Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 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 | } |