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