forked from Minki/linux
ALSA: fireface: unify protocol layer for FF400/FF800
This commit moves codes for Fireface 400 to a file of former protocol. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto
Takashi Iwai
parent
e199d1eb7f
commit
9dd466aca3
@ -1,4 +1,3 @@
|
||||
snd-fireface-objs := ff.o ff-transaction.o ff-midi.o ff-proc.o amdtp-ff.o \
|
||||
ff-stream.o ff-pcm.o ff-hwdep.o ff-protocol-ff400.o \
|
||||
ff-protocol-former.o
|
||||
ff-stream.o ff-pcm.o ff-hwdep.o ff-protocol-former.o
|
||||
obj-$(CONFIG_SND_FIREFACE) += snd-fireface.o
|
||||
|
||||
@ -1,161 +0,0 @@
|
||||
/*
|
||||
* ff-protocol-ff400.c - a part of driver for RME Fireface series
|
||||
*
|
||||
* Copyright (c) 2015-2017 Takashi Sakamoto
|
||||
*
|
||||
* Licensed under the terms of the GNU General Public License, version 2.
|
||||
*/
|
||||
|
||||
#include <linux/delay.h>
|
||||
#include "ff.h"
|
||||
|
||||
#define FF400_STF 0x000080100500ull
|
||||
#define FF400_RX_PACKET_FORMAT 0x000080100504ull
|
||||
#define FF400_ISOC_COMM_START 0x000080100508ull
|
||||
#define FF400_TX_PACKET_FORMAT 0x00008010050cull
|
||||
#define FF400_ISOC_COMM_STOP 0x000080100510ull
|
||||
|
||||
/*
|
||||
* Fireface 400 manages isochronous channel number in 3 bit field. Therefore,
|
||||
* we can allocate between 0 and 7 channel.
|
||||
*/
|
||||
static int keep_resources(struct snd_ff *ff, unsigned int rate)
|
||||
{
|
||||
enum snd_ff_stream_mode mode;
|
||||
int i;
|
||||
int err;
|
||||
|
||||
// Check whether the given value is supported or not.
|
||||
for (i = 0; i < CIP_SFC_COUNT; i++) {
|
||||
if (amdtp_rate_table[i] == rate)
|
||||
break;
|
||||
}
|
||||
if (i >= CIP_SFC_COUNT)
|
||||
return -EINVAL;
|
||||
|
||||
err = snd_ff_stream_get_multiplier_mode(i, &mode);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
/* Keep resources for in-stream. */
|
||||
ff->tx_resources.channels_mask = 0x00000000000000ffuLL;
|
||||
err = fw_iso_resources_allocate(&ff->tx_resources,
|
||||
amdtp_stream_get_max_payload(&ff->tx_stream),
|
||||
fw_parent_device(ff->unit)->max_speed);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
/* Keep resources for out-stream. */
|
||||
err = amdtp_ff_set_parameters(&ff->rx_stream, rate,
|
||||
ff->spec->pcm_playback_channels[mode]);
|
||||
if (err < 0)
|
||||
return err;
|
||||
ff->rx_resources.channels_mask = 0x00000000000000ffuLL;
|
||||
err = fw_iso_resources_allocate(&ff->rx_resources,
|
||||
amdtp_stream_get_max_payload(&ff->rx_stream),
|
||||
fw_parent_device(ff->unit)->max_speed);
|
||||
if (err < 0)
|
||||
fw_iso_resources_free(&ff->tx_resources);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static int ff400_begin_session(struct snd_ff *ff, unsigned int rate)
|
||||
{
|
||||
__le32 reg;
|
||||
int err;
|
||||
|
||||
err = keep_resources(ff, rate);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
/* Set the number of data blocks transferred in a second. */
|
||||
reg = cpu_to_le32(rate);
|
||||
err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
|
||||
FF400_STF, ®, sizeof(reg), 0);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
msleep(100);
|
||||
|
||||
/*
|
||||
* Set isochronous channel and the number of quadlets of received
|
||||
* packets.
|
||||
*/
|
||||
reg = cpu_to_le32(((ff->rx_stream.data_block_quadlets << 3) << 8) |
|
||||
ff->rx_resources.channel);
|
||||
err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
|
||||
FF400_RX_PACKET_FORMAT, ®, sizeof(reg), 0);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
/*
|
||||
* Set isochronous channel and the number of quadlets of transmitted
|
||||
* packet.
|
||||
*/
|
||||
/* TODO: investigate the purpose of this 0x80. */
|
||||
reg = cpu_to_le32((0x80 << 24) |
|
||||
(ff->tx_resources.channel << 5) |
|
||||
(ff->tx_stream.data_block_quadlets));
|
||||
err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
|
||||
FF400_TX_PACKET_FORMAT, ®, sizeof(reg), 0);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
/* Allow to transmit packets. */
|
||||
reg = cpu_to_le32(0x00000001);
|
||||
return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
|
||||
FF400_ISOC_COMM_START, ®, sizeof(reg), 0);
|
||||
}
|
||||
|
||||
static void ff400_finish_session(struct snd_ff *ff)
|
||||
{
|
||||
__le32 reg;
|
||||
|
||||
reg = cpu_to_le32(0x80000000);
|
||||
snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
|
||||
FF400_ISOC_COMM_STOP, ®, sizeof(reg), 0);
|
||||
}
|
||||
|
||||
static void ff400_handle_midi_msg(struct snd_ff *ff, __le32 *buf, size_t length)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < length / 4; i++) {
|
||||
u32 quad = le32_to_cpu(buf[i]);
|
||||
u8 byte;
|
||||
unsigned int index;
|
||||
struct snd_rawmidi_substream *substream;
|
||||
|
||||
/* Message in first port. */
|
||||
/*
|
||||
* This value may represent the index of this unit when the same
|
||||
* units are on the same IEEE 1394 bus. This driver doesn't use
|
||||
* it.
|
||||
*/
|
||||
index = (quad >> 8) & 0xff;
|
||||
if (index > 0) {
|
||||
substream = READ_ONCE(ff->tx_midi_substreams[0]);
|
||||
if (substream != NULL) {
|
||||
byte = quad & 0xff;
|
||||
snd_rawmidi_receive(substream, &byte, 1);
|
||||
}
|
||||
}
|
||||
|
||||
/* Message in second port. */
|
||||
index = (quad >> 24) & 0xff;
|
||||
if (index > 0) {
|
||||
substream = READ_ONCE(ff->tx_midi_substreams[1]);
|
||||
if (substream != NULL) {
|
||||
byte = (quad >> 16) & 0xff;
|
||||
snd_rawmidi_receive(substream, &byte, 1);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
const struct snd_ff_protocol snd_ff_protocol_ff400 = {
|
||||
.handle_midi_msg = ff400_handle_midi_msg,
|
||||
.begin_session = ff400_begin_session,
|
||||
.finish_session = ff400_finish_session,
|
||||
};
|
||||
@ -140,3 +140,150 @@ const struct snd_ff_protocol snd_ff_protocol_ff800 = {
|
||||
.begin_session = ff800_begin_session,
|
||||
.finish_session = ff800_finish_session,
|
||||
};
|
||||
|
||||
#define FF400_STF 0x000080100500ull
|
||||
#define FF400_RX_PACKET_FORMAT 0x000080100504ull
|
||||
#define FF400_ISOC_COMM_START 0x000080100508ull
|
||||
#define FF400_TX_PACKET_FORMAT 0x00008010050cull
|
||||
#define FF400_ISOC_COMM_STOP 0x000080100510ull
|
||||
|
||||
/*
|
||||
* Fireface 400 manages isochronous channel number in 3 bit field. Therefore,
|
||||
* we can allocate between 0 and 7 channel.
|
||||
*/
|
||||
static int keep_resources(struct snd_ff *ff, unsigned int rate)
|
||||
{
|
||||
enum snd_ff_stream_mode mode;
|
||||
int i;
|
||||
int err;
|
||||
|
||||
// Check whether the given value is supported or not.
|
||||
for (i = 0; i < CIP_SFC_COUNT; i++) {
|
||||
if (amdtp_rate_table[i] == rate)
|
||||
break;
|
||||
}
|
||||
if (i >= CIP_SFC_COUNT)
|
||||
return -EINVAL;
|
||||
|
||||
err = snd_ff_stream_get_multiplier_mode(i, &mode);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
/* Keep resources for in-stream. */
|
||||
ff->tx_resources.channels_mask = 0x00000000000000ffuLL;
|
||||
err = fw_iso_resources_allocate(&ff->tx_resources,
|
||||
amdtp_stream_get_max_payload(&ff->tx_stream),
|
||||
fw_parent_device(ff->unit)->max_speed);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
/* Keep resources for out-stream. */
|
||||
ff->rx_resources.channels_mask = 0x00000000000000ffuLL;
|
||||
err = fw_iso_resources_allocate(&ff->rx_resources,
|
||||
amdtp_stream_get_max_payload(&ff->rx_stream),
|
||||
fw_parent_device(ff->unit)->max_speed);
|
||||
if (err < 0)
|
||||
fw_iso_resources_free(&ff->tx_resources);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static int ff400_begin_session(struct snd_ff *ff, unsigned int rate)
|
||||
{
|
||||
__le32 reg;
|
||||
int err;
|
||||
|
||||
err = keep_resources(ff, rate);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
/* Set the number of data blocks transferred in a second. */
|
||||
reg = cpu_to_le32(rate);
|
||||
err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
|
||||
FF400_STF, ®, sizeof(reg), 0);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
msleep(100);
|
||||
|
||||
/*
|
||||
* Set isochronous channel and the number of quadlets of received
|
||||
* packets.
|
||||
*/
|
||||
reg = cpu_to_le32(((ff->rx_stream.data_block_quadlets << 3) << 8) |
|
||||
ff->rx_resources.channel);
|
||||
err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
|
||||
FF400_RX_PACKET_FORMAT, ®, sizeof(reg), 0);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
/*
|
||||
* Set isochronous channel and the number of quadlets of transmitted
|
||||
* packet.
|
||||
*/
|
||||
/* TODO: investigate the purpose of this 0x80. */
|
||||
reg = cpu_to_le32((0x80 << 24) |
|
||||
(ff->tx_resources.channel << 5) |
|
||||
(ff->tx_stream.data_block_quadlets));
|
||||
err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
|
||||
FF400_TX_PACKET_FORMAT, ®, sizeof(reg), 0);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
/* Allow to transmit packets. */
|
||||
reg = cpu_to_le32(0x00000001);
|
||||
return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
|
||||
FF400_ISOC_COMM_START, ®, sizeof(reg), 0);
|
||||
}
|
||||
|
||||
static void ff400_finish_session(struct snd_ff *ff)
|
||||
{
|
||||
__le32 reg;
|
||||
|
||||
reg = cpu_to_le32(0x80000000);
|
||||
snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
|
||||
FF400_ISOC_COMM_STOP, ®, sizeof(reg), 0);
|
||||
}
|
||||
|
||||
static void ff400_handle_midi_msg(struct snd_ff *ff, __le32 *buf, size_t length)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < length / 4; i++) {
|
||||
u32 quad = le32_to_cpu(buf[i]);
|
||||
u8 byte;
|
||||
unsigned int index;
|
||||
struct snd_rawmidi_substream *substream;
|
||||
|
||||
/* Message in first port. */
|
||||
/*
|
||||
* This value may represent the index of this unit when the same
|
||||
* units are on the same IEEE 1394 bus. This driver doesn't use
|
||||
* it.
|
||||
*/
|
||||
index = (quad >> 8) & 0xff;
|
||||
if (index > 0) {
|
||||
substream = READ_ONCE(ff->tx_midi_substreams[0]);
|
||||
if (substream != NULL) {
|
||||
byte = quad & 0xff;
|
||||
snd_rawmidi_receive(substream, &byte, 1);
|
||||
}
|
||||
}
|
||||
|
||||
/* Message in second port. */
|
||||
index = (quad >> 24) & 0xff;
|
||||
if (index > 0) {
|
||||
substream = READ_ONCE(ff->tx_midi_substreams[1]);
|
||||
if (substream != NULL) {
|
||||
byte = (quad >> 16) & 0xff;
|
||||
snd_rawmidi_receive(substream, &byte, 1);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
const struct snd_ff_protocol snd_ff_protocol_ff400 = {
|
||||
.handle_midi_msg = ff400_handle_midi_msg,
|
||||
.begin_session = ff400_begin_session,
|
||||
.finish_session = ff400_finish_session,
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user