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ALSA: hda - Fix D3 clock stop check for codecs with own set_power_state op

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When a codec provides its own set_power_state op, the D3-clock-stop
isn't checked correctly.  And the recent changes for repeating the
state-setting operation isn't applied to such a codec, too.

This patch fixes these issues by moving the call of codec's own op to
the place where the generic power-set operation is done, and move the
power-state synchronization code out of
snd_hda_set_power_state_to_all() so that it can be called always at
the end of power-up/down sequence, and updates the D3 clock-stop flag
properly.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2012-08-28 09:59:20 -07:00
parent 68467f51c1
commit 432c641e01
1 changed files with 37 additions and 24 deletions
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61
sound/pci/hda/hda_codec.c
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@ -3518,20 +3518,6 @@ void snd_hda_codec_set_power_to_all(struct hda_codec *codec, hda_nid_t fg,
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_POWER_STATE,
power_state);
}
if (power_state == AC_PWRST_D0) {
unsigned long end_time;
int state;
/* 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));
}
}
EXPORT_SYMBOL_HDA(snd_hda_codec_set_power_to_all);
@ -3551,6 +3537,32 @@ static bool snd_hda_codec_get_supported_ps(struct hda_codec *codec, hda_nid_t fg
return false;
}
/*
* wait until the state is reached, returns the current state
*/
static unsigned int hda_sync_power_state(struct hda_codec *codec,
hda_nid_t fg,
unsigned int power_state)
{
unsigned long end_time = jiffies + msecs_to_jiffies(500);
unsigned int state, actual_state;
for (;;) {
state = snd_hda_codec_read(codec, fg, 0,
AC_VERB_GET_POWER_STATE, 0);
if (state & AC_PWRST_ERROR)
break;
actual_state = (state >> 4) & 0x0f;
if (actual_state == power_state)
break;
if (time_after_eq(jiffies, end_time))
break;
/* wait until the codec reachs to the target state */
msleep(1);
}
return state;
}
/*
* set power state of the codec
*/
@ -3564,11 +3576,6 @@ static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg,
codec->d3_stop_clk_ok = 0;
#endif
if (codec->patch_ops.set_power_state) {
codec->patch_ops.set_power_state(codec, fg, power_state);
return;
}
/* this delay seems necessary to avoid click noise at power-down */
if (power_state == AC_PWRST_D3) {
/* transition time less than 10ms for power down */
@ -3577,11 +3584,17 @@ static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg,
/* repeat power states setting at most 10 times*/
for (count = 0; count < 10; count++) {
snd_hda_codec_read(codec, fg, 0, AC_VERB_SET_POWER_STATE,
power_state);
snd_hda_codec_set_power_to_all(codec, fg, power_state, true);
state = snd_hda_codec_read(codec, fg, 0,
AC_VERB_GET_POWER_STATE, 0);
if (codec->patch_ops.set_power_state)
codec->patch_ops.set_power_state(codec, fg,
power_state);
else {
snd_hda_codec_read(codec, fg, 0,
AC_VERB_SET_POWER_STATE,
power_state);
snd_hda_codec_set_power_to_all(codec, fg, power_state,
true);
}
state = hda_sync_power_state(codec, fg, power_state);
if (!(state & AC_PWRST_ERROR))
break;
}