2 * Interface for hwdep device
4 * Copyright (C) 2004 Takashi Iwai <tiwai@suse.de>
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.
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.
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
22 #include <sound/core.h>
23 #include <sound/hwdep.h>
24 #include <linux/uaccess.h>
25 #include <linux/nospec.h>
26 #include "emux_voice.h"
28 #define TMP_CLIENT_ID 0x1001
34 snd_emux_hwdep_load_patch(struct snd_emux
*emu
, void __user
*arg
)
37 struct soundfont_patch_info patch
;
39 if (copy_from_user(&patch
, arg
, sizeof(patch
)))
42 if (patch
.key
== GUS_PATCH
)
43 return snd_soundfont_load_guspatch(emu
->sflist
, arg
,
44 patch
.len
+ sizeof(patch
),
47 if (patch
.type
>= SNDRV_SFNT_LOAD_INFO
&&
48 patch
.type
<= SNDRV_SFNT_PROBE_DATA
) {
49 err
= snd_soundfont_load(emu
->sflist
, arg
, patch
.len
+ sizeof(patch
), TMP_CLIENT_ID
);
54 return emu
->ops
.load_fx(emu
, patch
.type
, patch
.optarg
, arg
, patch
.len
+ sizeof(patch
));
65 snd_emux_hwdep_misc_mode(struct snd_emux
*emu
, void __user
*arg
)
67 struct snd_emux_misc_mode info
;
70 if (copy_from_user(&info
, arg
, sizeof(info
)))
72 if (info
.mode
< 0 || info
.mode
>= EMUX_MD_END
)
74 info
.mode
= array_index_nospec(info
.mode
, EMUX_MD_END
);
77 for (i
= 0; i
< emu
->num_ports
; i
++)
78 emu
->portptrs
[i
]->ctrls
[info
.mode
] = info
.value
;
80 if (info
.port
< emu
->num_ports
) {
81 info
.port
= array_index_nospec(info
.port
, emu
->num_ports
);
82 emu
->portptrs
[info
.port
]->ctrls
[info
.mode
] = info
.value
;
93 snd_emux_hwdep_ioctl(struct snd_hwdep
* hw
, struct file
*file
,
94 unsigned int cmd
, unsigned long arg
)
96 struct snd_emux
*emu
= hw
->private_data
;
99 case SNDRV_EMUX_IOCTL_VERSION
:
100 return put_user(SNDRV_EMUX_VERSION
, (unsigned int __user
*)arg
);
101 case SNDRV_EMUX_IOCTL_LOAD_PATCH
:
102 return snd_emux_hwdep_load_patch(emu
, (void __user
*)arg
);
103 case SNDRV_EMUX_IOCTL_RESET_SAMPLES
:
104 snd_soundfont_remove_samples(emu
->sflist
);
106 case SNDRV_EMUX_IOCTL_REMOVE_LAST_SAMPLES
:
107 snd_soundfont_remove_unlocked(emu
->sflist
);
109 case SNDRV_EMUX_IOCTL_MEM_AVAIL
:
111 int size
= snd_util_mem_avail(emu
->memhdr
);
112 return put_user(size
, (unsigned int __user
*)arg
);
115 case SNDRV_EMUX_IOCTL_MISC_MODE
:
116 return snd_emux_hwdep_misc_mode(emu
, (void __user
*)arg
);
124 * register hwdep device
128 snd_emux_init_hwdep(struct snd_emux
*emu
)
130 struct snd_hwdep
*hw
;
133 if ((err
= snd_hwdep_new(emu
->card
, SNDRV_EMUX_HWDEP_NAME
, emu
->hwdep_idx
, &hw
)) < 0)
136 strcpy(hw
->name
, SNDRV_EMUX_HWDEP_NAME
);
137 hw
->iface
= SNDRV_HWDEP_IFACE_EMUX_WAVETABLE
;
138 hw
->ops
.ioctl
= snd_emux_hwdep_ioctl
;
139 /* The ioctl parameter types are compatible between 32- and
140 * 64-bit architectures, so use the same function. */
141 hw
->ops
.ioctl_compat
= snd_emux_hwdep_ioctl
;
143 hw
->private_data
= emu
;
144 if ((err
= snd_card_register(emu
->card
)) < 0)
155 snd_emux_delete_hwdep(struct snd_emux
*emu
)
158 snd_device_free(emu
->card
, emu
->hwdep
);