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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 enum of_gpio_flags gpio_hp_det_flags;
48};
49
50static int tegra_rt5640_asoc_hw_params(struct snd_pcm_substream *substream,
51 struct snd_pcm_hw_params *params)
52{
53 struct snd_soc_pcm_runtime *rtd = substream->private_data;
54 struct snd_soc_dai *codec_dai = rtd->codec_dai;
55 struct snd_soc_card *card = rtd->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 SND_SOC_DAPM_MIC("Mic Jack", NULL),
103};
104
105static const struct snd_kcontrol_new tegra_rt5640_controls[] = {
106 SOC_DAPM_PIN_SWITCH("Speakers"),
107};
108
109static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd)
110{
111 struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(rtd->card);
112
113 snd_soc_card_jack_new(rtd->card, "Headphones", SND_JACK_HEADPHONE,
114 &tegra_rt5640_hp_jack, tegra_rt5640_hp_jack_pins,
115 ARRAY_SIZE(tegra_rt5640_hp_jack_pins));
116
117 if (gpio_is_valid(machine->gpio_hp_det)) {
118 tegra_rt5640_hp_jack_gpio.gpio = machine->gpio_hp_det;
119 tegra_rt5640_hp_jack_gpio.invert =
120 !!(machine->gpio_hp_det_flags & OF_GPIO_ACTIVE_LOW);
121 snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack,
122 1,
123 &tegra_rt5640_hp_jack_gpio);
124 }
125
126 return 0;
127}
128
129static int tegra_rt5640_card_remove(struct snd_soc_card *card)
130{
131 struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
132
133 if (gpio_is_valid(machine->gpio_hp_det)) {
134 snd_soc_jack_free_gpios(&tegra_rt5640_hp_jack, 1,
135 &tegra_rt5640_hp_jack_gpio);
136 }
137
138 return 0;
139}
140
141static struct snd_soc_dai_link tegra_rt5640_dai = {
142 .name = "RT5640",
143 .stream_name = "RT5640 PCM",
144 .codec_dai_name = "rt5640-aif1",
145 .init = tegra_rt5640_asoc_init,
146 .ops = &tegra_rt5640_ops,
147 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
148 SND_SOC_DAIFMT_CBS_CFS,
149};
150
151static struct snd_soc_card snd_soc_tegra_rt5640 = {
152 .name = "tegra-rt5640",
153 .owner = THIS_MODULE,
154 .remove = tegra_rt5640_card_remove,
155 .dai_link = &tegra_rt5640_dai,
156 .num_links = 1,
157 .controls = tegra_rt5640_controls,
158 .num_controls = ARRAY_SIZE(tegra_rt5640_controls),
159 .dapm_widgets = tegra_rt5640_dapm_widgets,
160 .num_dapm_widgets = ARRAY_SIZE(tegra_rt5640_dapm_widgets),
161 .fully_routed = true,
162};
163
164static int tegra_rt5640_probe(struct platform_device *pdev)
165{
166 struct device_node *np = pdev->dev.of_node;
167 struct snd_soc_card *card = &snd_soc_tegra_rt5640;
168 struct tegra_rt5640 *machine;
169 int ret;
170
171 machine = devm_kzalloc(&pdev->dev,
172 sizeof(struct tegra_rt5640), GFP_KERNEL);
173 if (!machine) {
174 dev_err(&pdev->dev, "Can't allocate tegra_rt5640\n");
175 return -ENOMEM;
176 }
177
178 card->dev = &pdev->dev;
179 platform_set_drvdata(pdev, card);
180 snd_soc_card_set_drvdata(card, machine);
181
182 machine->gpio_hp_det = of_get_named_gpio_flags(
183 np, "nvidia,hp-det-gpios", 0, &machine->gpio_hp_det_flags);
184 if (machine->gpio_hp_det == -EPROBE_DEFER)
185 return -EPROBE_DEFER;
186
187 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
188 if (ret)
189 goto err;
190
191 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
192 if (ret)
193 goto err;
194
195 tegra_rt5640_dai.codec_of_node = of_parse_phandle(np,
196 "nvidia,audio-codec", 0);
197 if (!tegra_rt5640_dai.codec_of_node) {
198 dev_err(&pdev->dev,
199 "Property 'nvidia,audio-codec' missing or invalid\n");
200 ret = -EINVAL;
201 goto err;
202 }
203
204 tegra_rt5640_dai.cpu_of_node = of_parse_phandle(np,
205 "nvidia,i2s-controller", 0);
206 if (!tegra_rt5640_dai.cpu_of_node) {
207 dev_err(&pdev->dev,
208 "Property 'nvidia,i2s-controller' missing or invalid\n");
209 ret = -EINVAL;
210 goto err;
211 }
212
213 tegra_rt5640_dai.platform_of_node = tegra_rt5640_dai.cpu_of_node;
214
215 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
216 if (ret)
217 goto err;
218
219 ret = snd_soc_register_card(card);
220 if (ret) {
221 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
222 ret);
223 goto err_fini_utils;
224 }
225
226 return 0;
227
228err_fini_utils:
229 tegra_asoc_utils_fini(&machine->util_data);
230err:
231 return ret;
232}
233
234static int tegra_rt5640_remove(struct platform_device *pdev)
235{
236 struct snd_soc_card *card = platform_get_drvdata(pdev);
237 struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
238
239 snd_soc_unregister_card(card);
240
241 tegra_asoc_utils_fini(&machine->util_data);
242
243 return 0;
244}
245
246static const struct of_device_id tegra_rt5640_of_match[] = {
247 { .compatible = "nvidia,tegra-audio-rt5640", },
248 {},
249};
250
251static struct platform_driver tegra_rt5640_driver = {
252 .driver = {
253 .name = DRV_NAME,
254 .pm = &snd_soc_pm_ops,
255 .of_match_table = tegra_rt5640_of_match,
256 },
257 .probe = tegra_rt5640_probe,
258 .remove = tegra_rt5640_remove,
259};
260module_platform_driver(tegra_rt5640_driver);
261
262MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
263MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
264MODULE_LICENSE("GPL v2");
265MODULE_ALIAS("platform:" DRV_NAME);
266MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match);
267
