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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/drivers/opl3/opl3_seq.c
downloadlinux-2.6.34-ux500-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
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!
Diffstat (limited to 'sound/drivers/opl3/opl3_seq.c')
-rw-r--r--sound/drivers/opl3/opl3_seq.c314
1 files changed, 314 insertions, 0 deletions
diff --git a/sound/drivers/opl3/opl3_seq.c b/sound/drivers/opl3/opl3_seq.c
new file mode 100644
index 00000000000..136964b844d
--- /dev/null
+++ b/sound/drivers/opl3/opl3_seq.c
@@ -0,0 +1,314 @@
+/*
+ * Copyright (c) by Uros Bizjak <uros@kss-loka.si>
+ *
+ * Midi Sequencer interface routines for OPL2/OPL3/OPL4 FM
+ *
+ * OPL2/3 FM instrument loader:
+ * alsa-tools/seq/sbiload/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include "opl3_voice.h"
+#include <linux/init.h>
+#include <linux/moduleparam.h>
+#include <sound/initval.h>
+
+MODULE_AUTHOR("Uros Bizjak <uros@kss-loka.si>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("ALSA driver for OPL3 FM synth");
+
+int use_internal_drums = 0;
+module_param(use_internal_drums, bool, 0444);
+MODULE_PARM_DESC(use_internal_drums, "Enable internal OPL2/3 drums.");
+
+int snd_opl3_synth_use_inc(opl3_t * opl3)
+{
+ if (!try_module_get(opl3->card->module))
+ return -EFAULT;
+ return 0;
+
+}
+
+void snd_opl3_synth_use_dec(opl3_t * opl3)
+{
+ module_put(opl3->card->module);
+}
+
+int snd_opl3_synth_setup(opl3_t * opl3)
+{
+ int idx;
+
+ down(&opl3->access_mutex);
+ if (opl3->used) {
+ up(&opl3->access_mutex);
+ return -EBUSY;
+ }
+ opl3->used++;
+ up(&opl3->access_mutex);
+
+ snd_opl3_reset(opl3);
+
+ for (idx = 0; idx < MAX_OPL3_VOICES; idx++) {
+ opl3->voices[idx].state = SNDRV_OPL3_ST_OFF;
+ opl3->voices[idx].time = 0;
+ opl3->voices[idx].keyon_reg = 0x00;
+ }
+ opl3->use_time = 0;
+ opl3->connection_reg = 0x00;
+ if (opl3->hardware >= OPL3_HW_OPL3) {
+ /* Clear 4-op connections */
+ opl3->command(opl3, OPL3_RIGHT | OPL3_REG_CONNECTION_SELECT,
+ opl3->connection_reg);
+ opl3->max_voices = MAX_OPL3_VOICES;
+ }
+ return 0;
+}
+
+void snd_opl3_synth_cleanup(opl3_t * opl3)
+{
+ unsigned long flags;
+
+ /* Stop system timer */
+ spin_lock_irqsave(&opl3->sys_timer_lock, flags);
+ if (opl3->sys_timer_status) {
+ del_timer(&opl3->tlist);
+ opl3->sys_timer_status = 0;
+ }
+ spin_unlock_irqrestore(&opl3->sys_timer_lock, flags);
+
+ snd_opl3_reset(opl3);
+ down(&opl3->access_mutex);
+ opl3->used--;
+ up(&opl3->access_mutex);
+}
+
+static int snd_opl3_synth_use(void *private_data, snd_seq_port_subscribe_t * info)
+{
+ opl3_t *opl3 = private_data;
+ int err;
+
+ if ((err = snd_opl3_synth_setup(opl3)) < 0)
+ return err;
+
+ if (use_internal_drums) {
+ /* Percussion mode */
+ opl3->voices[6].state = opl3->voices[7].state =
+ opl3->voices[8].state = SNDRV_OPL3_ST_NOT_AVAIL;
+ snd_opl3_load_drums(opl3);
+ opl3->drum_reg = OPL3_PERCUSSION_ENABLE;
+ opl3->command(opl3, OPL3_LEFT | OPL3_REG_PERCUSSION, opl3->drum_reg);
+ } else {
+ opl3->drum_reg = 0x00;
+ }
+
+ if (info->sender.client != SNDRV_SEQ_CLIENT_SYSTEM) {
+ if ((err = snd_opl3_synth_use_inc(opl3)) < 0)
+ return err;
+ }
+ opl3->synth_mode = SNDRV_OPL3_MODE_SEQ;
+ return 0;
+}
+
+static int snd_opl3_synth_unuse(void *private_data, snd_seq_port_subscribe_t * info)
+{
+ opl3_t *opl3 = private_data;
+
+ snd_opl3_synth_cleanup(opl3);
+
+ if (info->sender.client != SNDRV_SEQ_CLIENT_SYSTEM)
+ snd_opl3_synth_use_dec(opl3);
+ return 0;
+}
+
+/*
+ * MIDI emulation operators
+ */
+snd_midi_op_t opl3_ops = {
+ .note_on = snd_opl3_note_on,
+ .note_off = snd_opl3_note_off,
+ .key_press = snd_opl3_key_press,
+ .note_terminate = snd_opl3_terminate_note,
+ .control = snd_opl3_control,
+ .nrpn = snd_opl3_nrpn,
+ .sysex = snd_opl3_sysex,
+};
+
+static int snd_opl3_synth_event_input(snd_seq_event_t * ev, int direct,
+ void *private_data, int atomic, int hop)
+{
+ opl3_t *opl3 = private_data;
+
+ if (ev->type >= SNDRV_SEQ_EVENT_INSTR_BEGIN &&
+ ev->type <= SNDRV_SEQ_EVENT_INSTR_CHANGE) {
+ if (direct) {
+ snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, ev,
+ opl3->seq_client, atomic, hop);
+ }
+ } else {
+ snd_midi_process_event(&opl3_ops, ev, opl3->chset);
+ }
+ return 0;
+}
+
+/* ------------------------------ */
+
+static void snd_opl3_synth_free_port(void *private_data)
+{
+ opl3_t *opl3 = private_data;
+
+ snd_midi_channel_free_set(opl3->chset);
+}
+
+static int snd_opl3_synth_create_port(opl3_t * opl3)
+{
+ snd_seq_port_callback_t callbacks;
+ char name[32];
+ int voices, opl_ver;
+
+ voices = (opl3->hardware < OPL3_HW_OPL3) ?
+ MAX_OPL2_VOICES : MAX_OPL3_VOICES;
+ opl3->chset = snd_midi_channel_alloc_set(16);
+ if (opl3->chset == NULL)
+ return -ENOMEM;
+ opl3->chset->private_data = opl3;
+
+ memset(&callbacks, 0, sizeof(callbacks));
+ callbacks.owner = THIS_MODULE;
+ callbacks.use = snd_opl3_synth_use;
+ callbacks.unuse = snd_opl3_synth_unuse;
+ callbacks.event_input = snd_opl3_synth_event_input;
+ callbacks.private_free = snd_opl3_synth_free_port;
+ callbacks.private_data = opl3;
+
+ opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
+ sprintf(name, "OPL%i FM Port", opl_ver);
+
+ opl3->chset->client = opl3->seq_client;
+ opl3->chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks,
+ SNDRV_SEQ_PORT_CAP_WRITE |
+ SNDRV_SEQ_PORT_CAP_SUBS_WRITE,
+ SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
+ SNDRV_SEQ_PORT_TYPE_MIDI_GM |
+ SNDRV_SEQ_PORT_TYPE_SYNTH,
+ 16, voices,
+ name);
+ if (opl3->chset->port < 0) {
+ snd_midi_channel_free_set(opl3->chset);
+ return opl3->chset->port;
+ }
+ return 0;
+}
+
+/* ------------------------------ */
+
+static int snd_opl3_seq_new_device(snd_seq_device_t *dev)
+{
+ opl3_t *opl3;
+ int client;
+ snd_seq_client_callback_t callbacks;
+ snd_seq_client_info_t cinfo;
+ int opl_ver;
+
+ opl3 = *(opl3_t **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
+ if (opl3 == NULL)
+ return -EINVAL;
+
+ spin_lock_init(&opl3->voice_lock);
+
+ opl3->seq_client = -1;
+
+ /* allocate new client */
+ memset(&callbacks, 0, sizeof(callbacks));
+ callbacks.private_data = opl3;
+ callbacks.allow_output = callbacks.allow_input = 1;
+ client = opl3->seq_client =
+ snd_seq_create_kernel_client(opl3->card, opl3->seq_dev_num, &callbacks);
+ if (client < 0)
+ return client;
+
+ /* change name of client */
+ memset(&cinfo, 0, sizeof(cinfo));
+ cinfo.client = client;
+ cinfo.type = KERNEL_CLIENT;
+ opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
+ sprintf(cinfo.name, "OPL%i FM synth", opl_ver);
+ snd_seq_kernel_client_ctl(client, SNDRV_SEQ_IOCTL_SET_CLIENT_INFO, &cinfo);
+
+ snd_opl3_synth_create_port(opl3);
+
+ /* initialize instrument list */
+ opl3->ilist = snd_seq_instr_list_new();
+ if (opl3->ilist == NULL) {
+ snd_seq_delete_kernel_client(client);
+ opl3->seq_client = -1;
+ return -ENOMEM;
+ }
+ opl3->ilist->flags = SNDRV_SEQ_INSTR_FLG_DIRECT;
+ snd_seq_fm_init(&opl3->fm_ops, NULL);
+
+ /* setup system timer */
+ init_timer(&opl3->tlist);
+ opl3->tlist.function = snd_opl3_timer_func;
+ opl3->tlist.data = (unsigned long) opl3;
+ spin_lock_init(&opl3->sys_timer_lock);
+ opl3->sys_timer_status = 0;
+
+#ifdef CONFIG_SND_SEQUENCER_OSS
+ snd_opl3_init_seq_oss(opl3, cinfo.name);
+#endif
+ return 0;
+}
+
+static int snd_opl3_seq_delete_device(snd_seq_device_t *dev)
+{
+ opl3_t *opl3;
+
+ opl3 = *(opl3_t **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
+ if (opl3 == NULL)
+ return -EINVAL;
+
+#ifdef CONFIG_SND_SEQUENCER_OSS
+ snd_opl3_free_seq_oss(opl3);
+#endif
+ if (opl3->seq_client >= 0) {
+ snd_seq_delete_kernel_client(opl3->seq_client);
+ opl3->seq_client = -1;
+ }
+ if (opl3->ilist)
+ snd_seq_instr_list_free(&opl3->ilist);
+ return 0;
+}
+
+static int __init alsa_opl3_seq_init(void)
+{
+ static snd_seq_dev_ops_t ops =
+ {
+ snd_opl3_seq_new_device,
+ snd_opl3_seq_delete_device
+ };
+
+ return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_OPL3, &ops,
+ sizeof(opl3_t*));
+}
+
+static void __exit alsa_opl3_seq_exit(void)
+{
+ snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_OPL3);
+}
+
+module_init(alsa_opl3_seq_init)
+module_exit(alsa_opl3_seq_exit)