diff options
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 61 |
1 files changed, 37 insertions, 24 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 90b34e83041..409f5ecd0a7 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -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); @@ -3552,6 +3538,32 @@ static bool snd_hda_codec_get_supported_ps(struct hda_codec *codec, hda_nid_t fg } /* + * 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 */ static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg, @@ -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; } |