ASoC: Zoom2: Add machine driver for Zoom2 board (df205936) · Commits · 戴 / test

sound/soc/omap/Kconfig

+7 −0

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		@@ -72,4 +72,11 @@ config SND_OMAP_SOC_OMAP3_BEAGLE
		help
		Say Y if you want to add support for SoC audio on the Beagleboard.

		config SND_OMAP_SOC_ZOOM2
		tristate "SoC Audio support for Zoom2"
		depends on TWL4030_CORE && SND_OMAP_SOC && MACH_OMAP_ZOOM2
		select SND_OMAP_SOC_MCBSP
		select SND_SOC_TWL4030
		help
		Say Y if you want to add support for Soc audio on Zoom2 board.

sound/soc/omap/Makefile

+2 −0

Original line number	Diff line number	Diff line
		@@ -14,6 +14,7 @@ snd-soc-omap3evm-objs := omap3evm.o
		snd-soc-sdp3430-objs := sdp3430.o
		snd-soc-omap3pandora-objs := omap3pandora.o
		snd-soc-omap3beagle-objs := omap3beagle.o
		snd-soc-zoom2-objs := zoom2.o

		obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o
		obj-$(CONFIG_SND_OMAP_SOC_OSK5912) += snd-soc-osk5912.o
		@@ -23,3 +24,4 @@ obj-$(CONFIG_MACH_OMAP3EVM) += snd-soc-omap3evm.o
		obj-$(CONFIG_SND_OMAP_SOC_SDP3430) += snd-soc-sdp3430.o
		obj-$(CONFIG_SND_OMAP_SOC_OMAP3_PANDORA) += snd-soc-omap3pandora.o
		obj-$(CONFIG_SND_OMAP_SOC_OMAP3_BEAGLE) += snd-soc-omap3beagle.o
		obj-$(CONFIG_SND_OMAP_SOC_ZOOM2) += snd-soc-zoom2.o

sound/soc/omap/zoom2.c

0 → 100644

+301 −0

Original line number	Diff line number	Diff line
		/*
		* zoom2.c -- SoC audio for Zoom2
		*
		* Author: Misael Lopez Cruz <x0052729@ti.com>
		*
		* 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.
		*
		* This program is distributed in the hope that it will be useful, but
		* WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
		* General Public License for more details.
		*
		* 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., 51 Franklin St, Fifth Floor, Boston, MA
		* 02110-1301 USA
		*
		*/

		#include <linux/clk.h>
		#include <linux/platform_device.h>
		#include <sound/core.h>
		#include <sound/pcm.h>
		#include <sound/soc.h>
		#include <sound/soc-dapm.h>

		#include <asm/mach-types.h>
		#include <mach/hardware.h>
		#include <mach/gpio.h>
		#include <mach/mcbsp.h>

		#include "omap-mcbsp.h"
		#include "omap-pcm.h"
		#include "../codecs/twl4030.h"

		#define ZOOM2_HEADSET_MUX_GPIO (OMAP_MAX_GPIO_LINES + 15)

		static int zoom2_hw_params(struct snd_pcm_substream *substream,
		struct snd_pcm_hw_params *params)
		{
		struct snd_soc_pcm_runtime *rtd = substream->private_data;
		struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
		struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
		int ret;

		/* Set codec DAI configuration */
		ret = snd_soc_dai_set_fmt(codec_dai,
		SND_SOC_DAIFMT_I2S \|
		SND_SOC_DAIFMT_NB_NF \|
		SND_SOC_DAIFMT_CBM_CFM);
		if (ret < 0) {
		printk(KERN_ERR "can't set codec DAI configuration\n");
		return ret;
		}

		/* Set cpu DAI configuration */
		ret = snd_soc_dai_set_fmt(cpu_dai,
		SND_SOC_DAIFMT_I2S \|
		SND_SOC_DAIFMT_NB_NF \|
		SND_SOC_DAIFMT_CBM_CFM);
		if (ret < 0) {
		printk(KERN_ERR "can't set cpu DAI configuration\n");
		return ret;
		}

		/* Set the codec system clock for DAC and ADC */
		ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
		SND_SOC_CLOCK_IN);
		if (ret < 0) {
		printk(KERN_ERR "can't set codec system clock\n");
		return ret;
		}

		return 0;
		}

		static struct snd_soc_ops zoom2_ops = {
		.hw_params = zoom2_hw_params,
		};

		static int zoom2_hw_voice_params(struct snd_pcm_substream *substream,
		struct snd_pcm_hw_params *params)
		{
		struct snd_soc_pcm_runtime *rtd = substream->private_data;
		struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
		struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
		int ret;

		/* Set codec DAI configuration */
		ret = snd_soc_dai_set_fmt(codec_dai,
		SND_SOC_DAIFMT_DSP_A \|
		SND_SOC_DAIFMT_IB_NF \|
		SND_SOC_DAIFMT_CBS_CFM);
		if (ret) {
		printk(KERN_ERR "can't set codec DAI configuration\n");
		return ret;
		}

		/* Set cpu DAI configuration */
		ret = snd_soc_dai_set_fmt(cpu_dai,
		SND_SOC_DAIFMT_DSP_A \|
		SND_SOC_DAIFMT_IB_NF \|
		SND_SOC_DAIFMT_CBM_CFM);
		if (ret < 0) {
		printk(KERN_ERR "can't set cpu DAI configuration\n");
		return ret;
		}

		/* Set the codec system clock for DAC and ADC */
		ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
		SND_SOC_CLOCK_IN);
		if (ret < 0) {
		printk(KERN_ERR "can't set codec system clock\n");
		return ret;
		}

		return 0;
		}

		static struct snd_soc_ops zoom2_voice_ops = {
		.hw_params = zoom2_hw_voice_params,
		};

		/* Zoom2 machine DAPM */
		static const struct snd_soc_dapm_widget zoom2_twl4030_dapm_widgets[] = {
		SND_SOC_DAPM_MIC("Ext Mic", NULL),
		SND_SOC_DAPM_SPK("Ext Spk", NULL),
		SND_SOC_DAPM_MIC("Headset Mic", NULL),
		SND_SOC_DAPM_HP("Headset Stereophone", NULL),
		SND_SOC_DAPM_LINE("Aux In", NULL),
		};

		static const struct snd_soc_dapm_route audio_map[] = {
		/* External Mics: MAINMIC, SUBMIC with bias*/
		{"MAINMIC", NULL, "Mic Bias 1"},
		{"SUBMIC", NULL, "Mic Bias 2"},
		{"Mic Bias 1", NULL, "Ext Mic"},
		{"Mic Bias 2", NULL, "Ext Mic"},

		/* External Speakers: HFL, HFR */
		{"Ext Spk", NULL, "HFL"},
		{"Ext Spk", NULL, "HFR"},

		/* Headset Stereophone: HSOL, HSOR */
		{"Headset Stereophone", NULL, "HSOL"},
		{"Headset Stereophone", NULL, "HSOR"},

		/* Headset Mic: HSMIC with bias */
		{"HSMIC", NULL, "Headset Mic Bias"},
		{"Headset Mic Bias", NULL, "Headset Mic"},

		/* Aux In: AUXL, AUXR */
		{"Aux In", NULL, "AUXL"},
		{"Aux In", NULL, "AUXR"},
		};

		static int zoom2_twl4030_init(struct snd_soc_codec *codec)
		{
		int ret;

		/* Add Zoom2 specific widgets */
		ret = snd_soc_dapm_new_controls(codec, zoom2_twl4030_dapm_widgets,
		ARRAY_SIZE(zoom2_twl4030_dapm_widgets));
		if (ret)
		return ret;

		/* Set up Zoom2 specific audio path audio_map */
		snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));

		/* Zoom2 connected pins */
		snd_soc_dapm_enable_pin(codec, "Ext Mic");
		snd_soc_dapm_enable_pin(codec, "Ext Spk");
		snd_soc_dapm_enable_pin(codec, "Headset Mic");
		snd_soc_dapm_enable_pin(codec, "Headset Stereophone");
		snd_soc_dapm_enable_pin(codec, "Aux In");

		/* TWL4030 not connected pins */
		snd_soc_dapm_nc_pin(codec, "CARKITMIC");
		snd_soc_dapm_nc_pin(codec, "DIGIMIC0");
		snd_soc_dapm_nc_pin(codec, "DIGIMIC1");

		snd_soc_dapm_nc_pin(codec, "OUTL");
		snd_soc_dapm_nc_pin(codec, "OUTR");
		snd_soc_dapm_nc_pin(codec, "EARPIECE");
		snd_soc_dapm_nc_pin(codec, "PREDRIVEL");
		snd_soc_dapm_nc_pin(codec, "PREDRIVER");
		snd_soc_dapm_nc_pin(codec, "CARKITL");
		snd_soc_dapm_nc_pin(codec, "CARKITR");

		ret = snd_soc_dapm_sync(codec);

		return ret;
		}

		static int zoom2_twl4030_voice_init(struct snd_soc_codec *codec)
		{
		unsigned short reg;

		/* Enable voice interface */
		reg = codec->read(codec, TWL4030_REG_VOICE_IF);
		reg \|= TWL4030_VIF_DIN_EN \| TWL4030_VIF_DOUT_EN \| TWL4030_VIF_EN;
		codec->write(codec, TWL4030_REG_VOICE_IF, reg);

		return 0;
		}

		/* Digital audio interface glue - connects codec <--> CPU */
		static struct snd_soc_dai_link zoom2_dai[] = {
		{
		.name = "TWL4030 I2S",
		.stream_name = "TWL4030 Audio",
		.cpu_dai = &omap_mcbsp_dai[0],
		.codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
		.init = zoom2_twl4030_init,
		.ops = &zoom2_ops,
		},
		{
		.name = "TWL4030 PCM",
		.stream_name = "TWL4030 Voice",
		.cpu_dai = &omap_mcbsp_dai[1],
		.codec_dai = &twl4030_dai[TWL4030_DAI_VOICE],
		.init = zoom2_twl4030_voice_init,
		.ops = &zoom2_voice_ops,
		},
		};

		/* Audio machine driver */
		static struct snd_soc_card snd_soc_zoom2 = {
		.name = "Zoom2",
		.platform = &omap_soc_platform,
		.dai_link = zoom2_dai,
		.num_links = ARRAY_SIZE(zoom2_dai),
		};

		/* twl4030 setup */
		static struct twl4030_setup_data twl4030_setup = {
		.ramp_delay_value = 2, /* 81 ms */
		.sysclk = 26000,
		};

		/* Audio subsystem */
		static struct snd_soc_device zoom2_snd_devdata = {
		.card = &snd_soc_zoom2,
		.codec_dev = &soc_codec_dev_twl4030,
		.codec_data = &twl4030_setup,
		};

		static struct platform_device *zoom2_snd_device;

		static int __init zoom2_soc_init(void)
		{
		int ret;

		if (!machine_is_omap_zoom2()) {
		pr_debug("Not Zoom2!\n");
		return -ENODEV;
		}
		printk(KERN_INFO "Zoom2 SoC init\n");

		zoom2_snd_device = platform_device_alloc("soc-audio", -1);
		if (!zoom2_snd_device) {
		printk(KERN_ERR "Platform device allocation failed\n");
		return -ENOMEM;
		}

		platform_set_drvdata(zoom2_snd_device, &zoom2_snd_devdata);
		zoom2_snd_devdata.dev = &zoom2_snd_device->dev;
		(unsigned int )zoom2_dai[0].cpu_dai->private_data = 1; /* McBSP2 */
		(unsigned int )zoom2_dai[1].cpu_dai->private_data = 2; /* McBSP3 */

		ret = platform_device_add(zoom2_snd_device);
		if (ret)
		goto err1;

		BUG_ON(gpio_request(ZOOM2_HEADSET_MUX_GPIO, "hs_mux") < 0);
		gpio_direction_output(ZOOM2_HEADSET_MUX_GPIO, 0);

		return 0;

		err1:
		printk(KERN_ERR "Unable to add platform device\n");
		platform_device_put(zoom2_snd_device);

		return ret;
		}
		module_init(zoom2_soc_init);

		static void __exit zoom2_soc_exit(void)
		{
		gpio_free(ZOOM2_HEADSET_MUX_GPIO);

		platform_device_unregister(zoom2_snd_device);
		}
		module_exit(zoom2_soc_exit);

		MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
		MODULE_DESCRIPTION("ALSA SoC Zoom2");
		MODULE_LICENSE("GPL");

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