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-rw-r--r--sound/usb/card.c66
-rw-r--r--sound/usb/midi.c8
-rw-r--r--sound/usb/mixer.c23
-rw-r--r--sound/usb/pcm.c20
-rw-r--r--sound/usb/power.h17
-rw-r--r--sound/usb/usbaudio.h6
6 files changed, 118 insertions, 22 deletions
diff --git a/sound/usb/card.c b/sound/usb/card.c
index 7fa53d91e73b..40722f8711ad 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -65,6 +65,7 @@
#include "pcm.h"
#include "urb.h"
#include "format.h"
+#include "power.h"
MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
MODULE_DESCRIPTION("USB Audio");
@@ -330,6 +331,7 @@ static int snd_usb_audio_create(struct usb_device *dev, int idx,
chip->setup = device_setup[idx];
chip->nrpacks = nrpacks;
chip->async_unlink = async_unlink;
+ chip->probing = 1;
chip->usb_id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
le16_to_cpu(dev->descriptor.idProduct));
@@ -451,6 +453,7 @@ static void *snd_usb_audio_probe(struct usb_device *dev,
goto __error;
}
chip = usb_chip[i];
+ chip->probing = 1;
break;
}
}
@@ -466,6 +469,7 @@ static void *snd_usb_audio_probe(struct usb_device *dev,
goto __error;
}
snd_card_set_dev(chip->card, &intf->dev);
+ chip->pm_intf = intf;
break;
}
if (!chip) {
@@ -505,6 +509,7 @@ static void *snd_usb_audio_probe(struct usb_device *dev,
usb_chip[chip->index] = chip;
chip->num_interfaces++;
+ chip->probing = 0;
mutex_unlock(&register_mutex);
return chip;
@@ -581,6 +586,23 @@ static void usb_audio_disconnect(struct usb_interface *intf)
}
#ifdef CONFIG_PM
+
+int snd_usb_autoresume(struct snd_usb_audio *chip)
+{
+ int err = -ENODEV;
+
+ if (!chip->shutdown && !chip->probing)
+ err = usb_autopm_get_interface(chip->pm_intf);
+
+ return err;
+}
+
+void snd_usb_autosuspend(struct snd_usb_audio *chip)
+{
+ if (!chip->shutdown && !chip->probing)
+ usb_autopm_put_interface(chip->pm_intf);
+}
+
static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message)
{
struct snd_usb_audio *chip = usb_get_intfdata(intf);
@@ -591,18 +613,26 @@ static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message)
if (chip == (void *)-1L)
return 0;
- snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
- if (!chip->num_suspended_intf++) {
- list_for_each(p, &chip->pcm_list) {
- as = list_entry(p, struct snd_usb_stream, list);
- snd_pcm_suspend_all(as->pcm);
- }
-
- list_for_each_entry(mixer, &chip->mixer_list, list) {
- snd_usb_mixer_inactivate(mixer);
- }
+ if (!(message.event & PM_EVENT_AUTO)) {
+ snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
+ if (!chip->num_suspended_intf++) {
+ list_for_each(p, &chip->pcm_list) {
+ as = list_entry(p, struct snd_usb_stream, list);
+ snd_pcm_suspend_all(as->pcm);
+ }
+ }
+ } else {
+ /*
+ * otherwise we keep the rest of the system in the dark
+ * to keep this transparent
+ */
+ if (!chip->num_suspended_intf++)
+ chip->autosuspended = 1;
}
+ list_for_each_entry(mixer, &chip->mixer_list, list)
+ snd_usb_mixer_inactivate(mixer);
+
return 0;
}
@@ -610,6 +640,7 @@ static int usb_audio_resume(struct usb_interface *intf)
{
struct snd_usb_audio *chip = usb_get_intfdata(intf);
struct usb_mixer_interface *mixer;
+ int err = 0;
if (chip == (void *)-1L)
return 0;
@@ -619,12 +650,18 @@ static int usb_audio_resume(struct usb_interface *intf)
* ALSA leaves material resumption to user space
* we just notify and restart the mixers
*/
- list_for_each_entry(mixer, &chip->mixer_list, list)
- snd_usb_mixer_activate(mixer);
+ list_for_each_entry(mixer, &chip->mixer_list, list) {
+ err = snd_usb_mixer_activate(mixer);
+ if (err < 0)
+ goto err_out;
+ }
- snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
+ if (!chip->autosuspended)
+ snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
+ chip->autosuspended = 0;
- return 0;
+err_out:
+ return err;
}
#else
#define usb_audio_suspend NULL
@@ -652,6 +689,7 @@ static struct usb_driver usb_audio_driver = {
.suspend = usb_audio_suspend,
.resume = usb_audio_resume,
.id_table = usb_audio_ids,
+ .supports_autosuspend = 1,
};
static int __init snd_usb_audio_init(void)
diff --git a/sound/usb/midi.c b/sound/usb/midi.c
index db2dc5ffe6dd..b4b39c0b6c9e 100644
--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -54,6 +54,7 @@
#include <sound/asequencer.h>
#include "usbaudio.h"
#include "midi.h"
+#include "power.h"
#include "helper.h"
/*
@@ -1044,6 +1045,7 @@ static int snd_usbmidi_output_open(struct snd_rawmidi_substream *substream)
struct snd_usb_midi* umidi = substream->rmidi->private_data;
struct usbmidi_out_port* port = NULL;
int i, j;
+ int err;
for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
if (umidi->endpoints[i].out)
@@ -1056,6 +1058,9 @@ static int snd_usbmidi_output_open(struct snd_rawmidi_substream *substream)
snd_BUG();
return -ENXIO;
}
+ err = usb_autopm_get_interface(umidi->iface);
+ if (err < 0)
+ return -EIO;
substream->runtime->private_data = port;
port->state = STATE_UNKNOWN;
substream_open(substream, 1);
@@ -1064,7 +1069,10 @@ static int snd_usbmidi_output_open(struct snd_rawmidi_substream *substream)
static int snd_usbmidi_output_close(struct snd_rawmidi_substream *substream)
{
+ struct snd_usb_midi* umidi = substream->rmidi->private_data;
+
substream_open(substream, 0);
+ usb_autopm_put_interface(umidi->iface);
return 0;
}
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 09e59345bb6d..5e4775716607 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -61,6 +61,7 @@
#include "mixer.h"
#include "helper.h"
#include "mixer_quirks.h"
+#include "power.h"
#define MAX_ID_ELEMS 256
@@ -295,16 +296,22 @@ static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, int v
unsigned char buf[2];
int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
int timeout = 10;
+ int err;
+ err = snd_usb_autoresume(cval->mixer->chip);
+ if (err < 0)
+ return -EIO;
while (timeout-- > 0) {
if (snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), request,
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
validx, snd_usb_ctrl_intf(chip) | (cval->id << 8),
buf, val_len, 100) >= val_len) {
*value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
+ snd_usb_autosuspend(cval->mixer->chip);
return 0;
}
}
+ snd_usb_autosuspend(cval->mixer->chip);
snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
request, validx, snd_usb_ctrl_intf(chip) | (cval->id << 8), cval->val_type);
return -EINVAL;
@@ -328,12 +335,18 @@ static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request, int v
memset(buf, 0, sizeof(buf));
+ ret = snd_usb_autoresume(chip) ? -EIO : 0;
+ if (ret)
+ goto error;
+
ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), bRequest,
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
validx, snd_usb_ctrl_intf(chip) | (cval->id << 8),
buf, size, 1000);
+ snd_usb_autosuspend(chip);
if (ret < 0) {
+error:
snd_printk(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
request, validx, snd_usb_ctrl_intf(chip) | (cval->id << 8), cval->val_type);
return ret;
@@ -413,7 +426,7 @@ int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
{
struct snd_usb_audio *chip = cval->mixer->chip;
unsigned char buf[2];
- int val_len, timeout = 10;
+ int val_len, err, timeout = 10;
if (cval->mixer->protocol == UAC_VERSION_1) {
val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
@@ -433,13 +446,19 @@ int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
value_set = convert_bytes_value(cval, value_set);
buf[0] = value_set & 0xff;
buf[1] = (value_set >> 8) & 0xff;
+ err = snd_usb_autoresume(chip);
+ if (err < 0)
+ return -EIO;
while (timeout-- > 0)
if (snd_usb_ctl_msg(chip->dev,
usb_sndctrlpipe(chip->dev, 0), request,
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
validx, snd_usb_ctrl_intf(chip) | (cval->id << 8),
- buf, val_len, 100) >= 0)
+ buf, val_len, 100) >= 0) {
+ snd_usb_autosuspend(chip);
return 0;
+ }
+ snd_usb_autosuspend(chip);
snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n",
request, validx, snd_usb_ctrl_intf(chip) | (cval->id << 8), cval->val_type, buf[0], buf[1]);
return -EINVAL;
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index e3f680526cb5..b8dcbf407bbb 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -32,6 +32,7 @@
#include "helper.h"
#include "pcm.h"
#include "clock.h"
+#include "power.h"
/*
* return the current pcm pointer. just based on the hwptr_done value.
@@ -739,6 +740,9 @@ static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substre
pt = 125 * (1 << fp->datainterval);
ptmin = min(ptmin, pt);
}
+ err = snd_usb_autoresume(subs->stream->chip);
+ if (err < 0)
+ return err;
param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME;
if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
@@ -756,21 +760,21 @@ static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substre
SNDRV_PCM_HW_PARAM_CHANNELS,
param_period_time_if_needed,
-1)) < 0)
- return err;
+ goto rep_err;
if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
hw_rule_channels, subs,
SNDRV_PCM_HW_PARAM_FORMAT,
SNDRV_PCM_HW_PARAM_RATE,
param_period_time_if_needed,
-1)) < 0)
- return err;
+ goto rep_err;
if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
hw_rule_format, subs,
SNDRV_PCM_HW_PARAM_RATE,
SNDRV_PCM_HW_PARAM_CHANNELS,
param_period_time_if_needed,
-1)) < 0)
- return err;
+ goto rep_err;
if (param_period_time_if_needed >= 0) {
err = snd_pcm_hw_rule_add(runtime, 0,
SNDRV_PCM_HW_PARAM_PERIOD_TIME,
@@ -780,11 +784,15 @@ static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substre
SNDRV_PCM_HW_PARAM_RATE,
-1);
if (err < 0)
- return err;
+ goto rep_err;
}
if ((err = snd_usb_pcm_check_knot(runtime, subs)) < 0)
- return err;
+ goto rep_err;
return 0;
+
+rep_err:
+ snd_usb_autosuspend(subs->stream->chip);
+ return err;
}
static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction)
@@ -798,6 +806,7 @@ static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction)
runtime->hw = snd_usb_hardware;
runtime->private_data = subs;
subs->pcm_substream = substream;
+ /* runtime PM is also done there */
return setup_hw_info(runtime, subs);
}
@@ -811,6 +820,7 @@ static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction)
subs->interface = -1;
}
subs->pcm_substream = NULL;
+ snd_usb_autosuspend(subs->stream->chip);
return 0;
}
diff --git a/sound/usb/power.h b/sound/usb/power.h
new file mode 100644
index 000000000000..48ee51dcb71e
--- /dev/null
+++ b/sound/usb/power.h
@@ -0,0 +1,17 @@
+#ifndef __USBAUDIO_POWER_H
+#define __USBAUDIO_POWER_H
+
+#ifdef CONFIG_PM
+int snd_usb_autoresume(struct snd_usb_audio *chip);
+void snd_usb_autosuspend(struct snd_usb_audio *chip);
+#else
+static inline int snd_usb_autoresume(struct snd_usb_audio *chip)
+{
+ return 0;
+}
+static inline void snd_usb_autosuspend(struct snd_usb_audio *chip)
+{
+}
+#endif
+
+#endif /* __USBAUDIO_POWER_H */
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index 6e66fffe87f5..32f2a97f2f14 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -34,10 +34,14 @@ struct snd_usb_audio {
int index;
struct usb_device *dev;
struct snd_card *card;
+ struct usb_interface *pm_intf;
u32 usb_id;
- int shutdown;
struct mutex shutdown_mutex;
+ unsigned int shutdown:1;
+ unsigned int probing:1;
+ unsigned int autosuspended:1;
unsigned int txfr_quirk:1; /* Subframe boundaries on transfers */
+
int num_interfaces;
int num_suspended_intf;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-12 02:47:27 +0000