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Driver core: convert sound core to use struct device

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Converts from using struct "class_device" to "struct device" making
everything show up properly in /sys/devices/ with symlinks from the
/sys/class directory.

It also makes the struct sound_card to show up as a "real" device
where all the different sound class devices are placed as childs
and different card attribute files can hang off of. /sys/class/sound is
still a flat directory, but the symlink targets of all devices belonging
to the same card, point the the /sys/devices tree below the new card
device object.

Thanks to Kay for the updates to this patch.

Signed-off-by: Kay Sievers <kay.sievers@novell.com>
Acked-by: Jaroslav Kysela <perex@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman
2006-08-07 22:19:37 -07:00
parent ebf644c462
commit d80f19fab8
6 changed files with 37 additions and 30 deletions
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7
sound/core/pcm.c
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@@ -910,7 +910,8 @@ void snd_pcm_detach_substream(struct snd_pcm_substream *substream)
substream->pstr->substream_opened--;
}
static ssize_t show_pcm_class(struct class_device *class_device, char *buf)
static ssize_t show_pcm_class(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct snd_pcm *pcm;
const char *str;
@@ -921,7 +922,7 @@ static ssize_t show_pcm_class(struct class_device *class_device, char *buf)
[SNDRV_PCM_CLASS_DIGITIZER] = "digitizer",
};
if (! (pcm = class_get_devdata(class_device)) ||
if (! (pcm = dev_get_drvdata(dev)) ||
pcm->dev_class > SNDRV_PCM_CLASS_LAST)
str = "none";
else
@@ -929,7 +930,7 @@ static ssize_t show_pcm_class(struct class_device *class_device, char *buf)
return snprintf(buf, PAGE_SIZE, "%s\n", str);
}
static struct class_device_attribute pcm_attrs =
static struct device_attribute pcm_attrs =
__ATTR(pcm_class, S_IRUGO, show_pcm_class, NULL);
static int snd_pcm_dev_register(struct snd_device *device)