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185 lines
4.5 KiB
185 lines
4.5 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* tegra_wm8753.c - Tegra machine ASoC driver for boards using WM8753 codec. |
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* |
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* Author: Stephen Warren <[email protected]> |
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* Copyright (C) 2010-2012 - NVIDIA, Inc. |
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* |
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* Based on code copyright/by: |
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* |
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* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd. |
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* |
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* Copyright 2007 Wolfson Microelectronics PLC. |
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* Author: Graeme Gregory |
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* [email protected] or [email protected] |
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*/ |
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#include <linux/module.h> |
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#include <linux/platform_device.h> |
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#include <linux/slab.h> |
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#include <linux/gpio.h> |
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#include <linux/of_gpio.h> |
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#include <sound/core.h> |
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#include <sound/jack.h> |
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#include <sound/pcm.h> |
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#include <sound/pcm_params.h> |
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#include <sound/soc.h> |
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#include "../codecs/wm8753.h" |
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#include "tegra_asoc_utils.h" |
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#define DRV_NAME "tegra-snd-wm8753" |
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struct tegra_wm8753 { |
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struct tegra_asoc_utils_data util_data; |
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}; |
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static int tegra_wm8753_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *params) |
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{ |
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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struct snd_soc_card *card = rtd->card; |
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struct tegra_wm8753 *machine = snd_soc_card_get_drvdata(card); |
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int srate, mclk; |
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int err; |
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srate = params_rate(params); |
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switch (srate) { |
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case 11025: |
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case 22050: |
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case 44100: |
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case 88200: |
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mclk = 11289600; |
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break; |
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default: |
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mclk = 12288000; |
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break; |
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} |
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err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); |
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if (err < 0) { |
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dev_err(card->dev, "Can't configure clocks\n"); |
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return err; |
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} |
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err = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, mclk, |
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SND_SOC_CLOCK_IN); |
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if (err < 0) { |
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dev_err(card->dev, "codec_dai clock not set\n"); |
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return err; |
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} |
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return 0; |
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} |
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static const struct snd_soc_ops tegra_wm8753_ops = { |
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.hw_params = tegra_wm8753_hw_params, |
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}; |
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static const struct snd_soc_dapm_widget tegra_wm8753_dapm_widgets[] = { |
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SND_SOC_DAPM_HP("Headphone Jack", NULL), |
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SND_SOC_DAPM_MIC("Mic Jack", NULL), |
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}; |
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SND_SOC_DAILINK_DEFS(pcm, |
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DAILINK_COMP_ARRAY(COMP_EMPTY()), |
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DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8753-hifi")), |
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DAILINK_COMP_ARRAY(COMP_EMPTY())); |
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static struct snd_soc_dai_link tegra_wm8753_dai = { |
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.name = "WM8753", |
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.stream_name = "WM8753 PCM", |
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.ops = &tegra_wm8753_ops, |
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.dai_fmt = SND_SOC_DAIFMT_I2S | |
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SND_SOC_DAIFMT_NB_NF | |
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SND_SOC_DAIFMT_CBS_CFS, |
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SND_SOC_DAILINK_REG(pcm), |
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}; |
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static struct snd_soc_card snd_soc_tegra_wm8753 = { |
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.name = "tegra-wm8753", |
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.owner = THIS_MODULE, |
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.dai_link = &tegra_wm8753_dai, |
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.num_links = 1, |
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.dapm_widgets = tegra_wm8753_dapm_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(tegra_wm8753_dapm_widgets), |
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.fully_routed = true, |
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}; |
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static int tegra_wm8753_driver_probe(struct platform_device *pdev) |
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{ |
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struct device_node *np = pdev->dev.of_node; |
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struct snd_soc_card *card = &snd_soc_tegra_wm8753; |
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struct tegra_wm8753 *machine; |
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int ret; |
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machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8753), |
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GFP_KERNEL); |
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if (!machine) |
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return -ENOMEM; |
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card->dev = &pdev->dev; |
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snd_soc_card_set_drvdata(card, machine); |
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ret = snd_soc_of_parse_card_name(card, "nvidia,model"); |
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if (ret) |
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return ret; |
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ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing"); |
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if (ret) |
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return ret; |
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tegra_wm8753_dai.codecs->of_node = of_parse_phandle(np, |
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"nvidia,audio-codec", 0); |
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if (!tegra_wm8753_dai.codecs->of_node) { |
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dev_err(&pdev->dev, |
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"Property 'nvidia,audio-codec' missing or invalid\n"); |
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return -EINVAL; |
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} |
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tegra_wm8753_dai.cpus->of_node = of_parse_phandle(np, |
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"nvidia,i2s-controller", 0); |
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if (!tegra_wm8753_dai.cpus->of_node) { |
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dev_err(&pdev->dev, |
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"Property 'nvidia,i2s-controller' missing or invalid\n"); |
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return -EINVAL; |
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} |
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tegra_wm8753_dai.platforms->of_node = tegra_wm8753_dai.cpus->of_node; |
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ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); |
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if (ret) |
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return ret; |
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ret = devm_snd_soc_register_card(&pdev->dev, card); |
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if (ret) |
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return dev_err_probe(&pdev->dev, ret, |
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"snd_soc_register_card failed\n"); |
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return 0; |
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} |
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static const struct of_device_id tegra_wm8753_of_match[] = { |
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{ .compatible = "nvidia,tegra-audio-wm8753", }, |
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{}, |
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}; |
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static struct platform_driver tegra_wm8753_driver = { |
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.driver = { |
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.name = DRV_NAME, |
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.pm = &snd_soc_pm_ops, |
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.of_match_table = tegra_wm8753_of_match, |
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}, |
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.probe = tegra_wm8753_driver_probe, |
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}; |
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module_platform_driver(tegra_wm8753_driver); |
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MODULE_AUTHOR("Stephen Warren <[email protected]>"); |
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MODULE_DESCRIPTION("Tegra+WM8753 machine ASoC driver"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS("platform:" DRV_NAME); |
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MODULE_DEVICE_TABLE(of, tegra_wm8753_of_match);
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