+++ /dev/null
-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");
projects / openwrt / staging / chunkeey.git / blobdiff