1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Rockchip machine ASoC driver for boards using a RT5645/RT5650 CODEC.
4  *
5  * Copyright (c) 2015, ROCKCHIP CORPORATION.  All rights reserved.
6  */
7 
8 #include <linux/module.h>
9 #include <linux/platform_device.h>
10 #include <linux/slab.h>
11 #include <linux/gpio.h>
12 #include <linux/of_gpio.h>
13 #include <linux/delay.h>
14 #include <sound/core.h>
15 #include <sound/jack.h>
16 #include <sound/pcm.h>
17 #include <sound/pcm_params.h>
18 #include <sound/soc.h>
19 #include "rockchip_i2s.h"
20 #include "../codecs/rt5645.h"
21 
22 #define DRV_NAME "rockchip-snd-rt5645"
23 
24 static struct snd_soc_jack headset_jack;
25 
26 static const struct snd_soc_dapm_widget rk_dapm_widgets[] = {
27 	SND_SOC_DAPM_HP("Headphones", NULL),
28 	SND_SOC_DAPM_SPK("Speakers", NULL),
29 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
30 	SND_SOC_DAPM_MIC("Int Mic", NULL),
31 };
32 
33 static const struct snd_soc_dapm_route rk_audio_map[] = {
34 	/* Input Lines */
35 	{"DMIC L2", NULL, "Int Mic"},
36 	{"DMIC R2", NULL, "Int Mic"},
37 	{"RECMIXL", NULL, "Headset Mic"},
38 	{"RECMIXR", NULL, "Headset Mic"},
39 
40 	/* Output Lines */
41 	{"Headphones", NULL, "HPOR"},
42 	{"Headphones", NULL, "HPOL"},
43 	{"Speakers", NULL, "SPOL"},
44 	{"Speakers", NULL, "SPOR"},
45 };
46 
47 static const struct snd_kcontrol_new rk_mc_controls[] = {
48 	SOC_DAPM_PIN_SWITCH("Headphones"),
49 	SOC_DAPM_PIN_SWITCH("Speakers"),
50 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
51 	SOC_DAPM_PIN_SWITCH("Int Mic"),
52 };
53 
rk_aif1_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)54 static int rk_aif1_hw_params(struct snd_pcm_substream *substream,
55 			     struct snd_pcm_hw_params *params)
56 {
57 	int ret = 0;
58 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
59 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
60 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
61 	int mclk;
62 
63 	switch (params_rate(params)) {
64 	case 8000:
65 	case 16000:
66 	case 24000:
67 	case 32000:
68 	case 48000:
69 	case 64000:
70 	case 96000:
71 		mclk = 12288000;
72 		break;
73 	case 11025:
74 	case 22050:
75 	case 44100:
76 	case 88200:
77 		mclk = 11289600;
78 		break;
79 	default:
80 		return -EINVAL;
81 	}
82 
83 	ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
84 				     SND_SOC_CLOCK_OUT);
85 	if (ret < 0) {
86 		dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
87 		return ret;
88 	}
89 
90 	ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
91 				     SND_SOC_CLOCK_IN);
92 	if (ret < 0) {
93 		dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
94 		return ret;
95 	}
96 
97 	return ret;
98 }
99 
rk_init(struct snd_soc_pcm_runtime * runtime)100 static int rk_init(struct snd_soc_pcm_runtime *runtime)
101 {
102 	struct snd_soc_card *card = runtime->card;
103 	int ret;
104 
105 	/* Enable Headset and 4 Buttons Jack detection */
106 	ret = snd_soc_card_jack_new(card, "Headset Jack",
107 				    SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
108 				    SND_JACK_BTN_0 | SND_JACK_BTN_1 |
109 				    SND_JACK_BTN_2 | SND_JACK_BTN_3,
110 				    &headset_jack);
111 	if (ret) {
112 		dev_err(card->dev, "New Headset Jack failed! (%d)\n", ret);
113 		return ret;
114 	}
115 
116 	return rt5645_set_jack_detect(asoc_rtd_to_codec(runtime, 0)->component,
117 				     &headset_jack,
118 				     &headset_jack,
119 				     &headset_jack);
120 }
121 
122 static const struct snd_soc_ops rk_aif1_ops = {
123 	.hw_params = rk_aif1_hw_params,
124 };
125 
126 SND_SOC_DAILINK_DEFS(pcm,
127 	DAILINK_COMP_ARRAY(COMP_EMPTY()),
128 	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5645-aif1")),
129 	DAILINK_COMP_ARRAY(COMP_EMPTY()));
130 
131 static struct snd_soc_dai_link rk_dailink = {
132 	.name = "rt5645",
133 	.stream_name = "rt5645 PCM",
134 	.init = rk_init,
135 	.ops = &rk_aif1_ops,
136 	/* set rt5645 as slave */
137 	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
138 		SND_SOC_DAIFMT_CBS_CFS,
139 	SND_SOC_DAILINK_REG(pcm),
140 };
141 
142 static struct snd_soc_card snd_soc_card_rk = {
143 	.name = "I2S-RT5650",
144 	.owner = THIS_MODULE,
145 	.dai_link = &rk_dailink,
146 	.num_links = 1,
147 	.dapm_widgets = rk_dapm_widgets,
148 	.num_dapm_widgets = ARRAY_SIZE(rk_dapm_widgets),
149 	.dapm_routes = rk_audio_map,
150 	.num_dapm_routes = ARRAY_SIZE(rk_audio_map),
151 	.controls = rk_mc_controls,
152 	.num_controls = ARRAY_SIZE(rk_mc_controls),
153 };
154 
snd_rk_mc_probe(struct platform_device * pdev)155 static int snd_rk_mc_probe(struct platform_device *pdev)
156 {
157 	int ret = 0;
158 	struct snd_soc_card *card = &snd_soc_card_rk;
159 	struct device_node *np = pdev->dev.of_node;
160 
161 	/* register the soc card */
162 	card->dev = &pdev->dev;
163 
164 	rk_dailink.codecs->of_node = of_parse_phandle(np,
165 			"rockchip,audio-codec", 0);
166 	if (!rk_dailink.codecs->of_node) {
167 		dev_err(&pdev->dev,
168 			"Property 'rockchip,audio-codec' missing or invalid\n");
169 		return -EINVAL;
170 	}
171 
172 	rk_dailink.cpus->of_node = of_parse_phandle(np,
173 			"rockchip,i2s-controller", 0);
174 	if (!rk_dailink.cpus->of_node) {
175 		dev_err(&pdev->dev,
176 			"Property 'rockchip,i2s-controller' missing or invalid\n");
177 		ret = -EINVAL;
178 		goto put_codec_of_node;
179 	}
180 
181 	rk_dailink.platforms->of_node = rk_dailink.cpus->of_node;
182 
183 	ret = snd_soc_of_parse_card_name(card, "rockchip,model");
184 	if (ret) {
185 		dev_err(&pdev->dev,
186 			"Soc parse card name failed %d\n", ret);
187 		goto put_cpu_of_node;
188 	}
189 
190 	ret = devm_snd_soc_register_card(&pdev->dev, card);
191 	if (ret) {
192 		dev_err(&pdev->dev,
193 			"Soc register card failed %d\n", ret);
194 		goto put_cpu_of_node;
195 	}
196 
197 	return ret;
198 
199 put_cpu_of_node:
200 	of_node_put(rk_dailink.cpus->of_node);
201 	rk_dailink.cpus->of_node = NULL;
202 put_codec_of_node:
203 	of_node_put(rk_dailink.codecs->of_node);
204 	rk_dailink.codecs->of_node = NULL;
205 
206 	return ret;
207 }
208 
snd_rk_mc_remove(struct platform_device * pdev)209 static int snd_rk_mc_remove(struct platform_device *pdev)
210 {
211 	of_node_put(rk_dailink.cpus->of_node);
212 	rk_dailink.cpus->of_node = NULL;
213 	of_node_put(rk_dailink.codecs->of_node);
214 	rk_dailink.codecs->of_node = NULL;
215 
216 	return 0;
217 }
218 
219 static const struct of_device_id rockchip_rt5645_of_match[] = {
220 	{ .compatible = "rockchip,rockchip-audio-rt5645", },
221 	{},
222 };
223 
224 MODULE_DEVICE_TABLE(of, rockchip_rt5645_of_match);
225 
226 static struct platform_driver snd_rk_mc_driver = {
227 	.probe = snd_rk_mc_probe,
228 	.remove = snd_rk_mc_remove,
229 	.driver = {
230 		.name = DRV_NAME,
231 		.pm = &snd_soc_pm_ops,
232 		.of_match_table = rockchip_rt5645_of_match,
233 	},
234 };
235 
236 module_platform_driver(snd_rk_mc_driver);
237 
238 MODULE_AUTHOR("Xing Zheng <zhengxing@rock-chips.com>");
239 MODULE_DESCRIPTION("Rockchip rt5645 machine ASoC driver");
240 MODULE_LICENSE("GPL v2");
241 MODULE_ALIAS("platform:" DRV_NAME);
242