From: Takashi Sakamoto Date: Sun, 20 Jan 2019 08:25:45 +0000 (+0900) Subject: ALSA: fireface: rename protocol layer for former models X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=e199d1eb7f5dbc8e5127af08726a8b6452e2641f;p=openwrt%2Fstaging%2Fblogic.git ALSA: fireface: rename protocol layer for former models In a series of Fireface, later model supports different protocol from former models. This commit is a preparation to support both of protocols. Signed-off-by: Takashi Sakamoto Signed-off-by: Takashi Iwai --- diff --git a/sound/firewire/fireface/Makefile b/sound/firewire/fireface/Makefile index 79a7d6d99d72..3fb586d32584 100644 --- a/sound/firewire/fireface/Makefile +++ b/sound/firewire/fireface/Makefile @@ -1,4 +1,4 @@ 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-ff800.o + ff-protocol-former.o obj-$(CONFIG_SND_FIREFACE) += snd-fireface.o diff --git a/sound/firewire/fireface/ff-protocol-ff800.c b/sound/firewire/fireface/ff-protocol-ff800.c deleted file mode 100644 index 2acbf6039770..000000000000 --- a/sound/firewire/fireface/ff-protocol-ff800.c +++ /dev/null @@ -1,143 +0,0 @@ -/* - * ff-protocol-ff800.c - a part of driver for RME Fireface series - * - * Copyright (c) 2018 Takashi Sakamoto - * - * Licensed under the terms of the GNU General Public License, version 2. - */ - -#include - -#include "ff.h" - -#define FF800_STF 0x0000fc88f000 -#define FF800_RX_PACKET_FORMAT 0x0000fc88f004 -#define FF800_ALLOC_TX_STREAM 0x0000fc88f008 -#define FF800_ISOC_COMM_START 0x0000fc88f00c -#define FF800_TX_S800_FLAG 0x00000800 -#define FF800_ISOC_COMM_STOP 0x0000fc88f010 - -#define FF800_TX_PACKET_ISOC_CH 0x0000801c0008 - -static int allocate_rx_resources(struct snd_ff *ff) -{ - u32 data; - __le32 reg; - int err; - - // Controllers should allocate isochronous resources for rx stream. - 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) - return err; - - // Set isochronous channel and the number of quadlets of rx packets. - data = ff->rx_stream.data_block_quadlets << 3; - data = (data << 8) | ff->rx_resources.channel; - reg = cpu_to_le32(data); - return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST, - FF800_RX_PACKET_FORMAT, ®, sizeof(reg), 0); -} - -static int allocate_tx_resources(struct snd_ff *ff) -{ - __le32 reg; - unsigned int count; - unsigned int tx_isoc_channel; - int err; - - reg = cpu_to_le32(ff->tx_stream.data_block_quadlets); - err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST, - FF800_ALLOC_TX_STREAM, ®, sizeof(reg), 0); - if (err < 0) - return err; - - // Wait till the format of tx packet is available. - count = 0; - while (count++ < 10) { - u32 data; - err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST, - FF800_TX_PACKET_ISOC_CH, ®, sizeof(reg), 0); - if (err < 0) - return err; - - data = le32_to_cpu(reg); - if (data != 0xffffffff) { - tx_isoc_channel = data; - break; - } - - msleep(50); - } - if (count >= 10) - return -ETIMEDOUT; - - // NOTE: this is a makeshift to start OHCI 1394 IR context in the - // channel. On the other hand, 'struct fw_iso_resources.allocated' is - // not true and it's not deallocated at stop. - ff->tx_resources.channel = tx_isoc_channel; - - return 0; -} - -static int ff800_begin_session(struct snd_ff *ff, unsigned int rate) -{ - __le32 reg; - int err; - - reg = cpu_to_le32(rate); - err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST, - FF800_STF, ®, sizeof(reg), 0); - if (err < 0) - return err; - - // If starting isochronous communication immediately, change of STF has - // no effect. In this case, the communication runs based on former STF. - // Let's sleep for a bit. - msleep(100); - - err = allocate_rx_resources(ff); - if (err < 0) - return err; - - err = allocate_tx_resources(ff); - if (err < 0) - return err; - - reg = cpu_to_le32(0x80000000); - reg |= cpu_to_le32(ff->tx_stream.data_block_quadlets); - if (fw_parent_device(ff->unit)->max_speed == SCODE_800) - reg |= cpu_to_le32(FF800_TX_S800_FLAG); - return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST, - FF800_ISOC_COMM_START, ®, sizeof(reg), 0); -} - -static void ff800_finish_session(struct snd_ff *ff) -{ - __le32 reg; - - reg = cpu_to_le32(0x80000000); - snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST, - FF800_ISOC_COMM_STOP, ®, sizeof(reg), 0); -} - -static void ff800_handle_midi_msg(struct snd_ff *ff, __le32 *buf, size_t length) -{ - int i; - - for (i = 0; i < length / 4; i++) { - u8 byte = le32_to_cpu(buf[i]) & 0xff; - struct snd_rawmidi_substream *substream; - - substream = READ_ONCE(ff->tx_midi_substreams[0]); - if (substream) - snd_rawmidi_receive(substream, &byte, 1); - } -} - -const struct snd_ff_protocol snd_ff_protocol_ff800 = { - .handle_midi_msg = ff800_handle_midi_msg, - .begin_session = ff800_begin_session, - .finish_session = ff800_finish_session, -}; diff --git a/sound/firewire/fireface/ff-protocol-former.c b/sound/firewire/fireface/ff-protocol-former.c new file mode 100644 index 000000000000..a383fd5fc879 --- /dev/null +++ b/sound/firewire/fireface/ff-protocol-former.c @@ -0,0 +1,142 @@ +// SPDX-License-Identifier: GPL-2.0 +// ff-protocol-former.c - a part of driver for RME Fireface series +// +// Copyright (c) 2019 Takashi Sakamoto +// +// Licensed under the terms of the GNU General Public License, version 2. + +#include + +#include "ff.h" + +#define FF800_STF 0x0000fc88f000 +#define FF800_RX_PACKET_FORMAT 0x0000fc88f004 +#define FF800_ALLOC_TX_STREAM 0x0000fc88f008 +#define FF800_ISOC_COMM_START 0x0000fc88f00c +#define FF800_TX_S800_FLAG 0x00000800 +#define FF800_ISOC_COMM_STOP 0x0000fc88f010 + +#define FF800_TX_PACKET_ISOC_CH 0x0000801c0008 + +static int allocate_rx_resources(struct snd_ff *ff) +{ + u32 data; + __le32 reg; + int err; + + // Controllers should allocate isochronous resources for rx stream. + 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) + return err; + + // Set isochronous channel and the number of quadlets of rx packets. + data = ff->rx_stream.data_block_quadlets << 3; + data = (data << 8) | ff->rx_resources.channel; + reg = cpu_to_le32(data); + return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST, + FF800_RX_PACKET_FORMAT, ®, sizeof(reg), 0); +} + +static int allocate_tx_resources(struct snd_ff *ff) +{ + __le32 reg; + unsigned int count; + unsigned int tx_isoc_channel; + int err; + + reg = cpu_to_le32(ff->tx_stream.data_block_quadlets); + err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST, + FF800_ALLOC_TX_STREAM, ®, sizeof(reg), 0); + if (err < 0) + return err; + + // Wait till the format of tx packet is available. + count = 0; + while (count++ < 10) { + u32 data; + err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST, + FF800_TX_PACKET_ISOC_CH, ®, sizeof(reg), 0); + if (err < 0) + return err; + + data = le32_to_cpu(reg); + if (data != 0xffffffff) { + tx_isoc_channel = data; + break; + } + + msleep(50); + } + if (count >= 10) + return -ETIMEDOUT; + + // NOTE: this is a makeshift to start OHCI 1394 IR context in the + // channel. On the other hand, 'struct fw_iso_resources.allocated' is + // not true and it's not deallocated at stop. + ff->tx_resources.channel = tx_isoc_channel; + + return 0; +} + +static int ff800_begin_session(struct snd_ff *ff, unsigned int rate) +{ + __le32 reg; + int err; + + reg = cpu_to_le32(rate); + err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST, + FF800_STF, ®, sizeof(reg), 0); + if (err < 0) + return err; + + // If starting isochronous communication immediately, change of STF has + // no effect. In this case, the communication runs based on former STF. + // Let's sleep for a bit. + msleep(100); + + err = allocate_rx_resources(ff); + if (err < 0) + return err; + + err = allocate_tx_resources(ff); + if (err < 0) + return err; + + reg = cpu_to_le32(0x80000000); + reg |= cpu_to_le32(ff->tx_stream.data_block_quadlets); + if (fw_parent_device(ff->unit)->max_speed == SCODE_800) + reg |= cpu_to_le32(FF800_TX_S800_FLAG); + return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST, + FF800_ISOC_COMM_START, ®, sizeof(reg), 0); +} + +static void ff800_finish_session(struct snd_ff *ff) +{ + __le32 reg; + + reg = cpu_to_le32(0x80000000); + snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST, + FF800_ISOC_COMM_STOP, ®, sizeof(reg), 0); +} + +static void ff800_handle_midi_msg(struct snd_ff *ff, __le32 *buf, size_t length) +{ + int i; + + for (i = 0; i < length / 4; i++) { + u8 byte = le32_to_cpu(buf[i]) & 0xff; + struct snd_rawmidi_substream *substream; + + substream = READ_ONCE(ff->tx_midi_substreams[0]); + if (substream) + snd_rawmidi_receive(substream, &byte, 1); + } +} + +const struct snd_ff_protocol snd_ff_protocol_ff800 = { + .handle_midi_msg = ff800_handle_midi_msg, + .begin_session = ff800_begin_session, + .finish_session = ff800_finish_session, +};