[PATCH 3/4] Add Wolfson Microelectronics WM8776 codec ALSA driver
From: Ondrej Zary
Date: Mon Apr 16 2012 - 17:19:44 EST
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@xxxxxxxxxxxxxxxxxxxx>
---
include/sound/wm8776.h | 223 ++++++++++++++++
sound/i2c/other/Makefile | 3 +-
sound/i2c/other/wm8776.c | 645 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 870 insertions(+), 1 deletions(-)
create mode 100644 include/sound/wm8776.h
create mode 100644 sound/i2c/other/wm8776.c
diff --git a/include/sound/wm8776.h b/include/sound/wm8776.h
new file mode 100644
index 0000000..78a73eb
--- /dev/null
+++ b/include/sound/wm8776.h
@@ -0,0 +1,223 @@
+#ifndef __SOUND_WM8776_H
+#define __SOUND_WM8776_H
+
+/*
+ * ALSA driver for WM8776 codecs
+ *
+ * Copyright (c) 2012 Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>
+ *
+ * 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 WM8776_REG_HPLVOL 0x00
+#define WM8776_REG_HPRVOL 0x01
+#define WM8776_REG_HPMASTER 0x02
+#define WM8776_HPVOL_MASK 0x17f /* incl. update bit */
+#define WM8776_VOL_HPZCEN (1 << 7) /* zero cross detect */
+#define WM8776_VOL_UPDATE (1 << 8) /* update volume */
+#define WM8776_REG_DACLVOL 0x03
+#define WM8776_REG_DACRVOL 0x04
+#define WM8776_REG_DACMASTER 0x05
+#define WM8776_DACVOL_MASK 0x1ff /* incl. update bit */
+#define WM8776_REG_PHASESWAP 0x06
+#define WM8776_PHASE_INVERTL (1 << 0)
+#define WM8776_PHASE_INVERTR (1 << 1)
+#define WM8776_REG_DACCTRL1 0x07
+#define WM8776_DAC_DZCEN (1 << 0)
+#define WM8776_DAC_ATC (1 << 1)
+#define WM8776_DAC_IZD (1 << 2)
+#define WM8776_DAC_TOD (1 << 3)
+#define WM8776_DAC_PL_MASK 0xf0
+#define WM8776_DAC_PL_LL (1 << 4) /* L chan: L signal */
+#define WM8776_DAC_PL_LR (2 << 4) /* L chan: R signal */
+#define WM8776_DAC_PL_LB (3 << 4) /* L chan: both */
+#define WM8776_DAC_PL_RL (1 << 6) /* R chan: L signal */
+#define WM8776_DAC_PL_RR (2 << 6) /* R chan: R signal */
+#define WM8776_DAC_PL_RB (3 << 6) /* R chan: both */
+#define WM8776_REG_DACMUTE 0x08
+#define WM8776_DACMUTE (1 << 0)
+#define WM8776_REG_DACCTRL2 0x09
+#define WM8776_DAC2_DEEMPH (1 << 0)
+#define WM8776_DAC2_ZFLAG_DISABLE (0 << 1)
+#define WM8776_DAC2_ZFLAG_OWN (1 << 1)
+#define WM8776_DAC2_ZFLAG_BOTH (2 << 1)
+#define WM8776_DAC2_ZFLAG_EITHER (3 << 1)
+#define WM8776_REG_DACIFCTRL 0x0a
+#define WM8776_FMT_RIGHTJ (0 << 0)
+#define WM8776_FMT_LEFTJ (1 << 0)
+#define WM8776_FMT_I2S (2 << 0)
+#define WM8776_FMT_DSP (3 << 0)
+#define WM8776_FMT_DSP_LATE (1 << 2) /* in DSP mode */
+#define WM8776_FMT_LRC_INVERTED (1 << 2) /* in other modes */
+#define WM8776_FMT_BCLK_INVERTED (1 << 3)
+#define WM8776_FMT_16BIT (0 << 4)
+#define WM8776_FMT_20BIT (1 << 4)
+#define WM8776_FMT_24BIT (2 << 4)
+#define WM8776_FMT_32BIT (3 << 4)
+#define WM8776_REG_ADCIFCTRL 0x0b
+#define WM8776_FMT_ADCMCLK_INVERTED (1 << 6)
+#define WM8776_FMT_ADCHPD (1 << 8)
+#define WM8776_REG_MSTRCTRL 0x0c
+#define WM8776_IF_ADC256FS (2 << 0)
+#define WM8776_IF_ADC384FS (3 << 0)
+#define WM8776_IF_ADC512FS (4 << 0)
+#define WM8776_IF_ADC768FS (5 << 0)
+#define WM8776_IF_OVERSAMP64 (1 << 3)
+#define WM8776_IF_DAC128FS (0 << 4)
+#define WM8776_IF_DAC192FS (1 << 4)
+#define WM8776_IF_DAC256FS (2 << 4)
+#define WM8776_IF_DAC384FS (3 << 4)
+#define WM8776_IF_DAC512FS (4 << 4)
+#define WM8776_IF_DAC768FS (5 << 4)
+#define WM8776_IF_DAC_MASTER (1 << 7)
+#define WM8776_IF_ADC_MASTER (1 << 8)
+#define WM8776_REG_PWRDOWN 0x0d
+#define WM8776_PWR_PDWN (1 << 0)
+#define WM8776_PWR_ADCPD (1 << 1)
+#define WM8776_PWR_DACPD (1 << 2)
+#define WM8776_PWR_HPPD (1 << 3)
+#define WM8776_PWR_AINPD (1 << 6)
+#define WM8776_REG_ADCLVOL 0x0e
+#define WM8776_REG_ADCRVOL 0x0f
+#define WM8776_ADC_GAIN_MASK 0xff
+#define WM8776_ADC_ZCEN (1 << 8)
+#define WM8776_REG_ALCCTRL1 0x10
+#define WM8776_ALC1_LCT_MASK 0x0f /* 0=-16dB, 1=-15dB..15=-1dB */
+#define WM8776_ALC1_MAXGAIN_MASK 0x70 /* 0,1=0dB, 2=+4dB...7=+24dB */
+#define WM8776_ALC1_LCSEL_MASK 0x180
+#define WM8776_ALC1_LCSEL_LIMITER (0 << 7)
+#define WM8776_ALC1_LCSEL_ALCR (1 << 7)
+#define WM8776_ALC1_LCSEL_ALCL (2 << 7)
+#define WM8776_ALC1_LCSEL_ALCSTEREO (3 << 7)
+#define WM8776_REG_ALCCTRL2 0x11
+#define WM8776_ALC2_HOLD_MASK 0x0f /*0=0ms, 1=2.67ms, 2=5.33ms.. */
+#define WM8776_ALC2_ZCEN (1 << 7)
+#define WM8776_ALC2_LCEN (1 << 8)
+#define WM8776_REG_ALCCTRL3 0x12
+#define WM8776_ALC3_ATK_MASK 0x0f
+#define WM8776_ALC3_DCY_MASK 0xf0
+#define WM8776_ALC3_FDECAY (1 << 8)
+#define WM8776_REG_NOISEGATE 0x13
+#define WM8776_NGAT_ENABLE (1 << 0)
+#define WM8776_NGAT_THR_MASK 0x1c /*0=-78dB, 1=-72dB...7=-36dB */
+#define WM8776_REG_LIMITER 0x14
+#define WM8776_LIM_MAXATTEN_MASK 0x0f
+#define WM8776_LIM_TRANWIN_MASK 0x70 /*0=0us, 1=62.5us, 2=125us.. */
+#define WM8776_REG_ADCMUX 0x15
+#define WM8776_ADC_MUX_AIN1 (1 << 0)
+#define WM8776_ADC_MUX_AIN2 (1 << 1)
+#define WM8776_ADC_MUX_AIN3 (1 << 2)
+#define WM8776_ADC_MUX_AIN4 (1 << 3)
+#define WM8776_ADC_MUX_AIN5 (1 << 4)
+#define WM8776_ADC_MUTER (1 << 6)
+#define WM8776_ADC_MUTEL (1 << 7)
+#define WM8776_ADC_LRBOTH (1 << 8)
+#define WM8776_REG_OUTMUX 0x16
+#define WM8776_OUTMUX_DAC (1 << 0)
+#define WM8776_OUTMUX_AUX (1 << 1)
+#define WM8776_OUTMUX_BYPASS (1 << 2)
+#define WM8776_REG_RESET 0x17
+
+#define WM8776_REG_COUNT 0x17 /* don't cache the RESET register */
+
+struct snd_wm8776;
+
+struct snd_wm8776_ops {
+ void (*write)(struct snd_wm8776 *wm, u8 addr, u8 data);
+};
+
+enum snd_wm8776_ctl_id {
+ WM8776_CTL_DAC_VOL,
+ WM8776_CTL_DAC_SW,
+ WM8776_CTL_DAC_ZC_SW,
+ WM8776_CTL_HP_VOL,
+ WM8776_CTL_HP_SW,
+ WM8776_CTL_HP_ZC_SW,
+ WM8776_CTL_AUX_SW,
+ WM8776_CTL_BYPASS_SW,
+ WM8776_CTL_DAC_IZD_SW,
+ WM8776_CTL_PHASE_SW,
+ WM8776_CTL_DEEMPH_SW,
+ WM8776_CTL_ADC_VOL,
+ WM8776_CTL_ADC_SW,
+ WM8776_CTL_INPUT1_SW,
+ WM8776_CTL_INPUT2_SW,
+ WM8776_CTL_INPUT3_SW,
+ WM8776_CTL_INPUT4_SW,
+ WM8776_CTL_INPUT5_SW,
+ WM8776_CTL_AGC_SEL,
+ WM8776_CTL_LIM_THR,
+ WM8776_CTL_LIM_ATK,
+ WM8776_CTL_LIM_DCY,
+ WM8776_CTL_LIM_TRANWIN,
+ WM8776_CTL_LIM_MAXATTN,
+ WM8776_CTL_ALC_TGT,
+ WM8776_CTL_ALC_ATK,
+ WM8776_CTL_ALC_DCY,
+ WM8776_CTL_ALC_MAXGAIN,
+ WM8776_CTL_ALC_MAXATTN,
+ WM8776_CTL_ALC_HLD,
+ WM8776_CTL_NGT_SW,
+ WM8776_CTL_NGT_THR,
+
+ WM8776_CTL_COUNT,
+};
+
+#define WM8776_ENUM_MAX 16
+
+#define WM8776_FLAG_STEREO (1 << 0)
+#define WM8776_FLAG_VOL_UPDATE (1 << 1)
+#define WM8776_FLAG_INVERT (1 << 2)
+#define WM8776_FLAG_LIM (1 << 3)
+#define WM8776_FLAG_ALC (1 << 4)
+
+struct snd_wm8776_ctl {
+ char *name;
+ snd_ctl_elem_type_t type;
+ const char *const enum_names[WM8776_ENUM_MAX];
+ const unsigned int *tlv;
+ u16 reg1, reg2, mask1, mask2, min, max, flags;
+ void (*set)(struct snd_wm8776 *wm, u16 ch1, u16 ch2);
+ void (*get)(struct snd_wm8776 *wm, u16 *ch1, u16 *ch2);
+};
+
+enum snd_wm8776_agc_mode {
+ WM8776_AGC_OFF,
+ WM8776_AGC_LIM,
+ WM8776_AGC_ALC_R,
+ WM8776_AGC_ALC_L,
+ WM8776_AGC_ALC_STEREO
+};
+
+struct snd_wm8776 {
+ struct snd_card *card;
+ struct snd_wm8776_ctl ctl[WM8776_CTL_COUNT];
+ enum snd_wm8776_agc_mode agc_mode;
+ struct snd_wm8776_ops ops;
+ u16 regs[WM8776_REG_COUNT]; /* 9-bit registers */
+};
+
+
+
+void snd_wm8776_init(struct snd_wm8776 *wm);
+void snd_wm8776_set_dac_if(struct snd_wm8776 *wm, u16 dac);
+void snd_wm8776_set_adc_if(struct snd_wm8776 *wm, u16 adc);
+void snd_wm8776_set_master_mode(struct snd_wm8776 *wm, u16 mode);
+void snd_wm8776_set_power(struct snd_wm8776 *wm, u16 power);
+void snd_wm8776_volume_restore(struct snd_wm8776 *wm);
+int snd_wm8776_build_controls(struct snd_wm8776 *wm);
+
+#endif /* __SOUND_WM8776_H */
diff --git a/sound/i2c/other/Makefile b/sound/i2c/other/Makefile
index 93406f7..433a76d 100644
--- a/sound/i2c/other/Makefile
+++ b/sound/i2c/other/Makefile
@@ -10,9 +10,10 @@ snd-ak4xxx-adda-objs := ak4xxx-adda.o
snd-pt2258-objs := pt2258.o
snd-tea575x-tuner-objs := tea575x-tuner.o
snd-wm8766-objs := wm8766.o
+snd-wm8776-objs := wm8776.o
# Module Dependency
obj-$(CONFIG_SND_PDAUDIOCF) += snd-ak4117.o
obj-$(CONFIG_SND_ICE1712) += snd-ak4xxx-adda.o
-obj-$(CONFIG_SND_ICE1724) += snd-ak4114.o snd-ak4113.o snd-ak4xxx-adda.o snd-pt2258.o snd-wm8766.o
+obj-$(CONFIG_SND_ICE1724) += snd-ak4114.o snd-ak4113.o snd-ak4xxx-adda.o snd-pt2258.o snd-wm8766.o snd-wm8776.o
obj-$(CONFIG_SND_TEA575X) += snd-tea575x-tuner.o
diff --git a/sound/i2c/other/wm8776.c b/sound/i2c/other/wm8776.c
new file mode 100644
index 0000000..253cbcf
--- /dev/null
+++ b/sound/i2c/other/wm8776.c
@@ -0,0 +1,645 @@
+/*
+ * ALSA driver for WM8776 codecs
+ *
+ * Copyright (c) 2012 Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>
+ *
+ * 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/wm8776.h>
+
+MODULE_AUTHOR("Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("Routines for control of WM8776 codecs");
+MODULE_LICENSE("GPL");
+
+/* low-level access */
+
+void snd_wm8776_write(struct snd_wm8776 *wm, u16 addr, u16 data)
+{
+ u8 bus_addr = addr << 1 | data >> 8; /* addr + 9th data bit */
+ u8 bus_data = data & 0xff; /* remaining 8 data bits */
+
+ if (addr < WM8776_REG_RESET)
+ wm->regs[addr] = data;
+ wm->ops.write(wm, bus_addr, bus_data);
+}
+
+/* register-level functions */
+
+void snd_wm8776_activate_ctl(struct snd_wm8776 *wm, char *ctl_name, bool active)
+{
+ struct snd_card *card = wm->card;
+ struct snd_kcontrol *kctl;
+ struct snd_kcontrol_volatile *vd;
+ struct snd_ctl_elem_id elem_id;
+ unsigned int index_offset;
+
+ memset(&elem_id, 0, sizeof(elem_id));
+ strncpy(elem_id.name, ctl_name, sizeof(elem_id.name));
+ elem_id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+ kctl = snd_ctl_find_id(card, &elem_id);
+ if (!kctl)
+ return;
+ index_offset = snd_ctl_get_ioff(kctl, &kctl->id);
+ vd = &kctl->vd[index_offset];
+ if (active)
+ vd->access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+ else
+ vd->access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+ snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_INFO, &kctl->id);
+}
+
+static void snd_wm8776_update_agc_ctl(struct snd_wm8776 *wm)
+{
+ int i, flags_on = 0, flags_off = 0;
+
+ switch (wm->agc_mode) {
+ case WM8776_AGC_OFF:
+ flags_off = WM8776_FLAG_LIM | WM8776_FLAG_ALC;
+ break;
+ case WM8776_AGC_LIM:
+ flags_off = WM8776_FLAG_ALC;
+ flags_on = WM8776_FLAG_LIM;
+ break;
+ case WM8776_AGC_ALC_R:
+ case WM8776_AGC_ALC_L:
+ case WM8776_AGC_ALC_STEREO:
+ flags_off = WM8776_FLAG_LIM;
+ flags_on = WM8776_FLAG_ALC;
+ break;
+ }
+
+ for (i = 0; i < WM8776_CTL_COUNT; i++)
+ if (wm->ctl[i].flags & flags_off)
+ snd_wm8776_activate_ctl(wm, wm->ctl[i].name, false);
+ else if (wm->ctl[i].flags & flags_on)
+ snd_wm8776_activate_ctl(wm, wm->ctl[i].name, true);
+}
+
+static void snd_wm8776_set_agc(struct snd_wm8776 *wm, u16 agc, u16 nothing)
+{
+ u16 alc1 = wm->regs[WM8776_REG_ALCCTRL1] & ~WM8776_ALC1_LCT_MASK;
+ u16 alc2 = wm->regs[WM8776_REG_ALCCTRL2] & ~WM8776_ALC2_LCEN;
+
+ switch (agc) {
+ case 0: /* Off */
+ wm->agc_mode = WM8776_AGC_OFF;
+ break;
+ case 1: /* Limiter */
+ alc2 |= WM8776_ALC2_LCEN;
+ wm->agc_mode = WM8776_AGC_LIM;
+ break;
+ case 2: /* ALC Right */
+ alc1 |= WM8776_ALC1_LCSEL_ALCR;
+ alc2 |= WM8776_ALC2_LCEN;
+ wm->agc_mode = WM8776_AGC_ALC_R;
+ break;
+ case 3: /* ALC Left */
+ alc1 |= WM8776_ALC1_LCSEL_ALCL;
+ alc2 |= WM8776_ALC2_LCEN;
+ wm->agc_mode = WM8776_AGC_ALC_L;
+ break;
+ case 4: /* ALC Stereo */
+ alc1 |= WM8776_ALC1_LCSEL_ALCSTEREO;
+ alc2 |= WM8776_ALC2_LCEN;
+ wm->agc_mode = WM8776_AGC_ALC_STEREO;
+ break;
+ }
+ snd_wm8776_write(wm, WM8776_REG_ALCCTRL1, alc1);
+ snd_wm8776_write(wm, WM8776_REG_ALCCTRL2, alc2);
+ snd_wm8776_update_agc_ctl(wm);
+}
+
+static void snd_wm8776_get_agc(struct snd_wm8776 *wm, u16 *mode, u16 *nothing)
+{
+ *mode = wm->agc_mode;
+}
+
+/* mixer controls */
+
+static const DECLARE_TLV_DB_SCALE(wm8776_hp_tlv, -7400, 100, 1);
+static const DECLARE_TLV_DB_SCALE(wm8776_dac_tlv, -12750, 50, 1);
+static const DECLARE_TLV_DB_SCALE(wm8776_adc_tlv, -10350, 50, 1);
+static const DECLARE_TLV_DB_SCALE(wm8776_lct_tlv, -1600, 100, 0);
+static const DECLARE_TLV_DB_SCALE(wm8776_maxgain_tlv, 0, 400, 0);
+static const DECLARE_TLV_DB_SCALE(wm8776_ngth_tlv, -7800, 600, 0);
+static const DECLARE_TLV_DB_SCALE(wm8776_maxatten_lim_tlv, -1200, 100, 0);
+static const DECLARE_TLV_DB_SCALE(wm8776_maxatten_alc_tlv, -2100, 400, 0);
+
+static struct snd_wm8776_ctl default_ctl[WM8776_CTL_COUNT] = {
+ [WM8776_CTL_DAC_VOL] = {
+ .name = "Master Playback Volume",
+ .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
+ .tlv = wm8776_dac_tlv,
+ .reg1 = WM8776_REG_DACLVOL,
+ .reg2 = WM8776_REG_DACRVOL,
+ .mask1 = WM8776_DACVOL_MASK,
+ .mask2 = WM8776_DACVOL_MASK,
+ .max = 0xff,
+ .flags = WM8776_FLAG_STEREO | WM8776_FLAG_VOL_UPDATE,
+ },
+ [WM8776_CTL_DAC_SW] = {
+ .name = "Master Playback Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_DACCTRL1,
+ .reg2 = WM8776_REG_DACCTRL1,
+ .mask1 = WM8776_DAC_PL_LL,
+ .mask2 = WM8776_DAC_PL_RR,
+ .flags = WM8776_FLAG_STEREO,
+ },
+ [WM8776_CTL_DAC_ZC_SW] = {
+ .name = "Master Zero Cross Detect Playback Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_DACCTRL1,
+ .mask1 = WM8776_DAC_DZCEN,
+ },
+ [WM8776_CTL_HP_VOL] = {
+ .name = "Headphone Playback Volume",
+ .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
+ .tlv = wm8776_hp_tlv,
+ .reg1 = WM8776_REG_HPLVOL,
+ .reg2 = WM8776_REG_HPRVOL,
+ .mask1 = WM8776_HPVOL_MASK,
+ .mask2 = WM8776_HPVOL_MASK,
+ .min = 0x2f,
+ .max = 0x7f,
+ .flags = WM8776_FLAG_STEREO | WM8776_FLAG_VOL_UPDATE,
+ },
+ [WM8776_CTL_HP_SW] = {
+ .name = "Headphone Playback Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_PWRDOWN,
+ .mask1 = WM8776_PWR_HPPD,
+ .flags = WM8776_FLAG_INVERT,
+ },
+ [WM8776_CTL_HP_ZC_SW] = {
+ .name = "Headphone Zero Cross Detect Playback Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_HPLVOL,
+ .reg2 = WM8776_REG_HPRVOL,
+ .mask1 = WM8776_VOL_HPZCEN,
+ .mask2 = WM8776_VOL_HPZCEN,
+ .flags = WM8776_FLAG_STEREO,
+ },
+ [WM8776_CTL_AUX_SW] = {
+ .name = "AUX Playback Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_OUTMUX,
+ .mask1 = WM8776_OUTMUX_AUX,
+ },
+ [WM8776_CTL_BYPASS_SW] = {
+ .name = "Bypass Playback Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_OUTMUX,
+ .mask1 = WM8776_OUTMUX_BYPASS,
+ },
+ [WM8776_CTL_DAC_IZD_SW] = {
+ .name = "Infinite Zero Detect Playback Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_DACCTRL1,
+ .mask1 = WM8776_DAC_IZD,
+ },
+ [WM8776_CTL_PHASE_SW] = {
+ .name = "Phase Invert Playback Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_PHASESWAP,
+ .reg2 = WM8776_REG_PHASESWAP,
+ .mask1 = WM8776_PHASE_INVERTL,
+ .mask2 = WM8776_PHASE_INVERTR,
+ .flags = WM8776_FLAG_STEREO,
+ },
+ [WM8776_CTL_DEEMPH_SW] = {
+ .name = "Deemphasis Playback Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_DACCTRL2,
+ .mask1 = WM8776_DAC2_DEEMPH,
+ },
+ [WM8776_CTL_ADC_VOL] = {
+ .name = "Input Capture Volume",
+ .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
+ .tlv = wm8776_adc_tlv,
+ .reg1 = WM8776_REG_ADCLVOL,
+ .reg2 = WM8776_REG_ADCRVOL,
+ .mask1 = WM8776_ADC_GAIN_MASK,
+ .mask2 = WM8776_ADC_GAIN_MASK,
+ .max = 0xff,
+ .flags = WM8776_FLAG_STEREO | WM8776_FLAG_VOL_UPDATE,
+ },
+ [WM8776_CTL_ADC_SW] = {
+ .name = "Input Capture Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_ADCMUX,
+ .reg2 = WM8776_REG_ADCMUX,
+ .mask1 = WM8776_ADC_MUTEL,
+ .mask2 = WM8776_ADC_MUTER,
+ .flags = WM8776_FLAG_STEREO | WM8776_FLAG_INVERT,
+ },
+ [WM8776_CTL_INPUT1_SW] = {
+ .name = "AIN1 Capture Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_ADCMUX,
+ .mask1 = WM8776_ADC_MUX_AIN1,
+ },
+ [WM8776_CTL_INPUT2_SW] = {
+ .name = "AIN2 Capture Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_ADCMUX,
+ .mask1 = WM8776_ADC_MUX_AIN2,
+ },
+ [WM8776_CTL_INPUT3_SW] = {
+ .name = "AIN3 Capture Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_ADCMUX,
+ .mask1 = WM8776_ADC_MUX_AIN3,
+ },
+ [WM8776_CTL_INPUT4_SW] = {
+ .name = "AIN4 Capture Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_ADCMUX,
+ .mask1 = WM8776_ADC_MUX_AIN4,
+ },
+ [WM8776_CTL_INPUT5_SW] = {
+ .name = "AIN5 Capture Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_ADCMUX,
+ .mask1 = WM8776_ADC_MUX_AIN5,
+ },
+ [WM8776_CTL_AGC_SEL] = {
+ .name = "AGC Select Capture Enum",
+ .type = SNDRV_CTL_ELEM_TYPE_ENUMERATED,
+ .enum_names = { "Off", "Limiter", "ALC Right", "ALC Left",
+ "ALC Stereo" },
+ .max = 5, /* .enum_names item count */
+ .set = snd_wm8776_set_agc,
+ .get = snd_wm8776_get_agc,
+ },
+ [WM8776_CTL_LIM_THR] = {
+ .name = "Limiter Threshold Capture Volume",
+ .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
+ .tlv = wm8776_lct_tlv,
+ .reg1 = WM8776_REG_ALCCTRL1,
+ .mask1 = WM8776_ALC1_LCT_MASK,
+ .max = 15,
+ .flags = WM8776_FLAG_LIM,
+ },
+ [WM8776_CTL_LIM_ATK] = {
+ .name = "Limiter Attack Time Capture Enum",
+ .type = SNDRV_CTL_ELEM_TYPE_ENUMERATED,
+ .enum_names = { "0.25 ms", "0.5 ms", "1 ms", "2 ms", "4 ms",
+ "8 ms", "16 ms", "32 ms", "64 ms", "128 ms", "256 ms" },
+ .max = 11, /* .enum_names item count */
+ .reg1 = WM8776_REG_ALCCTRL3,
+ .mask1 = WM8776_ALC3_ATK_MASK,
+ .flags = WM8776_FLAG_LIM,
+ },
+ [WM8776_CTL_LIM_DCY] = {
+ .name = "Limiter Decay Time Capture Enum",
+ .type = SNDRV_CTL_ELEM_TYPE_ENUMERATED,
+ .enum_names = { "1.2 ms", "2.4 ms", "4.8 ms", "9.6 ms",
+ "19.2 ms", "38.4 ms", "76.8 ms", "154 ms", "307 ms",
+ "614 ms", "1.23 s" },
+ .max = 11, /* .enum_names item count */
+ .reg1 = WM8776_REG_ALCCTRL3,
+ .mask1 = WM8776_ALC3_DCY_MASK,
+ .flags = WM8776_FLAG_LIM,
+ },
+ [WM8776_CTL_LIM_TRANWIN] = {
+ .name = "Limiter Transient Window Capture Enum",
+ .type = SNDRV_CTL_ELEM_TYPE_ENUMERATED,
+ .enum_names = { "0 us", "62.5 us", "125 us", "250 us", "500 us",
+ "1 ms", "2 ms", "4 ms" },
+ .max = 8, /* .enum_names item count */
+ .reg1 = WM8776_REG_LIMITER,
+ .mask1 = WM8776_LIM_TRANWIN_MASK,
+ .flags = WM8776_FLAG_LIM,
+ },
+ [WM8776_CTL_LIM_MAXATTN] = {
+ .name = "Limiter Maximum Attenuation Capture Volume",
+ .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
+ .tlv = wm8776_maxatten_lim_tlv,
+ .reg1 = WM8776_REG_LIMITER,
+ .mask1 = WM8776_LIM_MAXATTEN_MASK,
+ .min = 3,
+ .max = 12,
+ .flags = WM8776_FLAG_LIM | WM8776_FLAG_INVERT,
+ },
+ [WM8776_CTL_ALC_TGT] = {
+ .name = "ALC Target Level Capture Volume",
+ .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
+ .tlv = wm8776_lct_tlv,
+ .reg1 = WM8776_REG_ALCCTRL1,
+ .mask1 = WM8776_ALC1_LCT_MASK,
+ .max = 15,
+ .flags = WM8776_FLAG_ALC,
+ },
+ [WM8776_CTL_ALC_ATK] = {
+ .name = "ALC Attack Time Capture Enum",
+ .type = SNDRV_CTL_ELEM_TYPE_ENUMERATED,
+ .enum_names = { "8.40 ms", "16.8 ms", "33.6 ms", "67.2 ms",
+ "134 ms", "269 ms", "538 ms", "1.08 s", "2.15 s",
+ "4.3 s", "8.6 s" },
+ .max = 11, /* .enum_names item count */
+ .reg1 = WM8776_REG_ALCCTRL3,
+ .mask1 = WM8776_ALC3_ATK_MASK,
+ .flags = WM8776_FLAG_ALC,
+ },
+ [WM8776_CTL_ALC_DCY] = {
+ .name = "ALC Decay Time Capture Enum",
+ .type = SNDRV_CTL_ELEM_TYPE_ENUMERATED,
+ .enum_names = { "33.5 ms", "67.0 ms", "134 ms", "268 ms",
+ "536 ms", "1.07 s", "2.14 s", "4.29 s", "8.58 s",
+ "17.2 s", "34.3 s" },
+ .max = 11, /* .enum_names item count */
+ .reg1 = WM8776_REG_ALCCTRL3,
+ .mask1 = WM8776_ALC3_DCY_MASK,
+ .flags = WM8776_FLAG_ALC,
+ },
+ [WM8776_CTL_ALC_MAXGAIN] = {
+ .name = "ALC Maximum Gain Capture Volume",
+ .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
+ .tlv = wm8776_maxgain_tlv,
+ .reg1 = WM8776_REG_ALCCTRL1,
+ .mask1 = WM8776_ALC1_MAXGAIN_MASK,
+ .min = 1,
+ .max = 7,
+ .flags = WM8776_FLAG_ALC,
+ },
+ [WM8776_CTL_ALC_MAXATTN] = {
+ .name = "ALC Maximum Attenuation Capture Volume",
+ .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
+ .tlv = wm8776_maxatten_alc_tlv,
+ .reg1 = WM8776_REG_LIMITER,
+ .mask1 = WM8776_LIM_MAXATTEN_MASK,
+ .min = 10,
+ .max = 15,
+ .flags = WM8776_FLAG_ALC | WM8776_FLAG_INVERT,
+ },
+ [WM8776_CTL_ALC_HLD] = {
+ .name = "ALC Hold Time Capture Enum",
+ .type = SNDRV_CTL_ELEM_TYPE_ENUMERATED,
+ .enum_names = { "0 ms", "2.67 ms", "5.33 ms", "10.6 ms",
+ "21.3 ms", "42.7 ms", "85.3 ms", "171 ms", "341 ms",
+ "683 ms", "1.37 s", "2.73 s", "5.46 s", "10.9 s",
+ "21.8 s", "43.7 s" },
+ .max = 16, /* .enum_names item count */
+ .reg1 = WM8776_REG_ALCCTRL2,
+ .mask1 = WM8776_ALC2_HOLD_MASK,
+ .flags = WM8776_FLAG_ALC,
+ },
+ [WM8776_CTL_NGT_SW] = {
+ .name = "Noise Gate Capture Switch",
+ .type = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
+ .reg1 = WM8776_REG_NOISEGATE,
+ .mask1 = WM8776_NGAT_ENABLE,
+ .flags = WM8776_FLAG_ALC,
+ },
+ [WM8776_CTL_NGT_THR] = {
+ .name = "Noise Gate Threshold Capture Volume",
+ .type = SNDRV_CTL_ELEM_TYPE_INTEGER,
+ .tlv = wm8776_ngth_tlv,
+ .reg1 = WM8776_REG_NOISEGATE,
+ .mask1 = WM8776_NGAT_THR_MASK,
+ .max = 7,
+ .flags = WM8776_FLAG_ALC,
+ },
+};
+
+/* exported functions */
+
+void snd_wm8776_init(struct snd_wm8776 *wm)
+{
+ int i;
+ static const u16 default_values[] = {
+ 0x000, 0x100, 0x000,
+ 0x000, 0x100, 0x000,
+ 0x000, 0x090, 0x000, 0x000,
+ 0x022, 0x022, 0x022,
+ 0x008, 0x0cf, 0x0cf, 0x07b, 0x000,
+ 0x032, 0x000, 0x0a6, 0x001, 0x001
+ };
+
+ memcpy(wm->ctl, default_ctl, sizeof(wm->ctl));
+
+ snd_wm8776_write(wm, WM8776_REG_RESET, 0x00); /* reset */
+ udelay(10);
+ /* load defaults */
+ for (i = 0; i < ARRAY_SIZE(default_values); i++)
+ snd_wm8776_write(wm, i, default_values[i]);
+}
+EXPORT_SYMBOL(snd_wm8776_init);
+
+void snd_wm8776_set_dac_if(struct snd_wm8776 *wm, u16 dac)
+{
+ snd_wm8776_write(wm, WM8776_REG_DACIFCTRL, dac);
+}
+EXPORT_SYMBOL(snd_wm8776_set_dac_if);
+
+void snd_wm8776_set_adc_if(struct snd_wm8776 *wm, u16 adc)
+{
+ snd_wm8776_write(wm, WM8776_REG_ADCIFCTRL, adc);
+}
+EXPORT_SYMBOL(snd_wm8776_set_adc_if);
+
+void snd_wm8776_set_master_mode(struct snd_wm8776 *wm, u16 mode)
+{
+ snd_wm8776_write(wm, WM8776_REG_MSTRCTRL, mode);
+}
+EXPORT_SYMBOL(snd_wm8776_set_master_mode);
+
+void snd_wm8776_set_power(struct snd_wm8776 *wm, u16 power)
+{
+ snd_wm8776_write(wm, WM8776_REG_PWRDOWN, power);
+}
+EXPORT_SYMBOL(snd_wm8776_set_power);
+
+void snd_wm8776_volume_restore(struct snd_wm8776 *wm)
+{
+ u16 val = wm->regs[WM8776_REG_DACRVOL];
+ /* restore volume after MCLK stopped */
+ snd_wm8776_write(wm, WM8776_REG_DACRVOL, val | WM8776_VOL_UPDATE);
+}
+EXPORT_SYMBOL(snd_wm8776_volume_restore);
+
+/* mixer callbacks */
+
+static int snd_wm8776_volume_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct snd_wm8776 *wm = snd_kcontrol_chip(kcontrol);
+ int n = kcontrol->private_value;
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = (wm->ctl[n].flags & WM8776_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_wm8776_enum_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct snd_wm8776 *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_wm8776_ctl_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_wm8776 *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 & WM8776_FLAG_STEREO) {
+ val2 = wm->regs[wm->ctl[n].reg2] & wm->ctl[n].mask2;
+ val2 >>= __ffs(wm->ctl[n].mask2);
+ if (wm->ctl[n].flags & WM8776_FLAG_VOL_UPDATE)
+ val2 &= ~WM8776_VOL_UPDATE;
+ }
+ }
+ if (wm->ctl[n].flags & WM8776_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 & WM8776_FLAG_STEREO)
+ ucontrol->value.integer.value[1] = val2;
+
+ return 0;
+}
+
+static int snd_wm8776_ctl_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_wm8776 *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 & WM8776_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 & WM8776_FLAG_STEREO &&
+ wm->ctl[n].reg1 == wm->ctl[n].reg2) {
+ val &= ~wm->ctl[n].mask2;
+ val |= regval2 << __ffs(wm->ctl[n].mask2);
+ }
+ snd_wm8776_write(wm, wm->ctl[n].reg1, val);
+ /* stereo controls in different registers */
+ if (wm->ctl[n].flags & WM8776_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 & WM8776_FLAG_VOL_UPDATE)
+ val |= WM8776_VOL_UPDATE;
+ snd_wm8776_write(wm, wm->ctl[n].reg2, val);
+ }
+ }
+
+ return 0;
+}
+
+int snd_wm8776_add_control(struct snd_wm8776 *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 & WM8776_FLAG_LIM ||
+ wm->ctl[num].flags & WM8776_FLAG_ALC)
+ cont.access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+ cont.tlv.p = NULL;
+ cont.get = snd_wm8776_ctl_get;
+ cont.put = snd_wm8776_ctl_put;
+
+ switch (wm->ctl[num].type) {
+ case SNDRV_CTL_ELEM_TYPE_INTEGER:
+ cont.info = snd_wm8776_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 & WM8776_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_wm8776_enum_info;
+ break;
+ default:
+ return -EINVAL;
+ }
+ ctl = snd_ctl_new1(&cont, wm);
+ if (!ctl)
+ return -ENOMEM;
+
+ return snd_ctl_add(wm->card, ctl);
+}
+
+int snd_wm8776_build_controls(struct snd_wm8776 *wm)
+{
+ int err, i;
+
+ for (i = 0; i < WM8776_CTL_COUNT; i++)
+ if (wm->ctl[i].name) {
+ err = snd_wm8776_add_control(wm, i);
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(snd_wm8776_build_controls);
+
+static int __init alsa_wm8776_module_init(void)
+{
+ return 0;
+}
+
+static void __exit alsa_wm8776_module_exit(void)
+{
+}
+
+module_init(alsa_wm8776_module_init)
+module_exit(alsa_wm8776_module_exit)
--
Ondrej Zary
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