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linux/sound/soc/codecs/wm8580.c
Liam Girdwood ce6120cca2 ASoC: Decouple DAPM from CODECs 
Decoupling Dynamic Audio Power Management (DAPM) from codec devices is
required when developing ASoC further. Such as for other ASoC components to
have DAPM widgets or when extending DAPM to handle cross-device paths.

This patch decouples DAPM related variables from struct snd_soc_codec and
moves them to new struct snd_soc_dapm_context that is used to encapsulate
DAPM context of a device. ASoC core and API of DAPM functions are modified
to use DAPM context instead of codec.

This patch does not change current functionality and a large part of changes
come because of structure and internal API changes.

Core implementation is from Liam Girdwood <lrg@slimlogic.co.uk> with some
minor core changes, codecs and machine driver conversions from
Jarkko Nikula <jhnikula@gmail.com>.

Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Manuel Lauss <manuel.lauss@googlemail.com>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Cc: Cliff Cai <cliff.cai@analog.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Ryan Mallon <ryan@bluewatersys.com>
Cc: Timur Tabi <timur@freescale.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Arnaud Patard (Rtp) <arnaud.patard@rtp-net.org>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Jassi Brar <jassi.brar@samsung.com>
Cc: Daniel Gloeckner <dg@emlix.com>
Cc: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-06 11:28:29 -04:00

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/*
* wm8580.c -- WM8580 ALSA Soc Audio driver
*
* Copyright 2008, 2009 Wolfson Microelectronics PLC.
*
* 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.
*
* Notes:
* The WM8580 is a multichannel codec with S/PDIF support, featuring six
* 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/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/platform_device.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/soc-dapm.h>
#include <sound/tlv.h>
#include <sound/initval.h>
#include <asm/div64.h>
#include "wm8580.h"
/* WM8580 register space */
#define WM8580_PLLA1 0x00
#define WM8580_PLLA2 0x01
#define WM8580_PLLA3 0x02
#define WM8580_PLLA4 0x03
#define WM8580_PLLB1 0x04
#define WM8580_PLLB2 0x05
#define WM8580_PLLB3 0x06
#define WM8580_PLLB4 0x07
#define WM8580_CLKSEL 0x08
#define WM8580_PAIF1 0x09
#define WM8580_PAIF2 0x0A
#define WM8580_SAIF1 0x0B
#define WM8580_PAIF3 0x0C
#define WM8580_PAIF4 0x0D
#define WM8580_SAIF2 0x0E
#define WM8580_DAC_CONTROL1 0x0F
#define WM8580_DAC_CONTROL2 0x10
#define WM8580_DAC_CONTROL3 0x11
#define WM8580_DAC_CONTROL4 0x12
#define WM8580_DAC_CONTROL5 0x13
#define WM8580_DIGITAL_ATTENUATION_DACL1 0x14
#define WM8580_DIGITAL_ATTENUATION_DACR1 0x15
#define WM8580_DIGITAL_ATTENUATION_DACL2 0x16
#define WM8580_DIGITAL_ATTENUATION_DACR2 0x17
#define WM8580_DIGITAL_ATTENUATION_DACL3 0x18
#define WM8580_DIGITAL_ATTENUATION_DACR3 0x19
#define WM8580_MASTER_DIGITAL_ATTENUATION 0x1C
#define WM8580_ADC_CONTROL1 0x1D
#define WM8580_SPDTXCHAN0 0x1E
#define WM8580_SPDTXCHAN1 0x1F
#define WM8580_SPDTXCHAN2 0x20
#define WM8580_SPDTXCHAN3 0x21
#define WM8580_SPDTXCHAN4 0x22
#define WM8580_SPDTXCHAN5 0x23
#define WM8580_SPDMODE 0x24
#define WM8580_INTMASK 0x25
#define WM8580_GPO1 0x26
#define WM8580_GPO2 0x27
#define WM8580_GPO3 0x28
#define WM8580_GPO4 0x29
#define WM8580_GPO5 0x2A
#define WM8580_INTSTAT 0x2B
#define WM8580_SPDRXCHAN1 0x2C
#define WM8580_SPDRXCHAN2 0x2D
#define WM8580_SPDRXCHAN3 0x2E
#define WM8580_SPDRXCHAN4 0x2F
#define WM8580_SPDRXCHAN5 0x30
#define WM8580_SPDSTAT 0x31
#define WM8580_PWRDN1 0x32
#define WM8580_PWRDN2 0x33
#define WM8580_READBACK 0x34
#define WM8580_RESET 0x35
#define WM8580_MAX_REGISTER 0x35
#define WM8580_DACOSR 0x40
/* PLLB4 (register 7h) */
#define WM8580_PLLB4_MCLKOUTSRC_MASK 0x60
#define WM8580_PLLB4_MCLKOUTSRC_PLLA 0x20
#define WM8580_PLLB4_MCLKOUTSRC_PLLB 0x40
#define WM8580_PLLB4_MCLKOUTSRC_OSC 0x60
#define WM8580_PLLB4_CLKOUTSRC_MASK 0x180
#define WM8580_PLLB4_CLKOUTSRC_PLLACLK 0x080
#define WM8580_PLLB4_CLKOUTSRC_PLLBCLK 0x100
#define WM8580_PLLB4_CLKOUTSRC_OSCCLK 0x180
/* CLKSEL (register 8h) */
#define WM8580_CLKSEL_DAC_CLKSEL_MASK 0x03
#define WM8580_CLKSEL_DAC_CLKSEL_PLLA 0x01
#define WM8580_CLKSEL_DAC_CLKSEL_PLLB 0x02
/* AIF control 1 (registers 9h-bh) */
#define WM8580_AIF_RATE_MASK 0x7
#define WM8580_AIF_BCLKSEL_MASK 0x18
#define WM8580_AIF_MS 0x20
#define WM8580_AIF_CLKSRC_MASK 0xc0
#define WM8580_AIF_CLKSRC_PLLA 0x40
#define WM8580_AIF_CLKSRC_PLLB 0x40
#define WM8580_AIF_CLKSRC_MCLK 0xc0
/* AIF control 2 (registers ch-eh) */
#define WM8580_AIF_FMT_MASK 0x03
#define WM8580_AIF_FMT_RIGHTJ 0x00
#define WM8580_AIF_FMT_LEFTJ 0x01
#define WM8580_AIF_FMT_I2S 0x02
#define WM8580_AIF_FMT_DSP 0x03
#define WM8580_AIF_LENGTH_MASK 0x0c
#define WM8580_AIF_LENGTH_16 0x00
#define WM8580_AIF_LENGTH_20 0x04
#define WM8580_AIF_LENGTH_24 0x08
#define WM8580_AIF_LENGTH_32 0x0c
#define WM8580_AIF_LRP 0x10
#define WM8580_AIF_BCP 0x20
/* Powerdown Register 1 (register 32h) */
#define WM8580_PWRDN1_PWDN 0x001
#define WM8580_PWRDN1_ALLDACPD 0x040
/* Powerdown Register 2 (register 33h) */
#define WM8580_PWRDN2_OSSCPD 0x001
#define WM8580_PWRDN2_PLLAPD 0x002
#define WM8580_PWRDN2_PLLBPD 0x004
#define WM8580_PWRDN2_SPDIFPD 0x008
#define WM8580_PWRDN2_SPDIFTXD 0x010
#define WM8580_PWRDN2_SPDIFRXD 0x020
#define WM8580_DAC_CONTROL5_MUTEALL 0x10
/*
* 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 u16 wm8580_reg[] = {
0x0121, 0x017e, 0x007d, 0x0014, /*R3*/
0x0121, 0x017e, 0x007d, 0x0194, /*R7*/
0x001c, 0x0002, 0x0002, 0x00c2, /*R11*/
0x0182, 0x0082, 0x000a, 0x0024, /*R15*/
0x0009, 0x0000, 0x00ff, 0x0000, /*R19*/
0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R23*/
0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R27*/
0x01f0, 0x0040, 0x0000, 0x0000, /*R31(0x1F)*/
0x0000, 0x0000, 0x0031, 0x000b, /*R35*/
0x0039, 0x0000, 0x0010, 0x0032, /*R39*/
0x0054, 0x0076, 0x0098, 0x0000, /*R43(0x2B)*/
0x0000, 0x0000, 0x0000, 0x0000, /*R47*/
0x0000, 0x0000, 0x005e, 0x003e, /*R51(0x33)*/
0x0000, 0x0000 /*R53*/
};
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",
};
/* codec private data */
struct wm8580_priv {
enum snd_soc_control_type control_type;
struct regulator_bulk_data supplies[WM8580_NUM_SUPPLIES];
u16 reg_cache[WM8580_MAX_REGISTER + 1];
struct pll_state a;
struct pll_state b;
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_codec *codec = snd_kcontrol_chip(kcontrol);
u16 *reg_cache = codec->reg_cache;
unsigned int reg = mc->reg;
unsigned int reg2 = mc->rreg;
int ret;
/* Clear the register cache so we write without VU set */
reg_cache[reg] = 0;
reg_cache[reg2] = 0;
ret = snd_soc_put_volsw_2r(kcontrol, ucontrol);
if (ret < 0)
return ret;
/* Now write again with the volume update bit set */
snd_soc_update_bits(codec, reg, 0x100, 0x100);
snd_soc_update_bits(codec, reg2, 0x100, 0x100);
return 0;
}
#define SOC_WM8580_OUT_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, \
xinvert, tlv_array) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
SNDRV_CTL_ELEM_ACCESS_READWRITE, \
.tlv.p = (tlv_array), \
.info = snd_soc_info_volsw_2r, \
.get = snd_soc_get_volsw_2r, .put = wm8580_out_vu, \
.private_value = (unsigned long)&(struct soc_mixer_control) \
{.reg = reg_left, .rreg = reg_right, .shift = xshift, \
.max = xmax, .invert = xinvert} }
static const struct snd_kcontrol_new wm8580_snd_controls[] = {
SOC_WM8580_OUT_DOUBLE_R_TLV("DAC1 Playback Volume",
WM8580_DIGITAL_ATTENUATION_DACL1,
WM8580_DIGITAL_ATTENUATION_DACR1,
0, 0xff, 0, dac_tlv),
SOC_WM8580_OUT_DOUBLE_R_TLV("DAC2 Playback Volume",
WM8580_DIGITAL_ATTENUATION_DACL2,
WM8580_DIGITAL_ATTENUATION_DACR2,
0, 0xff, 0, dac_tlv),
SOC_WM8580_OUT_DOUBLE_R_TLV("DAC3 Playback Volume",
WM8580_DIGITAL_ATTENUATION_DACL3,
WM8580_DIGITAL_ATTENUATION_DACR3,
0, 0xff, 0, 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_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_route audio_map[] = {
{ "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 int wm8580_add_widgets(struct snd_soc_codec *codec)
{
struct snd_soc_dapm_context *dapm = &codec->dapm;
snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets,
ARRAY_SIZE(wm8580_dapm_widgets));
snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
return 0;
}
/* 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 & 0xFFFFFFFF;
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_codec *codec = codec_dai->codec;
struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
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.
*/
reg = snd_soc_read(codec, WM8580_PWRDN2);
snd_soc_write(codec, WM8580_PWRDN2, reg | pwr_mask);
if (!freq_in || !freq_out)
return 0;
snd_soc_write(codec, WM8580_PLLA1 + offset, pll_div.k & 0x1ff);
snd_soc_write(codec, WM8580_PLLA2 + offset, (pll_div.k >> 9) & 0x1ff);
snd_soc_write(codec, WM8580_PLLA3 + offset,
(pll_div.k >> 18 & 0xf) | (pll_div.n << 4));
reg = snd_soc_read(codec, WM8580_PLLA4 + offset);
reg &= ~0x1b;
reg |= pll_div.prescale | pll_div.postscale << 1 |
pll_div.freqmode << 3;
snd_soc_write(codec, WM8580_PLLA4 + offset, reg);
/* All done, turn it on */
reg = snd_soc_read(codec, WM8580_PWRDN2);
snd_soc_write(codec, WM8580_PWRDN2, reg & ~pwr_mask);
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_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec *codec = rtd->codec;
struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
u16 paifa = 0;
u16 paifb = 0;
int i, ratio, osr;
/* bit size */
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
paifa |= 0x8;
break;
case SNDRV_PCM_FORMAT_S20_3LE:
paifa |= 0x10;
paifb |= WM8580_AIF_LENGTH_20;
break;
case SNDRV_PCM_FORMAT_S24_LE:
paifa |= 0x10;
paifb |= WM8580_AIF_LENGTH_24;
break;
case SNDRV_PCM_FORMAT_S32_LE:
paifa |= 0x10;
paifb |= WM8580_AIF_LENGTH_24;
break;
default:
return -EINVAL;
}
/* Look up the SYSCLK ratio; accept only exact matches */
ratio = wm8580->sysclk[dai->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(codec->dev, "Invalid clock ratio %d/%d\n",
wm8580->sysclk[dai->id], params_rate(params));
return -EINVAL;
}
paifa |= i;
dev_dbg(codec->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(codec->dev, "Selecting 64x OSR\n");
break;
default:
osr = 0;
dev_dbg(codec->dev, "Selecting 128x OSR\n");
break;
}
snd_soc_update_bits(codec, WM8580_PAIF3, WM8580_DACOSR, osr);
}
snd_soc_update_bits(codec, WM8580_PAIF1 + dai->driver->id,
WM8580_AIF_RATE_MASK | WM8580_AIF_BCLKSEL_MASK,
paifa);
snd_soc_update_bits(codec, 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_codec *codec = codec_dai->codec;
unsigned int aifa;
unsigned int aifb;
int can_invert_lrclk;
aifa = snd_soc_read(codec, WM8580_PAIF1 + codec_dai->driver->id);
aifb = snd_soc_read(codec, 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_CBS_CFS:
aifa &= ~WM8580_AIF_MS;
break;
case SND_SOC_DAIFMT_CBM_CFM:
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_write(codec, WM8580_PAIF1 + codec_dai->driver->id, aifa);
snd_soc_write(codec, 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_codec *codec = codec_dai->codec;
unsigned int reg;
switch (div_id) {
case WM8580_MCLK:
reg = snd_soc_read(codec, 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_write(codec, WM8580_PLLB4, reg);
break;
case WM8580_CLKOUTSRC:
reg = snd_soc_read(codec, 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_write(codec, 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_codec *codec = dai->codec;
struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
int sel, sel_mask, sel_shift;
switch (dai->driver->id) {
case WM8580_DAI_PAIFRX:
sel_mask = 0x3;
sel_shift = 0;
break;
case WM8580_DAI_PAIFTX:
sel_mask = 0xc;
sel_shift = 2;
break;
default:
BUG_ON("Unknown DAI driver ID\n");
return -EINVAL;
}
switch (clk_id) {
case WM8580_CLKSRC_ADCMCLK:
if (dai->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(codec->dev, "Unknown clock %d\n", clk_id);
return -EINVAL;
}
/* We really should validate PLL settings but not yet */
wm8580->sysclk[dai->id] = freq;
return snd_soc_update_bits(codec, WM8580_CLKSEL, sel_mask, sel);
}
static int wm8580_digital_mute(struct snd_soc_dai *codec_dai, int mute)
{
struct snd_soc_codec *codec = codec_dai->codec;
unsigned int reg;
reg = snd_soc_read(codec, WM8580_DAC_CONTROL5);
if (mute)
reg |= WM8580_DAC_CONTROL5_MUTEALL;
else
reg &= ~WM8580_DAC_CONTROL5_MUTEALL;
snd_soc_write(codec, WM8580_DAC_CONTROL5, reg);
return 0;
}
static int wm8580_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
u16 reg;
switch (level) {
case SND_SOC_BIAS_ON:
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
/* Power up and get individual control of the DACs */
reg = snd_soc_read(codec, WM8580_PWRDN1);
reg &= ~(WM8580_PWRDN1_PWDN | WM8580_PWRDN1_ALLDACPD);
snd_soc_write(codec, WM8580_PWRDN1, reg);
/* Make VMID high impedence */
reg = snd_soc_read(codec, WM8580_ADC_CONTROL1);
reg &= ~0x100;
snd_soc_write(codec, WM8580_ADC_CONTROL1, reg);
}
break;
case SND_SOC_BIAS_OFF:
reg = snd_soc_read(codec, WM8580_PWRDN1);
snd_soc_write(codec, WM8580_PWRDN1, reg | WM8580_PWRDN1_PWDN);
break;
}
codec->dapm.bias_level = level;
return 0;
}
#define WM8580_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
static struct snd_soc_dai_ops wm8580_dai_ops_playback = {
.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,
.digital_mute = wm8580_digital_mute,
};
static 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,
.channels_max = 6,
.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_codec *codec)
{
struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
int ret = 0,i;
ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8580->control_type);
if (ret < 0) {
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
return ret;
}
for (i = 0; i < ARRAY_SIZE(wm8580->supplies); i++)
wm8580->supplies[i].supply = wm8580_supply_names[i];
ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8580->supplies),
wm8580->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
return ret;
}
ret = regulator_bulk_enable(ARRAY_SIZE(wm8580->supplies),
wm8580->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
goto err_regulator_get;
}
/* Get the codec into a known state */
ret = snd_soc_write(codec, WM8580_RESET, 0);
if (ret != 0) {
dev_err(codec->dev, "Failed to reset codec: %d\n", ret);
goto err_regulator_enable;
}
wm8580_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
snd_soc_add_controls(codec, wm8580_snd_controls,
ARRAY_SIZE(wm8580_snd_controls));
wm8580_add_widgets(codec);
return 0;
err_regulator_enable:
regulator_bulk_disable(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
err_regulator_get:
regulator_bulk_free(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
return ret;
}
/* power down chip */
static int wm8580_remove(struct snd_soc_codec *codec)
{
struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
wm8580_set_bias_level(codec, SND_SOC_BIAS_OFF);
regulator_bulk_disable(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
regulator_bulk_free(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
return 0;
}
static struct snd_soc_codec_driver soc_codec_dev_wm8580 = {
.probe = wm8580_probe,
.remove = wm8580_remove,
.set_bias_level = wm8580_set_bias_level,
.reg_cache_size = ARRAY_SIZE(wm8580_reg),
.reg_word_size = sizeof(u16),
.reg_cache_default = &wm8580_reg,
};
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static int wm8580_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8580_priv *wm8580;
int ret;
wm8580 = kzalloc(sizeof(struct wm8580_priv), GFP_KERNEL);
if (wm8580 == NULL)
return -ENOMEM;
i2c_set_clientdata(i2c, wm8580);
wm8580->control_type = SND_SOC_I2C;
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8580, wm8580_dai, ARRAY_SIZE(wm8580_dai));
if (ret < 0)
kfree(wm8580);
return ret;
}
static int wm8580_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
kfree(i2c_get_clientdata(client));
return 0;
}
static const struct i2c_device_id wm8580_i2c_id[] = {
{ "wm8580", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8580_i2c_id);
static struct i2c_driver wm8580_i2c_driver = {
.driver = {
.name = "wm8580-codec",
.owner = THIS_MODULE,
},
.probe = wm8580_i2c_probe,
.remove = wm8580_i2c_remove,
.id_table = wm8580_i2c_id,
};
#endif
static int __init wm8580_modinit(void)
{
int ret = 0;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
ret = i2c_add_driver(&wm8580_i2c_driver);
if (ret != 0) {
pr_err("Failed to register WM8580 I2C driver: %d\n", ret);
}
#endif
return ret;
}
module_init(wm8580_modinit);
static void __exit wm8580_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
i2c_del_driver(&wm8580_i2c_driver);
#endif
}
module_exit(wm8580_exit);
MODULE_DESCRIPTION("ASoC WM8580 driver");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
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