+++ /dev/null
-// 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_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;
- }
-
- 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_CBP_CFP;
-
- break;
- case WL1273_MODE_BT:
- *fmt = SND_SOC_DAIFMT_DSP_A |
- SND_SOC_DAIFMT_IB_NF |
- SND_SOC_DAIFMT_CBP_CFP;
-
- 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,
-};
-
-static int wl1273_platform_probe(struct platform_device *pdev)
-{
- return devm_snd_soc_register_component(&pdev->dev,
- &soc_component_dev_wl1273,
- &wl1273_dai, 1);
-}
-
-MODULE_ALIAS("platform:wl1273-codec");
-
-static struct platform_driver wl1273_platform_driver = {
- .driver = {
- .name = "wl1273-codec",
- },
- .probe = wl1273_platform_probe,
-};
-
-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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