1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Rockchip machine ASoC driver for RK3288 boards that have an HDMI and analog
4 * audio output
5 *
6 * Copyright (c) 2016, Collabora Ltd.
7 *
8 * Authors: Sjoerd Simons <sjoerd.simons@collabora.com>,
9 *	    Romain Perier <romain.perier@collabora.com>
10 */
11
12#include <linux/module.h>
13#include <linux/platform_device.h>
14#include <linux/slab.h>
15#include <linux/gpio.h>
16#include <linux/of_gpio.h>
17#include <sound/core.h>
18#include <sound/jack.h>
19#include <sound/pcm.h>
20#include <sound/pcm_params.h>
21#include <sound/soc.h>
22#include <sound/soc-dapm.h>
23
24#include "rockchip_i2s.h"
25
26#define DRV_NAME "rk3288-snd-hdmi-analog"
27
28struct rk_drvdata {
29	int gpio_hp_en;
30	int gpio_hp_det;
31};
32
33static int rk_hp_power(struct snd_soc_dapm_widget *w,
34		       struct snd_kcontrol *k, int event)
35{
36	struct rk_drvdata *machine = snd_soc_card_get_drvdata(w->dapm->card);
37
38	if (!gpio_is_valid(machine->gpio_hp_en))
39		return 0;
40
41	gpio_set_value_cansleep(machine->gpio_hp_en,
42				SND_SOC_DAPM_EVENT_ON(event));
43
44	return 0;
45}
46
47static struct snd_soc_jack headphone_jack;
48static struct snd_soc_jack_pin headphone_jack_pins[] = {
49	{
50		.pin = "Analog",
51		.mask = SND_JACK_HEADPHONE
52	},
53};
54
55static const struct snd_soc_dapm_widget rk_dapm_widgets[] = {
56	SND_SOC_DAPM_HP("Analog", rk_hp_power),
57	SND_SOC_DAPM_LINE("HDMI", NULL),
58};
59
60static const struct snd_kcontrol_new rk_mc_controls[] = {
61	SOC_DAPM_PIN_SWITCH("Analog"),
62	SOC_DAPM_PIN_SWITCH("HDMI"),
63};
64
65static int rk_hw_params(struct snd_pcm_substream *substream,
66			struct snd_pcm_hw_params *params)
67{
68	int ret = 0;
69	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
70	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
71	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
72	int mclk;
73
74	switch (params_rate(params)) {
75	case 8000:
76	case 16000:
77	case 24000:
78	case 32000:
79	case 48000:
80	case 64000:
81	case 96000:
82		mclk = 12288000;
83		break;
84	case 192000:
85		mclk = 24576000;
86		break;
87	case 11025:
88	case 22050:
89	case 44100:
90	case 88200:
91		mclk = 11289600;
92		break;
93	default:
94		return -EINVAL;
95	}
96
97	ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
98				     SND_SOC_CLOCK_OUT);
99
100	if (ret && ret != -ENOTSUPP) {
101		dev_err(codec_dai->dev, "Can't set cpu clock %d\n", ret);
102		return ret;
103	}
104
105	ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
106				     SND_SOC_CLOCK_IN);
107	if (ret && ret != -ENOTSUPP) {
108		dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
109		return ret;
110	}
111
112	return 0;
113}
114
115static struct snd_soc_jack_gpio rk_hp_jack_gpio = {
116	.name = "Headphone detection",
117	.report = SND_JACK_HEADPHONE,
118	.debounce_time = 150
119};
120
121static int rk_init(struct snd_soc_pcm_runtime *runtime)
122{
123	struct rk_drvdata *machine = snd_soc_card_get_drvdata(runtime->card);
124
125	/* Enable Headset Jack detection */
126	if (gpio_is_valid(machine->gpio_hp_det)) {
127		snd_soc_card_jack_new(runtime->card, "Headphone Jack",
128				      SND_JACK_HEADPHONE, &headphone_jack,
129				      headphone_jack_pins,
130				      ARRAY_SIZE(headphone_jack_pins));
131		rk_hp_jack_gpio.gpio = machine->gpio_hp_det;
132		snd_soc_jack_add_gpios(&headphone_jack, 1, &rk_hp_jack_gpio);
133	}
134
135	return 0;
136}
137
138static const struct snd_soc_ops rk_ops = {
139	.hw_params = rk_hw_params,
140};
141
142SND_SOC_DAILINK_DEFS(audio,
143	DAILINK_COMP_ARRAY(COMP_EMPTY()),
144	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, NULL),
145			   COMP_CODEC("hdmi-audio-codec.2.auto", "i2s-hifi")),
146	DAILINK_COMP_ARRAY(COMP_EMPTY()));
147
148static struct snd_soc_dai_link rk_dailink = {
149	.name = "Codecs",
150	.stream_name = "Audio",
151	.init = rk_init,
152	.ops = &rk_ops,
153	/* Set codecs as slave */
154	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
155		SND_SOC_DAIFMT_CBS_CFS,
156	SND_SOC_DAILINK_REG(audio),
157};
158
159static struct snd_soc_card snd_soc_card_rk = {
160	.name = "ROCKCHIP-I2S",
161	.dai_link = &rk_dailink,
162	.num_links = 1,
163	.num_aux_devs = 0,
164	.dapm_widgets = rk_dapm_widgets,
165	.num_dapm_widgets = ARRAY_SIZE(rk_dapm_widgets),
166	.controls = rk_mc_controls,
167	.num_controls = ARRAY_SIZE(rk_mc_controls),
168};
169
170static int snd_rk_mc_probe(struct platform_device *pdev)
171{
172	int ret = 0;
173	struct snd_soc_card *card = &snd_soc_card_rk;
174	struct device_node *np = pdev->dev.of_node;
175	struct rk_drvdata *machine;
176	struct of_phandle_args args;
177
178	machine = devm_kzalloc(&pdev->dev, sizeof(struct rk_drvdata),
179			       GFP_KERNEL);
180	if (!machine)
181		return -ENOMEM;
182
183	card->dev = &pdev->dev;
184
185	machine->gpio_hp_det = of_get_named_gpio(np,
186		"rockchip,hp-det-gpios", 0);
187	if (!gpio_is_valid(machine->gpio_hp_det) && machine->gpio_hp_det != -ENODEV)
188		return machine->gpio_hp_det;
189
190	machine->gpio_hp_en = of_get_named_gpio(np,
191		"rockchip,hp-en-gpios", 0);
192	if (!gpio_is_valid(machine->gpio_hp_en) && machine->gpio_hp_en != -ENODEV)
193		return machine->gpio_hp_en;
194
195	if (gpio_is_valid(machine->gpio_hp_en)) {
196		ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en,
197					    GPIOF_OUT_INIT_LOW, "hp_en");
198		if (ret) {
199			dev_err(card->dev, "cannot get hp_en gpio\n");
200			return ret;
201		}
202	}
203
204	ret = snd_soc_of_parse_card_name(card, "rockchip,model");
205	if (ret) {
206		dev_err(card->dev, "SoC parse card name failed %d\n", ret);
207		return ret;
208	}
209
210	rk_dailink.codecs[0].of_node = of_parse_phandle(np,
211							"rockchip,audio-codec",
212							0);
213	if (!rk_dailink.codecs[0].of_node) {
214		dev_err(&pdev->dev,
215			"Property 'rockchip,audio-codec' missing or invalid\n");
216		return -EINVAL;
217	}
218	ret = of_parse_phandle_with_fixed_args(np, "rockchip,audio-codec",
219					       0, 0, &args);
220	if (ret) {
221		dev_err(&pdev->dev,
222			"Unable to parse property 'rockchip,audio-codec'\n");
223		return ret;
224	}
225
226	ret = snd_soc_get_dai_name(&args, &rk_dailink.codecs[0].dai_name);
227	if (ret) {
228		dev_err(&pdev->dev, "Unable to get codec_dai_name\n");
229		return ret;
230	}
231
232	rk_dailink.cpus->of_node = of_parse_phandle(np, "rockchip,i2s-controller",
233						  0);
234	if (!rk_dailink.cpus->of_node) {
235		dev_err(&pdev->dev,
236			"Property 'rockchip,i2s-controller' missing or invalid\n");
237		return -EINVAL;
238	}
239
240	rk_dailink.platforms->of_node = rk_dailink.cpus->of_node;
241
242	ret = snd_soc_of_parse_audio_routing(card, "rockchip,routing");
243	if (ret) {
244		dev_err(&pdev->dev,
245			"Unable to parse 'rockchip,routing' property\n");
246		return ret;
247	}
248
249	snd_soc_card_set_drvdata(card, machine);
250
251	ret = devm_snd_soc_register_card(&pdev->dev, card);
252	if (ret == -EPROBE_DEFER)
253		return -EPROBE_DEFER;
254	if (ret) {
255		dev_err(&pdev->dev,
256			"Soc register card failed %d\n", ret);
257		return ret;
258	}
259
260	return ret;
261}
262
263static const struct of_device_id rockchip_sound_of_match[] = {
264	{ .compatible = "rockchip,rk3288-hdmi-analog", },
265	{},
266};
267
268MODULE_DEVICE_TABLE(of, rockchip_sound_of_match);
269
270static struct platform_driver rockchip_sound_driver = {
271	.probe = snd_rk_mc_probe,
272	.driver = {
273		.name = DRV_NAME,
274		.pm = &snd_soc_pm_ops,
275		.of_match_table = rockchip_sound_of_match,
276	},
277};
278
279module_platform_driver(rockchip_sound_driver);
280
281MODULE_AUTHOR("Sjoerd Simons <sjoerd.simons@collabora.com>");
282MODULE_DESCRIPTION("Rockchip RK3288 machine ASoC driver");
283MODULE_LICENSE("GPL v2");
284MODULE_ALIAS("platform:" DRV_NAME);
285