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a37f1b8f AP |
1 | /* |
2 | * tegra_rt5677.c - Tegra machine ASoC driver for boards using RT5677 codec. | |
3 | * | |
4 | * Copyright (c) 2014, The Chromium OS Authors. All rights reserved. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms and conditions of the GNU General Public License, | |
8 | * version 2, as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope it will be useful, but WITHOUT | |
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | * more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
17 | * | |
18 | * Based on code copyright/by: | |
19 | * | |
20 | * Copyright (C) 2010-2012 - NVIDIA, Inc. | |
21 | * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net> | |
22 | * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd. | |
23 | * Copyright 2007 Wolfson Microelectronics PLC. | |
24 | */ | |
25 | ||
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/rt5677.h" | |
39 | ||
40 | #include "tegra_asoc_utils.h" | |
41 | ||
42 | #define DRV_NAME "tegra-snd-rt5677" | |
43 | ||
44 | struct tegra_rt5677 { | |
45 | struct tegra_asoc_utils_data util_data; | |
46 | int gpio_hp_det; | |
47 | int gpio_hp_en; | |
48 | int gpio_mic_present; | |
49 | int gpio_dmic_clk_en; | |
50 | }; | |
51 | ||
52 | static int tegra_rt5677_asoc_hw_params(struct snd_pcm_substream *substream, | |
53 | struct snd_pcm_hw_params *params) | |
54 | { | |
55 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
56 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
57 | struct snd_soc_card *card = rtd->card; | |
58 | struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card); | |
59 | int srate, mclk, err; | |
60 | ||
61 | srate = params_rate(params); | |
62 | mclk = 256 * srate; | |
63 | ||
64 | err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); | |
65 | if (err < 0) { | |
66 | dev_err(card->dev, "Can't configure clocks\n"); | |
67 | return err; | |
68 | } | |
69 | ||
70 | err = snd_soc_dai_set_sysclk(codec_dai, RT5677_SCLK_S_MCLK, mclk, | |
71 | SND_SOC_CLOCK_IN); | |
72 | if (err < 0) { | |
73 | dev_err(card->dev, "codec_dai clock not set\n"); | |
74 | return err; | |
75 | } | |
76 | ||
77 | return 0; | |
78 | } | |
79 | ||
80 | static int tegra_rt5677_event_hp(struct snd_soc_dapm_widget *w, | |
81 | struct snd_kcontrol *k, int event) | |
82 | { | |
83 | struct snd_soc_dapm_context *dapm = w->dapm; | |
84 | struct snd_soc_card *card = dapm->card; | |
85 | struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card); | |
86 | ||
87 | if (!gpio_is_valid(machine->gpio_hp_en)) | |
88 | return 0; | |
89 | ||
90 | gpio_set_value_cansleep(machine->gpio_hp_en, | |
91 | SND_SOC_DAPM_EVENT_ON(event)); | |
92 | ||
93 | return 0; | |
94 | } | |
95 | ||
96 | static struct snd_soc_ops tegra_rt5677_ops = { | |
97 | .hw_params = tegra_rt5677_asoc_hw_params, | |
98 | }; | |
99 | ||
100 | static struct snd_soc_jack tegra_rt5677_hp_jack; | |
101 | ||
102 | static struct snd_soc_jack_pin tegra_rt5677_hp_jack_pins = { | |
103 | .pin = "Headphone", | |
104 | .mask = SND_JACK_HEADPHONE, | |
105 | }; | |
106 | static struct snd_soc_jack_gpio tegra_rt5677_hp_jack_gpio = { | |
107 | .name = "Headphone detection", | |
108 | .report = SND_JACK_HEADPHONE, | |
109 | .debounce_time = 150, | |
110 | }; | |
111 | ||
112 | static struct snd_soc_jack tegra_rt5677_mic_jack; | |
113 | ||
114 | static struct snd_soc_jack_pin tegra_rt5677_mic_jack_pins = { | |
115 | .pin = "Headset Mic", | |
116 | .mask = SND_JACK_MICROPHONE, | |
117 | }; | |
118 | ||
119 | static struct snd_soc_jack_gpio tegra_rt5677_mic_jack_gpio = { | |
120 | .name = "Headset Mic detection", | |
121 | .report = SND_JACK_MICROPHONE, | |
122 | .debounce_time = 150, | |
123 | .invert = 1 | |
124 | }; | |
125 | ||
126 | static const struct snd_soc_dapm_widget tegra_rt5677_dapm_widgets[] = { | |
127 | SND_SOC_DAPM_SPK("Speaker", NULL), | |
128 | SND_SOC_DAPM_HP("Headphone", tegra_rt5677_event_hp), | |
129 | SND_SOC_DAPM_MIC("Headset Mic", NULL), | |
130 | SND_SOC_DAPM_MIC("Internal Mic 1", NULL), | |
131 | SND_SOC_DAPM_MIC("Internal Mic 2", NULL), | |
132 | }; | |
133 | ||
134 | static const struct snd_kcontrol_new tegra_rt5677_controls[] = { | |
135 | SOC_DAPM_PIN_SWITCH("Speaker"), | |
136 | SOC_DAPM_PIN_SWITCH("Headphone"), | |
137 | SOC_DAPM_PIN_SWITCH("Headset Mic"), | |
138 | SOC_DAPM_PIN_SWITCH("Internal Mic 1"), | |
139 | SOC_DAPM_PIN_SWITCH("Internal Mic 2"), | |
140 | }; | |
141 | ||
142 | static int tegra_rt5677_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 snd_soc_dapm_context *dapm = &codec->dapm; | |
147 | struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(rtd->card); | |
148 | ||
149 | snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE, | |
150 | &tegra_rt5677_hp_jack); | |
151 | snd_soc_jack_add_pins(&tegra_rt5677_hp_jack, 1, | |
152 | &tegra_rt5677_hp_jack_pins); | |
153 | ||
154 | if (gpio_is_valid(machine->gpio_hp_det)) { | |
155 | tegra_rt5677_hp_jack_gpio.gpio = machine->gpio_hp_det; | |
156 | snd_soc_jack_add_gpios(&tegra_rt5677_hp_jack, 1, | |
157 | &tegra_rt5677_hp_jack_gpio); | |
158 | } | |
159 | ||
160 | ||
161 | snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE, | |
162 | &tegra_rt5677_mic_jack); | |
163 | snd_soc_jack_add_pins(&tegra_rt5677_mic_jack, 1, | |
164 | &tegra_rt5677_mic_jack_pins); | |
165 | ||
166 | if (gpio_is_valid(machine->gpio_mic_present)) { | |
167 | tegra_rt5677_mic_jack_gpio.gpio = machine->gpio_mic_present; | |
168 | snd_soc_jack_add_gpios(&tegra_rt5677_mic_jack, 1, | |
169 | &tegra_rt5677_mic_jack_gpio); | |
170 | } | |
171 | ||
172 | snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1"); | |
173 | ||
174 | return 0; | |
175 | } | |
176 | ||
177 | static int tegra_rt5677_card_remove(struct snd_soc_card *card) | |
178 | { | |
179 | struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card); | |
180 | ||
181 | if (gpio_is_valid(machine->gpio_hp_det)) { | |
182 | snd_soc_jack_free_gpios(&tegra_rt5677_hp_jack, 1, | |
183 | &tegra_rt5677_hp_jack_gpio); | |
184 | } | |
185 | ||
186 | if (gpio_is_valid(machine->gpio_mic_present)) { | |
187 | snd_soc_jack_free_gpios(&tegra_rt5677_mic_jack, 1, | |
188 | &tegra_rt5677_mic_jack_gpio); | |
189 | } | |
190 | ||
191 | return 0; | |
192 | } | |
193 | ||
194 | static struct snd_soc_dai_link tegra_rt5677_dai = { | |
195 | .name = "RT5677", | |
196 | .stream_name = "RT5677 PCM", | |
197 | .codec_dai_name = "rt5677-aif1", | |
198 | .init = tegra_rt5677_asoc_init, | |
199 | .ops = &tegra_rt5677_ops, | |
200 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | | |
201 | SND_SOC_DAIFMT_CBS_CFS, | |
202 | }; | |
203 | ||
204 | static struct snd_soc_card snd_soc_tegra_rt5677 = { | |
205 | .name = "tegra-rt5677", | |
206 | .owner = THIS_MODULE, | |
207 | .remove = tegra_rt5677_card_remove, | |
208 | .dai_link = &tegra_rt5677_dai, | |
209 | .num_links = 1, | |
210 | .controls = tegra_rt5677_controls, | |
211 | .num_controls = ARRAY_SIZE(tegra_rt5677_controls), | |
212 | .dapm_widgets = tegra_rt5677_dapm_widgets, | |
213 | .num_dapm_widgets = ARRAY_SIZE(tegra_rt5677_dapm_widgets), | |
214 | .fully_routed = true, | |
215 | }; | |
216 | ||
217 | static int tegra_rt5677_probe(struct platform_device *pdev) | |
218 | { | |
219 | struct device_node *np = pdev->dev.of_node; | |
220 | struct snd_soc_card *card = &snd_soc_tegra_rt5677; | |
221 | struct tegra_rt5677 *machine; | |
222 | int ret; | |
223 | ||
224 | machine = devm_kzalloc(&pdev->dev, | |
225 | sizeof(struct tegra_rt5677), GFP_KERNEL); | |
226 | if (!machine) | |
227 | return -ENOMEM; | |
228 | ||
229 | card->dev = &pdev->dev; | |
230 | platform_set_drvdata(pdev, card); | |
231 | snd_soc_card_set_drvdata(card, machine); | |
232 | ||
233 | machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0); | |
234 | if (machine->gpio_hp_det == -EPROBE_DEFER) | |
235 | return -EPROBE_DEFER; | |
236 | ||
237 | machine->gpio_mic_present = of_get_named_gpio(np, | |
238 | "nvidia,mic-present-gpios", 0); | |
239 | if (machine->gpio_mic_present == -EPROBE_DEFER) | |
240 | return -EPROBE_DEFER; | |
241 | ||
242 | machine->gpio_hp_en = of_get_named_gpio(np, "nvidia,hp-en-gpios", 0); | |
243 | if (machine->gpio_hp_en == -EPROBE_DEFER) | |
244 | return -EPROBE_DEFER; | |
245 | if (gpio_is_valid(machine->gpio_hp_en)) { | |
246 | ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en, | |
247 | GPIOF_OUT_INIT_LOW, "hp_en"); | |
248 | if (ret) { | |
249 | dev_err(card->dev, "cannot get hp_en gpio\n"); | |
250 | return ret; | |
251 | } | |
252 | } | |
253 | ||
254 | machine->gpio_dmic_clk_en = of_get_named_gpio(np, | |
255 | "nvidia,dmic-clk-en-gpios", 0); | |
256 | if (machine->gpio_dmic_clk_en == -EPROBE_DEFER) | |
257 | return -EPROBE_DEFER; | |
258 | if (gpio_is_valid(machine->gpio_dmic_clk_en)) { | |
259 | ret = devm_gpio_request_one(&pdev->dev, | |
260 | machine->gpio_dmic_clk_en, | |
261 | GPIOF_OUT_INIT_HIGH, "dmic_clk_en"); | |
262 | if (ret) { | |
263 | dev_err(card->dev, "cannot get dmic_clk_en gpio\n"); | |
264 | return ret; | |
265 | } | |
266 | } | |
267 | ||
268 | ret = snd_soc_of_parse_card_name(card, "nvidia,model"); | |
269 | if (ret) | |
270 | goto err; | |
271 | ||
272 | ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing"); | |
273 | if (ret) | |
274 | goto err; | |
275 | ||
276 | tegra_rt5677_dai.codec_of_node = of_parse_phandle(np, | |
277 | "nvidia,audio-codec", 0); | |
278 | if (!tegra_rt5677_dai.codec_of_node) { | |
279 | dev_err(&pdev->dev, | |
280 | "Property 'nvidia,audio-codec' missing or invalid\n"); | |
281 | ret = -EINVAL; | |
282 | goto err; | |
283 | } | |
284 | ||
285 | tegra_rt5677_dai.cpu_of_node = of_parse_phandle(np, | |
286 | "nvidia,i2s-controller", 0); | |
287 | if (!tegra_rt5677_dai.cpu_of_node) { | |
288 | dev_err(&pdev->dev, | |
289 | "Property 'nvidia,i2s-controller' missing or invalid\n"); | |
290 | ret = -EINVAL; | |
291 | goto err; | |
292 | } | |
293 | tegra_rt5677_dai.platform_of_node = tegra_rt5677_dai.cpu_of_node; | |
294 | ||
295 | ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); | |
296 | if (ret) | |
297 | goto err; | |
298 | ||
299 | ret = snd_soc_register_card(card); | |
300 | if (ret) { | |
301 | dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", | |
302 | ret); | |
303 | goto err_fini_utils; | |
304 | } | |
305 | ||
306 | return 0; | |
307 | ||
308 | err_fini_utils: | |
309 | tegra_asoc_utils_fini(&machine->util_data); | |
310 | err: | |
311 | return ret; | |
312 | } | |
313 | ||
314 | static int tegra_rt5677_remove(struct platform_device *pdev) | |
315 | { | |
316 | struct snd_soc_card *card = platform_get_drvdata(pdev); | |
317 | struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card); | |
318 | ||
319 | snd_soc_unregister_card(card); | |
320 | ||
321 | tegra_asoc_utils_fini(&machine->util_data); | |
322 | ||
323 | return 0; | |
324 | } | |
325 | ||
326 | static const struct of_device_id tegra_rt5677_of_match[] = { | |
327 | { .compatible = "nvidia,tegra-audio-rt5677", }, | |
328 | {}, | |
329 | }; | |
330 | ||
331 | static struct platform_driver tegra_rt5677_driver = { | |
332 | .driver = { | |
333 | .name = DRV_NAME, | |
334 | .owner = THIS_MODULE, | |
335 | .pm = &snd_soc_pm_ops, | |
336 | .of_match_table = tegra_rt5677_of_match, | |
337 | }, | |
338 | .probe = tegra_rt5677_probe, | |
339 | .remove = tegra_rt5677_remove, | |
340 | }; | |
341 | module_platform_driver(tegra_rt5677_driver); | |
342 | ||
343 | MODULE_AUTHOR("Anatol Pomozov <anatol@google.com>"); | |
344 | MODULE_DESCRIPTION("Tegra+RT5677 machine ASoC driver"); | |
345 | MODULE_LICENSE("GPL v2"); | |
346 | MODULE_ALIAS("platform:" DRV_NAME); | |
347 | MODULE_DEVICE_TABLE(of, tegra_rt5677_of_match); |