blob: a72b7000796211ff4dc419af6cd9622eac647ad8 [file] [log] [blame]
/*
* Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/i2c.h>
#include <linux/of_gpio.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/clk.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include <sound/control.h>
#include <sound/pcm_params.h>
#include <sound/soc-dapm.h>
#include <linux/pinctrl/consumer.h>
#include <linux/mfd/syscon.h>
#include "../codecs/wm8960.h"
#include "fsl_sai.h"
struct imx_wm8960_data {
struct snd_soc_card card;
struct clk *codec_clk;
unsigned int clk_frequency;
bool is_codec_master;
bool is_codec_rpmsg;
bool is_stream_in_use[2];
bool is_stream_opened[2];
struct regmap *gpr;
unsigned int hp_det[2];
u32 asrc_rate;
u32 asrc_format;
};
struct imx_priv {
enum of_gpio_flags hp_active_low;
enum of_gpio_flags mic_active_low;
bool is_headset_jack;
struct platform_device *pdev;
struct platform_device *asrc_pdev;
};
static struct imx_priv card_priv;
static struct snd_soc_jack imx_hp_jack;
static struct snd_soc_jack_pin imx_hp_jack_pin = {
.pin = "Headphone Jack",
.mask = SND_JACK_HEADPHONE,
};
static struct snd_soc_jack_gpio imx_hp_jack_gpio = {
.name = "headphone detect",
.report = SND_JACK_HEADPHONE,
.debounce_time = 250,
.invert = 0,
};
static struct snd_soc_jack imx_mic_jack;
static struct snd_soc_jack_pin imx_mic_jack_pins = {
.pin = "Mic Jack",
.mask = SND_JACK_MICROPHONE,
};
static struct snd_soc_jack_gpio imx_mic_jack_gpio = {
.name = "mic detect",
.report = SND_JACK_MICROPHONE,
.debounce_time = 250,
.invert = 0,
};
static int hp_jack_status_check(void *data)
{
struct imx_priv *priv = &card_priv;
struct snd_soc_jack *jack = data;
struct snd_soc_dapm_context *dapm = &jack->card->dapm;
int hp_status, ret;
hp_status = gpio_get_value(imx_hp_jack_gpio.gpio);
if (hp_status != priv->hp_active_low) {
snd_soc_dapm_disable_pin(dapm, "Ext Spk");
if (priv->is_headset_jack) {
snd_soc_dapm_enable_pin(dapm, "Mic Jack");
snd_soc_dapm_disable_pin(dapm, "Main MIC");
}
ret = imx_hp_jack_gpio.report;
} else {
snd_soc_dapm_enable_pin(dapm, "Ext Spk");
if (priv->is_headset_jack) {
snd_soc_dapm_disable_pin(dapm, "Mic Jack");
snd_soc_dapm_enable_pin(dapm, "Main MIC");
}
ret = 0;
}
return ret;
}
static int mic_jack_status_check(void *data)
{
struct imx_priv *priv = &card_priv;
struct snd_soc_jack *jack = data;
struct snd_soc_dapm_context *dapm = &jack->card->dapm;
int mic_status, ret;
mic_status = gpio_get_value(imx_mic_jack_gpio.gpio);
if (mic_status != priv->mic_active_low) {
snd_soc_dapm_disable_pin(dapm, "Main MIC");
ret = imx_mic_jack_gpio.report;
} else {
snd_soc_dapm_enable_pin(dapm, "Main MIC");
ret = 0;
}
return ret;
}
static const struct snd_soc_dapm_widget imx_wm8960_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_SPK("Ext Spk", NULL),
SND_SOC_DAPM_MIC("Mic Jack", NULL),
SND_SOC_DAPM_MIC("Main MIC", NULL),
};
static int imx_wm8960_jack_init(struct snd_soc_card *card,
struct snd_soc_jack *jack, struct snd_soc_jack_pin *pin,
struct snd_soc_jack_gpio *gpio)
{
int ret;
ret = snd_soc_card_jack_new(card, pin->pin, pin->mask, jack, pin, 1);
if (ret) {
return ret;
}
ret = snd_soc_jack_add_gpios(jack, 1, gpio);
if (ret)
return ret;
return 0;
}
static ssize_t headphone_show(struct device_driver *dev, char *buf)
{
struct imx_priv *priv = &card_priv;
int hp_status;
/* Check if headphone is plugged in */
hp_status = gpio_get_value(imx_hp_jack_gpio.gpio);
if (hp_status != priv->hp_active_low)
strcpy(buf, "Headphone\n");
else
strcpy(buf, "Speaker\n");
return strlen(buf);
}
static ssize_t micphone_show(struct device_driver *dev, char *buf)
{
struct imx_priv *priv = &card_priv;
int mic_status;
/* Check if headphone is plugged in */
mic_status = gpio_get_value(imx_mic_jack_gpio.gpio);
if (mic_status != priv->mic_active_low)
strcpy(buf, "Mic Jack\n");
else
strcpy(buf, "Main MIC\n");
return strlen(buf);
}
static DRIVER_ATTR_RO(headphone);
static DRIVER_ATTR_RO(micphone);
static int imx_hifi_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_card *card = rtd->card;
struct imx_wm8960_data *data = snd_soc_card_get_drvdata(card);
bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
struct device *dev = card->dev;
unsigned int sample_rate = params_rate(params);
unsigned int pll_out;
unsigned int fmt;
int ret = 0;
data->is_stream_in_use[tx] = true;
if (data->is_stream_in_use[!tx])
return 0;
if (data->is_codec_master)
fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM;
else
fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS;
/* set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
if (ret) {
dev_err(dev, "failed to set cpu dai fmt: %d\n", ret);
return ret;
}
/* set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai, fmt);
if (ret) {
dev_err(dev, "failed to set codec dai fmt: %d\n", ret);
return ret;
}
if (!data->is_codec_master) {
ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0, 0, 2,
params_physical_width(params));
if (ret) {
dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret);
return ret;
}
ret = snd_soc_dai_set_sysclk(cpu_dai, 0, 0, SND_SOC_CLOCK_OUT);
if (ret) {
dev_err(dev, "failed to set cpu sysclk: %d\n", ret);
return ret;
}
return 0;
} else {
ret = snd_soc_dai_set_sysclk(cpu_dai, 0, 0, SND_SOC_CLOCK_IN);
if (ret) {
dev_err(dev, "failed to set cpu sysclk: %d\n", ret);
return ret;
}
}
data->clk_frequency = clk_get_rate(data->codec_clk);
/* Set codec pll */
if (params_width(params) == 24)
pll_out = sample_rate * 768;
else
pll_out = sample_rate * 512;
ret = snd_soc_dai_set_pll(codec_dai, WM8960_SYSCLK_AUTO, 0, data->clk_frequency, pll_out);
if (ret)
return ret;
ret = snd_soc_dai_set_sysclk(codec_dai, WM8960_SYSCLK_AUTO, pll_out, 0);
return ret;
}
static int imx_hifi_hw_free(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
struct snd_soc_card *card = rtd->card;
struct imx_wm8960_data *data = snd_soc_card_get_drvdata(card);
bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
struct device *dev = card->dev;
int ret;
data->is_stream_in_use[tx] = false;
if (data->is_codec_master && !data->is_stream_in_use[!tx]) {
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_CBS_CFS | SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF);
if (ret)
dev_warn(dev, "failed to set codec dai fmt: %d\n", ret);
}
return 0;
}
static u32 imx_wm8960_rates[] = { 8000, 16000, 32000, 48000 };
static struct snd_pcm_hw_constraint_list imx_wm8960_rate_constraints = {
.count = ARRAY_SIZE(imx_wm8960_rates),
.list = imx_wm8960_rates,
};
static int imx_hifi_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_card *card = rtd->card;
struct imx_wm8960_data *data = snd_soc_card_get_drvdata(card);
bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
struct fsl_sai *sai = dev_get_drvdata(cpu_dai->dev);
int ret = 0;
data->is_stream_opened[tx] = true;
if (data->is_stream_opened[tx] != sai->is_stream_opened[tx] ||
data->is_stream_opened[!tx] != sai->is_stream_opened[!tx]) {
data->is_stream_opened[tx] = false;
return -EBUSY;
}
if (!data->is_codec_master) {
ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE, &imx_wm8960_rate_constraints);
if (ret)
return ret;
}
return ret;
}
static void imx_hifi_shutdown(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_card *card = rtd->card;
struct imx_wm8960_data *data = snd_soc_card_get_drvdata(card);
bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
data->is_stream_opened[tx] = false;
}
static struct snd_soc_ops imx_hifi_ops = {
.hw_params = imx_hifi_hw_params,
.hw_free = imx_hifi_hw_free,
.startup = imx_hifi_startup,
.shutdown = imx_hifi_shutdown,
};
static int imx_wm8960_late_probe(struct snd_soc_card *card)
{
struct snd_soc_pcm_runtime *rtd = list_first_entry(
&card->rtd_list, struct snd_soc_pcm_runtime, list);
struct snd_soc_dai *codec_dai = rtd->codec_dai;
struct snd_soc_codec *codec = codec_dai->codec;
struct imx_wm8960_data *data = snd_soc_card_get_drvdata(card);
/*
* codec ADCLRC pin configured as GPIO, DACLRC pin is used as a frame
* clock for ADCs and DACs
*/
snd_soc_update_bits(codec, WM8960_IFACE2, 1<<6, 1<<6);
/* GPIO1 used as headphone detect output */
snd_soc_update_bits(codec, WM8960_ADDCTL4, 7<<4, 3<<4);
/* Enable headphone jack detect */
snd_soc_update_bits(codec, WM8960_ADDCTL2, 1<<6, 1<<6);
snd_soc_update_bits(codec, WM8960_ADDCTL2, 1<<5, data->hp_det[1]<<5);
snd_soc_update_bits(codec, WM8960_ADDCTL4, 3<<2, data->hp_det[0]<<2);
snd_soc_update_bits(codec, WM8960_ADDCTL1, 3, 3);
return 0;
}
static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
{
struct snd_soc_card *card = rtd->card;
struct imx_wm8960_data *data = snd_soc_card_get_drvdata(card);
struct imx_priv *priv = &card_priv;
struct snd_interval *rate;
struct snd_mask *mask;
if (!priv->asrc_pdev)
return -EINVAL;
rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
rate->max = rate->min = data->asrc_rate;
mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
snd_mask_none(mask);
snd_mask_set(mask, data->asrc_format);
return 0;
}
static struct snd_soc_dai_link imx_wm8960_dai[] = {
{
.name = "HiFi",
.stream_name = "HiFi",
.codec_dai_name = "wm8960-hifi",
.ops = &imx_hifi_ops,
},
{
.name = "HiFi-ASRC-FE",
.stream_name = "HiFi-ASRC-FE",
.codec_name = "snd-soc-dummy",
.codec_dai_name = "snd-soc-dummy-dai",
.dynamic = 1,
.ignore_pmdown_time = 1,
.dpcm_playback = 1,
.dpcm_capture = 1,
.dpcm_merged_chan = 1,
},
{
.name = "HiFi-ASRC-BE",
.stream_name = "HiFi-ASRC-BE",
.codec_dai_name = "wm8960-hifi",
.platform_name = "snd-soc-dummy",
.no_pcm = 1,
.ignore_pmdown_time = 1,
.dpcm_playback = 1,
.dpcm_capture = 1,
.ops = &imx_hifi_ops,
.be_hw_params_fixup = be_hw_params_fixup,
},
};
static int of_parse_gpr(struct platform_device *pdev,
struct imx_wm8960_data *data)
{
int ret;
struct of_phandle_args args;
if (of_device_is_compatible(pdev->dev.of_node,
"fsl,imx7d-evk-wm8960"))
return 0;
ret = of_parse_phandle_with_fixed_args(pdev->dev.of_node,
"gpr", 3, 0, &args);
if (ret) {
dev_warn(&pdev->dev, "failed to get gpr property\n");
return ret;
}
data->gpr = syscon_node_to_regmap(args.np);
if (IS_ERR(data->gpr)) {
ret = PTR_ERR(data->gpr);
dev_err(&pdev->dev, "failed to get gpr regmap\n");
return ret;
}
regmap_update_bits(data->gpr, args.args[0], args.args[1],
args.args[2]);
return 0;
}
static int imx_wm8960_probe(struct platform_device *pdev)
{
struct device_node *cpu_np = NULL, *codec_np = NULL;
struct platform_device *cpu_pdev;
struct imx_priv *priv = &card_priv;
struct imx_wm8960_data *data;
struct platform_device *asrc_pdev = NULL;
struct device_node *asrc_np;
u32 width;
int ret;
priv->pdev = pdev;
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data) {
ret = -ENOMEM;
goto fail;
}
if (of_property_read_bool(pdev->dev.of_node, "codec-rpmsg"))
data->is_codec_rpmsg = true;
cpu_np = of_parse_phandle(pdev->dev.of_node, "cpu-dai", 0);
if (!cpu_np) {
dev_err(&pdev->dev, "cpu dai phandle missing or invalid\n");
ret = -EINVAL;
goto fail;
}
cpu_pdev = of_find_device_by_node(cpu_np);
if (!cpu_pdev) {
dev_err(&pdev->dev, "failed to find SAI platform device\n");
ret = -EINVAL;
goto fail;
}
codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
if (!codec_np) {
dev_err(&pdev->dev, "phandle missing or invalid\n");
ret = -EINVAL;
goto fail;
}
if (data->is_codec_rpmsg) {
struct platform_device *codec_dev;
codec_dev = of_find_device_by_node(codec_np);
if (!codec_dev || !codec_dev->dev.driver) {
dev_err(&pdev->dev, "failed to find codec platform device\n");
ret = -EINVAL;
goto fail;
}
data->codec_clk = devm_clk_get(&codec_dev->dev, "mclk");
if (IS_ERR(data->codec_clk)) {
ret = PTR_ERR(data->codec_clk);
dev_err(&pdev->dev, "failed to get codec clk: %d\n", ret);
goto fail;
}
} else {
struct i2c_client *codec_dev;
codec_dev = of_find_i2c_device_by_node(codec_np);
if (!codec_dev || !codec_dev->dev.driver) {
dev_err(&pdev->dev, "failed to find codec platform device\n");
ret = -EINVAL;
goto fail;
}
data->codec_clk = devm_clk_get(&codec_dev->dev, "mclk");
if (IS_ERR(data->codec_clk)) {
ret = PTR_ERR(data->codec_clk);
dev_err(&pdev->dev, "failed to get codec clk: %d\n", ret);
goto fail;
}
}
if (of_property_read_bool(pdev->dev.of_node, "codec-master"))
data->is_codec_master = true;
ret = of_parse_gpr(pdev, data);
if (ret)
goto fail;
of_property_read_u32_array(pdev->dev.of_node, "hp-det", data->hp_det, 2);
asrc_np = of_parse_phandle(pdev->dev.of_node, "asrc-controller", 0);
if (asrc_np) {
asrc_pdev = of_find_device_by_node(asrc_np);
priv->asrc_pdev = asrc_pdev;
}
data->card.dai_link = imx_wm8960_dai;
if (data->is_codec_rpmsg) {
imx_wm8960_dai[0].codec_name = "rpmsg-audio-codec-wm8960";
imx_wm8960_dai[0].codec_dai_name = "rpmsg-wm8960-hifi";
} else
imx_wm8960_dai[0].codec_of_node = codec_np;
imx_wm8960_dai[0].cpu_dai_name = dev_name(&cpu_pdev->dev);
imx_wm8960_dai[0].platform_of_node = cpu_np;
if (!asrc_pdev) {
data->card.num_links = 1;
} else {
imx_wm8960_dai[1].cpu_of_node = asrc_np;
imx_wm8960_dai[1].platform_of_node = asrc_np;
if (data->is_codec_rpmsg) {
imx_wm8960_dai[2].codec_name = "rpmsg-audio-codec-wm8960";
imx_wm8960_dai[2].codec_dai_name = "rpmsg-wm8960-hifi";
} else
imx_wm8960_dai[2].codec_of_node = codec_np;
imx_wm8960_dai[2].cpu_dai_name = dev_name(&cpu_pdev->dev);
data->card.num_links = 3;
ret = of_property_read_u32(asrc_np, "fsl,asrc-rate",
&data->asrc_rate);
if (ret) {
dev_err(&pdev->dev, "failed to get output rate\n");
ret = -EINVAL;
goto fail;
}
ret = of_property_read_u32(asrc_np, "fsl,asrc-width", &width);
if (ret) {
dev_err(&pdev->dev, "failed to get output rate\n");
ret = -EINVAL;
goto fail;
}
if (width == 24)
data->asrc_format = SNDRV_PCM_FORMAT_S24_LE;
else
data->asrc_format = SNDRV_PCM_FORMAT_S16_LE;
}
data->card.dev = &pdev->dev;
data->card.owner = THIS_MODULE;
ret = snd_soc_of_parse_card_name(&data->card, "model");
if (ret)
goto fail;
data->card.dapm_widgets = imx_wm8960_dapm_widgets;
data->card.num_dapm_widgets = ARRAY_SIZE(imx_wm8960_dapm_widgets);
ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
if (ret)
goto fail;
data->card.late_probe = imx_wm8960_late_probe;
platform_set_drvdata(pdev, &data->card);
snd_soc_card_set_drvdata(&data->card, data);
ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
goto fail;
}
imx_hp_jack_gpio.gpio = of_get_named_gpio_flags(pdev->dev.of_node,
"hp-det-gpios", 0, &priv->hp_active_low);
imx_mic_jack_gpio.gpio = of_get_named_gpio_flags(pdev->dev.of_node,
"mic-det-gpios", 0, &priv->mic_active_low);
if (gpio_is_valid(imx_hp_jack_gpio.gpio) &&
gpio_is_valid(imx_mic_jack_gpio.gpio) &&
imx_hp_jack_gpio.gpio == imx_mic_jack_gpio.gpio)
priv->is_headset_jack = true;
if (gpio_is_valid(imx_hp_jack_gpio.gpio)) {
if (priv->is_headset_jack) {
imx_hp_jack_pin.mask |= SND_JACK_MICROPHONE;
imx_hp_jack_gpio.report |= SND_JACK_MICROPHONE;
}
imx_hp_jack_gpio.jack_status_check = hp_jack_status_check;
imx_hp_jack_gpio.data = &imx_hp_jack;
ret = imx_wm8960_jack_init(&data->card, &imx_hp_jack,
&imx_hp_jack_pin, &imx_hp_jack_gpio);
if (ret) {
dev_warn(&pdev->dev, "hp jack init failed (%d)\n", ret);
goto out;
}
ret = driver_create_file(pdev->dev.driver, &driver_attr_headphone);
if (ret)
dev_warn(&pdev->dev, "create hp attr failed (%d)\n", ret);
}
if (gpio_is_valid(imx_mic_jack_gpio.gpio)) {
if (!priv->is_headset_jack) {
imx_mic_jack_gpio.jack_status_check = mic_jack_status_check;
imx_mic_jack_gpio.data = &imx_mic_jack;
ret = imx_wm8960_jack_init(&data->card, &imx_mic_jack,
&imx_mic_jack_pins, &imx_mic_jack_gpio);
if (ret) {
dev_warn(&pdev->dev, "mic jack init failed (%d)\n", ret);
goto out;
}
}
ret = driver_create_file(pdev->dev.driver, &driver_attr_micphone);
if (ret)
dev_warn(&pdev->dev, "create mic attr failed (%d)\n", ret);
}
out:
ret = 0;
fail:
if (cpu_np)
of_node_put(cpu_np);
if (codec_np)
of_node_put(codec_np);
return ret;
}
static int imx_wm8960_remove(struct platform_device *pdev)
{
driver_remove_file(pdev->dev.driver, &driver_attr_micphone);
driver_remove_file(pdev->dev.driver, &driver_attr_headphone);
return 0;
}
static const struct of_device_id imx_wm8960_dt_ids[] = {
{ .compatible = "fsl,imx-audio-wm8960", },
{ .compatible = "fsl,imx7d-evk-wm8960" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, imx_wm8960_dt_ids);
static struct platform_driver imx_wm8960_driver = {
.driver = {
.name = "imx-wm8960",
.pm = &snd_soc_pm_ops,
.of_match_table = imx_wm8960_dt_ids,
},
.probe = imx_wm8960_probe,
.remove = imx_wm8960_remove,
};
module_platform_driver(imx_wm8960_driver);
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_DESCRIPTION("Freescale i.MX WM8960 ASoC machine driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:imx-wm8960");