| /* |
| * Copyright 2013 Freescale Semiconductor, Inc. |
| * |
| * Based on imx-sgtl5000.c |
| * Copyright 2012 Freescale Semiconductor, Inc. |
| * Copyright 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/i2c.h> |
| #include <linux/slab.h> |
| #include <linux/clk.h> |
| #include <sound/soc.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc-dapm.h> |
| #include <linux/pinctrl/consumer.h> |
| |
| #include "../codecs/wm8962.h" |
| #include "imx-audmux.h" |
| |
| #define DAI_NAME_SIZE 32 |
| |
| struct imx_wm8962_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 *codec_clk; |
| unsigned int clk_frequency; |
| }; |
| |
| struct imx_priv { |
| struct platform_device *pdev; |
| }; |
| static struct imx_priv card_priv; |
| |
| static const struct snd_soc_dapm_widget imx_wm8962_dapm_widgets[] = { |
| SND_SOC_DAPM_HP("Headphone Jack", NULL), |
| SND_SOC_DAPM_SPK("Ext Spk", NULL), |
| SND_SOC_DAPM_MIC("AMIC", NULL), |
| SND_SOC_DAPM_MIC("DMIC", NULL), |
| }; |
| |
| static int sample_rate = 44100; |
| static snd_pcm_format_t sample_format = SNDRV_PCM_FORMAT_S16_LE; |
| |
| static int imx_hifi_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| sample_rate = params_rate(params); |
| sample_format = params_format(params); |
| |
| return 0; |
| } |
| |
| static struct snd_soc_ops imx_hifi_ops = { |
| .hw_params = imx_hifi_hw_params, |
| }; |
| |
| static int imx_wm8962_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_priv *priv = &card_priv; |
| struct imx_wm8962_data *data = platform_get_drvdata(priv->pdev); |
| struct device *dev = &priv->pdev->dev; |
| unsigned int pll_out; |
| int ret; |
| |
| if (dapm->dev != codec_dai->dev) |
| return 0; |
| |
| switch (level) { |
| case SND_SOC_BIAS_PREPARE: |
| if (dapm->bias_level == SND_SOC_BIAS_STANDBY) { |
| if (sample_format == SNDRV_PCM_FORMAT_S24_LE) |
| pll_out = sample_rate * 384; |
| else |
| pll_out = sample_rate * 256; |
| |
| ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, |
| WM8962_FLL_MCLK, data->clk_frequency, |
| pll_out); |
| if (ret < 0) { |
| dev_err(dev, "failed to start FLL: %d\n", ret); |
| return ret; |
| } |
| |
| ret = snd_soc_dai_set_sysclk(codec_dai, |
| WM8962_SYSCLK_FLL, pll_out, |
| SND_SOC_CLOCK_IN); |
| if (ret < 0) { |
| dev_err(dev, "failed to set SYSCLK: %d\n", ret); |
| return ret; |
| } |
| } |
| break; |
| |
| case SND_SOC_BIAS_STANDBY: |
| if (dapm->bias_level == SND_SOC_BIAS_PREPARE) { |
| ret = snd_soc_dai_set_sysclk(codec_dai, |
| WM8962_SYSCLK_MCLK, data->clk_frequency, |
| SND_SOC_CLOCK_IN); |
| if (ret < 0) { |
| dev_err(dev, |
| "failed to switch away from FLL: %d\n", |
| ret); |
| return ret; |
| } |
| |
| ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, |
| 0, 0, 0); |
| if (ret < 0) { |
| dev_err(dev, "failed to stop FLL: %d\n", ret); |
| return ret; |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| dapm->bias_level = level; |
| |
| return 0; |
| } |
| |
| static int imx_wm8962_late_probe(struct snd_soc_card *card) |
| { |
| struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; |
| struct imx_priv *priv = &card_priv; |
| struct imx_wm8962_data *data = platform_get_drvdata(priv->pdev); |
| struct device *dev = &priv->pdev->dev; |
| int ret; |
| |
| ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, |
| data->clk_frequency, SND_SOC_CLOCK_IN); |
| if (ret < 0) |
| dev_err(dev, "failed to set sysclk in %s\n", __func__); |
| |
| return ret; |
| } |
| |
| static int imx_wm8962_probe(struct platform_device *pdev) |
| { |
| struct device_node *np = pdev->dev.of_node; |
| struct device_node *ssi_np, *codec_np; |
| struct platform_device *ssi_pdev; |
| struct imx_priv *priv = &card_priv; |
| struct i2c_client *codec_dev; |
| struct imx_wm8962_data *data; |
| int int_port, ext_port; |
| int ret; |
| |
| priv->pdev = pdev; |
| |
| ret = of_property_read_u32(np, "mux-int-port", &int_port); |
| if (ret) { |
| dev_err(&pdev->dev, "mux-int-port missing or invalid\n"); |
| return ret; |
| } |
| ret = of_property_read_u32(np, "mux-ext-port", &ext_port); |
| if (ret) { |
| dev_err(&pdev->dev, "mux-ext-port missing or invalid\n"); |
| return ret; |
| } |
| |
| /* |
| * The port numbering in the hardware manual starts at 1, while |
| * the audmux API expects it starts at 0. |
| */ |
| int_port--; |
| ext_port--; |
| ret = imx_audmux_v2_configure_port(int_port, |
| IMX_AUDMUX_V2_PTCR_SYN | |
| IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | |
| IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) | |
| IMX_AUDMUX_V2_PTCR_TFSDIR | |
| IMX_AUDMUX_V2_PTCR_TCLKDIR, |
| IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)); |
| if (ret) { |
| dev_err(&pdev->dev, "audmux internal port setup failed\n"); |
| return ret; |
| } |
| imx_audmux_v2_configure_port(ext_port, |
| IMX_AUDMUX_V2_PTCR_SYN, |
| IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)); |
| if (ret) { |
| dev_err(&pdev->dev, "audmux external port setup failed\n"); |
| return ret; |
| } |
| |
| ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0); |
| codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0); |
| if (!ssi_np || !codec_np) { |
| dev_err(&pdev->dev, "phandle missing or invalid\n"); |
| ret = -EINVAL; |
| goto fail; |
| } |
| |
| ssi_pdev = of_find_device_by_node(ssi_np); |
| if (!ssi_pdev) { |
| dev_err(&pdev->dev, "failed to find SSI 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; |
| } |
| |
| data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); |
| if (!data) { |
| ret = -ENOMEM; |
| goto fail; |
| } |
| |
| data->codec_clk = devm_clk_get(&codec_dev->dev, NULL); |
| if (IS_ERR(data->codec_clk)) { |
| ret = PTR_ERR(data->codec_clk); |
| dev_err(&codec_dev->dev, "failed to get codec clk: %d\n", ret); |
| goto fail; |
| } |
| |
| data->clk_frequency = clk_get_rate(data->codec_clk); |
| ret = clk_prepare_enable(data->codec_clk); |
| if (ret) { |
| dev_err(&codec_dev->dev, "failed to enable codec clk: %d\n", ret); |
| goto fail; |
| } |
| |
| data->dai.name = "HiFi"; |
| data->dai.stream_name = "HiFi"; |
| data->dai.codec_dai_name = "wm8962"; |
| data->dai.codec_of_node = codec_np; |
| data->dai.cpu_dai_name = dev_name(&ssi_pdev->dev); |
| data->dai.platform_of_node = ssi_np; |
| data->dai.ops = &imx_hifi_ops; |
| data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBM_CFM; |
| |
| data->card.dev = &pdev->dev; |
| ret = snd_soc_of_parse_card_name(&data->card, "model"); |
| if (ret) |
| goto clk_fail; |
| ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing"); |
| if (ret) |
| goto clk_fail; |
| data->card.num_links = 1; |
| data->card.dai_link = &data->dai; |
| data->card.dapm_widgets = imx_wm8962_dapm_widgets; |
| data->card.num_dapm_widgets = ARRAY_SIZE(imx_wm8962_dapm_widgets); |
| |
| data->card.late_probe = imx_wm8962_late_probe; |
| data->card.set_bias_level = imx_wm8962_set_bias_level; |
| |
| ret = snd_soc_register_card(&data->card); |
| if (ret) { |
| dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); |
| goto clk_fail; |
| } |
| |
| platform_set_drvdata(pdev, data); |
| of_node_put(ssi_np); |
| of_node_put(codec_np); |
| |
| return 0; |
| |
| clk_fail: |
| clk_disable_unprepare(data->codec_clk); |
| fail: |
| if (ssi_np) |
| of_node_put(ssi_np); |
| if (codec_np) |
| of_node_put(codec_np); |
| |
| return ret; |
| } |
| |
| static int imx_wm8962_remove(struct platform_device *pdev) |
| { |
| struct imx_wm8962_data *data = platform_get_drvdata(pdev); |
| |
| if (!IS_ERR(data->codec_clk)) |
| clk_disable_unprepare(data->codec_clk); |
| snd_soc_unregister_card(&data->card); |
| |
| return 0; |
| } |
| |
| static const struct of_device_id imx_wm8962_dt_ids[] = { |
| { .compatible = "fsl,imx-audio-wm8962", }, |
| { /* sentinel */ } |
| }; |
| MODULE_DEVICE_TABLE(of, imx_wm8962_dt_ids); |
| |
| static struct platform_driver imx_wm8962_driver = { |
| .driver = { |
| .name = "imx-wm8962", |
| .owner = THIS_MODULE, |
| .pm = &snd_soc_pm_ops, |
| .of_match_table = imx_wm8962_dt_ids, |
| }, |
| .probe = imx_wm8962_probe, |
| .remove = imx_wm8962_remove, |
| }; |
| module_platform_driver(imx_wm8962_driver); |
| |
| MODULE_AUTHOR("Freescale Semiconductor, Inc."); |
| MODULE_DESCRIPTION("Freescale i.MX WM8962 ASoC machine driver"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_ALIAS("platform:imx-wm8962"); |