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)
370
|
This page was automatically generated by the
LXR engine.
|