[alsa-devel] [PATCH] ALSA: hda - Fix error accessing non-existent node for Realtek codecs
A recent commit caused my hda-emu based test tool to complain about accessing nodes that don't exist. This simple test works around this.
Signed-off-by: David Henningsson david.henningsson@canonical.com --- sound/pci/hda/patch_realtek.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
I don't have ALC5505 hardware here, no alsa-info to look at, and I don't know what it is. Therefore it would be good with some confirmation that this patch does not break such hardware, which could be the case if the Realtek codec breaks the HDA spec by having "hidden" nodes.
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 8bd2261..ca73f10 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3844,7 +3844,8 @@ static int patch_alc269(struct hda_codec *codec) break; }
- if (snd_hda_codec_read(codec, 0x51, 0, AC_VERB_PARAMETERS, 0) == 0x10ec5505) { + if (codec->num_nodes > 0x51 && + snd_hda_codec_read(codec, 0x51, 0, AC_VERB_PARAMETERS, 0) == 0x10ec5505) { spec->has_alc5505_dsp = true; spec->init_hook = alc5505_dsp_init; }
At Mon, 15 Jul 2013 10:20:52 +0200, David Henningsson wrote:
A recent commit caused my hda-emu based test tool to complain about accessing nodes that don't exist. This simple test works around this.
Signed-off-by: David Henningsson david.henningsson@canonical.com
sound/pci/hda/patch_realtek.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
I don't have ALC5505 hardware here, no alsa-info to look at, and I don't know what it is. Therefore it would be good with some confirmation that this patch does not break such hardware, which could be the case if the Realtek codec breaks the HDA spec by having "hidden" nodes.
It seems that ALC5505 itself doesn't appear in the codec information but it appears transparent to the real codec behind it. So the node 0x51 doesn't exist in the widget list of the codec, and your patch will break.
we may need to patch hda-emu instead...
Takashi
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 8bd2261..ca73f10 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3844,7 +3844,8 @@ static int patch_alc269(struct hda_codec *codec) break; }
- if (snd_hda_codec_read(codec, 0x51, 0, AC_VERB_PARAMETERS, 0) == 0x10ec5505) {
- if (codec->num_nodes > 0x51 &&
snd_hda_codec_read(codec, 0x51, 0, AC_VERB_PARAMETERS, 0) == 0x10ec5505) {-- 1.7.9.5
On 07/15/2013 10:55 AM, Takashi Iwai wrote:
At Mon, 15 Jul 2013 10:20:52 +0200, David Henningsson wrote:
A recent commit caused my hda-emu based test tool to complain about accessing nodes that don't exist. This simple test works around this.
Signed-off-by: David Henningsson david.henningsson@canonical.com
sound/pci/hda/patch_realtek.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
I don't have ALC5505 hardware here, no alsa-info to look at, and I don't know what it is. Therefore it would be good with some confirmation that this patch does not break such hardware, which could be the case if the Realtek codec breaks the HDA spec by having "hidden" nodes.
It seems that ALC5505 itself doesn't appear in the codec information but it appears transparent to the real codec behind it. So the node 0x51 doesn't exist in the widget list of the codec, and your patch will break.
I suspected that, but without alsa-info there was no way to tell if this was the case or not.
we may need to patch hda-emu instead...
Okay. Also, is there a way to limit the effect here, like, what codec (or codec variants) have this secret 0x51 node? Right now it's being tested for most of ALC2xx codecs.
Takashi
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 8bd2261..ca73f10 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3844,7 +3844,8 @@ static int patch_alc269(struct hda_codec *codec) break; }
- if (snd_hda_codec_read(codec, 0x51, 0, AC_VERB_PARAMETERS, 0) == 0x10ec5505) {
- if (codec->num_nodes > 0x51 &&
snd_hda_codec_read(codec, 0x51, 0, AC_VERB_PARAMETERS, 0) == 0x10ec5505) {-- 1.7.9.5
At Mon, 15 Jul 2013 10:58:16 +0200, David Henningsson wrote:
On 07/15/2013 10:55 AM, Takashi Iwai wrote:
At Mon, 15 Jul 2013 10:20:52 +0200, David Henningsson wrote:
A recent commit caused my hda-emu based test tool to complain about accessing nodes that don't exist. This simple test works around this.
Signed-off-by: David Henningsson david.henningsson@canonical.com
sound/pci/hda/patch_realtek.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
I don't have ALC5505 hardware here, no alsa-info to look at, and I don't know what it is. Therefore it would be good with some confirmation that this patch does not break such hardware, which could be the case if the Realtek codec breaks the HDA spec by having "hidden" nodes.
It seems that ALC5505 itself doesn't appear in the codec information but it appears transparent to the real codec behind it. So the node 0x51 doesn't exist in the widget list of the codec, and your patch will break.
I suspected that, but without alsa-info there was no way to tell if this was the case or not.
we may need to patch hda-emu instead...
Okay. Also, is there a way to limit the effect here, like, what codec (or codec variants) have this secret 0x51 node? Right now it's being tested for most of ALC2xx codecs.
I guess this won't be limited to any codec type. The DSP itself seems transparent, so it could be connected to any codec.
Right now, we patched alc269 variants because they are only real cases, so far.
Takashi
Takashi
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 8bd2261..ca73f10 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3844,7 +3844,8 @@ static int patch_alc269(struct hda_codec *codec) break; }
- if (snd_hda_codec_read(codec, 0x51, 0, AC_VERB_PARAMETERS, 0) == 0x10ec5505) {
- if (codec->num_nodes > 0x51 &&
snd_hda_codec_read(codec, 0x51, 0, AC_VERB_PARAMETERS, 0) == 0x10ec5505) {-- 1.7.9.5
-- David Henningsson, Canonical Ltd. https://launchpad.net/~diwic
Yes, DSP could be connected to any codecs. Because Intel use alc282 codec. So, we patched alc269 variants now.
----- Original Message ----- From: "Takashi Iwai" tiwai@suse.de To: "David Henningsson" david.henningsson@canonical.com Cc: alsa-devel@alsa-project.org; mengdong.lin@intel.com; "Kailang" kailang@realtek.com Sent: Monday, July 15, 2013 5:26 PM Subject: Re: [PATCH] ALSA: hda - Fix error accessing non-existent node for Realtek codecs
At Mon, 15 Jul 2013 10:58:16 +0200, David Henningsson wrote:
On 07/15/2013 10:55 AM, Takashi Iwai wrote:
At Mon, 15 Jul 2013 10:20:52 +0200, David Henningsson wrote:
A recent commit caused my hda-emu based test tool to complain about accessing nodes that don't exist. This simple test works around this.
Signed-off-by: David Henningsson david.henningsson@canonical.com
sound/pci/hda/patch_realtek.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
I don't have ALC5505 hardware here, no alsa-info to look at, and I don't know what it is. Therefore it would be good with some confirmation that this patch does not break such hardware, which could be the case if the Realtek codec breaks the HDA spec by having "hidden" nodes.
It seems that ALC5505 itself doesn't appear in the codec information but it appears transparent to the real codec behind it. So the node 0x51 doesn't exist in the widget list of the codec, and your patch will break.
I suspected that, but without alsa-info there was no way to tell if this was the case or not.
we may need to patch hda-emu instead...
Okay. Also, is there a way to limit the effect here, like, what codec (or codec variants) have this secret 0x51 node? Right now it's being tested for most of ALC2xx codecs.
I guess this won't be limited to any codec type. The DSP itself seems transparent, so it could be connected to any codec.
Right now, we patched alc269 variants because they are only real cases, so far.
Takashi
Takashi
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 8bd2261..ca73f10 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3844,7 +3844,8 @@ static int patch_alc269(struct hda_codec *codec) break; }
- if (snd_hda_codec_read(codec, 0x51, 0, AC_VERB_PARAMETERS, 0) ==
0x10ec5505) {
- if (codec->num_nodes > 0x51 &&
snd_hda_codec_read(codec, 0x51, 0, AC_VERB_PARAMETERS, 0) ==0x10ec5505) { spec->has_alc5505_dsp = true; spec->init_hook = alc5505_dsp_init; } -- 1.7.9.5
-- David Henningsson, Canonical Ltd. https://launchpad.net/~diwic
------Please consider the environment before printing this e-mail.
On 07/15/2013 11:33 AM, Kailang wrote:
Yes, DSP could be connected to any codecs. Because Intel use alc282 codec. So, we patched alc269 variants now.
Thanks for the clarification. Will the DSP always be connected to node 0x51 regardless of codec, or can this number vary between codecs too?
----- Original Message ----- From: "Takashi Iwai" tiwai@suse.de To: "David Henningsson" david.henningsson@canonical.com Cc: alsa-devel@alsa-project.org; mengdong.lin@intel.com; "Kailang" kailang@realtek.com Sent: Monday, July 15, 2013 5:26 PM Subject: Re: [PATCH] ALSA: hda - Fix error accessing non-existent node for Realtek codecs
At Mon, 15 Jul 2013 10:58:16 +0200, David Henningsson wrote:
On 07/15/2013 10:55 AM, Takashi Iwai wrote:
At Mon, 15 Jul 2013 10:20:52 +0200, David Henningsson wrote:
A recent commit caused my hda-emu based test tool to complain about accessing nodes that don't exist. This simple test works around this.
Signed-off-by: David Henningsson david.henningsson@canonical.com
sound/pci/hda/patch_realtek.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
I don't have ALC5505 hardware here, no alsa-info to look at, and I don't know what it is. Therefore it would be good with some confirmation that
this >> patch
does not break such hardware, which could be the case if the
Realtek >> codec
breaks the HDA spec by having "hidden" nodes.
It seems that ALC5505 itself doesn't appear in the codec information but it appears transparent to the real codec behind it. So the node 0x51 doesn't exist in the widget list of the codec, and your patch will break.
I suspected that, but without alsa-info there was no way to tell if this was the case or not.
we may need to patch hda-emu instead...
Okay. Also, is there a way to limit the effect here, like, what codec (or codec variants) have this secret 0x51 node? Right now it's being tested for most of ALC2xx codecs.
I guess this won't be limited to any codec type. The DSP itself seems transparent, so it could be connected to any codec.
Right now, we patched alc269 variants because they are only real cases, so far.
Takashi
Takashi
diff --git a/sound/pci/hda/patch_realtek.c >>
b/sound/pci/hda/patch_realtek.c
index 8bd2261..ca73f10 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3844,7 +3844,8 @@ static int patch_alc269(struct hda_codec *codec) break; }
- if (snd_hda_codec_read(codec, 0x51, 0, AC_VERB_PARAMETERS, 0) ==
0x10ec5505) {
- if (codec->num_nodes > 0x51 &&
snd_hda_codec_read(codec, 0x51, 0, AC_VERB_PARAMETERS, 0) ==0x10ec5505) { spec->has_alc5505_dsp = true; spec->init_hook = alc5505_dsp_init; } -- 1.7.9.5
-- David Henningsson, Canonical Ltd. https://launchpad.net/~diwic
------Please consider the environment before printing this e-mail.
participants (3)
-
David Henningsson -
Kailang -
Takashi Iwai