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openwrt/target/linux/bcm27xx/patches-4.19/950-0072-New-driver-for-RRA-DigiDAC1-soundcard-using-WM8741-W.patch
Adrian Schmutzler 7d7aa2fd92 brcm2708: rename target to bcm27xx 
This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
2020-02-14 14:10:51 +01:00

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From 13efe81b4ab9321290d6973e90d00b7caf37b47f Mon Sep 17 00:00:00 2001
From: escalator2015 <jmtasende@gmail.com>
Date: Tue, 24 May 2016 16:20:09 +0100
Subject: [PATCH] New driver for RRA DigiDAC1 soundcard using WM8741 +
WM8804
---
sound/soc/bcm/digidac1-soundcard.c | 416 +++++++++++++++++++++++++++++
1 file changed, 416 insertions(+)
create mode 100644 sound/soc/bcm/digidac1-soundcard.c
--- /dev/null
+++ b/sound/soc/bcm/digidac1-soundcard.c
@@ -0,0 +1,416 @@
+/*
+ * ASoC Driver for RRA DigiDAC1
+ * Copyright 2016
+ * Author: José M. Tasende <vintage@redrocksaudio.es>
+ * based on the HifiBerry DAC driver by Florian Meier <florian.meier@koalo.de>
+ * and the Wolfson card driver by Nikesh Oswal, <Nikesh.Oswal@wolfsonmicro.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/platform_device.h>
+#include <linux/i2c.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+#include <sound/soc-dapm.h>
+#include <sound/tlv.h>
+#include <linux/regulator/consumer.h>
+
+#include "../codecs/wm8804.h"
+#include "../codecs/wm8741.h"
+
+#define WM8741_NUM_SUPPLIES 2
+
+/* codec private data */
+struct wm8741_priv {
+ struct wm8741_platform_data pdata;
+ struct regmap *regmap;
+ struct regulator_bulk_data supplies[WM8741_NUM_SUPPLIES];
+ unsigned int sysclk;
+ const struct snd_pcm_hw_constraint_list *sysclk_constraints;
+};
+
+static int samplerate = 44100;
+
+/* New Alsa Controls not exposed by original wm8741 codec driver */
+/* in actual driver the att. adjustment is wrong because */
+/* this DAC has a coarse attenuation register with 4dB steps */
+/* and a fine level register with 0.125dB steps */
+/* each register has 32 steps so combining both we have 1024 steps */
+/* of 0.125 dB. */
+/* The original level controls from driver are removed at startup */
+/* and replaced by the corrected ones. */
+/* The same wm8741 driver can be used for wm8741 and wm8742 devices */
+
+static const DECLARE_TLV_DB_SCALE(dac_tlv_fine, 0, 13, 0);
+static const DECLARE_TLV_DB_SCALE(dac_tlv_coarse, -12700, 400, 1);
+static const char *w8741_dither[4] = {"Off", "RPDF", "TPDF", "HPDF"};
+static const char *w8741_filter[5] = {
+ "Type 1", "Type 2", "Type 3", "Type 4", "Type 5"};
+static const char *w8741_switch[2] = {"Off", "On"};
+static const struct soc_enum w8741_enum[] = {
+SOC_ENUM_SINGLE(WM8741_MODE_CONTROL_2, 0, 4, w8741_dither),/* dithering type */
+SOC_ENUM_SINGLE(WM8741_FILTER_CONTROL, 0, 5, w8741_filter),/* filter type */
+SOC_ENUM_SINGLE(WM8741_FORMAT_CONTROL, 6, 2, w8741_switch),/* phase invert */
+SOC_ENUM_SINGLE(WM8741_VOLUME_CONTROL, 0, 2, w8741_switch),/* volume ramp */
+SOC_ENUM_SINGLE(WM8741_VOLUME_CONTROL, 3, 2, w8741_switch),/* soft mute */
+};
+
+static const struct snd_kcontrol_new w8741_snd_controls_stereo[] = {
+SOC_DOUBLE_R_TLV("DAC Fine Playback Volume", WM8741_DACLLSB_ATTENUATION,
+ WM8741_DACRLSB_ATTENUATION, 0, 31, 1, dac_tlv_fine),
+SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8741_DACLMSB_ATTENUATION,
+ WM8741_DACRMSB_ATTENUATION, 0, 31, 1, dac_tlv_coarse),
+SOC_ENUM("DAC Dither", w8741_enum[0]),
+SOC_ENUM("DAC Digital Filter", w8741_enum[1]),
+SOC_ENUM("DAC Phase Invert", w8741_enum[2]),
+SOC_ENUM("DAC Volume Ramp", w8741_enum[3]),
+SOC_ENUM("DAC Soft Mute", w8741_enum[4]),
+};
+
+static const struct snd_kcontrol_new w8741_snd_controls_mono_left[] = {
+SOC_SINGLE_TLV("DAC Fine Playback Volume", WM8741_DACLLSB_ATTENUATION,
+ 0, 31, 0, dac_tlv_fine),
+SOC_SINGLE_TLV("Digital Playback Volume", WM8741_DACLMSB_ATTENUATION,
+ 0, 31, 1, dac_tlv_coarse),
+SOC_ENUM("DAC Dither", w8741_enum[0]),
+SOC_ENUM("DAC Digital Filter", w8741_enum[1]),
+SOC_ENUM("DAC Phase Invert", w8741_enum[2]),
+SOC_ENUM("DAC Volume Ramp", w8741_enum[3]),
+SOC_ENUM("DAC Soft Mute", w8741_enum[4]),
+};
+
+static const struct snd_kcontrol_new w8741_snd_controls_mono_right[] = {
+SOC_SINGLE_TLV("DAC Fine Playback Volume", WM8741_DACRLSB_ATTENUATION,
+ 0, 31, 0, dac_tlv_fine),
+SOC_SINGLE_TLV("Digital Playback Volume", WM8741_DACRMSB_ATTENUATION,
+ 0, 31, 1, dac_tlv_coarse),
+SOC_ENUM("DAC Dither", w8741_enum[0]),
+SOC_ENUM("DAC Digital Filter", w8741_enum[1]),
+SOC_ENUM("DAC Phase Invert", w8741_enum[2]),
+SOC_ENUM("DAC Volume Ramp", w8741_enum[3]),
+SOC_ENUM("DAC Soft Mute", w8741_enum[4]),
+};
+
+static int w8741_add_controls(struct snd_soc_component *component)
+{
+ struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
+
+ switch (wm8741->pdata.diff_mode) {
+ case WM8741_DIFF_MODE_STEREO:
+ case WM8741_DIFF_MODE_STEREO_REVERSED:
+ snd_soc_add_component_controls(component,
+ w8741_snd_controls_stereo,
+ ARRAY_SIZE(w8741_snd_controls_stereo));
+ break;
+ case WM8741_DIFF_MODE_MONO_LEFT:
+ snd_soc_add_component_controls(component,
+ w8741_snd_controls_mono_left,
+ ARRAY_SIZE(w8741_snd_controls_mono_left));
+ break;
+ case WM8741_DIFF_MODE_MONO_RIGHT:
+ snd_soc_add_component_controls(component,
+ w8741_snd_controls_mono_right,
+ ARRAY_SIZE(w8741_snd_controls_mono_right));
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int digidac1_soundcard_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_component *component = rtd->codec_dai->component;
+ struct snd_soc_card *card = rtd->card;
+ struct snd_soc_pcm_runtime *wm8741_rtd;
+ struct snd_soc_component *wm8741_component;
+ struct snd_card *sound_card = card->snd_card;
+ struct snd_kcontrol *kctl;
+ int ret;
+
+ wm8741_rtd = snd_soc_get_pcm_runtime(card, card->dai_link[1].name);
+ if (!wm8741_rtd) {
+ dev_warn(card->dev, "digidac1_soundcard_init: couldn't get wm8741 rtd\n");
+ return -EFAULT;
+ }
+ wm8741_component = wm8741_rtd->codec_dai->component;
+ ret = w8741_add_controls(wm8741_component);
+ if (ret < 0)
+ dev_warn(card->dev, "Failed to add new wm8741 controls: %d\n",
+ ret);
+
+ /* enable TX output */
+ snd_soc_component_update_bits(component, WM8804_PWRDN, 0x4, 0x0);
+
+ kctl = snd_soc_card_get_kcontrol(card,
+ "Playback Volume");
+ if (kctl) {
+ kctl->vd[0].access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
+ snd_ctl_remove(sound_card, kctl);
+ }
+ kctl = snd_soc_card_get_kcontrol(card,
+ "Fine Playback Volume");
+ if (kctl) {
+ kctl->vd[0].access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
+ snd_ctl_remove(sound_card, kctl);
+ }
+ return 0;
+}
+
+static int digidac1_soundcard_startup(struct snd_pcm_substream *substream)
+{
+ /* turn on wm8804 digital output */
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_component *component = rtd->codec_dai->component;
+ struct snd_soc_card *card = rtd->card;
+ struct snd_soc_pcm_runtime *wm8741_rtd;
+ struct snd_soc_component *wm8741_component;
+
+ snd_soc_component_update_bits(component, WM8804_PWRDN, 0x3c, 0x00);
+ wm8741_rtd = snd_soc_get_pcm_runtime(card, card->dai_link[1].name);
+ if (!wm8741_rtd) {
+ dev_warn(card->dev, "digidac1_soundcard_startup: couldn't get WM8741 rtd\n");
+ return -EFAULT;
+ }
+ wm8741_component = wm8741_rtd->codec_dai->component;
+
+ /* latch wm8741 level */
+ snd_soc_component_update_bits(wm8741_component, WM8741_DACLLSB_ATTENUATION,
+ WM8741_UPDATELL, WM8741_UPDATELL);
+ snd_soc_component_update_bits(wm8741_component, WM8741_DACLMSB_ATTENUATION,
+ WM8741_UPDATELM, WM8741_UPDATELM);
+ snd_soc_component_update_bits(wm8741_component, WM8741_DACRLSB_ATTENUATION,
+ WM8741_UPDATERL, WM8741_UPDATERL);
+ snd_soc_component_update_bits(wm8741_component, WM8741_DACRMSB_ATTENUATION,
+ WM8741_UPDATERM, WM8741_UPDATERM);
+
+ return 0;
+}
+
+static void digidac1_soundcard_shutdown(struct snd_pcm_substream *substream)
+{
+ /* turn off wm8804 digital output */
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_component *component = rtd->codec_dai->component;
+
+ snd_soc_component_update_bits(component, WM8804_PWRDN, 0x3c, 0x3c);
+}
+
+static int digidac1_soundcard_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 *codec_dai = rtd->codec_dai;
+ struct snd_soc_component *component = rtd->codec_dai->component;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ struct snd_soc_card *card = rtd->card;
+ struct snd_soc_pcm_runtime *wm8741_rtd;
+ struct snd_soc_component *wm8741_component;
+
+ int sysclk = 27000000;
+ long mclk_freq = 0;
+ int mclk_div = 1;
+ int sampling_freq = 1;
+ int ret;
+
+ wm8741_rtd = snd_soc_get_pcm_runtime(card, card->dai_link[1].name);
+ if (!wm8741_rtd) {
+ dev_warn(card->dev, "digidac1_soundcard_hw_params: couldn't get WM8741 rtd\n");
+ return -EFAULT;
+ }
+ wm8741_component = wm8741_rtd->codec_dai->component;
+ samplerate = params_rate(params);
+
+ if (samplerate <= 96000) {
+ mclk_freq = samplerate*256;
+ mclk_div = WM8804_MCLKDIV_256FS;
+ } else {
+ mclk_freq = samplerate*128;
+ mclk_div = WM8804_MCLKDIV_128FS;
+ }
+
+ switch (samplerate) {
+ case 32000:
+ sampling_freq = 0x03;
+ break;
+ case 44100:
+ sampling_freq = 0x00;
+ break;
+ case 48000:
+ sampling_freq = 0x02;
+ break;
+ case 88200:
+ sampling_freq = 0x08;
+ break;
+ case 96000:
+ sampling_freq = 0x0a;
+ break;
+ case 176400:
+ sampling_freq = 0x0c;
+ break;
+ case 192000:
+ sampling_freq = 0x0e;
+ break;
+ default:
+ dev_err(card->dev,
+ "Failed to set WM8804 SYSCLK, unsupported samplerate %d\n",
+ samplerate);
+ }
+
+ snd_soc_dai_set_clkdiv(codec_dai, WM8804_MCLK_DIV, mclk_div);
+ snd_soc_dai_set_pll(codec_dai, 0, 0, sysclk, mclk_freq);
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL,
+ sysclk, SND_SOC_CLOCK_OUT);
+ if (ret < 0) {
+ dev_err(card->dev,
+ "Failed to set WM8804 SYSCLK: %d\n", ret);
+ return ret;
+ }
+ /* Enable wm8804 TX output */
+ snd_soc_component_update_bits(component, WM8804_PWRDN, 0x4, 0x0);
+
+ /* wm8804 Power on */
+ snd_soc_component_update_bits(component, WM8804_PWRDN, 0x9, 0);
+
+ /* wm8804 set sampling frequency status bits */
+ snd_soc_component_update_bits(component, WM8804_SPDTX4, 0x0f, sampling_freq);
+
+ /* Now update wm8741 registers for the correct oversampling */
+ if (samplerate <= 48000)
+ snd_soc_component_update_bits(wm8741_component, WM8741_MODE_CONTROL_1,
+ WM8741_OSR_MASK, 0x00);
+ else if (samplerate <= 96000)
+ snd_soc_component_update_bits(wm8741_component, WM8741_MODE_CONTROL_1,
+ WM8741_OSR_MASK, 0x20);
+ else
+ snd_soc_component_update_bits(wm8741_component, WM8741_MODE_CONTROL_1,
+ WM8741_OSR_MASK, 0x40);
+
+ /* wm8741 bit size */
+ switch (params_width(params)) {
+ case 16:
+ snd_soc_component_update_bits(wm8741_component, WM8741_FORMAT_CONTROL,
+ WM8741_IWL_MASK, 0x00);
+ break;
+ case 20:
+ snd_soc_component_update_bits(wm8741_component, WM8741_FORMAT_CONTROL,
+ WM8741_IWL_MASK, 0x01);
+ break;
+ case 24:
+ snd_soc_component_update_bits(wm8741_component, WM8741_FORMAT_CONTROL,
+ WM8741_IWL_MASK, 0x02);
+ break;
+ case 32:
+ snd_soc_component_update_bits(wm8741_component, WM8741_FORMAT_CONTROL,
+ WM8741_IWL_MASK, 0x03);
+ break;
+ default:
+ dev_dbg(card->dev, "wm8741_hw_params: Unsupported bit size param = %d",
+ params_width(params));
+ return -EINVAL;
+ }
+
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
+}
+/* machine stream operations */
+static struct snd_soc_ops digidac1_soundcard_ops = {
+ .hw_params = digidac1_soundcard_hw_params,
+ .startup = digidac1_soundcard_startup,
+ .shutdown = digidac1_soundcard_shutdown,
+};
+
+static struct snd_soc_dai_link digidac1_soundcard_dai[] = {
+ {
+ .name = "RRA DigiDAC1",
+ .stream_name = "RRA DigiDAC1 HiFi",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "wm8804-spdif",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "wm8804.1-003b",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM,
+ .ops = &digidac1_soundcard_ops,
+ .init = digidac1_soundcard_init,
+ },
+ {
+ .name = "RRA DigiDAC11",
+ .stream_name = "RRA DigiDAC11 HiFi",
+ .cpu_dai_name = "wm8804-spdif",
+ .codec_dai_name = "wm8741",
+ .codec_name = "wm8741.1-001a",
+ .dai_fmt = SND_SOC_DAIFMT_I2S
+ | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBS_CFS,
+ },
+};
+
+/* audio machine driver */
+static struct snd_soc_card digidac1_soundcard = {
+ .name = "digidac1-soundcard",
+ .owner = THIS_MODULE,
+ .dai_link = digidac1_soundcard_dai,
+ .num_links = ARRAY_SIZE(digidac1_soundcard_dai),
+};
+
+static int digidac1_soundcard_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ digidac1_soundcard.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai = &digidac1_soundcard_dai[0];
+
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+ }
+
+ ret = devm_snd_soc_register_card(&pdev->dev, &digidac1_soundcard);
+ if (ret && ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
+ ret);
+
+ return ret;
+}
+
+static const struct of_device_id digidac1_soundcard_of_match[] = {
+ { .compatible = "rra,digidac1-soundcard", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, digidac1_soundcard_of_match);
+
+static struct platform_driver digidac1_soundcard_driver = {
+ .driver = {
+ .name = "digidac1-audio",
+ .owner = THIS_MODULE,
+ .of_match_table = digidac1_soundcard_of_match,
+ },
+ .probe = digidac1_soundcard_probe,
+};
+
+module_platform_driver(digidac1_soundcard_driver);
+
+MODULE_AUTHOR("José M. Tasende <vintage@redrocksaudio.es>");
+MODULE_DESCRIPTION("ASoC Driver for RRA DigiDAC1");
+MODULE_LICENSE("GPL v2");
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