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/control.h> 28#include <sound/tea6330t.h> 29 30MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>"); 31MODULE_DESCRIPTION("Routines for control of the TEA6330T circuit via i2c bus"); 32MODULE_LICENSE("GPL"); 33 34#define TEA6330T_ADDR (0x80>>1) /* fixed address */ 35 36#define TEA6330T_SADDR_VOLUME_LEFT 0x00 /* volume left */ 37#define TEA6330T_SADDR_VOLUME_RIGHT 0x01 /* volume right */ 38#define TEA6330T_SADDR_BASS 0x02 /* bass control */ 39#define TEA6330T_SADDR_TREBLE 0x03 /* treble control */ 40#define TEA6330T_SADDR_FADER 0x04 /* fader control */ 41#define TEA6330T_MFN 0x20 /* mute control for selected channels */ 42#define TEA6330T_FCH 0x10 /* select fader channels - front or rear */ 43#define TEA6330T_SADDR_AUDIO_SWITCH 0x05 /* audio switch */ 44#define TEA6330T_GMU 0x80 /* mute control, general mute */ 45#define TEA6330T_EQN 0x40 /* equalizer switchover (0=equalizer-on) */ 46 47 48struct tea6330t { 49 struct snd_i2c_device *device; 50 struct snd_i2c_bus *bus; 51 int equalizer; 52 int fader; 53 unsigned char regs[8]; 54 unsigned char mleft, mright; 55 unsigned char bass, treble; 56 unsigned char max_bass, max_treble; 57}; 58 59 60int snd_tea6330t_detect(struct snd_i2c_bus *bus, int equalizer) 61{ 62 int res; 63 64 snd_i2c_lock(bus); 65 res = snd_i2c_probeaddr(bus, TEA6330T_ADDR); 66 snd_i2c_unlock(bus); 67 return res; 68} 69 70 71#define TEA6330T_MASTER_VOLUME(xname, xindex) \ 72{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ 73 .info = snd_tea6330t_info_master_volume, \ 74 .get = snd_tea6330t_get_master_volume, .put = snd_tea6330t_put_master_volume } 75 76static int snd_tea6330t_info_master_volume(struct snd_kcontrol *kcontrol, 77 struct snd_ctl_elem_info *uinfo) 78{ 79 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 80 uinfo->count = 2; 81 uinfo->value.integer.min = 0; 82 uinfo->value.integer.max = 43; 83 return 0; 84} 85 86static int snd_tea6330t_get_master_volume(struct snd_kcontrol *kcontrol, 87 struct snd_ctl_elem_value *ucontrol) 88{ 89 struct tea6330t *tea = snd_kcontrol_chip(kcontrol); 90 91 snd_i2c_lock(tea->bus); 92 ucontrol->value.integer.value[0] = tea->mleft - 0x14; 93 ucontrol->value.integer.value[1] = tea->mright - 0x14; 94 snd_i2c_unlock(tea->bus); 95 return 0; 96} 97 98static int snd_tea6330t_put_master_volume(struct snd_kcontrol *kcontrol, 99 struct snd_ctl_elem_value *ucontrol) 100{ 101 struct tea6330t *tea = snd_kcontrol_chip(kcontrol); 102 int change, count, err; 103 unsigned char bytes[3]; 104 unsigned char val1, val2; 105 106 val1 = (ucontrol->value.integer.value[0] % 44) + 0x14; 107 val2 = (ucontrol->value.integer.value[1] % 44) + 0x14; 108 snd_i2c_lock(tea->bus); 109 change = val1 != tea->mleft || val2 != tea->mright; 110 tea->mleft = val1; 111 tea->mright = val2; 112 count = 0; 113 if (tea->regs[TEA6330T_SADDR_VOLUME_LEFT] != 0) { 114 bytes[count++] = TEA6330T_SADDR_VOLUME_LEFT; 115 bytes[count++] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] = tea->mleft; 116 } 117 if (tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] != 0) { 118 if (count == 0) 119 bytes[count++] = TEA6330T_SADDR_VOLUME_RIGHT; 120 bytes[count++] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] = tea->mright; 121 } 122 if (count > 0) { 123 if ((err = snd_i2c_sendbytes(tea->device, bytes, count)) < 0) 124 change = err; 125 } 126 snd_i2c_unlock(tea->bus); 127 return change; 128} 129 130#define TEA6330T_MASTER_SWITCH(xname, xindex) \ 131{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ 132 .info = snd_tea6330t_info_master_switch, \ 133 .get = snd_tea6330t_get_master_switch, .put = snd_tea6330t_put_master_switch } 134 135static int snd_tea6330t_info_master_switch(struct snd_kcontrol *kcontrol, 136 struct snd_ctl_elem_info *uinfo) 137{ 138 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 139 uinfo->count = 2; 140 uinfo->value.integer.min = 0; 141 uinfo->value.integer.max = 1; 142 return 0; 143} 144 145static int snd_tea6330t_get_master_switch(struct snd_kcontrol *kcontrol, 146 struct snd_ctl_elem_value *ucontrol) 147{ 148 struct tea6330t *tea = snd_kcontrol_chip(kcontrol); 149 150 snd_i2c_lock(tea->bus); 151 ucontrol->value.integer.value[0] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] == 0 ? 0 : 1; 152 ucontrol->value.integer.value[1] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] == 0 ? 0 : 1; 153 snd_i2c_unlock(tea->bus); 154 return 0; 155} 156 157static int snd_tea6330t_put_master_switch(struct snd_kcontrol *kcontrol, 158 struct snd_ctl_elem_value *ucontrol) 159{ 160 struct tea6330t *tea = snd_kcontrol_chip(kcontrol); 161 int change, err; 162 unsigned char bytes[3]; 163 unsigned char oval1, oval2, val1, val2; 164 165 val1 = ucontrol->value.integer.value[0] & 1; 166 val2 = ucontrol->value.integer.value[1] & 1; 167 snd_i2c_lock(tea->bus); 168 oval1 = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] == 0 ? 0 : 1; 169 oval2 = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] == 0 ? 0 : 1; 170 change = val1 != oval1 || val2 != oval2; 171 tea->regs[TEA6330T_SADDR_VOLUME_LEFT] = val1 ? tea->mleft : 0; 172 tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] = val2 ? tea->mright : 0; 173 bytes[0] = TEA6330T_SADDR_VOLUME_LEFT; 174 bytes[1] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT]; 175 bytes[2] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT]; 176 if ((err = snd_i2c_sendbytes(tea->device, bytes, 3)) < 0) 177 change = err; 178 snd_i2c_unlock(tea->bus); 179 return change; 180} 181 182#define TEA6330T_BASS(xname, xindex) \ 183{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ 184 .info = snd_tea6330t_info_bass, \ 185 .get = snd_tea6330t_get_bass, .put = snd_tea6330t_put_bass } 186 187static int snd_tea6330t_info_bass(struct snd_kcontrol *kcontrol, 188 struct snd_ctl_elem_info *uinfo) 189{ 190 struct tea6330t *tea = snd_kcontrol_chip(kcontrol); 191 192 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 193 uinfo->count = 1; 194 uinfo->value.integer.min = 0; 195 uinfo->value.integer.max = tea->max_bass; 196 return 0; 197} 198 199static int snd_tea6330t_get_bass(struct snd_kcontrol *kcontrol, 200 struct snd_ctl_elem_value *ucontrol) 201{ 202 struct tea6330t *tea = snd_kcontrol_chip(kcontrol); 203 204 ucontrol->value.integer.value[0] = tea->bass; 205 return 0; 206} 207 208static int snd_tea6330t_put_bass(struct snd_kcontrol *kcontrol, 209 struct snd_ctl_elem_value *ucontrol) 210{ 211 struct tea6330t *tea = snd_kcontrol_chip(kcontrol); 212 int change, err; 213 unsigned char bytes[2]; 214 unsigned char val1; 215 216 val1 = ucontrol->value.integer.value[0] % (tea->max_bass + 1); 217 snd_i2c_lock(tea->bus); 218 tea->bass = val1; 219 val1 += tea->equalizer ? 7 : 3; 220 change = tea->regs[TEA6330T_SADDR_BASS] != val1; 221 bytes[0] = TEA6330T_SADDR_BASS; 222 bytes[1] = tea->regs[TEA6330T_SADDR_BASS] = val1; 223 if ((err = snd_i2c_sendbytes(tea->device, bytes, 2)) < 0) 224 change = err; 225 snd_i2c_unlock(tea->bus); 226 return change; 227} 228 229#define TEA6330T_TREBLE(xname, xindex) \ 230{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ 231 .info = snd_tea6330t_info_treble, \ 232 .get = snd_tea6330t_get_treble, .put = snd_tea6330t_put_treble } 233 234static int snd_tea6330t_info_treble(struct snd_kcontrol *kcontrol, 235 struct snd_ctl_elem_info *uinfo) 236{ 237 struct tea6330t *tea = snd_kcontrol_chip(kcontrol); 238 239 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 240 uinfo->count = 1; 241 uinfo->value.integer.min = 0; 242 uinfo->value.integer.max = tea->max_treble; 243 return 0; 244} 245 246static int snd_tea6330t_get_treble(struct snd_kcontrol *kcontrol, 247 struct snd_ctl_elem_value *ucontrol) 248{ 249 struct tea6330t *tea = snd_kcontrol_chip(kcontrol); 250 251 ucontrol->value.integer.value[0] = tea->treble; 252 return 0; 253} 254 255static int snd_tea6330t_put_treble(struct snd_kcontrol *kcontrol, 256 struct snd_ctl_elem_value *ucontrol) 257{ 258 struct tea6330t *tea = snd_kcontrol_chip(kcontrol); 259 int change, err; 260 unsigned char bytes[2]; 261 unsigned char val1; 262 263 val1 = ucontrol->value.integer.value[0] % (tea->max_treble + 1); 264 snd_i2c_lock(tea->bus); 265 tea->treble = val1; 266 val1 += 3; 267 change = tea->regs[TEA6330T_SADDR_TREBLE] != val1; 268 bytes[0] = TEA6330T_SADDR_TREBLE; 269 bytes[1] = tea->regs[TEA6330T_SADDR_TREBLE] = val1; 270 if ((err = snd_i2c_sendbytes(tea->device, bytes, 2)) < 0) 271 change = err; 272 snd_i2c_unlock(tea->bus); 273 return change; 274} 275 276static struct snd_kcontrol_new snd_tea6330t_controls[] = { 277TEA6330T_MASTER_SWITCH("Master Playback Switch", 0), 278TEA6330T_MASTER_VOLUME("Master Playback Volume", 0), 279TEA6330T_BASS("Tone Control - Bass", 0), 280TEA6330T_TREBLE("Tone Control - Treble", 0) 281}; 282 283static void snd_tea6330_free(struct snd_i2c_device *device) 284{ 285 kfree(device->private_data); 286} 287 288int snd_tea6330t_update_mixer(struct snd_card *card, 289 struct snd_i2c_bus *bus, 290 int equalizer, int fader) 291{ 292 struct snd_i2c_device *device; 293 struct tea6330t *tea; 294 struct snd_kcontrol_new *knew; 295 unsigned int idx; 296 int err = -ENOMEM; 297 u8 default_treble, default_bass; 298 unsigned char bytes[7]; 299 300 tea = kzalloc(sizeof(*tea), GFP_KERNEL); 301 if (tea == NULL) 302 return -ENOMEM; 303 if ((err = snd_i2c_device_create(bus, "TEA6330T", TEA6330T_ADDR, &device)) < 0) { 304 kfree(tea); 305 return err; 306 } 307 tea->device = device; 308 tea->bus = bus; 309 tea->equalizer = equalizer; 310 tea->fader = fader; 311 device->private_data = tea; 312 device->private_free = snd_tea6330_free; 313 314 snd_i2c_lock(bus); 315 316 /* turn fader off and handle equalizer */ 317 tea->regs[TEA6330T_SADDR_FADER] = 0x3f; 318 tea->regs[TEA6330T_SADDR_AUDIO_SWITCH] = equalizer ? 0 : TEA6330T_EQN; 319 /* initialize mixer */ 320 if (!tea->equalizer) { 321 tea->max_bass = 9; 322 tea->max_treble = 8; 323 default_bass = 3 + 4; 324 tea->bass = 4; 325 default_treble = 3 + 4; 326 tea->treble = 4; 327 } else { 328 tea->max_bass = 5; 329 tea->max_treble = 0; 330 default_bass = 7 + 4; 331 tea->bass = 4; 332 default_treble = 3; 333 tea->treble = 0; 334 } 335 tea->mleft = tea->mright = 0x14; 336 tea->regs[TEA6330T_SADDR_BASS] = default_bass; 337 tea->regs[TEA6330T_SADDR_TREBLE] = default_treble; 338 339 /* compose I2C message and put the hardware to initial state */ 340 bytes[0] = TEA6330T_SADDR_VOLUME_LEFT; 341 for (idx = 0; idx < 6; idx++) 342 bytes[idx+1] = tea->regs[idx]; 343 if ((err = snd_i2c_sendbytes(device, bytes, 7)) < 0) 344 goto __error; 345 346 strcat(card->mixername, ",TEA6330T"); 347 if ((err = snd_component_add(card, "TEA6330T")) < 0) 348 goto __error; 349 350 for (idx = 0; idx < ARRAY_SIZE(snd_tea6330t_controls); idx++) { 351 knew = &snd_tea6330t_controls[idx]; 352 if (tea->treble == 0 && !strcmp(knew->name, "Tone Control - Treble")) 353 continue; 354 if ((err = snd_ctl_add(card, snd_ctl_new1(knew, tea))) < 0) 355 goto __error; 356 } 357 358 snd_i2c_unlock(bus); 359 return 0; 360 361 __error: 362 snd_i2c_unlock(bus); 363 snd_i2c_device_free(device); 364 return err; 365} 366 367EXPORT_SYMBOL(snd_tea6330t_detect); 368EXPORT_SYMBOL(snd_tea6330t_update_mixer); 369 370/* 371 * INIT part 372 */ 373 374static int __init alsa_tea6330t_init(void) 375{ 376 return 0; 377} 378 379static void __exit alsa_tea6330t_exit(void) 380{ 381} 382 383module_init(alsa_tea6330t_init) 384module_exit(alsa_tea6330t_exit) 385