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>hifive-unleashed-5.1
Takashi Sakamoto
Takashi Iwai
parent
e199d1eb7f
commit
9dd466aca3
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@ -1,4 +1,3 @@
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snd-fireface-objs := ff.o ff-transaction.o ff-midi.o ff-proc.o amdtp-ff.o \
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ff-stream.o ff-pcm.o ff-hwdep.o ff-protocol-ff400.o \
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ff-protocol-former.o
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ff-stream.o ff-pcm.o ff-hwdep.o ff-protocol-former.o
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obj-$(CONFIG_SND_FIREFACE) += snd-fireface.o
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@ -1,161 +0,0 @@
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/*
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* ff-protocol-ff400.c - a part of driver for RME Fireface series
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*
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* Copyright (c) 2015-2017 Takashi Sakamoto
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*
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* Licensed under the terms of the GNU General Public License, version 2.
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*/
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#include <linux/delay.h>
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#include "ff.h"
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#define FF400_STF 0x000080100500ull
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#define FF400_RX_PACKET_FORMAT 0x000080100504ull
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#define FF400_ISOC_COMM_START 0x000080100508ull
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#define FF400_TX_PACKET_FORMAT 0x00008010050cull
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#define FF400_ISOC_COMM_STOP 0x000080100510ull
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/*
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* Fireface 400 manages isochronous channel number in 3 bit field. Therefore,
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* we can allocate between 0 and 7 channel.
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*/
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static int keep_resources(struct snd_ff *ff, unsigned int rate)
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{
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enum snd_ff_stream_mode mode;
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int i;
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int err;
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// Check whether the given value is supported or not.
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for (i = 0; i < CIP_SFC_COUNT; i++) {
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if (amdtp_rate_table[i] == rate)
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break;
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}
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if (i >= CIP_SFC_COUNT)
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return -EINVAL;
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err = snd_ff_stream_get_multiplier_mode(i, &mode);
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if (err < 0)
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return err;
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/* Keep resources for in-stream. */
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ff->tx_resources.channels_mask = 0x00000000000000ffuLL;
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err = fw_iso_resources_allocate(&ff->tx_resources,
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amdtp_stream_get_max_payload(&ff->tx_stream),
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fw_parent_device(ff->unit)->max_speed);
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if (err < 0)
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return err;
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/* Keep resources for out-stream. */
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err = amdtp_ff_set_parameters(&ff->rx_stream, rate,
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ff->spec->pcm_playback_channels[mode]);
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if (err < 0)
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return err;
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ff->rx_resources.channels_mask = 0x00000000000000ffuLL;
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err = fw_iso_resources_allocate(&ff->rx_resources,
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amdtp_stream_get_max_payload(&ff->rx_stream),
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fw_parent_device(ff->unit)->max_speed);
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if (err < 0)
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fw_iso_resources_free(&ff->tx_resources);
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return err;
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}
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static int ff400_begin_session(struct snd_ff *ff, unsigned int rate)
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{
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__le32 reg;
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int err;
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err = keep_resources(ff, rate);
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if (err < 0)
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return err;
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/* Set the number of data blocks transferred in a second. */
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reg = cpu_to_le32(rate);
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err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
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FF400_STF, ®, sizeof(reg), 0);
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if (err < 0)
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return err;
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msleep(100);
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/*
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* Set isochronous channel and the number of quadlets of received
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* packets.
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*/
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reg = cpu_to_le32(((ff->rx_stream.data_block_quadlets << 3) << 8) |
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ff->rx_resources.channel);
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err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
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FF400_RX_PACKET_FORMAT, ®, sizeof(reg), 0);
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if (err < 0)
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return err;
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/*
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* Set isochronous channel and the number of quadlets of transmitted
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* packet.
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*/
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/* TODO: investigate the purpose of this 0x80. */
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reg = cpu_to_le32((0x80 << 24) |
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(ff->tx_resources.channel << 5) |
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(ff->tx_stream.data_block_quadlets));
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err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
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FF400_TX_PACKET_FORMAT, ®, sizeof(reg), 0);
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if (err < 0)
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return err;
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/* Allow to transmit packets. */
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reg = cpu_to_le32(0x00000001);
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return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
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FF400_ISOC_COMM_START, ®, sizeof(reg), 0);
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}
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static void ff400_finish_session(struct snd_ff *ff)
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{
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__le32 reg;
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reg = cpu_to_le32(0x80000000);
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snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
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FF400_ISOC_COMM_STOP, ®, sizeof(reg), 0);
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}
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static void ff400_handle_midi_msg(struct snd_ff *ff, __le32 *buf, size_t length)
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{
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int i;
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for (i = 0; i < length / 4; i++) {
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u32 quad = le32_to_cpu(buf[i]);
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u8 byte;
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unsigned int index;
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struct snd_rawmidi_substream *substream;
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/* Message in first port. */
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/*
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* This value may represent the index of this unit when the same
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* units are on the same IEEE 1394 bus. This driver doesn't use
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* it.
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*/
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index = (quad >> 8) & 0xff;
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if (index > 0) {
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substream = READ_ONCE(ff->tx_midi_substreams[0]);
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if (substream != NULL) {
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byte = quad & 0xff;
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snd_rawmidi_receive(substream, &byte, 1);
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}
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}
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/* Message in second port. */
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index = (quad >> 24) & 0xff;
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if (index > 0) {
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substream = READ_ONCE(ff->tx_midi_substreams[1]);
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if (substream != NULL) {
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byte = (quad >> 16) & 0xff;
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snd_rawmidi_receive(substream, &byte, 1);
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}
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}
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}
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}
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const struct snd_ff_protocol snd_ff_protocol_ff400 = {
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.handle_midi_msg = ff400_handle_midi_msg,
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.begin_session = ff400_begin_session,
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.finish_session = ff400_finish_session,
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};
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@ -140,3 +140,150 @@ const struct snd_ff_protocol snd_ff_protocol_ff800 = {
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.begin_session = ff800_begin_session,
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.finish_session = ff800_finish_session,
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};
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#define FF400_STF 0x000080100500ull
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#define FF400_RX_PACKET_FORMAT 0x000080100504ull
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#define FF400_ISOC_COMM_START 0x000080100508ull
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#define FF400_TX_PACKET_FORMAT 0x00008010050cull
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#define FF400_ISOC_COMM_STOP 0x000080100510ull
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/*
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* Fireface 400 manages isochronous channel number in 3 bit field. Therefore,
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* we can allocate between 0 and 7 channel.
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*/
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static int keep_resources(struct snd_ff *ff, unsigned int rate)
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{
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enum snd_ff_stream_mode mode;
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int i;
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int err;
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// Check whether the given value is supported or not.
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for (i = 0; i < CIP_SFC_COUNT; i++) {
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if (amdtp_rate_table[i] == rate)
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break;
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}
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if (i >= CIP_SFC_COUNT)
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return -EINVAL;
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err = snd_ff_stream_get_multiplier_mode(i, &mode);
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if (err < 0)
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return err;
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/* Keep resources for in-stream. */
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ff->tx_resources.channels_mask = 0x00000000000000ffuLL;
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err = fw_iso_resources_allocate(&ff->tx_resources,
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amdtp_stream_get_max_payload(&ff->tx_stream),
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fw_parent_device(ff->unit)->max_speed);
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if (err < 0)
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return err;
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/* Keep resources for out-stream. */
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ff->rx_resources.channels_mask = 0x00000000000000ffuLL;
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err = fw_iso_resources_allocate(&ff->rx_resources,
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amdtp_stream_get_max_payload(&ff->rx_stream),
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fw_parent_device(ff->unit)->max_speed);
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if (err < 0)
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fw_iso_resources_free(&ff->tx_resources);
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return err;
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}
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static int ff400_begin_session(struct snd_ff *ff, unsigned int rate)
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{
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__le32 reg;
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int err;
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err = keep_resources(ff, rate);
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if (err < 0)
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return err;
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/* Set the number of data blocks transferred in a second. */
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reg = cpu_to_le32(rate);
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err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
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FF400_STF, ®, sizeof(reg), 0);
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if (err < 0)
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return err;
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msleep(100);
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/*
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* Set isochronous channel and the number of quadlets of received
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* packets.
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*/
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reg = cpu_to_le32(((ff->rx_stream.data_block_quadlets << 3) << 8) |
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ff->rx_resources.channel);
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err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
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FF400_RX_PACKET_FORMAT, ®, sizeof(reg), 0);
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if (err < 0)
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return err;
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/*
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* Set isochronous channel and the number of quadlets of transmitted
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* packet.
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*/
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/* TODO: investigate the purpose of this 0x80. */
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reg = cpu_to_le32((0x80 << 24) |
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(ff->tx_resources.channel << 5) |
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(ff->tx_stream.data_block_quadlets));
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err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
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FF400_TX_PACKET_FORMAT, ®, sizeof(reg), 0);
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if (err < 0)
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return err;
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/* Allow to transmit packets. */
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reg = cpu_to_le32(0x00000001);
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return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
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FF400_ISOC_COMM_START, ®, sizeof(reg), 0);
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}
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static void ff400_finish_session(struct snd_ff *ff)
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{
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__le32 reg;
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reg = cpu_to_le32(0x80000000);
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snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
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FF400_ISOC_COMM_STOP, ®, sizeof(reg), 0);
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}
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static void ff400_handle_midi_msg(struct snd_ff *ff, __le32 *buf, size_t length)
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{
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int i;
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for (i = 0; i < length / 4; i++) {
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u32 quad = le32_to_cpu(buf[i]);
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u8 byte;
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unsigned int index;
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struct snd_rawmidi_substream *substream;
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/* Message in first port. */
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/*
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* This value may represent the index of this unit when the same
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* units are on the same IEEE 1394 bus. This driver doesn't use
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* it.
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*/
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index = (quad >> 8) & 0xff;
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if (index > 0) {
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substream = READ_ONCE(ff->tx_midi_substreams[0]);
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if (substream != NULL) {
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byte = quad & 0xff;
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snd_rawmidi_receive(substream, &byte, 1);
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}
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}
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/* Message in second port. */
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index = (quad >> 24) & 0xff;
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if (index > 0) {
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substream = READ_ONCE(ff->tx_midi_substreams[1]);
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if (substream != NULL) {
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byte = (quad >> 16) & 0xff;
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snd_rawmidi_receive(substream, &byte, 1);
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}
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}
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}
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}
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const struct snd_ff_protocol snd_ff_protocol_ff400 = {
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.handle_midi_msg = ff400_handle_midi_msg,
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.begin_session = ff400_begin_session,
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.finish_session = ff400_finish_session,
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};
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