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path: root/sound/pci/hda/hda_hwdep.c
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Diffstat (limited to 'sound/pci/hda/hda_hwdep.c')
-rw-r--r--sound/pci/hda/hda_hwdep.c240
1 files changed, 219 insertions, 21 deletions
diff --git a/sound/pci/hda/hda_hwdep.c b/sound/pci/hda/hda_hwdep.c
index 4ae51dcb81af..1c57505c2874 100644
--- a/sound/pci/hda/hda_hwdep.c
+++ b/sound/pci/hda/hda_hwdep.c
@@ -30,6 +30,12 @@
#include <sound/hda_hwdep.h>
#include <sound/minors.h>
+/* hint string pair */
+struct hda_hint {
+ const char *key;
+ const char *val; /* contained in the same alloc as key */
+};
+
/*
* write/read an out-of-bound verb
*/
@@ -99,16 +105,17 @@ static int hda_hwdep_open(struct snd_hwdep *hw, struct file *file)
static void clear_hwdep_elements(struct hda_codec *codec)
{
- char **head;
int i;
/* clear init verbs */
snd_array_free(&codec->init_verbs);
/* clear hints */
- head = codec->hints.list;
- for (i = 0; i < codec->hints.used; i++, head++)
- kfree(*head);
+ for (i = 0; i < codec->hints.used; i++) {
+ struct hda_hint *hint = snd_array_elem(&codec->hints, i);
+ kfree(hint->key); /* we don't need to free hint->val */
+ }
snd_array_free(&codec->hints);
+ snd_array_free(&codec->user_pins);
}
static void hwdep_free(struct snd_hwdep *hwdep)
@@ -140,7 +147,8 @@ int /*__devinit*/ snd_hda_create_hwdep(struct hda_codec *codec)
#endif
snd_array_init(&codec->init_verbs, sizeof(struct hda_verb), 32);
- snd_array_init(&codec->hints, sizeof(char *), 32);
+ snd_array_init(&codec->hints, sizeof(struct hda_hint), 32);
+ snd_array_init(&codec->user_pins, sizeof(struct hda_pincfg), 16);
return 0;
}
@@ -153,7 +161,13 @@ int /*__devinit*/ snd_hda_create_hwdep(struct hda_codec *codec)
static int clear_codec(struct hda_codec *codec)
{
- snd_hda_codec_reset(codec);
+ int err;
+
+ err = snd_hda_codec_reset(codec);
+ if (err < 0) {
+ snd_printk(KERN_ERR "The codec is being used, can't free.\n");
+ return err;
+ }
clear_hwdep_elements(codec);
return 0;
}
@@ -162,20 +176,29 @@ static int reconfig_codec(struct hda_codec *codec)
{
int err;
+ snd_hda_power_up(codec);
snd_printk(KERN_INFO "hda-codec: reconfiguring\n");
- snd_hda_codec_reset(codec);
+ err = snd_hda_codec_reset(codec);
+ if (err < 0) {
+ snd_printk(KERN_ERR
+ "The codec is being used, can't reconfigure.\n");
+ goto error;
+ }
err = snd_hda_codec_configure(codec);
if (err < 0)
- return err;
+ goto error;
/* rebuild PCMs */
err = snd_hda_codec_build_pcms(codec);
if (err < 0)
- return err;
+ goto error;
/* rebuild mixers */
err = snd_hda_codec_build_controls(codec);
if (err < 0)
- return err;
- return snd_card_register(codec->bus->card);
+ goto error;
+ err = snd_card_register(codec->bus->card);
+ error:
+ snd_hda_power_down(codec);
+ return err;
}
/*
@@ -271,6 +294,22 @@ static ssize_t type##_store(struct device *dev, \
CODEC_ACTION_STORE(reconfig);
CODEC_ACTION_STORE(clear);
+static ssize_t init_verbs_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct snd_hwdep *hwdep = dev_get_drvdata(dev);
+ struct hda_codec *codec = hwdep->private_data;
+ int i, len = 0;
+ for (i = 0; i < codec->init_verbs.used; i++) {
+ struct hda_verb *v = snd_array_elem(&codec->init_verbs, i);
+ len += snprintf(buf + len, PAGE_SIZE - len,
+ "0x%02x 0x%03x 0x%04x\n",
+ v->nid, v->verb, v->param);
+ }
+ return len;
+}
+
static ssize_t init_verbs_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
@@ -293,26 +332,157 @@ static ssize_t init_verbs_store(struct device *dev,
return count;
}
+static ssize_t hints_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct snd_hwdep *hwdep = dev_get_drvdata(dev);
+ struct hda_codec *codec = hwdep->private_data;
+ int i, len = 0;
+ for (i = 0; i < codec->hints.used; i++) {
+ struct hda_hint *hint = snd_array_elem(&codec->hints, i);
+ len += snprintf(buf + len, PAGE_SIZE - len,
+ "%s = %s\n", hint->key, hint->val);
+ }
+ return len;
+}
+
+static struct hda_hint *get_hint(struct hda_codec *codec, const char *key)
+{
+ int i;
+
+ for (i = 0; i < codec->hints.used; i++) {
+ struct hda_hint *hint = snd_array_elem(&codec->hints, i);
+ if (!strcmp(hint->key, key))
+ return hint;
+ }
+ return NULL;
+}
+
+static void remove_trail_spaces(char *str)
+{
+ char *p;
+ if (!*str)
+ return;
+ p = str + strlen(str) - 1;
+ for (; isspace(*p); p--) {
+ *p = 0;
+ if (p == str)
+ return;
+ }
+}
+
+#define MAX_HINTS 1024
+
static ssize_t hints_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct snd_hwdep *hwdep = dev_get_drvdata(dev);
struct hda_codec *codec = hwdep->private_data;
- char *p;
- char **hint;
+ char *key, *val;
+ struct hda_hint *hint;
- if (!*buf || isspace(*buf) || *buf == '#' || *buf == '\n')
+ while (isspace(*buf))
+ buf++;
+ if (!*buf || *buf == '#' || *buf == '\n')
return count;
- p = kstrndup_noeol(buf, 1024);
- if (!p)
+ if (*buf == '=')
+ return -EINVAL;
+ key = kstrndup_noeol(buf, 1024);
+ if (!key)
return -ENOMEM;
- hint = snd_array_new(&codec->hints);
+ /* extract key and val */
+ val = strchr(key, '=');
+ if (!val) {
+ kfree(key);
+ return -EINVAL;
+ }
+ *val++ = 0;
+ while (isspace(*val))
+ val++;
+ remove_trail_spaces(key);
+ remove_trail_spaces(val);
+ hint = get_hint(codec, key);
+ if (hint) {
+ /* replace */
+ kfree(hint->key);
+ hint->key = key;
+ hint->val = val;
+ return count;
+ }
+ /* allocate a new hint entry */
+ if (codec->hints.used >= MAX_HINTS)
+ hint = NULL;
+ else
+ hint = snd_array_new(&codec->hints);
if (!hint) {
- kfree(p);
+ kfree(key);
return -ENOMEM;
}
- *hint = p;
+ hint->key = key;
+ hint->val = val;
+ return count;
+}
+
+static ssize_t pin_configs_show(struct hda_codec *codec,
+ struct snd_array *list,
+ char *buf)
+{
+ int i, len = 0;
+ for (i = 0; i < list->used; i++) {
+ struct hda_pincfg *pin = snd_array_elem(list, i);
+ len += sprintf(buf + len, "0x%02x 0x%08x\n",
+ pin->nid, pin->cfg);
+ }
+ return len;
+}
+
+static ssize_t init_pin_configs_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct snd_hwdep *hwdep = dev_get_drvdata(dev);
+ struct hda_codec *codec = hwdep->private_data;
+ return pin_configs_show(codec, &codec->init_pins, buf);
+}
+
+static ssize_t user_pin_configs_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct snd_hwdep *hwdep = dev_get_drvdata(dev);
+ struct hda_codec *codec = hwdep->private_data;
+ return pin_configs_show(codec, &codec->user_pins, buf);
+}
+
+static ssize_t driver_pin_configs_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct snd_hwdep *hwdep = dev_get_drvdata(dev);
+ struct hda_codec *codec = hwdep->private_data;
+ return pin_configs_show(codec, &codec->driver_pins, buf);
+}
+
+#define MAX_PIN_CONFIGS 32
+
+static ssize_t user_pin_configs_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct snd_hwdep *hwdep = dev_get_drvdata(dev);
+ struct hda_codec *codec = hwdep->private_data;
+ int nid, cfg;
+ int err;
+
+ if (sscanf(buf, "%i %i", &nid, &cfg) != 2)
+ return -EINVAL;
+ if (!nid)
+ return -EINVAL;
+ err = snd_hda_add_pincfg(codec, &codec->user_pins, nid, cfg);
+ if (err < 0)
+ return err;
return count;
}
@@ -331,8 +501,11 @@ static struct device_attribute codec_attrs[] = {
CODEC_ATTR_RO(mfg),
CODEC_ATTR_RW(name),
CODEC_ATTR_RW(modelname),
- CODEC_ATTR_WO(init_verbs),
- CODEC_ATTR_WO(hints),
+ CODEC_ATTR_RW(init_verbs),
+ CODEC_ATTR_RW(hints),
+ CODEC_ATTR_RO(init_pin_configs),
+ CODEC_ATTR_RW(user_pin_configs),
+ CODEC_ATTR_RO(driver_pin_configs),
CODEC_ATTR_WO(reconfig),
CODEC_ATTR_WO(clear),
};
@@ -351,4 +524,29 @@ int snd_hda_hwdep_add_sysfs(struct hda_codec *codec)
return 0;
}
+/*
+ * Look for hint string
+ */
+const char *snd_hda_get_hint(struct hda_codec *codec, const char *key)
+{
+ struct hda_hint *hint = get_hint(codec, key);
+ return hint ? hint->val : NULL;
+}
+EXPORT_SYMBOL_HDA(snd_hda_get_hint);
+
+int snd_hda_get_bool_hint(struct hda_codec *codec, const char *key)
+{
+ const char *p = snd_hda_get_hint(codec, key);
+ if (!p || !*p)
+ return -ENOENT;
+ switch (toupper(*p)) {
+ case 'T': /* true */
+ case 'Y': /* yes */
+ case '1':
+ return 1;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_HDA(snd_hda_get_bool_hint);
+
#endif /* CONFIG_SND_HDA_RECONFIG */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 10:30:35 +0000