Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) // ASoC machine driver for Snow boards
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <sound/pcm_params.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <sound/soc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include "i2s.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #define FIN_PLL_RATE		24000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) SND_SOC_DAILINK_DEFS(links,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 	DAILINK_COMP_ARRAY(COMP_EMPTY()),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	DAILINK_COMP_ARRAY(COMP_EMPTY()),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	DAILINK_COMP_ARRAY(COMP_EMPTY()));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) struct snow_priv {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	struct snd_soc_dai_link dai_link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	struct clk *clk_i2s_bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) static int snow_card_hw_params(struct snd_pcm_substream *substream,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 				      struct snd_pcm_hw_params *params)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	static const unsigned int pll_rate[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 		73728000U, 67737602U, 49152000U, 45158401U, 32768001U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	struct snow_priv *priv = snd_soc_card_get_drvdata(rtd->card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	int bfs, psr, rfs, bitwidth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	unsigned long int rclk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	long int freq = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	bitwidth = snd_pcm_format_width(params_format(params));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	if (bitwidth < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 		dev_err(rtd->card->dev, "Invalid bit-width: %d\n", bitwidth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 		return bitwidth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	if (bitwidth != 16 && bitwidth != 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 		dev_err(rtd->card->dev, "Unsupported bit-width: %d\n", bitwidth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	bfs = 2 * bitwidth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	switch (params_rate(params)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	case 16000:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	case 22050:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	case 24000:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	case 32000:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	case 44100:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	case 48000:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	case 88200:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	case 96000:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		rfs = 8 * bfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	case 64000:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 		rfs = 384;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	case 8000:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	case 11025:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	case 12000:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		rfs = 16 * bfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	rclk = params_rate(params) * rfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	for (psr = 8; psr > 0; psr /= 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		for (i = 0; i < ARRAY_SIZE(pll_rate); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 			if ((pll_rate[i] - rclk * psr) <= 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 				freq = pll_rate[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 				break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	if (freq < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 		dev_err(rtd->card->dev, "Unsupported RCLK rate: %lu\n", rclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	ret = clk_set_rate(priv->clk_i2s_bus, freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		dev_err(rtd->card->dev, "I2S bus clock rate set failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static const struct snd_soc_ops snow_card_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	.hw_params = snow_card_hw_params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static int snow_late_probe(struct snd_soc_card *card)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	struct snd_soc_pcm_runtime *rtd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	struct snd_soc_dai *codec_dai;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	/* In the multi-codec case codec_dais 0 is MAX98095 and 1 is HDMI. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	if (rtd->num_codecs > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		codec_dai = asoc_rtd_to_codec(rtd, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 		codec_dai = asoc_rtd_to_codec(rtd, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	/* Set the MCLK rate for the codec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	return snd_soc_dai_set_sysclk(codec_dai, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 				FIN_PLL_RATE, SND_SOC_CLOCK_IN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static struct snd_soc_card snow_snd = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	.name = "Snow-I2S",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	.owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	.late_probe = snow_late_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) static int snow_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	struct snd_soc_card *card = &snow_snd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	struct device_node *cpu, *codec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	struct snd_soc_dai_link *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	struct snow_priv *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	if (!priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	link = &priv->dai_link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	link->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 			SND_SOC_DAIFMT_CBS_CFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	link->name = "Primary";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	link->stream_name = link->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	link->cpus = links_cpus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	link->num_cpus = ARRAY_SIZE(links_cpus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	link->codecs = links_codecs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	link->num_codecs = ARRAY_SIZE(links_codecs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	link->platforms = links_platforms;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	link->num_platforms = ARRAY_SIZE(links_platforms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	card->dai_link = link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	card->num_links = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	card->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	/* Try new DT bindings with HDMI support first. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	cpu = of_get_child_by_name(dev->of_node, "cpu");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	if (cpu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		link->ops = &snow_card_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		link->cpus->of_node = of_parse_phandle(cpu, "sound-dai", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		of_node_put(cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		if (!link->cpus->of_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 			dev_err(dev, "Failed parsing cpu/sound-dai property\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		codec = of_get_child_by_name(dev->of_node, "codec");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		ret = snd_soc_of_get_dai_link_codecs(dev, codec, link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		of_node_put(codec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 			of_node_put(link->cpus->of_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 			dev_err(dev, "Failed parsing codec node\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		priv->clk_i2s_bus = of_clk_get_by_name(link->cpus->of_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 						       "i2s_opclk0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		if (IS_ERR(priv->clk_i2s_bus)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 			snd_soc_of_put_dai_link_codecs(link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 			of_node_put(link->cpus->of_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 			return PTR_ERR(priv->clk_i2s_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		link->codecs->dai_name = "HiFi",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 		link->cpus->of_node = of_parse_phandle(dev->of_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 						"samsung,i2s-controller", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 		if (!link->cpus->of_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 			dev_err(dev, "i2s-controller property parse error\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		link->codecs->of_node = of_parse_phandle(dev->of_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 						"samsung,audio-codec", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		if (!link->codecs->of_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 			of_node_put(link->cpus->of_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 			dev_err(dev, "audio-codec property parse error\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	link->platforms->of_node = link->cpus->of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	/* Update card-name if provided through DT, else use default name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	snd_soc_of_parse_card_name(card, "samsung,model");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	snd_soc_card_set_drvdata(card, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	ret = devm_snd_soc_register_card(dev, card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		if (ret != -EPROBE_DEFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 			dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 				"snd_soc_register_card failed (%d)\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static int snow_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	struct snow_priv *priv = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	struct snd_soc_dai_link *link = &priv->dai_link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	of_node_put(link->cpus->of_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	of_node_put(link->codecs->of_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	snd_soc_of_put_dai_link_codecs(link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	clk_put(priv->clk_i2s_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) static const struct of_device_id snow_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	{ .compatible = "google,snow-audio-max98090", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	{ .compatible = "google,snow-audio-max98091", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	{ .compatible = "google,snow-audio-max98095", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	{},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) MODULE_DEVICE_TABLE(of, snow_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static struct platform_driver snow_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		.name = "snow-audio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		.pm = &snd_soc_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		.of_match_table = snow_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	.probe = snow_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	.remove = snow_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) module_platform_driver(snow_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) MODULE_DESCRIPTION("ALSA SoC Audio machine driver for Snow");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) MODULE_LICENSE("GPL");