rk3288_hdmi_analog.c

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