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Added IQaudIO Pi-Codec board support (#2969)
Add support for the IQaudIO Pi-Codec board. Signed-off-by: Gordon <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| // Definitions for IQaudIO CODEC | ||
| /dts-v1/; | ||
| /plugin/; | ||
|
|
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| / { | ||
| compatible = "brcm,bcm2708"; | ||
|
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| fragment@0 { | ||
| target = <&i2s>; | ||
| __overlay__ { | ||
| status = "okay"; | ||
| }; | ||
| }; | ||
|
|
||
| fragment@1 { | ||
| target = <&i2c1>; | ||
| __overlay__ { | ||
| #address-cells = <1>; | ||
| #size-cells = <0>; | ||
| status = "okay"; | ||
|
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| da2713@1a { | ||
| #sound-dai-cells = <0>; | ||
| compatible = "dlg,da7213"; | ||
| reg = <0x1a>; | ||
| status = "okay"; | ||
| }; | ||
| }; | ||
| }; | ||
|
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| fragment@2 { | ||
| target = <&sound>; | ||
| iqaudio_dac: __overlay__ { | ||
| compatible = "iqaudio,iqaudio-codec"; | ||
| i2s-controller = <&i2s>; | ||
| status = "okay"; | ||
| }; | ||
| }; | ||
|
|
||
| __overrides__ { | ||
| }; | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,250 @@ | ||
| /* | ||
| * ASoC Driver for IQaudIO Raspberry Pi Codec board | ||
| * | ||
| * Author: Gordon Garrity <[email protected]> | ||
| * (C) Copyright IQaudio Limited, 2017-2019 | ||
| * | ||
| * 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/gpio/consumer.h> | ||
| #include <linux/platform_device.h> | ||
|
|
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| #include <sound/core.h> | ||
| #include <sound/pcm.h> | ||
| #include <sound/pcm_params.h> | ||
| #include <sound/soc.h> | ||
| #include <sound/jack.h> | ||
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| #include <linux/acpi.h> | ||
| #include <linux/slab.h> | ||
| #include "../codecs/da7213.h" | ||
|
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| static int pll_out = DA7213_PLL_FREQ_OUT_90316800; | ||
|
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| static int snd_rpi_iqaudio_pll_control(struct snd_soc_dapm_widget *w, | ||
| struct snd_kcontrol *k, int event) | ||
| { | ||
| int ret = 0; | ||
| struct snd_soc_dapm_context *dapm = w->dapm; | ||
| struct snd_soc_card *card = dapm->card; | ||
| struct snd_soc_pcm_runtime *rtd = | ||
| snd_soc_get_pcm_runtime(card, card->dai_link[0].name); | ||
| struct snd_soc_dai *codec_dai = rtd->codec_dai; | ||
|
|
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| if (SND_SOC_DAPM_EVENT_OFF(event)) { | ||
| ret = snd_soc_dai_set_pll(codec_dai, 0, DA7213_SYSCLK_MCLK, 0, | ||
| 0); | ||
| if (ret) | ||
| dev_err(card->dev, "Failed to bypass PLL: %d\n", ret); | ||
| } else if (SND_SOC_DAPM_EVENT_ON(event)) { | ||
| ret = snd_soc_dai_set_pll(codec_dai, 0, DA7213_SYSCLK_PLL, 0, | ||
| pll_out); | ||
| if (ret) | ||
| dev_err(card->dev, "Failed to enable PLL: %d\n", ret); | ||
| } | ||
|
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| return ret; | ||
| } | ||
|
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| static int snd_rpi_iqaudio_post_dapm_event(struct snd_soc_dapm_widget *w, | ||
| struct snd_kcontrol *kcontrol, | ||
| int event) | ||
| { | ||
| switch (event) { | ||
| case SND_SOC_DAPM_POST_PMU: | ||
| /* Delay for mic bias ramp */ | ||
| msleep(1000); | ||
| break; | ||
| default: | ||
| break; | ||
| } | ||
|
|
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| return 0; | ||
| } | ||
|
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| static const struct snd_soc_dapm_widget dapm_widgets[] = { | ||
| SND_SOC_DAPM_HP("HP Jack", NULL), | ||
| SND_SOC_DAPM_MIC("MIC Jack", NULL), | ||
| SND_SOC_DAPM_MIC("Onboard MIC", NULL), | ||
| SND_SOC_DAPM_LINE("AUX Jack", NULL), | ||
| SND_SOC_DAPM_SUPPLY("PLL Control", SND_SOC_NOPM, 0, 0, | ||
| snd_rpi_iqaudio_pll_control, | ||
| SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), | ||
| SND_SOC_DAPM_POST("Post Power Up Event", snd_rpi_iqaudio_post_dapm_event), | ||
| }; | ||
|
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| static const struct snd_soc_dapm_route audio_map[] = { | ||
| {"HP Jack", NULL, "HPL"}, | ||
| {"HP Jack", NULL, "HPR"}, | ||
| {"HP Jack", NULL, "PLL Control"}, | ||
|
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| {"AUX Jack", NULL, "AUXR"}, | ||
| {"AUX Jack", NULL, "AUXL"}, | ||
| {"AUX Jack", NULL, "PLL Control"}, | ||
|
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| /* Assume Mic1 is linked to Headset and Mic2 to on-board mic */ | ||
| {"MIC Jack", NULL, "MIC1"}, | ||
| {"MIC Jack", NULL, "PLL Control"}, | ||
| {"Onboard MIC", NULL, "MIC2"}, | ||
| {"Onboard MIC", NULL, "PLL Control"}, | ||
| }; | ||
|
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| /* machine stream operations */ | ||
|
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| static int snd_rpi_iqaudio_codec_init(struct snd_soc_pcm_runtime *rtd) | ||
| { | ||
| struct snd_soc_dai *codec_dai = rtd->codec_dai; | ||
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | ||
| int ret; | ||
|
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| /* Set bclk ratio to align with codec's BCLK rate */ | ||
| ret = snd_soc_dai_set_bclk_ratio(cpu_dai, 64); | ||
| if (ret) { | ||
| dev_err(rtd->dev, "Failed to set CPU BLCK ratio\n"); | ||
| return ret; | ||
| } | ||
|
|
||
| /* Set MCLK frequency to codec, onboard 11.2896MHz clock */ | ||
| return snd_soc_dai_set_sysclk(codec_dai, DA7213_CLKSRC_MCLK, 11289600, | ||
| SND_SOC_CLOCK_OUT); | ||
| } | ||
|
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| static int snd_rpi_iqaudio_codec_hw_params(struct snd_pcm_substream *substream, | ||
| struct snd_pcm_hw_params *params) | ||
| { | ||
| struct snd_soc_pcm_runtime *rtd = substream->private_data; | ||
| unsigned int samplerate = params_rate(params); | ||
|
|
||
| switch (samplerate) { | ||
| case 8000: | ||
| case 16000: | ||
| case 32000: | ||
| case 48000: | ||
| case 96000: | ||
| pll_out = DA7213_PLL_FREQ_OUT_98304000; | ||
| return 0; | ||
| case 44100: | ||
| case 88200: | ||
| pll_out = DA7213_PLL_FREQ_OUT_90316800; | ||
| return 0; | ||
| default: | ||
| dev_err(rtd->dev,"Unsupported samplerate %d\n", samplerate); | ||
| return -EINVAL; | ||
| } | ||
| } | ||
|
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| static const struct snd_soc_ops snd_rpi_iqaudio_codec_ops = { | ||
| .hw_params = snd_rpi_iqaudio_codec_hw_params, | ||
| }; | ||
|
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|
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| static struct snd_soc_dai_link snd_rpi_iqaudio_codec_dai[] = { | ||
| { | ||
| .cpu_dai_name = "bcm2708-i2s.0", | ||
| .codec_dai_name = "da7213-hifi", | ||
| .platform_name = "bmc2708-i2s.0", | ||
| .codec_name = "da7213.1-001a", | ||
| .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | | ||
| SND_SOC_DAIFMT_CBM_CFM, | ||
| .init = snd_rpi_iqaudio_codec_init, | ||
| .ops = &snd_rpi_iqaudio_codec_ops, | ||
| .symmetric_rates = 1, | ||
| .symmetric_channels = 1, | ||
| .symmetric_samplebits = 1, | ||
| }, | ||
| }; | ||
|
|
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| /* audio machine driver */ | ||
| static struct snd_soc_card snd_rpi_iqaudio_codec = { | ||
| .owner = THIS_MODULE, | ||
| .dai_link = snd_rpi_iqaudio_codec_dai, | ||
| .num_links = ARRAY_SIZE(snd_rpi_iqaudio_codec_dai), | ||
| .dapm_widgets = dapm_widgets, | ||
| .num_dapm_widgets = ARRAY_SIZE(dapm_widgets), | ||
| .dapm_routes = audio_map, | ||
| .num_dapm_routes = ARRAY_SIZE(audio_map), | ||
| }; | ||
|
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| static int snd_rpi_iqaudio_codec_probe(struct platform_device *pdev) | ||
| { | ||
| int ret = 0; | ||
|
|
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| snd_rpi_iqaudio_codec.dev = &pdev->dev; | ||
|
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| if (pdev->dev.of_node) { | ||
| struct device_node *i2s_node; | ||
| struct snd_soc_card *card = &snd_rpi_iqaudio_codec; | ||
| struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_codec_dai[0]; | ||
|
|
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| 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; | ||
| } | ||
|
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| if (of_property_read_string(pdev->dev.of_node, "card_name", | ||
| &card->name)) | ||
| card->name = "IQaudIOCODEC"; | ||
|
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| if (of_property_read_string(pdev->dev.of_node, "dai_name", | ||
| &dai->name)) | ||
| dai->name = "IQaudIO CODEC"; | ||
|
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| if (of_property_read_string(pdev->dev.of_node, | ||
| "dai_stream_name", &dai->stream_name)) | ||
| dai->stream_name = "IQaudIO CODEC HiFi v1.1"; | ||
|
|
||
| } | ||
|
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| ret = snd_soc_register_card(&snd_rpi_iqaudio_codec); | ||
| if (ret) { | ||
| if (ret != -EPROBE_DEFER) | ||
| dev_err(&pdev->dev, | ||
| "snd_soc_register_card() failed: %d\n", ret); | ||
| return ret; | ||
| } | ||
|
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| return 0; | ||
| } | ||
|
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| static int snd_rpi_iqaudio_codec_remove(struct platform_device *pdev) | ||
| { | ||
| return snd_soc_unregister_card(&snd_rpi_iqaudio_codec); | ||
| } | ||
|
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| static const struct of_device_id iqaudio_of_match[] = { | ||
| { .compatible = "iqaudio,iqaudio-codec", }, | ||
| {}, | ||
| }; | ||
|
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| MODULE_DEVICE_TABLE(of, iqaudio_of_match); | ||
|
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| static struct platform_driver snd_rpi_iqaudio_codec_driver = { | ||
| .driver = { | ||
| .name = "snd-rpi-iqaudio-codec", | ||
| .owner = THIS_MODULE, | ||
| .of_match_table = iqaudio_of_match, | ||
| }, | ||
| .probe = snd_rpi_iqaudio_codec_probe, | ||
| .remove = snd_rpi_iqaudio_codec_remove, | ||
| }; | ||
|
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| module_platform_driver(snd_rpi_iqaudio_codec_driver); | ||
|
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| MODULE_AUTHOR("Gordon Garrity <[email protected]>"); | ||
| MODULE_DESCRIPTION("ASoC Driver for IQaudIO CODEC"); | ||
| MODULE_LICENSE("GPL v2"); |