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Diffstat (limited to 'sound/usb/pcm.c')
-rw-r--r--sound/usb/pcm.c117
1 files changed, 22 insertions, 95 deletions
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index 2bf0d77d1768..456829882f40 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -31,6 +31,7 @@
#include "urb.h"
#include "helper.h"
#include "pcm.h"
+#include "clock.h"
/*
* return the current pcm pointer. just based on the hwptr_done value.
@@ -120,10 +121,6 @@ static int init_pitch_v1(struct snd_usb_audio *chip, int iface,
ep = get_endpoint(alts, 0)->bEndpointAddress;
- /* if endpoint doesn't have pitch control, bail out */
- if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL))
- return 0;
-
data[0] = 1;
if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
@@ -137,119 +134,49 @@ static int init_pitch_v1(struct snd_usb_audio *chip, int iface,
return 0;
}
-/*
- * initialize the picth control and sample rate
- */
-int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface,
- struct usb_host_interface *alts,
- struct audioformat *fmt)
-{
- struct usb_interface_descriptor *altsd = get_iface_desc(alts);
-
- switch (altsd->bInterfaceProtocol) {
- case UAC_VERSION_1:
- return init_pitch_v1(chip, iface, alts, fmt);
-
- case UAC_VERSION_2:
- /* not implemented yet */
- return 0;
- }
-
- return -EINVAL;
-}
-
-static int set_sample_rate_v1(struct snd_usb_audio *chip, int iface,
- struct usb_host_interface *alts,
- struct audioformat *fmt, int rate)
+static int init_pitch_v2(struct snd_usb_audio *chip, int iface,
+ struct usb_host_interface *alts,
+ struct audioformat *fmt)
{
struct usb_device *dev = chip->dev;
+ unsigned char data[1];
unsigned int ep;
- unsigned char data[3];
- int err, crate;
+ int err;
ep = get_endpoint(alts, 0)->bEndpointAddress;
- /* if endpoint doesn't have sampling rate control, bail out */
- if (!(fmt->attributes & UAC_EP_CS_ATTR_SAMPLE_RATE)) {
- snd_printk(KERN_WARNING "%d:%d:%d: endpoint lacks sample rate attribute bit, cannot set.\n",
- dev->devnum, iface, fmt->altsetting);
- return 0;
- }
- data[0] = rate;
- data[1] = rate >> 8;
- data[2] = rate >> 16;
- if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
- USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
- UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep,
- data, sizeof(data), 1000)) < 0) {
- snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d to ep %#x\n",
- dev->devnum, iface, fmt->altsetting, rate, ep);
- return err;
- }
- if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC_GET_CUR,
- USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN,
- UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep,
- data, sizeof(data), 1000)) < 0) {
- snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq at ep %#x\n",
- dev->devnum, iface, fmt->altsetting, ep);
- return 0; /* some devices don't support reading */
- }
- crate = data[0] | (data[1] << 8) | (data[2] << 16);
- if (crate != rate) {
- snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate);
- // runtime->rate = crate;
- }
-
- return 0;
-}
-
-static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface,
- struct usb_host_interface *alts,
- struct audioformat *fmt, int rate)
-{
- struct usb_device *dev = chip->dev;
- unsigned char data[4];
- int err, crate;
-
- data[0] = rate;
- data[1] = rate >> 8;
- data[2] = rate >> 16;
- data[3] = rate >> 24;
+ data[0] = 1;
if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR,
- USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
- UAC2_CS_CONTROL_SAM_FREQ << 8, chip->clock_id << 8,
- data, sizeof(data), 1000)) < 0) {
- snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d (v2)\n",
- dev->devnum, iface, fmt->altsetting, rate);
- return err;
- }
- if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR,
- USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
- UAC2_CS_CONTROL_SAM_FREQ << 8, chip->clock_id << 8,
+ USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT,
+ UAC2_EP_CS_PITCH << 8, 0,
data, sizeof(data), 1000)) < 0) {
- snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq (v2)\n",
+ snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH (v2)\n",
dev->devnum, iface, fmt->altsetting);
return err;
}
- crate = data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
- if (crate != rate)
- snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate);
return 0;
}
-int snd_usb_init_sample_rate(struct snd_usb_audio *chip, int iface,
- struct usb_host_interface *alts,
- struct audioformat *fmt, int rate)
+/*
+ * initialize the pitch control and sample rate
+ */
+int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface,
+ struct usb_host_interface *alts,
+ struct audioformat *fmt)
{
struct usb_interface_descriptor *altsd = get_iface_desc(alts);
+ /* if endpoint doesn't have pitch control, bail out */
+ if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL))
+ return 0;
+
switch (altsd->bInterfaceProtocol) {
case UAC_VERSION_1:
- return set_sample_rate_v1(chip, iface, alts, fmt, rate);
+ return init_pitch_v1(chip, iface, alts, fmt);
case UAC_VERSION_2:
- return set_sample_rate_v2(chip, iface, alts, fmt, rate);
+ return init_pitch_v2(chip, iface, alts, fmt);
}
return -EINVAL;