diff options
Diffstat (limited to 'sound/pci')
-rw-r--r-- | sound/pci/hda/hda_codec.c | 9 | ||||
-rw-r--r-- | sound/pci/hda/hda_local.h | 13 | ||||
-rw-r--r-- | sound/pci/hda/patch_via.c | 11 |
3 files changed, 18 insertions, 15 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 2311114..f82a64d 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -3779,18 +3779,13 @@ static void sync_power_up_states(struct hda_codec *codec) for (i = 0; i < codec->num_nodes; i++, nid++) { unsigned int wcaps = get_wcaps(codec, nid); - unsigned int state, target; + unsigned int target; if (!(wcaps & AC_WCAP_POWER)) continue; target = codec->power_filter(codec, nid, AC_PWRST_D0); if (target == AC_PWRST_D0) continue; - state = snd_hda_codec_read(codec, nid, 0, - AC_VERB_GET_POWER_STATE, 0); - if (state & AC_PWRST_ERROR) - continue; - state = (state >> 4) & 0x0f; - if (state != target) + if (!snd_hda_check_power_state(codec, nid, target)) snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_POWER_STATE, target); } diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h index 2ff62dc..05f1d59 100644 --- a/sound/pci/hda/hda_local.h +++ b/sound/pci/hda/hda_local.h @@ -657,6 +657,19 @@ int snd_hda_check_amp_list_power(struct hda_codec *codec, struct hda_loopback_check *check, hda_nid_t nid); +/* check whether the actual power state matches with the target state */ +static inline bool +snd_hda_check_power_state(struct hda_codec *codec, hda_nid_t nid, + unsigned int target_state) +{ + unsigned int state = snd_hda_codec_read(codec, nid, 0, + AC_VERB_GET_POWER_STATE, 0); + if (state & AC_PWRST_ERROR) + return true; + state = (state >> 4) & 0x0f; + return (state != target_state); +} + /* * AMP control callbacks */ diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c index 5bd4b0c..9641c0e 100644 --- a/sound/pci/hda/patch_via.c +++ b/sound/pci/hda/patch_via.c @@ -240,10 +240,7 @@ static void set_widgets_power_state(struct hda_codec *codec) static void update_power_state(struct hda_codec *codec, hda_nid_t nid, unsigned int parm) { - unsigned int state = snd_hda_codec_read(codec, nid, 0, - AC_VERB_GET_POWER_STATE, 0); - state = (state >> 4) & 0x0f; - if (state == parm) + if (snd_hda_check_power_state(codec, nid, parm)) return; snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_POWER_STATE, parm); } @@ -253,10 +250,8 @@ static void update_conv_power_state(struct hda_codec *codec, hda_nid_t nid, { struct via_spec *spec = codec->spec; unsigned int format; - unsigned int state = snd_hda_codec_read(codec, nid, 0, - AC_VERB_GET_POWER_STATE, 0); - state = (state >> 4) & 0x0f; - if (state == parm) + + if (snd_hda_check_power_state(codec, nid, parm)) return; format = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0); if (format && (spec->dac_stream_tag[index] != format)) |