diff options
Diffstat (limited to 'kernel/sound/i2c/tea6330t.c')
| -rw-r--r-- | kernel/sound/i2c/tea6330t.c | 386 |
1 files changed, 386 insertions, 0 deletions
diff --git a/kernel/sound/i2c/tea6330t.c b/kernel/sound/i2c/tea6330t.c new file mode 100644 index 000000000..2d22310dc --- /dev/null +++ b/kernel/sound/i2c/tea6330t.c @@ -0,0 +1,386 @@ +/* + * 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) |