[ALSA] Add ac97_quirk option

Documentation,ATIIXP driver
Added ac97_quirk option like intel and via drivers.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Documentation/sound/alsa/ALSA-Configuration.txt

@@ -184,6 +184,8 @@ Module parameters
     Module for ATI IXP 150/200/250 AC97 controllers.
 
     ac97_clock		- AC'97 clock (defalut = 48000)
+    ac97_quirk		- AC'97 workaround for strange hardware
+			  See the description of intel8x0 module for details.
     spdif_aclink	- S/PDIF transfer over AC-link (default = 1)
 
     This module supports up to 8 cards and autoprobe.

sound/pci/atiixp.c

@@ -43,6 +43,7 @@ static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
 static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 48000};
+static char *ac97_quirk[SNDRV_CARDS];
 static int spdif_aclink[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
 
 module_param_array(index, int, NULL, 0444);
@@ -53,6 +54,8 @@ module_param_array(enable, bool, NULL, 0444);
 MODULE_PARM_DESC(enable, "Enable audio part of ATI IXP controller.");
 module_param_array(ac97_clock, int, NULL, 0444);
 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
+module_param_array(ac97_quirk, charp, NULL, 0444);
+MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
 module_param_array(spdif_aclink, bool, NULL, 0444);
 MODULE_PARM_DESC(spdif_aclink, "S/PDIF over AC-link.");
 
@@ -1328,7 +1331,11 @@ static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id, struct pt_regs *r
  * ac97 mixer section
  */
 
-static int __devinit snd_atiixp_mixer_new(atiixp_t *chip, int clock)
+static struct ac97_quirk ac97_quirks[] __devinitdata = {
+	{ } /* terminator */
+};
+
+static int __devinit snd_atiixp_mixer_new(atiixp_t *chip, int clock, const char *quirk_override)
 {
 	ac97_bus_t *pbus;
 	ac97_template_t ac97;
@@ -1375,7 +1382,7 @@ static int __devinit snd_atiixp_mixer_new(atiixp_t *chip, int clock)
 		return -ENODEV;
 	}
 
-	/* snd_ac97_tune_hardware(chip->ac97, ac97_quirks); */
+	snd_ac97_tune_hardware(chip->ac97[0], ac97_quirks, quirk_override);
 
 	return 0;
 }
@@ -1568,7 +1575,7 @@ static int __devinit snd_atiixp_probe(struct pci_dev *pci,
 
 	chip->spdif_over_aclink = spdif_aclink[dev];
 
-	if ((err = snd_atiixp_mixer_new(chip, ac97_clock[dev])) < 0)
+	if ((err = snd_atiixp_mixer_new(chip, ac97_clock[dev], ac97_quirk[dev])) < 0)
 		goto __error;
 
 	if ((err = snd_atiixp_pcm_new(chip)) < 0)