Merge branch 'fix/asoc' into for-linus
[linux-2.6.git] / sound / i2c / tea6330t.c
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)