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.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>
24 #include "rockchip_i2s.h"
26 #define DRV_NAME "rk3288-snd-hdmi-analog"
33 static int rk_hp_power(struct snd_soc_dapm_widget *w,
34 struct snd_kcontrol *k, int event)
36 struct rk_drvdata *machine = snd_soc_card_get_drvdata(w->dapm->card);
38 if (!gpio_is_valid(machine->gpio_hp_en))
41 gpio_set_value_cansleep(machine->gpio_hp_en,
42 SND_SOC_DAPM_EVENT_ON(event));
47 static struct snd_soc_jack headphone_jack;
48 static struct snd_soc_jack_pin headphone_jack_pins[] = {
51 .mask = SND_JACK_HEADPHONE
55 static 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),
60 static const struct snd_kcontrol_new rk_mc_controls[] = {
61 SOC_DAPM_PIN_SWITCH("Analog"),
62 SOC_DAPM_PIN_SWITCH("HDMI"),
65 static int rk_hw_params(struct snd_pcm_substream *substream,
66 struct snd_pcm_hw_params *params)
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);
74 switch (params_rate(params)) {
97 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
100 if (ret && ret != -ENOTSUPP) {
101 dev_err(codec_dai->dev, "Can't set cpu clock %d\n", ret);
105 ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
107 if (ret && ret != -ENOTSUPP) {
108 dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
115 static struct snd_soc_jack_gpio rk_hp_jack_gpio = {
116 .name = "Headphone detection",
117 .report = SND_JACK_HEADPHONE,
121 static int rk_init(struct snd_soc_pcm_runtime *runtime)
123 struct rk_drvdata *machine = snd_soc_card_get_drvdata(runtime->card);
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,
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);
138 static const struct snd_soc_ops rk_ops = {
139 .hw_params = rk_hw_params,
142 SND_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()));
148 static struct snd_soc_dai_link rk_dailink = {
150 .stream_name = "Audio",
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),
159 static struct snd_soc_card snd_soc_card_rk = {
160 .name = "ROCKCHIP-I2S",
161 .dai_link = &rk_dailink,
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),
170 static int snd_rk_mc_probe(struct platform_device *pdev)
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;
178 machine = devm_kzalloc(&pdev->dev, sizeof(struct rk_drvdata),
183 card->dev = &pdev->dev;
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;
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;
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");
199 dev_err(card->dev, "cannot get hp_en gpio\n");
204 ret = snd_soc_of_parse_card_name(card, "rockchip,model");
206 dev_err(card->dev, "SoC parse card name failed %d\n", ret);
210 rk_dailink.codecs[0].of_node = of_parse_phandle(np,
211 "rockchip,audio-codec",
213 if (!rk_dailink.codecs[0].of_node) {
215 "Property 'rockchip,audio-codec' missing or invalid\n");
218 ret = of_parse_phandle_with_fixed_args(np, "rockchip,audio-codec",
222 "Unable to parse property 'rockchip,audio-codec'\n");
226 ret = snd_soc_get_dai_name(&args, &rk_dailink.codecs[0].dai_name);
228 dev_err(&pdev->dev, "Unable to get codec_dai_name\n");
232 rk_dailink.cpus->of_node = of_parse_phandle(np, "rockchip,i2s-controller",
234 if (!rk_dailink.cpus->of_node) {
236 "Property 'rockchip,i2s-controller' missing or invalid\n");
240 rk_dailink.platforms->of_node = rk_dailink.cpus->of_node;
242 ret = snd_soc_of_parse_audio_routing(card, "rockchip,routing");
245 "Unable to parse 'rockchip,routing' property\n");
249 snd_soc_card_set_drvdata(card, machine);
251 ret = devm_snd_soc_register_card(&pdev->dev, card);
252 if (ret == -EPROBE_DEFER)
253 return -EPROBE_DEFER;
256 "Soc register card failed %d\n", ret);
263 static const struct of_device_id rockchip_sound_of_match[] = {
264 { .compatible = "rockchip,rk3288-hdmi-analog", },
268 MODULE_DEVICE_TABLE(of, rockchip_sound_of_match);
270 static struct platform_driver rockchip_sound_driver = {
271 .probe = snd_rk_mc_probe,
274 .pm = &snd_soc_pm_ops,
275 .of_match_table = rockchip_sound_of_match,
279 module_platform_driver(rockchip_sound_driver);
281 MODULE_AUTHOR("Sjoerd Simons <sjoerd.simons@collabora.com>");
282 MODULE_DESCRIPTION("Rockchip RK3288 machine ASoC driver");
283 MODULE_LICENSE("GPL v2");
284 MODULE_ALIAS("platform:" DRV_NAME);