--- /dev/null
+/*
+ * ASoC Driver for I-Sabre Q2M
+ *
+ * Author: Satoru Kawase
+ * Modified by: Xiao Qingyong
+ * Update kernel v4.18+ by : Audiophonics
+ * Copyright 2018 Audiophonics
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/fs.h>
+#include <asm/uaccess.h>
+#include <sound/core.h>
+#include <sound/soc.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+
+#include "../codecs/i-sabre-codec.h"
+
+
+static int snd_rpi_i_sabre_q2m_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_component *component = rtd->codec_dai->component;
+ unsigned int value;
+
+ /* Device ID */
+ value = snd_soc_component_read32(component, ISABRECODEC_REG_01);
+ dev_info(component->card->dev, "Audiophonics Device ID : %02X\n", value);
+
+ /* API revision */
+ value = snd_soc_component_read32(component, ISABRECODEC_REG_02);
+ dev_info(component->card->dev, "Audiophonics API revision : %02X\n", value);
+
+ return 0;
+}
+
+static int snd_rpi_i_sabre_q2m_hw_params(
+ struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ int bclk_ratio;
+
+ bclk_ratio = snd_pcm_format_physical_width(
+ params_format(params)) * params_channels(params);
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, bclk_ratio);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_i_sabre_q2m_ops = {
+ .hw_params = snd_rpi_i_sabre_q2m_hw_params,
+};
+
+SND_SOC_DAILINK_DEFS(rpi_i_sabre_q2m,
+ DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
+ DAILINK_COMP_ARRAY(COMP_CODEC("i-sabre-codec-i2c.1-0048", "i-sabre-codec-dai")),
+ DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
+
+static struct snd_soc_dai_link snd_rpi_i_sabre_q2m_dai[] = {
+ {
+ .name = "I-Sabre Q2M",
+ .stream_name = "I-Sabre Q2M DAC",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBS_CFS,
+ .init = snd_rpi_i_sabre_q2m_init,
+ .ops = &snd_rpi_i_sabre_q2m_ops,
+ SND_SOC_DAILINK_REG(rpi_i_sabre_q2m),
+ }
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_i_sabre_q2m = {
+ .name = "I-Sabre Q2M DAC",
+ .owner = THIS_MODULE,
+ .dai_link = snd_rpi_i_sabre_q2m_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_i_sabre_q2m_dai)
+};
+
+
+static int snd_rpi_i_sabre_q2m_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ snd_rpi_i_sabre_q2m.dev = &pdev->dev;
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai;
+
+ dai = &snd_rpi_i_sabre_q2m_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+ if (i2s_node) {
+ dai->cpus->dai_name = NULL;
+ dai->cpus->of_node = i2s_node;
+ dai->platforms->name = NULL;
+ dai->platforms->of_node = i2s_node;
+ } else {
+ dev_err(&pdev->dev,
+ "Property 'i2s-controller' missing or invalid\n");
+ return (-EINVAL);
+ }
+
+ dai->name = "I-Sabre Q2M";
+ dai->stream_name = "I-Sabre Q2M DAC";
+ dai->dai_fmt = SND_SOC_DAIFMT_I2S
+ | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBS_CFS;
+ }
+
+ /* Wait for registering codec driver */
+ mdelay(50);
+
+ ret = snd_soc_register_card(&snd_rpi_i_sabre_q2m);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "snd_soc_register_card() failed: %d\n", ret);
+ }
+
+ return ret;
+}
+
+static int snd_rpi_i_sabre_q2m_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_rpi_i_sabre_q2m);
+}
+
+static const struct of_device_id snd_rpi_i_sabre_q2m_of_match[] = {
+ { .compatible = "audiophonics,i-sabre-q2m", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_i_sabre_q2m_of_match);
+
+static struct platform_driver snd_rpi_i_sabre_q2m_driver = {
+ .driver = {
+ .name = "snd-rpi-i-sabre-q2m",
+ .owner = THIS_MODULE,
+ .of_match_table = snd_rpi_i_sabre_q2m_of_match,
+ },
+ .probe = snd_rpi_i_sabre_q2m_probe,
+ .remove = snd_rpi_i_sabre_q2m_remove,
+};
+module_platform_driver(snd_rpi_i_sabre_q2m_driver);
+
+MODULE_DESCRIPTION("ASoC Driver for I-Sabre Q2M");
+MODULE_AUTHOR("Audiophonics <http://www.audiophonics.fr>");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Driver for I-Sabre Q2M
+ *
+ * Author: Satoru Kawase
+ * Modified by: Xiao Qingyong
+ * Modified by: JC BARBAUD (Mute)
+ * Update kernel v4.18+ by : Audiophonics
+ * Copyright 2018 Audiophonics
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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/init.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/i2c.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+#include <sound/tlv.h>
+
+#include "i-sabre-codec.h"
+
+
+/* I-Sabre Q2M Codec Private Data */
+struct i_sabre_codec_priv {
+ struct regmap *regmap;
+ unsigned int fmt;
+};
+
+
+/* I-Sabre Q2M Codec Default Register Value */
+static const struct reg_default i_sabre_codec_reg_defaults[] = {
+ { ISABRECODEC_REG_10, 0x00 },
+ { ISABRECODEC_REG_20, 0x00 },
+ { ISABRECODEC_REG_21, 0x00 },
+ { ISABRECODEC_REG_22, 0x00 },
+ { ISABRECODEC_REG_24, 0x00 },
+};
+
+
+static bool i_sabre_codec_writeable(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case ISABRECODEC_REG_10:
+ case ISABRECODEC_REG_20:
+ case ISABRECODEC_REG_21:
+ case ISABRECODEC_REG_22:
+ case ISABRECODEC_REG_24:
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+static bool i_sabre_codec_readable(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case ISABRECODEC_REG_01:
+ case ISABRECODEC_REG_02:
+ case ISABRECODEC_REG_10:
+ case ISABRECODEC_REG_20:
+ case ISABRECODEC_REG_21:
+ case ISABRECODEC_REG_22:
+ case ISABRECODEC_REG_24:
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+static bool i_sabre_codec_volatile(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case ISABRECODEC_REG_01:
+ case ISABRECODEC_REG_02:
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+
+/* Volume Scale */
+static const DECLARE_TLV_DB_SCALE(volume_tlv, -10000, 100, 0);
+
+
+/* Filter Type */
+static const char * const fir_filter_type_texts[] = {
+ "brick wall",
+ "corrected minimum phase fast",
+ "minimum phase slow",
+ "minimum phase fast",
+ "linear phase slow",
+ "linear phase fast",
+ "apodizing fast",
+};
+
+static SOC_ENUM_SINGLE_DECL(i_sabre_fir_filter_type_enum,
+ ISABRECODEC_REG_22, 0, fir_filter_type_texts);
+
+
+/* I2S / SPDIF Select */
+static const char * const iis_spdif_sel_texts[] = {
+ "I2S",
+ "SPDIF",
+};
+
+static SOC_ENUM_SINGLE_DECL(i_sabre_iis_spdif_sel_enum,
+ ISABRECODEC_REG_24, 0, iis_spdif_sel_texts);
+
+
+/* Control */
+static const struct snd_kcontrol_new i_sabre_codec_controls[] = {
+SOC_SINGLE_RANGE_TLV("Digital Playback Volume", ISABRECODEC_REG_20, 0, 0, 100, 1, volume_tlv),
+SOC_SINGLE("Digital Playback Switch", ISABRECODEC_REG_21, 0, 1, 1),
+SOC_ENUM("FIR Filter Type", i_sabre_fir_filter_type_enum),
+SOC_ENUM("I2S/SPDIF Select", i_sabre_iis_spdif_sel_enum),
+};
+
+
+static const u32 i_sabre_codec_dai_rates_slave[] = {
+ 8000, 11025, 16000, 22050, 32000,
+ 44100, 48000, 64000, 88200, 96000,
+ 176400, 192000, 352800, 384000,
+ 705600, 768000, 1411200, 1536000
+};
+
+static const struct snd_pcm_hw_constraint_list constraints_slave = {
+ .list = i_sabre_codec_dai_rates_slave,
+ .count = ARRAY_SIZE(i_sabre_codec_dai_rates_slave),
+};
+
+static int i_sabre_codec_dai_startup_slave(
+ struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ int ret;
+
+ ret = snd_pcm_hw_constraint_list(substream->runtime,
+ 0, SNDRV_PCM_HW_PARAM_RATE, &constraints_slave);
+ if (ret != 0) {
+ dev_err(component->card->dev, "Failed to setup rates constraints: %d\n", ret);
+ }
+
+ return ret;
+}
+
+static int i_sabre_codec_dai_startup(
+ struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct i_sabre_codec_priv *i_sabre_codec
+ = snd_soc_component_get_drvdata(component);
+
+ switch (i_sabre_codec->fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBS_CFS:
+ return i_sabre_codec_dai_startup_slave(substream, dai);
+
+ default:
+ return (-EINVAL);
+ }
+}
+
+static int i_sabre_codec_hw_params(
+ struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct i_sabre_codec_priv *i_sabre_codec
+ = snd_soc_component_get_drvdata(component);
+ unsigned int daifmt;
+ int format_width;
+
+ dev_dbg(component->card->dev, "hw_params %u Hz, %u channels\n",
+ params_rate(params), params_channels(params));
+
+ /* Check I2S Format (Bit Size) */
+ format_width = snd_pcm_format_width(params_format(params));
+ if ((format_width != 32) && (format_width != 16)) {
+ dev_err(component->card->dev, "Bad frame size: %d\n",
+ snd_pcm_format_width(params_format(params)));
+ return (-EINVAL);
+ }
+
+ /* Check Slave Mode */
+ daifmt = i_sabre_codec->fmt & SND_SOC_DAIFMT_MASTER_MASK;
+ if (daifmt != SND_SOC_DAIFMT_CBS_CFS) {
+ return (-EINVAL);
+ }
+
+ /* Notify Sampling Frequency */
+ switch (params_rate(params))
+ {
+ case 44100:
+ case 48000:
+ case 88200:
+ case 96000:
+ case 176400:
+ case 192000:
+ snd_soc_component_update_bits(component, ISABRECODEC_REG_10, 0x01, 0x00);
+ break;
+
+ case 352800:
+ case 384000:
+ case 705600:
+ case 768000:
+ case 1411200:
+ case 1536000:
+ snd_soc_component_update_bits(component, ISABRECODEC_REG_10, 0x01, 0x01);
+ break;
+ }
+
+ return 0;
+}
+
+static int i_sabre_codec_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct snd_soc_component *component = dai->component;
+ struct i_sabre_codec_priv *i_sabre_codec
+ = snd_soc_component_get_drvdata(component);
+
+ /* interface format */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ break;
+
+ case SND_SOC_DAIFMT_RIGHT_J:
+ case SND_SOC_DAIFMT_LEFT_J:
+ default:
+ return (-EINVAL);
+ }
+
+ /* clock inversion */
+ if ((fmt & SND_SOC_DAIFMT_INV_MASK) != SND_SOC_DAIFMT_NB_NF) {
+ return (-EINVAL);
+ }
+
+ /* Set Audio Data Format */
+ i_sabre_codec->fmt = fmt;
+
+ return 0;
+}
+
+static int i_sabre_codec_dac_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_component *component = dai->component;
+
+ if (mute) {
+ snd_soc_component_update_bits(component, ISABRECODEC_REG_21, 0x01, 0x01);
+ } else {
+ snd_soc_component_update_bits(component, ISABRECODEC_REG_21, 0x01, 0x00);
+ }
+
+ return 0;
+}
+
+
+static const struct snd_soc_dai_ops i_sabre_codec_dai_ops = {
+ .startup = i_sabre_codec_dai_startup,
+ .hw_params = i_sabre_codec_hw_params,
+ .set_fmt = i_sabre_codec_set_fmt,
+ .digital_mute = i_sabre_codec_dac_mute,
+};
+
+static struct snd_soc_dai_driver i_sabre_codec_dai = {
+ .name = "i-sabre-codec-dai",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 8000,
+ .rate_max = 1536000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE
+ | SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .ops = &i_sabre_codec_dai_ops,
+};
+
+static struct snd_soc_component_driver i_sabre_codec_codec_driver = {
+ .controls = i_sabre_codec_controls,
+ .num_controls = ARRAY_SIZE(i_sabre_codec_controls),
+};
+
+
+static const struct regmap_config i_sabre_codec_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = ISABRECODEC_MAX_REG,
+
+ .reg_defaults = i_sabre_codec_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(i_sabre_codec_reg_defaults),
+
+ .writeable_reg = i_sabre_codec_writeable,
+ .readable_reg = i_sabre_codec_readable,
+ .volatile_reg = i_sabre_codec_volatile,
+
+ .cache_type = REGCACHE_RBTREE,
+};
+
+
+static int i_sabre_codec_probe(struct device *dev, struct regmap *regmap)
+{
+ struct i_sabre_codec_priv *i_sabre_codec;
+ int ret;
+
+ i_sabre_codec = devm_kzalloc(dev, sizeof(*i_sabre_codec), GFP_KERNEL);
+ if (!i_sabre_codec) {
+ dev_err(dev, "devm_kzalloc");
+ return (-ENOMEM);
+ }
+
+ i_sabre_codec->regmap = regmap;
+
+ dev_set_drvdata(dev, i_sabre_codec);
+
+ ret = snd_soc_register_component(dev,
+ &i_sabre_codec_codec_driver, &i_sabre_codec_dai, 1);
+ if (ret != 0) {
+ dev_err(dev, "Failed to register CODEC: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void i_sabre_codec_remove(struct device *dev)
+{
+ snd_soc_unregister_component(dev);
+}
+
+
+static int i_sabre_codec_i2c_probe(
+ struct i2c_client *i2c, const struct i2c_device_id *id)
+{
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_i2c(i2c, &i_sabre_codec_regmap);
+ if (IS_ERR(regmap)) {
+ return PTR_ERR(regmap);
+ }
+
+ return i_sabre_codec_probe(&i2c->dev, regmap);
+}
+
+static int i_sabre_codec_i2c_remove(struct i2c_client *i2c)
+{
+ i_sabre_codec_remove(&i2c->dev);
+
+ return 0;
+}
+
+
+static const struct i2c_device_id i_sabre_codec_i2c_id[] = {
+ { "i-sabre-codec", },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, i_sabre_codec_i2c_id);
+
+static const struct of_device_id i_sabre_codec_of_match[] = {
+ { .compatible = "audiophonics,i-sabre-codec", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, i_sabre_codec_of_match);
+
+static struct i2c_driver i_sabre_codec_i2c_driver = {
+ .driver = {
+ .name = "i-sabre-codec-i2c",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(i_sabre_codec_of_match),
+ },
+ .probe = i_sabre_codec_i2c_probe,
+ .remove = i_sabre_codec_i2c_remove,
+ .id_table = i_sabre_codec_i2c_id,
+};
+module_i2c_driver(i_sabre_codec_i2c_driver);
+
+
+MODULE_DESCRIPTION("ASoC I-Sabre Q2M codec driver");
+MODULE_AUTHOR("Audiophonics <http://www.audiophonics.fr>");
+MODULE_LICENSE("GPL");
projects / platform / kernel / linux-rpi.git / commitdiff