1 files changed, 0 insertions, 530 deletions

diff --git a/sound/firewire/scs1x.c b/sound/firewire/scs1x.c
deleted file mode 100644
index 2dba848..0000000
--- a/sound/firewire/scs1x.c
+++ /dev/null
@@ -1,530 +0,0 @@
-/*
- * Stanton Control System 1 MIDI driver
- *
- * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
- * Licensed under the terms of the GNU General Public License, version 2.
- */
-
-#include <linux/device.h>
-#include <linux/firewire.h>
-#include <linux/firewire-constants.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/mod_devicetable.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/wait.h>
-#include <sound/core.h>
-#include <sound/initval.h>
-#include <sound/rawmidi.h>
-#include "lib.h"
-
-#define OUI_STANTON	0x001260
-#define MODEL_SCS_1M	0x001000
-#define MODEL_SCS_1D	0x002000
-
-#define HSS1394_ADDRESS			0xc007dedadadaULL
-#define HSS1394_MAX_PACKET_SIZE		64
-
-#define HSS1394_TAG_USER_DATA		0x00
-#define HSS1394_TAG_CHANGE_ADDRESS	0xf1
-
-struct scs {
-	struct snd_card *card;
-	struct fw_unit *unit;
-	struct fw_address_handler hss_handler;
-	struct fw_transaction transaction;
-	bool transaction_running;
-	bool output_idle;
-	u8 output_status;
-	u8 output_bytes;
-	bool output_escaped;
-	bool output_escape_high_nibble;
-	u8 input_escape_count;
-	struct snd_rawmidi_substream *output;
-	struct snd_rawmidi_substream *input;
-	struct tasklet_struct tasklet;
-	wait_queue_head_t idle_wait;
-	u8 *buffer;
-};
-
-static const u8 sysex_escape_prefix[] = {
-	0xf0,			/* SysEx begin */
-	0x00, 0x01, 0x60,	/* Stanton DJ */
-	0x48, 0x53, 0x53,	/* "HSS" */
-};
-
-static int scs_output_open(struct snd_rawmidi_substream *stream)
-{
-	struct scs *scs = stream->rmidi->private_data;
-
-	scs->output_status = 0;
-	scs->output_bytes = 1;
-	scs->output_escaped = false;
-
-	return 0;
-}
-
-static int scs_output_close(struct snd_rawmidi_substream *stream)
-{
-	return 0;
-}
-
-static void scs_output_trigger(struct snd_rawmidi_substream *stream, int up)
-{
-	struct scs *scs = stream->rmidi->private_data;
-
-	ACCESS_ONCE(scs->output) = up ? stream : NULL;
-	if (up) {
-		scs->output_idle = false;
-		tasklet_schedule(&scs->tasklet);
-	}
-}
-
-static void scs_write_callback(struct fw_card *card, int rcode,
-			       void *data, size_t length, void *callback_data)
-{
-	struct scs *scs = callback_data;
-
-	if (rcode == RCODE_GENERATION) {
-		/* TODO: retry this packet */
-	}
-
-	scs->transaction_running = false;
-	tasklet_schedule(&scs->tasklet);
-}
-
-static bool is_valid_running_status(u8 status)
-{
-	return status >= 0x80 && status <= 0xef;
-}
-
-static bool is_one_byte_cmd(u8 status)
-{
-	return status == 0xf6 ||
-	       status >= 0xf8;
-}
-
-static bool is_two_bytes_cmd(u8 status)
-{
-	return (status >= 0xc0 && status <= 0xdf) ||
-	       status == 0xf1 ||
-	       status == 0xf3;
-}
-
-static bool is_three_bytes_cmd(u8 status)
-{
-	return (status >= 0x80 && status <= 0xbf) ||
-	       (status >= 0xe0 && status <= 0xef) ||
-	       status == 0xf2;
-}
-
-static bool is_invalid_cmd(u8 status)
-{
-	return status == 0xf4 ||
-	       status == 0xf5 ||
-	       status == 0xf9 ||
-	       status == 0xfd;
-}
-
-static void scs_output_tasklet(unsigned long data)
-{
-	struct scs *scs = (void *)data;
-	struct snd_rawmidi_substream *stream;
-	unsigned int i;
-	u8 byte;
-	struct fw_device *dev;
-	int generation;
-
-	if (scs->transaction_running)
-		return;
-
-	stream = ACCESS_ONCE(scs->output);
-	if (!stream) {
-		scs->output_idle = true;
-		wake_up(&scs->idle_wait);
-		return;
-	}
-
-	i = scs->output_bytes;
-	for (;;) {
-		if (snd_rawmidi_transmit(stream, &byte, 1) != 1) {
-			scs->output_bytes = i;
-			scs->output_idle = true;
-			wake_up(&scs->idle_wait);
-			return;
-		}
-		/*
-		 * Convert from real MIDI to what I think the device expects (no
-		 * running status, one command per packet, unescaped SysExs).
-		 */
-		if (scs->output_escaped && byte < 0x80) {
-			if (scs->output_escape_high_nibble) {
-				if (i < HSS1394_MAX_PACKET_SIZE) {
-					scs->buffer[i] = byte << 4;
-					scs->output_escape_high_nibble = false;
-				}
-			} else {
-				scs->buffer[i++] |= byte & 0x0f;
-				scs->output_escape_high_nibble = true;
-			}
-		} else if (byte < 0x80) {
-			if (i == 1) {
-				if (!is_valid_running_status(scs->output_status))
-					continue;
-				scs->buffer[0] = HSS1394_TAG_USER_DATA;
-				scs->buffer[i++] = scs->output_status;
-			}
-			scs->buffer[i++] = byte;
-			if ((i == 3 && is_two_bytes_cmd(scs->output_status)) ||
-			    (i == 4 && is_three_bytes_cmd(scs->output_status)))
-				break;
-			if (i == 1 + ARRAY_SIZE(sysex_escape_prefix) &&
-			    !memcmp(scs->buffer + 1, sysex_escape_prefix,
-				    ARRAY_SIZE(sysex_escape_prefix))) {
-				scs->output_escaped = true;
-				scs->output_escape_high_nibble = true;
-				i = 0;
-			}
-			if (i >= HSS1394_MAX_PACKET_SIZE)
-				i = 1;
-		} else if (byte == 0xf7) {
-			if (scs->output_escaped) {
-				if (i >= 1 && scs->output_escape_high_nibble &&
-				    scs->buffer[0] != HSS1394_TAG_CHANGE_ADDRESS)
-					break;
-			} else {
-				if (i > 1 && scs->output_status == 0xf0) {
-					scs->buffer[i++] = 0xf7;
-					break;
-				}
-			}
-			i = 1;
-			scs->output_escaped = false;
-		} else if (!is_invalid_cmd(byte) &&
-			   byte < 0xf8) {
-			i = 1;
-			scs->buffer[0] = HSS1394_TAG_USER_DATA;
-			scs->buffer[i++] = byte;
-			scs->output_status = byte;
-			scs->output_escaped = false;
-			if (is_one_byte_cmd(byte))
-				break;
-		}
-	}
-	scs->output_bytes = 1;
-	scs->output_escaped = false;
-
-	scs->transaction_running = true;
-	dev = fw_parent_device(scs->unit);
-	generation = dev->generation;
-	smp_rmb(); /* node_id vs. generation */
-	fw_send_request(dev->card, &scs->transaction, TCODE_WRITE_BLOCK_REQUEST,
-			dev->node_id, generation, dev->max_speed,
-			HSS1394_ADDRESS, scs->buffer, i,
-			scs_write_callback, scs);
-}
-
-static void scs_output_drain(struct snd_rawmidi_substream *stream)
-{
-	struct scs *scs = stream->rmidi->private_data;
-
-	wait_event(scs->idle_wait, scs->output_idle);
-}
-
-static struct snd_rawmidi_ops output_ops = {
-	.open    = scs_output_open,
-	.close   = scs_output_close,
-	.trigger = scs_output_trigger,
-	.drain   = scs_output_drain,
-};
-
-static int scs_input_open(struct snd_rawmidi_substream *stream)
-{
-	struct scs *scs = stream->rmidi->private_data;
-
-	scs->input_escape_count = 0;
-
-	return 0;
-}
-
-static int scs_input_close(struct snd_rawmidi_substream *stream)
-{
-	return 0;
-}
-
-static void scs_input_trigger(struct snd_rawmidi_substream *stream, int up)
-{
-	struct scs *scs = stream->rmidi->private_data;
-
-	ACCESS_ONCE(scs->input) = up ? stream : NULL;
-}
-
-static void scs_input_escaped_byte(struct snd_rawmidi_substream *stream,
-				   u8 byte)
-{
-	u8 nibbles[2];
-
-	nibbles[0] = byte >> 4;
-	nibbles[1] = byte & 0x0f;
-	snd_rawmidi_receive(stream, nibbles, 2);
-}
-
-static void scs_input_midi_byte(struct scs *scs,
-				struct snd_rawmidi_substream *stream,
-				u8 byte)
-{
-	if (scs->input_escape_count > 0) {
-		scs_input_escaped_byte(stream, byte);
-		scs->input_escape_count--;
-		if (scs->input_escape_count == 0)
-			snd_rawmidi_receive(stream, (const u8[]) { 0xf7 }, 1);
-	} else if (byte == 0xf9) {
-		snd_rawmidi_receive(stream, sysex_escape_prefix,
-				    ARRAY_SIZE(sysex_escape_prefix));
-		scs_input_escaped_byte(stream, 0x00);
-		scs_input_escaped_byte(stream, 0xf9);
-		scs->input_escape_count = 3;
-	} else {
-		snd_rawmidi_receive(stream, &byte, 1);
-	}
-}
-
-static void scs_input_packet(struct scs *scs,
-			     struct snd_rawmidi_substream *stream,
-			     const u8 *data, unsigned int bytes)
-{
-	unsigned int i;
-
-	if (data[0] == HSS1394_TAG_USER_DATA) {
-		for (i = 1; i < bytes; ++i)
-			scs_input_midi_byte(scs, stream, data[i]);
-	} else {
-		snd_rawmidi_receive(stream, sysex_escape_prefix,
-				    ARRAY_SIZE(sysex_escape_prefix));
-		for (i = 0; i < bytes; ++i)
-			scs_input_escaped_byte(stream, data[i]);
-		snd_rawmidi_receive(stream, (const u8[]) { 0xf7 }, 1);
-	}
-}
-
-static struct snd_rawmidi_ops input_ops = {
-	.open    = scs_input_open,
-	.close   = scs_input_close,
-	.trigger = scs_input_trigger,
-};
-
-static int scs_create_midi(struct scs *scs)
-{
-	struct snd_rawmidi *rmidi;
-	int err;
-
-	err = snd_rawmidi_new(scs->card, "SCS.1x", 0, 1, 1, &rmidi);
-	if (err < 0)
-		return err;
-	snprintf(rmidi->name, sizeof(rmidi->name),
-		 "%s MIDI", scs->card->shortname);
-	rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
-	                    SNDRV_RAWMIDI_INFO_INPUT |
-	                    SNDRV_RAWMIDI_INFO_DUPLEX;
-	rmidi->private_data = scs;
-	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &output_ops);
-	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &input_ops);
-
-	return 0;
-}
-
-static void handle_hss(struct fw_card *card, struct fw_request *request,
-		       int tcode, int destination, int source, int generation,
-		       unsigned long long offset, void *data, size_t length,
-		       void *callback_data)
-{
-	struct scs *scs = callback_data;
-	struct snd_rawmidi_substream *stream;
-
-	if (offset != scs->hss_handler.offset) {
-		fw_send_response(card, request, RCODE_ADDRESS_ERROR);
-		return;
-	}
-	if (tcode != TCODE_WRITE_QUADLET_REQUEST &&
-	    tcode != TCODE_WRITE_BLOCK_REQUEST) {
-		fw_send_response(card, request, RCODE_TYPE_ERROR);
-		return;
-	}
-
-	if (length >= 1) {
-		stream = ACCESS_ONCE(scs->input);
-		if (stream)
-			scs_input_packet(scs, stream, data, length);
-	}
-
-	fw_send_response(card, request, RCODE_COMPLETE);
-}
-
-static int scs_init_hss_address(struct scs *scs)
-{
-	__be64 data;
-	int err;
-
-	data = cpu_to_be64(((u64)HSS1394_TAG_CHANGE_ADDRESS << 56) |
-			   scs->hss_handler.offset);
-	err = snd_fw_transaction(scs->unit, TCODE_WRITE_BLOCK_REQUEST,
-				 HSS1394_ADDRESS, &data, 8, 0);
-	if (err < 0)
-		dev_err(&scs->unit->device, "HSS1394 communication failed\n");
-
-	return err;
-}
-
-static void scs_card_free(struct snd_card *card)
-{
-	struct scs *scs = card->private_data;
-
-	fw_core_remove_address_handler(&scs->hss_handler);
-	kfree(scs->buffer);
-}
-
-static int scs_probe(struct fw_unit *unit, const struct ieee1394_device_id *id)
-{
-	struct fw_device *fw_dev = fw_parent_device(unit);
-	struct snd_card *card;
-	struct scs *scs;
-	int err;
-
-	err = snd_card_new(&unit->device, -16, NULL, THIS_MODULE,
-			   sizeof(*scs), &card);
-	if (err < 0)
-		return err;
-
-	scs = card->private_data;
-	scs->card = card;
-	scs->unit = unit;
-	tasklet_init(&scs->tasklet, scs_output_tasklet, (unsigned long)scs);
-	init_waitqueue_head(&scs->idle_wait);
-	scs->output_idle = true;
-
-	scs->buffer = kmalloc(HSS1394_MAX_PACKET_SIZE, GFP_KERNEL);
-	if (!scs->buffer) {
-		err = -ENOMEM;
-		goto err_card;
-	}
-
-	scs->hss_handler.length = HSS1394_MAX_PACKET_SIZE;
-	scs->hss_handler.address_callback = handle_hss;
-	scs->hss_handler.callback_data = scs;
-	err = fw_core_add_address_handler(&scs->hss_handler,
-					  &fw_high_memory_region);
-	if (err < 0)
-		goto err_buffer;
-
-	card->private_free = scs_card_free;
-
-	strcpy(card->driver, "SCS.1x");
-	strcpy(card->shortname, "SCS.1x");
-	fw_csr_string(unit->directory, CSR_MODEL,
-		      card->shortname, sizeof(card->shortname));
-	snprintf(card->longname, sizeof(card->longname),
-		 "Stanton DJ %s (GUID %08x%08x) at %s, S%d",
-		 card->shortname, fw_dev->config_rom[3], fw_dev->config_rom[4],
-		 dev_name(&unit->device), 100 << fw_dev->max_speed);
-	strcpy(card->mixername, card->shortname);
-
-	err = scs_init_hss_address(scs);
-	if (err < 0)
-		goto err_card;
-
-	err = scs_create_midi(scs);
-	if (err < 0)
-		goto err_card;
-
-	err = snd_card_register(card);
-	if (err < 0)
-		goto err_card;
-
-	dev_set_drvdata(&unit->device, scs);
-
-	return 0;
-
-err_buffer:
-	kfree(scs->buffer);
-err_card:
-	snd_card_free(card);
-	return err;
-}
-
-static void scs_update(struct fw_unit *unit)
-{
-	struct scs *scs = dev_get_drvdata(&unit->device);
-	int generation;
-	__be64 data;
-
-	data = cpu_to_be64(((u64)HSS1394_TAG_CHANGE_ADDRESS << 56) |
-			   scs->hss_handler.offset);
-	generation = fw_parent_device(unit)->generation;
-	smp_rmb(); /* node_id vs. generation */
-	snd_fw_transaction(scs->unit, TCODE_WRITE_BLOCK_REQUEST,
-			   HSS1394_ADDRESS, &data, 8,
-			   FW_FIXED_GENERATION | generation);
-}
-
-static void scs_remove(struct fw_unit *unit)
-{
-	struct scs *scs = dev_get_drvdata(&unit->device);
-
-	snd_card_disconnect(scs->card);
-
-	ACCESS_ONCE(scs->output) = NULL;
-	ACCESS_ONCE(scs->input) = NULL;
-
-	wait_event(scs->idle_wait, scs->output_idle);
-
-	tasklet_kill(&scs->tasklet);
-
-	snd_card_free_when_closed(scs->card);
-}
-
-static const struct ieee1394_device_id scs_id_table[] = {
-	{
-		.match_flags = IEEE1394_MATCH_VENDOR_ID |
-		               IEEE1394_MATCH_MODEL_ID,
-		.vendor_id   = OUI_STANTON,
-		.model_id    = MODEL_SCS_1M,
-	},
-	{
-		.match_flags = IEEE1394_MATCH_VENDOR_ID |
-		               IEEE1394_MATCH_MODEL_ID,
-		.vendor_id   = OUI_STANTON,
-		.model_id    = MODEL_SCS_1D,
-	},
-	{}
-};
-MODULE_DEVICE_TABLE(ieee1394, scs_id_table);
-
-MODULE_DESCRIPTION("SCS.1x MIDI driver");
-MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
-MODULE_LICENSE("GPL v2");
-
-static struct fw_driver scs_driver = {
-	.driver = {
-		.owner  = THIS_MODULE,
-		.name   = KBUILD_MODNAME,
-		.bus    = &fw_bus_type,
-	},
-	.probe    = scs_probe,
-	.update   = scs_update,
-	.remove   = scs_remove,
-	.id_table = scs_id_table,
-};
-
-static int __init alsa_scs1x_init(void)
-{
-	return driver_register(&scs_driver.driver);
-}
-
-static void __exit alsa_scs1x_exit(void)
-{
-	driver_unregister(&scs_driver.driver);
-}
-
-module_init(alsa_scs1x_init);
-module_exit(alsa_scs1x_exit);