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 */
21
22 #include <sound/core.h>
23 #include <sound/hwdep.h>
24 #include <asm/uaccess.h>
25 #include "emux_voice.h"
26
27
28 #define TMP_CLIENT_ID 0x1001
29
30 /*
31 * load patch
32 */
33 static int
34 snd_emux_hwdep_load_patch(struct snd_emux *emu, void __user *arg)
35 {
36 int err;
37 struct soundfont_patch_info patch;
38
39 if (copy_from_user(&patch, arg, sizeof(patch)))
40 return -EFAULT;
41
42 if (patch.type >= SNDRV_SFNT_LOAD_INFO &&
43 patch.type <= SNDRV_SFNT_PROBE_DATA) {
44 err = snd_soundfont_load(emu->sflist, arg, patch.len + sizeof(patch), TMP_CLIENT_ID);
45 if (err < 0)
46 return err;
47 } else {
48 if (emu->ops.load_fx)
49 return emu->ops.load_fx(emu, patch.type, patch.optarg, arg, patch.len + sizeof(patch));
50 else
51 return -EINVAL;
52 }
53 return 0;
54 }
55
56 /*
57 * set misc mode
58 */
59 static int
60 snd_emux_hwdep_misc_mode(struct snd_emux *emu, void __user *arg)
61 {
62 struct snd_emux_misc_mode info;
63 int i;
64
65 if (copy_from_user(&info, arg, sizeof(info)))
66 return -EFAULT;
67 if (info.mode < 0 || info.mode >= EMUX_MD_END)
68 return -EINVAL;
69
70 if (info.port < 0) {
71 for (i = 0; i < emu->num_ports; i++)
72 emu->portptrs[i]->ctrls[info.mode] = info.value;
73 } else {
74 if (info.port < emu->num_ports)
75 emu->portptrs[info.port]->ctrls[info.mode] = info.value;
76 }
77 return 0;
78 }
79
80
81 /*
82 * ioctl
83 */
84 static int
85 snd_emux_hwdep_ioctl(struct snd_hwdep * hw, struct file *file,
86 unsigned int cmd, unsigned long arg)
87 {
88 struct snd_emux *emu = hw->private_data;
89
90 switch (cmd) {
91 case SNDRV_EMUX_IOCTL_VERSION:
92 return put_user(SNDRV_EMUX_VERSION, (unsigned int __user *)arg);
93 case SNDRV_EMUX_IOCTL_LOAD_PATCH:
94 return snd_emux_hwdep_load_patch(emu, (void __user *)arg);
95 case SNDRV_EMUX_IOCTL_RESET_SAMPLES:
96 snd_soundfont_remove_samples(emu->sflist);
97 break;
98 case SNDRV_EMUX_IOCTL_REMOVE_LAST_SAMPLES:
99 snd_soundfont_remove_unlocked(emu->sflist);
100 break;
101 case SNDRV_EMUX_IOCTL_MEM_AVAIL:
102 if (emu->memhdr) {
103 int size = snd_util_mem_avail(emu->memhdr);
104 return put_user(size, (unsigned int __user *)arg);
105 }
106 break;
107 case SNDRV_EMUX_IOCTL_MISC_MODE:
108 return snd_emux_hwdep_misc_mode(emu, (void __user *)arg);
109 }
110
111 return 0;
112 }
113
114
115 /*
116 * register hwdep device
117 */
118
119 int
120 snd_emux_init_hwdep(struct snd_emux *emu)
121 {
122 struct snd_hwdep *hw;
123 int err;
124
125 if ((err = snd_hwdep_new(emu->card, SNDRV_EMUX_HWDEP_NAME, emu->hwdep_idx, &hw)) < 0)
126 return err;
127 emu->hwdep = hw;
128 strcpy(hw->name, SNDRV_EMUX_HWDEP_NAME);
129 hw->iface = SNDRV_HWDEP_IFACE_EMUX_WAVETABLE;
130 hw->ops.ioctl = snd_emux_hwdep_ioctl;
131 hw->exclusive = 1;
132 hw->private_data = emu;
133 if ((err = snd_card_register(emu->card)) < 0)
134 return err;
135
136 return 0;
137 }
138
139
140 /*
141 * unregister
142 */
143 void
144 snd_emux_delete_hwdep(struct snd_emux *emu)
145 {
146 if (emu->hwdep) {
147 snd_device_free(emu->card, emu->hwdep);
148 emu->hwdep = NULL;
149 }
150 }
151
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