diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0135-Added-driver-for-the-HiFiBerry-DAC-ADC-2694.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0135-Added-driver-for-the-HiFiBerry-DAC-ADC-2694.patch | 464 |
1 files changed, 464 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0135-Added-driver-for-the-HiFiBerry-DAC-ADC-2694.patch b/target/linux/bcm27xx/patches-5.4/950-0135-Added-driver-for-the-HiFiBerry-DAC-ADC-2694.patch new file mode 100644 index 0000000000..cc379f55e1 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0135-Added-driver-for-the-HiFiBerry-DAC-ADC-2694.patch @@ -0,0 +1,464 @@ +From b6eb457e794f8c48b7004cc88aa82889bcd5f8e6 Mon Sep 17 00:00:00 2001 +From: HiFiBerry <info@hifiberry.com> +Date: Mon, 8 Oct 2018 18:10:12 +0200 +Subject: [PATCH] Added driver for the HiFiBerry DAC+ ADC (#2694) + +Signed-off-by: Daniel Matuschek <daniel@hifiberry.com> + +hifiberry_dacplusadc: switch to snd_soc_dai_set_bclk_ratio + +Signed-off-by: Matthias Reichl <hias@horus.com> + +ASoC: hifiberry_dacplusadc: fix DAI link setup + +The driver only defines a single DAI link and the code that tries +to setup the second (non-existent) DAI link looks wrong - using dmic +as a CPU/platform driver doesn't make any sense. + +The DT overlay doesn't define a dmic property, so the code was never +executed (otherwise it would have resulted in a memory corruption). + +So drop the offending code to prevent issues if a dmic property +should be added to the DT overlay. + +Signed-off-by: Matthias Reichl <hias@horus.com> + +ASoC: hifiberry_dacplusadc: use modern dai_link style + +Signed-off-by: Matthias Reichl <hias@horus.com> +--- + sound/soc/bcm/Kconfig | 9 + + sound/soc/bcm/Makefile | 2 + + sound/soc/bcm/hifiberry_dacplusadc.c | 390 +++++++++++++++++++++++++++ + 3 files changed, 401 insertions(+) + create mode 100644 sound/soc/bcm/hifiberry_dacplusadc.c + +--- a/sound/soc/bcm/Kconfig ++++ b/sound/soc/bcm/Kconfig +@@ -41,6 +41,15 @@ config SND_BCM2708_SOC_HIFIBERRY_DACPLUS + help + Say Y or M if you want to add support for HifiBerry DAC+. + ++config SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC ++ tristate "Support for HifiBerry DAC+ADC" ++ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S ++ select SND_SOC_PCM512x_I2C ++ select SND_SOC_DMIC ++ select COMMON_CLK_HIFIBERRY_DACPRO ++ help ++ Say Y or M if you want to add support for HifiBerry DAC+ADC. ++ + 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 +@@ -14,6 +14,7 @@ snd-soc-googlevoicehat-codec-objs := goo + + # BCM2708 Machine Support + snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o ++snd-soc-hifiberry-dacplusadc-objs := hifiberry_dacplusadc.o + snd-soc-justboom-dac-objs := justboom-dac.o + snd-soc-rpi-cirrus-objs := rpi-cirrus.o + snd-soc-rpi-proto-objs := rpi-proto.o +@@ -35,6 +36,7 @@ snd-soc-rpi-wm8804-soundcard-objs := rpi + + obj-$(CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD) += snd-soc-googlevoicehat-codec.o + obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o ++obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC) += snd-soc-hifiberry-dacplusadc.o + obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o + obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o + obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o +--- /dev/null ++++ b/sound/soc/bcm/hifiberry_dacplusadc.c +@@ -0,0 +1,390 @@ ++/* ++ * ASoC Driver for HiFiBerry DAC+ / DAC Pro with ADC ++ * ++ * Author: Daniel Matuschek, Stuart MacLean <stuart@hifiberry.com> ++ * Copyright 2014-2015 ++ * based on code by Florian Meier <florian.meier@koalo.de> ++ * ADC added by Joerg Schambacher <joscha@schambacher.com> ++ * Copyright 2018 ++ * ++ * 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/kernel.h> ++#include <linux/clk.h> ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/of.h> ++#include <linux/slab.h> ++#include <linux/delay.h> ++ ++#include <sound/core.h> ++#include <sound/pcm.h> ++#include <sound/pcm_params.h> ++#include <sound/soc.h> ++#include <sound/jack.h> ++ ++#include "../codecs/pcm512x.h" ++ ++#define HIFIBERRY_DACPRO_NOCLOCK 0 ++#define HIFIBERRY_DACPRO_CLK44EN 1 ++#define HIFIBERRY_DACPRO_CLK48EN 2 ++ ++struct platform_device *dmic_codec_dev; ++ ++struct pcm512x_priv { ++ struct regmap *regmap; ++ struct clk *sclk; ++}; ++ ++/* Clock rate of CLK44EN attached to GPIO6 pin */ ++#define CLK_44EN_RATE 22579200UL ++/* Clock rate of CLK48EN attached to GPIO3 pin */ ++#define CLK_48EN_RATE 24576000UL ++ ++static bool slave; ++static bool snd_rpi_hifiberry_is_dacpro; ++static bool digital_gain_0db_limit = true; ++ ++static void snd_rpi_hifiberry_dacplusadc_select_clk(struct snd_soc_component *component, ++ int clk_id) ++{ ++ switch (clk_id) { ++ case HIFIBERRY_DACPRO_NOCLOCK: ++ snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x24, 0x00); ++ break; ++ case HIFIBERRY_DACPRO_CLK44EN: ++ snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x24, 0x20); ++ break; ++ case HIFIBERRY_DACPRO_CLK48EN: ++ snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x24, 0x04); ++ break; ++ } ++} ++ ++static void snd_rpi_hifiberry_dacplusadc_clk_gpio(struct snd_soc_component *component) ++{ ++ snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x24, 0x24); ++ snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_3, 0x0f, 0x02); ++ snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_6, 0x0f, 0x02); ++} ++ ++static bool snd_rpi_hifiberry_dacplusadc_is_sclk(struct snd_soc_component *component) ++{ ++ unsigned int sck; ++ ++ snd_soc_component_read(component, PCM512x_RATE_DET_4, &sck); ++ return (!(sck & 0x40)); ++} ++ ++static bool snd_rpi_hifiberry_dacplusadc_is_sclk_sleep( ++ struct snd_soc_component *component) ++{ ++ msleep(2); ++ return snd_rpi_hifiberry_dacplusadc_is_sclk(component); ++} ++ ++static bool snd_rpi_hifiberry_dacplusadc_is_pro_card(struct snd_soc_component *component) ++{ ++ bool isClk44EN, isClk48En, isNoClk; ++ ++ snd_rpi_hifiberry_dacplusadc_clk_gpio(component); ++ ++ snd_rpi_hifiberry_dacplusadc_select_clk(component, HIFIBERRY_DACPRO_CLK44EN); ++ isClk44EN = snd_rpi_hifiberry_dacplusadc_is_sclk_sleep(component); ++ ++ snd_rpi_hifiberry_dacplusadc_select_clk(component, HIFIBERRY_DACPRO_NOCLOCK); ++ isNoClk = snd_rpi_hifiberry_dacplusadc_is_sclk_sleep(component); ++ ++ snd_rpi_hifiberry_dacplusadc_select_clk(component, HIFIBERRY_DACPRO_CLK48EN); ++ isClk48En = snd_rpi_hifiberry_dacplusadc_is_sclk_sleep(component); ++ ++ return (isClk44EN && isClk48En && !isNoClk); ++} ++ ++static int snd_rpi_hifiberry_dacplusadc_clk_for_rate(int sample_rate) ++{ ++ int type; ++ ++ switch (sample_rate) { ++ case 11025: ++ case 22050: ++ case 44100: ++ case 88200: ++ case 176400: ++ case 352800: ++ type = HIFIBERRY_DACPRO_CLK44EN; ++ break; ++ default: ++ type = HIFIBERRY_DACPRO_CLK48EN; ++ break; ++ } ++ return type; ++} ++ ++static void snd_rpi_hifiberry_dacplusadc_set_sclk(struct snd_soc_component *component, ++ int sample_rate) ++{ ++ struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component); ++ ++ if (!IS_ERR(pcm512x->sclk)) { ++ int ctype; ++ ++ ctype = snd_rpi_hifiberry_dacplusadc_clk_for_rate(sample_rate); ++ clk_set_rate(pcm512x->sclk, (ctype == HIFIBERRY_DACPRO_CLK44EN) ++ ? CLK_44EN_RATE : CLK_48EN_RATE); ++ snd_rpi_hifiberry_dacplusadc_select_clk(component, ctype); ++ } ++} ++ ++static int snd_rpi_hifiberry_dacplusadc_init(struct snd_soc_pcm_runtime *rtd) ++{ ++ struct snd_soc_component *component = rtd->codec_dai->component; ++ struct pcm512x_priv *priv; ++ ++ if (slave) ++ snd_rpi_hifiberry_is_dacpro = false; ++ else ++ snd_rpi_hifiberry_is_dacpro = ++ snd_rpi_hifiberry_dacplusadc_is_pro_card(component); ++ ++ if (snd_rpi_hifiberry_is_dacpro) { ++ struct snd_soc_dai_link *dai = rtd->dai_link; ++ ++ dai->name = "HiFiBerry ADCDAC+ Pro"; ++ dai->stream_name = "HiFiBerry ADCDAC+ Pro HiFi"; ++ dai->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF ++ | SND_SOC_DAIFMT_CBM_CFM; ++ ++ snd_soc_component_update_bits(component, PCM512x_BCLK_LRCLK_CFG, 0x31, 0x11); ++ snd_soc_component_update_bits(component, PCM512x_MASTER_MODE, 0x03, 0x03); ++ snd_soc_component_update_bits(component, PCM512x_MASTER_CLKDIV_2, 0x7f, 63); ++ } else { ++ priv = snd_soc_component_get_drvdata(component); ++ priv->sclk = ERR_PTR(-ENOENT); ++ } ++ ++ snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x08, 0x08); ++ snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_4, 0x0f, 0x02); ++ snd_soc_component_update_bits(component, 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_hifiberry_dacplusadc_update_rate_den( ++ struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) ++{ ++ struct snd_soc_pcm_runtime *rtd = substream->private_data; ++ struct snd_soc_component *component = rtd->codec_dai->component; ++ struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component); ++ struct snd_ratnum *rats_no_pll; ++ unsigned int num = 0, den = 0; ++ int err; ++ ++ rats_no_pll = devm_kzalloc(rtd->dev, sizeof(*rats_no_pll), GFP_KERNEL); ++ if (!rats_no_pll) ++ return -ENOMEM; ++ ++ rats_no_pll->num = clk_get_rate(pcm512x->sclk) / 64; ++ rats_no_pll->den_min = 1; ++ rats_no_pll->den_max = 128; ++ rats_no_pll->den_step = 1; ++ ++ err = snd_interval_ratnum(hw_param_interval(params, ++ SNDRV_PCM_HW_PARAM_RATE), 1, rats_no_pll, &num, &den); ++ if (err >= 0 && den) { ++ params->rate_num = num; ++ params->rate_den = den; ++ } ++ ++ devm_kfree(rtd->dev, rats_no_pll); ++ return 0; ++} ++ ++static int snd_rpi_hifiberry_dacplusadc_hw_params( ++ struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) ++{ ++ int ret = 0; ++ struct snd_soc_pcm_runtime *rtd = substream->private_data; ++ int channels = params_channels(params); ++ int width = 32; ++ ++ if (snd_rpi_hifiberry_is_dacpro) { ++ struct snd_soc_component *component = rtd->codec_dai->component; ++ ++ width = snd_pcm_format_physical_width(params_format(params)); ++ ++ snd_rpi_hifiberry_dacplusadc_set_sclk(component, ++ params_rate(params)); ++ ++ ret = snd_rpi_hifiberry_dacplusadc_update_rate_den( ++ substream, params); ++ } ++ ++ ret = snd_soc_dai_set_bclk_ratio(rtd->cpu_dai, channels * width); ++ if (ret) ++ return ret; ++ ret = snd_soc_dai_set_bclk_ratio(rtd->codec_dai, channels * width); ++ return ret; ++} ++ ++static int hifiberry_dacplusadc_LED_cnt; ++ ++static int snd_rpi_hifiberry_dacplusadc_startup( ++ struct snd_pcm_substream *substream) ++{ ++ struct snd_soc_pcm_runtime *rtd = substream->private_data; ++ struct snd_soc_component *component = rtd->codec_dai->component; ++ ++ snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, ++ 0x08, 0x08); ++ hifiberry_dacplusadc_LED_cnt++; ++ return 0; ++} ++ ++static void snd_rpi_hifiberry_dacplusadc_shutdown( ++ struct snd_pcm_substream *substream) ++{ ++ struct snd_soc_pcm_runtime *rtd = substream->private_data; ++ struct snd_soc_component *component = rtd->codec_dai->component; ++ ++ hifiberry_dacplusadc_LED_cnt--; ++ if (!hifiberry_dacplusadc_LED_cnt) ++ snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, ++ 0x08, 0x00); ++} ++ ++/* machine stream operations */ ++static struct snd_soc_ops snd_rpi_hifiberry_dacplusadc_ops = { ++ .hw_params = snd_rpi_hifiberry_dacplusadc_hw_params, ++ .startup = snd_rpi_hifiberry_dacplusadc_startup, ++ .shutdown = snd_rpi_hifiberry_dacplusadc_shutdown, ++}; ++ ++SND_SOC_DAILINK_DEFS(hifi, ++ DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")), ++ DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004d", "pcm512x-hifi"), ++ COMP_CODEC("dmic-codec", "dmic-hifi")), ++ DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0"))); ++ ++static struct snd_soc_dai_link snd_rpi_hifiberry_dacplusadc_dai[] = { ++{ ++ .name = "HiFiBerry DAC+ADC", ++ .stream_name = "HiFiBerry DAC+ADC HiFi", ++ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | ++ SND_SOC_DAIFMT_CBS_CFS, ++ .ops = &snd_rpi_hifiberry_dacplusadc_ops, ++ .init = snd_rpi_hifiberry_dacplusadc_init, ++ SND_SOC_DAILINK_REG(hifi), ++}, ++}; ++ ++/* audio machine driver */ ++static struct snd_soc_card snd_rpi_hifiberry_dacplusadc = { ++ .name = "snd_rpi_hifiberry_dacplusadc", ++ .driver_name = "HifiberryDacpAdc", ++ .owner = THIS_MODULE, ++ .dai_link = snd_rpi_hifiberry_dacplusadc_dai, ++ .num_links = ARRAY_SIZE(snd_rpi_hifiberry_dacplusadc_dai), ++}; ++ ++ ++static int snd_rpi_hifiberry_dacplusadc_probe(struct platform_device *pdev) ++{ ++ int ret = 0; ++ ++ snd_rpi_hifiberry_dacplusadc.dev = &pdev->dev; ++ if (pdev->dev.of_node) { ++ struct device_node *i2s_node; ++ struct snd_soc_dai_link *dai; ++ ++ dai = &snd_rpi_hifiberry_dacplusadc_dai[0]; ++ i2s_node = of_parse_phandle(pdev->dev.of_node, ++ "i2s-controller", 0); ++ if (i2s_node) { ++ dai->cpus->of_node = i2s_node; ++ dai->platforms->of_node = i2s_node; ++ dai->cpus->dai_name = NULL; ++ dai->platforms->name = NULL; ++ } ++ } ++ digital_gain_0db_limit = !of_property_read_bool( ++ pdev->dev.of_node, "hifiberry,24db_digital_gain"); ++ slave = of_property_read_bool(pdev->dev.of_node, ++ "hifiberry-dacplusadc,slave"); ++ ++ ret = devm_snd_soc_register_card(&pdev->dev, ++ &snd_rpi_hifiberry_dacplusadc); ++ 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 snd_rpi_hifiberry_dacplusadc_of_match[] = { ++ { .compatible = "hifiberry,hifiberry-dacplusadc", }, ++ {}, ++}; ++ ++MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dacplusadc_of_match); ++ ++static struct platform_driver snd_rpi_hifiberry_dacplusadc_driver = { ++ .driver = { ++ .name = "snd-rpi-hifiberry-dacplusadc", ++ .owner = THIS_MODULE, ++ .of_match_table = snd_rpi_hifiberry_dacplusadc_of_match, ++ }, ++ .probe = snd_rpi_hifiberry_dacplusadc_probe, ++}; ++ ++static int __init hifiberry_dacplusadc_init(void) ++{ ++ int ret; ++ ++ dmic_codec_dev = platform_device_register_simple("dmic-codec", -1, NULL, ++ 0); ++ if (IS_ERR(dmic_codec_dev)) { ++ pr_err("%s: dmic-codec device registration failed\n", __func__); ++ return PTR_ERR(dmic_codec_dev); ++ } ++ ++ ret = platform_driver_register(&snd_rpi_hifiberry_dacplusadc_driver); ++ if (ret) { ++ pr_err("%s: platform driver registration failed\n", __func__); ++ platform_device_unregister(dmic_codec_dev); ++ } ++ ++ return ret; ++} ++module_init(hifiberry_dacplusadc_init); ++ ++static void __exit hifiberry_dacplusadc_exit(void) ++{ ++ platform_driver_unregister(&snd_rpi_hifiberry_dacplusadc_driver); ++ platform_device_unregister(dmic_codec_dev); ++} ++module_exit(hifiberry_dacplusadc_exit); ++ ++MODULE_AUTHOR("Joerg Schambacher <joscha@schambacher.com>"); ++MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>"); ++MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+ADC"); ++MODULE_LICENSE("GPL v2"); |