/*
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* Rockchip machine ASoC driver for boards using CDN DP
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*
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* Copyright (c) 2016, ROCKCHIP CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/module.h>
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#include <linux/input.h>
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#include <sound/jack.h>
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#include <sound/hdmi-codec.h>
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#include <sound/soc.h>
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#define DRV_NAME "rockchip-cdndp-sound"
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static int rockchip_sound_cdndp_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 snd_soc_dai *cpu_dai = rtd->cpu_dai;
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int mclk, ret;
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/* in bypass mode, the mclk has to be one of the frequencies below */
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switch (params_rate(params)) {
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case 8000:
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case 16000:
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case 24000:
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case 32000:
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case 48000:
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case 64000:
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case 96000:
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mclk = 12288000;
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break;
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case 11025:
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case 22050:
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case 44100:
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case 88200:
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mclk = 11289600;
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break;
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case 176400:
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mclk = 11289600 * 2;
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break;
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case 192000:
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mclk = 12288000 * 2;
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break;
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default:
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return -EINVAL;
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}
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ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
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SND_SOC_CLOCK_OUT);
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if (ret && ret != -ENOTSUPP) {
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dev_err(cpu_dai->dev, "Can't set cpu clock %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 struct snd_soc_jack cdn_dp_card_jack;
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static int rockchip_sound_cdndp_init(struct snd_soc_pcm_runtime *runtime)
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{
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struct snd_soc_card *card = runtime->card;
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struct snd_soc_codec *codec = runtime->codec;
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int ret;
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/* enable jack detection */
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ret = snd_soc_card_jack_new(card, "DP Jack", SND_JACK_LINEOUT,
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&cdn_dp_card_jack, NULL, 0);
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if (ret) {
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dev_err(card->dev, "Can't create DP Jack %d\n", ret);
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return ret;
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}
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return hdmi_codec_set_jack_detect(codec, &cdn_dp_card_jack);
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}
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static struct snd_soc_ops rockchip_sound_cdndp_ops = {
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.hw_params = rockchip_sound_cdndp_hw_params,
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};
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static struct snd_soc_dai_link cdndp_dailink = {
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.name = "DP",
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.stream_name = "DP PCM",
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.codec_dai_name = "spdif-hifi",
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.init = rockchip_sound_cdndp_init,
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.ops = &rockchip_sound_cdndp_ops,
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS,
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};
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static struct snd_soc_card rockchip_sound_card = {
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.name = "rockchip-cdndp-sound",
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.owner = THIS_MODULE,
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.dai_link = &cdndp_dailink,
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.num_links = 1,
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};
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static int rockchip_sound_probe(struct platform_device *pdev)
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{
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struct snd_soc_card *card = &rockchip_sound_card;
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struct device_node *cpu_node;
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int ret;
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cpu_node = of_parse_phandle(pdev->dev.of_node, "rockchip,cpu", 0);
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if (!cpu_node) {
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dev_err(&pdev->dev, "Property 'rockchip,cpu' missing or invalid\n");
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return -EINVAL;
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}
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cdndp_dailink.platform_of_node = cpu_node;
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cdndp_dailink.cpu_of_node = cpu_node;
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cdndp_dailink.codec_of_node = of_parse_phandle(pdev->dev.of_node,
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"rockchip,codec", 0);
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if (!cdndp_dailink.codec_of_node) {
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dev_err(&pdev->dev, "Property 'rockchip,codec' invalid\n");
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return -EINVAL;
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}
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card->dev = &pdev->dev;
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platform_set_drvdata(pdev, card);
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ret = devm_snd_soc_register_card(&pdev->dev, card);
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if (ret)
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dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
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__func__, ret);
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return ret;
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}
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static const struct of_device_id rockchip_sound_of_match[] = {
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{ .compatible = "rockchip,cdndp-sound", },
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{},
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};
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static struct platform_driver rockchip_sound_driver = {
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.probe = rockchip_sound_probe,
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.driver = {
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.name = DRV_NAME,
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.of_match_table = rockchip_sound_of_match,
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#ifdef CONFIG_PM
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.pm = &snd_soc_pm_ops,
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#endif
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},
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};
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module_platform_driver(rockchip_sound_driver);
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MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
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MODULE_DESCRIPTION("Rockchip CDN DP Machine Driver");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:" DRV_NAME);
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MODULE_DEVICE_TABLE(of, rockchip_sound_of_match);
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