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![Uwe Kleine-König](/assets/img/avatar_default.png)
The function snd_soc_unregister_card() returned 0 unconditionally and most callers don't care to check the return value. Make it return void and adapt the callers that didn't ignore the return value before. This is a preparation for making platform remove callbacks return void. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20220621145834.198519-1-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
184 lines
4.4 KiB
C
184 lines
4.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* ASoC driver for PROTO AudioCODEC (with a WM8731)
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*
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* Author: Florian Meier, <koalo@koalo.de>
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* Copyright 2013
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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 <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/jack.h>
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#include "../codecs/wm8731.h"
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#define XTAL_RATE 12288000 /* This is fixed on this board */
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static int snd_proto_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_card *card = rtd->card;
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
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/* Set proto sysclk */
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int ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL,
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XTAL_RATE, SND_SOC_CLOCK_IN);
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if (ret < 0) {
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dev_err(card->dev, "Failed to set WM8731 SYSCLK: %d\n",
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ret);
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return ret;
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}
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return 0;
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}
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static const struct snd_soc_dapm_widget snd_proto_widget[] = {
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SND_SOC_DAPM_MIC("Microphone Jack", NULL),
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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};
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static const struct snd_soc_dapm_route snd_proto_route[] = {
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/* speaker connected to LHPOUT/RHPOUT */
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{"Headphone Jack", NULL, "LHPOUT"},
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{"Headphone Jack", NULL, "RHPOUT"},
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/* mic is connected to Mic Jack, with WM8731 Mic Bias */
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{"MICIN", NULL, "Mic Bias"},
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{"Mic Bias", NULL, "Microphone Jack"},
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};
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/* audio machine driver */
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static struct snd_soc_card snd_proto = {
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.name = "snd_mikroe_proto",
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.owner = THIS_MODULE,
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.dapm_widgets = snd_proto_widget,
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.num_dapm_widgets = ARRAY_SIZE(snd_proto_widget),
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.dapm_routes = snd_proto_route,
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.num_dapm_routes = ARRAY_SIZE(snd_proto_route),
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};
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static int snd_proto_probe(struct platform_device *pdev)
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{
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struct snd_soc_dai_link *dai;
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struct snd_soc_dai_link_component *comp;
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struct device_node *np = pdev->dev.of_node;
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struct device_node *codec_np, *cpu_np;
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struct device_node *bitclkmaster = NULL;
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struct device_node *framemaster = NULL;
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unsigned int dai_fmt;
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int ret = 0;
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if (!np) {
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dev_err(&pdev->dev, "No device node supplied\n");
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return -EINVAL;
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}
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snd_proto.dev = &pdev->dev;
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ret = snd_soc_of_parse_card_name(&snd_proto, "model");
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if (ret)
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return ret;
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dai = devm_kzalloc(&pdev->dev, sizeof(*dai), GFP_KERNEL);
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if (!dai)
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return -ENOMEM;
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/* for cpus/codecs/platforms */
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comp = devm_kzalloc(&pdev->dev, 3 * sizeof(*comp), GFP_KERNEL);
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if (!comp)
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return -ENOMEM;
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snd_proto.dai_link = dai;
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snd_proto.num_links = 1;
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dai->cpus = &comp[0];
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dai->num_cpus = 1;
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dai->codecs = &comp[1];
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dai->num_codecs = 1;
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dai->platforms = &comp[2];
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dai->num_platforms = 1;
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dai->name = "WM8731";
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dai->stream_name = "WM8731 HiFi";
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dai->codecs->dai_name = "wm8731-hifi";
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dai->init = &snd_proto_init;
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codec_np = of_parse_phandle(np, "audio-codec", 0);
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if (!codec_np) {
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dev_err(&pdev->dev, "audio-codec node missing\n");
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return -EINVAL;
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}
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dai->codecs->of_node = codec_np;
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cpu_np = of_parse_phandle(np, "i2s-controller", 0);
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if (!cpu_np) {
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dev_err(&pdev->dev, "i2s-controller missing\n");
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ret = -EINVAL;
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goto put_codec_node;
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}
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dai->cpus->of_node = cpu_np;
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dai->platforms->of_node = cpu_np;
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dai_fmt = snd_soc_daifmt_parse_format(np, NULL);
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snd_soc_daifmt_parse_clock_provider_as_phandle(np, NULL,
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&bitclkmaster, &framemaster);
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if (bitclkmaster != framemaster) {
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dev_err(&pdev->dev, "Must be the same bitclock and frame master\n");
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ret = -EINVAL;
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goto put_cpu_node;
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}
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if (bitclkmaster) {
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if (codec_np == bitclkmaster)
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dai_fmt |= SND_SOC_DAIFMT_CBP_CFP;
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else
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dai_fmt |= SND_SOC_DAIFMT_CBC_CFC;
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} else {
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dai_fmt |= snd_soc_daifmt_parse_clock_provider_as_flag(np, NULL);
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}
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dai->dai_fmt = dai_fmt;
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ret = snd_soc_register_card(&snd_proto);
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if (ret)
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dev_err_probe(&pdev->dev, ret,
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"snd_soc_register_card() failed\n");
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put_cpu_node:
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of_node_put(bitclkmaster);
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of_node_put(framemaster);
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of_node_put(cpu_np);
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put_codec_node:
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of_node_put(codec_np);
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return ret;
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}
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static int snd_proto_remove(struct platform_device *pdev)
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{
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snd_soc_unregister_card(&snd_proto);
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return 0;
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}
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static const struct of_device_id snd_proto_of_match[] = {
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{ .compatible = "mikroe,mikroe-proto", },
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{},
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};
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MODULE_DEVICE_TABLE(of, snd_proto_of_match);
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static struct platform_driver snd_proto_driver = {
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.driver = {
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.name = "snd-mikroe-proto",
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.of_match_table = snd_proto_of_match,
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},
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.probe = snd_proto_probe,
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.remove = snd_proto_remove,
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};
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module_platform_driver(snd_proto_driver);
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MODULE_AUTHOR("Florian Meier");
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MODULE_DESCRIPTION("ASoC Driver for PROTO board (WM8731)");
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MODULE_LICENSE("GPL");
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