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path: root/drivers/usb/gadget/function/f_midi2.c
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Diffstat (limited to 'drivers/usb/gadget/function/f_midi2.c')
-rw-r--r--drivers/usb/gadget/function/f_midi2.c55
1 files changed, 35 insertions, 20 deletions
diff --git a/drivers/usb/gadget/function/f_midi2.c b/drivers/usb/gadget/function/f_midi2.c
index ec8cd7c7bbfc..0a800ba53816 100644
--- a/drivers/usb/gadget/function/f_midi2.c
+++ b/drivers/usb/gadget/function/f_midi2.c
@@ -15,11 +15,11 @@
#include <sound/ump_convert.h>
#include <linux/usb/ch9.h>
+#include <linux/usb/func_utils.h>
#include <linux/usb/gadget.h>
#include <linux/usb/audio.h>
#include <linux/usb/midi-v2.h>
-#include "u_f.h"
#include "u_midi2.h"
struct f_midi2;
@@ -150,6 +150,9 @@ struct f_midi2 {
#define func_to_midi2(f) container_of(f, struct f_midi2, func)
+/* convert from MIDI protocol number (1 or 2) to SNDRV_UMP_EP_INFO_PROTO_* */
+#define to_ump_protocol(v) (((v) & 3) << 8)
+
/* get EP name string */
static const char *ump_ep_name(const struct f_midi2_ep *ep)
{
@@ -472,7 +475,7 @@ static void reply_ump_stream_ep_info(struct f_midi2_ep *ep)
/* reply a UMP EP device info */
static void reply_ump_stream_ep_device(struct f_midi2_ep *ep)
{
- struct snd_ump_stream_msg_devince_info rep = {
+ struct snd_ump_stream_msg_device_info rep = {
.type = UMP_MSG_TYPE_STREAM,
.status = UMP_STREAM_MSG_STATUS_DEVICE_INFO,
.manufacture_id = ep->info.manufacturer,
@@ -564,8 +567,7 @@ static void reply_ump_stream_ep_config(struct f_midi2_ep *ep)
.status = UMP_STREAM_MSG_STATUS_STREAM_CFG,
};
- if ((ep->info.protocol & SNDRV_UMP_EP_INFO_PROTO_MIDI_MASK) ==
- SNDRV_UMP_EP_INFO_PROTO_MIDI2)
+ if (ep->info.protocol == 2)
rep.protocol = UMP_STREAM_MSG_EP_INFO_CAP_MIDI2 >> 8;
else
rep.protocol = UMP_STREAM_MSG_EP_INFO_CAP_MIDI1 >> 8;
@@ -627,25 +629,34 @@ static void process_ump_stream_msg(struct f_midi2_ep *ep, const u32 *data)
return;
case UMP_STREAM_MSG_STATUS_STREAM_CFG_REQUEST:
if (*data & UMP_STREAM_MSG_EP_INFO_CAP_MIDI2) {
- ep->info.protocol = SNDRV_UMP_EP_INFO_PROTO_MIDI2;
+ ep->info.protocol = 2;
DBG(midi2, "Switching Protocol to MIDI2\n");
} else {
- ep->info.protocol = SNDRV_UMP_EP_INFO_PROTO_MIDI1;
+ ep->info.protocol = 1;
DBG(midi2, "Switching Protocol to MIDI1\n");
}
- snd_ump_switch_protocol(ep->ump, ep->info.protocol);
+ snd_ump_switch_protocol(ep->ump, to_ump_protocol(ep->info.protocol));
reply_ump_stream_ep_config(ep);
return;
case UMP_STREAM_MSG_STATUS_FB_DISCOVERY:
if (format)
return; // invalid
blk = (*data >> 8) & 0xff;
- if (blk >= ep->num_blks)
- return;
- if (*data & UMP_STREAM_MSG_REQUEST_FB_INFO)
- reply_ump_stream_fb_info(ep, blk);
- if (*data & UMP_STREAM_MSG_REQUEST_FB_NAME)
- reply_ump_stream_fb_name(ep, blk);
+ if (blk == 0xff) {
+ /* inquiry for all blocks */
+ for (blk = 0; blk < ep->num_blks; blk++) {
+ if (*data & UMP_STREAM_MSG_REQUEST_FB_INFO)
+ reply_ump_stream_fb_info(ep, blk);
+ if (*data & UMP_STREAM_MSG_REQUEST_FB_NAME)
+ reply_ump_stream_fb_name(ep, blk);
+ }
+ } else if (blk < ep->num_blks) {
+ /* only the specified block */
+ if (*data & UMP_STREAM_MSG_REQUEST_FB_INFO)
+ reply_ump_stream_fb_info(ep, blk);
+ if (*data & UMP_STREAM_MSG_REQUEST_FB_NAME)
+ reply_ump_stream_fb_name(ep, blk);
+ }
return;
}
}
@@ -1065,7 +1076,8 @@ static void f_midi2_midi1_ep_out_complete(struct usb_ep *usb_ep,
group = midi2->out_cable_mapping[cable].group;
bytes = midi1_packet_bytes[*buf & 0x0f];
for (c = 0; c < bytes; c++) {
- snd_ump_convert_to_ump(cvt, group, ep->info.protocol,
+ snd_ump_convert_to_ump(cvt, group,
+ to_ump_protocol(ep->info.protocol),
buf[c + 1]);
if (cvt->ump_bytes) {
snd_ump_receive(ep->ump, cvt->ump,
@@ -1273,10 +1285,8 @@ static int f_midi2_set_alt(struct usb_function *fn, unsigned int intf,
if (alt == 0)
op_mode = MIDI_OP_MODE_MIDI1;
- else if (alt == 1)
- op_mode = MIDI_OP_MODE_MIDI2;
else
- op_mode = MIDI_OP_MODE_UNSET;
+ op_mode = MIDI_OP_MODE_MIDI2;
if (midi2->operation_mode == op_mode)
return 0;
@@ -1375,7 +1385,7 @@ static void assign_block_descriptors(struct f_midi2 *midi2,
desc->nNumGroupTrm = b->num_groups;
desc->iBlockItem = ep->blks[blk].string_id;
- if (ep->info.protocol & SNDRV_UMP_EP_INFO_PROTO_MIDI2)
+ if (ep->info.protocol == 2)
desc->bMIDIProtocol = USB_MS_MIDI_PROTO_2_0;
else
desc->bMIDIProtocol = USB_MS_MIDI_PROTO_1_0_128;
@@ -1552,7 +1562,7 @@ static int f_midi2_create_card(struct f_midi2 *midi2)
if (midi2->info.static_block)
ump->info.flags |= SNDRV_UMP_EP_INFO_STATIC_BLOCKS;
ump->info.protocol_caps = (ep->info.protocol_caps & 3) << 8;
- ump->info.protocol = (ep->info.protocol & 3) << 8;
+ ump->info.protocol = to_ump_protocol(ep->info.protocol);
ump->info.version = 0x0101;
ump->info.family_id = ep->info.family;
ump->info.model_id = ep->info.model;
@@ -1581,7 +1591,11 @@ static int f_midi2_create_card(struct f_midi2 *midi2)
fb->info.midi_ci_version = b->midi_ci_version;
fb->info.ui_hint = reverse_dir(b->ui_hint);
fb->info.sysex8_streams = b->sysex8_streams;
- fb->info.flags |= b->is_midi1;
+ if (b->is_midi1 < 2)
+ fb->info.flags |= b->is_midi1;
+ else
+ fb->info.flags |= SNDRV_UMP_BLOCK_IS_MIDI1 |
+ SNDRV_UMP_BLOCK_IS_LOWSPEED;
strscpy(fb->info.name, ump_fb_name(b),
sizeof(fb->info.name));
}
@@ -2868,4 +2882,5 @@ static struct usb_function *f_midi2_alloc(struct usb_function_instance *fi)
DECLARE_USB_FUNCTION_INIT(midi2, f_midi2_alloc_inst, f_midi2_alloc);
+MODULE_DESCRIPTION("USB MIDI 2.0 class function driver");
MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2025-07-15 11:18:07 +0000