diff options
Diffstat (limited to 'sound')
-rw-r--r-- | sound/usb/mixer_scarlett2.c | 70 |
1 files changed, 61 insertions, 9 deletions
diff --git a/sound/usb/mixer_scarlett2.c b/sound/usb/mixer_scarlett2.c index 8390b646c0ae..02c488c80b7e 100644 --- a/sound/usb/mixer_scarlett2.c +++ b/sound/usb/mixer_scarlett2.c @@ -321,6 +321,7 @@ struct scarlett2_notification { void (*func)(struct usb_mixer_interface *mixer); }; +static void scarlett2_notify_ack(struct usb_mixer_interface *mixer); static void scarlett2_notify_sync(struct usb_mixer_interface *mixer); static void scarlett2_notify_dim_mute(struct usb_mixer_interface *mixer); static void scarlett2_notify_monitor(struct usb_mixer_interface *mixer); @@ -343,7 +344,7 @@ static void scarlett2_notify_pcm_input_switch( /* Arrays of notification callback functions */ static const struct scarlett2_notification scarlett2_notifications[] = { - { 0x00000001, NULL }, /* ack, gets ignored */ + { 0x00000001, scarlett2_notify_ack }, { 0x00000008, scarlett2_notify_sync }, { 0x00200000, scarlett2_notify_dim_mute }, { 0x00400000, scarlett2_notify_monitor }, @@ -353,14 +354,14 @@ static const struct scarlett2_notification scarlett2_notifications[] = { }; static const struct scarlett2_notification scarlett3a_notifications[] = { - { 0x00000001, NULL }, /* ack, gets ignored */ + { 0x00000001, scarlett2_notify_ack }, { 0x00800000, scarlett2_notify_input_other }, { 0x01000000, scarlett2_notify_direct_monitor }, { 0, NULL } }; static const struct scarlett2_notification scarlett4_solo_notifications[] = { - { 0x00000001, NULL }, /* ack, gets ignored */ + { 0x00000001, scarlett2_notify_ack }, { 0x00000008, scarlett2_notify_sync }, { 0x00400000, scarlett2_notify_input_air }, { 0x00800000, scarlett2_notify_direct_monitor }, @@ -371,7 +372,7 @@ static const struct scarlett2_notification scarlett4_solo_notifications[] = { }; static const struct scarlett2_notification scarlett4_2i2_notifications[] = { - { 0x00000001, NULL }, /* ack, gets ignored */ + { 0x00000001, scarlett2_notify_ack }, { 0x00000008, scarlett2_notify_sync }, { 0x00200000, scarlett2_notify_input_safe }, { 0x00400000, scarlett2_notify_autogain }, @@ -387,7 +388,7 @@ static const struct scarlett2_notification scarlett4_2i2_notifications[] = { }; static const struct scarlett2_notification scarlett4_4i4_notifications[] = { - { 0x00000001, NULL }, /* ack, gets ignored */ + { 0x00000001, scarlett2_notify_ack }, { 0x00000008, scarlett2_notify_sync }, { 0x00200000, scarlett2_notify_input_safe }, { 0x00400000, scarlett2_notify_autogain }, @@ -942,7 +943,9 @@ struct scarlett2_device_info { struct scarlett2_data { struct usb_mixer_interface *mixer; struct mutex usb_mutex; /* prevent sending concurrent USB requests */ + struct completion cmd_done; struct mutex data_mutex; /* lock access to this data */ + u8 running; u8 hwdep_in_use; u8 selected_flash_segment_id; u8 flash_write_state; @@ -1960,6 +1963,17 @@ static int scarlett2_usb( goto unlock; } + if (!wait_for_completion_timeout(&private->cmd_done, + msecs_to_jiffies(1000))) { + usb_audio_err( + mixer->chip, + "%s USB request timed out, cmd %x\n", + private->series_name, cmd); + + err = -ETIMEDOUT; + goto unlock; + } + /* send a second message to get the response */ err = scarlett2_usb_rx(dev, private->bInterfaceNumber, @@ -6702,6 +6716,18 @@ static void scarlett2_notify_pcm_input_switch(struct usb_mixer_interface *mixer) scarlett2_notify_mux(mixer); } +/* Handle acknowledgement that a command was received; let + * scarlett2_usb() know that it can proceed + */ +static void scarlett2_notify_ack(struct usb_mixer_interface *mixer) +{ + struct scarlett2_data *private = mixer->private_data; + + /* if running == 0, ignore ACKs */ + if (private->running) + complete(&private->cmd_done); +} + /* Interrupt callback */ static void scarlett2_notify(struct urb *urb) { @@ -6718,6 +6744,12 @@ static void scarlett2_notify(struct urb *urb) data = le32_to_cpu(*(__le32 *)urb->transfer_buffer); + /* Ignore notifications except ACK during initialisation. + * ACK is 0x00000001 on every device. + */ + if (private->running < 2) + data &= 1; + while (data && notifications->mask) { if (data & notifications->mask) { data &= ~notifications->mask; @@ -6738,6 +6770,8 @@ requeue: ustatus != -ESHUTDOWN) { urb->dev = mixer->chip->dev; usb_submit_urb(urb, GFP_ATOMIC); + } else { + complete(&private->cmd_done); } } @@ -6889,6 +6923,8 @@ static int scarlett2_init_notify(struct usb_mixer_interface *mixer) transfer_buffer, private->wMaxPacketSize, scarlett2_notify, mixer, private->bInterval); + init_completion(&private->cmd_done); + return usb_submit_urb(mixer->urb, GFP_KERNEL); } @@ -6911,6 +6947,24 @@ static int scarlett2_usb_init(struct usb_mixer_interface *mixer) if (err < 0) return err; + /* Set up the interrupt polling for notifications. + * When running is: + * 0: all notifications are ignored + * 1: only ACKs are handled + * 2: all notifications are handled + */ + err = scarlett2_init_notify(mixer); + if (err < 0) + return err; + + /* sleep for a moment in case of an outstanding ACK */ + msleep(20); + + /* start handling ACKs, but no other notifications until the + * ALSA controls have been created + */ + private->running = 1; + /* step 1 */ private->scarlett2_seq = 1; err = scarlett2_usb(mixer, SCARLETT2_USB_INIT_1, NULL, 0, NULL, 0); @@ -7308,10 +7362,8 @@ static int snd_scarlett2_controls_create( scarlett2_phantom_update_access(mixer); } - /* Set up the interrupt polling */ - err = scarlett2_init_notify(mixer); - if (err < 0) - return err; + /* Start handling all notifications */ + private->running = 2; return 0; } |