139f8405cSShengjiu Wang // SPDX-License-Identifier: GPL-2.0+
239f8405cSShengjiu Wang // Copyright 2017-2020 NXP
339f8405cSShengjiu Wang
439f8405cSShengjiu Wang #include <linux/module.h>
539f8405cSShengjiu Wang #include <linux/of_platform.h>
639f8405cSShengjiu Wang #include <linux/of_reserved_mem.h>
739f8405cSShengjiu Wang #include <linux/i2c.h>
839f8405cSShengjiu Wang #include <linux/of_gpio.h>
939f8405cSShengjiu Wang #include <linux/slab.h>
1039f8405cSShengjiu Wang #include <linux/gpio.h>
1139f8405cSShengjiu Wang #include <linux/clk.h>
1239f8405cSShengjiu Wang #include <sound/soc.h>
1339f8405cSShengjiu Wang #include <sound/jack.h>
1439f8405cSShengjiu Wang #include <sound/control.h>
1539f8405cSShengjiu Wang #include <sound/pcm_params.h>
1639f8405cSShengjiu Wang #include <sound/soc-dapm.h>
1739f8405cSShengjiu Wang #include "imx-pcm-rpmsg.h"
1839f8405cSShengjiu Wang
1939f8405cSShengjiu Wang struct imx_rpmsg {
2039f8405cSShengjiu Wang struct snd_soc_dai_link dai;
2139f8405cSShengjiu Wang struct snd_soc_card card;
22088f115cSShengjiu Wang unsigned long sysclk;
2339f8405cSShengjiu Wang };
2439f8405cSShengjiu Wang
2539f8405cSShengjiu Wang static const struct snd_soc_dapm_widget imx_rpmsg_dapm_widgets[] = {
2639f8405cSShengjiu Wang SND_SOC_DAPM_HP("Headphone Jack", NULL),
2739f8405cSShengjiu Wang SND_SOC_DAPM_SPK("Ext Spk", NULL),
2839f8405cSShengjiu Wang SND_SOC_DAPM_MIC("Mic Jack", NULL),
2939f8405cSShengjiu Wang SND_SOC_DAPM_MIC("Main MIC", NULL),
3039f8405cSShengjiu Wang };
3139f8405cSShengjiu Wang
imx_rpmsg_late_probe(struct snd_soc_card * card)32088f115cSShengjiu Wang static int imx_rpmsg_late_probe(struct snd_soc_card *card)
33088f115cSShengjiu Wang {
34088f115cSShengjiu Wang struct imx_rpmsg *data = snd_soc_card_get_drvdata(card);
35088f115cSShengjiu Wang struct snd_soc_pcm_runtime *rtd = list_first_entry(&card->rtd_list,
36088f115cSShengjiu Wang struct snd_soc_pcm_runtime, list);
37088f115cSShengjiu Wang struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
38088f115cSShengjiu Wang struct device *dev = card->dev;
39088f115cSShengjiu Wang int ret;
40088f115cSShengjiu Wang
41088f115cSShengjiu Wang if (!data->sysclk)
42088f115cSShengjiu Wang return 0;
43088f115cSShengjiu Wang
44088f115cSShengjiu Wang ret = snd_soc_dai_set_sysclk(codec_dai, 0, data->sysclk, SND_SOC_CLOCK_IN);
45088f115cSShengjiu Wang if (ret && ret != -ENOTSUPP) {
46088f115cSShengjiu Wang dev_err(dev, "failed to set sysclk in %s\n", __func__);
47088f115cSShengjiu Wang return ret;
48088f115cSShengjiu Wang }
49088f115cSShengjiu Wang
50088f115cSShengjiu Wang return 0;
51088f115cSShengjiu Wang }
52088f115cSShengjiu Wang
imx_rpmsg_probe(struct platform_device * pdev)5339f8405cSShengjiu Wang static int imx_rpmsg_probe(struct platform_device *pdev)
5439f8405cSShengjiu Wang {
5539f8405cSShengjiu Wang struct snd_soc_dai_link_component *dlc;
5639f8405cSShengjiu Wang struct device *dev = pdev->dev.parent;
5739f8405cSShengjiu Wang /* rpmsg_pdev is the platform device for the rpmsg node that probed us */
5839f8405cSShengjiu Wang struct platform_device *rpmsg_pdev = to_platform_device(dev);
5939f8405cSShengjiu Wang struct device_node *np = rpmsg_pdev->dev.of_node;
6039f8405cSShengjiu Wang struct of_phandle_args args;
614b48440eSChancel Liu const char *platform_name;
6239f8405cSShengjiu Wang struct imx_rpmsg *data;
6339f8405cSShengjiu Wang int ret = 0;
6439f8405cSShengjiu Wang
6539f8405cSShengjiu Wang dlc = devm_kzalloc(&pdev->dev, 3 * sizeof(*dlc), GFP_KERNEL);
6639f8405cSShengjiu Wang if (!dlc)
6739f8405cSShengjiu Wang return -ENOMEM;
6839f8405cSShengjiu Wang
6939f8405cSShengjiu Wang data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
7039f8405cSShengjiu Wang if (!data) {
7139f8405cSShengjiu Wang ret = -ENOMEM;
7239f8405cSShengjiu Wang goto fail;
7339f8405cSShengjiu Wang }
7439f8405cSShengjiu Wang
7539f8405cSShengjiu Wang ret = of_reserved_mem_device_init_by_idx(&pdev->dev, np, 0);
7639f8405cSShengjiu Wang if (ret)
7739f8405cSShengjiu Wang dev_warn(&pdev->dev, "no reserved DMA memory\n");
7839f8405cSShengjiu Wang
7939f8405cSShengjiu Wang data->dai.cpus = &dlc[0];
8039f8405cSShengjiu Wang data->dai.num_cpus = 1;
8139f8405cSShengjiu Wang data->dai.platforms = &dlc[1];
8239f8405cSShengjiu Wang data->dai.num_platforms = 1;
8339f8405cSShengjiu Wang data->dai.codecs = &dlc[2];
8439f8405cSShengjiu Wang data->dai.num_codecs = 1;
8539f8405cSShengjiu Wang
8639f8405cSShengjiu Wang data->dai.name = "rpmsg hifi";
8739f8405cSShengjiu Wang data->dai.stream_name = "rpmsg hifi";
8839f8405cSShengjiu Wang data->dai.dai_fmt = SND_SOC_DAIFMT_I2S |
8939f8405cSShengjiu Wang SND_SOC_DAIFMT_NB_NF |
90caa0a607SMark Brown SND_SOC_DAIFMT_CBC_CFC;
9139f8405cSShengjiu Wang
92*fac58bafSChancel Liu /*
93*fac58bafSChancel Liu * i.MX rpmsg sound cards work on codec slave mode. MCLK will be
94*fac58bafSChancel Liu * disabled by CPU DAI driver in hw_free(). Some codec requires MCLK
95*fac58bafSChancel Liu * present at power up/down sequence. So need to set ignore_pmdown_time
96*fac58bafSChancel Liu * to power down codec immediately before MCLK is turned off.
97*fac58bafSChancel Liu */
98*fac58bafSChancel Liu data->dai.ignore_pmdown_time = 1;
99*fac58bafSChancel Liu
10039f8405cSShengjiu Wang /* Optional codec node */
10139f8405cSShengjiu Wang ret = of_parse_phandle_with_fixed_args(np, "audio-codec", 0, 0, &args);
10239f8405cSShengjiu Wang if (ret) {
10387e39e9bSKuninori Morimoto *data->dai.codecs = asoc_dummy_dlc;
10439f8405cSShengjiu Wang } else {
105088f115cSShengjiu Wang struct clk *clk;
106088f115cSShengjiu Wang
107aa560f5eSKuninori Morimoto ret = snd_soc_get_dlc(&args, data->dai.codecs);
10839f8405cSShengjiu Wang if (ret) {
10939f8405cSShengjiu Wang dev_err(&pdev->dev, "Unable to get codec_dai_name\n");
11039f8405cSShengjiu Wang goto fail;
11139f8405cSShengjiu Wang }
112088f115cSShengjiu Wang
113088f115cSShengjiu Wang clk = devm_get_clk_from_child(&pdev->dev, args.np, NULL);
114088f115cSShengjiu Wang if (!IS_ERR(clk))
115088f115cSShengjiu Wang data->sysclk = clk_get_rate(clk);
11639f8405cSShengjiu Wang }
11739f8405cSShengjiu Wang
11839f8405cSShengjiu Wang data->dai.cpus->dai_name = dev_name(&rpmsg_pdev->dev);
1194b48440eSChancel Liu if (!of_property_read_string(np, "fsl,rpmsg-channel-name", &platform_name))
1204b48440eSChancel Liu data->dai.platforms->name = platform_name;
1214b48440eSChancel Liu else
1224b48440eSChancel Liu data->dai.platforms->name = "rpmsg-audio-channel";
12339f8405cSShengjiu Wang data->dai.playback_only = true;
12439f8405cSShengjiu Wang data->dai.capture_only = true;
12539f8405cSShengjiu Wang data->card.num_links = 1;
12639f8405cSShengjiu Wang data->card.dai_link = &data->dai;
12739f8405cSShengjiu Wang
12839f8405cSShengjiu Wang if (of_property_read_bool(np, "fsl,rpmsg-out"))
12939f8405cSShengjiu Wang data->dai.capture_only = false;
13039f8405cSShengjiu Wang
13139f8405cSShengjiu Wang if (of_property_read_bool(np, "fsl,rpmsg-in"))
13239f8405cSShengjiu Wang data->dai.playback_only = false;
13339f8405cSShengjiu Wang
13439f8405cSShengjiu Wang if (data->dai.playback_only && data->dai.capture_only) {
13539f8405cSShengjiu Wang dev_err(&pdev->dev, "no enabled rpmsg DAI link\n");
13639f8405cSShengjiu Wang ret = -EINVAL;
13739f8405cSShengjiu Wang goto fail;
13839f8405cSShengjiu Wang }
13939f8405cSShengjiu Wang
14039f8405cSShengjiu Wang data->card.dev = &pdev->dev;
14139f8405cSShengjiu Wang data->card.owner = THIS_MODULE;
14239f8405cSShengjiu Wang data->card.dapm_widgets = imx_rpmsg_dapm_widgets;
14339f8405cSShengjiu Wang data->card.num_dapm_widgets = ARRAY_SIZE(imx_rpmsg_dapm_widgets);
144088f115cSShengjiu Wang data->card.late_probe = imx_rpmsg_late_probe;
14539f8405cSShengjiu Wang /*
14639f8405cSShengjiu Wang * Inoder to use common api to get card name and audio routing.
14739f8405cSShengjiu Wang * Use parent of_node for this device, revert it after finishing using
14839f8405cSShengjiu Wang */
14939f8405cSShengjiu Wang data->card.dev->of_node = np;
15039f8405cSShengjiu Wang
15139f8405cSShengjiu Wang ret = snd_soc_of_parse_card_name(&data->card, "model");
15239f8405cSShengjiu Wang if (ret)
15339f8405cSShengjiu Wang goto fail;
15439f8405cSShengjiu Wang
15539f8405cSShengjiu Wang if (of_property_read_bool(np, "audio-routing")) {
15639f8405cSShengjiu Wang ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
15739f8405cSShengjiu Wang if (ret) {
15839f8405cSShengjiu Wang dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
15939f8405cSShengjiu Wang goto fail;
16039f8405cSShengjiu Wang }
16139f8405cSShengjiu Wang }
16239f8405cSShengjiu Wang
16339f8405cSShengjiu Wang platform_set_drvdata(pdev, &data->card);
16439f8405cSShengjiu Wang snd_soc_card_set_drvdata(&data->card, data);
16539f8405cSShengjiu Wang ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
16639f8405cSShengjiu Wang if (ret) {
167a8946f03SShengjiu Wang dev_err_probe(&pdev->dev, ret, "snd_soc_register_card failed\n");
16839f8405cSShengjiu Wang goto fail;
16939f8405cSShengjiu Wang }
17039f8405cSShengjiu Wang
17139f8405cSShengjiu Wang fail:
17239f8405cSShengjiu Wang pdev->dev.of_node = NULL;
17339f8405cSShengjiu Wang return ret;
17439f8405cSShengjiu Wang }
17539f8405cSShengjiu Wang
17639f8405cSShengjiu Wang static struct platform_driver imx_rpmsg_driver = {
17739f8405cSShengjiu Wang .driver = {
17839f8405cSShengjiu Wang .name = "imx-audio-rpmsg",
17939f8405cSShengjiu Wang .pm = &snd_soc_pm_ops,
18039f8405cSShengjiu Wang },
18139f8405cSShengjiu Wang .probe = imx_rpmsg_probe,
18239f8405cSShengjiu Wang };
18339f8405cSShengjiu Wang module_platform_driver(imx_rpmsg_driver);
18439f8405cSShengjiu Wang
18539f8405cSShengjiu Wang MODULE_DESCRIPTION("Freescale SoC Audio RPMSG Machine Driver");
18639f8405cSShengjiu Wang MODULE_AUTHOR("Shengjiu Wang <shengjiu.wang@nxp.com>");
18739f8405cSShengjiu Wang MODULE_ALIAS("platform:imx-audio-rpmsg");
18839f8405cSShengjiu Wang MODULE_LICENSE("GPL v2");
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