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>
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.
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.
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
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>
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");
33 #define chip_t tea6330t_t
35 #define TEA6330T_ADDR (0x80>>1) /* fixed address */
37 #define TEA6330T_SADDR_VOLUME_LEFT 0x00 /* volume left */
38 #define TEA6330T_SADDR_VOLUME_RIGHT 0x01 /* volume right */
39 #define TEA6330T_SADDR_BASS 0x02 /* bass control */
40 #define TEA6330T_SADDR_TREBLE 0x03 /* treble control */
41 #define TEA6330T_SADDR_FADER 0x04 /* fader control */
42 #define TEA6330T_MFN 0x20 /* mute control for selected channels */
43 #define TEA6330T_FCH 0x10 /* select fader channels - front or rear */
44 #define TEA6330T_SADDR_AUDIO_SWITCH 0x05 /* audio switch */
45 #define TEA6330T_GMU 0x80 /* mute control, general mute */
46 #define TEA6330T_EQN 0x40 /* equalizer switchover (0=equalizer-on) */
48 int snd_tea6330t_detect(snd_i2c_bus_t *bus, int equalizer)
53 res = snd_i2c_probeaddr(bus, TEA6330T_ADDR);
59 static void snd_tea6330t_set(tea6330t_t *tea,
60 unsigned char addr, unsigned char value)
63 printk("set - 0x%x/0x%x\n", addr, value);
65 snd_i2c_write(tea->bus, TEA6330T_ADDR, addr, value, 1);
69 #define TEA6330T_MASTER_VOLUME(xname, xindex) \
70 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
71 .info = snd_tea6330t_info_master_volume, \
72 .get = snd_tea6330t_get_master_volume, .put = snd_tea6330t_put_master_volume }
74 static int snd_tea6330t_info_master_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
76 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
78 uinfo->value.integer.min = 0;
79 uinfo->value.integer.max = 43;
83 static int snd_tea6330t_get_master_volume(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
85 tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
87 snd_i2c_lock(tea->bus);
88 ucontrol->value.integer.value[0] = tea->mleft - 0x14;
89 ucontrol->value.integer.value[1] = tea->mright - 0x14;
90 snd_i2c_unlock(tea->bus);
94 static int snd_tea6330t_put_master_volume(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
96 tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
97 int change, count, err;
98 unsigned char bytes[3];
99 unsigned char val1, val2;
101 val1 = (ucontrol->value.integer.value[0] % 44) + 0x14;
102 val2 = (ucontrol->value.integer.value[1] % 44) + 0x14;
103 snd_i2c_lock(tea->bus);
104 change = val1 != tea->mleft || val2 != tea->mright;
108 if (tea->regs[TEA6330T_SADDR_VOLUME_LEFT] != 0) {
109 bytes[count++] = TEA6330T_SADDR_VOLUME_LEFT;
110 bytes[count++] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] = tea->mleft;
112 if (tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] != 0) {
114 bytes[count++] = TEA6330T_SADDR_VOLUME_RIGHT;
115 bytes[count++] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] = tea->mright;
118 if ((err = snd_i2c_sendbytes(tea->device, bytes, count)) < 0)
121 snd_i2c_unlock(tea->bus);
125 #define TEA6330T_MASTER_SWITCH(xname, xindex) \
126 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
127 .info = snd_tea6330t_info_master_switch, \
128 .get = snd_tea6330t_get_master_switch, .put = snd_tea6330t_put_master_switch }
130 static int snd_tea6330t_info_master_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
132 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
134 uinfo->value.integer.min = 0;
135 uinfo->value.integer.max = 1;
139 static int snd_tea6330t_get_master_switch(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
141 tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
143 snd_i2c_lock(tea->bus);
144 ucontrol->value.integer.value[0] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] == 0 ? 0 : 1;
145 ucontrol->value.integer.value[1] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] == 0 ? 0 : 1;
146 snd_i2c_unlock(tea->bus);
150 static int snd_tea6330t_put_master_switch(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
152 tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
154 unsigned char bytes[3];
155 unsigned char oval1, oval2, val1, val2;
157 val1 = ucontrol->value.integer.value[0] & 1;
158 val2 = ucontrol->value.integer.value[1] & 1;
159 snd_i2c_lock(tea->bus);
160 oval1 = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] == 0 ? 0 : 1;
161 oval2 = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] == 0 ? 0 : 1;
162 change = val1 != oval1 || val2 != oval2;
163 tea->regs[TEA6330T_SADDR_VOLUME_LEFT] = val1 ? tea->mleft : 0;
164 tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] = val2 ? tea->mright : 0;
165 bytes[0] = TEA6330T_SADDR_VOLUME_LEFT;
166 bytes[1] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT];
167 bytes[2] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT];
168 if ((err = snd_i2c_sendbytes(tea->device, bytes, 3)) < 0)
170 snd_i2c_unlock(tea->bus);
174 #define TEA6330T_BASS(xname, xindex) \
175 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
176 .info = snd_tea6330t_info_bass, \
177 .get = snd_tea6330t_get_bass, .put = snd_tea6330t_put_bass }
179 static int snd_tea6330t_info_bass(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
181 tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
183 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
185 uinfo->value.integer.min = 0;
186 uinfo->value.integer.max = tea->max_bass;
190 static int snd_tea6330t_get_bass(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
192 tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
194 ucontrol->value.integer.value[0] = tea->bass;
198 static int snd_tea6330t_put_bass(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
200 tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
202 unsigned char bytes[2];
205 val1 = ucontrol->value.integer.value[0] % (tea->max_bass + 1);
206 snd_i2c_lock(tea->bus);
208 val1 += tea->equalizer ? 7 : 3;
209 change = tea->regs[TEA6330T_SADDR_BASS] != val1;
210 bytes[0] = TEA6330T_SADDR_BASS;
211 bytes[1] = tea->regs[TEA6330T_SADDR_BASS] = val1;
212 if ((err = snd_i2c_sendbytes(tea->device, bytes, 2)) < 0)
214 snd_i2c_unlock(tea->bus);
218 #define TEA6330T_TREBLE(xname, xindex) \
219 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
220 .info = snd_tea6330t_info_treble, \
221 .get = snd_tea6330t_get_treble, .put = snd_tea6330t_put_treble }
223 static int snd_tea6330t_info_treble(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
225 tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
227 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
229 uinfo->value.integer.min = 0;
230 uinfo->value.integer.max = tea->max_treble;
234 static int snd_tea6330t_get_treble(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
236 tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
238 ucontrol->value.integer.value[0] = tea->treble;
242 static int snd_tea6330t_put_treble(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
244 tea6330t_t *tea = snd_kcontrol_chip(kcontrol);
246 unsigned char bytes[2];
249 val1 = ucontrol->value.integer.value[0] % (tea->max_treble + 1);
250 snd_i2c_lock(tea->bus);
253 change = tea->regs[TEA6330T_SADDR_TREBLE] != val1;
254 bytes[0] = TEA6330T_SADDR_TREBLE;
255 bytes[1] = tea->regs[TEA6330T_SADDR_TREBLE] = val1;
256 if ((err = snd_i2c_sendbytes(tea->device, bytes, 2)) < 0)
258 snd_i2c_unlock(tea->bus);
262 #define TEA6330T_CONTROLS (sizeof(snd_tea6330t_controls)/sizeof(snd_kcontrol_new_t))
264 static snd_kcontrol_new_t snd_tea6330t_controls[] = {
265 TEA6330T_MASTER_SWITCH("Master Playback Switch", 0),
266 TEA6330T_MASTER_VOLUME("Master Playback Volume", 0),
267 TEA6330T_BASS("Tone Control - Bass", 0),
268 TEA6330T_TREBLE("Tone Control - Treble", 0)
271 static void snd_tea6330_free(snd_i2c_device_t *device)
273 tea6330t_t *tea = snd_magic_cast(tea6330t_t, device->private_data, return);
274 snd_magic_kfree(tea);
277 int snd_tea6330t_update_mixer(snd_card_t * card,
279 int equalizer, int fader)
281 snd_i2c_device_t *device;
283 snd_kcontrol_new_t *knew;
286 u8 default_treble, default_bass;
287 unsigned char bytes[7];
289 tea = snd_magic_kcalloc(tea6330t_t, 0, GFP_KERNEL);
292 if ((err = snd_i2c_device_create(bus, "TEA6330T", TEA6330T_ADDR, &device)) < 0) {
293 snd_magic_kfree(tea);
296 tea->device = device;
298 tea->equalizer = equalizer;
300 device->private_data = tea;
301 device->private_free = snd_tea6330_free;
305 /* turn fader off and handle equalizer */
306 tea->regs[TEA6330T_SADDR_FADER] = 0x3f;
307 tea->regs[TEA6330T_SADDR_AUDIO_SWITCH] = equalizer ? 0 : TEA6330T_EQN;
308 /* initialize mixer */
309 if (!tea->equalizer) {
312 default_bass = 3 + 4;
314 default_treble = 3 + 4;
319 default_bass = 7 + 4;
324 tea->mleft = tea->mright = 0x14;
325 tea->regs[TEA6330T_SADDR_BASS] = default_bass;
326 tea->regs[TEA6330T_SADDR_TREBLE] = default_treble;
328 /* compose I2C message and put the hardware to initial state */
329 bytes[0] = TEA6330T_SADDR_VOLUME_LEFT;
330 for (idx = 0; idx < 6; idx++)
331 bytes[idx+1] = tea->regs[idx];
332 if ((err = snd_i2c_sendbytes(device, bytes, 7)) < 0)
335 strcat(card->mixername, ",TEA6330T");
336 if ((err = snd_component_add(card, "TEA6330T")) < 0)
339 for (idx = 0; idx < TEA6330T_CONTROLS; idx++) {
340 knew = &snd_tea6330t_controls[idx];
341 if (tea->treble == 0 && !strcmp(knew->name, "Tone Control - Treble"))
343 if ((err = snd_ctl_add(card, snd_ctl_new1(knew, tea))) < 0)
352 snd_i2c_device_free(device);
356 EXPORT_SYMBOL(snd_tea6330t_detect);
357 EXPORT_SYMBOL(snd_tea6330t_update_mixer);
363 static int __init alsa_tea6330t_init(void)
368 static void __exit alsa_tea6330t_exit(void)
372 module_init(alsa_tea6330t_init)
373 module_exit(alsa_tea6330t_exit)