121 lines
3.1 KiB
C
121 lines
3.1 KiB
C
/*
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* Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/timer.h>
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#include <linux/interrupt.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 <linux/gpio/consumer.h>
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struct qi_lb60 {
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struct gpio_desc *snd_gpio;
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struct gpio_desc *amp_gpio;
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};
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static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
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struct snd_kcontrol *ctrl, int event)
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{
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struct qi_lb60 *qi_lb60 = snd_soc_card_get_drvdata(widget->dapm->card);
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int on = !SND_SOC_DAPM_EVENT_OFF(event);
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gpiod_set_value_cansleep(qi_lb60->snd_gpio, on);
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gpiod_set_value_cansleep(qi_lb60->amp_gpio, on);
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return 0;
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}
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static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
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SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
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SND_SOC_DAPM_MIC("Mic", NULL),
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};
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static const struct snd_soc_dapm_route qi_lb60_routes[] = {
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{"Mic", NULL, "MIC"},
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{"Speaker", NULL, "LOUT"},
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{"Speaker", NULL, "ROUT"},
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};
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static struct snd_soc_dai_link qi_lb60_dai = {
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.name = "jz4740",
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.stream_name = "jz4740",
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.cpu_dai_name = "jz4740-i2s",
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.platform_name = "jz4740-i2s",
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.codec_dai_name = "jz4740-hifi",
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.codec_name = "jz4740-codec",
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM,
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};
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static struct snd_soc_card qi_lb60_card = {
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.name = "QI LB60",
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.owner = THIS_MODULE,
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.dai_link = &qi_lb60_dai,
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.num_links = 1,
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.dapm_widgets = qi_lb60_widgets,
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.num_dapm_widgets = ARRAY_SIZE(qi_lb60_widgets),
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.dapm_routes = qi_lb60_routes,
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.num_dapm_routes = ARRAY_SIZE(qi_lb60_routes),
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.fully_routed = true,
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};
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static int qi_lb60_probe(struct platform_device *pdev)
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{
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struct qi_lb60 *qi_lb60;
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struct snd_soc_card *card = &qi_lb60_card;
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int ret;
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qi_lb60 = devm_kzalloc(&pdev->dev, sizeof(*qi_lb60), GFP_KERNEL);
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if (!qi_lb60)
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return -ENOMEM;
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qi_lb60->snd_gpio = devm_gpiod_get(&pdev->dev, "snd");
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if (IS_ERR(qi_lb60->snd_gpio))
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return PTR_ERR(qi_lb60->snd_gpio);
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ret = gpiod_direction_output(qi_lb60->snd_gpio, 0);
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if (ret)
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return ret;
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qi_lb60->amp_gpio = devm_gpiod_get(&pdev->dev, "amp");
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if (IS_ERR(qi_lb60->amp_gpio))
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return PTR_ERR(qi_lb60->amp_gpio);
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ret = gpiod_direction_output(qi_lb60->amp_gpio, 0);
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if (ret)
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return ret;
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card->dev = &pdev->dev;
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snd_soc_card_set_drvdata(card, qi_lb60);
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return devm_snd_soc_register_card(&pdev->dev, card);
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}
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static struct platform_driver qi_lb60_driver = {
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.driver = {
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.name = "qi-lb60-audio",
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.owner = THIS_MODULE,
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},
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.probe = qi_lb60_probe,
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};
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module_platform_driver(qi_lb60_driver);
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MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
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MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:qi-lb60-audio");
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