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26#include <linux/module.h>
27#include <linux/platform_device.h>
28#include <linux/slab.h>
29#include <linux/gpio.h>
30#include <linux/of_gpio.h>
31
32#include <sound/core.h>
33#include <sound/jack.h>
34#include <sound/pcm.h>
35#include <sound/pcm_params.h>
36#include <sound/soc.h>
37
38#include "tegra_asoc_utils.h"
39
40#define DRV_NAME "tegra-snd-max98090"
41
42struct tegra_max98090 {
43 struct tegra_asoc_utils_data util_data;
44 int gpio_hp_det;
45 int gpio_mic_det;
46};
47
48static int tegra_max98090_asoc_hw_params(struct snd_pcm_substream *substream,
49 struct snd_pcm_hw_params *params)
50{
51 struct snd_soc_pcm_runtime *rtd = substream->private_data;
52 struct snd_soc_dai *codec_dai = rtd->codec_dai;
53 struct snd_soc_card *card = rtd->card;
54 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
55 int srate, mclk;
56 int err;
57
58 srate = params_rate(params);
59 switch (srate) {
60 case 8000:
61 case 16000:
62 case 24000:
63 case 32000:
64 case 48000:
65 case 64000:
66 case 96000:
67 mclk = 12288000;
68 break;
69 case 11025:
70 case 22050:
71 case 44100:
72 case 88200:
73 mclk = 11289600;
74 break;
75 default:
76 mclk = 12000000;
77 break;
78 }
79
80 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
81 if (err < 0) {
82 dev_err(card->dev, "Can't configure clocks\n");
83 return err;
84 }
85
86 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
87 SND_SOC_CLOCK_IN);
88 if (err < 0) {
89 dev_err(card->dev, "codec_dai clock not set\n");
90 return err;
91 }
92
93 return 0;
94}
95
96static struct snd_soc_ops tegra_max98090_ops = {
97 .hw_params = tegra_max98090_asoc_hw_params,
98};
99
100static struct snd_soc_jack tegra_max98090_hp_jack;
101
102static struct snd_soc_jack_pin tegra_max98090_hp_jack_pins[] = {
103 {
104 .pin = "Headphones",
105 .mask = SND_JACK_HEADPHONE,
106 },
107};
108
109static struct snd_soc_jack_gpio tegra_max98090_hp_jack_gpio = {
110 .name = "Headphone detection",
111 .report = SND_JACK_HEADPHONE,
112 .debounce_time = 150,
113 .invert = 1,
114};
115
116static struct snd_soc_jack tegra_max98090_mic_jack;
117
118static struct snd_soc_jack_pin tegra_max98090_mic_jack_pins[] = {
119 {
120 .pin = "Mic Jack",
121 .mask = SND_JACK_MICROPHONE,
122 },
123};
124
125static struct snd_soc_jack_gpio tegra_max98090_mic_jack_gpio = {
126 .name = "Mic detection",
127 .report = SND_JACK_MICROPHONE,
128 .debounce_time = 150,
129 .invert = 1,
130};
131
132static const struct snd_soc_dapm_widget tegra_max98090_dapm_widgets[] = {
133 SND_SOC_DAPM_HP("Headphones", NULL),
134 SND_SOC_DAPM_SPK("Speakers", NULL),
135 SND_SOC_DAPM_MIC("Mic Jack", NULL),
136};
137
138static const struct snd_kcontrol_new tegra_max98090_controls[] = {
139 SOC_DAPM_PIN_SWITCH("Speakers"),
140};
141
142static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd)
143{
144 struct snd_soc_dai *codec_dai = rtd->codec_dai;
145 struct snd_soc_codec *codec = codec_dai->codec;
146 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(rtd->card);
147
148 if (gpio_is_valid(machine->gpio_hp_det)) {
149 snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE,
150 &tegra_max98090_hp_jack);
151 snd_soc_jack_add_pins(&tegra_max98090_hp_jack,
152 ARRAY_SIZE(tegra_max98090_hp_jack_pins),
153 tegra_max98090_hp_jack_pins);
154
155 tegra_max98090_hp_jack_gpio.gpio = machine->gpio_hp_det;
156 snd_soc_jack_add_gpios(&tegra_max98090_hp_jack,
157 1,
158 &tegra_max98090_hp_jack_gpio);
159 }
160
161 if (gpio_is_valid(machine->gpio_mic_det)) {
162 snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
163 &tegra_max98090_mic_jack);
164 snd_soc_jack_add_pins(&tegra_max98090_mic_jack,
165 ARRAY_SIZE(tegra_max98090_mic_jack_pins),
166 tegra_max98090_mic_jack_pins);
167
168 tegra_max98090_mic_jack_gpio.gpio = machine->gpio_mic_det;
169 snd_soc_jack_add_gpios(&tegra_max98090_mic_jack,
170 1,
171 &tegra_max98090_mic_jack_gpio);
172 }
173
174 return 0;
175}
176
177static int tegra_max98090_card_remove(struct snd_soc_card *card)
178{
179 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
180
181 if (gpio_is_valid(machine->gpio_hp_det)) {
182 snd_soc_jack_free_gpios(&tegra_max98090_hp_jack, 1,
183 &tegra_max98090_hp_jack_gpio);
184 }
185
186 if (gpio_is_valid(machine->gpio_mic_det)) {
187 snd_soc_jack_free_gpios(&tegra_max98090_mic_jack, 1,
188 &tegra_max98090_mic_jack_gpio);
189 }
190
191 return 0;
192}
193
194static struct snd_soc_dai_link tegra_max98090_dai = {
195 .name = "max98090",
196 .stream_name = "max98090 PCM",
197 .codec_dai_name = "HiFi",
198 .init = tegra_max98090_asoc_init,
199 .ops = &tegra_max98090_ops,
200 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
201 SND_SOC_DAIFMT_CBS_CFS,
202};
203
204static struct snd_soc_card snd_soc_tegra_max98090 = {
205 .name = "tegra-max98090",
206 .owner = THIS_MODULE,
207 .remove = tegra_max98090_card_remove,
208 .dai_link = &tegra_max98090_dai,
209 .num_links = 1,
210 .controls = tegra_max98090_controls,
211 .num_controls = ARRAY_SIZE(tegra_max98090_controls),
212 .dapm_widgets = tegra_max98090_dapm_widgets,
213 .num_dapm_widgets = ARRAY_SIZE(tegra_max98090_dapm_widgets),
214 .fully_routed = true,
215};
216
217static int tegra_max98090_probe(struct platform_device *pdev)
218{
219 struct device_node *np = pdev->dev.of_node;
220 struct snd_soc_card *card = &snd_soc_tegra_max98090;
221 struct tegra_max98090 *machine;
222 int ret;
223
224 machine = devm_kzalloc(&pdev->dev,
225 sizeof(struct tegra_max98090), GFP_KERNEL);
226 if (!machine) {
227 dev_err(&pdev->dev, "Can't allocate tegra_max98090\n");
228 return -ENOMEM;
229 }
230
231 card->dev = &pdev->dev;
232 platform_set_drvdata(pdev, card);
233 snd_soc_card_set_drvdata(card, machine);
234
235 machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
236 if (machine->gpio_hp_det == -EPROBE_DEFER)
237 return -EPROBE_DEFER;
238
239 machine->gpio_mic_det =
240 of_get_named_gpio(np, "nvidia,mic-det-gpios", 0);
241 if (machine->gpio_mic_det == -EPROBE_DEFER)
242 return -EPROBE_DEFER;
243
244 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
245 if (ret)
246 goto err;
247
248 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
249 if (ret)
250 goto err;
251
252 tegra_max98090_dai.codec_of_node = of_parse_phandle(np,
253 "nvidia,audio-codec", 0);
254 if (!tegra_max98090_dai.codec_of_node) {
255 dev_err(&pdev->dev,
256 "Property 'nvidia,audio-codec' missing or invalid\n");
257 ret = -EINVAL;
258 goto err;
259 }
260
261 tegra_max98090_dai.cpu_of_node = of_parse_phandle(np,
262 "nvidia,i2s-controller", 0);
263 if (!tegra_max98090_dai.cpu_of_node) {
264 dev_err(&pdev->dev,
265 "Property 'nvidia,i2s-controller' missing or invalid\n");
266 ret = -EINVAL;
267 goto err;
268 }
269
270 tegra_max98090_dai.platform_of_node = tegra_max98090_dai.cpu_of_node;
271
272 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
273 if (ret)
274 goto err;
275
276 ret = snd_soc_register_card(card);
277 if (ret) {
278 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
279 ret);
280 goto err_fini_utils;
281 }
282
283 return 0;
284
285err_fini_utils:
286 tegra_asoc_utils_fini(&machine->util_data);
287err:
288 return ret;
289}
290
291static int tegra_max98090_remove(struct platform_device *pdev)
292{
293 struct snd_soc_card *card = platform_get_drvdata(pdev);
294 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
295
296 snd_soc_unregister_card(card);
297
298 tegra_asoc_utils_fini(&machine->util_data);
299
300 return 0;
301}
302
303static const struct of_device_id tegra_max98090_of_match[] = {
304 { .compatible = "nvidia,tegra-audio-max98090", },
305 {},
306};
307
308static struct platform_driver tegra_max98090_driver = {
309 .driver = {
310 .name = DRV_NAME,
311 .pm = &snd_soc_pm_ops,
312 .of_match_table = tegra_max98090_of_match,
313 },
314 .probe = tegra_max98090_probe,
315 .remove = tegra_max98090_remove,
316};
317module_platform_driver(tegra_max98090_driver);
318
319MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
320MODULE_DESCRIPTION("Tegra max98090 machine ASoC driver");
321MODULE_LICENSE("GPL v2");
322MODULE_ALIAS("platform:" DRV_NAME);
323MODULE_DEVICE_TABLE(of, tegra_max98090_of_match);
324
