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Signed-off-by: Jan Grulich <jan@grulich.eu>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| // Definitions for RaspiDACv3 | ||
| /dts-v1/; | ||
| /plugin/; | ||
|
|
||
| / { | ||
| compatible = "brcm,bcm2708"; | ||
|
|
||
| fragment@0 { | ||
| target = <&sound>; | ||
| __overlay__ { | ||
| compatible = "jg,raspidacv3"; | ||
| i2s-controller = <&i2s>; | ||
| status = "okay"; | ||
| }; | ||
| }; | ||
|
|
||
| fragment@1 { | ||
| target = <&i2s>; | ||
| __overlay__ { | ||
| status = "okay"; | ||
| }; | ||
| }; | ||
|
|
||
| fragment@2 { | ||
| target = <&i2c1>; | ||
| __overlay__ { | ||
| #address-cells = <1>; | ||
| #size-cells = <0>; | ||
| status = "okay"; | ||
|
|
||
| pcm5122@4c { | ||
| #sound-dai-cells = <0>; | ||
| compatible = "ti,pcm5122"; | ||
| reg = <0x4c>; | ||
| status = "okay"; | ||
| }; | ||
|
|
||
| tpa6130a2: tpa6130a2@60 { | ||
| compatible = "ti,tpa6130a2"; | ||
| reg = <0x60>; | ||
| status = "okay"; | ||
| }; | ||
| }; | ||
| }; | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,191 @@ | ||
| /* | ||
| * ASoC Driver for RaspiDAC v3 | ||
| * | ||
| * Author: Jan Grulich <jan@grulich.eu> | ||
| * Copyright 2015 | ||
| * based on code by Daniel Matuschek <daniel@hifiberry.com> | ||
| * based on code by Florian Meier <florian.meier@koalo.de> | ||
| * | ||
| * 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 <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 "../codecs/pcm512x.h" | ||
| #include "../codecs/tpa6130a2.h" | ||
|
|
||
| /* sound card init */ | ||
| static int snd_rpi_raspidac3_init(struct snd_soc_pcm_runtime *rtd) | ||
| { | ||
| int ret; | ||
| struct snd_soc_card *card = rtd->card; | ||
| 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, 0x08,0x00); | ||
|
|
||
| ret = snd_soc_limit_volume(codec, "Digital Playback Volume", 207); | ||
| if (ret < 0) | ||
| dev_warn(card->dev, "Failed to set volume limit: %d\n", ret); | ||
| else { | ||
| struct snd_kcontrol *kctl; | ||
|
|
||
| ret = tpa6130a2_add_controls(codec); | ||
| if (ret < 0) | ||
| dev_warn(card->dev, "Failed to add TPA6130A2 controls: %d\n", | ||
| ret); | ||
| ret = snd_soc_limit_volume(codec, | ||
| "TPA6130A2 Headphone Playback Volume", | ||
| 54); | ||
| if (ret < 0) | ||
| dev_warn(card->dev, "Failed to set TPA6130A2 volume limit: %d\n", | ||
| ret); | ||
| kctl = snd_soc_card_get_kcontrol(card, | ||
| "TPA6130A2 Headphone Playback Volume"); | ||
| if (kctl) { | ||
| strcpy(kctl->id.name, "Headphones Playback Volume"); | ||
| /* disable the volume dB scale so alsamixer works */ | ||
| kctl->vd[0].access = SNDRV_CTL_ELEM_ACCESS_READWRITE; | ||
| } | ||
|
|
||
| kctl = snd_soc_card_get_kcontrol(card, | ||
| "TPA6130A2 Headphone Playback Switch"); | ||
| if (kctl) | ||
| strcpy(kctl->id.name, "Headphones Playback Switch"); | ||
| } | ||
|
|
||
| return 0; | ||
| } | ||
|
|
||
| /* set hw parameters */ | ||
| static int snd_rpi_raspidac3_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; | ||
|
|
||
| unsigned int sample_bits = | ||
| snd_pcm_format_physical_width(params_format(params)); | ||
|
|
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| return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2); | ||
| } | ||
|
|
||
| /* startup */ | ||
| static int snd_rpi_raspidac3_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); | ||
| tpa6130a2_stereo_enable(codec, 1); | ||
| return 0; | ||
| } | ||
|
|
||
| /* shutdown */ | ||
| static void snd_rpi_raspidac3_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); | ||
| tpa6130a2_stereo_enable(codec, 0); | ||
| } | ||
|
|
||
| /* machine stream operations */ | ||
| static struct snd_soc_ops snd_rpi_raspidac3_ops = { | ||
| .hw_params = snd_rpi_raspidac3_hw_params, | ||
| .startup = snd_rpi_raspidac3_startup, | ||
| .shutdown = snd_rpi_raspidac3_shutdown, | ||
| }; | ||
|
|
||
| /* interface setup */ | ||
| static struct snd_soc_dai_link snd_rpi_raspidac3_dai[] = { | ||
| { | ||
| .name = "RaspiDAC Rev.3x", | ||
| .stream_name = "RaspiDAC HiFi", | ||
| .cpu_dai_name = "bcm2708-i2s.0", | ||
| .codec_dai_name = "pcm512x-hifi", | ||
| .platform_name = "bcm2708-i2s.0", | ||
| .codec_name = "pcm512x.1-004c", | ||
| .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | | ||
| SND_SOC_DAIFMT_CBS_CFS, | ||
| .ops = &snd_rpi_raspidac3_ops, | ||
| .init = snd_rpi_raspidac3_init, | ||
| }, | ||
| }; | ||
|
|
||
| /* audio machine driver */ | ||
| static struct snd_soc_card snd_rpi_raspidac3 = { | ||
| .name = "RaspiDAC Rev.3x HiFi Audio Card", | ||
| .dai_link = snd_rpi_raspidac3_dai, | ||
| .num_links = ARRAY_SIZE(snd_rpi_raspidac3_dai), | ||
| }; | ||
|
|
||
| /* sound card test */ | ||
| static int snd_rpi_raspidac3_probe(struct platform_device *pdev) | ||
| { | ||
| int ret = 0; | ||
|
|
||
| snd_rpi_raspidac3.dev = &pdev->dev; | ||
|
|
||
| if (pdev->dev.of_node) { | ||
| struct device_node *i2s_node; | ||
| struct snd_soc_dai_link *dai = &snd_rpi_raspidac3_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_raspidac3); | ||
| if (ret) | ||
| dev_err(&pdev->dev, | ||
| "snd_soc_register_card() failed: %d\n", ret); | ||
|
|
||
| return ret; | ||
| } | ||
|
|
||
| /* sound card disconnect */ | ||
| static int snd_rpi_raspidac3_remove(struct platform_device *pdev) | ||
| { | ||
| return snd_soc_unregister_card(&snd_rpi_raspidac3); | ||
| } | ||
|
|
||
| static const struct of_device_id raspidac3_of_match[] = { | ||
| { .compatible = "jg,raspidacv3", }, | ||
| {}, | ||
| }; | ||
| MODULE_DEVICE_TABLE(of, raspidac3_of_match); | ||
|
|
||
| /* sound card platform driver */ | ||
| static struct platform_driver snd_rpi_raspidac3_driver = { | ||
| .driver = { | ||
| .name = "snd-rpi-raspidac3", | ||
| .owner = THIS_MODULE, | ||
| .of_match_table = raspidac3_of_match, | ||
| }, | ||
| .probe = snd_rpi_raspidac3_probe, | ||
| .remove = snd_rpi_raspidac3_remove, | ||
| }; | ||
|
|
||
| module_platform_driver(snd_rpi_raspidac3_driver); | ||
|
|
||
| MODULE_AUTHOR("Jan Grulich <jan@grulich.eu>"); | ||
| MODULE_DESCRIPTION("ASoC Driver for RaspiDAC Rev.3x"); | ||
| MODULE_LICENSE("GPL v2"); |