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linux/sound/soc/codecs/wl1273.c
Thomas Gleixner 2b27bdcc20 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336 
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 246 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000436.674189849@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:37:07 +02:00

509 lines
12 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-only
/*
* ALSA SoC WL1273 codec driver
*
* Author: Matti Aaltonen, <matti.j.aaltonen@nokia.com>
*
* Copyright: (C) 2010, 2011 Nokia Corporation
*/
#include <linux/mfd/wl1273-core.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.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->client->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 = core->write(core, WL1273_I2S_MODE_CONFIG_SET, mode);
if (r)
goto out;
core->i2s_mode = mode;
r = core->write(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 device *dev = &core->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 = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
else if (channel_number == 1 && core->mode == WL1273_MODE_TX)
r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
else if (channel_number == 2 && core->mode == WL1273_MODE_RX)
r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
else if (channel_number == 2 && core->mode == WL1273_MODE_TX)
r = core->write(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_component *component = snd_soc_kcontrol_component(kcontrol);
struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
ucontrol->value.enumerated.item[0] = wl1273->mode;
return 0;
}
/*
* TODO: Implement the audio routing in the driver. Now this control
* only indicates the setting that has been done elsewhere (in the user
* space).
*/
static const char * const 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_component *component = snd_soc_kcontrol_component(kcontrol);
struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
if (wl1273->mode == ucontrol->value.enumerated.item[0])
return 0;
/* Do not allow changes while stream is running */
if (snd_soc_component_is_active(component))
return -EPERM;
if (ucontrol->value.enumerated.item[0] >= ARRAY_SIZE(wl1273_audio_route))
return -EINVAL;
wl1273->mode = ucontrol->value.enumerated.item[0];
return 1;
}
static SOC_ENUM_SINGLE_EXT_DECL(wl1273_enum, wl1273_audio_route);
static int snd_wl1273_fm_audio_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
dev_dbg(component->dev, "%s: enter.\n", __func__);
ucontrol->value.enumerated.item[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_component *component = snd_soc_kcontrol_component(kcontrol);
struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
int val, r = 0;
dev_dbg(component->dev, "%s: enter.\n", __func__);
val = ucontrol->value.enumerated.item[0];
if (wl1273->core->audio_mode == val)
return 0;
r = wl1273->core->set_audio(wl1273->core, val);
if (r < 0)
return r;
return 1;
}
static const char * const wl1273_audio_strings[] = { "Digital", "Analog" };
static SOC_ENUM_SINGLE_EXT_DECL(wl1273_audio_enum, wl1273_audio_strings);
static int snd_wl1273_fm_volume_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
dev_dbg(component->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_component *component = snd_soc_kcontrol_component(kcontrol);
struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
int r;
dev_dbg(component->dev, "%s: enter.\n", __func__);
r = wl1273->core->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 const struct snd_soc_dapm_widget wl1273_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("RX"),
SND_SOC_DAPM_OUTPUT("TX"),
};
static const struct snd_soc_dapm_route wl1273_dapm_routes[] = {
{ "Capture", NULL, "RX" },
{ "TX", NULL, "Playback" },
};
static int wl1273_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
switch (wl1273->mode) {
case WL1273_MODE_BT:
snd_pcm_hw_constraint_single(substream->runtime,
SNDRV_PCM_HW_PARAM_RATE, 8000);
snd_pcm_hw_constraint_single(substream->runtime,
SNDRV_PCM_HW_PARAM_CHANNELS, 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 wl1273_priv *wl1273 = snd_soc_component_get_drvdata(dai->component);
struct wl1273_core *core = wl1273->core;
unsigned int rate, width, r;
if (params_width(params) != 16) {
dev_err(dai->dev, "%d bits/sample not supported\n",
params_width(params));
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 const 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_component *component, unsigned int *fmt)
{
struct wl1273_priv *wl1273;
if (component == NULL || fmt == NULL)
return -EINVAL;
wl1273 = snd_soc_component_get_drvdata(component);
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_component *component)
{
struct wl1273_core **core = component->dev->platform_data;
struct wl1273_priv *wl1273;
dev_dbg(component->dev, "%s.\n", __func__);
if (!core) {
dev_err(component->dev, "Platform data is missing.\n");
return -EINVAL;
}
wl1273 = kzalloc(sizeof(struct wl1273_priv), GFP_KERNEL);
if (!wl1273)
return -ENOMEM;
wl1273->mode = WL1273_MODE_BT;
wl1273->core = *core;
snd_soc_component_set_drvdata(component, wl1273);
return 0;
}
static void wl1273_remove(struct snd_soc_component *component)
{
struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
dev_dbg(component->dev, "%s\n", __func__);
kfree(wl1273);
}
static const struct snd_soc_component_driver soc_component_dev_wl1273 = {
.probe = wl1273_probe,
.remove = wl1273_remove,
.controls = wl1273_controls,
.num_controls = ARRAY_SIZE(wl1273_controls),
.dapm_widgets = wl1273_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wl1273_dapm_widgets),
.dapm_routes = wl1273_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(wl1273_dapm_routes),
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
.non_legacy_dai_naming = 1,
};
static int wl1273_platform_probe(struct platform_device *pdev)
{
return devm_snd_soc_register_component(&pdev->dev,
&soc_component_dev_wl1273,
&wl1273_dai, 1);
}
static int wl1273_platform_remove(struct platform_device *pdev)
{
return 0;
}
MODULE_ALIAS("platform:wl1273-codec");
static struct platform_driver wl1273_platform_driver = {
.driver = {
.name = "wl1273-codec",
},
.probe = wl1273_platform_probe,
.remove = wl1273_platform_remove,
};
module_platform_driver(wl1273_platform_driver);
MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
MODULE_DESCRIPTION("ASoC WL1273 codec driver");
MODULE_LICENSE("GPL");
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