#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 = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
+module_param(power_save, int, 0644);
+MODULE_PARM_DESC(power_save, "Automatic power-saving timeout "
+ "(in second, 0 = disable).");
+#endif
/*
* vendor / preset table
#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
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;
}
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;
}
unsigned int parm;
parm = snd_hda_param_read(codec, nid, AC_PAR_NODE_COUNT);
+ if (parm == -1)
+ return 0;
*start_id = (parm >> 16) & 0x7fff;
return (int)(parm & 0x7fff);
}
static void init_hda_cache(struct hda_cache_rec *cache,
unsigned int record_size);
-static inline void free_hda_cache(struct hda_cache_rec *cache);
+static void free_hda_cache(struct hda_cache_rec *cache);
/*
* codec destructor
{
if (!codec)
return;
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+ cancel_delayed_work(&codec->power_work);
+ flush_scheduled_work();
+#endif
list_del(&codec->list);
codec->bus->caddr_tbl[codec->addr] = NULL;
if (codec->patch_ops.free)
codec->patch_ops.free(codec);
free_hda_cache(&codec->amp_cache);
+ free_hda_cache(&codec->cmd_cache);
kfree(codec->wcaps);
kfree(codec);
}
codec->addr = codec_addr;
mutex_init(&codec->spdif_mutex);
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;
cache->record_size = record_size;
}
-static inline void free_hda_cache(struct hda_cache_rec *cache)
+static void free_hda_cache(struct hda_cache_rec *cache)
{
kfree(cache->buffer);
}
return 0;
val &= mask;
val |= get_vol_mute(codec, info, nid, ch, direction, idx) & ~mask;
- if (info->vol[ch] == val && !codec->in_resume)
+ if (info->vol[ch] == val)
return 0;
put_vol_mute(codec, info, nid, ch, direction, idx, val);
return 1;
}
+/*
+ * update the AMP stereo with the same mask and value
+ */
+int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid,
+ int direction, int idx, int mask, int val)
+{
+ int ch, ret = 0;
+ for (ch = 0; ch < 2; ch++)
+ ret |= snd_hda_codec_amp_update(codec, nid, ch, direction,
+ idx, mask, val);
+ return ret;
+}
+
+#ifdef SND_HDA_NEEDS_RESUME
+/* resume the all amp commands from the cache */
+void snd_hda_codec_resume_amp(struct hda_codec *codec)
+{
+ struct hda_amp_info *buffer = codec->amp_cache.buffer;
+ int i;
+
+ for (i = 0; i < codec->amp_cache.size; i++, buffer++) {
+ u32 key = buffer->head.key;
+ hda_nid_t nid;
+ unsigned int idx, dir, ch;
+ if (!key)
+ continue;
+ nid = key & 0xff;
+ idx = (key >> 16) & 0xff;
+ dir = (key >> 24) & 0xff;
+ for (ch = 0; ch < 2; ch++) {
+ if (!(buffer->head.val & INFO_AMP_VOL(ch)))
+ continue;
+ put_vol_mute(codec, buffer, nid, ch, dir, idx,
+ buffer->vol[ch]);
+ }
+ }
+}
+#endif /* SND_HDA_NEEDS_RESUME */
/*
* AMP control callbacks
long *valp = ucontrol->value.integer.value;
if (chs & 1)
- *valp++ = snd_hda_codec_amp_read(codec, nid, 0, dir, idx) & 0x7f;
+ *valp++ = snd_hda_codec_amp_read(codec, nid, 0, dir, idx)
+ & HDA_AMP_VOLMASK;
if (chs & 2)
- *valp = snd_hda_codec_amp_read(codec, nid, 1, dir, idx) & 0x7f;
+ *valp = snd_hda_codec_amp_read(codec, nid, 1, dir, idx)
+ & HDA_AMP_VOLMASK;
return 0;
}
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);
if (chs & 2)
change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
0x7f, *valp);
+ snd_hda_power_down(codec);
return change;
}
if (chs & 1)
*valp++ = (snd_hda_codec_amp_read(codec, nid, 0, dir, idx) &
- 0x80) ? 0 : 1;
+ HDA_AMP_MUTE) ? 0 : 1;
if (chs & 2)
*valp = (snd_hda_codec_amp_read(codec, nid, 1, dir, idx) &
- 0x80) ? 0 : 1;
+ HDA_AMP_MUTE) ? 0 : 1;
return 0;
}
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,
- 0x80, *valp ? 0 : 0x80);
+ HDA_AMP_MUTE,
+ *valp ? 0 : HDA_AMP_MUTE);
valp++;
}
if (chs & 2)
change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
- 0x80, *valp ? 0 : 0x80);
-
+ 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;
}
change = codec->spdif_ctls != val;
codec->spdif_ctls = val;
- if (change || codec->in_resume) {
- snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1,
- val & 0xff);
- snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_2,
- val >> 8);
+ if (change) {
+ snd_hda_codec_write_cache(codec, nid, 0,
+ AC_VERB_SET_DIGI_CONVERT_1,
+ val & 0xff);
+ snd_hda_codec_write_cache(codec, nid, 0,
+ AC_VERB_SET_DIGI_CONVERT_2,
+ val >> 8);
}
mutex_unlock(&codec->spdif_mutex);
if (ucontrol->value.integer.value[0])
val |= AC_DIG1_ENABLE;
change = codec->spdif_ctls != val;
- if (change || codec->in_resume) {
+ if (change) {
codec->spdif_ctls = val;
- snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1,
- val & 0xff);
+ snd_hda_codec_write_cache(codec, nid, 0,
+ AC_VERB_SET_DIGI_CONVERT_1,
+ val & 0xff);
/* unmute amp switch (if any) */
if ((get_wcaps(codec, nid) & AC_WCAP_OUT_AMP) &&
(val & AC_DIG1_ENABLE))
- snd_hda_codec_write(codec, nid, 0,
- AC_VERB_SET_AMP_GAIN_MUTE,
- AC_AMP_SET_RIGHT | AC_AMP_SET_LEFT |
- AC_AMP_SET_OUTPUT);
+ snd_hda_codec_amp_stereo(codec, nid, HDA_OUTPUT, 0,
+ HDA_AMP_MUTE, 0);
}
mutex_unlock(&codec->spdif_mutex);
return change;
mutex_lock(&codec->spdif_mutex);
change = codec->spdif_in_enable != val;
- if (change || codec->in_resume) {
+ if (change) {
codec->spdif_in_enable = val;
- snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1,
- val);
+ snd_hda_codec_write_cache(codec, nid, 0,
+ AC_VERB_SET_DIGI_CONVERT_1, val);
}
mutex_unlock(&codec->spdif_mutex);
return change;
return 0;
}
+#ifdef SND_HDA_NEEDS_RESUME
+/*
+ * command cache
+ */
+
+/* build a 32bit cache key with the widget id and the command parameter */
+#define build_cmd_cache_key(nid, verb) ((verb << 8) | nid)
+#define get_cmd_cache_nid(key) ((key) & 0xff)
+#define get_cmd_cache_cmd(key) (((key) >> 8) & 0xffff)
+
+/**
+ * snd_hda_codec_write_cache - send a single command with caching
+ * @codec: the HDA codec
+ * @nid: NID to send the command
+ * @direct: direct flag
+ * @verb: the verb to send
+ * @parm: the parameter for the verb
+ *
+ * Send a single command without waiting for response.
+ *
+ * Returns 0 if successful, or a negative error code.
+ */
+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) {
+ struct hda_cache_head *c;
+ u32 key = build_cmd_cache_key(nid, verb);
+ c = get_alloc_hash(&codec->cmd_cache, key);
+ if (c)
+ c->val = parm;
+ }
+ mutex_unlock(&codec->bus->cmd_mutex);
+ snd_hda_power_down(codec);
+ return err;
+}
+
+/* resume the all commands from the cache */
+void snd_hda_codec_resume_cache(struct hda_codec *codec)
+{
+ struct hda_cache_head *buffer = codec->cmd_cache.buffer;
+ int i;
+
+ for (i = 0; i < codec->cmd_cache.size; i++, buffer++) {
+ u32 key = buffer->key;
+ if (!key)
+ continue;
+ snd_hda_codec_write(codec, get_cmd_cache_nid(key), 0,
+ get_cmd_cache_cmd(key), buffer->val);
+ }
+}
+
+/**
+ * snd_hda_sequence_write_cache - sequence writes with caching
+ * @codec: the HDA codec
+ * @seq: VERB array to send
+ *
+ * Send the commands sequentially from the given array.
+ * Thte commands are recorded on cache for power-save and resume.
+ * The array must be terminated with NID=0.
+ */
+void snd_hda_sequence_write_cache(struct hda_codec *codec,
+ const struct hda_verb *seq)
+{
+ for (; seq->nid; seq++)
+ snd_hda_codec_write_cache(codec, seq->nid, 0, seq->verb,
+ seq->param);
+}
+#endif /* SND_HDA_NEEDS_RESUME */
/*
* set power state of the 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++) {
- if (get_wcaps(codec, nid) & AC_WCAP_POWER)
+ nid = codec->start_nid;
+ for (i = 0; i < codec->num_nodes; i++, nid++) {
+ if (get_wcaps(codec, nid) & AC_WCAP_POWER) {
+ unsigned int pincap;
+ /*
+ * don't power down the widget if it controls eapd
+ * and EAPD_BTLENABLE is set.
+ */
+ pincap = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
+ if (pincap & AC_PINCAP_EAPD) {
+ int eapd = snd_hda_codec_read(codec, nid,
+ 0, AC_VERB_GET_EAPD_BTLENABLE, 0);
+ eapd &= 0x02;
+ if (power_state == AC_PWRST_D3 && eapd)
+ continue;
+ }
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);
+ codec->power_on = 0;
+ codec->power_transition = 0;
+#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 {
+ if (codec->patch_ops.init)
+ codec->patch_ops.init(codec);
+ snd_hda_codec_resume_amp(codec);
+ snd_hda_codec_resume_cache(codec);
+ }
}
+#endif /* SND_HDA_NEEDS_RESUME */
/**
{
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;
}
*/
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;
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) {
+ codec->power_transition = 0;
+ return;
+ }
+
+ hda_call_codec_suspend(codec);
+ 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 || codec->power_transition)
+ 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);
+ codec->power_transition = 0;
+}
+
+void snd_hda_power_down(struct hda_codec *codec)
+{
+ --codec->power_count;
+ if (!codec->power_on || codec->power_count || codec->power_transition)
+ return;
+ if (power_save) {
+ codec->power_transition = 1; /* avoid reentrance */
+ 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
mode = ucontrol->value.enumerated.item[0];
snd_assert(mode < num_chmodes, return -EINVAL);
- if (*max_channelsp == chmode[mode].channels && !codec->in_resume)
+ if (*max_channelsp == chmode[mode].channels)
return 0;
/* change the current channel setting */
*max_channelsp = chmode[mode].channels;
if (chmode[mode].sequence)
- snd_hda_sequence_write(codec, chmode[mode].sequence);
+ snd_hda_sequence_write_cache(codec, chmode[mode].sequence);
return 1;
}
uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
uinfo->count = 1;
uinfo->value.enumerated.items = imux->num_items;
+ if (!imux->num_items)
+ return 0;
index = uinfo->value.enumerated.item;
if (index >= imux->num_items)
index = imux->num_items - 1;
{
unsigned int idx;
+ if (!imux->num_items)
+ return 0;
idx = ucontrol->value.enumerated.item[0];
if (idx >= imux->num_items)
idx = imux->num_items - 1;
- if (*cur_val == idx && !codec->in_resume)
+ if (*cur_val == idx)
return 0;
- snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CONNECT_SEL,
- imux->items[idx].index);
+ snd_hda_codec_write_cache(codec, nid, 0, AC_VERB_SET_CONNECT_SEL,
+ imux->items[idx].index);
*cur_val = idx;
return 1;
}
{
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);
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+ if (!codec->power_on)
+ continue;
+#endif
+ hda_call_codec_suspend(codec);
}
return 0;
}
* @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);
+ if (snd_hda_codec_needs_resume(codec))
+ hda_call_codec_resume(codec);
}
return 0;
}
-
-/**
- * snd_hda_resume_ctls - resume controls in the new control list
- * @codec: the HDA codec
- * @knew: the array of struct snd_kcontrol_new
- *
- * This function resumes the mixer controls in the struct snd_kcontrol_new array,
- * originally for snd_hda_add_new_ctls().
- * The array must be terminated with an empty entry as terminator.
- */
-int snd_hda_resume_ctls(struct hda_codec *codec, struct snd_kcontrol_new *knew)
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+int snd_hda_codecs_inuse(struct hda_bus *bus)
{
- struct snd_ctl_elem_value *val;
+ struct hda_codec *codec;
- val = kmalloc(sizeof(*val), GFP_KERNEL);
- if (!val)
- return -ENOMEM;
- codec->in_resume = 1;
- for (; knew->name; knew++) {
- int i, count;
- count = knew->count ? knew->count : 1;
- for (i = 0; i < count; i++) {
- memset(val, 0, sizeof(*val));
- val->id.iface = knew->iface;
- val->id.device = knew->device;
- val->id.subdevice = knew->subdevice;
- strcpy(val->id.name, knew->name);
- val->id.index = knew->index ? knew->index : i;
- /* Assume that get callback reads only from cache,
- * not accessing to the real hardware
- */
- if (snd_ctl_elem_read(codec->bus->card, val) < 0)
- continue;
- snd_ctl_elem_write(codec->bus->card, NULL, val);
- }
+ list_for_each_entry(codec, &bus->codec_list, list) {
+ if (snd_hda_codec_needs_resume(codec))
+ return 1;
}
- codec->in_resume = 0;
- kfree(val);
return 0;
}
-
-/**
- * snd_hda_resume_spdif_out - resume the digital out
- * @codec: the HDA codec
- */
-int snd_hda_resume_spdif_out(struct hda_codec *codec)
-{
- return snd_hda_resume_ctls(codec, dig_mixes);
-}
-
-/**
- * snd_hda_resume_spdif_in - resume the digital in
- * @codec: the HDA codec
- */
-int snd_hda_resume_spdif_in(struct hda_codec *codec)
-{
- return snd_hda_resume_ctls(codec, dig_in_ctls);
-}
+#endif
#endif
git.openpandora.org / pandora-kernel.git / blobdiff