From cc3d4984086ad7e820d7d43ae42fe6b257c190bb Mon Sep 17 00:00:00 2001 From: Zidan Wang Date: Tue, 10 Feb 2015 11:26:58 +0800 Subject: MLK-11369-4 ASoC: imx-wm8958: port wm8958 machine driver from imx_3.14.y port wm8958 machine driver from imx_3.14.y. Signed-off-by: Zidan Wang Fix build for DRIVER_ATTR removal during 4.14 rebase Signed-off-by: Leonard Crestez --- sound/soc/fsl/imx-wm8958.c | 563 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 563 insertions(+) create mode 100644 sound/soc/fsl/imx-wm8958.c (limited to 'sound/soc/fsl/imx-wm8958.c') diff --git a/sound/soc/fsl/imx-wm8958.c b/sound/soc/fsl/imx-wm8958.c new file mode 100644 index 000000000000..74486f0dded9 --- /dev/null +++ b/sound/soc/fsl/imx-wm8958.c @@ -0,0 +1,563 @@ +/* + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#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 *data) +{ + 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); + 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(snd_soc_codec_get_dapm(priv->codec), "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(snd_soc_codec_get_dapm(priv->codec), "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 = rtd->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_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_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_card_jack_new(card, "Headphone Jack", + SND_JACK_HEADPHONE, &imx_hp_jack, + imx_hp_jack_pins, ARRAY_SIZE(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 headphone_show(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); + + if (hp_status != priv->hp_active_low) + strcpy(buf, "headphone\n"); + else + strcpy(buf, "speaker\n"); + + return strlen(buf); +} + +static DRIVER_ATTR_RO(headphone); + +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_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 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_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 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", 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", + .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"); -- cgit v1.2.3