+++ /dev/null
-From e740bd2cc3fcd632fcd6c8881b1fc671bcde5914 Mon Sep 17 00:00:00 2001
-From: dev-3Dlab <45081440+dev-3Dlab@users.noreply.github.com>
-Date: Wed, 5 Dec 2018 10:59:11 +0100
-Subject: [PATCH] ASoC: add driver for 3Dlab Nano soundcard (#2758)
-
-Signed-off-by: GT <dev@3d-lab-av.com>
----
- .../overlays/3dlab-nano-player-overlay.dts | 32 ++
- arch/arm/boot/dts/overlays/Makefile | 1 +
- arch/arm/boot/dts/overlays/README | 6 +
- sound/soc/bcm/3dlab-nano-player.c | 370 ++++++++++++++++++
- sound/soc/bcm/Kconfig | 6 +
- sound/soc/bcm/Makefile | 2 +
- 8 files changed, 419 insertions(+)
- create mode 100644 arch/arm/boot/dts/overlays/3dlab-nano-player-overlay.dts
- create mode 100644 sound/soc/bcm/3dlab-nano-player.c
-
---- /dev/null
-+++ b/arch/arm/boot/dts/overlays/3dlab-nano-player-overlay.dts
-@@ -0,0 +1,32 @@
-+// Definitions for 3Dlab Nano Player
-+/dts-v1/;
-+/plugin/;
-+
-+/ {
-+ compatible = "brcm,bcm2708";
-+
-+ fragment@0 {
-+ target = <&i2s>;
-+ __overlay__ {
-+ status = "okay";
-+ };
-+ };
-+
-+ fragment@1 {
-+ target = <&i2c>;
-+ __overlay__ {
-+ #address-cells = <1>;
-+ #size-cells = <0>;
-+ status = "okay";
-+
-+ nano-player@41 {
-+ compatible = "3dlab,nano-player";
-+ reg = <0x41>;
-+ i2s-controller = <&i2s>;
-+ status = "okay";
-+ };
-+ };
-+ };
-+};
-+
-+// EOF
---- a/arch/arm/boot/dts/overlays/Makefile
-+++ b/arch/arm/boot/dts/overlays/Makefile
-@@ -1,6 +1,7 @@
- # Overlays for the Raspberry Pi platform
-
- dtbo-$(CONFIG_ARCH_BCM2835) += \
-+ 3dlab-nano-player.dtbo \
- adau1977-adc.dtbo \
- adau7002-simple.dtbo \
- ads1015.dtbo \
---- a/arch/arm/boot/dts/overlays/README
-+++ b/arch/arm/boot/dts/overlays/README
-@@ -199,6 +199,12 @@ Params:
- and the other i2c baudrate parameters.
-
-
-+Name: 3dlab-nano-player
-+Info: Configures the 3Dlab Nano Player
-+Load: dtoverlay=3dlab-nano-player
-+Params: <None>
-+
-+
- Name: adau1977-adc
- Info: Overlay for activation of ADAU1977 ADC codec over I2C for control
- and I2S for data.
---- /dev/null
-+++ b/sound/soc/bcm/3dlab-nano-player.c
-@@ -0,0 +1,370 @@
-+/*
-+ * 3Dlab Nano Player ALSA SoC Audio driver.
-+ *
-+ * Copyright (C) 2018 3Dlab.
-+ *
-+ * Author: GT <dev@3d-lab-av.com>
-+ *
-+ * 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/module.h>
-+#include <linux/i2c.h>
-+#include <sound/soc.h>
-+#include <sound/pcm.h>
-+#include <sound/pcm_params.h>
-+#include <sound/control.h>
-+
-+#define NANO_ID 0x00
-+#define NANO_VER 0x01
-+#define NANO_CFG 0x02
-+#define NANO_STATUS 0x03
-+#define NANO_SPI_ADDR 0x04
-+#define NANO_SPI_DATA 0x05
-+
-+#define NANO_ID_VAL 0x3D
-+#define NANO_CFG_OFF 0x00
-+#define NANO_CFG_MULT1 0
-+#define NANO_CFG_MULT2 1
-+#define NANO_CFG_MULT4 2
-+#define NANO_CFG_MULT8 3
-+#define NANO_CFG_MULT16 4
-+#define NANO_CFG_CLK22 0
-+#define NANO_CFG_CLK24 BIT(3)
-+#define NANO_CFG_DSD BIT(4)
-+#define NANO_CFG_ENA BIT(5)
-+#define NANO_CFG_BLINK BIT(6)
-+#define NANO_STATUS_P1 BIT(0)
-+#define NANO_STATUS_P2 BIT(1)
-+#define NANO_STATUS_FLG BIT(2)
-+#define NANO_STATUS_CLK BIT(3)
-+#define NANO_SPI_READ 0
-+#define NANO_SPI_WRITE BIT(5)
-+
-+#define NANO_DAC_CTRL1 0x00
-+#define NANO_DAC_CTRL2 0x01
-+#define NANO_DAC_CTRL3 0x02
-+#define NANO_DAC_LATT 0x03
-+#define NANO_DAC_RATT 0x04
-+
-+#define NANO_CTRL2_VAL 0x22
-+
-+static int nano_player_spi_write(struct regmap *map,
-+ unsigned int reg, unsigned int val)
-+{
-+ /* indirect register access */
-+ regmap_write(map, NANO_SPI_DATA, val);
-+ regmap_write(map, NANO_SPI_ADDR, reg | NANO_SPI_WRITE);
-+ return 0;
-+}
-+
-+static int nano_player_ctrl_info(struct snd_kcontrol *kcontrol,
-+ struct snd_ctl_elem_info *uinfo)
-+{
-+ /* describe control element */
-+ if (strstr(kcontrol->id.name, "Volume")) {
-+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
-+ uinfo->count = 1;
-+ uinfo->value.integer.min = 0;
-+ uinfo->value.integer.max = 100;
-+ } else {
-+ uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
-+ uinfo->count = 1;
-+ uinfo->value.integer.min = 0;
-+ uinfo->value.integer.max = 1;
-+ }
-+
-+ return 0;
-+}
-+
-+static int nano_player_ctrl_put(struct snd_kcontrol *kcontrol,
-+ struct snd_ctl_elem_value *ucontrol)
-+{
-+ /* program control value to hardware */
-+ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
-+ struct regmap *regmap = snd_soc_card_get_drvdata(card);
-+
-+ if (strstr(kcontrol->id.name, "Volume")) {
-+ unsigned int vol = ucontrol->value.integer.value[0];
-+ unsigned int att = 255 - (2 * (100 - vol));
-+
-+ nano_player_spi_write(regmap, NANO_DAC_LATT, att);
-+ nano_player_spi_write(regmap, NANO_DAC_RATT, att);
-+ kcontrol->private_value = vol;
-+ } else {
-+ unsigned int mute = ucontrol->value.integer.value[0];
-+ unsigned int reg = NANO_CTRL2_VAL | mute;
-+
-+ nano_player_spi_write(regmap, NANO_DAC_CTRL2, reg);
-+ kcontrol->private_value = mute;
-+ }
-+ return 0;
-+}
-+
-+static int nano_player_ctrl_get(struct snd_kcontrol *kcontrol,
-+ struct snd_ctl_elem_value *ucontrol)
-+{
-+ /* return last programmed value */
-+ ucontrol->value.integer.value[0] = kcontrol->private_value;
-+ return 0;
-+}
-+
-+#define SOC_NANO_PLAYER_CTRL(xname) \
-+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
-+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \
-+ .info = nano_player_ctrl_info, \
-+ .put = nano_player_ctrl_put, \
-+ .get = nano_player_ctrl_get }
-+
-+static const struct snd_kcontrol_new nano_player_controls[] = {
-+ SOC_NANO_PLAYER_CTRL("Master Playback Volume"),
-+ SOC_NANO_PLAYER_CTRL("Master Playback Switch"),
-+};
-+
-+static const unsigned int nano_player_rates[] = {
-+ 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000,
-+ 705600, 768000 /* only possible with fast clocks */
-+};
-+
-+static struct snd_pcm_hw_constraint_list nano_player_constraint_rates = {
-+ .list = nano_player_rates,
-+ .count = ARRAY_SIZE(nano_player_rates),
-+};
-+
-+static int nano_player_init(struct snd_soc_pcm_runtime *rtd)
-+{
-+ struct snd_soc_card *card = rtd->card;
-+ struct regmap *regmap = snd_soc_card_get_drvdata(card);
-+ struct snd_soc_pcm_stream *cpu = &rtd->cpu_dai->driver->playback;
-+ struct snd_soc_pcm_stream *codec = &rtd->codec_dai->driver->playback;
-+ unsigned int sample_bits = 32;
-+ unsigned int val;
-+
-+ /* configure cpu dai */
-+ cpu->formats |= SNDRV_PCM_FMTBIT_DSD_U32_LE;
-+ cpu->rate_max = 768000;
-+
-+ /* configure dummy codec dai */
-+ codec->rate_min = 44100;
-+ codec->rates = SNDRV_PCM_RATE_KNOT;
-+ codec->formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_DSD_U32_LE;
-+
-+ /* configure max supported rate */
-+ regmap_read(regmap, NANO_STATUS, &val);
-+ if (val & NANO_STATUS_CLK) {
-+ dev_notice(card->dev, "Board with fast clocks installed\n");
-+ codec->rate_max = 768000;
-+ } else {
-+ dev_notice(card->dev, "Board with normal clocks installed\n");
-+ codec->rate_max = 384000;
-+ }
-+
-+ /* frame length enforced by hardware */
-+ return snd_soc_dai_set_bclk_ratio(rtd->cpu_dai, sample_bits * 2);
-+}
-+
-+static int nano_player_startup(struct snd_pcm_substream *substream)
-+{
-+ return snd_pcm_hw_constraint_list(substream->runtime, 0,
-+ SNDRV_PCM_HW_PARAM_RATE,
-+ &nano_player_constraint_rates);
-+}
-+
-+static int nano_player_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_card *card = rtd->card;
-+ struct regmap *regmap = snd_soc_card_get_drvdata(card);
-+ unsigned int config = NANO_CFG_ENA;
-+ struct snd_mask *fmt;
-+
-+ /* configure PCM or DSD */
-+ fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
-+ if (snd_mask_test(fmt, SNDRV_PCM_FORMAT_DSD_U32_LE)) {
-+ /* embed DSD in PCM data */
-+ snd_mask_none(fmt);
-+ snd_mask_set(fmt, SNDRV_PCM_FORMAT_S32_LE);
-+ /* enable DSD mode */
-+ config |= NANO_CFG_DSD;
-+ }
-+
-+ /* configure clocks */
-+ switch (params_rate(params)) {
-+ case 44100:
-+ config |= NANO_CFG_MULT1 | NANO_CFG_CLK22;
-+ break;
-+ case 88200:
-+ config |= NANO_CFG_MULT2 | NANO_CFG_CLK22;
-+ break;
-+ case 176400:
-+ config |= NANO_CFG_MULT4 | NANO_CFG_CLK22;
-+ break;
-+ case 352800:
-+ config |= NANO_CFG_MULT8 | NANO_CFG_CLK22;
-+ break;
-+ case 705600:
-+ config |= NANO_CFG_MULT16 | NANO_CFG_CLK22;
-+ break;
-+ case 48000:
-+ config |= NANO_CFG_MULT1 | NANO_CFG_CLK24;
-+ break;
-+ case 96000:
-+ config |= NANO_CFG_MULT2 | NANO_CFG_CLK24;
-+ break;
-+ case 192000:
-+ config |= NANO_CFG_MULT4 | NANO_CFG_CLK24;
-+ break;
-+ case 384000:
-+ config |= NANO_CFG_MULT8 | NANO_CFG_CLK24;
-+ break;
-+ case 768000:
-+ config |= NANO_CFG_MULT16 | NANO_CFG_CLK24;
-+ break;
-+ default:
-+ return -EINVAL;
-+ }
-+
-+ dev_dbg(card->dev, "Send CFG register 0x%02X\n", config);
-+ return regmap_write(regmap, NANO_CFG, config);
-+}
-+
-+static struct snd_soc_ops nano_player_ops = {
-+ .startup = nano_player_startup,
-+ .hw_params = nano_player_hw_params,
-+};
-+
-+static struct snd_soc_dai_link nano_player_link = {
-+ .name = "3Dlab Nano Player",
-+ .stream_name = "3Dlab Nano Player HiFi",
-+ .platform_name = "bcm2708-i2s.0",
-+ .cpu_dai_name = "bcm2708-i2s.0",
-+ .codec_name = "snd-soc-dummy",
-+ .codec_dai_name = "snd-soc-dummy-dai",
-+ .dai_fmt = SND_SOC_DAIFMT_I2S |
-+ SND_SOC_DAIFMT_CONT |
-+ SND_SOC_DAIFMT_NB_NF |
-+ SND_SOC_DAIFMT_CBM_CFM,
-+ .init = nano_player_init,
-+ .ops = &nano_player_ops,
-+};
-+
-+static const struct regmap_config nano_player_regmap = {
-+ .reg_bits = 8,
-+ .val_bits = 8,
-+ .max_register = 128,
-+ .cache_type = REGCACHE_RBTREE,
-+};
-+
-+static int nano_player_card_probe(struct snd_soc_card *card)
-+{
-+ struct regmap *regmap = snd_soc_card_get_drvdata(card);
-+ unsigned int val;
-+
-+ /* check hardware integrity */
-+ regmap_read(regmap, NANO_ID, &val);
-+ if (val != NANO_ID_VAL) {
-+ dev_err(card->dev, "Invalid ID register 0x%02X\n", val);
-+ return -ENODEV;
-+ }
-+
-+ /* report version to the user */
-+ regmap_read(regmap, NANO_VER, &val);
-+ dev_notice(card->dev, "Started 3Dlab Nano Player driver (v%d)\n", val);
-+
-+ /* enable internal audio bus and blink status LED */
-+ return regmap_write(regmap, NANO_CFG, NANO_CFG_ENA | NANO_CFG_BLINK);
-+}
-+
-+static int nano_player_card_remove(struct snd_soc_card *card)
-+{
-+ /* disable internal audio bus */
-+ struct regmap *regmap = snd_soc_card_get_drvdata(card);
-+
-+ return regmap_write(regmap, NANO_CFG, NANO_CFG_OFF);
-+}
-+
-+static struct snd_soc_card nano_player_card = {
-+ .name = "3Dlab_Nano_Player",
-+ .owner = THIS_MODULE,
-+ .dai_link = &nano_player_link,
-+ .num_links = 1,
-+ .controls = nano_player_controls,
-+ .num_controls = ARRAY_SIZE(nano_player_controls),
-+ .probe = nano_player_card_probe,
-+ .remove = nano_player_card_remove,
-+};
-+
-+static int nano_player_i2c_probe(struct i2c_client *i2c,
-+ const struct i2c_device_id *id)
-+{
-+ struct regmap *regmap;
-+ int ret;
-+
-+ regmap = devm_regmap_init_i2c(i2c, &nano_player_regmap);
-+ if (IS_ERR(regmap)) {
-+ ret = PTR_ERR(regmap);
-+ dev_err(&i2c->dev, "Failed to init regmap %d\n", ret);
-+ return ret;
-+ }
-+
-+ if (i2c->dev.of_node) {
-+ struct snd_soc_dai_link *dai = &nano_player_link;
-+ struct device_node *node;
-+
-+ /* cpu handle configured by device tree */
-+ node = of_parse_phandle(i2c->dev.of_node, "i2s-controller", 0);
-+ if (node) {
-+ dai->platform_name = NULL;
-+ dai->platform_of_node = node;
-+ dai->cpu_dai_name = NULL;
-+ dai->cpu_of_node = node;
-+ }
-+ }
-+
-+ nano_player_card.dev = &i2c->dev;
-+ snd_soc_card_set_drvdata(&nano_player_card, regmap);
-+ ret = devm_snd_soc_register_card(&i2c->dev, &nano_player_card);
-+
-+ if (ret && ret != -EPROBE_DEFER)
-+ dev_err(&i2c->dev, "Failed to register card %d\n", ret);
-+
-+ return ret;
-+}
-+
-+static const struct of_device_id nano_player_of_match[] = {
-+ { .compatible = "3dlab,nano-player", },
-+ { }
-+};
-+MODULE_DEVICE_TABLE(of, nano_player_of_match);
-+
-+static const struct i2c_device_id nano_player_i2c_id[] = {
-+ { "nano-player", 0 },
-+ { }
-+};
-+MODULE_DEVICE_TABLE(i2c, nano_player_i2c_id);
-+
-+static struct i2c_driver nano_player_i2c_driver = {
-+ .probe = nano_player_i2c_probe,
-+ .id_table = nano_player_i2c_id,
-+ .driver = {
-+ .name = "nano-player",
-+ .owner = THIS_MODULE,
-+ .of_match_table = nano_player_of_match,
-+ },
-+};
-+
-+module_i2c_driver(nano_player_i2c_driver);
-+
-+MODULE_DESCRIPTION("ASoC 3Dlab Nano Player driver");
-+MODULE_AUTHOR("GT <dev@3d-lab-av.com>");
-+MODULE_LICENSE("GPL v2");
-+
-+/* EOF */
---- a/sound/soc/bcm/Kconfig
-+++ b/sound/soc/bcm/Kconfig
-@@ -17,6 +17,12 @@ config SND_SOC_CYGNUS
-
- If you don't know what to do here, say N.
-
-+config SND_BCM2708_SOC_3DLAB_NANO_PLAYER
-+ tristate "Support for 3Dlab Nano Player"
-+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
-+ help
-+ Say Y or M if you want to add support for 3Dlab Nano Player.
-+
- config SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD
- tristate "Support for Google voiceHAT soundcard"
- depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
---- a/sound/soc/bcm/Makefile
-+++ b/sound/soc/bcm/Makefile
-@@ -12,6 +12,7 @@ obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc-
- snd-soc-googlevoicehat-codec-objs := googlevoicehat-codec.o
-
- # BCM2708 Machine Support
-+snd-soc-3dlab-nano-player-objs := 3dlab-nano-player.o
- snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
- snd-soc-justboom-dac-objs := justboom-dac.o
- snd-soc-rpi-cirrus-objs := rpi-cirrus.o
-@@ -31,6 +32,7 @@ snd-soc-fe-pi-audio-objs := fe-pi-audio.
- snd-soc-rpi-simple-soundcard-objs := rpi-simple-soundcard.o
- snd-soc-rpi-wm8804-soundcard-objs := rpi-wm8804-soundcard.o
-
-+obj-$(CONFIG_SND_BCM2708_SOC_3DLAB_NANO_PLAYER) += snd-soc-3dlab-nano-player.o
- obj-$(CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD) += snd-soc-googlevoicehat-codec.o
- obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
- obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o
projects / openwrt / staging / dedeckeh.git / blobdiff