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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 "../codecs/rt5640.h"
39
40#include "tegra_asoc_utils.h"
41
42#define DRV_NAME "tegra-snd-rt5640"
43
44struct tegra_rt5640 {
45 struct tegra_asoc_utils_data util_data;
46 int gpio_hp_det;
47};
48
49static int tegra_rt5640_asoc_hw_params(struct snd_pcm_substream *substream,
50 struct snd_pcm_hw_params *params)
51{
52 struct snd_soc_pcm_runtime *rtd = substream->private_data;
53 struct snd_soc_dai *codec_dai = rtd->codec_dai;
54 struct snd_soc_codec *codec = codec_dai->codec;
55 struct snd_soc_card *card = codec->card;
56 struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
57 int srate, mclk;
58 int err;
59
60 srate = params_rate(params);
61 mclk = 256 * srate;
62
63 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
64 if (err < 0) {
65 dev_err(card->dev, "Can't configure clocks\n");
66 return err;
67 }
68
69 err = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_MCLK, mclk,
70 SND_SOC_CLOCK_IN);
71 if (err < 0) {
72 dev_err(card->dev, "codec_dai clock not set\n");
73 return err;
74 }
75
76 return 0;
77}
78
79static struct snd_soc_ops tegra_rt5640_ops = {
80 .hw_params = tegra_rt5640_asoc_hw_params,
81};
82
83static struct snd_soc_jack tegra_rt5640_hp_jack;
84
85static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins[] = {
86 {
87 .pin = "Headphones",
88 .mask = SND_JACK_HEADPHONE,
89 },
90};
91
92static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio = {
93 .name = "Headphone detection",
94 .report = SND_JACK_HEADPHONE,
95 .debounce_time = 150,
96 .invert = 1,
97};
98
99static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets[] = {
100 SND_SOC_DAPM_HP("Headphones", NULL),
101 SND_SOC_DAPM_SPK("Speakers", NULL),
102};
103
104static const struct snd_kcontrol_new tegra_rt5640_controls[] = {
105 SOC_DAPM_PIN_SWITCH("Speakers"),
106};
107
108static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd)
109{
110 struct snd_soc_dai *codec_dai = rtd->codec_dai;
111 struct snd_soc_codec *codec = codec_dai->codec;
112 struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(codec->card);
113
114 snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE,
115 &tegra_rt5640_hp_jack);
116 snd_soc_jack_add_pins(&tegra_rt5640_hp_jack,
117 ARRAY_SIZE(tegra_rt5640_hp_jack_pins),
118 tegra_rt5640_hp_jack_pins);
119
120 if (gpio_is_valid(machine->gpio_hp_det)) {
121 tegra_rt5640_hp_jack_gpio.gpio = machine->gpio_hp_det;
122 snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack,
123 1,
124 &tegra_rt5640_hp_jack_gpio);
125 }
126
127 return 0;
128}
129
130static struct snd_soc_dai_link tegra_rt5640_dai = {
131 .name = "RT5640",
132 .stream_name = "RT5640 PCM",
133 .codec_dai_name = "rt5640-aif1",
134 .init = tegra_rt5640_asoc_init,
135 .ops = &tegra_rt5640_ops,
136 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
137 SND_SOC_DAIFMT_CBS_CFS,
138};
139
140static struct snd_soc_card snd_soc_tegra_rt5640 = {
141 .name = "tegra-rt5640",
142 .owner = THIS_MODULE,
143 .dai_link = &tegra_rt5640_dai,
144 .num_links = 1,
145 .controls = tegra_rt5640_controls,
146 .num_controls = ARRAY_SIZE(tegra_rt5640_controls),
147 .dapm_widgets = tegra_rt5640_dapm_widgets,
148 .num_dapm_widgets = ARRAY_SIZE(tegra_rt5640_dapm_widgets),
149 .fully_routed = true,
150};
151
152static int tegra_rt5640_probe(struct platform_device *pdev)
153{
154 struct device_node *np = pdev->dev.of_node;
155 struct snd_soc_card *card = &snd_soc_tegra_rt5640;
156 struct tegra_rt5640 *machine;
157 int ret;
158
159 machine = devm_kzalloc(&pdev->dev,
160 sizeof(struct tegra_rt5640), GFP_KERNEL);
161 if (!machine) {
162 dev_err(&pdev->dev, "Can't allocate tegra_rt5640\n");
163 return -ENOMEM;
164 }
165
166 card->dev = &pdev->dev;
167 platform_set_drvdata(pdev, card);
168 snd_soc_card_set_drvdata(card, machine);
169
170 machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
171 if (machine->gpio_hp_det == -EPROBE_DEFER)
172 return -EPROBE_DEFER;
173
174 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
175 if (ret)
176 goto err;
177
178 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
179 if (ret)
180 goto err;
181
182 tegra_rt5640_dai.codec_of_node = of_parse_phandle(np,
183 "nvidia,audio-codec", 0);
184 if (!tegra_rt5640_dai.codec_of_node) {
185 dev_err(&pdev->dev,
186 "Property 'nvidia,audio-codec' missing or invalid\n");
187 ret = -EINVAL;
188 goto err;
189 }
190
191 tegra_rt5640_dai.cpu_of_node = of_parse_phandle(np,
192 "nvidia,i2s-controller", 0);
193 if (!tegra_rt5640_dai.cpu_of_node) {
194 dev_err(&pdev->dev,
195 "Property 'nvidia,i2s-controller' missing or invalid\n");
196 ret = -EINVAL;
197 goto err;
198 }
199
200 tegra_rt5640_dai.platform_of_node = tegra_rt5640_dai.cpu_of_node;
201
202 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
203 if (ret)
204 goto err;
205
206 ret = snd_soc_register_card(card);
207 if (ret) {
208 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
209 ret);
210 goto err_fini_utils;
211 }
212
213 return 0;
214
215err_fini_utils:
216 tegra_asoc_utils_fini(&machine->util_data);
217err:
218 return ret;
219}
220
221static int tegra_rt5640_remove(struct platform_device *pdev)
222{
223 struct snd_soc_card *card = platform_get_drvdata(pdev);
224 struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
225
226 snd_soc_jack_free_gpios(&tegra_rt5640_hp_jack, 1,
227 &tegra_rt5640_hp_jack_gpio);
228
229 snd_soc_unregister_card(card);
230
231 tegra_asoc_utils_fini(&machine->util_data);
232
233 return 0;
234}
235
236static const struct of_device_id tegra_rt5640_of_match[] = {
237 { .compatible = "nvidia,tegra-audio-rt5640", },
238 {},
239};
240
241static struct platform_driver tegra_rt5640_driver = {
242 .driver = {
243 .name = DRV_NAME,
244 .owner = THIS_MODULE,
245 .pm = &snd_soc_pm_ops,
246 .of_match_table = tegra_rt5640_of_match,
247 },
248 .probe = tegra_rt5640_probe,
249 .remove = tegra_rt5640_remove,
250};
251module_platform_driver(tegra_rt5640_driver);
252
253MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
254MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
255MODULE_LICENSE("GPL v2");
256MODULE_ALIAS("platform:" DRV_NAME);
257MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match);
258
