--- /dev/null
+/*
+ * tfa9879.c -- driver for NXP Semiconductors TFA9879
+ *
+ * Copyright (C) 2014 Axentia Technologies AB
+ * Author: Peter Rosin <peda@axentia.se>
+ *
+ * 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.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include <sound/pcm_params.h>
+
+#include "tfa9879.h"
+
+struct tfa9879_priv {
+ struct regmap *regmap;
+ int lsb_justified;
+};
+
+static int tfa9879_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 tfa9879_priv *tfa9879 = snd_soc_codec_get_drvdata(codec);
+ int fs;
+ int i2s_set = 0;
+
+ switch (params_rate(params)) {
+ case 8000:
+ fs = TFA9879_I2S_FS_8000;
+ break;
+ case 11025:
+ fs = TFA9879_I2S_FS_11025;
+ break;
+ case 12000:
+ fs = TFA9879_I2S_FS_12000;
+ break;
+ case 16000:
+ fs = TFA9879_I2S_FS_16000;
+ break;
+ case 22050:
+ fs = TFA9879_I2S_FS_22050;
+ break;
+ case 24000:
+ fs = TFA9879_I2S_FS_24000;
+ break;
+ case 32000:
+ fs = TFA9879_I2S_FS_32000;
+ break;
+ case 44100:
+ fs = TFA9879_I2S_FS_44100;
+ break;
+ case 48000:
+ fs = TFA9879_I2S_FS_48000;
+ break;
+ case 64000:
+ fs = TFA9879_I2S_FS_64000;
+ break;
+ case 88200:
+ fs = TFA9879_I2S_FS_88200;
+ break;
+ case 96000:
+ fs = TFA9879_I2S_FS_96000;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (params_width(params)) {
+ case 16:
+ i2s_set = TFA9879_I2S_SET_LSB_J_16;
+ break;
+ case 24:
+ i2s_set = TFA9879_I2S_SET_LSB_J_24;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (tfa9879->lsb_justified)
+ snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
+ TFA9879_I2S_SET_MASK,
+ i2s_set << TFA9879_I2S_SET_SHIFT);
+
+ snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
+ TFA9879_I2S_FS_MASK,
+ fs << TFA9879_I2S_FS_SHIFT);
+ return 0;
+}
+
+static int tfa9879_digital_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_codec *codec = dai->codec;
+
+ snd_soc_update_bits(codec, TFA9879_MISC_CONTROL,
+ TFA9879_S_MUTE_MASK,
+ !!mute << TFA9879_S_MUTE_SHIFT);
+
+ return 0;
+}
+
+static int tfa9879_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct tfa9879_priv *tfa9879 = snd_soc_codec_get_drvdata(codec);
+ int i2s_set;
+ int sck_pol;
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBS_CFS:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ sck_pol = TFA9879_SCK_POL_NORMAL;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ sck_pol = TFA9879_SCK_POL_INVERSE;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ tfa9879->lsb_justified = 0;
+ i2s_set = TFA9879_I2S_SET_I2S_24;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ tfa9879->lsb_justified = 0;
+ i2s_set = TFA9879_I2S_SET_MSB_J_24;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ tfa9879->lsb_justified = 1;
+ i2s_set = TFA9879_I2S_SET_LSB_J_24;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
+ TFA9879_SCK_POL_MASK,
+ sck_pol << TFA9879_SCK_POL_SHIFT);
+ snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
+ TFA9879_I2S_SET_MASK,
+ i2s_set << TFA9879_I2S_SET_SHIFT);
+ return 0;
+}
+
+static struct reg_default tfa9879_regs[] = {
+ { TFA9879_DEVICE_CONTROL, 0x0000 }, /* 0x00 */
+ { TFA9879_SERIAL_INTERFACE_1, 0x0a18 }, /* 0x01 */
+ { TFA9879_PCM_IOM2_FORMAT_1, 0x0007 }, /* 0x02 */
+ { TFA9879_SERIAL_INTERFACE_2, 0x0a18 }, /* 0x03 */
+ { TFA9879_PCM_IOM2_FORMAT_2, 0x0007 }, /* 0x04 */
+ { TFA9879_EQUALIZER_A1, 0x59dd }, /* 0x05 */
+ { TFA9879_EQUALIZER_A2, 0xc63e }, /* 0x06 */
+ { TFA9879_EQUALIZER_B1, 0x651a }, /* 0x07 */
+ { TFA9879_EQUALIZER_B2, 0xe53e }, /* 0x08 */
+ { TFA9879_EQUALIZER_C1, 0x4616 }, /* 0x09 */
+ { TFA9879_EQUALIZER_C2, 0xd33e }, /* 0x0a */
+ { TFA9879_EQUALIZER_D1, 0x4df3 }, /* 0x0b */
+ { TFA9879_EQUALIZER_D2, 0xea3e }, /* 0x0c */
+ { TFA9879_EQUALIZER_E1, 0x5ee0 }, /* 0x0d */
+ { TFA9879_EQUALIZER_E2, 0xf93e }, /* 0x0e */
+ { TFA9879_BYPASS_CONTROL, 0x0093 }, /* 0x0f */
+ { TFA9879_DYNAMIC_RANGE_COMPR, 0x92ba }, /* 0x10 */
+ { TFA9879_BASS_TREBLE, 0x12a5 }, /* 0x11 */
+ { TFA9879_HIGH_PASS_FILTER, 0x0004 }, /* 0x12 */
+ { TFA9879_VOLUME_CONTROL, 0x10bd }, /* 0x13 */
+ { TFA9879_MISC_CONTROL, 0x0000 }, /* 0x14 */
+};
+
+static bool tfa9879_volatile_reg(struct device *dev, unsigned int reg)
+{
+ return reg == TFA9879_MISC_STATUS;
+}
+
+static const DECLARE_TLV_DB_SCALE(volume_tlv, -7050, 50, 1);
+static const DECLARE_TLV_DB_SCALE(tb_gain_tlv, -1800, 200, 0);
+static const char * const tb_freq_text[] = {
+ "Low", "Mid", "High"
+};
+static const struct soc_enum treble_freq_enum =
+ SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_TRBLE_SHIFT,
+ ARRAY_SIZE(tb_freq_text), tb_freq_text);
+static const struct soc_enum bass_freq_enum =
+ SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_BASS_SHIFT,
+ ARRAY_SIZE(tb_freq_text), tb_freq_text);
+
+static const struct snd_kcontrol_new tfa9879_controls[] = {
+ SOC_SINGLE_TLV("PCM Playback Volume", TFA9879_VOLUME_CONTROL,
+ TFA9879_VOL_SHIFT, 0xbd, 1, volume_tlv),
+ SOC_SINGLE_TLV("Treble Volume", TFA9879_BASS_TREBLE,
+ TFA9879_G_TRBLE_SHIFT, 18, 0, tb_gain_tlv),
+ SOC_SINGLE_TLV("Bass Volume", TFA9879_BASS_TREBLE,
+ TFA9879_G_BASS_SHIFT, 18, 0, tb_gain_tlv),
+ SOC_ENUM("Treble Corner Freq", treble_freq_enum),
+ SOC_ENUM("Bass Corner Freq", bass_freq_enum),
+};
+
+static const struct snd_soc_dapm_widget tfa9879_dapm_widgets[] = {
+SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
+SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
+SND_SOC_DAPM_DAC("DAC", NULL, TFA9879_DEVICE_CONTROL, TFA9879_OPMODE_SHIFT, 0),
+SND_SOC_DAPM_OUTPUT("LINEOUT"),
+SND_SOC_DAPM_SUPPLY("POWER", TFA9879_DEVICE_CONTROL, TFA9879_POWERUP_SHIFT, 0,
+ NULL, 0),
+};
+
+static const struct snd_soc_dapm_route tfa9879_dapm_routes[] = {
+ { "DAC", NULL, "AIFINL" },
+ { "DAC", NULL, "AIFINR" },
+
+ { "LINEOUT", NULL, "DAC" },
+
+ { "DAC", NULL, "POWER" },
+};
+
+static const struct snd_soc_codec_driver tfa9879_codec = {
+ .controls = tfa9879_controls,
+ .num_controls = ARRAY_SIZE(tfa9879_controls),
+
+ .dapm_widgets = tfa9879_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(tfa9879_dapm_widgets),
+ .dapm_routes = tfa9879_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(tfa9879_dapm_routes),
+};
+
+static const struct regmap_config tfa9879_regmap = {
+ .reg_bits = 8,
+ .val_bits = 16,
+
+ .volatile_reg = tfa9879_volatile_reg,
+ .max_register = TFA9879_MISC_STATUS,
+ .reg_defaults = tfa9879_regs,
+ .num_reg_defaults = ARRAY_SIZE(tfa9879_regs),
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static const struct snd_soc_dai_ops tfa9879_dai_ops = {
+ .hw_params = tfa9879_hw_params,
+ .digital_mute = tfa9879_digital_mute,
+ .set_fmt = tfa9879_set_fmt,
+};
+
+#define TFA9879_RATES SNDRV_PCM_RATE_8000_96000
+
+#define TFA9879_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S24_LE)
+
+static struct snd_soc_dai_driver tfa9879_dai = {
+ .name = "tfa9879-hifi",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = TFA9879_RATES,
+ .formats = TFA9879_FORMATS, },
+ .ops = &tfa9879_dai_ops,
+};
+
+static int tfa9879_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct tfa9879_priv *tfa9879;
+ int i;
+
+ tfa9879 = devm_kzalloc(&i2c->dev, sizeof(*tfa9879), GFP_KERNEL);
+ if (!tfa9879)
+ return -ENOMEM;
+
+ i2c_set_clientdata(i2c, tfa9879);
+
+ tfa9879->regmap = devm_regmap_init_i2c(i2c, &tfa9879_regmap);
+ if (IS_ERR(tfa9879->regmap))
+ return PTR_ERR(tfa9879->regmap);
+
+ /* Ensure the device is in reset state */
+ for (i = 0; i < ARRAY_SIZE(tfa9879_regs); i++)
+ regmap_write(tfa9879->regmap,
+ tfa9879_regs[i].reg, tfa9879_regs[i].def);
+
+ return snd_soc_register_codec(&i2c->dev, &tfa9879_codec,
+ &tfa9879_dai, 1);
+}
+
+static int tfa9879_i2c_remove(struct i2c_client *client)
+{
+ snd_soc_unregister_codec(&client->dev);
+
+ return 0;
+}
+
+static const struct i2c_device_id tfa9879_i2c_id[] = {
+ { "tfa9879", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id);
+
+static struct i2c_driver tfa9879_i2c_driver = {
+ .driver = {
+ .name = "tfa9879",
+ .owner = THIS_MODULE,
+ },
+ .probe = tfa9879_i2c_probe,
+ .remove = tfa9879_i2c_remove,
+ .id_table = tfa9879_i2c_id,
+};
+
+module_i2c_driver(tfa9879_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC NXP Semiconductors TFA9879 driver");
+MODULE_AUTHOR("Peter Rosin <peda@axentia.se>");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff