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linux/sound/soc/codecs/twl6040.c
Axel Lin 19aab08d69 ASoC: twl6040: Return -ENOMEM if create_singlethread_workqueue fails 
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-03-26 15:36:56 +00:00

1790 lines
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/*
* ALSA SoC TWL6040 codec driver
*
* Author: Misael Lopez Cruz <x0052729@ti.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.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#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/gpio.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/i2c/twl.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include "twl6040.h"
#define TWL6040_RATES SNDRV_PCM_RATE_8000_96000
#define TWL6040_FORMATS (SNDRV_PCM_FMTBIT_S32_LE)
#define TWL6040_OUTHS_0dB 0x00
#define TWL6040_OUTHS_M30dB 0x0F
#define TWL6040_OUTHF_0dB 0x03
#define TWL6040_OUTHF_M52dB 0x1D
#define TWL6040_RAMP_NONE 0
#define TWL6040_RAMP_UP 1
#define TWL6040_RAMP_DOWN 2
#define TWL6040_HSL_VOL_MASK 0x0F
#define TWL6040_HSL_VOL_SHIFT 0
#define TWL6040_HSR_VOL_MASK 0xF0
#define TWL6040_HSR_VOL_SHIFT 4
#define TWL6040_HF_VOL_MASK 0x1F
#define TWL6040_HF_VOL_SHIFT 0
struct twl6040_output {
u16 active;
u16 left_vol;
u16 right_vol;
u16 left_step;
u16 right_step;
unsigned int step_delay;
u16 ramp;
u16 mute;
struct completion ramp_done;
};
struct twl6040_jack_data {
struct snd_soc_jack *jack;
int report;
};
/* codec private data */
struct twl6040_data {
int audpwron;
int naudint;
int codec_powered;
int pll;
int non_lp;
unsigned int sysclk;
struct snd_pcm_hw_constraint_list *sysclk_constraints;
struct completion ready;
struct twl6040_jack_data hs_jack;
struct snd_soc_codec *codec;
struct workqueue_struct *workqueue;
struct delayed_work delayed_work;
struct mutex mutex;
struct twl6040_output headset;
struct twl6040_output handsfree;
struct workqueue_struct *hf_workqueue;
struct workqueue_struct *hs_workqueue;
struct delayed_work hs_delayed_work;
struct delayed_work hf_delayed_work;
};
/*
* twl6040 register cache & default register settings
*/
static const u8 twl6040_reg[TWL6040_CACHEREGNUM] = {
0x00, /* not used 0x00 */
0x4B, /* TWL6040_ASICID (ro) 0x01 */
0x00, /* TWL6040_ASICREV (ro) 0x02 */
0x00, /* TWL6040_INTID 0x03 */
0x00, /* TWL6040_INTMR 0x04 */
0x00, /* TWL6040_NCPCTRL 0x05 */
0x00, /* TWL6040_LDOCTL 0x06 */
0x60, /* TWL6040_HPPLLCTL 0x07 */
0x00, /* TWL6040_LPPLLCTL 0x08 */
0x4A, /* TWL6040_LPPLLDIV 0x09 */
0x00, /* TWL6040_AMICBCTL 0x0A */
0x00, /* TWL6040_DMICBCTL 0x0B */
0x18, /* TWL6040_MICLCTL 0x0C - No input selected on Left Mic */
0x18, /* TWL6040_MICRCTL 0x0D - No input selected on Right Mic */
0x00, /* TWL6040_MICGAIN 0x0E */
0x1B, /* TWL6040_LINEGAIN 0x0F */
0x00, /* TWL6040_HSLCTL 0x10 */
0x00, /* TWL6040_HSRCTL 0x11 */
0x00, /* TWL6040_HSGAIN 0x12 */
0x00, /* TWL6040_EARCTL 0x13 */
0x00, /* TWL6040_HFLCTL 0x14 */
0x00, /* TWL6040_HFLGAIN 0x15 */
0x00, /* TWL6040_HFRCTL 0x16 */
0x00, /* TWL6040_HFRGAIN 0x17 */
0x00, /* TWL6040_VIBCTLL 0x18 */
0x00, /* TWL6040_VIBDATL 0x19 */
0x00, /* TWL6040_VIBCTLR 0x1A */
0x00, /* TWL6040_VIBDATR 0x1B */
0x00, /* TWL6040_HKCTL1 0x1C */
0x00, /* TWL6040_HKCTL2 0x1D */
0x00, /* TWL6040_GPOCTL 0x1E */
0x00, /* TWL6040_ALB 0x1F */
0x00, /* TWL6040_DLB 0x20 */
0x00, /* not used 0x21 */
0x00, /* not used 0x22 */
0x00, /* not used 0x23 */
0x00, /* not used 0x24 */
0x00, /* not used 0x25 */
0x00, /* not used 0x26 */
0x00, /* not used 0x27 */
0x00, /* TWL6040_TRIM1 0x28 */
0x00, /* TWL6040_TRIM2 0x29 */
0x00, /* TWL6040_TRIM3 0x2A */
0x00, /* TWL6040_HSOTRIM 0x2B */
0x00, /* TWL6040_HFOTRIM 0x2C */
0x09, /* TWL6040_ACCCTL 0x2D */
0x00, /* TWL6040_STATUS (ro) 0x2E */
};
/*
* twl6040 vio/gnd registers:
* registers under vio/gnd supply can be accessed
* before the power-up sequence, after NRESPWRON goes high
*/
static const int twl6040_vio_reg[TWL6040_VIOREGNUM] = {
TWL6040_REG_ASICID,
TWL6040_REG_ASICREV,
TWL6040_REG_INTID,
TWL6040_REG_INTMR,
TWL6040_REG_NCPCTL,
TWL6040_REG_LDOCTL,
TWL6040_REG_AMICBCTL,
TWL6040_REG_DMICBCTL,
TWL6040_REG_HKCTL1,
TWL6040_REG_HKCTL2,
TWL6040_REG_GPOCTL,
TWL6040_REG_TRIM1,
TWL6040_REG_TRIM2,
TWL6040_REG_TRIM3,
TWL6040_REG_HSOTRIM,
TWL6040_REG_HFOTRIM,
TWL6040_REG_ACCCTL,
TWL6040_REG_STATUS,
};
/*
* twl6040 vdd/vss registers:
* registers under vdd/vss supplies can only be accessed
* after the power-up sequence
*/
static const int twl6040_vdd_reg[TWL6040_VDDREGNUM] = {
TWL6040_REG_HPPLLCTL,
TWL6040_REG_LPPLLCTL,
TWL6040_REG_LPPLLDIV,
TWL6040_REG_MICLCTL,
TWL6040_REG_MICRCTL,
TWL6040_REG_MICGAIN,
TWL6040_REG_LINEGAIN,
TWL6040_REG_HSLCTL,
TWL6040_REG_HSRCTL,
TWL6040_REG_HSGAIN,
TWL6040_REG_EARCTL,
TWL6040_REG_HFLCTL,
TWL6040_REG_HFLGAIN,
TWL6040_REG_HFRCTL,
TWL6040_REG_HFRGAIN,
TWL6040_REG_VIBCTLL,
TWL6040_REG_VIBDATL,
TWL6040_REG_VIBCTLR,
TWL6040_REG_VIBDATR,
TWL6040_REG_ALB,
TWL6040_REG_DLB,
};
/*
* read twl6040 register cache
*/
static inline unsigned int twl6040_read_reg_cache(struct snd_soc_codec *codec,
unsigned int reg)
{
u8 *cache = codec->reg_cache;
if (reg >= TWL6040_CACHEREGNUM)
return -EIO;
return cache[reg];
}
/*
* write twl6040 register cache
*/
static inline void twl6040_write_reg_cache(struct snd_soc_codec *codec,
u8 reg, u8 value)
{
u8 *cache = codec->reg_cache;
if (reg >= TWL6040_CACHEREGNUM)
return;
cache[reg] = value;
}
/*
* read from twl6040 hardware register
*/
static int twl6040_read_reg_volatile(struct snd_soc_codec *codec,
unsigned int reg)
{
u8 value;
if (reg >= TWL6040_CACHEREGNUM)
return -EIO;
twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &value, reg);
twl6040_write_reg_cache(codec, reg, value);
return value;
}
/*
* write to the twl6040 register space
*/
static int twl6040_write(struct snd_soc_codec *codec,
unsigned int reg, unsigned int value)
{
if (reg >= TWL6040_CACHEREGNUM)
return -EIO;
twl6040_write_reg_cache(codec, reg, value);
return twl_i2c_write_u8(TWL_MODULE_AUDIO_VOICE, value, reg);
}
static void twl6040_init_vio_regs(struct snd_soc_codec *codec)
{
u8 *cache = codec->reg_cache;
int reg, i;
/* allow registers to be accessed by i2c */
twl6040_write(codec, TWL6040_REG_ACCCTL, cache[TWL6040_REG_ACCCTL]);
for (i = 0; i < TWL6040_VIOREGNUM; i++) {
reg = twl6040_vio_reg[i];
/* skip read-only registers (ASICID, ASICREV, STATUS) */
switch (reg) {
case TWL6040_REG_ASICID:
case TWL6040_REG_ASICREV:
case TWL6040_REG_STATUS:
continue;
default:
break;
}
twl6040_write(codec, reg, cache[reg]);
}
}
static void twl6040_init_vdd_regs(struct snd_soc_codec *codec)
{
u8 *cache = codec->reg_cache;
int reg, i;
for (i = 0; i < TWL6040_VDDREGNUM; i++) {
reg = twl6040_vdd_reg[i];
twl6040_write(codec, reg, cache[reg]);
}
}
/*
* Ramp HS PGA volume to minimise pops at stream startup and shutdown.
*/
static inline int twl6040_hs_ramp_step(struct snd_soc_codec *codec,
unsigned int left_step, unsigned int right_step)
{
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
struct twl6040_output *headset = &priv->headset;
int left_complete = 0, right_complete = 0;
u8 reg, val;
/* left channel */
left_step = (left_step > 0xF) ? 0xF : left_step;
reg = twl6040_read_reg_cache(codec, TWL6040_REG_HSGAIN);
val = (~reg & TWL6040_HSL_VOL_MASK);
if (headset->ramp == TWL6040_RAMP_UP) {
/* ramp step up */
if (val < headset->left_vol) {
val += left_step;
reg &= ~TWL6040_HSL_VOL_MASK;
twl6040_write(codec, TWL6040_REG_HSGAIN,
(reg | (~val & TWL6040_HSL_VOL_MASK)));
} else {
left_complete = 1;
}
} else if (headset->ramp == TWL6040_RAMP_DOWN) {
/* ramp step down */
if (val > 0x0) {
val -= left_step;
reg &= ~TWL6040_HSL_VOL_MASK;
twl6040_write(codec, TWL6040_REG_HSGAIN, reg |
(~val & TWL6040_HSL_VOL_MASK));
} else {
left_complete = 1;
}
}
/* right channel */
right_step = (right_step > 0xF) ? 0xF : right_step;
reg = twl6040_read_reg_cache(codec, TWL6040_REG_HSGAIN);
val = (~reg & TWL6040_HSR_VOL_MASK) >> TWL6040_HSR_VOL_SHIFT;
if (headset->ramp == TWL6040_RAMP_UP) {
/* ramp step up */
if (val < headset->right_vol) {
val += right_step;
reg &= ~TWL6040_HSR_VOL_MASK;
twl6040_write(codec, TWL6040_REG_HSGAIN,
(reg | (~val << TWL6040_HSR_VOL_SHIFT)));
} else {
right_complete = 1;
}
} else if (headset->ramp == TWL6040_RAMP_DOWN) {
/* ramp step down */
if (val > 0x0) {
val -= right_step;
reg &= ~TWL6040_HSR_VOL_MASK;
twl6040_write(codec, TWL6040_REG_HSGAIN,
reg | (~val << TWL6040_HSR_VOL_SHIFT));
} else {
right_complete = 1;
}
}
return left_complete & right_complete;
}
/*
* Ramp HF PGA volume to minimise pops at stream startup and shutdown.
*/
static inline int twl6040_hf_ramp_step(struct snd_soc_codec *codec,
unsigned int left_step, unsigned int right_step)
{
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
struct twl6040_output *handsfree = &priv->handsfree;
int left_complete = 0, right_complete = 0;
u16 reg, val;
/* left channel */
left_step = (left_step > 0x1D) ? 0x1D : left_step;
reg = twl6040_read_reg_cache(codec, TWL6040_REG_HFLGAIN);
reg = 0x1D - reg;
val = (reg & TWL6040_HF_VOL_MASK);
if (handsfree->ramp == TWL6040_RAMP_UP) {
/* ramp step up */
if (val < handsfree->left_vol) {
val += left_step;
reg &= ~TWL6040_HF_VOL_MASK;
twl6040_write(codec, TWL6040_REG_HFLGAIN,
reg | (0x1D - val));
} else {
left_complete = 1;
}
} else if (handsfree->ramp == TWL6040_RAMP_DOWN) {
/* ramp step down */
if (val > 0) {
val -= left_step;
reg &= ~TWL6040_HF_VOL_MASK;
twl6040_write(codec, TWL6040_REG_HFLGAIN,
reg | (0x1D - val));
} else {
left_complete = 1;
}
}
/* right channel */
right_step = (right_step > 0x1D) ? 0x1D : right_step;
reg = twl6040_read_reg_cache(codec, TWL6040_REG_HFRGAIN);
reg = 0x1D - reg;
val = (reg & TWL6040_HF_VOL_MASK);
if (handsfree->ramp == TWL6040_RAMP_UP) {
/* ramp step up */
if (val < handsfree->right_vol) {
val += right_step;
reg &= ~TWL6040_HF_VOL_MASK;
twl6040_write(codec, TWL6040_REG_HFRGAIN,
reg | (0x1D - val));
} else {
right_complete = 1;
}
} else if (handsfree->ramp == TWL6040_RAMP_DOWN) {
/* ramp step down */
if (val > 0) {
val -= right_step;
reg &= ~TWL6040_HF_VOL_MASK;
twl6040_write(codec, TWL6040_REG_HFRGAIN,
reg | (0x1D - val));
}
}
return left_complete & right_complete;
}
/*
* This work ramps both output PGAs at stream start/stop time to
* minimise pop associated with DAPM power switching.
*/
static void twl6040_pga_hs_work(struct work_struct *work)
{
struct twl6040_data *priv =
container_of(work, struct twl6040_data, hs_delayed_work.work);
struct snd_soc_codec *codec = priv->codec;
struct twl6040_output *headset = &priv->headset;
unsigned int delay = headset->step_delay;
int i, headset_complete;
/* do we need to ramp at all ? */
if (headset->ramp == TWL6040_RAMP_NONE)
return;
/* HS PGA volumes have 4 bits of resolution to ramp */
for (i = 0; i <= 16; i++) {
headset_complete = 1;
if (headset->ramp != TWL6040_RAMP_NONE)
headset_complete = twl6040_hs_ramp_step(codec,
headset->left_step,
headset->right_step);
/* ramp finished ? */
if (headset_complete)
break;
/*
* TODO: tune: delay is longer over 0dB
* as increases are larger.
*/
if (i >= 8)
schedule_timeout_interruptible(msecs_to_jiffies(delay +
(delay >> 1)));
else
schedule_timeout_interruptible(msecs_to_jiffies(delay));
}
if (headset->ramp == TWL6040_RAMP_DOWN) {
headset->active = 0;
complete(&headset->ramp_done);
} else {
headset->active = 1;
}
headset->ramp = TWL6040_RAMP_NONE;
}
static void twl6040_pga_hf_work(struct work_struct *work)
{
struct twl6040_data *priv =
container_of(work, struct twl6040_data, hf_delayed_work.work);
struct snd_soc_codec *codec = priv->codec;
struct twl6040_output *handsfree = &priv->handsfree;
unsigned int delay = handsfree->step_delay;
int i, handsfree_complete;
/* do we need to ramp at all ? */
if (handsfree->ramp == TWL6040_RAMP_NONE)
return;
/* HF PGA volumes have 5 bits of resolution to ramp */
for (i = 0; i <= 32; i++) {
handsfree_complete = 1;
if (handsfree->ramp != TWL6040_RAMP_NONE)
handsfree_complete = twl6040_hf_ramp_step(codec,
handsfree->left_step,
handsfree->right_step);
/* ramp finished ? */
if (handsfree_complete)
break;
/*
* TODO: tune: delay is longer over 0dB
* as increases are larger.
*/
if (i >= 16)
schedule_timeout_interruptible(msecs_to_jiffies(delay +
(delay >> 1)));
else
schedule_timeout_interruptible(msecs_to_jiffies(delay));
}
if (handsfree->ramp == TWL6040_RAMP_DOWN) {
handsfree->active = 0;
complete(&handsfree->ramp_done);
} else
handsfree->active = 1;
handsfree->ramp = TWL6040_RAMP_NONE;
}
static int pga_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = w->codec;
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
struct twl6040_output *out;
struct delayed_work *work;
struct workqueue_struct *queue;
switch (w->shift) {
case 2:
case 3:
out = &priv->headset;
work = &priv->hs_delayed_work;
queue = priv->hs_workqueue;
out->step_delay = 5; /* 5 ms between volume ramp steps */
break;
case 4:
out = &priv->handsfree;
work = &priv->hf_delayed_work;
queue = priv->hf_workqueue;
out->step_delay = 5; /* 5 ms between volume ramp steps */
if (SND_SOC_DAPM_EVENT_ON(event))
priv->non_lp++;
else
priv->non_lp--;
break;
default:
return -1;
}
switch (event) {
case SND_SOC_DAPM_POST_PMU:
if (out->active)
break;
/* don't use volume ramp for power-up */
out->left_step = out->left_vol;
out->right_step = out->right_vol;
if (!delayed_work_pending(work)) {
out->ramp = TWL6040_RAMP_UP;
queue_delayed_work(queue, work,
msecs_to_jiffies(1));
}
break;
case SND_SOC_DAPM_PRE_PMD:
if (!out->active)
break;
if (!delayed_work_pending(work)) {
/* use volume ramp for power-down */
out->left_step = 1;
out->right_step = 1;
out->ramp = TWL6040_RAMP_DOWN;
INIT_COMPLETION(out->ramp_done);
queue_delayed_work(queue, work,
msecs_to_jiffies(1));
wait_for_completion_timeout(&out->ramp_done,
msecs_to_jiffies(2000));
}
break;
}
return 0;
}
/* twl6040 codec manual power-up sequence */
static void twl6040_power_up(struct snd_soc_codec *codec)
{
u8 ncpctl, ldoctl, lppllctl, accctl;
ncpctl = twl6040_read_reg_cache(codec, TWL6040_REG_NCPCTL);
ldoctl = twl6040_read_reg_cache(codec, TWL6040_REG_LDOCTL);
lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
accctl = twl6040_read_reg_cache(codec, TWL6040_REG_ACCCTL);
/* enable reference system */
ldoctl |= TWL6040_REFENA;
twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
msleep(10);
/* enable internal oscillator */
ldoctl |= TWL6040_OSCENA;
twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
udelay(10);
/* enable high-side ldo */
ldoctl |= TWL6040_HSLDOENA;
twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
udelay(244);
/* enable negative charge pump */
ncpctl |= TWL6040_NCPENA | TWL6040_NCPOPEN;
twl6040_write(codec, TWL6040_REG_NCPCTL, ncpctl);
udelay(488);
/* enable low-side ldo */
ldoctl |= TWL6040_LSLDOENA;
twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
udelay(244);
/* enable low-power pll */
lppllctl |= TWL6040_LPLLENA;
twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
/* reset state machine */
accctl |= TWL6040_RESETSPLIT;
twl6040_write(codec, TWL6040_REG_ACCCTL, accctl);
mdelay(5);
accctl &= ~TWL6040_RESETSPLIT;
twl6040_write(codec, TWL6040_REG_ACCCTL, accctl);
/* disable internal oscillator */
ldoctl &= ~TWL6040_OSCENA;
twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
}
/* twl6040 codec manual power-down sequence */
static void twl6040_power_down(struct snd_soc_codec *codec)
{
u8 ncpctl, ldoctl, lppllctl, accctl;
ncpctl = twl6040_read_reg_cache(codec, TWL6040_REG_NCPCTL);
ldoctl = twl6040_read_reg_cache(codec, TWL6040_REG_LDOCTL);
lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
accctl = twl6040_read_reg_cache(codec, TWL6040_REG_ACCCTL);
/* enable internal oscillator */
ldoctl |= TWL6040_OSCENA;
twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
udelay(10);
/* disable low-power pll */
lppllctl &= ~TWL6040_LPLLENA;
twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
/* disable low-side ldo */
ldoctl &= ~TWL6040_LSLDOENA;
twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
udelay(244);
/* disable negative charge pump */
ncpctl &= ~(TWL6040_NCPENA | TWL6040_NCPOPEN);
twl6040_write(codec, TWL6040_REG_NCPCTL, ncpctl);
udelay(488);
/* disable high-side ldo */
ldoctl &= ~TWL6040_HSLDOENA;
twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
udelay(244);
/* disable internal oscillator */
ldoctl &= ~TWL6040_OSCENA;
twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
/* disable reference system */
ldoctl &= ~TWL6040_REFENA;
twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
msleep(10);
}
/* set headset dac and driver power mode */
static int headset_power_mode(struct snd_soc_codec *codec, int high_perf)
{
int hslctl, hsrctl;
int mask = TWL6040_HSDRVMODEL | TWL6040_HSDACMODEL;
hslctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSLCTL);
hsrctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSRCTL);
if (high_perf) {
hslctl &= ~mask;
hsrctl &= ~mask;
} else {
hslctl |= mask;
hsrctl |= mask;
}
twl6040_write(codec, TWL6040_REG_HSLCTL, hslctl);
twl6040_write(codec, TWL6040_REG_HSRCTL, hsrctl);
return 0;
}
static int twl6040_hs_dac_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
msleep(1);
return 0;
}
static int twl6040_power_mode_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = w->codec;
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
if (SND_SOC_DAPM_EVENT_ON(event))
priv->non_lp++;
else
priv->non_lp--;
msleep(1);
return 0;
}
static void twl6040_hs_jack_report(struct snd_soc_codec *codec,
struct snd_soc_jack *jack, int report)
{
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
int status;
mutex_lock(&priv->mutex);
/* Sync status */
status = twl6040_read_reg_volatile(codec, TWL6040_REG_STATUS);
if (status & TWL6040_PLUGCOMP)
snd_soc_jack_report(jack, report, report);
else
snd_soc_jack_report(jack, 0, report);
mutex_unlock(&priv->mutex);
}
void twl6040_hs_jack_detect(struct snd_soc_codec *codec,
struct snd_soc_jack *jack, int report)
{
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
struct twl6040_jack_data *hs_jack = &priv->hs_jack;
hs_jack->jack = jack;
hs_jack->report = report;
twl6040_hs_jack_report(codec, hs_jack->jack, hs_jack->report);
}
EXPORT_SYMBOL_GPL(twl6040_hs_jack_detect);
static void twl6040_accessory_work(struct work_struct *work)
{
struct twl6040_data *priv = container_of(work,
struct twl6040_data, delayed_work.work);
struct snd_soc_codec *codec = priv->codec;
struct twl6040_jack_data *hs_jack = &priv->hs_jack;
twl6040_hs_jack_report(codec, hs_jack->jack, hs_jack->report);
}
/* audio interrupt handler */
static irqreturn_t twl6040_naudint_handler(int irq, void *data)
{
struct snd_soc_codec *codec = data;
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
u8 intid;
twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &intid, TWL6040_REG_INTID);
if (intid & TWL6040_THINT)
dev_alert(codec->dev, "die temp over-limit detection\n");
if ((intid & TWL6040_PLUGINT) || (intid & TWL6040_UNPLUGINT))
queue_delayed_work(priv->workqueue, &priv->delayed_work,
msecs_to_jiffies(200));
if (intid & TWL6040_HOOKINT)
dev_info(codec->dev, "hook detection\n");
if (intid & TWL6040_HFINT)
dev_alert(codec->dev, "hf drivers over current detection\n");
if (intid & TWL6040_VIBINT)
dev_alert(codec->dev, "vib drivers over current detection\n");
if (intid & TWL6040_READYINT)
complete(&priv->ready);
return IRQ_HANDLED;
}
static int twl6040_put_volsw(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct twl6040_data *twl6040_priv = snd_soc_codec_get_drvdata(codec);
struct twl6040_output *out = NULL;
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
int ret;
unsigned int reg = mc->reg;
/* For HS and HF we shadow the values and only actually write
* them out when active in order to ensure the amplifier comes on
* as quietly as possible. */
switch (reg) {
case TWL6040_REG_HSGAIN:
out = &twl6040_priv->headset;
break;
default:
break;
}
if (out) {
out->left_vol = ucontrol->value.integer.value[0];
out->right_vol = ucontrol->value.integer.value[1];
if (!out->active)
return 1;
}
ret = snd_soc_put_volsw(kcontrol, ucontrol);
if (ret < 0)
return ret;
return 1;
}
static int twl6040_get_volsw(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct twl6040_data *twl6040_priv = snd_soc_codec_get_drvdata(codec);
struct twl6040_output *out = &twl6040_priv->headset;
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
unsigned int reg = mc->reg;
switch (reg) {
case TWL6040_REG_HSGAIN:
out = &twl6040_priv->headset;
ucontrol->value.integer.value[0] = out->left_vol;
ucontrol->value.integer.value[1] = out->right_vol;
return 0;
default:
break;
}
return snd_soc_get_volsw(kcontrol, ucontrol);
}
static int twl6040_put_volsw_2r_vu(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct twl6040_data *twl6040_priv = snd_soc_codec_get_drvdata(codec);
struct twl6040_output *out = NULL;
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
int ret;
unsigned int reg = mc->reg;
/* For HS and HF we shadow the values and only actually write
* them out when active in order to ensure the amplifier comes on
* as quietly as possible. */
switch (reg) {
case TWL6040_REG_HFLGAIN:
case TWL6040_REG_HFRGAIN:
out = &twl6040_priv->handsfree;
break;
default:
break;
}
if (out) {
out->left_vol = ucontrol->value.integer.value[0];
out->right_vol = ucontrol->value.integer.value[1];
if (!out->active)
return 1;
}
ret = snd_soc_put_volsw_2r(kcontrol, ucontrol);
if (ret < 0)
return ret;
return 1;
}
static int twl6040_get_volsw_2r(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct twl6040_data *twl6040_priv = snd_soc_codec_get_drvdata(codec);
struct twl6040_output *out = &twl6040_priv->handsfree;
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
unsigned int reg = mc->reg;
/* If these are cached registers use the cache */
switch (reg) {
case TWL6040_REG_HFLGAIN:
case TWL6040_REG_HFRGAIN:
out = &twl6040_priv->handsfree;
ucontrol->value.integer.value[0] = out->left_vol;
ucontrol->value.integer.value[1] = out->right_vol;
return 0;
default:
break;
}
return snd_soc_get_volsw_2r(kcontrol, ucontrol);
}
/* double control with volume update */
#define SOC_TWL6040_DOUBLE_TLV(xname, xreg, shift_left, shift_right, 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, .get = twl6040_get_volsw, \
.put = twl6040_put_volsw, \
.private_value = (unsigned long)&(struct soc_mixer_control) \
{.reg = xreg, .shift = shift_left, .rshift = shift_right,\
.max = xmax, .platform_max = xmax, .invert = xinvert} }
/* double control with volume update */
#define SOC_TWL6040_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 | \
SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
.tlv.p = (tlv_array), \
.info = snd_soc_info_volsw_2r, \
.get = twl6040_get_volsw_2r, .put = twl6040_put_volsw_2r_vu, \
.private_value = (unsigned long)&(struct soc_mixer_control) \
{.reg = reg_left, .rreg = reg_right, .shift = xshift, \
.rshift = xshift, .max = xmax, .invert = xinvert}, }
/*
* MICATT volume control:
* from -6 to 0 dB in 6 dB steps
*/
static DECLARE_TLV_DB_SCALE(mic_preamp_tlv, -600, 600, 0);
/*
* MICGAIN volume control:
* from -6 to 30 dB in 6 dB steps
*/
static DECLARE_TLV_DB_SCALE(mic_amp_tlv, -600, 600, 0);
/*
* AFMGAIN volume control:
* from 18 to 24 dB in 6 dB steps
*/
static DECLARE_TLV_DB_SCALE(afm_amp_tlv, 1800, 600, 0);
/*
* HSGAIN volume control:
* from -30 to 0 dB in 2 dB steps
*/
static DECLARE_TLV_DB_SCALE(hs_tlv, -3000, 200, 0);
/*
* HFGAIN volume control:
* from -52 to 6 dB in 2 dB steps
*/
static DECLARE_TLV_DB_SCALE(hf_tlv, -5200, 200, 0);
/*
* EPGAIN volume control:
* from -24 to 6 dB in 2 dB steps
*/
static DECLARE_TLV_DB_SCALE(ep_tlv, -2400, 200, 0);
/* Left analog microphone selection */
static const char *twl6040_amicl_texts[] =
{"Headset Mic", "Main Mic", "Aux/FM Left", "Off"};
/* Right analog microphone selection */
static const char *twl6040_amicr_texts[] =
{"Headset Mic", "Sub Mic", "Aux/FM Right", "Off"};
static const struct soc_enum twl6040_enum[] = {
SOC_ENUM_SINGLE(TWL6040_REG_MICLCTL, 3, 4, twl6040_amicl_texts),
SOC_ENUM_SINGLE(TWL6040_REG_MICRCTL, 3, 4, twl6040_amicr_texts),
};
static const char *twl6040_hs_texts[] = {
"Off", "HS DAC", "Line-In amp"
};
static const struct soc_enum twl6040_hs_enum[] = {
SOC_ENUM_SINGLE(TWL6040_REG_HSLCTL, 5, ARRAY_SIZE(twl6040_hs_texts),
twl6040_hs_texts),
SOC_ENUM_SINGLE(TWL6040_REG_HSRCTL, 5, ARRAY_SIZE(twl6040_hs_texts),
twl6040_hs_texts),
};
static const char *twl6040_hf_texts[] = {
"Off", "HF DAC", "Line-In amp"
};
static const struct soc_enum twl6040_hf_enum[] = {
SOC_ENUM_SINGLE(TWL6040_REG_HFLCTL, 2, ARRAY_SIZE(twl6040_hf_texts),
twl6040_hf_texts),
SOC_ENUM_SINGLE(TWL6040_REG_HFRCTL, 2, ARRAY_SIZE(twl6040_hf_texts),
twl6040_hf_texts),
};
static const struct snd_kcontrol_new amicl_control =
SOC_DAPM_ENUM("Route", twl6040_enum[0]);
static const struct snd_kcontrol_new amicr_control =
SOC_DAPM_ENUM("Route", twl6040_enum[1]);
/* Headset DAC playback switches */
static const struct snd_kcontrol_new hsl_mux_controls =
SOC_DAPM_ENUM("Route", twl6040_hs_enum[0]);
static const struct snd_kcontrol_new hsr_mux_controls =
SOC_DAPM_ENUM("Route", twl6040_hs_enum[1]);
/* Handsfree DAC playback switches */
static const struct snd_kcontrol_new hfl_mux_controls =
SOC_DAPM_ENUM("Route", twl6040_hf_enum[0]);
static const struct snd_kcontrol_new hfr_mux_controls =
SOC_DAPM_ENUM("Route", twl6040_hf_enum[1]);
static const struct snd_kcontrol_new ep_driver_switch_controls =
SOC_DAPM_SINGLE("Switch", TWL6040_REG_EARCTL, 0, 1, 0);
static const struct snd_kcontrol_new twl6040_snd_controls[] = {
/* Capture gains */
SOC_DOUBLE_TLV("Capture Preamplifier Volume",
TWL6040_REG_MICGAIN, 6, 7, 1, 1, mic_preamp_tlv),
SOC_DOUBLE_TLV("Capture Volume",
TWL6040_REG_MICGAIN, 0, 3, 4, 0, mic_amp_tlv),
/* AFM gains */
SOC_DOUBLE_TLV("Aux FM Volume",
TWL6040_REG_LINEGAIN, 0, 4, 0xF, 0, afm_amp_tlv),
/* Playback gains */
SOC_TWL6040_DOUBLE_TLV("Headset Playback Volume",
TWL6040_REG_HSGAIN, 0, 4, 0xF, 1, hs_tlv),
SOC_TWL6040_DOUBLE_R_TLV("Handsfree Playback Volume",
TWL6040_REG_HFLGAIN, TWL6040_REG_HFRGAIN, 0, 0x1D, 1, hf_tlv),
SOC_SINGLE_TLV("Earphone Playback Volume",
TWL6040_REG_EARCTL, 1, 0xF, 1, ep_tlv),
};
static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
/* Inputs */
SND_SOC_DAPM_INPUT("MAINMIC"),
SND_SOC_DAPM_INPUT("HSMIC"),
SND_SOC_DAPM_INPUT("SUBMIC"),
SND_SOC_DAPM_INPUT("AFML"),
SND_SOC_DAPM_INPUT("AFMR"),
/* Outputs */
SND_SOC_DAPM_OUTPUT("HSOL"),
SND_SOC_DAPM_OUTPUT("HSOR"),
SND_SOC_DAPM_OUTPUT("HFL"),
SND_SOC_DAPM_OUTPUT("HFR"),
SND_SOC_DAPM_OUTPUT("EP"),
/* Analog input muxes for the capture amplifiers */
SND_SOC_DAPM_MUX("Analog Left Capture Route",
SND_SOC_NOPM, 0, 0, &amicl_control),
SND_SOC_DAPM_MUX("Analog Right Capture Route",
SND_SOC_NOPM, 0, 0, &amicr_control),
/* Analog capture PGAs */
SND_SOC_DAPM_PGA("MicAmpL",
TWL6040_REG_MICLCTL, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("MicAmpR",
TWL6040_REG_MICRCTL, 0, 0, NULL, 0),
/* Auxiliary FM PGAs */
SND_SOC_DAPM_PGA("AFMAmpL",
TWL6040_REG_MICLCTL, 1, 0, NULL, 0),
SND_SOC_DAPM_PGA("AFMAmpR",
TWL6040_REG_MICRCTL, 1, 0, NULL, 0),
/* ADCs */
SND_SOC_DAPM_ADC("ADC Left", "Left Front Capture",
TWL6040_REG_MICLCTL, 2, 0),
SND_SOC_DAPM_ADC("ADC Right", "Right Front Capture",
TWL6040_REG_MICRCTL, 2, 0),
/* Microphone bias */
SND_SOC_DAPM_MICBIAS("Headset Mic Bias",
TWL6040_REG_AMICBCTL, 0, 0),
SND_SOC_DAPM_MICBIAS("Main Mic Bias",
TWL6040_REG_AMICBCTL, 4, 0),
SND_SOC_DAPM_MICBIAS("Digital Mic1 Bias",
TWL6040_REG_DMICBCTL, 0, 0),
SND_SOC_DAPM_MICBIAS("Digital Mic2 Bias",
TWL6040_REG_DMICBCTL, 4, 0),
/* DACs */
SND_SOC_DAPM_DAC_E("HSDAC Left", "Headset Playback",
TWL6040_REG_HSLCTL, 0, 0,
twl6040_hs_dac_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_DAC_E("HSDAC Right", "Headset Playback",
TWL6040_REG_HSRCTL, 0, 0,
twl6040_hs_dac_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_DAC_E("HFDAC Left", "Handsfree Playback",
TWL6040_REG_HFLCTL, 0, 0,
twl6040_power_mode_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_DAC_E("HFDAC Right", "Handsfree Playback",
TWL6040_REG_HFRCTL, 0, 0,
twl6040_power_mode_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_MUX("HF Left Playback",
SND_SOC_NOPM, 0, 0, &hfl_mux_controls),
SND_SOC_DAPM_MUX("HF Right Playback",
SND_SOC_NOPM, 0, 0, &hfr_mux_controls),
/* Analog playback Muxes */
SND_SOC_DAPM_MUX("HS Left Playback",
SND_SOC_NOPM, 0, 0, &hsl_mux_controls),
SND_SOC_DAPM_MUX("HS Right Playback",
SND_SOC_NOPM, 0, 0, &hsr_mux_controls),
/* Analog playback drivers */
SND_SOC_DAPM_OUT_DRV_E("Handsfree Left Driver",
TWL6040_REG_HFLCTL, 4, 0, NULL, 0,
pga_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_OUT_DRV_E("Handsfree Right Driver",
TWL6040_REG_HFRCTL, 4, 0, NULL, 0,
pga_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_OUT_DRV_E("Headset Left Driver",
TWL6040_REG_HSLCTL, 2, 0, NULL, 0,
pga_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_OUT_DRV_E("Headset Right Driver",
TWL6040_REG_HSRCTL, 2, 0, NULL, 0,
pga_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_SWITCH_E("Earphone Driver",
SND_SOC_NOPM, 0, 0, &ep_driver_switch_controls,
twl6040_power_mode_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
/* Analog playback PGAs */
SND_SOC_DAPM_PGA("HFDAC Left PGA",
TWL6040_REG_HFLCTL, 1, 0, NULL, 0),
SND_SOC_DAPM_PGA("HFDAC Right PGA",
TWL6040_REG_HFRCTL, 1, 0, NULL, 0),
};
static const struct snd_soc_dapm_route intercon[] = {
/* Capture path */
{"Analog Left Capture Route", "Headset Mic", "HSMIC"},
{"Analog Left Capture Route", "Main Mic", "MAINMIC"},
{"Analog Left Capture Route", "Aux/FM Left", "AFML"},
{"Analog Right Capture Route", "Headset Mic", "HSMIC"},
{"Analog Right Capture Route", "Sub Mic", "SUBMIC"},
{"Analog Right Capture Route", "Aux/FM Right", "AFMR"},
{"MicAmpL", NULL, "Analog Left Capture Route"},
{"MicAmpR", NULL, "Analog Right Capture Route"},
{"ADC Left", NULL, "MicAmpL"},
{"ADC Right", NULL, "MicAmpR"},
/* AFM path */
{"AFMAmpL", "NULL", "AFML"},
{"AFMAmpR", "NULL", "AFMR"},
{"HS Left Playback", "HS DAC", "HSDAC Left"},
{"HS Left Playback", "Line-In amp", "AFMAmpL"},
{"HS Right Playback", "HS DAC", "HSDAC Right"},
{"HS Right Playback", "Line-In amp", "AFMAmpR"},
{"Headset Left Driver", "NULL", "HS Left Playback"},
{"Headset Right Driver", "NULL", "HS Right Playback"},
{"HSOL", NULL, "Headset Left Driver"},
{"HSOR", NULL, "Headset Right Driver"},
/* Earphone playback path */
{"Earphone Driver", "Switch", "HSDAC Left"},
{"EP", NULL, "Earphone Driver"},
{"HF Left Playback", "HF DAC", "HFDAC Left"},
{"HF Left Playback", "Line-In amp", "AFMAmpL"},
{"HF Right Playback", "HF DAC", "HFDAC Right"},
{"HF Right Playback", "Line-In amp", "AFMAmpR"},
{"HFDAC Left PGA", NULL, "HF Left Playback"},
{"HFDAC Right PGA", NULL, "HF Right Playback"},
{"Handsfree Left Driver", "Switch", "HFDAC Left PGA"},
{"Handsfree Right Driver", "Switch", "HFDAC Right PGA"},
{"HFL", NULL, "Handsfree Left Driver"},
{"HFR", NULL, "Handsfree Right Driver"},
};
static int twl6040_add_widgets(struct snd_soc_codec *codec)
{
struct snd_soc_dapm_context *dapm = &codec->dapm;
snd_soc_dapm_new_controls(dapm, twl6040_dapm_widgets,
ARRAY_SIZE(twl6040_dapm_widgets));
snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon));
snd_soc_dapm_new_widgets(dapm);
return 0;
}
static int twl6040_power_up_completion(struct snd_soc_codec *codec,
int naudint)
{
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
int time_left;
u8 intid;
time_left = wait_for_completion_timeout(&priv->ready,
msecs_to_jiffies(144));
if (!time_left) {
twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &intid,
TWL6040_REG_INTID);
if (!(intid & TWL6040_READYINT)) {
dev_err(codec->dev, "timeout waiting for READYINT\n");
return -ETIMEDOUT;
}
}
priv->codec_powered = 1;
return 0;
}
static int twl6040_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
int audpwron = priv->audpwron;
int naudint = priv->naudint;
int ret;
switch (level) {
case SND_SOC_BIAS_ON:
break;
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
if (priv->codec_powered)
break;
if (gpio_is_valid(audpwron)) {
/* use AUDPWRON line */
gpio_set_value(audpwron, 1);
/* wait for power-up completion */
ret = twl6040_power_up_completion(codec, naudint);
if (ret)
return ret;
/* sync registers updated during power-up sequence */
twl6040_read_reg_volatile(codec, TWL6040_REG_NCPCTL);
twl6040_read_reg_volatile(codec, TWL6040_REG_LDOCTL);
twl6040_read_reg_volatile(codec, TWL6040_REG_LPPLLCTL);
} else {
/* use manual power-up sequence */
twl6040_power_up(codec);
priv->codec_powered = 1;
}
/* initialize vdd/vss registers with reg_cache */
twl6040_init_vdd_regs(codec);
/* Set external boost GPO */
twl6040_write(codec, TWL6040_REG_GPOCTL, 0x02);
/* Set initial minimal gain values */
twl6040_write(codec, TWL6040_REG_HSGAIN, 0xFF);
twl6040_write(codec, TWL6040_REG_EARCTL, 0x1E);
twl6040_write(codec, TWL6040_REG_HFLGAIN, 0x1D);
twl6040_write(codec, TWL6040_REG_HFRGAIN, 0x1D);
break;
case SND_SOC_BIAS_OFF:
if (!priv->codec_powered)
break;
if (gpio_is_valid(audpwron)) {
/* use AUDPWRON line */
gpio_set_value(audpwron, 0);
/* power-down sequence latency */
udelay(500);
/* sync registers updated during power-down sequence */
twl6040_read_reg_volatile(codec, TWL6040_REG_NCPCTL);
twl6040_read_reg_volatile(codec, TWL6040_REG_LDOCTL);
twl6040_write_reg_cache(codec, TWL6040_REG_LPPLLCTL,
0x00);
} else {
/* use manual power-down sequence */
twl6040_power_down(codec);
}
priv->codec_powered = 0;
break;
}
codec->dapm.bias_level = level;
return 0;
}
/* set of rates for each pll: low-power and high-performance */
static unsigned int lp_rates[] = {
88200,
96000,
};
static struct snd_pcm_hw_constraint_list lp_constraints = {
.count = ARRAY_SIZE(lp_rates),
.list = lp_rates,
};
static unsigned int hp_rates[] = {
96000,
};
static struct snd_pcm_hw_constraint_list hp_constraints = {
.count = ARRAY_SIZE(hp_rates),
.list = hp_rates,
};
static int twl6040_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec *codec = rtd->codec;
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
priv->sysclk_constraints);
return 0;
}
static int twl6040_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 twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
u8 lppllctl;
int rate;
/* nothing to do for high-perf pll, it supports only 48 kHz */
if (priv->pll == TWL6040_HPPLL_ID)
return 0;
lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
rate = params_rate(params);
switch (rate) {
case 11250:
case 22500:
case 44100:
case 88200:
lppllctl |= TWL6040_LPLLFIN;
priv->sysclk = 17640000;
break;
case 8000:
case 16000:
case 32000:
case 48000:
case 96000:
lppllctl &= ~TWL6040_LPLLFIN;
priv->sysclk = 19200000;
break;
default:
dev_err(codec->dev, "unsupported rate %d\n", rate);
return -EINVAL;
}
twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
return 0;
}
static int twl6040_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec *codec = rtd->codec;
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
if (!priv->sysclk) {
dev_err(codec->dev,
"no mclk configured, call set_sysclk() on init\n");
return -EINVAL;
}
/*
* capture is not supported at 17.64 MHz,
* it's reserved for headset low-power playback scenario
*/
if ((priv->sysclk == 17640000) &&
substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
dev_err(codec->dev,
"capture mode is not supported at %dHz\n",
priv->sysclk);
return -EINVAL;
}
if ((priv->sysclk == 17640000) && priv->non_lp) {
dev_err(codec->dev,
"some enabled paths aren't supported at %dHz\n",
priv->sysclk);
return -EPERM;
}
return 0;
}
static int twl6040_set_dai_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_codec *codec = codec_dai->codec;
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
u8 hppllctl, lppllctl;
hppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_HPPLLCTL);
lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
switch (clk_id) {
case TWL6040_SYSCLK_SEL_LPPLL:
switch (freq) {
case 32768:
/* headset dac and driver must be in low-power mode */
headset_power_mode(codec, 0);
/* clk32k input requires low-power pll */
lppllctl |= TWL6040_LPLLENA;
twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
mdelay(5);
lppllctl &= ~TWL6040_HPLLSEL;
twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
hppllctl &= ~TWL6040_HPLLENA;
twl6040_write(codec, TWL6040_REG_HPPLLCTL, hppllctl);
break;
default:
dev_err(codec->dev, "unknown mclk freq %d\n", freq);
return -EINVAL;
}
/* lppll divider */
switch (priv->sysclk) {
case 17640000:
lppllctl |= TWL6040_LPLLFIN;
break;
case 19200000:
lppllctl &= ~TWL6040_LPLLFIN;
break;
default:
/* sysclk not yet configured */
lppllctl &= ~TWL6040_LPLLFIN;
priv->sysclk = 19200000;
break;
}
twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
priv->pll = TWL6040_LPPLL_ID;
priv->sysclk_constraints = &lp_constraints;
break;
case TWL6040_SYSCLK_SEL_HPPLL:
hppllctl &= ~TWL6040_MCLK_MSK;
switch (freq) {
case 12000000:
/* mclk input, pll enabled */
hppllctl |= TWL6040_MCLK_12000KHZ |
TWL6040_HPLLSQRBP |
TWL6040_HPLLENA;
break;
case 19200000:
/* mclk input, pll disabled */
hppllctl |= TWL6040_MCLK_19200KHZ |
TWL6040_HPLLSQRENA |
TWL6040_HPLLBP;
break;
case 26000000:
/* mclk input, pll enabled */
hppllctl |= TWL6040_MCLK_26000KHZ |
TWL6040_HPLLSQRBP |
TWL6040_HPLLENA;
break;
case 38400000:
/* clk slicer, pll disabled */
hppllctl |= TWL6040_MCLK_38400KHZ |
TWL6040_HPLLSQRENA |
TWL6040_HPLLBP;
break;
default:
dev_err(codec->dev, "unknown mclk freq %d\n", freq);
return -EINVAL;
}
/* headset dac and driver must be in high-performance mode */
headset_power_mode(codec, 1);
twl6040_write(codec, TWL6040_REG_HPPLLCTL, hppllctl);
udelay(500);
lppllctl |= TWL6040_HPLLSEL;
twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
lppllctl &= ~TWL6040_LPLLENA;
twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
/* high-performance pll can provide only 19.2 MHz */
priv->pll = TWL6040_HPPLL_ID;
priv->sysclk = 19200000;
priv->sysclk_constraints = &hp_constraints;
break;
default:
dev_err(codec->dev, "unknown clk_id %d\n", clk_id);
return -EINVAL;
}
return 0;
}
static struct snd_soc_dai_ops twl6040_dai_ops = {
.startup = twl6040_startup,
.hw_params = twl6040_hw_params,
.prepare = twl6040_prepare,
.set_sysclk = twl6040_set_dai_sysclk,
};
static struct snd_soc_dai_driver twl6040_dai = {
.name = "twl6040-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 4,
.rates = TWL6040_RATES,
.formats = TWL6040_FORMATS,
},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = TWL6040_RATES,
.formats = TWL6040_FORMATS,
},
.ops = &twl6040_dai_ops,
};
#ifdef CONFIG_PM
static int twl6040_suspend(struct snd_soc_codec *codec, pm_message_t state)
{
twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int twl6040_resume(struct snd_soc_codec *codec)
{
twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
twl6040_set_bias_level(codec, codec->dapm.suspend_bias_level);
return 0;
}
#else
#define twl6040_suspend NULL
#define twl6040_resume NULL
#endif
static int twl6040_probe(struct snd_soc_codec *codec)
{
struct twl4030_codec_data *twl_codec = codec->dev->platform_data;
struct twl6040_data *priv;
int audpwron, naudint;
int ret = 0;
u8 icrev, intmr = TWL6040_ALLINT_MSK;
priv = kzalloc(sizeof(struct twl6040_data), GFP_KERNEL);
if (priv == NULL)
return -ENOMEM;
snd_soc_codec_set_drvdata(codec, priv);
priv->codec = codec;
twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &icrev, TWL6040_REG_ASICREV);
if (twl_codec && (icrev > 0))
audpwron = twl_codec->audpwron_gpio;
else
audpwron = -EINVAL;
if (twl_codec)
naudint = twl_codec->naudint_irq;
else
naudint = 0;
priv->audpwron = audpwron;
priv->naudint = naudint;
priv->workqueue = create_singlethread_workqueue("twl6040-codec");
if (!priv->workqueue) {
ret = -ENOMEM;
goto work_err;
}
INIT_DELAYED_WORK(&priv->delayed_work, twl6040_accessory_work);
mutex_init(&priv->mutex);
init_completion(&priv->ready);
init_completion(&priv->headset.ramp_done);
init_completion(&priv->handsfree.ramp_done);
if (gpio_is_valid(audpwron)) {
ret = gpio_request(audpwron, "audpwron");
if (ret)
goto gpio1_err;
ret = gpio_direction_output(audpwron, 0);
if (ret)
goto gpio2_err;
priv->codec_powered = 0;
/* enable only codec ready interrupt */
intmr &= ~(TWL6040_READYMSK | TWL6040_PLUGMSK);
/* reset interrupt status to allow correct power up sequence */
twl6040_read_reg_volatile(codec, TWL6040_REG_INTID);
}
twl6040_write(codec, TWL6040_REG_INTMR, intmr);
if (naudint) {
/* audio interrupt */
ret = request_threaded_irq(naudint, NULL,
twl6040_naudint_handler,
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
"twl6040_codec", codec);
if (ret)
goto gpio2_err;
}
/* init vio registers */
twl6040_init_vio_regs(codec);
priv->hf_workqueue = create_singlethread_workqueue("twl6040-hf");
if (priv->hf_workqueue == NULL) {
ret = -ENOMEM;
goto irq_err;
}
priv->hs_workqueue = create_singlethread_workqueue("twl6040-hs");
if (priv->hs_workqueue == NULL) {
ret = -ENOMEM;
goto wq_err;
}
INIT_DELAYED_WORK(&priv->hs_delayed_work, twl6040_pga_hs_work);
INIT_DELAYED_WORK(&priv->hf_delayed_work, twl6040_pga_hf_work);
/* power on device */
ret = twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
if (ret)
goto bias_err;
snd_soc_add_controls(codec, twl6040_snd_controls,
ARRAY_SIZE(twl6040_snd_controls));
twl6040_add_widgets(codec);
return 0;
bias_err:
destroy_workqueue(priv->hs_workqueue);
wq_err:
destroy_workqueue(priv->hf_workqueue);
irq_err:
if (naudint)
free_irq(naudint, codec);
gpio2_err:
if (gpio_is_valid(audpwron))
gpio_free(audpwron);
gpio1_err:
destroy_workqueue(priv->workqueue);
work_err:
kfree(priv);
return ret;
}
static int twl6040_remove(struct snd_soc_codec *codec)
{
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
int audpwron = priv->audpwron;
int naudint = priv->naudint;
twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
if (gpio_is_valid(audpwron))
gpio_free(audpwron);
if (naudint)
free_irq(naudint, codec);
destroy_workqueue(priv->workqueue);
destroy_workqueue(priv->hf_workqueue);
destroy_workqueue(priv->hs_workqueue);
kfree(priv);
return 0;
}
static struct snd_soc_codec_driver soc_codec_dev_twl6040 = {
.probe = twl6040_probe,
.remove = twl6040_remove,
.suspend = twl6040_suspend,
.resume = twl6040_resume,
.read = twl6040_read_reg_cache,
.write = twl6040_write,
.set_bias_level = twl6040_set_bias_level,
.reg_cache_size = ARRAY_SIZE(twl6040_reg),
.reg_word_size = sizeof(u8),
.reg_cache_default = twl6040_reg,
};
static int __devinit twl6040_codec_probe(struct platform_device *pdev)
{
return snd_soc_register_codec(&pdev->dev,
&soc_codec_dev_twl6040, &twl6040_dai, 1);
}
static int __devexit twl6040_codec_remove(struct platform_device *pdev)
{
snd_soc_unregister_codec(&pdev->dev);
return 0;
}
static struct platform_driver twl6040_codec_driver = {
.driver = {
.name = "twl6040-codec",
.owner = THIS_MODULE,
},
.probe = twl6040_codec_probe,
.remove = __devexit_p(twl6040_codec_remove),
};
static int __init twl6040_codec_init(void)
{
return platform_driver_register(&twl6040_codec_driver);
}
module_init(twl6040_codec_init);
static void __exit twl6040_codec_exit(void)
{
platform_driver_unregister(&twl6040_codec_driver);
}
module_exit(twl6040_codec_exit);
MODULE_DESCRIPTION("ASoC TWL6040 codec driver");
MODULE_AUTHOR("Misael Lopez Cruz");
MODULE_LICENSE("GPL");
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