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(KERN_DEBUG "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 kfree(device->private_data); 270 } 271 272 int snd_tea6330t_update_mixer(snd_card_t * card, 273 snd_i2c_bus_t *bus, 274 int equalizer, int fader) 275 { 276 snd_i2c_device_t *device; 277 tea6330t_t *tea; 278 snd_kcontrol_new_t *knew; 279 unsigned int idx; 280 int err = -ENOMEM; 281 u8 default_treble, default_bass; 282 unsigned char bytes[7]; 283 284 tea = kzalloc(sizeof(*tea), GFP_KERNEL); 285 if (tea == NULL) 286 return -ENOMEM; 287 if ((err = snd_i2c_device_create(bus, "TEA6330T", TEA6330T_ADDR, &device)) < 0) { 288 kfree(tea); 289 return err; 290 } 291 tea->device = device; 292 tea->bus = bus; 293 tea->equalizer = equalizer; 294 tea->fader = fader; 295 device->private_data = tea; 296 device->private_free = snd_tea6330_free; 297 298 snd_i2c_lock(bus); 299 300 /* turn fader off and handle equalizer */ 301 tea->regs[TEA6330T_SADDR_FADER] = 0x3f; 302 tea->regs[TEA6330T_SADDR_AUDIO_SWITCH] = equalizer ? 0 : TEA6330T_EQN; 303 /* initialize mixer */ 304 if (!tea->equalizer) { 305 tea->max_bass = 9; 306 tea->max_treble = 8; 307 default_bass = 3 + 4; 308 tea->bass = 4; 309 default_treble = 3 + 4; 310 tea->treble = 4; 311 } else { 312 tea->max_bass = 5; 313 tea->max_treble = 0; 314 default_bass = 7 + 4; 315 tea->bass = 4; 316 default_treble = 3; 317 tea->treble = 0; 318 } 319 tea->mleft = tea->mright = 0x14; 320 tea->regs[TEA6330T_SADDR_BASS] = default_bass; 321 tea->regs[TEA6330T_SADDR_TREBLE] = default_treble; 322 323 /* compose I2C message and put the hardware to initial state */ 324 bytes[0] = TEA6330T_SADDR_VOLUME_LEFT; 325 for (idx = 0; idx < 6; idx++) 326 bytes[idx+1] = tea->regs[idx]; 327 if ((err = snd_i2c_sendbytes(device, bytes, 7)) < 0) 328 goto __error; 329 330 strcat(card->mixername, ",TEA6330T"); 331 if ((err = snd_component_add(card, "TEA6330T")) < 0) 332 goto __error; 333 334 for (idx = 0; idx < ARRAY_SIZE(snd_tea6330t_controls); idx++) { 335 knew = &snd_tea6330t_controls[idx]; 336 if (tea->treble == 0 && !strcmp(knew->name, "Tone Control - Treble")) 337 continue; 338 if ((err = snd_ctl_add(card, snd_ctl_new1(knew, tea))) < 0) 339 goto __error; 340 } 341 342 snd_i2c_unlock(bus); 343 return 0; 344 345 __error: 346 snd_i2c_unlock(bus); 347 snd_i2c_device_free(device); 348 return err; 349 } 350 351 EXPORT_SYMBOL(snd_tea6330t_detect); 352 EXPORT_SYMBOL(snd_tea6330t_update_mixer); 353 354 /* 355 * INIT part 356 */ 357 358 static int __init alsa_tea6330t_init(void) 359 { 360 return 0; 361 } 362 363 static void __exit alsa_tea6330t_exit(void) 364 { 365 } 366 367 module_init(alsa_tea6330t_init) 368 module_exit(alsa_tea6330t_exit) 369