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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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218e18a372
The new GPIO descriptor API is now the preferred way for handling GPIOs. It also allows us to separate the platform depended code from the platform independent code (Which will make it possible to increase build test coverage of the platform independent code). Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Mark Brown <broonie@linaro.org>
120 lines
3.1 KiB
C
120 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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