1 // SPDX-License-Identifier: GPL-2.0-only
3 * Rockchip machine ASoC driver for RK3288 boards that have an HDMI and analog
6 * Copyright (c) 2016, Collabora Ltd.
8 * Authors: Sjoerd Simons <sjoerd.simons@collabora.com>,
9 * Romain Perier <romain.perier@collabora.com>
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>
23 #include "rockchip_i2s.h"
25 #define DRV_NAME "rk3288-snd-hdmi-analog"
28 struct gpio_desc *gpio_hp_en;
31 static int rk_hp_power(struct snd_soc_dapm_widget *w,
32 struct snd_kcontrol *k, int event)
34 struct rk_drvdata *machine = snd_soc_card_get_drvdata(w->dapm->card);
36 gpiod_set_value_cansleep(machine->gpio_hp_en,
37 SND_SOC_DAPM_EVENT_ON(event));
42 static struct snd_soc_jack headphone_jack;
43 static struct snd_soc_jack_pin headphone_jack_pins[] = {
46 .mask = SND_JACK_HEADPHONE
50 static 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),
55 static const struct snd_kcontrol_new rk_mc_controls[] = {
56 SOC_DAPM_PIN_SWITCH("Analog"),
57 SOC_DAPM_PIN_SWITCH("HDMI"),
60 static int rk_hw_params(struct snd_pcm_substream *substream,
61 struct snd_pcm_hw_params *params)
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);
69 switch (params_rate(params)) {
92 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
95 if (ret && ret != -ENOTSUPP) {
96 dev_err(codec_dai->dev, "Can't set cpu clock %d\n", ret);
100 ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
102 if (ret && ret != -ENOTSUPP) {
103 dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
110 static struct snd_soc_jack_gpio rk_hp_jack_gpio = {
111 .name = "rockchip,hp-det",
112 .report = SND_JACK_HEADPHONE,
116 static int rk_init(struct snd_soc_pcm_runtime *runtime)
118 struct snd_soc_card *card = runtime->card;
119 struct device *dev = card->dev;
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,
127 ARRAY_SIZE(headphone_jack_pins));
128 snd_soc_jack_add_gpios(&headphone_jack, 1, &rk_hp_jack_gpio);
134 static const struct snd_soc_ops rk_ops = {
135 .hw_params = rk_hw_params,
138 SND_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()));
144 static struct snd_soc_dai_link rk_dailink = {
146 .stream_name = "Audio",
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),
155 static struct snd_soc_card snd_soc_card_rk = {
156 .name = "ROCKCHIP-I2S",
157 .dai_link = &rk_dailink,
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),
166 static int snd_rk_mc_probe(struct platform_device *pdev)
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;
174 machine = devm_kzalloc(&pdev->dev, sizeof(struct rk_drvdata),
179 card->dev = &pdev->dev;
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");
186 ret = snd_soc_of_parse_card_name(card, "rockchip,model");
188 dev_err(card->dev, "SoC parse card name failed %d\n", ret);
192 rk_dailink.codecs[0].of_node = of_parse_phandle(np,
193 "rockchip,audio-codec",
195 if (!rk_dailink.codecs[0].of_node) {
197 "Property 'rockchip,audio-codec' missing or invalid\n");
200 ret = of_parse_phandle_with_fixed_args(np, "rockchip,audio-codec",
204 "Unable to parse property 'rockchip,audio-codec'\n");
208 ret = snd_soc_get_dai_name(&args, &rk_dailink.codecs[0].dai_name);
210 dev_err(&pdev->dev, "Unable to get codec_dai_name\n");
214 rk_dailink.cpus->of_node = of_parse_phandle(np, "rockchip,i2s-controller",
216 if (!rk_dailink.cpus->of_node) {
218 "Property 'rockchip,i2s-controller' missing or invalid\n");
222 rk_dailink.platforms->of_node = rk_dailink.cpus->of_node;
224 ret = snd_soc_of_parse_audio_routing(card, "rockchip,routing");
227 "Unable to parse 'rockchip,routing' property\n");
231 snd_soc_card_set_drvdata(card, machine);
233 ret = devm_snd_soc_register_card(&pdev->dev, card);
235 return dev_err_probe(&pdev->dev, ret,
236 "Soc register card failed\n");
241 static const struct of_device_id rockchip_sound_of_match[] = {
242 { .compatible = "rockchip,rk3288-hdmi-analog", },
246 MODULE_DEVICE_TABLE(of, rockchip_sound_of_match);
248 static struct platform_driver rockchip_sound_driver = {
249 .probe = snd_rk_mc_probe,
252 .pm = &snd_soc_pm_ops,
253 .of_match_table = rockchip_sound_of_match,
257 module_platform_driver(rockchip_sound_driver);
259 MODULE_AUTHOR("Sjoerd Simons <sjoerd.simons@collabora.com>");
260 MODULE_DESCRIPTION("Rockchip RK3288 machine ASoC driver");
261 MODULE_LICENSE("GPL v2");
262 MODULE_ALIAS("platform:" DRV_NAME);