mirror of https://gitee.com/openkylin/linux.git
147 lines
3.7 KiB
C
147 lines
3.7 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.h>
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#define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29)
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#define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4)
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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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int on = !SND_SOC_DAPM_EVENT_OFF(event);
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gpio_set_value(QI_LB60_SND_GPIO, on);
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gpio_set_value(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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#define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S | \
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SND_SOC_DAIFMT_NB_NF | \
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SND_SOC_DAIFMT_CBM_CFM)
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static int qi_lb60_codec_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_codec *codec = rtd->codec;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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struct snd_soc_dapm_context *dapm = &codec->dapm;
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int ret;
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snd_soc_dapm_nc_pin(dapm, "LIN");
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snd_soc_dapm_nc_pin(dapm, "RIN");
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ret = snd_soc_dai_set_fmt(cpu_dai, QI_LB60_DAIFMT);
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if (ret < 0) {
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dev_err(codec->dev, "Failed to set cpu dai format: %d\n", 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 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-pcm-audio",
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.codec_dai_name = "jz4740-hifi",
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.codec_name = "jz4740-codec",
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.init = qi_lb60_codec_init,
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};
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static struct snd_soc_card qi_lb60 = {
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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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};
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static struct platform_device *qi_lb60_snd_device;
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static const struct gpio qi_lb60_gpios[] = {
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{ QI_LB60_SND_GPIO, GPIOF_OUT_INIT_LOW, "SND" },
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{ QI_LB60_AMP_GPIO, GPIOF_OUT_INIT_LOW, "AMP" },
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};
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static int __init qi_lb60_init(void)
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{
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int ret;
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qi_lb60_snd_device = platform_device_alloc("soc-audio", -1);
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if (!qi_lb60_snd_device)
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return -ENOMEM;
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ret = gpio_request_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
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if (ret) {
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pr_err("qi_lb60 snd: Failed to request gpios: %d\n", ret);
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goto err_device_put;
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}
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platform_set_drvdata(qi_lb60_snd_device, &qi_lb60);
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ret = platform_device_add(qi_lb60_snd_device);
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if (ret) {
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pr_err("qi_lb60 snd: Failed to add snd soc device: %d\n", ret);
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goto err_unset_pdata;
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}
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return 0;
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err_unset_pdata:
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platform_set_drvdata(qi_lb60_snd_device, NULL);
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/*err_gpio_free_array:*/
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gpio_free_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
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err_device_put:
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platform_device_put(qi_lb60_snd_device);
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return ret;
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}
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module_init(qi_lb60_init);
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static void __exit qi_lb60_exit(void)
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{
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platform_device_unregister(qi_lb60_snd_device);
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gpio_free_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
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}
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module_exit(qi_lb60_exit);
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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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