1/*
2 *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
3 *     and (c) 1999 Steve Ratcliffe <steve@parabola.demon.co.uk>
4 *  Copyright (C) 1999-2000 Takashi Iwai <tiwai@suse.de>
5 *
6 *  Emu8000 synth plug-in routine
7 *
8 *   This program is free software; you can redistribute it and/or modify
9 *   it under the terms of the GNU General Public License as published by
10 *   the Free Software Foundation; either version 2 of the License, or
11 *   (at your option) any later version.
12 *
13 *   This program is distributed in the hope that it will be useful,
14 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
15 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 *   GNU General Public License for more details.
17 *
18 *   You should have received a copy of the GNU General Public License
19 *   along with this program; if not, write to the Free Software
20 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
21 */
22
23#include "emu8000_local.h"
24#include <linux/init.h>
25#include <sound/initval.h>
26
27MODULE_AUTHOR("Takashi Iwai, Steve Ratcliffe");
28MODULE_DESCRIPTION("Emu8000 synth plug-in routine");
29MODULE_LICENSE("GPL");
30
31/*----------------------------------------------------------------*/
32
33/*
34 * create a new hardware dependent device for Emu8000
35 */
36static int snd_emu8000_new_device(struct snd_seq_device *dev)
37{
38	struct snd_emu8000 *hw;
39	struct snd_emux *emu;
40
41	hw = *(struct snd_emu8000**)SNDRV_SEQ_DEVICE_ARGPTR(dev);
42	if (hw == NULL)
43		return -EINVAL;
44
45	if (hw->emu)
46		return -EBUSY; /* already exists..? */
47
48	if (snd_emux_new(&emu) < 0)
49		return -ENOMEM;
50
51	hw->emu = emu;
52	snd_emu8000_ops_setup(hw);
53
54	emu->hw = hw;
55	emu->max_voices = EMU8000_DRAM_VOICES;
56	emu->num_ports = hw->seq_ports;
57
58	if (hw->memhdr) {
59		snd_printk(KERN_ERR "memhdr is already initialized!?\n");
60		snd_util_memhdr_free(hw->memhdr);
61	}
62	hw->memhdr = snd_util_memhdr_new(hw->mem_size);
63	if (hw->memhdr == NULL) {
64		snd_emux_free(emu);
65		hw->emu = NULL;
66		return -ENOMEM;
67	}
68
69	emu->memhdr = hw->memhdr;
70	emu->midi_ports = hw->seq_ports < 2 ? hw->seq_ports : 2; /* number of virmidi ports */
71	emu->midi_devidx = 1;
72	emu->linear_panning = 1;
73	emu->hwdep_idx = 2; /* FIXED */
74
75	if (snd_emux_register(emu, dev->card, hw->index, "Emu8000") < 0) {
76		snd_emux_free(emu);
77		snd_util_memhdr_free(hw->memhdr);
78		hw->emu = NULL;
79		hw->memhdr = NULL;
80		return -ENOMEM;
81	}
82
83	if (hw->mem_size > 0)
84		snd_emu8000_pcm_new(dev->card, hw, 1);
85
86	dev->driver_data = hw;
87
88	return 0;
89}
90
91
92/*
93 * free all resources
94 */
95static int snd_emu8000_delete_device(struct snd_seq_device *dev)
96{
97	struct snd_emu8000 *hw;
98
99	if (dev->driver_data == NULL)
100		return 0; /* no synth was allocated actually */
101
102	hw = dev->driver_data;
103	if (hw->pcm)
104		snd_device_free(dev->card, hw->pcm);
105	if (hw->emu)
106		snd_emux_free(hw->emu);
107	if (hw->memhdr)
108		snd_util_memhdr_free(hw->memhdr);
109	hw->emu = NULL;
110	hw->memhdr = NULL;
111	return 0;
112}
113
114/*
115 *  INIT part
116 */
117
118static int __init alsa_emu8000_init(void)
119{
120
121	static struct snd_seq_dev_ops ops = {
122		snd_emu8000_new_device,
123		snd_emu8000_delete_device,
124	};
125	return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_EMU8000, &ops,
126					      sizeof(struct snd_emu8000*));
127}
128
129static void __exit alsa_emu8000_exit(void)
130{
131	snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_EMU8000);
132}
133
134module_init(alsa_emu8000_init)
135module_exit(alsa_emu8000_exit)
136