ASoC: JZ4740: Add qi_lb60 board driver (5898dd9e) · Commits · e / devices / android_kernel_xiaomi_sm6125

sound/soc/jz4740/Kconfig

+9 −0

Original line number	Diff line number	Diff line
		@@ -12,3 +12,12 @@ config SND_JZ4740_SOC_I2S
		help
		Say Y if you want to use I2S protocol and I2S codec on Ingenic JZ4740
		based boards.

		config SND_JZ4740_SOC_QI_LB60
		tristate "SoC Audio support for Qi LB60"
		depends on SND_JZ4740_SOC && JZ4740_QI_LB60
		select SND_JZ4740_SOC_I2S
		select SND_SOC_JZ4740_CODEC
		help
		Say Y if you want to add support for ASoC audio on the Qi LB60 board
		a.k.a Qi Ben NanoNote.

sound/soc/jz4740/Makefile

+4 −0

Original line number	Diff line number	Diff line
		@@ -7,3 +7,7 @@ snd-soc-jz4740-i2s-objs := jz4740-i2s.o
		obj-$(CONFIG_SND_JZ4740_SOC) += snd-soc-jz4740.o
		obj-$(CONFIG_SND_JZ4740_SOC_I2S) += snd-soc-jz4740-i2s.o

		# Jz4740 Machine Support
		snd-soc-qi-lb60-objs := qi_lb60.o

		obj-$(CONFIG_SND_JZ4740_SOC_QI_LB60) += snd-soc-qi-lb60.o

sound/soc/jz4740/qi_lb60.c

0 → 100644

+166 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 as
		* published by the Free Software Foundation.
		*
		* You should have received a copy of the GNU General Public License along
		* with this program; if not, write to the Free Software Foundation, Inc.,
		* 675 Mass Ave, Cambridge, MA 02139, USA.
		*
		*/

		#include <linux/module.h>
		#include <linux/moduleparam.h>
		#include <linux/timer.h>
		#include <linux/interrupt.h>
		#include <linux/platform_device.h>
		#include <sound/core.h>
		#include <sound/pcm.h>
		#include <sound/soc.h>
		#include <sound/soc-dapm.h>
		#include <linux/gpio.h>

		#include "../codecs/jz4740.h"
		#include "jz4740-pcm.h"
		#include "jz4740-i2s.h"


		#define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29)
		#define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4)

		static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
		struct snd_kcontrol *ctrl, int event)
		{
		int on = 0;
		if (event & SND_SOC_DAPM_POST_PMU)
		on = 1;
		else if (event & SND_SOC_DAPM_PRE_PMD)
		on = 0;

		gpio_set_value(QI_LB60_SND_GPIO, on);
		gpio_set_value(QI_LB60_AMP_GPIO, on);

		return 0;
		}

		static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
		SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
		SND_SOC_DAPM_MIC("Mic", NULL),
		};

		static const struct snd_soc_dapm_route qi_lb60_routes[] = {
		{"Mic", NULL, "MIC"},
		{"Speaker", NULL, "LOUT"},
		{"Speaker", NULL, "ROUT"},
		};

		#define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S \| \
		SND_SOC_DAIFMT_NB_NF \| \
		SND_SOC_DAIFMT_CBM_CFM)

		static int qi_lb60_codec_init(struct snd_soc_codec *codec)
		{
		int ret;
		struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai;

		snd_soc_dapm_nc_pin(codec, "LIN");
		snd_soc_dapm_nc_pin(codec, "RIN");

		ret = snd_soc_dai_set_fmt(cpu_dai, QI_LB60_DAIFMT);
		if (ret < 0) {
		dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
		return ret;
		}

		snd_soc_dapm_new_controls(codec, qi_lb60_widgets, ARRAY_SIZE(qi_lb60_widgets));
		snd_soc_dapm_add_routes(codec, qi_lb60_routes, ARRAY_SIZE(qi_lb60_routes));
		snd_soc_dapm_sync(codec);

		return 0;
		}

		static struct snd_soc_dai_link qi_lb60_dai = {
		.name = "jz4740",
		.stream_name = "jz4740",
		.cpu_dai = &jz4740_i2s_dai,
		.codec_dai = &jz4740_codec_dai,
		.init = qi_lb60_codec_init,
		};

		static struct snd_soc_card qi_lb60 = {
		.name = "QI LB60",
		.dai_link = &qi_lb60_dai,
		.num_links = 1,
		.platform = &jz4740_soc_platform,
		};

		static struct snd_soc_device qi_lb60_snd_devdata = {
		.card = &qi_lb60,
		.codec_dev = &soc_codec_dev_jz4740_codec,
		};

		static struct platform_device *qi_lb60_snd_device;

		static int __init qi_lb60_init(void)
		{
		int ret;

		qi_lb60_snd_device = platform_device_alloc("soc-audio", -1);

		if (!qi_lb60_snd_device)
		return -ENOMEM;

		ret = gpio_request(QI_LB60_SND_GPIO, "SND");
		if (ret) {
		pr_err("qi_lb60 snd: Failed to request SND GPIO(%d): %d\n",
		QI_LB60_SND_GPIO, ret);
		goto err_device_put;
		}

		ret = gpio_request(QI_LB60_AMP_GPIO, "AMP");
		if (ret) {
		pr_err("qi_lb60 snd: Failed to request AMP GPIO(%d): %d\n",
		QI_LB60_AMP_GPIO, ret);
		goto err_gpio_free_snd;
		}

		gpio_direction_output(QI_LB60_SND_GPIO, 0);
		gpio_direction_output(QI_LB60_AMP_GPIO, 0);

		platform_set_drvdata(qi_lb60_snd_device, &qi_lb60_snd_devdata);
		qi_lb60_snd_devdata.dev = &qi_lb60_snd_device->dev;

		ret = platform_device_add(qi_lb60_snd_device);
		if (ret) {
		pr_err("qi_lb60 snd: Failed to add snd soc device: %d\n", ret);
		goto err_unset_pdata;
		}

		return 0;

		err_unset_pdata:
		platform_set_drvdata(qi_lb60_snd_device, NULL);
		/err_gpio_free_amp:/
		gpio_free(QI_LB60_AMP_GPIO);
		err_gpio_free_snd:
		gpio_free(QI_LB60_SND_GPIO);
		err_device_put:
		platform_device_put(qi_lb60_snd_device);

		return ret;
		}
		module_init(qi_lb60_init);

		static void __exit qi_lb60_exit(void)
		{
		gpio_free(QI_LB60_AMP_GPIO);
		gpio_free(QI_LB60_SND_GPIO);
		platform_device_unregister(qi_lb60_snd_device);
		}
		module_exit(qi_lb60_exit);

		MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
		MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
		MODULE_LICENSE("GPL v2");