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/driver.h>
23 #include <sound/core.h>
24 #include <sound/hwdep.h>
25 #include <asm/uaccess.h>
26 #include "emux_voice.h"
27
28 /*
29 * open the hwdep device
30 */
31 static int
32 snd_emux_hwdep_open(snd_hwdep_t *hw, struct file *file)
33 {
34 return 0;
35 }
36
37
38 /*
39 * close the device
40 */
41 static int
42 snd_emux_hwdep_release(snd_hwdep_t *hw, struct file *file)
43 {
44 return 0;
45 }
46
47
48 #define TMP_CLIENT_ID 0x1001
49
50 /*
51 * load patch
52 */
53 static int
54 snd_emux_hwdep_load_patch(snd_emux_t *emu, void __user *arg)
55 {
56 int err;
57 soundfont_patch_info_t patch;
58
59 if (copy_from_user(&patch, arg, sizeof(patch)))
60 return -EFAULT;
61
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 }
75
76 /*
77 * set misc mode
78 */
79 static int
80 snd_emux_hwdep_misc_mode(snd_emux_t *emu, void __user *arg)
81 {
82 struct sndrv_emux_misc_mode info;
83 int i;
84
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;
89
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 }
99
100
101 /*
102 * ioctl
103 */
104 static int
105 snd_emux_hwdep_ioctl(snd_hwdep_t * hw, struct file *file, unsigned int cmd, unsigned long arg)
106 {
107 snd_emux_t *emu = hw->private_data;
108
109 switch (cmd) {
110 case SNDRV_EMUX_IOCTL_VERSION:
111 return put_user(SNDRV_EMUX_VERSION, (unsigned int __user *)arg);
112 case SNDRV_EMUX_IOCTL_LOAD_PATCH:
113 return snd_emux_hwdep_load_patch(emu, (void __user *)arg);
114 case SNDRV_EMUX_IOCTL_RESET_SAMPLES:
115 snd_soundfont_remove_samples(emu->sflist);
116 break;
117 case SNDRV_EMUX_IOCTL_REMOVE_LAST_SAMPLES:
118 snd_soundfont_remove_unlocked(emu->sflist);
119 break;
120 case SNDRV_EMUX_IOCTL_MEM_AVAIL:
121 if (emu->memhdr) {
122 int size = snd_util_mem_avail(emu->memhdr);
123 return put_user(size, (unsigned int __user *)arg);
124 }
125 break;
126 case SNDRV_EMUX_IOCTL_MISC_MODE:
127 return snd_emux_hwdep_misc_mode(emu, (void __user *)arg);
128 }
129
130 return 0;
131 }
132
133
134 /*
135 * register hwdep device
136 */
137
138 int
139 snd_emux_init_hwdep(snd_emux_t *emu)
140 {
141 snd_hwdep_t *hw;
142 int err;
143
144 if ((err = snd_hwdep_new(emu->card, SNDRV_EMUX_HWDEP_NAME, emu->hwdep_idx, &hw)) < 0)
145 return err;
146 emu->hwdep = hw;
147 strcpy(hw->name, SNDRV_EMUX_HWDEP_NAME);
148 hw->iface = SNDRV_HWDEP_IFACE_EMUX_WAVETABLE;
149 hw->ops.open = snd_emux_hwdep_open;
150 hw->ops.release = snd_emux_hwdep_release;
151 hw->ops.ioctl = snd_emux_hwdep_ioctl;
152 hw->exclusive = 1;
153 hw->private_data = emu;
154 if ((err = snd_card_register(emu->card)) < 0)
155 return err;
156
157 return 0;
158 }
159
160
161 /*
162 * unregister
163 */
164 void
165 snd_emux_delete_hwdep(snd_emux_t *emu)
166 {
167 if (emu->hwdep) {
168 snd_device_free(emu->card, emu->hwdep);
169 emu->hwdep = NULL;
170 }
171 }
172
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