Commit | Line | Data |
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040a62cf | 1 | /* |
c614a312 | 2 | * tegra_rt5640.c - Tegra machine ASoC driver for boards using RT5640 codec. |
040a62cf SW |
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 "../codecs/rt5640.h" | |
39 | ||
40 | #include "tegra_asoc_utils.h" | |
41 | ||
42 | #define DRV_NAME "tegra-snd-rt5640" | |
43 | ||
44 | struct tegra_rt5640 { | |
45 | struct tegra_asoc_utils_data util_data; | |
46 | int gpio_hp_det; | |
469cda29 | 47 | enum of_gpio_flags gpio_hp_det_flags; |
040a62cf SW |
48 | }; |
49 | ||
50 | static 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; | |
093c4e5c | 55 | struct snd_soc_card *card = rtd->card; |
040a62cf SW |
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 | ||
79 | static struct snd_soc_ops tegra_rt5640_ops = { | |
80 | .hw_params = tegra_rt5640_asoc_hw_params, | |
81 | }; | |
82 | ||
83 | static struct snd_soc_jack tegra_rt5640_hp_jack; | |
84 | ||
85 | static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins[] = { | |
86 | { | |
87 | .pin = "Headphones", | |
88 | .mask = SND_JACK_HEADPHONE, | |
89 | }, | |
90 | }; | |
91 | ||
92 | static 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 | ||
99 | static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets[] = { | |
100 | SND_SOC_DAPM_HP("Headphones", NULL), | |
101 | SND_SOC_DAPM_SPK("Speakers", NULL), | |
7ac0da8c | 102 | SND_SOC_DAPM_MIC("Mic Jack", NULL), |
040a62cf SW |
103 | }; |
104 | ||
105 | static const struct snd_kcontrol_new tegra_rt5640_controls[] = { | |
106 | SOC_DAPM_PIN_SWITCH("Speakers"), | |
107 | }; | |
108 | ||
109 | static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd) | |
110 | { | |
093c4e5c | 111 | struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(rtd->card); |
040a62cf | 112 | |
00eafe3b LPC |
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)); | |
040a62cf SW |
116 | |
117 | if (gpio_is_valid(machine->gpio_hp_det)) { | |
118 | tegra_rt5640_hp_jack_gpio.gpio = machine->gpio_hp_det; | |
469cda29 AB |
119 | tegra_rt5640_hp_jack_gpio.invert = |
120 | !!(machine->gpio_hp_det_flags & OF_GPIO_ACTIVE_LOW); | |
040a62cf SW |
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 | ||
fb6b8e71 SW |
129 | static 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 | ||
040a62cf SW |
141 | static 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 | ||
151 | static struct snd_soc_card snd_soc_tegra_rt5640 = { | |
152 | .name = "tegra-rt5640", | |
153 | .owner = THIS_MODULE, | |
fb6b8e71 | 154 | .remove = tegra_rt5640_card_remove, |
040a62cf SW |
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 | ||
164 | static 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 | ||
469cda29 AB |
182 | machine->gpio_hp_det = of_get_named_gpio_flags( |
183 | np, "nvidia,hp-det-gpios", 0, &machine->gpio_hp_det_flags); | |
040a62cf SW |
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 | ||
228 | err_fini_utils: | |
229 | tegra_asoc_utils_fini(&machine->util_data); | |
230 | err: | |
231 | return ret; | |
232 | } | |
233 | ||
234 | static 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 | ||
040a62cf SW |
239 | snd_soc_unregister_card(card); |
240 | ||
241 | tegra_asoc_utils_fini(&machine->util_data); | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
246 | static const struct of_device_id tegra_rt5640_of_match[] = { | |
247 | { .compatible = "nvidia,tegra-audio-rt5640", }, | |
248 | {}, | |
249 | }; | |
250 | ||
251 | static struct platform_driver tegra_rt5640_driver = { | |
252 | .driver = { | |
253 | .name = DRV_NAME, | |
040a62cf SW |
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 | }; | |
260 | module_platform_driver(tegra_rt5640_driver); | |
261 | ||
262 | MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); | |
263 | MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver"); | |
264 | MODULE_LICENSE("GPL v2"); | |
265 | MODULE_ALIAS("platform:" DRV_NAME); | |
266 | MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match); |