| /* |
| * Copyright (C) 2014 Freescale Semiconductor, Inc. |
| * |
| * Based on imx-wm8962.c |
| * Copyright (C) 2012 Freescale Semiconductor, Inc. |
| * Copyright (C) 2012 Linaro Ltd. |
| * |
| * 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/of_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 "../codecs/wm8962.h" |
| #include "fsl_sai.h" |
| |
| #define DAI_NAME_SIZE 32 |
| |
| struct imx_tfa9890_data { |
| struct snd_soc_dai_link dai_link; |
| struct snd_soc_card card; |
| }; |
| |
| struct imx_priv { |
| struct snd_soc_codec *codec; |
| struct platform_device *pdev; |
| struct snd_pcm_substream *first_stream; |
| struct snd_card *snd_card; |
| }; |
| static struct imx_priv card_priv; |
| |
| static const struct snd_soc_dapm_widget imx_tfa9890_dapm_widgets[] = { |
| SND_SOC_DAPM_SPK("Ext Spk", NULL), |
| }; |
| |
| static int imx_mono_spkr_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 imx_priv *priv = &card_priv; |
| struct device *dev = &priv->pdev->dev; |
| unsigned int sample_rate = params_rate(params); |
| snd_pcm_format_t sample_format = params_format(params); |
| u32 dai_format, pll_out; |
| int ret = 0; |
| |
| if (!priv->first_stream) { |
| priv->first_stream = substream; |
| } |
| |
| dai_format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBS_CFS; |
| |
| /* set codec DAI configuration */ |
| ret = snd_soc_dai_set_fmt(codec_dai, dai_format); |
| if (ret) { |
| dev_err(dev, "failed to set codec dai fmt: %d\n", ret); |
| return ret; |
| } |
| ret = snd_soc_dai_set_fmt(cpu_dai, dai_format); |
| if (ret) { |
| dev_err(dev, "failed to set codec dai fmt: %d\n", ret); |
| return ret; |
| } |
| |
| switch(sample_format) |
| { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| case SNDRV_PCM_FORMAT_S16_BE: |
| case SNDRV_PCM_FORMAT_U16_LE: |
| case SNDRV_PCM_FORMAT_U16_BE: |
| pll_out = 32 * sample_rate; |
| break; |
| case SNDRV_PCM_FORMAT_S24_LE: |
| case SNDRV_PCM_FORMAT_S24_BE: |
| case SNDRV_PCM_FORMAT_U24_LE: |
| case SNDRV_PCM_FORMAT_U24_BE: |
| pll_out = 48 * sample_rate; |
| break; |
| case SNDRV_PCM_FORMAT_S32_LE: |
| case SNDRV_PCM_FORMAT_S32_BE: |
| case SNDRV_PCM_FORMAT_U32_LE: |
| case SNDRV_PCM_FORMAT_U32_BE: |
| pll_out = 64 * sample_rate; |
| break; |
| default: |
| pll_out = 0; /* Just to get rid of the warning during compilation */ |
| dev_err(dev, "Unhandled format\n"); |
| break; |
| } |
| |
| ret = snd_soc_dai_set_sysclk(codec_dai, FSL_SAI_CLK_MAST1 /* ignored */, |
| pll_out, SND_SOC_CLOCK_IN /* ignored */); |
| if (ret) { |
| dev_err(dev, "failed to set SYSCLK: %d\n", ret); |
| return ret; |
| } |
| ret = snd_soc_dai_set_sysclk(cpu_dai, FSL_SAI_CLK_MAST1, |
| pll_out, SND_SOC_CLOCK_OUT); |
| if (ret) { |
| dev_err(dev, "failed to set SYSCLK: %d\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int imx_mono_spkr_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_dai *cpu_dai = rtd->cpu_dai; |
| struct imx_priv *priv = &card_priv; |
| struct device *dev = &priv->pdev->dev; |
| int ret; |
| |
| /* We don't need to handle anything if there's no substream running */ |
| if (!priv->first_stream) |
| return 0; |
| |
| if (!priv->first_stream) { |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| { |
| snd_soc_dai_digital_mute(codec_dai, 1, substream->stream); |
| snd_soc_dai_digital_mute(cpu_dai, 1, substream->stream); |
| } |
| |
| ret = snd_soc_dai_set_sysclk(codec_dai, FSL_SAI_CLK_MAST1 /*ignored*/, |
| 0, SND_SOC_CLOCK_IN /*ignored*/); |
| if (ret < 0) { |
| dev_err(dev, "failed to switch away from FLL: %d\n", ret); |
| return ret; |
| } |
| ret = snd_soc_dai_set_sysclk(cpu_dai, FSL_SAI_CLK_MAST1, |
| 0, SND_SOC_CLOCK_OUT); |
| if (ret < 0) { |
| dev_err(dev, "failed to switch away from FLL: %d\n", ret); |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static struct snd_soc_ops imx_mono_spkr_ops = { |
| .hw_params = imx_mono_spkr_hw_params, |
| .hw_free = imx_mono_spkr_hw_free, |
| }; |
| |
| static int imx_tfa9890_probe(struct platform_device *pdev) |
| { |
| struct device_node *cpu_np, *codec_np; |
| struct platform_device *cpu_pdev; |
| struct imx_priv *priv = &card_priv; |
| struct i2c_client *codec_dev; |
| struct imx_tfa9890_data *data; |
| int ret; |
| |
| priv->pdev = pdev; |
| |
| 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; |
| } |
| |
| 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; |
| } |
| |
| 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->driver) { |
| dev_err(&pdev->dev, "failed to find codec platform device\n"); |
| ret = -EINVAL; |
| goto fail; |
| } |
| |
| priv->first_stream = NULL; |
| |
| data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); |
| if (!data) { |
| ret = -ENOMEM; |
| goto fail; |
| } |
| |
| data->dai_link.name = "tfa9890_codec"; |
| data->dai_link.stream_name = "MONO_SPKR"; |
| data->dai_link.codec_dai_name = "tfa9890_codec"; |
| data->dai_link.codec_of_node = codec_np; |
| data->dai_link.cpu_dai_name = dev_name(&cpu_pdev->dev); |
| data->dai_link.platform_of_node = cpu_np; |
| data->dai_link.ops = &imx_mono_spkr_ops; |
| data->dai_link.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBS_CFS; |
| |
| 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_link; |
| data->card.dapm_widgets = imx_tfa9890_dapm_widgets; |
| data->card.num_dapm_widgets = ARRAY_SIZE(imx_tfa9890_dapm_widgets); |
| |
| platform_set_drvdata(pdev, &data->card); |
| snd_soc_card_set_drvdata(&data->card, data); |
| |
| ret = snd_soc_register_card(&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; |
| |
| fail: |
| if (cpu_np) |
| of_node_put(cpu_np); |
| if (codec_np) |
| of_node_put(codec_np); |
| |
| return ret; |
| } |
| |
| static int imx_tfa9890_remove(struct platform_device *pdev) |
| { |
| struct snd_soc_card *card = platform_get_drvdata(pdev); |
| |
| snd_soc_unregister_card(card); |
| |
| return 0; |
| } |
| |
| static const struct of_device_id imx_tfa9890_dt_ids[] = { |
| { .compatible = "fsl,imx-audio-tfa9890", }, |
| { /* sentinel */ } |
| }; |
| MODULE_DEVICE_TABLE(of, imx_tfa9890_dt_ids); |
| |
| static struct platform_driver imx_tfa9890_driver = { |
| .driver = { |
| .name = "imx-tfa9890", |
| .owner = THIS_MODULE, |
| .pm = &snd_soc_pm_ops, |
| .of_match_table = imx_tfa9890_dt_ids, |
| }, |
| .probe = imx_tfa9890_probe, |
| .remove = imx_tfa9890_remove, |
| }; |
| module_platform_driver(imx_tfa9890_driver); |
| |
| MODULE_AUTHOR("Freescale Semiconductor, Inc."); |
| MODULE_DESCRIPTION("Freescale i.MX TFA9890 ASoC machine driver"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_ALIAS("platform:imx-tfa9890"); |