_name); |
| goto _err_defer; |
| } |
| } |
| |
| /* Single codec links expect codec and codec_dai in runtime data */ |
| rtd->codec_dai = codec_dais[0]; |
| rtd->codec = rtd->codec_dai->codec; |
| |
| /* 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) { |
| platform_of_node = platform->dev->of_node; |
| if (!platform_of_node && platform->dev->parent->of_node) |
| platform_of_node = platform->dev->parent->of_node; |
| |
| if (dai_link->platform_of_node) { |
| if (platform_of_node != dai_link->platform_of_node) |
| continue; |
| } else { |
| if (strcmp(platform->component.name, platform_name)) |
| continue; |
| } |
| |
| rtd->platform = platform; |
| } |
| if (!rtd->platform) { |
| dev_err(card->dev, "ASoC: platform %s not registered\n", |
| dai_link->platform_name); |
| goto _err_defer; |
| } |
| |
| soc_add_pcm_runtime(card, rtd); |
| return 0; |
| |
| _err_defer: |
| soc_free_pcm_runtime(rtd); |
| return -EPROBE_DEFER; |
| } |
| |
| static void soc_remove_component(struct snd_soc_component *component) |
| { |
| if (!component->card) |
| return; |
| |
| list_del(&component->card_list); |
| |
| if (component->remove) |
| component->remove(component); |
| |
| snd_soc_dapm_free(snd_soc_component_get_dapm(component)); |
| |
| soc_cleanup_component_debugfs(component); |
| component->card = NULL; |
| module_put(component->dev->driver->owner); |
| } |
| |
| static void soc_remove_dai(struct snd_soc_dai *dai, int order) |
| { |
| int err; |
| |
| if (dai && dai->probed && |
| dai->driver->remove_order == order) { |
| if (dai->driver->remove) { |
| err = dai->driver->remove(dai); |
| if (err < 0) |
| dev_err(dai->dev, |
| "ASoC: failed to remove %s: %d\n", |
| dai->name, err); |
| } |
| dai->probed = 0; |
| } |
| } |
| |
| static void soc_remove_link_dais(struct snd_soc_card *card, |
| struct snd_soc_pcm_runtime *rtd, int order) |
| { |
| int i; |
| |
| /* unregister the rtd device */ |
| if (rtd->dev_registered) { |
| device_unregister(rtd->dev); |
| rtd->dev_registered = 0; |
| } |
| |
| /* remove the CODEC DAI */ |
| for (i = 0; i < rtd->num_codecs; i++) |
| soc_remove_dai(rtd->codec_dais[i], order); |
| |
| soc_remove_dai(rtd->cpu_dai, order); |
| } |
| |
| static void soc_remove_link_components(struct snd_soc_card *card, |
| struct snd_soc_pcm_runtime *rtd, int order) |
| { |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_component *component; |
| int i; |
| |
| /* remove the platform */ |
| if (platform && platform->component.driver->remove_order == order) |
| soc_remove_component(&platform->component); |
| |
| /* remove the CODEC-side CODEC */ |
| for (i = 0; i < rtd->num_codecs; i++) { |
| component = rtd->codec_dais[i]->component; |
| if (component->driver->remove_order == order) |
| soc_remove_component(component); |
| } |
| |
| /* remove any CPU-side CODEC */ |
| if (cpu_dai) { |
| if (cpu_dai->component->driver->remove_order == order) |
| soc_remove_component(cpu_dai->component); |
| } |
| } |
| |
| static void soc_remove_dai_links(struct snd_soc_card *card) |
| { |
| int order; |
| struct snd_soc_pcm_runtime *rtd; |
| struct snd_soc_dai_link *link, *_link; |
| |
| for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| order++) { |
| list_for_each_entry(rtd, &card->rtd_list, list) |
| soc_remove_link_dais(card, rtd, order); |
| } |
| |
| for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| order++) { |
| list_for_each_entry(rtd, &card->rtd_list, list) |
| soc_remove_link_components(card, rtd, order); |
| } |
| |
| list_for_each_entry_safe(link, _link, &card->dai_link_list, list) { |
| if (link->dobj.type == SND_SOC_DOBJ_DAI_LINK) |
| dev_warn(card->dev, "Topology forgot to remove link %s?\n", |
| link->name); |
| |
| list_del(&link->list); |
| card->num_dai_links--; |
| } |
| } |
| |
| static int snd_soc_init_multicodec(struct snd_soc_card *card, |
| struct snd_soc_dai_link *dai_link) |
| { |
| /* Legacy codec/codec_dai link is a single entry in multicodec */ |
| if (dai_link->codec_name || dai_link->codec_of_node || |
| dai_link->codec_dai_name) { |
| dai_link->num_codecs = 1; |
| |
| dai_link->codecs = devm_kzalloc(card->dev, |
| sizeof(struct snd_soc_dai_link_component), |
| GFP_KERNEL); |
| if (!dai_link->codecs) |
| return -ENOMEM; |
| |
| dai_link->codecs[0].name = dai_link->codec_name; |
| dai_link->codecs[0].of_node = dai_link->codec_of_node; |
| dai_link->codecs[0].dai_name = dai_link->codec_dai_name; |
| } |
| |
| if (!dai_link->codecs) { |
| dev_err(card->dev, "ASoC: DAI link has no CODECs\n"); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int soc_init_dai_link(struct snd_soc_card *card, |
| struct snd_soc_dai_link *link) |
| { |
| int i, ret; |
| |
| ret = snd_soc_init_multicodec(card, link); |
| if (ret) { |
| dev_err(card->dev, "ASoC: failed to init multicodec\n"); |
| return ret; |
| } |
| |
| for (i = 0; i < link->num_codecs; i++) { |
| /* |
| * Codec must be specified by 1 of name or OF node, |
| * not both or neither. |
| */ |
| if (!!link->codecs[i].name == |
| !!link->codecs[i].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->codecs[i].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; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * snd_soc_add_dai_link - Add a DAI link dynamically |
| * @card: The ASoC card to which the DAI link is added |
| * @dai_link: The new DAI link to add |
| * |
| * This function adds a DAI link to the ASoC card's link list. |
| * |
| * Note: Topology can use this API to add DAI links when probing the |
| * topology component. And machine drivers can still define static |
| * DAI links in dai_link array. |
| */ |
| int snd_soc_add_dai_link(struct snd_soc_card *card, |
| struct snd_soc_dai_link *dai_link) |
| { |
| if (dai_link->dobj.type |
| && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) { |
| dev_err(card->dev, "Invalid dai link type %d\n", |
| dai_link->dobj.type); |
| return -EINVAL; |
| } |
| |
| lockdep_assert_held(&client_mutex); |
| /* Notify the machine driver for extra initialization |
| * on the link created by topology. |
| */ |
| if (dai_link->dobj.type && card->add_dai_link) |
| card->add_dai_link(card, dai_link); |
| |
| list_add_tail(&dai_link->list, &card->dai_link_list); |
| card->num_dai_links++; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_add_dai_link); |
| |
| /** |
| * snd_soc_remove_dai_link - Remove a DAI link from the list |
| * @card: The ASoC card that owns the link |
| * @dai_link: The DAI link to remove |
| * |
| * This function removes a DAI link from the ASoC card's link list. |
| * |
| * For DAI links previously added by topology, topology should |
| * remove them by using the dobj embedded in the link. |
| */ |
| void snd_soc_remove_dai_link(struct snd_soc_card *card, |
| struct snd_soc_dai_link *dai_link) |
| { |
| struct snd_soc_dai_link *link, *_link; |
| |
| if (dai_link->dobj.type |
| && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) { |
| dev_err(card->dev, "Invalid dai link type %d\n", |
| dai_link->dobj.type); |
| return; |
| } |
| |
| lockdep_assert_held(&client_mutex); |
| /* Notify the machine driver for extra destruction |
| * on the link created by topology. |
| */ |
| if (dai_link->dobj.type && card->remove_dai_link) |
| card->remove_dai_link(card, dai_link); |
| |
| list_for_each_entry_safe(link, _link, &card->dai_link_list, list) { |
| if (link == dai_link) { |
| list_del(&link->list); |
| card->num_dai_links--; |
| return; |
| } |
| } |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_remove_dai_link); |
| |
| static void soc_set_name_prefix(struct snd_soc_card *card, |
| struct snd_soc_component *component) |
| { |
| 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->of_node && component->dev->of_node != map->of_node) |
| continue; |
| if (map->dev_name && strcmp(component->name, map->dev_name)) |
| continue; |
| component->name_prefix = map->name_prefix; |
| break; |
| } |
| } |
| |
| static int soc_probe_component(struct snd_soc_card *card, |
| struct snd_soc_component *component) |
| { |
| struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); |
| struct snd_soc_dai *dai; |
| int ret; |
| |
| if (!strcmp(component->name, "snd-soc-dummy")) |
| return 0; |
| |
| if (component->card) { |
| if (component->card != card) { |
| dev_err(component->dev, |
| "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n", |
| card->name, component->card->name); |
| return -ENODEV; |
| } |
| return 0; |
| } |
| |
| if (!try_module_get(component->dev->driver->owner)) |
| return -ENODEV; |
| |
| component->card = card; |
| dapm->card = card; |
| soc_set_name_prefix(card, component); |
| |
| soc_init_component_debugfs(component); |
| |
| if (component->dapm_widgets) { |
| ret = snd_soc_dapm_new_controls(dapm, component->dapm_widgets, |
| component->num_dapm_widgets); |
| |
| if (ret != 0) { |
| dev_err(component->dev, |
| "Failed to create new controls %d\n", ret); |
| goto err_probe; |
| } |
| } |
| |
| list_for_each_entry(dai, &component->dai_list, list) { |
| ret = snd_soc_dapm_new_dai_widgets(dapm, dai); |
| if (ret != 0) { |
| dev_err(component->dev, |
| "Failed to create DAI widgets %d\n", ret); |
| goto err_probe; |
| } |
| } |
| |
| if (component->probe) { |
| ret = component->probe(component); |
| if (ret < 0) { |
| dev_err(component->dev, |
| "ASoC: failed to probe component %d\n", ret); |
| goto err_probe; |
| } |
| |
| WARN(dapm->idle_bias_off && |
| dapm->bias_level != SND_SOC_BIAS_OFF, |
| "codec %s can not start from non-off bias with idle_bias_off==1\n", |
| component->name); |
| } |
| |
| /* machine specific init */ |
| if (component->init) { |
| ret = component->init(component); |
| if (ret < 0) { |
| dev_err(component->dev, |
| "Failed to do machine specific init %d\n", ret); |
| goto err_probe; |
| } |
| } |
| |
| if (component->controls) |
| snd_soc_add_component_controls(component, component->controls, |
| component->num_controls); |
| if (component->dapm_routes) |
| snd_soc_dapm_add_routes(dapm, component->dapm_routes, |
| component->num_dapm_routes); |
| |
| list_add(&dapm->list, &card->dapm_list); |
| list_add(&component->card_list, &card->component_dev_list); |
| |
| return 0; |
| |
| err_probe: |
| soc_cleanup_component_debugfs(component); |
| component->card = NULL; |
| module_put(component->dev->driver->owner); |
| |
| return ret; |
| } |
| |
| static void rtd_release(struct device *dev) |
| { |
| kfree(dev); |
| } |
| |
| static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd, |
| const char *name) |
| { |
| int ret = 0; |
| |
| /* register the rtd device */ |
| rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL); |
| if (!rtd->dev) |
| return -ENOMEM; |
| device_initialize(rtd->dev); |
| rtd->dev->parent = rtd->card->dev; |
| rtd->dev->release = rtd_release; |
| rtd->dev->groups = soc_dev_attr_groups; |
| dev_set_name(rtd->dev, "%s", name); |
| dev_set_drvdata(rtd->dev, rtd); |
| mutex_init(&rtd->pcm_mutex); |
| INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients); |
| INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients); |
| INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients); |
| INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients); |
| ret = device_add(rtd->dev); |
| if (ret < 0) { |
| /* calling put_device() here to free the rtd->dev */ |
| put_device(rtd->dev); |
| dev_err(rtd->card->dev, |
| "ASoC: failed to register runtime device: %d\n", ret); |
| return ret; |
| } |
| rtd->dev_registered = 1; |
| return 0; |
| } |
| |
| static int soc_probe_link_components(struct snd_soc_card *card, |
| struct snd_soc_pcm_runtime *rtd, |
| int order) |
| { |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_component *component; |
| int i, ret; |
| |
| /* probe the CPU-side component, if it is a CODEC */ |
| component = rtd->cpu_dai->component; |
| if (component->driver->probe_order == order) { |
| ret = soc_probe_component(card, component); |
| if (ret < 0) |
| return ret; |
| } |
| |
| /* probe the CODEC-side components */ |
| for (i = 0; i < rtd->num_codecs; i++) { |
| component = rtd->codec_dais[i]->component; |
| if (component->driver->probe_order == order) { |
| ret = soc_probe_component(card, component); |
| if (ret < 0) |
| return ret; |
| } |
| } |
| |
| /* probe the platform */ |
| if (platform->component.driver->probe_order == order) { |
| ret = soc_probe_component(card, &platform->component); |
| if (ret < 0) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int soc_probe_dai(struct snd_soc_dai *dai, int order) |
| { |
| int ret; |
| |
| if (!dai->probed && dai->driver->probe_order == order) { |
| if (dai->driver->probe) { |
| ret = dai->driver->probe(dai); |
| if (ret < 0) { |
| dev_err(dai->dev, |
| "ASoC: failed to probe DAI %s: %d\n", |
| dai->name, ret); |
| return ret; |
| } |
| } |
| |
| dai->probed = 1; |
| } |
| |
| return 0; |
| } |
| |
| static int soc_link_dai_widgets(struct snd_soc_card *card, |
| struct snd_soc_dai_link *dai_link, |
| struct snd_soc_pcm_runtime *rtd) |
| { |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| struct snd_soc_dapm_widget *sink, *source; |
| int ret; |
| |
| if (rtd->num_codecs > 1) |
| dev_warn(card->dev, "ASoC: Multiple codecs not supported yet\n"); |
| |
| /* link the DAI widgets */ |
| sink = codec_dai->playback_widget; |
| source = cpu_dai->capture_widget; |
| if (sink && source) { |
| ret = snd_soc_dapm_new_pcm(card, dai_link->params, |
| dai_link->num_params, |
| source, sink); |
| if (ret != 0) { |
| dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n", |
| sink->name, source->name, ret); |
| return ret; |
| } |
| } |
| |
| sink = cpu_dai->playback_widget; |
| source = codec_dai->capture_widget; |
| if (sink && source) { |
| ret = snd_soc_dapm_new_pcm(card, dai_link->params, |
| dai_link->num_params, |
| source, sink); |
| if (ret != 0) { |
| dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n", |
| sink->name, source->name, ret); |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int soc_probe_link_dais(struct snd_soc_card *card, |
| struct snd_soc_pcm_runtime *rtd, int order) |
| { |
| struct snd_soc_dai_link *dai_link = rtd->dai_link; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| int i, ret; |
| |
| dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n", |
| card->name, rtd->num, order); |
| |
| /* set default power off timeout */ |
| rtd->pmdown_time = pmdown_time; |
| |
| ret = soc_probe_dai(cpu_dai, order); |
| if (ret) |
| return ret; |
| |
| /* probe the CODEC DAI */ |
| for (i = 0; i < rtd->num_codecs; i++) { |
| ret = soc_probe_dai(rtd->codec_dais[i], order); |
| if (ret) |
| return ret; |
| } |
| |
| /* complete DAI probe during last probe */ |
| if (order != SND_SOC_COMP_ORDER_LAST) |
| return 0; |
| |
| /* do machine specific initialization */ |
| if (dai_link->init) { |
| ret = dai_link->init(rtd); |
| if (ret < 0) { |
| dev_err(card->dev, "ASoC: failed to init %s: %d\n", |
| dai_link->name, ret); |
| return ret; |
| } |
| } |
| |
| if (dai_link->dai_fmt) |
| snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt); |
| |
| ret = soc_post_component_init(rtd, dai_link->name); |
| if (ret) |
| return ret; |
| |
| #ifdef CONFIG_DEBUG_FS |
| /* add DPCM sysfs entries */ |
| if (dai_link->dynamic) |
| soc_dpcm_debugfs_add(rtd); |
| #endif |
| |
| if (cpu_dai->driver->compress_new) { |
| /*create compress_device"*/ |
| ret = cpu_dai->driver->compress_new(rtd, 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, 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 { |
| INIT_DELAYED_WORK(&rtd->delayed_work, |
| codec2codec_close_delayed_work); |
| |
| /* link the DAI widgets */ |
| ret = soc_link_dai_widgets(card, dai_link, rtd); |
| if (ret) |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int soc_bind_aux_dev(struct snd_soc_card *card, int num) |
| { |
| struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num]; |
| struct snd_soc_component *component; |
| const char *name; |
| struct device_node *codec_of_node; |
| |
| if (aux_dev->codec_of_node || aux_dev->codec_name) { |
| /* codecs, usually analog devices */ |
| name = aux_dev->codec_name; |
| codec_of_node = aux_dev->codec_of_node; |
| component = soc_find_component(codec_of_node, name); |
| if (!component) { |
| if (codec_of_node) |
| name = of_node_full_name(codec_of_node); |
| goto err_defer; |
| } |
| } else if (aux_dev->name) { |
| /* generic components */ |
| name = aux_dev->name; |
| component = soc_find_component(NULL, name); |
| if (!component) |
| goto err_defer; |
| } else { |
| dev_err(card->dev, "ASoC: Invalid auxiliary device\n"); |
| return -EINVAL; |
| } |
| |
| component->init = aux_dev->init; |
| component->auxiliary = 1; |
| |
| return 0; |
| |
| err_defer: |
| dev_err(card->dev, "ASoC: %s not registered\n", name); |
| return -EPROBE_DEFER; |
| } |
| |
| static int soc_probe_aux_devices(struct snd_soc_card *card) |
| { |
| struct snd_soc_component *comp; |
| int order; |
| int ret; |
| |
| for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| order++) { |
| list_for_each_entry(comp, &card->component_dev_list, card_list) { |
| if (!comp->auxiliary) |
| continue; |
| |
| if (comp->driver->probe_order == order) { |
| ret = soc_probe_component(card, comp); |
| if (ret < 0) { |
| dev_err(card->dev, |
| "ASoC: failed to probe aux component %s %d\n", |
| comp->name, ret); |
| return ret; |
| } |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static void soc_remove_aux_devices(struct snd_soc_card *card) |
| { |
| struct snd_soc_component *comp, *_comp; |
| int order; |
| |
| for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| order++) { |
| list_for_each_entry_safe(comp, _comp, |
| &card->component_dev_list, card_list) { |
| |
| if (!comp->auxiliary) |
| continue; |
| |
| if (comp->driver->remove_order == order) { |
| soc_remove_component(comp); |
| comp->auxiliary = 0; |
| } |
| } |
| } |
| } |
| |
| static int snd_soc_init_codec_cache(struct snd_soc_codec *codec) |
| { |
| int ret; |
| |
| if (codec->cache_init) |
| return 0; |
| |
| 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; |
| } |
| |
| /** |
| * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime |
| * @rtd: The runtime for which the DAI link format should be changed |
| * @dai_fmt: The new DAI link format |
| * |
| * This function updates the DAI link format for all DAIs connected to the DAI |
| * link for the specified runtime. |
| * |
| * Note: For setups with a static format set the dai_fmt field in the |
| * corresponding snd_dai_link struct instead of using this function. |
| * |
| * Returns 0 on success, otherwise a negative error code. |
| */ |
| int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd, |
| unsigned int dai_fmt) |
| { |
| struct snd_soc_dai **codec_dais = rtd->codec_dais; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| unsigned int i; |
| int ret; |
| |
| for (i = 0; i < rtd->num_codecs; i++) { |
| struct snd_soc_dai *codec_dai = codec_dais[i]; |
| |
| ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt); |
| if (ret != 0 && ret != -ENOTSUPP) { |
| dev_warn(codec_dai->dev, |
| "ASoC: Failed to set DAI format: %d\n", ret); |
| return ret; |
| } |
| } |
| |
| /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */ |
| if (cpu_dai->codec) { |
| unsigned int inv_dai_fmt; |
| |
| inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK; |
| switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| case SND_SOC_DAIFMT_CBM_CFM: |
| inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS; |
| break; |
| case SND_SOC_DAIFMT_CBM_CFS: |
| inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM; |
| break; |
| case SND_SOC_DAIFMT_CBS_CFM: |
| inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS; |
| break; |
| case SND_SOC_DAIFMT_CBS_CFS: |
| inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM; |
| break; |
| } |
| |
| dai_fmt = inv_dai_fmt; |
| } |
| |
| ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt); |
| if (ret != 0 && ret != -ENOTSUPP) { |
| dev_warn(cpu_dai->dev, |
| "ASoC: Failed to set DAI format: %d\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt); |
| |
| static int snd_soc_instantiate_card(struct snd_soc_card *card) |
| { |
| struct snd_soc_codec *codec; |
| struct snd_soc_pcm_runtime *rtd; |
| struct snd_soc_dai_link *dai_link; |
| int ret, i, order; |
| |
| mutex_lock(&client_mutex); |
| mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT); |
| |
| /* bind DAIs */ |
| for (i = 0; i < card->num_links; i++) { |
| ret = soc_bind_dai_link(card, &card->dai_link[i]); |
| if (ret != 0) |
| goto base_error; |
| } |
| |
| /* bind aux_devs too */ |
| for (i = 0; i < card->num_aux_devs; i++) { |
| ret = soc_bind_aux_dev(card, i); |
| if (ret != 0) |
| goto base_error; |
| } |
| |
| /* add predefined DAI links to the list */ |
| for (i = 0; i < card->num_links; i++) |
| snd_soc_add_dai_link(card, card->dai_link+i); |
| |
| /* initialize the register cache for each available codec */ |
| list_for_each_entry(codec, &codec_list, list) { |
| if (codec->cache_init) |
| continue; |
| ret = snd_soc_init_codec_cache(codec); |
| if (ret < 0) |
| goto base_error; |
| } |
| |
| /* card bind complete so register a sound card */ |
| ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, |
| card->owner, 0, &card->snd_card); |
| if (ret < 0) { |
| dev_err(card->dev, |
| "ASoC: can't create sound card for card %s: %d\n", |
| card->name, ret); |
| goto base_error; |
| } |
| |
| soc_init_card_debugfs(card); |
| |
| card->dapm.bias_level = SND_SOC_BIAS_OFF; |
| card->dapm.dev = card->dev; |
| card->dapm.card = card; |
| list_add(&card->dapm.list, &card->dapm_list); |
| |
| #ifdef CONFIG_DEBUG_FS |
| snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root); |
| #endif |
| |
| #ifdef CONFIG_PM_SLEEP |
| /* deferred resume work */ |
| INIT_WORK(&card->deferred_resume_work, soc_resume_deferred); |
| #endif |
| |
| if (card->dapm_widgets) |
| snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets, |
| card->num_dapm_widgets); |
| |
| if (card->of_dapm_widgets) |
| snd_soc_dapm_new_controls(&card->dapm, card->of_dapm_widgets, |
| card->num_of_dapm_widgets); |
| |
| /* initialise the sound card only once */ |
| if (card->probe) { |
| ret = card->probe(card); |
| if (ret < 0) |
| goto card_probe_error; |
| } |
| |
| /* probe all components used by DAI links on this card */ |
| for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| order++) { |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| ret = soc_probe_link_components(card, rtd, order); |
| if (ret < 0) { |
| dev_err(card->dev, |
| "ASoC: failed to instantiate card %d\n", |
| ret); |
| goto probe_dai_err; |
| } |
| } |
| } |
| |
| /* probe auxiliary components */ |
| ret = soc_probe_aux_devices(card); |
| if (ret < 0) |
| goto probe_dai_err; |
| |
| /* Find new DAI links added during probing components and bind them. |
| * Components with topology may bring new DAIs and DAI links. |
| */ |
| list_for_each_entry(dai_link, &card->dai_link_list, list) { |
| if (soc_is_dai_link_bound(card, dai_link)) |
| continue; |
| |
| ret = soc_init_dai_link(card, dai_link); |
| if (ret) |
| goto probe_dai_err; |
| ret = soc_bind_dai_link(card, dai_link); |
| if (ret) |
| goto probe_dai_err; |
| } |
| |
| /* probe all DAI links on this card */ |
| for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| order++) { |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| ret = soc_probe_link_dais(card, rtd, order); |
| if (ret < 0) { |
| dev_err(card->dev, |
| "ASoC: failed to instantiate card %d\n", |
| ret); |
| goto probe_dai_err; |
| } |
| } |
| } |
| |
| snd_soc_dapm_link_dai_widgets(card); |
| snd_soc_dapm_connect_dai_link_widgets(card); |
| |
| if (card->controls) |
| snd_soc_add_card_controls(card, card->controls, card->num_controls); |
| |
| if (card->dapm_routes) |
| snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes, |
| card->num_dapm_routes); |
| |
| if (card->of_dapm_routes) |
| snd_soc_dapm_add_routes(&card->dapm, card->of_dapm_routes, |
| card->num_of_dapm_routes); |
| |
| snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname), |
| "%s", card->name); |
| snprintf(card->snd_card->longname, sizeof(card->snd_card->longname), |
| "%s", card->long_name ? card->long_name : card->name); |
| snprintf(card->snd_card->driver, sizeof(card->snd_card->driver), |
| "%s", card->driver_name ? card->driver_name : card->name); |
| for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) { |
| switch (card->snd_card->driver[i]) { |
| case '_': |
| case '-': |
| case '\0': |
| break; |
| default: |
| if (!isalnum(card->snd_card->driver[i])) |
| card->snd_card->driver[i] = '_'; |
| break; |
| } |
| } |
| |
| if (card->late_probe) { |
| ret = card->late_probe(card); |
| if (ret < 0) { |
| dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n", |
| card->name, ret); |
| goto probe_aux_dev_err; |
| } |
| } |
| |
| snd_soc_dapm_new_widgets(card); |
| |
| ret = snd_card_register(card->snd_card); |
| if (ret < 0) { |
| dev_err(card->dev, "ASoC: failed to register soundcard %d\n", |
| ret); |
| goto probe_aux_dev_err; |
| } |
| |
| card->instantiated = 1; |
| snd_soc_dapm_sync(&card->dapm); |
| mutex_unlock(&card->mutex); |
| mutex_unlock(&client_mutex); |
| |
| return 0; |
| |
| probe_aux_dev_err: |
| soc_remove_aux_devices(card); |
| |
| probe_dai_err: |
| soc_remove_dai_links(card); |
| |
| card_probe_error: |
| if (card->remove) |
| card->remove(card); |
| |
| snd_soc_dapm_free(&card->dapm); |
| soc_cleanup_card_debugfs(card); |
| snd_card_free(card->snd_card); |
| |
| base_error: |
| soc_remove_pcm_runtimes(card); |
| mutex_unlock(&card->mutex); |
| mutex_unlock(&client_mutex); |
| |
| return ret; |
| } |
| |
| /* probes a new socdev */ |
| static int soc_probe(struct platform_device *pdev) |
| { |
| struct snd_soc_card *card = platform_get_drvdata(pdev); |
| |
| /* |
| * no card, so machine driver should be registering card |
| * we should not be here in that case so ret error |
| */ |
| if (!card) |
| return -EINVAL; |
| |
| dev_warn(&pdev->dev, |
| "ASoC: machine %s should use snd_soc_register_card()\n", |
| card->name); |
| |
| /* Bodge while we unpick instantiation */ |
| card->dev = &pdev->dev; |
| |
| return snd_soc_register_card(card); |
| } |
| |
| static int soc_cleanup_card_resources(struct snd_soc_card *card) |
| { |
| struct snd_soc_pcm_runtime *rtd; |
| |
| /* make sure any delayed work runs */ |
| list_for_each_entry(rtd, &card->rtd_list, list) |
| flush_delayed_work(&rtd->delayed_work); |
| |
| /* remove and free each DAI */ |
| soc_remove_dai_links(card); |
| soc_remove_pcm_runtimes(card); |
| |
| /* remove auxiliary devices */ |
| soc_remove_aux_devices(card); |
| |
| snd_soc_dapm_free(&card->dapm); |
| soc_cleanup_card_debugfs(card); |
| |
| /* remove the card */ |
| if (card->remove) |
| card->remove(card); |
| |
| 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); |
| struct snd_soc_pcm_runtime *rtd; |
| |
| if (!card->instantiated) |
| return 0; |
| |
| /* Flush out pmdown_time work - we actually do want to run it |
| * now, we're shutting down so no imminent restart. */ |
| list_for_each_entry(rtd, &card->rtd_list, list) |
| flush_delayed_work(&rtd->delayed_work); |
| |
| snd_soc_dapm_shutdown(card); |
| |
| /* deactivate pins to sleep state */ |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| int i; |
| |
| pinctrl_pm_select_sleep_state(cpu_dai->dev); |
| for (i = 0; i < rtd->num_codecs; i++) { |
| struct snd_soc_dai *codec_dai = rtd->codec_dais[i]; |
| pinctrl_pm_select_sleep_state(codec_dai->dev); |
| } |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_poweroff); |
| |
| const struct dev_pm_ops snd_soc_pm_ops = { |
| .suspend = snd_soc_suspend, |
| .resume = snd_soc_resume, |
| .freeze = snd_soc_suspend, |
| .thaw = snd_soc_resume, |
| .poweroff = snd_soc_poweroff, |
| .restore = snd_soc_resume, |
| }; |
| EXPORT_SYMBOL_GPL(snd_soc_pm_ops); |
| |
| /* ASoC platform driver */ |
| static struct platform_driver soc_driver = { |
| .driver = { |
| .name = "soc-audio", |
| .pm = &snd_soc_pm_ops, |
| }, |
| .probe = soc_probe, |
| .remove = soc_remove, |
| }; |
| |
| /** |
| * snd_soc_cnew - create new control |
| * @_template: control template |
| * @data: control private data |
| * @long_name: control long name |
| * @prefix: control name prefix |
| * |
| * Create a new mixer control from a template control. |
| * |
| * Returns 0 for success, else error. |
| */ |
| struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, |
| void *data, const char *long_name, |
| const char *prefix) |
| { |
| struct snd_kcontrol_new template; |
| struct snd_kcontrol *kcontrol; |
| char *name = NULL; |
| |
| memcpy(&template, _template, sizeof(template)); |
| template.index = 0; |
| |
| if (!long_name) |
| long_name = template.name; |
| |
| if (prefix) { |
| name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name); |
| if (!name) |
| return NULL; |
| |
| template.name = name; |
| } else { |
| template.name = long_name; |
| } |
| |
| kcontrol = snd_ctl_new1(&template, data); |
| |
| kfree(name); |
| |
| return kcontrol; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_cnew); |
| |
| static int snd_soc_add_controls(struct snd_card *card, struct device *dev, |
| const struct snd_kcontrol_new *controls, int num_controls, |
| const char *prefix, void *data) |
| { |
| int err, i; |
| |
| for (i = 0; i < num_controls; i++) { |
| const struct snd_kcontrol_new *control = &controls[i]; |
| err = snd_ctl_add(card, snd_soc_cnew(control, data, |
| control->name, prefix)); |
| if (err < 0) { |
| dev_err(dev, "ASoC: Failed to add %s: %d\n", |
| control->name, err); |
| return err; |
| } |
| } |
| |
| return 0; |
| } |
| |
| struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card, |
| const char *name) |
| { |
| struct snd_card *card = soc_card->snd_card; |
| struct snd_kcontrol *kctl; |
| |
| if (unlikely(!name)) |
| return NULL; |
| |
| list_for_each_entry(kctl, &card->controls, list) |
| if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) |
| return kctl; |
| return NULL; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol); |
| |
| /** |
| * snd_soc_add_component_controls - Add an array of controls to a component. |
| * |
| * @component: Component to add controls to |
| * @controls: Array of controls to add |
| * @num_controls: Number of elements in the array |
| * |
| * Return: 0 for success, else error. |
| */ |
| int snd_soc_add_component_controls(struct snd_soc_component *component, |
| const struct snd_kcontrol_new *controls, unsigned int num_controls) |
| { |
| struct snd_card *card = component->card->snd_card; |
| |
| return snd_soc_add_controls(card, component->dev, controls, |
| num_controls, component->name_prefix, component); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_add_component_controls); |
| |
| /** |
| * snd_soc_add_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, unsigned int num_controls) |
| { |
| return snd_soc_add_component_controls(&codec->component, controls, |
| num_controls); |
| } |
| 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, unsigned int num_controls) |
| { |
| return snd_soc_add_component_controls(&platform->component, controls, |
| num_controls); |
| } |
| 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->component->card->snd_card; |
| |
| return snd_soc_add_controls(card, dai->dev, controls, num_controls, |
| NULL, dai); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls); |
| |
| /** |
| * snd_soc_dai_set_sysclk - configure DAI system or master clock. |
| * @dai: DAI |
| * @clk_id: DAI specific clock ID |
| * @freq: new clock frequency in Hz |
| * @dir: new clock direction - input/output. |
| * |
| * Configures the DAI master (MCLK) or system (SYSCLK) clocking. |
| */ |
| int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, |
| unsigned int freq, int dir) |
| { |
| if (dai->driver && 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 -ENOTSUPP; |
| } |
| 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 -ENOTSUPP; |
| } |
| 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_bclk_ratio - configure BCLK to sample rate ratio. |
| * @dai: DAI |
| * @ratio: Ratio of BCLK to Sample rate. |
| * |
| * Configures the DAI for a preset BCLK to sample rate ratio. |
| */ |
| int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio) |
| { |
| if (dai->driver && dai->driver->ops->set_bclk_ratio) |
| return dai->driver->ops->set_bclk_ratio(dai, ratio); |
| else |
| return -EINVAL; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio); |
| |
| /** |
| * snd_soc_dai_set_fmt - configure DAI hardware audio format. |
| * @dai: DAI |
| * @fmt: SND_SOC_DAIFMT_ format value. |
| * |
| * Configures the DAI hardware format and clocking. |
| */ |
| int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
| { |
| if (dai->driver == 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_xlate_tdm_slot - generate tx/rx slot mask. |
| * @slots: Number of slots in use. |
| * @tx_mask: bitmask representing active TX slots. |
| * @rx_mask: bitmask representing active RX slots. |
| * |
| * Generates the TDM tx and rx slot default masks for DAI. |
| */ |
| static int snd_soc_xlate_tdm_slot_mask(unsigned int slots, |
| unsigned int *tx_mask, |
| unsigned int *rx_mask) |
| { |
| if (*tx_mask || *rx_mask) |
| return 0; |
| |
| if (!slots) |
| return -EINVAL; |
| |
| *tx_mask = (1 << slots) - 1; |
| *rx_mask = (1 << slots) - 1; |
| |
| return 0; |
| } |
| |
| /** |
| * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation |
| * @dai: The DAI to configure |
| * @tx_mask: bitmask representing active TX slots. |
| * @rx_mask: bitmask representing active RX slots. |
| * @slots: Number of slots in use. |
| * @slot_width: Width in bits for each slot. |
| * |
| * This function configures the specified DAI for TDM operation. @slot contains |
| * the total number of slots of the TDM stream and @slot_with the width of each |
| * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the |
| * active slots of the TDM stream for the specified DAI, i.e. which slots the |
| * DAI should write to or read from. If a bit is set the corresponding slot is |
| * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to |
| * the first slot, bit 1 to the second slot and so on. The first active slot |
| * maps to the first channel of the DAI, the second active slot to the second |
| * channel and so on. |
| * |
| * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask, |
| * @rx_mask and @slot_width will be ignored. |
| * |
| * Returns 0 on success, a negative error code otherwise. |
| */ |
| int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, |
| unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) |
| { |
| if (dai->driver && dai->driver->ops->xlate_tdm_slot_mask) |
| dai->driver->ops->xlate_tdm_slot_mask(slots, |
| &tx_mask, &rx_mask); |
| else |
| snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask); |
| |
| dai->tx_mask = tx_mask; |
| dai->rx_mask = rx_mask; |
| |
| if (dai->driver && dai->driver->ops->set_tdm_slot) |
| return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask, |
| slots, slot_width); |
| else |
| return -ENOTSUPP; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); |
| |
| /** |
| * snd_soc_dai_set_channel_map - configure DAI audio channel map |
| * @dai: DAI |
| * @tx_num: how many TX channels |
| * @tx_slot: pointer to an array which imply the TX slot number channel |
| * 0~num-1 uses |
| * @rx_num: how many RX channels |
| * @rx_slot: pointer to an array which imply the RX slot number channel |
| * 0~num-1 uses |
| * |
| * configure the relationship between channel number and TDM slot number. |
| */ |
| int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai, |
| unsigned int tx_num, unsigned int *tx_slot, |
| unsigned int rx_num, unsigned int *rx_slot) |
| { |
| if (dai->driver && 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; |
| struct snd_soc_pcm_runtime *rtd; |
| |
| 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]; |
| |
| ret = soc_init_dai_link(card, link); |
| if (ret) { |
| dev_err(card->dev, "ASoC: failed to init link %s\n", |
| link->name); |
| return ret; |
| } |
| } |
| |
| dev_set_drvdata(card->dev, card); |
| |
| snd_soc_initialize_card_lists(card); |
| |
| INIT_LIST_HEAD(&card->dai_link_list); |
| card->num_dai_links = 0; |
| |
| INIT_LIST_HEAD(&card->rtd_list); |
| card->num_rtd = 0; |
| |
| INIT_LIST_HEAD(&card->dapm_dirty); |
| INIT_LIST_HEAD(&card->dobj_list); |
| card->instantiated = 0; |
| mutex_init(&card->mutex); |
| mutex_init(&card->dapm_mutex); |
| |
| ret = snd_soc_instantiate_card(card); |
| if (ret != 0) |
| return ret; |
| |
| /* deactivate pins to sleep state */ |
| list_for_each_entry(rtd, &card->rtd_list, list) { |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| int j; |
| |
| for (j = 0; j < rtd->num_codecs; j++) { |
| struct snd_soc_dai *codec_dai = rtd->codec_dais[j]; |
| if (!codec_dai->active) |
| pinctrl_pm_select_sleep_state(codec_dai->dev); |
| } |
| |
| if (!cpu_dai->active) |
| pinctrl_pm_select_sleep_state(cpu_dai->dev); |
| } |
| |
| return ret; |
| } |
| 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) { |
| card->instantiated = false; |
| snd_soc_dapm_shutdown(card); |
| 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_unregister_dai - Unregister DAIs from the ASoC core |
| * |
| * @component: The component for which the DAIs should be unregistered |
| */ |
| static void snd_soc_unregister_dais(struct snd_soc_component *component) |
| { |
| struct snd_soc_dai *dai, *_dai; |
| |
| list_for_each_entry_safe(dai, _dai, &component->dai_list, list) { |
| dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n", |
| dai->name); |
| list_del(&dai->list); |
| kfree(dai->name); |
| kfree(dai); |
| } |
| } |
| |
| /* Create a DAI and add it to the component's DAI list */ |
| static struct snd_soc_dai *soc_add_dai(struct snd_soc_component *component, |
| struct snd_soc_dai_driver *dai_drv, |
| bool legacy_dai_naming) |
| { |
| struct device *dev = component->dev; |
| struct snd_soc_dai *dai; |
| |
| dev_dbg(dev, "ASoC: dynamically register DAI %s\n", dev_name(dev)); |
| |
| dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL); |
| if (dai == NULL) |
| return NULL; |
| |
| /* |
| * Back in the old days when we still had component-less DAIs, |
| * instead of having a static name, component-less DAIs would |
| * inherit the name of the parent device so it is possible to |
| * register multiple instances of the DAI. We still need to keep |
| * the same naming style even though those DAIs are not |
| * component-less anymore. |
| */ |
| if (legacy_dai_naming && |
| (dai_drv->id == 0 || dai_drv->name == NULL)) { |
| dai->name = fmt_single_name(dev, &dai->id); |
| } else { |
| dai->name = fmt_multiple_name(dev, dai_drv); |
| if (dai_drv->id) |
| dai->id = dai_drv->id; |
| else |
| dai->id = component->num_dai; |
| } |
| if (dai->name == NULL) { |
| kfree(dai); |
| return NULL; |
| } |
| |
| dai->component = component; |
| dai->dev = dev; |
| dai->driver = dai_drv; |
| if (!dai->driver->ops) |
| dai->driver->ops = &null_dai_ops; |
| |
| list_add(&dai->list, &component->dai_list); |
| component->num_dai++; |
| |
| dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name); |
| return dai; |
| } |
| |
| /** |
| * snd_soc_register_dais - Register a DAI with the ASoC core |
| * |
| * @component: The component the DAIs are registered for |
| * @dai_drv: DAI driver to use for the DAIs |
| * @count: Number of DAIs |
| * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the |
| * parent's name. |
| */ |
| static int snd_soc_register_dais(struct snd_soc_component *component, |
| struct snd_soc_dai_driver *dai_drv, size_t count, |
| bool legacy_dai_naming) |
| { |
| struct device *dev = component->dev; |
| struct snd_soc_dai *dai; |
| unsigned int i; |
| int ret; |
| |
| dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count); |
| |
| component->dai_drv = dai_drv; |
| |
| for (i = 0; i < count; i++) { |
| |
| dai = soc_add_dai(component, dai_drv + i, |
| count == 1 && legacy_dai_naming); |
| if (dai == NULL) { |
| ret = -ENOMEM; |
| goto err; |
| } |
| } |
| |
| return 0; |
| |
| err: |
| snd_soc_unregister_dais(component); |
| |
| return ret; |
| } |
| |
| /** |
| * snd_soc_register_dai - Register a DAI dynamically & create its widgets |
| * |
| * @component: The component the DAIs are registered for |
| * @dai_drv: DAI driver to use for the DAI |
| * |
| * Topology can use this API to register DAIs when probing a component. |
| * These DAIs's widgets will be freed in the card cleanup and the DAIs |
| * will be freed in the component cleanup. |
| */ |
| int snd_soc_register_dai(struct snd_soc_component *component, |
| struct snd_soc_dai_driver *dai_drv) |
| { |
| struct snd_soc_dapm_context *dapm = |
| snd_soc_component_get_dapm(component); |
| struct snd_soc_dai *dai; |
| int ret; |
| |
| if (dai_drv->dobj.type != SND_SOC_DOBJ_PCM) { |
| dev_err(component->dev, "Invalid dai type %d\n", |
| dai_drv->dobj.type); |
| return -EINVAL; |
| } |
| |
| lockdep_assert_held(&client_mutex); |
| dai = soc_add_dai(component, dai_drv, false); |
| if (!dai) |
| return -ENOMEM; |
| |
| /* Create the DAI widgets here. After adding DAIs, topology may |
| * also add routes that need these widgets as source or sink. |
| */ |
| ret = snd_soc_dapm_new_dai_widgets(dapm, dai); |
| if (ret != 0) { |
| dev_err(component->dev, |
| "Failed to create DAI widgets %d\n", ret); |
| } |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_register_dai); |
| |
| static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context *dapm, |
| enum snd_soc_dapm_type type, int subseq) |
| { |
| struct snd_soc_component *component = dapm->component; |
| |
| component->driver->seq_notifier(component, type, subseq); |
| } |
| |
| static int snd_soc_component_stream_event(struct snd_soc_dapm_context *dapm, |
| int event) |
| { |
| struct snd_soc_component *component = dapm->component; |
| |
| return component->driver->stream_event(component, event); |
| } |
| |
| static int snd_soc_component_initialize(struct snd_soc_component *component, |
| const struct snd_soc_component_driver *driver, struct device *dev) |
| { |
| struct snd_soc_dapm_context *dapm; |
| |
| component->name = fmt_single_name(dev, &component->id); |
| if (!component->name) { |
| dev_err(dev, "ASoC: Failed to allocate name\n"); |
| return -ENOMEM; |
| } |
| |
| component->dev = dev; |
| component->driver = driver; |
| component->probe = component->driver->probe; |
| component->remove = component->driver->remove; |
| component->suspend = component->driver->suspend; |
| component->resume = component->driver->resume; |
| |
| dapm = &component->dapm; |
| dapm->dev = dev; |
| dapm->component = component; |
| dapm->bias_level = SND_SOC_BIAS_OFF; |
| dapm->idle_bias_off = true; |
| if (driver->seq_notifier) |
| dapm->seq_notifier = snd_soc_component_seq_notifier; |
| if (driver->stream_event) |
| dapm->stream_event = snd_soc_component_stream_event; |
| |
| component->controls = driver->controls; |
| component->num_controls = driver->num_controls; |
| component->dapm_widgets = driver->dapm_widgets; |
| component->num_dapm_widgets = driver->num_dapm_widgets; |
| component->dapm_routes = driver->dapm_routes; |
| component->num_dapm_routes = driver->num_dapm_routes; |
| |
| INIT_LIST_HEAD(&component->dai_list); |
| mutex_init(&component->io_mutex); |
| |
| return 0; |
| } |
| |
| static void snd_soc_component_setup_regmap(struct snd_soc_component *component) |
| { |
| int val_bytes = regmap_get_val_bytes(component->regmap); |
| |
| /* Errors are legitimate for non-integer byte multiples */ |
| if (val_bytes > 0) |
| component->val_bytes = val_bytes; |
| } |
| |
| #ifdef CONFIG_REGMAP |
| |
| /** |
| * snd_soc_component_init_regmap() - Initialize regmap instance for the component |
| * @component: The component for which to initialize the regmap instance |
| * @regmap: The regmap instance that should be used by the component |
| * |
| * This function allows deferred assignment of the regmap instance that is |
| * associated with the component. Only use this if the regmap instance is not |
| * yet ready when the component is registered. The function must also be called |
| * before the first IO attempt of the component. |
| */ |
| void snd_soc_component_init_regmap(struct snd_soc_component *component, |
| struct regmap *regmap) |
| { |
| component->regmap = regmap; |
| snd_soc_component_setup_regmap(component); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap); |
| |
| /** |
| * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component |
| * @component: The component for which to de-initialize the regmap instance |
| * |
| * Calls regmap_exit() on the regmap instance associated to the component and |
| * removes the regmap instance from the component. |
| * |
| * This function should only be used if snd_soc_component_init_regmap() was used |
| * to initialize the regmap instance. |
| */ |
| void snd_soc_component_exit_regmap(struct snd_soc_component *component) |
| { |
| regmap_exit(component->regmap); |
| component->regmap = NULL; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap); |
| |
| #endif |
| |
| static void snd_soc_component_add_unlocked(struct snd_soc_component *component) |
| { |
| if (!component->write && !component->read) { |
| if (!component->regmap) |
| component->regmap = dev_get_regmap(component->dev, NULL); |
| if (component->regmap) |
| snd_soc_component_setup_regmap(component); |
| } |
| |
| list_add(&component->list, &component_list); |
| INIT_LIST_HEAD(&component->dobj_list); |
| } |
| |
| static void snd_soc_component_add(struct snd_soc_component *component) |
| { |
| mutex_lock(&client_mutex); |
| snd_soc_component_add_unlocked(component); |
| mutex_unlock(&client_mutex); |
| } |
| |
| static void snd_soc_component_cleanup(struct snd_soc_component *component) |
| { |
| snd_soc_unregister_dais(component); |
| kfree(component->name); |
| } |
| |
| static void snd_soc_component_del_unlocked(struct snd_soc_component *component) |
| { |
| struct snd_soc_card *card = component->card; |
| |
| if (card) |
| snd_soc_unregister_card(card); |
| |
| list_del(&component->list); |
| } |
| |
| int snd_soc_register_component(struct device *dev, |
| const struct snd_soc_component_driver *cmpnt_drv, |
| struct snd_soc_dai_driver *dai_drv, |
| int num_dai) |
| { |
| struct snd_soc_component *cmpnt; |
| int ret; |
| |
| cmpnt = kzalloc(sizeof(*cmpnt), GFP_KERNEL); |
| if (!cmpnt) { |
| dev_err(dev, "ASoC: Failed to allocate memory\n"); |
| return -ENOMEM; |
| } |
| |
| ret = snd_soc_component_initialize(cmpnt, cmpnt_drv, dev); |
| if (ret) |
| goto err_free; |
| |
| cmpnt->ignore_pmdown_time = true; |
| cmpnt->registered_as_component = true; |
| |
| ret = snd_soc_register_dais(cmpnt, dai_drv, num_dai, true); |
| if (ret < 0) { |
| dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret); |
| goto err_cleanup; |
| } |
| |
| snd_soc_component_add(cmpnt); |
| |
| return 0; |
| |
| err_cleanup: |
| snd_soc_component_cleanup(cmpnt); |
| err_free: |
| kfree(cmpnt); |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_register_component); |
| |
| /** |
| * snd_soc_unregister_component - Unregister a component from the ASoC core |
| * |
| * @dev: The device to unregister |
| */ |
| void snd_soc_unregister_component(struct device *dev) |
| { |
| struct snd_soc_component *cmpnt; |
| |
| mutex_lock(&client_mutex); |
| list_for_each_entry(cmpnt, &component_list, list) { |
| if (dev == cmpnt->dev && cmpnt->registered_as_component) |
| goto found; |
| } |
| mutex_unlock(&client_mutex); |
| return; |
| |
| found: |
| snd_soc_tplg_component_remove(cmpnt, SND_SOC_TPLG_INDEX_ALL); |
| snd_soc_component_del_unlocked(cmpnt); |
| mutex_unlock(&client_mutex); |
| snd_soc_component_cleanup(cmpnt); |
| kfree(cmpnt); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_unregister_component); |
| |
| static int snd_soc_platform_drv_probe(struct snd_soc_component *component) |
| { |
| struct snd_soc_platform *platform = snd_soc_component_to_platform(component); |
| |
| return platform->driver->probe(platform); |
| } |
| |
| static void snd_soc_platform_drv_remove(struct snd_soc_component *component) |
| { |
| struct snd_soc_platform *platform = snd_soc_component_to_platform(component); |
| |
| platform->driver->remove(platform); |
| } |
| |
| /** |
| * snd_soc_add_platform - Add a platform to the ASoC core |
| * @dev: The parent device for the platform |
| * @platform: The platform to add |
| * @platform_drv: The driver for the platform |
| */ |
| int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform, |
| const struct snd_soc_platform_driver *platform_drv) |
| { |
| int ret; |
| |
| ret = snd_soc_component_initialize(&platform->component, |
| &platform_drv->component_driver, dev); |
| if (ret) |
| return ret; |
| |
| platform->dev = dev; |
| platform->driver = platform_drv; |
| |
| if (platform_drv->probe) |
| platform->component.probe = snd_soc_platform_drv_probe; |
| if (platform_drv->remove) |
| platform->component.remove = snd_soc_platform_drv_remove; |
| |
| #ifdef CONFIG_DEBUG_FS |
| platform->component.debugfs_prefix = "platform"; |
| #endif |
| |
| mutex_lock(&client_mutex); |
| snd_soc_component_add_unlocked(&platform->component); |
| list_add(&platform->list, &platform_list); |
| mutex_unlock(&client_mutex); |
| |
| dev_dbg(dev, "ASoC: Registered platform '%s'\n", |
| platform->component.name); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_add_platform); |
| |
| /** |
| * snd_soc_register_platform - Register a platform with the ASoC core |
| * |
| * @dev: The device for the platform |
| * @platform_drv: The driver for the platform |
| */ |
| int snd_soc_register_platform(struct device *dev, |
| const struct snd_soc_platform_driver *platform_drv) |
| { |
| struct snd_soc_platform *platform; |
| int ret; |
| |
| 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; |
| |
| ret = snd_soc_add_platform(dev, platform, platform_drv); |
| if (ret) |
| kfree(platform); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_register_platform); |
| |
| /** |
| * snd_soc_remove_platform - Remove a platform from the ASoC core |
| * @platform: the platform to remove |
| */ |
| void snd_soc_remove_platform(struct snd_soc_platform *platform) |
| { |
| |
| mutex_lock(&client_mutex); |
| list_del(&platform->list); |
| snd_soc_component_del_unlocked(&platform->component); |
| mutex_unlock(&client_mutex); |
| |
| dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n", |
| platform->component.name); |
| |
| snd_soc_component_cleanup(&platform->component); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_remove_platform); |
| |
| struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev) |
| { |
| struct snd_soc_platform *platform; |
| |
| mutex_lock(&client_mutex); |
| list_for_each_entry(platform, &platform_list, list) { |
| if (dev == platform->dev) { |
| mutex_unlock(&client_mutex); |
| return platform; |
| } |
| } |
| mutex_unlock(&client_mutex); |
| |
| return NULL; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_lookup_platform); |
| |
| /** |
| * snd_soc_unregister_platform - Unregister a platform from the ASoC core |
| * |
| * @dev: platform to unregister |
| */ |
| void snd_soc_unregister_platform(struct device *dev) |
| { |
| struct snd_soc_platform *platform; |
| |
| platform = snd_soc_lookup_platform(dev); |
| if (!platform) |
| return; |
| |
| snd_soc_remove_platform(platform); |
| 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]; |
| } |
| |
| static int snd_soc_codec_drv_probe(struct snd_soc_component *component) |
| { |
| struct snd_soc_codec *codec = snd_soc_component_to_codec(component); |
| |
| return codec->driver->probe(codec); |
| } |
| |
| static void snd_soc_codec_drv_remove(struct snd_soc_component *component) |
| { |
| struct snd_soc_codec *codec = snd_soc_component_to_codec(component); |
| |
| codec->driver->remove(codec); |
| } |
| |
| static int snd_soc_codec_drv_suspend(struct snd_soc_component *component) |
| { |
| struct snd_soc_codec *codec = snd_soc_component_to_codec(component); |
| |
| return codec->driver->suspend(codec); |
| } |
| |
| static int snd_soc_codec_drv_resume(struct snd_soc_component *component) |
| { |
| struct snd_soc_codec *codec = snd_soc_component_to_codec(component); |
| |
| return codec->driver->resume(codec); |
| } |
| |
| static int snd_soc_codec_drv_write(struct snd_soc_component *component, |
| unsigned int reg, unsigned int val) |
| { |
| struct snd_soc_codec *codec = snd_soc_component_to_codec(component); |
| |
| return codec->driver->write(codec, reg, val); |
| } |
| |
| static int snd_soc_codec_drv_read(struct snd_soc_component *component, |
| unsigned int reg, unsigned int *val) |
| { |
| struct snd_soc_codec *codec = snd_soc_component_to_codec(component); |
| |
| *val = codec->driver->read(codec, reg); |
| |
| return 0; |
| } |
| |
| static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context *dapm, |
| enum snd_soc_bias_level level) |
| { |
| struct snd_soc_codec *codec = snd_soc_dapm_to_codec(dapm); |
| |
| return codec->driver->set_bias_level(codec, level); |
| } |
| |
| /** |
| * snd_soc_register_codec - Register a codec with the ASoC core |
| * |
| * @dev: The parent device for this codec |
| * @codec_drv: Codec driver |
| * @dai_drv: The associated DAI driver |
| * @num_dai: Number of DAIs |
| */ |
| 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) |
| { |
| struct snd_soc_dapm_context *dapm; |
| struct snd_soc_codec *codec; |
| struct snd_soc_dai *dai; |
| 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; |
| |
| codec->component.codec = codec; |
| |
| ret = snd_soc_component_initialize(&codec->component, |
| &codec_drv->component_driver, dev); |
| if (ret) |
| goto err_free; |
| |
| if (codec_drv->probe) |
| codec->component.probe = snd_soc_codec_drv_probe; |
| if (codec_drv->remove) |
| codec->component.remove = snd_soc_codec_drv_remove; |
| if (codec_drv->suspend) |
| codec->component.suspend = snd_soc_codec_drv_suspend; |
| if (codec_drv->resume) |
| codec->component.resume = snd_soc_codec_drv_resume; |
| if (codec_drv->write) |
| codec->component.write = snd_soc_codec_drv_write; |
| if (codec_drv->read) |
| codec->component.read = snd_soc_codec_drv_read; |
| codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time; |
| |
| dapm = snd_soc_codec_get_dapm(codec); |
| dapm->idle_bias_off = codec_drv->idle_bias_off; |
| dapm->suspend_bias_off = codec_drv->suspend_bias_off; |
| if (codec_drv->seq_notifier) |
| dapm->seq_notifier = codec_drv->seq_notifier; |
| if (codec_drv->set_bias_level) |
| dapm->set_bias_level = snd_soc_codec_set_bias_level; |
| codec->dev = dev; |
| codec->driver = codec_drv; |
| codec->component.val_bytes = codec_drv->reg_word_size; |
| |
| #ifdef CONFIG_DEBUG_FS |
| codec->component.init_debugfs = soc_init_codec_debugfs; |
| codec->component.debugfs_prefix = "codec"; |
| #endif |
| |
| if (codec_drv->get_regmap) |
| codec->component.regmap = codec_drv->get_regmap(dev); |
| |
| for (i = 0; i < num_dai; i++) { |
| fixup_codec_formats(&dai_drv[i].playback); |
| fixup_codec_formats(&dai_drv[i].capture); |
| } |
| |
| ret = snd_soc_register_dais(&codec->component, dai_drv, num_dai, false); |
| if (ret < 0) { |
| dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret); |
| goto err_cleanup; |
| } |
| |
| list_for_each_entry(dai, &codec->component.dai_list, list) |
| dai->codec = codec; |
| |
| mutex_lock(&client_mutex); |
| snd_soc_component_add_unlocked(&codec->component); |
| list_add(&codec->list, &codec_list); |
| mutex_unlock(&client_mutex); |
| |
| dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", |
| codec->component.name); |
| return 0; |
| |
| err_cleanup: |
| snd_soc_component_cleanup(&codec->component); |
| err_free: |
| kfree(codec); |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_register_codec); |
| |
| /** |
| * snd_soc_unregister_codec - Unregister a codec from the ASoC core |
| * |
| * @dev: codec to unregister |
| */ |
| void snd_soc_unregister_codec(struct device *dev) |
| { |
| struct snd_soc_codec *codec; |
| |
| mutex_lock(&client_mutex); |
| list_for_each_entry(codec, &codec_list, list) { |
| if (dev == codec->dev) |
| goto found; |
| } |
| mutex_unlock(&client_mutex); |
| return; |
| |
| found: |
| list_del(&codec->list); |
| snd_soc_component_del_unlocked(&codec->component); |
| mutex_unlock(&client_mutex); |
| |
| dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", |
| codec->component.name); |
| |
| snd_soc_component_cleanup(&codec->component); |
| snd_soc_cache_exit(codec); |
| kfree(codec); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_unregister_codec); |
| |
| /* Retrieve a card's name from device tree */ |
| int snd_soc_of_parse_card_name_from_node(struct snd_soc_card *card, |
| struct device_node *np, |
| const char *propname) |
| { |
| int ret; |
| |
| if (!card->dev) { |
| pr_err("card->dev is not set before calling %s\n", __func__); |
| return -EINVAL; |
| } |
| |
| if (!np) |
| np = card->dev->of_node; |
| |
| ret = of_property_read_string_index(np, propname, 0, &card->name); |
| /* |
| * EINVAL means the property does not exist. This is fine providing |
| * card->name was previously set, which is checked later in |
| * snd_soc_register_card. |
| */ |
| if (ret < 0 && ret != -EINVAL) { |
| dev_err(card->dev, |
| "ASoC: Property '%s' could not be read: %d\n", |
| propname, ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name_from_node); |
| |
| static const struct snd_soc_dapm_widget simple_widgets[] = { |
| SND_SOC_DAPM_MIC("Microphone", NULL), |
| SND_SOC_DAPM_LINE("Line", NULL), |
| SND_SOC_DAPM_HP("Headphone", NULL), |
| SND_SOC_DAPM_SPK("Speaker", NULL), |
| }; |
| |
| int snd_soc_of_parse_audio_simple_widgets_from_node(struct snd_soc_card *card, |
| struct device_node *np, |
| const char *propname) |
| { |
| struct snd_soc_dapm_widget *widgets; |
| const char *template, *wname; |
| int i, j, num_widgets, ret; |
| |
| if (!np) |
| np = card->dev->of_node; |
| |
| num_widgets = of_property_count_strings(np, propname); |
| if (num_widgets < 0) { |
| dev_err(card->dev, |
| "ASoC: Property '%s' does not exist\n", propname); |
| return -EINVAL; |
| } |
| if (num_widgets & 1) { |
| dev_err(card->dev, |
| "ASoC: Property '%s' length is not even\n", propname); |
| return -EINVAL; |
| } |
| |
| num_widgets /= 2; |
| if (!num_widgets) { |
| dev_err(card->dev, "ASoC: Property '%s's length is zero\n", |
| propname); |
| return -EINVAL; |
| } |
| |
| widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets), |
| GFP_KERNEL); |
| if (!widgets) { |
| dev_err(card->dev, |
| "ASoC: Could not allocate memory for widgets\n"); |
| return -ENOMEM; |
| } |
| |
| for (i = 0; i < num_widgets; i++) { |
| ret = of_property_read_string_index(np, propname, |
| 2 * i, &template); |
| if (ret) { |
| dev_err(card->dev, |
| "ASoC: Property '%s' index %d read error:%d\n", |
| propname, 2 * i, ret); |
| return -EINVAL; |
| } |
| |
| for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) { |
| if (!strncmp(template, simple_widgets[j].name, |
| strlen(simple_widgets[j].name))) { |
| widgets[i] = simple_widgets[j]; |
| break; |
| } |
| } |
| |
| if (j >= ARRAY_SIZE(simple_widgets)) { |
| dev_err(card->dev, |
| "ASoC: DAPM widget '%s' is not supported\n", |
| template); |
| return -EINVAL; |
| } |
| |
| ret = of_property_read_string_index(np, propname, |
| (2 * i) + 1, |
| &wname); |
| if (ret) { |
| dev_err(card->dev, |
| "ASoC: Property '%s' index %d read error:%d\n", |
| propname, (2 * i) + 1, ret); |
| return -EINVAL; |
| } |
| |
| widgets[i].name = wname; |
| } |
| |
| card->of_dapm_widgets = widgets; |
| card->num_of_dapm_widgets = num_widgets; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets_from_node); |
| |
| static int snd_soc_of_get_slot_mask(struct device_node *np, |
| const char *prop_name, |
| unsigned int *mask) |
| { |
| u32 val; |
| const __be32 *of_slot_mask = of_get_property(np, prop_name, &val); |
| int i; |
| |
| if (!of_slot_mask) |
| return 0; |
| val /= sizeof(u32); |
| for (i = 0; i < val; i++) |
| if (be32_to_cpup(&of_slot_mask[i])) |
| *mask |= (1 << i); |
| |
| return val; |
| } |
| |
| int snd_soc_of_parse_tdm_slot(struct device_node *np, |
| unsigned int *tx_mask, |
| unsigned int *rx_mask, |
| unsigned int *slots, |
| unsigned int *slot_width) |
| { |
| u32 val; |
| int ret; |
| |
| if (tx_mask) |
| snd_soc_of_get_slot_mask(np, "dai-tdm-slot-tx-mask", tx_mask); |
| if (rx_mask) |
| snd_soc_of_get_slot_mask(np, "dai-tdm-slot-rx-mask", rx_mask); |
| |
| if (of_property_read_bool(np, "dai-tdm-slot-num")) { |
| ret = of_property_read_u32(np, "dai-tdm-slot-num", &val); |
| if (ret) |
| return ret; |
| |
| if (slots) |
| *slots = val; |
| } |
| |
| if (of_property_read_bool(np, "dai-tdm-slot-width")) { |
| ret = of_property_read_u32(np, "dai-tdm-slot-width", &val); |
| if (ret) |
| return ret; |
| |
| if (slot_width) |
| *slot_width = val; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot); |
| |
| void snd_soc_of_parse_audio_prefix_from_node(struct snd_soc_card *card, |
| struct device_node *np, |
| struct snd_soc_codec_conf *codec_conf, |
| struct device_node *of_node, |
| const char *propname) |
| { |
| const char *str; |
| int ret; |
| |
| if (!np) |
| np = card->dev->of_node; |
| |
| ret = of_property_read_string(np, propname, &str); |
| if (ret < 0) { |
| /* no prefix is not error */ |
| return; |
| } |
| |
| codec_conf->of_node = of_node; |
| codec_conf->name_prefix = str; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_prefix_from_node); |
| |
| int snd_soc_of_parse_audio_routing_from_node(struct snd_soc_card *card, |
| struct device_node *np, |
| const char *propname) |
| { |
| int num_routes; |
| struct snd_soc_dapm_route *routes; |
| int i, ret; |
| |
| if (!np) |
| np = card->dev->of_node; |
| |
| 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); |
| return -EINVAL; |
| } |
| ret = of_property_read_string_index(np, propname, |
| (2 * i) + 1, &routes[i].source); |
| if (ret) { |
| dev_err(card->dev, |
| "ASoC: Property '%s' index %d could not be read: %d\n", |
| propname, (2 * i) + 1, ret); |
| return -EINVAL; |
| } |
| } |
| |
| card->num_of_dapm_routes = num_routes; |
| card->of_dapm_routes = routes; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing_from_node); |
| |
| unsigned int snd_soc_of_parse_daifmt(struct device_node *np, |
| const char *prefix, |
| struct device_node **bitclkmaster, |
| struct device_node **framemaster) |
| { |
| int ret, i; |
| char prop[128]; |
| unsigned int format = 0; |
| int bit, frame; |
| const char *str; |
| struct { |
| char *name; |
| unsigned int val; |
| } of_fmt_table[] = { |
| { "i2s", SND_SOC_DAIFMT_I2S }, |
| { "right_j", SND_SOC_DAIFMT_RIGHT_J }, |
| { "left_j", SND_SOC_DAIFMT_LEFT_J }, |
| { "dsp_a", SND_SOC_DAIFMT_DSP_A }, |
| { "dsp_b", SND_SOC_DAIFMT_DSP_B }, |
| { "ac97", SND_SOC_DAIFMT_AC97 }, |
| { "pdm", SND_SOC_DAIFMT_PDM}, |
| { "msb", SND_SOC_DAIFMT_MSB }, |
| { "lsb", SND_SOC_DAIFMT_LSB }, |
| }; |
| |
| if (!prefix) |
| prefix = ""; |
| |
| /* |
| * check "[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_property_read_bool(np, prop)) |
| format |= SND_SOC_DAIFMT_CONT; |
| else |
| format |= SND_SOC_DAIFMT_GATED; |
| |
| /* |
| * check "[prefix]bitclock-inversion" |
| * check "[prefix]frame-inversion" |
| * SND_SOC_DAIFMT_INV_MASK area |
| */ |
| snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix); |
| bit = !!of_get_property(np, prop, NULL); |
| |
| snprintf(prop, sizeof(prop), "%sframe-inversion", prefix); |
| frame = !!of_get_property(np, prop, NULL); |
| |
| switch ((bit << 4) + frame) { |
| case 0x11: |
| format |= SND_SOC_DAIFMT_IB_IF; |
| break; |
| case 0x10: |
| format |= SND_SOC_DAIFMT_IB_NF; |
| break; |
| case 0x01: |
| format |= SND_SOC_DAIFMT_NB_IF; |
| break; |
| default: |
| /* SND_SOC_DAIFMT_NB_NF is default */ |
| break; |
| } |
| |
| /* |
| * check "[prefix]bitclock-master" |
| * check "[prefix]frame-master" |
| * SND_SOC_DAIFMT_MASTER_MASK area |
| */ |
| snprintf(prop, sizeof(prop), "%sbitclock-master", prefix); |
| bit = !!of_get_property(np, prop, NULL); |
| if (bit && bitclkmaster) |
| *bitclkmaster = of_parse_phandle(np, prop, 0); |
| |
| snprintf(prop, sizeof(prop), "%sframe-master", prefix); |
| frame = !!of_get_property(np, prop, NULL); |
| if (frame && framemaster) |
| *framemaster = of_parse_phandle(np, prop, 0); |
| |
| switch ((bit << 4) + frame) { |
| case 0x11: |
| format |= SND_SOC_DAIFMT_CBM_CFM; |
| break; |
| case 0x10: |
| format |= SND_SOC_DAIFMT_CBM_CFS; |
| break; |
| case 0x01: |
| format |= SND_SOC_DAIFMT_CBS_CFM; |
| break; |
| default: |
| format |= SND_SOC_DAIFMT_CBS_CFS; |
| break; |
| } |
| |
| return format; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt); |
| |
| int snd_soc_get_dai_name(struct of_phandle_args *args, |
| const char **dai_name) |
| { |
| struct snd_soc_component *pos; |
| struct device_node *component_of_node; |
| int ret = -EPROBE_DEFER; |
| |
| mutex_lock(&client_mutex); |
| list_for_each_entry(pos, &component_list, list) { |
| component_of_node = pos->dev->of_node; |
| if (!component_of_node && pos->dev->parent) |
| component_of_node = pos->dev->parent->of_node; |
| |
| if (component_of_node != args->np) |
| continue; |
| |
| if (pos->driver->of_xlate_dai_name) { |
| ret = pos->driver->of_xlate_dai_name(pos, |
| args, |
| dai_name); |
| } else { |
| int id = -1; |
| |
| switch (args->args_count) { |
| case 0: |
| id = 0; /* same as dai_drv[0] */ |
| break; |
| case 1: |
| id = args->args[0]; |
| break; |
| default: |
| /* not supported */ |
| break; |
| } |
| |
| if (id < 0 || id >= pos->num_dai) { |
| ret = -EINVAL; |
| continue; |
| } |
| |
| ret = 0; |
| |
| *dai_name = pos->dai_drv[id].name; |
| if (!*dai_name) |
| *dai_name = pos->name; |
| } |
| |
| break; |
| } |
| mutex_unlock(&client_mutex); |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_dai_name); |
| |
| int snd_soc_of_get_dai_name(struct device_node *of_node, |
| const char **dai_name) |
| { |
| struct of_phandle_args args; |
| int ret; |
| |
| ret = of_parse_phandle_with_args(of_node, "sound-dai", |
| "#sound-dai-cells", 0, &args); |
| if (ret) |
| return ret; |
| |
| ret = snd_soc_get_dai_name(&args, dai_name); |
| |
| of_node_put(args.np); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name); |
| |
| /* |
| * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree |
| * @dev: Card device |
| * @of_node: Device node |
| * @dai_link: DAI link |
| * |
| * Builds an array of CODEC DAI components from the DAI link property |
| * 'sound-dai'. |
| * The array is set in the DAI link and the number of DAIs is set accordingly. |
| * The device nodes in the array (of_node) must be dereferenced by the caller. |
| * |
| * Returns 0 for success |
| */ |
| int snd_soc_of_get_dai_link_codecs(struct device *dev, |
| struct device_node *of_node, |
| struct snd_soc_dai_link *dai_link) |
| { |
| struct of_phandle_args args; |
| struct snd_soc_dai_link_component *component; |
| char *name; |
| int index, num_codecs, ret; |
| |
| /* Count the number of CODECs */ |
| name = "sound-dai"; |
| num_codecs = of_count_phandle_with_args(of_node, name, |
| "#sound-dai-cells"); |
| if (num_codecs <= 0) { |
| if (num_codecs == -ENOENT) |
| dev_err(dev, "No 'sound-dai' property\n"); |
| else |
| dev_err(dev, "Bad phandle in 'sound-dai'\n"); |
| return num_codecs; |
| } |
| component = devm_kzalloc(dev, |
| sizeof *component * num_codecs, |
| GFP_KERNEL); |
| if (!component) |
| return -ENOMEM; |
| dai_link->codecs = component; |
| dai_link->num_codecs = num_codecs; |
| |
| /* Parse the list */ |
| for (index = 0, component = dai_link->codecs; |
| index < dai_link->num_codecs; |
| index++, component++) { |
| ret = of_parse_phandle_with_args(of_node, name, |
| "#sound-dai-cells", |
| index, &args); |
| if (ret) |
| goto err; |
| component->of_node = args.np; |
| ret = snd_soc_get_dai_name(&args, &component->dai_name); |
| if (ret < 0) |
| goto err; |
| } |
| return 0; |
| err: |
| for (index = 0, component = dai_link->codecs; |
| index < dai_link->num_codecs; |
| index++, component++) { |
| if (!component->of_node) |
| break; |
| of_node_put(component->of_node); |
| component->of_node = NULL; |
| } |
| dai_link->codecs = NULL; |
| dai_link->num_codecs = 0; |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs); |
| |
| static int __init snd_soc_init(void) |
| { |
| snd_soc_debugfs_init(); |
| snd_soc_util_init(); |
| |
| return platform_driver_register(&soc_driver); |
| } |
| module_init(snd_soc_init); |
| |
| static void __exit snd_soc_exit(void) |
| { |
| snd_soc_util_exit(); |
| snd_soc_debugfs_exit(); |
| |
| #ifdef CONFIG_DEBUG_FS |
| #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"); |