| /* |
| * Copyright (C) 2015 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/wm8994/registers.h> |
| #include <linux/mfd/syscon.h> |
| #include "../fsl/fsl_sai.h" |
| #include "../codecs/wm8994.h" |
| |
| #define DAI_NAME_SIZE 32 |
| |
| struct imx_wm8958_data { |
| struct snd_soc_dai_link dai; |
| struct snd_soc_card card; |
| char codec_dai_name[DAI_NAME_SIZE]; |
| char platform_name[DAI_NAME_SIZE]; |
| struct clk *mclk; |
| unsigned int clk_frequency; |
| bool is_codec_master; |
| int sr_stream[2]; |
| struct regmap *gpr; |
| }; |
| |
| struct imx_priv { |
| int hp_gpio; |
| int hp_active_low; |
| struct snd_soc_codec *codec; |
| struct platform_device *pdev; |
| struct snd_kcontrol *headphone_kctl; |
| struct snd_card *snd_card; |
| }; |
| |
| static struct imx_priv card_priv; |
| |
| static struct snd_soc_jack imx_hp_jack; |
| |
| static struct snd_soc_jack_pin imx_hp_jack_pins[] = { |
| { |
| .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 = 1, |
| }; |
| |
| static int hpjack_status_check(void) |
| { |
| struct imx_priv *priv = &card_priv; |
| struct platform_device *pdev = priv->pdev; |
| char *envp[3], *buf; |
| int hp_status, ret; |
| |
| if (!gpio_is_valid(priv->hp_gpio)) |
| return 0; |
| |
| hp_status = gpio_get_value(priv->hp_gpio) ? 1 : 0; |
| buf = kmalloc(32, GFP_ATOMIC); |
| if (!buf) { |
| dev_err(&pdev->dev, "%s kmalloc failed\n", __func__); |
| return -ENOMEM; |
| } |
| |
| if (hp_status != priv->hp_active_low) { |
| snprintf(buf, 32, "STATE=%d", 2); |
| snd_soc_dapm_disable_pin(&priv->codec->dapm, "Ext Spk"); |
| ret = imx_hp_jack_gpio.report; |
| snd_kctl_jack_report(priv->snd_card, priv->headphone_kctl, 1); |
| } else { |
| snprintf(buf, 32, "STATE=%d", 0); |
| snd_soc_dapm_enable_pin(&priv->codec->dapm, "Ext Spk"); |
| ret = 0; |
| snd_kctl_jack_report(priv->snd_card, priv->headphone_kctl, 0); |
| } |
| |
| envp[0] = "NAME=headphone"; |
| envp[1] = buf; |
| envp[2] = NULL; |
| kobject_uevent_env(&pdev->dev.kobj, KOBJ_CHANGE, envp); |
| kfree(buf); |
| |
| return ret; |
| } |
| |
| static const struct snd_soc_dapm_widget imx_wm8958_dapm_widgets[] = { |
| SND_SOC_DAPM_HP("Headphone Jack", NULL), |
| SND_SOC_DAPM_SPK("Ext Spk", NULL), |
| }; |
| |
| static const struct snd_soc_dapm_route imx_wm8958_dapm_route[] = { |
| {"Headphone Jack", NULL, "HPOUT1L"}, |
| {"Headphone Jack", NULL, "HPOUT1R"}, |
| {"Ext Spk", NULL, "SPKOUTLP"}, |
| {"Ext Spk", NULL, "SPKOUTLN"}, |
| {"Ext Spk", NULL, "SPKOUTRP"}, |
| {"Ext Spk", NULL, "SPKOUTRN"}, |
| {"IN1LN", NULL, "MICBIAS2"}, |
| }; |
| |
| 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_codec *codec = codec_dai->codec; |
| struct snd_soc_card *card = codec->card; |
| struct device *dev = card->dev; |
| struct imx_wm8958_data *data = snd_soc_card_get_drvdata(card); |
| bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; |
| unsigned int sample_rate = params_rate(params); |
| unsigned int pll_out; |
| int ret; |
| |
| if (tx && params_width(params) == 24) { |
| if (sample_rate == 88200 || sample_rate == 96000 || |
| sample_rate == 48000 || sample_rate == 44100) { |
| dev_err(dev, "Can't support sample rate %dHZ\n", sample_rate); |
| return -EINVAL; |
| } |
| } else if (!tx && params_width(params) == 24) { |
| if (sample_rate == 44100 || sample_rate == 48000) { |
| dev_err(dev, "Can't support sample rate %dHZ\n", sample_rate); |
| return -EINVAL; |
| } |
| } |
| |
| ret = snd_soc_dai_set_fmt(codec_dai, data->dai.dai_fmt); |
| if (ret) { |
| dev_err(dev, "failed to set codec dai fmt: %d\n", ret); |
| return ret; |
| } |
| |
| ret = snd_soc_dai_set_fmt(cpu_dai, data->dai.dai_fmt); |
| if (ret) { |
| dev_err(dev, "failed to set cpu dai fmt: %d\n", ret); |
| return ret; |
| } |
| |
| data->clk_frequency = clk_get_rate(data->mclk); |
| |
| if (!data->is_codec_master) { |
| 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; |
| } |
| |
| ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_FLL_SRC_MCLK1, |
| data->clk_frequency, SND_SOC_CLOCK_IN); |
| if (ret) { |
| dev_err(dev, "failed to set codec sysclk: %d\n", ret); |
| return ret; |
| } |
| } else { |
| data->sr_stream[tx] = sample_rate; |
| |
| if (params_width(params) == 24) |
| pll_out = data->sr_stream[tx] * 384; |
| else |
| pll_out = data->sr_stream[tx] * 256; |
| |
| ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, |
| WM8994_FLL_SRC_MCLK1, |
| data->clk_frequency, |
| pll_out); |
| if (ret) { |
| dev_err(dev, "failed to set codec pll: %d\n", ret); |
| return ret; |
| } |
| |
| 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; |
| } |
| |
| ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1, |
| pll_out, SND_SOC_CLOCK_OUT); |
| if (ret) { |
| dev_err(dev, "failed to set codec sysclk: %d\n", ret); |
| return ret; |
| } |
| } |
| |
| /* |
| * Set GPIO1 pin function to reserve, so that DAC1 and ADC1 using shared |
| * LRCLK from DACLRCK1. |
| */ |
| snd_soc_update_bits(codec, WM8994_GPIO_1, 0x1f, 0x2); |
| |
| /* |
| * Clear ADC_OSR128 bit to support slower SYSCLK, and support ADC sample |
| * rate 8K, 11.025K and 12K. |
| */ |
| snd_soc_update_bits(codec, WM8994_OVERSAMPLING, 1<<1, 0); |
| return 0; |
| } |
| |
| 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_wm8958_data *data = snd_soc_card_get_drvdata(card); |
| bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; |
| |
| if (data->is_codec_master && |
| data->sr_stream[!tx] == 0 && data->sr_stream[tx]) { |
| /* |
| * We should connect AIF1CLK source to FLL after enable FLL, and |
| * disconnet AIF1CLK source to FLL before disable FLL, otherwise |
| * FLL worked abnormal. |
| */ |
| snd_soc_dai_set_sysclk(codec_dai, WM8994_FLL_SRC_MCLK1, |
| data->clk_frequency, SND_SOC_CLOCK_OUT); |
| |
| /* Disable FLL1 after all stream finished. */ |
| snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, 0, 0, 0); |
| } |
| |
| data->sr_stream[tx] = 0; |
| |
| return 0; |
| } |
| |
| static u32 imx_wm8958_adc_rates[] = { |
| 8000, 11025, 12000, 16000, 22050, |
| 24000, 32000, 44100, 48000 |
| }; |
| |
| static u32 imx_wm8958_dac_rates[] = { |
| 8000, 11025, 12000, 16000, 22050, |
| 24000, 32000, 44100, 48000, 88200, 96000 |
| }; |
| |
| static struct snd_pcm_hw_constraint_list imx_wm8958_adc_rate_constraints = { |
| .count = ARRAY_SIZE(imx_wm8958_adc_rates), |
| .list = imx_wm8958_adc_rates, |
| }; |
| |
| static struct snd_pcm_hw_constraint_list imx_wm8958_dac_rate_constraints = { |
| .count = ARRAY_SIZE(imx_wm8958_dac_rates), |
| .list = imx_wm8958_dac_rates, |
| }; |
| |
| static int imx_hifi_startup(struct snd_pcm_substream *substream) |
| { |
| bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; |
| int ret = 0; |
| |
| if (!tx) |
| ret = snd_pcm_hw_constraint_list(substream->runtime, 0, |
| SNDRV_PCM_HW_PARAM_RATE, &imx_wm8958_adc_rate_constraints); |
| else |
| ret = snd_pcm_hw_constraint_list(substream->runtime, 0, |
| SNDRV_PCM_HW_PARAM_RATE, &imx_wm8958_dac_rate_constraints); |
| return ret; |
| } |
| |
| static struct snd_soc_ops imx_hifi_ops = { |
| .hw_params = imx_hifi_hw_params, |
| .hw_free = imx_hifi_hw_free, |
| .startup = imx_hifi_startup, |
| }; |
| |
| static int imx_wm8958_gpio_init(struct snd_soc_card *card) |
| { |
| struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; |
| struct snd_soc_codec *codec = codec_dai->codec; |
| struct imx_priv *priv = &card_priv; |
| int ret; |
| priv->codec = codec; |
| |
| if (gpio_is_valid(priv->hp_gpio)) { |
| imx_hp_jack_gpio.gpio = priv->hp_gpio; |
| imx_hp_jack_gpio.jack_status_check = hpjack_status_check; |
| |
| ret = snd_soc_jack_new(codec, "Headphone Jack", |
| SND_JACK_HEADPHONE, &imx_hp_jack); |
| if (ret) |
| return ret; |
| ret = snd_soc_jack_add_pins(&imx_hp_jack, |
| ARRAY_SIZE(imx_hp_jack_pins), imx_hp_jack_pins); |
| if (ret) |
| return ret; |
| ret = snd_soc_jack_add_gpios(&imx_hp_jack, 1, |
| &imx_hp_jack_gpio); |
| if (ret) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static ssize_t show_headphone(struct device_driver *dev, char *buf) |
| { |
| struct imx_priv *priv = &card_priv; |
| int hp_status; |
| |
| if (!gpio_is_valid(priv->hp_gpio)) { |
| strcpy(buf, "no detect gpio connected\n"); |
| return strlen(buf); |
| } |
| |
| /* Check if headphone is plugged in */ |
| hp_status = gpio_get_value(priv->hp_gpio) ? 1 : 0; |
| |
| if (hp_status != priv->hp_active_low) |
| strcpy(buf, "headphone\n"); |
| else |
| strcpy(buf, "speaker\n"); |
| |
| return strlen(buf); |
| } |
| |
| static DRIVER_ATTR(headphone, S_IRUGO | S_IWUSR, show_headphone, NULL); |
| |
| static int imx_wm8958_set_bias_level(struct snd_soc_card *card, |
| struct snd_soc_dapm_context *dapm, |
| enum snd_soc_bias_level level) |
| { |
| struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; |
| struct imx_wm8958_data *data = snd_soc_card_get_drvdata(card); |
| int ret; |
| |
| if (dapm->dev != codec_dai->dev) |
| return 0; |
| |
| switch (level) { |
| case SND_SOC_BIAS_STANDBY: |
| if (card->dapm.bias_level == SND_SOC_BIAS_OFF) { |
| if (!IS_ERR(data->mclk)) { |
| ret = clk_prepare_enable(data->mclk); |
| if (ret) { |
| dev_err(card->dev, "Failed to enable MCLK: %d\n", ret); |
| return ret; |
| } |
| } |
| } |
| break; |
| default: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int imx_wm8958_set_bias_level_post(struct snd_soc_card *card, |
| struct snd_soc_dapm_context *dapm, |
| enum snd_soc_bias_level level) |
| { |
| struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; |
| struct imx_wm8958_data *data = snd_soc_card_get_drvdata(card); |
| |
| if (dapm->dev != codec_dai->dev) |
| return 0; |
| |
| switch (level) { |
| case SND_SOC_BIAS_OFF: |
| if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY) |
| if (!IS_ERR(data->mclk)) |
| clk_disable_unprepare(data->mclk); |
| break; |
| default: |
| break; |
| } |
| |
| card->dapm.bias_level = level; |
| |
| return 0; |
| } |
| |
| static int imx_wm8958_probe(struct platform_device *pdev) |
| { |
| struct device_node *cpu_np, *codec_np, *gpr_np; |
| struct device_node *np = pdev->dev.of_node; |
| struct platform_device *cpu_pdev; |
| struct imx_priv *priv = &card_priv; |
| struct i2c_client *codec_dev; |
| struct imx_wm8958_data *data; |
| int ret; |
| |
| priv->pdev = pdev; |
| |
| cpu_np = of_parse_phandle(np, "cpu-dai", 0); |
| if (!cpu_np) { |
| dev_err(&pdev->dev, "cpu dai phandle missing or invalid\n"); |
| ret = -EINVAL; |
| goto fail; |
| } |
| |
| codec_np = of_parse_phandle(np, "audio-codec", 0); |
| if (!codec_np) { |
| dev_err(&pdev->dev, "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_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 = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); |
| if (!data) { |
| ret = -ENOMEM; |
| goto fail; |
| } |
| |
| gpr_np = of_parse_phandle(pdev->dev.of_node, "gpr", 0); |
| if (gpr_np) { |
| data->gpr = syscon_node_to_regmap(gpr_np); |
| if (IS_ERR(data->gpr)) { |
| ret = PTR_ERR(data->gpr); |
| dev_err(&pdev->dev, "failed to get gpr regmap\n"); |
| goto fail; |
| } |
| if (data->gpr) |
| regmap_update_bits(data->gpr, 4, 1<<20, 1<<20); |
| } |
| |
| if (of_property_read_bool(np, "codec-master")) { |
| data->dai.dai_fmt = SND_SOC_DAIFMT_CBM_CFM; |
| data->is_codec_master = true; |
| } else |
| data->dai.dai_fmt = SND_SOC_DAIFMT_CBS_CFS; |
| |
| data->mclk = devm_clk_get(&codec_dev->dev, "mclk1"); |
| if (IS_ERR(data->mclk)) { |
| ret = PTR_ERR(data->mclk); |
| dev_err(&pdev->dev, "failed to get codec clk: %d\n", ret); |
| goto fail; |
| } |
| |
| priv->hp_gpio = of_get_named_gpio_flags(np, "hp-det-gpios", 0, |
| (enum of_gpio_flags *)&priv->hp_active_low); |
| |
| data->dai.name = "HiFi"; |
| data->dai.stream_name = "HiFi"; |
| data->dai.codec_dai_name = "wm8994-aif1"; |
| data->dai.codec_name = "wm8994-codec"; |
| data->dai.cpu_dai_name = dev_name(&cpu_pdev->dev); |
| data->dai.platform_of_node = cpu_np; |
| data->dai.ops = &imx_hifi_ops; |
| data->dai.dai_fmt |= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF; |
| data->card.set_bias_level = imx_wm8958_set_bias_level; |
| data->card.set_bias_level_post = imx_wm8958_set_bias_level_post; |
| |
| data->card.dev = &pdev->dev; |
| ret = snd_soc_of_parse_card_name(&data->card, "model"); |
| if (ret) |
| goto fail; |
| |
| data->card.num_links = 1; |
| data->card.dai_link = &data->dai; |
| data->card.dapm_widgets = imx_wm8958_dapm_widgets; |
| data->card.num_dapm_widgets = ARRAY_SIZE(imx_wm8958_dapm_widgets); |
| data->card.dapm_routes = imx_wm8958_dapm_route; |
| data->card.num_dapm_routes = ARRAY_SIZE(imx_wm8958_dapm_route); |
| 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; |
| } |
| |
| priv->snd_card = data->card.snd_card; |
| |
| priv->headphone_kctl = snd_kctl_jack_new("Headphone", 0, NULL); |
| ret = snd_ctl_add(data->card.snd_card, priv->headphone_kctl); |
| if (ret) |
| goto fail; |
| |
| ret = imx_wm8958_gpio_init(&data->card); |
| |
| if (gpio_is_valid(priv->hp_gpio)) { |
| ret = driver_create_file(pdev->dev.driver, |
| &driver_attr_headphone); |
| if (ret) { |
| dev_err(&pdev->dev, |
| "create hp attr failed (%d)\n", ret); |
| goto fail; |
| } |
| } |
| |
| fail: |
| if (cpu_np) |
| of_node_put(cpu_np); |
| if (codec_np) |
| of_node_put(codec_np); |
| |
| return ret; |
| } |
| |
| static int imx_wm8958_remove(struct platform_device *pdev) |
| { |
| driver_remove_file(pdev->dev.driver, &driver_attr_headphone); |
| return 0; |
| } |
| |
| static const struct of_device_id imx_wm8958_dt_ids[] = { |
| { .compatible = "fsl,imx-audio-wm8958", }, |
| { /* sentinel */ } |
| }; |
| MODULE_DEVICE_TABLE(of, imx_wm8958_dt_ids); |
| |
| static struct platform_driver imx_wm8958_driver = { |
| .driver = { |
| .name = "imx-wm8958", |
| .owner = THIS_MODULE, |
| .pm = &snd_soc_pm_ops, |
| .of_match_table = imx_wm8958_dt_ids, |
| }, |
| .probe = imx_wm8958_probe, |
| .remove = imx_wm8958_remove, |
| }; |
| module_platform_driver(imx_wm8958_driver); |
| |
| MODULE_AUTHOR("Freescale Semiconductor, Inc."); |
| MODULE_DESCRIPTION("Freescale i.MX WM8958 ASoC machine driver"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_ALIAS("platform:imx-wm8958"); |