[PATCH] [UBUNTU:sound] Add Jack Sense blacklist for ThinkPads

[crimsun at fungus.sh.nu]

UpstreamStatus: Added in upstream pci/ac97/ac97_patch.c r1.104

Certain devices must not have jack sense controls created (ThinkPad
models, mostly). Takashi Iwai added a blacklist to suppress creation of
such controls on ThinkPad models T42p/R50p. I've extended the blacklist
to cover the ThinkPad X41-2527.

Signed-off-by: Daniel T Chen <crimsun at ubuntu.com>

---

 sound/pci/ac97/ac97_patch.c |   50 +++++++++++++++++++++++++++++++++----------
 1 files changed, 38 insertions(+), 12 deletions(-)

a70e814a5b1633cc50cab48147719d7fb7a72f89
diff --git a/sound/pci/ac97/ac97_patch.c b/sound/pci/ac97/ac97_patch.c
index db75e2c..f4eb78c 100644
--- a/sound/pci/ac97/ac97_patch.c
+++ b/sound/pci/ac97/ac97_patch.c
@@ -1621,8 +1621,28 @@ static const snd_kcontrol_new_t snd_ac97
 	AC97_SINGLE("Line Jack Sense", AC97_AD_JACK_SPDIF, 12, 1, 0),
 };
 
+/* black list to avoid HP/Line jack-sense controls
+ * (SS vendor << 16 | device)
+ */
+static unsigned int ad1981_jacks_blacklist[] = {
+	0x10140554, /* Thinkpad T42p/R50p */
+	0x10140581, /* Thinkpad X41-2527 */
+	0 /* end */
+};
+
+static int check_list(ac97_t * ac97, const unsigned int * list)
+{
+	u32 subid = ((u32)ac97->subsystem_vendor << 16) | ac97->subsystem_device;
+	for (; *list; list++)
+		if (*list == subid)
+			return 1;
+	return 0;
+}
+
 static int patch_ad1981a_specific(ac97_t * ac97)
 {
+	if (check_list(ac97, ad1981_jacks_blacklist))
+		return 0;
 	return patch_build_controls(ac97, snd_ac97_ad1981x_jack_sense,
 				    ARRAY_SIZE(snd_ac97_ad1981x_jack_sense));
 }
@@ -1635,22 +1655,26 @@ static struct snd_ac97_build_ops patch_a
 #endif
 };
 
+/* white list to enable HP jack-sense bits
+ * (SS vendor << 16 | device)
+ */
+static unsigned int ad1981_jacks_whitelist[] = {
+	0x0e11005a, /* HP nc4000/4010 */
+	0x103c0890, /* HP nc6000 */
+	0x103c0938, /* HP nc4220 */
+	0x103c099c, /* HP nx6110 */
+	0x103c0944, /* HP nc6220 */
+	0x103c0934, /* HP nc8220 */
+	0x103c006d, /* HP nx9105 */
+	0x17340088, /* FSC Scenic-W */
+	0 /* end */
+};
+
 static void check_ad1981_hp_jack_sense(ac97_t *ac97)
 {
-	u32 subid = ((u32)ac97->subsystem_vendor << 16) | ac97->subsystem_device;
-	switch (subid) {
-	case 0x0e11005a: /* HP nc4000/4010 */
-	case 0x103c0938: /* HP nc4220 */
-	case 0x103c0890: /* HP nc6000 */
-	case 0x103c099c: /* HP nx6110 */
-	case 0x103c0944: /* HP nc6220 */
-	case 0x103c0934: /* HP nc8220 */
-	case 0x103c006d: /* HP nx9105 */
-	case 0x17340088: /* FSC Scenic-W */
+	if (check_list(ac97, ad1981_jacks_whitelist))
 		/* enable headphone jack sense */
 		snd_ac97_update_bits(ac97, AC97_AD_JACK_SPDIF, 1<<11, 1<<11);
-		break;
-	}
 }
 
 int patch_ad1981a(ac97_t *ac97)
@@ -1672,6 +1696,8 @@ static int patch_ad1981b_specific(ac97_t
 
 	if ((err = patch_build_controls(ac97, &snd_ac97_ad198x_2cmic, 1)) < 0)
 		return err;
+	if (check_list(ac97, ad1981_jacks_blacklist))
+		return 0;
 	return patch_build_controls(ac97, snd_ac97_ad1981x_jack_sense,
 				    ARRAY_SIZE(snd_ac97_ad1981x_jack_sense));
 }
-- 
1.1.3

-- 
Daniel T. Chen            crimsun at ubuntu.com
GPG key:   www.sh.nu/~crimsun/pubkey.gpg.asc
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