From 16e3f935b10cbd118056806ebd3afe6eed4c0183 Mon Sep 17 00:00:00 2001 From: Aaron Shaw Date: Thu, 7 Apr 2016 21:26:21 +0100 Subject: [PATCH] Add Support for JustBoom Audio boards justboom-dac: Adjust for ALSA API change As of 4.4, snd_soc_limit_volume now takes a struct snd_soc_card * rather than a struct snd_soc_codec *. Signed-off-by: Phil Elwell --- sound/soc/bcm/Kconfig | 14 +++ sound/soc/bcm/Makefile | 4 + sound/soc/bcm/justboom-dac.c | 162 +++++++++++++++++++++++++++++++ sound/soc/bcm/justboom-digi.c | 215 ++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 395 insertions(+) create mode 100644 sound/soc/bcm/justboom-dac.c create mode 100644 sound/soc/bcm/justboom-digi.c --- a/sound/soc/bcm/Kconfig +++ b/sound/soc/bcm/Kconfig @@ -52,6 +52,20 @@ config SND_BCM2708_SOC_RPI_PROTO help Say Y or M if you want to add support for Audio Codec Board PROTO (WM8731). +config SND_BCM2708_SOC_JUSTBOOM_DAC + tristate "Support for JustBoom DAC" + depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S + select SND_SOC_PCM512x + help + Say Y or M if you want to add support for JustBoom DAC. + +config SND_BCM2708_SOC_JUSTBOOM_DIGI + tristate "Support for JustBoom Digi" + depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S + select SND_SOC_WM8804 + help + Say Y or M if you want to add support for JustBoom Digi. + config SND_BCM2708_SOC_IQAUDIO_DAC tristate "Support for IQaudIO-DAC" depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S --- a/sound/soc/bcm/Makefile +++ b/sound/soc/bcm/Makefile @@ -12,6 +12,8 @@ obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc- snd-soc-hifiberry-dac-objs := hifiberry_dac.o snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o snd-soc-hifiberry-digi-objs := hifiberry_digi.o +snd-soc-justboom-dac-objs := justboom-dac.o +snd-soc-justboom-digi-objs := justboom-digi.o snd-soc-rpi-dac-objs := rpi-dac.o snd-soc-rpi-proto-objs := rpi-proto.o snd-soc-iqaudio-dac-objs := iqaudio-dac.o @@ -20,6 +22,8 @@ snd-soc-raspidac3-objs := raspidac3.o obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o +obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o +obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DIGI) += snd-soc-justboom-digi.o obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o --- /dev/null +++ b/sound/soc/bcm/justboom-dac.c @@ -0,0 +1,162 @@ +/* + * ASoC Driver for JustBoom DAC Raspberry Pi HAT Sound Card + * + * Author: Milan Neskovic + * Copyright 2016 + * 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 "../codecs/pcm512x.h" + +static bool digital_gain_0db_limit = true; + +static int snd_rpi_justboom_dac_init(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_codec *codec = rtd->codec; + snd_soc_update_bits(codec, PCM512x_GPIO_EN, 0x08, 0x08); + snd_soc_update_bits(codec, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02); + snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08); + + if (digital_gain_0db_limit) + { + int ret; + struct snd_soc_card *card = rtd->card; + + ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207); + if (ret < 0) + dev_warn(card->dev, "Failed to set volume limit: %d\n", ret); + } + + return 0; +} + +static int snd_rpi_justboom_dac_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; + /*return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);*/ + unsigned int sample_bits = + snd_pcm_format_physical_width(params_format(params)); + return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2); +} + +static int snd_rpi_justboom_dac_startup(struct snd_pcm_substream *substream) { + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08); + return 0; +} + +static void snd_rpi_justboom_dac_shutdown(struct snd_pcm_substream *substream) { + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x00); +} + +/* machine stream operations */ +static struct snd_soc_ops snd_rpi_justboom_dac_ops = { + .hw_params = snd_rpi_justboom_dac_hw_params, + .startup = snd_rpi_justboom_dac_startup, + .shutdown = snd_rpi_justboom_dac_shutdown, +}; + +static struct snd_soc_dai_link snd_rpi_justboom_dac_dai[] = { +{ + .name = "JustBoom DAC", + .stream_name = "JustBoom DAC HiFi", + .cpu_dai_name = "bcm2708-i2s.0", + .codec_dai_name = "pcm512x-hifi", + .platform_name = "bcm2708-i2s.0", + .codec_name = "pcm512x.1-004d", + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, + .ops = &snd_rpi_justboom_dac_ops, + .init = snd_rpi_justboom_dac_init, +}, +}; + +/* audio machine driver */ +static struct snd_soc_card snd_rpi_justboom_dac = { + .name = "snd_rpi_justboom_dac", + .owner = THIS_MODULE, + .dai_link = snd_rpi_justboom_dac_dai, + .num_links = ARRAY_SIZE(snd_rpi_justboom_dac_dai), +}; + +static int snd_rpi_justboom_dac_probe(struct platform_device *pdev) +{ + int ret = 0; + + snd_rpi_justboom_dac.dev = &pdev->dev; + + if (pdev->dev.of_node) { + struct device_node *i2s_node; + struct snd_soc_dai_link *dai = &snd_rpi_justboom_dac_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; + } + + digital_gain_0db_limit = !of_property_read_bool( + pdev->dev.of_node, "justboom,24db_digital_gain"); + } + + ret = snd_soc_register_card(&snd_rpi_justboom_dac); + if (ret) + dev_err(&pdev->dev, + "snd_soc_register_card() failed: %d\n", ret); + + return ret; +} + +static int snd_rpi_justboom_dac_remove(struct platform_device *pdev) +{ + return snd_soc_unregister_card(&snd_rpi_justboom_dac); +} + +static const struct of_device_id snd_rpi_justboom_dac_of_match[] = { + { .compatible = "justboom,justboom-dac", }, + {}, +}; +MODULE_DEVICE_TABLE(of, snd_rpi_justboom_dac_of_match); + +static struct platform_driver snd_rpi_justboom_dac_driver = { + .driver = { + .name = "snd-rpi-justboom-dac", + .owner = THIS_MODULE, + .of_match_table = snd_rpi_justboom_dac_of_match, + }, + .probe = snd_rpi_justboom_dac_probe, + .remove = snd_rpi_justboom_dac_remove, +}; + +module_platform_driver(snd_rpi_justboom_dac_driver); + +MODULE_AUTHOR("Milan Neskovic "); +MODULE_DESCRIPTION("ASoC Driver for JustBoom PI DAC HAT Sound Card"); +MODULE_LICENSE("GPL v2"); --- /dev/null +++ b/sound/soc/bcm/justboom-digi.c @@ -0,0 +1,215 @@ +/* + * ASoC Driver for JustBoom Raspberry Pi Digi HAT Sound Card + * + * Author: Milan Neskovic + * Copyright 2016 + * 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 "../codecs/wm8804.h" + +static int snd_rpi_justboom_digi_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_rpi_justboom_digi_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_rpi_justboom_digi_shutdown(struct snd_pcm_substream *substream) { + /* 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_rpi_justboom_digi_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; + + int 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(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_rpi_justboom_digi_ops = { + .hw_params = snd_rpi_justboom_digi_hw_params, + .startup = snd_rpi_justboom_digi_startup, + .shutdown = snd_rpi_justboom_digi_shutdown, +}; + +static struct snd_soc_dai_link snd_rpi_justboom_digi_dai[] = { +{ + .name = "JustBoom Digi", + .stream_name = "JustBoom Digi 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_rpi_justboom_digi_ops, + .init = snd_rpi_justboom_digi_init, +}, +}; + +/* audio machine driver */ +static struct snd_soc_card snd_rpi_justboom_digi = { + .name = "snd_rpi_justboom_digi", + .owner = THIS_MODULE, + .dai_link = snd_rpi_justboom_digi_dai, + .num_links = ARRAY_SIZE(snd_rpi_justboom_digi_dai), +}; + +static int snd_rpi_justboom_digi_probe(struct platform_device *pdev) +{ + int ret = 0; + + snd_rpi_justboom_digi.dev = &pdev->dev; + + if (pdev->dev.of_node) { + struct device_node *i2s_node; + struct snd_soc_dai_link *dai = &snd_rpi_justboom_digi_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 = snd_soc_register_card(&snd_rpi_justboom_digi); + if (ret) + dev_err(&pdev->dev, + "snd_soc_register_card() failed: %d\n", ret); + + return ret; +} + +static int snd_rpi_justboom_digi_remove(struct platform_device *pdev) +{ + return snd_soc_unregister_card(&snd_rpi_justboom_digi); +} + +static const struct of_device_id snd_rpi_justboom_digi_of_match[] = { + { .compatible = "justboom,justboom-digi", }, + {}, +}; +MODULE_DEVICE_TABLE(of, snd_rpi_justboom_digi_of_match); + +static struct platform_driver snd_rpi_justboom_digi_driver = { + .driver = { + .name = "snd-rpi-justboom-digi", + .owner = THIS_MODULE, + .of_match_table = snd_rpi_justboom_digi_of_match, + }, + .probe = snd_rpi_justboom_digi_probe, + .remove = snd_rpi_justboom_digi_remove, +}; + +module_platform_driver(snd_rpi_justboom_digi_driver); + +MODULE_AUTHOR("Milan Neskovic "); +MODULE_DESCRIPTION("ASoC Driver for JustBoom PI Digi HAT Sound Card"); +MODULE_LICENSE("GPL v2");