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ALSA: usb-audio: Simplify snd_usb_init_sample_rate() arguments

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A preliminary change for the later big changes.  This is a minor code
refactoring to drop the unnecessary arguments that can be retrieved in
a different way.

Tested-by: Keith Milner <kamilner@superlative.org>
Tested-by: Dylan Robinson <dylan_robinson@motu.com>
Link: https://lore.kernel.org/r/20201123085347.19667-20-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2020-11-23 09:53:25 +01:00
parent d767aba202
commit 953a446b50
5 changed files with 18 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
sound/usb/clock.c
View File

@ -481,15 +481,18 @@ int snd_usb_clock_find_source(struct snd_usb_audio *chip,
}
}
static int set_sample_rate_v1(struct snd_usb_audio *chip, int iface,
struct usb_host_interface *alts,
static int set_sample_rate_v1(struct snd_usb_audio *chip,
struct audioformat *fmt, int rate)
{
struct usb_device *dev = chip->dev;
struct usb_host_interface *alts;
unsigned int ep;
unsigned char data[3];
int err, crate;
alts = snd_usb_get_host_interface(chip, fmt->iface, fmt->altsetting);
if (!alts)
return -EINVAL;
if (get_iface_desc(alts)->bNumEndpoints < 1)
return -EINVAL;
ep = get_endpoint(alts, 0)->bEndpointAddress;
@ -507,7 +510,7 @@ static int set_sample_rate_v1(struct snd_usb_audio *chip, int iface,
data, sizeof(data));
if (err < 0) {
dev_err(&dev->dev, "%d:%d: cannot set freq %d to ep %#x\n",
iface, fmt->altsetting, rate, ep);
fmt->iface, fmt->altsetting, rate, ep);
return err;
}
@ -525,7 +528,7 @@ static int set_sample_rate_v1(struct snd_usb_audio *chip, int iface,
data, sizeof(data));
if (err < 0) {
dev_err(&dev->dev, "%d:%d: cannot get freq at ep %#x\n",
iface, fmt->altsetting, ep);
fmt->iface, fmt->altsetting, ep);
chip->sample_rate_read_error++;
return 0; /* some devices don't support reading */
}
@ -607,8 +610,7 @@ int snd_usb_set_sample_rate_v2v3(struct snd_usb_audio *chip,
return get_sample_rate_v2v3(chip, fmt->iface, fmt->altsetting, clock);
}
static int set_sample_rate_v2v3(struct snd_usb_audio *chip, int iface,
struct usb_host_interface *alts,
static int set_sample_rate_v2v3(struct snd_usb_audio *chip,
struct audioformat *fmt, int rate)
{
struct usb_device *dev = chip->dev;
@ -632,7 +634,7 @@ static int set_sample_rate_v2v3(struct snd_usb_audio *chip, int iface,
return clock;
}
prev_rate = get_sample_rate_v2v3(chip, iface, fmt->altsetting, clock);
prev_rate = get_sample_rate_v2v3(chip, fmt->iface, fmt->altsetting, clock);
if (prev_rate == rate)
goto validation;
@ -640,7 +642,7 @@ static int set_sample_rate_v2v3(struct snd_usb_audio *chip, int iface,
if (cur_rate < 0) {
usb_audio_err(chip,
"%d:%d: cannot set freq %d (v2/v3): err %d\n",
iface, fmt->altsetting, rate, cur_rate);
fmt->iface, fmt->altsetting, rate, cur_rate);
return cur_rate;
}
@ -657,9 +659,9 @@ static int set_sample_rate_v2v3(struct snd_usb_audio *chip, int iface,
/* Some devices doesn't respond to sample rate changes while the
* interface is active. */
if (rate != prev_rate) {
usb_set_interface(dev, iface, 0);
usb_set_interface(dev, fmt->iface, 0);
snd_usb_set_interface_quirk(chip);
usb_set_interface(dev, iface, fmt->altsetting);
usb_set_interface(dev, fmt->iface, fmt->altsetting);
snd_usb_set_interface_quirk(chip);
}
@ -670,14 +672,13 @@ validation:
return 0;
}
int snd_usb_init_sample_rate(struct snd_usb_audio *chip, int iface,
struct usb_host_interface *alts,
int snd_usb_init_sample_rate(struct snd_usb_audio *chip,
struct audioformat *fmt, int rate)
{
switch (fmt->protocol) {
case UAC_VERSION_1:
default:
return set_sample_rate_v1(chip, iface, alts, fmt, rate);
return set_sample_rate_v1(chip, fmt, rate);
case UAC_VERSION_3:
if (chip->badd_profile >= UAC3_FUNCTION_SUBCLASS_GENERIC_IO) {
@ -688,7 +689,7 @@ int snd_usb_init_sample_rate(struct snd_usb_audio *chip, int iface,
}
fallthrough;
case UAC_VERSION_2:
return set_sample_rate_v2v3(chip, iface, alts, fmt, rate);
return set_sample_rate_v2v3(chip, fmt, rate);
}
}

3
sound/usb/clock.h
View File

@ -2,8 +2,7 @@
#ifndef __USBAUDIO_CLOCK_H
#define __USBAUDIO_CLOCK_H
int snd_usb_init_sample_rate(struct snd_usb_audio *chip, int iface,
struct usb_host_interface *alts,
int snd_usb_init_sample_rate(struct snd_usb_audio *chip,
struct audioformat *fmt, int rate);
int snd_usb_clock_find_source(struct snd_usb_audio *chip,

2
sound/usb/pcm.c
View File

@ -1017,8 +1017,6 @@ static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream)
iface = usb_ifnum_to_if(subs->dev, subs->cur_audiofmt->iface);
alts = &iface->altsetting[subs->cur_audiofmt->altset_idx];
ret = snd_usb_init_sample_rate(subs->stream->chip,
subs->cur_audiofmt->iface,
alts,
subs->cur_audiofmt,
subs->cur_rate);
if (ret < 0)

2
sound/usb/quirks.c
View File

@ -178,7 +178,7 @@ static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
usb_set_interface(chip->dev, fp->iface, 0);
snd_usb_init_pitch(chip, fp->iface, alts, fp);
snd_usb_init_sample_rate(chip, fp->iface, alts, fp, fp->rate_max);
snd_usb_init_sample_rate(chip, fp, fp->rate_max);
return 0;
error:

2
sound/usb/stream.c
View File

@ -1225,7 +1225,7 @@ static int __snd_usb_parse_audio_interface(struct snd_usb_audio *chip,
/* try to set the interface... */
usb_set_interface(chip->dev, iface_no, 0);
snd_usb_init_pitch(chip, iface_no, alts, fp);
snd_usb_init_sample_rate(chip, iface_no, alts, fp, fp->rate_max);
snd_usb_init_sample_rate(chip, fp, fp->rate_max);
usb_set_interface(chip->dev, iface_no, altno);
}
return 0;