Needed by Philips PSC724 subdriver. The code does not contain any card-specific bits so it can be used by any other ALSA driver.
Signed-off-by: Ondrej Zary linux@rainbow-software.org --- include/sound/wm8766.h | 160 ++++++++++++++++++++ sound/i2c/other/Makefile | 3 +- sound/i2c/other/wm8766.c | 374 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 536 insertions(+), 1 deletions(-) create mode 100644 include/sound/wm8766.h create mode 100644 sound/i2c/other/wm8766.c
diff --git a/include/sound/wm8766.h b/include/sound/wm8766.h new file mode 100644 index 0000000..7d1df7f --- /dev/null +++ b/include/sound/wm8766.h @@ -0,0 +1,160 @@ +#ifndef __SOUND_WM8766_H +#define __SOUND_WM8766_H + +/* + * ALSA driver for WM8766 codecs + * + * Copyright (c) 2012 Ondrej Zary linux@rainbow-software.org + * + * 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 + * + */ + +#define WM8766_REG_DACL1 0x00 +#define WM8766_REG_DACR1 0x01 +#define WM8766_VOL_MASK 0x1ff /* incl. update bit */ +#define WM8766_VOL_UPDATE (1 << 8) /* update volume */ +#define WM8766_REG_DACCTRL1 0x02 +#define WM8766_DAC_MUTEALL (1 << 0) +#define WM8766_DAC_DEEMPALL (1 << 1) +#define WM8766_DAC_PDWN (1 << 2) +#define WM8766_DAC_ATC (1 << 3) +#define WM8766_DAC_IZD (1 << 4) +#define WM8766_DAC_PL_MASK 0x1e0 +#define WM8766_DAC_PL_LL (1 << 5) /* L chan: L signal */ +#define WM8766_DAC_PL_LR (2 << 5) /* L chan: R signal */ +#define WM8766_DAC_PL_LB (3 << 5) /* L chan: both */ +#define WM8766_DAC_PL_RL (1 << 7) /* R chan: L signal */ +#define WM8766_DAC_PL_RR (2 << 7) /* R chan: R signal */ +#define WM8766_DAC_PL_RB (3 << 7) /* R chan: both */ +#define WM8766_REG_IFCTRL 0x03 +#define WM8766_IF_FMT_RIGHTJ (0 << 0) +#define WM8766_IF_FMT_LEFTJ (1 << 0) +#define WM8766_IF_FMT_I2S (2 << 0) +#define WM8766_IF_FMT_DSP (3 << 0) +#define WM8766_IF_DSP_LATE (1 << 2) /* in DSP mode */ +#define WM8766_IF_LRC_INVERTED (1 << 2) /* in other modes */ +#define WM8766_IF_BCLK_INVERTED (1 << 3) +#define WM8766_IF_IWL_16BIT (0 << 4) +#define WM8766_IF_IWL_20BIT (1 << 4) +#define WM8766_IF_IWL_24BIT (2 << 4) +#define WM8766_IF_IWL_32BIT (3 << 4) +#define WM8766_IF_MASK 0x3f +#define WM8766_PHASE_INVERT1 (1 << 6) +#define WM8766_PHASE_INVERT2 (1 << 7) +#define WM8766_PHASE_INVERT3 (1 << 8) +#define WM8766_REG_DACL2 0x04 +#define WM8766_REG_DACR2 0x05 +#define WM8766_REG_DACL3 0x06 +#define WM8766_REG_DACR3 0x07 +#define WM8766_REG_MASTDA 0x08 +#define WM8766_REG_DACCTRL2 0x09 +#define WM8766_DAC2_ZCD (1 << 0) +#define WM8766_DAC2_ZFLAG_ALL (0 << 1) +#define WM8766_DAC2_ZFLAG_1 (1 << 1) +#define WM8766_DAC2_ZFLAG_2 (2 << 1) +#define WM8766_DAC2_ZFLAG_3 (3 << 1) +#define WM8766_DAC2_MUTE1 (1 << 3) +#define WM8766_DAC2_MUTE2 (1 << 4) +#define WM8766_DAC2_MUTE3 (1 << 5) +#define WM8766_DAC2_DEEMP1 (1 << 6) +#define WM8766_DAC2_DEEMP2 (1 << 7) +#define WM8766_DAC2_DEEMP3 (1 << 8) +#define WM8766_REG_DACCTRL3 0x0a +#define WM8766_DAC3_DACPD1 (1 << 1) +#define WM8766_DAC3_DACPD2 (1 << 2) +#define WM8766_DAC3_DACPD3 (1 << 3) +#define WM8766_DAC3_PWRDNALL (1 << 4) +#define WM8766_DAC3_POWER_MASK 0x1e +#define WM8766_DAC3_MASTER (1 << 5) +#define WM8766_DAC3_DAC128FS (0 << 6) +#define WM8766_DAC3_DAC192FS (1 << 6) +#define WM8766_DAC3_DAC256FS (2 << 6) +#define WM8766_DAC3_DAC384FS (3 << 6) +#define WM8766_DAC3_DAC512FS (4 << 6) +#define WM8766_DAC3_DAC768FS (5 << 6) +#define WM8766_DAC3_MSTR_MASK 0x1e0 +#define WM8766_REG_MUTE1 0x0c +#define WM8766_MUTE1_MPD (1 << 6) +#define WM8766_REG_MUTE2 0x0f +#define WM8766_MUTE2_MPD (1 << 5) +#define WM8766_REG_RESET 0x1f + +#define WM8766_REG_COUNT 0x10 /* don't cache the RESET register */ + +struct snd_wm8766; + +struct snd_wm8766_ops { + void (*write)(struct snd_wm8766 *wm, u16 addr, u16 data); +}; + +enum snd_wm8766_ctl_id { + WM8766_CTL_CH1_VOL, + WM8766_CTL_CH2_VOL, + WM8766_CTL_CH3_VOL, + WM8766_CTL_CH1_SW, + WM8766_CTL_CH2_SW, + WM8766_CTL_CH3_SW, + WM8766_CTL_PHASE1_SW, + WM8766_CTL_PHASE2_SW, + WM8766_CTL_PHASE3_SW, + WM8766_CTL_DEEMPH1_SW, + WM8766_CTL_DEEMPH2_SW, + WM8766_CTL_DEEMPH3_SW, + WM8766_CTL_IZD_SW, + WM8766_CTL_ZC_SW, + + WM8766_CTL_COUNT, +}; + +#define WM8766_ENUM_MAX 16 + +#define WM8766_FLAG_STEREO (1 << 0) +#define WM8766_FLAG_VOL_UPDATE (1 << 1) +#define WM8766_FLAG_INVERT (1 << 2) +#define WM8766_FLAG_LIM (1 << 3) +#define WM8766_FLAG_ALC (1 << 4) + +struct snd_wm8766_ctl { + struct snd_kcontrol *kctl; + char *name; + snd_ctl_elem_type_t type; + const char *const enum_names[WM8766_ENUM_MAX]; + const unsigned int *tlv; + u16 reg1, reg2, mask1, mask2, min, max, flags; + void (*set)(struct snd_wm8766 *wm, u16 ch1, u16 ch2); + void (*get)(struct snd_wm8766 *wm, u16 *ch1, u16 *ch2); +}; + +enum snd_wm8766_agc_mode { WM8766_AGC_OFF, WM8766_AGC_LIM, WM8766_AGC_ALC }; + +struct snd_wm8766 { + struct snd_card *card; + struct snd_wm8766_ctl ctl[WM8766_CTL_COUNT]; + enum snd_wm8766_agc_mode agc_mode; + struct snd_wm8766_ops ops; + u16 regs[WM8766_REG_COUNT]; /* 9-bit registers */ +}; + + + +void snd_wm8766_init(struct snd_wm8766 *wm); +void snd_wm8766_set_if(struct snd_wm8766 *wm, u16 dac); +void snd_wm8766_set_master_mode(struct snd_wm8766 *wm, u16 mode); +void snd_wm8766_set_power(struct snd_wm8766 *wm, u16 power); +void snd_wm8766_volume_restore(struct snd_wm8766 *wm); +int snd_wm8766_build_controls(struct snd_wm8766 *wm); + +#endif /* __SOUND_WM8766_H */ diff --git a/sound/i2c/other/Makefile b/sound/i2c/other/Makefile index c95d8f1..93406f7 100644 --- a/sound/i2c/other/Makefile +++ b/sound/i2c/other/Makefile @@ -9,9 +9,10 @@ snd-ak4113-objs := ak4113.o snd-ak4xxx-adda-objs := ak4xxx-adda.o snd-pt2258-objs := pt2258.o snd-tea575x-tuner-objs := tea575x-tuner.o +snd-wm8766-objs := wm8766.o
# Module Dependency obj-$(CONFIG_SND_PDAUDIOCF) += snd-ak4117.o obj-$(CONFIG_SND_ICE1712) += snd-ak4xxx-adda.o -obj-$(CONFIG_SND_ICE1724) += snd-ak4114.o snd-ak4113.o snd-ak4xxx-adda.o snd-pt2258.o +obj-$(CONFIG_SND_ICE1724) += snd-ak4114.o snd-ak4113.o snd-ak4xxx-adda.o snd-pt2258.o snd-wm8766.o obj-$(CONFIG_SND_TEA575X) += snd-tea575x-tuner.o diff --git a/sound/i2c/other/wm8766.c b/sound/i2c/other/wm8766.c new file mode 100644 index 0000000..deed3a3 --- /dev/null +++ b/sound/i2c/other/wm8766.c @@ -0,0 +1,374 @@ +/* + * ALSA driver for WM8766 codecs + * + * Copyright (c) 2012 Ondrej Zary linux@rainbow-software.org + * + * 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/delay.h> +#include <linux/init.h> +#include <linux/module.h> +#include <sound/control.h> +#include <sound/tlv.h> +#include <sound/wm8766.h> + +MODULE_AUTHOR("Ondrej Zary linux@rainbow-software.org"); +MODULE_DESCRIPTION("Routines for control of WM8766 codecs"); +MODULE_LICENSE("GPL"); + +/* low-level access */ + +void snd_wm8766_write(struct snd_wm8766 *wm, u16 addr, u16 data) +{ + if (addr < WM8766_REG_RESET) + wm->regs[addr] = data; + wm->ops.write(wm, addr, data); +} + +/* mixer controls */ + +static const DECLARE_TLV_DB_SCALE(wm8766_tlv, -12750, 50, 1); + +static struct snd_wm8766_ctl default_ctl[WM8766_CTL_COUNT] = { + [WM8766_CTL_CH1_VOL] = { + .name = "Channel 1 Playback Volume", + .type = SNDRV_CTL_ELEM_TYPE_INTEGER, + .tlv = wm8766_tlv, + .reg1 = WM8766_REG_DACL1, + .reg2 = WM8766_REG_DACR1, + .mask1 = WM8766_VOL_MASK, + .mask2 = WM8766_VOL_MASK, + .max = 0xff, + .flags = WM8766_FLAG_STEREO | WM8766_FLAG_VOL_UPDATE, + }, + [WM8766_CTL_CH2_VOL] = { + .name = "Channel 2 Playback Volume", + .type = SNDRV_CTL_ELEM_TYPE_INTEGER, + .tlv = wm8766_tlv, + .reg1 = WM8766_REG_DACL2, + .reg2 = WM8766_REG_DACR2, + .mask1 = WM8766_VOL_MASK, + .mask2 = WM8766_VOL_MASK, + .max = 0xff, + .flags = WM8766_FLAG_STEREO | WM8766_FLAG_VOL_UPDATE, + }, + [WM8766_CTL_CH3_VOL] = { + .name = "Channel 3 Playback Volume", + .type = SNDRV_CTL_ELEM_TYPE_INTEGER, + .tlv = wm8766_tlv, + .reg1 = WM8766_REG_DACL3, + .reg2 = WM8766_REG_DACR3, + .mask1 = WM8766_VOL_MASK, + .mask2 = WM8766_VOL_MASK, + .max = 0xff, + .flags = WM8766_FLAG_STEREO | WM8766_FLAG_VOL_UPDATE, + }, + [WM8766_CTL_CH1_SW] = { + .name = "Channel 1 Playback Switch", + .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN, + .reg1 = WM8766_REG_DACCTRL2, + .mask1 = WM8766_DAC2_MUTE1, + .flags = WM8766_FLAG_INVERT, + }, + [WM8766_CTL_CH2_SW] = { + .name = "Channel 2 Playback Switch", + .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN, + .reg1 = WM8766_REG_DACCTRL2, + .mask1 = WM8766_DAC2_MUTE2, + .flags = WM8766_FLAG_INVERT, + }, + [WM8766_CTL_CH3_SW] = { + .name = "Channel 3 Playback Switch", + .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN, + .reg1 = WM8766_REG_DACCTRL2, + .mask1 = WM8766_DAC2_MUTE3, + .flags = WM8766_FLAG_INVERT, + }, + [WM8766_CTL_PHASE1_SW] = { + .name = "Channel 1 Phase Invert Playback Switch", + .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN, + .reg1 = WM8766_REG_IFCTRL, + .mask1 = WM8766_PHASE_INVERT1, + }, + [WM8766_CTL_PHASE2_SW] = { + .name = "Channel 2 Phase Invert Playback Switch", + .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN, + .reg1 = WM8766_REG_IFCTRL, + .mask1 = WM8766_PHASE_INVERT2, + }, + [WM8766_CTL_PHASE3_SW] = { + .name = "Channel 3 Phase Invert Playback Switch", + .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN, + .reg1 = WM8766_REG_IFCTRL, + .mask1 = WM8766_PHASE_INVERT3, + }, + [WM8766_CTL_DEEMPH1_SW] = { + .name = "Channel 1 Deemphasis Playback Switch", + .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN, + .reg1 = WM8766_REG_DACCTRL2, + .mask1 = WM8766_DAC2_DEEMP1, + }, + [WM8766_CTL_DEEMPH2_SW] = { + .name = "Channel 2 Deemphasis Playback Switch", + .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN, + .reg1 = WM8766_REG_DACCTRL2, + .mask1 = WM8766_DAC2_DEEMP2, + }, + [WM8766_CTL_DEEMPH3_SW] = { + .name = "Channel 3 Deemphasis Playback Switch", + .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN, + .reg1 = WM8766_REG_DACCTRL2, + .mask1 = WM8766_DAC2_DEEMP3, + }, + [WM8766_CTL_IZD_SW] = { + .name = "Infinite Zero Detect Playback Switch", + .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN, + .reg1 = WM8766_REG_DACCTRL1, + .mask1 = WM8766_DAC_IZD, + }, + [WM8766_CTL_ZC_SW] = { + .name = "Zero Cross Detect Playback Switch", + .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN, + .reg1 = WM8766_REG_DACCTRL2, + .mask1 = WM8766_DAC2_ZCD, + .flags = WM8766_FLAG_INVERT, + }, +}; + +/* exported functions */ + +void snd_wm8766_init(struct snd_wm8766 *wm) +{ + int i; + static const u16 default_values[] = { + 0x000, 0x100, + 0x120, 0x000, + 0x000, 0x100, 0x000, 0x100, 0x000, + 0x000, 0x080, + }; + + memcpy(wm->ctl, default_ctl, sizeof(wm->ctl)); + + snd_wm8766_write(wm, WM8766_REG_RESET, 0x00); /* reset */ + udelay(10); + /* load defaults */ + for (i = 0; i < ARRAY_SIZE(default_values); i++) + snd_wm8766_write(wm, i, default_values[i]); +} +EXPORT_SYMBOL(snd_wm8766_init); + +void snd_wm8766_set_if(struct snd_wm8766 *wm, u16 dac) +{ + u16 val = wm->regs[WM8766_REG_IFCTRL] & ~WM8766_IF_MASK; + + dac &= WM8766_IF_MASK; + snd_wm8766_write(wm, WM8766_REG_IFCTRL, val | dac); +} +EXPORT_SYMBOL(snd_wm8766_set_if); + +void snd_wm8766_set_master_mode(struct snd_wm8766 *wm, u16 mode) +{ + u16 val = wm->regs[WM8766_REG_DACCTRL3] & ~WM8766_DAC3_MSTR_MASK; + + mode &= WM8766_DAC3_MSTR_MASK; + snd_wm8766_write(wm, WM8766_REG_DACCTRL3, val | mode); +} +EXPORT_SYMBOL(snd_wm8766_set_master_mode); + +void snd_wm8766_set_power(struct snd_wm8766 *wm, u16 power) +{ + u16 val = wm->regs[WM8766_REG_DACCTRL3] & ~WM8766_DAC3_POWER_MASK; + + power &= WM8766_DAC3_POWER_MASK; + snd_wm8766_write(wm, WM8766_REG_DACCTRL3, val | power); +} +EXPORT_SYMBOL(snd_wm8766_set_power); + +void snd_wm8766_volume_restore(struct snd_wm8766 *wm) +{ + u16 val = wm->regs[WM8766_REG_DACR1]; + /* restore volume after MCLK stopped */ + snd_wm8766_write(wm, WM8766_REG_DACR1, val | WM8766_VOL_UPDATE); +} +EXPORT_SYMBOL(snd_wm8766_volume_restore); + +/* mixer callbacks */ + +static int snd_wm8766_volume_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + struct snd_wm8766 *wm = snd_kcontrol_chip(kcontrol); + int n = kcontrol->private_value; + + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = (wm->ctl[n].flags & WM8766_FLAG_STEREO) ? 2 : 1; + uinfo->value.integer.min = wm->ctl[n].min; + uinfo->value.integer.max = wm->ctl[n].max; + + return 0; +} + +static int snd_wm8766_enum_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + struct snd_wm8766 *wm = snd_kcontrol_chip(kcontrol); + int n = kcontrol->private_value; + + return snd_ctl_enum_info(uinfo, 1, wm->ctl[n].max, + wm->ctl[n].enum_names); +} + +static int snd_wm8766_ctl_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_wm8766 *wm = snd_kcontrol_chip(kcontrol); + int n = kcontrol->private_value; + u16 val1, val2; + + if (wm->ctl[n].get) + wm->ctl[n].get(wm, &val1, &val2); + else { + val1 = wm->regs[wm->ctl[n].reg1] & wm->ctl[n].mask1; + val1 >>= __ffs(wm->ctl[n].mask1); + if (wm->ctl[n].flags & WM8766_FLAG_STEREO) { + val2 = wm->regs[wm->ctl[n].reg2] & wm->ctl[n].mask2; + val2 >>= __ffs(wm->ctl[n].mask2); + if (wm->ctl[n].flags & WM8766_FLAG_VOL_UPDATE) + val2 &= ~WM8766_VOL_UPDATE; + } + } + if (wm->ctl[n].flags & WM8766_FLAG_INVERT) { + val1 = wm->ctl[n].max - (val1 - wm->ctl[n].min); + val2 = wm->ctl[n].max - (val2 - wm->ctl[n].min); + } + ucontrol->value.integer.value[0] = val1; + if (wm->ctl[n].flags & WM8766_FLAG_STEREO) + ucontrol->value.integer.value[1] = val2; + + return 0; +} + +static int snd_wm8766_ctl_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_wm8766 *wm = snd_kcontrol_chip(kcontrol); + int n = kcontrol->private_value; + u16 val, regval1, regval2; + + /* this also works for enum because value is an union */ + regval1 = ucontrol->value.integer.value[0]; + regval2 = ucontrol->value.integer.value[1]; + if (wm->ctl[n].flags & WM8766_FLAG_INVERT) { + regval1 = wm->ctl[n].max - (regval1 - wm->ctl[n].min); + regval2 = wm->ctl[n].max - (regval2 - wm->ctl[n].min); + } + if (wm->ctl[n].set) + wm->ctl[n].set(wm, regval1, regval2); + else { + val = wm->regs[wm->ctl[n].reg1] & ~wm->ctl[n].mask1; + val |= regval1 << __ffs(wm->ctl[n].mask1); + /* both stereo controls in one register */ + if (wm->ctl[n].flags & WM8766_FLAG_STEREO && + wm->ctl[n].reg1 == wm->ctl[n].reg2) { + val &= ~wm->ctl[n].mask2; + val |= regval2 << __ffs(wm->ctl[n].mask2); + } + snd_wm8766_write(wm, wm->ctl[n].reg1, val); + /* stereo controls in different registers */ + if (wm->ctl[n].flags & WM8766_FLAG_STEREO && + wm->ctl[n].reg1 != wm->ctl[n].reg2) { + val = wm->regs[wm->ctl[n].reg2] & ~wm->ctl[n].mask2; + val |= regval2 << __ffs(wm->ctl[n].mask2); + if (wm->ctl[n].flags & WM8766_FLAG_VOL_UPDATE) + val |= WM8766_VOL_UPDATE; + snd_wm8766_write(wm, wm->ctl[n].reg2, val); + } + } + + return 0; +} + +int snd_wm8766_add_control(struct snd_wm8766 *wm, int num) +{ + struct snd_kcontrol_new cont; + struct snd_kcontrol *ctl; + + memset(&cont, 0, sizeof(cont)); + cont.iface = SNDRV_CTL_ELEM_IFACE_MIXER; + cont.private_value = num; + cont.name = wm->ctl[num].name; + cont.access = SNDRV_CTL_ELEM_ACCESS_READWRITE; + if (wm->ctl[num].flags & WM8766_FLAG_LIM || + wm->ctl[num].flags & WM8766_FLAG_ALC) + cont.access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE; + cont.tlv.p = NULL; + cont.get = snd_wm8766_ctl_get; + cont.put = snd_wm8766_ctl_put; + + switch (wm->ctl[num].type) { + case SNDRV_CTL_ELEM_TYPE_INTEGER: + cont.info = snd_wm8766_volume_info; + cont.access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ; + cont.tlv.p = wm->ctl[num].tlv; + break; + case SNDRV_CTL_ELEM_TYPE_BOOLEAN: + wm->ctl[num].max = 1; + if (wm->ctl[num].flags & WM8766_FLAG_STEREO) + cont.info = snd_ctl_boolean_stereo_info; + else + cont.info = snd_ctl_boolean_mono_info; + break; + case SNDRV_CTL_ELEM_TYPE_ENUMERATED: + cont.info = snd_wm8766_enum_info; + break; + default: + return -EINVAL; + } + ctl = snd_ctl_new1(&cont, wm); + if (!ctl) + return -ENOMEM; + wm->ctl[num].kctl = ctl; + + return snd_ctl_add(wm->card, ctl); +} + +int snd_wm8766_build_controls(struct snd_wm8766 *wm) +{ + int err, i; + + for (i = 0; i < WM8766_CTL_COUNT; i++) + if (wm->ctl[i].name) { + err = snd_wm8766_add_control(wm, i); + if (err < 0) + return err; + } + + return 0; +} +EXPORT_SYMBOL(snd_wm8766_build_controls); + +static int __init alsa_wm8766_module_init(void) +{ + return 0; +} + +static void __exit alsa_wm8766_module_exit(void) +{ +} + +module_init(alsa_wm8766_module_init) +module_exit(alsa_wm8766_module_exit)