// SPDX-License-Identifier: GPL-2.0 // Copyright 2017-2020 NXP #include #include #include #include #include #include "fsl_sai.h" /** * struct cpu_priv - CPU private data * @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 { 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 const 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_pins(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 != -ENOTSUPP) { 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; put_device(&cpu_pdev->dev); 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"); ret = -EINVAL; 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_CBC_CFC; } 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_CBP_CFP; } 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", .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");