Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/sound/isa/sb/emu8000_synth.c
10817 views
1
/*

2
 *  Copyright (c) by Jaroslav Kysela <[email protected]>

3
 *     and (c) 1999 Steve Ratcliffe <[email protected]>

4
 *  Copyright (C) 1999-2000 Takashi Iwai <[email protected]>

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


27
MODULE_AUTHOR("Takashi Iwai, Steve Ratcliffe");

28
MODULE_DESCRIPTION("Emu8000 synth plug-in routine");

29
MODULE_LICENSE("GPL");

30


31
/*----------------------------------------------------------------*/

32


33
/*

34
 * create a new hardware dependent device for Emu8000

35
 */

36
static 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
 */

95
static 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


118
static 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


129
static void __exit alsa_emu8000_exit(void)

130
{

131
	snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_EMU8000);

132
}

133


134
module_init(alsa_emu8000_init)

135
module_exit(alsa_emu8000_exit)

136


137