| // SPDX-License-Identifier: GPL-2.0 |
| // Copyright 2017-2020 NXP |
| |
| #include <linux/module.h> |
| #include <linux/of_platform.h> |
| #include <sound/jack.h> |
| #include <sound/pcm_params.h> |
| #include <sound/hdmi-codec.h> |
| #include "fsl_sai.h" |
| |
| /** |
| * struct cpu_priv - CPU private data |
| * @sysclk_freq: SYSCLK rates for set_sysclk() |
| * @sysclk_dir: SYSCLK directions for set_sysclk() |
| * @sysclk_id: SYSCLK ids for set_sysclk() |
| * @slot_width: Slot width of each frame |
| * |
| * Note: [1] for tx and [0] for rx |
| */ |
| struct cpu_priv { |
| unsigned long sysclk_freq[2]; |
| u32 sysclk_dir[2]; |
| u32 sysclk_id[2]; |
| u32 slot_width; |
| }; |
| |
| struct imx_hdmi_data { |
| struct snd_soc_dai_link dai; |
| struct snd_soc_card card; |
| struct snd_soc_jack hdmi_jack; |
| struct snd_soc_jack_pin hdmi_jack_pin; |
| struct cpu_priv cpu_priv; |
| u32 dai_fmt; |
| }; |
| |
| static int imx_hdmi_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct imx_hdmi_data *data = snd_soc_card_get_drvdata(rtd->card); |
| bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; |
| struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
| struct snd_soc_card *card = rtd->card; |
| struct device *dev = card->dev; |
| u32 slot_width = data->cpu_priv.slot_width; |
| int ret; |
| |
| /* MCLK always is (256 or 192) * rate. */ |
| ret = snd_soc_dai_set_sysclk(cpu_dai, data->cpu_priv.sysclk_id[tx], |
| 8 * slot_width * params_rate(params), |
| tx ? SND_SOC_CLOCK_OUT : SND_SOC_CLOCK_IN); |
| if (ret && ret != -ENOTSUPP) { |
| dev_err(dev, "failed to set cpu sysclk: %d\n", ret); |
| return ret; |
| } |
| |
| ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0, 0, 2, slot_width); |
| if (ret && ret != -ENOTSUPP) { |
| dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static struct snd_soc_ops imx_hdmi_ops = { |
| .hw_params = imx_hdmi_hw_params, |
| }; |
| |
| static const struct snd_soc_dapm_widget imx_hdmi_widgets[] = { |
| SND_SOC_DAPM_LINE("HDMI Jack", NULL), |
| }; |
| |
| static int imx_hdmi_init(struct snd_soc_pcm_runtime *rtd) |
| { |
| struct snd_soc_card *card = rtd->card; |
| struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
| struct snd_soc_component *component = codec_dai->component; |
| struct imx_hdmi_data *data = snd_soc_card_get_drvdata(card); |
| int ret; |
| |
| data->hdmi_jack_pin.pin = "HDMI Jack"; |
| data->hdmi_jack_pin.mask = SND_JACK_LINEOUT; |
| /* enable jack detection */ |
| ret = snd_soc_card_jack_new(card, "HDMI Jack", SND_JACK_LINEOUT, |
| &data->hdmi_jack, &data->hdmi_jack_pin, 1); |
| if (ret) { |
| dev_err(card->dev, "Can't new HDMI Jack %d\n", ret); |
| return ret; |
| } |
| |
| ret = snd_soc_component_set_jack(component, &data->hdmi_jack, NULL); |
| if (ret && ret != -EOPNOTSUPP) { |
| dev_err(card->dev, "Can't set HDMI Jack %d\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| }; |
| |
| static int imx_hdmi_probe(struct platform_device *pdev) |
| { |
| struct device_node *np = pdev->dev.of_node; |
| bool hdmi_out = of_property_read_bool(np, "hdmi-out"); |
| bool hdmi_in = of_property_read_bool(np, "hdmi-in"); |
| struct snd_soc_dai_link_component *dlc; |
| struct platform_device *cpu_pdev; |
| struct device_node *cpu_np; |
| struct imx_hdmi_data *data; |
| int ret; |
| |
| dlc = devm_kzalloc(&pdev->dev, 3 * sizeof(*dlc), GFP_KERNEL); |
| if (!dlc) |
| return -ENOMEM; |
| |
| cpu_np = of_parse_phandle(np, "audio-cpu", 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; |
| } |
| |
| data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); |
| if (!data) { |
| ret = -ENOMEM; |
| goto fail; |
| } |
| |
| data->dai.cpus = &dlc[0]; |
| data->dai.num_cpus = 1; |
| data->dai.platforms = &dlc[1]; |
| data->dai.num_platforms = 1; |
| data->dai.codecs = &dlc[2]; |
| data->dai.num_codecs = 1; |
| |
| data->dai.name = "i.MX HDMI"; |
| data->dai.stream_name = "i.MX HDMI"; |
| data->dai.cpus->dai_name = dev_name(&cpu_pdev->dev); |
| data->dai.platforms->of_node = cpu_np; |
| data->dai.ops = &imx_hdmi_ops; |
| data->dai.playback_only = true; |
| data->dai.capture_only = false; |
| data->dai.init = imx_hdmi_init; |
| |
| if (of_node_name_eq(cpu_np, "sai")) { |
| data->cpu_priv.sysclk_id[1] = FSL_SAI_CLK_MAST1; |
| data->cpu_priv.sysclk_id[0] = FSL_SAI_CLK_MAST1; |
| } |
| |
| if (of_device_is_compatible(np, "fsl,imx-audio-sii902x")) { |
| data->dai_fmt = SND_SOC_DAIFMT_LEFT_J; |
| data->cpu_priv.slot_width = 24; |
| } else { |
| data->dai_fmt = SND_SOC_DAIFMT_I2S; |
| data->cpu_priv.slot_width = 32; |
| } |
| |
| if ((hdmi_out && hdmi_in) || (!hdmi_out && !hdmi_in)) { |
| dev_err(&pdev->dev, "Invalid HDMI DAI link\n"); |
| goto fail; |
| } |
| |
| if (hdmi_out) { |
| data->dai.playback_only = true; |
| data->dai.capture_only = false; |
| data->dai.codecs->dai_name = "i2s-hifi"; |
| data->dai.codecs->name = "hdmi-audio-codec.1"; |
| data->dai.dai_fmt = data->dai_fmt | |
| SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBS_CFS; |
| } |
| |
| if (hdmi_in) { |
| data->dai.playback_only = false; |
| data->dai.capture_only = true; |
| data->dai.codecs->dai_name = "i2s-hifi"; |
| data->dai.codecs->name = "hdmi-audio-codec.2"; |
| data->dai.dai_fmt = data->dai_fmt | |
| SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBM_CFM; |
| } |
| |
| data->card.dapm_widgets = imx_hdmi_widgets; |
| data->card.num_dapm_widgets = ARRAY_SIZE(imx_hdmi_widgets); |
| 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.num_links = 1; |
| data->card.dai_link = &data->dai; |
| |
| 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; |
| } |
| |
| fail: |
| if (cpu_np) |
| of_node_put(cpu_np); |
| |
| return ret; |
| } |
| |
| static const struct of_device_id imx_hdmi_dt_ids[] = { |
| { .compatible = "fsl,imx-audio-hdmi", }, |
| { .compatible = "fsl,imx-audio-sii902x", }, |
| { /* sentinel */ } |
| }; |
| MODULE_DEVICE_TABLE(of, imx_hdmi_dt_ids); |
| |
| static struct platform_driver imx_hdmi_driver = { |
| .driver = { |
| .name = "imx-hdmi", |
| .owner = THIS_MODULE, |
| .pm = &snd_soc_pm_ops, |
| .of_match_table = imx_hdmi_dt_ids, |
| }, |
| .probe = imx_hdmi_probe, |
| }; |
| module_platform_driver(imx_hdmi_driver); |
| |
| MODULE_AUTHOR("Freescale Semiconductor, Inc."); |
| MODULE_DESCRIPTION("Freescale i.MX hdmi audio ASoC machine driver"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_ALIAS("platform:imx-hdmi"); |