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![Codrut Grosu](/assets/img/avatar_default.png)
This was reported by checkpatch.pl Signed-off-by: Codrut GROSU <codrut.cristian.grosu@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
156 lines
4.4 KiB
C
156 lines
4.4 KiB
C
/*
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* SiRF audio card driver
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*
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* Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
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*
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* Licensed under GPLv2 or later.
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*/
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#include <linux/platform_device.h>
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#include <linux/module.h>
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#include <linux/of.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/pcm.h>
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#include <sound/soc.h>
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struct sirf_audio_card {
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unsigned int gpio_hp_pa;
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unsigned int gpio_spk_pa;
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};
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static int sirf_audio_hp_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *ctrl, int event)
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{
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struct snd_soc_dapm_context *dapm = w->dapm;
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struct snd_soc_card *card = dapm->card;
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struct sirf_audio_card *sirf_audio_card = snd_soc_card_get_drvdata(card);
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int on = !SND_SOC_DAPM_EVENT_OFF(event);
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if (gpio_is_valid(sirf_audio_card->gpio_hp_pa))
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gpio_set_value(sirf_audio_card->gpio_hp_pa, on);
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return 0;
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}
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static int sirf_audio_spk_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *ctrl, int event)
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{
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struct snd_soc_dapm_context *dapm = w->dapm;
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struct snd_soc_card *card = dapm->card;
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struct sirf_audio_card *sirf_audio_card = snd_soc_card_get_drvdata(card);
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int on = !SND_SOC_DAPM_EVENT_OFF(event);
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if (gpio_is_valid(sirf_audio_card->gpio_spk_pa))
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gpio_set_value(sirf_audio_card->gpio_spk_pa, on);
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return 0;
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}
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static const struct snd_soc_dapm_widget sirf_audio_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Hp", sirf_audio_hp_event),
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SND_SOC_DAPM_SPK("Ext Spk", sirf_audio_spk_event),
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SND_SOC_DAPM_MIC("Ext Mic", NULL),
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};
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static const struct snd_soc_dapm_route intercon[] = {
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{"Hp", NULL, "HPOUTL"},
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{"Hp", NULL, "HPOUTR"},
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{"Ext Spk", NULL, "SPKOUT"},
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{"MICIN1", NULL, "Mic Bias"},
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{"Mic Bias", NULL, "Ext Mic"},
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};
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/* Digital audio interface glue - connects codec <--> CPU */
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static struct snd_soc_dai_link sirf_audio_dai_link[] = {
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{
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.name = "SiRF audio card",
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.stream_name = "SiRF audio HiFi",
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.codec_dai_name = "sirf-audio-codec",
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},
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};
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/* Audio machine driver */
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static struct snd_soc_card snd_soc_sirf_audio_card = {
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.name = "SiRF audio card",
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.owner = THIS_MODULE,
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.dai_link = sirf_audio_dai_link,
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.num_links = ARRAY_SIZE(sirf_audio_dai_link),
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.dapm_widgets = sirf_audio_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(sirf_audio_dapm_widgets),
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.dapm_routes = intercon,
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.num_dapm_routes = ARRAY_SIZE(intercon),
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};
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static int sirf_audio_probe(struct platform_device *pdev)
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{
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struct snd_soc_card *card = &snd_soc_sirf_audio_card;
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struct sirf_audio_card *sirf_audio_card;
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int ret;
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sirf_audio_card = devm_kzalloc(&pdev->dev, sizeof(struct sirf_audio_card),
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GFP_KERNEL);
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if (sirf_audio_card == NULL)
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return -ENOMEM;
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sirf_audio_dai_link[0].cpu_of_node =
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of_parse_phandle(pdev->dev.of_node, "sirf,audio-platform", 0);
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sirf_audio_dai_link[0].platform_of_node =
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of_parse_phandle(pdev->dev.of_node, "sirf,audio-platform", 0);
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sirf_audio_dai_link[0].codec_of_node =
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of_parse_phandle(pdev->dev.of_node, "sirf,audio-codec", 0);
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sirf_audio_card->gpio_spk_pa = of_get_named_gpio(pdev->dev.of_node,
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"spk-pa-gpios", 0);
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sirf_audio_card->gpio_hp_pa = of_get_named_gpio(pdev->dev.of_node,
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"hp-pa-gpios", 0);
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if (gpio_is_valid(sirf_audio_card->gpio_spk_pa)) {
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ret = devm_gpio_request_one(&pdev->dev,
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sirf_audio_card->gpio_spk_pa,
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GPIOF_OUT_INIT_LOW, "SPA_PA_SD");
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if (ret) {
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dev_err(&pdev->dev,
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"Failed to request GPIO_%d for reset: %d\n",
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sirf_audio_card->gpio_spk_pa, ret);
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return ret;
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}
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}
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if (gpio_is_valid(sirf_audio_card->gpio_hp_pa)) {
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ret = devm_gpio_request_one(&pdev->dev,
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sirf_audio_card->gpio_hp_pa,
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GPIOF_OUT_INIT_LOW, "HP_PA_SD");
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if (ret) {
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dev_err(&pdev->dev,
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"Failed to request GPIO_%d for reset: %d\n",
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sirf_audio_card->gpio_hp_pa, ret);
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return ret;
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}
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}
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card->dev = &pdev->dev;
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snd_soc_card_set_drvdata(card, sirf_audio_card);
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ret = devm_snd_soc_register_card(&pdev->dev, card);
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if (ret)
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dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
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return ret;
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}
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static const struct of_device_id sirf_audio_of_match[] = {
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{.compatible = "sirf,sirf-audio-card", },
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{ },
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};
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MODULE_DEVICE_TABLE(of, sirf_audio_of_match);
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static struct platform_driver sirf_audio_driver = {
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.driver = {
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.name = "sirf-audio-card",
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.pm = &snd_soc_pm_ops,
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.of_match_table = sirf_audio_of_match,
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},
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.probe = sirf_audio_probe,
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};
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module_platform_driver(sirf_audio_driver);
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MODULE_AUTHOR("RongJun Ying <RongJun.Ying@csr.com>");
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MODULE_DESCRIPTION("ALSA SoC SIRF audio card driver");
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MODULE_LICENSE("GPL v2");
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