ALSA: hda - Add generic pincfg initialization
Added the generic pincfg cache and save/restore functions.
Also introduced the pin-overriding via hwdep sysfs.
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 4ae51dc..71039a6 100644
--- a/sound/pci/hda/hda_hwdep.c
+++ b/sound/pci/hda/hda_hwdep.c
@@ -109,6 +109,7 @@
for (i = 0; i < codec->hints.used; i++, head++)
kfree(*head);
snd_array_free(&codec->hints);
+ snd_array_free(&codec->override_pins);
}
static void hwdep_free(struct snd_hwdep *hwdep)
@@ -141,6 +142,7 @@
snd_array_init(&codec->init_verbs, sizeof(struct hda_verb), 32);
snd_array_init(&codec->hints, sizeof(char *), 32);
+ snd_array_init(&codec->override_pins, sizeof(struct hda_pincfg), 16);
return 0;
}
@@ -316,6 +318,67 @@
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 override_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->override_pins, buf);
+}
+
+static ssize_t cur_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->cur_pins, buf);
+}
+
+#define MAX_PIN_CONFIGS 32
+
+static ssize_t override_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->override_pins, nid, cfg);
+ if (err < 0)
+ return err;
+ return count;
+}
+
#define CODEC_ATTR_RW(type) \
__ATTR(type, 0644, type##_show, type##_store)
#define CODEC_ATTR_RO(type) \
@@ -333,6 +396,9 @@
CODEC_ATTR_RW(modelname),
CODEC_ATTR_WO(init_verbs),
CODEC_ATTR_WO(hints),
+ CODEC_ATTR_RO(init_pin_configs),
+ CODEC_ATTR_RW(override_pin_configs),
+ CODEC_ATTR_RO(cur_pin_configs),
CODEC_ATTR_WO(reconfig),
CODEC_ATTR_WO(clear),
};