diff options
Diffstat (limited to 'sound/i2c')
| -rw-r--r-- | sound/i2c/Makefile | 1 | ||||
| -rw-r--r-- | sound/i2c/other/Makefile | 4 | ||||
| -rw-r--r-- | sound/i2c/other/pt2258.c | 233 |
3 files changed, 236 insertions, 2 deletions
diff --git a/sound/i2c/Makefile b/sound/i2c/Makefile index 816a2e7c88c..45902d48c89 100644 --- a/sound/i2c/Makefile +++ b/sound/i2c/Makefile @@ -16,3 +16,4 @@ obj-$(CONFIG_SND) += other/ # Toplevel Module Dependency obj-$(CONFIG_SND_INTERWAVE_STB) += snd-tea6330t.o snd-i2c.o obj-$(CONFIG_SND_ICE1712) += snd-cs8427.o snd-i2c.o +obj-$(CONFIG_SND_ICE1724) += snd-i2c.o diff --git a/sound/i2c/other/Makefile b/sound/i2c/other/Makefile index 2fe023ef00a..77a8a7c75dd 100644 --- a/sound/i2c/other/Makefile +++ b/sound/i2c/other/Makefile @@ -6,11 +6,11 @@ snd-ak4114-objs := ak4114.o snd-ak4117-objs := ak4117.o snd-ak4xxx-adda-objs := ak4xxx-adda.o +snd-pt2258-objs := pt2258.o snd-tea575x-tuner-objs := tea575x-tuner.o # Module Dependency obj-$(CONFIG_SND_PDAUDIOCF) += snd-ak4117.o obj-$(CONFIG_SND_ICE1712) += snd-ak4xxx-adda.o -obj-$(CONFIG_SND_ICE1724) += snd-ak4xxx-adda.o -obj-$(CONFIG_SND_ICE1724) += snd-ak4114.o +obj-$(CONFIG_SND_ICE1724) += snd-ak4114.o snd-ak4xxx-adda.o snd-pt2258.o obj-$(CONFIG_SND_FM801_TEA575X) += snd-tea575x-tuner.o diff --git a/sound/i2c/other/pt2258.c b/sound/i2c/other/pt2258.c new file mode 100644 index 00000000000..50df1df2f2b --- /dev/null +++ b/sound/i2c/other/pt2258.c @@ -0,0 +1,233 @@ +/* + * ALSA Driver for the PT2258 volume controller. + * + * Copyright (c) 2006 Jochen Voss <voss@seehuhn.de> + * + * 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 <sound/driver.h> +#include <sound/core.h> +#include <sound/control.h> +#include <sound/tlv.h> +#include <sound/i2c.h> +#include <sound/pt2258.h> + +MODULE_AUTHOR("Jochen Voss <voss@seehuhn.de>"); +MODULE_DESCRIPTION("PT2258 volume controller (Princeton Technology Corp.)"); +MODULE_LICENSE("GPL"); + +#define PT2258_CMD_RESET 0xc0 +#define PT2258_CMD_UNMUTE 0xf8 +#define PT2258_CMD_MUTE 0xf9 + +static const unsigned char pt2258_channel_code[12] = { + 0x80, 0x90, /* channel 1: -10dB, -1dB */ + 0x40, 0x50, /* channel 2: -10dB, -1dB */ + 0x00, 0x10, /* channel 3: -10dB, -1dB */ + 0x20, 0x30, /* channel 4: -10dB, -1dB */ + 0x60, 0x70, /* channel 5: -10dB, -1dB */ + 0xa0, 0xb0 /* channel 6: -10dB, -1dB */ +}; + +int snd_pt2258_reset(struct snd_pt2258 *pt) +{ + unsigned char bytes[2]; + int i; + + /* reset chip */ + bytes[0] = PT2258_CMD_RESET; + snd_i2c_lock(pt->i2c_bus); + if (snd_i2c_sendbytes(pt->i2c_dev, bytes, 1) != 1) + goto __error; + snd_i2c_unlock(pt->i2c_bus); + + /* mute all channels */ + pt->mute = 1; + bytes[0] = PT2258_CMD_MUTE; + snd_i2c_lock(pt->i2c_bus); + if (snd_i2c_sendbytes(pt->i2c_dev, bytes, 1) != 1) + goto __error; + snd_i2c_unlock(pt->i2c_bus); + + /* set all channels to 0dB */ + for (i = 0; i < 6; ++i) + pt->volume[i] = 0; + bytes[0] = 0xd0; + bytes[1] = 0xe0; + snd_i2c_lock(pt->i2c_bus); + if (snd_i2c_sendbytes(pt->i2c_dev, bytes, 2) != 2) + goto __error; + snd_i2c_unlock(pt->i2c_bus); + + return 0; + + __error: + snd_i2c_unlock(pt->i2c_bus); + snd_printk(KERN_ERR "PT2258 reset failed\n"); + return -EIO; +} + +static int pt2258_stereo_volume_info(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 = 79; + return 0; +} + +static int pt2258_stereo_volume_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pt2258 *pt = kcontrol->private_data; + int base = kcontrol->private_value; + + /* chip does not support register reads */ + ucontrol->value.integer.value[0] = 79 - pt->volume[base]; + ucontrol->value.integer.value[1] = 79 - pt->volume[base + 1]; + return 0; +} + +static int pt2258_stereo_volume_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pt2258 *pt = kcontrol->private_data; + int base = kcontrol->private_value; + unsigned char bytes[2]; + int val0, val1; + + val0 = 79 - ucontrol->value.integer.value[0]; + val1 = 79 - ucontrol->value.integer.value[1]; + if (val0 == pt->volume[base] && val1 == pt->volume[base + 1]) + return 0; + + pt->volume[base] = val0; + bytes[0] = pt2258_channel_code[2 * base] | (val0 / 10); + bytes[1] = pt2258_channel_code[2 * base + 1] | (val0 % 10); + snd_i2c_lock(pt->i2c_bus); + if (snd_i2c_sendbytes(pt->i2c_dev, bytes, 2) != 2) + goto __error; + snd_i2c_unlock(pt->i2c_bus); + + pt->volume[base + 1] = val1; + bytes[0] = pt2258_channel_code[2 * base + 2] | (val1 / 10); + bytes[1] = pt2258_channel_code[2 * base + 3] | (val1 % 10); + snd_i2c_lock(pt->i2c_bus); + if (snd_i2c_sendbytes(pt->i2c_dev, bytes, 2) != 2) + goto __error; + snd_i2c_unlock(pt->i2c_bus); + + return 1; + + __error: + snd_i2c_unlock(pt->i2c_bus); + snd_printk(KERN_ERR "PT2258 access failed\n"); + return -EIO; +} + +static int pt2258_switch_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +static int pt2258_switch_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pt2258 *pt = kcontrol->private_data; + + ucontrol->value.integer.value[0] = !pt->mute; + return 0; +} + +static int pt2258_switch_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pt2258 *pt = kcontrol->private_data; + unsigned char bytes[2]; + int val; + + val = !ucontrol->value.integer.value[0]; + if (pt->mute == val) + return 0; + + pt->mute = val; + bytes[0] = val ? PT2258_CMD_MUTE : PT2258_CMD_UNMUTE; + snd_i2c_lock(pt->i2c_bus); + if (snd_i2c_sendbytes(pt->i2c_dev, bytes, 1) != 1) + goto __error; + snd_i2c_unlock(pt->i2c_bus); + + return 1; + + __error: + snd_i2c_unlock(pt->i2c_bus); + snd_printk(KERN_ERR "PT2258 access failed 2\n"); + return -EIO; +} + +static DECLARE_TLV_DB_SCALE(pt2258_db_scale, -7900, 100, 0); + +int snd_pt2258_build_controls(struct snd_pt2258 *pt) +{ + struct snd_kcontrol_new knew; + char *names[3] = { + "Mic Loopback Playback Volume", + "Line Loopback Playback Volume", + "CD Loopback Playback Volume" + }; + int i, err; + + for (i = 0; i < 3; ++i) { + memset(&knew, 0, sizeof(knew)); + knew.name = names[i]; + knew.iface = SNDRV_CTL_ELEM_IFACE_MIXER; + knew.count = 1; + knew.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | + SNDRV_CTL_ELEM_ACCESS_TLV_READ; + knew.private_value = 2 * i; + knew.info = pt2258_stereo_volume_info; + knew.get = pt2258_stereo_volume_get; + knew.put = pt2258_stereo_volume_put; + knew.tlv.p = pt2258_db_scale; + + err = snd_ctl_add(pt->card, snd_ctl_new1(&knew, pt)); + if (err < 0) + return err; + } + + memset(&knew, 0, sizeof(knew)); + knew.name = "Loopback Switch"; + knew.iface = SNDRV_CTL_ELEM_IFACE_MIXER; + knew.info = pt2258_switch_info; + knew.get = pt2258_switch_get; + knew.put = pt2258_switch_put; + knew.access = 0; + err = snd_ctl_add(pt->card, snd_ctl_new1(&knew, pt)); + if (err < 0) + return err; + + return 0; +} + +EXPORT_SYMBOL(snd_pt2258_reset); +EXPORT_SYMBOL(snd_pt2258_build_controls); |