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7637af2e SW |
1 | /* |
2 | * Tegra machine ASoC driver for boards using a MAX90809 CODEC. | |
3 | * | |
4 | * Copyright (c) 2013, NVIDIA CORPORATION. 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 "tegra_asoc_utils.h" | |
39 | ||
40 | #define DRV_NAME "tegra-snd-max98090" | |
41 | ||
42 | struct tegra_max98090 { | |
43 | struct tegra_asoc_utils_data util_data; | |
44 | int gpio_hp_det; | |
45 | }; | |
46 | ||
47 | static int tegra_max98090_asoc_hw_params(struct snd_pcm_substream *substream, | |
48 | struct snd_pcm_hw_params *params) | |
49 | { | |
50 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
51 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
093c4e5c | 52 | struct snd_soc_card *card = rtd->card; |
7637af2e SW |
53 | struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card); |
54 | int srate, mclk; | |
55 | int err; | |
56 | ||
57 | srate = params_rate(params); | |
58 | switch (srate) { | |
59 | case 8000: | |
60 | case 16000: | |
61 | case 24000: | |
62 | case 32000: | |
63 | case 48000: | |
64 | case 64000: | |
65 | case 96000: | |
66 | mclk = 12288000; | |
67 | break; | |
68 | case 11025: | |
69 | case 22050: | |
70 | case 44100: | |
71 | case 88200: | |
72 | mclk = 11289600; | |
73 | break; | |
74 | default: | |
75 | mclk = 12000000; | |
76 | break; | |
77 | } | |
78 | ||
79 | err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); | |
80 | if (err < 0) { | |
81 | dev_err(card->dev, "Can't configure clocks\n"); | |
82 | return err; | |
83 | } | |
84 | ||
85 | err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, | |
86 | SND_SOC_CLOCK_IN); | |
87 | if (err < 0) { | |
88 | dev_err(card->dev, "codec_dai clock not set\n"); | |
89 | return err; | |
90 | } | |
91 | ||
92 | return 0; | |
93 | } | |
94 | ||
95 | static struct snd_soc_ops tegra_max98090_ops = { | |
96 | .hw_params = tegra_max98090_asoc_hw_params, | |
97 | }; | |
98 | ||
99 | static struct snd_soc_jack tegra_max98090_hp_jack; | |
100 | ||
101 | static struct snd_soc_jack_pin tegra_max98090_hp_jack_pins[] = { | |
102 | { | |
103 | .pin = "Headphones", | |
104 | .mask = SND_JACK_HEADPHONE, | |
105 | }, | |
106 | }; | |
107 | ||
108 | static struct snd_soc_jack_gpio tegra_max98090_hp_jack_gpio = { | |
109 | .name = "Headphone detection", | |
110 | .report = SND_JACK_HEADPHONE, | |
111 | .debounce_time = 150, | |
112 | .invert = 1, | |
113 | }; | |
114 | ||
115 | static const struct snd_soc_dapm_widget tegra_max98090_dapm_widgets[] = { | |
116 | SND_SOC_DAPM_HP("Headphones", NULL), | |
117 | SND_SOC_DAPM_SPK("Speakers", NULL), | |
118 | SND_SOC_DAPM_MIC("Mic Jack", NULL), | |
119 | }; | |
120 | ||
121 | static const struct snd_kcontrol_new tegra_max98090_controls[] = { | |
122 | SOC_DAPM_PIN_SWITCH("Speakers"), | |
123 | }; | |
124 | ||
125 | static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd) | |
126 | { | |
127 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
128 | struct snd_soc_codec *codec = codec_dai->codec; | |
093c4e5c | 129 | struct tegra_max98090 *machine = snd_soc_card_get_drvdata(rtd->card); |
7637af2e SW |
130 | |
131 | if (gpio_is_valid(machine->gpio_hp_det)) { | |
132 | snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE, | |
133 | &tegra_max98090_hp_jack); | |
134 | snd_soc_jack_add_pins(&tegra_max98090_hp_jack, | |
135 | ARRAY_SIZE(tegra_max98090_hp_jack_pins), | |
136 | tegra_max98090_hp_jack_pins); | |
137 | ||
138 | tegra_max98090_hp_jack_gpio.gpio = machine->gpio_hp_det; | |
139 | snd_soc_jack_add_gpios(&tegra_max98090_hp_jack, | |
140 | 1, | |
141 | &tegra_max98090_hp_jack_gpio); | |
142 | } | |
143 | ||
144 | return 0; | |
145 | } | |
146 | ||
fb6b8e71 SW |
147 | static int tegra_max98090_card_remove(struct snd_soc_card *card) |
148 | { | |
149 | struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card); | |
150 | ||
151 | if (gpio_is_valid(machine->gpio_hp_det)) { | |
152 | snd_soc_jack_free_gpios(&tegra_max98090_hp_jack, 1, | |
153 | &tegra_max98090_hp_jack_gpio); | |
154 | } | |
155 | ||
156 | return 0; | |
157 | } | |
158 | ||
7637af2e SW |
159 | static struct snd_soc_dai_link tegra_max98090_dai = { |
160 | .name = "max98090", | |
161 | .stream_name = "max98090 PCM", | |
162 | .codec_dai_name = "HiFi", | |
163 | .init = tegra_max98090_asoc_init, | |
164 | .ops = &tegra_max98090_ops, | |
165 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | | |
166 | SND_SOC_DAIFMT_CBS_CFS, | |
167 | }; | |
168 | ||
169 | static struct snd_soc_card snd_soc_tegra_max98090 = { | |
170 | .name = "tegra-max98090", | |
171 | .owner = THIS_MODULE, | |
fb6b8e71 | 172 | .remove = tegra_max98090_card_remove, |
7637af2e SW |
173 | .dai_link = &tegra_max98090_dai, |
174 | .num_links = 1, | |
175 | .controls = tegra_max98090_controls, | |
176 | .num_controls = ARRAY_SIZE(tegra_max98090_controls), | |
177 | .dapm_widgets = tegra_max98090_dapm_widgets, | |
178 | .num_dapm_widgets = ARRAY_SIZE(tegra_max98090_dapm_widgets), | |
179 | .fully_routed = true, | |
180 | }; | |
181 | ||
182 | static int tegra_max98090_probe(struct platform_device *pdev) | |
183 | { | |
184 | struct device_node *np = pdev->dev.of_node; | |
185 | struct snd_soc_card *card = &snd_soc_tegra_max98090; | |
186 | struct tegra_max98090 *machine; | |
187 | int ret; | |
188 | ||
189 | machine = devm_kzalloc(&pdev->dev, | |
190 | sizeof(struct tegra_max98090), GFP_KERNEL); | |
191 | if (!machine) { | |
192 | dev_err(&pdev->dev, "Can't allocate tegra_max98090\n"); | |
193 | return -ENOMEM; | |
194 | } | |
195 | ||
196 | card->dev = &pdev->dev; | |
197 | platform_set_drvdata(pdev, card); | |
198 | snd_soc_card_set_drvdata(card, machine); | |
199 | ||
200 | machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0); | |
201 | if (machine->gpio_hp_det == -EPROBE_DEFER) | |
202 | return -EPROBE_DEFER; | |
203 | ||
204 | ret = snd_soc_of_parse_card_name(card, "nvidia,model"); | |
205 | if (ret) | |
206 | goto err; | |
207 | ||
208 | ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing"); | |
209 | if (ret) | |
210 | goto err; | |
211 | ||
212 | tegra_max98090_dai.codec_of_node = of_parse_phandle(np, | |
213 | "nvidia,audio-codec", 0); | |
214 | if (!tegra_max98090_dai.codec_of_node) { | |
215 | dev_err(&pdev->dev, | |
216 | "Property 'nvidia,audio-codec' missing or invalid\n"); | |
217 | ret = -EINVAL; | |
218 | goto err; | |
219 | } | |
220 | ||
221 | tegra_max98090_dai.cpu_of_node = of_parse_phandle(np, | |
222 | "nvidia,i2s-controller", 0); | |
223 | if (!tegra_max98090_dai.cpu_of_node) { | |
224 | dev_err(&pdev->dev, | |
225 | "Property 'nvidia,i2s-controller' missing or invalid\n"); | |
226 | ret = -EINVAL; | |
227 | goto err; | |
228 | } | |
229 | ||
230 | tegra_max98090_dai.platform_of_node = tegra_max98090_dai.cpu_of_node; | |
231 | ||
232 | ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); | |
233 | if (ret) | |
234 | goto err; | |
235 | ||
236 | ret = snd_soc_register_card(card); | |
237 | if (ret) { | |
238 | dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", | |
239 | ret); | |
240 | goto err_fini_utils; | |
241 | } | |
242 | ||
243 | return 0; | |
244 | ||
245 | err_fini_utils: | |
246 | tegra_asoc_utils_fini(&machine->util_data); | |
247 | err: | |
248 | return ret; | |
249 | } | |
250 | ||
251 | static int tegra_max98090_remove(struct platform_device *pdev) | |
252 | { | |
253 | struct snd_soc_card *card = platform_get_drvdata(pdev); | |
254 | struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card); | |
255 | ||
7637af2e SW |
256 | snd_soc_unregister_card(card); |
257 | ||
258 | tegra_asoc_utils_fini(&machine->util_data); | |
259 | ||
260 | return 0; | |
261 | } | |
262 | ||
263 | static const struct of_device_id tegra_max98090_of_match[] = { | |
264 | { .compatible = "nvidia,tegra-audio-max98090", }, | |
265 | {}, | |
266 | }; | |
267 | ||
268 | static struct platform_driver tegra_max98090_driver = { | |
269 | .driver = { | |
270 | .name = DRV_NAME, | |
271 | .owner = THIS_MODULE, | |
272 | .pm = &snd_soc_pm_ops, | |
273 | .of_match_table = tegra_max98090_of_match, | |
274 | }, | |
275 | .probe = tegra_max98090_probe, | |
276 | .remove = tegra_max98090_remove, | |
277 | }; | |
278 | module_platform_driver(tegra_max98090_driver); | |
279 | ||
280 | MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); | |
281 | MODULE_DESCRIPTION("Tegra max98090 machine ASoC driver"); | |
282 | MODULE_LICENSE("GPL v2"); | |
283 | MODULE_ALIAS("platform:" DRV_NAME); | |
284 | MODULE_DEVICE_TABLE(of, tegra_max98090_of_match); |