From: Takashi Iwai <tiwai@suse.de>
Subject: ALSA: hda - Allow fixed codec-probe mask
Patch-mainline: 2.6.30-rc1
References: bnc#502733

Some devices have broken BIOS and they don't set the codec probe-bit
properly after cleared by the driver.  This makes the driver skipping
the necessary codec slots.

Since BIOS update isn't always easy, now the semantics of probe_mask
option is changed a bit.  When it contains the bit 8 (0x100), the
lower bits are used to probe that slots regardless of codec-probe bits
returned by the hardware.

For example, probe_mask=0x103 will force to probe the codec slot #0
and #1.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

---
 sound/pci/hda/hda_intel.c |   29 ++++++++++++++++++++++-------
 1 file changed, 22 insertions(+), 7 deletions(-)

--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -373,6 +373,7 @@ struct azx {
 
 	/* HD codec */
 	unsigned short codec_mask;
+	int  codec_probe_mask; /* copied from probe_mask option */
 	struct hda_bus *bus;
 
 	/* CORB/RIRB */
@@ -1222,8 +1223,7 @@ static unsigned int azx_max_codecs[AZX_N
 	[AZX_DRIVER_TERA] = 1,
 };
 
-static int __devinit azx_codec_create(struct azx *chip, const char *model,
-				      unsigned int codec_probe_mask)
+static int __devinit azx_codec_create(struct azx *chip, const char *model)
 {
 	struct hda_bus_template bus_temp;
 	int c, codecs, err;
@@ -1253,7 +1253,7 @@ static int __devinit azx_codec_create(st
 
 	/* First try to probe all given codec slots */
 	for (c = 0; c < max_slots; c++) {
-		if ((chip->codec_mask & (1 << c)) & codec_probe_mask) {
+		if ((chip->codec_mask & (1 << c)) & chip->codec_probe_mask) {
 			if (probe_codec(chip, c) < 0) {
 				/* Some BIOSen give you wrong codec addresses
 				 * that don't exist
@@ -1277,7 +1277,7 @@ static int __devinit azx_codec_create(st
 
 	/* Then create codec instances */
 	for (c = 0; c < max_slots; c++) {
-		if ((chip->codec_mask & (1 << c)) & codec_probe_mask) {
+		if ((chip->codec_mask & (1 << c)) & chip->codec_probe_mask) {
 			struct hda_codec *codec;
 			err = snd_hda_codec_new(chip->bus, c, &codec);
 			if (err < 0)
@@ -2153,23 +2153,38 @@ static struct snd_pci_quirk probe_mask_l
 	SND_PCI_QUIRK(0x17aa, 0x20ac, "Thinkpad X/T/R61", 0x01),
 	/* broken BIOS */
 	SND_PCI_QUIRK(0x1028, 0x20ac, "Dell Studio Desktop", 0x01),
+	/* including bogus ALC268 in slot#2 that conflicts with ALC888 */
+	SND_PCI_QUIRK(0x17c0, 0x4085, "Medion MD96630", 0x01),
+	/* forced codec slots */
+	SND_PCI_QUIRK(0x1046, 0x1262, "ASUS W5F", 0x103),
 	{}
 };
 
+#define AZX_FORCE_CODEC_MASK	0x100
+
 static void __devinit check_probe_mask(struct azx *chip, int dev)
 {
 	const struct snd_pci_quirk *q;
 
-	if (probe_mask[dev] == -1) {
+	chip->codec_probe_mask = probe_mask[dev];
+	if (chip->codec_probe_mask == -1) {
 		q = snd_pci_quirk_lookup(chip->pci, probe_mask_list);
 		if (q) {
 			printk(KERN_INFO
 			       "hda_intel: probe_mask set to 0x%x "
 			       "for device %04x:%04x\n",
 			       q->value, q->subvendor, q->subdevice);
-			probe_mask[dev] = q->value;
+			chip->codec_probe_mask = q->value;
 		}
 	}
+
+	/* check forced option */
+	if (chip->codec_probe_mask != -1 &&
+	    (chip->codec_probe_mask & AZX_FORCE_CODEC_MASK)) {
+		chip->codec_mask = chip->codec_probe_mask & 0xff;
+		printk(KERN_INFO "hda_intel: codec_mask forced to 0x%x\n",
+		       chip->codec_mask);
+	}
 }
 
 
@@ -2407,7 +2422,7 @@ static int __devinit azx_probe(struct pc
 	card->private_data = chip;
 
 	/* create codec instances */
-	err = azx_codec_create(chip, model[dev], probe_mask[dev]);
+	err = azx_codec_create(chip, model[dev]);
 	if (err < 0)
 		goto out_free;