ALSA: opti93x: set MC indirect registers base from PnP data

The PnP data on the OPTI931 and OPTI933 contains io port
range for the MC indirect registers. Use the PnP range
instead of hardwired value 0xE0E.

Also, request region of MC indirect registers so it is
marked as used to other drivers (this was missing previously).
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/isa/opti9xx/opti92x-ad1848.c

@@ -135,6 +135,8 @@ struct snd_opti9xx {
 	unsigned long mc_base_size;
 #ifdef OPTi93X
 	unsigned long mc_indir_index;
+	unsigned long mc_indir_size;
+	struct resource *res_mc_indir;
 	struct snd_wss *codec;
 #endif	/* OPTi93X */
 	unsigned long pwd_reg;
@@ -231,7 +233,10 @@ static int __devinit snd_opti9xx_init(struct snd_opti9xx *chip,
 	case OPTi9XX_HW_82C931:
 	case OPTi9XX_HW_82C933:
 		chip->mc_base = (hardware == OPTi9XX_HW_82C930) ? 0xf8f : 0xf8d;
+		if (!chip->mc_indir_index) {
 			chip->mc_indir_index = 0xe0e;
+			chip->mc_indir_size = 2;
+		}
 		chip->password = 0xe4;
 		chip->pwd_reg = 0;
 		break;
@@ -560,60 +565,72 @@ static irqreturn_t snd_opti93x_interrupt(int irq, void *dev_id)
 
 #endif /* OPTi93X */
 
-static int __devinit snd_card_opti9xx_detect(struct snd_card *card,
-					     struct snd_opti9xx *chip)
+static int __devinit snd_opti9xx_read_check(struct snd_opti9xx *chip)
 {
-	int i, err;
-
-#ifndef OPTi93X
-	for (i = OPTi9XX_HW_82C928; i < OPTi9XX_HW_82C930; i++) {
 	unsigned char value;
+#ifdef OPTi93X
+	unsigned long flags;
+#endif
 
-		if ((err = snd_opti9xx_init(chip, i)) < 0)
-			return err;
-
-		if ((chip->res_mc_base = request_region(chip->mc_base, chip->mc_base_size, "OPTi9xx MC")) == NULL)
-			continue;
-
+	chip->res_mc_base = request_region(chip->mc_base, chip->mc_base_size,
+					   "OPTi9xx MC");
+	if (chip->res_mc_base == NULL)
+		return -EBUSY;
+#ifndef OPTi93X
 	value = snd_opti9xx_read(chip, OPTi9XX_MC_REG(1));
-		if ((value != 0xff) && (value != inb(chip->mc_base + 1)))
+	if (value != 0xff && value != inb(chip->mc_base + OPTi9XX_MC_REG(1)))
 		if (value == snd_opti9xx_read(chip, OPTi9XX_MC_REG(1)))
-				return 1;
-
-		release_and_free_resource(chip->res_mc_base);
-		chip->res_mc_base = NULL;
-
-	}
+			return 0;
 #else	/* OPTi93X */
-	for (i = OPTi9XX_HW_82C931; i >= OPTi9XX_HW_82C930; i--) {
-		unsigned long flags;
-		unsigned char value;
-
-		if ((err = snd_opti9xx_init(chip, i)) < 0)
-			return err;
-
-		if ((chip->res_mc_base = request_region(chip->mc_base, chip->mc_base_size, "OPTi9xx MC")) == NULL)
-			continue;
+	chip->res_mc_indir = request_region(chip->mc_indir_index,
+					    chip->mc_indir_size,
+					    "OPTi93x MC");
+	if (chip->res_mc_indir == NULL)
+		return -EBUSY;
 
 	spin_lock_irqsave(&chip->lock, flags);
 	outb(chip->password, chip->mc_base + chip->pwd_reg);
-		outb(((chip->mc_indir_index & (1 << 8)) >> 4) |
-			((chip->mc_indir_index & 0xf0) >> 4), chip->mc_base);
+	outb(((chip->mc_indir_index & 0x1f0) >> 4), chip->mc_base);
 	spin_unlock_irqrestore(&chip->lock, flags);
 
 	value = snd_opti9xx_read(chip, OPTi9XX_MC_REG(7));
 	snd_opti9xx_write(chip, OPTi9XX_MC_REG(7), 0xff - value);
 	if (snd_opti9xx_read(chip, OPTi9XX_MC_REG(7)) == 0xff - value)
-			return 1;
+		return 0;
 
+	release_and_free_resource(chip->res_mc_indir);
+	chip->res_mc_indir = NULL;
+#endif	/* OPTi93X */
 	release_and_free_resource(chip->res_mc_base);
 	chip->res_mc_base = NULL;
-	}
-#endif	/* OPTi93X */
 
 	return -ENODEV;
 }
 
+static int __devinit snd_card_opti9xx_detect(struct snd_card *card,
+					     struct snd_opti9xx *chip)
+{
+	int i, err;
+
+#ifndef OPTi93X
+	for (i = OPTi9XX_HW_82C928; i < OPTi9XX_HW_82C930; i++) {
+#else
+	for (i = OPTi9XX_HW_82C931; i >= OPTi9XX_HW_82C930; i--) {
+#endif
+		err = snd_opti9xx_init(chip, i);
+		if (err < 0)
+			return err;
+
+		err = snd_opti9xx_read_check(chip);
+		if (err == 0)
+			return 1;
+#ifdef OPTi93X
+		chip->mc_indir_index = 0;
+#endif
+	}
+	return -ENODEV;
+}
+
 #ifdef CONFIG_PNP
 static int __devinit snd_card_opti9xx_pnp(struct snd_opti9xx *chip,
 					  struct pnp_card_link *card,
@@ -639,6 +656,8 @@ static int __devinit snd_card_opti9xx_pnp(struct snd_opti9xx *chip,
 #ifdef OPTi93X
 	port = pnp_port_start(pdev, 0) - 4;
 	fm_port = pnp_port_start(pdev, 1) + 8;
+	chip->mc_indir_index = pnp_port_start(pdev, 3) + 2;
+	chip->mc_indir_size = pnp_port_len(pdev, 3) - 2;
 #else
 	if (pid->driver_data != 0x0924)
 		port = pnp_port_start(pdev, 1);
@@ -677,6 +696,7 @@ static void snd_card_opti9xx_free(struct snd_card *card)
 			disable_irq(codec->irq);
 			free_irq(codec->irq, codec);
 		}
+		release_and_free_resource(chip->res_mc_indir);
 #endif
 		release_and_free_resource(chip->res_mc_base);
 	}
@@ -696,11 +716,6 @@ static int __devinit snd_opti9xx_probe(struct snd_card *card)
 	struct snd_rawmidi *rmidi;
 	struct snd_hwdep *synth;
 
-	if (! chip->res_mc_base &&
-	    (chip->res_mc_base = request_region(chip->mc_base, chip->mc_base_size,
-						"OPTi9xx MC")) == NULL)
-		return -ENOMEM;
-
 #if defined(CS4231) || defined(OPTi93X)
 	xdma2 = dma2;
 #else
@@ -954,6 +969,13 @@ static int __devinit snd_opti9xx_pnp_probe(struct pnp_card_link *pcard,
 	}
 	if (hw <= OPTi9XX_HW_82C930)
 		chip->mc_base -= 0x80;
+
+	error = snd_opti9xx_read_check(chip);
+	if (error) {
+		snd_printk(KERN_ERR "OPTI chip not found\n");
+		snd_card_free(card);
+		return error;
+	}
 	snd_card_set_dev(card, &pcard->card->dev);
 	if ((error = snd_opti9xx_probe(card)) < 0) {
 		snd_card_free(card);