From e35b74b6335b49387b09d114966b89549a13f1d5 Mon Sep 17 00:00:00 2001 From: Daniel Matuschek Date: Mon, 4 Aug 2014 10:06:56 +0200 Subject: [PATCH 047/121] Added support for HiFiBerry DAC+ The driver is based on the HiFiBerry DAC driver. However HiFiBerry DAC+ uses a different codec chip (PCM5122), therefore a new driver is necessary. --- arch/arm/mach-bcm2708/bcm2708.c | 19 ++++++ sound/soc/bcm/Kconfig | 7 +++ sound/soc/bcm/Makefile | 2 + sound/soc/bcm/hifiberry_dacplus.c | 119 ++++++++++++++++++++++++++++++++++++++ 4 files changed, 147 insertions(+) create mode 100644 sound/soc/bcm/hifiberry_dacplus.c --- a/arch/arm/mach-bcm2708/bcm2708.c +++ b/arch/arm/mach-bcm2708/bcm2708.c @@ -652,6 +652,20 @@ static struct platform_device snd_pcm510 }; #endif +#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS_MODULE) +static struct platform_device snd_rpi_hifiberry_dacplus_device = { + .name = "snd-rpi-hifiberry-dacplus", + .id = 0, + .num_resources = 0, +}; + +static struct i2c_board_info __initdata snd_pcm512x_hbdacplus_i2c_devices[] = { + { + I2C_BOARD_INFO("pcm5122", 0x4d) + }, +}; +#endif + #if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI_MODULE) static struct platform_device snd_hifiberry_digi_device = { .name = "snd-hifiberry-digi", @@ -870,6 +884,11 @@ void __init bcm2708_init(void) bcm_register_device_dt(&snd_pcm5102a_codec_device); #endif +#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS_MODULE) + bcm_register_device_dt(&snd_rpi_hifiberry_dacplus_device); + i2c_register_board_info_dt(1, snd_pcm512x_hbdacplus_i2c_devices, ARRAY_SIZE(snd_pcm512x_hbdacplus_i2c_devices)); +#endif + #if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI_MODULE) bcm_register_device_dt(&snd_hifiberry_digi_device); i2c_register_board_info_dt(1, snd_wm8804_i2c_devices, ARRAY_SIZE(snd_wm8804_i2c_devices)); --- a/sound/soc/bcm/Kconfig +++ b/sound/soc/bcm/Kconfig @@ -26,6 +26,13 @@ config SND_BCM2708_SOC_HIFIBERRY_DAC help Say Y or M if you want to add support for HifiBerry DAC. +config SND_BCM2708_SOC_HIFIBERRY_DACPLUS + tristate "Support for HifiBerry 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 HifiBerry DAC+. + config SND_BCM2708_SOC_HIFIBERRY_DIGI tristate "Support for HifiBerry Digi" depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S --- a/sound/soc/bcm/Makefile +++ b/sound/soc/bcm/Makefile @@ -10,11 +10,13 @@ obj-$(CONFIG_SND_BCM2708_SOC_I2S) += snd # BCM2708 Machine Support snd-soc-hifiberry-dac-objs := hifiberry_dac.o +snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o snd-soc-hifiberry-digi-objs := hifiberry_digi.o snd-soc-rpi-dac-objs := rpi-dac.o snd-soc-iqaudio-dac-objs := iqaudio-dac.o obj-$(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-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o --- /dev/null +++ b/sound/soc/bcm/hifiberry_dacplus.c @@ -0,0 +1,119 @@ +/* + * ASoC Driver for HiFiBerry DAC+ + * + * Author: Daniel Matuschek + * Copyright 2014 + * 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 int snd_rpi_hifiberry_dacplus_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); + return 0; +} + +static int snd_rpi_hifiberry_dacplus_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); +} + +static int snd_rpi_hifiberry_dacplus_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_hifiberry_dacplus_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_hifiberry_dacplus_ops = { + .hw_params = snd_rpi_hifiberry_dacplus_hw_params, + .startup = snd_rpi_hifiberry_dacplus_startup, + .shutdown = snd_rpi_hifiberry_dacplus_shutdown, +}; + +static struct snd_soc_dai_link snd_rpi_hifiberry_dacplus_dai[] = { +{ + .name = "HiFiBerry DAC+", + .stream_name = "HiFiBerry 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_hifiberry_dacplus_ops, + .init = snd_rpi_hifiberry_dacplus_init, +}, +}; + +/* audio machine driver */ +static struct snd_soc_card snd_rpi_hifiberry_dacplus = { + .name = "snd_rpi_hifiberry_dacplus", + .dai_link = snd_rpi_hifiberry_dacplus_dai, + .num_links = ARRAY_SIZE(snd_rpi_hifiberry_dacplus_dai), +}; + +static int snd_rpi_hifiberry_dacplus_probe(struct platform_device *pdev) +{ + int ret = 0; + + snd_rpi_hifiberry_dacplus.dev = &pdev->dev; + ret = snd_soc_register_card(&snd_rpi_hifiberry_dacplus); + if (ret) + dev_err(&pdev->dev, + "snd_soc_register_card() failed: %d\n", ret); + + return ret; +} + +static int snd_rpi_hifiberry_dacplus_remove(struct platform_device *pdev) +{ + return snd_soc_unregister_card(&snd_rpi_hifiberry_dacplus); +} + +static struct platform_driver snd_rpi_hifiberry_dacplus_driver = { + .driver = { + .name = "snd-rpi-hifiberry-dacplus", + .owner = THIS_MODULE, + }, + .probe = snd_rpi_hifiberry_dacplus_probe, + .remove = snd_rpi_hifiberry_dacplus_remove, +}; + +module_platform_driver(snd_rpi_hifiberry_dacplus_driver); + +MODULE_AUTHOR("Daniel Matuschek "); +MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+"); +MODULE_LICENSE("GPL v2");