/* * Routines for control of the TEA6330T circuit via i2c bus * Sound fader control circuit for car radios by Philips Semiconductors * Copyright (c) by Jaroslav Kysela <perex@perex.cz> * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include <linux/init.h> #include <linux/slab.h> #include <linux/module.h> #include <sound/core.h> #include <sound/control.h> #include <sound/tea6330t.h> MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); MODULE_DESCRIPTION("Routines for control of the TEA6330T circuit via i2c bus"); MODULE_LICENSE("GPL"); #define TEA6330T_ADDR (0x80>>1) /* fixed address */ #define TEA6330T_SADDR_VOLUME_LEFT 0x00 /* volume left */ #define TEA6330T_SADDR_VOLUME_RIGHT 0x01 /* volume right */ #define TEA6330T_SADDR_BASS 0x02 /* bass control */ #define TEA6330T_SADDR_TREBLE 0x03 /* treble control */ #define TEA6330T_SADDR_FADER 0x04 /* fader control */ #define TEA6330T_MFN 0x20 /* mute control for selected channels */ #define TEA6330T_FCH 0x10 /* select fader channels - front or rear */ #define TEA6330T_SADDR_AUDIO_SWITCH 0x05 /* audio switch */ #define TEA6330T_GMU 0x80 /* mute control, general mute */ #define TEA6330T_EQN 0x40 /* equalizer switchover (0=equalizer-on) */ struct tea6330t { struct snd_i2c_device *device; struct snd_i2c_bus *bus; int equalizer; int fader; unsigned char regs[8]; unsigned char mleft, mright; unsigned char bass, treble; unsigned char max_bass, max_treble; }; int snd_tea6330t_detect(struct snd_i2c_bus *bus, int equalizer) { int res; snd_i2c_lock(bus); res = snd_i2c_probeaddr(bus, TEA6330T_ADDR); snd_i2c_unlock(bus); return res; } #if 0 static void snd_tea6330t_set(struct tea6330t *tea, unsigned char addr, unsigned char value) { #if 0 printk(KERN_DEBUG "set - 0x%x/0x%x\n", addr, value); #endif snd_i2c_write(tea->bus, TEA6330T_ADDR, addr, value, 1); } #endif #define TEA6330T_MASTER_VOLUME(xname, xindex) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ .info = snd_tea6330t_info_master_volume, \ .get = snd_tea6330t_get_master_volume, .put = snd_tea6330t_put_master_volume } static int snd_tea6330t_info_master_volume(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 2; uinfo->value.integer.min = 0; uinfo->value.integer.max = 43; return 0; } static int snd_tea6330t_get_master_volume(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct tea6330t *tea = snd_kcontrol_chip(kcontrol); snd_i2c_lock(tea->bus); ucontrol->value.integer.value[0] = tea->mleft - 0x14; ucontrol->value.integer.value[1] = tea->mright - 0x14; snd_i2c_unlock(tea->bus); return 0; } static int snd_tea6330t_put_master_volume(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct tea6330t *tea = snd_kcontrol_chip(kcontrol); int change, count, err; unsigned char bytes[3]; unsigned char val1, val2; val1 = (ucontrol->value.integer.value[0] % 44) + 0x14; val2 = (ucontrol->value.integer.value[1] % 44) + 0x14; snd_i2c_lock(tea->bus); change = val1 != tea->mleft || val2 != tea->mright; tea->mleft = val1; tea->mright = val2; count = 0; if (tea->regs[TEA6330T_SADDR_VOLUME_LEFT] != 0) { bytes[count++] = TEA6330T_SADDR_VOLUME_LEFT; bytes[count++] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] = tea->mleft; } if (tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] != 0) { if (count == 0) bytes[count++] = TEA6330T_SADDR_VOLUME_RIGHT; bytes[count++] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] = tea->mright; } if (count > 0) { if ((err = snd_i2c_sendbytes(tea->device, bytes, count)) < 0) change = err; } snd_i2c_unlock(tea->bus); return change; } #define TEA6330T_MASTER_SWITCH(xname, xindex) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ .info = snd_tea6330t_info_master_switch, \ .get = snd_tea6330t_get_master_switch, .put = snd_tea6330t_put_master_switch } #define snd_tea6330t_info_master_switch snd_ctl_boolean_stereo_info static int snd_tea6330t_get_master_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct tea6330t *tea = snd_kcontrol_chip(kcontrol); snd_i2c_lock(tea->bus); ucontrol->value.integer.value[0] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] == 0 ? 0 : 1; ucontrol->value.integer.value[1] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] == 0 ? 0 : 1; snd_i2c_unlock(tea->bus); return 0; } static int snd_tea6330t_put_master_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct tea6330t *tea = snd_kcontrol_chip(kcontrol); int change, err; unsigned char bytes[3]; unsigned char oval1, oval2, val1, val2; val1 = ucontrol->value.integer.value[0] & 1; val2 = ucontrol->value.integer.value[1] & 1; snd_i2c_lock(tea->bus); oval1 = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] == 0 ? 0 : 1; oval2 = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] == 0 ? 0 : 1; change = val1 != oval1 || val2 != oval2; tea->regs[TEA6330T_SADDR_VOLUME_LEFT] = val1 ? tea->mleft : 0; tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] = val2 ? tea->mright : 0; bytes[0] = TEA6330T_SADDR_VOLUME_LEFT; bytes[1] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT]; bytes[2] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT]; if ((err = snd_i2c_sendbytes(tea->device, bytes, 3)) < 0) change = err; snd_i2c_unlock(tea->bus); return change; } #define TEA6330T_BASS(xname, xindex) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ .info = snd_tea6330t_info_bass, \ .get = snd_tea6330t_get_bass, .put = snd_tea6330t_put_bass } static int snd_tea6330t_info_bass(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { struct tea6330t *tea = snd_kcontrol_chip(kcontrol); uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 1; uinfo->value.integer.min = 0; uinfo->value.integer.max = tea->max_bass; return 0; } static int snd_tea6330t_get_bass(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct tea6330t *tea = snd_kcontrol_chip(kcontrol); ucontrol->value.integer.value[0] = tea->bass; return 0; } static int snd_tea6330t_put_bass(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct tea6330t *tea = snd_kcontrol_chip(kcontrol); int change, err; unsigned char bytes[2]; unsigned char val1; val1 = ucontrol->value.integer.value[0] % (tea->max_bass + 1); snd_i2c_lock(tea->bus); tea->bass = val1; val1 += tea->equalizer ? 7 : 3; change = tea->regs[TEA6330T_SADDR_BASS] != val1; bytes[0] = TEA6330T_SADDR_BASS; bytes[1] = tea->regs[TEA6330T_SADDR_BASS] = val1; if ((err = snd_i2c_sendbytes(tea->device, bytes, 2)) < 0) change = err; snd_i2c_unlock(tea->bus); return change; } #define TEA6330T_TREBLE(xname, xindex) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ .info = snd_tea6330t_info_treble, \ .get = snd_tea6330t_get_treble, .put = snd_tea6330t_put_treble } static int snd_tea6330t_info_treble(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { struct tea6330t *tea = snd_kcontrol_chip(kcontrol); uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 1; uinfo->value.integer.min = 0; uinfo->value.integer.max = tea->max_treble; return 0; } static int snd_tea6330t_get_treble(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct tea6330t *tea = snd_kcontrol_chip(kcontrol); ucontrol->value.integer.value[0] = tea->treble; return 0; } static int snd_tea6330t_put_treble(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct tea6330t *tea = snd_kcontrol_chip(kcontrol); int change, err; unsigned char bytes[2]; unsigned char val1; val1 = ucontrol->value.integer.value[0] % (tea->max_treble + 1); snd_i2c_lock(tea->bus); tea->treble = val1; val1 += 3; change = tea->regs[TEA6330T_SADDR_TREBLE] != val1; bytes[0] = TEA6330T_SADDR_TREBLE; bytes[1] = tea->regs[TEA6330T_SADDR_TREBLE] = val1; if ((err = snd_i2c_sendbytes(tea->device, bytes, 2)) < 0) change = err; snd_i2c_unlock(tea->bus); return change; } static struct snd_kcontrol_new snd_tea6330t_controls[] = { TEA6330T_MASTER_SWITCH("Master Playback Switch", 0), TEA6330T_MASTER_VOLUME("Master Playback Volume", 0), TEA6330T_BASS("Tone Control - Bass", 0), TEA6330T_TREBLE("Tone Control - Treble", 0) }; static void snd_tea6330_free(struct snd_i2c_device *device) { kfree(device->private_data); } int snd_tea6330t_update_mixer(struct snd_card *card, struct snd_i2c_bus *bus, int equalizer, int fader) { struct snd_i2c_device *device; struct tea6330t *tea; struct snd_kcontrol_new *knew; unsigned int idx; int err = -ENOMEM; u8 default_treble, default_bass; unsigned char bytes[7]; tea = kzalloc(sizeof(*tea), GFP_KERNEL); if (tea == NULL) return -ENOMEM; if ((err = snd_i2c_device_create(bus, "TEA6330T", TEA6330T_ADDR, &device)) < 0) { kfree(tea); return err; } tea->device = device; tea->bus = bus; tea->equalizer = equalizer; tea->fader = fader; device->private_data = tea; device->private_free = snd_tea6330_free; snd_i2c_lock(bus); /* turn fader off and handle equalizer */ tea->regs[TEA6330T_SADDR_FADER] = 0x3f; tea->regs[TEA6330T_SADDR_AUDIO_SWITCH] = equalizer ? 0 : TEA6330T_EQN; /* initialize mixer */ if (!tea->equalizer) { tea->max_bass = 9; tea->max_treble = 8; default_bass = 3 + 4; tea->bass = 4; default_treble = 3 + 4; tea->treble = 4; } else { tea->max_bass = 5; tea->max_treble = 0; default_bass = 7 + 4; tea->bass = 4; default_treble = 3; tea->treble = 0; } tea->mleft = tea->mright = 0x14; tea->regs[TEA6330T_SADDR_BASS] = default_bass; tea->regs[TEA6330T_SADDR_TREBLE] = default_treble; /* compose I2C message and put the hardware to initial state */ bytes[0] = TEA6330T_SADDR_VOLUME_LEFT; for (idx = 0; idx < 6; idx++) bytes[idx+1] = tea->regs[idx]; if ((err = snd_i2c_sendbytes(device, bytes, 7)) < 0) goto __error; strcat(card->mixername, ",TEA6330T"); if ((err = snd_component_add(card, "TEA6330T")) < 0) goto __error; for (idx = 0; idx < ARRAY_SIZE(snd_tea6330t_controls); idx++) { knew = &snd_tea6330t_controls[idx]; if (tea->treble == 0 && !strcmp(knew->name, "Tone Control - Treble")) continue; if ((err = snd_ctl_add(card, snd_ctl_new1(knew, tea))) < 0) goto __error; } snd_i2c_unlock(bus); return 0; __error: snd_i2c_unlock(bus); snd_i2c_device_free(device); return err; } EXPORT_SYMBOL(snd_tea6330t_detect); EXPORT_SYMBOL(snd_tea6330t_update_mixer); /* * INIT part */ static int __init alsa_tea6330t_init(void) { return 0; } static void __exit alsa_tea6330t_exit(void) { } module_init(alsa_tea6330t_init) module_exit(alsa_tea6330t_exit)