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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 = substream->private_data;
70 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
71 struct snd_soc_dai *codec_dai = rtd->codec_dai;
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
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
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
