// SPDX-License-Identifier: GPL-2.0-or-later
/*
* wm8580.c -- WM8580 and WM8581 ALSA Soc Audio driver
*
* Copyright 2008-12 Wolfson Microelectronics PLC.
*
* Notes:
* The WM8580 is a multichannel codec with S/PDIF support, featuring six
* DAC channels and two ADC channels.
*
* The WM8581 is a multichannel codec with S/PDIF support, featuring eight
* DAC channels and two ADC channels.
*
* Currently only the primary audio interface is supported - S/PDIF and
* the secondary audio interfaces are not.
*/
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <sound/initval.h>
#include <asm /div64.h>
#include "wm8580.h"
/* WM8580 register space */
#define WM8580_PLLA1 0 x00
#define WM8580_PLLA2 0 x01
#define WM8580_PLLA3 0 x02
#define WM8580_PLLA4 0 x03
#define WM8580_PLLB1 0 x04
#define WM8580_PLLB2 0 x05
#define WM8580_PLLB3 0 x06
#define WM8580_PLLB4 0 x07
#define WM8580_CLKSEL 0 x08
#define WM8580_PAIF1 0 x09
#define WM8580_PAIF2 0 x0A
#define WM8580_SAIF1 0 x0B
#define WM8580_PAIF3 0 x0C
#define WM8580_PAIF4 0 x0D
#define WM8580_SAIF2 0 x0E
#define WM8580_DAC_CONTROL1 0 x0F
#define WM8580_DAC_CONTROL2 0 x10
#define WM8580_DAC_CONTROL3 0 x11
#define WM8580_DAC_CONTROL4 0 x12
#define WM8580_DAC_CONTROL5 0 x13
#define WM8580_DIGITAL_ATTENUATION_DACL1 0 x14
#define WM8580_DIGITAL_ATTENUATION_DACR1 0 x15
#define WM8580_DIGITAL_ATTENUATION_DACL2 0 x16
#define WM8580_DIGITAL_ATTENUATION_DACR2 0 x17
#define WM8580_DIGITAL_ATTENUATION_DACL3 0 x18
#define WM8580_DIGITAL_ATTENUATION_DACR3 0 x19
#define WM8581_DIGITAL_ATTENUATION_DACL4 0 x1A
#define WM8581_DIGITAL_ATTENUATION_DACR4 0 x1B
#define WM8580_MASTER_DIGITAL_ATTENUATION 0 x1C
#define WM8580_ADC_CONTROL1 0 x1D
#define WM8580_SPDTXCHAN0 0 x1E
#define WM8580_SPDTXCHAN1 0 x1F
#define WM8580_SPDTXCHAN2 0 x20
#define WM8580_SPDTXCHAN3 0 x21
#define WM8580_SPDTXCHAN4 0 x22
#define WM8580_SPDTXCHAN5 0 x23
#define WM8580_SPDMODE 0 x24
#define WM8580_INTMASK 0 x25
#define WM8580_GPO1 0 x26
#define WM8580_GPO2 0 x27
#define WM8580_GPO3 0 x28
#define WM8580_GPO4 0 x29
#define WM8580_GPO5 0 x2A
#define WM8580_INTSTAT 0 x2B
#define WM8580_SPDRXCHAN1 0 x2C
#define WM8580_SPDRXCHAN2 0 x2D
#define WM8580_SPDRXCHAN3 0 x2E
#define WM8580_SPDRXCHAN4 0 x2F
#define WM8580_SPDRXCHAN5 0 x30
#define WM8580_SPDSTAT 0 x31
#define WM8580_PWRDN1 0 x32
#define WM8580_PWRDN2 0 x33
#define WM8580_READBACK 0 x34
#define WM8580_RESET 0 x35
#define WM8580_MAX_REGISTER 0 x35
#define WM8580_DACOSR 0 x40
/* PLLB4 (register 7h) */
#define WM8580_PLLB4_MCLKOUTSRC_MASK 0 x60
#define WM8580_PLLB4_MCLKOUTSRC_PLLA 0 x20
#define WM8580_PLLB4_MCLKOUTSRC_PLLB 0 x40
#define WM8580_PLLB4_MCLKOUTSRC_OSC 0 x60
#define WM8580_PLLB4_CLKOUTSRC_MASK 0 x180
#define WM8580_PLLB4_CLKOUTSRC_PLLACLK 0 x080
#define WM8580_PLLB4_CLKOUTSRC_PLLBCLK 0 x100
#define WM8580_PLLB4_CLKOUTSRC_OSCCLK 0 x180
/* CLKSEL (register 8h) */
#define WM8580_CLKSEL_DAC_CLKSEL_MASK 0 x03
#define WM8580_CLKSEL_DAC_CLKSEL_PLLA 0 x01
#define WM8580_CLKSEL_DAC_CLKSEL_PLLB 0 x02
/* AIF control 1 (registers 9h-bh) */
#define WM8580_AIF_RATE_MASK 0 x7
#define WM8580_AIF_BCLKSEL_MASK 0 x18
#define WM8580_AIF_MS 0 x20
#define WM8580_AIF_CLKSRC_MASK 0 xc0
#define WM8580_AIF_CLKSRC_PLLA 0 x40
#define WM8580_AIF_CLKSRC_PLLB 0 x40
#define WM8580_AIF_CLKSRC_MCLK 0 xc0
/* AIF control 2 (registers ch-eh) */
#define WM8580_AIF_FMT_MASK 0 x03
#define WM8580_AIF_FMT_RIGHTJ 0 x00
#define WM8580_AIF_FMT_LEFTJ 0 x01
#define WM8580_AIF_FMT_I2S 0 x02
#define WM8580_AIF_FMT_DSP 0 x03
#define WM8580_AIF_LENGTH_MASK 0 x0c
#define WM8580_AIF_LENGTH_16 0 x00
#define WM8580_AIF_LENGTH_20 0 x04
#define WM8580_AIF_LENGTH_24 0 x08
#define WM8580_AIF_LENGTH_32 0 x0c
#define WM8580_AIF_LRP 0 x10
#define WM8580_AIF_BCP 0 x20
/* Powerdown Register 1 (register 32h) */
#define WM8580_PWRDN1_PWDN 0 x001
#define WM8580_PWRDN1_ALLDACPD 0 x040
/* Powerdown Register 2 (register 33h) */
#define WM8580_PWRDN2_OSSCPD 0 x001
#define WM8580_PWRDN2_PLLAPD 0 x002
#define WM8580_PWRDN2_PLLBPD 0 x004
#define WM8580_PWRDN2_SPDIFPD 0 x008
#define WM8580_PWRDN2_SPDIFTXD 0 x010
#define WM8580_PWRDN2_SPDIFRXD 0 x020
#define WM8580_DAC_CONTROL5_MUTEALL 0 x10
/*
* wm8580 register cache
* We can't read the WM8580 register space when we
* are using 2 wire for device control, so we cache them instead.
*/
static const struct reg_default wm8580_reg_defaults[] = {
{ 0 , 0 x0121 },
{ 1 , 0 x017e },
{ 2 , 0 x007d },
{ 3 , 0 x0014 },
{ 4 , 0 x0121 },
{ 5 , 0 x017e },
{ 6 , 0 x007d },
{ 7 , 0 x0194 },
{ 8 , 0 x0010 },
{ 9 , 0 x0002 },
{ 10 , 0 x0002 },
{ 11 , 0 x00c2 },
{ 12 , 0 x0182 },
{ 13 , 0 x0082 },
{ 14 , 0 x000a },
{ 15 , 0 x0024 },
{ 16 , 0 x0009 },
{ 17 , 0 x0000 },
{ 18 , 0 x00ff },
{ 19 , 0 x0000 },
{ 20 , 0 x00ff },
{ 21 , 0 x00ff },
{ 22 , 0 x00ff },
{ 23 , 0 x00ff },
{ 24 , 0 x00ff },
{ 25 , 0 x00ff },
{ 26 , 0 x00ff },
{ 27 , 0 x00ff },
{ 28 , 0 x01f0 },
{ 29 , 0 x0040 },
{ 30 , 0 x0000 },
{ 31 , 0 x0000 },
{ 32 , 0 x0000 },
{ 33 , 0 x0000 },
{ 34 , 0 x0031 },
{ 35 , 0 x000b },
{ 36 , 0 x0039 },
{ 37 , 0 x0000 },
{ 38 , 0 x0010 },
{ 39 , 0 x0032 },
{ 40 , 0 x0054 },
{ 41 , 0 x0076 },
{ 42 , 0 x0098 },
{ 43 , 0 x0000 },
{ 44 , 0 x0000 },
{ 45 , 0 x0000 },
{ 46 , 0 x0000 },
{ 47 , 0 x0000 },
{ 48 , 0 x0000 },
{ 49 , 0 x0000 },
{ 50 , 0 x005e },
{ 51 , 0 x003e },
{ 52 , 0 x0000 },
};
static bool wm8580_volatile(struct device *dev, unsigned int reg)
{
switch (reg) {
case WM8580_RESET:
return true ;
default :
return false ;
}
}
struct pll_state {
unsigned int in;
unsigned int out;
};
#define WM8580_NUM_SUPPLIES 3
static const char *wm8580_supply_names[WM8580_NUM_SUPPLIES] = {
"AVDD" ,
"DVDD" ,
"PVDD" ,
};
struct wm8580_driver_data {
int num_dacs;
};
/* codec private data */
struct wm8580_priv {
struct regmap *regmap;
struct regulator_bulk_data supplies[WM8580_NUM_SUPPLIES];
struct pll_state a;
struct pll_state b;
const struct wm8580_driver_data *drvdata;
int sysclk[2 ];
};
static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750 , 50 , 1 );
static int wm8580_out_vu(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct wm8580_priv *wm8580 = snd_soc_component_get_drvdata(component);
unsigned int reg = mc->reg;
unsigned int reg2 = mc->rreg;
int ret;
/* Clear the register cache VU so we write without VU set */
regcache_cache_only(wm8580->regmap, true );
regmap_update_bits(wm8580->regmap, reg, 0 x100, 0 x000);
regmap_update_bits(wm8580->regmap, reg2, 0 x100, 0 x000);
regcache_cache_only(wm8580->regmap, false );
ret = snd_soc_put_volsw(kcontrol, ucontrol);
if (ret < 0 )
return ret;
/* Now write again with the volume update bit set */
snd_soc_component_update_bits(component, reg, 0 x100, 0 x100);
snd_soc_component_update_bits(component, reg2, 0 x100, 0 x100);
return 0 ;
}
static const struct snd_kcontrol_new wm8580_snd_controls[] = {
SOC_DOUBLE_R_EXT_TLV("DAC1 Playback Volume" ,
WM8580_DIGITAL_ATTENUATION_DACL1,
WM8580_DIGITAL_ATTENUATION_DACR1,
0 , 0 xff, 0 , snd_soc_get_volsw, wm8580_out_vu, dac_tlv),
SOC_DOUBLE_R_EXT_TLV("DAC2 Playback Volume" ,
WM8580_DIGITAL_ATTENUATION_DACL2,
WM8580_DIGITAL_ATTENUATION_DACR2,
0 , 0 xff, 0 , snd_soc_get_volsw, wm8580_out_vu, dac_tlv),
SOC_DOUBLE_R_EXT_TLV("DAC3 Playback Volume" ,
WM8580_DIGITAL_ATTENUATION_DACL3,
WM8580_DIGITAL_ATTENUATION_DACR3,
0 , 0 xff, 0 , snd_soc_get_volsw, wm8580_out_vu, dac_tlv),
SOC_SINGLE("DAC1 Deemphasis Switch" , WM8580_DAC_CONTROL3, 0 , 1 , 0 ),
SOC_SINGLE("DAC2 Deemphasis Switch" , WM8580_DAC_CONTROL3, 1 , 1 , 0 ),
SOC_SINGLE("DAC3 Deemphasis Switch" , WM8580_DAC_CONTROL3, 2 , 1 , 0 ),
SOC_DOUBLE("DAC1 Invert Switch" , WM8580_DAC_CONTROL4, 0 , 1 , 1 , 0 ),
SOC_DOUBLE("DAC2 Invert Switch" , WM8580_DAC_CONTROL4, 2 , 3 , 1 , 0 ),
SOC_DOUBLE("DAC3 Invert Switch" , WM8580_DAC_CONTROL4, 4 , 5 , 1 , 0 ),
SOC_SINGLE("DAC ZC Switch" , WM8580_DAC_CONTROL5, 5 , 1 , 0 ),
SOC_SINGLE("DAC1 Switch" , WM8580_DAC_CONTROL5, 0 , 1 , 1 ),
SOC_SINGLE("DAC2 Switch" , WM8580_DAC_CONTROL5, 1 , 1 , 1 ),
SOC_SINGLE("DAC3 Switch" , WM8580_DAC_CONTROL5, 2 , 1 , 1 ),
SOC_DOUBLE("Capture Switch" , WM8580_ADC_CONTROL1, 0 , 1 , 1 , 1 ),
SOC_SINGLE("Capture High-Pass Filter Switch" , WM8580_ADC_CONTROL1, 4 , 1 , 0 ),
};
static const struct snd_kcontrol_new wm8581_snd_controls[] = {
SOC_DOUBLE_R_EXT_TLV("DAC4 Playback Volume" ,
WM8581_DIGITAL_ATTENUATION_DACL4,
WM8581_DIGITAL_ATTENUATION_DACR4,
0 , 0 xff, 0 , snd_soc_get_volsw, wm8580_out_vu, dac_tlv),
SOC_SINGLE("DAC4 Deemphasis Switch" , WM8580_DAC_CONTROL3, 3 , 1 , 0 ),
SOC_DOUBLE("DAC4 Invert Switch" , WM8580_DAC_CONTROL4, 8 , 7 , 1 , 0 ),
SOC_SINGLE("DAC4 Switch" , WM8580_DAC_CONTROL5, 3 , 1 , 1 ),
};
static const struct snd_soc_dapm_widget wm8580_dapm_widgets[] = {
SND_SOC_DAPM_DAC("DAC1" , "Playback" , WM8580_PWRDN1, 2 , 1 ),
SND_SOC_DAPM_DAC("DAC2" , "Playback" , WM8580_PWRDN1, 3 , 1 ),
SND_SOC_DAPM_DAC("DAC3" , "Playback" , WM8580_PWRDN1, 4 , 1 ),
SND_SOC_DAPM_OUTPUT("VOUT1L" ),
SND_SOC_DAPM_OUTPUT("VOUT1R" ),
SND_SOC_DAPM_OUTPUT("VOUT2L" ),
SND_SOC_DAPM_OUTPUT("VOUT2R" ),
SND_SOC_DAPM_OUTPUT("VOUT3L" ),
SND_SOC_DAPM_OUTPUT("VOUT3R" ),
SND_SOC_DAPM_ADC("ADC" , "Capture" , WM8580_PWRDN1, 1 , 1 ),
SND_SOC_DAPM_INPUT("AINL" ),
SND_SOC_DAPM_INPUT("AINR" ),
};
static const struct snd_soc_dapm_widget wm8581_dapm_widgets[] = {
SND_SOC_DAPM_DAC("DAC4" , "Playback" , WM8580_PWRDN1, 5 , 1 ),
SND_SOC_DAPM_OUTPUT("VOUT4L" ),
SND_SOC_DAPM_OUTPUT("VOUT4R" ),
};
static const struct snd_soc_dapm_route wm8580_dapm_routes[] = {
{ "VOUT1L" , NULL, "DAC1" },
{ "VOUT1R" , NULL, "DAC1" },
{ "VOUT2L" , NULL, "DAC2" },
{ "VOUT2R" , NULL, "DAC2" },
{ "VOUT3L" , NULL, "DAC3" },
{ "VOUT3R" , NULL, "DAC3" },
{ "ADC" , NULL, "AINL" },
{ "ADC" , NULL, "AINR" },
};
static const struct snd_soc_dapm_route wm8581_dapm_routes[] = {
{ "VOUT4L" , NULL, "DAC4" },
{ "VOUT4R" , NULL, "DAC4" },
};
/* PLL divisors */
struct _pll_div {
u32 prescale:1 ;
u32 postscale:1 ;
u32 freqmode:2 ;
u32 n:4 ;
u32 k:24 ;
};
/* The size in bits of the pll divide */
#define FIXED_PLL_SIZE (1 << 22 )
/* PLL rate to output rate divisions */
static struct {
unsigned int div;
unsigned int freqmode;
unsigned int postscale;
} post_table[] = {
{ 2 , 0 , 0 },
{ 4 , 0 , 1 },
{ 4 , 1 , 0 },
{ 8 , 1 , 1 },
{ 8 , 2 , 0 },
{ 16 , 2 , 1 },
{ 12 , 3 , 0 },
{ 24 , 3 , 1 }
};
static int pll_factors(struct _pll_div *pll_div, unsigned int target,
unsigned int source)
{
u64 Kpart;
unsigned int K, Ndiv, Nmod;
int i;
pr_debug("wm8580: PLL %uHz->%uHz\n" , source, target);
/* Scale the output frequency up; the PLL should run in the
* region of 90-100MHz.
*/
for (i = 0 ; i < ARRAY_SIZE(post_table); i++) {
if (target * post_table[i].div >= 90000000 &&
target * post_table[i].div <= 100000000 ) {
pll_div->freqmode = post_table[i].freqmode;
pll_div->postscale = post_table[i].postscale;
target *= post_table[i].div;
break ;
}
}
if (i == ARRAY_SIZE(post_table)) {
printk(KERN_ERR "wm8580: Unable to scale output frequency "
"%u\n" , target);
return -EINVAL;
}
Ndiv = target / source;
if (Ndiv < 5 ) {
source /= 2 ;
pll_div->prescale = 1 ;
Ndiv = target / source;
} else
pll_div->prescale = 0 ;
if ((Ndiv < 5 ) || (Ndiv > 13 )) {
printk(KERN_ERR
"WM8580 N=%u outside supported range\n" , Ndiv);
return -EINVAL;
}
pll_div->n = Ndiv;
Nmod = target % source;
Kpart = FIXED_PLL_SIZE * (long long )Nmod;
do_div(Kpart, source);
K = Kpart & 0 xFFFFFFFF;
pll_div->k = K;
pr_debug("PLL %x.%x prescale %d freqmode %d postscale %d\n" ,
pll_div->n, pll_div->k, pll_div->prescale, pll_div->freqmode,
pll_div->postscale);
return 0 ;
}
static int wm8580_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
int source, unsigned int freq_in, unsigned int freq_out)
{
int offset;
struct snd_soc_component *component = codec_dai->component;
struct wm8580_priv *wm8580 = snd_soc_component_get_drvdata(component);
struct pll_state *state;
struct _pll_div pll_div;
unsigned int reg;
unsigned int pwr_mask;
int ret;
/* GCC isn't able to work out the ifs below for initialising/using
* pll_div so suppress warnings.
*/
memset(&pll_div, 0 , sizeof (pll_div));
switch (pll_id) {
case WM8580_PLLA:
state = &wm8580->a;
offset = 0 ;
pwr_mask = WM8580_PWRDN2_PLLAPD;
break ;
case WM8580_PLLB:
state = &wm8580->b;
offset = 4 ;
pwr_mask = WM8580_PWRDN2_PLLBPD;
break ;
default :
return -ENODEV;
}
if (freq_in && freq_out) {
ret = pll_factors(&pll_div, freq_out, freq_in);
if (ret != 0 )
return ret;
}
state->in = freq_in;
state->out = freq_out;
/* Always disable the PLL - it is not safe to leave it running
* while reprogramming it.
*/
snd_soc_component_update_bits(component, WM8580_PWRDN2, pwr_mask, pwr_mask);
if (!freq_in || !freq_out)
return 0 ;
snd_soc_component_write(component, WM8580_PLLA1 + offset, pll_div.k & 0 x1ff);
snd_soc_component_write(component, WM8580_PLLA2 + offset, (pll_div.k >> 9 ) & 0 x1ff);
snd_soc_component_write(component, WM8580_PLLA3 + offset,
(pll_div.k >> 18 & 0 xf) | (pll_div.n << 4 ));
reg = snd_soc_component_read(component, WM8580_PLLA4 + offset);
reg &= ~0 x1b;
reg |= pll_div.prescale | pll_div.postscale << 1 |
pll_div.freqmode << 3 ;
snd_soc_component_write(component, WM8580_PLLA4 + offset, reg);
/* All done, turn it on */
snd_soc_component_update_bits(component, WM8580_PWRDN2, pwr_mask, 0 );
return 0 ;
}
static const int wm8580_sysclk_ratios[] = {
128 , 192 , 256 , 384 , 512 , 768 , 1152 ,
};
/*
* Set PCM DAI bit size and sample rate.
*/
static int wm8580_paif_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct wm8580_priv *wm8580 = snd_soc_component_get_drvdata(component);
u16 paifa = 0 ;
u16 paifb = 0 ;
int i, ratio, osr;
/* bit size */
switch (params_width(params)) {
case 16 :
paifa |= 0 x8;
break ;
case 20 :
paifa |= 0 x0;
paifb |= WM8580_AIF_LENGTH_20;
break ;
case 24 :
paifa |= 0 x0;
paifb |= WM8580_AIF_LENGTH_24;
break ;
case 32 :
paifa |= 0 x0;
paifb |= WM8580_AIF_LENGTH_32;
break ;
default :
return -EINVAL;
}
/* Look up the SYSCLK ratio; accept only exact matches */
ratio = wm8580->sysclk[dai->driver->id] / params_rate(params);
for (i = 0 ; i < ARRAY_SIZE(wm8580_sysclk_ratios); i++)
if (ratio == wm8580_sysclk_ratios[i])
break ;
if (i == ARRAY_SIZE(wm8580_sysclk_ratios)) {
dev_err(component->dev, "Invalid clock ratio %d/%d\n" ,
wm8580->sysclk[dai->driver->id], params_rate(params));
return -EINVAL;
}
paifa |= i;
dev_dbg(component->dev, "Running at %dfs with %dHz clock\n" ,
wm8580_sysclk_ratios[i], wm8580->sysclk[dai->driver->id]);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
switch (ratio) {
case 128 :
case 192 :
osr = WM8580_DACOSR;
dev_dbg(component->dev, "Selecting 64x OSR\n" );
break ;
default :
osr = 0 ;
dev_dbg(component->dev, "Selecting 128x OSR\n" );
break ;
}
snd_soc_component_update_bits(component, WM8580_PAIF3, WM8580_DACOSR, osr);
}
snd_soc_component_update_bits(component, WM8580_PAIF1 + dai->driver->id,
WM8580_AIF_RATE_MASK | WM8580_AIF_BCLKSEL_MASK,
paifa);
snd_soc_component_update_bits(component, WM8580_PAIF3 + dai->driver->id,
WM8580_AIF_LENGTH_MASK, paifb);
return 0 ;
}
static int wm8580_set_paif_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_component *component = codec_dai->component;
unsigned int aifa;
unsigned int aifb;
int can_invert_lrclk;
aifa = snd_soc_component_read(component, WM8580_PAIF1 + codec_dai->driver->id);
aifb = snd_soc_component_read(component, WM8580_PAIF3 + codec_dai->driver->id);
aifb &= ~(WM8580_AIF_FMT_MASK | WM8580_AIF_LRP | WM8580_AIF_BCP);
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBC_CFC:
aifa &= ~WM8580_AIF_MS;
break ;
case SND_SOC_DAIFMT_CBP_CFP:
aifa |= WM8580_AIF_MS;
break ;
default :
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
can_invert_lrclk = 1 ;
aifb |= WM8580_AIF_FMT_I2S;
break ;
case SND_SOC_DAIFMT_RIGHT_J:
can_invert_lrclk = 1 ;
aifb |= WM8580_AIF_FMT_RIGHTJ;
break ;
case SND_SOC_DAIFMT_LEFT_J:
can_invert_lrclk = 1 ;
aifb |= WM8580_AIF_FMT_LEFTJ;
break ;
case SND_SOC_DAIFMT_DSP_A:
can_invert_lrclk = 0 ;
aifb |= WM8580_AIF_FMT_DSP;
break ;
case SND_SOC_DAIFMT_DSP_B:
can_invert_lrclk = 0 ;
aifb |= WM8580_AIF_FMT_DSP;
aifb |= WM8580_AIF_LRP;
break ;
default :
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break ;
case SND_SOC_DAIFMT_IB_IF:
if (!can_invert_lrclk)
return -EINVAL;
aifb |= WM8580_AIF_BCP;
aifb |= WM8580_AIF_LRP;
break ;
case SND_SOC_DAIFMT_IB_NF:
aifb |= WM8580_AIF_BCP;
break ;
case SND_SOC_DAIFMT_NB_IF:
if (!can_invert_lrclk)
return -EINVAL;
aifb |= WM8580_AIF_LRP;
break ;
default :
return -EINVAL;
}
snd_soc_component_write(component, WM8580_PAIF1 + codec_dai->driver->id, aifa);
snd_soc_component_write(component, WM8580_PAIF3 + codec_dai->driver->id, aifb);
return 0 ;
}
static int wm8580_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
int div_id, int div)
{
struct snd_soc_component *component = codec_dai->component;
unsigned int reg;
switch (div_id) {
case WM8580_MCLK:
reg = snd_soc_component_read(component, WM8580_PLLB4);
reg &= ~WM8580_PLLB4_MCLKOUTSRC_MASK;
switch (div) {
case WM8580_CLKSRC_MCLK:
/* Input */
break ;
case WM8580_CLKSRC_PLLA:
reg |= WM8580_PLLB4_MCLKOUTSRC_PLLA;
break ;
case WM8580_CLKSRC_PLLB:
reg |= WM8580_PLLB4_MCLKOUTSRC_PLLB;
break ;
case WM8580_CLKSRC_OSC:
reg |= WM8580_PLLB4_MCLKOUTSRC_OSC;
break ;
default :
return -EINVAL;
}
snd_soc_component_write(component, WM8580_PLLB4, reg);
break ;
case WM8580_CLKOUTSRC:
reg = snd_soc_component_read(component, WM8580_PLLB4);
reg &= ~WM8580_PLLB4_CLKOUTSRC_MASK;
switch (div) {
case WM8580_CLKSRC_NONE:
break ;
case WM8580_CLKSRC_PLLA:
reg |= WM8580_PLLB4_CLKOUTSRC_PLLACLK;
break ;
case WM8580_CLKSRC_PLLB:
reg |= WM8580_PLLB4_CLKOUTSRC_PLLBCLK;
break ;
case WM8580_CLKSRC_OSC:
reg |= WM8580_PLLB4_CLKOUTSRC_OSCCLK;
break ;
default :
return -EINVAL;
}
snd_soc_component_write(component, WM8580_PLLB4, reg);
break ;
default :
return -EINVAL;
}
return 0 ;
}
static int wm8580_set_sysclk(struct snd_soc_dai *dai, int clk_id,
unsigned int freq, int dir)
{
struct snd_soc_component *component = dai->component;
struct wm8580_priv *wm8580 = snd_soc_component_get_drvdata(component);
int ret, sel, sel_mask, sel_shift;
switch (dai->driver->id) {
case WM8580_DAI_PAIFRX:
sel_mask = 0 x3;
sel_shift = 0 ;
break ;
case WM8580_DAI_PAIFTX:
sel_mask = 0 xc;
sel_shift = 2 ;
break ;
default :
WARN(1 , "Unknown DAI driver ID\n" );
return -EINVAL;
}
switch (clk_id) {
case WM8580_CLKSRC_ADCMCLK:
if (dai->driver->id != WM8580_DAI_PAIFTX)
return -EINVAL;
sel = 0 << sel_shift;
break ;
case WM8580_CLKSRC_PLLA:
sel = 1 << sel_shift;
break ;
case WM8580_CLKSRC_PLLB:
sel = 2 << sel_shift;
break ;
case WM8580_CLKSRC_MCLK:
sel = 3 << sel_shift;
break ;
default :
dev_err(component->dev, "Unknown clock %d\n" , clk_id);
return -EINVAL;
}
/* We really should validate PLL settings but not yet */
wm8580->sysclk[dai->driver->id] = freq;
ret = snd_soc_component_update_bits(component, WM8580_CLKSEL, sel_mask, sel);
if (ret < 0 )
return ret;
return 0 ;
}
static int wm8580_mute(struct snd_soc_dai *codec_dai, int mute, int direction)
{
struct snd_soc_component *component = codec_dai->component;
unsigned int reg;
reg = snd_soc_component_read(component, WM8580_DAC_CONTROL5);
if (mute)
reg |= WM8580_DAC_CONTROL5_MUTEALL;
else
reg &= ~WM8580_DAC_CONTROL5_MUTEALL;
snd_soc_component_write(component, WM8580_DAC_CONTROL5, reg);
return 0 ;
}
static int wm8580_set_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level)
{
switch (level) {
case SND_SOC_BIAS_ON:
case SND_SOC_BIAS_PREPARE:
break ;
case SND_SOC_BIAS_STANDBY:
if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
/* Power up and get individual control of the DACs */
snd_soc_component_update_bits(component, WM8580_PWRDN1,
WM8580_PWRDN1_PWDN |
WM8580_PWRDN1_ALLDACPD, 0 );
/* Make VMID high impedance */
snd_soc_component_update_bits(component, WM8580_ADC_CONTROL1,
0 x100, 0 );
}
break ;
case SND_SOC_BIAS_OFF:
snd_soc_component_update_bits(component, WM8580_PWRDN1,
WM8580_PWRDN1_PWDN, WM8580_PWRDN1_PWDN);
break ;
}
return 0 ;
}
static int wm8580_playback_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct wm8580_priv *wm8580 = snd_soc_component_get_drvdata(component);
return snd_pcm_hw_constraint_minmax(substream->runtime,
SNDRV_PCM_HW_PARAM_CHANNELS, 1 , wm8580->drvdata->num_dacs * 2 );
}
#define WM8580_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
static const struct snd_soc_dai_ops wm8580_dai_ops_playback = {
.startup = wm8580_playback_startup,
.set_sysclk = wm8580_set_sysclk,
.hw_params = wm8580_paif_hw_params,
.set_fmt = wm8580_set_paif_dai_fmt,
.set_clkdiv = wm8580_set_dai_clkdiv,
.set_pll = wm8580_set_dai_pll,
.mute_stream = wm8580_mute,
.no_capture_mute = 1 ,
};
static const struct snd_soc_dai_ops wm8580_dai_ops_capture = {
.set_sysclk = wm8580_set_sysclk,
.hw_params = wm8580_paif_hw_params,
.set_fmt = wm8580_set_paif_dai_fmt,
.set_clkdiv = wm8580_set_dai_clkdiv,
.set_pll = wm8580_set_dai_pll,
};
static struct snd_soc_dai_driver wm8580_dai[] = {
{
.name = "wm8580-hifi-playback" ,
.id = WM8580_DAI_PAIFRX,
.playback = {
.stream_name = "Playback" ,
.channels_min = 1 ,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = WM8580_FORMATS,
},
.ops = &wm8580_dai_ops_playback,
},
{
.name = "wm8580-hifi-capture" ,
.id = WM8580_DAI_PAIFTX,
.capture = {
.stream_name = "Capture" ,
.channels_min = 2 ,
.channels_max = 2 ,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = WM8580_FORMATS,
},
.ops = &wm8580_dai_ops_capture,
},
};
static int wm8580_probe(struct snd_soc_component *component)
{
struct wm8580_priv *wm8580 = snd_soc_component_get_drvdata(component);
struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
int ret = 0 ;
switch (wm8580->drvdata->num_dacs) {
case 4 :
snd_soc_add_component_controls(component, wm8581_snd_controls,
ARRAY_SIZE(wm8581_snd_controls));
snd_soc_dapm_new_controls(dapm, wm8581_dapm_widgets,
ARRAY_SIZE(wm8581_dapm_widgets));
snd_soc_dapm_add_routes(dapm, wm8581_dapm_routes,
ARRAY_SIZE(wm8581_dapm_routes));
break ;
default :
break ;
}
ret = regulator_bulk_enable(ARRAY_SIZE(wm8580->supplies),
wm8580->supplies);
if (ret != 0 ) {
dev_err(component->dev, "Failed to enable supplies: %d\n" , ret);
goto err_regulator_get;
}
/* Get the codec into a known state */
ret = snd_soc_component_write(component, WM8580_RESET, 0 );
if (ret != 0 ) {
dev_err(component->dev, "Failed to reset component: %d\n" , ret);
goto err_regulator_enable;
}
return 0 ;
err_regulator_enable:
regulator_bulk_disable(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
err_regulator_get:
return ret;
}
/* power down chip */
static void wm8580_remove(struct snd_soc_component *component)
{
struct wm8580_priv *wm8580 = snd_soc_component_get_drvdata(component);
regulator_bulk_disable(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
}
static const struct snd_soc_component_driver soc_component_dev_wm8580 = {
.probe = wm8580_probe,
.remove = wm8580_remove,
.set_bias_level = wm8580_set_bias_level,
.controls = wm8580_snd_controls,
.num_controls = ARRAY_SIZE(wm8580_snd_controls),
.dapm_widgets = wm8580_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wm8580_dapm_widgets),
.dapm_routes = wm8580_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(wm8580_dapm_routes),
.idle_bias_on = 1 ,
.use_pmdown_time = 1 ,
.endianness = 1 ,
};
static const struct regmap_config wm8580_regmap = {
.reg_bits = 7 ,
.val_bits = 9 ,
.max_register = WM8580_MAX_REGISTER,
.reg_defaults = wm8580_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(wm8580_reg_defaults),
.cache_type = REGCACHE_MAPLE,
.volatile_reg = wm8580_volatile,
};
static const struct wm8580_driver_data wm8580_data = {
.num_dacs = 3 ,
};
static const struct wm8580_driver_data wm8581_data = {
.num_dacs = 4 ,
};
static int wm8580_i2c_probe(struct i2c_client *i2c)
{
struct wm8580_priv *wm8580;
int ret, i;
wm8580 = devm_kzalloc(&i2c->dev, sizeof (struct wm8580_priv),
GFP_KERNEL);
if (wm8580 == NULL)
return -ENOMEM;
wm8580->regmap = devm_regmap_init_i2c(i2c, &wm8580_regmap);
if (IS_ERR(wm8580->regmap))
return PTR_ERR(wm8580->regmap);
for (i = 0 ; i < ARRAY_SIZE(wm8580->supplies); i++)
wm8580->supplies[i].supply = wm8580_supply_names[i];
ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8580->supplies),
wm8580->supplies);
if (ret != 0 ) {
dev_err(&i2c->dev, "Failed to request supplies: %d\n" , ret);
return ret;
}
i2c_set_clientdata(i2c, wm8580);
wm8580->drvdata = i2c_get_match_data(i2c);
if (!wm8580->drvdata)
return dev_err_probe(&i2c->dev, -EINVAL, "failed to find driver data\n" );
ret = devm_snd_soc_register_component(&i2c->dev,
&soc_component_dev_wm8580, wm8580_dai, ARRAY_SIZE(wm8580_dai));
return ret;
}
static const struct of_device_id wm8580_of_match[] = {
{ .compatible = "wlf,wm8580" , .data = &wm8580_data },
{ .compatible = "wlf,wm8581" , .data = &wm8581_data },
{ }
};
MODULE_DEVICE_TABLE(of, wm8580_of_match);
static const struct i2c_device_id wm8580_i2c_id[] = {
{ "wm8580" , (kernel_ulong_t)&wm8580_data },
{ "wm8581" , (kernel_ulong_t)&wm8581_data },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8580_i2c_id);
static struct i2c_driver wm8580_i2c_driver = {
.driver = {
.name = "wm8580" ,
.of_match_table = wm8580_of_match,
},
.probe = wm8580_i2c_probe,
.id_table = wm8580_i2c_id,
};
module_i2c_driver(wm8580_i2c_driver);
MODULE_DESCRIPTION("ASoC WM8580 driver" );
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>" );
MODULE_AUTHOR("Matt Flax <flatmax@flatmax.org>" );
MODULE_LICENSE("GPL" );
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(vorverarbeitet am 2026-06-05)
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