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Commit c448303e authored by Shawn Guo's avatar Shawn Guo Committed by Mark Brown
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ASoC: fsl: add imx-sgtl5000 machine driver 



This is the initial imx-sgtl5000 machine driver support with only
playback dai link implemented.  More features can be added on top
of it later.

It's a device tree only machine driver working with fsl_ssi driver.

Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
Acked-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Acked-by: default avatarTimur Tabi <timur@freescale.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 09ce1111

Documentation/devicetree/bindings/sound/imx-audio-sgtl5000.txt

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Freescale i.MX audio complex with SGTL5000 codec



Required properties:

- compatible : "fsl,imx-audio-sgtl5000"

- model : The user-visible name of this sound complex

- ssi-controller : The phandle of the i.MX SSI controller

- audio-codec : The phandle of the SGTL5000 audio codec

- mux-int-port : The internal port of the i.MX audio muxer (AUDMUX)

- mux-ext-port : The external port of the i.MX audio muxer



Note: The AUDMUX port numbering should start at 1, which is consistent with

hardware manual.



Example:



sound {

	compatible = "fsl,imx51-babbage-sgtl5000",

		     "fsl,imx-audio-sgtl5000";

	model = "imx51-babbage-sgtl5000";

	ssi-controller = <&ssi1>;

	audio-codec = <&sgtl5000>;

	mux-int-port = <1>;

	mux-ext-port = <3>;

};

sound/soc/fsl/Kconfig

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@@ -164,4 +164,16 @@ config SND_SOC_EUKREA_TLV320 
	  Enable I2S based access to the TLV320AIC23B codec attached

	  Enable I2S based access to the TLV320AIC23B codec attached

	  to the SSI interface

	  to the SSI interface





config SND_SOC_IMX_SGTL5000

	tristate "SoC Audio support for i.MX boards with sgtl5000"

	depends on OF && I2C

	select SND_SOC_SGTL5000

	select SND_SOC_IMX_PCM_DMA

	select SND_SOC_IMX_AUDMUX

	select SND_SOC_FSL_SSI

	select SND_SOC_FSL_UTILS

	help

	  Say Y if you want to add support for SoC audio on an i.MX board with

	  a sgtl5000 codec.



endif # SND_IMX_SOC
 
endif # SND_IMX_SOC

sound/soc/fsl/Makefile

+2 −0
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@@ -40,8 +40,10 @@ snd-soc-eukrea-tlv320-objs := eukrea-tlv320.o 
snd-soc-phycore-ac97-objs := phycore-ac97.o

snd-soc-phycore-ac97-objs := phycore-ac97.o

snd-soc-mx27vis-aic32x4-objs := mx27vis-aic32x4.o

snd-soc-mx27vis-aic32x4-objs := mx27vis-aic32x4.o

snd-soc-wm1133-ev1-objs := wm1133-ev1.o

snd-soc-wm1133-ev1-objs := wm1133-ev1.o

snd-soc-imx-sgtl5000-objs := imx-sgtl5000.o





obj-$(CONFIG_SND_SOC_EUKREA_TLV320) += snd-soc-eukrea-tlv320.o

obj-$(CONFIG_SND_SOC_EUKREA_TLV320) += snd-soc-eukrea-tlv320.o

obj-$(CONFIG_SND_SOC_PHYCORE_AC97) += snd-soc-phycore-ac97.o

obj-$(CONFIG_SND_SOC_PHYCORE_AC97) += snd-soc-phycore-ac97.o

obj-$(CONFIG_SND_SOC_MX27VIS_AIC32X4) += snd-soc-mx27vis-aic32x4.o

obj-$(CONFIG_SND_SOC_MX27VIS_AIC32X4) += snd-soc-mx27vis-aic32x4.o

obj-$(CONFIG_SND_MXC_SOC_WM1133_EV1) += snd-soc-wm1133-ev1.o

obj-$(CONFIG_SND_MXC_SOC_WM1133_EV1) += snd-soc-wm1133-ev1.o

obj-$(CONFIG_SND_SOC_IMX_SGTL5000) += snd-soc-imx-sgtl5000.o

sound/soc/fsl/imx-sgtl5000.c

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/*

 * Copyright 2012 Freescale Semiconductor, Inc.

 * Copyright 2012 Linaro Ltd.

 *

 * The code contained herein is licensed under the GNU General Public

 * License. You may obtain a copy of the GNU General Public License

 * Version 2 or later at the following locations:

 *

 * http://www.opensource.org/licenses/gpl-license.html

 * http://www.gnu.org/copyleft/gpl.html

 */



#include <linux/module.h>

#include <linux/of.h>

#include <linux/of_platform.h>

#include <sound/soc.h>



#include "../codecs/sgtl5000.h"

#include "imx-audmux.h"



#define DAI_NAME_SIZE	32



struct imx_sgtl5000_data {

	struct snd_soc_dai_link dai;

	struct snd_soc_card card;

	char codec_dai_name[DAI_NAME_SIZE];

	char platform_name[DAI_NAME_SIZE];

	unsigned int clk_frequency;

};



static int imx_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd)

{

	struct imx_sgtl5000_data *data = container_of(rtd->card,

					struct imx_sgtl5000_data, card);

	struct device *dev = rtd->card->dev;

	int ret;



	ret = snd_soc_dai_set_sysclk(rtd->codec_dai, SGTL5000_SYSCLK,

				     data->clk_frequency, SND_SOC_CLOCK_IN);

	if (ret) {

		dev_err(dev, "could not set codec driver clock params\n");

		return ret;

	}



	return 0;

}



static int __devinit imx_sgtl5000_probe(struct platform_device *pdev)

{

	struct device_node *np = pdev->dev.of_node;

	struct device_node *ssi_np, *codec_np;

	struct platform_device *ssi_pdev;

	struct imx_sgtl5000_data *data;

	int int_port, ext_port;

	int ret;



	ret = of_property_read_u32(np, "mux-int-port", &int_port);

	if (ret) {

		dev_err(&pdev->dev, "mux-int-port missing or invalid\n");

		return ret;

	}

	ret = of_property_read_u32(np, "mux-ext-port", &ext_port);

	if (ret) {

		dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");

		return ret;

	}



	/*

	 * The port numbering in the hardware manual starts at 1, while

	 * the audmux API expects it starts at 0.

	 */

	int_port--;

	ext_port--;

	ret = imx_audmux_v2_configure_port(int_port,

			IMX_AUDMUX_V2_PTCR_SYN |

			IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |

			IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |

			IMX_AUDMUX_V2_PTCR_TFSDIR |

			IMX_AUDMUX_V2_PTCR_TCLKDIR,

			IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));

	if (ret) {

		dev_err(&pdev->dev, "audmux internal port setup failed\n");

		return ret;

	}

	imx_audmux_v2_configure_port(ext_port,

			IMX_AUDMUX_V2_PTCR_SYN |

			IMX_AUDMUX_V2_PTCR_TCSEL(int_port),

			IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));

	if (ret) {

		dev_err(&pdev->dev, "audmux external port setup failed\n");

		return ret;

	}



	ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);

	codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);

	if (!ssi_np || !codec_np) {

		dev_err(&pdev->dev, "phandle missing or invalid\n");

		return -EINVAL;

	}



	ssi_pdev = of_find_device_by_node(ssi_np);

	if (!ssi_pdev) {

		dev_err(&pdev->dev, "failed to find SSI platform device\n");

		return -EINVAL;

	}



	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);

	if (!data)

		return -ENOMEM;



	ret = of_property_read_u32(codec_np, "clock-frequency",

				   &data->clk_frequency);

	if (ret) {

		dev_err(&pdev->dev, "clock-frequency missing or invalid\n");

		return ret;

	}



	data->dai.name = "HiFi";

	data->dai.stream_name = "HiFi";

	data->dai.codec_dai_name = "sgtl5000";

	data->dai.codec_of_node = codec_np;

	data->dai.cpu_dai_name = dev_name(&ssi_pdev->dev);

	data->dai.platform_name = "imx-pcm-audio";

	data->dai.init = &imx_sgtl5000_dai_init;

	data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |

			    SND_SOC_DAIFMT_CBM_CFM;



	data->card.dev = &pdev->dev;

	ret = snd_soc_of_parse_card_name(&data->card, "model");

	if (ret)

		return ret;

	data->card.num_links = 1;

	data->card.dai_link = &data->dai;



	ret = snd_soc_register_card(&data->card);

	if (ret) {

		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);

		return ret;

	}



	platform_set_drvdata(pdev, data);

	of_node_put(ssi_np);

	of_node_put(codec_np);



	return 0;

}



static int __devexit imx_sgtl5000_remove(struct platform_device *pdev)

{

	struct imx_sgtl5000_data *data = platform_get_drvdata(pdev);



	snd_soc_unregister_card(&data->card);



	return 0;

}



static const struct of_device_id imx_sgtl5000_dt_ids[] = {

	{ .compatible = "fsl,imx-audio-sgtl5000", },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids);



static struct platform_driver imx_sgtl5000_driver = {

	.driver = {

		.name = "imx-sgtl5000",

		.owner = THIS_MODULE,

		.of_match_table = imx_sgtl5000_dt_ids,

	},

	.probe = imx_sgtl5000_probe,

	.remove = __devexit_p(imx_sgtl5000_remove),

};

module_platform_driver(imx_sgtl5000_driver);



MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");

MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver");

MODULE_LICENSE("GPL v2");

MODULE_ALIAS("platform:imx-sgtl5000");