aboutsummaryrefslogtreecommitdiffstats
path: root/sound/soc/codecs/pcm1792a.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/soc/codecs/pcm1792a.c')
-rw-r--r--sound/soc/codecs/pcm1792a.c271
1 files changed, 0 insertions, 271 deletions
diff --git a/sound/soc/codecs/pcm1792a.c b/sound/soc/codecs/pcm1792a.c
deleted file mode 100644
index 08bb4863e96f..000000000000
--- a/sound/soc/codecs/pcm1792a.c
+++ /dev/null
@@ -1,271 +0,0 @@
-/*
- * PCM1792A ASoC codec driver
- *
- * Copyright (c) Amarula Solutions B.V. 2013
- *
- * Michael Trimarchi <michael@amarulasolutions.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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/spi/spi.h>
-
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/initval.h>
-#include <sound/soc.h>
-#include <sound/tlv.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-
-#include "pcm1792a.h"
-
-#define PCM1792A_DAC_VOL_LEFT 0x10
-#define PCM1792A_DAC_VOL_RIGHT 0x11
-#define PCM1792A_FMT_CONTROL 0x12
-#define PCM1792A_MODE_CONTROL 0x13
-#define PCM1792A_SOFT_MUTE PCM1792A_FMT_CONTROL
-
-#define PCM1792A_FMT_MASK 0x70
-#define PCM1792A_FMT_SHIFT 4
-#define PCM1792A_MUTE_MASK 0x01
-#define PCM1792A_MUTE_SHIFT 0
-#define PCM1792A_ATLD_ENABLE (1 << 7)
-
-static const struct reg_default pcm1792a_reg_defaults[] = {
- { 0x10, 0xff },
- { 0x11, 0xff },
- { 0x12, 0x50 },
- { 0x13, 0x00 },
- { 0x14, 0x00 },
- { 0x15, 0x01 },
- { 0x16, 0x00 },
- { 0x17, 0x00 },
-};
-
-static bool pcm1792a_accessible_reg(struct device *dev, unsigned int reg)
-{
- return reg >= 0x10 && reg <= 0x17;
-}
-
-static bool pcm1792a_writeable_reg(struct device *dev, unsigned register reg)
-{
- bool accessible;
-
- accessible = pcm1792a_accessible_reg(dev, reg);
-
- return accessible && reg != 0x16 && reg != 0x17;
-}
-
-struct pcm1792a_private {
- struct regmap *regmap;
- unsigned int format;
- unsigned int rate;
-};
-
-static int pcm1792a_set_dai_fmt(struct snd_soc_dai *codec_dai,
- unsigned int format)
-{
- struct snd_soc_codec *codec = codec_dai->codec;
- struct pcm1792a_private *priv = snd_soc_codec_get_drvdata(codec);
-
- priv->format = format;
-
- return 0;
-}
-
-static int pcm1792a_digital_mute(struct snd_soc_dai *dai, int mute)
-{
- struct snd_soc_codec *codec = dai->codec;
- struct pcm1792a_private *priv = snd_soc_codec_get_drvdata(codec);
- int ret;
-
- ret = regmap_update_bits(priv->regmap, PCM1792A_SOFT_MUTE,
- PCM1792A_MUTE_MASK, !!mute);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-static int pcm1792a_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 pcm1792a_private *priv = snd_soc_codec_get_drvdata(codec);
- int val = 0, ret;
-
- priv->rate = params_rate(params);
-
- switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
- case SND_SOC_DAIFMT_RIGHT_J:
- switch (params_width(params)) {
- case 24:
- case 32:
- val = 2;
- break;
- case 16:
- val = 0;
- break;
- default:
- return -EINVAL;
- }
- break;
- case SND_SOC_DAIFMT_I2S:
- switch (params_width(params)) {
- case 24:
- case 32:
- val = 5;
- break;
- case 16:
- val = 4;
- break;
- default:
- return -EINVAL;
- }
- break;
- default:
- dev_err(codec->dev, "Invalid DAI format\n");
- return -EINVAL;
- }
-
- val = val << PCM1792A_FMT_SHIFT | PCM1792A_ATLD_ENABLE;
-
- ret = regmap_update_bits(priv->regmap, PCM1792A_FMT_CONTROL,
- PCM1792A_FMT_MASK | PCM1792A_ATLD_ENABLE, val);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-static const struct snd_soc_dai_ops pcm1792a_dai_ops = {
- .set_fmt = pcm1792a_set_dai_fmt,
- .hw_params = pcm1792a_hw_params,
- .digital_mute = pcm1792a_digital_mute,
-};
-
-static const DECLARE_TLV_DB_SCALE(pcm1792a_dac_tlv, -12000, 50, 1);
-
-static const struct snd_kcontrol_new pcm1792a_controls[] = {
- SOC_DOUBLE_R_RANGE_TLV("DAC Playback Volume", PCM1792A_DAC_VOL_LEFT,
- PCM1792A_DAC_VOL_RIGHT, 0, 0xf, 0xff, 0,
- pcm1792a_dac_tlv),
- SOC_SINGLE("DAC Invert Output Switch", PCM1792A_MODE_CONTROL, 7, 1, 0),
- SOC_SINGLE("DAC Rolloff Filter Switch", PCM1792A_MODE_CONTROL, 1, 1, 0),
-};
-
-static const struct snd_soc_dapm_widget pcm1792a_dapm_widgets[] = {
-SND_SOC_DAPM_OUTPUT("IOUTL+"),
-SND_SOC_DAPM_OUTPUT("IOUTL-"),
-SND_SOC_DAPM_OUTPUT("IOUTR+"),
-SND_SOC_DAPM_OUTPUT("IOUTR-"),
-};
-
-static const struct snd_soc_dapm_route pcm1792a_dapm_routes[] = {
- { "IOUTL+", NULL, "Playback" },
- { "IOUTL-", NULL, "Playback" },
- { "IOUTR+", NULL, "Playback" },
- { "IOUTR-", NULL, "Playback" },
-};
-
-static struct snd_soc_dai_driver pcm1792a_dai = {
- .name = "pcm1792a-hifi",
- .playback = {
- .stream_name = "Playback",
- .channels_min = 2,
- .channels_max = 2,
- .rates = PCM1792A_RATES,
- .formats = PCM1792A_FORMATS, },
- .ops = &pcm1792a_dai_ops,
-};
-
-static const struct of_device_id pcm1792a_of_match[] = {
- { .compatible = "ti,pcm1792a", },
- { }
-};
-MODULE_DEVICE_TABLE(of, pcm1792a_of_match);
-
-static const struct regmap_config pcm1792a_regmap = {
- .reg_bits = 8,
- .val_bits = 8,
- .max_register = 23,
- .reg_defaults = pcm1792a_reg_defaults,
- .num_reg_defaults = ARRAY_SIZE(pcm1792a_reg_defaults),
- .writeable_reg = pcm1792a_writeable_reg,
- .readable_reg = pcm1792a_accessible_reg,
-};
-
-static struct snd_soc_codec_driver soc_codec_dev_pcm1792a = {
- .controls = pcm1792a_controls,
- .num_controls = ARRAY_SIZE(pcm1792a_controls),
- .dapm_widgets = pcm1792a_dapm_widgets,
- .num_dapm_widgets = ARRAY_SIZE(pcm1792a_dapm_widgets),
- .dapm_routes = pcm1792a_dapm_routes,
- .num_dapm_routes = ARRAY_SIZE(pcm1792a_dapm_routes),
-};
-
-static int pcm1792a_spi_probe(struct spi_device *spi)
-{
- struct pcm1792a_private *pcm1792a;
- int ret;
-
- pcm1792a = devm_kzalloc(&spi->dev, sizeof(struct pcm1792a_private),
- GFP_KERNEL);
- if (!pcm1792a)
- return -ENOMEM;
-
- spi_set_drvdata(spi, pcm1792a);
-
- pcm1792a->regmap = devm_regmap_init_spi(spi, &pcm1792a_regmap);
- if (IS_ERR(pcm1792a->regmap)) {
- ret = PTR_ERR(pcm1792a->regmap);
- dev_err(&spi->dev, "Failed to register regmap: %d\n", ret);
- return ret;
- }
-
- return snd_soc_register_codec(&spi->dev,
- &soc_codec_dev_pcm1792a, &pcm1792a_dai, 1);
-}
-
-static int pcm1792a_spi_remove(struct spi_device *spi)
-{
- snd_soc_unregister_codec(&spi->dev);
- return 0;
-}
-
-static const struct spi_device_id pcm1792a_spi_ids[] = {
- { "pcm1792a", 0 },
- { },
-};
-MODULE_DEVICE_TABLE(spi, pcm1792a_spi_ids);
-
-static struct spi_driver pcm1792a_codec_driver = {
- .driver = {
- .name = "pcm1792a",
- .of_match_table = of_match_ptr(pcm1792a_of_match),
- },
- .id_table = pcm1792a_spi_ids,
- .probe = pcm1792a_spi_probe,
- .remove = pcm1792a_spi_remove,
-};
-
-module_spi_driver(pcm1792a_codec_driver);
-
-MODULE_DESCRIPTION("ASoC PCM1792A driver");
-MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>");
-MODULE_LICENSE("GPL");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.