[alsa-devel] [PATCH v4 06/12] ALSA: line6: Distinguish device init (ctrl EP) and MIDI data transfer (int EP)
Andrej Krutak
dev at andree.sk
Sun Sep 18 20:59:26 CEST 2016
POD X3 can initialize similarly to older PODs, but it doesn't have the MIDI
interface. Instead, configuration is done via proprietary bulk EP messages.
Signed-off-by: Andrej Krutak <dev at andree.sk>
---
sound/usb/line6/driver.c | 72 ++++++++++++++++++++++++++++++++++--------------
sound/usb/line6/driver.h | 6 ++--
sound/usb/line6/pod.c | 9 +++++-
sound/usb/line6/variax.c | 6 ++--
4 files changed, 68 insertions(+), 25 deletions(-)
diff --git a/sound/usb/line6/driver.c b/sound/usb/line6/driver.c
index 14032d9..9b16777 100644
--- a/sound/usb/line6/driver.c
+++ b/sound/usb/line6/driver.c
@@ -66,10 +66,17 @@ static int line6_start_listen(struct usb_line6 *line6)
{
int err;
- usb_fill_int_urb(line6->urb_listen, line6->usbdev,
- usb_rcvintpipe(line6->usbdev, line6->properties->ep_ctrl_r),
- line6->buffer_listen, LINE6_BUFSIZE_LISTEN,
- line6_data_received, line6, line6->interval);
+ if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI) {
+ usb_fill_int_urb(line6->urb_listen, line6->usbdev,
+ usb_rcvintpipe(line6->usbdev, line6->properties->ep_ctrl_r),
+ line6->buffer_listen, LINE6_BUFSIZE_LISTEN,
+ line6_data_received, line6, line6->interval);
+ } else {
+ usb_fill_bulk_urb(line6->urb_listen, line6->usbdev,
+ usb_rcvbulkpipe(line6->usbdev, line6->properties->ep_ctrl_r),
+ line6->buffer_listen, LINE6_BUFSIZE_LISTEN,
+ line6_data_received, line6);
+ }
line6->urb_listen->actual_length = 0;
err = usb_submit_urb(line6->urb_listen, GFP_ATOMIC);
return err;
@@ -90,6 +97,7 @@ static int line6_send_raw_message(struct usb_line6 *line6, const char *buffer,
int size)
{
int i, done = 0;
+ const struct line6_properties *properties = line6->properties;
for (i = 0; i < size; i += line6->max_packet_size) {
int partial;
@@ -97,15 +105,21 @@ static int line6_send_raw_message(struct usb_line6 *line6, const char *buffer,
int frag_size = min(line6->max_packet_size, size - i);
int retval;
- retval = usb_interrupt_msg(line6->usbdev,
- usb_sndintpipe(line6->usbdev,
- line6->properties->ep_ctrl_w),
- (char *)frag_buf, frag_size,
- &partial, LINE6_TIMEOUT * HZ);
+ if (properties->capabilities & LINE6_CAP_CONTROL_MIDI) {
+ retval = usb_interrupt_msg(line6->usbdev,
+ usb_sndintpipe(line6->usbdev, properties->ep_ctrl_w),
+ (char *)frag_buf, frag_size,
+ &partial, LINE6_TIMEOUT * HZ);
+ } else {
+ retval = usb_bulk_msg(line6->usbdev,
+ usb_sndbulkpipe(line6->usbdev, properties->ep_ctrl_w),
+ (char *)frag_buf, frag_size,
+ &partial, LINE6_TIMEOUT * HZ);
+ }
if (retval) {
dev_err(line6->ifcdev,
- "usb_interrupt_msg failed (%d)\n", retval);
+ "usb_bulk_msg failed (%d)\n", retval);
break;
}
@@ -140,10 +154,17 @@ static int line6_send_raw_message_async_part(struct message *msg,
int done = msg->done;
int bytes = min(msg->size - done, line6->max_packet_size);
- usb_fill_int_urb(urb, line6->usbdev,
- usb_sndintpipe(line6->usbdev, line6->properties->ep_ctrl_w),
- (char *)msg->buffer + done, bytes,
- line6_async_request_sent, msg, line6->interval);
+ if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI) {
+ usb_fill_int_urb(urb, line6->usbdev,
+ usb_sndintpipe(line6->usbdev, line6->properties->ep_ctrl_w),
+ (char *)msg->buffer + done, bytes,
+ line6_async_request_sent, msg, line6->interval);
+ } else {
+ usb_fill_bulk_urb(urb, line6->usbdev,
+ usb_sndbulkpipe(line6->usbdev, line6->properties->ep_ctrl_w),
+ (char *)msg->buffer + done, bytes,
+ line6_async_request_sent, msg);
+ }
msg->done += bytes;
retval = usb_submit_urb(urb, GFP_ATOMIC);
@@ -462,7 +483,18 @@ static void line6_destruct(struct snd_card *card)
static void line6_get_interval(struct usb_line6 *line6)
{
struct usb_device *usbdev = line6->usbdev;
- struct usb_host_endpoint *ep = usbdev->ep_in[line6->properties->ep_ctrl_r];
+ const struct line6_properties *properties = line6->properties;
+ int pipe;
+ struct usb_host_endpoint *ep;
+
+ if (properties->capabilities & LINE6_CAP_CONTROL_MIDI) {
+ pipe =
+ usb_rcvintpipe(line6->usbdev, line6->properties->ep_ctrl_r);
+ } else {
+ pipe =
+ usb_rcvbulkpipe(line6->usbdev, line6->properties->ep_ctrl_r);
+ }
+ ep = usbdev->ep_in[usb_pipeendpoint(pipe)];
if (ep) {
line6->interval = ep->desc.bInterval;
@@ -483,7 +515,7 @@ static void line6_get_interval(struct usb_line6 *line6)
}
}
-static int line6_init_cap_control(struct usb_line6 *line6)
+static int line6_init_cap_control_midi(struct usb_line6 *line6)
{
int ret;
@@ -573,8 +605,8 @@ int line6_probe(struct usb_interface *interface,
line6_get_interval(line6);
- if (properties->capabilities & LINE6_CAP_CONTROL) {
- ret = line6_init_cap_control(line6);
+ if (properties->capabilities & LINE6_CAP_CONTROL_MIDI) {
+ ret = line6_init_cap_control_midi(line6);
if (ret < 0)
goto error;
}
@@ -644,7 +676,7 @@ int line6_suspend(struct usb_interface *interface, pm_message_t message)
snd_power_change_state(line6->card, SNDRV_CTL_POWER_D3hot);
- if (line6->properties->capabilities & LINE6_CAP_CONTROL)
+ if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI)
line6_stop_listen(line6);
if (line6pcm != NULL) {
@@ -663,7 +695,7 @@ int line6_resume(struct usb_interface *interface)
{
struct usb_line6 *line6 = usb_get_intfdata(interface);
- if (line6->properties->capabilities & LINE6_CAP_CONTROL)
+ if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI)
line6_start_listen(line6);
snd_power_change_state(line6->card, SNDRV_CTL_POWER_D0);
diff --git a/sound/usb/line6/driver.h b/sound/usb/line6/driver.h
index 0bcab38..d48c7d2 100644
--- a/sound/usb/line6/driver.h
+++ b/sound/usb/line6/driver.h
@@ -104,6 +104,8 @@ enum {
LINE6_CAP_HWMON = 1 << 2,
/* device requires output data when input is read */
LINE6_CAP_IN_NEEDS_OUT = 1 << 3,
+ /* device uses raw MIDI via USB (data endpoints) */
+ LINE6_CAP_CONTROL_MIDI = 1 << 4,
};
/*
@@ -142,10 +144,10 @@ struct usb_line6 {
/* Line 6 MIDI device data structure */
struct snd_line6_midi *line6midi;
- /* URB for listening to PODxt Pro control endpoint */
+ /* URB for listening to POD data endpoint */
struct urb *urb_listen;
- /* Buffer for listening to PODxt Pro control endpoint */
+ /* Buffer for listening to POD data endpoint */
unsigned char *buffer_listen;
/* Buffer for message to be processed */
diff --git a/sound/usb/line6/pod.c b/sound/usb/line6/pod.c
index 36e7274..17aa616 100644
--- a/sound/usb/line6/pod.c
+++ b/sound/usb/line6/pod.c
@@ -475,6 +475,7 @@ static const struct line6_properties pod_properties_table[] = {
.id = "BassPODxt",
.name = "BassPODxt",
.capabilities = LINE6_CAP_CONTROL
+ | LINE6_CAP_CONTROL_MIDI
| LINE6_CAP_PCM
| LINE6_CAP_HWMON,
.altsetting = 5,
@@ -487,6 +488,7 @@ static const struct line6_properties pod_properties_table[] = {
.id = "BassPODxtLive",
.name = "BassPODxt Live",
.capabilities = LINE6_CAP_CONTROL
+ | LINE6_CAP_CONTROL_MIDI
| LINE6_CAP_PCM
| LINE6_CAP_HWMON,
.altsetting = 1,
@@ -499,6 +501,7 @@ static const struct line6_properties pod_properties_table[] = {
.id = "BassPODxtPro",
.name = "BassPODxt Pro",
.capabilities = LINE6_CAP_CONTROL
+ | LINE6_CAP_CONTROL_MIDI
| LINE6_CAP_PCM
| LINE6_CAP_HWMON,
.altsetting = 5,
@@ -510,7 +513,8 @@ static const struct line6_properties pod_properties_table[] = {
[LINE6_POCKETPOD] = {
.id = "PocketPOD",
.name = "Pocket POD",
- .capabilities = LINE6_CAP_CONTROL,
+ .capabilities = LINE6_CAP_CONTROL
+ | LINE6_CAP_CONTROL_MIDI,
.altsetting = 0,
.ep_ctrl_r = 0x82,
.ep_ctrl_w = 0x02,
@@ -520,6 +524,7 @@ static const struct line6_properties pod_properties_table[] = {
.id = "PODxt",
.name = "PODxt",
.capabilities = LINE6_CAP_CONTROL
+ | LINE6_CAP_CONTROL_MIDI
| LINE6_CAP_PCM
| LINE6_CAP_HWMON,
.altsetting = 5,
@@ -532,6 +537,7 @@ static const struct line6_properties pod_properties_table[] = {
.id = "PODxtLive",
.name = "PODxt Live",
.capabilities = LINE6_CAP_CONTROL
+ | LINE6_CAP_CONTROL_MIDI
| LINE6_CAP_PCM
| LINE6_CAP_HWMON,
.altsetting = 1,
@@ -544,6 +550,7 @@ static const struct line6_properties pod_properties_table[] = {
.id = "PODxtPro",
.name = "PODxt Pro",
.capabilities = LINE6_CAP_CONTROL
+ | LINE6_CAP_CONTROL_MIDI
| LINE6_CAP_PCM
| LINE6_CAP_HWMON,
.altsetting = 5,
diff --git a/sound/usb/line6/variax.c b/sound/usb/line6/variax.c
index ddc23dd..0c4512d 100644
--- a/sound/usb/line6/variax.c
+++ b/sound/usb/line6/variax.c
@@ -259,7 +259,8 @@ static const struct line6_properties variax_properties_table[] = {
[LINE6_PODXTLIVE_VARIAX] = {
.id = "PODxtLive",
.name = "PODxt Live",
- .capabilities = LINE6_CAP_CONTROL,
+ .capabilities = LINE6_CAP_CONTROL
+ | LINE6_CAP_CONTROL_MIDI,
.altsetting = 1,
.ep_ctrl_r = 0x86,
.ep_ctrl_w = 0x05,
@@ -269,7 +270,8 @@ static const struct line6_properties variax_properties_table[] = {
[LINE6_VARIAX] = {
.id = "Variax",
.name = "Variax Workbench",
- .capabilities = LINE6_CAP_CONTROL,
+ .capabilities = LINE6_CAP_CONTROL
+ | LINE6_CAP_CONTROL_MIDI,
.altsetting = 1,
.ep_ctrl_r = 0x82,
.ep_ctrl_w = 0x01,
--
1.9.1
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