Release 4.7 sound/soc/davinci/davinci-vcif.c
/*
* ALSA SoC Voice Codec Interface for TI DAVINCI processor
*
* Copyright (C) 2010 Texas Instruments.
*
* Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/mfd/davinci_voicecodec.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include <sound/dmaengine_pcm.h>
#include "edma-pcm.h"
#include "davinci-i2s.h"
#define MOD_REG_BIT(val, mask, set) do { \
if (set) { \
val |= mask; \
} else { \
val &= ~mask; \
} \
} while (0)
struct davinci_vcif_dev {
struct davinci_vc *davinci_vc;
struct snd_dmaengine_dai_dma_data dma_data[2];
int dma_request[2];
};
static void davinci_vcif_start(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct davinci_vcif_dev *davinci_vcif_dev =
snd_soc_dai_get_drvdata(rtd->cpu_dai);
struct davinci_vc *davinci_vc = davinci_vcif_dev->davinci_vc;
u32 w;
/* Start the sample generator and enable transmitter/receiver */
w = readl(davinci_vc->base + DAVINCI_VC_CTRL);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTDAC, 0);
else
MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTADC, 0);
writel(w, davinci_vc->base + DAVINCI_VC_CTRL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| miguel aguilar | miguel aguilar | 89 | 94.68% | 1 | 33.33% |
| liam girdwood | liam girdwood | 3 | 3.19% | 1 | 33.33% |
| sudhakar rajashekhara | sudhakar rajashekhara | 2 | 2.13% | 1 | 33.33% |
| Total | 94 | 100.00% | 3 | 100.00% |
static void davinci_vcif_stop(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct davinci_vcif_dev *davinci_vcif_dev =
snd_soc_dai_get_drvdata(rtd->cpu_dai);
struct davinci_vc *davinci_vc = davinci_vcif_dev->davinci_vc;
u32 w;
/* Reset transmitter/receiver and sample rate/frame sync generators */
w = readl(davinci_vc->base + DAVINCI_VC_CTRL);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTDAC, 1);
else
MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTADC, 1);
writel(w, davinci_vc->base + DAVINCI_VC_CTRL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| miguel aguilar | miguel aguilar | 89 | 94.68% | 1 | 33.33% |
| liam girdwood | liam girdwood | 3 | 3.19% | 1 | 33.33% |
| sudhakar rajashekhara | sudhakar rajashekhara | 2 | 2.13% | 1 | 33.33% |
| Total | 94 | 100.00% | 3 | 100.00% |
static int davinci_vcif_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct davinci_vcif_dev *davinci_vcif_dev = snd_soc_dai_get_drvdata(dai);
struct davinci_vc *davinci_vc = davinci_vcif_dev->davinci_vc;
u32 w;
/* Restart the codec before setup */
davinci_vcif_stop(substream);
davinci_vcif_start(substream);
/* General line settings */
writel(DAVINCI_VC_CTRL_MASK, davinci_vc->base + DAVINCI_VC_CTRL);
writel(DAVINCI_VC_INT_MASK, davinci_vc->base + DAVINCI_VC_INTCLR);
writel(DAVINCI_VC_INT_MASK, davinci_vc->base + DAVINCI_VC_INTEN);
w = readl(davinci_vc->base + DAVINCI_VC_CTRL);
/* Determine xfer data type */
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_U8:
MOD_REG_BIT(w, DAVINCI_VC_CTRL_RD_BITS_8 |
DAVINCI_VC_CTRL_RD_UNSIGNED |
DAVINCI_VC_CTRL_WD_BITS_8 |
DAVINCI_VC_CTRL_WD_UNSIGNED, 1);
break;
case SNDRV_PCM_FORMAT_S8:
MOD_REG_BIT(w, DAVINCI_VC_CTRL_RD_BITS_8 |
DAVINCI_VC_CTRL_WD_BITS_8, 1);
MOD_REG_BIT(w, DAVINCI_VC_CTRL_RD_UNSIGNED |
DAVINCI_VC_CTRL_WD_UNSIGNED, 0);
break;
case SNDRV_PCM_FORMAT_S16_LE:
MOD_REG_BIT(w, DAVINCI_VC_CTRL_RD_BITS_8 |
DAVINCI_VC_CTRL_RD_UNSIGNED |
DAVINCI_VC_CTRL_WD_BITS_8 |
DAVINCI_VC_CTRL_WD_UNSIGNED, 0);
break;
default:
printk(KERN_WARNING "davinci-vcif: unsupported PCM format");
return -EINVAL;
}
writel(w, davinci_vc->base + DAVINCI_VC_CTRL);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| miguel aguilar | miguel aguilar | 195 | 98.48% | 1 | 50.00% |
| liam girdwood | liam girdwood | 3 | 1.52% | 1 | 50.00% |
| Total | 198 | 100.00% | 2 | 100.00% |
static int davinci_vcif_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
int ret = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
davinci_vcif_start(substream);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
davinci_vcif_stop(substream);
break;
default:
ret = -EINVAL;
}
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| miguel aguilar | miguel aguilar | 68 | 98.55% | 1 | 50.00% |
| sudhakar rajashekhara | sudhakar rajashekhara | 1 | 1.45% | 1 | 50.00% |
| Total | 69 | 100.00% | 2 | 100.00% |
#define DAVINCI_VCIF_RATES SNDRV_PCM_RATE_8000_48000
static const struct snd_soc_dai_ops davinci_vcif_dai_ops = {
.trigger = davinci_vcif_trigger,
.hw_params = davinci_vcif_hw_params,
};
static int davinci_vcif_dai_probe(struct snd_soc_dai *dai)
{
struct davinci_vcif_dev *dev = snd_soc_dai_get_drvdata(dai);
dai->playback_dma_data = &dev->dma_data[SNDRV_PCM_STREAM_PLAYBACK];
dai->capture_dma_data = &dev->dma_data[SNDRV_PCM_STREAM_CAPTURE];
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| chris paulson-ellis | chris paulson-ellis | 27 | 56.25% | 1 | 50.00% |
| peter ujfalusi | peter ujfalusi | 21 | 43.75% | 1 | 50.00% |
| Total | 48 | 100.00% | 2 | 100.00% |
static struct snd_soc_dai_driver davinci_vcif_dai = {
.probe = davinci_vcif_dai_probe,
.playback = {
.channels_min = 1,
.channels_max = 2,
.rates = DAVINCI_VCIF_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
.capture = {
.channels_min = 1,
.channels_max = 2,
.rates = DAVINCI_VCIF_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
.ops = &davinci_vcif_dai_ops,
};
static const struct snd_soc_component_driver davinci_vcif_component = {
.name = "davinci-vcif",
};
static int davinci_vcif_probe(struct platform_device *pdev)
{
struct davinci_vc *davinci_vc = pdev->dev.platform_data;
struct davinci_vcif_dev *davinci_vcif_dev;
int ret;
davinci_vcif_dev = devm_kzalloc(&pdev->dev,
sizeof(struct davinci_vcif_dev),
GFP_KERNEL);
if (!davinci_vcif_dev) {
dev_dbg(&pdev->dev,
"could not allocate memory for private data\n");
return -ENOMEM;
}
/* DMA tx params */
davinci_vcif_dev->davinci_vc = davinci_vc;
davinci_vcif_dev->dma_data[SNDRV_PCM_STREAM_PLAYBACK].filter_data =
&davinci_vc->davinci_vcif.dma_tx_channel;
davinci_vcif_dev->dma_data[SNDRV_PCM_STREAM_PLAYBACK].addr =
davinci_vc->davinci_vcif.dma_tx_addr;
/* DMA rx params */
davinci_vcif_dev->dma_data[SNDRV_PCM_STREAM_CAPTURE].filter_data =
&davinci_vc->davinci_vcif.dma_rx_channel;
davinci_vcif_dev->dma_data[SNDRV_PCM_STREAM_CAPTURE].addr =
davinci_vc->davinci_vcif.dma_rx_addr;
dev_set_drvdata(&pdev->dev, davinci_vcif_dev);
ret = devm_snd_soc_register_component(&pdev->dev,
&davinci_vcif_component,
&davinci_vcif_dai, 1);
if (ret != 0) {
dev_err(&pdev->dev, "could not register dai\n");
return ret;
}
ret = edma_pcm_platform_register(&pdev->dev);
if (ret) {
dev_err(&pdev->dev, "register PCM failed: %d\n", ret);
return ret;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| miguel aguilar | miguel aguilar | 152 | 68.47% | 1 | 11.11% |
| hebbar gururaja | hebbar gururaja | 30 | 13.51% | 1 | 11.11% |
| peter ujfalusi | peter ujfalusi | 11 | 4.95% | 1 | 11.11% |
| julia lawall | julia lawall | 9 | 4.05% | 1 | 11.11% |
| liam girdwood | liam girdwood | 9 | 4.05% | 1 | 11.11% |
| kuninori morimoto | kuninori morimoto | 5 | 2.25% | 1 | 11.11% |
| samuel ortiz | samuel ortiz | 4 | 1.80% | 1 | 11.11% |
| vaishali thakkar | vaishali thakkar | 1 | 0.45% | 1 | 11.11% |
| vasiliy kulikov | vasiliy kulikov | 1 | 0.45% | 1 | 11.11% |
| Total | 222 | 100.00% | 9 | 100.00% |
static struct platform_driver davinci_vcif_driver = {
.probe = davinci_vcif_probe,
.driver = {
.name = "davinci-vcif",
},
};
module_platform_driver(davinci_vcif_driver);
MODULE_AUTHOR("Miguel Aguilar");
MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC Voice Codec Interface");
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| miguel aguilar | miguel aguilar | 759 | 79.89% | 1 | 7.14% |
| peter ujfalusi | peter ujfalusi | 71 | 7.47% | 1 | 7.14% |
| hebbar gururaja | hebbar gururaja | 30 | 3.16% | 1 | 7.14% |
| chris paulson-ellis | chris paulson-ellis | 27 | 2.84% | 1 | 7.14% |
| liam girdwood | liam girdwood | 21 | 2.21% | 1 | 7.14% |
| kuninori morimoto | kuninori morimoto | 18 | 1.89% | 1 | 7.14% |
| julia lawall | julia lawall | 9 | 0.95% | 1 | 7.14% |
| sudhakar rajashekhara | sudhakar rajashekhara | 5 | 0.53% | 2 | 14.29% |
| samuel ortiz | samuel ortiz | 4 | 0.42% | 1 | 7.14% |
| tejun heo | tejun heo | 3 | 0.32% | 1 | 7.14% |
| vaishali thakkar | vaishali thakkar | 1 | 0.11% | 1 | 7.14% |
| axel lin | axel lin | 1 | 0.11% | 1 | 7.14% |
| vasiliy kulikov | vasiliy kulikov | 1 | 0.11% | 1 | 7.14% |
| Total | 950 | 100.00% | 14 | 100.00% |
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