1 /* 2 * Linux driver for TerraTec DMX 6Fire USB 3 * 4 * Mixer control 5 * 6 * Author: Torsten Schenk <torsten.schenk@zoho.com> 7 * Created: Jan 01, 2011 8 * Version: 0.3.0 9 * Copyright: (C) Torsten Schenk 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 */ 16 17 #include <linux/interrupt.h> 18 #include <sound/control.h> 19 20 #include "control.h" 21 #include "comm.h" 22 #include "chip.h" 23 24 static char *opt_coax_texts[2] = { "Optical", "Coax" }; 25 static char *line_phono_texts[2] = { "Line", "Phono" }; 26 27 /* 28 * calculated with $value\[i\] = 128 \cdot sqrt[3]{\frac{i}{128}}$ 29 * this is done because the linear values cause rapid degredation 30 * of volume in the uppermost region. 31 */ 32 static const u8 log_volume_table[128] = { 33 0x00, 0x19, 0x20, 0x24, 0x28, 0x2b, 0x2e, 0x30, 0x32, 0x34, 34 0x36, 0x38, 0x3a, 0x3b, 0x3d, 0x3e, 0x40, 0x41, 0x42, 0x43, 35 0x44, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 36 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x53, 0x54, 0x55, 0x56, 37 0x56, 0x57, 0x58, 0x58, 0x59, 0x5a, 0x5b, 0x5b, 0x5c, 0x5c, 38 0x5d, 0x5e, 0x5e, 0x5f, 0x60, 0x60, 0x61, 0x61, 0x62, 0x62, 39 0x63, 0x63, 0x64, 0x65, 0x65, 0x66, 0x66, 0x67, 0x67, 0x68, 40 0x68, 0x69, 0x69, 0x6a, 0x6a, 0x6b, 0x6b, 0x6c, 0x6c, 0x6c, 41 0x6d, 0x6d, 0x6e, 0x6e, 0x6f, 0x6f, 0x70, 0x70, 0x70, 0x71, 42 0x71, 0x72, 0x72, 0x73, 0x73, 0x73, 0x74, 0x74, 0x75, 0x75, 43 0x75, 0x76, 0x76, 0x77, 0x77, 0x77, 0x78, 0x78, 0x78, 0x79, 44 0x79, 0x7a, 0x7a, 0x7a, 0x7b, 0x7b, 0x7b, 0x7c, 0x7c, 0x7c, 45 0x7d, 0x7d, 0x7d, 0x7e, 0x7e, 0x7e, 0x7f, 0x7f }; 46 47 /* 48 * data that needs to be sent to device. sets up card internal stuff. 49 * values dumped from windows driver and filtered by trial'n'error. 50 */ 51 static const struct { 52 u8 type; 53 u8 reg; 54 u8 value; 55 } 56 init_data[] = { 57 { 0x22, 0x00, 0x00 }, { 0x20, 0x00, 0x08 }, { 0x22, 0x01, 0x01 }, 58 { 0x20, 0x01, 0x08 }, { 0x22, 0x02, 0x00 }, { 0x20, 0x02, 0x08 }, 59 { 0x22, 0x03, 0x00 }, { 0x20, 0x03, 0x08 }, { 0x22, 0x04, 0x00 }, 60 { 0x20, 0x04, 0x08 }, { 0x22, 0x05, 0x01 }, { 0x20, 0x05, 0x08 }, 61 { 0x22, 0x04, 0x01 }, { 0x12, 0x04, 0x00 }, { 0x12, 0x05, 0x00 }, 62 { 0x12, 0x0d, 0x78 }, { 0x12, 0x21, 0x82 }, { 0x12, 0x22, 0x80 }, 63 { 0x12, 0x23, 0x00 }, { 0x12, 0x06, 0x02 }, { 0x12, 0x03, 0x00 }, 64 { 0x12, 0x02, 0x00 }, { 0x22, 0x03, 0x01 }, 65 { 0 } /* TERMINATING ENTRY */ 66 }; 67 68 static void usb6fire_control_master_vol_update(struct control_runtime *rt) 69 { 70 struct comm_runtime *comm_rt = rt->chip->comm; 71 if (comm_rt) { 72 /* set volume */ 73 comm_rt->write8(comm_rt, 0x12, 0x0f, 0x7f - 74 log_volume_table[rt->master_vol]); 75 /* unmute */ 76 comm_rt->write8(comm_rt, 0x12, 0x0e, 0x00); 77 } 78 } 79 80 static void usb6fire_control_line_phono_update(struct control_runtime *rt) 81 { 82 struct comm_runtime *comm_rt = rt->chip->comm; 83 if (comm_rt) { 84 comm_rt->write8(comm_rt, 0x22, 0x02, rt->line_phono_switch); 85 comm_rt->write8(comm_rt, 0x21, 0x02, rt->line_phono_switch); 86 } 87 } 88 89 static void usb6fire_control_opt_coax_update(struct control_runtime *rt) 90 { 91 struct comm_runtime *comm_rt = rt->chip->comm; 92 if (comm_rt) { 93 comm_rt->write8(comm_rt, 0x22, 0x00, rt->opt_coax_switch); 94 comm_rt->write8(comm_rt, 0x21, 0x00, rt->opt_coax_switch); 95 } 96 } 97 98 static int usb6fire_control_master_vol_info(struct snd_kcontrol *kcontrol, 99 struct snd_ctl_elem_info *uinfo) 100 { 101 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 102 uinfo->count = 1; 103 uinfo->value.integer.min = 0; 104 uinfo->value.integer.max = 127; 105 return 0; 106 } 107 108 static int usb6fire_control_master_vol_put(struct snd_kcontrol *kcontrol, 109 struct snd_ctl_elem_value *ucontrol) 110 { 111 struct control_runtime *rt = snd_kcontrol_chip(kcontrol); 112 int changed = 0; 113 if (rt->master_vol != ucontrol->value.integer.value[0]) { 114 rt->master_vol = ucontrol->value.integer.value[0]; 115 usb6fire_control_master_vol_update(rt); 116 changed = 1; 117 } 118 return changed; 119 } 120 121 static int usb6fire_control_master_vol_get(struct snd_kcontrol *kcontrol, 122 struct snd_ctl_elem_value *ucontrol) 123 { 124 struct control_runtime *rt = snd_kcontrol_chip(kcontrol); 125 ucontrol->value.integer.value[0] = rt->master_vol; 126 return 0; 127 } 128 129 static int usb6fire_control_line_phono_info(struct snd_kcontrol *kcontrol, 130 struct snd_ctl_elem_info *uinfo) 131 { 132 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 133 uinfo->count = 1; 134 uinfo->value.enumerated.items = 2; 135 if (uinfo->value.enumerated.item > 1) 136 uinfo->value.enumerated.item = 1; 137 strcpy(uinfo->value.enumerated.name, 138 line_phono_texts[uinfo->value.enumerated.item]); 139 return 0; 140 } 141 142 static int usb6fire_control_line_phono_put(struct snd_kcontrol *kcontrol, 143 struct snd_ctl_elem_value *ucontrol) 144 { 145 struct control_runtime *rt = snd_kcontrol_chip(kcontrol); 146 int changed = 0; 147 if (rt->line_phono_switch != ucontrol->value.integer.value[0]) { 148 rt->line_phono_switch = ucontrol->value.integer.value[0]; 149 usb6fire_control_line_phono_update(rt); 150 changed = 1; 151 } 152 return changed; 153 } 154 155 static int usb6fire_control_line_phono_get(struct snd_kcontrol *kcontrol, 156 struct snd_ctl_elem_value *ucontrol) 157 { 158 struct control_runtime *rt = snd_kcontrol_chip(kcontrol); 159 ucontrol->value.integer.value[0] = rt->line_phono_switch; 160 return 0; 161 } 162 163 static int usb6fire_control_opt_coax_info(struct snd_kcontrol *kcontrol, 164 struct snd_ctl_elem_info *uinfo) 165 { 166 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 167 uinfo->count = 1; 168 uinfo->value.enumerated.items = 2; 169 if (uinfo->value.enumerated.item > 1) 170 uinfo->value.enumerated.item = 1; 171 strcpy(uinfo->value.enumerated.name, 172 opt_coax_texts[uinfo->value.enumerated.item]); 173 return 0; 174 } 175 176 static int usb6fire_control_opt_coax_put(struct snd_kcontrol *kcontrol, 177 struct snd_ctl_elem_value *ucontrol) 178 { 179 struct control_runtime *rt = snd_kcontrol_chip(kcontrol); 180 int changed = 0; 181 182 if (rt->opt_coax_switch != ucontrol->value.enumerated.item[0]) { 183 rt->opt_coax_switch = ucontrol->value.enumerated.item[0]; 184 usb6fire_control_opt_coax_update(rt); 185 changed = 1; 186 } 187 return changed; 188 } 189 190 static int usb6fire_control_opt_coax_get(struct snd_kcontrol *kcontrol, 191 struct snd_ctl_elem_value *ucontrol) 192 { 193 struct control_runtime *rt = snd_kcontrol_chip(kcontrol); 194 ucontrol->value.enumerated.item[0] = rt->opt_coax_switch; 195 return 0; 196 } 197 198 static struct __devinitdata snd_kcontrol_new elements[] = { 199 { 200 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 201 .name = "Master Playback Volume", 202 .index = 0, 203 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 204 .info = usb6fire_control_master_vol_info, 205 .get = usb6fire_control_master_vol_get, 206 .put = usb6fire_control_master_vol_put 207 }, 208 { 209 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 210 .name = "Line/Phono Capture Route", 211 .index = 0, 212 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 213 .info = usb6fire_control_line_phono_info, 214 .get = usb6fire_control_line_phono_get, 215 .put = usb6fire_control_line_phono_put 216 }, 217 { 218 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 219 .name = "Opt/Coax Capture Route", 220 .index = 0, 221 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 222 .info = usb6fire_control_opt_coax_info, 223 .get = usb6fire_control_opt_coax_get, 224 .put = usb6fire_control_opt_coax_put 225 }, 226 {} 227 }; 228 229 int __devinit usb6fire_control_init(struct sfire_chip *chip) 230 { 231 int i; 232 int ret; 233 struct control_runtime *rt = kzalloc(sizeof(struct control_runtime), 234 GFP_KERNEL); 235 struct comm_runtime *comm_rt = chip->comm; 236 237 if (!rt) 238 return -ENOMEM; 239 240 rt->chip = chip; 241 242 i = 0; 243 while (init_data[i].type) { 244 comm_rt->write8(comm_rt, init_data[i].type, init_data[i].reg, 245 init_data[i].value); 246 i++; 247 } 248 249 usb6fire_control_opt_coax_update(rt); 250 usb6fire_control_line_phono_update(rt); 251 usb6fire_control_master_vol_update(rt); 252 253 i = 0; 254 while (elements[i].name) { 255 ret = snd_ctl_add(chip->card, snd_ctl_new1(&elements[i], rt)); 256 if (ret < 0) { 257 kfree(rt); 258 snd_printk(KERN_ERR PREFIX "cannot add control.\n"); 259 return ret; 260 } 261 i++; 262 } 263 264 chip->control = rt; 265 return 0; 266 } 267 268 void usb6fire_control_abort(struct sfire_chip *chip) 269 {} 270 271 void usb6fire_control_destroy(struct sfire_chip *chip) 272 { 273 kfree(chip->control); 274 chip->control = NULL; 275 } 276