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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2017-04-02 17:48:27 +0300
committerTakashi Iwai <tiwai@suse.de>2017-04-05 22:34:13 +0300
commitfdb2b2eee6bc33f4dcb1b05176e3008a4e494612 (patch)
treed473ae03cd9d830f8255638c2fad841c975ecbd9 /sound/firewire/digi00x
parent0c3f15f39cfd7697e0c4979a85fef1a3c3d17248 (diff)
downloadlinux-fdb2b2eee6bc33f4dcb1b05176e3008a4e494612.tar.xz
ALSA: firewire-digi00x: remove transaction handler for unknown purpose
For digi00x series, asynchronous transaction is not used to transfer MIDI messages to/from control surface. One of transction handlers in my previous work loses its practical meaning. This commit removes the handler. I note that unit of console type transfers 0x00001000 to registered address of host space when switching to 'standalone' mode. Then the unit generates bus reset. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/digi00x')
-rw-r--r--sound/firewire/digi00x/digi00x-transaction.c88
-rw-r--r--sound/firewire/digi00x/digi00x.h6
2 files changed, 17 insertions, 77 deletions
diff --git a/sound/firewire/digi00x/digi00x-transaction.c b/sound/firewire/digi00x/digi00x-transaction.c
index 735d35640807..af9bc8504781 100644
--- a/sound/firewire/digi00x/digi00x-transaction.c
+++ b/sound/firewire/digi00x/digi00x-transaction.c
@@ -9,40 +9,6 @@
#include <sound/asound.h>
#include "digi00x.h"
-static int fill_midi_message(struct snd_rawmidi_substream *substream, u8 *buf)
-{
- int bytes;
-
- buf[0] = 0x80;
- bytes = snd_rawmidi_transmit_peek(substream, buf + 1, 2);
- if (bytes >= 0)
- buf[3] = 0xc0 | bytes;
-
- return bytes;
-}
-
-static void handle_midi_control(struct snd_dg00x *dg00x, __be32 *buf,
- unsigned int length)
-{
- struct snd_rawmidi_substream *substream;
- unsigned int i;
- unsigned int len;
- u8 *b;
-
- substream = ACCESS_ONCE(dg00x->in_control);
- if (substream == NULL)
- return;
-
- length /= 4;
-
- for (i = 0; i < length; i++) {
- b = (u8 *)&buf[i];
- len = b[3] & 0xf;
- if (len > 0)
- snd_rawmidi_receive(dg00x->in_control, b + 1, len);
- }
-}
-
static void handle_unknown_message(struct snd_dg00x *dg00x,
unsigned long long offset, __be32 *buf)
{
@@ -63,39 +29,36 @@ static void handle_message(struct fw_card *card, struct fw_request *request,
struct snd_dg00x *dg00x = callback_data;
__be32 *buf = (__be32 *)data;
+ fw_send_response(card, request, RCODE_COMPLETE);
+
if (offset == dg00x->async_handler.offset)
handle_unknown_message(dg00x, offset, buf);
- else if (offset == dg00x->async_handler.offset + 4)
- handle_midi_control(dg00x, buf, length);
-
- fw_send_response(card, request, RCODE_COMPLETE);
}
int snd_dg00x_transaction_reregister(struct snd_dg00x *dg00x)
{
struct fw_device *device = fw_parent_device(dg00x->unit);
__be32 data[2];
- int err;
/* Unknown. 4bytes. */
data[0] = cpu_to_be32((device->card->node_id << 16) |
(dg00x->async_handler.offset >> 32));
data[1] = cpu_to_be32(dg00x->async_handler.offset);
- err = snd_fw_transaction(dg00x->unit, TCODE_WRITE_BLOCK_REQUEST,
- DG00X_ADDR_BASE + DG00X_OFFSET_MESSAGE_ADDR,
- &data, sizeof(data), 0);
- if (err < 0)
- return err;
-
- /* Asynchronous transactions for MIDI control message. */
- data[0] = cpu_to_be32((device->card->node_id << 16) |
- (dg00x->async_handler.offset >> 32));
- data[1] = cpu_to_be32(dg00x->async_handler.offset + 4);
return snd_fw_transaction(dg00x->unit, TCODE_WRITE_BLOCK_REQUEST,
- DG00X_ADDR_BASE + DG00X_OFFSET_MIDI_CTL_ADDR,
+ DG00X_ADDR_BASE + DG00X_OFFSET_MESSAGE_ADDR,
&data, sizeof(data), 0);
}
+void snd_dg00x_transaction_unregister(struct snd_dg00x *dg00x)
+{
+ if (dg00x->async_handler.callback_data == NULL)
+ return;
+
+ fw_core_remove_address_handler(&dg00x->async_handler);
+
+ dg00x->async_handler.callback_data = NULL;
+}
+
int snd_dg00x_transaction_register(struct snd_dg00x *dg00x)
{
static const struct fw_address_region resp_register_region = {
@@ -104,7 +67,7 @@ int snd_dg00x_transaction_register(struct snd_dg00x *dg00x)
};
int err;
- dg00x->async_handler.length = 12;
+ dg00x->async_handler.length = 4;
dg00x->async_handler.address_callback = handle_message;
dg00x->async_handler.callback_data = dg00x;
@@ -115,28 +78,7 @@ int snd_dg00x_transaction_register(struct snd_dg00x *dg00x)
err = snd_dg00x_transaction_reregister(dg00x);
if (err < 0)
- goto error;
-
- err = snd_fw_async_midi_port_init(&dg00x->out_control, dg00x->unit,
- DG00X_ADDR_BASE + DG00X_OFFSET_MMC,
- 4, fill_midi_message);
- if (err < 0)
- goto error;
+ snd_dg00x_transaction_unregister(dg00x);
return err;
-error:
- fw_core_remove_address_handler(&dg00x->async_handler);
- dg00x->async_handler.callback_data = NULL;
- return err;
-}
-
-void snd_dg00x_transaction_unregister(struct snd_dg00x *dg00x)
-{
- if (dg00x->async_handler.callback_data == NULL)
- return;
-
- snd_fw_async_midi_port_destroy(&dg00x->out_control);
- fw_core_remove_address_handler(&dg00x->async_handler);
-
- dg00x->async_handler.callback_data = NULL;
}
diff --git a/sound/firewire/digi00x/digi00x.h b/sound/firewire/digi00x/digi00x.h
index 4aefe45d8906..1275a50956c0 100644
--- a/sound/firewire/digi00x/digi00x.h
+++ b/sound/firewire/digi00x/digi00x.h
@@ -58,9 +58,7 @@ struct snd_dg00x {
struct fw_address_handler async_handler;
u32 msg;
- /* For asynchronous MIDI controls. */
- struct snd_rawmidi_substream *in_control;
- struct snd_fw_async_midi_port out_control;
+ /* Console models have additional MIDI ports for control surface. */
bool is_console;
};
@@ -68,7 +66,7 @@ struct snd_dg00x {
#define DG00X_OFFSET_STREAMING_STATE 0x0000
#define DG00X_OFFSET_STREAMING_SET 0x0004
-#define DG00X_OFFSET_MIDI_CTL_ADDR 0x0008
+/* unknown but address in host space 0x0008 */
/* For LSB of the address 0x000c */
/* unknown 0x0010 */
#define DG00X_OFFSET_MESSAGE_ADDR 0x0014