[ALSA] ac97 - fix microphone and line_in selection logic

This patch fixes the Microphone and LINE_IN select logic for
Analog Devices surround codecs with shared jacks.  The existing
code can never utilize the shared jacks for Microphone and LINE_IN
due to the reversed jack selection logic.  The patched code
correctly selects the shared jack for input if the 'Channel Mode'
selector does not specify that the jack is to be used for output.
Specifically, in '2ch' mode the Center/LFE jack is used for
microphone input and the Surround jack is used for LINE_IN,
in '4ch' mode the Center/LFE jack is used for microphone input
and the Surround jack is used for output, and in '6ch' mode
both jacks are used for output.

Signed-off-by: Randy Cushman <rcushman_linux@earthlink.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

sound/pci/ac97/ac97_patch.c

@@ -190,14 +190,28 @@ static inline int is_clfe_on(struct snd_ac97 *ac97)
 	return ac97->channel_mode >= 2;
 }
 
+/* system has shared jacks with surround out enabled */
+static inline int is_shared_surrout(struct snd_ac97 *ac97)
+{
+	return !ac97->indep_surround && is_surround_on(ac97);
+}
+
+/* system has shared jacks with center/lfe out enabled */
+static inline int is_shared_clfeout(struct snd_ac97 *ac97)
+{
+	return !ac97->indep_surround && is_clfe_on(ac97);
+}
+
+/* system has shared jacks with line in enabled */
 static inline int is_shared_linein(struct snd_ac97 *ac97)
 {
-	return ! ac97->indep_surround && is_surround_on(ac97);
+	return !ac97->indep_surround && !is_surround_on(ac97);
 }
 
+/* system has shared jacks with mic in enabled */
 static inline int is_shared_micin(struct snd_ac97 *ac97)
 {
-	return ! ac97->indep_surround && is_clfe_on(ac97);
+	return !ac97->indep_surround && !is_clfe_on(ac97);
 }
 
 
@@ -2017,12 +2031,12 @@ static void alc650_update_jacks(struct snd_ac97 *ac97)
 {
 	int shared;
 	
-	/* shared Line-In */
-	shared = is_shared_linein(ac97);
+	/* shared Line-In / Surround Out */
+	shared = is_shared_surrout(ac97);
 	snd_ac97_update_bits(ac97, AC97_ALC650_MULTICH, 1 << 9,
 			     shared ? (1 << 9) : 0);
-	/* update shared Mic */
-	shared = is_shared_micin(ac97);
+	/* update shared Mic In / Center/LFE Out */
+	shared = is_shared_clfeout(ac97);
 	/* disable/enable vref */
 	snd_ac97_update_bits(ac97, AC97_ALC650_CLOCK, 1 << 12,
 			     shared ? (1 << 12) : 0);
@@ -2152,12 +2166,12 @@ static void alc655_update_jacks(struct snd_ac97 *ac97)
 {
 	int shared;
 	
-	/* shared Line-In */
-	shared = is_shared_linein(ac97);
+	/* shared Line-In / Surround Out */
+	shared = is_shared_surrout(ac97);
 	ac97_update_bits_page(ac97, AC97_ALC650_MULTICH, 1 << 9,
 			      shared ? (1 << 9) : 0, 0);
-	/* update shared mic */
-	shared = is_shared_micin(ac97);
+	/* update shared Mic In / Center/LFE Out */
+	shared = is_shared_clfeout(ac97);
 	/* misc control; vrefout disable */
 	snd_ac97_update_bits(ac97, AC97_ALC650_CLOCK, 1 << 12,
 			     shared ? (1 << 12) : 0);
@@ -2301,16 +2315,16 @@ static void alc850_update_jacks(struct snd_ac97 *ac97)
 {
 	int shared;
 	
-	/* shared Line-In */
-	shared = is_shared_linein(ac97);
+	/* shared Line-In / Surround Out */
+	shared = is_shared_surrout(ac97);
 	/* SURR 1kOhm (bit4), Amp (bit5) */
 	snd_ac97_update_bits(ac97, AC97_ALC850_MISC1, (1<<4)|(1<<5),
 			     shared ? (1<<5) : (1<<4));
 	/* LINE-IN = 0, SURROUND = 2 */
 	snd_ac97_update_bits(ac97, AC97_ALC850_JACK_SELECT, 7 << 12,
 			     shared ? (2<<12) : (0<<12));
-	/* update shared mic */
-	shared = is_shared_micin(ac97);
+	/* update shared Mic In / Center/LFE Out */
+	shared = is_shared_clfeout(ac97);
 	/* Vref disable (bit12), 1kOhm (bit13) */
 	snd_ac97_update_bits(ac97, AC97_ALC850_MISC1, (1<<12)|(1<<13),
 			     shared ? (1<<12) : (1<<13));
@@ -2383,9 +2397,9 @@ int patch_alc850(struct snd_ac97 *ac97)
  */
 static void cm9738_update_jacks(struct snd_ac97 *ac97)
 {
-	/* shared Line-In */
+	/* shared Line-In / Surround Out */
 	snd_ac97_update_bits(ac97, AC97_CM9738_VENDOR_CTRL, 1 << 10,
-			     is_shared_linein(ac97) ? (1 << 10) : 0);
+			     is_shared_surrout(ac97) ? (1 << 10) : 0);
 }
 
 static const struct snd_kcontrol_new snd_ac97_cm9738_controls[] = {
@@ -2467,12 +2481,12 @@ static const struct snd_kcontrol_new snd_ac97_cm9739_controls_spdif[] = {
 
 static void cm9739_update_jacks(struct snd_ac97 *ac97)
 {
-	/* shared Line-In */
+	/* shared Line-In / Surround Out */
 	snd_ac97_update_bits(ac97, AC97_CM9739_MULTI_CHAN, 1 << 10,
-			     is_shared_linein(ac97) ? (1 << 10) : 0);
-	/* shared Mic */
+			     is_shared_surrout(ac97) ? (1 << 10) : 0);
+	/* shared Mic In / Center/LFE Out **/
 	snd_ac97_update_bits(ac97, AC97_CM9739_MULTI_CHAN, 0x3000,
-			     is_shared_micin(ac97) ? 0x1000 : 0x2000);
+			     is_shared_clfeout(ac97) ? 0x1000 : 0x2000);
 }
 
 static const struct snd_kcontrol_new snd_ac97_cm9739_controls[] = {
@@ -2584,8 +2598,8 @@ static void cm9761_update_jacks(struct snd_ac97 *ac97)
 
 	val |= surr_on[ac97->spec.dev_flags][is_surround_on(ac97)];
 	val |= clfe_on[ac97->spec.dev_flags][is_clfe_on(ac97)];
-	val |= surr_shared[ac97->spec.dev_flags][is_shared_linein(ac97)];
-	val |= clfe_shared[ac97->spec.dev_flags][is_shared_micin(ac97)];
+	val |= surr_shared[ac97->spec.dev_flags][is_shared_surrout(ac97)];
+	val |= clfe_shared[ac97->spec.dev_flags][is_shared_clfeout(ac97)];
 
 	snd_ac97_update_bits(ac97, AC97_CM9761_MULTI_CHAN, 0x3c88, val);
 }
@@ -2832,12 +2846,12 @@ int patch_vt1617a(struct snd_ac97 * ac97)
  */
 static void it2646_update_jacks(struct snd_ac97 *ac97)
 {
-	/* shared Line-In */
+	/* shared Line-In / Surround Out */
 	snd_ac97_update_bits(ac97, 0x76, 1 << 9,
-			     is_shared_linein(ac97) ? (1<<9) : 0);
-	/* shared Mic */
+			     is_shared_surrout(ac97) ? (1<<9) : 0);
+	/* shared Mic / Center/LFE Out */
 	snd_ac97_update_bits(ac97, 0x76, 1 << 10,
-			     is_shared_micin(ac97) ? (1<<10) : 0);
+			     is_shared_clfeout(ac97) ? (1<<10) : 0);
 }
 
 static const struct snd_kcontrol_new snd_ac97_controls_it2646[] = {