sound/i2c/tea6330t.c

   1 /*
   2  *  Routines for control of the TEA6330T circuit via i2c bus
   3  *  Sound fader control circuit for car radios by Philips Semiconductors
   4  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   5  *
   6  *
   7  *   This program is free software; you can redistribute it and/or modify
   8  *   it under the terms of the GNU General Public License as published by
   9  *   the Free Software Foundation; either version 2 of the License, or
  10  *   (at your option) any later version.
  11  *
  12  *   This program is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with this program; if not, write to the Free Software
  19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  20  *
  21  */
  22
  23 #include <sound/driver.h>
  24 #include <linux/init.h>
  25 #include <linux/slab.h>
  26 #include <sound/core.h>
  27 #include <sound/tea6330t.h>
  28
  29 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  30 MODULE_DESCRIPTION("Routines for control of the TEA6330T circuit via i2c bus");
  31 MODULE_LICENSE("GPL");
  32
  33 #define TEA6330T_ADDR                   (0x80>>1) /* fixed address */
  34
  35 #define TEA6330T_SADDR_VOLUME_LEFT      0x00    /* volume left */
  36 #define TEA6330T_SADDR_VOLUME_RIGHT     0x01    /* volume right */
  37 #define TEA6330T_SADDR_BASS             0x02    /* bass control */
  38 #define TEA6330T_SADDR_TREBLE           0x03    /* treble control */
  39 #define TEA6330T_SADDR_FADER            0x04    /* fader control */
  40 #define   TEA6330T_MFN                  0x20    /* mute control for selected channels */
  41 #define   TEA6330T_FCH                  0x10    /* select fader channels - front or rear */
  42 #define TEA6330T_SADDR_AUDIO_SWITCH     0x05    /* audio switch */
  43 #define   TEA6330T_GMU                  0x80    /* mute control, general mute */
  44 #define   TEA6330T_EQN                  0x40    /* equalizer switchover (0=equalizer-on) */
  45
  46 int snd_tea6330t_detect(snd_i2c_bus_t *bus, int equalizer)
  47 {
  48         int res;
  49
  50         snd_i2c_lock(bus);
  51         res = snd_i2c_probeaddr(bus, TEA6330T_ADDR);
  52         snd_i2c_unlock(bus);
  53         return res;
  54 }
  55
  56 #if 0
  57 static void snd_tea6330t_set(tea6330t_t *tea,
  58                              unsigned char addr, unsigned char value)
  59 {
  60 #if 0
  61         printk("set - 0x%x/0x%x\n", addr, value);
  62 #endif
  63         snd_i2c_write(tea->bus, TEA6330T_ADDR, addr, value, 1);
  64 }
  65 #endif
  66
  67 #define TEA6330T_MASTER_VOLUME(xname, xindex) \
  68 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  69   .info = snd_tea6330t_info_master_volume, \
  70   .get = snd_tea6330t_get_master_volume, .put = snd_tea6330t_put_master_volume }
  71
  72 static int snd_tea6330t_info_master_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
  73 {
  74         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
  75         uinfo->count = 2;
  76         uinfo->value.integer.min = 0;
  77         uinfo->value.integer.max = 43;
  78         return 0;
  79 }
  80
  81 static int snd_tea6330t_get_master_volume(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
  82 {
  83         tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
  84
  85         snd_i2c_lock(tea->bus);
  86         ucontrol->value.integer.value[0] = tea->mleft - 0x14;
  87         ucontrol->value.integer.value[1] = tea->mright - 0x14;
  88         snd_i2c_unlock(tea->bus);
  89         return 0;
  90 }
  91
  92 static int snd_tea6330t_put_master_volume(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
  93 {
  94         tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
  95         int change, count, err;
  96         unsigned char bytes[3];
  97         unsigned char val1, val2;
  98
  99         val1 = (ucontrol->value.integer.value[0] % 44) + 0x14;
 100         val2 = (ucontrol->value.integer.value[1] % 44) + 0x14;
 101         snd_i2c_lock(tea->bus);
 102         change = val1 != tea->mleft || val2 != tea->mright;
 103         tea->mleft = val1;
 104         tea->mright = val2;
 105         count = 0;
 106         if (tea->regs[TEA6330T_SADDR_VOLUME_LEFT] != 0) {
 107                 bytes[count++] = TEA6330T_SADDR_VOLUME_LEFT;
 108                 bytes[count++] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] = tea->mleft;
 109         }
 110         if (tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] != 0) {
 111                 if (count == 0)
 112                         bytes[count++] = TEA6330T_SADDR_VOLUME_RIGHT;
 113                 bytes[count++] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] = tea->mright;
 114         }
 115         if (count > 0) {
 116                 if ((err = snd_i2c_sendbytes(tea->device, bytes, count)) < 0)
 117                         change = err;
 118         }
 119         snd_i2c_unlock(tea->bus);
 120         return change;
 121 }
 122
 123 #define TEA6330T_MASTER_SWITCH(xname, xindex) \
 124 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
 125   .info = snd_tea6330t_info_master_switch, \
 126   .get = snd_tea6330t_get_master_switch, .put = snd_tea6330t_put_master_switch }
 127
 128 static int snd_tea6330t_info_master_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 129 {
 130         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 131         uinfo->count = 2;
 132         uinfo->value.integer.min = 0;
 133         uinfo->value.integer.max = 1;
 134         return 0;
 135 }
 136
 137 static int snd_tea6330t_get_master_switch(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 138 {
 139         tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
 140
 141         snd_i2c_lock(tea->bus);
 142         ucontrol->value.integer.value[0] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] == 0 ? 0 : 1;
 143         ucontrol->value.integer.value[1] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] == 0 ? 0 : 1;
 144         snd_i2c_unlock(tea->bus);
 145         return 0;
 146 }
 147
 148 static int snd_tea6330t_put_master_switch(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 149 {
 150         tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
 151         int change, err;
 152         unsigned char bytes[3];
 153         unsigned char oval1, oval2, val1, val2;
 154
 155         val1 = ucontrol->value.integer.value[0] & 1;
 156         val2 = ucontrol->value.integer.value[1] & 1;
 157         snd_i2c_lock(tea->bus);
 158         oval1 = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] == 0 ? 0 : 1;
 159         oval2 = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] == 0 ? 0 : 1;
 160         change = val1 != oval1 || val2 != oval2;
 161         tea->regs[TEA6330T_SADDR_VOLUME_LEFT] = val1 ? tea->mleft : 0;
 162         tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] = val2 ? tea->mright : 0;
 163         bytes[0] = TEA6330T_SADDR_VOLUME_LEFT;
 164         bytes[1] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT];
 165         bytes[2] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT];
 166         if ((err = snd_i2c_sendbytes(tea->device, bytes, 3)) < 0)
 167                 change = err;
 168         snd_i2c_unlock(tea->bus);
 169         return change;
 170 }
 171
 172 #define TEA6330T_BASS(xname, xindex) \
 173 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
 174   .info = snd_tea6330t_info_bass, \
 175   .get = snd_tea6330t_get_bass, .put = snd_tea6330t_put_bass }
 176
 177 static int snd_tea6330t_info_bass(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 178 {
 179         tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
 180
 181         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 182         uinfo->count = 1;
 183         uinfo->value.integer.min = 0;
 184         uinfo->value.integer.max = tea->max_bass;
 185         return 0;
 186 }
 187
 188 static int snd_tea6330t_get_bass(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 189 {
 190         tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
 191
 192         ucontrol->value.integer.value[0] = tea->bass;
 193         return 0;
 194 }
 195
 196 static int snd_tea6330t_put_bass(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 197 {
 198         tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
 199         int change, err;
 200         unsigned char bytes[2];
 201         unsigned char val1;
 202
 203         val1 = ucontrol->value.integer.value[0] % (tea->max_bass + 1);
 204         snd_i2c_lock(tea->bus);
 205         tea->bass = val1;
 206         val1 += tea->equalizer ? 7 : 3;
 207         change = tea->regs[TEA6330T_SADDR_BASS] != val1;
 208         bytes[0] = TEA6330T_SADDR_BASS;
 209         bytes[1] = tea->regs[TEA6330T_SADDR_BASS] = val1;
 210         if ((err = snd_i2c_sendbytes(tea->device, bytes, 2)) < 0)
 211                 change = err;
 212         snd_i2c_unlock(tea->bus);
 213         return change;
 214 }
 215
 216 #define TEA6330T_TREBLE(xname, xindex) \
 217 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
 218   .info = snd_tea6330t_info_treble, \
 219   .get = snd_tea6330t_get_treble, .put = snd_tea6330t_put_treble }
 220
 221 static int snd_tea6330t_info_treble(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 222 {
 223         tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
 224
 225         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 226         uinfo->count = 1;
 227         uinfo->value.integer.min = 0;
 228         uinfo->value.integer.max = tea->max_treble;
 229         return 0;
 230 }
 231
 232 static int snd_tea6330t_get_treble(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 233 {
 234         tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
 235
 236         ucontrol->value.integer.value[0] = tea->treble;
 237         return 0;
 238 }
 239
 240 static int snd_tea6330t_put_treble(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 241 {
 242         tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
 243         int change, err;
 244         unsigned char bytes[2];
 245         unsigned char val1;
 246
 247         val1 = ucontrol->value.integer.value[0] % (tea->max_treble + 1);
 248         snd_i2c_lock(tea->bus);
 249         tea->treble = val1;
 250         val1 += 3;
 251         change = tea->regs[TEA6330T_SADDR_TREBLE] != val1;
 252         bytes[0] = TEA6330T_SADDR_TREBLE;
 253         bytes[1] = tea->regs[TEA6330T_SADDR_TREBLE] = val1;
 254         if ((err = snd_i2c_sendbytes(tea->device, bytes, 2)) < 0)
 255                 change = err;
 256         snd_i2c_unlock(tea->bus);
 257         return change;
 258 }
 259
 260 static snd_kcontrol_new_t snd_tea6330t_controls[] = {
 261 TEA6330T_MASTER_SWITCH("Master Playback Switch", 0),
 262 TEA6330T_MASTER_VOLUME("Master Playback Volume", 0),
 263 TEA6330T_BASS("Tone Control - Bass", 0),
 264 TEA6330T_TREBLE("Tone Control - Treble", 0)
 265 };
 266
 267 static void snd_tea6330_free(snd_i2c_device_t *device)
 268 {
 269         tea6330t_t *tea = device->private_data;
 270         kfree(tea);
 271 }
 272
 273 int snd_tea6330t_update_mixer(snd_card_t * card,
 274                               snd_i2c_bus_t *bus,
 275                               int equalizer, int fader)
 276 {
 277         snd_i2c_device_t *device;
 278         tea6330t_t *tea;
 279         snd_kcontrol_new_t *knew;
 280         unsigned int idx;
 281         int err = -ENOMEM;
 282         u8 default_treble, default_bass;
 283         unsigned char bytes[7];
 284
 285         tea = kcalloc(1, sizeof(*tea), GFP_KERNEL);
 286         if (tea == NULL)
 287                 return -ENOMEM;
 288         if ((err = snd_i2c_device_create(bus, "TEA6330T", TEA6330T_ADDR, &device)) < 0) {
 289                 kfree(tea);
 290                 return err;
 291         }
 292         tea->device = device;
 293         tea->bus = bus;
 294         tea->equalizer = equalizer;
 295         tea->fader = fader;
 296         device->private_data = tea;
 297         device->private_free = snd_tea6330_free;
 298
 299         snd_i2c_lock(bus);
 300
 301         /* turn fader off and handle equalizer */
 302         tea->regs[TEA6330T_SADDR_FADER] = 0x3f;
 303         tea->regs[TEA6330T_SADDR_AUDIO_SWITCH] = equalizer ? 0 : TEA6330T_EQN;
 304         /* initialize mixer */
 305         if (!tea->equalizer) {
 306                 tea->max_bass = 9;
 307                 tea->max_treble = 8;
 308                 default_bass = 3 + 4;
 309                 tea->bass = 4;
 310                 default_treble = 3 + 4;
 311                 tea->treble = 4;
 312         } else {
 313                 tea->max_bass = 5;
 314                 tea->max_treble = 0;
 315                 default_bass = 7 + 4;
 316                 tea->bass = 4;
 317                 default_treble = 3;
 318                 tea->treble = 0;
 319         }
 320         tea->mleft = tea->mright = 0x14;
 321         tea->regs[TEA6330T_SADDR_BASS] = default_bass;
 322         tea->regs[TEA6330T_SADDR_TREBLE] = default_treble;
 323
 324         /* compose I2C message and put the hardware to initial state */
 325         bytes[0] = TEA6330T_SADDR_VOLUME_LEFT;
 326         for (idx = 0; idx < 6; idx++)
 327                 bytes[idx+1] = tea->regs[idx];
 328         if ((err = snd_i2c_sendbytes(device, bytes, 7)) < 0)
 329                 goto __error;
 330
 331         strcat(card->mixername, ",TEA6330T");
 332         if ((err = snd_component_add(card, "TEA6330T")) < 0)
 333                 goto __error;
 334
 335         for (idx = 0; idx < ARRAY_SIZE(snd_tea6330t_controls); idx++) {
 336                 knew = &snd_tea6330t_controls[idx];
 337                 if (tea->treble == 0 && !strcmp(knew->name, "Tone Control - Treble"))
 338                         continue;
 339                 if ((err = snd_ctl_add(card, snd_ctl_new1(knew, tea))) < 0)
 340                         goto __error;
 341         }
 342
 343         snd_i2c_unlock(bus);
 344         return 0;
 345
 346       __error:
 347         snd_i2c_unlock(bus);
 348         snd_i2c_device_free(device);
 349         return err;
 350 }
 351
 352 EXPORT_SYMBOL(snd_tea6330t_detect);
 353 EXPORT_SYMBOL(snd_tea6330t_update_mixer);
 354
 355 /*
 356  *  INIT part
 357  */
 358
 359 static int __init alsa_tea6330t_init(void)
 360 {
 361         return 0;
 362 }
 363
 364 static void __exit alsa_tea6330t_exit(void)
 365 {
 366 }
 367
 368 module_init(alsa_tea6330t_init)
 369 module_exit(alsa_tea6330t_exit)