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yaml
---
r: 248197
b: refs/heads/master
c: f701a2e
h: refs/heads/master
i:
  248195: afb9b09
v: v3
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Mark Brown committed Mar 18, 2011
1 parent 27d1271 commit 533c275
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Showing 5 changed files with 365 additions and 304 deletions.
2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 780e2806986f9cc980808687da95160c65baa78a
refs/heads/master: f701a2e594e62b35d895ad5ec1db8d2d0714c158
2 changes: 1 addition & 1 deletion trunk/sound/soc/codecs/Makefile
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Expand Up @@ -69,7 +69,7 @@ snd-soc-wm8988-objs := wm8988.o
snd-soc-wm8990-objs := wm8990.o
snd-soc-wm8991-objs := wm8991.o
snd-soc-wm8993-objs := wm8993.o
snd-soc-wm8994-objs := wm8994.o wm8994-tables.o
snd-soc-wm8994-objs := wm8994.o wm8994-tables.o wm8958-dsp2.o
snd-soc-wm8995-objs := wm8995.o
snd-soc-wm9081-objs := wm9081.o
snd-soc-wm9705-objs := wm9705.o
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289 changes: 289 additions & 0 deletions trunk/sound/soc/codecs/wm8958-dsp2.c
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/*
* wm8958-dsp2.c -- WM8958 DSP2 support
*
* Copyright 2011 Wolfson Microelectronics plc
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <trace/events/asoc.h>

#include <linux/mfd/wm8994/core.h>
#include <linux/mfd/wm8994/registers.h>
#include <linux/mfd/wm8994/pdata.h>
#include <linux/mfd/wm8994/gpio.h>

#include "wm8994.h"

static void wm8958_mbc_apply(struct snd_soc_codec *codec, int mbc, int start)
{
struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
struct wm8994_pdata *pdata = wm8994->pdata;
int pwr_reg = snd_soc_read(codec, WM8994_POWER_MANAGEMENT_5);
int ena, reg, aif, i;

switch (mbc) {
case 0:
pwr_reg &= (WM8994_AIF1DAC1L_ENA | WM8994_AIF1DAC1R_ENA);
aif = 0;
break;
case 1:
pwr_reg &= (WM8994_AIF1DAC2L_ENA | WM8994_AIF1DAC2R_ENA);
aif = 0;
break;
case 2:
pwr_reg &= (WM8994_AIF2DACL_ENA | WM8994_AIF2DACR_ENA);
aif = 1;
break;
default:
BUG();
return;
}

/* We can only enable the MBC if the AIF is enabled and we
* want it to be enabled. */
ena = pwr_reg && wm8994->mbc_ena[mbc];

reg = snd_soc_read(codec, WM8958_DSP2_PROGRAM);

dev_dbg(codec->dev, "MBC %d startup: %d, power: %x, DSP: %x\n",
mbc, start, pwr_reg, reg);

if (start && ena) {
/* If the DSP is already running then noop */
if (reg & WM8958_DSP2_ENA)
return;

/* Switch the clock over to the appropriate AIF */
snd_soc_update_bits(codec, WM8994_CLOCKING_1,
WM8958_DSP2CLK_SRC | WM8958_DSP2CLK_ENA,
aif << WM8958_DSP2CLK_SRC_SHIFT |
WM8958_DSP2CLK_ENA);

snd_soc_update_bits(codec, WM8958_DSP2_PROGRAM,
WM8958_DSP2_ENA, WM8958_DSP2_ENA);

/* If we've got user supplied MBC settings use them */
if (pdata && pdata->num_mbc_cfgs) {
struct wm8958_mbc_cfg *cfg
= &pdata->mbc_cfgs[wm8994->mbc_cfg];

for (i = 0; i < ARRAY_SIZE(cfg->coeff_regs); i++)
snd_soc_write(codec, i + WM8958_MBC_BAND_1_K_1,
cfg->coeff_regs[i]);

for (i = 0; i < ARRAY_SIZE(cfg->cutoff_regs); i++)
snd_soc_write(codec,
i + WM8958_MBC_BAND_2_LOWER_CUTOFF_C1_1,
cfg->cutoff_regs[i]);
}

/* Run the DSP */
snd_soc_write(codec, WM8958_DSP2_EXECCONTROL,
WM8958_DSP2_RUNR);

/* And we're off! */
snd_soc_update_bits(codec, WM8958_DSP2_CONFIG,
WM8958_MBC_ENA | WM8958_MBC_SEL_MASK,
mbc << WM8958_MBC_SEL_SHIFT |
WM8958_MBC_ENA);
} else {
/* If the DSP is already stopped then noop */
if (!(reg & WM8958_DSP2_ENA))
return;

snd_soc_update_bits(codec, WM8958_DSP2_CONFIG,
WM8958_MBC_ENA, 0);
snd_soc_update_bits(codec, WM8958_DSP2_PROGRAM,
WM8958_DSP2_ENA, 0);
snd_soc_update_bits(codec, WM8994_CLOCKING_1,
WM8958_DSP2CLK_ENA, 0);
}
}

int wm8958_aif_ev(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = w->codec;
int mbc;

switch (w->shift) {
case 13:
case 12:
mbc = 2;
break;
case 11:
case 10:
mbc = 1;
break;
case 9:
case 8:
mbc = 0;
break;
default:
BUG();
return -EINVAL;
}

switch (event) {
case SND_SOC_DAPM_POST_PMU:
wm8958_mbc_apply(codec, mbc, 1);
break;
case SND_SOC_DAPM_POST_PMD:
wm8958_mbc_apply(codec, mbc, 0);
break;
}

return 0;
}

static int wm8958_put_mbc_enum(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
struct wm8994_pdata *pdata = wm8994->pdata;
int value = ucontrol->value.integer.value[0];
int reg;

/* Don't allow on the fly reconfiguration */
reg = snd_soc_read(codec, WM8994_CLOCKING_1);
if (reg < 0 || reg & WM8958_DSP2CLK_ENA)
return -EBUSY;

if (value >= pdata->num_mbc_cfgs)
return -EINVAL;

wm8994->mbc_cfg = value;

return 0;
}

static int wm8958_get_mbc_enum(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);

ucontrol->value.enumerated.item[0] = wm8994->mbc_cfg;

return 0;
}

static int wm8958_mbc_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
uinfo->count = 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = 1;
return 0;
}

static int wm8958_mbc_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
int mbc = kcontrol->private_value;
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);

ucontrol->value.integer.value[0] = wm8994->mbc_ena[mbc];

return 0;
}

static int wm8958_mbc_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
int mbc = kcontrol->private_value;
int i;
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);

if (ucontrol->value.integer.value[0] > 1)
return -EINVAL;

for (i = 0; i < ARRAY_SIZE(wm8994->mbc_ena); i++) {
if (mbc != i && wm8994->mbc_ena[i]) {
dev_dbg(codec->dev, "MBC %d active already\n", mbc);
return -EBUSY;
}
}

wm8994->mbc_ena[mbc] = ucontrol->value.integer.value[0];

wm8958_mbc_apply(codec, mbc, wm8994->mbc_ena[mbc]);

return 0;
}

#define WM8958_MBC_SWITCH(xname, xval) {\
.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,\
.info = wm8958_mbc_info, \
.get = wm8958_mbc_get, .put = wm8958_mbc_put, \
.private_value = xval }

static const struct snd_kcontrol_new wm8958_mbc_snd_controls[] = {
WM8958_MBC_SWITCH("AIF1DAC1 MBC Switch", 0),
WM8958_MBC_SWITCH("AIF1DAC2 MBC Switch", 1),
WM8958_MBC_SWITCH("AIF2DAC MBC Switch", 2),
};

void wm8958_dsp2_init(struct snd_soc_codec *codec)
{
struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
struct wm8994_pdata *pdata = wm8994->pdata;
int ret, i;

snd_soc_add_controls(codec, wm8958_mbc_snd_controls,
ARRAY_SIZE(wm8958_mbc_snd_controls));

if (!pdata)
return;

if (pdata->num_mbc_cfgs) {
struct snd_kcontrol_new control[] = {
SOC_ENUM_EXT("MBC Mode", wm8994->mbc_enum,
wm8958_get_mbc_enum, wm8958_put_mbc_enum),
};

/* We need an array of texts for the enum API */
wm8994->mbc_texts = kmalloc(sizeof(char *)
* pdata->num_mbc_cfgs, GFP_KERNEL);
if (!wm8994->mbc_texts) {
dev_err(wm8994->codec->dev,
"Failed to allocate %d MBC config texts\n",
pdata->num_mbc_cfgs);
return;
}

for (i = 0; i < pdata->num_mbc_cfgs; i++)
wm8994->mbc_texts[i] = pdata->mbc_cfgs[i].name;

wm8994->mbc_enum.max = pdata->num_mbc_cfgs;
wm8994->mbc_enum.texts = wm8994->mbc_texts;

ret = snd_soc_add_controls(wm8994->codec, control, 1);
if (ret != 0)
dev_err(wm8994->codec->dev,
"Failed to add MBC mode controls: %d\n", ret);
}


}
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