Recently I always see the following error message during S4 or S3 resume with drm-intel-nightly. [ 97.778063] PM: Syncing filesystems ... done. [ 97.801550] Freezing user space processes ... (elapsed 0.002 seconds) done. [ 97.804297] PM: Marking nosave pages: [mem 0x00000000-0x00000fff] [ 97.804302] PM: Marking nosave pages: [mem 0x00058000-0x00058fff] [ 97.804305] PM: Marking nosave pages: [mem 0x0009e000-0x000fffff] [ 97.804310] PM: Marking nosave pages: [mem 0x84c11000-0x84c12fff] [ 97.804312] PM: Marking nosave pages: [mem 0x876fc000-0x87746fff] [ 97.804317] PM: Marking nosave pages: [mem 0x8785e000-0x87fe9fff] [ 97.804387] PM: Marking nosave pages: [mem 0x88000000-0xffffffff] [ 97.806363] PM: Basic memory bitmaps created [ 97.806409] PM: Preallocating image memory... done (allocated 321557 pages) [ 98.150475] PM: Allocated 1286228 kbytes in 0.34 seconds (3783.02 MB/s) [ 98.150476] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. [ 98.151998] Suspending console(s) (use no_console_suspend to debug) [ 98.173485] hdmi_present_sense: snd_hda_codec_hdmi hdaudioC0D2: HDMI status: Codec=2 Pin=6 Presence_Detect=1 ELD_Valid=1 [ 99.178150] snd_hda_intel 0000:00:1f.3: spurious response 0x0:0x2, last cmd=0x206f2e08 [ 99.178151] snd_hda_intel 0000:00:1f.3: spurious response 0x0:0x2, last cmd=0x206f2e08 [ 99.178151] snd_hda_intel 0000:00:1f.3: spurious response 0x0:0x2, last cmd=0x206f2e08 [ 99.178152] snd_hda_intel 0000:00:1f.3: spurious response 0x0:0x2, last cmd=0x206f2e08 [ 99.178152] snd_hda_intel 0000:00:1f.3: spurious response 0x0:0x2, last cmd=0x206f2e08 [ 99.178153] snd_hda_intel 0000:00:1f.3: spurious response 0x0:0x2, last cmd=0x206f2e08 [ 99.178153] snd_hda_intel 0000:00:1f.3: spurious response 0x0:0x2, last cmd=0x206f2e08 [ 99.178154] snd_hda_intel 0000:00:1f.3: spurious response 0x0:0x2, last cmd=0x206f2e08 [ 99.178154] snd_hda_intel 0000:00:1f.3: spurious response 0x0:0x2, last cmd=0x206f2e08 [ 99.178155] snd_hda_intel 0000:00:1f.3: spurious response 0x0:0x2, last cmd=0x206f2e08 [ 99.178162] snd_hda_codec_hdmi hdaudioC0D2: HDMI: ELD buf size is 0, force 128 [ 101.189709] snd_hda_intel 0000:00:1f.3: azx_get_response timeout, switching to polling mode: last cmd=0x206f2f00 [ 102.195492] snd_hda_intel 0000:00:1f.3: No response from codec, disabling MSI: last cmd=0x206f2f00 [ 103.201275] snd_hda_intel 0000:00:1f.3: azx_get_response timeout, switching to single_cmd mode: last cmd=0x206f2f00 [ 103.201396] azx_single_wait_for_response: 42 callbacks suppressed The bisect result points to this commit. I checked this patch and had one question: if i915 driver wake up ahead of snd_hda_intel driver during resume, i915 driver will call audio driver's hdmi_present_sense() function through this patch, but the audio interrupt is disabled at this moment, how could hdmi_present_sense() get the response from codec ? thanks > -----Original Message----- > From: Intel-gfx [mailto:intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of > David Henningsson > Sent: Saturday, August 29, 2015 1:03 AM > To: tiwai@xxxxxxx; alsa-devel@xxxxxxxxxxxxxxxx; > intel-gfx@xxxxxxxxxxxxxxxxxxxxx; jani.nikula@xxxxxxxxxxxxxxx; Yang, Libin; Vetter, > Daniel > Cc: David Henningsson > Subject: [PATCH 4/4] ALSA: hda - Wake the codec up on pin/ELD notify > events > > Whenever there is an event from the i915 driver, wake the codec > and recheck plug/unplug + ELD status. > > This fixes the issue with lost unsol events in power save mode, > the codec and controller can now sleep in D3 and still know when > the HDMI monitor has been connected. > > Right now, this might mean we get two callbacks from the same event, > one from the unsol event and one from the i915 driver, but this is > not harmful and can be optimised away in a later patch. > > Reviewed-by: Takashi Iwai <tiwai@xxxxxxx> > Signed-off-by: David Henningsson <david.henningsson@xxxxxxxxxxxxx> > --- > sound/pci/hda/patch_hdmi.c | 22 +++++++++++++++++++++- > 1 file changed, 21 insertions(+), 1 deletion(-) > > diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c > index a97db5f..acbfbe0 100644 > --- a/sound/pci/hda/patch_hdmi.c > +++ b/sound/pci/hda/patch_hdmi.c > @@ -37,6 +37,8 @@ > #include <sound/jack.h> > #include <sound/asoundef.h> > #include <sound/tlv.h> > +#include <sound/hdaudio.h> > +#include <sound/hda_i915.h> > #include "hda_codec.h" > #include "hda_local.h" > #include "hda_jack.h" > @@ -144,6 +146,9 @@ struct hdmi_spec { > */ > struct hda_multi_out multiout; > struct hda_pcm_stream pcm_playback; > + > + /* i915/powerwell (Haswell+/Valleyview+) specific */ > + struct i915_audio_component_audio_ops i915_audio_ops; > }; > > > @@ -2191,6 +2196,9 @@ static void generic_hdmi_free(struct hda_codec > *codec) > struct hdmi_spec *spec = codec->spec; > int pin_idx; > > + if (is_haswell_plus(codec) || is_valleyview_plus(codec)) > + snd_hdac_i915_register_notifier(NULL); > + > for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) { > struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx); > > @@ -2316,6 +2324,14 @@ static void haswell_set_power_state(struct > hda_codec *codec, hda_nid_t fg, > snd_hda_codec_set_power_to_all(codec, fg, power_state); > } > > +static void intel_pin_eld_notify(void *audio_ptr, int port) > +{ > + struct hda_codec *codec = audio_ptr; > + int pin_nid = port + 0x04; > + > + check_presence_and_report(codec, pin_nid); > +} > + > static int patch_generic_hdmi(struct hda_codec *codec) > { > struct hdmi_spec *spec; > @@ -2342,8 +2358,12 @@ static int patch_generic_hdmi(struct hda_codec > *codec) > if (is_valleyview_plus(codec) || is_skylake(codec)) > codec->core.link_power_control = 1; > > - if (is_haswell_plus(codec) || is_valleyview_plus(codec)) > + if (is_haswell_plus(codec) || is_valleyview_plus(codec)) { > codec->depop_delay = 0; > + spec->i915_audio_ops.audio_ptr = codec; > + spec->i915_audio_ops.pin_eld_notify = intel_pin_eld_notify; > + snd_hdac_i915_register_notifier(&spec->i915_audio_ops); > + } > > if (hdmi_parse_codec(codec) < 0) { > codec->spec = NULL; > -- > 1.9.1 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > http://lists.freedesktop.org/mailman/listinfo/intel-gfx _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
