[alsa-devel] [PATCH 03/15] ALSA: line6: Distinguish device init (ctrl EP) and MIDI data transfer (int EP)

[Andrej Krutak]

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 | 10 +++++-----
 sound/usb/line6/driver.h |  6 ++++--
 sound/usb/line6/pod.c    |  9 ++++++++-
 sound/usb/line6/variax.c |  6 ++++--
 4 files changed, 21 insertions(+), 10 deletions(-)

diff --git a/sound/usb/line6/driver.c b/sound/usb/line6/driver.c
index efeb16a8..5fd6cad 100644
--- a/sound/usb/line6/driver.c
+++ b/sound/usb/line6/driver.c
@@ -482,7 +482,7 @@ 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;
 
@@ -572,8 +572,8 @@ 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;
 	}
@@ -643,7 +643,7 @@ 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) {
@@ -662,7 +662,7 @@ 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 0f0c45a..2551cb5 100644
--- a/sound/usb/line6/driver.h
+++ b/sound/usb/line6/driver.h
@@ -102,6 +102,8 @@ enum {
 	LINE6_CAP_PCM =		1 << 1,
 	/* device supports hardware monitoring */
 	LINE6_CAP_HWMON =	1 << 2,
+	/* device uses raw MIDI via USB (data endpoints) */
+	LINE6_CAP_CONTROL_MIDI = 1 << 3,
 	/* device requires output data when input is read */
 	LINE6_CAP_IN_NEEDS_OUT = 1 << 4,
 };
@@ -141,10 +143,10 @@ 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 31e5864..78642e7 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