^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * oxfw-scs1x.c - a part of driver for OXFW970/971 based devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (c) 2015 Takashi Sakamoto <o-takashi@sakamocchi.jp>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include "oxfw.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define HSS1394_ADDRESS 0xc007dedadadaULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define HSS1394_MAX_PACKET_SIZE 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define HSS1394_TAG_USER_DATA 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define HSS1394_TAG_CHANGE_ADDRESS 0xf1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) struct fw_scs1x {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) struct fw_address_handler hss_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) u8 input_escape_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct snd_rawmidi_substream *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* For MIDI playback. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct snd_rawmidi_substream *output;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) bool output_idle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) u8 output_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) u8 output_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) bool output_escaped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) bool output_escape_high_nibble;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct work_struct work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) wait_queue_head_t idle_wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) u8 buffer[HSS1394_MAX_PACKET_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) bool transaction_running;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct fw_transaction transaction;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) unsigned int transaction_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) bool error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct fw_device *fw_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static const u8 sysex_escape_prefix[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 0xf0, /* SysEx begin */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 0x00, 0x01, 0x60, /* Stanton DJ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 0x48, 0x53, 0x53, /* "HSS" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static void midi_input_escaped_byte(struct snd_rawmidi_substream *stream,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) u8 byte)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) u8 nibbles[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) nibbles[0] = byte >> 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) nibbles[1] = byte & 0x0f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) snd_rawmidi_receive(stream, nibbles, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static void midi_input_byte(struct fw_scs1x *scs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct snd_rawmidi_substream *stream, u8 byte)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) const u8 eox = 0xf7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (scs->input_escape_count > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) midi_input_escaped_byte(stream, byte);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) scs->input_escape_count--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) if (scs->input_escape_count == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) snd_rawmidi_receive(stream, &eox, sizeof(eox));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) } else if (byte == 0xf9) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) snd_rawmidi_receive(stream, sysex_escape_prefix,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) ARRAY_SIZE(sysex_escape_prefix));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) midi_input_escaped_byte(stream, 0x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) midi_input_escaped_byte(stream, 0xf9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) scs->input_escape_count = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) snd_rawmidi_receive(stream, &byte, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static void midi_input_packet(struct fw_scs1x *scs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) struct snd_rawmidi_substream *stream,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) const u8 *data, unsigned int bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) const u8 eox = 0xf7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (data[0] == HSS1394_TAG_USER_DATA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) for (i = 1; i < bytes; ++i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) midi_input_byte(scs, stream, data[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) snd_rawmidi_receive(stream, sysex_escape_prefix,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) ARRAY_SIZE(sysex_escape_prefix));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) for (i = 0; i < bytes; ++i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) midi_input_escaped_byte(stream, data[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) snd_rawmidi_receive(stream, &eox, sizeof(eox));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static void handle_hss(struct fw_card *card, struct fw_request *request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) int tcode, int destination, int source, int generation,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) unsigned long long offset, void *data, size_t length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) void *callback_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct fw_scs1x *scs = callback_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct snd_rawmidi_substream *stream;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) int rcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (offset != scs->hss_handler.offset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) rcode = RCODE_ADDRESS_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (tcode != TCODE_WRITE_QUADLET_REQUEST &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) tcode != TCODE_WRITE_BLOCK_REQUEST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) rcode = RCODE_TYPE_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (length >= 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) stream = READ_ONCE(scs->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) if (stream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) midi_input_packet(scs, stream, data, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) rcode = RCODE_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) fw_send_response(card, request, rcode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) static void scs_write_callback(struct fw_card *card, int rcode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) void *data, size_t length, void *callback_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct fw_scs1x *scs = callback_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (!rcode_is_permanent_error(rcode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) /* Don't retry for this data. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (rcode == RCODE_COMPLETE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) scs->transaction_bytes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) scs->error = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) scs->transaction_running = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) schedule_work(&scs->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static bool is_valid_running_status(u8 status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return status >= 0x80 && status <= 0xef;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static bool is_one_byte_cmd(u8 status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return status == 0xf6 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) status >= 0xf8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) static bool is_two_bytes_cmd(u8 status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) return (status >= 0xc0 && status <= 0xdf) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) status == 0xf1 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) status == 0xf3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) static bool is_three_bytes_cmd(u8 status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) return (status >= 0x80 && status <= 0xbf) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) (status >= 0xe0 && status <= 0xef) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) status == 0xf2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static bool is_invalid_cmd(u8 status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) return status == 0xf4 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) status == 0xf5 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) status == 0xf9 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) status == 0xfd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static void scs_output_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) struct fw_scs1x *scs = container_of(work, struct fw_scs1x, work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) struct snd_rawmidi_substream *stream;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) u8 byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) int generation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (scs->transaction_running)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) stream = READ_ONCE(scs->output);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if (!stream || scs->error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) scs->output_idle = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) wake_up(&scs->idle_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) if (scs->transaction_bytes > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) goto retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) i = scs->output_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (snd_rawmidi_transmit(stream, &byte, 1) != 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) scs->output_bytes = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) scs->output_idle = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) wake_up(&scs->idle_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * Convert from real MIDI to what I think the device expects (no
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * running status, one command per packet, unescaped SysExs).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (scs->output_escaped && byte < 0x80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) if (scs->output_escape_high_nibble) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if (i < HSS1394_MAX_PACKET_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) scs->buffer[i] = byte << 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) scs->output_escape_high_nibble = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) scs->buffer[i++] |= byte & 0x0f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) scs->output_escape_high_nibble = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) } else if (byte < 0x80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) if (i == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if (!is_valid_running_status(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) scs->output_status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) scs->buffer[0] = HSS1394_TAG_USER_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) scs->buffer[i++] = scs->output_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) scs->buffer[i++] = byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if ((i == 3 && is_two_bytes_cmd(scs->output_status)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) (i == 4 && is_three_bytes_cmd(scs->output_status)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) if (i == 1 + ARRAY_SIZE(sysex_escape_prefix) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) !memcmp(scs->buffer + 1, sysex_escape_prefix,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) ARRAY_SIZE(sysex_escape_prefix))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) scs->output_escaped = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) scs->output_escape_high_nibble = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) if (i >= HSS1394_MAX_PACKET_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) i = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) } else if (byte == 0xf7) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) if (scs->output_escaped) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) if (i >= 1 && scs->output_escape_high_nibble &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) scs->buffer[0] !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) HSS1394_TAG_CHANGE_ADDRESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) if (i > 1 && scs->output_status == 0xf0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) scs->buffer[i++] = 0xf7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) i = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) scs->output_escaped = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) } else if (!is_invalid_cmd(byte) && byte < 0xf8) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) i = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) scs->buffer[0] = HSS1394_TAG_USER_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) scs->buffer[i++] = byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) scs->output_status = byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) scs->output_escaped = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) if (is_one_byte_cmd(byte))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) scs->output_bytes = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) scs->output_escaped = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) scs->transaction_bytes = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) retry:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) scs->transaction_running = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) generation = scs->fw_dev->generation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) smp_rmb(); /* node_id vs. generation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) fw_send_request(scs->fw_dev->card, &scs->transaction,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) TCODE_WRITE_BLOCK_REQUEST, scs->fw_dev->node_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) generation, scs->fw_dev->max_speed, HSS1394_ADDRESS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) scs->buffer, scs->transaction_bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) scs_write_callback, scs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) static int midi_capture_open(struct snd_rawmidi_substream *stream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) static int midi_capture_close(struct snd_rawmidi_substream *stream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static void midi_capture_trigger(struct snd_rawmidi_substream *stream, int up)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) struct fw_scs1x *scs = stream->rmidi->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) if (up) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) scs->input_escape_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) WRITE_ONCE(scs->input, stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) WRITE_ONCE(scs->input, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) static int midi_playback_open(struct snd_rawmidi_substream *stream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) static int midi_playback_close(struct snd_rawmidi_substream *stream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) static void midi_playback_trigger(struct snd_rawmidi_substream *stream, int up)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) struct fw_scs1x *scs = stream->rmidi->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) if (up) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) scs->output_status = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) scs->output_bytes = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) scs->output_escaped = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) scs->output_idle = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) scs->transaction_bytes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) scs->error = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) WRITE_ONCE(scs->output, stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) schedule_work(&scs->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) WRITE_ONCE(scs->output, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) static void midi_playback_drain(struct snd_rawmidi_substream *stream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) struct fw_scs1x *scs = stream->rmidi->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) wait_event(scs->idle_wait, scs->output_idle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) static int register_address(struct snd_oxfw *oxfw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) struct fw_scs1x *scs = oxfw->spec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) __be64 data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) data = cpu_to_be64(((u64)HSS1394_TAG_CHANGE_ADDRESS << 56) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) scs->hss_handler.offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) return snd_fw_transaction(oxfw->unit, TCODE_WRITE_BLOCK_REQUEST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) HSS1394_ADDRESS, &data, sizeof(data), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) static void remove_scs1x(struct snd_rawmidi *rmidi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) struct fw_scs1x *scs = rmidi->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) fw_core_remove_address_handler(&scs->hss_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) void snd_oxfw_scs1x_update(struct snd_oxfw *oxfw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) register_address(oxfw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) int snd_oxfw_scs1x_add(struct snd_oxfw *oxfw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) static const struct snd_rawmidi_ops midi_capture_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) .open = midi_capture_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) .close = midi_capture_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) .trigger = midi_capture_trigger,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) static const struct snd_rawmidi_ops midi_playback_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) .open = midi_playback_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) .close = midi_playback_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) .trigger = midi_playback_trigger,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) .drain = midi_playback_drain,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) struct snd_rawmidi *rmidi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) struct fw_scs1x *scs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) scs = devm_kzalloc(&oxfw->card->card_dev, sizeof(struct fw_scs1x),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) if (!scs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) scs->fw_dev = fw_parent_device(oxfw->unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) oxfw->spec = scs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) /* Allocate own handler for imcoming asynchronous transaction. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) scs->hss_handler.length = HSS1394_MAX_PACKET_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) scs->hss_handler.address_callback = handle_hss;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) scs->hss_handler.callback_data = scs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) err = fw_core_add_address_handler(&scs->hss_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) &fw_high_memory_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) err = register_address(oxfw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) goto err_allocated;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) /* Use unique name for backward compatibility to scs1x module. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) err = snd_rawmidi_new(oxfw->card, "SCS.1x", 0, 1, 1, &rmidi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) goto err_allocated;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) rmidi->private_data = scs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) rmidi->private_free = remove_scs1x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) snprintf(rmidi->name, sizeof(rmidi->name),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) "%s MIDI", oxfw->card->shortname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) rmidi->info_flags = SNDRV_RAWMIDI_INFO_INPUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) SNDRV_RAWMIDI_INFO_OUTPUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) SNDRV_RAWMIDI_INFO_DUPLEX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) &midi_capture_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) &midi_playback_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) INIT_WORK(&scs->work, scs_output_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) init_waitqueue_head(&scs->idle_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) scs->output_idle = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) err_allocated:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) fw_core_remove_address_handler(&scs->hss_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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