Root/
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@perex.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 <linux/init.h> |
24 | #include <linux/slab.h> |
25 | #include <sound/core.h> |
26 | #include <sound/control.h> |
27 | #include <sound/tea6330t.h> |
28 | |
29 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.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 | |
47 | struct tea6330t { |
48 | struct snd_i2c_device *device; |
49 | struct snd_i2c_bus *bus; |
50 | int equalizer; |
51 | int fader; |
52 | unsigned char regs[8]; |
53 | unsigned char mleft, mright; |
54 | unsigned char bass, treble; |
55 | unsigned char max_bass, max_treble; |
56 | }; |
57 | |
58 | |
59 | int snd_tea6330t_detect(struct snd_i2c_bus *bus, int equalizer) |
60 | { |
61 | int res; |
62 | |
63 | snd_i2c_lock(bus); |
64 | res = snd_i2c_probeaddr(bus, TEA6330T_ADDR); |
65 | snd_i2c_unlock(bus); |
66 | return res; |
67 | } |
68 | |
69 | #if 0 |
70 | static void snd_tea6330t_set(struct tea6330t *tea, |
71 | unsigned char addr, unsigned char value) |
72 | { |
73 | #if 0 |
74 | printk(KERN_DEBUG "set - 0x%x/0x%x\n", addr, value); |
75 | #endif |
76 | snd_i2c_write(tea->bus, TEA6330T_ADDR, addr, value, 1); |
77 | } |
78 | #endif |
79 | |
80 | #define TEA6330T_MASTER_VOLUME(xname, xindex) \ |
81 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ |
82 | .info = snd_tea6330t_info_master_volume, \ |
83 | .get = snd_tea6330t_get_master_volume, .put = snd_tea6330t_put_master_volume } |
84 | |
85 | static int snd_tea6330t_info_master_volume(struct snd_kcontrol *kcontrol, |
86 | struct snd_ctl_elem_info *uinfo) |
87 | { |
88 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
89 | uinfo->count = 2; |
90 | uinfo->value.integer.min = 0; |
91 | uinfo->value.integer.max = 43; |
92 | return 0; |
93 | } |
94 | |
95 | static int snd_tea6330t_get_master_volume(struct snd_kcontrol *kcontrol, |
96 | struct snd_ctl_elem_value *ucontrol) |
97 | { |
98 | struct tea6330t *tea = snd_kcontrol_chip(kcontrol); |
99 | |
100 | snd_i2c_lock(tea->bus); |
101 | ucontrol->value.integer.value[0] = tea->mleft - 0x14; |
102 | ucontrol->value.integer.value[1] = tea->mright - 0x14; |
103 | snd_i2c_unlock(tea->bus); |
104 | return 0; |
105 | } |
106 | |
107 | static int snd_tea6330t_put_master_volume(struct snd_kcontrol *kcontrol, |
108 | struct snd_ctl_elem_value *ucontrol) |
109 | { |
110 | struct tea6330t *tea = snd_kcontrol_chip(kcontrol); |
111 | int change, count, err; |
112 | unsigned char bytes[3]; |
113 | unsigned char val1, val2; |
114 | |
115 | val1 = (ucontrol->value.integer.value[0] % 44) + 0x14; |
116 | val2 = (ucontrol->value.integer.value[1] % 44) + 0x14; |
117 | snd_i2c_lock(tea->bus); |
118 | change = val1 != tea->mleft || val2 != tea->mright; |
119 | tea->mleft = val1; |
120 | tea->mright = val2; |
121 | count = 0; |
122 | if (tea->regs[TEA6330T_SADDR_VOLUME_LEFT] != 0) { |
123 | bytes[count++] = TEA6330T_SADDR_VOLUME_LEFT; |
124 | bytes[count++] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] = tea->mleft; |
125 | } |
126 | if (tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] != 0) { |
127 | if (count == 0) |
128 | bytes[count++] = TEA6330T_SADDR_VOLUME_RIGHT; |
129 | bytes[count++] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] = tea->mright; |
130 | } |
131 | if (count > 0) { |
132 | if ((err = snd_i2c_sendbytes(tea->device, bytes, count)) < 0) |
133 | change = err; |
134 | } |
135 | snd_i2c_unlock(tea->bus); |
136 | return change; |
137 | } |
138 | |
139 | #define TEA6330T_MASTER_SWITCH(xname, xindex) \ |
140 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ |
141 | .info = snd_tea6330t_info_master_switch, \ |
142 | .get = snd_tea6330t_get_master_switch, .put = snd_tea6330t_put_master_switch } |
143 | |
144 | #define snd_tea6330t_info_master_switch snd_ctl_boolean_stereo_info |
145 | |
146 | static int snd_tea6330t_get_master_switch(struct snd_kcontrol *kcontrol, |
147 | struct snd_ctl_elem_value *ucontrol) |
148 | { |
149 | struct tea6330t *tea = snd_kcontrol_chip(kcontrol); |
150 | |
151 | snd_i2c_lock(tea->bus); |
152 | ucontrol->value.integer.value[0] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] == 0 ? 0 : 1; |
153 | ucontrol->value.integer.value[1] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] == 0 ? 0 : 1; |
154 | snd_i2c_unlock(tea->bus); |
155 | return 0; |
156 | } |
157 | |
158 | static int snd_tea6330t_put_master_switch(struct snd_kcontrol *kcontrol, |
159 | struct snd_ctl_elem_value *ucontrol) |
160 | { |
161 | struct tea6330t *tea = snd_kcontrol_chip(kcontrol); |
162 | int change, err; |
163 | unsigned char bytes[3]; |
164 | unsigned char oval1, oval2, val1, val2; |
165 | |
166 | val1 = ucontrol->value.integer.value[0] & 1; |
167 | val2 = ucontrol->value.integer.value[1] & 1; |
168 | snd_i2c_lock(tea->bus); |
169 | oval1 = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] == 0 ? 0 : 1; |
170 | oval2 = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] == 0 ? 0 : 1; |
171 | change = val1 != oval1 || val2 != oval2; |
172 | tea->regs[TEA6330T_SADDR_VOLUME_LEFT] = val1 ? tea->mleft : 0; |
173 | tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] = val2 ? tea->mright : 0; |
174 | bytes[0] = TEA6330T_SADDR_VOLUME_LEFT; |
175 | bytes[1] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT]; |
176 | bytes[2] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT]; |
177 | if ((err = snd_i2c_sendbytes(tea->device, bytes, 3)) < 0) |
178 | change = err; |
179 | snd_i2c_unlock(tea->bus); |
180 | return change; |
181 | } |
182 | |
183 | #define TEA6330T_BASS(xname, xindex) \ |
184 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ |
185 | .info = snd_tea6330t_info_bass, \ |
186 | .get = snd_tea6330t_get_bass, .put = snd_tea6330t_put_bass } |
187 | |
188 | static int snd_tea6330t_info_bass(struct snd_kcontrol *kcontrol, |
189 | struct snd_ctl_elem_info *uinfo) |
190 | { |
191 | struct tea6330t *tea = snd_kcontrol_chip(kcontrol); |
192 | |
193 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
194 | uinfo->count = 1; |
195 | uinfo->value.integer.min = 0; |
196 | uinfo->value.integer.max = tea->max_bass; |
197 | return 0; |
198 | } |
199 | |
200 | static int snd_tea6330t_get_bass(struct snd_kcontrol *kcontrol, |
201 | struct snd_ctl_elem_value *ucontrol) |
202 | { |
203 | struct tea6330t *tea = snd_kcontrol_chip(kcontrol); |
204 | |
205 | ucontrol->value.integer.value[0] = tea->bass; |
206 | return 0; |
207 | } |
208 | |
209 | static int snd_tea6330t_put_bass(struct snd_kcontrol *kcontrol, |
210 | struct snd_ctl_elem_value *ucontrol) |
211 | { |
212 | struct tea6330t *tea = snd_kcontrol_chip(kcontrol); |
213 | int change, err; |
214 | unsigned char bytes[2]; |
215 | unsigned char val1; |
216 | |
217 | val1 = ucontrol->value.integer.value[0] % (tea->max_bass + 1); |
218 | snd_i2c_lock(tea->bus); |
219 | tea->bass = val1; |
220 | val1 += tea->equalizer ? 7 : 3; |
221 | change = tea->regs[TEA6330T_SADDR_BASS] != val1; |
222 | bytes[0] = TEA6330T_SADDR_BASS; |
223 | bytes[1] = tea->regs[TEA6330T_SADDR_BASS] = val1; |
224 | if ((err = snd_i2c_sendbytes(tea->device, bytes, 2)) < 0) |
225 | change = err; |
226 | snd_i2c_unlock(tea->bus); |
227 | return change; |
228 | } |
229 | |
230 | #define TEA6330T_TREBLE(xname, xindex) \ |
231 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ |
232 | .info = snd_tea6330t_info_treble, \ |
233 | .get = snd_tea6330t_get_treble, .put = snd_tea6330t_put_treble } |
234 | |
235 | static int snd_tea6330t_info_treble(struct snd_kcontrol *kcontrol, |
236 | struct snd_ctl_elem_info *uinfo) |
237 | { |
238 | struct tea6330t *tea = snd_kcontrol_chip(kcontrol); |
239 | |
240 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
241 | uinfo->count = 1; |
242 | uinfo->value.integer.min = 0; |
243 | uinfo->value.integer.max = tea->max_treble; |
244 | return 0; |
245 | } |
246 | |
247 | static int snd_tea6330t_get_treble(struct snd_kcontrol *kcontrol, |
248 | struct snd_ctl_elem_value *ucontrol) |
249 | { |
250 | struct tea6330t *tea = snd_kcontrol_chip(kcontrol); |
251 | |
252 | ucontrol->value.integer.value[0] = tea->treble; |
253 | return 0; |
254 | } |
255 | |
256 | static int snd_tea6330t_put_treble(struct snd_kcontrol *kcontrol, |
257 | struct snd_ctl_elem_value *ucontrol) |
258 | { |
259 | struct tea6330t *tea = snd_kcontrol_chip(kcontrol); |
260 | int change, err; |
261 | unsigned char bytes[2]; |
262 | unsigned char val1; |
263 | |
264 | val1 = ucontrol->value.integer.value[0] % (tea->max_treble + 1); |
265 | snd_i2c_lock(tea->bus); |
266 | tea->treble = val1; |
267 | val1 += 3; |
268 | change = tea->regs[TEA6330T_SADDR_TREBLE] != val1; |
269 | bytes[0] = TEA6330T_SADDR_TREBLE; |
270 | bytes[1] = tea->regs[TEA6330T_SADDR_TREBLE] = val1; |
271 | if ((err = snd_i2c_sendbytes(tea->device, bytes, 2)) < 0) |
272 | change = err; |
273 | snd_i2c_unlock(tea->bus); |
274 | return change; |
275 | } |
276 | |
277 | static struct snd_kcontrol_new snd_tea6330t_controls[] = { |
278 | TEA6330T_MASTER_SWITCH("Master Playback Switch", 0), |
279 | TEA6330T_MASTER_VOLUME("Master Playback Volume", 0), |
280 | TEA6330T_BASS("Tone Control - Bass", 0), |
281 | TEA6330T_TREBLE("Tone Control - Treble", 0) |
282 | }; |
283 | |
284 | static void snd_tea6330_free(struct snd_i2c_device *device) |
285 | { |
286 | kfree(device->private_data); |
287 | } |
288 | |
289 | int snd_tea6330t_update_mixer(struct snd_card *card, |
290 | struct snd_i2c_bus *bus, |
291 | int equalizer, int fader) |
292 | { |
293 | struct snd_i2c_device *device; |
294 | struct tea6330t *tea; |
295 | struct snd_kcontrol_new *knew; |
296 | unsigned int idx; |
297 | int err = -ENOMEM; |
298 | u8 default_treble, default_bass; |
299 | unsigned char bytes[7]; |
300 | |
301 | tea = kzalloc(sizeof(*tea), GFP_KERNEL); |
302 | if (tea == NULL) |
303 | return -ENOMEM; |
304 | if ((err = snd_i2c_device_create(bus, "TEA6330T", TEA6330T_ADDR, &device)) < 0) { |
305 | kfree(tea); |
306 | return err; |
307 | } |
308 | tea->device = device; |
309 | tea->bus = bus; |
310 | tea->equalizer = equalizer; |
311 | tea->fader = fader; |
312 | device->private_data = tea; |
313 | device->private_free = snd_tea6330_free; |
314 | |
315 | snd_i2c_lock(bus); |
316 | |
317 | /* turn fader off and handle equalizer */ |
318 | tea->regs[TEA6330T_SADDR_FADER] = 0x3f; |
319 | tea->regs[TEA6330T_SADDR_AUDIO_SWITCH] = equalizer ? 0 : TEA6330T_EQN; |
320 | /* initialize mixer */ |
321 | if (!tea->equalizer) { |
322 | tea->max_bass = 9; |
323 | tea->max_treble = 8; |
324 | default_bass = 3 + 4; |
325 | tea->bass = 4; |
326 | default_treble = 3 + 4; |
327 | tea->treble = 4; |
328 | } else { |
329 | tea->max_bass = 5; |
330 | tea->max_treble = 0; |
331 | default_bass = 7 + 4; |
332 | tea->bass = 4; |
333 | default_treble = 3; |
334 | tea->treble = 0; |
335 | } |
336 | tea->mleft = tea->mright = 0x14; |
337 | tea->regs[TEA6330T_SADDR_BASS] = default_bass; |
338 | tea->regs[TEA6330T_SADDR_TREBLE] = default_treble; |
339 | |
340 | /* compose I2C message and put the hardware to initial state */ |
341 | bytes[0] = TEA6330T_SADDR_VOLUME_LEFT; |
342 | for (idx = 0; idx < 6; idx++) |
343 | bytes[idx+1] = tea->regs[idx]; |
344 | if ((err = snd_i2c_sendbytes(device, bytes, 7)) < 0) |
345 | goto __error; |
346 | |
347 | strcat(card->mixername, ",TEA6330T"); |
348 | if ((err = snd_component_add(card, "TEA6330T")) < 0) |
349 | goto __error; |
350 | |
351 | for (idx = 0; idx < ARRAY_SIZE(snd_tea6330t_controls); idx++) { |
352 | knew = &snd_tea6330t_controls[idx]; |
353 | if (tea->treble == 0 && !strcmp(knew->name, "Tone Control - Treble")) |
354 | continue; |
355 | if ((err = snd_ctl_add(card, snd_ctl_new1(knew, tea))) < 0) |
356 | goto __error; |
357 | } |
358 | |
359 | snd_i2c_unlock(bus); |
360 | return 0; |
361 | |
362 | __error: |
363 | snd_i2c_unlock(bus); |
364 | snd_i2c_device_free(device); |
365 | return err; |
366 | } |
367 | |
368 | EXPORT_SYMBOL(snd_tea6330t_detect); |
369 | EXPORT_SYMBOL(snd_tea6330t_update_mixer); |
370 | |
371 | /* |
372 | * INIT part |
373 | */ |
374 | |
375 | static int __init alsa_tea6330t_init(void) |
376 | { |
377 | return 0; |
378 | } |
379 | |
380 | static void __exit alsa_tea6330t_exit(void) |
381 | { |
382 | } |
383 | |
384 | module_init(alsa_tea6330t_init) |
385 | module_exit(alsa_tea6330t_exit) |
386 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9