sound/usb/6fire/control.c

   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 }