forked from Minki/linux
Merge branch 'for-2.6.37' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/asoc-2.6 into for-2.6.37
This commit is contained in:
Mark Brown
commit
bf557a50f5
525
sound/soc/codecs/wl1273.c
Normal file
525
sound/soc/codecs/wl1273.c
Normal file
|
|
@ -0,0 +1,525 @@
|
|||
/*
|
||||
* ALSA SoC WL1273 codec driver
|
||||
*
|
||||
* Author: Matti Aaltonen, <matti.j.aaltonen@nokia.com>
|
||||
*
|
||||
* Copyright: (C) 2010 Nokia Corporation
|
||||
*
|
||||
* 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/mfd/wl1273-core.h>
|
||||
#include <linux/slab.h>
|
||||
#include <sound/pcm.h>
|
||||
#include <sound/pcm_params.h>
|
||||
#include <sound/soc-dai.h>
|
||||
#include <sound/soc-dapm.h>
|
||||
#include <sound/initval.h>
|
||||
|
||||
#include "wl1273.h"
|
||||
|
||||
enum wl1273_mode { WL1273_MODE_BT, WL1273_MODE_FM_RX, WL1273_MODE_FM_TX };
|
||||
|
||||
/* codec private data */
|
||||
struct wl1273_priv {
|
||||
enum wl1273_mode mode;
|
||||
struct wl1273_core *core;
|
||||
unsigned int channels;
|
||||
};
|
||||
|
||||
static int snd_wl1273_fm_set_i2s_mode(struct wl1273_core *core,
|
||||
int rate, int width)
|
||||
{
|
||||
struct device *dev = &core->i2c_dev->dev;
|
||||
int r = 0;
|
||||
u16 mode;
|
||||
|
||||
dev_dbg(dev, "rate: %d\n", rate);
|
||||
dev_dbg(dev, "width: %d\n", width);
|
||||
|
||||
mutex_lock(&core->lock);
|
||||
|
||||
mode = core->i2s_mode & ~WL1273_IS2_WIDTH & ~WL1273_IS2_RATE;
|
||||
|
||||
switch (rate) {
|
||||
case 48000:
|
||||
mode |= WL1273_IS2_RATE_48K;
|
||||
break;
|
||||
case 44100:
|
||||
mode |= WL1273_IS2_RATE_44_1K;
|
||||
break;
|
||||
case 32000:
|
||||
mode |= WL1273_IS2_RATE_32K;
|
||||
break;
|
||||
case 22050:
|
||||
mode |= WL1273_IS2_RATE_22_05K;
|
||||
break;
|
||||
case 16000:
|
||||
mode |= WL1273_IS2_RATE_16K;
|
||||
break;
|
||||
case 12000:
|
||||
mode |= WL1273_IS2_RATE_12K;
|
||||
break;
|
||||
case 11025:
|
||||
mode |= WL1273_IS2_RATE_11_025;
|
||||
break;
|
||||
case 8000:
|
||||
mode |= WL1273_IS2_RATE_8K;
|
||||
break;
|
||||
default:
|
||||
dev_err(dev, "Sampling rate: %d not supported\n", rate);
|
||||
r = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
|
||||
switch (width) {
|
||||
case 16:
|
||||
mode |= WL1273_IS2_WIDTH_32;
|
||||
break;
|
||||
case 20:
|
||||
mode |= WL1273_IS2_WIDTH_40;
|
||||
break;
|
||||
case 24:
|
||||
mode |= WL1273_IS2_WIDTH_48;
|
||||
break;
|
||||
case 25:
|
||||
mode |= WL1273_IS2_WIDTH_50;
|
||||
break;
|
||||
case 30:
|
||||
mode |= WL1273_IS2_WIDTH_60;
|
||||
break;
|
||||
case 32:
|
||||
mode |= WL1273_IS2_WIDTH_64;
|
||||
break;
|
||||
case 40:
|
||||
mode |= WL1273_IS2_WIDTH_80;
|
||||
break;
|
||||
case 48:
|
||||
mode |= WL1273_IS2_WIDTH_96;
|
||||
break;
|
||||
case 64:
|
||||
mode |= WL1273_IS2_WIDTH_128;
|
||||
break;
|
||||
default:
|
||||
dev_err(dev, "Data width: %d not supported\n", width);
|
||||
r = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
|
||||
dev_dbg(dev, "WL1273_I2S_DEF_MODE: 0x%04x\n", WL1273_I2S_DEF_MODE);
|
||||
dev_dbg(dev, "core->i2s_mode: 0x%04x\n", core->i2s_mode);
|
||||
dev_dbg(dev, "mode: 0x%04x\n", mode);
|
||||
|
||||
if (core->i2s_mode != mode) {
|
||||
r = wl1273_fm_write_cmd(core, WL1273_I2S_MODE_CONFIG_SET, mode);
|
||||
if (r)
|
||||
goto out;
|
||||
|
||||
core->i2s_mode = mode;
|
||||
r = wl1273_fm_write_cmd(core, WL1273_AUDIO_ENABLE,
|
||||
WL1273_AUDIO_ENABLE_I2S);
|
||||
if (r)
|
||||
goto out;
|
||||
}
|
||||
out:
|
||||
mutex_unlock(&core->lock);
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
static int snd_wl1273_fm_set_channel_number(struct wl1273_core *core,
|
||||
int channel_number)
|
||||
{
|
||||
struct i2c_client *client = core->i2c_dev;
|
||||
struct device *dev = &client->dev;
|
||||
int r = 0;
|
||||
|
||||
dev_dbg(dev, "%s\n", __func__);
|
||||
|
||||
mutex_lock(&core->lock);
|
||||
|
||||
if (core->channel_number == channel_number)
|
||||
goto out;
|
||||
|
||||
if (channel_number == 1 && core->mode == WL1273_MODE_RX)
|
||||
r = wl1273_fm_write_cmd(core, WL1273_MOST_MODE_SET,
|
||||
WL1273_RX_MONO);
|
||||
else if (channel_number == 1 && core->mode == WL1273_MODE_TX)
|
||||
r = wl1273_fm_write_cmd(core, WL1273_MONO_SET,
|
||||
WL1273_TX_MONO);
|
||||
else if (channel_number == 2 && core->mode == WL1273_MODE_RX)
|
||||
r = wl1273_fm_write_cmd(core, WL1273_MOST_MODE_SET,
|
||||
WL1273_RX_STEREO);
|
||||
else if (channel_number == 2 && core->mode == WL1273_MODE_TX)
|
||||
r = wl1273_fm_write_cmd(core, WL1273_MONO_SET,
|
||||
WL1273_TX_STEREO);
|
||||
else
|
||||
r = -EINVAL;
|
||||
out:
|
||||
mutex_unlock(&core->lock);
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
static int snd_wl1273_get_audio_route(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_value *ucontrol)
|
||||
{
|
||||
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
||||
struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
|
||||
|
||||
ucontrol->value.integer.value[0] = wl1273->mode;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const char *wl1273_audio_route[] = { "Bt", "FmRx", "FmTx" };
|
||||
|
||||
static int snd_wl1273_set_audio_route(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_value *ucontrol)
|
||||
{
|
||||
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
||||
struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
|
||||
|
||||
/* Do not allow changes while stream is running */
|
||||
if (codec->active)
|
||||
return -EPERM;
|
||||
|
||||
if (ucontrol->value.integer.value[0] < 0 ||
|
||||
ucontrol->value.integer.value[0] >= ARRAY_SIZE(wl1273_audio_route))
|
||||
return -EINVAL;
|
||||
|
||||
wl1273->mode = ucontrol->value.integer.value[0];
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static const struct soc_enum wl1273_enum =
|
||||
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(wl1273_audio_route), wl1273_audio_route);
|
||||
|
||||
static int snd_wl1273_fm_audio_get(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_value *ucontrol)
|
||||
{
|
||||
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
||||
struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
|
||||
|
||||
dev_dbg(codec->dev, "%s: enter.\n", __func__);
|
||||
|
||||
ucontrol->value.integer.value[0] = wl1273->core->audio_mode;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_wl1273_fm_audio_put(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_value *ucontrol)
|
||||
{
|
||||
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
||||
struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
|
||||
int val, r = 0;
|
||||
|
||||
dev_dbg(codec->dev, "%s: enter.\n", __func__);
|
||||
|
||||
val = ucontrol->value.integer.value[0];
|
||||
if (wl1273->core->audio_mode == val)
|
||||
return 0;
|
||||
|
||||
r = wl1273_fm_set_audio(wl1273->core, val);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static const char *wl1273_audio_strings[] = { "Digital", "Analog" };
|
||||
|
||||
static const struct soc_enum wl1273_audio_enum =
|
||||
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(wl1273_audio_strings),
|
||||
wl1273_audio_strings);
|
||||
|
||||
static int snd_wl1273_fm_volume_get(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_value *ucontrol)
|
||||
{
|
||||
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
||||
struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
|
||||
|
||||
dev_dbg(codec->dev, "%s: enter.\n", __func__);
|
||||
|
||||
ucontrol->value.integer.value[0] = wl1273->core->volume;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_wl1273_fm_volume_put(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_value *ucontrol)
|
||||
{
|
||||
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
||||
struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
|
||||
int r;
|
||||
|
||||
dev_dbg(codec->dev, "%s: enter.\n", __func__);
|
||||
|
||||
r = wl1273_fm_set_volume(wl1273->core,
|
||||
ucontrol->value.integer.value[0]);
|
||||
if (r)
|
||||
return r;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static const struct snd_kcontrol_new wl1273_controls[] = {
|
||||
SOC_ENUM_EXT("Codec Mode", wl1273_enum,
|
||||
snd_wl1273_get_audio_route, snd_wl1273_set_audio_route),
|
||||
SOC_ENUM_EXT("Audio Switch", wl1273_audio_enum,
|
||||
snd_wl1273_fm_audio_get, snd_wl1273_fm_audio_put),
|
||||
SOC_SINGLE_EXT("Volume", 0, 0, WL1273_MAX_VOLUME, 0,
|
||||
snd_wl1273_fm_volume_get, snd_wl1273_fm_volume_put),
|
||||
};
|
||||
|
||||
static int wl1273_startup(struct snd_pcm_substream *substream,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
||||
struct snd_soc_codec *codec = rtd->codec;
|
||||
struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
|
||||
|
||||
switch (wl1273->mode) {
|
||||
case WL1273_MODE_BT:
|
||||
snd_pcm_hw_constraint_minmax(substream->runtime,
|
||||
SNDRV_PCM_HW_PARAM_RATE,
|
||||
8000, 8000);
|
||||
snd_pcm_hw_constraint_minmax(substream->runtime,
|
||||
SNDRV_PCM_HW_PARAM_CHANNELS, 1, 1);
|
||||
break;
|
||||
case WL1273_MODE_FM_RX:
|
||||
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
||||
pr_err("Cannot play in RX mode.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
break;
|
||||
case WL1273_MODE_FM_TX:
|
||||
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
|
||||
pr_err("Cannot capture in TX mode.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
break;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int wl1273_hw_params(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *params,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
||||
struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(rtd->codec);
|
||||
struct wl1273_core *core = wl1273->core;
|
||||
unsigned int rate, width, r;
|
||||
|
||||
if (params_format(params) != SNDRV_PCM_FORMAT_S16_LE) {
|
||||
pr_err("Only SNDRV_PCM_FORMAT_S16_LE supported.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
rate = params_rate(params);
|
||||
width = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min;
|
||||
|
||||
if (wl1273->mode == WL1273_MODE_BT) {
|
||||
if (rate != 8000) {
|
||||
pr_err("Rate %d not supported.\n", params_rate(params));
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (params_channels(params) != 1) {
|
||||
pr_err("Only mono supported.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (wl1273->mode == WL1273_MODE_FM_TX &&
|
||||
substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
|
||||
pr_err("Only playback supported with TX.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (wl1273->mode == WL1273_MODE_FM_RX &&
|
||||
substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
||||
pr_err("Only capture supported with RX.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (wl1273->mode != WL1273_MODE_FM_RX &&
|
||||
wl1273->mode != WL1273_MODE_FM_TX) {
|
||||
pr_err("Unexpected mode: %d.\n", wl1273->mode);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
r = snd_wl1273_fm_set_i2s_mode(core, rate, width);
|
||||
if (r)
|
||||
return r;
|
||||
|
||||
wl1273->channels = params_channels(params);
|
||||
r = snd_wl1273_fm_set_channel_number(core, wl1273->channels);
|
||||
if (r)
|
||||
return r;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct snd_soc_dai_ops wl1273_dai_ops = {
|
||||
.startup = wl1273_startup,
|
||||
.hw_params = wl1273_hw_params,
|
||||
};
|
||||
|
||||
static struct snd_soc_dai_driver wl1273_dai = {
|
||||
.name = "wl1273-fm",
|
||||
.playback = {
|
||||
.stream_name = "Playback",
|
||||
.channels_min = 1,
|
||||
.channels_max = 2,
|
||||
.rates = SNDRV_PCM_RATE_8000_48000,
|
||||
.formats = SNDRV_PCM_FMTBIT_S16_LE},
|
||||
.capture = {
|
||||
.stream_name = "Capture",
|
||||
.channels_min = 1,
|
||||
.channels_max = 2,
|
||||
.rates = SNDRV_PCM_RATE_8000_48000,
|
||||
.formats = SNDRV_PCM_FMTBIT_S16_LE},
|
||||
.ops = &wl1273_dai_ops,
|
||||
};
|
||||
|
||||
/* Audio interface format for the soc_card driver */
|
||||
int wl1273_get_format(struct snd_soc_codec *codec, unsigned int *fmt)
|
||||
{
|
||||
struct wl1273_priv *wl1273;
|
||||
|
||||
if (codec == NULL || fmt == NULL)
|
||||
return -EINVAL;
|
||||
|
||||
wl1273 = snd_soc_codec_get_drvdata(codec);
|
||||
|
||||
switch (wl1273->mode) {
|
||||
case WL1273_MODE_FM_RX:
|
||||
case WL1273_MODE_FM_TX:
|
||||
*fmt = SND_SOC_DAIFMT_I2S |
|
||||
SND_SOC_DAIFMT_NB_NF |
|
||||
SND_SOC_DAIFMT_CBM_CFM;
|
||||
|
||||
break;
|
||||
case WL1273_MODE_BT:
|
||||
*fmt = SND_SOC_DAIFMT_DSP_A |
|
||||
SND_SOC_DAIFMT_IB_NF |
|
||||
SND_SOC_DAIFMT_CBM_CFM;
|
||||
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(wl1273_get_format);
|
||||
|
||||
static int wl1273_probe(struct snd_soc_codec *codec)
|
||||
{
|
||||
struct wl1273_core **core = codec->dev->platform_data;
|
||||
struct wl1273_priv *wl1273;
|
||||
int r;
|
||||
|
||||
dev_dbg(codec->dev, "%s.\n", __func__);
|
||||
|
||||
if (!core) {
|
||||
dev_err(codec->dev, "Platform data is missing.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
wl1273 = kzalloc(sizeof(struct wl1273_priv), GFP_KERNEL);
|
||||
if (wl1273 == NULL) {
|
||||
dev_err(codec->dev, "Cannot allocate memory.\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
wl1273->mode = WL1273_MODE_BT;
|
||||
wl1273->core = *core;
|
||||
|
||||
snd_soc_codec_set_drvdata(codec, wl1273);
|
||||
mutex_init(&codec->mutex);
|
||||
|
||||
r = snd_soc_add_controls(codec, wl1273_controls,
|
||||
ARRAY_SIZE(wl1273_controls));
|
||||
if (r)
|
||||
kfree(wl1273);
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
static int wl1273_remove(struct snd_soc_codec *codec)
|
||||
{
|
||||
struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
|
||||
|
||||
dev_dbg(codec->dev, "%s\n", __func__);
|
||||
kfree(wl1273);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct snd_soc_codec_driver soc_codec_dev_wl1273 = {
|
||||
.probe = wl1273_probe,
|
||||
.remove = wl1273_remove,
|
||||
};
|
||||
|
||||
static int __devinit wl1273_platform_probe(struct platform_device *pdev)
|
||||
{
|
||||
return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_wl1273,
|
||||
&wl1273_dai, 1);
|
||||
}
|
||||
|
||||
static int __devexit wl1273_platform_remove(struct platform_device *pdev)
|
||||
{
|
||||
snd_soc_unregister_codec(&pdev->dev);
|
||||
return 0;
|
||||
}
|
||||
|
||||
MODULE_ALIAS("platform:wl1273-codec");
|
||||
|
||||
static struct platform_driver wl1273_platform_driver = {
|
||||
.driver = {
|
||||
.name = "wl1273-codec",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = wl1273_platform_probe,
|
||||
.remove = __devexit_p(wl1273_platform_remove),
|
||||
};
|
||||
|
||||
static int __init wl1273_init(void)
|
||||
{
|
||||
return platform_driver_register(&wl1273_platform_driver);
|
||||
}
|
||||
module_init(wl1273_init);
|
||||
|
||||
static void __exit wl1273_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&wl1273_platform_driver);
|
||||
}
|
||||
module_exit(wl1273_exit);
|
||||
|
||||
MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
|
||||
MODULE_DESCRIPTION("ASoC WL1273 codec driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
101
sound/soc/codecs/wl1273.h
Normal file
101
sound/soc/codecs/wl1273.h
Normal file
|
|
@ -0,0 +1,101 @@
|
|||
/*
|
||||
* sound/soc/codec/wl1273.h
|
||||
*
|
||||
* ALSA SoC WL1273 codec driver
|
||||
*
|
||||
* Copyright (C) Nokia Corporation
|
||||
* Author: Matti Aaltonen <matti.j.aaltonen@nokia.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 __WL1273_CODEC_H__
|
||||
#define __WL1273_CODEC_H__
|
||||
|
||||
/* I2S protocol, left channel first, data width 16 bits */
|
||||
#define WL1273_PCM_DEF_MODE 0x00
|
||||
|
||||
/* Rx */
|
||||
#define WL1273_AUDIO_ENABLE_I2S (1 << 0)
|
||||
#define WL1273_AUDIO_ENABLE_ANALOG (1 << 1)
|
||||
|
||||
/* Tx */
|
||||
#define WL1273_AUDIO_IO_SET_ANALOG 0
|
||||
#define WL1273_AUDIO_IO_SET_I2S 1
|
||||
|
||||
#define WL1273_POWER_SET_OFF 0
|
||||
#define WL1273_POWER_SET_FM (1 << 0)
|
||||
#define WL1273_POWER_SET_RDS (1 << 1)
|
||||
#define WL1273_POWER_SET_RETENTION (1 << 4)
|
||||
|
||||
#define WL1273_PUPD_SET_OFF 0x00
|
||||
#define WL1273_PUPD_SET_ON 0x01
|
||||
#define WL1273_PUPD_SET_RETENTION 0x10
|
||||
|
||||
/* I2S mode */
|
||||
#define WL1273_IS2_WIDTH_32 0x0
|
||||
#define WL1273_IS2_WIDTH_40 0x1
|
||||
#define WL1273_IS2_WIDTH_22_23 0x2
|
||||
#define WL1273_IS2_WIDTH_23_22 0x3
|
||||
#define WL1273_IS2_WIDTH_48 0x4
|
||||
#define WL1273_IS2_WIDTH_50 0x5
|
||||
#define WL1273_IS2_WIDTH_60 0x6
|
||||
#define WL1273_IS2_WIDTH_64 0x7
|
||||
#define WL1273_IS2_WIDTH_80 0x8
|
||||
#define WL1273_IS2_WIDTH_96 0x9
|
||||
#define WL1273_IS2_WIDTH_128 0xa
|
||||
#define WL1273_IS2_WIDTH 0xf
|
||||
|
||||
#define WL1273_IS2_FORMAT_STD (0x0 << 4)
|
||||
#define WL1273_IS2_FORMAT_LEFT (0x1 << 4)
|
||||
#define WL1273_IS2_FORMAT_RIGHT (0x2 << 4)
|
||||
#define WL1273_IS2_FORMAT_USER (0x3 << 4)
|
||||
|
||||
#define WL1273_IS2_MASTER (0x0 << 6)
|
||||
#define WL1273_IS2_SLAVEW (0x1 << 6)
|
||||
|
||||
#define WL1273_IS2_TRI_AFTER_SENDING (0x0 << 7)
|
||||
#define WL1273_IS2_TRI_ALWAYS_ACTIVE (0x1 << 7)
|
||||
|
||||
#define WL1273_IS2_SDOWS_RR (0x0 << 8)
|
||||
#define WL1273_IS2_SDOWS_RF (0x1 << 8)
|
||||
#define WL1273_IS2_SDOWS_FR (0x2 << 8)
|
||||
#define WL1273_IS2_SDOWS_FF (0x3 << 8)
|
||||
|
||||
#define WL1273_IS2_TRI_OPT (0x0 << 10)
|
||||
#define WL1273_IS2_TRI_ALWAYS (0x1 << 10)
|
||||
|
||||
#define WL1273_IS2_RATE_48K (0x0 << 12)
|
||||
#define WL1273_IS2_RATE_44_1K (0x1 << 12)
|
||||
#define WL1273_IS2_RATE_32K (0x2 << 12)
|
||||
#define WL1273_IS2_RATE_22_05K (0x4 << 12)
|
||||
#define WL1273_IS2_RATE_16K (0x5 << 12)
|
||||
#define WL1273_IS2_RATE_12K (0x8 << 12)
|
||||
#define WL1273_IS2_RATE_11_025 (0x9 << 12)
|
||||
#define WL1273_IS2_RATE_8K (0xa << 12)
|
||||
#define WL1273_IS2_RATE (0xf << 12)
|
||||
|
||||
#define WL1273_I2S_DEF_MODE (WL1273_IS2_WIDTH_32 | \
|
||||
WL1273_IS2_FORMAT_STD | \
|
||||
WL1273_IS2_MASTER | \
|
||||
WL1273_IS2_TRI_AFTER_SENDING | \
|
||||
WL1273_IS2_SDOWS_RR | \
|
||||
WL1273_IS2_TRI_OPT | \
|
||||
WL1273_IS2_RATE_48K)
|
||||
|
||||
int wl1273_get_format(struct snd_soc_codec *codec, unsigned int *fmt);
|
||||
|
||||
#endif /* End of __WL1273_CODEC_H__ */
|
||||
|
|
@ -60,6 +60,7 @@ struct dma_object {
|
|||
struct snd_soc_platform_driver dai;
|
||||
dma_addr_t ssi_stx_phys;
|
||||
dma_addr_t ssi_srx_phys;
|
||||
unsigned int ssi_fifo_depth;
|
||||
struct ccsr_dma_channel __iomem *channel;
|
||||
unsigned int irq;
|
||||
bool assigned;
|
||||
|
|
@ -99,6 +100,7 @@ struct fsl_dma_private {
|
|||
unsigned int irq;
|
||||
struct snd_pcm_substream *substream;
|
||||
dma_addr_t ssi_sxx_phys;
|
||||
unsigned int ssi_fifo_depth;
|
||||
dma_addr_t ld_buf_phys;
|
||||
unsigned int current_link;
|
||||
dma_addr_t dma_buf_phys;
|
||||
|
|
@ -439,6 +441,7 @@ static int fsl_dma_open(struct snd_pcm_substream *substream)
|
|||
else
|
||||
dma_private->ssi_sxx_phys = dma->ssi_srx_phys;
|
||||
|
||||
dma_private->ssi_fifo_depth = dma->ssi_fifo_depth;
|
||||
dma_private->dma_channel = dma->channel;
|
||||
dma_private->irq = dma->irq;
|
||||
dma_private->substream = substream;
|
||||
|
|
@ -552,11 +555,11 @@ static int fsl_dma_hw_params(struct snd_pcm_substream *substream,
|
|||
struct device *dev = rtd->platform->dev;
|
||||
|
||||
/* Number of bits per sample */
|
||||
unsigned int sample_size =
|
||||
unsigned int sample_bits =
|
||||
snd_pcm_format_physical_width(params_format(hw_params));
|
||||
|
||||
/* Number of bytes per frame */
|
||||
unsigned int frame_size = 2 * (sample_size / 8);
|
||||
unsigned int sample_bytes = sample_bits / 8;
|
||||
|
||||
/* Bus address of SSI STX register */
|
||||
dma_addr_t ssi_sxx_phys = dma_private->ssi_sxx_phys;
|
||||
|
|
@ -596,7 +599,7 @@ static int fsl_dma_hw_params(struct snd_pcm_substream *substream,
|
|||
* that offset here. While we're at it, also tell the DMA controller
|
||||
* how much data to transfer per sample.
|
||||
*/
|
||||
switch (sample_size) {
|
||||
switch (sample_bits) {
|
||||
case 8:
|
||||
mr |= CCSR_DMA_MR_DAHTS_1 | CCSR_DMA_MR_SAHTS_1;
|
||||
ssi_sxx_phys += 3;
|
||||
|
|
@ -610,22 +613,42 @@ static int fsl_dma_hw_params(struct snd_pcm_substream *substream,
|
|||
break;
|
||||
default:
|
||||
/* We should never get here */
|
||||
dev_err(dev, "unsupported sample size %u\n", sample_size);
|
||||
dev_err(dev, "unsupported sample size %u\n", sample_bits);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/*
|
||||
* BWC should always be a multiple of the frame size. BWC determines
|
||||
* how many bytes are sent/received before the DMA controller checks the
|
||||
* SSI to see if it needs to stop. For playback, the transmit FIFO can
|
||||
* hold three frames, so we want to send two frames at a time. For
|
||||
* capture, the receive FIFO is triggered when it contains one frame, so
|
||||
* we want to receive one frame at a time.
|
||||
* BWC determines how many bytes are sent/received before the DMA
|
||||
* controller checks the SSI to see if it needs to stop. BWC should
|
||||
* always be a multiple of the frame size, so that we always transmit
|
||||
* whole frames. Each frame occupies two slots in the FIFO. The
|
||||
* parameter for CCSR_DMA_MR_BWC() is rounded down the next power of two
|
||||
* (MR[BWC] can only represent even powers of two).
|
||||
*
|
||||
* To simplify the process, we set BWC to the largest value that is
|
||||
* less than or equal to the FIFO watermark. For playback, this ensures
|
||||
* that we transfer the maximum amount without overrunning the FIFO.
|
||||
* For capture, this ensures that we transfer the maximum amount without
|
||||
* underrunning the FIFO.
|
||||
*
|
||||
* f = SSI FIFO depth
|
||||
* w = SSI watermark value (which equals f - 2)
|
||||
* b = DMA bandwidth count (in bytes)
|
||||
* s = sample size (in bytes, which equals frame_size * 2)
|
||||
*
|
||||
* For playback, we never transmit more than the transmit FIFO
|
||||
* watermark, otherwise we might write more data than the FIFO can hold.
|
||||
* The watermark is equal to the FIFO depth minus two.
|
||||
*
|
||||
* For capture, two equations must hold:
|
||||
* w > f - (b / s)
|
||||
* w >= b / s
|
||||
*
|
||||
* So, b > 2 * s, but b must also be <= s * w. To simplify, we set
|
||||
* b = s * w, which is equal to
|
||||
* (dma_private->ssi_fifo_depth - 2) * sample_bytes.
|
||||
*/
|
||||
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
||||
mr |= CCSR_DMA_MR_BWC(2 * frame_size);
|
||||
else
|
||||
mr |= CCSR_DMA_MR_BWC(frame_size);
|
||||
mr |= CCSR_DMA_MR_BWC((dma_private->ssi_fifo_depth - 2) * sample_bytes);
|
||||
|
||||
out_be32(&dma_channel->mr, mr);
|
||||
|
||||
|
|
@ -879,6 +902,7 @@ static int __devinit fsl_soc_dma_probe(struct of_device *of_dev,
|
|||
struct device_node *np = of_dev->dev.of_node;
|
||||
struct device_node *ssi_np;
|
||||
struct resource res;
|
||||
const uint32_t *iprop;
|
||||
int ret;
|
||||
|
||||
/* Find the SSI node that points to us. */
|
||||
|
|
@ -889,15 +913,17 @@ static int __devinit fsl_soc_dma_probe(struct of_device *of_dev,
|
|||
}
|
||||
|
||||
ret = of_address_to_resource(ssi_np, 0, &res);
|
||||
of_node_put(ssi_np);
|
||||
if (ret) {
|
||||
dev_err(&of_dev->dev, "could not determine device resources\n");
|
||||
dev_err(&of_dev->dev, "could not determine resources for %s\n",
|
||||
ssi_np->full_name);
|
||||
of_node_put(ssi_np);
|
||||
return ret;
|
||||
}
|
||||
|
||||
dma = kzalloc(sizeof(*dma) + strlen(np->full_name), GFP_KERNEL);
|
||||
if (!dma) {
|
||||
dev_err(&of_dev->dev, "could not allocate dma object\n");
|
||||
of_node_put(ssi_np);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
|
|
@ -910,6 +936,15 @@ static int __devinit fsl_soc_dma_probe(struct of_device *of_dev,
|
|||
dma->ssi_stx_phys = res.start + offsetof(struct ccsr_ssi, stx0);
|
||||
dma->ssi_srx_phys = res.start + offsetof(struct ccsr_ssi, srx0);
|
||||
|
||||
iprop = of_get_property(ssi_np, "fsl,fifo-depth", NULL);
|
||||
if (iprop)
|
||||
dma->ssi_fifo_depth = *iprop;
|
||||
else
|
||||
/* Older 8610 DTs didn't have the fifo-depth property */
|
||||
dma->ssi_fifo_depth = 8;
|
||||
|
||||
of_node_put(ssi_np);
|
||||
|
||||
ret = snd_soc_register_platform(&of_dev->dev, &dma->dai);
|
||||
if (ret) {
|
||||
dev_err(&of_dev->dev, "could not register platform\n");
|
||||
|
|
|
|||
|
|
@ -93,6 +93,7 @@ struct fsl_ssi_private {
|
|||
unsigned int playback;
|
||||
unsigned int capture;
|
||||
int asynchronous;
|
||||
unsigned int fifo_depth;
|
||||
struct snd_soc_dai_driver cpu_dai_drv;
|
||||
struct device_attribute dev_attr;
|
||||
struct platform_device *pdev;
|
||||
|
|
@ -337,11 +338,20 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream,
|
|||
|
||||
/*
|
||||
* Set the watermark for transmit FIFI 0 and receive FIFO 0. We
|
||||
* don't use FIFO 1. Since the SSI only supports stereo, the
|
||||
* watermark should never be an odd number.
|
||||
* don't use FIFO 1. We program the transmit water to signal a
|
||||
* DMA transfer if there are only two (or fewer) elements left
|
||||
* in the FIFO. Two elements equals one frame (left channel,
|
||||
* right channel). This value, however, depends on the depth of
|
||||
* the transmit buffer.
|
||||
*
|
||||
* We program the receive FIFO to notify us if at least two
|
||||
* elements (one frame) have been written to the FIFO. We could
|
||||
* make this value larger (and maybe we should), but this way
|
||||
* data will be written to memory as soon as it's available.
|
||||
*/
|
||||
out_be32(&ssi->sfcsr,
|
||||
CCSR_SSI_SFCSR_TFWM0(6) | CCSR_SSI_SFCSR_RFWM0(2));
|
||||
CCSR_SSI_SFCSR_TFWM0(ssi_private->fifo_depth - 2) |
|
||||
CCSR_SSI_SFCSR_RFWM0(ssi_private->fifo_depth - 2));
|
||||
|
||||
/*
|
||||
* We keep the SSI disabled because if we enable it, then the
|
||||
|
|
@ -622,6 +632,7 @@ static int __devinit fsl_ssi_probe(struct of_device *of_dev,
|
|||
struct device_attribute *dev_attr = NULL;
|
||||
struct device_node *np = of_dev->dev.of_node;
|
||||
const char *p, *sprop;
|
||||
const uint32_t *iprop;
|
||||
struct resource res;
|
||||
char name[64];
|
||||
|
||||
|
|
@ -678,6 +689,14 @@ static int __devinit fsl_ssi_probe(struct of_device *of_dev,
|
|||
else
|
||||
ssi_private->cpu_dai_drv.symmetric_rates = 1;
|
||||
|
||||
/* Determine the FIFO depth. */
|
||||
iprop = of_get_property(np, "fsl,fifo-depth", NULL);
|
||||
if (iprop)
|
||||
ssi_private->fifo_depth = *iprop;
|
||||
else
|
||||
/* Older 8610 DTs didn't have the fifo-depth property */
|
||||
ssi_private->fifo_depth = 8;
|
||||
|
||||
/* Initialize the the device_attribute structure */
|
||||
dev_attr = &ssi_private->dev_attr;
|
||||
dev_attr->attr.name = "statistics";
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user