ALSA: hda - Add show for init_verbs and hints sysfs entries

Added the show method for init_verbs and hints hwdep sysfs entries.
They show the current values.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/hda_hwdep.c b/sound/pci/hda/hda_hwdep.c
index 5e554de9cd9bb25e7e38e6b4c4fae44fc1d76dc6..1e3ccc740afc53dabe273b9c0a6636357d2b9fba 100644 (file)
--- a/sound/pci/hda/hda_hwdep.c
+++ b/sound/pci/hda/hda_hwdep.c
@@ -290,6 +290,22 @@ 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)
@@ -312,6 +328,21 @@ 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;
@@ -466,8 +497,8 @@ 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),