1 // SPDX-License-Identifier: GPL-2.0-or-later 1
2 /*
3 * Routines for control of the TEA6330T circu
4 * Sound fader control circuit for car radios
5 * Copyright (c) by Jaroslav Kysela <perex@pe
6 */
7
8 #include <linux/init.h>
9 #include <linux/slab.h>
10 #include <linux/module.h>
11 #include <sound/core.h>
12 #include <sound/control.h>
13 #include <sound/tea6330t.h>
14
15 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz
16 MODULE_DESCRIPTION("Routines for control of th
17 MODULE_LICENSE("GPL");
18
19 #define TEA6330T_ADDR (0x80>
20
21 #define TEA6330T_SADDR_VOLUME_LEFT 0x00
22 #define TEA6330T_SADDR_VOLUME_RIGHT 0x01
23 #define TEA6330T_SADDR_BASS 0x02
24 #define TEA6330T_SADDR_TREBLE 0x03
25 #define TEA6330T_SADDR_FADER 0x04
26 #define TEA6330T_MFN 0x20
27 #define TEA6330T_FCH 0x10
28 #define TEA6330T_SADDR_AUDIO_SWITCH 0x05
29 #define TEA6330T_GMU 0x80
30 #define TEA6330T_EQN 0x40
31
32
33 struct tea6330t {
34 struct snd_i2c_device *device;
35 struct snd_i2c_bus *bus;
36 int equalizer;
37 int fader;
38 unsigned char regs[8];
39 unsigned char mleft, mright;
40 unsigned char bass, treble;
41 unsigned char max_bass, max_treble;
42 };
43
44
45 int snd_tea6330t_detect(struct snd_i2c_bus *bu
46 {
47 int res;
48
49 snd_i2c_lock(bus);
50 res = snd_i2c_probeaddr(bus, TEA6330T_
51 snd_i2c_unlock(bus);
52 return res;
53 }
54
55 #if 0
56 static void snd_tea6330t_set(struct tea6330t *
57 unsigned char add
58 {
59 snd_i2c_write(tea->bus, TEA6330T_ADDR,
60 }
61 #endif
62
63 #define TEA6330T_MASTER_VOLUME(xname, xindex)
64 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name =
65 .info = snd_tea6330t_info_master_volume, \
66 .get = snd_tea6330t_get_master_volume, .put
67
68 static int snd_tea6330t_info_master_volume(str
69 str
70 {
71 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTE
72 uinfo->count = 2;
73 uinfo->value.integer.min = 0;
74 uinfo->value.integer.max = 43;
75 return 0;
76 }
77
78 static int snd_tea6330t_get_master_volume(stru
79 stru
80 {
81 struct tea6330t *tea = snd_kcontrol_ch
82
83 snd_i2c_lock(tea->bus);
84 ucontrol->value.integer.value[0] = tea
85 ucontrol->value.integer.value[1] = tea
86 snd_i2c_unlock(tea->bus);
87 return 0;
88 }
89
90 static int snd_tea6330t_put_master_volume(stru
91 stru
92 {
93 struct tea6330t *tea = snd_kcontrol_ch
94 int change, count, err;
95 unsigned char bytes[3];
96 unsigned char val1, val2;
97
98 val1 = (ucontrol->value.integer.value[
99 val2 = (ucontrol->value.integer.value[
100 snd_i2c_lock(tea->bus);
101 change = val1 != tea->mleft || val2 !=
102 tea->mleft = val1;
103 tea->mright = val2;
104 count = 0;
105 if (tea->regs[TEA6330T_SADDR_VOLUME_LE
106 bytes[count++] = TEA6330T_SADD
107 bytes[count++] = tea->regs[TEA
108 }
109 if (tea->regs[TEA6330T_SADDR_VOLUME_RI
110 if (count == 0)
111 bytes[count++] = TEA63
112 bytes[count++] = tea->regs[TEA
113 }
114 if (count > 0) {
115 err = snd_i2c_sendbytes(tea->d
116 if (err < 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 =
125 .info = snd_tea6330t_info_master_switch, \
126 .get = snd_tea6330t_get_master_switch, .put
127
128 #define snd_tea6330t_info_master_switch
129
130 static int snd_tea6330t_get_master_switch(stru
131 stru
132 {
133 struct tea6330t *tea = snd_kcontrol_ch
134
135 snd_i2c_lock(tea->bus);
136 ucontrol->value.integer.value[0] = tea
137 ucontrol->value.integer.value[1] = tea
138 snd_i2c_unlock(tea->bus);
139 return 0;
140 }
141
142 static int snd_tea6330t_put_master_switch(stru
143 stru
144 {
145 struct tea6330t *tea = snd_kcontrol_ch
146 int change, err;
147 unsigned char bytes[3];
148 unsigned char oval1, oval2, val1, val2
149
150 val1 = ucontrol->value.integer.value[0
151 val2 = ucontrol->value.integer.value[1
152 snd_i2c_lock(tea->bus);
153 oval1 = tea->regs[TEA6330T_SADDR_VOLUM
154 oval2 = tea->regs[TEA6330T_SADDR_VOLUM
155 change = val1 != oval1 || val2 != oval
156 tea->regs[TEA6330T_SADDR_VOLUME_LEFT]
157 tea->regs[TEA6330T_SADDR_VOLUME_RIGHT]
158 bytes[0] = TEA6330T_SADDR_VOLUME_LEFT;
159 bytes[1] = tea->regs[TEA6330T_SADDR_VO
160 bytes[2] = tea->regs[TEA6330T_SADDR_VO
161 err = snd_i2c_sendbytes(tea->device, b
162 if (err < 0)
163 change = err;
164 snd_i2c_unlock(tea->bus);
165 return change;
166 }
167
168 #define TEA6330T_BASS(xname, xindex) \
169 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name =
170 .info = snd_tea6330t_info_bass, \
171 .get = snd_tea6330t_get_bass, .put = snd_tea
172
173 static int snd_tea6330t_info_bass(struct snd_k
174 struct snd_c
175 {
176 struct tea6330t *tea = snd_kcontrol_ch
177
178 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTE
179 uinfo->count = 1;
180 uinfo->value.integer.min = 0;
181 uinfo->value.integer.max = tea->max_ba
182 return 0;
183 }
184
185 static int snd_tea6330t_get_bass(struct snd_kc
186 struct snd_ct
187 {
188 struct tea6330t *tea = snd_kcontrol_ch
189
190 ucontrol->value.integer.value[0] = tea
191 return 0;
192 }
193
194 static int snd_tea6330t_put_bass(struct snd_kc
195 struct snd_ct
196 {
197 struct tea6330t *tea = snd_kcontrol_ch
198 int change, err;
199 unsigned char bytes[2];
200 unsigned char val1;
201
202 val1 = ucontrol->value.integer.value[0
203 snd_i2c_lock(tea->bus);
204 tea->bass = val1;
205 val1 += tea->equalizer ? 7 : 3;
206 change = tea->regs[TEA6330T_SADDR_BASS
207 bytes[0] = TEA6330T_SADDR_BASS;
208 bytes[1] = tea->regs[TEA6330T_SADDR_BA
209 err = snd_i2c_sendbytes(tea->device, b
210 if (err < 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 =
218 .info = snd_tea6330t_info_treble, \
219 .get = snd_tea6330t_get_treble, .put = snd_t
220
221 static int snd_tea6330t_info_treble(struct snd
222 struct snd
223 {
224 struct tea6330t *tea = snd_kcontrol_ch
225
226 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTE
227 uinfo->count = 1;
228 uinfo->value.integer.min = 0;
229 uinfo->value.integer.max = tea->max_tr
230 return 0;
231 }
232
233 static int snd_tea6330t_get_treble(struct snd_
234 struct snd_
235 {
236 struct tea6330t *tea = snd_kcontrol_ch
237
238 ucontrol->value.integer.value[0] = tea
239 return 0;
240 }
241
242 static int snd_tea6330t_put_treble(struct snd_
243 struct snd_
244 {
245 struct tea6330t *tea = snd_kcontrol_ch
246 int change, err;
247 unsigned char bytes[2];
248 unsigned char val1;
249
250 val1 = ucontrol->value.integer.value[0
251 snd_i2c_lock(tea->bus);
252 tea->treble = val1;
253 val1 += 3;
254 change = tea->regs[TEA6330T_SADDR_TREB
255 bytes[0] = TEA6330T_SADDR_TREBLE;
256 bytes[1] = tea->regs[TEA6330T_SADDR_TR
257 err = snd_i2c_sendbytes(tea->device, b
258 if (err < 0)
259 change = err;
260 snd_i2c_unlock(tea->bus);
261 return change;
262 }
263
264 static const struct snd_kcontrol_new snd_tea63
265 TEA6330T_MASTER_SWITCH("Master Playback Switch
266 TEA6330T_MASTER_VOLUME("Master Playback Volume
267 TEA6330T_BASS("Tone Control - Bass", 0),
268 TEA6330T_TREBLE("Tone Control - Treble", 0)
269 };
270
271 static void snd_tea6330_free(struct snd_i2c_de
272 {
273 kfree(device->private_data);
274 }
275
276 int snd_tea6330t_update_mixer(struct snd_card
277 struct snd_i2c_b
278 int equalizer, i
279 {
280 struct snd_i2c_device *device;
281 struct tea6330t *tea;
282 const struct snd_kcontrol_new *knew;
283 unsigned int idx;
284 int err;
285 u8 default_treble, default_bass;
286 unsigned char bytes[7];
287
288 tea = kzalloc(sizeof(*tea), GFP_KERNEL
289 if (tea == NULL)
290 return -ENOMEM;
291 err = snd_i2c_device_create(bus, "TEA6
292 if (err < 0) {
293 kfree(tea);
294 return err;
295 }
296 tea->device = device;
297 tea->bus = bus;
298 tea->equalizer = equalizer;
299 tea->fader = fader;
300 device->private_data = tea;
301 device->private_free = snd_tea6330_fre
302
303 snd_i2c_lock(bus);
304
305 /* turn fader off and handle equalizer
306 tea->regs[TEA6330T_SADDR_FADER] = 0x3f
307 tea->regs[TEA6330T_SADDR_AUDIO_SWITCH]
308 /* initialize mixer */
309 if (!tea->equalizer) {
310 tea->max_bass = 9;
311 tea->max_treble = 8;
312 default_bass = 3 + 4;
313 tea->bass = 4;
314 default_treble = 3 + 4;
315 tea->treble = 4;
316 } else {
317 tea->max_bass = 5;
318 tea->max_treble = 0;
319 default_bass = 7 + 4;
320 tea->bass = 4;
321 default_treble = 3;
322 tea->treble = 0;
323 }
324 tea->mleft = tea->mright = 0x14;
325 tea->regs[TEA6330T_SADDR_BASS] = defau
326 tea->regs[TEA6330T_SADDR_TREBLE] = def
327
328 /* compose I2C message and put the har
329 bytes[0] = TEA6330T_SADDR_VOLUME_LEFT;
330 for (idx = 0; idx < 6; idx++)
331 bytes[idx+1] = tea->regs[idx];
332 err = snd_i2c_sendbytes(device, bytes,
333 if (err < 0)
334 goto __error;
335
336 strcat(card->mixername, ",TEA6330T");
337 err = snd_component_add(card, "TEA6330
338 if (err < 0)
339 goto __error;
340
341 for (idx = 0; idx < ARRAY_SIZE(snd_tea
342 knew = &snd_tea6330t_controls[
343 if (tea->treble == 0 && !strcm
344 continue;
345 err = snd_ctl_add(card, snd_ct
346 if (err < 0)
347 goto __error;
348 }
349
350 snd_i2c_unlock(bus);
351 return 0;
352
353 __error:
354 snd_i2c_unlock(bus);
355 snd_i2c_device_free(device);
356 return err;
357 }
358
359 EXPORT_SYMBOL(snd_tea6330t_detect);
360 EXPORT_SYMBOL(snd_tea6330t_update_mixer);
361
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.