// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Codec driver for ST STA32x 2.1-channel high-efficiency digital audio system
*
* Copyright: 2011 Raumfeld GmbH
* Author: Johannes Stezenbach <js@sig21.net>
*
* based on code from:
* Wolfson Microelectronics PLC.
* Mark Brown <broonie@opensource.wolfsonmicro.com>
* Freescale Semiconductor, Inc.
* Timur Tabi <timur@freescale.com>
*/
#define pr_fmt(fmt) KBUILD_MODNAME ":%s:%d: " fmt, __func__, __LINE__
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/of.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/workqueue.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 <sound/sta32x.h>
#include "sta32x.h"
#define STA32X_RATES (SNDRV_PCM_RATE_32000 | \
SNDRV_PCM_RATE_44100 | \
SNDRV_PCM_RATE_48000 | \
SNDRV_PCM_RATE_88200 | \
SNDRV_PCM_RATE_96000 | \
SNDRV_PCM_RATE_176400 | \
SNDRV_PCM_RATE_192000)
#define STA32X_FORMATS \
(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE | \
SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_3LE | \
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
/* Power-up register defaults */
static const struct reg_default sta32x_regs[] = {
{ 0x0, 0x63 },
{ 0x1, 0x80 },
{ 0x2, 0xc2 },
{ 0x3, 0x40 },
{ 0x4, 0xc2 },
{ 0x5, 0x5c },
{ 0x6, 0x10 },
{ 0x7, 0xff },
{ 0x8, 0x60 },
{ 0x9, 0x60 },
{ 0xa, 0x60 },
{ 0xb, 0x80 },
{ 0xc, 0x00 },
{ 0xd, 0x00 },
{ 0xe, 0x00 },
{ 0xf, 0x40 },
{ 0x10, 0x80 },
{ 0x11, 0x77 },
{ 0x12, 0x6a },
{ 0x13, 0x69 },
{ 0x14, 0x6a },
{ 0x15, 0x69 },
{ 0x16, 0x00 },
{ 0x17, 0x00 },
{ 0x18, 0x00 },
{ 0x19, 0x00 },
{ 0x1a, 0x00 },
{ 0x1b, 0x00 },
{ 0x1c, 0x00 },
{ 0x1d, 0x00 },
{ 0x1e, 0x00 },
{ 0x1f, 0x00 },
{ 0x20, 0x00 },
{ 0x21, 0x00 },
{ 0x22, 0x00 },
{ 0x23, 0x00 },
{ 0x24, 0x00 },
{ 0x25, 0x00 },
{ 0x26, 0x00 },
{ 0x27, 0x2d },
{ 0x28, 0xc0 },
{ 0x2b, 0x00 },
{ 0x2c, 0x0c },
};
static const struct regmap_range sta32x_write_regs_range[] = {
regmap_reg_range(STA32X_CONFA, STA32X_FDRC2),
};
static const struct regmap_range sta32x_read_regs_range[] = {
regmap_reg_range(STA32X_CONFA, STA32X_FDRC2),
};
static const struct regmap_range sta32x_volatile_regs_range[] = {
regmap_reg_range(STA32X_CFADDR2, STA32X_CFUD),
};
static const struct regmap_access_table sta32x_write_regs = {
.yes_ranges = sta32x_write_regs_range,
.n_yes_ranges = ARRAY_SIZE(sta32x_write_regs_range),
};
static const struct regmap_access_table sta32x_read_regs = {
.yes_ranges = sta32x_read_regs_range,
.n_yes_ranges = ARRAY_SIZE(sta32x_read_regs_range),
};
static const struct regmap_access_table sta32x_volatile_regs = {
.yes_ranges = sta32x_volatile_regs_range,
.n_yes_ranges = ARRAY_SIZE(sta32x_volatile_regs_range),
};
/* regulator power supply names */
static const char *sta32x_supply_names[] = {
"Vdda" , /* analog supply, 3.3VV */
"Vdd3" , /* digital supply, 3.3V */
"Vcc" /* power amp spply, 10V - 36V */
};
/* codec private data */
struct sta32x_priv {
struct regmap *regmap;
struct clk *xti_clk;
struct regulator_bulk_data supplies[ARRAY_SIZE(sta32x_supply_names)];
struct snd_soc_component *component;
struct sta32x_platform_data *pdata;
unsigned int mclk;
unsigned int format;
u32 coef_shadow[STA32X_COEF_COUNT];
struct delayed_work watchdog_work;
int shutdown;
struct gpio_desc *gpiod_nreset;
struct mutex coeff_lock;
};
static const DECLARE_TLV_DB_SCALE(mvol_tlv, -12700, 50, 1);
static const DECLARE_TLV_DB_SCALE(chvol_tlv, -7950, 50, 1);
static const DECLARE_TLV_DB_SCALE(tone_tlv, -120, 200, 0);
static const char *sta32x_drc_ac[] = {
"Anti-Clipping" , "Dynamic Range Compression" };
static const char *sta32x_auto_eq_mode[] = {
"User" , "Preset" , "Loudness" };
static const char *sta32x_auto_gc_mode[] = {
"User" , "AC no clipping" , "AC limited clipping (10%)" ,
"DRC nighttime listening mode" };
static const char *sta32x_auto_xo_mode[] = {
"User" , "80Hz" , "100Hz" , "120Hz" , "140Hz" , "160Hz" , "180Hz" , "200Hz" ,
"220Hz" , "240Hz" , "260Hz" , "280Hz" , "300Hz" , "320Hz" , "340Hz" , "360Hz" };
static const char *sta32x_preset_eq_mode[] = {
"Flat" , "Rock" , "Soft Rock" , "Jazz" , "Classical" , "Dance" , "Pop" , "Soft" ,
"Hard" , "Party" , "Vocal" , "Hip-Hop" , "Dialog" , "Bass-boost #1" ,
"Bass-boost #2" , "Bass-boost #3" , "Loudness 1" , "Loudness 2" ,
"Loudness 3" , "Loudness 4" , "Loudness 5" , "Loudness 6" , "Loudness 7" ,
"Loudness 8" , "Loudness 9" , "Loudness 10" , "Loudness 11" , "Loudness 12" ,
"Loudness 13" , "Loudness 14" , "Loudness 15" , "Loudness 16" };
static const char *sta32x_limiter_select[] = {
"Limiter Disabled" , "Limiter #1" , "Limiter #2" };
static const char *sta32x_limiter_attack_rate[] = {
"3.1584" , "2.7072" , "2.2560" , "1.8048" , "1.3536" , "0.9024" ,
"0.4512" , "0.2256" , "0.1504" , "0.1123" , "0.0902" , "0.0752" ,
"0.0645" , "0.0564" , "0.0501" , "0.0451" };
static const char *sta32x_limiter_release_rate[] = {
"0.5116" , "0.1370" , "0.0744" , "0.0499" , "0.0360" , "0.0299" ,
"0.0264" , "0.0208" , "0.0198" , "0.0172" , "0.0147" , "0.0137" ,
"0.0134" , "0.0117" , "0.0110" , "0.0104" };
static DECLARE_TLV_DB_RANGE(sta32x_limiter_ac_attack_tlv,
0, 7, TLV_DB_SCALE_ITEM(-1200, 200, 0),
8, 16, TLV_DB_SCALE_ITEM(300, 100, 0),
);
static DECLARE_TLV_DB_RANGE(sta32x_limiter_ac_release_tlv,
0, 0, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
1, 1, TLV_DB_SCALE_ITEM(-2900, 0, 0),
2, 2, TLV_DB_SCALE_ITEM(-2000, 0, 0),
3, 8, TLV_DB_SCALE_ITEM(-1400, 200, 0),
8, 16, TLV_DB_SCALE_ITEM(-700, 100, 0),
);
static DECLARE_TLV_DB_RANGE(sta32x_limiter_drc_attack_tlv,
0, 7, TLV_DB_SCALE_ITEM(-3100, 200, 0),
8, 13, TLV_DB_SCALE_ITEM(-1600, 100, 0),
14, 16, TLV_DB_SCALE_ITEM(-1000, 300, 0),
);
static DECLARE_TLV_DB_RANGE(sta32x_limiter_drc_release_tlv,
0, 0, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
1, 2, TLV_DB_SCALE_ITEM(-3800, 200, 0),
3, 4, TLV_DB_SCALE_ITEM(-3300, 200, 0),
5, 12, TLV_DB_SCALE_ITEM(-3000, 200, 0),
13, 16, TLV_DB_SCALE_ITEM(-1500, 300, 0),
);
static SOC_ENUM_SINGLE_DECL(sta32x_drc_ac_enum,
STA32X_CONFD, STA32X_CONFD_DRC_SHIFT,
sta32x_drc_ac);
static SOC_ENUM_SINGLE_DECL(sta32x_auto_eq_enum,
STA32X_AUTO1, STA32X_AUTO1_AMEQ_SHIFT,
sta32x_auto_eq_mode);
static SOC_ENUM_SINGLE_DECL(sta32x_auto_gc_enum,
STA32X_AUTO1, STA32X_AUTO1_AMGC_SHIFT,
sta32x_auto_gc_mode);
static SOC_ENUM_SINGLE_DECL(sta32x_auto_xo_enum,
STA32X_AUTO2, STA32X_AUTO2_XO_SHIFT,
sta32x_auto_xo_mode);
static SOC_ENUM_SINGLE_DECL(sta32x_preset_eq_enum,
STA32X_AUTO3, STA32X_AUTO3_PEQ_SHIFT,
sta32x_preset_eq_mode);
static SOC_ENUM_SINGLE_DECL(sta32x_limiter_ch1_enum,
STA32X_C1CFG, STA32X_CxCFG_LS_SHIFT,
sta32x_limiter_select);
static SOC_ENUM_SINGLE_DECL(sta32x_limiter_ch2_enum,
STA32X_C2CFG, STA32X_CxCFG_LS_SHIFT,
sta32x_limiter_select);
static SOC_ENUM_SINGLE_DECL(sta32x_limiter_ch3_enum,
STA32X_C3CFG, STA32X_CxCFG_LS_SHIFT,
sta32x_limiter_select);
static SOC_ENUM_SINGLE_DECL(sta32x_limiter1_attack_rate_enum,
STA32X_L1AR, STA32X_LxA_SHIFT,
sta32x_limiter_attack_rate);
static SOC_ENUM_SINGLE_DECL(sta32x_limiter2_attack_rate_enum,
STA32X_L2AR, STA32X_LxA_SHIFT,
sta32x_limiter_attack_rate);
static SOC_ENUM_SINGLE_DECL(sta32x_limiter1_release_rate_enum,
STA32X_L1AR, STA32X_LxR_SHIFT,
sta32x_limiter_release_rate);
static SOC_ENUM_SINGLE_DECL(sta32x_limiter2_release_rate_enum,
STA32X_L2AR, STA32X_LxR_SHIFT,
sta32x_limiter_release_rate);
/* byte array controls for setting biquad, mixer, scaling coefficients;
* for biquads all five coefficients need to be set in one go,
* mixer and pre/postscale coefs can be set individually;
* each coef is 24bit, the bytes are ordered in the same way
* as given in the STA32x data sheet (big endian; b1, b2, a1, a2, b0)
*/
static int sta32x_coefficient_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
int numcoef = kcontrol->private_value >> 16;
uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
uinfo->count = 3 * numcoef;
return 0;
}
static int sta32x_coefficient_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
int numcoef = kcontrol->private_value >> 16;
int index = kcontrol->private_value & 0xffff;
unsigned int cfud, val;
int i, ret = 0;
mutex_lock(&sta32x->coeff_lock);
/* preserve reserved bits in STA32X_CFUD */
regmap_read(sta32x->regmap, STA32X_CFUD, &cfud);
cfud &= 0xf0;
/*
* chip documentation does not say if the bits are self clearing,
* so do it explicitly
*/
regmap_write(sta32x->regmap, STA32X_CFUD, cfud);
regmap_write(sta32x->regmap, STA32X_CFADDR2, index);
if (numcoef == 1) {
regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x04);
} else if (numcoef == 5) {
regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x08);
} else {
ret = -EINVAL;
goto exit_unlock;
}
for (i = 0; i < 3 * numcoef; i++) {
regmap_read(sta32x->regmap, STA32X_B1CF1 + i, &val);
ucontrol->value.bytes.data[i] = val;
}
exit_unlock:
mutex_unlock(&sta32x->coeff_lock);
return ret;
}
static int sta32x_coefficient_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
int numcoef = kcontrol->private_value >> 16;
int index = kcontrol->private_value & 0xffff;
unsigned int cfud;
int i;
/* preserve reserved bits in STA32X_CFUD */
regmap_read(sta32x->regmap, STA32X_CFUD, &cfud);
cfud &= 0xf0;
/*
* chip documentation does not say if the bits are self clearing,
* so do it explicitly
*/
regmap_write(sta32x->regmap, STA32X_CFUD, cfud);
regmap_write(sta32x->regmap, STA32X_CFADDR2, index);
for (i = 0; i < numcoef && (index + i < STA32X_COEF_COUNT); i++)
sta32x->coef_shadow[index + i] =
(ucontrol->value.bytes.data[3 * i] << 16)
| (ucontrol->value.bytes.data[3 * i + 1] << 8)
| (ucontrol->value.bytes.data[3 * i + 2]);
for (i = 0; i < 3 * numcoef; i++)
regmap_write(sta32x->regmap, STA32X_B1CF1 + i,
ucontrol->value.bytes.data[i]);
if (numcoef == 1)
regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x01);
else if (numcoef == 5)
regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x02);
else
return -EINVAL;
return 0;
}
static int sta32x_sync_coef_shadow(struct snd_soc_component *component)
{
struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
unsigned int cfud;
int i;
/* preserve reserved bits in STA32X_CFUD */
regmap_read(sta32x->regmap, STA32X_CFUD, &cfud);
cfud &= 0xf0;
for (i = 0; i < STA32X_COEF_COUNT; i++) {
regmap_write(sta32x->regmap, STA32X_CFADDR2, i);
regmap_write(sta32x->regmap, STA32X_B1CF1,
(sta32x->coef_shadow[i] >> 16) & 0xff);
regmap_write(sta32x->regmap, STA32X_B1CF2,
(sta32x->coef_shadow[i] >> 8) & 0xff);
regmap_write(sta32x->regmap, STA32X_B1CF3,
(sta32x->coef_shadow[i]) & 0xff);
/*
* chip documentation does not say if the bits are
* self-clearing, so do it explicitly
*/
regmap_write(sta32x->regmap, STA32X_CFUD, cfud);
regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x01);
}
return 0;
}
static int sta32x_cache_sync(struct snd_soc_component *component)
{
struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
unsigned int mute;
int rc;
/* mute during register sync */
regmap_read(sta32x->regmap, STA32X_MMUTE, &mute);
regmap_write(sta32x->regmap, STA32X_MMUTE, mute | STA32X_MMUTE_MMUTE);
sta32x_sync_coef_shadow(component);
rc = regcache_sync(sta32x->regmap);
regmap_write(sta32x->regmap, STA32X_MMUTE, mute);
return rc;
}
/* work around ESD issue where sta32x resets and loses all configuration */
static void sta32x_watchdog(struct work_struct *work)
{
struct sta32x_priv *sta32x = container_of(work, struct sta32x_priv,
watchdog_work.work);
struct snd_soc_component *component = sta32x->component;
unsigned int confa, confa_cached;
/* check if sta32x has reset itself */
confa_cached = snd_soc_component_read(component, STA32X_CONFA);
regcache_cache_bypass(sta32x->regmap, true );
confa = snd_soc_component_read(component, STA32X_CONFA);
regcache_cache_bypass(sta32x->regmap, false );
if (confa != confa_cached) {
regcache_mark_dirty(sta32x->regmap);
sta32x_cache_sync(component);
}
if (!sta32x->shutdown)
queue_delayed_work(system_power_efficient_wq,
&sta32x->watchdog_work,
round_jiffies_relative(HZ));
}
static void sta32x_watchdog_start(struct sta32x_priv *sta32x)
{
if (sta32x->pdata->needs_esd_watchdog) {
sta32x->shutdown = 0;
queue_delayed_work(system_power_efficient_wq,
&sta32x->watchdog_work,
round_jiffies_relative(HZ));
}
}
static void sta32x_watchdog_stop(struct sta32x_priv *sta32x)
{
if (sta32x->pdata->needs_esd_watchdog) {
sta32x->shutdown = 1;
cancel_delayed_work_sync(&sta32x->watchdog_work);
}
}
#define SINGLE_COEF(xname, index) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
.info = sta32x_coefficient_info, \
.get = sta32x_coefficient_get,\
.put = sta32x_coefficient_put, \
.private_value = index | (1 << 16) }
#define BIQUAD_COEFS(xname, index) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
.info = sta32x_coefficient_info, \
.get = sta32x_coefficient_get,\
.put = sta32x_coefficient_put, \
.private_value = index | (5 << 16) }
static const struct snd_kcontrol_new sta32x_snd_controls[] = {
SOC_SINGLE_TLV("Master Volume" , STA32X_MVOL, 0, 0xff, 1, mvol_tlv),
SOC_SINGLE("Master Switch" , STA32X_MMUTE, 0, 1, 1),
SOC_SINGLE("Ch1 Switch" , STA32X_MMUTE, 1, 1, 1),
SOC_SINGLE("Ch2 Switch" , STA32X_MMUTE, 2, 1, 1),
SOC_SINGLE("Ch3 Switch" , STA32X_MMUTE, 3, 1, 1),
SOC_SINGLE_TLV("Ch1 Volume" , STA32X_C1VOL, 0, 0xff, 1, chvol_tlv),
SOC_SINGLE_TLV("Ch2 Volume" , STA32X_C2VOL, 0, 0xff, 1, chvol_tlv),
SOC_SINGLE_TLV("Ch3 Volume" , STA32X_C3VOL, 0, 0xff, 1, chvol_tlv),
SOC_SINGLE("De-emphasis Filter Switch" , STA32X_CONFD, STA32X_CONFD_DEMP_SHIFT, 1, 0),
SOC_ENUM("Compressor/Limiter Switch" , sta32x_drc_ac_enum),
SOC_SINGLE("Miami Mode Switch" , STA32X_CONFD, STA32X_CONFD_MME_SHIFT, 1, 0),
SOC_SINGLE("Zero Cross Switch" , STA32X_CONFE, STA32X_CONFE_ZCE_SHIFT, 1, 0),
SOC_SINGLE("Soft Ramp Switch" , STA32X_CONFE, STA32X_CONFE_SVE_SHIFT, 1, 0),
SOC_SINGLE("Auto-Mute Switch" , STA32X_CONFF, STA32X_CONFF_IDE_SHIFT, 1, 0),
SOC_ENUM("Automode EQ" , sta32x_auto_eq_enum),
SOC_ENUM("Automode GC" , sta32x_auto_gc_enum),
SOC_ENUM("Automode XO" , sta32x_auto_xo_enum),
SOC_ENUM("Preset EQ" , sta32x_preset_eq_enum),
SOC_SINGLE("Ch1 Tone Control Bypass Switch" , STA32X_C1CFG, STA32X_CxCFG_TCB_SHIFT, 1, 0),
SOC_SINGLE("Ch2 Tone Control Bypass Switch" , STA32X_C2CFG, STA32X_CxCFG_TCB_SHIFT, 1, 0),
SOC_SINGLE("Ch1 EQ Bypass Switch" , STA32X_C1CFG, STA32X_CxCFG_EQBP_SHIFT, 1, 0),
SOC_SINGLE("Ch2 EQ Bypass Switch" , STA32X_C2CFG, STA32X_CxCFG_EQBP_SHIFT, 1, 0),
SOC_SINGLE("Ch1 Master Volume Bypass Switch" , STA32X_C1CFG, STA32X_CxCFG_VBP_SHIFT, 1, 0),
SOC_SINGLE("Ch2 Master Volume Bypass Switch" , STA32X_C1CFG, STA32X_CxCFG_VBP_SHIFT, 1, 0),
SOC_SINGLE("Ch3 Master Volume Bypass Switch" , STA32X_C1CFG, STA32X_CxCFG_VBP_SHIFT, 1, 0),
SOC_ENUM("Ch1 Limiter Select" , sta32x_limiter_ch1_enum),
SOC_ENUM("Ch2 Limiter Select" , sta32x_limiter_ch2_enum),
SOC_ENUM("Ch3 Limiter Select" , sta32x_limiter_ch3_enum),
SOC_SINGLE_TLV("Bass Tone Control" , STA32X_TONE, STA32X_TONE_BTC_SHIFT, 15, 0, tone_tlv),
SOC_SINGLE_TLV("Treble Tone Control" , STA32X_TONE, STA32X_TONE_TTC_SHIFT, 15, 0, tone_tlv),
SOC_ENUM("Limiter1 Attack Rate (dB/ms)" , sta32x_limiter1_attack_rate_enum),
SOC_ENUM("Limiter2 Attack Rate (dB/ms)" , sta32x_limiter2_attack_rate_enum),
SOC_ENUM("Limiter1 Release Rate (dB/ms)" , sta32x_limiter1_release_rate_enum),
SOC_ENUM("Limiter2 Release Rate (dB/ms)" , sta32x_limiter2_release_rate_enum),
/* depending on mode, the attack/release thresholds have
* two different enum definitions; provide both
*/
SOC_SINGLE_TLV("Limiter1 Attack Threshold (AC Mode)" , STA32X_L1ATRT, STA32X_LxA_SHIFT,
16, 0, sta32x_limiter_ac_attack_tlv),
SOC_SINGLE_TLV("Limiter2 Attack Threshold (AC Mode)" , STA32X_L2ATRT, STA32X_LxA_SHIFT,
16, 0, sta32x_limiter_ac_attack_tlv),
SOC_SINGLE_TLV("Limiter1 Release Threshold (AC Mode)" , STA32X_L1ATRT, STA32X_LxR_SHIFT,
16, 0, sta32x_limiter_ac_release_tlv),
SOC_SINGLE_TLV("Limiter2 Release Threshold (AC Mode)" , STA32X_L2ATRT, STA32X_LxR_SHIFT,
16, 0, sta32x_limiter_ac_release_tlv),
SOC_SINGLE_TLV("Limiter1 Attack Threshold (DRC Mode)" , STA32X_L1ATRT, STA32X_LxA_SHIFT,
16, 0, sta32x_limiter_drc_attack_tlv),
SOC_SINGLE_TLV("Limiter2 Attack Threshold (DRC Mode)" , STA32X_L2ATRT, STA32X_LxA_SHIFT,
16, 0, sta32x_limiter_drc_attack_tlv),
SOC_SINGLE_TLV("Limiter1 Release Threshold (DRC Mode)" , STA32X_L1ATRT, STA32X_LxR_SHIFT,
16, 0, sta32x_limiter_drc_release_tlv),
SOC_SINGLE_TLV("Limiter2 Release Threshold (DRC Mode)" , STA32X_L2ATRT, STA32X_LxR_SHIFT,
16, 0, sta32x_limiter_drc_release_tlv),
BIQUAD_COEFS("Ch1 - Biquad 1" , 0),
BIQUAD_COEFS("Ch1 - Biquad 2" , 5),
BIQUAD_COEFS("Ch1 - Biquad 3" , 10),
BIQUAD_COEFS("Ch1 - Biquad 4" , 15),
BIQUAD_COEFS("Ch2 - Biquad 1" , 20),
BIQUAD_COEFS("Ch2 - Biquad 2" , 25),
BIQUAD_COEFS("Ch2 - Biquad 3" , 30),
BIQUAD_COEFS("Ch2 - Biquad 4" , 35),
BIQUAD_COEFS("High-pass" , 40),
BIQUAD_COEFS("Low-pass" , 45),
SINGLE_COEF("Ch1 - Prescale" , 50),
SINGLE_COEF("Ch2 - Prescale" , 51),
SINGLE_COEF("Ch1 - Postscale" , 52),
SINGLE_COEF("Ch2 - Postscale" , 53),
SINGLE_COEF("Ch3 - Postscale" , 54),
SINGLE_COEF("Thermal warning - Postscale" , 55),
SINGLE_COEF("Ch1 - Mix 1" , 56),
SINGLE_COEF("Ch1 - Mix 2" , 57),
SINGLE_COEF("Ch2 - Mix 1" , 58),
SINGLE_COEF("Ch2 - Mix 2" , 59),
SINGLE_COEF("Ch3 - Mix 1" , 60),
SINGLE_COEF("Ch3 - Mix 2" , 61),
};
static const struct snd_soc_dapm_widget sta32x_dapm_widgets[] = {
SND_SOC_DAPM_DAC("DAC" , "Playback" , SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_OUTPUT("LEFT" ),
SND_SOC_DAPM_OUTPUT("RIGHT" ),
SND_SOC_DAPM_OUTPUT("SUB" ),
};
static const struct snd_soc_dapm_route sta32x_dapm_routes[] = {
{ "LEFT" , NULL, "DAC" },
{ "RIGHT" , NULL, "DAC" },
{ "SUB" , NULL, "DAC" },
};
/* MCLK interpolation ratio per fs */
static struct {
int fs;
int ir;
} interpolation_ratios[] = {
{ 32000, 0 },
{ 44100, 0 },
{ 48000, 0 },
{ 88200, 1 },
{ 96000, 1 },
{ 176400, 2 },
{ 192000, 2 },
};
/* MCLK to fs clock ratios */
static int mcs_ratio_table[3][7] = {
{ 768, 512, 384, 256, 128, 576, 0 },
{ 384, 256, 192, 128, 64, 0 },
{ 384, 256, 192, 128, 64, 0 },
};
/**
* sta32x_set_dai_sysclk - configure MCLK
* @codec_dai: the codec DAI
* @clk_id: the clock ID (ignored)
* @freq: the MCLK input frequency
* @dir: the clock direction (ignored)
*
* The value of MCLK is used to determine which sample rates are supported
* by the STA32X, based on the mclk_ratios table.
*
* This function must be called by the machine driver's 'startup' function,
* otherwise the list of supported sample rates will not be available in
* time for ALSA.
*
* For setups with variable MCLKs, pass 0 as 'freq' argument. This will cause
* theoretically possible sample rates to be enabled. Call it again with a
* proper value set one the external clock is set (most probably you would do
* that from a machine's driver 'hw_param' hook.
*/
static int sta32x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_component *component = codec_dai->component;
struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
dev_dbg(component->dev, "mclk=%u\n" , freq);
sta32x->mclk = freq;
return 0;
}
/**
* sta32x_set_dai_fmt - configure the codec for the selected audio format
* @codec_dai: the codec DAI
* @fmt: a SND_SOC_DAIFMT_x value indicating the data format
*
* This function takes a bitmask of SND_SOC_DAIFMT_x bits and programs the
* codec accordingly.
*/
static int sta32x_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_component *component = codec_dai->component;
struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
u8 confb = 0;
switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
case SND_SOC_DAIFMT_CBC_CFC:
break ;
default :
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
case SND_SOC_DAIFMT_RIGHT_J:
case SND_SOC_DAIFMT_LEFT_J:
sta32x->format = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
break ;
default :
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
confb |= STA32X_CONFB_C2IM;
break ;
case SND_SOC_DAIFMT_NB_IF:
confb |= STA32X_CONFB_C1IM;
break ;
default :
return -EINVAL;
}
return regmap_update_bits(sta32x->regmap, STA32X_CONFB,
STA32X_CONFB_C1IM | STA32X_CONFB_C2IM, confb);
}
/**
* sta32x_hw_params - program the STA32X with the given hardware parameters.
* @substream: the audio stream
* @params: the hardware parameters to set
* @dai: the SOC DAI (ignored)
*
* This function programs the hardware with the values provided.
* Specifically, the sample rate and the data format.
*/
static int sta32x_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
int i, mcs = -EINVAL, ir = -EINVAL;
unsigned int confa, confb;
unsigned int rate, ratio;
int ret;
if (!sta32x->mclk) {
dev_err(component->dev,
"sta32x->mclk is unset. Unable to determine ratio\n" );
return -EIO;
}
rate = params_rate(params);
ratio = sta32x->mclk / rate;
dev_dbg(component->dev, "rate: %u, ratio: %u\n" , rate, ratio);
for (i = 0; i < ARRAY_SIZE(interpolation_ratios); i++) {
if (interpolation_ratios[i].fs == rate) {
ir = interpolation_ratios[i].ir;
break ;
}
}
if (ir < 0) {
dev_err(component->dev, "Unsupported samplerate: %u\n" , rate);
return -EINVAL;
}
for (i = 0; i < 6; i++) {
if (mcs_ratio_table[ir][i] == ratio) {
mcs = i;
break ;
}
}
if (mcs < 0) {
dev_err(component->dev, "Unresolvable ratio: %u\n" , ratio);
return -EINVAL;
}
confa = (ir << STA32X_CONFA_IR_SHIFT) |
(mcs << STA32X_CONFA_MCS_SHIFT);
confb = 0;
switch (params_width(params)) {
case 24:
dev_dbg(component->dev, "24bit\n" );
fallthrough;
case 32:
dev_dbg(component->dev, "24bit or 32bit\n" );
switch (sta32x->format) {
case SND_SOC_DAIFMT_I2S:
confb |= 0x0;
break ;
case SND_SOC_DAIFMT_LEFT_J:
confb |= 0x1;
break ;
case SND_SOC_DAIFMT_RIGHT_J:
confb |= 0x2;
break ;
}
break ;
case 20:
dev_dbg(component->dev, "20bit\n" );
switch (sta32x->format) {
case SND_SOC_DAIFMT_I2S:
confb |= 0x4;
break ;
case SND_SOC_DAIFMT_LEFT_J:
confb |= 0x5;
break ;
case SND_SOC_DAIFMT_RIGHT_J:
confb |= 0x6;
break ;
}
break ;
case 18:
dev_dbg(component->dev, "18bit\n" );
switch (sta32x->format) {
case SND_SOC_DAIFMT_I2S:
confb |= 0x8;
break ;
case SND_SOC_DAIFMT_LEFT_J:
confb |= 0x9;
break ;
case SND_SOC_DAIFMT_RIGHT_J:
confb |= 0xa;
break ;
}
break ;
case 16:
dev_dbg(component->dev, "16bit\n" );
switch (sta32x->format) {
case SND_SOC_DAIFMT_I2S:
confb |= 0x0;
break ;
case SND_SOC_DAIFMT_LEFT_J:
confb |= 0xd;
break ;
case SND_SOC_DAIFMT_RIGHT_J:
confb |= 0xe;
break ;
}
break ;
default :
return -EINVAL;
}
ret = regmap_update_bits(sta32x->regmap, STA32X_CONFA,
STA32X_CONFA_MCS_MASK | STA32X_CONFA_IR_MASK,
confa);
if (ret < 0)
return ret;
ret = regmap_update_bits(sta32x->regmap, STA32X_CONFB,
STA32X_CONFB_SAI_MASK | STA32X_CONFB_SAIFB,
confb);
if (ret < 0)
return ret;
return 0;
}
static int sta32x_startup_sequence(struct sta32x_priv *sta32x)
{
if (sta32x->gpiod_nreset) {
gpiod_set_value(sta32x->gpiod_nreset, 0);
mdelay(1);
gpiod_set_value(sta32x->gpiod_nreset, 1);
mdelay(1);
}
return 0;
}
/**
* sta32x_set_bias_level - DAPM callback
* @component: the component device
* @level: DAPM power level
*
* This is called by ALSA to put the component into low power mode
* or to wake it up. If the component is powered off completely
* all registers must be restored after power on.
*/
static int sta32x_set_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level)
{
int ret;
struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
dev_dbg(component->dev, "level = %d\n" , level);
switch (level) {
case SND_SOC_BIAS_ON:
break ;
case SND_SOC_BIAS_PREPARE:
/* Full power on */
regmap_update_bits(sta32x->regmap, STA32X_CONFF,
STA32X_CONFF_PWDN | STA32X_CONFF_EAPD,
STA32X_CONFF_PWDN | STA32X_CONFF_EAPD);
break ;
case SND_SOC_BIAS_STANDBY:
if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
ret = regulator_bulk_enable(ARRAY_SIZE(sta32x->supplies),
sta32x->supplies);
if (ret != 0) {
dev_err(component->dev,
"Failed to enable supplies: %d\n" , ret);
return ret;
}
sta32x_startup_sequence(sta32x);
sta32x_cache_sync(component);
sta32x_watchdog_start(sta32x);
}
/* Power down */
regmap_update_bits(sta32x->regmap, STA32X_CONFF,
STA32X_CONFF_PWDN | STA32X_CONFF_EAPD,
0);
break ;
case SND_SOC_BIAS_OFF:
/* The chip runs through the power down sequence for us. */
regmap_update_bits(sta32x->regmap, STA32X_CONFF,
STA32X_CONFF_PWDN | STA32X_CONFF_EAPD, 0);
msleep(300);
sta32x_watchdog_stop(sta32x);
gpiod_set_value(sta32x->gpiod_nreset, 0);
regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies),
sta32x->supplies);
break ;
}
return 0;
}
static const struct snd_soc_dai_ops sta32x_dai_ops = {
.hw_params = sta32x_hw_params,
.set_sysclk = sta32x_set_dai_sysclk,
.set_fmt = sta32x_set_dai_fmt,
};
static struct snd_soc_dai_driver sta32x_dai = {
.name = "sta32x-hifi" ,
.playback = {
.stream_name = "Playback" ,
.channels_min = 2,
.channels_max = 2,
.rates = STA32X_RATES,
.formats = STA32X_FORMATS,
},
.ops = &sta32x_dai_ops,
};
static int sta32x_probe(struct snd_soc_component *component)
{
struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
struct sta32x_platform_data *pdata = sta32x->pdata;
int i, ret = 0, thermal = 0;
sta32x->component = component;
if (sta32x->xti_clk) {
ret = clk_prepare_enable(sta32x->xti_clk);
if (ret != 0) {
dev_err(component->dev,
"Failed to enable clock: %d\n" , ret);
return ret;
}
}
ret = regulator_bulk_enable(ARRAY_SIZE(sta32x->supplies),
sta32x->supplies);
if (ret != 0) {
dev_err(component->dev, "Failed to enable supplies: %d\n" , ret);
goto err_clk_disable_unprepare;
}
ret = sta32x_startup_sequence(sta32x);
if (ret < 0) {
dev_err(component->dev, "Failed to startup device\n" );
goto err_regulator_bulk_disable;
}
/* CONFA */
if (!pdata->thermal_warning_recovery)
thermal |= STA32X_CONFA_TWAB;
if (!pdata->thermal_warning_adjustment)
thermal |= STA32X_CONFA_TWRB;
if (!pdata->fault_detect_recovery)
thermal |= STA32X_CONFA_FDRB;
regmap_update_bits(sta32x->regmap, STA32X_CONFA,
STA32X_CONFA_TWAB | STA32X_CONFA_TWRB |
STA32X_CONFA_FDRB,
thermal);
/* CONFC */
regmap_update_bits(sta32x->regmap, STA32X_CONFC,
STA32X_CONFC_CSZ_MASK,
pdata->drop_compensation_ns
<< STA32X_CONFC_CSZ_SHIFT);
/* CONFE */
regmap_update_bits(sta32x->regmap, STA32X_CONFE,
STA32X_CONFE_MPCV,
pdata->max_power_use_mpcc ?
STA32X_CONFE_MPCV : 0);
regmap_update_bits(sta32x->regmap, STA32X_CONFE,
STA32X_CONFE_MPC,
pdata->max_power_correction ?
STA32X_CONFE_MPC : 0);
regmap_update_bits(sta32x->regmap, STA32X_CONFE,
STA32X_CONFE_AME,
pdata->am_reduction_mode ?
STA32X_CONFE_AME : 0);
regmap_update_bits(sta32x->regmap, STA32X_CONFE,
STA32X_CONFE_PWMS,
pdata->odd_pwm_speed_mode ?
STA32X_CONFE_PWMS : 0);
/* CONFF */
regmap_update_bits(sta32x->regmap, STA32X_CONFF,
STA32X_CONFF_IDE,
pdata->invalid_input_detect_mute ?
STA32X_CONFF_IDE : 0);
/* select output configuration */
regmap_update_bits(sta32x->regmap, STA32X_CONFF,
STA32X_CONFF_OCFG_MASK,
pdata->output_conf
<< STA32X_CONFF_OCFG_SHIFT);
/* channel to output mapping */
regmap_update_bits(sta32x->regmap, STA32X_C1CFG,
STA32X_CxCFG_OM_MASK,
pdata->ch1_output_mapping
<< STA32X_CxCFG_OM_SHIFT);
regmap_update_bits(sta32x->regmap, STA32X_C2CFG,
STA32X_CxCFG_OM_MASK,
pdata->ch2_output_mapping
<< STA32X_CxCFG_OM_SHIFT);
regmap_update_bits(sta32x->regmap, STA32X_C3CFG,
STA32X_CxCFG_OM_MASK,
pdata->ch3_output_mapping
<< STA32X_CxCFG_OM_SHIFT);
/* initialize coefficient shadow RAM with reset values */
for (i = 4; i <= 49; i += 5)
sta32x->coef_shadow[i] = 0x400000;
for (i = 50; i <= 54; i++)
sta32x->coef_shadow[i] = 0x7fffff;
sta32x->coef_shadow[55] = 0x5a9df7;
sta32x->coef_shadow[56] = 0x7fffff;
sta32x->coef_shadow[59] = 0x7fffff;
sta32x->coef_shadow[60] = 0x400000;
sta32x->coef_shadow[61] = 0x400000;
if (sta32x->pdata->needs_esd_watchdog)
INIT_DELAYED_WORK(&sta32x->watchdog_work, sta32x_watchdog);
snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY);
/* Bias level configuration will have done an extra enable */
regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies);
return 0;
err_regulator_bulk_disable:
regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies);
err_clk_disable_unprepare:
clk_disable_unprepare(sta32x->xti_clk);
return ret;
}
static void sta32x_remove(struct snd_soc_component *component)
{
struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component);
sta32x_watchdog_stop(sta32x);
regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies);
clk_disable_unprepare(sta32x->xti_clk);
}
static const struct snd_soc_component_driver sta32x_component = {
.probe = sta32x_probe,
.remove = sta32x_remove,
.set_bias_level = sta32x_set_bias_level,
.controls = sta32x_snd_controls,
.num_controls = ARRAY_SIZE(sta32x_snd_controls),
.dapm_widgets = sta32x_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(sta32x_dapm_widgets),
.dapm_routes = sta32x_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(sta32x_dapm_routes),
.suspend_bias_off = 1,
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
};
static const struct regmap_config sta32x_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = STA32X_FDRC2,
.reg_defaults = sta32x_regs,
.num_reg_defaults = ARRAY_SIZE(sta32x_regs),
.cache_type = REGCACHE_MAPLE,
.wr_table = &sta32x_write_regs,
.rd_table = &sta32x_read_regs,
.volatile_table = &sta32x_volatile_regs,
};
#ifdef CONFIG_OF
static const struct of_device_id st32x_dt_ids[] = {
{ .compatible = "st,sta32x" , },
{ }
};
MODULE_DEVICE_TABLE(of, st32x_dt_ids);
static int sta32x_probe_dt(struct device *dev, struct sta32x_priv *sta32x)
{
struct device_node *np = dev->of_node;
struct sta32x_platform_data *pdata;
u16 tmp;
pdata = devm_kzalloc(dev, sizeof (*pdata), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
of_property_read_u8(np, "st,output-conf" ,
&pdata->output_conf);
of_property_read_u8(np, "st,ch1-output-mapping" ,
&pdata->ch1_output_mapping);
of_property_read_u8(np, "st,ch2-output-mapping" ,
&pdata->ch2_output_mapping);
of_property_read_u8(np, "st,ch3-output-mapping" ,
&pdata->ch3_output_mapping);
pdata->fault_detect_recovery =
of_property_read_bool(np, "st,fault-detect-recovery" );
pdata->thermal_warning_recovery =
of_property_read_bool(np, "st,thermal-warning-recovery" );
pdata->thermal_warning_adjustment =
of_property_read_bool(np, "st,thermal-warning-adjustment" );
pdata->needs_esd_watchdog =
of_property_read_bool(np, "st,needs_esd_watchdog" );
tmp = 140;
of_property_read_u16(np, "st,drop-compensation-ns" , &tmp);
pdata->drop_compensation_ns = clamp_t(u16, tmp, 0, 300) / 20;
/* CONFE */
pdata->max_power_use_mpcc =
of_property_read_bool(np, "st,max-power-use-mpcc" );
pdata->max_power_correction =
of_property_read_bool(np, "st,max-power-correction" );
pdata->am_reduction_mode =
of_property_read_bool(np, "st,am-reduction-mode" );
pdata->odd_pwm_speed_mode =
of_property_read_bool(np, "st,odd-pwm-speed-mode" );
/* CONFF */
pdata->invalid_input_detect_mute =
of_property_read_bool(np, "st,invalid-input-detect-mute" );
sta32x->pdata = pdata;
return 0;
}
#endif
static int sta32x_i2c_probe(struct i2c_client *i2c)
{
struct device *dev = &i2c->dev;
struct sta32x_priv *sta32x;
int ret, i;
sta32x = devm_kzalloc(&i2c->dev, sizeof (struct sta32x_priv),
GFP_KERNEL);
if (!sta32x)
return -ENOMEM;
mutex_init(&sta32x->coeff_lock);
sta32x->pdata = dev_get_platdata(dev);
#ifdef CONFIG_OF
if (dev->of_node) {
ret = sta32x_probe_dt(dev, sta32x);
if (ret < 0)
return ret;
}
#endif
/* Clock */
sta32x->xti_clk = devm_clk_get(dev, "xti" );
if (IS_ERR(sta32x->xti_clk)) {
ret = PTR_ERR(sta32x->xti_clk);
if (ret == -EPROBE_DEFER)
return ret;
sta32x->xti_clk = NULL;
}
/* GPIOs */
sta32x->gpiod_nreset = devm_gpiod_get_optional(dev, "reset" ,
GPIOD_OUT_LOW);
if (IS_ERR(sta32x->gpiod_nreset))
return PTR_ERR(sta32x->gpiod_nreset);
/* regulators */
for (i = 0; i < ARRAY_SIZE(sta32x->supplies); i++)
sta32x->supplies[i].supply = sta32x_supply_names[i];
ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(sta32x->supplies),
sta32x->supplies);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to request supplies: %d\n" , ret);
return ret;
}
sta32x->regmap = devm_regmap_init_i2c(i2c, &sta32x_regmap);
if (IS_ERR(sta32x->regmap)) {
ret = PTR_ERR(sta32x->regmap);
dev_err(dev, "Failed to init regmap: %d\n" , ret);
return ret;
}
i2c_set_clientdata(i2c, sta32x);
ret = devm_snd_soc_register_component(dev, &sta32x_component,
&sta32x_dai, 1);
if (ret < 0)
dev_err(dev, "Failed to register component (%d)\n" , ret);
return ret;
}
static const struct i2c_device_id sta32x_i2c_id[] = {
{ "sta326" },
{ "sta328" },
{ "sta329" },
{ }
};
MODULE_DEVICE_TABLE(i2c, sta32x_i2c_id);
static struct i2c_driver sta32x_i2c_driver = {
.driver = {
.name = "sta32x" ,
.of_match_table = of_match_ptr(st32x_dt_ids),
},
.probe = sta32x_i2c_probe,
.id_table = sta32x_i2c_id,
};
module_i2c_driver(sta32x_i2c_driver);
MODULE_DESCRIPTION("ASoC STA32X driver" );
MODULE_AUTHOR("Johannes Stezenbach " );
MODULE_LICENSE("GPL" );
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