1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * sam9x5_wm8731   --	SoC audio for AT91SAM9X5-based boards
12  * Based on sam9g20_wm8731.c by:
23 #include <sound/soc-dai.h>
24 #include <sound/soc-dapm.h>
32 #define DRV_NAME "sam9x5-snd-wm8731"
39  * Logic for a wm8731 as connected on a at91sam9x5ek based board.
44 	struct device *dev = rtd->dev;  in sam9x5_wm8731_init()
61  * Audio paths on at91sam9x5ek board:
63  *  |A| ------------> |      | ---R----> Headphone Jack
64  *  |T| <----\        |  WM  | ---L--/
65  *  |9| ---> CLK <--> | 8731 | <--R----- Line In Jack
66  *  |1| <------------ |      | <--L--/
75 	struct device_node *np = pdev->dev.of_node;  in sam9x5_wm8731_driver_probe()
84 		dev_err(&pdev->dev, "No device node supplied\n");  in sam9x5_wm8731_driver_probe()
85 		return -EINVAL;  in sam9x5_wm8731_driver_probe()
88 	card = devm_kzalloc(&pdev->dev, sizeof(*card), GFP_KERNEL);  in sam9x5_wm8731_driver_probe()
89 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);  in sam9x5_wm8731_driver_probe()
90 	dai = devm_kzalloc(&pdev->dev, sizeof(*dai), GFP_KERNEL);  in sam9x5_wm8731_driver_probe()
91 	comp = devm_kzalloc(&pdev->dev, 3 * sizeof(*comp), GFP_KERNEL);  in sam9x5_wm8731_driver_probe()
93 		ret = -ENOMEM;  in sam9x5_wm8731_driver_probe()
99 	card->dev = &pdev->dev;  in sam9x5_wm8731_driver_probe()
100 	card->owner = THIS_MODULE;  in sam9x5_wm8731_driver_probe()
101 	card->dai_link = dai;  in sam9x5_wm8731_driver_probe()
102 	card->num_links = 1;  in sam9x5_wm8731_driver_probe()
103 	card->dapm_widgets = sam9x5_dapm_widgets;  in sam9x5_wm8731_driver_probe()
104 	card->num_dapm_widgets = ARRAY_SIZE(sam9x5_dapm_widgets);  in sam9x5_wm8731_driver_probe()
106 	dai->cpus = &comp[0];  in sam9x5_wm8731_driver_probe()
107 	dai->num_cpus = 1;  in sam9x5_wm8731_driver_probe()
108 	dai->codecs = &comp[1];  in sam9x5_wm8731_driver_probe()
109 	dai->num_codecs = 1;  in sam9x5_wm8731_driver_probe()
110 	dai->platforms = &comp[2];  in sam9x5_wm8731_driver_probe()
111 	dai->num_platforms = 1;  in sam9x5_wm8731_driver_probe()
113 	dai->name = "WM8731";  in sam9x5_wm8731_driver_probe()
114 	dai->stream_name = "WM8731 PCM";  in sam9x5_wm8731_driver_probe()
115 	dai->codecs->dai_name = "wm8731-hifi";  in sam9x5_wm8731_driver_probe()
116 	dai->init = sam9x5_wm8731_init;  in sam9x5_wm8731_driver_probe()
117 	dai->dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF  in sam9x5_wm8731_driver_probe()
122 		dev_err(&pdev->dev, "atmel,model node missing\n");  in sam9x5_wm8731_driver_probe()
126 	ret = snd_soc_of_parse_audio_routing(card, "atmel,audio-routing");  in sam9x5_wm8731_driver_probe()
128 		dev_err(&pdev->dev, "atmel,audio-routing node missing\n");  in sam9x5_wm8731_driver_probe()
132 	codec_np = of_parse_phandle(np, "atmel,audio-codec", 0);  in sam9x5_wm8731_driver_probe()
134 		dev_err(&pdev->dev, "atmel,audio-codec node missing\n");  in sam9x5_wm8731_driver_probe()
135 		ret = -EINVAL;  in sam9x5_wm8731_driver_probe()
139 	dai->codecs->of_node = codec_np;  in sam9x5_wm8731_driver_probe()
141 	cpu_np = of_parse_phandle(np, "atmel,ssc-controller", 0);  in sam9x5_wm8731_driver_probe()
143 		dev_err(&pdev->dev, "atmel,ssc-controller node missing\n");  in sam9x5_wm8731_driver_probe()
144 		ret = -EINVAL;  in sam9x5_wm8731_driver_probe()
147 	dai->cpus->of_node = cpu_np;  in sam9x5_wm8731_driver_probe()
148 	dai->platforms->of_node = cpu_np;  in sam9x5_wm8731_driver_probe()
150 	priv->ssc_id = of_alias_get_id(cpu_np, "ssc");  in sam9x5_wm8731_driver_probe()
152 	ret = atmel_ssc_set_audio(priv->ssc_id);  in sam9x5_wm8731_driver_probe()
154 		dev_err(&pdev->dev, "Failed to set SSC %d for audio: %d\n",  in sam9x5_wm8731_driver_probe()
155 			ret, priv->ssc_id);  in sam9x5_wm8731_driver_probe()
159 	ret = devm_snd_soc_register_card(&pdev->dev, card);  in sam9x5_wm8731_driver_probe()
161 		dev_err(&pdev->dev, "Platform device allocation failed\n");  in sam9x5_wm8731_driver_probe()
165 	dev_dbg(&pdev->dev, "%s ok\n", __func__);  in sam9x5_wm8731_driver_probe()
170 	atmel_ssc_put_audio(priv->ssc_id);  in sam9x5_wm8731_driver_probe()
182 	struct sam9x5_drvdata *priv = card->drvdata;  in sam9x5_wm8731_driver_remove()
184 	atmel_ssc_put_audio(priv->ssc_id);  in sam9x5_wm8731_driver_remove()
188 	{ .compatible = "atmel,sam9x5-wm8731-audio", },
206 MODULE_DESCRIPTION("ALSA SoC machine driver for AT91SAM9x5 - WM8731");