diff options
Diffstat (limited to 'sound/soc/codecs/sta32x.c')
| -rw-r--r-- | sound/soc/codecs/sta32x.c | 1186 |
1 files changed, 1186 insertions, 0 deletions
diff --git a/sound/soc/codecs/sta32x.c b/sound/soc/codecs/sta32x.c new file mode 100644 index 000000000..86528b930 --- /dev/null +++ b/sound/soc/codecs/sta32x.c @@ -0,0 +1,1186 @@ +// 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_device.h> +#include <linux/of_gpio.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_S16_BE | \ + SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \ + SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \ + SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE | \ + SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE | \ + SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE) + +/* 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_MASTER_MASK) { + case SND_SOC_DAIFMT_CBS_CFS: + 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: + if (sta32x->xti_clk) + 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); + + if (sta32x->xti_clk) + 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, + .non_legacy_dai_naming = 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_RBTREE, + .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); + + if (of_get_property(np, "st,fault-detect-recovery", NULL)) + pdata->fault_detect_recovery = 1; + if (of_get_property(np, "st,thermal-warning-recovery", NULL)) + pdata->thermal_warning_recovery = 1; + if (of_get_property(np, "st,thermal-warning-adjustment", NULL)) + pdata->thermal_warning_adjustment = 1; + if (of_get_property(np, "st,needs_esd_watchdog", NULL)) + pdata->needs_esd_watchdog = 1; + + tmp = 140; + of_property_read_u16(np, "st,drop-compensation-ns", &tmp); + pdata->drop_compensation_ns = clamp_t(u16, tmp, 0, 300) / 20; + + /* CONFE */ + if (of_get_property(np, "st,max-power-use-mpcc", NULL)) + pdata->max_power_use_mpcc = 1; + + if (of_get_property(np, "st,max-power-correction", NULL)) + pdata->max_power_correction = 1; + + if (of_get_property(np, "st,am-reduction-mode", NULL)) + pdata->am_reduction_mode = 1; + + if (of_get_property(np, "st,odd-pwm-speed-mode", NULL)) + pdata->odd_pwm_speed_mode = 1; + + /* CONFF */ + if (of_get_property(np, "st,invalid-input-detect-mute", NULL)) + pdata->invalid_input_detect_mute = 1; + + sta32x->pdata = pdata; + + return 0; +} +#endif + +static int sta32x_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + 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", 0 }, + { "sta328", 0 }, + { "sta329", 0 }, + { } +}; +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 <js@sig21.net>"); +MODULE_LICENSE("GPL"); |