--- /dev/null
+/*
+ * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
+ *
+ * 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/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 "../../../drivers/video/fbdev/mxc/cdn_hdp/API_General.h"
+#include "../../../drivers/video/fbdev/mxc/cdn_hdp/API_Audio.h"
+
+#define SUPPORT_RATE_NUM 10
+#define SUPPORT_CHANNEL_NUM 10
+
+struct imx_cdnhdmi_data {
+ struct snd_soc_dai_link dai;
+ struct snd_soc_card card;
+ int vmode_index;
+};
+
+static int imx_cdnhdmi_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ static struct snd_pcm_hw_constraint_list constraint_rates;
+ static struct snd_pcm_hw_constraint_list constraint_channels;
+ static u32 support_rates[SUPPORT_RATE_NUM];
+ static u32 support_channels[SUPPORT_CHANNEL_NUM];
+ int ret;
+
+ support_rates[0] = 48000;
+ support_rates[1] = 96000;
+ support_rates[2] = 32000;
+ support_rates[3] = 192000;
+ constraint_rates.list = support_rates;
+ constraint_rates.count = 4;
+
+ ret = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+ &constraint_rates);
+ if (ret)
+ return ret;
+
+ support_channels[0] = 2;
+ support_channels[1] = 4;
+ support_channels[2] = 8;
+ constraint_channels.list = support_channels;
+ constraint_channels.count = 3;
+
+ ret = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+ &constraint_channels);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int imx_cdnhdmi_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 *cpu_dai = rtd->cpu_dai;
+ struct snd_soc_card *card = rtd->card;
+ struct imx_cdnhdmi_data *data = snd_soc_card_get_drvdata(card);
+ struct device *dev = card->dev;
+ unsigned int sample_rate = params_rate(params);
+ unsigned int channels = params_channels(params);
+ unsigned int width = params_physical_width(params);
+ AUDIO_FREQ freq;
+ AUDIO_WIDTH bits;
+ int ret;
+ int ncts_n;
+
+ /* set cpu DAI configuration */
+ ret = snd_soc_dai_set_fmt(cpu_dai,
+ SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS);
+ if (ret) {
+ dev_err(dev, "failed to set cpu dai fmt: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_sysclk(cpu_dai, 0, 0, SND_SOC_CLOCK_OUT);
+ if (ret) {
+ 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, 32);
+ if (ret) {
+ dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret);
+ return ret;
+ }
+
+ switch (sample_rate) {
+ case 32000:
+ freq = AUDIO_FREQ_32;
+ ncts_n = data->vmode_index == 95 ? 3072 : 4096;
+ break;
+ case 44100:
+ freq = AUDIO_FREQ_44_1;
+ ncts_n = data->vmode_index == 95 ? 4704 : 6272;
+ break;
+ case 48000:
+ freq = AUDIO_FREQ_48;
+ ncts_n = data->vmode_index == 95 ? 5120 : 6144;
+ break;
+ case 88200:
+ freq = AUDIO_FREQ_88_2;
+ ncts_n = data->vmode_index == 95 ? 9408 : 12544;
+ break;
+ case 96000:
+ freq = AUDIO_FREQ_96;
+ ncts_n = data->vmode_index == 95 ? 10240 : 12288;
+ break;
+ case 176400:
+ freq = AUDIO_FREQ_176_4;
+ ncts_n = data->vmode_index == 95 ? 18816 : 25088;
+ break;
+ case 192000:
+ freq = AUDIO_FREQ_192;
+ ncts_n = data->vmode_index == 95 ? 20480 : 24576;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (width) {
+ case 16:
+ bits = AUDIO_WIDTH_16;
+ break;
+ case 24:
+ bits = AUDIO_WIDTH_24;
+ break;
+ case 32:
+ bits = AUDIO_WIDTH_32;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+
+ CDN_API_AudioOff_blocking(AUDIO_TYPE_I2S);
+ CDN_API_AudioAutoConfig_blocking(AUDIO_TYPE_I2S,
+ channels,
+ freq,
+ 0,
+ bits,
+ CDN_HDMITX_KIRAN,
+ ncts_n,
+ AUDIO_MUTE_MODE_UNMUTE);
+ return 0;
+}
+
+static struct snd_soc_ops imx_cdnhdmi_ops = {
+ .startup = imx_cdnhdmi_startup,
+ .hw_params = imx_cdnhdmi_hw_params,
+};
+
+static int imx_cdnhdmi_probe(struct platform_device *pdev)
+{
+ struct device_node *cpu_np, *cdnhdmi_np = NULL;
+ struct platform_device *cpu_pdev;
+ struct imx_cdnhdmi_data *data;
+ int ret;
+
+ cpu_np = of_parse_phandle(pdev->dev.of_node, "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;
+ }
+
+ ret = of_property_read_u32(pdev->dev.of_node, "video-mode",
+ &data->vmode_index);
+ if (ret < 0) {
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ data->dai.name = "imx8 hdmi";
+ data->dai.stream_name = "imx8 hdmi";
+ data->dai.codec_dai_name = "snd-soc-dummy-dai";
+ data->dai.codec_name = "snd-soc-dummy";
+ data->dai.cpu_dai_name = dev_name(&cpu_pdev->dev);
+ data->dai.platform_of_node = cpu_np;
+ data->dai.ops = &imx_cdnhdmi_ops;
+ data->dai.playback_only = true;
+ data->dai.capture_only = false;
+ data->dai.dai_fmt = SND_SOC_DAIFMT_LEFT_J |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS;
+
+ 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;
+
+ platform_set_drvdata(pdev, &data->card);
+ 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);
+ if (cdnhdmi_np)
+ of_node_put(cdnhdmi_np);
+ return ret;
+}
+
+static const struct of_device_id imx_cdnhdmi_dt_ids[] = {
+ { .compatible = "fsl,imx-audio-cdnhdmi", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx_cdnhdmi_dt_ids);
+
+static struct platform_driver imx_cdnhdmi_driver = {
+ .driver = {
+ .name = "imx-cdnhdmi",
+ .owner = THIS_MODULE,
+ .pm = &snd_soc_pm_ops,
+ .of_match_table = imx_cdnhdmi_dt_ids,
+ },
+ .probe = imx_cdnhdmi_probe,
+};
+module_platform_driver(imx_cdnhdmi_driver);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("Freescale i.MX hdmi audio ASoC machine driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:imx-cdnhdmi");
projects / linux.git / commitdiff