Commit fff8491c authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Mark Brown

ASoC: omap-twl4030: Simple machine driver for TI SoC with twl4030 codec

Machine driver to handle simple devices using twl4030 as audio codec.
The driver supports the following boards:
- Beagleboard or Devkit8000
- Gumstix Overo or CompuLab CM-T35/CM-T3730
- IGEP v2
- OMAP3EVM

All of these boards can be switched to use this driver since their setup is
identical.
Devicetree support for the omap-twl4030 machine driver also implemented.
Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 0d7614f0
* Texas Instruments SoC with twl4030 based audio setups
Required properties:
- compatible: "ti,omap-twl4030"
- ti,model: Name of the sound card (for example "omap3beagle")
- ti,mcbsp: phandle for the McBSP node
- ti,codec: phandle for the twl4030 audio node
Example:
sound {
compatible = "ti,omap-twl4030";
ti,model = "omap3beagle";
ti,mcbsp = <&mcbsp2>;
ti,codec = <&twl_audio>;
};
/**
* omap-twl4030.h - ASoC machine driver for TI SoC based boards with twl4030
* codec, header.
*
* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
* All rights reserved.
*
* Author: Peter Ujfalusi <peter.ujfalusi@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
*/
#ifndef _OMAP_TWL4030_H_
#define _OMAP_TWL4030_H_
struct omap_tw4030_pdata {
const char *card_name;
};
#endif /* _OMAP_TWL4030_H_ */
......@@ -95,6 +95,19 @@ config SND_OMAP_SOC_SDP3430
Say Y if you want to add support for SoC audio on Texas Instruments
SDP3430.
config SND_OMAP_SOC_OMAP_TWL4030
tristate "SoC Audio support for TI SoC based boards with twl4030 codec"
depends on TWL4030_CORE && SND_OMAP_SOC
select SND_OMAP_SOC_MCBSP
select SND_SOC_TWL4030
help
Say Y if you want to add support for SoC audio on TI SoC based boards
using twl4030 as c codec. This driver currently supports:
- Beagleboard or Devkit8000
- Gumstix Overo or CompuLab CM-T35/CM-T3730
- IGEP v2
- OMAP3EVM
config SND_OMAP_SOC_OMAP_ABE_TWL6040
tristate "SoC Audio support for OMAP boards using ABE and twl6040 codec"
depends on TWL6040_CORE && SND_OMAP_SOC && ARCH_OMAP4
......
......@@ -21,6 +21,7 @@ snd-soc-omap3evm-objs := omap3evm.o
snd-soc-am3517evm-objs := am3517evm.o
snd-soc-sdp3430-objs := sdp3430.o
snd-soc-omap-abe-twl6040-objs := omap-abe-twl6040.o
snd-soc-omap-twl4030-objs := omap-twl4030.o
snd-soc-omap3pandora-objs := omap3pandora.o
snd-soc-omap3beagle-objs := omap3beagle.o
snd-soc-zoom2-objs := zoom2.o
......@@ -37,6 +38,7 @@ obj-$(CONFIG_SND_OMAP_SOC_OMAP3EVM) += snd-soc-omap3evm.o
obj-$(CONFIG_SND_OMAP_SOC_AM3517EVM) += snd-soc-am3517evm.o
obj-$(CONFIG_SND_OMAP_SOC_SDP3430) += snd-soc-sdp3430.o
obj-$(CONFIG_SND_OMAP_SOC_OMAP_ABE_TWL6040) += snd-soc-omap-abe-twl6040.o
obj-$(CONFIG_SND_OMAP_SOC_OMAP_TWL4030) += snd-soc-omap-twl4030.o
obj-$(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
......
/*
* omap-twl4030.c -- SoC audio for TI SoC based boards with twl4030 codec
*
* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
* All rights reserved.
*
* Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
*
* This driver replaces the following machine drivers:
* omap3beagle (Author: Steve Sakoman <steve@sakoman.com>)
* omap3evm (Author: Anuj Aggarwal <anuj.aggarwal@ti.com>)
* overo (Author: Steve Sakoman <steve@sakoman.com>)
* igep0020 (Author: Enric Balletbo i Serra <eballetbo@iseebcn.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/platform_device.h>
#include <linux/platform_data/omap-twl4030.h>
#include <linux/module.h>
#include <linux/of.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include "omap-mcbsp.h"
#include "omap-pcm.h"
static int omap_twl4030_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->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_card *card = codec->card;
unsigned int fmt;
int ret;
switch (params_channels(params)) {
case 2: /* Stereo I2S mode */
fmt = SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM;
break;
case 4: /* Four channel TDM mode */
fmt = SND_SOC_DAIFMT_DSP_A |
SND_SOC_DAIFMT_IB_NF |
SND_SOC_DAIFMT_CBM_CFM;
break;
default:
return -EINVAL;
}
/* Set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai, fmt);
if (ret < 0) {
dev_err(card->dev, "can't set codec DAI configuration\n");
return ret;
}
/* Set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
if (ret < 0) {
dev_err(card->dev, "can't set cpu DAI configuration\n");
return ret;
}
return 0;
}
static struct snd_soc_ops omap_twl4030_ops = {
.hw_params = omap_twl4030_hw_params,
};
/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link omap_twl4030_dai_links[] = {
{
.name = "TWL4030",
.stream_name = "TWL4030",
.cpu_dai_name = "omap-mcbsp.2",
.codec_dai_name = "twl4030-hifi",
.platform_name = "omap-pcm-audio",
.codec_name = "twl4030-codec",
.ops = &omap_twl4030_ops,
},
};
/* Audio machine driver */
static struct snd_soc_card omap_twl4030_card = {
.owner = THIS_MODULE,
.dai_link = omap_twl4030_dai_links,
.num_links = ARRAY_SIZE(omap_twl4030_dai_links),
};
static __devinit int omap_twl4030_probe(struct platform_device *pdev)
{
struct omap_tw4030_pdata *pdata = dev_get_platdata(&pdev->dev);
struct device_node *node = pdev->dev.of_node;
struct snd_soc_card *card = &omap_twl4030_card;
int ret = 0;
card->dev = &pdev->dev;
if (node) {
struct device_node *dai_node;
if (snd_soc_of_parse_card_name(card, "ti,model")) {
dev_err(&pdev->dev, "Card name is not provided\n");
return -ENODEV;
}
dai_node = of_parse_phandle(node, "ti,mcbsp", 0);
if (!dai_node) {
dev_err(&pdev->dev, "McBSP node is not provided\n");
return -EINVAL;
}
omap_twl4030_dai_links[0].cpu_dai_name = NULL;
omap_twl4030_dai_links[0].cpu_of_node = dai_node;
} else if (pdata) {
if (pdata->card_name) {
card->name = pdata->card_name;
} else {
dev_err(&pdev->dev, "Card name is not provided\n");
return -ENODEV;
}
} else {
dev_err(&pdev->dev, "Missing pdata\n");
return -ENODEV;
}
ret = snd_soc_register_card(card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
ret);
return ret;
}
return 0;
}
static int __devexit omap_twl4030_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
snd_soc_unregister_card(card);
return 0;
}
static const struct of_device_id omap_twl4030_of_match[] = {
{.compatible = "ti,omap-twl4030", },
{ },
};
MODULE_DEVICE_TABLE(of, omap_twl4030_of_match);
static struct platform_driver omap_twl4030_driver = {
.driver = {
.name = "omap-twl4030",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
.of_match_table = omap_twl4030_of_match,
},
.probe = omap_twl4030_probe,
.remove = __devexit_p(omap_twl4030_remove),
};
module_platform_driver(omap_twl4030_driver);
MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
MODULE_DESCRIPTION("ALSA SoC for TI SoC based boards with twl4030 codec");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:omap-twl4030");
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