--- /dev/null
+/*
+ * Codec driver for ST STA350 2.1-channel high-efficiency digital audio system
+ *
+ * Copyright: 2014 Raumfeld GmbH
+ * Author: Sven Brandau <info@brandau.biz>
+ *
+ * based on code from:
+ * Raumfeld GmbH
+ * Johannes Stezenbach <js@sig21.net>
+ * Wolfson Microelectronics PLC.
+ * Mark Brown <broonie@opensource.wolfsonmicro.com>
+ * Freescale Semiconductor, Inc.
+ * Timur Tabi <timur@freescale.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#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/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 <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/sta350.h>
+#include "sta350.h"
+
+#define STA350_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 STA350_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 sta350_regs[] = {
+ { 0x0, 0x63 },
+ { 0x1, 0x80 },
+ { 0x2, 0xdf },
+ { 0x3, 0x40 },
+ { 0x4, 0xc2 },
+ { 0x5, 0x5c },
+ { 0x6, 0x00 },
+ { 0x7, 0xff },
+ { 0x8, 0x60 },
+ { 0x9, 0x60 },
+ { 0xa, 0x60 },
+ { 0xb, 0x00 },
+ { 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, 0x2a },
+ { 0x28, 0xc0 },
+ { 0x29, 0xf3 },
+ { 0x2a, 0x33 },
+ { 0x2b, 0x00 },
+ { 0x2c, 0x0c },
+ { 0x31, 0x00 },
+ { 0x36, 0x00 },
+ { 0x37, 0x00 },
+ { 0x38, 0x00 },
+ { 0x39, 0x01 },
+ { 0x3a, 0xee },
+ { 0x3b, 0xff },
+ { 0x3c, 0x7e },
+ { 0x3d, 0xc0 },
+ { 0x3e, 0x26 },
+ { 0x3f, 0x00 },
+ { 0x48, 0x00 },
+ { 0x49, 0x00 },
+ { 0x4a, 0x00 },
+ { 0x4b, 0x04 },
+ { 0x4c, 0x00 },
+};
+
+static const struct regmap_range sta350_write_regs_range[] = {
+ regmap_reg_range(STA350_CONFA, STA350_AUTO2),
+ regmap_reg_range(STA350_C1CFG, STA350_FDRC2),
+ regmap_reg_range(STA350_EQCFG, STA350_EVOLRES),
+ regmap_reg_range(STA350_NSHAPE, STA350_MISC2),
+};
+
+static const struct regmap_range sta350_read_regs_range[] = {
+ regmap_reg_range(STA350_CONFA, STA350_AUTO2),
+ regmap_reg_range(STA350_C1CFG, STA350_STATUS),
+ regmap_reg_range(STA350_EQCFG, STA350_EVOLRES),
+ regmap_reg_range(STA350_NSHAPE, STA350_MISC2),
+};
+
+static const struct regmap_range sta350_volatile_regs_range[] = {
+ regmap_reg_range(STA350_CFADDR2, STA350_CFUD),
+ regmap_reg_range(STA350_STATUS, STA350_STATUS),
+};
+
+static const struct regmap_access_table sta350_write_regs = {
+ .yes_ranges = sta350_write_regs_range,
+ .n_yes_ranges = ARRAY_SIZE(sta350_write_regs_range),
+};
+
+static const struct regmap_access_table sta350_read_regs = {
+ .yes_ranges = sta350_read_regs_range,
+ .n_yes_ranges = ARRAY_SIZE(sta350_read_regs_range),
+};
+
+static const struct regmap_access_table sta350_volatile_regs = {
+ .yes_ranges = sta350_volatile_regs_range,
+ .n_yes_ranges = ARRAY_SIZE(sta350_volatile_regs_range),
+};
+
+/* regulator power supply names */
+static const char * const sta350_supply_names[] = {
+ "vdd-dig", /* digital supply, 3.3V */
+ "vdd-pll", /* pll supply, 3.3V */
+ "vcc" /* power amp supply, 5V - 26V */
+};
+
+/* codec private data */
+struct sta350_priv {
+ struct regmap *regmap;
+ struct regulator_bulk_data supplies[ARRAY_SIZE(sta350_supply_names)];
+ struct sta350_platform_data *pdata;
+
+ unsigned int mclk;
+ unsigned int format;
+
+ u32 coef_shadow[STA350_COEF_COUNT];
+ int shutdown;
+
+ struct gpio_desc *gpiod_nreset;
+ struct gpio_desc *gpiod_power_down;
+
+ struct mutex coeff_lock;
+};
+
+static const DECLARE_TLV_DB_SCALE(mvol_tlv, -12750, 50, 1);
+static const DECLARE_TLV_DB_SCALE(chvol_tlv, -7950, 50, 1);
+static const DECLARE_TLV_DB_SCALE(tone_tlv, -1200, 200, 0);
+
+static const char * const sta350_drc_ac[] = {
+ "Anti-Clipping", "Dynamic Range Compression"
+};
+static const char * const sta350_auto_gc_mode[] = {
+ "User", "AC no clipping", "AC limited clipping (10%)",
+ "DRC nighttime listening mode"
+};
+static const char * const sta350_auto_xo_mode[] = {
+ "User", "80Hz", "100Hz", "120Hz", "140Hz", "160Hz", "180Hz",
+ "200Hz", "220Hz", "240Hz", "260Hz", "280Hz", "300Hz", "320Hz",
+ "340Hz", "360Hz"
+};
+static const char * const sta350_binary_output[] = {
+ "FFX 3-state output - normal operation", "Binary output"
+};
+static const char * const sta350_limiter_select[] = {
+ "Limiter Disabled", "Limiter #1", "Limiter #2"
+};
+static const char * const sta350_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 * const sta350_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 const char * const sta350_noise_shaper_type[] = {
+ "Third order", "Fourth order"
+};
+
+static DECLARE_TLV_DB_RANGE(sta350_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(sta350_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(sta350_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(sta350_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(sta350_drc_ac_enum,
+ STA350_CONFD, STA350_CONFD_DRC_SHIFT,
+ sta350_drc_ac);
+static SOC_ENUM_SINGLE_DECL(sta350_noise_shaper_enum,
+ STA350_CONFE, STA350_CONFE_NSBW_SHIFT,
+ sta350_noise_shaper_type);
+static SOC_ENUM_SINGLE_DECL(sta350_auto_gc_enum,
+ STA350_AUTO1, STA350_AUTO1_AMGC_SHIFT,
+ sta350_auto_gc_mode);
+static SOC_ENUM_SINGLE_DECL(sta350_auto_xo_enum,
+ STA350_AUTO2, STA350_AUTO2_XO_SHIFT,
+ sta350_auto_xo_mode);
+static SOC_ENUM_SINGLE_DECL(sta350_binary_output_ch1_enum,
+ STA350_C1CFG, STA350_CxCFG_BO_SHIFT,
+ sta350_binary_output);
+static SOC_ENUM_SINGLE_DECL(sta350_binary_output_ch2_enum,
+ STA350_C2CFG, STA350_CxCFG_BO_SHIFT,
+ sta350_binary_output);
+static SOC_ENUM_SINGLE_DECL(sta350_binary_output_ch3_enum,
+ STA350_C3CFG, STA350_CxCFG_BO_SHIFT,
+ sta350_binary_output);
+static SOC_ENUM_SINGLE_DECL(sta350_limiter_ch1_enum,
+ STA350_C1CFG, STA350_CxCFG_LS_SHIFT,
+ sta350_limiter_select);
+static SOC_ENUM_SINGLE_DECL(sta350_limiter_ch2_enum,
+ STA350_C2CFG, STA350_CxCFG_LS_SHIFT,
+ sta350_limiter_select);
+static SOC_ENUM_SINGLE_DECL(sta350_limiter_ch3_enum,
+ STA350_C3CFG, STA350_CxCFG_LS_SHIFT,
+ sta350_limiter_select);
+static SOC_ENUM_SINGLE_DECL(sta350_limiter1_attack_rate_enum,
+ STA350_L1AR, STA350_LxA_SHIFT,
+ sta350_limiter_attack_rate);
+static SOC_ENUM_SINGLE_DECL(sta350_limiter2_attack_rate_enum,
+ STA350_L2AR, STA350_LxA_SHIFT,
+ sta350_limiter_attack_rate);
+static SOC_ENUM_SINGLE_DECL(sta350_limiter1_release_rate_enum,
+ STA350_L1AR, STA350_LxR_SHIFT,
+ sta350_limiter_release_rate);
+static SOC_ENUM_SINGLE_DECL(sta350_limiter2_release_rate_enum,
+ STA350_L2AR, STA350_LxR_SHIFT,
+ sta350_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 STA350 data sheet (big endian; b1, b2, a1, a2, b0)
+ */
+
+static int sta350_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 sta350_coefficient_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+ struct sta350_priv *sta350 = snd_soc_codec_get_drvdata(codec);
+ int numcoef = kcontrol->private_value >> 16;
+ int index = kcontrol->private_value & 0xffff;
+ unsigned int cfud, val;
+ int i, ret = 0;
+
+ mutex_lock(&sta350->coeff_lock);
+
+ /* preserve reserved bits in STA350_CFUD */
+ regmap_read(sta350->regmap, STA350_CFUD, &cfud);
+ cfud &= 0xf0;
+ /*
+ * chip documentation does not say if the bits are self clearing,
+ * so do it explicitly
+ */
+ regmap_write(sta350->regmap, STA350_CFUD, cfud);
+
+ regmap_write(sta350->regmap, STA350_CFADDR2, index);
+ if (numcoef == 1) {
+ regmap_write(sta350->regmap, STA350_CFUD, cfud | 0x04);
+ } else if (numcoef == 5) {
+ regmap_write(sta350->regmap, STA350_CFUD, cfud | 0x08);
+ } else {
+ ret = -EINVAL;
+ goto exit_unlock;
+ }
+
+ for (i = 0; i < 3 * numcoef; i++) {
+ regmap_read(sta350->regmap, STA350_B1CF1 + i, &val);
+ ucontrol->value.bytes.data[i] = val;
+ }
+
+exit_unlock:
+ mutex_unlock(&sta350->coeff_lock);
+
+ return ret;
+}
+
+static int sta350_coefficient_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+ struct sta350_priv *sta350 = snd_soc_codec_get_drvdata(codec);
+ int numcoef = kcontrol->private_value >> 16;
+ int index = kcontrol->private_value & 0xffff;
+ unsigned int cfud;
+ int i;
+
+ /* preserve reserved bits in STA350_CFUD */
+ regmap_read(sta350->regmap, STA350_CFUD, &cfud);
+ cfud &= 0xf0;
+ /*
+ * chip documentation does not say if the bits are self clearing,
+ * so do it explicitly
+ */
+ regmap_write(sta350->regmap, STA350_CFUD, cfud);
+
+ regmap_write(sta350->regmap, STA350_CFADDR2, index);
+ for (i = 0; i < numcoef && (index + i < STA350_COEF_COUNT); i++)
+ sta350->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(sta350->regmap, STA350_B1CF1 + i,
+ ucontrol->value.bytes.data[i]);
+ if (numcoef == 1)
+ regmap_write(sta350->regmap, STA350_CFUD, cfud | 0x01);
+ else if (numcoef == 5)
+ regmap_write(sta350->regmap, STA350_CFUD, cfud | 0x02);
+ else
+ return -EINVAL;
+
+ return 0;
+}
+
+static int sta350_sync_coef_shadow(struct snd_soc_codec *codec)
+{
+ struct sta350_priv *sta350 = snd_soc_codec_get_drvdata(codec);
+ unsigned int cfud;
+ int i;
+
+ /* preserve reserved bits in STA350_CFUD */
+ regmap_read(sta350->regmap, STA350_CFUD, &cfud);
+ cfud &= 0xf0;
+
+ for (i = 0; i < STA350_COEF_COUNT; i++) {
+ regmap_write(sta350->regmap, STA350_CFADDR2, i);
+ regmap_write(sta350->regmap, STA350_B1CF1,
+ (sta350->coef_shadow[i] >> 16) & 0xff);
+ regmap_write(sta350->regmap, STA350_B1CF2,
+ (sta350->coef_shadow[i] >> 8) & 0xff);
+ regmap_write(sta350->regmap, STA350_B1CF3,
+ (sta350->coef_shadow[i]) & 0xff);
+ /*
+ * chip documentation does not say if the bits are
+ * self-clearing, so do it explicitly
+ */
+ regmap_write(sta350->regmap, STA350_CFUD, cfud);
+ regmap_write(sta350->regmap, STA350_CFUD, cfud | 0x01);
+ }
+ return 0;
+}
+
+static int sta350_cache_sync(struct snd_soc_codec *codec)
+{
+ struct sta350_priv *sta350 = snd_soc_codec_get_drvdata(codec);
+ unsigned int mute;
+ int rc;
+
+ /* mute during register sync */
+ regmap_read(sta350->regmap, STA350_CFUD, &mute);
+ regmap_write(sta350->regmap, STA350_MMUTE, mute | STA350_MMUTE_MMUTE);
+ sta350_sync_coef_shadow(codec);
+ rc = regcache_sync(sta350->regmap);
+ regmap_write(sta350->regmap, STA350_MMUTE, mute);
+ return rc;
+}
+
+#define SINGLE_COEF(xname, index) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
+ .info = sta350_coefficient_info, \
+ .get = sta350_coefficient_get,\
+ .put = sta350_coefficient_put, \
+ .private_value = index | (1 << 16) }
+
+#define BIQUAD_COEFS(xname, index) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
+ .info = sta350_coefficient_info, \
+ .get = sta350_coefficient_get,\
+ .put = sta350_coefficient_put, \
+ .private_value = index | (5 << 16) }
+
+static const struct snd_kcontrol_new sta350_snd_controls[] = {
+SOC_SINGLE_TLV("Master Volume", STA350_MVOL, 0, 0xff, 1, mvol_tlv),
+/* VOL */
+SOC_SINGLE_TLV("Ch1 Volume", STA350_C1VOL, 0, 0xff, 1, chvol_tlv),
+SOC_SINGLE_TLV("Ch2 Volume", STA350_C2VOL, 0, 0xff, 1, chvol_tlv),
+SOC_SINGLE_TLV("Ch3 Volume", STA350_C3VOL, 0, 0xff, 1, chvol_tlv),
+/* CONFD */
+SOC_SINGLE("High Pass Filter Bypass Switch",
+ STA350_CONFD, STA350_CONFD_HPB_SHIFT, 1, 1),
+SOC_SINGLE("De-emphasis Filter Switch",
+ STA350_CONFD, STA350_CONFD_DEMP_SHIFT, 1, 0),
+SOC_SINGLE("DSP Bypass Switch",
+ STA350_CONFD, STA350_CONFD_DSPB_SHIFT, 1, 0),
+SOC_SINGLE("Post-scale Link Switch",
+ STA350_CONFD, STA350_CONFD_PSL_SHIFT, 1, 0),
+SOC_SINGLE("Biquad Coefficient Link Switch",
+ STA350_CONFD, STA350_CONFD_BQL_SHIFT, 1, 0),
+SOC_ENUM("Compressor/Limiter Switch", sta350_drc_ac_enum),
+SOC_ENUM("Noise Shaper Bandwidth", sta350_noise_shaper_enum),
+SOC_SINGLE("Zero-detect Mute Enable Switch",
+ STA350_CONFD, STA350_CONFD_ZDE_SHIFT, 1, 0),
+SOC_SINGLE("Submix Mode Switch",
+ STA350_CONFD, STA350_CONFD_SME_SHIFT, 1, 0),
+/* CONFE */
+SOC_SINGLE("Zero Cross Switch", STA350_CONFE, STA350_CONFE_ZCE_SHIFT, 1, 0),
+SOC_SINGLE("Soft Ramp Switch", STA350_CONFE, STA350_CONFE_SVE_SHIFT, 1, 0),
+/* MUTE */
+SOC_SINGLE("Master Switch", STA350_MMUTE, STA350_MMUTE_MMUTE_SHIFT, 1, 1),
+SOC_SINGLE("Ch1 Switch", STA350_MMUTE, STA350_MMUTE_C1M_SHIFT, 1, 1),
+SOC_SINGLE("Ch2 Switch", STA350_MMUTE, STA350_MMUTE_C2M_SHIFT, 1, 1),
+SOC_SINGLE("Ch3 Switch", STA350_MMUTE, STA350_MMUTE_C3M_SHIFT, 1, 1),
+/* AUTOx */
+SOC_ENUM("Automode GC", sta350_auto_gc_enum),
+SOC_ENUM("Automode XO", sta350_auto_xo_enum),
+/* CxCFG */
+SOC_SINGLE("Ch1 Tone Control Bypass Switch",
+ STA350_C1CFG, STA350_CxCFG_TCB_SHIFT, 1, 0),
+SOC_SINGLE("Ch2 Tone Control Bypass Switch",
+ STA350_C2CFG, STA350_CxCFG_TCB_SHIFT, 1, 0),
+SOC_SINGLE("Ch1 EQ Bypass Switch",
+ STA350_C1CFG, STA350_CxCFG_EQBP_SHIFT, 1, 0),
+SOC_SINGLE("Ch2 EQ Bypass Switch",
+ STA350_C2CFG, STA350_CxCFG_EQBP_SHIFT, 1, 0),
+SOC_SINGLE("Ch1 Master Volume Bypass Switch",
+ STA350_C1CFG, STA350_CxCFG_VBP_SHIFT, 1, 0),
+SOC_SINGLE("Ch2 Master Volume Bypass Switch",
+ STA350_C1CFG, STA350_CxCFG_VBP_SHIFT, 1, 0),
+SOC_SINGLE("Ch3 Master Volume Bypass Switch",
+ STA350_C1CFG, STA350_CxCFG_VBP_SHIFT, 1, 0),
+SOC_ENUM("Ch1 Binary Output Select", sta350_binary_output_ch1_enum),
+SOC_ENUM("Ch2 Binary Output Select", sta350_binary_output_ch2_enum),
+SOC_ENUM("Ch3 Binary Output Select", sta350_binary_output_ch3_enum),
+SOC_ENUM("Ch1 Limiter Select", sta350_limiter_ch1_enum),
+SOC_ENUM("Ch2 Limiter Select", sta350_limiter_ch2_enum),
+SOC_ENUM("Ch3 Limiter Select", sta350_limiter_ch3_enum),
+/* TONE */
+SOC_SINGLE_RANGE_TLV("Bass Tone Control Volume",
+ STA350_TONE, STA350_TONE_BTC_SHIFT, 1, 13, 0, tone_tlv),
+SOC_SINGLE_RANGE_TLV("Treble Tone Control Volume",
+ STA350_TONE, STA350_TONE_TTC_SHIFT, 1, 13, 0, tone_tlv),
+SOC_ENUM("Limiter1 Attack Rate (dB/ms)", sta350_limiter1_attack_rate_enum),
+SOC_ENUM("Limiter2 Attack Rate (dB/ms)", sta350_limiter2_attack_rate_enum),
+SOC_ENUM("Limiter1 Release Rate (dB/ms)", sta350_limiter1_release_rate_enum),
+SOC_ENUM("Limiter2 Release Rate (dB/ms)", sta350_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)",
+ STA350_L1ATRT, STA350_LxA_SHIFT,
+ 16, 0, sta350_limiter_ac_attack_tlv),
+SOC_SINGLE_TLV("Limiter2 Attack Threshold (AC Mode)",
+ STA350_L2ATRT, STA350_LxA_SHIFT,
+ 16, 0, sta350_limiter_ac_attack_tlv),
+SOC_SINGLE_TLV("Limiter1 Release Threshold (AC Mode)",
+ STA350_L1ATRT, STA350_LxR_SHIFT,
+ 16, 0, sta350_limiter_ac_release_tlv),
+SOC_SINGLE_TLV("Limiter2 Release Threshold (AC Mode)",
+ STA350_L2ATRT, STA350_LxR_SHIFT,
+ 16, 0, sta350_limiter_ac_release_tlv),
+SOC_SINGLE_TLV("Limiter1 Attack Threshold (DRC Mode)",
+ STA350_L1ATRT, STA350_LxA_SHIFT,
+ 16, 0, sta350_limiter_drc_attack_tlv),
+SOC_SINGLE_TLV("Limiter2 Attack Threshold (DRC Mode)",
+ STA350_L2ATRT, STA350_LxA_SHIFT,
+ 16, 0, sta350_limiter_drc_attack_tlv),
+SOC_SINGLE_TLV("Limiter1 Release Threshold (DRC Mode)",
+ STA350_L1ATRT, STA350_LxR_SHIFT,
+ 16, 0, sta350_limiter_drc_release_tlv),
+SOC_SINGLE_TLV("Limiter2 Release Threshold (DRC Mode)",
+ STA350_L2ATRT, STA350_LxR_SHIFT,
+ 16, 0, sta350_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 sta350_dapm_widgets[] = {
+SND_SOC_DAPM_DAC("DAC", NULL, 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 sta350_dapm_routes[] = {
+ { "LEFT", NULL, "DAC" },
+ { "RIGHT", NULL, "DAC" },
+ { "SUB", NULL, "DAC" },
+ { "DAC", NULL, "Playback" },
+};
+
+/* 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][6] = {
+ { 768, 512, 384, 256, 128, 576 },
+ { 384, 256, 192, 128, 64, 0 },
+ { 192, 128, 96, 64, 32, 0 },
+};
+
+/**
+ * sta350_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 STA350, based on the mcs_ratio_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.
+ */
+static int sta350_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 sta350_priv *sta350 = snd_soc_codec_get_drvdata(codec);
+
+ dev_dbg(codec->dev, "mclk=%u\n", freq);
+ sta350->mclk = freq;
+
+ return 0;
+}
+
+/**
+ * sta350_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 sta350_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ struct sta350_priv *sta350 = snd_soc_codec_get_drvdata(codec);
+ unsigned int 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:
+ sta350->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 |= STA350_CONFB_C2IM;
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ confb |= STA350_CONFB_C1IM;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return regmap_update_bits(sta350->regmap, STA350_CONFB,
+ STA350_CONFB_C1IM | STA350_CONFB_C2IM, confb);
+}
+
+/**
+ * sta350_hw_params - program the STA350 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 sta350_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct sta350_priv *sta350 = snd_soc_codec_get_drvdata(codec);
+ int i, mcs = -EINVAL, ir = -EINVAL;
+ unsigned int confa, confb;
+ unsigned int rate, ratio;
+ int ret;
+
+ if (!sta350->mclk) {
+ dev_err(codec->dev,
+ "sta350->mclk is unset. Unable to determine ratio\n");
+ return -EIO;
+ }
+
+ rate = params_rate(params);
+ ratio = sta350->mclk / rate;
+ dev_dbg(codec->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(codec->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(codec->dev, "Unresolvable ratio: %u\n", ratio);
+ return -EINVAL;
+ }
+
+ confa = (ir << STA350_CONFA_IR_SHIFT) |
+ (mcs << STA350_CONFA_MCS_SHIFT);
+ confb = 0;
+
+ switch (params_width(params)) {
+ case 24:
+ dev_dbg(codec->dev, "24bit\n");
+ /* fall through */
+ case 32:
+ dev_dbg(codec->dev, "24bit or 32bit\n");
+ switch (sta350->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(codec->dev, "20bit\n");
+ switch (sta350->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(codec->dev, "18bit\n");
+ switch (sta350->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(codec->dev, "16bit\n");
+ switch (sta350->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(sta350->regmap, STA350_CONFA,
+ STA350_CONFA_MCS_MASK | STA350_CONFA_IR_MASK,
+ confa);
+ if (ret < 0)
+ return ret;
+
+ ret = regmap_update_bits(sta350->regmap, STA350_CONFB,
+ STA350_CONFB_SAI_MASK | STA350_CONFB_SAIFB,
+ confb);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int sta350_startup_sequence(struct sta350_priv *sta350)
+{
+ if (sta350->gpiod_power_down)
+ gpiod_set_value(sta350->gpiod_power_down, 1);
+
+ if (sta350->gpiod_nreset) {
+ gpiod_set_value(sta350->gpiod_nreset, 0);
+ mdelay(1);
+ gpiod_set_value(sta350->gpiod_nreset, 1);
+ mdelay(1);
+ }
+
+ return 0;
+}
+
+/**
+ * sta350_set_bias_level - DAPM callback
+ * @codec: the codec device
+ * @level: DAPM power level
+ *
+ * This is called by ALSA to put the codec into low power mode
+ * or to wake it up. If the codec is powered off completely
+ * all registers must be restored after power on.
+ */
+static int sta350_set_bias_level(struct snd_soc_codec *codec,
+ enum snd_soc_bias_level level)
+{
+ struct sta350_priv *sta350 = snd_soc_codec_get_drvdata(codec);
+ int ret;
+
+ dev_dbg(codec->dev, "level = %d\n", level);
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ break;
+
+ case SND_SOC_BIAS_PREPARE:
+ /* Full power on */
+ regmap_update_bits(sta350->regmap, STA350_CONFF,
+ STA350_CONFF_PWDN | STA350_CONFF_EAPD,
+ STA350_CONFF_PWDN | STA350_CONFF_EAPD);
+ break;
+
+ case SND_SOC_BIAS_STANDBY:
+ if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
+ ret = regulator_bulk_enable(
+ ARRAY_SIZE(sta350->supplies),
+ sta350->supplies);
+ if (ret < 0) {
+ dev_err(codec->dev,
+ "Failed to enable supplies: %d\n",
+ ret);
+ return ret;
+ }
+ sta350_startup_sequence(sta350);
+ sta350_cache_sync(codec);
+ }
+
+ /* Power down */
+ regmap_update_bits(sta350->regmap, STA350_CONFF,
+ STA350_CONFF_PWDN | STA350_CONFF_EAPD,
+ 0);
+
+ break;
+
+ case SND_SOC_BIAS_OFF:
+ /* The chip runs through the power down sequence for us */
+ regmap_update_bits(sta350->regmap, STA350_CONFF,
+ STA350_CONFF_PWDN | STA350_CONFF_EAPD, 0);
+
+ /* power down: low */
+ if (sta350->gpiod_power_down)
+ gpiod_set_value(sta350->gpiod_power_down, 0);
+
+ if (sta350->gpiod_nreset)
+ gpiod_set_value(sta350->gpiod_nreset, 0);
+
+ regulator_bulk_disable(ARRAY_SIZE(sta350->supplies),
+ sta350->supplies);
+ break;
+ }
+ codec->dapm.bias_level = level;
+ return 0;
+}
+
+static const struct snd_soc_dai_ops sta350_dai_ops = {
+ .hw_params = sta350_hw_params,
+ .set_sysclk = sta350_set_dai_sysclk,
+ .set_fmt = sta350_set_dai_fmt,
+};
+
+static struct snd_soc_dai_driver sta350_dai = {
+ .name = "sta350-hifi",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = STA350_RATES,
+ .formats = STA350_FORMATS,
+ },
+ .ops = &sta350_dai_ops,
+};
+
+static int sta350_probe(struct snd_soc_codec *codec)
+{
+ struct sta350_priv *sta350 = snd_soc_codec_get_drvdata(codec);
+ struct sta350_platform_data *pdata = sta350->pdata;
+ int i, ret = 0, thermal = 0;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(sta350->supplies),
+ sta350->supplies);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
+ return ret;
+ }
+
+ ret = sta350_startup_sequence(sta350);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to startup device\n");
+ return ret;
+ }
+
+ /* CONFA */
+ if (!pdata->thermal_warning_recovery)
+ thermal |= STA350_CONFA_TWAB;
+ if (!pdata->thermal_warning_adjustment)
+ thermal |= STA350_CONFA_TWRB;
+ if (!pdata->fault_detect_recovery)
+ thermal |= STA350_CONFA_FDRB;
+ regmap_update_bits(sta350->regmap, STA350_CONFA,
+ STA350_CONFA_TWAB | STA350_CONFA_TWRB |
+ STA350_CONFA_FDRB,
+ thermal);
+
+ /* CONFC */
+ regmap_update_bits(sta350->regmap, STA350_CONFC,
+ STA350_CONFC_OM_MASK,
+ pdata->ffx_power_output_mode
+ << STA350_CONFC_OM_SHIFT);
+ regmap_update_bits(sta350->regmap, STA350_CONFC,
+ STA350_CONFC_CSZ_MASK,
+ pdata->drop_compensation_ns
+ << STA350_CONFC_CSZ_SHIFT);
+ regmap_update_bits(sta350->regmap,
+ STA350_CONFC,
+ STA350_CONFC_OCRB,
+ pdata->oc_warning_adjustment ?
+ STA350_CONFC_OCRB : 0);
+
+ /* CONFE */
+ regmap_update_bits(sta350->regmap, STA350_CONFE,
+ STA350_CONFE_MPCV,
+ pdata->max_power_use_mpcc ?
+ STA350_CONFE_MPCV : 0);
+ regmap_update_bits(sta350->regmap, STA350_CONFE,
+ STA350_CONFE_MPC,
+ pdata->max_power_correction ?
+ STA350_CONFE_MPC : 0);
+ regmap_update_bits(sta350->regmap, STA350_CONFE,
+ STA350_CONFE_AME,
+ pdata->am_reduction_mode ?
+ STA350_CONFE_AME : 0);
+ regmap_update_bits(sta350->regmap, STA350_CONFE,
+ STA350_CONFE_PWMS,
+ pdata->odd_pwm_speed_mode ?
+ STA350_CONFE_PWMS : 0);
+ regmap_update_bits(sta350->regmap, STA350_CONFE,
+ STA350_CONFE_DCCV,
+ pdata->distortion_compensation ?
+ STA350_CONFE_DCCV : 0);
+ /* CONFF */
+ regmap_update_bits(sta350->regmap, STA350_CONFF,
+ STA350_CONFF_IDE,
+ pdata->invalid_input_detect_mute ?
+ STA350_CONFF_IDE : 0);
+ regmap_update_bits(sta350->regmap, STA350_CONFF,
+ STA350_CONFF_OCFG_MASK,
+ pdata->output_conf
+ << STA350_CONFF_OCFG_SHIFT);
+
+ /* channel to output mapping */
+ regmap_update_bits(sta350->regmap, STA350_C1CFG,
+ STA350_CxCFG_OM_MASK,
+ pdata->ch1_output_mapping
+ << STA350_CxCFG_OM_SHIFT);
+ regmap_update_bits(sta350->regmap, STA350_C2CFG,
+ STA350_CxCFG_OM_MASK,
+ pdata->ch2_output_mapping
+ << STA350_CxCFG_OM_SHIFT);
+ regmap_update_bits(sta350->regmap, STA350_C3CFG,
+ STA350_CxCFG_OM_MASK,
+ pdata->ch3_output_mapping
+ << STA350_CxCFG_OM_SHIFT);
+
+ /* miscellaneous registers */
+ regmap_update_bits(sta350->regmap, STA350_MISC1,
+ STA350_MISC1_CPWMEN,
+ pdata->activate_mute_output ?
+ STA350_MISC1_CPWMEN : 0);
+ regmap_update_bits(sta350->regmap, STA350_MISC1,
+ STA350_MISC1_BRIDGOFF,
+ pdata->bridge_immediate_off ?
+ STA350_MISC1_BRIDGOFF : 0);
+ regmap_update_bits(sta350->regmap, STA350_MISC1,
+ STA350_MISC1_NSHHPEN,
+ pdata->noise_shape_dc_cut ?
+ STA350_MISC1_NSHHPEN : 0);
+ regmap_update_bits(sta350->regmap, STA350_MISC1,
+ STA350_MISC1_RPDNEN,
+ pdata->powerdown_master_vol ?
+ STA350_MISC1_RPDNEN: 0);
+
+ regmap_update_bits(sta350->regmap, STA350_MISC2,
+ STA350_MISC2_PNDLSL_MASK,
+ pdata->powerdown_delay_divider
+ << STA350_MISC2_PNDLSL_SHIFT);
+
+ /* initialize coefficient shadow RAM with reset values */
+ for (i = 4; i <= 49; i += 5)
+ sta350->coef_shadow[i] = 0x400000;
+ for (i = 50; i <= 54; i++)
+ sta350->coef_shadow[i] = 0x7fffff;
+ sta350->coef_shadow[55] = 0x5a9df7;
+ sta350->coef_shadow[56] = 0x7fffff;
+ sta350->coef_shadow[59] = 0x7fffff;
+ sta350->coef_shadow[60] = 0x400000;
+ sta350->coef_shadow[61] = 0x400000;
+
+ sta350_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+ /* Bias level configuration will have done an extra enable */
+ regulator_bulk_disable(ARRAY_SIZE(sta350->supplies), sta350->supplies);
+
+ return 0;
+}
+
+static int sta350_remove(struct snd_soc_codec *codec)
+{
+ struct sta350_priv *sta350 = snd_soc_codec_get_drvdata(codec);
+
+ regulator_bulk_disable(ARRAY_SIZE(sta350->supplies), sta350->supplies);
+
+ return 0;
+}
+
+static const struct snd_soc_codec_driver sta350_codec = {
+ .probe = sta350_probe,
+ .remove = sta350_remove,
+ .set_bias_level = sta350_set_bias_level,
+ .suspend_bias_off = true,
+ .controls = sta350_snd_controls,
+ .num_controls = ARRAY_SIZE(sta350_snd_controls),
+ .dapm_widgets = sta350_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(sta350_dapm_widgets),
+ .dapm_routes = sta350_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(sta350_dapm_routes),
+};
+
+static const struct regmap_config sta350_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = STA350_MISC2,
+ .reg_defaults = sta350_regs,
+ .num_reg_defaults = ARRAY_SIZE(sta350_regs),
+ .cache_type = REGCACHE_RBTREE,
+ .wr_table = &sta350_write_regs,
+ .rd_table = &sta350_read_regs,
+ .volatile_table = &sta350_volatile_regs,
+};
+
+#ifdef CONFIG_OF
+static const struct of_device_id st350_dt_ids[] = {
+ { .compatible = "st,sta350", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, st350_dt_ids);
+
+static const char * const sta350_ffx_modes[] = {
+ [STA350_FFX_PM_DROP_COMP] = "drop-compensation",
+ [STA350_FFX_PM_TAPERED_COMP] = "tapered-compensation",
+ [STA350_FFX_PM_FULL_POWER] = "full-power-mode",
+ [STA350_FFX_PM_VARIABLE_DROP_COMP] = "variable-drop-compensation",
+};
+
+static int sta350_probe_dt(struct device *dev, struct sta350_priv *sta350)
+{
+ struct device_node *np = dev->of_node;
+ struct sta350_platform_data *pdata;
+ const char *ffx_power_mode;
+ u16 tmp;
+ u8 tmp8;
+
+ 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,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,fault-detect-recovery", NULL))
+ pdata->fault_detect_recovery = 1;
+
+ pdata->ffx_power_output_mode = STA350_FFX_PM_VARIABLE_DROP_COMP;
+ if (!of_property_read_string(np, "st,ffx-power-output-mode",
+ &ffx_power_mode)) {
+ int i, mode = -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(sta350_ffx_modes); i++)
+ if (!strcasecmp(ffx_power_mode, sta350_ffx_modes[i]))
+ mode = i;
+
+ if (mode < 0)
+ dev_warn(dev, "Unsupported ffx output mode: %s\n",
+ ffx_power_mode);
+ else
+ pdata->ffx_power_output_mode = mode;
+ }
+
+ tmp = 140;
+ of_property_read_u16(np, "st,drop-compensation-ns", &tmp);
+ pdata->drop_compensation_ns = clamp_t(u16, tmp, 0, 300) / 20;
+
+ if (of_get_property(np, "st,overcurrent-warning-adjustment", NULL))
+ pdata->oc_warning_adjustment = 1;
+
+ /* 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;
+
+ if (of_get_property(np, "st,distortion-compensation", NULL))
+ pdata->distortion_compensation = 1;
+
+ /* CONFF */
+ if (of_get_property(np, "st,invalid-input-detect-mute", NULL))
+ pdata->invalid_input_detect_mute = 1;
+
+ /* MISC */
+ if (of_get_property(np, "st,activate-mute-output", NULL))
+ pdata->activate_mute_output = 1;
+
+ if (of_get_property(np, "st,bridge-immediate-off", NULL))
+ pdata->bridge_immediate_off = 1;
+
+ if (of_get_property(np, "st,noise-shape-dc-cut", NULL))
+ pdata->noise_shape_dc_cut = 1;
+
+ if (of_get_property(np, "st,powerdown-master-volume", NULL))
+ pdata->powerdown_master_vol = 1;
+
+ if (!of_property_read_u8(np, "st,powerdown-delay-divider", &tmp8)) {
+ if (is_power_of_2(tmp8) && tmp8 >= 1 && tmp8 <= 128)
+ pdata->powerdown_delay_divider = ilog2(tmp8);
+ else
+ dev_warn(dev, "Unsupported powerdown delay divider %d\n",
+ tmp8);
+ }
+
+ sta350->pdata = pdata;
+
+ return 0;
+}
+#endif
+
+static int sta350_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &i2c->dev;
+ struct sta350_priv *sta350;
+ int ret, i;
+
+ sta350 = devm_kzalloc(dev, sizeof(struct sta350_priv), GFP_KERNEL);
+ if (!sta350)
+ return -ENOMEM;
+
+ mutex_init(&sta350->coeff_lock);
+ sta350->pdata = dev_get_platdata(dev);
+
+#ifdef CONFIG_OF
+ if (dev->of_node) {
+ ret = sta350_probe_dt(dev, sta350);
+ if (ret < 0)
+ return ret;
+ }
+#endif
+
+ /* GPIOs */
+ sta350->gpiod_nreset = devm_gpiod_get_optional(dev, "reset",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(sta350->gpiod_nreset))
+ return PTR_ERR(sta350->gpiod_nreset);
+
+ sta350->gpiod_power_down = devm_gpiod_get(dev, "power-down",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(sta350->gpiod_power_down))
+ return PTR_ERR(sta350->gpiod_power_down);
+
+ /* regulators */
+ for (i = 0; i < ARRAY_SIZE(sta350->supplies); i++)
+ sta350->supplies[i].supply = sta350_supply_names[i];
+
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(sta350->supplies),
+ sta350->supplies);
+ if (ret < 0) {
+ dev_err(dev, "Failed to request supplies: %d\n", ret);
+ return ret;
+ }
+
+ sta350->regmap = devm_regmap_init_i2c(i2c, &sta350_regmap);
+ if (IS_ERR(sta350->regmap)) {
+ ret = PTR_ERR(sta350->regmap);
+ dev_err(dev, "Failed to init regmap: %d\n", ret);
+ return ret;
+ }
+
+ i2c_set_clientdata(i2c, sta350);
+
+ ret = snd_soc_register_codec(dev, &sta350_codec, &sta350_dai, 1);
+ if (ret < 0)
+ dev_err(dev, "Failed to register codec (%d)\n", ret);
+
+ return ret;
+}
+
+static int sta350_i2c_remove(struct i2c_client *client)
+{
+ snd_soc_unregister_codec(&client->dev);
+ return 0;
+}
+
+static const struct i2c_device_id sta350_i2c_id[] = {
+ { "sta350", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, sta350_i2c_id);
+
+static struct i2c_driver sta350_i2c_driver = {
+ .driver = {
+ .name = "sta350",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(st350_dt_ids),
+ },
+ .probe = sta350_i2c_probe,
+ .remove = sta350_i2c_remove,
+ .id_table = sta350_i2c_id,
+};
+
+module_i2c_driver(sta350_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC STA350 driver");
+MODULE_AUTHOR("Sven Brandau <info@brandau.biz>");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff