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ALSA: hda - Add init_verbs entries

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This patch enables the additional init verbs for each codec.  The verbs
can be entered via hwdep sysfs file.  These verbs are executed at
reconfiguring the codec for non-standard setups like overriding
the pin-defcfg.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2008-07-30 15:01:46 +02:00
parent d7ffba19ce
commit 11aeff082a
3 changed files with 53 additions and 0 deletions
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13
sound/pci/hda/hda_codec.c
View File

@ -1941,6 +1941,17 @@ static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg,
}
}
#ifdef CONFIG_SND_HDA_HWDEP
/* execute additional init verbs */
static void hda_exec_init_verbs(struct hda_codec *codec)
{
if (codec->init_verbs.list)
snd_hda_sequence_write(codec, codec->init_verbs.list);
}
#else
static inline void hda_exec_init_verbs(struct hda_codec *codec) {}
#endif
#ifdef SND_HDA_NEEDS_RESUME
/*
* call suspend and power-down; used both from PM and power-save
@ -1967,6 +1978,7 @@ static void hda_call_codec_resume(struct hda_codec *codec)
hda_set_power_state(codec,
codec->afg ? codec->afg : codec->mfg,
AC_PWRST_D0);
hda_exec_init_verbs(codec);
if (codec->patch_ops.resume)
codec->patch_ops.resume(codec);
else {
@ -2008,6 +2020,7 @@ int snd_hda_codec_build_controls(struct hda_codec *codec)
hda_set_power_state(codec,
codec->afg ? codec->afg : codec->mfg,
AC_PWRST_D0);
hda_exec_init_verbs(codec);
/* continue to initialize... */
if (codec->patch_ops.init)
err = codec->patch_ops.init(codec);

3
sound/pci/hda/hda_codec.h
View File

@ -751,7 +751,10 @@ struct hda_codec {
unsigned int spdif_in_enable; /* SPDIF input enable? */
hda_nid_t *slave_dig_outs; /* optional digital out slave widgets */
#ifdef CONFIG_SND_HDA_HWDEP
struct snd_hwdep *hwdep; /* assigned hwdep device */
struct snd_array init_verbs; /* additional init verbs */
#endif
/* misc flags */
unsigned int spdif_status_reset :1; /* needs to toggle SPDIF for each

37
sound/pci/hda/hda_hwdep.c
View File

@ -96,6 +96,17 @@ static int hda_hwdep_open(struct snd_hwdep *hw, struct file *file)
return 0;
}
static void clear_hwdep_elements(struct hda_codec *codec)
{
/* clear init verbs */
snd_array_free(&codec->init_verbs);
}
static void hwdep_free(struct snd_hwdep *hwdep)
{
clear_hwdep_elements(hwdep->private_data);
}
int __devinit snd_hda_create_hwdep(struct hda_codec *codec)
{
char hwname[16];
@ -110,6 +121,7 @@ int __devinit snd_hda_create_hwdep(struct hda_codec *codec)
sprintf(hwdep->name, "HDA Codec %d", codec->addr);
hwdep->iface = SNDRV_HWDEP_IFACE_HDA;
hwdep->private_data = codec;
hwdep->private_free = hwdep_free;
hwdep->exclusive = 1;
hwdep->ops.open = hda_hwdep_open;
@ -118,6 +130,8 @@ int __devinit snd_hda_create_hwdep(struct hda_codec *codec)
hwdep->ops.ioctl_compat = hda_hwdep_ioctl_compat;
#endif
snd_array_init(&codec->init_verbs, sizeof(struct hda_verb), 32);
return 0;
}
@ -128,6 +142,7 @@ int __devinit snd_hda_create_hwdep(struct hda_codec *codec)
static int clear_codec(struct hda_codec *codec)
{
snd_hda_codec_reset(codec);
clear_hwdep_elements(codec);
return 0;
}
@ -244,6 +259,27 @@ static ssize_t type##_store(struct device *dev, \
CODEC_ACTION_STORE(reconfig);
CODEC_ACTION_STORE(clear);
static ssize_t init_verbs_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;
struct hda_verb verb, *v;
verb.nid = simple_strtoul(buf, &p, 0);
verb.verb = simple_strtoul(p, &p, 0);
verb.param = simple_strtoul(p, &p, 0);
if (!verb.nid || !verb.verb || !verb.param)
return -EINVAL;
v = snd_array_new(&codec->init_verbs);
if (!v)
return -ENOMEM;
*v = verb;
return count;
}
#define CODEC_ATTR_RW(type) \
__ATTR(type, 0644, type##_show, type##_store)
#define CODEC_ATTR_RO(type) \
@ -259,6 +295,7 @@ 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(reconfig),
CODEC_ATTR_WO(clear),
};