linux-kernel - Re: snd_hda_intel 2.6.24-rc2 bug: interrupts don't always work on Lenovo X60s

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Date:	Tue, 13 Nov 2007 04:43:05 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Roland Dreier <rdreier@...co.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: snd_hda_intel 2.6.24-rc2 bug: interrupts don't always work on Lenovo X60s

At Mon, 12 Nov 2007 10:46:40 -0800,
Roland Dreier wrote:
> 
>  > >     [ 2311.759856] ACPI: PCI Interrupt 0000:00:1b.0[B] -> GSI 17 (level, low) -> IRQ 21
>  > >     [ 2311.759866] hda_intel: probe_mask set to 0x1 for device 17aa:2010
>  > >     [ 2311.759886] PCI: Setting latency timer of device 0000:00:1b.0 to 64
>  > >     [ 2312.911309] hda_intel: azx_get_response timeout, switching to polling mode: last cmd=0x003f000c
>  > 
>  > Hm, strange, NID 0x03 shouldn't be accessed via AD1981 codec, at
>  > least, thinkpad model.  Did you enable CONFIG_SND_HDA_CODEC_ANALOG?
>  > Otherwise it won't work.
> 
> Yes, I have
> 
>     CONFIG_SND_HDA_CODEC_ANALOG=y
> 
> in my .config.
> 
> By the way, the "polling mode" seems to work OK: I still get normal
> playback of music etc.

Yes, the polling mode should work in most cases, too.

Anyway, could you try the patch below?  As far as I see, it's the only
part that may access PINCAP verb for that NID.


thanks,

Takashi

---

diff -r cd6cede1eca4 sound/pci/hda/hda_codec.c
--- a/sound/pci/hda/hda_codec.c	Mon Nov 12 14:55:19 2007 +0000
+++ b/sound/pci/hda/hda_codec.c	Tue Nov 13 08:28:48 2007 +0100
@@ -1626,19 +1626,26 @@ static void hda_set_power_state(struct h
 
 	nid = codec->start_nid;
 	for (i = 0; i < codec->num_nodes; i++, nid++) {
-		if (get_wcaps(codec, nid) & AC_WCAP_POWER) {
-			unsigned int pincap;
-			/*
-			 * don't power down the widget if it controls eapd
-			 * and EAPD_BTLENABLE is set.
-			 */
-			pincap = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
-			if (pincap & AC_PINCAP_EAPD) {
-				int eapd = snd_hda_codec_read(codec, nid,
-					0, AC_VERB_GET_EAPD_BTLENABLE, 0);
-				eapd &= 0x02;
-				if (power_state == AC_PWRST_D3 && eapd)
-					continue;
+		unsigned int wcaps = get_wcaps(codec, nid);
+		if (wcaps & AC_WCAP_POWER) {
+			unsigned int wid_type = (wcaps & AC_WCAP_TYPE) >>
+				AC_WCAP_TYPE_SHIFT;
+			if (wid_type == AC_WID_PIN) {
+				unsigned int pincap;
+				/*
+				 * don't power down the widget if it controls
+				 * eapd and EAPD_BTLENABLE is set.
+				 */
+				pincap = snd_hda_param_read(codec, nid,
+							    AC_PAR_PIN_CAP);
+				if (pincap & AC_PINCAP_EAPD) {
+					int eapd = snd_hda_codec_read(codec,
+						nid, 0,
+						AC_VERB_GET_EAPD_BTLENABLE, 0);
+					eapd &= 0x02;
+					if (power_state == AC_PWRST_D3 && eapd)
+						continue;
+				}
 			}
 			snd_hda_codec_write(codec, nid, 0,
 					    AC_VERB_SET_POWER_STATE,
-
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