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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* ALSA driver for ICEnsemble VT17xx
*
* Lowlevel functions for WM8776 codec
*
* Copyright (c) 2012 Ondrej Zary <linux@rainbow-software.org>
*/
#include <linux/delay.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/tlv.h>
#include "wm8776.h"
/* low-level access */
static 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 */
static void snd_wm8776_activate_ctl(struct snd_wm8776 *wm,
const 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));
strlcpy(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 snd_wm8776_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
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