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| author | Daniel Mack <daniel@caiaq.de> | 2010-06-16 17:57:31 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2010-06-23 16:10:23 +0200 |
| commit | 3d8d4dcfd423b01ef7ea7c3c97720764b7adb6df (patch) | |
| tree | 4bb52394ecfe1f2bda274ab6af3dbe1be9d7bbf2 /sound/usb/clock.c | |
| parent | ALSA: usb-audio: move and add some comments (diff) | |
| download | linux-3d8d4dcfd423b01ef7ea7c3c97720764b7adb6df.tar.xz linux-3d8d4dcfd423b01ef7ea7c3c97720764b7adb6df.zip | |
ALSA: usb-audio: simplify control interface access
As the control interface is now carried in struct snd_usb_audio, we can
simplify the API a little and also drop the private ctrlif field from
struct usb_mixer_interface.
Also remove a left-over function prototype in pcm.h.
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/clock.c')
| -rw-r--r-- | sound/usb/clock.c | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/sound/usb/clock.c b/sound/usb/clock.c index 7279d6190875..66bd1574d80b 100644 --- a/sound/usb/clock.c +++ b/sound/usb/clock.c @@ -121,7 +121,6 @@ static bool uac_clock_source_is_valid(struct snd_usb_audio *chip, int source_id) } static int __uac_clock_find_source(struct snd_usb_audio *chip, - struct usb_host_interface *host_iface, int entity_id, unsigned long *visited) { struct uac_clock_source_descriptor *source; @@ -138,11 +137,11 @@ static int __uac_clock_find_source(struct snd_usb_audio *chip, } /* first, see if the ID we're looking for is a clock source already */ - source = snd_usb_find_clock_source(host_iface, entity_id); + source = snd_usb_find_clock_source(chip->ctrl_intf, entity_id); if (source) return source->bClockID; - selector = snd_usb_find_clock_selector(host_iface, entity_id); + selector = snd_usb_find_clock_selector(chip->ctrl_intf, entity_id); if (selector) { int ret; @@ -162,16 +161,15 @@ static int __uac_clock_find_source(struct snd_usb_audio *chip, return -EINVAL; } - return __uac_clock_find_source(chip, host_iface, - selector->baCSourceID[ret-1], + return __uac_clock_find_source(chip, selector->baCSourceID[ret-1], visited); } /* FIXME: multipliers only act as pass-thru element for now */ - multiplier = snd_usb_find_clock_multiplier(host_iface, entity_id); + multiplier = snd_usb_find_clock_multiplier(chip->ctrl_intf, entity_id); if (multiplier) - return __uac_clock_find_source(chip, host_iface, - multiplier->bCSourceID, visited); + return __uac_clock_find_source(chip, multiplier->bCSourceID, + visited); return -EINVAL; } @@ -187,13 +185,11 @@ static int __uac_clock_find_source(struct snd_usb_audio *chip, * * Returns the clock source UnitID (>=0) on success, or an error. */ -int snd_usb_clock_find_source(struct snd_usb_audio *chip, - struct usb_host_interface *host_iface, - int entity_id) +int snd_usb_clock_find_source(struct snd_usb_audio *chip, int entity_id) { DECLARE_BITMAP(visited, 256); memset(visited, 0, sizeof(visited)); - return __uac_clock_find_source(chip, host_iface, entity_id, visited); + return __uac_clock_find_source(chip, entity_id, visited); } static int set_sample_rate_v1(struct snd_usb_audio *chip, int iface, @@ -251,7 +247,7 @@ static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface, struct usb_device *dev = chip->dev; unsigned char data[4]; int err, crate; - int clock = snd_usb_clock_find_source(chip, chip->ctrl_intf, fmt->clock); + int clock = snd_usb_clock_find_source(chip, fmt->clock); if (clock < 0) return clock; |