ALSA: line6: Allow processing of raw incoming messages
Not all PODs use MIDI via USB data interface, thus allow avoiding that code and instead using direct processing. Signed-off-by: Andrej Krutak <dev@andree.sk> Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
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174e1fc0bf
commit
7811a3ad18
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@ -290,26 +290,31 @@ static void line6_data_received(struct urb *urb)
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if (urb->status == -ESHUTDOWN)
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if (urb->status == -ESHUTDOWN)
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return;
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return;
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done =
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if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI) {
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line6_midibuf_write(mb, urb->transfer_buffer, urb->actual_length);
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if (done < urb->actual_length) {
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line6_midibuf_ignore(mb, done);
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dev_dbg(line6->ifcdev, "%d %d buffer overflow - message skipped\n",
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done, urb->actual_length);
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}
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for (;;) {
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done =
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done =
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line6_midibuf_read(mb, line6->buffer_message,
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line6_midibuf_write(mb, urb->transfer_buffer, urb->actual_length);
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LINE6_MESSAGE_MAXLEN);
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if (done == 0)
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if (done < urb->actual_length) {
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break;
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line6_midibuf_ignore(mb, done);
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dev_dbg(line6->ifcdev, "%d %d buffer overflow - message skipped\n",
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done, urb->actual_length);
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}
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line6->message_length = done;
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for (;;) {
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line6_midi_receive(line6, line6->buffer_message, done);
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done =
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line6_midibuf_read(mb, line6->buffer_message,
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LINE6_MESSAGE_MAXLEN);
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if (done == 0)
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break;
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line6->message_length = done;
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line6_midi_receive(line6, line6->buffer_message, done);
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if (line6->process_message)
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line6->process_message(line6);
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}
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} else {
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if (line6->process_message)
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if (line6->process_message)
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line6->process_message(line6);
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line6->process_message(line6);
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}
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}
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@ -469,7 +474,9 @@ static void line6_destruct(struct snd_card *card)
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struct usb_device *usbdev = line6->usbdev;
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struct usb_device *usbdev = line6->usbdev;
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/* free buffer memory first: */
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/* free buffer memory first: */
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kfree(line6->buffer_message);
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if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI)
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kfree(line6->buffer_message);
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kfree(line6->buffer_listen);
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kfree(line6->buffer_listen);
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/* then free URBs: */
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/* then free URBs: */
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@ -515,7 +522,7 @@ static void line6_get_interval(struct usb_line6 *line6)
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}
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}
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}
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}
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static int line6_init_cap_control_midi(struct usb_line6 *line6)
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static int line6_init_cap_control(struct usb_line6 *line6)
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{
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{
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int ret;
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int ret;
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@ -524,14 +531,16 @@ static int line6_init_cap_control_midi(struct usb_line6 *line6)
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if (!line6->buffer_listen)
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if (!line6->buffer_listen)
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return -ENOMEM;
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return -ENOMEM;
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line6->buffer_message = kmalloc(LINE6_MESSAGE_MAXLEN, GFP_KERNEL);
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if (!line6->buffer_message)
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return -ENOMEM;
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line6->urb_listen = usb_alloc_urb(0, GFP_KERNEL);
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line6->urb_listen = usb_alloc_urb(0, GFP_KERNEL);
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if (!line6->urb_listen)
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if (!line6->urb_listen)
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return -ENOMEM;
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return -ENOMEM;
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if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI) {
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line6->buffer_message = kmalloc(LINE6_MESSAGE_MAXLEN, GFP_KERNEL);
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if (!line6->buffer_message)
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return -ENOMEM;
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}
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ret = line6_start_listen(line6);
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ret = line6_start_listen(line6);
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if (ret < 0) {
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if (ret < 0) {
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dev_err(line6->ifcdev, "cannot start listening: %d\n", ret);
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dev_err(line6->ifcdev, "cannot start listening: %d\n", ret);
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@ -605,8 +614,8 @@ int line6_probe(struct usb_interface *interface,
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line6_get_interval(line6);
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line6_get_interval(line6);
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if (properties->capabilities & LINE6_CAP_CONTROL_MIDI) {
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if (properties->capabilities & LINE6_CAP_CONTROL) {
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ret = line6_init_cap_control_midi(line6);
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ret = line6_init_cap_control(line6);
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if (ret < 0)
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if (ret < 0)
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goto error;
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goto error;
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}
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}
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@ -676,7 +685,7 @@ int line6_suspend(struct usb_interface *interface, pm_message_t message)
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snd_power_change_state(line6->card, SNDRV_CTL_POWER_D3hot);
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snd_power_change_state(line6->card, SNDRV_CTL_POWER_D3hot);
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if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI)
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if (line6->properties->capabilities & LINE6_CAP_CONTROL)
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line6_stop_listen(line6);
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line6_stop_listen(line6);
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if (line6pcm != NULL) {
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if (line6pcm != NULL) {
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@ -695,7 +704,7 @@ int line6_resume(struct usb_interface *interface)
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{
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{
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struct usb_line6 *line6 = usb_get_intfdata(interface);
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struct usb_line6 *line6 = usb_get_intfdata(interface);
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if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI)
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if (line6->properties->capabilities & LINE6_CAP_CONTROL)
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line6_start_listen(line6);
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line6_start_listen(line6);
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snd_power_change_state(line6->card, SNDRV_CTL_POWER_D0);
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snd_power_change_state(line6->card, SNDRV_CTL_POWER_D0);
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@ -147,15 +147,18 @@ struct usb_line6 {
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/* URB for listening to POD data endpoint */
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/* URB for listening to POD data endpoint */
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struct urb *urb_listen;
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struct urb *urb_listen;
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/* Buffer for listening to POD data endpoint */
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/* Buffer for incoming data from POD data endpoint */
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unsigned char *buffer_listen;
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unsigned char *buffer_listen;
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/* Buffer for message to be processed */
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/* Buffer for message to be processed, generated from MIDI layer */
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unsigned char *buffer_message;
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unsigned char *buffer_message;
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/* Length of message to be processed */
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/* Length of message to be processed, generated from MIDI layer */
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int message_length;
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int message_length;
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/* If MIDI is supported, buffer_message contains the pre-processed data;
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* otherwise the data is only in urb_listen (buffer_incoming).
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*/
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void (*process_message)(struct usb_line6 *);
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void (*process_message)(struct usb_line6 *);
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void (*disconnect)(struct usb_line6 *line6);
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void (*disconnect)(struct usb_line6 *line6);
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};
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};
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@ -258,7 +258,7 @@ int line6_init_midi(struct usb_line6 *line6)
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struct snd_rawmidi *rmidi;
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struct snd_rawmidi *rmidi;
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struct snd_line6_midi *line6midi;
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struct snd_line6_midi *line6midi;
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if (!(line6->properties->capabilities & LINE6_CAP_CONTROL)) {
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if (!(line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI)) {
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/* skip MIDI initialization and report success */
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/* skip MIDI initialization and report success */
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return 0;
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return 0;
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}
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}
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