1046 lines
31 KiB
C
1046 lines
31 KiB
C
/*
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* Codec driver for ST STA32x 2.1-channel high-efficiency digital audio system
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*
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* Copyright: 2011 Raumfeld GmbH
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* Author: Johannes Stezenbach <js@sig21.net>
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*
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* based on code from:
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* Wolfson Microelectronics PLC.
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* Mark Brown <broonie@opensource.wolfsonmicro.com>
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* Freescale Semiconductor, Inc.
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* Timur Tabi <timur@freescale.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ":%s:%d: " fmt, __func__, __LINE__
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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#include <linux/regulator/consumer.h>
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#include <linux/slab.h>
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#include <linux/workqueue.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <sound/initval.h>
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#include <sound/tlv.h>
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#include <sound/sta32x.h>
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#include "sta32x.h"
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#define STA32X_RATES (SNDRV_PCM_RATE_32000 | \
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SNDRV_PCM_RATE_44100 | \
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SNDRV_PCM_RATE_48000 | \
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SNDRV_PCM_RATE_88200 | \
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SNDRV_PCM_RATE_96000 | \
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SNDRV_PCM_RATE_176400 | \
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SNDRV_PCM_RATE_192000)
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#define STA32X_FORMATS \
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(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \
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SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
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SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
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SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE | \
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SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE | \
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SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
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/* Power-up register defaults */
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static const struct reg_default sta32x_regs[] = {
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{ 0x0, 0x63 },
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{ 0x1, 0x80 },
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{ 0x2, 0xc2 },
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{ 0x3, 0x40 },
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{ 0x4, 0xc2 },
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{ 0x5, 0x5c },
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{ 0x6, 0x10 },
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{ 0x7, 0xff },
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{ 0x8, 0x60 },
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{ 0x9, 0x60 },
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{ 0xa, 0x60 },
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{ 0xb, 0x80 },
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{ 0xc, 0x00 },
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{ 0xd, 0x00 },
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{ 0xe, 0x00 },
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{ 0xf, 0x40 },
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{ 0x10, 0x80 },
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{ 0x11, 0x77 },
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{ 0x12, 0x6a },
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{ 0x13, 0x69 },
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{ 0x14, 0x6a },
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{ 0x15, 0x69 },
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{ 0x16, 0x00 },
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{ 0x17, 0x00 },
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{ 0x18, 0x00 },
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{ 0x19, 0x00 },
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{ 0x1a, 0x00 },
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{ 0x1b, 0x00 },
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{ 0x1c, 0x00 },
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{ 0x1d, 0x00 },
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{ 0x1e, 0x00 },
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{ 0x1f, 0x00 },
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{ 0x20, 0x00 },
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{ 0x21, 0x00 },
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{ 0x22, 0x00 },
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{ 0x23, 0x00 },
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{ 0x24, 0x00 },
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{ 0x25, 0x00 },
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{ 0x26, 0x00 },
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{ 0x27, 0x2d },
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{ 0x28, 0xc0 },
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{ 0x2b, 0x00 },
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{ 0x2c, 0x0c },
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};
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/* regulator power supply names */
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static const char *sta32x_supply_names[] = {
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"Vdda", /* analog supply, 3.3VV */
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"Vdd3", /* digital supply, 3.3V */
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"Vcc" /* power amp spply, 10V - 36V */
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};
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/* codec private data */
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struct sta32x_priv {
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struct regmap *regmap;
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struct regulator_bulk_data supplies[ARRAY_SIZE(sta32x_supply_names)];
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struct snd_soc_codec *codec;
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struct sta32x_platform_data *pdata;
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unsigned int mclk;
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unsigned int format;
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u32 coef_shadow[STA32X_COEF_COUNT];
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struct delayed_work watchdog_work;
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int shutdown;
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};
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static const DECLARE_TLV_DB_SCALE(mvol_tlv, -12700, 50, 1);
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static const DECLARE_TLV_DB_SCALE(chvol_tlv, -7950, 50, 1);
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static const DECLARE_TLV_DB_SCALE(tone_tlv, -120, 200, 0);
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static const char *sta32x_drc_ac[] = {
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"Anti-Clipping", "Dynamic Range Compression" };
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static const char *sta32x_auto_eq_mode[] = {
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"User", "Preset", "Loudness" };
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static const char *sta32x_auto_gc_mode[] = {
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"User", "AC no clipping", "AC limited clipping (10%)",
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"DRC nighttime listening mode" };
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static const char *sta32x_auto_xo_mode[] = {
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"User", "80Hz", "100Hz", "120Hz", "140Hz", "160Hz", "180Hz", "200Hz",
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"220Hz", "240Hz", "260Hz", "280Hz", "300Hz", "320Hz", "340Hz", "360Hz" };
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static const char *sta32x_preset_eq_mode[] = {
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"Flat", "Rock", "Soft Rock", "Jazz", "Classical", "Dance", "Pop", "Soft",
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"Hard", "Party", "Vocal", "Hip-Hop", "Dialog", "Bass-boost #1",
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"Bass-boost #2", "Bass-boost #3", "Loudness 1", "Loudness 2",
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"Loudness 3", "Loudness 4", "Loudness 5", "Loudness 6", "Loudness 7",
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"Loudness 8", "Loudness 9", "Loudness 10", "Loudness 11", "Loudness 12",
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"Loudness 13", "Loudness 14", "Loudness 15", "Loudness 16" };
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static const char *sta32x_limiter_select[] = {
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"Limiter Disabled", "Limiter #1", "Limiter #2" };
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static const char *sta32x_limiter_attack_rate[] = {
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"3.1584", "2.7072", "2.2560", "1.8048", "1.3536", "0.9024",
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"0.4512", "0.2256", "0.1504", "0.1123", "0.0902", "0.0752",
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"0.0645", "0.0564", "0.0501", "0.0451" };
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static const char *sta32x_limiter_release_rate[] = {
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"0.5116", "0.1370", "0.0744", "0.0499", "0.0360", "0.0299",
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"0.0264", "0.0208", "0.0198", "0.0172", "0.0147", "0.0137",
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"0.0134", "0.0117", "0.0110", "0.0104" };
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static const unsigned int sta32x_limiter_ac_attack_tlv[] = {
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TLV_DB_RANGE_HEAD(2),
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0, 7, TLV_DB_SCALE_ITEM(-1200, 200, 0),
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8, 16, TLV_DB_SCALE_ITEM(300, 100, 0),
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};
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static const unsigned int sta32x_limiter_ac_release_tlv[] = {
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TLV_DB_RANGE_HEAD(5),
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0, 0, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
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1, 1, TLV_DB_SCALE_ITEM(-2900, 0, 0),
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2, 2, TLV_DB_SCALE_ITEM(-2000, 0, 0),
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3, 8, TLV_DB_SCALE_ITEM(-1400, 200, 0),
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8, 16, TLV_DB_SCALE_ITEM(-700, 100, 0),
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};
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static const unsigned int sta32x_limiter_drc_attack_tlv[] = {
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TLV_DB_RANGE_HEAD(3),
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0, 7, TLV_DB_SCALE_ITEM(-3100, 200, 0),
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8, 13, TLV_DB_SCALE_ITEM(-1600, 100, 0),
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14, 16, TLV_DB_SCALE_ITEM(-1000, 300, 0),
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};
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static const unsigned int sta32x_limiter_drc_release_tlv[] = {
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TLV_DB_RANGE_HEAD(5),
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0, 0, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
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1, 2, TLV_DB_SCALE_ITEM(-3800, 200, 0),
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3, 4, TLV_DB_SCALE_ITEM(-3300, 200, 0),
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5, 12, TLV_DB_SCALE_ITEM(-3000, 200, 0),
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13, 16, TLV_DB_SCALE_ITEM(-1500, 300, 0),
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};
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static SOC_ENUM_SINGLE_DECL(sta32x_drc_ac_enum,
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STA32X_CONFD, STA32X_CONFD_DRC_SHIFT,
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sta32x_drc_ac);
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static SOC_ENUM_SINGLE_DECL(sta32x_auto_eq_enum,
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STA32X_AUTO1, STA32X_AUTO1_AMEQ_SHIFT,
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sta32x_auto_eq_mode);
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static SOC_ENUM_SINGLE_DECL(sta32x_auto_gc_enum,
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STA32X_AUTO1, STA32X_AUTO1_AMGC_SHIFT,
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sta32x_auto_gc_mode);
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static SOC_ENUM_SINGLE_DECL(sta32x_auto_xo_enum,
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STA32X_AUTO2, STA32X_AUTO2_XO_SHIFT,
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sta32x_auto_xo_mode);
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static SOC_ENUM_SINGLE_DECL(sta32x_preset_eq_enum,
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STA32X_AUTO3, STA32X_AUTO3_PEQ_SHIFT,
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sta32x_preset_eq_mode);
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static SOC_ENUM_SINGLE_DECL(sta32x_limiter_ch1_enum,
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STA32X_C1CFG, STA32X_CxCFG_LS_SHIFT,
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sta32x_limiter_select);
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static SOC_ENUM_SINGLE_DECL(sta32x_limiter_ch2_enum,
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STA32X_C2CFG, STA32X_CxCFG_LS_SHIFT,
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sta32x_limiter_select);
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static SOC_ENUM_SINGLE_DECL(sta32x_limiter_ch3_enum,
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STA32X_C3CFG, STA32X_CxCFG_LS_SHIFT,
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sta32x_limiter_select);
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static SOC_ENUM_SINGLE_DECL(sta32x_limiter1_attack_rate_enum,
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STA32X_L1AR, STA32X_LxA_SHIFT,
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sta32x_limiter_attack_rate);
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static SOC_ENUM_SINGLE_DECL(sta32x_limiter2_attack_rate_enum,
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STA32X_L2AR, STA32X_LxA_SHIFT,
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sta32x_limiter_attack_rate);
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static SOC_ENUM_SINGLE_DECL(sta32x_limiter1_release_rate_enum,
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STA32X_L1AR, STA32X_LxR_SHIFT,
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sta32x_limiter_release_rate);
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static SOC_ENUM_SINGLE_DECL(sta32x_limiter2_release_rate_enum,
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STA32X_L2AR, STA32X_LxR_SHIFT,
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sta32x_limiter_release_rate);
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/* byte array controls for setting biquad, mixer, scaling coefficients;
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* for biquads all five coefficients need to be set in one go,
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* mixer and pre/postscale coefs can be set individually;
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* each coef is 24bit, the bytes are ordered in the same way
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* as given in the STA32x data sheet (big endian; b1, b2, a1, a2, b0)
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*/
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static int sta32x_coefficient_info(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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int numcoef = kcontrol->private_value >> 16;
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uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
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uinfo->count = 3 * numcoef;
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return 0;
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}
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static int sta32x_coefficient_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
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int numcoef = kcontrol->private_value >> 16;
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int index = kcontrol->private_value & 0xffff;
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unsigned int cfud;
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int i;
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/* preserve reserved bits in STA32X_CFUD */
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cfud = snd_soc_read(codec, STA32X_CFUD) & 0xf0;
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/* chip documentation does not say if the bits are self clearing,
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* so do it explicitly */
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snd_soc_write(codec, STA32X_CFUD, cfud);
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snd_soc_write(codec, STA32X_CFADDR2, index);
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if (numcoef == 1)
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snd_soc_write(codec, STA32X_CFUD, cfud | 0x04);
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else if (numcoef == 5)
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snd_soc_write(codec, STA32X_CFUD, cfud | 0x08);
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else
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return -EINVAL;
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for (i = 0; i < 3 * numcoef; i++)
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ucontrol->value.bytes.data[i] =
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snd_soc_read(codec, STA32X_B1CF1 + i);
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return 0;
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}
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static int sta32x_coefficient_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
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struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
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int numcoef = kcontrol->private_value >> 16;
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int index = kcontrol->private_value & 0xffff;
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unsigned int cfud;
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int i;
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/* preserve reserved bits in STA32X_CFUD */
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cfud = snd_soc_read(codec, STA32X_CFUD) & 0xf0;
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/* chip documentation does not say if the bits are self clearing,
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* so do it explicitly */
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snd_soc_write(codec, STA32X_CFUD, cfud);
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snd_soc_write(codec, STA32X_CFADDR2, index);
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for (i = 0; i < numcoef && (index + i < STA32X_COEF_COUNT); i++)
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sta32x->coef_shadow[index + i] =
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(ucontrol->value.bytes.data[3 * i] << 16)
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| (ucontrol->value.bytes.data[3 * i + 1] << 8)
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| (ucontrol->value.bytes.data[3 * i + 2]);
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for (i = 0; i < 3 * numcoef; i++)
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snd_soc_write(codec, STA32X_B1CF1 + i,
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ucontrol->value.bytes.data[i]);
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if (numcoef == 1)
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snd_soc_write(codec, STA32X_CFUD, cfud | 0x01);
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else if (numcoef == 5)
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snd_soc_write(codec, STA32X_CFUD, cfud | 0x02);
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else
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return -EINVAL;
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return 0;
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}
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static int sta32x_sync_coef_shadow(struct snd_soc_codec *codec)
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{
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struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
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unsigned int cfud;
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int i;
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/* preserve reserved bits in STA32X_CFUD */
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cfud = snd_soc_read(codec, STA32X_CFUD) & 0xf0;
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for (i = 0; i < STA32X_COEF_COUNT; i++) {
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snd_soc_write(codec, STA32X_CFADDR2, i);
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snd_soc_write(codec, STA32X_B1CF1,
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(sta32x->coef_shadow[i] >> 16) & 0xff);
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snd_soc_write(codec, STA32X_B1CF2,
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(sta32x->coef_shadow[i] >> 8) & 0xff);
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snd_soc_write(codec, STA32X_B1CF3,
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(sta32x->coef_shadow[i]) & 0xff);
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/* chip documentation does not say if the bits are
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* self-clearing, so do it explicitly */
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snd_soc_write(codec, STA32X_CFUD, cfud);
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snd_soc_write(codec, STA32X_CFUD, cfud | 0x01);
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}
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return 0;
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}
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static int sta32x_cache_sync(struct snd_soc_codec *codec)
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{
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struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
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unsigned int mute;
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int rc;
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/* mute during register sync */
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mute = snd_soc_read(codec, STA32X_MMUTE);
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snd_soc_write(codec, STA32X_MMUTE, mute | STA32X_MMUTE_MMUTE);
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sta32x_sync_coef_shadow(codec);
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rc = regcache_sync(sta32x->regmap);
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snd_soc_write(codec, STA32X_MMUTE, mute);
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return rc;
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}
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/* work around ESD issue where sta32x resets and loses all configuration */
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static void sta32x_watchdog(struct work_struct *work)
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{
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struct sta32x_priv *sta32x = container_of(work, struct sta32x_priv,
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watchdog_work.work);
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struct snd_soc_codec *codec = sta32x->codec;
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unsigned int confa, confa_cached;
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/* check if sta32x has reset itself */
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confa_cached = snd_soc_read(codec, STA32X_CONFA);
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regcache_cache_bypass(sta32x->regmap, true);
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confa = snd_soc_read(codec, STA32X_CONFA);
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regcache_cache_bypass(sta32x->regmap, false);
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if (confa != confa_cached) {
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regcache_mark_dirty(sta32x->regmap);
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sta32x_cache_sync(codec);
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}
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if (!sta32x->shutdown)
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queue_delayed_work(system_power_efficient_wq,
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&sta32x->watchdog_work,
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round_jiffies_relative(HZ));
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}
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static void sta32x_watchdog_start(struct sta32x_priv *sta32x)
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{
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if (sta32x->pdata->needs_esd_watchdog) {
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sta32x->shutdown = 0;
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queue_delayed_work(system_power_efficient_wq,
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&sta32x->watchdog_work,
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round_jiffies_relative(HZ));
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}
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}
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static void sta32x_watchdog_stop(struct sta32x_priv *sta32x)
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{
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if (sta32x->pdata->needs_esd_watchdog) {
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sta32x->shutdown = 1;
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cancel_delayed_work_sync(&sta32x->watchdog_work);
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}
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}
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#define SINGLE_COEF(xname, index) \
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{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
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.info = sta32x_coefficient_info, \
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.get = sta32x_coefficient_get,\
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.put = sta32x_coefficient_put, \
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.private_value = index | (1 << 16) }
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#define BIQUAD_COEFS(xname, index) \
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{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
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.info = sta32x_coefficient_info, \
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.get = sta32x_coefficient_get,\
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.put = sta32x_coefficient_put, \
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.private_value = index | (5 << 16) }
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static const struct snd_kcontrol_new sta32x_snd_controls[] = {
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|
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 struct {
|
|
int ratio;
|
|
int mcs;
|
|
} mclk_ratios[3][7] = {
|
|
{ { 768, 0 }, { 512, 1 }, { 384, 2 }, { 256, 3 },
|
|
{ 128, 4 }, { 576, 5 }, { 0, 0 } },
|
|
{ { 384, 2 }, { 256, 3 }, { 192, 4 }, { 128, 5 }, {64, 0 }, { 0, 0 } },
|
|
{ { 384, 2 }, { 256, 3 }, { 192, 4 }, { 128, 5 }, {64, 0 }, { 0, 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_codec *codec = codec_dai->codec;
|
|
struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
|
|
int i, j, ir, fs;
|
|
unsigned int rates = 0;
|
|
unsigned int rate_min = -1;
|
|
unsigned int rate_max = 0;
|
|
|
|
pr_debug("mclk=%u\n", freq);
|
|
sta32x->mclk = freq;
|
|
|
|
if (sta32x->mclk) {
|
|
for (i = 0; i < ARRAY_SIZE(interpolation_ratios); i++) {
|
|
ir = interpolation_ratios[i].ir;
|
|
fs = interpolation_ratios[i].fs;
|
|
for (j = 0; mclk_ratios[ir][j].ratio; j++) {
|
|
if (mclk_ratios[ir][j].ratio * fs == freq) {
|
|
rates |= snd_pcm_rate_to_rate_bit(fs);
|
|
if (fs < rate_min)
|
|
rate_min = fs;
|
|
if (fs > rate_max)
|
|
rate_max = fs;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
/* FIXME: soc should support a rate list */
|
|
rates &= ~SNDRV_PCM_RATE_KNOT;
|
|
|
|
if (!rates) {
|
|
dev_err(codec->dev, "could not find a valid sample rate\n");
|
|
return -EINVAL;
|
|
}
|
|
} else {
|
|
/* enable all possible rates */
|
|
rates = STA32X_RATES;
|
|
rate_min = 32000;
|
|
rate_max = 192000;
|
|
}
|
|
|
|
codec_dai->driver->playback.rates = rates;
|
|
codec_dai->driver->playback.rate_min = rate_min;
|
|
codec_dai->driver->playback.rate_max = rate_max;
|
|
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_codec *codec = codec_dai->codec;
|
|
struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
|
|
u8 confb = snd_soc_read(codec, STA32X_CONFB);
|
|
|
|
pr_debug("\n");
|
|
confb &= ~(STA32X_CONFB_C1IM | STA32X_CONFB_C2IM);
|
|
|
|
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;
|
|
}
|
|
|
|
snd_soc_write(codec, STA32X_CONFB, confb);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* 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_codec *codec = dai->codec;
|
|
struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
|
|
unsigned int rate;
|
|
int i, mcs = -1, ir = -1;
|
|
u8 confa, confb;
|
|
|
|
rate = params_rate(params);
|
|
pr_debug("rate: %u\n", rate);
|
|
for (i = 0; i < ARRAY_SIZE(interpolation_ratios); i++)
|
|
if (interpolation_ratios[i].fs == rate) {
|
|
ir = interpolation_ratios[i].ir;
|
|
break;
|
|
}
|
|
if (ir < 0)
|
|
return -EINVAL;
|
|
for (i = 0; mclk_ratios[ir][i].ratio; i++)
|
|
if (mclk_ratios[ir][i].ratio * rate == sta32x->mclk) {
|
|
mcs = mclk_ratios[ir][i].mcs;
|
|
break;
|
|
}
|
|
if (mcs < 0)
|
|
return -EINVAL;
|
|
|
|
confa = snd_soc_read(codec, STA32X_CONFA);
|
|
confa &= ~(STA32X_CONFA_MCS_MASK | STA32X_CONFA_IR_MASK);
|
|
confa |= (ir << STA32X_CONFA_IR_SHIFT) | (mcs << STA32X_CONFA_MCS_SHIFT);
|
|
|
|
confb = snd_soc_read(codec, STA32X_CONFB);
|
|
confb &= ~(STA32X_CONFB_SAI_MASK | STA32X_CONFB_SAIFB);
|
|
switch (params_width(params)) {
|
|
case 24:
|
|
pr_debug("24bit\n");
|
|
/* fall through */
|
|
case 32:
|
|
pr_debug("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:
|
|
pr_debug("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:
|
|
pr_debug("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:
|
|
pr_debug("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;
|
|
}
|
|
|
|
snd_soc_write(codec, STA32X_CONFA, confa);
|
|
snd_soc_write(codec, STA32X_CONFB, confb);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* sta32x_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 sta32x_set_bias_level(struct snd_soc_codec *codec,
|
|
enum snd_soc_bias_level level)
|
|
{
|
|
int ret;
|
|
struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
|
|
|
|
pr_debug("level = %d\n", level);
|
|
switch (level) {
|
|
case SND_SOC_BIAS_ON:
|
|
break;
|
|
|
|
case SND_SOC_BIAS_PREPARE:
|
|
/* Full power on */
|
|
snd_soc_update_bits(codec, STA32X_CONFF,
|
|
STA32X_CONFF_PWDN | STA32X_CONFF_EAPD,
|
|
STA32X_CONFF_PWDN | STA32X_CONFF_EAPD);
|
|
break;
|
|
|
|
case SND_SOC_BIAS_STANDBY:
|
|
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
|
|
ret = regulator_bulk_enable(ARRAY_SIZE(sta32x->supplies),
|
|
sta32x->supplies);
|
|
if (ret != 0) {
|
|
dev_err(codec->dev,
|
|
"Failed to enable supplies: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
sta32x_cache_sync(codec);
|
|
sta32x_watchdog_start(sta32x);
|
|
}
|
|
|
|
/* Power up to mute */
|
|
/* FIXME */
|
|
snd_soc_update_bits(codec, STA32X_CONFF,
|
|
STA32X_CONFF_PWDN | STA32X_CONFF_EAPD,
|
|
STA32X_CONFF_PWDN | STA32X_CONFF_EAPD);
|
|
|
|
break;
|
|
|
|
case SND_SOC_BIAS_OFF:
|
|
/* The chip runs through the power down sequence for us. */
|
|
snd_soc_update_bits(codec, STA32X_CONFF,
|
|
STA32X_CONFF_PWDN | STA32X_CONFF_EAPD,
|
|
STA32X_CONFF_PWDN);
|
|
msleep(300);
|
|
sta32x_watchdog_stop(sta32x);
|
|
regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies),
|
|
sta32x->supplies);
|
|
break;
|
|
}
|
|
codec->dapm.bias_level = level;
|
|
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 = {
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.name = "STA32X",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 2,
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.channels_max = 2,
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.rates = STA32X_RATES,
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.formats = STA32X_FORMATS,
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},
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.ops = &sta32x_dai_ops,
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};
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|
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#ifdef CONFIG_PM
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static int sta32x_suspend(struct snd_soc_codec *codec)
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{
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sta32x_set_bias_level(codec, SND_SOC_BIAS_OFF);
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return 0;
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}
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|
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static int sta32x_resume(struct snd_soc_codec *codec)
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{
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sta32x_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
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return 0;
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}
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#else
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#define sta32x_suspend NULL
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#define sta32x_resume NULL
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#endif
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|
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static int sta32x_probe(struct snd_soc_codec *codec)
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{
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struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
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int i, ret = 0, thermal = 0;
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|
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sta32x->codec = codec;
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sta32x->pdata = dev_get_platdata(codec->dev);
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|
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ret = regulator_bulk_enable(ARRAY_SIZE(sta32x->supplies),
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sta32x->supplies);
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if (ret != 0) {
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dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
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return ret;
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}
|
|
|
|
/* Chip documentation explicitly requires that the reset values
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* of reserved register bits are left untouched.
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* Write the register default value to cache for reserved registers,
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* so the write to the these registers are suppressed by the cache
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* restore code when it skips writes of default registers.
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*/
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regcache_cache_only(sta32x->regmap, true);
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snd_soc_write(codec, STA32X_CONFC, 0xc2);
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snd_soc_write(codec, STA32X_CONFE, 0xc2);
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snd_soc_write(codec, STA32X_CONFF, 0x5c);
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snd_soc_write(codec, STA32X_MMUTE, 0x10);
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snd_soc_write(codec, STA32X_AUTO1, 0x60);
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snd_soc_write(codec, STA32X_AUTO3, 0x00);
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snd_soc_write(codec, STA32X_C3CFG, 0x40);
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regcache_cache_only(sta32x->regmap, false);
|
|
|
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/* set thermal warning adjustment and recovery */
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if (!(sta32x->pdata->thermal_conf & STA32X_THERMAL_ADJUSTMENT_ENABLE))
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thermal |= STA32X_CONFA_TWAB;
|
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if (!(sta32x->pdata->thermal_conf & STA32X_THERMAL_RECOVERY_ENABLE))
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thermal |= STA32X_CONFA_TWRB;
|
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snd_soc_update_bits(codec, STA32X_CONFA,
|
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STA32X_CONFA_TWAB | STA32X_CONFA_TWRB,
|
|
thermal);
|
|
|
|
/* select output configuration */
|
|
snd_soc_update_bits(codec, STA32X_CONFF,
|
|
STA32X_CONFF_OCFG_MASK,
|
|
sta32x->pdata->output_conf
|
|
<< STA32X_CONFF_OCFG_SHIFT);
|
|
|
|
/* channel to output mapping */
|
|
snd_soc_update_bits(codec, STA32X_C1CFG,
|
|
STA32X_CxCFG_OM_MASK,
|
|
sta32x->pdata->ch1_output_mapping
|
|
<< STA32X_CxCFG_OM_SHIFT);
|
|
snd_soc_update_bits(codec, STA32X_C2CFG,
|
|
STA32X_CxCFG_OM_MASK,
|
|
sta32x->pdata->ch2_output_mapping
|
|
<< STA32X_CxCFG_OM_SHIFT);
|
|
snd_soc_update_bits(codec, STA32X_C3CFG,
|
|
STA32X_CxCFG_OM_MASK,
|
|
sta32x->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);
|
|
|
|
sta32x_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
/* Bias level configuration will have done an extra enable */
|
|
regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sta32x_remove(struct snd_soc_codec *codec)
|
|
{
|
|
struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
|
|
|
|
sta32x_watchdog_stop(sta32x);
|
|
sta32x_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
|
regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static bool sta32x_reg_is_volatile(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case STA32X_CONFA ... STA32X_L2ATRT:
|
|
case STA32X_MPCC1 ... STA32X_FDRC2:
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static const struct snd_soc_codec_driver sta32x_codec = {
|
|
.probe = sta32x_probe,
|
|
.remove = sta32x_remove,
|
|
.suspend = sta32x_suspend,
|
|
.resume = sta32x_resume,
|
|
.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),
|
|
};
|
|
|
|
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,
|
|
.volatile_reg = sta32x_reg_is_volatile,
|
|
};
|
|
|
|
static int sta32x_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct sta32x_priv *sta32x;
|
|
int ret, i;
|
|
|
|
sta32x = devm_kzalloc(&i2c->dev, sizeof(struct sta32x_priv),
|
|
GFP_KERNEL);
|
|
if (!sta32x)
|
|
return -ENOMEM;
|
|
|
|
/* 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(&i2c->dev, "Failed to init regmap: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
i2c_set_clientdata(i2c, sta32x);
|
|
|
|
ret = snd_soc_register_codec(&i2c->dev, &sta32x_codec, &sta32x_dai, 1);
|
|
if (ret != 0)
|
|
dev_err(&i2c->dev, "Failed to register codec (%d)\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int sta32x_i2c_remove(struct i2c_client *client)
|
|
{
|
|
snd_soc_unregister_codec(&client->dev);
|
|
return 0;
|
|
}
|
|
|
|
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",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = sta32x_i2c_probe,
|
|
.remove = sta32x_i2c_remove,
|
|
.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");
|