#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>
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)
}
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->component.card->dev;
- codec->ac97->dev.release = soc_ac97_device_release;
-
- dev_set_name(&codec->ac97->dev, "%d-%d:%s",
- codec->component.card->snd_card->number, 0,
- codec->component.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
if (card->rtd[i].dai_link->ignore_suspend)
continue;
- if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
+ if (cpu_dai->driver->suspend && !cpu_dai->driver->bus_control)
cpu_dai->driver->suspend(cpu_dai);
}
if (card->rtd[i].dai_link->ignore_suspend)
continue;
- if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
+ if (cpu_dai->driver->suspend && cpu_dai->driver->bus_control)
cpu_dai->driver->suspend(cpu_dai);
/* deactivate pins to sleep state */
if (card->resume_pre)
card->resume_pre(card);
- /* resume AC97 DAIs */
+ /* resume control bus 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)
+ if (cpu_dai->driver->resume && cpu_dai->driver->bus_control)
cpu_dai->driver->resume(cpu_dai);
}
if (card->rtd[i].dai_link->ignore_suspend)
continue;
- if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
+ if (cpu_dai->driver->resume && !cpu_dai->driver->bus_control)
cpu_dai->driver->resume(cpu_dai);
}
int snd_soc_resume(struct device *dev)
{
struct snd_soc_card *card = dev_get_drvdata(dev);
- int i, ac97_control = 0;
+ bool bus_control = false;
+ int i;
/* If the card is not initialized yet there is nothing to do */
if (!card->instantiated)
}
}
- /* 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
+ /*
+ * DAIs that also act as the control bus master might have other drivers
+ * hanging off them so need to resume immediately. Other drivers don't
+ * have that problem and may take a substantial amount of time to resume
* due to I/O costs and anti-pop so handle them out of line.
*/
for (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;
+ bus_control |= cpu_dai->driver->bus_control;
}
- if (ac97_control) {
- dev_dbg(dev, "ASoC: Resuming AC97 immediately\n");
+ if (bus_control) {
+ dev_dbg(dev, "ASoC: Resuming control bus master immediately\n");
soc_resume_deferred(&card->deferred_resume_work);
} else {
dev_dbg(dev, "ASoC: Scheduling resume work\n");
}
}
- /* add platform data for AC97 devices */
- for (i = 0; i < rtd->num_codecs; i++) {
- if (rtd->codec_dais[i]->driver->ac97_control)
- snd_ac97_dev_add_pdata(rtd->codec_dais[i]->codec->ac97,
- rtd->cpu_dai->ac97_pdata);
- }
-
- return 0;
-}
-
-#ifdef CONFIG_SND_SOC_AC97_BUS
-static int soc_register_ac97_codec(struct snd_soc_codec *codec,
- struct snd_soc_dai *codec_dai)
-{
- int ret;
-
- /* Only instantiate AC97 if not already done by the adaptor
- * for the generic AC97 subsystem.
- */
- if (codec_dai->driver->ac97_control && !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 (!codec->ac97_created)
- return 0;
-
- ret = soc_ac97_dev_register(codec);
- if (ret < 0) {
- dev_err(codec->dev,
- "ASoC: AC97 device register failed: %d\n", ret);
- return ret;
- }
-
- codec->ac97_registered = 1;
- }
- return 0;
-}
-
-static void soc_unregister_ac97_codec(struct snd_soc_codec *codec)
-{
- if (codec->ac97_registered) {
- soc_ac97_dev_unregister(codec);
- codec->ac97_registered = 0;
- }
-}
-
-static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
-{
- int i, ret;
-
- for (i = 0; i < rtd->num_codecs; i++) {
- struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
-
- ret = soc_register_ac97_codec(codec_dai->codec, codec_dai);
- if (ret) {
- while (--i >= 0)
- soc_unregister_ac97_codec(codec_dai->codec);
- return ret;
- }
- }
-
return 0;
}
-static void soc_unregister_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
-{
- int i;
-
- for (i = 0; i < rtd->num_codecs; i++)
- soc_unregister_ac97_codec(rtd->codec_dais[i]->codec);
-}
-#endif
-
static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
{
struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
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]);
- goto probe_aux_dev_err;
- }
- }
-#endif
-
card->instantiated = 1;
snd_soc_dapm_sync(&card->dapm);
mutex_unlock(&card->mutex);
.remove = soc_remove,
};
-/**
- * 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)
-{
- codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
- if (codec->ac97 == NULL)
- return -ENOMEM;
-
- codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
- if (codec->ac97->bus == NULL) {
- kfree(codec->ac97);
- codec->ac97 = NULL;
- 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;
-
- 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_ERR(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_ERR(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_ERR(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_ERR(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)
-{
-#ifdef CONFIG_SND_SOC_AC97_BUS
- soc_unregister_ac97_codec(codec);
-#endif
- kfree(codec->ac97->bus);
- kfree(codec->ac97);
- codec->ac97 = NULL;
- codec->ac97_created = 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
-
/**
* snd_soc_cnew - create new control
* @_template: control template
return 0;
}
-static void snd_soc_component_init_regmap(struct snd_soc_component *component)
+static void snd_soc_component_setup_regmap(struct snd_soc_component *component)
{
- if (!component->regmap)
- component->regmap = dev_get_regmap(component->dev, NULL);
- if (component->regmap) {
- int val_bytes = regmap_get_val_bytes(component->regmap);
- /* Errors are legitimate for non-integer byte multiples */
- if (val_bytes > 0)
- component->val_bytes = val_bytes;
- }
+ int val_bytes = regmap_get_val_bytes(component->regmap);
+
+ /* Errors are legitimate for non-integer byte multiples */
+ if (val_bytes > 0)
+ component->val_bytes = val_bytes;
+}
+
+#ifdef CONFIG_REGMAP
+
+/**
+ * snd_soc_component_init_regmap() - Initialize regmap instance for the component
+ * @component: The component for which to initialize the regmap instance
+ * @regmap: The regmap instance that should be used by the component
+ *
+ * This function allows deferred assignment of the regmap instance that is
+ * associated with the component. Only use this if the regmap instance is not
+ * yet ready when the component is registered. The function must also be called
+ * before the first IO attempt of the component.
+ */
+void snd_soc_component_init_regmap(struct snd_soc_component *component,
+ struct regmap *regmap)
+{
+ component->regmap = regmap;
+ snd_soc_component_setup_regmap(component);
}
+EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap);
+
+/**
+ * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
+ * @component: The component for which to de-initialize the regmap instance
+ *
+ * Calls regmap_exit() on the regmap instance associated to the component and
+ * removes the regmap instance from the component.
+ *
+ * This function should only be used if snd_soc_component_init_regmap() was used
+ * to initialize the regmap instance.
+ */
+void snd_soc_component_exit_regmap(struct snd_soc_component *component)
+{
+ regmap_exit(component->regmap);
+ component->regmap = NULL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap);
+
+#endif
static void snd_soc_component_add_unlocked(struct snd_soc_component *component)
{
- if (!component->write && !component->read)
- snd_soc_component_init_regmap(component);
+ if (!component->write && !component->read) {
+ if (!component->regmap)
+ component->regmap = dev_get_regmap(component->dev, NULL);
+ if (component->regmap)
+ snd_soc_component_setup_regmap(component);
+ }
list_add(&component->list, &component_list);
}
codec->dev = dev;
codec->driver = codec_drv;
codec->component.val_bytes = codec_drv->reg_word_size;
- mutex_init(&codec->mutex);
#ifdef CONFIG_DEBUG_FS
codec->component.init_debugfs = soc_init_codec_debugfs;
const char *propname)
{
struct device_node *np = card->dev->of_node;
- int num_routes;
+ int num_routes, old_routes;
struct snd_soc_dapm_route *routes;
int i, ret;
return -EINVAL;
}
- routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
+ old_routes = card->num_dapm_routes;
+ routes = devm_kzalloc(card->dev,
+ (old_routes + num_routes) * sizeof(*routes),
GFP_KERNEL);
if (!routes) {
dev_err(card->dev,
return -EINVAL;
}
+ memcpy(routes, card->dapm_routes, old_routes * sizeof(*routes));
+
for (i = 0; i < num_routes; i++) {
ret = of_property_read_string_index(np, propname,
- 2 * i, &routes[i].sink);
+ 2 * i, &routes[old_routes + i].sink);
if (ret) {
dev_err(card->dev,
"ASoC: Property '%s' index %d could not be read: %d\n",
return -EINVAL;
}
ret = of_property_read_string_index(np, propname,
- (2 * i) + 1, &routes[i].source);
+ (2 * i) + 1, &routes[old_routes + i].source);
if (ret) {
dev_err(card->dev,
"ASoC: Property '%s' index %d could not be read: %d\n",
}
}
- card->num_dapm_routes = num_routes;
+ card->num_dapm_routes += num_routes;
card->dapm_routes = routes;
return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
-int snd_soc_of_get_dai_name(struct device_node *of_node,
- const char **dai_name)
+static int snd_soc_get_dai_name(struct of_phandle_args *args,
+ 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;
+ int ret = -EPROBE_DEFER;
mutex_lock(&client_mutex);
list_for_each_entry(pos, &component_list, list) {
- if (pos->dev->of_node != args.np)
+ 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);
+ ret = pos->driver->of_xlate_dai_name(pos,
+ args,
+ dai_name);
} else {
int id = -1;
- switch (args.args_count) {
+ switch (args->args_count) {
case 0:
id = 0; /* same as dai_drv[0] */
break;
case 1:
- id = args.args[0];
+ id = args->args[0];
break;
default:
/* not supported */
break;
}
mutex_unlock(&client_mutex);
+ return ret;
+}
+
+int snd_soc_of_get_dai_name(struct device_node *of_node,
+ const char **dai_name)
+{
+ struct of_phandle_args args;
+ int ret;
+
+ ret = of_parse_phandle_with_args(of_node, "sound-dai",
+ "#sound-dai-cells", 0, &args);
+ if (ret)
+ return ret;
+
+ ret = snd_soc_get_dai_name(&args, dai_name);
of_node_put(args.np);
}
EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
+/*
+ * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
+ * @dev: Card device
+ * @of_node: Device node
+ * @dai_link: DAI link
+ *
+ * Builds an array of CODEC DAI components from the DAI link property
+ * 'sound-dai'.
+ * The array is set in the DAI link and the number of DAIs is set accordingly.
+ * The device nodes in the array (of_node) must be dereferenced by the caller.
+ *
+ * Returns 0 for success
+ */
+int snd_soc_of_get_dai_link_codecs(struct device *dev,
+ struct device_node *of_node,
+ struct snd_soc_dai_link *dai_link)
+{
+ struct of_phandle_args args;
+ struct snd_soc_dai_link_component *component;
+ char *name;
+ int index, num_codecs, ret;
+
+ /* Count the number of CODECs */
+ name = "sound-dai";
+ num_codecs = of_count_phandle_with_args(of_node, name,
+ "#sound-dai-cells");
+ if (num_codecs <= 0) {
+ if (num_codecs == -ENOENT)
+ dev_err(dev, "No 'sound-dai' property\n");
+ else
+ dev_err(dev, "Bad phandle in 'sound-dai'\n");
+ return num_codecs;
+ }
+ component = devm_kzalloc(dev,
+ sizeof *component * num_codecs,
+ GFP_KERNEL);
+ if (!component)
+ return -ENOMEM;
+ dai_link->codecs = component;
+ dai_link->num_codecs = num_codecs;
+
+ /* Parse the list */
+ for (index = 0, component = dai_link->codecs;
+ index < dai_link->num_codecs;
+ index++, component++) {
+ ret = of_parse_phandle_with_args(of_node, name,
+ "#sound-dai-cells",
+ index, &args);
+ if (ret)
+ goto err;
+ component->of_node = args.np;
+ ret = snd_soc_get_dai_name(&args, &component->dai_name);
+ if (ret < 0)
+ goto err;
+ }
+ return 0;
+err:
+ for (index = 0, component = dai_link->codecs;
+ index < dai_link->num_codecs;
+ index++, component++) {
+ if (!component->of_node)
+ break;
+ of_node_put(component->of_node);
+ component->of_node = NULL;
+ }
+ dai_link->codecs = NULL;
+ dai_link->num_codecs = 0;
+ return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs);
+
static int __init snd_soc_init(void)
{
#ifdef CONFIG_DEBUG_FS
projects / cascardo / linux.git / blobdiff