2010-02-22 14:09:22 -07:00
|
|
|
/*
|
|
|
|
* omap-mcpdm.c -- OMAP ALSA SoC DAI driver using McPDM port
|
|
|
|
*
|
|
|
|
* Copyright (C) 2009 Texas Instruments
|
|
|
|
*
|
|
|
|
* Author: Misael Lopez Cruz <x0052729@ti.com>
|
|
|
|
* Contact: Jorge Eduardo Candelaria <x0107209@ti.com>
|
|
|
|
* Margarita Olaya <magi.olaya@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/init.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/device.h>
|
|
|
|
#include <sound/core.h>
|
|
|
|
#include <sound/pcm.h>
|
|
|
|
#include <sound/pcm_params.h>
|
|
|
|
#include <sound/initval.h>
|
|
|
|
#include <sound/soc.h>
|
|
|
|
|
|
|
|
#include <plat/dma.h>
|
|
|
|
#include <plat/mcbsp.h>
|
|
|
|
#include "mcpdm.h"
|
|
|
|
#include "omap-pcm.h"
|
|
|
|
|
|
|
|
struct omap_mcpdm_data {
|
|
|
|
struct omap_mcpdm_link *links;
|
|
|
|
int active;
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct omap_mcpdm_link omap_mcpdm_links[] = {
|
|
|
|
/* downlink */
|
|
|
|
{
|
|
|
|
.irq_mask = MCPDM_DN_IRQ_EMPTY | MCPDM_DN_IRQ_FULL,
|
2011-08-02 04:35:30 -06:00
|
|
|
.threshold = 2,
|
2010-02-22 14:09:22 -07:00
|
|
|
.format = PDMOUTFORMAT_LJUST,
|
|
|
|
},
|
|
|
|
/* uplink */
|
|
|
|
{
|
|
|
|
.irq_mask = MCPDM_UP_IRQ_EMPTY | MCPDM_UP_IRQ_FULL,
|
2011-08-02 04:35:30 -06:00
|
|
|
.threshold = UP_THRES_MAX - 3,
|
2010-02-22 14:09:22 -07:00
|
|
|
.format = PDMOUTFORMAT_LJUST,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct omap_mcpdm_data mcpdm_data = {
|
|
|
|
.links = omap_mcpdm_links,
|
|
|
|
.active = 0,
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Stream DMA parameters
|
|
|
|
*/
|
|
|
|
static struct omap_pcm_dma_data omap_mcpdm_dai_dma_params[] = {
|
|
|
|
{
|
|
|
|
.name = "Audio playback",
|
|
|
|
.dma_req = OMAP44XX_DMA_MCPDM_DL,
|
|
|
|
.data_type = OMAP_DMA_DATA_TYPE_S32,
|
|
|
|
.sync_mode = OMAP_DMA_SYNC_PACKET,
|
|
|
|
.packet_size = 16,
|
|
|
|
.port_addr = OMAP44XX_MCPDM_L3_BASE + MCPDM_DN_DATA,
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.name = "Audio capture",
|
|
|
|
.dma_req = OMAP44XX_DMA_MCPDM_UP,
|
|
|
|
.data_type = OMAP_DMA_DATA_TYPE_S32,
|
|
|
|
.sync_mode = OMAP_DMA_SYNC_PACKET,
|
|
|
|
.packet_size = 16,
|
|
|
|
.port_addr = OMAP44XX_MCPDM_L3_BASE + MCPDM_UP_DATA,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
static int omap_mcpdm_dai_startup(struct snd_pcm_substream *substream,
|
|
|
|
struct snd_soc_dai *dai)
|
|
|
|
{
|
|
|
|
int err = 0;
|
|
|
|
|
2010-03-17 14:15:21 -06:00
|
|
|
if (!dai->active)
|
2010-02-22 14:09:22 -07:00
|
|
|
err = omap_mcpdm_request();
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void omap_mcpdm_dai_shutdown(struct snd_pcm_substream *substream,
|
|
|
|
struct snd_soc_dai *dai)
|
|
|
|
{
|
2010-03-17 14:15:21 -06:00
|
|
|
if (!dai->active)
|
2010-02-22 14:09:22 -07:00
|
|
|
omap_mcpdm_free();
|
|
|
|
}
|
|
|
|
|
|
|
|
static int omap_mcpdm_dai_trigger(struct snd_pcm_substream *substream, int cmd,
|
|
|
|
struct snd_soc_dai *dai)
|
|
|
|
{
|
2010-03-17 14:15:21 -06:00
|
|
|
struct omap_mcpdm_data *mcpdm_priv = snd_soc_dai_get_drvdata(dai);
|
2010-02-22 14:09:22 -07:00
|
|
|
int stream = substream->stream;
|
|
|
|
int err = 0;
|
|
|
|
|
|
|
|
switch (cmd) {
|
|
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
|
|
case SNDRV_PCM_TRIGGER_RESUME:
|
|
|
|
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
|
|
|
if (!mcpdm_priv->active++)
|
|
|
|
omap_mcpdm_start(stream);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
|
|
case SNDRV_PCM_TRIGGER_SUSPEND:
|
|
|
|
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
|
|
|
if (!--mcpdm_priv->active)
|
|
|
|
omap_mcpdm_stop(stream);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
err = -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int omap_mcpdm_dai_hw_params(struct snd_pcm_substream *substream,
|
|
|
|
struct snd_pcm_hw_params *params,
|
|
|
|
struct snd_soc_dai *dai)
|
|
|
|
{
|
2010-03-17 14:15:21 -06:00
|
|
|
struct omap_mcpdm_data *mcpdm_priv = snd_soc_dai_get_drvdata(dai);
|
2010-02-22 14:09:22 -07:00
|
|
|
struct omap_mcpdm_link *mcpdm_links = mcpdm_priv->links;
|
2011-08-02 04:35:30 -06:00
|
|
|
struct omap_pcm_dma_data *dma_data;
|
|
|
|
int threshold;
|
2010-02-22 14:09:22 -07:00
|
|
|
int stream = substream->stream;
|
|
|
|
int channels, err, link_mask = 0;
|
|
|
|
|
|
|
|
channels = params_channels(params);
|
|
|
|
switch (channels) {
|
|
|
|
case 4:
|
|
|
|
if (stream == SNDRV_PCM_STREAM_CAPTURE)
|
|
|
|
/* up to 2 channels for capture */
|
|
|
|
return -EINVAL;
|
|
|
|
link_mask |= 1 << 3;
|
|
|
|
case 3:
|
|
|
|
if (stream == SNDRV_PCM_STREAM_CAPTURE)
|
|
|
|
/* up to 2 channels for capture */
|
|
|
|
return -EINVAL;
|
|
|
|
link_mask |= 1 << 2;
|
|
|
|
case 2:
|
|
|
|
link_mask |= 1 << 1;
|
|
|
|
case 1:
|
|
|
|
link_mask |= 1 << 0;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
/* unsupported number of channels */
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2011-08-02 04:35:30 -06:00
|
|
|
dma_data = &omap_mcpdm_dai_dma_params[stream];
|
|
|
|
threshold = mcpdm_links[stream].threshold;
|
|
|
|
|
2010-02-22 14:09:22 -07:00
|
|
|
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
|
|
|
mcpdm_links[stream].channels = link_mask << 3;
|
2011-08-02 04:35:30 -06:00
|
|
|
dma_data->packet_size = (DN_THRES_MAX - threshold) * channels;
|
|
|
|
|
2010-02-22 14:09:22 -07:00
|
|
|
err = omap_mcpdm_playback_open(&mcpdm_links[stream]);
|
|
|
|
} else {
|
|
|
|
mcpdm_links[stream].channels = link_mask << 0;
|
2011-08-02 04:35:30 -06:00
|
|
|
dma_data->packet_size = threshold * channels;
|
|
|
|
|
2010-02-22 14:09:22 -07:00
|
|
|
err = omap_mcpdm_capture_open(&mcpdm_links[stream]);
|
|
|
|
}
|
|
|
|
|
2011-08-02 04:35:30 -06:00
|
|
|
snd_soc_dai_set_dma_data(dai, substream, dma_data);
|
2010-02-22 14:09:22 -07:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int omap_mcpdm_dai_hw_free(struct snd_pcm_substream *substream,
|
|
|
|
struct snd_soc_dai *dai)
|
|
|
|
{
|
2010-03-17 14:15:21 -06:00
|
|
|
struct omap_mcpdm_data *mcpdm_priv = snd_soc_dai_get_drvdata(dai);
|
2010-02-22 14:09:22 -07:00
|
|
|
struct omap_mcpdm_link *mcpdm_links = mcpdm_priv->links;
|
|
|
|
int stream = substream->stream;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
|
|
err = omap_mcpdm_playback_close(&mcpdm_links[stream]);
|
|
|
|
else
|
|
|
|
err = omap_mcpdm_capture_close(&mcpdm_links[stream]);
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct snd_soc_dai_ops omap_mcpdm_dai_ops = {
|
|
|
|
.startup = omap_mcpdm_dai_startup,
|
|
|
|
.shutdown = omap_mcpdm_dai_shutdown,
|
|
|
|
.trigger = omap_mcpdm_dai_trigger,
|
|
|
|
.hw_params = omap_mcpdm_dai_hw_params,
|
|
|
|
.hw_free = omap_mcpdm_dai_hw_free,
|
|
|
|
};
|
|
|
|
|
|
|
|
#define OMAP_MCPDM_RATES (SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
|
|
|
|
#define OMAP_MCPDM_FORMATS (SNDRV_PCM_FMTBIT_S32_LE)
|
|
|
|
|
2010-03-17 14:15:21 -06:00
|
|
|
static int omap_mcpdm_dai_probe(struct snd_soc_dai *dai)
|
|
|
|
{
|
|
|
|
snd_soc_dai_set_drvdata(dai, &mcpdm_data);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct snd_soc_dai_driver omap_mcpdm_dai = {
|
|
|
|
.probe = omap_mcpdm_dai_probe,
|
2010-02-22 14:09:22 -07:00
|
|
|
.playback = {
|
|
|
|
.channels_min = 1,
|
|
|
|
.channels_max = 4,
|
|
|
|
.rates = OMAP_MCPDM_RATES,
|
|
|
|
.formats = OMAP_MCPDM_FORMATS,
|
|
|
|
},
|
|
|
|
.capture = {
|
|
|
|
.channels_min = 1,
|
|
|
|
.channels_max = 2,
|
|
|
|
.rates = OMAP_MCPDM_RATES,
|
|
|
|
.formats = OMAP_MCPDM_FORMATS,
|
|
|
|
},
|
|
|
|
.ops = &omap_mcpdm_dai_ops,
|
|
|
|
};
|
2010-03-17 14:15:21 -06:00
|
|
|
|
|
|
|
static __devinit int asoc_mcpdm_probe(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = omap_mcpdm_probe(pdev);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
ret = snd_soc_register_dai(&pdev->dev, &omap_mcpdm_dai);
|
|
|
|
if (ret < 0)
|
|
|
|
omap_mcpdm_remove(pdev);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __devexit asoc_mcpdm_remove(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
snd_soc_unregister_dai(&pdev->dev);
|
|
|
|
omap_mcpdm_remove(pdev);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct platform_driver asoc_mcpdm_driver = {
|
|
|
|
.driver = {
|
2011-08-02 05:04:26 -06:00
|
|
|
.name = "omap-mcpdm",
|
2010-03-17 14:15:21 -06:00
|
|
|
.owner = THIS_MODULE,
|
|
|
|
},
|
|
|
|
|
|
|
|
.probe = asoc_mcpdm_probe,
|
|
|
|
.remove = __devexit_p(asoc_mcpdm_remove),
|
|
|
|
};
|
2010-02-22 14:09:22 -07:00
|
|
|
|
|
|
|
static int __init snd_omap_mcpdm_init(void)
|
|
|
|
{
|
2010-03-17 14:15:21 -06:00
|
|
|
return platform_driver_register(&asoc_mcpdm_driver);
|
2010-02-22 14:09:22 -07:00
|
|
|
}
|
|
|
|
module_init(snd_omap_mcpdm_init);
|
|
|
|
|
|
|
|
static void __exit snd_omap_mcpdm_exit(void)
|
|
|
|
{
|
2010-03-17 14:15:21 -06:00
|
|
|
platform_driver_unregister(&asoc_mcpdm_driver);
|
2010-02-22 14:09:22 -07:00
|
|
|
}
|
|
|
|
module_exit(snd_omap_mcpdm_exit);
|
|
|
|
|
|
|
|
MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
|
|
|
|
MODULE_DESCRIPTION("OMAP PDM SoC Interface");
|
|
|
|
MODULE_LICENSE("GPL");
|