[lkml]   [2003]   [Jan]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Linux 2.4.21-pre4
Alan Cox wrote:

> On Thu, 2003-01-30 at 17:26, Thomas Davis wrote:
> >>FM801 is still the card not the codec. Somewhere on the FM801 is a
> 48pin AC97 codec,
> >>it may even vary by card version, much like I have intel i810 audio
> with a variety
> >>of codec devices.
> >>
> >
> >Yes, I agree on that.. I'm just trying to get the name "Forte Media
> >FM801" instead of "Unknown" to show up in the ac97 list.
> Why ? How do you even know the codec is made by forte media ?

because the forte driver does this:

[tdavis@lanshark sound]$ grep ac97 forte.c
#include <linux/ac97_codec.h>
spinlock_t ac97_lock;
struct ac97_codec *ac97;
* forte_ac97_wait:
forte_ac97_wait (struct forte_chip *chip)
* forte_ac97_read:
forte_ac97_read (struct ac97_codec *codec, u8 reg)
spin_lock (&chip->ac97_lock);
if (forte_ac97_wait (chip)) {
printk (KERN_ERR PFX "ac97_read: Serial bus busy\n");
if (forte_ac97_wait (chip)) {
printk (KERN_ERR PFX "ac97_read: Bus busy reading reg
printk (KERN_ERR PFX "ac97_read: Invalid data port");
spin_unlock (&chip->ac97_lock);
* forte_ac97_write:
forte_ac97_write (struct ac97_codec *codec, u8 reg, u16 val)
spin_lock (&chip->ac97_lock);
if (forte_ac97_wait (chip)) {
printk (KERN_ERR PFX "ac97_write: Serial bus busy\n");
if (forte_ac97_wait (chip)) {
printk (KERN_ERR PFX "ac97_write: Bus busy after write\n");
spin_unlock (&chip->ac97_lock);
file->private_data = chip->ac97;
struct ac97_codec *codec = (struct ac97_codec *)
if (!create_proc_read_entry("driver/forte/ac97", 0, 0,
ac97_read_proc, forte->ac97)) {
remove_proc_entry ("driver/forte/ac97", NULL);
struct ac97_codec *codec;
if ((codec = kmalloc (sizeof (struct ac97_codec), GFP_KERNEL))
== NULL)
memset (codec, 0, sizeof (struct ac97_codec));
codec->codec_read = forte_ac97_read;
codec->codec_write = forte_ac97_write;
if (ac97_probe_codec (codec) == 0) {
chip->ac97 = codec;
spin_lock_init (&chip->ac97_lock);
unregister_sound_mixer (chip->ac97->dev_mixer);

ie, it has a ac97 support in the driver, it calls ac97_probe_codec?

Is that enough or not?

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:32    [W:0.047 / U:1.356 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site