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 <linux/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 /* The ioctl parameter types are compatible between 32- and 132 * 64-bit architectures, so use the same function. */ 133 hw->ops.ioctl_compat = snd_emux_hwdep_ioctl; 134 hw->exclusive = 1; 135 hw->private_data = emu; 136 if ((err = snd_card_register(emu->card)) < 0) 137 return err; 138 139 return 0; 140 } 141 142 143 /* 144 * unregister 145 */ 146 void 147 snd_emux_delete_hwdep(struct snd_emux *emu) 148 { 149 if (emu->hwdep) { 150 snd_device_free(emu->card, emu->hwdep); 151 emu->hwdep = NULL; 152 } 153 } 154