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Diffstat (limited to 'sound/pci/hda/hda_codec.c')
-rw-r--r--sound/pci/hda/hda_codec.c239
1 files changed, 197 insertions, 42 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 04352930867..9a3b72824f8 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -33,6 +33,13 @@
#include "hda_local.h"
#include <sound/hda_hwdep.h>
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+/* define this option here to hide as static */
+static int power_save = 10;
+module_param(power_save, int, 0644);
+MODULE_PARM_DESC(power_save, "Automatic power-saving timeout "
+ "(in second, 0 = disable).");
+#endif
/*
* vendor / preset table
@@ -60,6 +67,13 @@ static struct hda_vendor_id hda_vendor_ids[] = {
#include "hda_patch.h"
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+static void hda_power_work(struct work_struct *work);
+static void hda_keep_power_on(struct hda_codec *codec);
+#else
+static inline void hda_keep_power_on(struct hda_codec *codec) {}
+#endif
+
/**
* snd_hda_codec_read - send a command and get the response
* @codec: the HDA codec
@@ -77,12 +91,14 @@ unsigned int snd_hda_codec_read(struct hda_codec *codec, hda_nid_t nid,
unsigned int verb, unsigned int parm)
{
unsigned int res;
+ snd_hda_power_up(codec);
mutex_lock(&codec->bus->cmd_mutex);
if (!codec->bus->ops.command(codec, nid, direct, verb, parm))
res = codec->bus->ops.get_response(codec);
else
res = (unsigned int)-1;
mutex_unlock(&codec->bus->cmd_mutex);
+ snd_hda_power_down(codec);
return res;
}
@@ -102,9 +118,11 @@ int snd_hda_codec_write(struct hda_codec *codec, hda_nid_t nid, int direct,
unsigned int verb, unsigned int parm)
{
int err;
+ snd_hda_power_up(codec);
mutex_lock(&codec->bus->cmd_mutex);
err = codec->bus->ops.command(codec, nid, direct, verb, parm);
mutex_unlock(&codec->bus->cmd_mutex);
+ snd_hda_power_down(codec);
return err;
}
@@ -505,6 +523,9 @@ static void snd_hda_codec_free(struct hda_codec *codec)
{
if (!codec)
return;
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+ cancel_delayed_work(&codec->power_work);
+#endif
list_del(&codec->list);
codec->bus->caddr_tbl[codec->addr] = NULL;
if (codec->patch_ops.free)
@@ -551,6 +572,15 @@ int __devinit snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr,
init_hda_cache(&codec->amp_cache, sizeof(struct hda_amp_info));
init_hda_cache(&codec->cmd_cache, sizeof(struct hda_cache_head));
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+ INIT_DELAYED_WORK(&codec->power_work, hda_power_work);
+ /* snd_hda_codec_new() marks the codec as power-up, and leave it as is.
+ * the caller has to power down appropriatley after initialization
+ * phase.
+ */
+ hda_keep_power_on(codec);
+#endif
+
list_add_tail(&codec->list, &bus->codec_list);
bus->caddr_tbl[codec_addr] = codec;
@@ -855,7 +885,7 @@ int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid,
return ret;
}
-#ifdef CONFIG_PM
+#ifdef SND_HDA_NEEDS_RESUME
/* resume the all amp commands from the cache */
void snd_hda_codec_resume_amp(struct hda_codec *codec)
{
@@ -879,7 +909,7 @@ void snd_hda_codec_resume_amp(struct hda_codec *codec)
}
}
}
-#endif /* CONFIG_PM */
+#endif /* SND_HDA_NEEDS_RESUME */
/*
* AMP control callbacks
@@ -945,6 +975,7 @@ int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol,
long *valp = ucontrol->value.integer.value;
int change = 0;
+ snd_hda_power_up(codec);
if (chs & 1) {
change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx,
0x7f, *valp);
@@ -953,6 +984,7 @@ int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol,
if (chs & 2)
change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
0x7f, *valp);
+ snd_hda_power_down(codec);
return change;
}
@@ -1025,6 +1057,7 @@ int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol,
long *valp = ucontrol->value.integer.value;
int change = 0;
+ snd_hda_power_up(codec);
if (chs & 1) {
change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx,
HDA_AMP_MUTE,
@@ -1035,7 +1068,11 @@ int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol,
change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
HDA_AMP_MUTE,
*valp ? 0 : HDA_AMP_MUTE);
-
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+ if (codec->patch_ops.check_power_status)
+ codec->patch_ops.check_power_status(codec, nid);
+#endif
+ snd_hda_power_down(codec);
return change;
}
@@ -1502,7 +1539,7 @@ int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid)
return 0;
}
-#ifdef CONFIG_PM
+#ifdef SND_HDA_NEEDS_RESUME
/*
* command cache
*/
@@ -1528,6 +1565,7 @@ int snd_hda_codec_write_cache(struct hda_codec *codec, hda_nid_t nid,
int direct, unsigned int verb, unsigned int parm)
{
int err;
+ snd_hda_power_up(codec);
mutex_lock(&codec->bus->cmd_mutex);
err = codec->bus->ops.command(codec, nid, direct, verb, parm);
if (!err) {
@@ -1538,6 +1576,7 @@ int snd_hda_codec_write_cache(struct hda_codec *codec, hda_nid_t nid,
c->val = parm;
}
mutex_unlock(&codec->bus->cmd_mutex);
+ snd_hda_power_down(codec);
return err;
}
@@ -1572,7 +1611,7 @@ void snd_hda_sequence_write_cache(struct hda_codec *codec,
snd_hda_codec_write_cache(codec, seq->nid, 0, seq->verb,
seq->param);
}
-#endif /* CONFIG_PM */
+#endif /* SND_HDA_NEEDS_RESUME */
/*
* set power state of the codec
@@ -1580,24 +1619,70 @@ void snd_hda_sequence_write_cache(struct hda_codec *codec,
static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg,
unsigned int power_state)
{
- hda_nid_t nid, nid_start;
- int nodes;
+ hda_nid_t nid;
+ int i;
snd_hda_codec_write(codec, fg, 0, AC_VERB_SET_POWER_STATE,
power_state);
- nodes = snd_hda_get_sub_nodes(codec, fg, &nid_start);
- for (nid = nid_start; nid < nodes + nid_start; nid++) {
+ nid = codec->start_nid;
+ for (i = 0; i < codec->num_nodes; i++, nid++) {
if (get_wcaps(codec, nid) & AC_WCAP_POWER)
snd_hda_codec_write(codec, nid, 0,
AC_VERB_SET_POWER_STATE,
power_state);
}
- if (power_state == AC_PWRST_D0)
+ if (power_state == AC_PWRST_D0) {
+ unsigned long end_time;
+ int state;
msleep(10);
+ /* wait until the codec reachs to D0 */
+ end_time = jiffies + msecs_to_jiffies(500);
+ do {
+ state = snd_hda_codec_read(codec, fg, 0,
+ AC_VERB_GET_POWER_STATE, 0);
+ if (state == power_state)
+ break;
+ msleep(1);
+ } while (time_after_eq(end_time, jiffies));
+ }
+}
+
+#ifdef SND_HDA_NEEDS_RESUME
+/*
+ * call suspend and power-down; used both from PM and power-save
+ */
+static void hda_call_codec_suspend(struct hda_codec *codec)
+{
+ if (codec->patch_ops.suspend)
+ codec->patch_ops.suspend(codec, PMSG_SUSPEND);
+ hda_set_power_state(codec,
+ codec->afg ? codec->afg : codec->mfg,
+ AC_PWRST_D3);
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+ cancel_delayed_work(&codec->power_work);
+#endif
}
+/*
+ * kick up codec; used both from PM and power-save
+ */
+static void hda_call_codec_resume(struct hda_codec *codec)
+{
+ hda_set_power_state(codec,
+ codec->afg ? codec->afg : codec->mfg,
+ AC_PWRST_D0);
+ if (codec->patch_ops.resume)
+ codec->patch_ops.resume(codec);
+ else {
+ codec->patch_ops.init(codec);
+ snd_hda_codec_resume_amp(codec);
+ snd_hda_codec_resume_cache(codec);
+ }
+}
+#endif /* SND_HDA_NEEDS_RESUME */
+
/**
* snd_hda_build_controls - build mixer controls
@@ -1611,28 +1696,24 @@ int __devinit snd_hda_build_controls(struct hda_bus *bus)
{
struct hda_codec *codec;
- /* build controls */
list_for_each_entry(codec, &bus->codec_list, list) {
- int err;
- if (!codec->patch_ops.build_controls)
- continue;
- err = codec->patch_ops.build_controls(codec);
- if (err < 0)
- return err;
- }
-
- /* initialize */
- list_for_each_entry(codec, &bus->codec_list, list) {
- int err;
+ int err = 0;
+ /* fake as if already powered-on */
+ hda_keep_power_on(codec);
+ /* then fire up */
hda_set_power_state(codec,
codec->afg ? codec->afg : codec->mfg,
AC_PWRST_D0);
- if (!codec->patch_ops.init)
- continue;
- err = codec->patch_ops.init(codec);
+ /* continue to initialize... */
+ if (codec->patch_ops.init)
+ err = codec->patch_ops.init(codec);
+ if (!err && codec->patch_ops.build_controls)
+ err = codec->patch_ops.build_controls(codec);
+ snd_hda_power_down(codec);
if (err < 0)
return err;
}
+
return 0;
}
@@ -2078,7 +2159,7 @@ int snd_hda_check_board_config(struct hda_codec *codec,
*/
int snd_hda_add_new_ctls(struct hda_codec *codec, struct snd_kcontrol_new *knew)
{
- int err;
+ int err;
for (; knew->name; knew++) {
struct snd_kcontrol *kctl;
@@ -2101,6 +2182,89 @@ int snd_hda_add_new_ctls(struct hda_codec *codec, struct snd_kcontrol_new *knew)
return 0;
}
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg,
+ unsigned int power_state);
+
+static void hda_power_work(struct work_struct *work)
+{
+ struct hda_codec *codec =
+ container_of(work, struct hda_codec, power_work.work);
+
+ if (!codec->power_on || codec->power_count)
+ return;
+
+ hda_call_codec_suspend(codec);
+ codec->power_on = 0;
+ if (codec->bus->ops.pm_notify)
+ codec->bus->ops.pm_notify(codec);
+}
+
+static void hda_keep_power_on(struct hda_codec *codec)
+{
+ codec->power_count++;
+ codec->power_on = 1;
+}
+
+void snd_hda_power_up(struct hda_codec *codec)
+{
+ codec->power_count++;
+ if (codec->power_on)
+ return;
+
+ codec->power_on = 1;
+ if (codec->bus->ops.pm_notify)
+ codec->bus->ops.pm_notify(codec);
+ hda_call_codec_resume(codec);
+ cancel_delayed_work(&codec->power_work);
+}
+
+void snd_hda_power_down(struct hda_codec *codec)
+{
+ --codec->power_count;
+ if (!codec->power_on)
+ return;
+ if (power_save)
+ schedule_delayed_work(&codec->power_work,
+ msecs_to_jiffies(power_save * 1000));
+}
+
+int snd_hda_check_amp_list_power(struct hda_codec *codec,
+ struct hda_loopback_check *check,
+ hda_nid_t nid)
+{
+ struct hda_amp_list *p;
+ int ch, v;
+
+ if (!check->amplist)
+ return 0;
+ for (p = check->amplist; p->nid; p++) {
+ if (p->nid == nid)
+ break;
+ }
+ if (!p->nid)
+ return 0; /* nothing changed */
+
+ for (p = check->amplist; p->nid; p++) {
+ for (ch = 0; ch < 2; ch++) {
+ v = snd_hda_codec_amp_read(codec, p->nid, ch, p->dir,
+ p->idx);
+ if (!(v & HDA_AMP_MUTE) && v > 0) {
+ if (!check->power_on) {
+ check->power_on = 1;
+ snd_hda_power_up(codec);
+ }
+ return 1;
+ }
+ }
+ }
+ if (check->power_on) {
+ check->power_on = 0;
+ snd_hda_power_down(codec);
+ }
+ return 0;
+}
+#endif
/*
* Channel mode helper
@@ -2605,41 +2769,32 @@ int snd_hda_suspend(struct hda_bus *bus, pm_message_t state)
{
struct hda_codec *codec;
- /* FIXME: should handle power widget capabilities */
list_for_each_entry(codec, &bus->codec_list, list) {
- if (codec->patch_ops.suspend)
- codec->patch_ops.suspend(codec, state);
- hda_set_power_state(codec,
- codec->afg ? codec->afg : codec->mfg,
- AC_PWRST_D3);
+ hda_call_codec_suspend(codec);
}
return 0;
}
+#ifndef CONFIG_SND_HDA_POWER_SAVE
/**
* snd_hda_resume - resume the codecs
* @bus: the HDA bus
* @state: resume state
*
* Returns 0 if successful.
+ *
+ * This fucntion is defined only when POWER_SAVE isn't set.
+ * In the power-save mode, the codec is resumed dynamically.
*/
int snd_hda_resume(struct hda_bus *bus)
{
struct hda_codec *codec;
list_for_each_entry(codec, &bus->codec_list, list) {
- hda_set_power_state(codec,
- codec->afg ? codec->afg : codec->mfg,
- AC_PWRST_D0);
- if (codec->patch_ops.resume)
- codec->patch_ops.resume(codec);
- else {
- codec->patch_ops.init(codec);
- snd_hda_codec_resume_amp(codec);
- snd_hda_codec_resume_cache(codec);
- }
+ hda_call_codec_resume(codec);
}
return 0;
}
+#endif /* !CONFIG_SND_HDA_POWER_SAVE */
#endif