Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 223 insertions, 0 deletions

diff --git a/sound/drivers/opl4/opl4_seq.c b/sound/drivers/opl4/opl4_seq.c
new file mode 100644
index 00000000000..958dfe88479
--- /dev/null
+++ b/sound/drivers/opl4/opl4_seq.c
@@ -0,0 +1,223 @@
+/*
+ * OPL4 sequencer functions
+ *
+ * Copyright (c) 2003 by Clemens Ladisch <clemens@ladisch.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed and/or modified under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "opl4_local.h"
+#include <linux/init.h>
+#include <linux/moduleparam.h>
+#include <sound/initval.h>
+
+MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
+MODULE_DESCRIPTION("OPL4 wavetable synth driver");
+MODULE_LICENSE("Dual BSD/GPL");
+
+int volume_boost = 8;
+
+module_param(volume_boost, int, 0644);
+MODULE_PARM_DESC(volume_boost, "Additional volume for OPL4 wavetable sounds.");
+
+static int snd_opl4_seq_use_inc(opl4_t *opl4)
+{
+	if (!try_module_get(opl4->card->module))
+		return -EFAULT;
+	return 0;
+}
+
+static void snd_opl4_seq_use_dec(opl4_t *opl4)
+{
+	module_put(opl4->card->module);
+}
+
+static int snd_opl4_seq_use(void *private_data, snd_seq_port_subscribe_t *info)
+{
+	opl4_t *opl4 = private_data;
+	int err;
+
+	down(&opl4->access_mutex);
+
+	if (opl4->used) {
+		up(&opl4->access_mutex);
+		return -EBUSY;
+	}
+	opl4->used++;
+
+	if (info->sender.client != SNDRV_SEQ_CLIENT_SYSTEM) {
+		err = snd_opl4_seq_use_inc(opl4);
+		if (err < 0) {
+			up(&opl4->access_mutex);
+			return err;
+		}
+	}
+
+	up(&opl4->access_mutex);
+
+	snd_opl4_synth_reset(opl4);
+	return 0;
+}
+
+static int snd_opl4_seq_unuse(void *private_data, snd_seq_port_subscribe_t *info)
+{
+	opl4_t *opl4 = private_data;
+
+	snd_opl4_synth_shutdown(opl4);
+
+	down(&opl4->access_mutex);
+	opl4->used--;
+	up(&opl4->access_mutex);
+
+	if (info->sender.client != SNDRV_SEQ_CLIENT_SYSTEM)
+		snd_opl4_seq_use_dec(opl4);
+	return 0;
+}
+
+static snd_midi_op_t opl4_ops = {
+	.note_on =		snd_opl4_note_on,
+	.note_off =		snd_opl4_note_off,
+	.note_terminate =	snd_opl4_terminate_note,
+	.control =		snd_opl4_control,
+	.sysex =		snd_opl4_sysex,
+};
+
+static int snd_opl4_seq_event_input(snd_seq_event_t *ev, int direct,
+				    void *private_data, int atomic, int hop)
+{
+	opl4_t *opl4 = private_data;
+
+	snd_midi_process_event(&opl4_ops, ev, opl4->chset);
+	return 0;
+}
+
+static void snd_opl4_seq_free_port(void *private_data)
+{
+	opl4_t *opl4 = private_data;
+
+	snd_midi_channel_free_set(opl4->chset);
+}
+
+static int snd_opl4_seq_new_device(snd_seq_device_t *dev)
+{
+	opl4_t *opl4;
+	int client;
+	snd_seq_client_callback_t callbacks;
+	snd_seq_client_info_t cinfo;
+	snd_seq_port_callback_t pcallbacks;
+
+	opl4 = *(opl4_t **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
+	if (!opl4)
+		return -EINVAL;
+
+	if (snd_yrw801_detect(opl4) < 0)
+		return -ENODEV;
+
+	opl4->chset = snd_midi_channel_alloc_set(16);
+	if (!opl4->chset)
+		return -ENOMEM;
+	opl4->chset->private_data = opl4;
+
+	/* allocate new client */
+	memset(&callbacks, 0, sizeof(callbacks));
+	callbacks.private_data = opl4;
+	callbacks.allow_output = callbacks.allow_input = 1;
+	client = snd_seq_create_kernel_client(opl4->card, opl4->seq_dev_num, &callbacks);
+	if (client < 0) {
+		snd_midi_channel_free_set(opl4->chset);
+		return client;
+	}
+	opl4->seq_client = client;
+	opl4->chset->client = client;
+
+	/* change name of client */
+	memset(&cinfo, 0, sizeof(cinfo));
+	cinfo.client = client;
+	cinfo.type = KERNEL_CLIENT;
+	strcpy(cinfo.name, "OPL4 Wavetable");
+	snd_seq_kernel_client_ctl(client, SNDRV_SEQ_IOCTL_SET_CLIENT_INFO, &cinfo);
+
+	/* create new port */
+	memset(&pcallbacks, 0, sizeof(pcallbacks));
+	pcallbacks.owner = THIS_MODULE;
+	pcallbacks.use = snd_opl4_seq_use;
+	pcallbacks.unuse = snd_opl4_seq_unuse;
+	pcallbacks.event_input = snd_opl4_seq_event_input;
+	pcallbacks.private_free = snd_opl4_seq_free_port;
+	pcallbacks.private_data = opl4;
+
+	opl4->chset->port = snd_seq_event_port_attach(client, &pcallbacks,
+						      SNDRV_SEQ_PORT_CAP_WRITE |
+						      SNDRV_SEQ_PORT_CAP_SUBS_WRITE,
+						      SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
+						      SNDRV_SEQ_PORT_TYPE_MIDI_GM,
+						      16, 24,
+						      "OPL4 Wavetable Port");
+	if (opl4->chset->port < 0) {
+		int err = opl4->chset->port;
+		snd_midi_channel_free_set(opl4->chset);
+		snd_seq_delete_kernel_client(client);
+		opl4->seq_client = -1;
+		return err;
+	}
+	return 0;
+}
+
+static int snd_opl4_seq_delete_device(snd_seq_device_t *dev)
+{
+	opl4_t *opl4;
+
+	opl4 = *(opl4_t **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
+	if (!opl4)
+		return -EINVAL;
+
+	if (opl4->seq_client >= 0) {
+		snd_seq_delete_kernel_client(opl4->seq_client);
+		opl4->seq_client = -1;
+	}
+	return 0;
+}
+
+static int __init alsa_opl4_synth_init(void)
+{
+	static snd_seq_dev_ops_t ops = {
+		snd_opl4_seq_new_device,
+		snd_opl4_seq_delete_device
+	};
+
+	return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_OPL4, &ops,
+					      sizeof(opl4_t*));
+}
+
+static void __exit alsa_opl4_synth_exit(void)
+{
+	snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_OPL4);
+}
+
+module_init(alsa_opl4_synth_init)
+module_exit(alsa_opl4_synth_exit)