ALSA: hda - Assign smart51 only in the same stack for VIA codecs

The input jacks assigned as the smart51 outputs must be in the same
stack, either rear, front or other.  Also, prefer line-in as the surround
to mic-in.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_via.c

@@ -822,26 +822,6 @@ static void mute_aa_path(struct hda_codec *codec, int mute)
 	}
 }
 
-static bool is_smart51_candidate(struct hda_codec *codec, hda_nid_t pin)
-{
-	struct via_spec *spec = codec->spec;
-	const struct auto_pin_cfg *cfg = &spec->autocfg;
-	int i;
-
-	for (i = 0; i < cfg->num_inputs; i++) {
-		unsigned int defcfg;
-		if (pin != cfg->inputs[i].pin)
-			continue;
-		if (cfg->inputs[i].type > AUTO_PIN_LINE_IN)
-			return false;
-		defcfg = snd_hda_codec_get_pincfg(codec, pin);
-		if (snd_hda_get_input_pin_attr(defcfg) < INPUT_PIN_ATTR_NORMAL)
-			return false;
-		return true;
-	}
-	return false;
-}
-
 static bool is_smart51_pins(struct hda_codec *codec, hda_nid_t pin)
 {
 	struct via_spec *spec = codec->spec;
@@ -1692,21 +1672,38 @@ static void mangle_smart51(struct hda_codec *codec)
 {
 	struct via_spec *spec = codec->spec;
 	struct auto_pin_cfg *cfg = &spec->autocfg;
-	int i, nums = 0;
-
-	for (i = 0; i < cfg->num_inputs; i++) {
-		if (is_smart51_candidate(codec, cfg->inputs[i].pin))
+	struct auto_pin_cfg_item *ins = cfg->inputs;
+	int i, j, nums, attr;
+	int pins[AUTO_CFG_MAX_INS];
+
+	for (attr = INPUT_PIN_ATTR_REAR; attr >= INPUT_PIN_ATTR_NORMAL; attr--) {
+		nums = 0;
+		for (i = 0; i < cfg->num_inputs; i++) {
+			unsigned int def;
+			if (ins[i].type > AUTO_PIN_LINE_IN)
+				continue;
+			def = snd_hda_codec_get_pincfg(codec, ins[i].pin);
+			if (snd_hda_get_input_pin_attr(def) != attr)
+				continue;
+			for (j = 0; j < nums; j++)
+				if (ins[pins[j]].type < ins[i].type) {
+					memmove(pins + j + 1, pins + j,
+						(nums - j - 1) * sizeof(int));
+					break;
+				}
+			pins[j] = i;
 			nums++;
-	}
-	if (cfg->line_outs + nums < 3)
-		return;
-	for (i = 0; i < cfg->num_inputs; i++) {
-		if (!is_smart51_candidate(codec, cfg->inputs[i].pin))
+		}
+		if (cfg->line_outs + nums < 3)
 			continue;
-		spec->smart51_pins[spec->smart51_nums++] = cfg->inputs[i].pin;
-		cfg->line_out_pins[cfg->line_outs++] = cfg->inputs[i].pin;
-		if (cfg->line_outs == 3)
-			break;
+		for (i = 0; i < nums; i++) {
+			hda_nid_t pin = ins[pins[i]].pin;
+			spec->smart51_pins[spec->smart51_nums++] = pin;
+			cfg->line_out_pins[cfg->line_outs++] = pin;
+			if (cfg->line_outs == 3)
+				break;
+		}
+		return;
 	}
 }