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