/*
* 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/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include "twl6040.h"
#define TWL6040_RATES (SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
#define TWL6040_FORMATS (SNDRV_PCM_FMTBIT_S32_LE)
/* codec private data */
struct twl6040_data {
struct snd_soc_codec codec;
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;
};
/*
* 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(TWL4030_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(TWL4030_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]);
}
}
/* 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;
}
/* 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(TWL4030_MODULE_AUDIO_VOICE, &intid, TWL6040_REG_INTID);
switch (intid) {
case TWL6040_THINT:
dev_alert(codec->dev, "die temp over-limit detection\n");
break;
case TWL6040_PLUGINT:
case TWL6040_UNPLUGINT:
case TWL6040_HOOKINT:
break;
case TWL6040_HFINT:
dev_alert(codec->dev, "hf drivers over current detection\n");
break;
case TWL6040_VIBINT:
dev_alert(codec->dev, "vib drivers over current detection\n");
break;
case TWL6040_READYINT:
complete(&priv->ready);
break;
default:
dev_err(codec->dev, "unknown audio interrupt %d\n", intid);
break;
}
return IRQ_HANDLED;
}
/*
* 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);
/*
* 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, 3, twl6040_amicl_texts),
SOC_ENUM_SINGLE(TWL6040_REG_MICRCTL, 3, 3, twl6040_amicr_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 hsdacl_switch_controls =
SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSLCTL, 5, 1, 0);
static const struct snd_kcontrol_new hsdacr_switch_controls =
SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSRCTL, 5, 1, 0);
/* Handsfree DAC playback switches */
static const struct snd_kcontrol_new hfdacl_switch_controls =
SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFLCTL, 2, 1, 0);
static const struct snd_kcontrol_new hfdacr_switch_controls =
SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFRCTL, 2, 1, 0);
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),
/* Playback gains */
SOC_DOUBLE_TLV("Headset Playback Volume",
TWL6040_REG_HSGAIN, 0, 4, 0xF, 1, hs_tlv),
SOC_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),
/* 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),
/* Analog playback switches */
SND_SOC_DAPM_SWITCH("HSDAC Left Playback",
SND_SOC_NOPM, 0, 0, &hsdacl_switch_controls),
SND_SOC_DAPM_SWITCH("HSDAC Right Playback",
SND_SOC_NOPM, 0, 0, &hsdacr_switch_controls),
SND_SOC_DAPM_SWITCH("HFDAC Left Playback",
SND_SOC_NOPM, 0, 0, &hfdacl_switch_controls),
SND_SOC_DAPM_SWITCH("HFDAC Right Playback",
SND_SOC_NOPM, 0, 0, &hfdacr_switch_controls),
/* Analog playback drivers */
SND_SOC_DAPM_PGA_E("Handsfree Left Driver",
TWL6040_REG_HFLCTL, 4, 0, NULL, 0,
twl6040_power_mode_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_PGA_E("Handsfree Right Driver",
TWL6040_REG_HFRCTL, 4, 0, NULL, 0,
twl6040_power_mode_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_PGA("Headset Left Driver",
TWL6040_REG_HSLCTL, 2, 0, NULL, 0),
SND_SOC_DAPM_PGA("Headset Right Driver",
TWL6040_REG_HSRCTL, 2, 0, NULL, 0),
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"},
/* Headset playback path */
{"HSDAC Left Playback", "Switch", "HSDAC Left"},
{"HSDAC Right Playback", "Switch", "HSDAC Right"},
{"Headset Left Driver", NULL, "HSDAC Left Playback"},
{"Headset Right Driver", NULL, "HSDAC Right Playback"},
{"HSOL", NULL, "Headset Left Driver"},
{"HSOR", NULL, "Headset Right Driver"},
/* Earphone playback path */
{"Earphone Driver", "Switch", "HSDAC Left"},
{"EP", NULL, "Earphone Driver"},
/* Handsfree playback path */
{"HFDAC Left Playback", "Switch", "HFDAC Left"},
{"HFDAC Right Playback", "Switch", "HFDAC Right"},
{"HFDAC Left PGA", NULL, "HFDAC Left Playback"},
{"HFDAC Right PGA", NULL, "HFDAC 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)
{
snd_soc_dapm_new_controls(codec, twl6040_dapm_widgets,
ARRAY_SIZE(twl6040_dapm_widgets));
snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
snd_soc_dapm_new_widgets(codec);
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(48));
if (!time_left) {
twl_i2c_read_u8(TWL4030_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);
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->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_device *socdev = rtd->socdev;
struct snd_soc_codec *codec = socdev->card->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) {
dev_err(codec->dev,
"capture mode is not supported at %dHz\n",
priv->sysclk);
return -EINVAL;
}
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_device *socdev = rtd->socdev;
struct snd_soc_codec *codec = socdev->card->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 88200:
lppllctl |= TWL6040_LPLLFIN;
priv->sysclk = 17640000;
break;
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_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
struct snd_soc_codec *codec = socdev->card->codec;
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
/*
* low-power playback mode is restricted
* for headset path only
*/
if ((priv->sysclk == 17640000) && priv->non_lp) {
dev_err(codec->dev,
"some enabled paths aren't supported at %dHz\n",
priv->sysclk);
return -EPERM;
}
break;
default:
break;
}
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,
.trigger = twl6040_trigger,
.set_sysclk = twl6040_set_dai_sysclk,
};
struct snd_soc_dai twl6040_dai = {
.name = "twl6040",
.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,
};
EXPORT_SYMBOL_GPL(twl6040_dai);
#ifdef CONFIG_PM
static int twl6040_suspend(struct platform_device *pdev, pm_message_t state)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->card->codec;
twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int twl6040_resume(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->card->codec;
twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return 0;
}
#else
#define twl6040_suspend NULL
#define twl6040_resume NULL
#endif
static struct snd_soc_codec *twl6040_codec;
static int twl6040_probe(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec;
int ret = 0;
BUG_ON(!twl6040_codec);
codec = twl6040_codec;
socdev->card->codec = codec;
/* register pcms */
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
if (ret < 0) {
dev_err(&pdev->dev, "failed to create pcms\n");
return ret;
}
snd_soc_add_controls(codec, twl6040_snd_controls,
ARRAY_SIZE(twl6040_snd_controls));
twl6040_add_widgets(codec);
if (ret < 0) {
dev_err(&pdev->dev, "failed to register card\n");
goto card_err;
}
return ret;
card_err:
snd_soc_free_pcms(socdev);
snd_soc_dapm_free(socdev);
return ret;
}
static int twl6040_remove(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->card->codec;
twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
snd_soc_free_pcms(socdev);
snd_soc_dapm_free(socdev);
kfree(codec);
return 0;
}
struct snd_soc_codec_device soc_codec_dev_twl6040 = {
.probe = twl6040_probe,
.remove = twl6040_remove,
.suspend = twl6040_suspend,
.resume = twl6040_resume,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_twl6040);
static int __devinit twl6040_codec_probe(struct platform_device *pdev)
{
struct twl4030_codec_data *twl_codec = pdev->dev.platform_data;
struct snd_soc_codec *codec;
struct twl6040_data *priv;
int audpwron, naudint;
int ret = 0;
priv = kzalloc(sizeof(struct twl6040_data), GFP_KERNEL);
if (priv == NULL)
return -ENOMEM;
if (twl_codec) {
audpwron = twl_codec->audpwron_gpio;
naudint = twl_codec->naudint_irq;
} else {
audpwron = -EINVAL;
naudint = 0;
}
priv->audpwron = audpwron;
priv->naudint = naudint;
codec = &priv->codec;
codec->dev = &pdev->dev;
twl6040_dai.dev = &pdev->dev;
codec->name = "twl6040";
codec->owner = THIS_MODULE;
codec->read = twl6040_read_reg_cache;
codec->write = twl6040_write;
codec->set_bias_level = twl6040_set_bias_level;
snd_soc_codec_set_drvdata(codec, priv);
codec->dai = &twl6040_dai;
codec->num_dai = 1;
codec->reg_cache_size = ARRAY_SIZE(twl6040_reg);
codec->reg_cache = kmemdup(twl6040_reg, sizeof(twl6040_reg),
GFP_KERNEL);
if (codec->reg_cache == NULL) {
ret = -ENOMEM;
goto cache_err;
}
mutex_init(&codec->mutex);
INIT_LIST_HEAD(&codec->dapm_widgets);
INIT_LIST_HEAD(&codec->dapm_paths);
init_completion(&priv->ready);
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;
}
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;
} else {
if (gpio_is_valid(audpwron)) {
/* enable only codec ready interrupt */
twl6040_write_reg_cache(codec, TWL6040_REG_INTMR,
~TWL6040_READYMSK & TWL6040_ALLINT_MSK);
} else {
/* no interrupts at all */
twl6040_write_reg_cache(codec, TWL6040_REG_INTMR,
TWL6040_ALLINT_MSK);
}
}
/* init vio registers */
twl6040_init_vio_regs(codec);
/* power on device */
ret = twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
if (ret)
goto irq_err;
ret = snd_soc_register_codec(codec);
if (ret)
goto reg_err;
twl6040_codec = codec;
ret = snd_soc_register_dai(&twl6040_dai);
if (ret)
goto dai_err;
return 0;
dai_err:
snd_soc_unregister_codec(codec);
twl6040_codec = NULL;
reg_err:
twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
irq_err:
if (naudint)
free_irq(naudint, codec);
gpio2_err:
if (gpio_is_valid(audpwron))
gpio_free(audpwron);
gpio1_err:
kfree(codec->reg_cache);
cache_err:
kfree(priv);
return ret;
}
static int __devexit twl6040_codec_remove(struct platform_device *pdev)
{
struct twl6040_data *priv = snd_soc_codec_get_drvdata(twl6040_codec);
int audpwron = priv->audpwron;
int naudint = priv->naudint;
if (gpio_is_valid(audpwron))
gpio_free(audpwron);
if (naudint)
free_irq(naudint, twl6040_codec);
snd_soc_unregister_dai(&twl6040_dai);
snd_soc_unregister_codec(twl6040_codec);
kfree(twl6040_codec);
twl6040_codec = NULL;
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");
