| /* |
| * 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 <linux/gpio.h> |
| #include <linux/of_gpio.h> |
| #include <sound/ac97_codec.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/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)"); |
| |
| struct snd_ac97_reset_cfg { |
| struct pinctrl *pctl; |
| struct pinctrl_state *pstate_reset; |
| struct pinctrl_state *pstate_warm_reset; |
| struct pinctrl_state *pstate_run; |
| int gpio_sdata; |
| int gpio_sync; |
| int gpio_reset; |
| }; |
| |
| /* returns the minimum number of bytes needed to represent |
| * a particular given value */ |
| static int min_bytes_needed(unsigned long val) |
| { |
| int c = 0; |
| int i; |
| |
| for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c) |
| if (val & (1UL << i)) |
| break; |
| c = (sizeof val * 8) - c; |
| if (!c || (c % 8)) |
| c = (c + 8) / 8; |
| else |
| c /= 8; |
| return c; |
| } |
| |
| /* fill buf which is 'len' bytes with a formatted |
| * string of the form 'reg: value\n' */ |
| static int format_register_str(struct snd_soc_codec *codec, |
| unsigned int reg, char *buf, size_t len) |
| { |
| int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2; |
| int regsize = codec->driver->reg_word_size * 2; |
| int ret; |
| char tmpbuf[len + 1]; |
| char regbuf[regsize + 1]; |
| |
| /* since tmpbuf is allocated on the stack, warn the callers if they |
| * try to abuse this function */ |
| WARN_ON(len > 63); |
| |
| /* +2 for ': ' and + 1 for '\n' */ |
| if (wordsize + regsize + 2 + 1 != len) |
| return -EINVAL; |
| |
| ret = snd_soc_read(codec, reg); |
| if (ret < 0) { |
| memset(regbuf, 'X', regsize); |
| regbuf[regsize] = '\0'; |
| } else { |
| snprintf(regbuf, regsize + 1, "%.*x", regsize, ret); |
| } |
| |
| /* prepare the buffer */ |
| snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf); |
| /* copy it back to the caller without the '\0' */ |
| memcpy(buf, tmpbuf, len); |
| |
| return 0; |
| } |
| |
| /* codec register dump */ |
| static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf, |
| size_t count, loff_t pos) |
| { |
| int i, step = 1; |
| int wordsize, regsize; |
| int len; |
| size_t total = 0; |
| loff_t p = 0; |
| |
| wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2; |
| regsize = codec->driver->reg_word_size * 2; |
| |
| len = wordsize + regsize + 2 + 1; |
| |
| if (!codec->driver->reg_cache_size) |
| return 0; |
| |
| if (codec->driver->reg_cache_step) |
| step = codec->driver->reg_cache_step; |
| |
| for (i = 0; i < codec->driver->reg_cache_size; i += step) { |
| if (!snd_soc_codec_readable_register(codec, i)) |
| continue; |
| if (codec->driver->display_register) { |
| count += codec->driver->display_register(codec, buf + count, |
| PAGE_SIZE - count, i); |
| } else { |
| /* only support larger than PAGE_SIZE bytes debugfs |
| * entries for the default case */ |
| if (p >= pos) { |
| if (total + len >= count - 1) |
| break; |
| format_register_str(codec, i, buf + total, len); |
| total += len; |
| } |
| p += len; |
| } |
| } |
| |
| total = min(total, count - 1); |
| |
| return total; |
| } |
| |
| static ssize_t codec_reg_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
| |
| return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0); |
| } |
| |
| static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); |
| |
| static ssize_t pmdown_time_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
| |
| return sprintf(buf, "%ld\n", rtd->pmdown_time); |
| } |
| |
| static ssize_t pmdown_time_set(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
| int ret; |
| |
| ret = kstrtol(buf, 10, &rtd->pmdown_time); |
| if (ret) |
| return ret; |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set); |
| |
| #ifdef CONFIG_DEBUG_FS |
| static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| ssize_t ret; |
| struct snd_soc_codec *codec = file->private_data; |
| char *buf; |
| |
| if (*ppos < 0 || !count) |
| return -EINVAL; |
| |
| buf = kmalloc(count, GFP_KERNEL); |
| if (!buf) |
| return -ENOMEM; |
| |
| ret = soc_codec_reg_show(codec, buf, count, *ppos); |
| if (ret >= 0) { |
| if (copy_to_user(user_buf, buf, ret)) { |
| kfree(buf); |
| return -EFAULT; |
| } |
| *ppos += ret; |
| } |
| |
| kfree(buf); |
| return ret; |
| } |
| |
| static ssize_t codec_reg_write_file(struct file *file, |
| const char __user *user_buf, size_t count, loff_t *ppos) |
| { |
| char buf[32]; |
| size_t buf_size; |
| char *start = buf; |
| unsigned long reg, value; |
| struct snd_soc_codec *codec = file->private_data; |
| 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_codec_debugfs(struct snd_soc_codec *codec) |
| { |
| struct dentry *debugfs_card_root = codec->card->debugfs_card_root; |
| |
| codec->debugfs_codec_root = debugfs_create_dir(codec->name, |
| debugfs_card_root); |
| if (!codec->debugfs_codec_root) { |
| dev_warn(codec->dev, |
| "ASoC: Failed to create codec debugfs directory\n"); |
| return; |
| } |
| |
| debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root, |
| &codec->cache_sync); |
| debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root, |
| &codec->cache_only); |
| |
| codec->debugfs_reg = debugfs_create_file("codec_reg", 0644, |
| codec->debugfs_codec_root, |
| codec, &codec_reg_fops); |
| if (!codec->debugfs_reg) |
| dev_warn(codec->dev, |
| "ASoC: Failed to create codec register debugfs file\n"); |
| |
| snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root); |
| } |
| |
| static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) |
| { |
| debugfs_remove_recursive(codec->debugfs_codec_root); |
| } |
| |
| static void soc_init_platform_debugfs(struct snd_soc_platform *platform) |
| { |
| struct dentry *debugfs_card_root = platform->card->debugfs_card_root; |
| |
| platform->debugfs_platform_root = debugfs_create_dir(platform->name, |
| debugfs_card_root); |
| if (!platform->debugfs_platform_root) { |
| dev_warn(platform->dev, |
| "ASoC: Failed to create platform debugfs directory\n"); |
| return; |
| } |
| |
| snd_soc_dapm_debugfs_init(&platform->dapm, |
| platform->debugfs_platform_root); |
| } |
| |
| static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform) |
| { |
| debugfs_remove_recursive(platform->debugfs_platform_root); |
| } |
| |
| static ssize_t codec_list_read_file(struct file *file, char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| ssize_t len, ret = 0; |
| struct snd_soc_codec *codec; |
| |
| if (!buf) |
| return -ENOMEM; |
| |
| list_for_each_entry(codec, &codec_list, list) { |
| len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", |
| codec->name); |
| if (len >= 0) |
| ret += len; |
| if (ret > PAGE_SIZE) { |
| ret = PAGE_SIZE; |
| break; |
| } |
| } |
| |
| if (ret >= 0) |
| ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); |
| |
| kfree(buf); |
| |
| return ret; |
| } |
| |
| static const struct file_operations codec_list_fops = { |
| .read = codec_list_read_file, |
| .llseek = default_llseek,/* read accesses f_pos */ |
| }; |
| |
| static ssize_t dai_list_read_file(struct file *file, char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| ssize_t len, ret = 0; |
| struct snd_soc_component *component; |
| struct snd_soc_dai *dai; |
| |
| if (!buf) |
| return -ENOMEM; |
| |
| 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; |
| } |
| } |
| } |
| |
| ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); |
| |
| kfree(buf); |
| |
| return ret; |
| } |
| |
| static const struct file_operations dai_list_fops = { |
| .read = dai_list_read_file, |
| .llseek = default_llseek,/* read accesses f_pos */ |
| }; |
| |
| static ssize_t platform_list_read_file(struct file *file, |
| char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| ssize_t len, ret = 0; |
| struct snd_soc_platform *platform; |
| |
| if (!buf) |
| return -ENOMEM; |
| |
| list_for_each_entry(platform, &platform_list, list) { |
| len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", |
| platform->name); |
| if (len >= 0) |
| ret += len; |
| if (ret > PAGE_SIZE) { |
| ret = PAGE_SIZE; |
| break; |
| } |
| } |
| |
| ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); |
| |
| kfree(buf); |
| |
| return ret; |
| } |
| |
| static const struct file_operations platform_list_fops = { |
| .read = platform_list_read_file, |
| .llseek = default_llseek,/* read accesses f_pos */ |
| }; |
| |
| static void soc_init_card_debugfs(struct snd_soc_card *card) |
| { |
| card->debugfs_card_root = debugfs_create_dir(card->name, |
| snd_soc_debugfs_root); |
| if (!card->debugfs_card_root) { |
| dev_warn(card->dev, |
| "ASoC: Failed to create card debugfs directory\n"); |
| return; |
| } |
| |
| card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644, |
| card->debugfs_card_root, |
| &card->pop_time); |
| if (!card->debugfs_pop_time) |
| dev_warn(card->dev, |
| "ASoC: Failed to create pop time debugfs file\n"); |
| } |
| |
| static void soc_cleanup_card_debugfs(struct snd_soc_card *card) |
| { |
| debugfs_remove_recursive(card->debugfs_card_root); |
| } |
| |
| #else |
| |
| static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec) |
| { |
| } |
| |
| static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) |
| { |
| } |
| |
| static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform) |
| { |
| } |
| |
| static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform) |
| { |
| } |
| |
| static inline void soc_init_card_debugfs(struct snd_soc_card *card) |
| { |
| } |
| |
| static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card) |
| { |
| } |
| #endif |
| |
| struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card, |
| const char *dai_link, int stream) |
| { |
| int i; |
| |
| for (i = 0; i < card->num_links; i++) { |
| if (card->rtd[i].dai_link->no_pcm && |
| !strcmp(card->rtd[i].dai_link->name, dai_link)) |
| return card->rtd[i].pcm->streams[stream].substream; |
| } |
| dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link); |
| return NULL; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream); |
| |
| struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card, |
| const char *dai_link) |
| { |
| int i; |
| |
| for (i = 0; i < card->num_links; i++) { |
| if (!strcmp(card->rtd[i].dai_link->name, dai_link)) |
| return &card->rtd[i]; |
| } |
| dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link); |
| return NULL; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime); |
| |
| #ifdef CONFIG_SND_SOC_AC97_BUS |
| /* unregister ac97 codec */ |
| static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) |
| { |
| if (codec->ac97->dev.bus) |
| device_unregister(&codec->ac97->dev); |
| return 0; |
| } |
| |
| /* stop no dev release warning */ |
| static void soc_ac97_device_release(struct device *dev){} |
| |
| /* register ac97 codec to bus */ |
| static int soc_ac97_dev_register(struct snd_soc_codec *codec) |
| { |
| int err; |
| |
| codec->ac97->dev.bus = &ac97_bus_type; |
| codec->ac97->dev.parent = codec->card->dev; |
| codec->ac97->dev.release = soc_ac97_device_release; |
| |
| dev_set_name(&codec->ac97->dev, "%d-%d:%s", |
| codec->card->snd_card->number, 0, codec->name); |
| err = device_register(&codec->ac97->dev); |
| if (err < 0) { |
| dev_err(codec->dev, "ASoC: Can't register ac97 bus\n"); |
| codec->ac97->dev.bus = NULL; |
| return err; |
| } |
| return 0; |
| } |
| #endif |
| |
| 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_codec *codec; |
| int i; |
| |
| /* If the initialization of this soc device failed, there is no codec |
| * associated with it. Just bail out in this case. |
| */ |
| if (list_empty(&card->codec_dev_list)) |
| return 0; |
| |
| /* Due to the resume being scheduled into a workqueue we could |
| * suspend before that's finished - wait for it to complete. |
| */ |
| snd_power_lock(card->snd_card); |
| snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0); |
| snd_power_unlock(card->snd_card); |
| |
| /* we're going to block userspace touching us until resume completes */ |
| snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot); |
| |
| /* mute any active DACs */ |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *dai = card->rtd[i].codec_dai; |
| struct snd_soc_dai_driver *drv = dai->driver; |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| if (drv->ops->digital_mute && dai->playback_active) |
| drv->ops->digital_mute(dai, 1); |
| } |
| |
| /* suspend all pcms */ |
| for (i = 0; i < card->num_rtd; i++) { |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| snd_pcm_suspend_all(card->rtd[i].pcm); |
| } |
| |
| if (card->suspend_pre) |
| card->suspend_pre(card); |
| |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| struct snd_soc_platform *platform = card->rtd[i].platform; |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control) |
| cpu_dai->driver->suspend(cpu_dai); |
| if (platform->driver->suspend && !platform->suspended) { |
| platform->driver->suspend(cpu_dai); |
| platform->suspended = 1; |
| } |
| } |
| |
| /* close any waiting streams and save state */ |
| for (i = 0; i < card->num_rtd; i++) { |
| flush_delayed_work(&card->rtd[i].delayed_work); |
| card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level; |
| } |
| |
| for (i = 0; i < card->num_rtd; i++) { |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| snd_soc_dapm_stream_event(&card->rtd[i], |
| SNDRV_PCM_STREAM_PLAYBACK, |
| SND_SOC_DAPM_STREAM_SUSPEND); |
| |
| snd_soc_dapm_stream_event(&card->rtd[i], |
| SNDRV_PCM_STREAM_CAPTURE, |
| SND_SOC_DAPM_STREAM_SUSPEND); |
| } |
| |
| /* Recheck all analogue paths too */ |
| dapm_mark_io_dirty(&card->dapm); |
| snd_soc_dapm_sync(&card->dapm); |
| |
| /* suspend all CODECs */ |
| list_for_each_entry(codec, &card->codec_dev_list, card_list) { |
| /* If there are paths active then the CODEC will be held with |
| * bias _ON and should not be suspended. */ |
| if (!codec->suspended && codec->driver->suspend) { |
| switch (codec->dapm.bias_level) { |
| case SND_SOC_BIAS_STANDBY: |
| /* |
| * If the CODEC is capable of idle |
| * bias off then being in STANDBY |
| * means it's doing something, |
| * otherwise fall through. |
| */ |
| if (codec->dapm.idle_bias_off) { |
| dev_dbg(codec->dev, |
| "ASoC: idle_bias_off CODEC on over suspend\n"); |
| break; |
| } |
| case SND_SOC_BIAS_OFF: |
| codec->driver->suspend(codec); |
| codec->suspended = 1; |
| codec->cache_sync = 1; |
| if (codec->using_regmap) |
| regcache_mark_dirty(codec->control_data); |
| /* deactivate pins to sleep state */ |
| pinctrl_pm_select_sleep_state(codec->dev); |
| break; |
| default: |
| dev_dbg(codec->dev, |
| "ASoC: CODEC is on over suspend\n"); |
| break; |
| } |
| } |
| } |
| |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control) |
| cpu_dai->driver->suspend(cpu_dai); |
| |
| /* 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_codec *codec; |
| int i; |
| |
| /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
| * so userspace apps are blocked from touching us |
| */ |
| |
| dev_dbg(card->dev, "ASoC: starting resume work\n"); |
| |
| /* Bring us up into D2 so that DAPM starts enabling things */ |
| snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2); |
| |
| if (card->resume_pre) |
| card->resume_pre(card); |
| |
| /* resume AC97 DAIs */ |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control) |
| cpu_dai->driver->resume(cpu_dai); |
| } |
| |
| list_for_each_entry(codec, &card->codec_dev_list, card_list) { |
| /* If the CODEC was idle over suspend then it will have been |
| * left with bias OFF or STANDBY and suspended so we must now |
| * resume. Otherwise the suspend was suppressed. |
| */ |
| if (codec->driver->resume && codec->suspended) { |
| switch (codec->dapm.bias_level) { |
| case SND_SOC_BIAS_STANDBY: |
| case SND_SOC_BIAS_OFF: |
| codec->driver->resume(codec); |
| codec->suspended = 0; |
| break; |
| default: |
| dev_dbg(codec->dev, |
| "ASoC: CODEC was on over suspend\n"); |
| break; |
| } |
| } |
| } |
| |
| for (i = 0; i < card->num_rtd; i++) { |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| snd_soc_dapm_stream_event(&card->rtd[i], |
| SNDRV_PCM_STREAM_PLAYBACK, |
| SND_SOC_DAPM_STREAM_RESUME); |
| |
| snd_soc_dapm_stream_event(&card->rtd[i], |
| SNDRV_PCM_STREAM_CAPTURE, |
| SND_SOC_DAPM_STREAM_RESUME); |
| } |
| |
| /* unmute any active DACs */ |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *dai = card->rtd[i].codec_dai; |
| struct snd_soc_dai_driver *drv = dai->driver; |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| if (drv->ops->digital_mute && dai->playback_active) |
| drv->ops->digital_mute(dai, 0); |
| } |
| |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| struct snd_soc_platform *platform = card->rtd[i].platform; |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control) |
| cpu_dai->driver->resume(cpu_dai); |
| if (platform->driver->resume && platform->suspended) { |
| platform->driver->resume(cpu_dai); |
| platform->suspended = 0; |
| } |
| } |
| |
| if (card->resume_post) |
| card->resume_post(card); |
| |
| dev_dbg(card->dev, "ASoC: resume work completed\n"); |
| |
| /* userspace can access us now we are back as we were before */ |
| snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0); |
| |
| /* Recheck all analogue paths too */ |
| dapm_mark_io_dirty(&card->dapm); |
| snd_soc_dapm_sync(&card->dapm); |
| } |
| |
| /* powers up audio subsystem after a suspend */ |
| int snd_soc_resume(struct device *dev) |
| { |
| struct snd_soc_card *card = dev_get_drvdata(dev); |
| int i, ac97_control = 0; |
| |
| /* If the initialization of this soc device failed, there is no codec |
| * associated with it. Just bail out in this case. |
| */ |
| if (list_empty(&card->codec_dev_list)) |
| return 0; |
| |
| /* activate pins from sleep state */ |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai; |
| if (cpu_dai->active) |
| pinctrl_pm_select_default_state(cpu_dai->dev); |
| if (codec_dai->active) |
| pinctrl_pm_select_default_state(codec_dai->dev); |
| } |
| |
| /* AC97 devices might have other drivers hanging off them so |
| * need to resume immediately. Other drivers don't have that |
| * problem and may take a substantial amount of time to resume |
| * due to I/O costs and anti-pop so handle them out of line. |
| */ |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| ac97_control |= cpu_dai->driver->ac97_control; |
| } |
| if (ac97_control) { |
| dev_dbg(dev, "ASoC: Resuming AC97 immediately\n"); |
| soc_resume_deferred(&card->deferred_resume_work); |
| } else { |
| dev_dbg(dev, "ASoC: Scheduling resume work\n"); |
| if (!schedule_work(&card->deferred_resume_work)) |
| dev_err(dev, "ASoC: resume work item may be lost\n"); |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_resume); |
| #else |
| #define snd_soc_suspend NULL |
| #define snd_soc_resume NULL |
| #endif |
| |
| static const struct snd_soc_dai_ops null_dai_ops = { |
| }; |
| |
| static struct snd_soc_codec *soc_find_codec(const struct device_node *codec_of_node, |
| const char *codec_name) |
| { |
| struct snd_soc_codec *codec; |
| |
| list_for_each_entry(codec, &codec_list, list) { |
| if (codec_of_node) { |
| if (codec->dev->of_node != codec_of_node) |
| continue; |
| } else { |
| if (strcmp(codec->name, codec_name)) |
| continue; |
| } |
| |
| return codec; |
| } |
| |
| return NULL; |
| } |
| |
| static struct snd_soc_dai *soc_find_codec_dai(struct snd_soc_codec *codec, |
| const char *codec_dai_name) |
| { |
| struct snd_soc_dai *codec_dai; |
| |
| list_for_each_entry(codec_dai, &codec->component.dai_list, list) { |
| if (!strcmp(codec_dai->name, codec_dai_name)) { |
| return codec_dai; |
| } |
| } |
| |
| return NULL; |
| } |
| |
| static int soc_bind_dai_link(struct snd_soc_card *card, int num) |
| { |
| struct snd_soc_dai_link *dai_link = &card->dai_link[num]; |
| struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| struct snd_soc_component *component; |
| struct snd_soc_platform *platform; |
| struct snd_soc_dai *cpu_dai; |
| const char *platform_name; |
| |
| dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num); |
| |
| /* Find CPU DAI from registered DAIs*/ |
| list_for_each_entry(component, &component_list, list) { |
| if (dai_link->cpu_of_node && |
| component->dev->of_node != dai_link->cpu_of_node) |
| continue; |
| if (dai_link->cpu_name && |
| strcmp(dev_name(component->dev), dai_link->cpu_name)) |
| continue; |
| list_for_each_entry(cpu_dai, &component->dai_list, list) { |
| if (dai_link->cpu_dai_name && |
| strcmp(cpu_dai->name, dai_link->cpu_dai_name)) |
| continue; |
| |
| rtd->cpu_dai = cpu_dai; |
| } |
| } |
| |
| if (!rtd->cpu_dai) { |
| dev_err(card->dev, "ASoC: CPU DAI %s not registered\n", |
| dai_link->cpu_dai_name); |
| return -EPROBE_DEFER; |
| } |
| |
| /* Find CODEC from registered list */ |
| rtd->codec = soc_find_codec(dai_link->codec_of_node, |
| dai_link->codec_name); |
| if (!rtd->codec) { |
| dev_err(card->dev, "ASoC: CODEC %s not registered\n", |
| dai_link->codec_name); |
| return -EPROBE_DEFER; |
| } |
| |
| /* Find CODEC DAI from registered list */ |
| rtd->codec_dai = soc_find_codec_dai(rtd->codec, |
| dai_link->codec_dai_name); |
| if (!rtd->codec_dai) { |
| dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n", |
| dai_link->codec_dai_name); |
| return -EPROBE_DEFER; |
| } |
| |
| /* if there's no platform we match on the empty platform */ |
| platform_name = dai_link->platform_name; |
| if (!platform_name && !dai_link->platform_of_node) |
| platform_name = "snd-soc-dummy"; |
| |
| /* find one from the set of registered platforms */ |
| list_for_each_entry(platform, &platform_list, list) { |
| if (dai_link->platform_of_node) { |
| if (platform->dev->of_node != |
| dai_link->platform_of_node) |
| continue; |
| } else { |
| if (strcmp(platform->name, platform_name)) |
| continue; |
| } |
| |
| rtd->platform = platform; |
| } |
| if (!rtd->platform) { |
| dev_err(card->dev, "ASoC: platform %s not registered\n", |
| dai_link->platform_name); |
| return -EPROBE_DEFER; |
| } |
| |
| card->num_rtd++; |
| |
| return 0; |
| } |
| |
| static int soc_remove_platform(struct snd_soc_platform *platform) |
| { |
| int ret; |
| |
| if (platform->driver->remove) { |
| ret = platform->driver->remove(platform); |
| if (ret < 0) |
| dev_err(platform->dev, "ASoC: failed to remove %d\n", |
| ret); |
| } |
| |
| /* Make sure all DAPM widgets are freed */ |
| snd_soc_dapm_free(&platform->dapm); |
| |
| soc_cleanup_platform_debugfs(platform); |
| platform->probed = 0; |
| list_del(&platform->card_list); |
| module_put(platform->dev->driver->owner); |
| |
| return 0; |
| } |
| |
| static void soc_remove_codec(struct snd_soc_codec *codec) |
| { |
| int err; |
| |
| if (codec->driver->remove) { |
| err = codec->driver->remove(codec); |
| if (err < 0) |
| dev_err(codec->dev, "ASoC: failed to remove %d\n", err); |
| } |
| |
| /* Make sure all DAPM widgets are freed */ |
| snd_soc_dapm_free(&codec->dapm); |
| |
| soc_cleanup_codec_debugfs(codec); |
| codec->probed = 0; |
| list_del(&codec->card_list); |
| module_put(codec->dev->driver->owner); |
| } |
| |
| static void soc_remove_codec_dai(struct snd_soc_dai *codec_dai, int order) |
| { |
| int err; |
| |
| if (codec_dai && codec_dai->probed && |
| codec_dai->driver->remove_order == order) { |
| if (codec_dai->driver->remove) { |
| err = codec_dai->driver->remove(codec_dai); |
| if (err < 0) |
| dev_err(codec_dai->dev, |
| "ASoC: failed to remove %s: %d\n", |
| codec_dai->name, err); |
| } |
| codec_dai->probed = 0; |
| list_del(&codec_dai->card_list); |
| } |
| } |
| |
| static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order) |
| { |
| struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai; |
| int err; |
| |
| /* unregister the rtd device */ |
| if (rtd->dev_registered) { |
| device_remove_file(rtd->dev, &dev_attr_pmdown_time); |
| device_remove_file(rtd->dev, &dev_attr_codec_reg); |
| device_unregister(rtd->dev); |
| rtd->dev_registered = 0; |
| } |
| |
| /* remove the CODEC DAI */ |
| soc_remove_codec_dai(codec_dai, order); |
| |
| /* remove the cpu_dai */ |
| if (cpu_dai && cpu_dai->probed && |
| cpu_dai->driver->remove_order == order) { |
| if (cpu_dai->driver->remove) { |
| err = cpu_dai->driver->remove(cpu_dai); |
| if (err < 0) |
| dev_err(cpu_dai->dev, |
| "ASoC: failed to remove %s: %d\n", |
| cpu_dai->name, err); |
| } |
| cpu_dai->probed = 0; |
| list_del(&cpu_dai->card_list); |
| |
| if (!cpu_dai->codec) { |
| snd_soc_dapm_free(&cpu_dai->dapm); |
| module_put(cpu_dai->dev->driver->owner); |
| } |
| } |
| } |
| |
| static void soc_remove_link_components(struct snd_soc_card *card, int num, |
| int order) |
| { |
| struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_codec *codec; |
| |
| /* remove the platform */ |
| if (platform && platform->probed && |
| platform->driver->remove_order == order) { |
| soc_remove_platform(platform); |
| } |
| |
| /* remove the CODEC-side CODEC */ |
| if (codec_dai) { |
| codec = codec_dai->codec; |
| if (codec && codec->probed && |
| codec->driver->remove_order == order) |
| soc_remove_codec(codec); |
| } |
| |
| /* remove any CPU-side CODEC */ |
| if (cpu_dai) { |
| codec = cpu_dai->codec; |
| if (codec && codec->probed && |
| codec->driver->remove_order == order) |
| soc_remove_codec(codec); |
| } |
| } |
| |
| static void soc_remove_dai_links(struct snd_soc_card *card) |
| { |
| int dai, order; |
| |
| for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| order++) { |
| for (dai = 0; dai < card->num_rtd; dai++) |
| soc_remove_link_dais(card, dai, order); |
| } |
| |
| for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| order++) { |
| for (dai = 0; dai < card->num_rtd; dai++) |
| soc_remove_link_components(card, dai, order); |
| } |
| |
| card->num_rtd = 0; |
| } |
| |
| static void soc_set_name_prefix(struct snd_soc_card *card, |
| struct snd_soc_codec *codec) |
| { |
| int i; |
| |
| if (card->codec_conf == NULL) |
| return; |
| |
| for (i = 0; i < card->num_configs; i++) { |
| struct snd_soc_codec_conf *map = &card->codec_conf[i]; |
| if (map->dev_name && !strcmp(codec->name, map->dev_name)) { |
| codec->name_prefix = map->name_prefix; |
| break; |
| } |
| } |
| } |
| |
| static int soc_probe_codec(struct snd_soc_card *card, |
| struct snd_soc_codec *codec) |
| { |
| int ret = 0; |
| const struct snd_soc_codec_driver *driver = codec->driver; |
| struct snd_soc_dai *dai; |
| |
| codec->card = card; |
| codec->dapm.card = card; |
| soc_set_name_prefix(card, codec); |
| |
| if (!try_module_get(codec->dev->driver->owner)) |
| return -ENODEV; |
| |
| soc_init_codec_debugfs(codec); |
| |
| if (driver->dapm_widgets) |
| snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets, |
| driver->num_dapm_widgets); |
| |
| /* Create DAPM widgets for each DAI stream */ |
| list_for_each_entry(dai, &codec->component.dai_list, list) |
| snd_soc_dapm_new_dai_widgets(&codec->dapm, dai); |
| |
| codec->dapm.idle_bias_off = driver->idle_bias_off; |
| |
| if (!codec->write && dev_get_regmap(codec->dev, NULL)) { |
| /* Set the default I/O up try regmap */ |
| ret = snd_soc_codec_set_cache_io(codec, NULL); |
| if (ret < 0) { |
| dev_err(codec->dev, |
| "Failed to set cache I/O: %d\n", ret); |
| goto err_probe; |
| } |
| } |
| |
| if (driver->probe) { |
| ret = driver->probe(codec); |
| if (ret < 0) { |
| dev_err(codec->dev, |
| "ASoC: failed to probe CODEC %d\n", ret); |
| goto err_probe; |
| } |
| WARN(codec->dapm.idle_bias_off && |
| codec->dapm.bias_level != SND_SOC_BIAS_OFF, |
| "codec %s can not start from non-off bias with idle_bias_off==1\n", |
| codec->name); |
| } |
| |
| if (driver->controls) |
| snd_soc_add_codec_controls(codec, driver->controls, |
| driver->num_controls); |
| if (driver->dapm_routes) |
| snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes, |
| driver->num_dapm_routes); |
| |
| /* mark codec as probed and add to card codec list */ |
| codec->probed = 1; |
| list_add(&codec->card_list, &card->codec_dev_list); |
| list_add(&codec->dapm.list, &card->dapm_list); |
| |
| return 0; |
| |
| err_probe: |
| soc_cleanup_codec_debugfs(codec); |
| module_put(codec->dev->driver->owner); |
| |
| return ret; |
| } |
| |
| static int soc_probe_platform(struct snd_soc_card *card, |
| struct snd_soc_platform *platform) |
| { |
| int ret = 0; |
| const struct snd_soc_platform_driver *driver = platform->driver; |
| struct snd_soc_component *component; |
| struct snd_soc_dai *dai; |
| |
| platform->card = card; |
| platform->dapm.card = card; |
| |
| if (!try_module_get(platform->dev->driver->owner)) |
| return -ENODEV; |
| |
| soc_init_platform_debugfs(platform); |
| |
| if (driver->dapm_widgets) |
| snd_soc_dapm_new_controls(&platform->dapm, |
| driver->dapm_widgets, driver->num_dapm_widgets); |
| |
| /* Create DAPM widgets for each DAI stream */ |
| list_for_each_entry(component, &component_list, list) { |
| if (component->dev != platform->dev) |
| continue; |
| list_for_each_entry(dai, &component->dai_list, list) |
| snd_soc_dapm_new_dai_widgets(&platform->dapm, dai); |
| } |
| |
| platform->dapm.idle_bias_off = 1; |
| |
| if (driver->probe) { |
| ret = driver->probe(platform); |
| if (ret < 0) { |
| dev_err(platform->dev, |
| "ASoC: failed to probe platform %d\n", ret); |
| goto err_probe; |
| } |
| } |
| |
| if (driver->controls) |
| snd_soc_add_platform_controls(platform, driver->controls, |
| driver->num_controls); |
| if (driver->dapm_routes) |
| snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes, |
| driver->num_dapm_routes); |
| |
| /* mark platform as probed and add to card platform list */ |
| platform->probed = 1; |
| list_add(&platform->card_list, &card->platform_dev_list); |
| list_add(&platform->dapm.list, &card->dapm_list); |
| |
| return 0; |
| |
| err_probe: |
| soc_cleanup_platform_debugfs(platform); |
| module_put(platform->dev->driver->owner); |
| |
| return ret; |
| } |
| |
| static void rtd_release(struct device *dev) |
| { |
| kfree(dev); |
| } |
| |
| static int soc_post_component_init(struct snd_soc_card *card, |
| struct snd_soc_codec *codec, |
| int num, int dailess) |
| { |
| struct snd_soc_dai_link *dai_link = NULL; |
| struct snd_soc_aux_dev *aux_dev = NULL; |
| struct snd_soc_pcm_runtime *rtd; |
| const char *name; |
| int ret = 0; |
| |
| if (!dailess) { |
| dai_link = &card->dai_link[num]; |
| rtd = &card->rtd[num]; |
| name = dai_link->name; |
| } else { |
| aux_dev = &card->aux_dev[num]; |
| rtd = &card->rtd_aux[num]; |
| name = aux_dev->name; |
| } |
| rtd->card = card; |
| |
| /* do machine specific initialization */ |
| if (!dailess && dai_link->init) |
| ret = dai_link->init(rtd); |
| else if (dailess && aux_dev->init) |
| ret = aux_dev->init(&codec->dapm); |
| if (ret < 0) { |
| dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret); |
| return ret; |
| } |
| |
| /* register the rtd device */ |
| rtd->codec = codec; |
| |
| rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL); |
| if (!rtd->dev) |
| return -ENOMEM; |
| device_initialize(rtd->dev); |
| rtd->dev->parent = card->dev; |
| rtd->dev->release = rtd_release; |
| rtd->dev->init_name = name; |
| dev_set_drvdata(rtd->dev, rtd); |
| mutex_init(&rtd->pcm_mutex); |
| INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients); |
| INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients); |
| INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients); |
| INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients); |
| ret = device_add(rtd->dev); |
| if (ret < 0) { |
| /* calling put_device() here to free the rtd->dev */ |
| put_device(rtd->dev); |
| dev_err(card->dev, |
| "ASoC: failed to register runtime device: %d\n", ret); |
| return ret; |
| } |
| rtd->dev_registered = 1; |
| |
| /* add DAPM sysfs entries for this codec */ |
| ret = snd_soc_dapm_sys_add(rtd->dev); |
| if (ret < 0) |
| dev_err(codec->dev, |
| "ASoC: failed to add codec dapm sysfs entries: %d\n", ret); |
| |
| /* add codec sysfs entries */ |
| ret = device_create_file(rtd->dev, &dev_attr_codec_reg); |
| if (ret < 0) |
| dev_err(codec->dev, |
| "ASoC: failed to add codec sysfs files: %d\n", ret); |
| |
| #ifdef CONFIG_DEBUG_FS |
| /* add DPCM sysfs entries */ |
| if (!dailess && !dai_link->dynamic) |
| goto out; |
| |
| ret = soc_dpcm_debugfs_add(rtd); |
| if (ret < 0) |
| dev_err(rtd->dev, "ASoC: failed to add dpcm sysfs entries: %d\n", ret); |
| |
| out: |
| #endif |
| return 0; |
| } |
| |
| static int soc_probe_link_components(struct snd_soc_card *card, int num, |
| int order) |
| { |
| struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| struct snd_soc_platform *platform = rtd->platform; |
| int ret; |
| |
| /* probe the CPU-side component, if it is a CODEC */ |
| if (cpu_dai->codec && |
| !cpu_dai->codec->probed && |
| cpu_dai->codec->driver->probe_order == order) { |
| ret = soc_probe_codec(card, cpu_dai->codec); |
| if (ret < 0) |
| return ret; |
| } |
| |
| /* probe the CODEC-side component */ |
| if (!codec_dai->codec->probed && |
| codec_dai->codec->driver->probe_order == order) { |
| ret = soc_probe_codec(card, codec_dai->codec); |
| if (ret < 0) |
| return ret; |
| } |
| |
| /* probe the platform */ |
| if (!platform->probed && |
| platform->driver->probe_order == order) { |
| ret = soc_probe_platform(card, platform); |
| if (ret < 0) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int soc_probe_codec_dai(struct snd_soc_card *card, |
| struct snd_soc_dai *codec_dai, |
| int order) |
| { |
| int ret; |
| |
| if (!codec_dai->probed && codec_dai->driver->probe_order == order) { |
| if (codec_dai->driver->probe) { |
| ret = codec_dai->driver->probe(codec_dai); |
| if (ret < 0) { |
| dev_err(codec_dai->dev, |
| "ASoC: failed to probe CODEC DAI %s: %d\n", |
| codec_dai->name, ret); |
| return ret; |
| } |
| } |
| |
| /* mark codec_dai as probed and add to card dai list */ |
| codec_dai->probed = 1; |
| list_add(&codec_dai->card_list, &card->dai_dev_list); |
| } |
| |
| return 0; |
| } |
| |
| static int soc_link_dai_widgets(struct snd_soc_card *card, |
| struct snd_soc_dai_link *dai_link, |
| struct snd_soc_dai *cpu_dai, |
| struct snd_soc_dai *codec_dai) |
| { |
| struct snd_soc_dapm_widget *play_w, *capture_w; |
| int ret; |
| |
| /* link the DAI widgets */ |
| play_w = codec_dai->playback_widget; |
| capture_w = cpu_dai->capture_widget; |
| if (play_w && capture_w) { |
| ret = snd_soc_dapm_new_pcm(card, dai_link->params, |
| capture_w, play_w); |
| if (ret != 0) { |
| dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n", |
| play_w->name, capture_w->name, ret); |
| return ret; |
| } |
| } |
| |
| play_w = cpu_dai->playback_widget; |
| capture_w = codec_dai->capture_widget; |
| if (play_w && capture_w) { |
| ret = snd_soc_dapm_new_pcm(card, dai_link->params, |
| capture_w, play_w); |
| if (ret != 0) { |
| dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n", |
| play_w->name, capture_w->name, ret); |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order) |
| { |
| struct snd_soc_dai_link *dai_link = &card->dai_link[num]; |
| struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| struct snd_soc_codec *codec = rtd->codec; |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| int ret; |
| |
| dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n", |
| card->name, num, order); |
| |
| /* config components */ |
| cpu_dai->platform = platform; |
| codec_dai->card = card; |
| cpu_dai->card = card; |
| |
| /* set default power off timeout */ |
| rtd->pmdown_time = pmdown_time; |
| |
| /* probe the cpu_dai */ |
| if (!cpu_dai->probed && |
| cpu_dai->driver->probe_order == order) { |
| if (!cpu_dai->codec) { |
| cpu_dai->dapm.card = card; |
| if (!try_module_get(cpu_dai->dev->driver->owner)) |
| return -ENODEV; |
| |
| list_add(&cpu_dai->dapm.list, &card->dapm_list); |
| } |
| |
| if (cpu_dai->driver->probe) { |
| ret = cpu_dai->driver->probe(cpu_dai); |
| if (ret < 0) { |
| dev_err(cpu_dai->dev, |
| "ASoC: failed to probe CPU DAI %s: %d\n", |
| cpu_dai->name, ret); |
| module_put(cpu_dai->dev->driver->owner); |
| return ret; |
| } |
| } |
| cpu_dai->probed = 1; |
| /* mark cpu_dai as probed and add to card dai list */ |
| list_add(&cpu_dai->card_list, &card->dai_dev_list); |
| } |
| |
| /* probe the CODEC DAI */ |
| ret = soc_probe_codec_dai(card, codec_dai, order); |
| if (ret) |
| return ret; |
| |
| /* complete DAI probe during last probe */ |
| if (order != SND_SOC_COMP_ORDER_LAST) |
| return 0; |
| |
| ret = soc_post_component_init(card, codec, num, 0); |
| if (ret) |
| return ret; |
| |
| ret = device_create_file(rtd->dev, &dev_attr_pmdown_time); |
| if (ret < 0) |
| dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n", |
| ret); |
| |
| if (cpu_dai->driver->compress_dai) { |
| /*create compress_device"*/ |
| ret = soc_new_compress(rtd, num); |
| if (ret < 0) { |
| dev_err(card->dev, "ASoC: can't create compress %s\n", |
| dai_link->stream_name); |
| return ret; |
| } |
| } else { |
| |
| if (!dai_link->params) { |
| /* create the pcm */ |
| ret = soc_new_pcm(rtd, num); |
| if (ret < 0) { |
| dev_err(card->dev, "ASoC: can't create pcm %s :%d\n", |
| dai_link->stream_name, ret); |
| return ret; |
| } |
| } else { |
| INIT_DELAYED_WORK(&rtd->delayed_work, |
| codec2codec_close_delayed_work); |
| |
| /* link the DAI widgets */ |
| ret = soc_link_dai_widgets(card, dai_link, |
| cpu_dai, codec_dai); |
| if (ret) |
| return ret; |
| } |
| } |
| |
| /* add platform data for AC97 devices */ |
| if (rtd->codec_dai->driver->ac97_control) |
| snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata); |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_SND_SOC_AC97_BUS |
| static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd) |
| { |
| int ret; |
| |
| /* Only instantiate AC97 if not already done by the adaptor |
| * for the generic AC97 subsystem. |
| */ |
| if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) { |
| /* |
| * It is possible that the AC97 device is already registered to |
| * the device subsystem. This happens when the device is created |
| * via snd_ac97_mixer(). Currently only SoC codec that does so |
| * is the generic AC97 glue but others migh emerge. |
| * |
| * In those cases we don't try to register the device again. |
| */ |
| if (!rtd->codec->ac97_created) |
| return 0; |
| |
| ret = soc_ac97_dev_register(rtd->codec); |
| if (ret < 0) { |
| dev_err(rtd->codec->dev, |
| "ASoC: AC97 device register failed: %d\n", ret); |
| return ret; |
| } |
| |
| rtd->codec->ac97_registered = 1; |
| } |
| return 0; |
| } |
| |
| static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec) |
| { |
| if (codec->ac97_registered) { |
| soc_ac97_dev_unregister(codec); |
| codec->ac97_registered = 0; |
| } |
| } |
| #endif |
| |
| static int soc_check_aux_dev(struct snd_soc_card *card, int num) |
| { |
| struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num]; |
| struct snd_soc_codec *codec; |
| |
| /* find CODEC from registered CODECs*/ |
| list_for_each_entry(codec, &codec_list, list) { |
| if (!strcmp(codec->name, aux_dev->codec_name)) |
| return 0; |
| } |
| |
| dev_err(card->dev, "ASoC: %s not registered\n", aux_dev->codec_name); |
| |
| return -EPROBE_DEFER; |
| } |
| |
| static int soc_probe_aux_dev(struct snd_soc_card *card, int num) |
| { |
| struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num]; |
| struct snd_soc_codec *codec; |
| int ret = -ENODEV; |
| |
| /* find CODEC from registered CODECs*/ |
| list_for_each_entry(codec, &codec_list, list) { |
| if (!strcmp(codec->name, aux_dev->codec_name)) { |
| if (codec->probed) { |
| dev_err(codec->dev, |
| "ASoC: codec already probed"); |
| ret = -EBUSY; |
| goto out; |
| } |
| goto found; |
| } |
| } |
| /* codec not found */ |
| dev_err(card->dev, "ASoC: codec %s not found", aux_dev->codec_name); |
| return -EPROBE_DEFER; |
| |
| found: |
| ret = soc_probe_codec(card, codec); |
| if (ret < 0) |
| return ret; |
| |
| ret = soc_post_component_init(card, codec, num, 1); |
| |
| out: |
| return ret; |
| } |
| |
| static void soc_remove_aux_dev(struct snd_soc_card *card, int num) |
| { |
| struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num]; |
| struct snd_soc_codec *codec = rtd->codec; |
| |
| /* unregister the rtd device */ |
| if (rtd->dev_registered) { |
| device_remove_file(rtd->dev, &dev_attr_codec_reg); |
| device_unregister(rtd->dev); |
| rtd->dev_registered = 0; |
| } |
| |
| if (codec && codec->probed) |
| soc_remove_codec(codec); |
| } |
| |
| static int snd_soc_init_codec_cache(struct snd_soc_codec *codec) |
| { |
| 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; |
| } |
| |
| static int snd_soc_instantiate_card(struct snd_soc_card *card) |
| { |
| struct snd_soc_codec *codec; |
| struct snd_soc_dai_link *dai_link; |
| int ret, i, order, dai_fmt; |
| |
| mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT); |
| |
| /* bind DAIs */ |
| for (i = 0; i < card->num_links; i++) { |
| ret = soc_bind_dai_link(card, i); |
| if (ret != 0) |
| goto base_error; |
| } |
| |
| /* check aux_devs too */ |
| for (i = 0; i < card->num_aux_devs; i++) { |
| ret = soc_check_aux_dev(card, i); |
| if (ret != 0) |
| goto base_error; |
| } |
| |
| /* initialize the register cache for each available codec */ |
| list_for_each_entry(codec, &codec_list, list) { |
| if (codec->cache_init) |
| continue; |
| 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; |
| } |
| |
| card->dapm.bias_level = SND_SOC_BIAS_OFF; |
| card->dapm.dev = card->dev; |
| card->dapm.card = card; |
| list_add(&card->dapm.list, &card->dapm_list); |
| |
| #ifdef CONFIG_DEBUG_FS |
| snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root); |
| #endif |
| |
| #ifdef CONFIG_PM_SLEEP |
| /* deferred resume work */ |
| INIT_WORK(&card->deferred_resume_work, soc_resume_deferred); |
| #endif |
| |
| if (card->dapm_widgets) |
| snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets, |
| card->num_dapm_widgets); |
| |
| /* initialise the sound card only once */ |
| if (card->probe) { |
| ret = card->probe(card); |
| if (ret < 0) |
| goto card_probe_error; |
| } |
| |
| /* probe all components used by DAI links on this card */ |
| for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| order++) { |
| for (i = 0; i < card->num_links; i++) { |
| ret = soc_probe_link_components(card, i, order); |
| if (ret < 0) { |
| dev_err(card->dev, |
| "ASoC: failed to instantiate card %d\n", |
| ret); |
| goto probe_dai_err; |
| } |
| } |
| } |
| |
| /* probe all DAI links on this card */ |
| for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| order++) { |
| for (i = 0; i < card->num_links; i++) { |
| ret = soc_probe_link_dais(card, i, order); |
| if (ret < 0) { |
| dev_err(card->dev, |
| "ASoC: failed to instantiate card %d\n", |
| ret); |
| goto probe_dai_err; |
| } |
| } |
| } |
| |
| for (i = 0; i < card->num_aux_devs; i++) { |
| ret = soc_probe_aux_dev(card, i); |
| if (ret < 0) { |
| dev_err(card->dev, |
| "ASoC: failed to add auxiliary devices %d\n", |
| ret); |
| goto probe_aux_dev_err; |
| } |
| } |
| |
| snd_soc_dapm_link_dai_widgets(card); |
| 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); |
| |
| for (i = 0; i < card->num_links; i++) { |
| dai_link = &card->dai_link[i]; |
| dai_fmt = dai_link->dai_fmt; |
| |
| if (dai_fmt) { |
| ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai, |
| dai_fmt); |
| if (ret != 0 && ret != -ENOTSUPP) |
| dev_warn(card->rtd[i].codec_dai->dev, |
| "ASoC: Failed to set DAI format: %d\n", |
| ret); |
| } |
| |
| /* If this is a regular CPU link there will be a platform */ |
| if (dai_fmt && |
| (dai_link->platform_name || dai_link->platform_of_node)) { |
| ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai, |
| dai_fmt); |
| if (ret != 0 && ret != -ENOTSUPP) |
| dev_warn(card->rtd[i].cpu_dai->dev, |
| "ASoC: Failed to set DAI format: %d\n", |
| ret); |
| } else if (dai_fmt) { |
| /* Flip the polarity for the "CPU" end */ |
| dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK; |
| switch (dai_link->dai_fmt & |
| SND_SOC_DAIFMT_MASTER_MASK) { |
| case SND_SOC_DAIFMT_CBM_CFM: |
| dai_fmt |= SND_SOC_DAIFMT_CBS_CFS; |
| break; |
| case SND_SOC_DAIFMT_CBM_CFS: |
| dai_fmt |= SND_SOC_DAIFMT_CBS_CFM; |
| break; |
| case SND_SOC_DAIFMT_CBS_CFM: |
| dai_fmt |= SND_SOC_DAIFMT_CBM_CFS; |
| break; |
| case SND_SOC_DAIFMT_CBS_CFS: |
| dai_fmt |= SND_SOC_DAIFMT_CBM_CFM; |
| break; |
| } |
| |
| ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai, |
| dai_fmt); |
| if (ret != 0 && ret != -ENOTSUPP) |
| dev_warn(card->rtd[i].cpu_dai->dev, |
| "ASoC: Failed to set DAI format: %d\n", |
| ret); |
| } |
| } |
| |
| snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname), |
| "%s", card->name); |
| snprintf(card->snd_card->longname, sizeof(card->snd_card->longname), |
| "%s", card->long_name ? card->long_name : card->name); |
| snprintf(card->snd_card->driver, sizeof(card->snd_card->driver), |
| "%s", card->driver_name ? card->driver_name : card->name); |
| for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) { |
| switch (card->snd_card->driver[i]) { |
| case '_': |
| case '-': |
| case '\0': |
| break; |
| default: |
| if (!isalnum(card->snd_card->driver[i])) |
| card->snd_card->driver[i] = '_'; |
| break; |
| } |
| } |
| |
| if (card->late_probe) { |
| ret = card->late_probe(card); |
| if (ret < 0) { |
| dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n", |
| card->name, ret); |
| goto probe_aux_dev_err; |
| } |
| } |
| |
| if (card->fully_routed) |
| list_for_each_entry(codec, &card->codec_dev_list, card_list) |
| snd_soc_dapm_auto_nc_codec_pins(codec); |
| |
| 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; |
| } |
| |
| #ifdef CONFIG_SND_SOC_AC97_BUS |
| /* register any AC97 codecs */ |
| for (i = 0; i < card->num_rtd; i++) { |
| ret = soc_register_ac97_dai_link(&card->rtd[i]); |
| if (ret < 0) { |
| dev_err(card->dev, |
| "ASoC: failed to register AC97: %d\n", ret); |
| while (--i >= 0) |
| soc_unregister_ac97_dai_link(card->rtd[i].codec); |
| goto probe_aux_dev_err; |
| } |
| } |
| #endif |
| |
| card->instantiated = 1; |
| snd_soc_dapm_sync(&card->dapm); |
| mutex_unlock(&card->mutex); |
| |
| return 0; |
| |
| probe_aux_dev_err: |
| for (i = 0; i < card->num_aux_devs; i++) |
| soc_remove_aux_dev(card, i); |
| |
| probe_dai_err: |
| soc_remove_dai_links(card); |
| |
| card_probe_error: |
| if (card->remove) |
| card->remove(card); |
| |
| snd_card_free(card->snd_card); |
| |
| base_error: |
| mutex_unlock(&card->mutex); |
| |
| return ret; |
| } |
| |
| /* probes a new socdev */ |
| static int soc_probe(struct platform_device *pdev) |
| { |
| struct snd_soc_card *card = platform_get_drvdata(pdev); |
| |
| /* |
| * no card, so machine driver should be registering card |
| * we should not be here in that case so ret error |
| */ |
| if (!card) |
| return -EINVAL; |
| |
| dev_warn(&pdev->dev, |
| "ASoC: machine %s should use snd_soc_register_card()\n", |
| card->name); |
| |
| /* Bodge while we unpick instantiation */ |
| card->dev = &pdev->dev; |
| |
| return snd_soc_register_card(card); |
| } |
| |
| static int soc_cleanup_card_resources(struct snd_soc_card *card) |
| { |
| int i; |
| |
| /* make sure any delayed work runs */ |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; |
| flush_delayed_work(&rtd->delayed_work); |
| } |
| |
| /* remove auxiliary devices */ |
| for (i = 0; i < card->num_aux_devs; i++) |
| soc_remove_aux_dev(card, i); |
| |
| /* remove and free each DAI */ |
| soc_remove_dai_links(card); |
| |
| soc_cleanup_card_debugfs(card); |
| |
| /* remove the card */ |
| if (card->remove) |
| card->remove(card); |
| |
| snd_soc_dapm_free(&card->dapm); |
| |
| snd_card_free(card->snd_card); |
| return 0; |
| |
| } |
| |
| /* removes a socdev */ |
| static int soc_remove(struct platform_device *pdev) |
| { |
| struct snd_soc_card *card = platform_get_drvdata(pdev); |
| |
| snd_soc_unregister_card(card); |
| return 0; |
| } |
| |
| int snd_soc_poweroff(struct device *dev) |
| { |
| struct snd_soc_card *card = dev_get_drvdata(dev); |
| int i; |
| |
| if (!card->instantiated) |
| return 0; |
| |
| /* Flush out pmdown_time work - we actually do want to run it |
| * now, we're shutting down so no imminent restart. */ |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; |
| flush_delayed_work(&rtd->delayed_work); |
| } |
| |
| snd_soc_dapm_shutdown(card); |
| |
| /* deactivate pins to sleep state */ |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai; |
| pinctrl_pm_select_sleep_state(codec_dai->dev); |
| pinctrl_pm_select_sleep_state(cpu_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", |
| .owner = THIS_MODULE, |
| .pm = &snd_soc_pm_ops, |
| }, |
| .probe = soc_probe, |
| .remove = soc_remove, |
| }; |
| |
| /** |
| * snd_soc_codec_volatile_register: Report if a register is volatile. |
| * |
| * @codec: CODEC to query. |
| * @reg: Register to query. |
| * |
| * Boolean function indiciating if a CODEC register is volatile. |
| */ |
| int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, |
| unsigned int reg) |
| { |
| if (codec->volatile_register) |
| return codec->volatile_register(codec, reg); |
| else |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register); |
| |
| /** |
| * snd_soc_codec_readable_register: Report if a register is readable. |
| * |
| * @codec: CODEC to query. |
| * @reg: Register to query. |
| * |
| * Boolean function indicating if a CODEC register is readable. |
| */ |
| int snd_soc_codec_readable_register(struct snd_soc_codec *codec, |
| unsigned int reg) |
| { |
| if (codec->readable_register) |
| return codec->readable_register(codec, reg); |
| else |
| return 1; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register); |
| |
| /** |
| * snd_soc_codec_writable_register: Report if a register is writable. |
| * |
| * @codec: CODEC to query. |
| * @reg: Register to query. |
| * |
| * Boolean function indicating if a CODEC register is writable. |
| */ |
| int snd_soc_codec_writable_register(struct snd_soc_codec *codec, |
| unsigned int reg) |
| { |
| if (codec->writable_register) |
| return codec->writable_register(codec, reg); |
| else |
| return 1; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register); |
| |
| int snd_soc_platform_read(struct snd_soc_platform *platform, |
| unsigned int reg) |
| { |
| unsigned int ret; |
| |
| if (!platform->driver->read) { |
| dev_err(platform->dev, "ASoC: platform has no read back\n"); |
| return -1; |
| } |
| |
| ret = platform->driver->read(platform, reg); |
| dev_dbg(platform->dev, "read %x => %x\n", reg, ret); |
| trace_snd_soc_preg_read(platform, reg, ret); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_platform_read); |
| |
| int snd_soc_platform_write(struct snd_soc_platform *platform, |
| unsigned int reg, unsigned int val) |
| { |
| if (!platform->driver->write) { |
| dev_err(platform->dev, "ASoC: platform has no write back\n"); |
| return -1; |
| } |
| |
| dev_dbg(platform->dev, "write %x = %x\n", reg, val); |
| trace_snd_soc_preg_write(platform, reg, val); |
| return platform->driver->write(platform, reg, val); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_platform_write); |
| |
| /** |
| * snd_soc_new_ac97_codec - initailise AC97 device |
| * @codec: audio codec |
| * @ops: AC97 bus operations |
| * @num: AC97 codec number |
| * |
| * Initialises AC97 codec resources for use by ad-hoc devices only. |
| */ |
| int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, |
| struct snd_ac97_bus_ops *ops, int num) |
| { |
| mutex_lock(&codec->mutex); |
| |
| codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); |
| if (codec->ac97 == NULL) { |
| mutex_unlock(&codec->mutex); |
| return -ENOMEM; |
| } |
| |
| codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); |
| if (codec->ac97->bus == NULL) { |
| kfree(codec->ac97); |
| codec->ac97 = NULL; |
| mutex_unlock(&codec->mutex); |
| return -ENOMEM; |
| } |
| |
| codec->ac97->bus->ops = ops; |
| codec->ac97->num = num; |
| |
| /* |
| * Mark the AC97 device to be created by us. This way we ensure that the |
| * device will be registered with the device subsystem later on. |
| */ |
| codec->ac97_created = 1; |
| |
| mutex_unlock(&codec->mutex); |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); |
| |
| static struct snd_ac97_reset_cfg snd_ac97_rst_cfg; |
| |
| static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97) |
| { |
| struct pinctrl *pctl = snd_ac97_rst_cfg.pctl; |
| |
| pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_warm_reset); |
| |
| gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 1); |
| |
| udelay(10); |
| |
| gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0); |
| |
| pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run); |
| msleep(2); |
| } |
| |
| static void snd_soc_ac97_reset(struct snd_ac97 *ac97) |
| { |
| struct pinctrl *pctl = snd_ac97_rst_cfg.pctl; |
| |
| pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_reset); |
| |
| gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0); |
| gpio_direction_output(snd_ac97_rst_cfg.gpio_sdata, 0); |
| gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 0); |
| |
| udelay(10); |
| |
| gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 1); |
| |
| pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run); |
| msleep(2); |
| } |
| |
| static int snd_soc_ac97_parse_pinctl(struct device *dev, |
| struct snd_ac97_reset_cfg *cfg) |
| { |
| struct pinctrl *p; |
| struct pinctrl_state *state; |
| int gpio; |
| int ret; |
| |
| p = devm_pinctrl_get(dev); |
| if (IS_ERR(p)) { |
| dev_err(dev, "Failed to get pinctrl\n"); |
| return PTR_RET(p); |
| } |
| cfg->pctl = p; |
| |
| state = pinctrl_lookup_state(p, "ac97-reset"); |
| if (IS_ERR(state)) { |
| dev_err(dev, "Can't find pinctrl state ac97-reset\n"); |
| return PTR_RET(state); |
| } |
| cfg->pstate_reset = state; |
| |
| state = pinctrl_lookup_state(p, "ac97-warm-reset"); |
| if (IS_ERR(state)) { |
| dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n"); |
| return PTR_RET(state); |
| } |
| cfg->pstate_warm_reset = state; |
| |
| state = pinctrl_lookup_state(p, "ac97-running"); |
| if (IS_ERR(state)) { |
| dev_err(dev, "Can't find pinctrl state ac97-running\n"); |
| return PTR_RET(state); |
| } |
| cfg->pstate_run = state; |
| |
| gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0); |
| if (gpio < 0) { |
| dev_err(dev, "Can't find ac97-sync gpio\n"); |
| return gpio; |
| } |
| ret = devm_gpio_request(dev, gpio, "AC97 link sync"); |
| if (ret) { |
| dev_err(dev, "Failed requesting ac97-sync gpio\n"); |
| return ret; |
| } |
| cfg->gpio_sync = gpio; |
| |
| gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1); |
| if (gpio < 0) { |
| dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio); |
| return gpio; |
| } |
| ret = devm_gpio_request(dev, gpio, "AC97 link sdata"); |
| if (ret) { |
| dev_err(dev, "Failed requesting ac97-sdata gpio\n"); |
| return ret; |
| } |
| cfg->gpio_sdata = gpio; |
| |
| gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2); |
| if (gpio < 0) { |
| dev_err(dev, "Can't find ac97-reset gpio\n"); |
| return gpio; |
| } |
| ret = devm_gpio_request(dev, gpio, "AC97 link reset"); |
| if (ret) { |
| dev_err(dev, "Failed requesting ac97-reset gpio\n"); |
| return ret; |
| } |
| cfg->gpio_reset = gpio; |
| |
| return 0; |
| } |
| |
| struct snd_ac97_bus_ops *soc_ac97_ops; |
| EXPORT_SYMBOL_GPL(soc_ac97_ops); |
| |
| int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops) |
| { |
| if (ops == soc_ac97_ops) |
| return 0; |
| |
| if (soc_ac97_ops && ops) |
| return -EBUSY; |
| |
| soc_ac97_ops = ops; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops); |
| |
| /** |
| * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions |
| * |
| * This function sets the reset and warm_reset properties of ops and parses |
| * the device node of pdev to get pinctrl states and gpio numbers to use. |
| */ |
| int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops, |
| struct platform_device *pdev) |
| { |
| struct device *dev = &pdev->dev; |
| struct snd_ac97_reset_cfg cfg; |
| int ret; |
| |
| ret = snd_soc_ac97_parse_pinctl(dev, &cfg); |
| if (ret) |
| return ret; |
| |
| ret = snd_soc_set_ac97_ops(ops); |
| if (ret) |
| return ret; |
| |
| ops->warm_reset = snd_soc_ac97_warm_reset; |
| ops->reset = snd_soc_ac97_reset; |
| |
| snd_ac97_rst_cfg = cfg; |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset); |
| |
| /** |
| * snd_soc_free_ac97_codec - free AC97 codec device |
| * @codec: audio codec |
| * |
| * Frees AC97 codec device resources. |
| */ |
| void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) |
| { |
| mutex_lock(&codec->mutex); |
| #ifdef CONFIG_SND_SOC_AC97_BUS |
| soc_unregister_ac97_dai_link(codec); |
| #endif |
| kfree(codec->ac97->bus); |
| kfree(codec->ac97); |
| codec->ac97 = NULL; |
| codec->ac97_created = 0; |
| mutex_unlock(&codec->mutex); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); |
| |
| unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg) |
| { |
| unsigned int ret; |
| |
| ret = codec->read(codec, reg); |
| dev_dbg(codec->dev, "read %x => %x\n", reg, ret); |
| trace_snd_soc_reg_read(codec, reg, ret); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_read); |
| |
| unsigned int snd_soc_write(struct snd_soc_codec *codec, |
| unsigned int reg, unsigned int val) |
| { |
| dev_dbg(codec->dev, "write %x = %x\n", reg, val); |
| trace_snd_soc_reg_write(codec, reg, val); |
| return codec->write(codec, reg, val); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_write); |
| |
| /** |
| * snd_soc_update_bits - update codec register bits |
| * @codec: audio codec |
| * @reg: codec register |
| * @mask: register mask |
| * @value: new value |
| * |
| * Writes new register value. |
| * |
| * Returns 1 for change, 0 for no change, or negative error code. |
| */ |
| int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, |
| unsigned int mask, unsigned int value) |
| { |
| bool change; |
| unsigned int old, new; |
| int ret; |
| |
| if (codec->using_regmap) { |
| ret = regmap_update_bits_check(codec->control_data, reg, |
| mask, value, &change); |
| } else { |
| ret = snd_soc_read(codec, reg); |
| if (ret < 0) |
| return ret; |
| |
| old = ret; |
| new = (old & ~mask) | (value & mask); |
| change = old != new; |
| if (change) |
| ret = snd_soc_write(codec, reg, new); |
| } |
| |
| if (ret < 0) |
| return ret; |
| |
| return change; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_update_bits); |
| |
| /** |
| * snd_soc_update_bits_locked - update codec register bits |
| * @codec: audio codec |
| * @reg: codec register |
| * @mask: register mask |
| * @value: new value |
| * |
| * Writes new register value, and takes the codec mutex. |
| * |
| * Returns 1 for change else 0. |
| */ |
| int snd_soc_update_bits_locked(struct snd_soc_codec *codec, |
| unsigned short reg, unsigned int mask, |
| unsigned int value) |
| { |
| int change; |
| |
| mutex_lock(&codec->mutex); |
| change = snd_soc_update_bits(codec, reg, mask, value); |
| mutex_unlock(&codec->mutex); |
| |
| return change; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked); |
| |
| /** |
| * snd_soc_test_bits - test register for change |
| * @codec: audio codec |
| * @reg: codec register |
| * @mask: register mask |
| * @value: new value |
| * |
| * Tests a register with a new value and checks if the new value is |
| * different from the old value. |
| * |
| * Returns 1 for change else 0. |
| */ |
| int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, |
| unsigned int mask, unsigned int value) |
| { |
| int change; |
| unsigned int old, new; |
| |
| old = snd_soc_read(codec, reg); |
| new = (old & ~mask) | value; |
| change = old != new; |
| |
| return change; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_test_bits); |
| |
| /** |
| * snd_soc_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_codec_controls - add an array of controls to a codec. |
| * Convenience function to add a list of controls. Many codecs were |
| * duplicating this code. |
| * |
| * @codec: codec to add controls to |
| * @controls: array of controls to add |
| * @num_controls: number of elements in the array |
| * |
| * Return 0 for success, else error. |
| */ |
| int snd_soc_add_codec_controls(struct snd_soc_codec *codec, |
| const struct snd_kcontrol_new *controls, int num_controls) |
| { |
| struct snd_card *card = codec->card->snd_card; |
| |
| return snd_soc_add_controls(card, codec->dev, controls, num_controls, |
| codec->name_prefix, codec); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls); |
| |
| /** |
| * snd_soc_add_platform_controls - add an array of controls to a platform. |
| * Convenience function to add a list of controls. |
| * |
| * @platform: platform to add controls to |
| * @controls: array of controls to add |
| * @num_controls: number of elements in the array |
| * |
| * Return 0 for success, else error. |
| */ |
| int snd_soc_add_platform_controls(struct snd_soc_platform *platform, |
| const struct snd_kcontrol_new *controls, int num_controls) |
| { |
| struct snd_card *card = platform->card->snd_card; |
| |
| return snd_soc_add_controls(card, platform->dev, controls, num_controls, |
| NULL, platform); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls); |
| |
| /** |
| * snd_soc_add_card_controls - add an array of controls to a SoC card. |
| * Convenience function to add a list of controls. |
| * |
| * @soc_card: SoC card to add controls to |
| * @controls: array of controls to add |
| * @num_controls: number of elements in the array |
| * |
| * Return 0 for success, else error. |
| */ |
| int snd_soc_add_card_controls(struct snd_soc_card *soc_card, |
| const struct snd_kcontrol_new *controls, int num_controls) |
| { |
| struct snd_card *card = soc_card->snd_card; |
| |
| return snd_soc_add_controls(card, soc_card->dev, controls, num_controls, |
| NULL, soc_card); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_add_card_controls); |
| |
| /** |
| * snd_soc_add_dai_controls - add an array of controls to a DAI. |
| * Convienience function to add a list of controls. |
| * |
| * @dai: DAI to add controls to |
| * @controls: array of controls to add |
| * @num_controls: number of elements in the array |
| * |
| * Return 0 for success, else error. |
| */ |
| int snd_soc_add_dai_controls(struct snd_soc_dai *dai, |
| const struct snd_kcontrol_new *controls, int num_controls) |
| { |
| struct snd_card *card = dai->card->snd_card; |
| |
| return snd_soc_add_controls(card, dai->dev, controls, num_controls, |
| NULL, dai); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls); |
| |
| /** |
| * snd_soc_info_enum_double - enumerated double mixer info callback |
| * @kcontrol: mixer control |
| * @uinfo: control element information |
| * |
| * Callback to provide information about a double enumerated |
| * mixer control. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; |
| uinfo->count = e->shift_l == e->shift_r ? 1 : 2; |
| uinfo->value.enumerated.items = e->items; |
| |
| if (uinfo->value.enumerated.item >= e->items) |
| uinfo->value.enumerated.item = e->items - 1; |
| strlcpy(uinfo->value.enumerated.name, |
| e->texts[uinfo->value.enumerated.item], |
| sizeof(uinfo->value.enumerated.name)); |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); |
| |
| /** |
| * snd_soc_get_enum_double - enumerated double mixer get callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to get the value of a double enumerated mixer. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| unsigned int val, item; |
| unsigned int reg_val; |
| |
| reg_val = snd_soc_read(codec, e->reg); |
| val = (reg_val >> e->shift_l) & e->mask; |
| item = snd_soc_enum_val_to_item(e, val); |
| ucontrol->value.enumerated.item[0] = item; |
| if (e->shift_l != e->shift_r) { |
| val = (reg_val >> e->shift_l) & e->mask; |
| item = snd_soc_enum_val_to_item(e, val); |
| ucontrol->value.enumerated.item[1] = item; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); |
| |
| /** |
| * snd_soc_put_enum_double - enumerated double mixer put callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to set the value of a double enumerated mixer. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| unsigned int *item = ucontrol->value.enumerated.item; |
| unsigned int val; |
| unsigned int mask; |
| |
| if (item[0] >= e->items) |
| return -EINVAL; |
| val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l; |
| mask = e->mask << e->shift_l; |
| if (e->shift_l != e->shift_r) { |
| if (item[1] >= e->items) |
| return -EINVAL; |
| val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r; |
| mask |= e->mask << e->shift_r; |
| } |
| |
| return snd_soc_update_bits_locked(codec, e->reg, mask, val); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); |
| |
| /** |
| * snd_soc_read_signed - Read a codec register and interprete as signed value |
| * @codec: codec |
| * @reg: Register to read |
| * @mask: Mask to use after shifting the register value |
| * @shift: Right shift of register value |
| * @sign_bit: Bit that describes if a number is negative or not. |
| * |
| * This functions reads a codec register. The register value is shifted right |
| * by 'shift' bits and masked with the given 'mask'. Afterwards it translates |
| * the given registervalue into a signed integer if sign_bit is non-zero. |
| * |
| * Returns the register value as signed int. |
| */ |
| static int snd_soc_read_signed(struct snd_soc_codec *codec, unsigned int reg, |
| unsigned int mask, unsigned int shift, unsigned int sign_bit) |
| { |
| int ret; |
| unsigned int val; |
| |
| val = (snd_soc_read(codec, reg) >> shift) & mask; |
| |
| if (!sign_bit) |
| return val; |
| |
| /* non-negative number */ |
| if (!(val & BIT(sign_bit))) |
| return val; |
| |
| ret = val; |
| |
| /* |
| * The register most probably does not contain a full-sized int. |
| * Instead we have an arbitrary number of bits in a signed |
| * representation which has to be translated into a full-sized int. |
| * This is done by filling up all bits above the sign-bit. |
| */ |
| ret |= ~((int)(BIT(sign_bit) - 1)); |
| |
| return ret; |
| } |
| |
| /** |
| * snd_soc_info_volsw - single mixer info callback |
| * @kcontrol: mixer control |
| * @uinfo: control element information |
| * |
| * Callback to provide information about a single mixer control, or a double |
| * mixer control that spans 2 registers. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| int platform_max; |
| |
| if (!mc->platform_max) |
| mc->platform_max = mc->max; |
| platform_max = mc->platform_max; |
| |
| if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume")) |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
| else |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| |
| uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; |
| uinfo->value.integer.min = 0; |
| uinfo->value.integer.max = platform_max - mc->min; |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_info_volsw); |
| |
| /** |
| * snd_soc_get_volsw - single mixer get callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to get the value of a single mixer control, or a double mixer |
| * control that spans 2 registers. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| unsigned int reg = mc->reg; |
| unsigned int reg2 = mc->rreg; |
| unsigned int shift = mc->shift; |
| unsigned int rshift = mc->rshift; |
| int max = mc->max; |
| int min = mc->min; |
| int sign_bit = mc->sign_bit; |
| unsigned int mask = (1 << fls(max)) - 1; |
| unsigned int invert = mc->invert; |
| |
| if (sign_bit) |
| mask = BIT(sign_bit + 1) - 1; |
| |
| ucontrol->value.integer.value[0] = snd_soc_read_signed(codec, reg, mask, |
| shift, sign_bit) - min; |
| if (invert) |
| ucontrol->value.integer.value[0] = |
| max - ucontrol->value.integer.value[0]; |
| |
| if (snd_soc_volsw_is_stereo(mc)) { |
| if (reg == reg2) |
| ucontrol->value.integer.value[1] = |
| snd_soc_read_signed(codec, reg, mask, rshift, |
| sign_bit) - min; |
| else |
| ucontrol->value.integer.value[1] = |
| snd_soc_read_signed(codec, reg2, mask, shift, |
| sign_bit) - min; |
| if (invert) |
| ucontrol->value.integer.value[1] = |
| max - ucontrol->value.integer.value[1]; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_volsw); |
| |
| /** |
| * snd_soc_put_volsw - single mixer put callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to set the value of a single mixer control, or a double mixer |
| * control that spans 2 registers. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| unsigned int reg = mc->reg; |
| unsigned int reg2 = mc->rreg; |
| unsigned int shift = mc->shift; |
| unsigned int rshift = mc->rshift; |
| int max = mc->max; |
| int min = mc->min; |
| unsigned int sign_bit = mc->sign_bit; |
| unsigned int mask = (1 << fls(max)) - 1; |
| unsigned int invert = mc->invert; |
| int err; |
| bool type_2r = false; |
| unsigned int val2 = 0; |
| unsigned int val, val_mask; |
| |
| if (sign_bit) |
| mask = BIT(sign_bit + 1) - 1; |
| |
| val = ((ucontrol->value.integer.value[0] + min) & mask); |
| if (invert) |
| val = max - val; |
| val_mask = mask << shift; |
| val = val << shift; |
| if (snd_soc_volsw_is_stereo(mc)) { |
| val2 = ((ucontrol->value.integer.value[1] + min) & mask); |
| if (invert) |
| val2 = max - val2; |
| if (reg == reg2) { |
| val_mask |= mask << rshift; |
| val |= val2 << rshift; |
| } else { |
| val2 = val2 << shift; |
| type_2r = true; |
| } |
| } |
| err = snd_soc_update_bits_locked(codec, reg, val_mask, val); |
| if (err < 0) |
| return err; |
| |
| if (type_2r) |
| err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2); |
| |
| return err; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_put_volsw); |
| |
| /** |
| * snd_soc_get_volsw_sx - single mixer get callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to get the value of a single mixer control, or a double mixer |
| * control that spans 2 registers. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| |
| unsigned int reg = mc->reg; |
| unsigned int reg2 = mc->rreg; |
| unsigned int shift = mc->shift; |
| unsigned int rshift = mc->rshift; |
| int max = mc->max; |
| int min = mc->min; |
| int mask = (1 << (fls(min + max) - 1)) - 1; |
| |
| ucontrol->value.integer.value[0] = |
| ((snd_soc_read(codec, reg) >> shift) - min) & mask; |
| |
| if (snd_soc_volsw_is_stereo(mc)) |
| ucontrol->value.integer.value[1] = |
| ((snd_soc_read(codec, reg2) >> rshift) - min) & mask; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx); |
| |
| /** |
| * snd_soc_put_volsw_sx - double mixer set callback |
| * @kcontrol: mixer control |
| * @uinfo: control element information |
| * |
| * Callback to set the value of a double mixer control that spans 2 registers. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| |
| unsigned int reg = mc->reg; |
| unsigned int reg2 = mc->rreg; |
| unsigned int shift = mc->shift; |
| unsigned int rshift = mc->rshift; |
| int max = mc->max; |
| int min = mc->min; |
| int mask = (1 << (fls(min + max) - 1)) - 1; |
| int err = 0; |
| unsigned short val, val_mask, val2 = 0; |
| |
| val_mask = mask << shift; |
| val = (ucontrol->value.integer.value[0] + min) & mask; |
| val = val << shift; |
| |
| err = snd_soc_update_bits_locked(codec, reg, val_mask, val); |
| if (err < 0) |
| return err; |
| |
| if (snd_soc_volsw_is_stereo(mc)) { |
| val_mask = mask << rshift; |
| val2 = (ucontrol->value.integer.value[1] + min) & mask; |
| val2 = val2 << rshift; |
| |
| if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2)) |
| return err; |
| } |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx); |
| |
| /** |
| * snd_soc_info_volsw_s8 - signed mixer info callback |
| * @kcontrol: mixer control |
| * @uinfo: control element information |
| * |
| * Callback to provide information about a signed mixer control. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| int platform_max; |
| int min = mc->min; |
| |
| if (!mc->platform_max) |
| mc->platform_max = mc->max; |
| platform_max = mc->platform_max; |
| |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| uinfo->count = 2; |
| uinfo->value.integer.min = 0; |
| uinfo->value.integer.max = platform_max - min; |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); |
| |
| /** |
| * snd_soc_get_volsw_s8 - signed mixer get callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to get the value of a signed mixer control. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| unsigned int reg = mc->reg; |
| int min = mc->min; |
| int val = snd_soc_read(codec, reg); |
| |
| ucontrol->value.integer.value[0] = |
| ((signed char)(val & 0xff))-min; |
| ucontrol->value.integer.value[1] = |
| ((signed char)((val >> 8) & 0xff))-min; |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8); |
| |
| /** |
| * snd_soc_put_volsw_sgn - signed mixer put callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to set the value of a signed mixer control. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| unsigned int reg = mc->reg; |
| int min = mc->min; |
| unsigned int val; |
| |
| val = (ucontrol->value.integer.value[0]+min) & 0xff; |
| val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8; |
| |
| return snd_soc_update_bits_locked(codec, reg, 0xffff, val); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8); |
| |
| /** |
| * snd_soc_info_volsw_range - single mixer info callback with range. |
| * @kcontrol: mixer control |
| * @uinfo: control element information |
| * |
| * Callback to provide information, within a range, about a single |
| * mixer control. |
| * |
| * returns 0 for success. |
| */ |
| int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| int platform_max; |
| int min = mc->min; |
| |
| if (!mc->platform_max) |
| mc->platform_max = mc->max; |
| platform_max = mc->platform_max; |
| |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; |
| uinfo->value.integer.min = 0; |
| uinfo->value.integer.max = platform_max - min; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range); |
| |
| /** |
| * snd_soc_put_volsw_range - single mixer put value callback with range. |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to set the value, within a range, for a single mixer control. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| unsigned int reg = mc->reg; |
| unsigned int rreg = mc->rreg; |
| unsigned int shift = mc->shift; |
| int min = mc->min; |
| int max = mc->max; |
| unsigned int mask = (1 << fls(max)) - 1; |
| unsigned int invert = mc->invert; |
| unsigned int val, val_mask; |
| int ret; |
| |
| val = ((ucontrol->value.integer.value[0] + min) & mask); |
| if (invert) |
| val = max - val; |
| val_mask = mask << shift; |
| val = val << shift; |
| |
| ret = snd_soc_update_bits_locked(codec, reg, val_mask, val); |
| if (ret < 0) |
| return ret; |
| |
| if (snd_soc_volsw_is_stereo(mc)) { |
| val = ((ucontrol->value.integer.value[1] + min) & mask); |
| if (invert) |
| val = max - val; |
| val_mask = mask << shift; |
| val = val << shift; |
| |
| ret = snd_soc_update_bits_locked(codec, rreg, val_mask, val); |
| } |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range); |
| |
| /** |
| * snd_soc_get_volsw_range - single mixer get callback with range |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to get the value, within a range, of a single mixer control. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| unsigned int reg = mc->reg; |
| unsigned int rreg = mc->rreg; |
| unsigned int shift = mc->shift; |
| int min = mc->min; |
| int max = mc->max; |
| unsigned int mask = (1 << fls(max)) - 1; |
| unsigned int invert = mc->invert; |
| |
| ucontrol->value.integer.value[0] = |
| (snd_soc_read(codec, reg) >> shift) & mask; |
| if (invert) |
| ucontrol->value.integer.value[0] = |
| max - ucontrol->value.integer.value[0]; |
| ucontrol->value.integer.value[0] = |
| ucontrol->value.integer.value[0] - min; |
| |
| if (snd_soc_volsw_is_stereo(mc)) { |
| ucontrol->value.integer.value[1] = |
| (snd_soc_read(codec, rreg) >> shift) & mask; |
| if (invert) |
| ucontrol->value.integer.value[1] = |
| max - ucontrol->value.integer.value[1]; |
| ucontrol->value.integer.value[1] = |
| ucontrol->value.integer.value[1] - min; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range); |
| |
| /** |
| * snd_soc_limit_volume - Set new limit to an existing volume control. |
| * |
| * @codec: where to look for the control |
| * @name: Name of the control |
| * @max: new maximum limit |
| * |
| * Return 0 for success, else error. |
| */ |
| int snd_soc_limit_volume(struct snd_soc_codec *codec, |
| const char *name, int max) |
| { |
| struct snd_card *card = codec->card->snd_card; |
| struct snd_kcontrol *kctl; |
| struct soc_mixer_control *mc; |
| int found = 0; |
| int ret = -EINVAL; |
| |
| /* Sanity check for name and max */ |
| if (unlikely(!name || max <= 0)) |
| return -EINVAL; |
| |
| list_for_each_entry(kctl, &card->controls, list) { |
| if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) { |
| found = 1; |
| break; |
| } |
| } |
| if (found) { |
| mc = (struct soc_mixer_control *)kctl->private_value; |
| if (max <= mc->max) { |
| mc->platform_max = max; |
| ret = 0; |
| } |
| } |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_limit_volume); |
| |
| int snd_soc_bytes_info(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| struct soc_bytes *params = (void *)kcontrol->private_value; |
| |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; |
| uinfo->count = params->num_regs * codec->val_bytes; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_bytes_info); |
| |
| int snd_soc_bytes_get(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_bytes *params = (void *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| int ret; |
| |
| if (codec->using_regmap) |
| ret = regmap_raw_read(codec->control_data, params->base, |
| ucontrol->value.bytes.data, |
| params->num_regs * codec->val_bytes); |
| else |
| ret = -EINVAL; |
| |
| /* Hide any masked bytes to ensure consistent data reporting */ |
| if (ret == 0 && params->mask) { |
| switch (codec->val_bytes) { |
| case 1: |
| ucontrol->value.bytes.data[0] &= ~params->mask; |
| break; |
| case 2: |
| ((u16 *)(&ucontrol->value.bytes.data))[0] |
| &= cpu_to_be16(~params->mask); |
| break; |
| case 4: |
| ((u32 *)(&ucontrol->value.bytes.data))[0] |
| &= cpu_to_be32(~params->mask); |
| break; |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_bytes_get); |
| |
| int snd_soc_bytes_put(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_bytes *params = (void *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| int ret, len; |
| unsigned int val, mask; |
| void *data; |
| |
| if (!codec->using_regmap) |
| return -EINVAL; |
| |
| len = params->num_regs * codec->val_bytes; |
| |
| data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA); |
| if (!data) |
| return -ENOMEM; |
| |
| /* |
| * If we've got a mask then we need to preserve the register |
| * bits. We shouldn't modify the incoming data so take a |
| * copy. |
| */ |
| if (params->mask) { |
| ret = regmap_read(codec->control_data, params->base, &val); |
| if (ret != 0) |
| goto out; |
| |
| val &= params->mask; |
| |
| switch (codec->val_bytes) { |
| case 1: |
| ((u8 *)data)[0] &= ~params->mask; |
| ((u8 *)data)[0] |= val; |
| break; |
| case 2: |
| mask = ~params->mask; |
| ret = regmap_parse_val(codec->control_data, |
| &mask, &mask); |
| if (ret != 0) |
| goto out; |
| |
| ((u16 *)data)[0] &= mask; |
| |
| ret = regmap_parse_val(codec->control_data, |
| &val, &val); |
| if (ret != 0) |
| goto out; |
| |
| ((u16 *)data)[0] |= val; |
| break; |
| case 4: |
| mask = ~params->mask; |
| ret = regmap_parse_val(codec->control_data, |
| &mask, &mask); |
| if (ret != 0) |
| goto out; |
| |
| ((u32 *)data)[0] &= mask; |
| |
| ret = regmap_parse_val(codec->control_data, |
| &val, &val); |
| if (ret != 0) |
| goto out; |
| |
| ((u32 *)data)[0] |= val; |
| break; |
| default: |
| ret = -EINVAL; |
| goto out; |
| } |
| } |
| |
| ret = regmap_raw_write(codec->control_data, params->base, |
| data, len); |
| |
| out: |
| kfree(data); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_bytes_put); |
| |
| /** |
| * snd_soc_info_xr_sx - signed multi register info callback |
| * @kcontrol: mreg control |
| * @uinfo: control element information |
| * |
| * Callback to provide information of a control that can |
| * span multiple codec registers which together |
| * forms a single signed value in a MSB/LSB manner. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| struct soc_mreg_control *mc = |
| (struct soc_mreg_control *)kcontrol->private_value; |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| uinfo->count = 1; |
| uinfo->value.integer.min = mc->min; |
| uinfo->value.integer.max = mc->max; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx); |
| |
| /** |
| * snd_soc_get_xr_sx - signed multi register get callback |
| * @kcontrol: mreg control |
| * @ucontrol: control element information |
| * |
| * Callback to get the value of a control that can span |
| * multiple codec registers which together forms a single |
| * signed value in a MSB/LSB manner. The control supports |
| * specifying total no of bits used to allow for bitfields |
| * across the multiple codec registers. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mreg_control *mc = |
| (struct soc_mreg_control *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| unsigned int regbase = mc->regbase; |
| unsigned int regcount = mc->regcount; |
| unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE; |
| unsigned int regwmask = (1<<regwshift)-1; |
| unsigned int invert = mc->invert; |
| unsigned long mask = (1UL<<mc->nbits)-1; |
| long min = mc->min; |
| long max = mc->max; |
| long val = 0; |
| unsigned long regval; |
| unsigned int i; |
| |
| for (i = 0; i < regcount; i++) { |
| regval = snd_soc_read(codec, regbase+i) & regwmask; |
| val |= regval << (regwshift*(regcount-i-1)); |
| } |
| val &= mask; |
| if (min < 0 && val > max) |
| val |= ~mask; |
| if (invert) |
| val = max - val; |
| ucontrol->value.integer.value[0] = val; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx); |
| |
| /** |
| * snd_soc_put_xr_sx - signed multi register get callback |
| * @kcontrol: mreg control |
| * @ucontrol: control element information |
| * |
| * Callback to set the value of a control that can span |
| * multiple codec registers which together forms a single |
| * signed value in a MSB/LSB manner. The control supports |
| * specifying total no of bits used to allow for bitfields |
| * across the multiple codec registers. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mreg_control *mc = |
| (struct soc_mreg_control *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| unsigned int regbase = mc->regbase; |
| unsigned int regcount = mc->regcount; |
| unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE; |
| unsigned int regwmask = (1<<regwshift)-1; |
| unsigned int invert = mc->invert; |
| unsigned long mask = (1UL<<mc->nbits)-1; |
| long max = mc->max; |
| long val = ucontrol->value.integer.value[0]; |
| unsigned int i, regval, regmask; |
| int err; |
| |
| if (invert) |
| val = max - val; |
| val &= mask; |
| for (i = 0; i < regcount; i++) { |
| regval = (val >> (regwshift*(regcount-i-1))) & regwmask; |
| regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask; |
| err = snd_soc_update_bits_locked(codec, regbase+i, |
| regmask, regval); |
| if (err < 0) |
| return err; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx); |
| |
| /** |
| * snd_soc_get_strobe - strobe get callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback get the value of a strobe mixer control. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_get_strobe(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| unsigned int reg = mc->reg; |
| unsigned int shift = mc->shift; |
| unsigned int mask = 1 << shift; |
| unsigned int invert = mc->invert != 0; |
| unsigned int val = snd_soc_read(codec, reg) & mask; |
| |
| if (shift != 0 && val != 0) |
| val = val >> shift; |
| ucontrol->value.enumerated.item[0] = val ^ invert; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_strobe); |
| |
| /** |
| * snd_soc_put_strobe - strobe put callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback strobe a register bit to high then low (or the inverse) |
| * in one pass of a single mixer enum control. |
| * |
| * Returns 1 for success. |
| */ |
| int snd_soc_put_strobe(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| unsigned int reg = mc->reg; |
| unsigned int shift = mc->shift; |
| unsigned int mask = 1 << shift; |
| unsigned int invert = mc->invert != 0; |
| unsigned int strobe = ucontrol->value.enumerated.item[0] != 0; |
| unsigned int val1 = (strobe ^ invert) ? mask : 0; |
| unsigned int val2 = (strobe ^ invert) ? 0 : mask; |
| int err; |
| |
| err = snd_soc_update_bits_locked(codec, reg, mask, val1); |
| if (err < 0) |
| return err; |
| |
| err = snd_soc_update_bits_locked(codec, reg, mask, val2); |
| return err; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_put_strobe); |
| |
| /** |
| * snd_soc_dai_set_sysclk - configure DAI system or master clock. |
| * @dai: DAI |
| * @clk_id: DAI specific clock ID |
| * @freq: new clock frequency in Hz |
| * @dir: new clock direction - input/output. |
| * |
| * Configures the DAI master (MCLK) or system (SYSCLK) clocking. |
| */ |
| int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, |
| unsigned int freq, int dir) |
| { |
| if (dai->driver && dai->driver->ops->set_sysclk) |
| return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir); |
| else if (dai->codec && dai->codec->driver->set_sysclk) |
| return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0, |
| freq, dir); |
| else |
| return -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 - configure DAI TDM. |
| * @dai: DAI |
| * @tx_mask: bitmask representing active TX slots. |
| * @rx_mask: bitmask representing active RX slots. |
| * @slots: Number of slots in use. |
| * @slot_width: Width in bits for each slot. |
| * |
| * Configures a DAI for TDM operation. Both mask and slots are codec and DAI |
| * specific. |
| */ |
| int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, |
| unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) |
| { |
| if (dai->driver && dai->driver->ops->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); |
| |
| 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; |
| |
| if (!card->name || !card->dev) |
| return -EINVAL; |
| |
| for (i = 0; i < card->num_links; i++) { |
| struct snd_soc_dai_link *link = &card->dai_link[i]; |
| |
| /* |
| * Codec must be specified by 1 of name or OF node, |
| * not both or neither. |
| */ |
| if (!!link->codec_name == !!link->codec_of_node) { |
| dev_err(card->dev, |
| "ASoC: Neither/both codec name/of_node are set for %s\n", |
| link->name); |
| return -EINVAL; |
| } |
| /* Codec DAI name must be specified */ |
| if (!link->codec_dai_name) { |
| dev_err(card->dev, |
| "ASoC: codec_dai_name not set for %s\n", |
| link->name); |
| return -EINVAL; |
| } |
| |
| /* |
| * Platform may be specified by either name or OF node, but |
| * can be left unspecified, and a dummy platform will be used. |
| */ |
| if (link->platform_name && link->platform_of_node) { |
| dev_err(card->dev, |
| "ASoC: Both platform name/of_node are set for %s\n", |
| link->name); |
| return -EINVAL; |
| } |
| |
| /* |
| * CPU device may be specified by either name or OF node, but |
| * can be left unspecified, and will be matched based on DAI |
| * name alone.. |
| */ |
| if (link->cpu_name && link->cpu_of_node) { |
| dev_err(card->dev, |
| "ASoC: Neither/both cpu name/of_node are set for %s\n", |
| link->name); |
| return -EINVAL; |
| } |
| /* |
| * At least one of CPU DAI name or CPU device name/node must be |
| * specified |
| */ |
| if (!link->cpu_dai_name && |
| !(link->cpu_name || link->cpu_of_node)) { |
| dev_err(card->dev, |
| "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n", |
| link->name); |
| return -EINVAL; |
| } |
| } |
| |
| dev_set_drvdata(card->dev, card); |
| |
| snd_soc_initialize_card_lists(card); |
| |
| soc_init_card_debugfs(card); |
| |
| card->rtd = devm_kzalloc(card->dev, |
| sizeof(struct snd_soc_pcm_runtime) * |
| (card->num_links + card->num_aux_devs), |
| GFP_KERNEL); |
| if (card->rtd == NULL) |
| return -ENOMEM; |
| card->num_rtd = 0; |
| card->rtd_aux = &card->rtd[card->num_links]; |
| |
| for (i = 0; i < card->num_links; i++) |
| card->rtd[i].dai_link = &card->dai_link[i]; |
| |
| INIT_LIST_HEAD(&card->list); |
| INIT_LIST_HEAD(&card->dapm_dirty); |
| card->instantiated = 0; |
| mutex_init(&card->mutex); |
| mutex_init(&card->dapm_mutex); |
| |
| ret = snd_soc_instantiate_card(card); |
| if (ret != 0) |
| soc_cleanup_card_debugfs(card); |
| |
| /* deactivate pins to sleep state */ |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai; |
| if (!codec_dai->active) |
| pinctrl_pm_select_sleep_state(codec_dai->dev); |
| if (!cpu_dai->active) |
| pinctrl_pm_select_sleep_state(cpu_dai->dev); |
| } |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_register_card); |
| |
| /** |
| * snd_soc_unregister_card - Unregister a card with the ASoC core |
| * |
| * @card: Card to unregister |
| * |
| */ |
| int snd_soc_unregister_card(struct snd_soc_card *card) |
| { |
| if (card->instantiated) |
| soc_cleanup_card_resources(card); |
| dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_unregister_card); |
| |
| /* |
| * Simplify DAI link configuration by removing ".-1" from device names |
| * and sanitizing names. |
| */ |
| static char *fmt_single_name(struct device *dev, int *id) |
| { |
| char *found, name[NAME_SIZE]; |
| int id1, id2; |
| |
| if (dev_name(dev) == NULL) |
| return NULL; |
| |
| strlcpy(name, dev_name(dev), NAME_SIZE); |
| |
| /* are we a "%s.%d" name (platform and SPI components) */ |
| found = strstr(name, dev->driver->name); |
| if (found) { |
| /* get ID */ |
| if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) { |
| |
| /* discard ID from name if ID == -1 */ |
| if (*id == -1) |
| found[strlen(dev->driver->name)] = '\0'; |
| } |
| |
| } else { |
| /* I2C component devices are named "bus-addr" */ |
| if (sscanf(name, "%x-%x", &id1, &id2) == 2) { |
| char tmp[NAME_SIZE]; |
| |
| /* create unique ID number from I2C addr and bus */ |
| *id = ((id1 & 0xffff) << 16) + id2; |
| |
| /* sanitize component name for DAI link creation */ |
| snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name); |
| strlcpy(name, tmp, NAME_SIZE); |
| } else |
| *id = 0; |
| } |
| |
| return kstrdup(name, GFP_KERNEL); |
| } |
| |
| /* |
| * Simplify DAI link naming for single devices with multiple DAIs by removing |
| * any ".-1" and using the DAI name (instead of device name). |
| */ |
| static inline char *fmt_multiple_name(struct device *dev, |
| struct snd_soc_dai_driver *dai_drv) |
| { |
| if (dai_drv->name == NULL) { |
| dev_err(dev, |
| "ASoC: error - multiple DAI %s registered with no name\n", |
| dev_name(dev)); |
| return NULL; |
| } |
| |
| return kstrdup(dai_drv->name, GFP_KERNEL); |
| } |
| |
| /** |
| * snd_soc_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); |
| } |
| } |
| |
| /** |
| * snd_soc_register_dais - Register a DAI with the ASoC core |
| * |
| * @component: The component the DAIs are registered for |
| * @codec: The CODEC that the DAIs are registered for, NULL if the component is |
| * not a CODEC. |
| * @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_codec *codec, 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); |
| |
| for (i = 0; i < count; i++) { |
| |
| dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL); |
| if (dai == NULL) { |
| ret = -ENOMEM; |
| goto err; |
| } |
| |
| /* |
| * 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 (count == 1 && legacy_dai_naming) { |
| dai->name = fmt_single_name(dev, &dai->id); |
| } else { |
| dai->name = fmt_multiple_name(dev, &dai_drv[i]); |
| if (dai_drv[i].id) |
| dai->id = dai_drv[i].id; |
| else |
| dai->id = i; |
| } |
| if (dai->name == NULL) { |
| kfree(dai); |
| ret = -ENOMEM; |
| goto err; |
| } |
| |
| dai->component = component; |
| dai->codec = codec; |
| dai->dev = dev; |
| dai->driver = &dai_drv[i]; |
| dai->dapm.dev = dev; |
| if (!dai->driver->ops) |
| dai->driver->ops = &null_dai_ops; |
| |
| if (!dai->codec) |
| dai->dapm.idle_bias_off = 1; |
| |
| list_add(&dai->list, &component->dai_list); |
| |
| dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name); |
| } |
| |
| return 0; |
| |
| err: |
| snd_soc_unregister_dais(component); |
| |
| return ret; |
| } |
| |
| /** |
| * snd_soc_register_component - Register a component with the ASoC core |
| * |
| */ |
| static int |
| __snd_soc_register_component(struct device *dev, |
| struct snd_soc_component *cmpnt, |
| const struct snd_soc_component_driver *cmpnt_drv, |
| struct snd_soc_codec *codec, |
| struct snd_soc_dai_driver *dai_drv, |
| int num_dai, bool allow_single_dai) |
| { |
| int ret; |
| |
| dev_dbg(dev, "component register %s\n", dev_name(dev)); |
| |
| if (!cmpnt) { |
| dev_err(dev, "ASoC: Failed to connecting component\n"); |
| return -ENOMEM; |
| } |
| |
| cmpnt->name = fmt_single_name(dev, &cmpnt->id); |
| if (!cmpnt->name) { |
| dev_err(dev, "ASoC: Failed to simplifying name\n"); |
| return -ENOMEM; |
| } |
| |
| cmpnt->dev = dev; |
| cmpnt->driver = cmpnt_drv; |
| cmpnt->dai_drv = dai_drv; |
| cmpnt->num_dai = num_dai; |
| INIT_LIST_HEAD(&cmpnt->dai_list); |
| |
| ret = snd_soc_register_dais(cmpnt, codec, dai_drv, num_dai, |
| allow_single_dai); |
| if (ret < 0) { |
| dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret); |
| goto error_component_name; |
| } |
| |
| mutex_lock(&client_mutex); |
| list_add(&cmpnt->list, &component_list); |
| mutex_unlock(&client_mutex); |
| |
| dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name); |
| |
| return ret; |
| |
| error_component_name: |
| kfree(cmpnt->name); |
| |
| return ret; |
| } |
| |
| 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; |
| |
| cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL); |
| if (!cmpnt) { |
| dev_err(dev, "ASoC: Failed to allocate memory\n"); |
| return -ENOMEM; |
| } |
| |
| cmpnt->ignore_pmdown_time = true; |
| |
| return __snd_soc_register_component(dev, cmpnt, cmpnt_drv, NULL, |
| dai_drv, num_dai, true); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_register_component); |
| |
| /** |
| * snd_soc_unregister_component - Unregister a component from the ASoC core |
| * |
| */ |
| void snd_soc_unregister_component(struct device *dev) |
| { |
| struct snd_soc_component *cmpnt; |
| |
| list_for_each_entry(cmpnt, &component_list, list) { |
| if (dev == cmpnt->dev) |
| goto found; |
| } |
| return; |
| |
| found: |
| snd_soc_unregister_dais(cmpnt); |
| |
| mutex_lock(&client_mutex); |
| list_del(&cmpnt->list); |
| mutex_unlock(&client_mutex); |
| |
| dev_dbg(dev, "ASoC: Unregistered component '%s'\n", cmpnt->name); |
| kfree(cmpnt->name); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_unregister_component); |
| |
| /** |
| * snd_soc_add_platform - Add a platform to the ASoC core |
| * @dev: The parent device for the platform |
| * @platform: The platform to add |
| * @platform_driver: 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) |
| { |
| /* create platform component name */ |
| platform->name = fmt_single_name(dev, &platform->id); |
| if (platform->name == NULL) |
| return -ENOMEM; |
| |
| platform->dev = dev; |
| platform->driver = platform_drv; |
| platform->dapm.dev = dev; |
| platform->dapm.platform = platform; |
| platform->dapm.stream_event = platform_drv->stream_event; |
| mutex_init(&platform->mutex); |
| |
| mutex_lock(&client_mutex); |
| list_add(&platform->list, &platform_list); |
| mutex_unlock(&client_mutex); |
| |
| dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->name); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_add_platform); |
| |
| /** |
| * snd_soc_register_platform - Register a platform with the ASoC core |
| * |
| * @platform: platform to register |
| */ |
| 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); |
| mutex_unlock(&client_mutex); |
| |
| dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n", |
| platform->name); |
| kfree(platform->name); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_remove_platform); |
| |
| struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev) |
| { |
| struct snd_soc_platform *platform; |
| |
| list_for_each_entry(platform, &platform_list, list) { |
| if (dev == platform->dev) |
| return platform; |
| } |
| |
| return NULL; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_lookup_platform); |
| |
| /** |
| * snd_soc_unregister_platform - Unregister a platform from the ASoC core |
| * |
| * @platform: platform to unregister |
| */ |
| void snd_soc_unregister_platform(struct device *dev) |
| { |
| struct snd_soc_platform *platform; |
| |
| 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]; |
| } |
| |
| /** |
| * snd_soc_register_codec - Register a codec with the ASoC core |
| * |
| * @codec: codec to register |
| */ |
| int snd_soc_register_codec(struct device *dev, |
| const struct snd_soc_codec_driver *codec_drv, |
| struct snd_soc_dai_driver *dai_drv, |
| int num_dai) |
| { |
| struct snd_soc_codec *codec; |
| int ret, i; |
| |
| dev_dbg(dev, "codec register %s\n", dev_name(dev)); |
| |
| codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); |
| if (codec == NULL) |
| return -ENOMEM; |
| |
| /* create CODEC component name */ |
| codec->name = fmt_single_name(dev, &codec->id); |
| if (codec->name == NULL) { |
| ret = -ENOMEM; |
| goto fail_codec; |
| } |
| |
| codec->write = codec_drv->write; |
| codec->read = codec_drv->read; |
| codec->volatile_register = codec_drv->volatile_register; |
| codec->readable_register = codec_drv->readable_register; |
| codec->writable_register = codec_drv->writable_register; |
| codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time; |
| codec->dapm.bias_level = SND_SOC_BIAS_OFF; |
| codec->dapm.dev = dev; |
| codec->dapm.codec = codec; |
| codec->dapm.seq_notifier = codec_drv->seq_notifier; |
| codec->dapm.stream_event = codec_drv->stream_event; |
| codec->dev = dev; |
| codec->driver = codec_drv; |
| codec->num_dai = num_dai; |
| mutex_init(&codec->mutex); |
| |
| for (i = 0; i < num_dai; i++) { |
| fixup_codec_formats(&dai_drv[i].playback); |
| fixup_codec_formats(&dai_drv[i].capture); |
| } |
| |
| mutex_lock(&client_mutex); |
| list_add(&codec->list, &codec_list); |
| mutex_unlock(&client_mutex); |
| |
| /* register component */ |
| ret = __snd_soc_register_component(dev, &codec->component, |
| &codec_drv->component_driver, |
| codec, dai_drv, num_dai, false); |
| if (ret < 0) { |
| dev_err(codec->dev, "ASoC: Failed to regster component: %d\n", ret); |
| goto fail_codec_name; |
| } |
| |
| dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name); |
| return 0; |
| |
| fail_codec_name: |
| mutex_lock(&client_mutex); |
| list_del(&codec->list); |
| mutex_unlock(&client_mutex); |
| |
| kfree(codec->name); |
| fail_codec: |
| kfree(codec); |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_register_codec); |
| |
| /** |
| * snd_soc_unregister_codec - Unregister a codec from the ASoC core |
| * |
| * @codec: codec to unregister |
| */ |
| void snd_soc_unregister_codec(struct device *dev) |
| { |
| struct snd_soc_codec *codec; |
| |
| list_for_each_entry(codec, &codec_list, list) { |
| if (dev == codec->dev) |
| goto found; |
| } |
| return; |
| |
| found: |
| snd_soc_unregister_component(dev); |
| |
| mutex_lock(&client_mutex); |
| list_del(&codec->list); |
| mutex_unlock(&client_mutex); |
| |
| dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name); |
| |
| snd_soc_cache_exit(codec); |
| kfree(codec->name); |
| kfree(codec); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_unregister_codec); |
| |
| /* Retrieve a card's name from device tree */ |
| int snd_soc_of_parse_card_name(struct snd_soc_card *card, |
| const char *propname) |
| { |
| struct device_node *np = card->dev->of_node; |
| int ret; |
| |
| ret = of_property_read_string_index(np, propname, 0, &card->name); |
| /* |
| * EINVAL means the property does not exist. This is fine providing |
| * card->name was previously set, which is checked later in |
| * snd_soc_register_card. |
| */ |
| if (ret < 0 && ret != -EINVAL) { |
| dev_err(card->dev, |
| "ASoC: Property '%s' could not be read: %d\n", |
| propname, ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name); |
| |
| static const struct snd_soc_dapm_widget simple_widgets[] = { |
| SND_SOC_DAPM_MIC("Microphone", NULL), |
| SND_SOC_DAPM_LINE("Line", NULL), |
| SND_SOC_DAPM_HP("Headphone", NULL), |
| SND_SOC_DAPM_SPK("Speaker", NULL), |
| }; |
| |
| int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card, |
| const char *propname) |
| { |
| struct device_node *np = card->dev->of_node; |
| struct snd_soc_dapm_widget *widgets; |
| const char *template, *wname; |
| int i, j, num_widgets, ret; |
| |
| num_widgets = of_property_count_strings(np, propname); |
| if (num_widgets < 0) { |
| dev_err(card->dev, |
| "ASoC: Property '%s' does not exist\n", propname); |
| return -EINVAL; |
| } |
| if (num_widgets & 1) { |
| dev_err(card->dev, |
| "ASoC: Property '%s' length is not even\n", propname); |
| return -EINVAL; |
| } |
| |
| num_widgets /= 2; |
| if (!num_widgets) { |
| dev_err(card->dev, "ASoC: Property '%s's length is zero\n", |
| propname); |
| return -EINVAL; |
| } |
| |
| widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets), |
| GFP_KERNEL); |
| if (!widgets) { |
| dev_err(card->dev, |
| "ASoC: Could not allocate memory for widgets\n"); |
| return -ENOMEM; |
| } |
| |
| for (i = 0; i < num_widgets; i++) { |
| ret = of_property_read_string_index(np, propname, |
| 2 * i, &template); |
| if (ret) { |
| dev_err(card->dev, |
| "ASoC: Property '%s' index %d read error:%d\n", |
| propname, 2 * i, ret); |
| return -EINVAL; |
| } |
| |
| for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) { |
| if (!strncmp(template, simple_widgets[j].name, |
| strlen(simple_widgets[j].name))) { |
| widgets[i] = simple_widgets[j]; |
| break; |
| } |
| } |
| |
| if (j >= ARRAY_SIZE(simple_widgets)) { |
| dev_err(card->dev, |
| "ASoC: DAPM widget '%s' is not supported\n", |
| template); |
| return -EINVAL; |
| } |
| |
| ret = of_property_read_string_index(np, propname, |
| (2 * i) + 1, |
| &wname); |
| if (ret) { |
| dev_err(card->dev, |
| "ASoC: Property '%s' index %d read error:%d\n", |
| propname, (2 * i) + 1, ret); |
| return -EINVAL; |
| } |
| |
| widgets[i].name = wname; |
| } |
| |
| card->dapm_widgets = widgets; |
| card->num_dapm_widgets = num_widgets; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets); |
| |
| int snd_soc_of_parse_tdm_slot(struct device_node *np, |
| unsigned int *slots, |
| unsigned int *slot_width) |
| { |
| u32 val; |
| int ret; |
| |
| 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); |
| |
| int snd_soc_of_parse_audio_routing(struct snd_soc_card *card, |
| const char *propname) |
| { |
| struct device_node *np = card->dev->of_node; |
| int num_routes; |
| struct snd_soc_dapm_route *routes; |
| int i, ret; |
| |
| num_routes = of_property_count_strings(np, propname); |
| if (num_routes < 0 || num_routes & 1) { |
| dev_err(card->dev, |
| "ASoC: Property '%s' does not exist or its length is not even\n", |
| propname); |
| return -EINVAL; |
| } |
| num_routes /= 2; |
| if (!num_routes) { |
| dev_err(card->dev, "ASoC: Property '%s's length is zero\n", |
| propname); |
| return -EINVAL; |
| } |
| |
| routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes), |
| GFP_KERNEL); |
| if (!routes) { |
| dev_err(card->dev, |
| "ASoC: Could not allocate DAPM route table\n"); |
| return -EINVAL; |
| } |
| |
| for (i = 0; i < num_routes; i++) { |
| ret = of_property_read_string_index(np, propname, |
| 2 * i, &routes[i].sink); |
| if (ret) { |
| dev_err(card->dev, |
| "ASoC: Property '%s' index %d could not be read: %d\n", |
| propname, 2 * i, ret); |
| 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_dapm_routes = num_routes; |
| card->dapm_routes = routes; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing); |
| |
| unsigned int snd_soc_of_parse_daifmt(struct device_node *np, |
| const char *prefix) |
| { |
| int ret, i; |
| char prop[128]; |
| unsigned int format = 0; |
| int bit, frame; |
| const char *str; |
| struct { |
| char *name; |
| unsigned int val; |
| } of_fmt_table[] = { |
| { "i2s", SND_SOC_DAIFMT_I2S }, |
| { "right_j", SND_SOC_DAIFMT_RIGHT_J }, |
| { "left_j", SND_SOC_DAIFMT_LEFT_J }, |
| { "dsp_a", SND_SOC_DAIFMT_DSP_A }, |
| { "dsp_b", SND_SOC_DAIFMT_DSP_B }, |
| { "ac97", SND_SOC_DAIFMT_AC97 }, |
| { "pdm", SND_SOC_DAIFMT_PDM}, |
| { "msb", SND_SOC_DAIFMT_MSB }, |
| { "lsb", SND_SOC_DAIFMT_LSB }, |
| }; |
| |
| if (!prefix) |
| prefix = ""; |
| |
| /* |
| * check "[prefix]format = xxx" |
| * SND_SOC_DAIFMT_FORMAT_MASK area |
| */ |
| snprintf(prop, sizeof(prop), "%sformat", prefix); |
| ret = of_property_read_string(np, prop, &str); |
| if (ret == 0) { |
| for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) { |
| if (strcmp(str, of_fmt_table[i].name) == 0) { |
| format |= of_fmt_table[i].val; |
| break; |
| } |
| } |
| } |
| |
| /* |
| * check "[prefix]continuous-clock" |
| * SND_SOC_DAIFMT_CLOCK_MASK area |
| */ |
| snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix); |
| if (of_get_property(np, prop, NULL)) |
| format |= SND_SOC_DAIFMT_CONT; |
| else |
| format |= SND_SOC_DAIFMT_GATED; |
| |
| /* |
| * check "[prefix]bitclock-inversion" |
| * check "[prefix]frame-inversion" |
| * SND_SOC_DAIFMT_INV_MASK area |
| */ |
| snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix); |
| bit = !!of_get_property(np, prop, NULL); |
| |
| snprintf(prop, sizeof(prop), "%sframe-inversion", prefix); |
| frame = !!of_get_property(np, prop, NULL); |
| |
| switch ((bit << 4) + frame) { |
| case 0x11: |
| format |= SND_SOC_DAIFMT_IB_IF; |
| break; |
| case 0x10: |
| format |= SND_SOC_DAIFMT_IB_NF; |
| break; |
| case 0x01: |
| format |= SND_SOC_DAIFMT_NB_IF; |
| break; |
| default: |
| /* SND_SOC_DAIFMT_NB_NF is default */ |
| break; |
| } |
| |
| /* |
| * check "[prefix]bitclock-master" |
| * check "[prefix]frame-master" |
| * SND_SOC_DAIFMT_MASTER_MASK area |
| */ |
| snprintf(prop, sizeof(prop), "%sbitclock-master", prefix); |
| bit = !!of_get_property(np, prop, NULL); |
| |
| snprintf(prop, sizeof(prop), "%sframe-master", prefix); |
| frame = !!of_get_property(np, prop, NULL); |
| |
| switch ((bit << 4) + frame) { |
| case 0x11: |
| format |= SND_SOC_DAIFMT_CBM_CFM; |
| break; |
| case 0x10: |
| format |= SND_SOC_DAIFMT_CBM_CFS; |
| break; |
| case 0x01: |
| format |= SND_SOC_DAIFMT_CBS_CFM; |
| break; |
| default: |
| format |= SND_SOC_DAIFMT_CBS_CFS; |
| break; |
| } |
| |
| return format; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt); |
| |
| int snd_soc_of_get_dai_name(struct device_node *of_node, |
| const char **dai_name) |
| { |
| struct snd_soc_component *pos; |
| 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 = -EPROBE_DEFER; |
| |
| mutex_lock(&client_mutex); |
| list_for_each_entry(pos, &component_list, list) { |
| if (pos->dev->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; |
| break; |
| } |
| |
| ret = 0; |
| |
| *dai_name = pos->dai_drv[id].name; |
| if (!*dai_name) |
| *dai_name = pos->name; |
| } |
| |
| break; |
| } |
| mutex_unlock(&client_mutex); |
| |
| of_node_put(args.np); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name); |
| |
| static int __init snd_soc_init(void) |
| { |
| #ifdef CONFIG_DEBUG_FS |
| snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL); |
| if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) { |
| pr_warn("ASoC: Failed to create debugfs directory\n"); |
| snd_soc_debugfs_root = NULL; |
| } |
| |
| if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL, |
| &codec_list_fops)) |
| pr_warn("ASoC: Failed to create CODEC list debugfs file\n"); |
| |
| if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL, |
| &dai_list_fops)) |
| pr_warn("ASoC: Failed to create DAI list debugfs file\n"); |
| |
| if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL, |
| &platform_list_fops)) |
| pr_warn("ASoC: Failed to create platform list debugfs file\n"); |
| #endif |
| |
| snd_soc_util_init(); |
| |
| return platform_driver_register(&soc_driver); |
| } |
| module_init(snd_soc_init); |
| |
| static void __exit snd_soc_exit(void) |
| { |
| snd_soc_util_exit(); |
| |
| #ifdef CONFIG_DEBUG_FS |
| debugfs_remove_recursive(snd_soc_debugfs_root); |
| #endif |
| platform_driver_unregister(&soc_driver); |
| } |
| module_exit(snd_soc_exit); |
| |
| /* Module information */ |
| MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
| MODULE_DESCRIPTION("ALSA SoC Core"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:soc-audio"); |