From: Takashi Iwai <tiwai@suse.de>
Date: Wed, 14 Nov 2007 13:53:42 +0000 (+0100)
Subject: [ALSA] hda-codec - Check PINCAP only for PIN widgets
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7eba5c9dc3735b14e3df7366671adc15e0c8a048;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

[ALSA] hda-codec - Check PINCAP only for PIN widgets

The recent addition of checking PINCAP for EAPD seems to break some
systems due to unexpected response from the codec chip.  We shouldn't
issue GET_PINCAP verb to non-PIN widgets.  Now checks the widget type
before checking EAPD bit.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index b52f56ffedf4..8cbe3bf1e317 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -1625,19 +1625,26 @@ static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg,
 
 	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,