ia64/linux-2.6.18-xen.hg

view sound/synth/emux/emux_hwdep.c @ 782:9ab1c319531f

merge with linux-2.6.18-xen.hg
author Isaku Yamahata <yamahata@valinux.co.jp>
date Wed Jan 28 13:07:23 2009 +0900 (2009-01-28)
parents 831230e53067
children
line source
1 /*
2 * Interface for hwdep device
3 *
4 * Copyright (C) 2004 Takashi Iwai <tiwai@suse.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 */
22 #include <sound/driver.h>
23 #include <sound/core.h>
24 #include <sound/hwdep.h>
25 #include <asm/uaccess.h>
26 #include "emux_voice.h"
28 /*
29 * open the hwdep device
30 */
31 static int
32 snd_emux_hwdep_open(struct snd_hwdep *hw, struct file *file)
33 {
34 return 0;
35 }
38 /*
39 * close the device
40 */
41 static int
42 snd_emux_hwdep_release(struct snd_hwdep *hw, struct file *file)
43 {
44 return 0;
45 }
48 #define TMP_CLIENT_ID 0x1001
50 /*
51 * load patch
52 */
53 static int
54 snd_emux_hwdep_load_patch(struct snd_emux *emu, void __user *arg)
55 {
56 int err;
57 struct soundfont_patch_info patch;
59 if (copy_from_user(&patch, arg, sizeof(patch)))
60 return -EFAULT;
62 if (patch.type >= SNDRV_SFNT_LOAD_INFO &&
63 patch.type <= SNDRV_SFNT_PROBE_DATA) {
64 err = snd_soundfont_load(emu->sflist, arg, patch.len + sizeof(patch), TMP_CLIENT_ID);
65 if (err < 0)
66 return err;
67 } else {
68 if (emu->ops.load_fx)
69 return emu->ops.load_fx(emu, patch.type, patch.optarg, arg, patch.len + sizeof(patch));
70 else
71 return -EINVAL;
72 }
73 return 0;
74 }
76 /*
77 * set misc mode
78 */
79 static int
80 snd_emux_hwdep_misc_mode(struct snd_emux *emu, void __user *arg)
81 {
82 struct snd_emux_misc_mode info;
83 int i;
85 if (copy_from_user(&info, arg, sizeof(info)))
86 return -EFAULT;
87 if (info.mode < 0 || info.mode >= EMUX_MD_END)
88 return -EINVAL;
90 if (info.port < 0) {
91 for (i = 0; i < emu->num_ports; i++)
92 emu->portptrs[i]->ctrls[info.mode] = info.value;
93 } else {
94 if (info.port < emu->num_ports)
95 emu->portptrs[info.port]->ctrls[info.mode] = info.value;
96 }
97 return 0;
98 }
101 /*
102 * ioctl
103 */
104 static int
105 snd_emux_hwdep_ioctl(struct snd_hwdep * hw, struct file *file,
106 unsigned int cmd, unsigned long arg)
107 {
108 struct snd_emux *emu = hw->private_data;
110 switch (cmd) {
111 case SNDRV_EMUX_IOCTL_VERSION:
112 return put_user(SNDRV_EMUX_VERSION, (unsigned int __user *)arg);
113 case SNDRV_EMUX_IOCTL_LOAD_PATCH:
114 return snd_emux_hwdep_load_patch(emu, (void __user *)arg);
115 case SNDRV_EMUX_IOCTL_RESET_SAMPLES:
116 snd_soundfont_remove_samples(emu->sflist);
117 break;
118 case SNDRV_EMUX_IOCTL_REMOVE_LAST_SAMPLES:
119 snd_soundfont_remove_unlocked(emu->sflist);
120 break;
121 case SNDRV_EMUX_IOCTL_MEM_AVAIL:
122 if (emu->memhdr) {
123 int size = snd_util_mem_avail(emu->memhdr);
124 return put_user(size, (unsigned int __user *)arg);
125 }
126 break;
127 case SNDRV_EMUX_IOCTL_MISC_MODE:
128 return snd_emux_hwdep_misc_mode(emu, (void __user *)arg);
129 }
131 return 0;
132 }
135 /*
136 * register hwdep device
137 */
139 int
140 snd_emux_init_hwdep(struct snd_emux *emu)
141 {
142 struct snd_hwdep *hw;
143 int err;
145 if ((err = snd_hwdep_new(emu->card, SNDRV_EMUX_HWDEP_NAME, emu->hwdep_idx, &hw)) < 0)
146 return err;
147 emu->hwdep = hw;
148 strcpy(hw->name, SNDRV_EMUX_HWDEP_NAME);
149 hw->iface = SNDRV_HWDEP_IFACE_EMUX_WAVETABLE;
150 hw->ops.open = snd_emux_hwdep_open;
151 hw->ops.release = snd_emux_hwdep_release;
152 hw->ops.ioctl = snd_emux_hwdep_ioctl;
153 hw->exclusive = 1;
154 hw->private_data = emu;
155 if ((err = snd_card_register(emu->card)) < 0)
156 return err;
158 return 0;
159 }
162 /*
163 * unregister
164 */
165 void
166 snd_emux_delete_hwdep(struct snd_emux *emu)
167 {
168 if (emu->hwdep) {
169 snd_device_free(emu->card, emu->hwdep);
170 emu->hwdep = NULL;
171 }
172 }