From 525cdff530e74a8428a60859f9308bca825463fd Mon Sep 17 00:00:00 2001 From: sandeepal Date: Fri, 2 Jun 2017 18:59:46 +0530 Subject: [PATCH 088/454] Allo Digione Driver (#2048) Driver for the Allo Digione soundcard allo-digione: 192kHz clicking sound fix See: https://github.com/raspberrypi/linux/pull/2149 --- sound/soc/bcm/Kconfig | 7 + sound/soc/bcm/Makefile | 2 + sound/soc/bcm/allo-digione.c | 265 +++++++++++++++++++++++++++++++++++ 3 files changed, 274 insertions(+) create mode 100644 sound/soc/bcm/allo-digione.c --- a/sound/soc/bcm/Kconfig +++ b/sound/soc/bcm/Kconfig @@ -176,6 +176,13 @@ config SND_BCM2708_SOC_ALLO_BOSS_DAC help Say Y or M if you want to add support for Allo Boss DAC. +config SND_BCM2708_SOC_ALLO_DIGIONE + tristate "Support for Allo DigiOne" + depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S + select SND_SOC_PCM512x_I2C + help + Say Y or M if you want to add support for Allo DigiOne. + config SND_BCM2708_SOC_FE_PI_AUDIO tristate "Support for Fe-Pi-Audio" depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S --- a/sound/soc/bcm/Makefile +++ b/sound/soc/bcm/Makefile @@ -34,6 +34,7 @@ snd-soc-dionaudio-loco-v2-objs := dionau snd-soc-allo-boss-dac-objs := allo-boss-dac.o snd-soc-allo-piano-dac-objs := allo-piano-dac.o snd-soc-allo-piano-dac-plus-objs := allo-piano-dac-plus.o +snd-soc-allo-digione-objs := allo-digione.o snd-soc-pisound-objs := pisound.o snd-soc-fe-pi-audio-objs := fe-pi-audio.o @@ -60,5 +61,6 @@ obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_L obj-$(CONFIG_SND_BCM2708_SOC_ALLO_BOSS_DAC) += snd-soc-allo-boss-dac.o obj-$(CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC) += snd-soc-allo-piano-dac.o obj-$(CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC_PLUS) += snd-soc-allo-piano-dac-plus.o +obj-$(CONFIG_SND_BCM2708_SOC_ALLO_DIGIONE) += snd-soc-allo-digione.o obj-$(CONFIG_SND_PISOUND) += snd-soc-pisound.o obj-$(CONFIG_SND_BCM2708_SOC_FE_PI_AUDIO) += snd-soc-fe-pi-audio.o --- /dev/null +++ b/sound/soc/bcm/allo-digione.c @@ -0,0 +1,265 @@ +/* + * ASoC Driver for Allo DigiOne + * + * Author: Baswaraj + * Copyright 2017 + * based on code by Daniel Matuschek + * based on code by Florian Meier + * + * 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 +#include + +#include +#include +#include +#include +#include +#include + +#include "../codecs/wm8804.h" + +static short int auto_shutdown_output; +module_param(auto_shutdown_output, short, + S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP); +MODULE_PARM_DESC(auto_shutdown_output, "Shutdown SP/DIF output if playback is stopped"); + +#define CLK_44EN_RATE 22579200UL +#define CLK_48EN_RATE 24576000UL + +static struct gpio_desc *snd_allo_clk44gpio; +static struct gpio_desc *snd_allo_clk48gpio; + +static int samplerate = 44100; + +static uint32_t snd_allo_digione_enable_clock(int sample_rate) +{ + switch (sample_rate) { + case 11025: + case 22050: + case 44100: + case 88200: + case 176400: + gpiod_set_value_cansleep(snd_allo_clk44gpio, 1); + gpiod_set_value_cansleep(snd_allo_clk48gpio, 0); + return CLK_44EN_RATE; + default: + gpiod_set_value_cansleep(snd_allo_clk48gpio, 1); + gpiod_set_value_cansleep(snd_allo_clk44gpio, 0); + return CLK_48EN_RATE; + } +} + + +static int snd_allo_digione_init(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_codec *codec = rtd->codec; + + /* enable TX output */ + snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0); + + return 0; +} + +static int snd_allo_digione_startup(struct snd_pcm_substream *substream) +{ + /* turn on digital output */ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + + snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x00); + return 0; +} + +static void snd_allo_digione_shutdown(struct snd_pcm_substream *substream) +{ + /* turn off output */ + if (auto_shutdown_output) { + /* turn off output */ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + + snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x3c); + } +} + +static int snd_allo_digione_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_codec *codec = rtd->codec; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + + int sysclk = 27000000; /* This is fixed on this board */ + + long mclk_freq = 0; + int mclk_div = 1; + int sampling_freq = 1; + + int ret; + + samplerate = params_rate(params); + mclk_freq = samplerate * 256; + mclk_div = WM8804_MCLKDIV_256FS; + + sysclk = snd_allo_digione_enable_clock(samplerate); + + 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(codec->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(codec->dev, + "Failed to set WM8804 SYSCLK: %d\n", ret); + return ret; + } + + /* Enable TX output */ + snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0); + + /* Power on */ + snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0); + + /* set sampling frequency status bits */ + snd_soc_update_bits(codec, WM8804_SPDTX4, 0x0f, sampling_freq); + + return snd_soc_dai_set_bclk_ratio(cpu_dai, 64); +} + +/* machine stream operations */ +static struct snd_soc_ops snd_allo_digione_ops = { + .hw_params = snd_allo_digione_hw_params, + .startup = snd_allo_digione_startup, + .shutdown = snd_allo_digione_shutdown, +}; + +static struct snd_soc_dai_link snd_allo_digione_dai[] = { +{ + .name = "Allo DigiOne", + .stream_name = "Allo DigiOne 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 = &snd_allo_digione_ops, + .init = snd_allo_digione_init, +}, +}; + +/* audio machine driver */ +static struct snd_soc_card snd_allo_digione = { + .name = "snd_allo_digione", + .driver_name = "AlloDigiOne", + .owner = THIS_MODULE, + .dai_link = snd_allo_digione_dai, + .num_links = ARRAY_SIZE(snd_allo_digione_dai), +}; + +static int snd_allo_digione_probe(struct platform_device *pdev) +{ + int ret = 0; + + snd_allo_digione.dev = &pdev->dev; + + if (pdev->dev.of_node) { + struct device_node *i2s_node; + struct snd_soc_dai_link *dai = &snd_allo_digione_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; + } + + snd_allo_clk44gpio = + devm_gpiod_get(&pdev->dev, "clock44", GPIOD_OUT_LOW); + if (IS_ERR(snd_allo_clk44gpio)) + dev_err(&pdev->dev, "devm_gpiod_get() failed\n"); + + snd_allo_clk48gpio = + devm_gpiod_get(&pdev->dev, "clock48", GPIOD_OUT_LOW); + if (IS_ERR(snd_allo_clk48gpio)) + dev_err(&pdev->dev, "devm_gpiod_get() failed\n"); + } + + ret = snd_soc_register_card(&snd_allo_digione); + if (ret && ret != -EPROBE_DEFER) + dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", + ret); + + return ret; +} + +static int snd_allo_digione_remove(struct platform_device *pdev) +{ + return snd_soc_unregister_card(&snd_allo_digione); +} + +static const struct of_device_id snd_allo_digione_of_match[] = { + { .compatible = "allo,allo-digione", }, + {}, +}; +MODULE_DEVICE_TABLE(of, snd_allo_digione_of_match); + +static struct platform_driver snd_allo_digione_driver = { + .driver = { + .name = "snd-allo-digione", + .owner = THIS_MODULE, + .of_match_table = snd_allo_digione_of_match, + }, + .probe = snd_allo_digione_probe, + .remove = snd_allo_digione_remove, +}; + +module_platform_driver(snd_allo_digione_driver); + +MODULE_AUTHOR("Baswaraj "); +MODULE_DESCRIPTION("ASoC Driver for Allo DigiOne"); +MODULE_LICENSE("GPL v2");